128 results on '"Chi-Shiun Chiang"'
Search Results
2. CXCR4-targeted nitric oxide nanoparticles deliver PD-L1 siRNA for immunotherapy against glioblastoma
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Hsin-Tzu, Hsieh, Hsi-Chien, Huang, Chieh-Wei, Chung, Cheng-Chin, Chiang, Tiffaney, Hsia, Hsin-Fang, Wu, Rui-Lin, Huang, Chi-Shiun, Chiang, Jane, Wang, Tsai-Te, Lu, and Yunching, Chen
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Receptors, CXCR4 ,Brain Neoplasms ,Cell Line, Tumor ,Tumor Microenvironment ,Humans ,Nanoparticles ,Pharmaceutical Science ,Immunotherapy ,RNA, Small Interfering ,Glioblastoma ,Nitric Oxide ,B7-H1 Antigen - Abstract
While immunotherapy has emerged as a promising strategy to treat glioblastoma multiforme (GBM), the limited availability of immunotherapeutic agents in tumors due to the presence of the blood-brain barrier (BBB) and immunosuppressive tumor microenvironment dampens efficacy. Nitric oxide (NO) plays a role in modulating both the BBB and tumor vessels and could thus be delivered to disrupt the BBB and improve the delivery of immunotherapeutics into GBM tumors. Herein, we report an immunotherapeutic approach that utilizes CXCR4-targeted lipid‑calcium-phosphate nanoparticles with NO donors (LCP-NO NPs). The delivery of NO resulted in enhanced BBB permeability and thus improved gene delivery across the BBB. CXCR4-targeted LCP-NO NPs delivered siRNA against the immune checkpoint ligand PD-L1 to GBM tumors, silenced PD-L1 expression, increased cytotoxic T cell infiltration and activation in GBM tumors, and suppressed GBM progression. Thus, the codelivery of NO and PD-L1 siRNA by these CXCR4-targeted NPs may serve as a potential immunotherapy for GBM.
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- 2022
3. Data from Radiotherapy Decreases Vascular Density and Causes Hypoxia with Macrophage Aggregation in TRAMP-C1 Prostate Tumors
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Ji-Hong Hong, William H. McBride, Chung-Chi Lee, Shih-Ming Jung, Chien-Sheng Tsai, Chun-Chieh Wang, Chi-Shiun Chiang, and Fang-Hsin Chen
- Abstract
Purpose: To investigate how single or fractionated doses of radiation change the microenvironment in transgenic adenocarcinoma of the mouse prostate (TRAMP)-C1 tumors with respect to vascularity, hypoxia, and macrophage infiltrates.Experimental Design: Murine prostate TRAMP-C1 tumors were grown in C57BL/6J mice to 4 mm tumor diameter and were irradiated with either 25 Gy in a single dose or 60 Gy in 15 fractions. Changes in vascularity, hypoxia, and macrophage infiltrates were assessed by immunohistochemistry and molecular assays.Results: Tumor growth was delayed for 1 week after both radiation schedules. Tumor microvascular density (MVD) progressively decreased over a 3-week period to nadirs of 25% and 40% of unirradiated tumors for single or fractionated treatment, respectively. In accord with the decrease in MVDs, mRNA levels of endothelial markers, such as CD31, endoglin, and TIE, decreased over the same time period after irradiation. Central dilated vessels developed surrounded by avascularized hypoxic regions that became infiltrated with aggregates of CD68+ tumor-associated macrophages, reaching a maximum at 3 weeks after irradiation. Necrotic regions decreased and were more dispersed.Conclusion: Irradiation of TRAMP-C1 tumors with either single or fractionated doses decreases MVD, leading to the development of disperse chronic hypoxic regions, which are infiltrated with CD68+ tumor-associated macrophages. Approaches to interfere in the development of these effects are promising strategies to enhance the efficacy of cancer radiotherapy.
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- 2023
4. Supplementary Figures S1-S3 from Radiotherapy Decreases Vascular Density and Causes Hypoxia with Macrophage Aggregation in TRAMP-C1 Prostate Tumors
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Ji-Hong Hong, William H. McBride, Chung-Chi Lee, Shih-Ming Jung, Chien-Sheng Tsai, Chun-Chieh Wang, Chi-Shiun Chiang, and Fang-Hsin Chen
- Abstract
Supplementary Figures S1-S3 from Radiotherapy Decreases Vascular Density and Causes Hypoxia with Macrophage Aggregation in TRAMP-C1 Prostate Tumors
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- 2023
5. Microglia-mediated drug resistance by hijacking drug substances from glioma cells
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Sheng-Yan Wu, Wen-Jui Yu, Ting-Yi Chien, Yu-An Ren, Chi-Shuo Chen, and Chi-Shiun Chiang
- Abstract
Background: It is well known that tumor-associated macrophages (TAMs) play essential roles in brain tumor resistance to chemotherapy. However, the detailed mechanisms of how TAMs are involved in brain tumor resistance are still unclear and lack a suitable analysis model. Methods: A BV2 microglial cells with ALTS1C1 astrocytoma cells in vitro co-culture system was used to mimic the microglia dominating tumor stroma in the tumor invasion microenvironment and explore the interaction between microglia and brain tumor cells. Results: Our result suggested that microglia could form colonies with glioma cells under high-density culturing conditions and protect glioma cells from apoptosis induced by chemotherapeutic drugs. Moreover, this study demonstrates that microglia could hijack drug substances from the glioma cells and reduce the drug intensity of ALTS1C1 via direct contact. Inhibition of gap junction protein prevented microglial-glioma colony formation and microglia-mediated chemoresistance. Conclusions: This study provides novel insights into how glioma cells acquire chemoresistance via microglia-mediated drug substance transferring, providing a new option for treating chemo-resistant brain tumors.
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- 2023
6. Conquering multidrug resistant lung cancer by upconversion <scp>nanoparticles‐mediated</scp> photodynamic therapy and gene silencing
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Poliraju Kalluru, Munusamy Shanmugam, Raviraj Vankayala, Chi‐Shiun Chiang, and Kuo Chu Hwang
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General Chemistry - Published
- 2022
7. Large tissue archiving solution for multiplexed labeling and super-resolution imaging
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Ya-Hui Lin, Li-Wen Wang, Yen-Hui Chen, Yi-Chieh Chan, Shang-Hsiu Hu, Sheng-Yan Wu, Chi-Shiun Chiang, Guan-Jie Huang, Shang-Da Yang, Shi-Wei Chu, Kuo-Chuan Wang, Chin-Hsien Lin, Pei-Hsin Huang, Hwai-Jong Cheng, Bi-Chang Chen, and Li-An Chu
- Abstract
Tissue clearing and expansion microscopy have significantly advanced neuroscience by enabling the visualization of spatial information about biological components, from tissue-level architecture to nanoscale structures. Currently, their application is limited to tissues without prolonged fixation, which excludes long-term preserved specimens, such as human brains. To address this issue, we present a new multiplex labeling and expansion-applicable method for centimeter-sized archived tissue (MOCAT). We successfully applied MOCAT to formalin-fixed paraffin-embedded (FFPE) mouse, pig, and human brain blocks up to 15 years old. The reliability of MOCAT was demonstrated by the indistinguishable spatial and quantitative information of biomarkers obtained from FFPE intact mouse brains compared to that from freshly prepared SDS-delipidated intact mouse brains. Additionally, MOCAT-processed FFPE samples exhibited superior long-term antigenicity preservation and suitability for advanced expansion microscopy in human brain compared to those kept in 10% formalin. In summary, MOCAT combined with FFPE fulfills the demand for long-term tissue preservation and organ-level multiplex imaging in super-resolution.
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- 2022
8. A versatile method to archive and delipidate brain tissues for ensuing multiplexed immunolabeling and organ-level imaging
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Ya-Hui Lin, Li-Wen Wang, Yen-Hui Chen, Yi-Chieh Chan, Shang-Hsiu Hu, Sheng-Yan Wu, Chi-Shiun Chiang, Guan-Jie Huang, Shang-Da Yang, Shi-Wei Chu, Kuo-Chuan Wang, Chin-Hsien Lin, Pei-Hsin Huang, Hwai-Jong Cheng, Bi-Chang Chen, and Li-An Chu
- Abstract
Current tissue clearing and labeling approaches require freshly prepared samples to avoid problems related to over-fixation, such as loss of antigenicity or difficulty of tissue clearing. Thus, the predicament of specimens with long-term preservation limits the application of state-of-art technology to archived human brain tissues. Here, we present the development and validation of multiplex labeling of centimeter-sized archived tissue (MOCAT)—a formalin-fixed paraffin-embedding (FFPE)–based sample preservation and delipidation technique for centimeter-level tissue clearing and immunolabeling. We demonstrate that MOCAT sufficiently delipidates whole mouse brain and human brain blocks and is superior to 10% formalin for long-term antigenicity preservation; moreover, the spatial information of biomarkers offered by MOCAT-processed intact mouse brains is identical to that offered by freshly prepared SDS-delipidated intact mouse brains. MOCAT not only satisfies the need for long-term tissue storage before performing volumetric multiplex imaging for research purposes but also has the potential to be used in human clinical examination.
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- 2022
9. Multifunctional CuO/Cu2O Truncated Nanocubes as Trimodal Image-Guided Near-Infrared-III Photothermal Agents to Combat Multi-Drug-Resistant Lung Carcinoma
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Naresh Kuthala, Chi-Shiun Chiang, Xiangyi Kong, Raviraj Vankayala, Munusamy Shanmugam, and Kuo Chu Hwang
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medicine.diagnostic_test ,Theranostic Nanomedicine ,Chemistry ,General Engineering ,General Physics and Astronomy ,Cancer ,Magnetic resonance imaging ,Photothermal therapy ,medicine.disease ,Imaging agent ,Multiple drug resistance ,medicine ,Cancer research ,Carcinoma ,General Materials Science ,Lung cancer - Abstract
Despite the development of various therapeutic modalities to tackle cancer, multidrug resistance (MDR) and incomplete destruction of deep tissue-buried tumors remain as long-standing challenges responsible for tumor recurrence and low survival rates. In addition to the MDR and deep tissue photoactivation problems, most primary tumors metastasize to the lungs and lymph nodes to form secondary tumors. Therefore, it leaves a great challenge to develop theranostic approaches to combat both MDR and deep tissue photoactivation problems. Herein, we develop a versatile plasmonic CuO/Cu2O truncated nanocube-based theranostic nanomedicine to act as a triple modal near-infrared fluorescence (NIRF) imaging agent in the biological window II (1000-1500 nm)/photoacoustic imaging (PAI)/T1-weighted magnetic resonance (MR) imaging agents, sensitize the formation of singlet oxygen (1O2) to exert nanomaterial-mediated photodynamic therapeutic (NIR-II NmPDT), and absorb long NIR light (i.e., 1550 nm) in the biological window III (1500-1700 nm) to exert nanomaterial-mediated photothermal therapeutic (NIR-III NmPTT) effects for the effective destruction of multi-drug-resistant lung tumors. We found that H69AR lung cancer cells do not create drug resistance toward plasmonic CuO/Cu2O TNCs-based nanomedicines.
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- 2021
10. 1550 nm light activatable photothermal therapy on multifunctional CuBi
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Suresh, Thangudu, Chi-Shiun, Chiang, and Kuo, Chu Hwang
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Photochemotherapy ,Bacteria ,Photothermal Therapy ,Drug Resistance ,Oxides ,Phototherapy ,Reactive Oxygen Species - Abstract
Nanomaterial mediated phototherapies are believed to be promising candidates to overcome the bacterial drug resistance crisis. However, due to the lack of nanomaterials able to absorb long NIR light, especially in the NIR-III (1500-1850 nm) and -IV (2100-2300 nm) regimes, it was never investigated the utilization of NIR-III and NIR-IV light for in vivo treatments of cancer or bacterial infections. To this end, plasmonic metal-doped transition metal oxides (TMO) are attracting a great attention due to their tunable surface plasmon resonance absorption to the NIR region. Unique features with extendable NIR light absorption of plasmonic metal-doped transition metal oxides make their applications very attractive in several fields, but their utilization for bacterial infection treatments was not yet reported. Moreover, up-to-date bacterial eradication was limited to phototherapies in the NIR-I (700-950 nm) and NIR-II (1000-1350 nm) biological windows (BWs) and has not yet been studied in the NIR-III (1500-1870 nm) BW. To overcome these literature limitations, we engineered NIR-III (1550 nm) light activatable multifunctional plasmonic CuBi
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- 2022
11. One step synthesis of
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Naresh, Kuthala, Munusamy, Shanmugam, Chao-Ling, Yao, Chi-Shiun, Chiang, and Kuo Chu, Hwang
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Boron Compounds ,Neutrons ,Mice ,Head and Neck Neoplasms ,Humans ,Animals ,Nanoparticles ,Boron Neutron Capture Therapy ,Neoplasm Recurrence, Local ,Boron - Abstract
Recurrent head-and-neck (HN) cancer is one of the most malignant cancers in the world. Various treatment modalities, such as radiation therapy, chemotherapy, and surgery were adopted to treat HN cancer, but recurrence of HN tumor always occurs again, leading to poor prognosis and low 5-year survival rate. Recently, boron neutron capture therapy (BNCT) emerges an alternative modality for curing recurrent tumors. Presently, boron phenylalanine-fructose (BPA-F) and sodium borocaptate (BSH) are the two best BNCT molecular drugs, which, however, have poor therapeutic efficacies and are lack of tumor-targeting ability. In this study
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- 2022
12. Salt-mediated, plasmonic field-field/field-lattice coupling-enhanced NIR-II photodynamic therapy using core-gap-shell gold nanopeanuts
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Naresh Kuthala, Munusamy Shanmugam, Xiangyi Kong, Chi-Shiun Chiang, and Kuo Chu Hwang
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Mice ,Photochemotherapy ,Animals ,Metal Nanoparticles ,General Materials Science ,Gold ,Sodium Chloride ,Nanostructures - Abstract
Plasmonic field-field coupling-induced enhancement of the optical properties of dye molecules in the nanogaps among metal nanoparticle clusters and thin films has attracted significant attention especially in disease-related theranostic applications. However, it is very challenging to synthesize plasmonic core-gap-shell nanostructures with a well-controlled nanogap, uniform shape, and distances to maximize the plasmonic field-field coupling between the core and the shell. Herein, we synthesized Au@gap@AuAg nanopeanut-shaped core-gap-shell nanostructures (Au NPN) and tuned their optical absorption from near-infrared region-I (NIR-I) to near-infrared region-II (NIR-II) by filling their nanogap with a high dielectric NaCl
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- 2022
13. Rabies Virus Glycoprotein-Mediated Transportation and T Cell Infiltration to Brain Tumor by Magnetoelectric Gold Yarnballs
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Wei Cheng, Yu-Lin Su, Hao-Hsiang Hsu, Ya-Hui Lin, Li-An Chu, Wei-Chen Huang, Yu-Jen Lu, Chi-Shiun Chiang, and Shang-Hsiu Hu
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Mice ,Brain Neoplasms ,Rabies virus ,T-Lymphocytes ,General Engineering ,General Physics and Astronomy ,Animals ,General Materials Science ,Gold ,Glycoproteins - Abstract
T lymphocyte infiltration with immunotherapy potentially suppresses most devastating brain tumors. However, local immune privilege and tumor heterogeneity usually limit the penetration of immune cells and therapeutic agents into brain tumors, leading to tumor recurrence after treatment. Here, a rabies virus glycoprotein (RVG)-camouflaged gold yarnball (RVG@GY) that can boost the targeting efficiency at a brain tumor
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- 2022
14. Photosensitized reactive chlorine species-mediated therapeutic destruction of drug-resistant bacteria using plasmonic core–shell Ag@AgCl nanocubes as an external nanomedicine
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Suresh Thangudu, Chi-Shiun Chiang, Kuo Chu Hwang, Raviraj Vankayala, and Sagar Sunil Kulkarni
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Methicillin-Resistant Staphylococcus aureus ,Plasmonic nanoparticles ,Silver ,Bacteria ,biology ,Chemistry ,Drug resistance ,biology.organism_classification ,Antimicrobial ,medicine.disease_cause ,Combinatorial chemistry ,Anti-Bacterial Agents ,Mice ,Nanomedicine ,Antibiotic resistance ,Pharmaceutical Preparations ,Staphylococcus aureus ,In vivo ,medicine ,Animals ,General Materials Science ,Chlorine - Abstract
Due to the rapid growth of drug-resistant bacterial infections, there is an urgent need to develop innovative antimicrobial strategies to conquer the bacterial antibiotic resistance problems. Although a few nanomaterial-based antimicrobial strategies have been developed, the sensitized formation of cytotoxic reactive chlorine species (RCS), including chlorine gas and chlorine free radicals, by photo-activatable plasmonic nanoparticles for evading drug-resistant bacterial infections has not yet been reported. To address this challenge, herein, we report the synthesis of an unprecedented plasmonic core-shell Ag@AgCl nanocrystal through an in situ oxidation route for the photo-induced generation of highly cytotoxic RCS. We present the detailed in vitro and in vivo investigations of visible light activated Ag@AgCl nanostructure-mediated evasion of drug-resistant bacteria. In particular, the in vivo results demonstrate the complete reepithelialization of the methicillin-resistant Staphylococcus aureus (MRSA) infected wounds on skin upon phototherapeutic treatment mediated Ag@AgCl NCs. To the best of our knowledge, this is the first unique example of using Ag@AgCl NCs as an external nanomedicine for photo-induced generation of RCS to mediate effective killing of both Gram-positive and Gram-negative drug resistance bacteria and healing of the subcutaneous abscesses in an in vivo mouse model.
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- 2020
15. One step synthesis of 10B-enriched 10BPO4 nanoparticles for effective boron neutron capture therapeutic treatment of recurrent head-and-neck tumor
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Naresh Kuthala, Munusamy Shanmugam, Chao-Ling Yao, Chi-Shiun Chiang, and Kuo Chu Hwang
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Biomaterials ,Mechanics of Materials ,Biophysics ,Ceramics and Composites ,Bioengineering - Published
- 2022
16. Polymer-Coated Nanoparticles for Therapeutic and Diagnostic Non
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Chen-Wei, Chiang, Yun-Chen, Chien, Wen-Jui, Yu, Chia-Yu, Ho, Chih-Yi, Wang, Tzu-Wei, Wang, Chi-Shiun, Chiang, and Pei-Yuin, Keng
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inorganic chemicals ,nanoparticle drug delivery ,BNCT ,cancer therapy ,BCNO ,Article - Abstract
Boron neutron capture therapy (BNCT) is a powerful and selective anti-cancer therapy utilizing 10B-enriched boron drugs. However, clinical advancement of BCNT is hampered by the insufficient loading of B-10 drugs throughout the solid tumor. Furthermore, the preparation of boron drugs for BNCT relies on the use of the costly B-10 enriched precursor. To overcome these challenges, polymer-coated boron carbon oxynitride (BCNO) nanoparticles, with ~30% of boron, were developed with enhanced biocompatibility, cell uptake, and tumoricidal effect via BNCT. Using the ALTS1C1 cancer cell line, the IC50 of the PEG@BCNO, bare, PEI@BCNO were determined to be 0.3 mg/mL, 0.1 mg/mL, and 0.05 mg/mL, respectively. As a proof-of-concept, the engineered non-10B enriched polymer-coated BCNO exhibited excellent anti-tumor effect via BNCT due to their high boron content per nanoparticle and due to the enhanced cellular internalization and retention compared to small molecular 10B-BPA drug. The astrocytoma ALTS1C1 cells treated with bare, polyethyleneimine-, and polyethylene glycol-coated BCNO exhibited an acute cell death of 24, 37, and 43%, respectively, upon 30 min of neutron irradiation compared to the negligible cell death in PBS-treated and non-irradiated cells. The radical approach proposed in this study addresses the expensive and complex issues of B-10 isotope enrichment process; thus, enabling the preparation of boron drugs at a significantly lower cost, which will facilitate the development of boron drugs for BNCT.
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- 2021
17. Multifunctional CuO/Cu
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Munusamy, Shanmugam, Naresh, Kuthala, Raviraj, Vankayala, Chi-Shiun, Chiang, Xiangyi, Kong, and Kuo Chu, Hwang
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Lung Neoplasms ,Carcinoma ,Humans ,Lung ,Copper ,Drug Resistance, Multiple - Abstract
Despite the development of various therapeutic modalities to tackle cancer, multidrug resistance (MDR) and incomplete destruction of deep tissue-buried tumors remain as long-standing challenges responsible for tumor recurrence and low survival rates. In addition to the MDR and deep tissue photoactivation problems, most primary tumors metastasize to the lungs and lymph nodes to form secondary tumors. Therefore, it leaves a great challenge to develop theranostic approaches to combat both MDR and deep tissue photoactivation problems. Herein, we develop a versatile plasmonic CuO/Cu
- Published
- 2021
18. A Noninvasive Gut‐to‐Brain Oral Drug Delivery System for Treating Brain Tumors
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Yang‐Bao Miao, Kuan‐Hung Chen, Chiung‐Tong Chen, Fwu‐Long Mi, Yu‐Jung Lin, Yen Chang, Chi‐Shiun Chiang, Jui‐To Wang, Kun‐Ju Lin, and Hsing‐Wen Sung
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Mechanics of Materials ,Mechanical Engineering ,General Materials Science - Published
- 2022
19. Effects of surface functionality of carbon nanomaterials on short-term cytotoxicity and embryonic development in zebrafish
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Chi-Shiun Chiang, Kuo Chu Hwang, Hsin-Hui Tsai, Raviraj Vankayala, and Poliraju Kalluru
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Materials science ,biology ,Intracellular pH ,Biomedical Engineering ,Nanotechnology ,General Chemistry ,General Medicine ,Photothermal therapy ,biology.organism_classification ,Nanomaterials ,HeLa ,In vivo ,Cancer cell ,Biophysics ,General Materials Science ,Drug carrier ,Cytotoxicity - Abstract
Nanomaterials have been widely used in the biomedical field as gene/drug carriers, magnetic resonance imaging (MRI) contrast reagents, photothermal therapy reagents, fluorescent cellular markers, etc. The origins and working mechanisms of cytotoxicities of nanomaterials, however, are not well understood. It is often stated in the literature that a nanomaterial is non-toxic and biocompatible. In this study, we show that the short term cytotoxicity of a nanomaterial is determined by the surface functionality, rather than the core nanomaterial. A so-called “non-toxic and biocompatible” nanomaterial, such as core/shell iron-filled carbon nanoparticles (Fe@CNPs) and nanodiamonds (NDs), can become cytotoxic when a cationic surface functionality, such as imidazolium (IM) and tertiary methyl ammonium ethyl methacrylate (TMAEA) moieties, was grafted onto the surface. To investigate the contributions of surface functionalities and the core nanomaterials on cytotoxicity, two “non-toxic and biocompatible” Fe@CNPs and NDs were surface-modified with different surface functionalities, including anionic COOH, zwitterionic PVP, neutral OH, cationic IM and TMAEA, and investigated for their cytotoxicities in both in vitro cancer cells (HeLa and U-87MG cells) and in vivo embryo development of zebrafish. Among these surface functionalities, cationic IM and TMAEA functionalities of both Fe@CNPs and NDs cause acute cytotoxicity to a similar extent in the in vitro cancer cell experiments, as well as affect severely the embryonic development and survival rates of zebrafish. Other surface functionalities do not show particularly strong cytotoxicities. To obtain information regarding the origins of cytotoxicities, the effects of surface functionalities were also examined on the lactate dehydrogenase (LDH) levels, cellular ROS generation, apoptosis, and changes in lysosomal membrane integrity, mitochondrial membrane potential, the intracellular pH (pHi), and cell cycles. Our results clearly point out that surface functionality, rather than the core nanomaterials, plays a critical role in dictating the short-term cytotoxicities.
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- 2020
20. Morphology dependent photosensitization and formation of singlet oxygen (
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Raviraj, Vankayala, Chien-Lin, Kuo, Arunachalam, Sagadevan, Po-Hung, Chen, Chi-Shiun, Chiang, and Kuo Chu, Hwang
- Abstract
Singlet oxygen is a very important reactive oxygen species (ROS) involved in peroxidation of olefins and polymers, as well as in clinical photodynamic therapy treatments of tumors. Previously, it was reported that singlet oxygen can be formed via sensitization by spherical metal nanoparticles upon photo-excitation of the surface plasmon resonance (SPR) bands. In this paper, we report that sensitization and formation of singlet O
- Published
- 2020
21. Unexpected dose response of HaCaT to UVB irradiation
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Wei-Ju Chung, Chi-Shuo Chen, Ching-Lung Huang, Chiu-Ting Chang, Ian C. Hsu, Chun-Yu Chuang, Chi-Shiun Chiang, Rong-Shing Chang, Yujia Cui, and Wun-Yi Shu
- Subjects
Keratinocytes ,0301 basic medicine ,MAPK/ERK pathway ,Transcription, Genetic ,Cell Survival ,Ultraviolet Rays ,p38 mitogen-activated protein kinases ,Apoptosis ,Nitric Oxide ,Cell Line ,Electron Transport ,Phosphatidylinositol 3-Kinases ,030207 dermatology & venereal diseases ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Superoxides ,Humans ,Benzopyrans ,LY294002 ,Protein kinase B ,Flavonoids ,integumentary system ,Gene Expression Profiling ,Cell Cycle ,Acetophenones ,Dose-Response Relationship, Radiation ,Cell Biology ,General Medicine ,Up-Regulation ,HaCaT ,030104 developmental biology ,chemistry ,Cancer research ,Poly(ADP-ribose) Polymerases ,Signal transduction ,Reactive Oxygen Species ,Proto-Oncogene Proteins c-akt ,Rottlerin ,Developmental Biology - Abstract
Application of high-dosage UVB irradiation in phototherapeutic dermatological treatments present health concerns attributed to UV-exposure. In assessing UV-induced photobiological damage, we investigated dose-dependent effects of UVB irradiation on human keratinocyte cells (HaCaT). Our study implemented survival and apoptosis assays and revealed an unexpected dose response wherein higher UVB-dosage induced higher viability. Established inhibitors, such as AKT- (LY294002), PKC- (Gö6976, and Rottlerin), ERK- (PD98059), P38 MAPK- (SB203580), and JNK- (SP600125), were assessed to investigate UV-induced apoptotic pathways. Despite unobvious contributions of known signaling pathways in dose-response mediation, microarray analysis identified transcriptional expression of UVB-response genes related to the respiratory-chain. Observed correlation of ROS-production with UVB irradiation potentiated ROS as the underlying mechanism for observed dose responses. Inability of established pathways to explain such responses suggests the complex nature underlying UVB-phototherapy response.
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- 2018
22. Radiotherapy-Controllable Chemotherapy from Reactive Oxygen Species-Responsive Polymeric Nanoparticles for Effective Local Dual Modality Treatment of Malignant Tumors
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Hsin-Cheng Chiu, Chun Liang Lo, Yuan Chung Tsai, Chun Kai Hung, Te-I Liu, Chi-Shiun Chiang, Wen-Hsuan Chiang, and Ying-Chieh Yang
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Male ,Polymers and Plastics ,Adipates ,medicine.medical_treatment ,Antineoplastic Agents ,Bioengineering ,02 engineering and technology ,Irinotecan ,Polyethylene Glycols ,Biomaterials ,Mice ,03 medical and health sciences ,0302 clinical medicine ,In vivo ,Cell Line, Tumor ,Safrole ,Materials Chemistry ,medicine ,Animals ,Cytotoxicity ,chemistry.chemical_classification ,Mice, Inbred BALB C ,Chemotherapy ,Reactive oxygen species ,Chemistry ,X-Rays ,Chemoradiotherapy ,Neoplasms, Experimental ,021001 nanoscience & nanotechnology ,Radiation therapy ,Drug Liberation ,030220 oncology & carcinogenesis ,Cancer cell ,Drug delivery ,Cancer research ,Nanoparticles ,Reactive Oxygen Species ,0210 nano-technology ,Adjuvant - Abstract
Radiotherapy is one of the general approaches to deal with malignant solid tumors in clinical treatment. To improve therapeutic efficacy, chemotherapy is frequently adopted as the adjuvant treatment in combination with radiotherapy. In this work, a reactive oxygen species (ROS)-responsive nanoparticle (NP) drug delivery system was developed to synergistically enhance the antitumor efficacy of radiotherapy by local ROS-activated chemotherapy, taking advantages of the enhanced concentration of reactive oxygen species (ROS) in tumor during X-ray irradiation and/or reoxygenation after X-ray irradiation. The ROS-responsive polymers, poly(thiodiethylene adipate) (PSDEA) and PEG-PSDEA-PEG, were synthesized and employed as the major components assembling in aqueous phase into polymer NPs in which an anticancer camptothecin analogue, SN38, was encapsulated. The drug-loaded NPs underwent structural change including swelling and partial dissociation in response to the ROS activation by virtue of the oxidation of the nonpolar sulfide residues in NPs into the polar sulfoxide units, thus leading to significant drug unloading. The in vitro performance of the chemotherapy from the X-ray irradiation preactivated NPs against BNL 1MEA.7R.1 murine carcinoma cells showed comparable cytotoxicity to free drug and appreciably enhanced effect on killing cancer cells while the X-ray irradiation being incorporated into the treatment. The in vivo tumor growth was fully inhibited with the mice receiving the local dual modality treatment of X-ray irradiation together with SN38-loaded NPs administered by intratumoral injection. The comparable efficacy of the local combinational treatment of X-ray irradiation with SN38-loaded NPs to free SN38/irradiation dual treatment corroborated the effectiveness of ROS-mediated drug release from the irradiated NPs at tumor site. The IHC examination of tumor tissues confirmed the significant reduction of VEGFA and CD31 expression with the tumor receiving the local dual treatment developed in this work, thus accounting for the absence of tumor regrowth compared to other single modality treatment.
- Published
- 2018
23. Role of Myeloid-Derived Suppressor Cells in High-Dose-Irradiated TRAMP-C1 Tumors: A Therapeutic Target and an Index for Assessing Tumor Microenvironment
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Ching-Fang Yu, Fang-Hsin Chen, Ji-Hong Hong, Chi-Shiun Chiang, Sheng-Yung Fu, and Chun-Chieh Wang
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Male ,Cancer Research ,medicine.medical_treatment ,Spleen ,030218 nuclear medicine & medical imaging ,Flow cytometry ,03 medical and health sciences ,Mice ,0302 clinical medicine ,Cell Movement ,medicine ,Tumor Microenvironment ,Animals ,Radiology, Nuclear Medicine and imaging ,Receptors, Tumor Necrosis Factor, Member 25 ,Immunoassay ,Tumor microenvironment ,Radiation ,CD11b Antigen ,medicine.diagnostic_test ,business.industry ,Myeloid-Derived Suppressor Cells ,Prostatic Neoplasms ,Radiotherapy Dosage ,Flow Cytometry ,Radiation therapy ,Mice, Inbred C57BL ,Disease Models, Animal ,Cytokine ,medicine.anatomical_structure ,Oncology ,030220 oncology & carcinogenesis ,Myeloid-derived Suppressor Cell ,Cancer research ,Immunohistochemistry ,Cytokines ,Receptors, Chemokine ,Chemokines ,business ,Tramp - Abstract
Purpose To investigate the temporal and spatial infiltration of TRAMP-C1 tumors by myeloid-derived suppressor cells (MDSCs) after high-dose radiation therapy (RT), and to explore their effect on tumor growth. Methods and Materials TRAMP-C1 intramuscularly tumors were irradiated with a single dose of 8 Gy or 25 Gy. The dynamics of infiltrated MDSCs and their intratumoral spatial distribution were assessed by immunohistochemistry and flow cytometry. Cytokine levels in the blood and tumor were analyzed by multiplex immunoassay. Mice were injected with anti-Gr-1 antibody to determine whether MDSCs affect tumor growth after RT. Results CD11b+Gr-1+ MDSCs infiltrated TRAMP-C1 tumors irradiated with 25 Gy, but not 8 Gy, within 4 hours and recruitment persisted for at least 2 weeks. Both CD11b+Ly6G+Ly6C+ polymorphonuclear-MDSCs (PMN-MDSCs) and CD11b+Ly6G-Ly6Chi monocytic-MDSCs (M-MDSCs) were involved. Tumor RT also increased the representation of both MDSC subpopulations in the spleen and peripheral blood. Levels of multiple cytokines were increased in the tumors at 2 weeks, including GM-CSF, G-CSF, CCL-3, CCL-5, CXCL-5, IL-6, IL-17α, and VEGF-a; while G-CSF, IL-6, and TNF-α levels increased in the blood. PMN-MDSCs aggregated in the central necrotic region of the irradiated tumors over time, where they were associated with avascular hypoxia (CD31-PIMO+). MDSCs expressed the proangiogenic factor, matrix metalloproteinase-9, and, within the necrotic area, high levels of arginase-1 and indoleamine 2,3-dioxygenase. Depletion of PMN-MDSCs by Gr-1 antibody increased the efficacy of high-dose RT. Conclusions PMN-MDSCs infiltrate TRAMP-C1 tumors after high-dose RT. Their spatial distribution suggests they are involved in the evolution of an intratumoral state of necrosis associated with avascular hypoxia, and their phenotype is consistent with them being immunosuppressive. They appear to promote tumor growth after RT, making them a prime therapeutic target for therapeutic intervention. Assessment of MDSCs and cytokine levels in blood could be an index of the need for such an intervention.
- Published
- 2019
24. Rabies virus glycoprotein-amplified hierarchical targeted hybrids capable of magneto-electric penetration delivery to orthotopic brain tumor
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Chia-Hsien Hsu, Shang-Hsiu Hu, Li-Wen Kuo, Yu-Jen Lu, Chi-Shiun Chiang, Shing-Jyh Chang, and Yu-Lin Su
- Subjects
Combination therapy ,Brain tumor ,Pharmaceutical Science ,02 engineering and technology ,Palbociclib ,medicine.disease_cause ,03 medical and health sciences ,Drug Delivery Systems ,Cell Line, Tumor ,medicine ,Humans ,Doxorubicin ,030304 developmental biology ,Glycoproteins ,0303 health sciences ,Chemistry ,Brain Neoplasms ,Rabies virus ,Penetration (firestop) ,021001 nanoscience & nanotechnology ,medicine.disease ,Graphene quantum dot ,Cancer research ,Nanomedicine ,Graphite ,0210 nano-technology ,medicine.drug - Abstract
Compact nanohybrids can potentially unite various therapeutic features and reduce side effects for precise cancer therapy. However, the poor accumulation and limited tumor penetration of drugs at the tumor impede the manifestation of nanomedicine. We developed a rabies virus glycoprotein (RVG)-amplified hierarchical targeted hybrid that acts as a stealthy and magnetolytic carrier that transports dual tumor-penetrating agents incorporating two drugs (boron-doped graphene quantum dots (B-GQDs)/doxorubicin and pH-responsive dendrimers (pH-Den)/palbociclib). The developed RVG-decorated hybrids (RVG-hybrids) enhance the accumulation of drugs at tumor by partially bypassing the BBB via spinal cord transportation and pH-induced aggregation of hierarchical targeting. The penetrated delivery of dual pH-Den and B-GQD drugs to deep tumors is actuated by magnetoelectric effect, which are able to generate electrons to achieve electrostatic repulsion and disassemble the hybrids into components of a few nanometers in size. The synergy of magnetoelectric drug penetration and chemotherapy was achieved by delivery of the B-GQDs and pH-Den to orthotopic tumors, which prolonged the host survival time. This RVG-amplified dual hierarchical delivery integrated with controlled and penetrated release from this hybrid improve the distribution of the therapeutic agents at the brain tumor for synergistic therapy, exhibiting potential for clinic use.
- Published
- 2019
25. Bioprosthesis of Core–Shell Gold Nanorod/Serum Albumin Nanoimitation: A Half-Native and Half-Artificial Nanohybrid for Cancer Theranostics
- Author
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Hsien-Ting Chiu, Chung-Hao Chen, Cheng-Kuan Su, Chi-Shiun Chiang, Meng-Lin Li, Yu-Fen Huang, and Yuh-Chang Sun
- Subjects
Gold nanorod ,biology ,Chemistry ,Protein immobilization ,General Chemical Engineering ,Albumin ,Serum albumin ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Cell morphology ,01 natural sciences ,0104 chemical sciences ,Core shell ,Adsorption ,Materials Chemistry ,biology.protein ,Biophysics ,Protein activity ,0210 nano-technology - Abstract
High concentrations of aldehyde-based cross-linkers have been commonly used for protein immobilization to facilitate microscale and nanoscale observations. This fixation maintains cell morphology and partial protein activity. In this study, a facile one-step strategy based on a similar concept was first developed for the bioprosthesis of a uniform core–shell gold nanorod/serum albumin (NR@SA) nanoplatform. The resultant albumin shell preserved half of its native form, leading to decreased free SA adsorption, and even these adsorbed proteins were close to their native form. This strategy efficiently prevents subsequent adsorption cascades of other proteins and has a remarkable influence on cellular uptake (of macrophages and tumor cells). Furthermore, the other, artificial part endowed NR@SAs with higher drug loading capacity and enhanced photoacoustic signal intensity for cancer theranostics compared with those of its pristine counterpart. These findings suggested that preserved fidelity and artificial ch...
- Published
- 2018
26. Polymer-Coated Nanoparticles for Therapeutic and Diagnostic Non-10B Enriched Polymer-Coated Boron Carbon Oxynitride (BCNO) Nanoparticles as Potent BNCT Drug
- Author
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Chia-Yu Ho, Wen-Jui Yu, Tzu-Wei Wang, Chen-Wei Chiang, Chih-Yi Wang, Pei-Yuin Keng, Chi-Shiun Chiang, and Yun-Chen Chien
- Subjects
inorganic chemicals ,chemistry.chemical_classification ,Drug ,nanoparticle drug delivery ,Biocompatibility ,Chemistry ,General Chemical Engineering ,media_common.quotation_subject ,Radiochemistry ,Nanoparticle ,chemistry.chemical_element ,Polymer ,BNCT ,cancer therapy ,General Materials Science ,Lower cost ,BCNO ,Solid tumor ,Boron ,QD1-999 ,Carbon ,media_common - Abstract
Boron neutron capture therapy (BNCT) is a powerful and selective anti-cancer therapy utilizing 10B-enriched boron drugs. However, clinical advancement of BCNT is hampered by the insufficient loading of B-10 drugs throughout the solid tumor. Furthermore, the preparation of boron drugs for BNCT relies on the use of the costly B-10 enriched precursor. To overcome these challenges, polymer-coated boron carbon oxynitride (BCNO) nanoparticles, with ~30% of boron, were developed with enhanced biocompatibility, cell uptake, and tumoricidal effect via BNCT. Using the ALTS1C1 cancer cell line, the IC50 of the PEG@BCNO, bare, PEI@BCNO were determined to be 0.3 mg/mL, 0.1 mg/mL, and 0.05 mg/mL, respectively. As a proof-of-concept, the engineered non-10B enriched polymer-coated BCNO exhibited excellent anti-tumor effect via BNCT due to their high boron content per nanoparticle and due to the enhanced cellular internalization and retention compared to small molecular 10B-BPA drug. The astrocytoma ALTS1C1 cells treated with bare, polyethyleneimine-, and polyethylene glycol-coated BCNO exhibited an acute cell death of 24, 37, and 43%, respectively, upon 30 min of neutron irradiation compared to the negligible cell death in PBS-treated and non-irradiated cells. The radical approach proposed in this study addresses the expensive and complex issues of B-10 isotope enrichment process, thus, enabling the preparation of boron drugs at a significantly lower cost, which will facilitate the development of boron drugs for BNCT.
- Published
- 2021
27. A Noninvasive Gut‐to‐Brain Oral Drug Delivery System for Treating Brain Tumors
- Author
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Kun-Ju Lin, Yu-Jung Lin, Chen Kuan-Hung, Yen Chang, Fwu Long Mi, Jui-To Wang, Chi-Shiun Chiang, Hsing-Wen Sung, Chiung-Tong Chen, and Yang-Bao Miao
- Subjects
Drug ,Magnetic Resonance Spectroscopy ,beta-Glucans ,Materials science ,media_common.quotation_subject ,Administration, Oral ,Antineoplastic Agents ,Pharmacology ,Blood–brain barrier ,Lymphatic System ,Mice ,chemistry.chemical_compound ,Drug Delivery Systems ,Oral administration ,Glioma ,Temozolomide ,medicine ,Animals ,Prodrugs ,General Materials Science ,Disulfides ,media_common ,Microfold cell ,Brain Neoplasms ,Macrophages ,Mechanical Engineering ,Glutathione ,Prodrug ,medicine.disease ,Endocytosis ,Intestines ,medicine.anatomical_structure ,Lymphatic system ,chemistry ,Blood-Brain Barrier ,Mechanics of Materials ,Neoplasm Transplantation - Abstract
Most orally administered drugs fail to reach the intracerebral regions because of the intestinal epithelial barrier (IEB) and the blood-brain barrier (BBB), which are located between the gut and the brain. Herein, an oral prodrug delivery system that can overcome both the IEB and the BBB noninvasively is developed for treating gliomas. The prodrug is prepared by conjugating an anticancer drug on β-glucans using a disulfide-containing linker. Following oral administration in glioma-bearing mice, the as-prepared prodrug can specifically target intestinal M cells, transpass the IEB, and be phagocytosed/hitchhiked by local macrophages (Mϕ). The Mϕ-hitchhiked prodrug is transported to the circulatory system via the lymphatic system, crossing the BBB. The tumor-overexpressed glutathione then cleaves the disulfide bond within the prodrug, releasing the active drug, improving its therapeutic efficacy. These findings reveal that the developed prodrug may serve as a gut-to-brain oral drug delivery platform for the well-targeted treatment of gliomas.
- Published
- 2021
28. Angiogenesis-targeting microbubbles combined with ultrasound-mediated gene therapy in brain tumors
- Author
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Ching Hsiang Fan, En-Ling Chang, Yuan-Chih Chang, Yu-Chun Lin, En Chi Liao, Chiung Yin Huang, Chi-Shiun Chiang, Hao-Li Liu, Po Hong Hsu, Chih-Kuang Yeh, Hong-Lin Chan, Chien Yu Ting, and Kuo Chen Wei
- Subjects
0301 basic medicine ,Genetic enhancement ,Brain tumor ,Pharmaceutical Science ,Brain damage ,Gene delivery ,Biology ,Rats, Sprague-Dawley ,03 medical and health sciences ,0302 clinical medicine ,Luciferases, Firefly ,Glioma ,Gene expression ,medicine ,Animals ,Microbubbles ,Neovascularization, Pathologic ,Brain Neoplasms ,Gene targeting ,DNA ,Genetic Therapy ,medicine.disease ,Vascular Endothelial Growth Factor Receptor-2 ,Molecular biology ,030104 developmental biology ,Ultrasonic Waves ,030220 oncology & carcinogenesis ,Cancer research ,medicine.symptom - Abstract
The major challenges in gene therapy for brain cancer are poor transgene expression due to the blood-brain barrier (BBB) and neurologic damage caused by conventional intracerebral injection. Non-viral gene delivery using ultrasound-targeted microbubbles (MBs) oscillation via the systematic transvascular route is attractive, but there is currently no high-yielding and targeted gene expression method. In this study, we developed a non-viral and angiogenesis-targeting gene delivery approach for efficient brain tumor gene therapy without brain damage. We developed a VEGFR2-targeted and cationic microbubbles (VCMBs) gene vector for use with transcranial focused ultrasound (FUS) exposure to allow transient gene delivery. The system was tested in a brain tumor model using the firefly luciferase gene and herpes simplex virus type 1 thymidine kinase/ganciclovir (pHSV-TK/GCV) with VCMBs under FUS exposure for transgene expression and anti-tumor effect. In vitro data showed that VCMBs have a high DNA-loading efficiency and high affinity for cancer cells. In vivo data confirmed that this technique enhanced gene delivery into tumor tissues without affecting normal brain tissues. The VCMBs group resulted in higher luciferase expression (3.8 fold) relative to the CMBs group (1.9 fold), and the direct injection group. The tumor volume on day 25 was significantly smaller in rats treated with the pHSV-TK/GCV system using VCMBs under FUS (9.7±5.2mm3) than in the direct injection group (40.1±4.3mm3). We demonstrated the successful use of DNA-loaded VCMBs and FUS for non-viral, non-invasive and targeted gene delivery to brain tumors.
- Published
- 2017
29. Sigma-2 receptor/TMEM97 agonist PB221 as an alternative drug for brain tumor
- Author
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Hsueh-Yin Li, Carmen Abate, Chia-Chi Liu, Hsia-Han Wang, Shu-Chi Wang, Chi-Shiun Chiang, Chiu-Min Lin, and Ching-Fang Yu
- Subjects
Male ,0301 basic medicine ,Agonist ,Cancer Research ,Tetrahydronaphthalenes ,Cell Survival ,medicine.drug_class ,Brain tumor ,Sigma-2 receptor ,Astrocytoma ,Naphthalenes ,lcsh:RC254-282 ,Mice ,03 medical and health sciences ,0302 clinical medicine ,Piperidines ,Cell Movement ,In vivo ,Cell Line, Tumor ,Glioma ,Pancreatic cancer ,Neuroblastoma ,Genetics ,medicine ,Animals ,Humans ,Receptor ,Cell Proliferation ,Dose-Response Relationship, Drug ,Brain Neoplasms ,Chemistry ,Membrane Proteins ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,medicine.disease ,Xenograft Model Antitumor Assays ,Oxidative Stress ,030104 developmental biology ,Oncology ,030220 oncology & carcinogenesis ,Cancer research ,Research Article - Abstract
Background There are limited effective drugs that can reach the brain to target brain tumors, in particular glioblastoma, which is one of the most difficult cancers to be cured from. Because the overexpression of the sigma-2 receptor is frequently reported in glioma clinical samples and associated with poor prognosis and malignancy, we herein studied the anti-tumor effect of the sigma-2 receptor agonist PB221 (4-cyclohexyl-1-[3-(5-methoxy-1,2,3,4-tetrahydronaphthalen-1-yl)propyl]piperidine) on an anaplastic astrocytoma tumor model based on previous encouraging results in pancreatic cancer and neuroblastoma SK-N-SH cells. Methods The expression of the sigma-2 receptor, transmembrane protein 97 (TMEM97), in ALTS1C1 and UN-KC6141 cell lines was measured by RT-PCR and quantitative RT-PCR. The binding of sigma-2 receptor fluorescent ligands PB385 (6-[5-[3-(4-cyclohexylpiperazin-1-yl)propyl]-5,6,7,8-tetrahydronaphthalen-5-yloxy]-N-(7-nitro-2,1,3-benzoxadiazol-4-yl)hexanamine) and NO1 (2-{6-[2-(3-(6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)propyl)-3,4-dihydroisoquinolin-1(2H)-one-5-yloxy]hexyl}-5-(dimethylamino)isoindoline-1,3-dione) was examined by flow cytometry and the fluorescent plate reader. The antitumor activity of PB221 was initially examined in the murine brain tumor cell line ALTS1C1 and then in the murine pancreatic cell line UN-KC6141. The potential therapeutic efficacy of PB221 for murine brain tumors was examined by in vitro migration and invasion assays and in vivo ectopic and orthotopic ALTS1C1 tumor models. Results: The IC50 of PB221 for ALTS1C1 and UN-KC6141 cell lines was 10.61 ± 0.96 and 13.13 ± 1.15 μM, respectively. A low dose of PB221 (1 μM) significantly repressed the migration and invasion of ALTS1C1 cells, and a high dose of PB221 (20 μM) resulted in the apoptotic cell death of ALTS1C1 cells. These effects were reduced by the lipid antioxidant α-tocopherol, but not by the hydrophilic N-acetylcysteine, suggesting mitochondrial oxidative stress is involved. The in vivo study revealed that PB221 effectively retarded tumor growth to 36% of the control tumor volume in the ectopic intramuscular tumor model and increased the overall survival time by 20% (from 26 to 31 days) in the orthotopic intracerebral tumor model. Conclusions This study demonstrates that the sigma-2 receptor agonist PB221 has the potential to be an alternative chemotherapeutic drug for brain tumors with comparable side effects as the current standard-of-care drug, temozolomide. Electronic supplementary material The online version of this article (10.1186/s12885-019-5700-7) contains supplementary material, which is available to authorized users.
- Published
- 2019
30. Graphene Quantum Dots-Mediated Theranostic Penetrative Delivery of Drug and Photolytics in Deep Tumors by Targeted Biomimetic Nanosponges
- Author
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Shang-Hsiu Hu, Pei-Fan Hu, Wen-Ting Chen, Yu-Lin Su, Shou-Yuan Sung, Wei Cheng, and Chi-Shiun Chiang
- Subjects
Drug ,Erythrocytes ,media_common.quotation_subject ,Bioengineering ,Nanotechnology ,02 engineering and technology ,Theranostic Nanomedicine ,law.invention ,Mice ,Drug Delivery Systems ,law ,Biomimetics ,Cell Line, Tumor ,Neoplasms ,Quantum Dots ,medicine ,Animals ,Humans ,General Materials Science ,media_common ,Graphene ,Chemistry ,Mechanical Engineering ,Bilayer ,Cell Membrane ,General Chemistry ,Penetration (firestop) ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Nanostructures ,Red blood cell ,medicine.anatomical_structure ,Membrane ,Quantum dot ,Doxorubicin ,Drug delivery ,Graphite ,0210 nano-technology - Abstract
Dual-targeted delivery of drugs and energy by nanohybrids can potentially alleviate side effects and improve the unique features required for precision medicine. To realize this aim, however, the hybrids which are often rapidly removed from circulation and the piled up tumors periphery near the blood vessels must address the difficulties in low blood half-lives and tumor penetration. In this study, a sponge-inspired carbon composites-supported red blood cell (RBC) membrane that doubles as a stealth agent and photolytic carrier that transports tumor-penetrative agents (graphene quantum dots and docetaxel (GQD-D)) and heat with irradiation was developed. The RBC-membrane enveloped nanosponge (RBC@NS) integrated to a targeted protein that accumulates in tumor spheroids via high lateral bilayer fluidity exhibits an 8-fold increase in accumulation compared to the NS. Penetrative delivery of GQDs to tumor sites is actuated by near-infrared irradiation through a one-atom-thick structure, facilitating penetration and drug delivery deep into the tumor tissue. The synergy of chemotherapy and photolytic effects was delivered by the theranostic GQDs deep into tumors, which effectively damaged and inhibited the tumor in 21 days when treated with a single irradiation. This targeted RBC@GQD-D/NS with the capabilities of enhanced tumor targeting, NIR-induced drug penetration into tumors, and thermal ablation for photolytic therapy promotes tumor suppression and exhibits potential for other biomedical applications.
- Published
- 2018
31. Unprecedented 'All-in-One' Lanthanide-Doped Mesoporous Silica Frameworks for Fluorescence/MR Imaging and Combination of NIR Light Triggered Chemo-Photodynamic Therapy of Tumors
- Author
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Kuo Chu Hwang, Poliraju Kalluru, Chi-Shiun Chiang, and Raviraj Vankayala
- Subjects
Fluorescence-lifetime imaging microscopy ,Materials science ,Singlet oxygen ,medicine.medical_treatment ,Nanotechnology ,Photodynamic therapy ,02 engineering and technology ,Mesoporous silica ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Fluorescence ,Photobleaching ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,Biomaterials ,chemistry.chemical_compound ,chemistry ,Drug delivery ,Electrochemistry ,medicine ,Magnetic nanoparticles ,0210 nano-technology - Abstract
Designing a single multifunctional nanoparticle that can simultaneously impart both diagnostic and therapeutic functions is considered to be a long-lasting hurdle for biomedical researchers. Conventionally, a multifunctional nanoparticle can be constructed by integrating organic dyes/magnetic nanoparticles to impart diagnostic functions and anticancer drugs/photosensitizers to achieve therapeutic outcomes. These multicomponents systems usually suffer from severe photobleaching problems and cannot be activated by near-infrared (NIR) light. Here, it is demonstrated that all-in-one lanthanide-doped mesoporous silica frameworks (EuGdOx@MSF) loaded with an anticancer drug, doxorubicin (DOX) can facilitate simultaneous bimodal magnetic resonance (MR) imaging with approximately twofold higher T1-MR contrast as compared to the commercial Gd(III)-DTPA complex and fluorescence imaging with excellent photostability. Upon a very low dose (130 mW cm−2) of NIR light (980 nm) irradiation, the EuGdOx@MSF not only can sensitize formation of singlet oxygen (1O2) by itself but also can phototrigger the release of the DOX payload effectively to exert combined chemo-photodynamic therapeutic (PDT) effects and destroy solid tumors in mice completely. It is also discovered for the first time that the EuGdOx@MSF-mediated PDT effect can suppress the level of the key drug resistant protein, i.e., p-glycoprotein (p-gp) and help alleviate the drug resistant problem commonly associated with many cancers.
- Published
- 2016
32. Nano-graphene oxide-mediated In vivo fluorescence imaging and bimodal photodynamic and photothermal destruction of tumors
- Author
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Poliraju Kalluru, Raviraj Vankayala, Chi-Shiun Chiang, and Kuo Chu Hwang
- Subjects
Male ,Fluorescence-lifetime imaging microscopy ,Skin Neoplasms ,Light ,Theranostic Nanomedicine ,medicine.medical_treatment ,Melanoma, Experimental ,Photodynamic therapy ,02 engineering and technology ,Photochemistry ,01 natural sciences ,Nanocomposites ,Polyethylene Glycols ,Mice ,chemistry.chemical_compound ,Singlet Oxygen ,Singlet oxygen ,Melanoma ,Optical Imaging ,Oxides ,021001 nanoscience & nanotechnology ,Mechanics of Materials ,Graphite ,0210 nano-technology ,Half-Life ,medicine.drug ,Materials science ,Biophysics ,Antineoplastic Agents ,Bioengineering ,010402 general chemistry ,Biomaterials ,Folic Acid ,Cell Line, Tumor ,medicine ,Animals ,Humans ,Doxorubicin ,Lasers ,Cancer ,Phototherapy ,Photothermal therapy ,medicine.disease ,0104 chemical sciences ,Mice, Inbred C57BL ,Photochemotherapy ,chemistry ,Ceramics and Composites - Abstract
Cancer is one of the major life-threatening diseases among human beings. Developing a simple, cost-effective and biocompatible approach to treat cancers using ultra-low doses of light is a grand challenge in clinical cancer treatments. In this study, we report for the first time that nano-sized graphene oxide (GO) exhibits single-photon excitation wavelength dependent photoluminescence in the visible and short near-infrared (NIR) region, suitable for in vivo multi-color fluorescence imaging. We also demonstrate in both in vitro and in vivo experiments to show that nano GO can sensitize the formation of singlet oxygen to exert combined nanomaterial-mediated photodynamic therapeutic (NmPDT) and photothermal therapy (NmPTT) effects on the destruction of B16F0 melanoma tumors in mice using ultra-low doses (∼0.36 W/cm 2 ) of NIR (980 nm) light. The average half-life span of the mice treated by the GO-PEG-folate-mediated NmPDT effects is beyond 30 days, which is ∼1.8 times longer than the mice treated with doxorubicin (17 days). Overall, the current study points out a successful example of using GO-PEG-folate nanocomposite as a theranostic nanomedicine to exert simultaneously in vivo fluorescent imaging as well as combined NmPDT and NmPTT effects for clinical cancer treatments.
- Published
- 2016
33. Dual-Targeted Photopenetrative Delivery of Multiple Micelles/Hydrophobic Drugs by a Nanopea for Enhanced Tumor Therapy
- Author
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Chien-Ting Lin, Yu-Fen Huang, I.-N. Lin, Shang-Hsiu Hu, Shou-Yuan Sung, Chi-Shiun Chiang, and Yu-Lin Su
- Subjects
Materials science ,Tumor therapy ,Nanotechnology ,02 engineering and technology ,DUAL (cognitive architecture) ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Micelle ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,Biomaterials ,Electrochemistry ,0210 nano-technology - Published
- 2016
34. Photodynamic Therapy: Unprecedented Theranostic LaB 6 Nanocubes‐Mediated NIR‐IIb Photodynamic Therapy to Conquer Hypoxia‐Induced Chemoresistance (Adv. Funct. Mater. 36/2020)
- Author
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Raviraj Vankayala, Naresh Kuthala, Chi-Shiun Chiang, and Kuo Chu Hwang
- Subjects
Biomaterials ,Materials science ,Tumor hypoxia ,medicine.medical_treatment ,Electrochemistry ,medicine ,Cancer research ,Photodynamic therapy ,Hypoxia (medical) ,medicine.symptom ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials - Published
- 2020
35. Unprecedented Theranostic LaB 6 Nanocubes‐Mediated NIR‐IIb Photodynamic Therapy to Conquer Hypoxia‐Induced Chemoresistance
- Author
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Kuo Chu Hwang, Raviraj Vankayala, Naresh Kuthala, and Chi-Shiun Chiang
- Subjects
Biomaterials ,Materials science ,Tumor hypoxia ,medicine.medical_treatment ,Electrochemistry ,medicine ,Cancer research ,Photodynamic therapy ,Hypoxia (medical) ,medicine.symptom ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials - Published
- 2020
36. Size and Shape Effects of Near‐Infrared Light‐Activatable Cu 2 (OH)PO 4 Nanostructures on Phototherapeutic Destruction of Drug‐Resistant Hypoxia Tumors
- Author
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Chi-Shiun Chiang, Kuo Chu Hwang, Raviraj Vankayala, and Karthik Nuthalapati
- Subjects
chemistry.chemical_classification ,Reactive oxygen species ,Nanostructure ,Near infrared light ,chemistry ,Biophysics ,Hypoxia (environmental) ,General Materials Science ,General Chemistry ,Drug resistance ,Condensed Matter Physics - Published
- 2020
37. Graphene oxide sensitizes cancer cells to chemotherapeutics by inducing early autophagy events, promoting nuclear trafficking and necrosis
- Author
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Yu-Chen Hu, Yu Chan Chao, Mei-Wei Lin, Hsing-Yu Tuan, Mu-Nung Hsu, Chi-Shiun Chiang, Guan Yu-Chen, and Kuan Chen Lin
- Subjects
0301 basic medicine ,Autophagosome ,inorganic chemicals ,Programmed cell death ,autophagy ,Active Transport, Cell Nucleus ,Medicine (miscellaneous) ,cisplatin ,Antineoplastic Agents ,Importin ,Cell Line ,03 medical and health sciences ,Necrosis ,Cell Line, Tumor ,medicine ,LC3 ,Humans ,Cytotoxicity ,Pharmacology, Toxicology and Pharmaceutics (miscellaneous) ,neoplasms ,Cisplatin ,Cell Nucleus ,Cell Death ,Chemistry ,Autophagy ,chemoresistance ,Oxides ,nuclear import ,female genital diseases and pregnancy complications ,Nanostructures ,Protein Transport ,030104 developmental biology ,A549 Cells ,Drug Resistance, Neoplasm ,Cancer cell ,Colonic Neoplasms ,Cancer research ,graphene oxide ,Graphite ,Nuclear transport ,Microtubule-Associated Proteins ,medicine.drug ,HeLa Cells ,Research Paper - Abstract
Rationale: Cisplatin (CDDP) is a broad-spectrum anticancer drug but chemoresistance to CDDP impedes its wide use for cancer therapy. Autophagy is an event occurring in the cytoplasm and cytoplasmic LC3 puncta formation is a hallmark of autophagy. Graphene oxide (GO) is a nanomaterial that provokes autophagy in CT26 colon cancer cells and confers antitumor effects. Here we aimed to evaluate whether combined use of GO with CDDP (GO/CDDP) overcomes chemoresistance in different cancer cells and uncover the underlying mechanism. Methods: We treated different cancer cells with GO/CDDP and evaluated the cytotoxicity, death mechanism, autophagy induction and nuclear entry of CDDP. We further knocked down genes essential for autophagic flux and deciphered which step is critical to nuclear import and cell death. Finally, we performed immunoprecipitation, mass spectrometry and immunofluorescence labeling to evaluate the association of LC3 and CDDP. Results: We uncovered that combination of GO and CDDP (GO/CDDP) promoted the killing of not only CT26 cells, but also ovarian, cervical and prostate cancer cells. In the highly chemosensitized Skov-3 cells, GO/CDDP significantly enhanced concurrent nuclear import of CDDP and autophagy marker LC3 and elevated cell necrosis, which required autophagy initiation and progression but did not necessitate late autophagy events (e.g., autophagosome completion and autolysosome formation). The GO/CDDP-elicited nuclear trafficking and cell death also required importin α/β, and LC3 also co-migrated with CDDP and histone H1/H4 into the nucleus. In particular, GO/CDDP triggered histone H4 acetylation in the nucleus, which could decondense the chromosome and enable CDDP to more effectively access chromosomal DNA to trigger cell death. Conclusion: These findings shed light on the mechanisms of GO/CDDP-induced chemosensitization and implicate the potential applications of GO/CDDP to treat multiple cancers.
- Published
- 2017
38. Complete destruction of deep-tissue buried tumors via combination of gene silencing and gold nanoechinus-mediated photodynamic therapy
- Author
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Kuo Chu Hwang, Priya Vijayaraghavan, Hsing-Wen Sung, Chi-Shiun Chiang, and Raviraj Vankayala
- Subjects
Pathology ,medicine.medical_specialty ,Cell Survival ,medicine.medical_treatment ,Biophysics ,Metal Nanoparticles ,Bioengineering ,Photodynamic therapy ,Biomaterials ,Mice ,Nanocapsules ,Deep tissue ,Animals ,Humans ,Medicine ,Gene silencing ,Gene Silencing ,RNA, Small Interfering ,Photosensitizing Agents ,business.industry ,Cancer ,Light irradiation ,Genetic Therapy ,Neoplasms, Experimental ,medicine.disease ,Combined Modality Therapy ,Anticancer drug ,Therapeutic modalities ,Treatment Outcome ,Photochemotherapy ,Mechanics of Materials ,Ceramics and Composites ,Cancer research ,Combined therapy ,Gold ,business ,HeLa Cells - Abstract
Cancer is one of the major diseases leading to human deaths. Complete destruction of deep tissue-buried tumors using non-invasive therapies is a grand challenge in clinical cancer treatments. Many therapeutic modalities were developed to tackle this problem, but only partial tumor suppression or delay growths were usually achieved. In this study, we report for the first time that complete destruction of deep tissue-buried tumors can be achieved by combination of gold nanoechinus (Au NEs)-mediated photodynamic therapy (PDT) and gene silencing under ultra-low doses of near infra-red (NIR) light irradiation (915 nm, 340 mW/cm(2); 1064 nm, 420 mW/cm(2)) in the first and second biological windows. The average lifespan of the mice treated by the above combined therapy is beyond 40 days, which are ∼ 2.6 times longer than that (15 days) observed from the anticancer drug doxorubicin-treated group. The current study points out a new direction for the therapeutic design to treat deeply seated tumors in future cancer treatments.
- Published
- 2015
39. Nucleus-Targeting Gold Nanoclusters for Simultaneous In Vivo Fluorescence Imaging, Gene Delivery, and NIR-Light Activated Photodynamic Therapy
- Author
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Karthik Nuthalapati, Chien-Lin Kuo, Raviraj Vankayala, Kuo Chu Hwang, and Chi-Shiun Chiang
- Subjects
Fluorescence-lifetime imaging microscopy ,Materials science ,biology ,Singlet oxygen ,medicine.medical_treatment ,Photodynamic therapy ,Transfection ,Gene delivery ,Condensed Matter Physics ,biology.organism_classification ,Molecular biology ,Electronic, Optical and Magnetic Materials ,Biomaterials ,HeLa ,chemistry.chemical_compound ,chemistry ,Cytoplasm ,Cancer cell ,Electrochemistry ,Biophysics ,medicine - Abstract
The nucleus is one of the most important cellular organelles and molecular anticancer drugs, such as cisplatin and doxorubicin, that target DNA inside the nucleus, are proving to be more effective at killing cancer cells than those targeting at cytoplasm. Nucleus-targeting nanomaterials are very rare. It is a grand challenge to design highly efficient nucleus-targeting multifunctional nanomaterials that are able to perform simultaneous bioimaging and therapy for the destruction of cancer cells. Here, unique nucleus-targeting gold nanoclusters (TAT peptide–Au NCs) are designed to perform simultaneous in vitro and in vivo fluorescence imaging, gene delivery, and near-infrared (NIR) light activated photodynamic therapy for effective cancer cell killing. Confocal laser scanning microscopy observations reveal that TAT peptide–Au NCs are distributed throughout the cytoplasm region with a significant fraction entering into the nucleus. The TAT peptide–Au NCs can also act as DNA nanocargoes to achieve very high gene transfection efficiencies (≈81%) in HeLa cells and in zebrafish. Furthermore, TAT peptide–Au NCs are also able to sensitize formation of singlet oxygen (1O2) without the co-presence of organic photosensitizers for the destruction of cancer cells upon NIR light photoexcitation.
- Published
- 2015
40. Graphene oxide as a chemosensitizer: Diverted autophagic flux, enhanced nuclear import, elevated necrosis and improved antitumor effects
- Author
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Kuan Chen Lin, Hsing-Yu Tuan, Yu-Chen Hu, Hong Jie Yang, Chiu-Ling Chen, Guan-Yu Chen, Chi-Shiun Chiang, Chia Le Meng, and Kuei-Chang Li
- Subjects
inorganic chemicals ,Autophagosome ,Programmed cell death ,Necrosis ,Active Transport, Cell Nucleus ,Biophysics ,Chemosensitizer ,Antineoplastic Agents ,Bioengineering ,Biology ,HMGB1 ,Biomaterials ,Cell Line, Tumor ,Antineoplastic Combined Chemotherapy Protocols ,Autophagy ,medicine ,Animals ,neoplasms ,Cell Nucleus ,Cisplatin ,Mice, Inbred BALB C ,Oxides ,female genital diseases and pregnancy complications ,Biochemistry ,Mechanics of Materials ,Colonic Neoplasms ,embryonic structures ,Cancer cell ,Ceramics and Composites ,Cancer research ,biology.protein ,Graphite ,medicine.symptom ,Microtubule-Associated Proteins ,medicine.drug - Abstract
Graphene oxide (GO) is a nanomaterial that provokes autophagy in CT26 colon cancer cells and confers antitumor effects. Here we demonstrated that both GO and the chemotherapy drug cisplatin (CDDP) induced autophagy but elicited low degrees of CT26 cell death. Strikingly, GO combined with CDDP (GO/CDDP) potentiated the CT26 cell killing via necrosis. GO/CDDP not only elicited autophagy, but induced the nuclear import of CDDP and the autophagy marker LC3. The nuclear LC3 did not co-localize with p62 or Lamp-2, neither did blocking autolysosome formation significantly hinder the nuclear import of LC3/CDDP and necrosis, indicating that autophagosome and autolysosome formation was dispensable. Conversely, suppressing phagophore formation and importin-α/β significantly alleviated the nuclear import of LC3/CDDP and necrosis. These data suggested that GO/CDDP diverted the LC3 flux in the early phase of autophagy, resulting in LC3 trafficking towards the nucleus in an importin-α/β-dependent manner, which concurred with the CDDP nuclear import and necrosis. Intratumoral injection of GO/CDDP into mice bearing CT26 colon tumors potentiated immune cell infiltration and promoted cell death, autophagy and HMGB1 release, thereby synergistically augmenting the antitumor effects. Altogether, we unveiled a mechanism concerning how nanomaterials chemosensitize cancer cells and demonstrated the potentials of GO as a chemosensitizer.
- Published
- 2015
41. Albumin-Gold Nanorod Nanoplatform for Cell-Mediated Tumoritropic Delivery with Homogenous ChemoDrug Distribution and Enhanced Retention Ability
- Author
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Yu-Fen Huang, Yuh-Chang Sun, Hsien-Ting Chiu, Cheng-Kuan Su, and Chi-Shiun Chiang
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Male ,drug retention ability ,Serum albumin ,Medicine (miscellaneous) ,core-shell nanoparticle ,Antineoplastic Agents ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Mice ,Drug Therapy ,In vivo ,gold nanorod ,Albumins ,medicine ,Distribution (pharmacology) ,Animals ,Doxorubicin ,Pharmacology, Toxicology and Pharmaceutics (miscellaneous) ,albumin ,Drug Carriers ,Nanotubes ,biology ,Chemistry ,Macrophages ,Prostatic Neoplasms ,Hyperthermia, Induced ,Photothermal therapy ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Mice, Inbred C57BL ,cell-mediated drug delivery ,Disease Models, Animal ,RAW 264.7 Cells ,Drug delivery ,biology.protein ,Cancer research ,Gold ,0210 nano-technology ,Drug carrier ,Intracellular ,homogenous drug distribution ,medicine.drug ,Research Paper - Abstract
Recently, living cells with tumor-homing properties have provided an exciting opportunity to achieve optimal delivery of nanotherapeutic agents. However, premature payload leakage may impair the host cells, often leading to inadequate in vivo investigations or therapeutic efficacy. Therefore, a nanoplatform that provides a high drug-loading capacity and the precise control of drug release is required. In the present study, a robust one-step synthesis of a doxorubicin (DOX)-loaded gold nanorod/albumin core-shell nanoplatform (NR@DOX:SA) was designed for effective macrophage-mediated delivery to demonstrate how nanoparticle-loaded macrophages improve photothermal/chemodrug distribution and retention ability to achieve enhanced antitumor effects. The serum albumin shell of these nanoagents served as a drug reservoir to delay the intracellular DOX release and drug-related toxicity that impairs the host cell carriers. Near-infrared laser irradiation enabled on-demand payload release to destroy neighboring tumor cells. A series of in vivo quantitative analyses demonstrated that the nanoengineered macrophages delivered the nanodrugs through tumor-tropic migration to tumor tissues, resulting in the twice homogenous and efficient photothermal activations of drug release to treat prostate cancer. By contrast, localized pristine NR@DOX:SAs exhibit limited photothermal drug delivery that further reduces their retention ability and therapeutic efficacy after second combinational treatment, leading to a failure of cancer therapy. Moreover, the resultant unhealable wounds impair quality of life. Free DOX has rapid clearance and therefore exhibits limited antitumor effects. Our findings suggest that in comparison with pristine nanoparticles or free DOX, the nanoengineered macrophages effectively demonstrate the importance and effect of homogeneous drug distribution and retention ability in cancer therapy.
- Published
- 2017
42. Gadolinium-doped iron oxide nanoparticles induced magnetic field hyperthermia combined with radiotherapy increases tumour response by vascular disruption and improved oxygenation
- Author
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Chi-Shiun Chiang, Fu-Nien Wang, Pei-Shin Jiang, Hsin-Yu Tsai, and Philip Drake
- Subjects
Male ,Hyperthermia ,Cancer Research ,Pathology ,medicine.medical_specialty ,Necrosis ,Physiology ,Gadolinium ,medicine.medical_treatment ,chemistry.chemical_element ,02 engineering and technology ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Cell Line, Tumor ,Physiology (medical) ,medicine ,Animals ,Combined Modality Therapy ,Hypoxia ,Magnetite Nanoparticles ,Prostatic Neoplasms ,Hyperthermia, Induced ,Oxygenation ,Hypoxia (medical) ,021001 nanoscience & nanotechnology ,medicine.disease ,Tumor Burden ,Mice, Inbred C57BL ,Radiation therapy ,Magnetic Fields ,chemistry ,030220 oncology & carcinogenesis ,Cancer research ,medicine.symptom ,0210 nano-technology ,Iron oxide nanoparticles - Abstract
The gadolinium-doped iron oxide nanoparticles (GdIONP) with greater specific power adsorption rate (SAR) than Fe3O4 was developed and its potential application in tumour therapy and particle tracking were demonstrated in transgenic adenocarcinoma of the mouse prostate C1 (TRAMP-C1) tumours. The GdIONPs accumulated in tumour region during the treatment could be clearly tracked and quantified by T2-weighted MR imaging. The therapeutic effects of GdIONP-mediated hyperthermia alone or in combination with radiotherapy (RT) were also evaluated. A significant increase in the tumour growth time was observed following the treatment of thermotherapy (TT) only group (2.5 days), radiation therapy only group (4.5 days), and the combined radio-thermotherapy group (10 days). Immunohistochemical staining revealed a reduced hypoxia region with vascular disruption and extensive tumour necrosis following the combined radio-thermotherapy. These results indicate that GdIONP-mediated hyperthermia can improve the efficacy of RT by its dual functions in high temperature (temperature greater than 45 °C)-mediated thermal ablation and mild-temperature hyperthermia (MTH) (temperature between 39 and 42 °C)-mediated reoxygenation.
- Published
- 2017
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43. Designing Multi-Branched Gold Nanoechinus for NIR Light Activated Dual Modal Photodynamic and Photothermal Therapy in the Second Biological Window
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Priya Vijayaraghavan, Cheng-Hong Liu, Chi-Shiun Chiang, Kuo Chu Hwang, and Raviraj Vankayala
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Photosensitizing Agents ,Nir light ,Materials science ,Infrared Rays ,Singlet oxygen ,Mechanical Engineering ,Melanoma, Experimental ,Window (computing) ,Nanotechnology ,Photothermal therapy ,Nanostructures ,Mice ,chemistry.chemical_compound ,Photochemotherapy ,chemistry ,Mechanics of Materials ,Drug Design ,Animals ,General Materials Science ,Gold - Abstract
Gold nanoechinus can sensitize the formation of singlet oxygen in the first and the second near-infra red (NIR) biological windows and exert in vivo dual modal photodynamic and photothermal therapeutic effects (PDT and PTT) to destruct the tumors completely. This is the first literature example of the destruction of tumors in NIR window II induced by dual modal nanomaterial-mediated photodynamic and photothermal therapy (NmPDT & NmPTT).
- Published
- 2014
44. Effects of pre-irradiation and SDF-1 suppression on the progression of murine astrocytoma cells grown in different stromal beds
- Author
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Ching-Fang Yu, Fang-Hsin Chen, Chi-Min Lin, Ying-Chieh Yang, Chien-Sheng Tsai, Shu-Chi Wang, Chi-Shiun Chiang, and Ji-Hong Hong
- Subjects
CD31 ,Pathology ,medicine.medical_specialty ,Stromal cell ,medicine.medical_treatment ,Astrocytoma ,Mice ,Stroma ,Cell Line, Tumor ,Glioma ,medicine ,Animals ,Radiology, Nuclear Medicine and imaging ,Gene Silencing ,Cell Proliferation ,Radiological and Ultrasound Technology ,Brain Neoplasms ,business.industry ,Microvascular Density ,Brain ,medicine.disease ,Chemokine CXCL12 ,Mice, Inbred C57BL ,Radiation therapy ,Cell Transformation, Neoplastic ,Thigh ,Immunohistochemistry ,Stromal Cells ,business - Abstract
Purpose: To examine whether brain tumors grown in pre-irradiated (PreIR) thigh have a similar tumor bed effect (TBE) as in PreIR brain tissue.Material and methods: Tumor growth delay and immunohistochemical (IHC) staining for CD31, an endothelial surface marker, and PIMO, a hypoxia marker, were used to study the TBE of a murine astrocytoma, ALTS1C1, or a stromal-derived factor-1 (SDF-1) gene-silenced astrocytoma, ALTS1C1-SDFkd, growing in different PreIR stroma beds.Results: ALTS1C1 tumors growing in both PreIR brain and PreIR thigh had reduced microvascular density (MVD) and more chronic hypoxia, but tumor growth delay was only seen in PreIR brain tissue. In contrast, ALTS1C1-SDFkd tumors showed tumor growth delay in PreIR thigh, with little effect in PreIR brain tissue.Conclusions: This study cautions that both the tumor and the nature of the PreIR stromal bed are important when using pre-irradiation as a model of recurrent brain tumors after radiation therapy.
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- 2014
45. Bioimaging: Multi-Branched Plasmonic Gold Nanoechinus-Based Triple Modal Bioimaging: An Efficient NIR-to-NIR Up and Down-Conversion Emission and Photoacoustic Imaging (Adv. Mater. Technol. 7/2016)
- Author
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Kuo Chu Hwang, Meng Lin Li, Huihua Kenny Chiang, Priya Vijayaraghavan, and Chi-Shiun Chiang
- Subjects
Near infrared light ,Materials science ,Mechanics of Materials ,business.industry ,Down conversion ,Optoelectronics ,Photoacoustic imaging in biomedicine ,General Materials Science ,business ,Industrial and Manufacturing Engineering ,Photon upconversion ,Plasmon - Published
- 2016
46. Photosensitization of Singlet Oxygen and In Vivo Photodynamic Therapeutic Effects Mediated by PEGylated W18O49Nanowires
- Author
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Kuo Chu Hwang, Raviraj Vankayala, Poliraju Kalluru, and Chi-Shiun Chiang
- Subjects
Cell Survival ,Infrared Rays ,medicine.medical_treatment ,Transplantation, Heterologous ,Melanoma, Experimental ,Nanowire ,Photodynamic therapy ,Photochemistry ,Tungsten ,Catalysis ,Polyethylene Glycols ,Mice ,chemistry.chemical_compound ,In vivo ,PEG ratio ,medicine ,Animals ,Humans ,Sodium Azide ,chemistry.chemical_classification ,Reactive oxygen species ,Antibiotics, Antineoplastic ,Photosensitizing Agents ,Singlet Oxygen ,Nanowires ,Singlet oxygen ,Temperature ,food and beverages ,Oxides ,General Chemistry ,General Medicine ,Photothermal therapy ,Mice, Inbred C57BL ,Photochemotherapy ,chemistry ,Doxorubicin ,Ethylene glycol ,HeLa Cells - Abstract
Upon excitation with near-infrared light (980 nm), PEGylated W18 O49 nanowires can sensitize the formation of singlet oxygen and thus reactive oxygen species (ROS). The resulting photodynamic therapy (PDT) effect can cause the destruction of tumors in the absence of organic photosensitizers. PEG=poly(ethylene glycol), PTT=photothermal therapy.
- Published
- 2013
47. Paradigm Shift in Tumor Microenvironment: RT Alone Versus Combination of Local Interleukin-12 Treatment and RT
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Fang-Hsin Chen, Chi-Shiun Chiang, Ji-Hong Hong, and C.F. Yu
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Cancer Research ,Tumor microenvironment ,Radiation ,Oncology ,business.industry ,Cancer research ,Interleukin 12 ,Medicine ,Radiology, Nuclear Medicine and imaging ,business - Published
- 2017
48. A Preclinical Study to Explore Vasculature Differences Between Primary and Recurrent Tumors Using Ultrasound Doppler Imaging
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Chih-Kuang Yeh, Jia-Jiun Chen, Chi-Shiun Chiang, Ji-Hong Hong, and Sheng-Yung Fu
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Male ,Pathology ,medicine.medical_specialty ,Acoustics and Ultrasonics ,Angiogenesis ,Biophysics ,Mice, Transgenic ,Diagnosis, Differential ,Mice ,Vasculogenesis ,Cell Line, Tumor ,Animals ,Medicine ,Radiology, Nuclear Medicine and imaging ,Neovascularization, Pathologic ,Radiological and Ultrasound Technology ,business.industry ,Ultrasound ,Ultrasonography, Doppler ,Neoplasms, Experimental ,medicine.disease ,Primary tumor ,Tumor Burden ,Mice, Inbred C57BL ,Tumor progression ,Adenocarcinoma ,Radiology ,Neoplasm Recurrence, Local ,Differential diagnosis ,business ,Perfusion ,Blood Flow Velocity - Abstract
The purpose of this preclinical study was to perform a longitudinal investigation of the function and morphology of the vasculatures of primary and recurrent tumors, because recurrent tumors have lower curability. Thus, elucidating differences in the features of the vasculatures of primary and recurrent tumors could help to improve tumor therapies. The transgenic adenocarcinoma of the mouse prostate tumors were transplanted in nonirradiated and with 25 Gy of preirradiation normal tissues to produce the primary and recurrent tumor models, respectively. The perfusion and branching index of tumor vasculatures were characterized to reveal the function and morphology information, respectively. The blood vessels were more dilated and continuous in recurrent tumors than in primary tumors. During tumor progression, the perfusion increased in primary tumors but did not change significantly in recurrent tumors. The tumor perfusion was lower in recurrent tumors than in primary tumors, whereas branching index in 2-D ultrasound images did not differ between the two tumor models. Furthermore, the introducing 3-D volumetric power Doppler image may have the potential for accurately revealing the morphologic features within tumors. The results of this study suggest that power Doppler imaging is an easily applied and rapid method for noninvasively assessing the vascular features of primary and recurrent tumors and for exploring differences between their vasculature pathways.
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- 2013
49. Characterization of tumor vasculature distributions in central and peripheral regions based on Doppler ultrasound
- Author
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Chi-Shiun Chiang, Chih-Kuang Yeh, Jia-Jiun Chen, Sheng-Yung Fu, and Ji-Hong Hong
- Subjects
CD31 ,Pathology ,medicine.medical_specialty ,business.industry ,Ultrasound ,Hemodynamics ,Cancer ,General Medicine ,medicine.disease ,Peripheral ,Tumor progression ,medicine ,Immunohistochemistry ,business ,Perfusion - Abstract
Purpose: Tumor heterogeneity is a major obstacle to therapy, and thus, how to achieve the maximal therapeutic gain in tumor suppression is an important issue. To accomplish this goal, assessing changes in tumor behaviors before treatment is helpful for physicians to adjust treatment schedules. In this study, the authors longitudinally and spatially investigated tumor perfusion and vascular density by power Dopplerimaging and immunohistochemical analysis, respectively. Moreover, the authors developed a method to describe quantitatively the spatial distribution of the vasculature within the central and peripheral regions of tumors. Methods: Tumor perfusion was estimated by power Dopplerimages at an operating frequency of 25 MHz. To avoid the attenuation effect of such high-frequency ultrasound, murine tumors were subcutaneously transplanted into the thighs of mice and then monitored for 11 days. The tumors were removed at various time intervals for immunohistochemical analysis of their vascular density using CD31 staining. The spatial characteristics of the tumor vasculature were quantified by aγ value, which characterizes the rate at which vascular signals increase with the fractional sizes of the peripheral area within the tumor. Results: During tumor progression, the volume of tumor perfusion in the power Dopplerimages was strongly correlated with the vascular density determined by immunohistochemical analysis. In addition, theγ value significantly decreased with increased tumor size in the power Dopplerimages but not in the immunohistochemical analysis. Conclusions: Although the tumor perfusion and vascular density estimates showed good temporal correlations during tumor progression, they did not show good spatial correlations due to tumor perfusion patterns changing from homogeneous to heterogeneous. In contrast to the perfusion patterns, the vascular density of the tumor remained uniformly distributed. In the present study, no necrosis regions were found in the tumor experiments. Furthermore, the measurement ofγ value is a simple method for assessing the vasculatures of spatial distribution within tumors.
- Published
- 2012
50. The Penetrated Delivery of Drug and Energy to Tumors by Lipo-Graphene Nanosponges for Photolytic Therapy
- Author
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Ru-Siou Hsu, Chi-Shiun Chiang, Yu-Chen Sheu, Shuo-Yuan Sung, Shang-Hsiu Hu, Kuan-Ting Chen, and Yu-Lin Su
- Subjects
Drug ,Materials science ,Graphene ,media_common.quotation_subject ,General Engineering ,General Physics and Astronomy ,Nanotechnology ,02 engineering and technology ,Photothermal therapy ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,law.invention ,chemistry.chemical_compound ,chemistry ,Transcytosis ,law ,Cancer cell ,General Materials Science ,0210 nano-technology ,Lipid bilayer ,Perfluorohexane ,media_common ,Nanosheet - Abstract
Delivery of drug and energy within responsive carriers that effectively target and accumulate in cancer cells promises to mitigate side effects and to enhance the uniquely therapeutic efficacy demanded for personalized medicine. To achieve this goal, however, these carriers, which are usually piled up at the periphery of tumors near the blood vessel, must simultaneously overcome the challenges associated with low tumor penetration and the transport of sufficient cargos to deep tumors to eradicate whole cancer cells. Here, we report a sponge-like carbon material on graphene nanosheet (graphene nanosponge)-supported lipid bilayers (lipo-GNS) that doubles as a photothermal agent and a high cargo payload platform and releases a burst of drug/energy (docetaxel (DTX) and gasified perfluorohexane (PFH)) and intense heat upon near-infrared irradiation. Ultrasmall lipo-GNS (40 nm) modified with a tumor-targeting protein that penetrates tumor spheroids through transcytosis exhibited a 200-fold increase in accumulation relative to a 270 nm variant of the lipo-GNS. Furthermore, a combination of therapeutic agents (DTX and PFH) delivered by lipo-GNS into tumors was gasified and released into tumor spheroids and successfully ruptured and suppressed xenograft tumors in 16 days without distal harm when subjected to a single 10 min near-infrared laser treatment. Moreover, no tumor recurrence was observed over 60 days post-treatment. This sophisticated lipo-GNS is an excellent delivery platform for penetrated, photoresponsive, and combined gasification/chemo-thermotherapy to facilitate tumor treatment and for use in other biological applications.
- Published
- 2016
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