254 results on '"Shi, Ying-Li"'
Search Results
2. Chemotherapy‐Enabled Colorectal Cancer Immunotherapy of Self‐Delivery Nano‐PROTACs by Inhibiting Tumor Glycolysis and Avoiding Adaptive Immune Resistance
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Lin‐Ping Zhao, Rong‐Rong Zheng, Xiao‐Na Rao, Chu‐Yu Huang, Hang‐Yu Zhou, Xi‐Yong Yu, Xue‐Yan Jiang, and Shi‐Ying Li
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chemotherapy ,colorectal cancer ,immunotherapy ,nano‐PROTACs ,self‐delivery ,Science - Abstract
Abstract The chemo‐regulation abilities of chemotherapeutic medications are appealing to address the low immunogenicity, immunosuppressive lactate microenvironment, and adaptive immune resistance of colorectal cancer. In this work, the proteolysis targeting chimera (PROTAC) of BRD4 (dBET57) is found to downregulate colorectal cancer glycolysis through the transcription inhibition of c‐Myc, which also inhibits the expression of programmed death ligand 1 (PD‐L1) to reverse immune evasion and avoid adaptive immune resistance. Based on this, self‐delivery nano‐PROTACs (designated as DdLD NPs) are further fabricated by the self‐assembly of doxorubicin (DOX) and dBET57 with the assistance of DSPE‐PEG2000. DdLD NPs can improve the stability, intracellular delivery, and tumor targeting accumulation of DOX and dBET57. Meanwhile, the chemotherapeutic effect of DdLD NPs can efficiently destroy colorectal cancer cells to trigger a robust immunogenic cell death (ICD). More importantly, the chemo‐regulation effects of DdLD NPs can inhibit colorectal cancer glycolysis to reduce the lactate production, and downregulate the PD‐L1 expression through BRD4 degradation. Taking advantages of the chemotherapy and chemo‐regulation ability, DdLD NPs systemically activated the antitumor immunity to suppress the primary and metastatic colorectal cancer progression without inducing any systemic side effects. Such self‐delivery nano‐PROTACs may provide a new insight for chemotherapy‐enabled tumor immunotherapy.
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- 2024
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3. Kinetic Model for Denitration Reaction Process of Cylindrical Single-Base Gun Propellant
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Fan Cui, Hong-Lei Fan, Shi-Ying Li, Xiao-Qing Wu, Chun-Zhi Li, and Zhong-Liang Xiao
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Chemistry ,QD1-999 - Published
- 2023
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4. Study on the mechanism of action of effective monomeric, berberine of Xianglian Pill in inhibiting human colon cancer cells based on fatty acid synthase target
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Shi-ying Li, Yun Li, Zhong-hua Wu, Zhang-jie Zhou, Cun-ya Li, Ting-ting Wu, Shu-juan Fu, Zhi-ying Wang, Zhi-xian Zhong, and Yi Zhong
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Xianglian Wan ,Xianglian pills ,Berberine ,Fatty acid synthase ,Acetyl CoA carboxylase ,Colorectal adenocarcinoma ,Medicine - Abstract
Background and aim: Xianglian Wan (XLW) as a classic prescription of traditional Chinese medicine protects digestive function; however, few studies have investigated its anti-colorectal cancer effects. This study verified that the effective monomer berberine of XLW plays an antitumo r role by regulating the acetyl-CoA carboxylase (ACC)/fatty acid synthase (FASN) lipid metabolism-related signaling pathway. Experimental procedure: The connection between XLW and FASN was identified through literature mining, bioinformatics and structural biology. In vivo experiments verified the rationality of the antitumor effect of berberine by regulating the ACC/FASN pathway, and in vitro experiments verified the regulatory relationship between berberine and FASN. Results and conclusion: The most frequent Chinese medicine component in XLW was Coptis chinensis. Berberine, the active ingredient of XLW, has a FASN binding site. FASN expression is higher in tumor tissues than in normal tissues. FASN is related to colorectal adenocarcinoma occurrence and patient survival time. Experiments showed that XLW, berberine and orlistat (FASN inhibitor) can cooperate with palmitic acid (PA) to inhibit tumors in mice. Berberine can downregulate FASN and ACC expression in tumor tissues and inhibit the increase in acetyl-CoA, the intermediate product of exogenous PA intake. The mechanism by which berberine inhibits colon cancer cell proliferation by lowering lipids is related to its downregulation of FASN protein expression. The ACC/FASN signaling pathway is a critical pathway through which berberine, the effective monomer of XLW, plays an antitumor role in colon cancer.
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- 2023
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5. In-situ self-assembly of low-dimensional organic micro/nanocrystals within nanofibers for the fabrication of large-area luminescent textiles
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Li, Yuan-Yuan, Miao, Ke-Xuan, Shi, Ying-Li, Su, Yang, Wu, Bin, Rong, Yun, Liu, Jin-Zhuo, Chen, Dan, Lu, Hang, Yang, Xiao-Dong, Liao, Liang-Sheng, Zhuo, Ming-Peng, and Zhang, Ke-Qin
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- 2024
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6. Large-area nanofiber membrane of NIR photothermal Cs0.32WO3 for flexible and all-weather solar thermoelectric generation
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Zhuo, Sheng, Jiang, Wangkai, Dong Zhao, Yu, Liu, Jin-Zhuo, Zhao, Xinyu, Ye, Jianyong, Zheng, Min, Wang, Zuo-Shan, Zhou, Xiao-Qing, Wang, Xiao-Qiao, Shi, Ying-Li, Chen, Weifan, Zhang, Ke-Qin, Liao, Liang-Sheng, and Zhuo, Ming-Peng
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- 2024
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7. Bandgap narrowing and hole self-trapping reduction in Ga2O3 by Bi2O3 alloying
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Matar, Fatima, Shi, Ying-Li, Ling, Francis Chi-Chung, Salih, Amar, Irvine, Curtis P., De Silva, Sujeewa, Phillips, Matthew R., and Ton-That, Cuong
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- 2023
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8. Potential application of let-7a antagomir in injured peripheral nerve regeneration
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Qian-Qian Chen, Qian-Yan Liu, Pan Wang, Tian-Mei Qian, Xing-Hui Wang, Sheng Yi, and Shi-Ying Li
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chitosan ,chitosan-hydrogel scaffold ,let-7 ,let-7a antagomir ,mirna ,nerve graft ,peripheral nerve injury ,peripheral nerve regeneration ,schwann cells ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Neurotrophic factors, particularly nerve growth factor, enhance neuronal regeneration. However, the in vivo applications of nerve growth factor are largely limited by its intrinsic disadvantages, such as its short biological half-life, its contribution to pain response, and its inability to cross the blood-brain barrier. Considering that let-7 (human miRNA) targets and regulates nerve growth factor, and that let-7 is a core regulator in peripheral nerve regeneration, we evaluated the possibilities of let-7 application in nerve repair. In this study, anti-let-7a was identified as the most suitable let-7 family molecule by analyses of endogenous expression and regulatory relationship, and functional screening. Let-7a antagomir demonstrated biosafety based on the results of in vivo safety assessments and it entered into the main cell types of the sciatic nerve, including Schwann cells, fibroblasts and macrophages. Use of hydrogel effectively achieved controlled, localized, and sustained delivery of let-7a antagomir. Finally, let-7a antagomir was integrated into chitosan conduit to construct a chitosan-hydrogel scaffold tissue-engineered nerve graft, which promoted nerve regeneration and functional recovery in a rat model of sciatic nerve transection. Our study provides an experimental basis for potential in vivo application of let-7a.
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- 2023
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9. A high-k Cu-doped ZnO film formed via Ga-ion implantation: The acceptor-donor co-doping approach
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Shi, Ying-Li, Huang, Dong, Kentsch, Ulrich, Zhou, Sheng-Qiang, and Ling, Francis Chi-Chung
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- 2022
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10. Robust temporal changes of cellular senescence and proliferation after sciatic nerve injury
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Yin-Ying Shen, Rui-Rui Zhang, Qian-Yan Liu, Shi-Ying Li, and Sheng Yi
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bioinformatic analysis ,cellular senescence ,dorsal root ganglia ,p16 ,peripheral nerve regeneration ,peripheral nerve trauma ,proliferation ,rat sciatic nerves ,sciatic nerve crush ,β-galactosidase activities ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Cellular senescence and proliferation are essential for wound healing and tissue remodeling. However, senescence-proliferation cell fate after peripheral nerve injury has not been clearly revealed. Here, post-injury gene expression patterns in rat sciatic nerve stumps (SRP113121) and L4–5 dorsal root ganglia (SRP200823) obtained from the National Center for Biotechnology Information were analyzed to decipher cellular senescence and proliferation-associated genetic changes. We first constructed a rat sciatic nerve crush model. Then, β-galactosidase activities were determined to indicate the existence of cellular senescence in the injured sciatic nerve. Ki67 and EdU immunostaining was performed to indicate cellular proliferation in the injured sciatic nerve. Both cellular senescence and proliferation were less vigorous in the dorsal root ganglia than in sciatic nerve stumps. These results reveal the dynamic changes of injury-induced cellular senescence and proliferation from both genetic and morphological aspects, and thus extend our understanding of the biological processes following peripheral nerve injury. The study was approved by the Animal Ethics Committee of Nantong University, China (approval No. 20190226-001) on February 26, 2019.
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- 2022
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11. Intravitreally injected ranibizumab versus photodynamic therapy for CNV secondary to choroidal osteoma: a 7-year follow-up case report
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Li-Yuan Rong, Li Ran, Shi-Ying Li, Xiao-Hong Meng, Yan-Ling Long, and Hai-Wei Xu
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Ophthalmology ,RE1-994 - Published
- 2021
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12. Precise Synthesis of Organic Cocrystal Alloys with Full‐Spectrum Emission Characteristics for the Stepless Color Changing Display.
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Yang, Jing, Ma, Ying‐Xin, Zong, Yi, Sun, Mao, Wang, Yun, Zhang, Ren‐Long, Feng, Jin, Wang, Chuan‐Zeng, Zhuo, Shu‐Ping, Zhou, Jin, Shi, Ying‐Li, Chen, Shu‐Hai, Wang, Xue‐Dong, and Lin, Hong‐Tao
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- 2024
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13. Effect and Mechanism of Resveratrol on Neurovascular Units in Rats with Acute Cerebral Ischemia
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Jin-Xia Zhang, Zhi-Yong Zhang, Shi-Ying Li, and Bin Liu
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Drug Discovery ,Pharmaceutical Science ,Molecular Medicine - Abstract
Abstract: The current study aimed to investigate the protective effect of resveratrol (RSV) on neurovascular units (NVUs) in rats induced by acute cerebral ischemia. RSV could reduce the damage to I/R rats, and the optimal concentration was 40 mg/kg/d. RSV may improve the permeability of the BBB and the destruction of its ultrastructure by upregulating ZO-1, claudin-5, and occludin to reduce the degree of brain edema after IR. Many structures in the NVUs were also damaged after I/R. RSV was found to have a protective effect on NeuN, GFAP, and LN in the NVUs. With the extension of RSV administration time, the protective effect became more significant. This protective effect may be related to the upregulation of NeuN and LN and the inhibition of the expression of GFAP. RSV could reduce neuronal apoptosis by upregulating XIAP and downregulating Smac and caspase-9. The inhibition of RSV on the increase in glial cells may be related to the inhibition of connexin 43 protein expression. RSV could inhibit the content of inflammatory factors IL-1β, IL-6, and TNF-α in the brain tissue of IR rats. RSV has a protective effect on the NVUs-induced injury, which may be related to the regulation of apoptosis and inflammatory signal pathway.
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- 2023
14. Precise Synthesis of Organic Cocrystal Alloys with Full‐Spectrum Emission Characteristics for the Stepless Color Changing Display
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Yang, Jing, primary, Ma, Ying‐Xin, additional, Zong, Yi, additional, Sun, Mao, additional, Wang, Yun, additional, Zhang, Ren‐Long, additional, Feng, Jin, additional, Wang, Chuan‐Zeng, additional, Zhuo, Shu‐Ping, additional, Zhou, Jin, additional, Shi, Ying‐Li, additional, Chen, Shu‐Hai, additional, Wang, Xue‐Dong, additional, and Lin, Hong‐Tao, additional
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- 2023
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15. Biological characteristics of dynamic expression of nerve regeneration related growth factors in dorsal root ganglia after peripheral nerve injury
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Yin-Ying Shen, Xiao-Kun Gu, Rui-Rui Zhang, Tian-Mei Qian, Shi-Ying Li, and Sheng Yi
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axon growth ,bioinformatic analysis ,dorsal root ganglia ,growth factors ,ingenuity pathway analysis ,nerve regeneration ,peripheral nerve injury ,rat sciatic nerve crush injury ,transcriptome sequencing ,upstream regulators ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
The regenerative capacity of peripheral nerves is limited after nerve injury. A number of growth factors modulate many cellular behaviors, such as proliferation and migration, and may contribute to nerve repair and regeneration. Our previous study observed the dynamic changes of genes in L4–6 dorsal root ganglion after rat sciatic nerve crush using transcriptome sequencing. Our current study focused on upstream growth factors and found that a total of 19 upstream growth factors were dysregulated in dorsal root ganglions at 3, 9 hours, 1, 4, or 7 days after nerve crush, compared with the 0 hour control. Thirty-six rat models of sciatic nerve crush injury were prepared as described previously. Then, they were divided into six groups to measure the expression changes of representative genes at 0, 3, 9 hours, 1, 4 or 7 days post crush. Our current study measured the expression levels of representative upstream growth factors, including nerve growth factor, brain-derived neurotrophic factor, fibroblast growth factor 2 and amphiregulin genes, and explored critical signaling pathways and biological process through bioinformatic analysis. Our data revealed that many of these dysregulated upstream growth factors, including nerve growth factor, brain-derived neurotrophic factor, fibroblast growth factor 2 and amphiregulin, participated in tissue remodeling and axon growth-related biological processes Therefore, the experiment described the expression pattern of upstream growth factors in the dorsal root ganglia after peripheral nerve injury. Bioinformatic analysis revealed growth factors that may promote repair and regeneration of damaged peripheral nerves. All animal surgery procedures were performed in accordance with Institutional Animal Care Guidelines of Nantong University and ethically approved by the Administration Committee of Experimental Animals, China (approval No. 20170302-017) on March 2, 2017.
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- 2020
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16. Quantitative Expression of RNA from Frozen Organs and Formaldehyde-fixed and Paraffin-embedded Tissues#br#
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Lü Ye-hui, LI Shi-ying, LI Zhi-hong,et al
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forensic pathology ,ribonucleic acid ,paraffin embedding ,freeze preservation ,reverse transcription-polymerase chain reaction ,ribonucleic acid integrity number ,Medicine - Abstract
Objective Quantitative analysis and comparison of the expression of ribonucleic acid (RNA) from frozen organs and formaldehyde-fixed and paraffin-embedded (FFPE) tissues. Methods Frozen specimens of human brain, myocardium and liver tissues as well as FFPE samples at different postmortem intervals were collected and mass concentration of RNA was extracted and detected. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) technology was used to analyze the amplification efficiency and relative expression of each RNA marker. Results The mass concentration and integrity of RNA extracted from FFPE samples were relatively low compared with frozen specimens. The amplification efficiency of RNA markers was related with RNA species and the length of amplification products. Among them, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and β-actin (ACTB) with relatively long amplification products failed to achieve optimal amplification efficiency, whereas 5S ribosomal RNA (5S rRNA) achieved ideal amplification efficiency and showed quite stable expression across various tissues, therefore it was chosen as internal reference marker. The expression quantity of GAPDH and ACTB in frozen specimens with longer postmortem intervals and in FFPE samples with relatively long amplification products was decreased. The expressions of tissue-specific microRNAs (miRNAs), GAPDH and ACTB with relatively short amplification products had consistency in the same tissues and FFPE samples. Conclusion Through standardizing the RT-qPCR experiment, selecting the appropriate RNA marker and designing primers of appropriate product length, RNA expression levels of FFPE samples can be accurately quantified
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- 2019
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17. Carotenoids and Vitamin A in Breastmilk of Hong Kong Lactating Mothers and Their Relationships with Maternal Diet
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Zhou Lu, Yat-Tin Chan, Kenneth Ka-Hei Lo, Danyue Zhao, Vincy Wing-Si Wong, Yuk-Fan Ng, Wing-Wa Ho, Liz Sin Li, Hang-Wai Lee, Man-Sau Wong, and Shi-Ying Li
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carotenoids ,vitamin A ,breastmilk ,maternal diets ,dietary intakes ,lactation ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Carotenoids and vitamin A are nutrients crucial to infants’ development. To date, there is limited data on their availability in breastmilk and the associated dietary factors, especially in Hong Kong, where people follow a westernized Chinese diet. This study determined the selected breastmilk’s carotenoid and vitamin A (retinol) contents by ultraperformance liquid chromatography with photodiode detection (UPLC-PDA) and the dietary intakes by three-day food records in 87 Hong Kong lactating mothers, who were grouped into tertiles based on their daily carotenoid intake. Low vitamin A intake (530.2 ± 34.2 µg RAE/day) and breastmilk retinol level (1013.4 ± 36.8 nmol/L) were reported in our participants, suggesting a poor vitamin A status of the lactating participants having relatively higher socioeconomic status in Hong Kong. Mothers in the highest tertile (T3) had higher breastmilk carotenoid levels than those in the lowest (T1) (p < 0.05). There were significant associations between maternal carotenoid intakes and breastmilk lutein levels in the linear regression models (p < 0.05) regardless of dietary supplement intake. Furthermore, maternal dark green vegetable intakes were associated with breastmilk retinol, lutein, and β-carotene levels. These findings can serve as dietary references for lactating mothers to enhance breastmilk carotenoid and vitamin A contents for the benefits of child growth and development.
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- 2022
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18. A self-delivery photodynamic sensitizer for enhanced DNA damage by PARP inhibition
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Ren-Jiang Kong, Xin-Yu Li, Jia-Qi Huang, Xiang Zhou, Fu-An Deng, Yan-Mei Li, Ling-Shan Liu, Shi-Ying Li, and Hong Cheng
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Biomedical Engineering ,General Materials Science - Abstract
Tumor cells activate DNA repair pathways to combat the oxidative damage induced by reactive oxygen species (ROS), contributing to their resistance to photodynamic therapy (PDT). Herein, a self-delivery photodynamic sensitizer is developed to enhance oxidative damage by blocking the DNA repair pathway through poly(ADP-ribose) polymerase (PARP) inhibition. Specifically, the photodynamic sensitizer (CeOla) is constructed based on the self-assembly of the photosensitizer chlorine e6 (Ce6) and the PARP inhibitor olaparib (Ola). Of note is that carrier free CeOla has a high drug content and favorable water stability, which could be effectively internalized by tumor cells for robust PDT upon light irradiation. Moreover, CeOla could inhibit the activation of PARP, promote the upregulation of γ-H2AX and reduce the expression of Rad51, thereby blocking the DNA repair pathway to sensitize tumor cells for PDT. As a consequence, the self-delivery CeOla greatly promotes the tumor cell apoptosis and shows a high antitumor performance with low side effects. It serves as a novel platform for the development of self-delivery nanomedicine to overcome oxidative resistance in tumor treatment.
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- 2023
19. Photodynamic Therapy Initiated Ferrotherapy of Self-Delivery Nanomedicine to Amplify Lipid Peroxidation via GPX4 Inactivation
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Lin-Ping Zhao, Shao-Yi Chen, Rong-Rong Zheng, Xiao-Na Rao, Ren-Jiang Kong, Chu-Yu Huang, Yi-Bin Liu, Youzhi Tang, Hong Cheng, and Shi-Ying Li
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Nanomedicine ,Photochemotherapy ,General Materials Science ,Lipid Peroxidation - Abstract
Lipid peroxide (LPO) is the hallmark of ferroptosis, which is a promising antitumor modality for its unique advantages. However, a cellular defense system would weaken the antitumor efficacy of ferrotherapy. Herein, a GPX4 inhibitor of ML162 and a photosensitizer of chlorine e6 (Ce6) are used to prepare the self-delivery nanomedicine (C-ML162) through hydrophobic and electrostatic interactions to enhance ferroptosis by photodynamic therapy (PDT). Specifically, carrier-free C-ML162 improves the solubility, stability, and cellular uptake of antitumor agents. Upon light irradiation, the internalized C-ML162 generates large amounts of reactive oxygen species (ROS) to oxidize cellular unsaturated lipid into LPO. More importantly, C-ML162 can directly inactivate GPX4 to enhance the accumulation of toxic LPO, inducing ferroptotic cell death. Additionally, C-ML162 is capable of accumulating at a tumor site for effective treatment. This self-delivery system to amplify lipid peroxidation via GPX4 inactivation for PDT initiated ferrotherapy might provide an appealing strategy against malignancies.
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- 2022
20. Fish oil supplementation and repeated macular hemorrhage without choroidal neovascularization: A case report
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Shi-Ying Li, Kaoru Fujinami, Sheila G Crewther, Yan-Ling Long, Hong-Xuan Lie, and Zheng-Qin Yin
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Medicine (General) ,R5-920 - Abstract
Macular hemorrhage can occur spontaneously and repeatedly without choroidal neovascularization or other known lesions associated with myopia. We report a case of repeated myopic macular hemorrhage following fish oil supplementation. A 32-year-old male was referred with newly acquired paracentral scotoma in the left eye. Serial retinal imaging, including fundus photography, fluorescein angiography, and spectral-domain optical coherence tomography were performed. Fundus photography and fluorescein angiography showed a subtle red-colored lesion nasal to the fovea. Optical coherence tomography showed a dome shaped elevation in the ellipsoid zone and interdigitation zone in the left eye. No known ocular risk factors for macular hemorrhage, such as choroidal neovascularization, lacquer cracks, Fuch’s spot or choroid thinning or keratoconus were observed. After 2 months without any treatment, the left eye lesion disappeared. However 2 weeks later, another newly developed red-colored lesion close to the left fovea was observed. At that moment, the detailed medical history revealed that the patient had been regularly taking a high dose of commercially available fish oil supplement beginning one month before the first macular hemorrhage. After discontinuation of the fish oil, the second left hemorrhage resolved gradually over the following 8 weeks. No recurrent hemorrhages have been detected at the 12 months follow-up visits. Our observations suggest that the relative value of nutritional supplementation with high doses of fish oil should be cautioned in patients with repetitive retinal hemorrhage.
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- 2020
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21. A Theranostic Nanoprobe for Hypoxia Imaging and Photodynamic Tumor Therapy
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Jing Hao Fan, Gui Ling Fan, Ping Yuan, Fu An Deng, Ling Shan Liu, Xiang Zhou, Xi Yong Yu, Hong Cheng, and Shi Ying Li
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hypoxia ,photodynamic therapy ,FRET ,nanoprobe ,theranostic ,Chemistry ,QD1-999 - Abstract
Hypoxia is a common feature for most malignant tumors, which was also closely related to the oxygen-dependent photodynamic therapy. Based on Förster resonance energy transfer (FRET), a smart nanoprobe (designated as H-Probe) was designed in this paper for hypoxia imaging and photodynamic tumor therapy. Due to the FRET process, H-Probe could respond to hypoxia with a significant fluorescence recovery. Moreover, abundant in vitro investigations demonstrated that the photosensitizer of PpIX in H-Probe could generate large amounts of singlet oxygen to kill cancer cells in the presence of oxygen and light with appropriate wavelength. Also, intravenously injected H-Probe with light irradiation achieved an effective tumor inhibition in vivo with a reduced side effect. This original strategy of integrating hypoxia imaging and tumor therapy in one nanoplatform would promote the development of theranostic nanoplatform for tumor precision therapy.
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- 2019
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22. Berberine inhibits tumour growth in vivo and in vitro through suppressing the lincROR-Wnt/β-catenin regulatory axis in colorectal cancer
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Shi-Ying, Li, Chuan-Jian, Shi, Wei-Ming, Fu, and Jin-Fang, Zhang
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Pharmacology ,Pharmaceutical Science - Abstract
Background Berberine, a non-prescription medicine clinically applied for diarrhoea and gastroenteritis. Recent studies have demonstrated that it possesses anti-tumour properties in colorectal cancer, but the exact molecular mechanism remains obscure. Objectives To elucidate the underly molecular mechanisms of berberine in colorectal cancer from a perspective of epigenetics, and tried to explore the role of lincROR-Wnt/β-catenin molecular axis in the berberine induced the anti-tumour activity in colorectal cancer. Methods The effects of berberine on cell growth, cell cycle and apoptosis were examined in CRC cells. The in vivo effect of berberine on tumour growth was investigated using a xenograft mice model. Moreover, lincROR and Wnt/β-catenin signalling were detected by luciferase activity, qRT-PCR and western blotting assays. Key findings Berberine suppressed cell growth in vitro via inducing cell cycle arrest and apoptosis in CRC cell, and inhibited tumourigenesis in vivo. LincROR was significantly down-regulated by berberine, inducing the inactivation of the canonical Wnt/β-catenin signalling, meanwhile, the overexpression of lincROR partially reversed the suppressive effects on tumour growth and Wnt/β-catenin signalling induced by berberine. Conclusions Berberine inhibits tumour growth partially via regulating the lincROR-Wnt/β-catenin regulatory axis, which provides a strategy for the design of anti-tumour drugs for CRC patients after our advanced validation.
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- 2022
23. A tunable planar acoustic waveguide based on non-uniform period thermal fields.
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Zhou, Xiao-Liang, Yang, Shuai, Li, Jin-Rong, Bian, Zu-Guang, and Shi, Ying-Li
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ACOUSTIC waveguides ,WAVEGUIDES ,SHAPE memory polymers ,ELASTIC waves ,PHONONIC crystals ,METALLIC films ,THEORY of wave motion ,ELASTIC wave propagation ,PLANAR waveguides - Abstract
Elastic wave metamaterials, such as phononic crystals (PnCs) always composed of several materials in terms of periodical structures, possess unique acoustic characteristic which can exhibit outstanding performance in forbidding wave propagation with some specific frequencies. In this paper, due to the thermal sensitivity of the thermally induced shape memory polymers (SMP) and period thermal fields, a tunable planar acoustic metamaterial which is constituent homogeneous is proposed and designed to realize the function of waveguides. A thin plate model composed of homogenous thermally induced SMP and adhered with a series of metallic films at the top boundary which plays the role of local heating sources is established. The homogenous plate can be transferred into acoustic metamaterial once the non-uniform period thermal fields are imported. Based on the Fourier law of heat conduction and finite element method (FEM), a two-dimensional numerical model via COMSOL Multiphysics is carried out to perform the in-plane mode band structures and transmission spectra. The results show that the bandgap will be effectively opened and change obviously as the injected heat flux increases. Furthermore, band structures of 7 × 1 supercell with thermal defect are performed to reveal the design guideline of waveguides which is supposed to be the basis of line-type and L-type waveguides. The tunable characteristics of waveguides based on thermal fields with thermal defects are also discussed. These results may pave a new avenue for the design of tunable acoustic metamaterial composed of thermal sensitive material which own a prospect to be applied in area of acoustic waveguides. [ABSTRACT FROM AUTHOR]
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- 2023
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24. How Do Spatial Forms Influence Psychophysical Drivers in a Campus City Community Life Circle?
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Hong, Shi-Ying Li, Zhu Chen, Lian-Huan Guo, Fangbing Hu, Yi-Jun Huang, Dan-Cheng Wu, Zhigang Wu, and Xin-Chen
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urban public facilities ,equal time circle ,physical environment ,community life circles - Abstract
The physical environment of urban public facilities is an important driver for public health and work efficiency. Unfortunately, citizens are exposed to negative physical environments because of inappropriate spatial forms in urban growth boundaries. This study aims to explore psychophysical drivers and their spatial distribution in campus city community life circles during the COVID-19 pandemic. Questionnaires and measuring equipment were used to gather psychophysical information in a 15 min campus city community life circle in Fuzhou, China. To this end, acoustic, light and thermal environments were used to map spatial distributions. We then explored relationships between spatial form and psychophysical parameters. The study results show that the distance to road (DTR), green area ratio (GR) and street width (SW) are all potential spatial drivers for psychophysical information. Furthermore, the acoustical, light and thermal environments provide interactions for the public understanding of the environment. These findings contribute to the understanding and evaluation of psychophysical drivers, spurring regional industry in community life circles and contributing to developing suitable plans and industrial distribution in urban areas.
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- 2023
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25. Coordination‐Driven Self‐Assembly of Biomedicine to Enhance Photodynamic Therapy by Inhibiting Proteasome and Bcl‐2
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Rui‐Xin Wang, Rong‐Rong Zheng, Hua Cai, Ni Yang, Zu‐Xiao Chen, Lin‐Ping Zhao, Yue‐Kang Huang, Peng‐Fei Li, Hong Cheng, A‐Li Chen, Shi‐Ying Li, and Lin Xu
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Biomaterials ,Biomedical Engineering ,Pharmaceutical Science - Published
- 2023
26. Paraptosis Inducer to Effectively Trigger Immunogenic Cell Death for Metastatic Tumor Immunotherapy with IDO Inhibition
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Rong-Rong Zheng, Lin-Ping Zhao, Chu-Yu Huang, Hong Cheng, Ni Yang, Zu-Xiao Chen, Hua Cai, Wei Zhang, Ren-Jiang Kong, and Shi-Ying Li
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General Engineering ,General Physics and Astronomy ,General Materials Science - Published
- 2023
27. Discrimination Experiences of Orphans and Left-Behind Children in China as Predictors of Suicidal Thoughts and Behaviors
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Hui-Bing Guo and Shi-Ying Li
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Psychiatry and Mental health - Abstract
Abstract: Background: Suicide has been recognized as a serious problem in orphans and left-behind children. It is important to examine the differences in the factors affecting suicidal thoughts and behaviors between the two groups. Aims: To compare the lifetime rates of suicidal thoughts and behaviors between orphans, left-behind children, and other children, and to assess the impact of discrimination experiences and the mediating role of self-esteem. Methods: A total of 2,413 children from middle schools in China completed standardized anonymous questionnaires that assessed child type, suicidal thoughts and behaviors, discrimination experiences, and self-esteem. Data analysis employed χ2 test, Pearson correlation test, and structural equation modeling (SEM). Results: Left-behind children had a significantly higher lifetime rates of suicidal ideation than orphans and other children (χ2 = 9.35, p < .05). Discrimination experiences significantly and positively predicted suicidal thoughts and behaviors through the mediating effect of self-esteem in orphaned children, and there was no self-esteem mediating effect found for left-behind children. Discrimination experiences had a greater impact on suicidal thoughts and behaviors for orphans than for left-behind children. Limitations: Cross-sectional studies based on self-report might lead to biased results and mean that causality cannot be inferred. Conclusions: Attention should be paid to suicidal thoughts and behaviors among vulnerable groups, especially left-behind children. Reducing discrimination and improving orphans’ self-esteem can be considered as targets of prevention and intervention for suicidal thoughts and behaviors.
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- 2023
28. Crossing Reduction of Sankey Diagram with Barycentre Ordering via Markov Chain.
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He Chen Li, Shi Ying Li, Bowen Tan, and Shuai Cheng Li
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- 2019
29. Long-term safety of human retinal progenitor cell transplantation in retinitis pigmentosa patients
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Yong Liu, Shao Jun Chen, Shi Ying Li, Ling Hui Qu, Xiao Hong Meng, Yi Wang, Hai Wei Xu, Zhi Qing Liang, and Zheng Qin Yin
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Progenitor cell ,Visual improvement ,Retinitis pigmentosa ,Cell transplantation ,Retina ,Medicine (General) ,R5-920 ,Biochemistry ,QD415-436 - Abstract
Abstract Background Retinitis pigmentosa is a common genetic disease that causes retinal degeneration and blindness for which there is currently no curable treatment available. Vision preservation was observed in retinitis pigmentosa animal models after retinal stem cell transplantation. However, long-term safety studies and visual assessment have not been thoroughly tested in retinitis pigmentosa patients. Methods In our pre-clinical study, purified human fetal-derived retinal progenitor cells (RPCs) were transplanted into the diseased retina of Royal College of Surgeons (RCS) rats, a model of retinal degeneration. Based on these results, we conducted a phase I clinical trial to establish the safety and tolerability of transplantation of RPCs in eight patients with advanced retinitis pigmentosa. Patients were studied for 24 months. Results After RPC transplantation in RCS rats, we observed moderate recovery of vision and maintenance of the outer nuclear layer thickness. Most importantly, we did not find tumor formation or immune rejection. In the retinis pigmentosa patients given RPC injections, we also did not observe immunological rejection or tumorigenesis when immunosuppressive agents were not administered. We observed a significant improvement in visual acuity (P
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- 2017
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30. Ce6- and Bez235-Based Nanomedicine for Chemo-/Photodynamic Combination Therapy of Tumors
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Fu-An Deng, Yi-Bin Liu, Rong-Rong Zheng, Ren-Jiang Kong, Xiang Zhou, Jia-Jia Wang, Hong Cheng, and Shi-Ying Li
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General Materials Science - Published
- 2022
31. A Tunable Planar Acoustic Waveguide Based on Non-Uniform Period Thermal Fields
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Zhou, Xiao-Liang, primary, Yang, Shuai, additional, Li, Jin-Rong, additional, Bian, Zu-guang, additional, and Shi, Ying-Li, additional
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- 2023
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32. Construction of organic micro/nanocrystal lasers: from molecules to devices
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Shi, Ying-Li, primary, Ding, Ling-Yi, additional, Hu, Yun, additional, Lv, Qiang, additional, Yang, Wang-Ying, additional, and Wang, Xue-Dong, additional
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- 2023
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33. Predictors for New Native-Vessel Occlusion in Patients with Prior Coronary Bypass Surgery: A Single-Center Retrospective Research
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Ze Zheng, Zi chao Cheng, Shao ping Wang, Shi ying Li, Jian Wang, Hong yu Peng, Zheng Wu, Wen zheng Li, Yun Lv, Jia yu Tian, Shu juan Cheng, and Jing hua Liu
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Objectives. Chronic total occlusion (CTO) is prevalent in patients with prior coronary artery bypass grafting (CABG). However, data available concerning the prevalence of new-onset CTO of native vessels in patients with prior CABG is limited. Therefore, the objective of the study is to determine predictors for new native-vessel occlusion in patients with prior coronary bypass surgery. Methods. 354 patients with prior CABG receiving follow-up angiography are selected and analyzed in the present study, with clinical and angiographic variables being analyzed by logistic regression to determine the predictors of new native-vessel occlusion. Results. The overall new occlusion rate was 35.59%, with multiple CTOs (42.06%) being the most prevalent (LAD 24.60% and RCA 18.25%, respectively). Additionally, current smoking (OR: 2.67; 95% CI: 2.60 to 2.74; p=0.01), reduced ejection fraction (OR: 1.76; 95% CI: 1.04 to 2.97; p=0.04), severe stenosis (OR: 3.65; 95% CI: 2.55 to 5.24; p=0.01), and diabetes mellitus (OR: 1.86; 95% CI: 1.34 to 2.97; p=0.04) serve as the independent predictors for new native-vessel occlusion. Conclusion. As to high incidence of postoperative CTO, appropriate revascularization strategies and postoperative management should be taken into careful consideration.
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- 2019
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34. Self‐Delivery O 2 ‐Ecomonizer to Reverse Antiapoptosis of Hypoxic Tumor for Enhanced Photodynamic Therapy
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Yan‐Mei Li, Xiang Zhou, Xin‐Yu Li, Jia‐Qi Huang, Zi‐Wen Qiu, Ren‐Jiang Kong, Ni Yan, Shi‐Ying Li, and Hong Cheng
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Pharmacology ,Biochemistry (medical) ,Pharmaceutical Science ,Medicine (miscellaneous) ,Pharmacology (medical) ,Genetics (clinical) - Published
- 2023
35. Role of traditional Chinese medicine in the initiative practice for health
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Yun, Li, Shi-Ying, Li, and Yi, Zhong
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General Medicine - Abstract
To achieve awareness of the initiative practice for health concept in the Chinese population, traditional Chinese medicine (TCM) doctors should popularize TCM culture and knowledge among young people, people with a low level of education, in low-income populations, and in rural populations.
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- 2022
36. A carrier free photodynamic oxidizer for enhanced tumor therapy by redox homeostasis disruption
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Ni Yang, Rong-Rong Zheng, Zi-Ying Chen, Rui-Xin Wang, Lin-Ping Zhao, Xia-Yun Chen, Lei Chen, Lin Xu, Shi-Ying Li, and A-Li Chen
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Photosensitizing Agents ,Photochemotherapy ,Cell Line, Tumor ,Biomedical Engineering ,Homeostasis ,Nanoparticles ,General Materials Science ,Reactive Oxygen Species ,Oxidation-Reduction - Abstract
Abnormal tumor microenvironments play important roles in cancer progression. In general, tumor cells are capable of upregulating glutathione (GSH) levels to maintain aberrant redox homeostasis and cause resistance to oxidative damage. Herein, we develop a photodynamic oxidizer to disrupt the redox homeostasis of tumor cells for enhanced photodynamic tumor therapy. Based on pyropheophorbide-a (Pyro) and naphthazarin (Nap), a carrier free photodynamic oxidizer (named PyroNap) is prepared by the self-assembly technique through hydrophobic interactions. It is confirmed that nanosized PyroNap has high drug contents as well as favorable dispersity and stability. Besides, the photodynamic property of Pyro has obviously improved after self-assembly into the nanomedicine of PyroNap, which facilitates the production of reactive oxygen species (ROS) for robust photodynamic therapy (PDT). More importantly, the Nap induced GSH decrease could disrupt the redox homeostasis of tumor cells to further improve the PDT efficacy on tumor suppression. Consequently, after intravenous administration, PyroNap was able to significantly inhibit tumor growth and cause minimal side effects. This study might shed light on developing translational nanomedicine for tumor precision therapy.
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- 2022
37. Ocular Characteristics of Patients with Leber Congenital Amaurosis 6 Caused by Pathogenic RPGRIP1 Gene Variation in a Chinese Cohort
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Liu Bo, Qingling Cao, Xiaohong Meng, Yijian Li, Yanling Long, Yumei Mao, Sha Li, Gang Wang, and Shi-Ying Li
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Sanger sequencing ,medicine.medical_specialty ,Visual acuity ,Article Subject ,genetic structures ,medicine.diagnostic_test ,business.industry ,Fundus photography ,Nystagmus ,RE1-994 ,Fundus (eye) ,eye diseases ,Ophthalmology ,symbols.namesake ,Genotype ,symbols ,Medicine ,sense organs ,medicine.symptom ,business ,Erg ,Electroretinography - Abstract
Purpose. To delineate the clinical and genetic characteristics of Chinese patients with RPGRIP1-associated Leber congenital amaurosis 6 (LCA6). Methods. After screening 352 unrelated families with clinically diagnosed RP, five LCA6 patients with RPGRIP1 variations from unrelated Chinese families were identified. Full ophthalmology examinations, including decimal best-corrected visual acuity (BCVA), fundus photography, fundus autofluorescence imaging, spectral-domain optical coherence tomography (SD-OCT), full-field electroretinography (ffERG), multifocal electroretinography (mfERG), perimetry, and flash visual evoked potential (FVEP), were performed. Target next-generation sequencing (NGS) and Sanger sequencing were performed for the five patients to identify and to validate candidate disease-causing variants. Results. Five patients were molecularly diagnosed as the LCA6 associated with RPGRIP1 variation, with typical clinical characteristics including congenital night blindness, nystagmus, and visual defect, at an early age. Interestingly, LCA6 exhibited extensive clinical heterogeneity and the changes in the morphology and function were not completely consistent in the five LCA6 patients. Case 1 showed extensive inferior-nasal retinal atrophy with a corresponding area of hypofluorescence in fundus autofluorescence, and the fundus photograph was nearly normal in cases 2 and 3. The ERG results displayed a moderately reduced rod-system response in cases 1 and 2 and a significant reduced rod-system response in case 3. Both case 4 and case 5 showed mottled pigmentation in fundi and an unrecordable rod and cone-system response in ERG. Moreover, we identified eight compound variants and one homozygous variant in the five patients with RPGRIP1. Conclusions. This is the largest report focused on the clinical electrophysiological features of patients with associated LCA6 caused by the variation in the RPGRIP1 gene in the Chinese population with an enriched phenotypic and genotypic background of LCA6 to improve future gene therapies.
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- 2021
38. Potential application of let-7a antagomir in injured peripheral nerve regeneration
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Shi-Ying Li, Qian-Qian Chen, Qian-Yan Liu, Pan Wang, Tian-Mei Qian, Xing-Hui Wang, and Sheng Yi
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Developmental Neuroscience - Abstract
Neurotrophic factors, particularly nerve growth factor, enhance neuronal regeneration. However, the in vivo applications of nerve growth factor are largely limited by its intrinsic disadvantages, such as its short biological half-life, its contribution to pain response, and its inability to cross the blood-brain barrier. Considering that let-7 (human miRNA) targets and regulates nerve growth factor, and that let-7 is a core regulator in peripheral nerve regeneration, we evaluated the possibilities of let-7 application in nerve repair. In this study, anti-let-7a was identified as the most suitable let-7 family molecule by analyses of endogenous expression and regulatory relationship, and functional screening. Let-7a antagomir demonstrated biosafety based on the results of in vivo safety assessments and it entered into the main cell types of the sciatic nerve, including Schwann cells, fibroblasts and macrophages. Use of hydrogel effectively achieved controlled, localized, and sustained delivery of let-7a antagomir. Finally, let-7a antagomir was integrated into chitosan conduit to construct a chitosan-hydrogel scaffold tissue-engineered nerve graft, which promoted nerve regeneration and functional recovery in a rat model of sciatic nerve transection. Our study provides an experimental basis for potential in vivo application of let-7a.
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- 2022
39. Metal-coordinated nanomedicine for combined tumor therapy by inducing paraptosis and apoptosis
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Yi-Bin Liu, Xiayun Chen, Xian‐Tong Chen, Rong-Rong Zheng, Xi-Yong Yu, Hong Cheng, Chang Wang, Ling-Shan Liu, Shi-Ying Li, and Lin-Ping Zhao
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0303 health sciences ,Programmed cell death ,Chemistry ,Endoplasmic reticulum ,Pharmaceutical Science ,Apoptosis ,Combination chemotherapy ,02 engineering and technology ,Mitochondrion ,Endoplasmic Reticulum ,021001 nanoscience & nanotechnology ,Paraptosis ,03 medical and health sciences ,Nanomedicine ,Vacuolization ,Doxorubicin ,Cell Line, Tumor ,medicine ,Cancer research ,0210 nano-technology ,030304 developmental biology ,medicine.drug - Abstract
Apoptosis resistance of tumor cells often results in chemoresistance and treatment failure in clinic. In this work, a Cu2+-coordinated morusin/doxorubicin biological organizer (designated as COMBO) is designed to combat cellular resistance to apoptosis for combined tumor therapy. By virtue of the coordination and π-π stacking effects, the self-assembled COMBO possesses nanometer particle size, narrow and homogenous graininess distribution as well as a good dispersion stability. Moreover, COMBO could be disassembled by glutathione (GSH) with an effective drug release and fluorescence recovery. Morusin-mediated paraptosis could induce extensive vacuolization through the dilation of endoplasmic reticulum (ER) and mitochondria, leading to non-apoptotic programmed cell death (PCD) regardless of the cellular resistance to apoptosis. Furthermore, the released doxorubicin prefers to locate in cell nucleus to cause cell apoptosis for combined chemotherapy. By the joint action of paraptosis and apoptosis, COMBO exhibits a great superiority over monotherapy in tumor inhibition with a low system toxicity. This study may open a window in the development of self-delivery nanomedicine for overcoming apoptosis resistance in tumor therapy.
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- 2021
40. Comparison of different diagnostic contact lens disinfection methods used in ophthalmic department in Chinese hospitals
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Xiao-Lei Wang, Yan Wu, Li-Feng Chen, Shi-Ying Li, Wei Bian, and Yan-Qi Zhang
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hospital infection ,chloramphenicol ,dichloroisocyanurate ,pseudomonas aeruginosa ,staphylococcus aureus ,staphylococcus epidermidis ,Ophthalmology ,RE1-994 - Abstract
AIM:To assess the disinfection methods of diagnostic contact lens and their efficacy in ophthalmology in China.METHODS: Ten Chinese hospitals were surveyed and indicated three commonly used disinfectants 0.05% sodium dichloroisocyanurate(NaDCC), 75% EtOH, or chloramphenicol eye drops(Minims®: 0.5%). Lenses were infected with staphylococcus aureus, staphylococcus epidermidis, or pseudomonas aeruginosa, and then disinfected by; 1)wiping; 2)immersing in disinfectant for 5min; 3)immersing in disinfectant for 10min; n=9. Swab wipes from the lenses were cultured for 24h and colony-forming units were counted to assess bacterial load. Lens clarity was subjectively scored for each method.RESULTS: The bacterial load was 1×108/mL ×50μL/lense equals 5×106/lense. Of the three methods the use of 75% EtOH and NaDCC are significantly more effective when used for wiping compared to eye drops(P≤0.01). Wiping with NaDCC or EtOH significantly reduced bacterial load but results were variable and the threat of cross-infection is still present. They were effective if used for 10min, but EtOH adversely affected lens clarity in contrast to NaDCC which had no adverse affects on the lens. Chloramphenicol eye drops were ineffective.CONCLUSION: NaDCC immersion for 10min or longer appears to be a simple and effective way to disinfect diagnostic contact lenses during ophthalmic examination.
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- 2015
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41. Self-delivery biomedicine for enhanced photodynamic therapy by feedback promotion of tumor autophagy
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Shao-Yi Chen, Lin-Ping Zhao, Zu-Xiao Chen, Chu-Yu Huang, Ren-Jiang Kong, Yu-Qing Wang, Da-Wei Zhang, Shi-Ying Li, Hui-Hui Ti, and Hong Cheng
- Subjects
Biomaterials ,Biomedical Engineering ,General Medicine ,Molecular Biology ,Biochemistry ,Biotechnology - Abstract
Reactive oxygen species (ROS) generated during photodynamic therapy (PDT) can induce autophagy to protect tumor cell from PDT-induced apoptosis. In this work, a self-delivery autophagy regulator (designated as CeCe) is developed for autophagy promotion sensitized PDT against tumor. Briefly, CeCe is prepared by the assembly of a photosensitizer of chlorin e6 (Ce6) and autophagy promoter of celastrol. By virtue of intermolecular interactions, Ce6 and celastrol are able to self-assemble into nanomedicine with great photodynamic performance and autophagy regulation capacity. Under light irradiation, CeCe would produce ROS in tumor cells to amplify the oxidative stress and promote cell autophagy. As a result, CeCe exhibits an enhanced photo toxicity by inducing autophagic cell death. In vivo experiments indicate that CeCe can predominantly accumulate in tumor tissue for a robust PDT. Moreover, CeCe has a superior therapeutic efficiency compared to monotherapy and combined treatment of Ce6 and celastrol, suggesting a synergistic antitumor effect of PDT and autophagy promotion. This self-delivery nanomedicine may advance the development of the co-delivery nanoplatform to improve the antitumor efficacy of PDT by promoting autophagy. STATEMENT OF SIGNIFICANCE: Autophagy is a "double-edged sword" in cellular homeostasis and metabolism, which can promote tumor progression but also induce an unknown impact on tumor inhibition. In this work, a self-delivery autophagy regulator (designated as CeCe) was developed for autophagy promotion sensitized photodynamic therapy (PDT). By virtue of intermolecular interactions, Ce6 and celastrol were found to self-assemble into stable CeCe without drug excipients, which exhibited great photodynamic performance and autophagy regulation capacity. In vitro and in vivo findings demonstrated a superior tumor suppression ability of CeCe over the monotherapy as well as the combined treatment of Ce6 and celastrol, suggesting a synergistic antitumor efficacy by PDT and autophagy promotion.
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- 2022
42. Design and Growth of Branched Organic Crystals: Recent Advances and Future Applications
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Shi, Ying‐Li, primary, Lv, Qiang, additional, Tao, Yi‐Chen, additional, Ma, Ying‐Xin, additional, and Wang, Xue‐Dong, additional
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- 2022
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43. Effect and mechanism of resveratrol on neurovascular units in rats with acute cerebral ischemia
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Jin-Xia, Zhang, primary, Zhi-Yong, Zhang, additional, shi-ying, Li, additional, and bin, Liu, additional
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- 2022
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44. Intravitreally injected ranibizumab versus photodynamic therapy for CNV secondary to choroidal osteoma: a 7-year follow-up case report
- Author
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Yanling Long, Li-Yuan Rong, Li Ran, Xiaohong Meng, Haiwei Xu, and Shi-Ying Li
- Subjects
medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Photodynamic therapy ,Choroidal osteoma ,RE1-994 ,Letter To The Editor ,Ophthalmology ,Text mining ,medicine ,Ranibizumab ,business ,medicine.drug - Published
- 2021
45. One-step green method to prepare progressive burning gun propellant through gradient denitration strategy.
- Author
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Shi-ying Li, Yu Li, Ya-jun Ding, Hao Liang, and Zhong-liang Xiao
- Subjects
PROPELLANTS ,FIREARMS ,STABILITY (Mechanics) ,ORGANIC solvents ,ENERGY density - Abstract
Gradiently denitrated gun propellant (GDGP) prepared by a "gradient denitration" strategy is obviously superior in progressive burning performance to the traditional deterred gun propellant. Currently, the preparation of GDGP employed a tedious two-step method involving organic solvents, which hinders the large-scale preparation of GDGP. In this paper, GDGP was successfully prepared via a novelty and environmentally friendly one-step method. The obtained samples were characterized by FT-IR, Raman, SEM and XPS. The results showed that the content of nitrate groups gradiently increased from the surface to the core in the surface layer of GDGP and the surface layer of GDGP exhibited a higher compaction than that of raw gun propellant, with a well-preserved nitrocellulose structure. The denitration process enabled the propellant surface with regressive energy density and good progressive burning performance, as confirmed by oxygen bomb and closed bomb test. At the same time, the effects of different solvents on the component loss of propellant were compared. The result showed that water caused the least component loss. Finally, the stability of GDGP was confirmed by methyl-violet test. This work not only provided environmentally friendly, simple and economic preparation of GDGP, but also confirmed the stability of GDGP prepared by this method. [ABSTRACT FROM AUTHOR]
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- 2023
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46. Overexpression of TRIM44 mediates the NF-kB pathway to promote OC progression and metastasis
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Yang Yu, Shi ying Li, Liang-Zhen Xie, Ying Guo, Jia Li, Ying Shen, Yang Fu, and Feng-Juan Han
- Abstract
Background: TRIM44 is highly expressed in both ovarian cancer tissues and cells, and is significantly associated with clinicopathological factors and poor prognosis. However, its effect on the malignant biological behavior of ovarian cancer cells and its potential mechanism of action have not been revealed. Therefore, we aimed to investigate the role and potential mechanism of TRIM44 on ovarian cancer.Methods: Using shRNA transfection to overexpress TRIM44, we investigated the effects of TRIM44 overexpression on the proliferation, migration, invasion and apoptosis of ovarian cancer cells and the growth ability of xenograft tumors through in vivo xenograft mouse models and in vitro experiments. In addition, to further elucidate its molecular mechanisms of action affecting ovarian cancer progression and metastasis.Results: TRIM44 overexpression significantly promoted the proliferation, migration, and invasion of SKOV3 cells and inhibited apoptosis in vitro while promoting tumor growth in vivo. Mechanistic studies have shown that TRIM44 overexpression contributes to ovarian cancer cells invasion, metastasis, and anti-apoptosis by upregulating the levels of inflammatory cytokines (TNF-α, IL-1β, IL-8) in the tumor microenvironment, stimulating the secretion of IKKβ factors, further promoting IKBα degradation and phosphorylation, initiating NF-kB p65 entry into the nucleus, and activating the NF-kB signaling pathway to upregulate or downregulate the expression of Metallo-matrix protease (MMP-9), and apoptotic genes (Bcl-2, Caspase-3).Conclusions: These data suggest that TRIM44 overexpression promotes ovarian cancer progression and metastasis by promoting NF-kB signaling pathway activation. These results provide evidence for TRIM44 as an oncogene in ovarian cancer and suggest that it may be a potential target for ovarian cancer therapy.
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- 2022
47. Self-delivery nanomedicine for chemotherapy sensitized photodynamic therapy
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Xiang Zhou, Rong-Rong Zheng, Shi-Ying Li, Ren-Jiang Kong, Hong Cheng, Chang Wang, Ling-Shan Liu, Jia-Qi Huang, Yan-Mei Li, and A-Li Chen
- Subjects
Curcumin ,Porphyrins ,Thioredoxin-Disulfide Reductase ,Cell Survival ,medicine.medical_treatment ,Transplantation, Heterologous ,Photodynamic therapy ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Catalysis ,Cell Line ,Mice ,chemistry.chemical_compound ,Neoplasms ,Tumor Microenvironment ,polycyclic compounds ,Materials Chemistry ,Animals ,Humans ,Medicine ,Self delivery ,Tumor microenvironment ,Chemotherapy ,Microscopy, Confocal ,Photosensitizing Agents ,Chlorophyllides ,business.industry ,Metals and Alloys ,Chlorine e6 ,General Chemistry ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Transplantation ,Nanomedicine ,Photochemotherapy ,chemistry ,Ceramics and Composites ,Cancer research ,Reactive Oxygen Species ,0210 nano-technology ,business - Abstract
A chlorine e6 (Ce6) and curcumin (Cur) based self-delivery nanomedicine (CeCu) is prepared for chemotherapy sensitized photodynamic therapy (PDT). The chemotherapeutic agent of Cur could inhibit the TrxR activity to destroy the cellular ROS-defence system for enhanced PDT, which provides synergistic effects for tumor precision therapy in consideration of the unfavorable tumor microenvironments.
- Published
- 2021
48. A porphysome-based photodynamic O2 economizer for hypoxic tumor treatment by inhibiting mitochondrial respiration
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Rong-Rong Zheng, Lin-Ping Zhao, Xiayun Chen, Ni Yang, Chang Wang, Hong Cheng, Xi-Yong Yu, Shi-Ying Li, A-Li Chen, and Runtian Guan
- Subjects
Hypoxic tumor ,medicine.medical_treatment ,Metals and Alloys ,High loading ,Photodynamic therapy ,General Chemistry ,Pharmacology ,Hypoxia (medical) ,Porphyrin ,Mitochondrial respiration ,Catalysis ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,chemistry.chemical_compound ,chemistry ,Materials Chemistry ,Ceramics and Composites ,medicine ,medicine.symptom ,Atovaquone ,medicine.drug - Abstract
A porphysome-based photodynamic O2 economizer (P-PAT) is prepared for hypoxic tumor therapy. The self-assembled porphyrin bilayers of P-PAT possess high loading capacity to atovaquone (ATO) (nearly 70%), which could restrain mitochondrial respiration to relieve hypoxia and enhance photodynamic therapy.
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- 2021
49. Photoluminescence intensity of Cu-doped ZnO modulated via defect occupancy by applying electric bias
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Ho, Lok-Ping, primary, Younas, Muhammad, additional, Borgersen, Jon, additional, Khan, Rao Tahir Ali, additional, Rezvani, Seyed Javad, additional, Pollastri, Simone, additional, Akhtar, Muhammad Javed, additional, Nadeem, Muhammad, additional, Huang, Dong, additional, Shi, Ying-Li, additional, Kuznetsov, Andrej, additional, and Ling, Francis Chi-Chung, additional
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- 2022
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50. Correlation between small polaron tunneling relaxation and donor ionization in Ga2O3
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Shi, Ying-Li, primary, Huang, Dong, additional, Ling, Francis Chi-Chung, additional, Tian, Qi-Sheng, additional, Liao, Liang-Sheng, additional, Phillips, Matthew R., additional, and Ton-That, Cuong, additional
- Published
- 2022
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