29 results on '"Xixia Zhang"'
Search Results
2. Identification of markers for predicting prognosis and endocrine metabolism in nasopharyngeal carcinoma by miRNA–mRNA network mining and machine learning
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Xixia Zhang, Xiao Li, Caixia Wang, Shuang Wang, Yuan Zhuang, Bing Liu, and Xin Lian
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nasopharyngeal cancer ,micro RNAs ,miRNA-mRNA network ,immunotherapy ,immune checkpoint blockade ,risk model ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
BackgroundNasopharyngeal cancer (NPC) has a high incidence in Southern China and Asia, and its survival is extremely poor in advanced patients. MiRNAs play critical roles in regulating gene expression and serve as therapeutic targets in cancer. This study sought to disclose key miRNAs and target genes responsible for NPC prognosis and endocrine metabolism.Materials and methodsThree datasets (GSE32960, GSE70970, and GSE102349) of NPC samples came from Gene Expression Omnibus (GEO). Limma and WGCNA were applied to identify key prognostic miRNAs. There were 12 types of miRNA tools implemented to study potential target genes (mRNAs) of miRNAs. Univariate Cox regression and stepAIC were introduced to construct risk models. Pearson analysis was conducted to analyze the correlation between endocrine metabolism and RiskScore. Single-sample gene set enrichment analysis (ssGSEA), MCP-counter, and ESTIMATE were performed for immune analysis. The response to immunotherapy was predicted by TIDE and SubMap analyses.ResultsTwo key miRNAs (miR-142-3p and miR-93) were closely involved in NPC prognosis. The expression of the two miRNAs was dysregulated in NPC cell lines. A total of 125 potential target genes of the key miRNAs were screened, and they were enriched in autophagy and mitophagy pathways. Five target genes (E2F1, KCNJ8, SUCO, HECTD1, and KIF23) were identified to construct a prognostic model, which was used to divide patients into high group and low group. RiskScore was negatively correlated with most endocrine-related genes and pathways. The low-risk group manifested higher immune infiltration, anticancer response, more activated immune-related pathways, and higher response to immunotherapy than the high-risk group.ConclusionsThis study revealed two key miRNAs that were highly contributable to NPC prognosis. We delineated the specific links between key miRNAs and prognostic mRNAs with miRNA–mRNA networks. The effectiveness of the five-gene model in predicting NPC prognosis as well as endocrine metabolism provided a guidance for personalized immunotherapy in NPC patients.
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- 2023
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3. TET2 suppresses nasopharyngeal carcinoma progression by inhibiting glycolysis metabolism
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Xixia Zhang, Jing Yang, Dong Shi, and Zhiwei Cao
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Nasopharyngeal carcinoma ,Ten-eleven translocation protein 2 ,Pyruvate kinase, muscle ,Glycolysis ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 ,Cytology ,QH573-671 - Abstract
Abstract Background Nasopharyngeal carcinoma (NPC) is a common malignant tumor. Ten-eleven translocation (TET) protein 2 (TET2), an evolutionarily conserved dioxygenases, is reported to be involved in various malignant tumor developments. Here, we aim to investigate the effect of TET2 on NPC progress in vitro and in vivo, and its detailed underlying mechanism. Methods Real-time PCR and western blotting were used to determine the expression levels of TET1/2/3 in NPC cell lines. The effects of TET2 on NPC progression were evaluated using CCK8 and invasion assays in vitro. Proteins interacted with TET2 in NPC cells were detected by immunoprecipitation and mass spectrometry. The effects of TET2 or pyruvate kinase, muscle (PKM) on glycolysis in NPC cells were examined by detecting glucose uptake and lactate production. The effects of TET2 on NPC progression were evaluated using xenograft tumor model in vivo. Results TET2 expression was decreased in NPC cells, and TET2 overexpression inhibited proliferation and invasion of NPC cells, which is independent on TET2’s catalytic activity. In mechanism, TET2 N-terminal domain interacts with PKM in cytoplasm to prevent PKM dimers from translocating into nucleus, suppressing glycolysis in NPC cells, thereby inhibiting proliferation and invasion of NPC cells. Moreover, using xenograft tumor model, we found that TET2 knockout promoted NPC progression and decreased survival rate. However, administration with the inhibitor of PKM, shikonin, decreased the tumor volume of TET2-cas9 group, and increased the survival rate. Conclusion TET2 suppresses NPC development through interacting with PKM to inhibit glycolysis.
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- 2020
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4. GNAS promotes inflammation-related hepatocellular carcinoma progression by promoting STAT3 activation
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Hongda Ding, Xixia Zhang, Yang Su, Changjun Jia, and Chaoliu Dai
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Hepatocellular carcinoma ,Lipopolysaccharides ,G-protein alpha-subunit ,Signal transducer and activator of transcription 3 ,Interleukin-6 ,Cytology ,QH573-671 - Abstract
Abstract Background Hepatocellular carcinoma (HCC) is still the most common cause of cancer-related mortality worldwide and accumulating studies report that HCC is frequently linked to chronic inflammation. G-protein alpha-subunit (GNAS)-activating mutations have recently been reported to form a rare subgroup of inflammatory liver tumors. In this study, we investigated the roles of GNAS in inflammation-related HCC progression and its underlying mechanism. Methods Lipopolysaccharides (LPS) and diethylnitrosamine were employed to stimulate HCC cells to an induced inflammatory response. qRT-PCR, immunohistochemistry and immunoblotting were performed to detect the expression of GNAS in HCC tissues and cell lines. Expression levels of proinflammatory cytokines were detected by qRT-PCR and ELISA. N6-methyladenosine (m6A) methylation of GNAS mRNA was detected by RNA-binding protein immunoprecipitation (RIP). Transcription factors activation profiling plate array was performed to investigate the underlying mechanism in GNAS promoting interleukin-6 (IL-6) expression in HCC cells. HCC cell invasion was determined by transwell assay in vitro, and tumorigenesis was assessed with a subcutaneous xenograft mouse model of HCC. Results We found that LPS stimulation promotes GNAS expression in HCC cells through increasing m6A methylation of GNAS mRNA. The high expression level of GNAS promotes LPS-induced HCC cell growth and invasion by interacting with signal transducer and activator of transcription 3 (STAT3). Furthermore, GNAS knockdown inhibits LPS induced-IL-6 expression in HCC cells by suppressing STAT3 activation. Moreover, we found that GNAS promotes LPS-induced STAT3 activation in HCC cells through inhibiting long non-coding RNA TPTEP1 interacting with STAT3. In addition, GNAS expression promotes HCC development in mice and is related to poor survival. Conclusions Our findings for the first time indicate a tumor-promoting role of GNAS in inflammation-related HCC progression and provide a novel potential target for HCC therapy.
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- 2020
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5. Role of Non-coding RNAs on the Radiotherapy Sensitivity and Resistance of Head and Neck Cancer: From Basic Research to Clinical Application
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Xixia Zhang and Jing Yang
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head and neck cancer ,radiotherapy ,non-coding RNA ,miRNA ,long non-coding RNA ,circRNA ,Biology (General) ,QH301-705.5 - Abstract
Head and neck cancers (HNCs) rank as the sixth common and the seventh leading cause of cancer-related death worldwide, with an estimated incidence of 600,000 cases and 40–50% mortality rate every year. Radiotherapy is a common local therapeutic modality for HNC mainly through the function of ionizing radiation, with approximately 60% of patients treated with radiotherapy or chemoradiotherapy. Although radiotherapy is more advanced and widely used in clinical practice, the 5-year overall survival rates of locally advanced HNCs are still less than 40%. HNC cell resistance to radiotherapy remains one of the major challenges to improve the overall survival in HNC patients. Non-coding RNAs (ncRNAs) are newly discovered functional small RNA molecules that are different from messenger RNAs, which can be translated into a protein. Many previous studies have reported the dysregulation and function of ncRNAs in HNC. Importantly, researchers reported that several ncRNAs were also dysregulated in radiotherapy-sensitive or radiotherapy-resistant HNC tissues compared with the normal cancer tissues. They found that ectopically elevating or knocking down expression of some ncRNAs could significantly influence the response of HNC cancer cells to radiotherapy, indicating that ncRNAs could regulate the sensitivity of cancer cells to radiotherapy. The implying mechanism for ncRNAs in regulating radiotherapy sensitivity may be due to its roles on affecting DNA damage sensation, inducing cell cycle arrest, regulating DNA damage repair, modulating cell apoptosis, etc. Additionally, clinical studies reported that in situ ncRNA expression in HNC tissues may predict the response of radiotherapy, and circulating ncRNA from body liquid serves as minimally invasive therapy-responsive and prognostic biomarkers in HNC. In this review, we aimed to summarize the current function and mechanism of ncRNAs in regulating the sensitivity of HNC cancer cells to radiotherapy and comprehensively described the state of the art on the role of ncRNAs in the prognosis prediction, therapy monitoring, and prediction of response to radiotherapy in HNC.
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- 2021
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6. Long noncoding RNA DANCR promotes nasopharyngeal carcinoma progression by interacting with STAT3, enhancing IL-6/JAK1/STAT3 signaling
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Xixia Zhang, Jing Yang, Zhigang Bian, Dong Shi, and Zhiwei Cao
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Nasopharyngeal carcinoma ,Differentiation antagonizing nonprotein coding RNA ,Interleukin-6 ,Signal transducer and activator of transcription 3 ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Nasopharyngeal carcinoma (NPC) is the most common type of malignancy of the neck and head in Southeast Asia and North Africa. Long noncoding RNA (LncRNA) Differentiation antagonizing nonprotein coding RNA (DANCR) has been reported to exert oncogenic functions in various malignant tumors. However, whether DANCR is involved in NPC tumorgenesis and its underlying mechanisms are still unknown. In the current study, we investigated the expression and biological functions of DANCR in NPC cells and found that DANCR is highly expressed in NPC cells and IL-6 stimulation upregulates DANCR expression through an STAT3-dependent manner. Besides, DANCR knockdown attenuates IL-6-induced proliferation and invasion of NPC cells. Furthermore, DANCR specifically interacts with STAT3 to promote STAT3 activation in NPC cells. Moreover, DANCR knockdown evidently decreases IL-6 induced the association between STAT3 and JAK1 in NPC cells. In addition, we also found that DANCR also indirectly binds to JAK1 through interacting with STAT3 under IL-6 stimulation in NPC cells. Taken together, the present study for the first time demonstrates that DANCR, acting as an oncogene in NPC, promotes NPC progression by interacting with STAT3 and enhancing JAK1 binding to STAT3 to strengthen IL-6/JAK1/STAT3 signaling, suggesting that it may be a potential target to be used as a novel strategy to develop NPC therapeutics.
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- 2019
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7. Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review
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Xixia Zhang, Sin Yong Teng, Adrian Chun Minh Loy, Bing Shen How, Wei Dong Leong, and Xutang Tao
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transition metal dichalcogenide (TMDCs) nanomaterials ,layered materials ,nanocatalysis ,gas cleaning ,catalysis ,pollution reduction ,Chemistry ,QD1-999 - Abstract
The material characteristics and properties of transition metal dichalcogenide (TMDCs) have gained research interest in various fields, such as electronics, catalytic, and energy storage. In particular, many researchers have been focusing on the applications of TMDCs in dealing with environmental pollution. TMDCs provide a unique opportunity to develop higher-value applications related to environmental matters. This work highlights the applications of TMDCs contributing to pollution reduction in (i) gas sensing technology, (ii) gas adsorption and removal, (iii) wastewater treatment, (iv) fuel cleaning, and (v) carbon dioxide valorization and conversion. Overall, the applications of TMDCs have successfully demonstrated the advantages of contributing to environmental conversation due to their special properties. The challenges and bottlenecks of implementing TMDCs in the actual industry are also highlighted. More efforts need to be devoted to overcoming the hurdles to maximize the potential of TMDCs implementation in the industry.
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- 2020
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8. Traditional Chinese Medicine nursing by regulating Liver for patients with hyperthyroidism
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Xixia ZHANG, Zhentao AN, and Bei WANG
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- 2022
9. Elucidation of single atom catalysts for energy and sustainable chemical production: Synthesis, characterization and frontier science
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Adrian Chun Minh Loy, Sin Yong Teng, Bing Shen How, Xixia Zhang, Kin Wai Cheah, Valeria Butera, Wei Dong Leong, Bridgid Lai Fui Chin, Chung Loong Yiin, Martin J. Taylor, and Georgios Kyriakou
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Fuel Technology ,General Chemical Engineering ,Energy Engineering and Power Technology - Published
- 2023
10. TET2 suppresses nasopharyngeal carcinoma progression by inhibiting glycolysis metabolism
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Dong Shi, Xixia Zhang, Zhiwei Cao, and Jing Yang
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Cancer Research ,Immunoprecipitation ,Pyruvate kinase, muscle ,lcsh:RC254-282 ,03 medical and health sciences ,0302 clinical medicine ,In vivo ,Genetics ,medicine ,otorhinolaryngologic diseases ,Nasopharyngeal carcinoma ,Glycolysis ,lcsh:QH573-671 ,030304 developmental biology ,0303 health sciences ,Chemistry ,lcsh:Cytology ,medicine.disease ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,Ten-eleven translocation protein 2 ,In vitro ,Blot ,stomatognathic diseases ,Oncology ,Cell culture ,030220 oncology & carcinogenesis ,Cancer research ,Primary Research ,Pyruvate kinase - Abstract
Background Nasopharyngeal carcinoma (NPC) is a common malignant tumor. Ten-eleven translocation (TET) protein 2 (TET2), an evolutionarily conserved dioxygenases, is reported to be involved in various malignant tumor developments. Here, we aim to investigate the effect of TET2 on NPC progress in vitro and in vivo, and its detailed underlying mechanism. Methods Real-time PCR and western blotting were used to determine the expression levels of TET1/2/3 in NPC cell lines. The effects of TET2 on NPC progression were evaluated using CCK8 and invasion assays in vitro. Proteins interacted with TET2 in NPC cells were detected by immunoprecipitation and mass spectrometry. The effects of TET2 or pyruvate kinase, muscle (PKM) on glycolysis in NPC cells were examined by detecting glucose uptake and lactate production. The effects of TET2 on NPC progression were evaluated using xenograft tumor model in vivo. Results TET2 expression was decreased in NPC cells, and TET2 overexpression inhibited proliferation and invasion of NPC cells, which is independent on TET2’s catalytic activity. In mechanism, TET2 N-terminal domain interacts with PKM in cytoplasm to prevent PKM dimers from translocating into nucleus, suppressing glycolysis in NPC cells, thereby inhibiting proliferation and invasion of NPC cells. Moreover, using xenograft tumor model, we found that TET2 knockout promoted NPC progression and decreased survival rate. However, administration with the inhibitor of PKM, shikonin, decreased the tumor volume of TET2-cas9 group, and increased the survival rate. Conclusion TET2 suppresses NPC development through interacting with PKM to inhibit glycolysis.
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- 2020
11. Unravelling the effect of sulfur vacancies on the electronic structure of the MoS2 crystal
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Xutang Tao, Xinru Li, Jia-Chi Lan, Shanpeng Wang, Jie Qiao, Xixia Zhang, Cheng-Maw Cheng, and Chao-Kuei Lee
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Materials science ,Condensed matter physics ,Photoemission spectroscopy ,business.industry ,General Physics and Astronomy ,chemistry.chemical_element ,Angle-resolved photoemission spectroscopy ,02 engineering and technology ,Electronic structure ,021001 nanoscience & nanotechnology ,01 natural sciences ,Sulfur ,Crystal ,chemistry.chemical_compound ,Semiconductor ,chemistry ,0103 physical sciences ,Density functional theory ,Physical and Theoretical Chemistry ,010306 general physics ,0210 nano-technology ,business ,Molybdenum disulfide - Abstract
Molybdenum disulfide (MoS2) is one of the two-dimensional layered semiconductor transition metal dichalcogenides (TMDCs) with great potential in electronics, optoelectronics, and spintronic devices. Sulfur vacancies in MoS2 are the most prevalent defects. However, the effect of sulfur vacancies on the electronic structure of MoS2 is still in dispute. Here we experimentally and theoretically investigated the effect of sulfur vacancies in MoS2. The vacancies were intentionally introduced by thermal annealing of MoS2 crystals in a vacuum environment. Angle-resolved photoemission spectroscopy (ARPES) was used directly to observe the electronic structure of the MoS2 single crystals. The experimental result distinctly revealed the appearance of an occupied defect state just above the valence band maximum (VBM) and an upward shift of the VBM after creating sulfur vacancies. In addition, density functional theory (DFT) calculations also confirmed the existence of the occupied defect state close to the VBM as well as two deep unoccupied states induced by the sulfur vacancies. Our results provide evidence to contradict that sulfur vacancies indicate the origin of n-type behaviour in MoS2. This work provides a rational strategy for tuning the electronic structures of MoS2.
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- 2020
12. Microalgae-derived nanoporous biochar for ammonia removal in sustainable wastewater treatment
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Xixia Zhang, Jaroslav Kaštyl, Mariano Casas-Luna, Lubomír Havlíček, Marek Vondra, Vladimír Brummer, Kateřina Sukačová, Vítězslav Máša, Sin Yong Teng, and Petr Neugebauer
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Process Chemistry and Technology ,Chemical Engineering (miscellaneous) ,Pollution ,Waste Management and Disposal ,Analytical Chemistry - Abstract
Contains fulltext : 283896.pdf (Publisher’s version ) (Open Access)
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- 2022
13. Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review
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Wei Dong Leong, Sin Yong Teng, Xixia Zhang, Adrian Chun Minh Loy, Bing Shen How, and Xutang Tao
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Pollution ,catalysis ,General Chemical Engineering ,media_common.quotation_subject ,Environmental pollution ,Review ,transition metal dichalcogenide (TMDCs) nanomaterials ,nanocatalysis ,lcsh:Chemistry ,gas cleaning ,lcsh:QD1-999 ,layered materials ,emission control ,Environmental science ,pollution reduction ,General Materials Science ,Electronics ,Biochemical engineering ,media_common - Abstract
The material characteristics and properties of transition metal dichalcogenide (TMDCs) have gained research interest in various fields, such as electronics, catalytic, and energy storage. In particular, many researchers have been focusing on the applications of TMDCs in dealing with environmental pollution. TMDCs provide a unique opportunity to develop higher-value applications related to environmental matters. This work highlights the applications of TMDCs contributing to pollution reduction in (i) gas sensing technology, (ii) gas adsorption and removal, (iii) wastewater treatment, (iv) fuel cleaning, and (v) carbon dioxide valorization and conversion. Overall, the applications of TMDCs have successfully demonstrated the advantages of contributing to environmental conversation due to their special properties. The challenges and bottlenecks of implementing TMDCs in the actual industry are also highlighted. More efforts need to be devoted to overcoming the hurdles to maximize the potential of TMDCs implementation in the industry.
- Published
- 2020
14. Additional file 1 of GNAS promotes inflammation-related hepatocellular carcinoma progression by promoting STAT3 activation
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Hongda Ding, Xixia Zhang, Su, Yang, Changjun Jia, and Chaoliu Dai
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Additional file 1. Raw images from western blots.
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- 2020
- Full Text
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15. Optimized Growth of Large-Sized LiInSe2 Crystals and the Electric–Elastic Properties
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Qingming Lu, Qian Wu, Xutang Tao, Tongtong Yu, Chunlong Li, Zeliang Gao, Xixia Zhang, Shanpeng Wang, and Ning Jia
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Diffraction ,Electromechanical coupling coefficient ,Materials science ,business.industry ,Analytical chemistry ,02 engineering and technology ,General Chemistry ,Dielectric ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Piezoelectricity ,010309 optics ,Crystal ,Dipole ,Full width at half maximum ,Optics ,Quality (physics) ,0103 physical sciences ,General Materials Science ,0210 nano-technology ,business - Abstract
Single crystals of an environmental friendly material LiInSe2 (LISe) with dimensions up to Φ16 mm × 55 mm were grown successfully through a modified vertical Bridgman technique. The quality of the crystal was measured by a high resolution X-ray diffraction rocking curve, and a full width at half-maximum (fwhm) for a, b, and c faces are 47″, 46″, 36″, respectively. It indicates that the as-grown crystal is high quality. The complete sets of dielectric, elastic, and piezoelectric constants of LISe crystals at room temperature were obtained by the resonant technique and impedance analysis for the first time. The piezoelectric constants d24 and d33 reached −13.6 pC/N and 8.5 pC/N, respectively. The corresponding electromechanical coupling coefficient k33 is 21%. In addition, the structural distortions and dipole moments of LISe were analyzed in detail. Our results show that LISe is a promising candidate as an environmental friendly piezoelectric material.
- Published
- 2017
16. Flux growth and characterization of an FeSi4P4 single crystal
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Jian Zhang, Huapeng Ruan, Xutang Tao, Ning Jia, Chunlong Li, Shanpeng Wang, Tongtong Yu, and Xixia Zhang
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Diffraction ,Materials science ,business.industry ,General Chemical Engineering ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Crystal ,Full width at half maximum ,Crystallography ,Paramagnetism ,Thermal conductivity ,Semiconductor ,Hall effect ,0210 nano-technology ,business ,Single crystal - Abstract
Herein, a single crystal of FeSi4P4 (FSP) with dimensions up to 8 × 7 × 3 mm3 was successfully grown using a seeded flux growth method. Single crystal X-ray diffraction results revealed that the FSP crystal crystallized in the chiral space group P1 (no. 1). High-resolution X-ray diffraction presents a full-width at half-maximum (FWHM) of 36′′ and 46′′ for the (100) and (001) FSP crystals, respectively, which indicates that FSP crystals have high crystalline quality. FSP is thermally stable up to 1157.1 °C and has a high thermal conductivity of 35 W (m K)−1 at room temperature. The magnetic analysis shows that the FSP crystal is paramagnetic in the range from 5 to 300 K. The Hall effect measurement suggests that the FSP crystal is a promising p-type semiconductor at room temperature.
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- 2017
17. Controllable seeded flux growth and optoelectronic properties of bulk o-SiP crystals
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Xutang Tao, Chunlong Li, Shanpeng Wang, Tongtong Yu, Duo Liu, Xixia Zhang, Min Zhu, and Ning Jia
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Flux method ,Electron mobility ,Materials science ,Band gap ,business.industry ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Data_CODINGANDINFORMATIONTHEORY ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,0104 chemical sciences ,Crystal ,Flux growth ,Optoelectronics ,General Materials Science ,Seeding ,Orthorhombic crystal system ,0210 nano-technology ,business - Abstract
Two-dimensional (2D) materials have recently attracted great interest due to their promising optoelectronic applications. Orthorhombic SiP (o-SiP) is a 2D layered crystal and may have a significant impact on optoelectronic technologies. Large-sized bulk o-SiP single crystals have been successfully grown by a seeded flux method. The size and morphology of o-SiP crystals can be controlled by changing the growth conditions. The carrier mobility and band gap of o-SiP were characterized in detail. The photoresponse properties of o-SiP were investigated and a relatively fast response has been demonstrated. The experimental results indicate that o-SiP may be an excellent candidate for applications in electronics and optoelectronics.
- Published
- 2017
18. Long noncoding RNA DANCR promotes nasopharyngeal carcinoma progression by interacting with STAT3, enhancing IL-6/JAK1/STAT3 signaling
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Zhiwei Cao, Xixia Zhang, Zhigang Bian, Dong Shi, and Jing Yang
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0301 basic medicine ,STAT3 Transcription Factor ,Differentiation antagonizing nonprotein coding RNA ,Stimulation ,RM1-950 ,03 medical and health sciences ,0302 clinical medicine ,Cell Line, Tumor ,medicine ,otorhinolaryngologic diseases ,Humans ,Neoplasm Invasiveness ,Interleukin 6 ,STAT3 ,Cell Proliferation ,Pharmacology ,Gene knockdown ,Signal transducer and activator of transcription 3 ,Nasopharyngeal Carcinoma ,Oncogene ,biology ,Interleukin-6 ,RNA ,Nasopharyngeal Neoplasms ,General Medicine ,Janus Kinase 1 ,medicine.disease ,Long non-coding RNA ,stomatognathic diseases ,030104 developmental biology ,Nasopharyngeal carcinoma ,030220 oncology & carcinogenesis ,biology.protein ,Cancer research ,RNA, Long Noncoding ,Therapeutics. Pharmacology ,Signal Transduction - Abstract
Nasopharyngeal carcinoma (NPC) is the most common type of malignancy of the neck and head in Southeast Asia and North Africa. Long noncoding RNA (LncRNA) Differentiation antagonizing nonprotein coding RNA (DANCR) has been reported to exert oncogenic functions in various malignant tumors. However, whether DANCR is involved in NPC tumorgenesis and its underlying mechanisms are still unknown. In the current study, we investigated the expression and biological functions of DANCR in NPC cells and found that DANCR is highly expressed in NPC cells and IL-6 stimulation upregulates DANCR expression through an STAT3-dependent manner. Besides, DANCR knockdown attenuates IL-6-induced proliferation and invasion of NPC cells. Furthermore, DANCR specifically interacts with STAT3 to promote STAT3 activation in NPC cells. Moreover, DANCR knockdown evidently decreases IL-6 induced the association between STAT3 and JAK1 in NPC cells. In addition, we also found that DANCR also indirectly binds to JAK1 through interacting with STAT3 under IL-6 stimulation in NPC cells. Taken together, the present study for the first time demonstrates that DANCR, acting as an oncogene in NPC, promotes NPC progression by interacting with STAT3 and enhancing JAK1 binding to STAT3 to strengthen IL-6/JAK1/STAT3 signaling, suggesting that it may be a potential target to be used as a novel strategy to develop NPC therapeutics.
- Published
- 2018
19. Ultrasensitive and Broadband All‐Optically Controlled THz Modulator Based on MoTe 2 /Si van der Waals Heterostructure
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Shilei Wang, Shuqi Zhao, Jie Qiao, Shanpeng Wang, Ziming Wang, Chuan He, Xixia Zhang, Xutang Tao, and Xixi Xiong
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symbols.namesake ,Materials science ,business.industry ,Terahertz radiation ,Broadband ,symbols ,Optoelectronics ,Heterojunction ,van der Waals force ,business ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials - Published
- 2020
20. Bulk crystal growth and characterization of semi-organic nonlinear optical crystal tri-diethylammonium hexachlorobismuthate (TDCB)
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Jie Liu, Xutang Tao, Guangfeng Liu, Dongsheng Yuan, Yang Liu, Xiaoxin Zheng, Xixia Zhang, and Zeliang Gao
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Materials science ,business.industry ,Analytical chemistry ,Second-harmonic generation ,Bulk crystal growth ,General Chemistry ,Condensed Matter Physics ,Nonlinear optical crystal ,Cutoff frequency ,Thermal expansion ,Characterization (materials science) ,Crystal ,Optics ,Thermal ,General Materials Science ,business - Abstract
Bulk semi-organic nonlinear optical (NLO) single-crystals of tri-diethylammonium hexachlorobismuthate (TDCB) with sizes up to 22 × 21 × 15 mm3 have been grown from concentrated hydrochloric acid by the slow-cooling method. TDCB crystallizes in the trigonal system, the R3c space group, with a = 14.699(4) A and c = 19.102(5) A. Its morphology has been indexed to reveal the major facets of the crystal to be {110} and {012}. Transmittance spectra of TDCB show an optical transmission in the entire visible region with the cutoff wavelength at 365 nm. The powder second harmonic generation (SHG) measured by using the Kurtz and Perry technique indicates that TDCB is a phase-matchable NLO material with a SHG efficiency of 1.8 times that of KH2PO4 (KDP). Its specific heat and thermal expansion were investigated as a function of temperature, and the relationship between the structure and the thermal properties has been discussed. Furthermore, laser-induced damage threshold measurements show a threshold up to 2.32 GW cm−2. All the results demonstrate that the semi-organic crystal TDCB is promising in NLO applications.
- Published
- 2015
21. Flux method growth of bulk MoS2single crystals and their application as a saturable absorber
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Haibing Xia, Shanpeng Wang, Ning Jia, Chunlong Li, Fei Lou, Jingliang He, Xiang Zhang, Tongtong Yu, Xixia Zhang, Baitao Zhang, and Xutang Tao
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Flux method ,Materials science ,business.industry ,Saturable absorption ,Nanotechnology ,General Chemistry ,Condensed Matter Physics ,Exfoliation joint ,law.invention ,Crystal ,chemistry.chemical_compound ,chemistry ,Optical microscope ,law ,Optoelectronics ,General Materials Science ,Dislocation ,business ,Molybdenum disulfide ,Single crystal - Abstract
Molybdenum disulfide (MoS2) has attracted a great deal of attention because of its outstanding physical, chemical and optoelectronic properties. The method used to prepare large sized MoS2 crystals of very high quality is still an important issue for determining the feasibility of its application. Herein, we propose a novel Sn flux method to grow single crystal MoS2, and bulk MoS2 single crystals with a size of 3 mm × 5 mm were successfully obtained by using a cooling rate of 2–4 °C h−1. The growth mechanism of the MoS2 crystal in Sn flux was investigated in detail using optical microscopy and atomic force microscopy (AFM). The obvious screw dislocation steps that are revealed suggest that the growth of MoS2 is controlled by a screw-dislocation-driven (SDD) spiral growth mechanism. The flux-grown MoS2 crystals were exfoliated to produce high-quality large-scale films using the liquid-phase exfoliation method. Using ultrathin MoS2 films as a saturable absorber, a passively Q-switched laser at a wavelength of 1.06 μm was constructed and operated, with a narrow pulse width of 326 ns.
- Published
- 2015
22. Crystal Growth and Effects of Annealing on Optical and Electrical Properties of Mid-Infrared Single Crystal LiInS2
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Xixia Zhang, Qingming Lu, Zeliang Gao, Minglei Zhao, Xiang Zhang, Chunlong Li, Chunming Dong, Xutang Tao, and Shanpeng Wang
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Materials science ,Annealing (metallurgy) ,Mid infrared ,Analytical chemistry ,Crystal growth ,General Chemistry ,Condensed Matter Physics ,Laser ,Spectral line ,law.invention ,Atmosphere ,Crystal ,Crystallography ,law ,General Materials Science ,Single crystal - Abstract
Single crystal LiInS2 (LIS) is a promising candidate for mid-infrared (MIR) frequency conversion to obtain MIR laser output. Large-sized LIS crystals with a diameter of 16 mm and a length of 50 mm were grown by the modified Bridgman method. The as-grown LIS crystals were annealed in different atmospheres, and the effects of annealing on the electrical and optical properties were studied in detail. The visible-near-infrared and MIR transmission spectra of the crystals were studied before and after annealing in different atmospheres. The experimental results indicate that the optimal annealing conditions for a grown crystal are to use an atmosphere of LIS vapor at 700 °C for 160 h. The electrical properties were investigated before and after annealing in the LIS vapor atmosphere. After proper postgrowth annealing, the quality of the crystal was significantly improved, which resulted in an increase in the damage threshold from 0.9 to 1.2 J/cm2.
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- 2014
23. Modified Bridgman growth and properties of mid-infrared LiInSe2 crystal
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Chunlong Li, Qingming Lu, Xiang Zhang, Shanpeng Wang, Xutang Tao, Zeliang Gao, and Xixia Zhang
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Materials science ,business.industry ,Crystal growth ,Condensed Matter Physics ,Thermal diffusivity ,Inorganic Chemistry ,Crystal ,Optics ,Thermal conductivity ,Materials Chemistry ,Transmittance ,Melting point ,Optoelectronics ,Crystallite ,business ,Single crystal - Abstract
A mid-infrared LiInSe 2 (LISe) single crystal was successfully grown by the modified vertical Bridgman technique with dimensions of about ∅12 mm×30 mm. A large amount of high purity polycrystalline LISe used for crystal growth was synthesized in one run by a novel two-step synthesis method. The thermal properties of the crystal were carefully investigated by measuring the melting point, specific heat, and thermal diffusivity, and deriving the thermal conductivity. The transmission spectrum showed that the 50% transmittance level extends from 0.65 to 12.6 μm. The excellent thermal conductivity and optical properties indicate that LISe is one of only a few promising candidates for high average power nanosecond OPOs pumped by ~1 μm lasers.
- Published
- 2014
24. Modified Bridgman growth and characterization of a novel mid-infrared transparent optical crystal: LiGa3Te5
- Author
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Zeliang Gao, Chunlong Li, Guandong Liu, Xiang Zhang, Xixia Zhang, Chunming Dong, Qiong Shi, Shanpeng Wang, Xutang Tao, and Qingming Lu
- Subjects
Materials science ,business.industry ,Terahertz radiation ,General Chemical Engineering ,Mid infrared ,General Chemistry ,engineering.material ,Characterization (materials science) ,Crystal ,Thermal conductivity ,Optics ,Coating ,engineering ,Optoelectronics ,Crystal optics ,Bridgman growth ,business - Abstract
A large single LiGa3Te5 (LGT) crystal was grown with size up to O16 mm × 50 mm for the first time using a modified vertical Bridgman–Stockbarger method. LGT crystallizes in the non-centrosymmetric system, space group R32, with a = b = 14.343(7) A, c = 17.617 A, Z = 12, and V = 3139 A3. A detailed description of the polyhedral connections in the LGT structure is presented. The X-ray rocking curve, specific heat and thermal conductivity are also investigated. The room-temperature transmission of the as-grown LGT without any coating is above the 40% level from 3.5 to 18 μm. The cut-off edges at short and long wavelength are 0.9 and 25 μm, respectively. Owing to its wide transparency range, LGT is a promising candidate for MIR and far-infrared NLO applications, and even for THz transmission and generation.
- Published
- 2014
25. Characteristics of metal–ferroelectric–insulator–semiconductor structure using a Nd-doped Bi4Ti3O12 ferroelectric layer
- Author
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Ch.H. Yang, Jianru Han, Y. G. Yang, Zh. Wang, Xixia Zhang, Fuyi Jiang, and Jifan Hu
- Subjects
Permittivity ,Materials science ,Condensed matter physics ,Annealing (metallurgy) ,Doping ,Mineralogy ,Dielectric ,Condensed Matter Physics ,Ferroelectricity ,Inorganic Chemistry ,Materials Chemistry ,Dielectric loss ,Thin film ,Current density - Abstract
The metal–ferroelectric–insulator–semiconductor (MFIS) structure has been fabricated using Bi 3.54 Nd 0.46 Ti 3 O 12 (BNdT) as a ferroelectric layer. The BNdT films can crystallize well at 700°C for 1 h. The J – V curve shows the MFIS structure has a good insulating property. C – V hysteresis loops at various sweeping speed were collected as were polarization types. The leakage current density, dielectric constant and dielectric loss were found to be dependent on the annealing temperature. The dielectric constant and dielectric loss at a frequency of 100 kHz are 98 and 0.092, respectively.
- Published
- 2004
26. Optimized Growth of Large-Sized LiInSe2 Crystals and the Electric-Elastic Properties.
- Author
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Ning Jia, Shanpeng Wang, Zeliang Gao, Qian Wu, Chunlong Li, Xixia Zhang, TongTong Yu, Qingming Lu, and Xutang Tao
- Published
- 2017
- Full Text
- View/download PDF
27. Candidate gene expression affects intramuscular fat content and fatty acid composition in pigs
- Author
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Bangquan Jin, Wei Wang, Xiao-Feng Xu, Fei Ma, Wen-Da Xue, and Xixia Zhang
- Subjects
Male ,medicine.medical_specialty ,Candidate gene ,Meat ,Sus scrofa ,Gene Expression ,Biology ,Real-Time Polymerase Chain Reaction ,Internal medicine ,Gene expression ,Genetics ,medicine ,Animals ,RNA, Messenger ,Muscle, Skeletal ,chemistry.chemical_classification ,Sex Characteristics ,Fatty Acids ,food and beverages ,Fatty acid ,General Medicine ,Endocrinology ,chemistry ,Adipose Tissue ,Saturated fatty acid ,Body Composition ,lipids (amino acids, peptides, and proteins) ,Female ,Intramuscular fat ,Fatty acid composition ,Phosphoenolpyruvate carboxykinase ,Polyunsaturated fatty acid - Abstract
The objective of this study was to correlate the expression pattern of candidate genes with the intramuscular fat (IMF) content and fatty acid composition of the Longissimus dorsi muscle of Duroc × Shanzhu commercial crossbred pigs. Animals of both sexes were slaughtered at a body weight of about 90 kg. The IMF content and fatty acid composition of the Longissimus dorsi muscle were measured and correlated with candidate genes mRNA expression (AdPLA, ADRB3, LEPR, MC4R, PPARγ, PPARα, LPL, PEPCK, and SCD). Females presented higher IMF content (p < 0.05) than males. The total saturated fatty acid (SFA) in males was greater (p < 0.01), whereas the total monounsaturated fatty acid (MUFA) (p < 0.01) and polyunsaturated fatty acid (PUFA) (p < 0.05) were lower than in females. The expressions of AdPLA, MC4R, PEPCK, and SCD correlated with the IMF content (p < 0.05). AdPLA showed a positive association with MUFA and a negative association with SFA (p < 0.05). LEPR and MC4R were both positively and significantly associated with C18:3 and C20:0 (p < 0.05). PPARα and PPARγ were negatively correlated with SFA, and PPARγ was positively associated with MUFA (p < 0.05). LPL was positively associated with MUFA and negatively associated with SFA (p < 0.05). PEPCK was negatively correlated with PUFA (p < 0.05). SCD was positively associated with MUFA (p < 0.05). The revealed correlations may confirm that these candidate genes are important for fat deposition and fatty acid composition in pigs, and the evaluation and use of these genes may be useful for improving porcine meat quality.
- Published
- 2012
28. Crystal Growth and Effects of Annealing on Opticaland Electrical Properties of Mid-Infrared Single Crystal LiInS2.
- Author
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Shanpeng Wang, Zeliang Gao, Xiang Zhang, Xixia Zhang, Chunlong Li, Chunming Dong, Qingming Lu, Minglei Zhao, and Xutang Tao
- Published
- 2014
- Full Text
- View/download PDF
29. Modified Bridgman growth and properties of mid-infrared LiInSe2 crystal.
- Author
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Shanpeng Wang, Xixia Zhang, Xiang Zhang, Chunlong Li, Zeliang Gao, Qingming Lu, and Xutang Tao
- Subjects
- *
CRYSTAL growth , *LITHIUM compounds , *SINGLE crystals , *THERMAL diffusivity , *THERMAL conductivity , *POLYCRYSTALS , *OPTICAL properties of metals - Abstract
A mid-infrared LiInSe2 (LISe) single crystal was successfully grown by the modified vertical Bridgman technique with dimensions of about Ø12 mmx30 mm. A large amount of high purity polycrystalline LISe used for crystal growth was synthesized in one run by a novel two-step synthesis method. The thermal properties of the crystal were carefully investigated by measuring the melting point, specific heat, and thermal diffusivity, and deriving the thermal conductivity. The transmission spectrum showed that the 50% transmittance level extends from 0.65 to 12.6 µm. The excellent thermal conductivity and optical properties indicate that LISe is one of only a few promising candidates for high average power nanosecond OPOs pumped by ~1 µm lasers. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
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