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Zhang Y, Su W, Niu Y, Zeng H, Liu L, Wang L, Xie W. Bif‑1 inhibits activation of inflammasome through autophagy regulatory mechanism. Mol Med Rep 2024; 29:67. [PMID: 38456519 PMCID: PMC10938286 DOI: 10.3892/mmr.2024.13191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/06/2024] [Indexed: 03/09/2024] Open
Abstract
Inflammasome activation is a crucial mechanism in inflammatory responses. Bax‑interacting factor 1 (Bif‑1) is required for the normal formation of autophagosomes, but its ability to exert an inflammatory regulatory effect remains unclear. The aim of the present study was to explore the role of Bif‑1 in inflammation, possibly mediated through autophagy regulation. Using a lipopolysaccharide (LPS)/adenosine triphosphate (ATP)‑induced inflammatory model in J774A.1 cells, the effect of Bif‑1 on inflammasome activation and the underlying mechanisms involving autophagy regulation were investigated. Elevated levels of NLR family pyrin domain containing protein 3 inflammasome and interleukin‑1β (IL‑1β) proteins were observed in J774A.1 cells after LPS/ATP induction. Furthermore, Bif‑1 and autophagy activity were significantly upregulated in inflammatory cells. Inhibition of autophagy resulted in inflammasome activation. Silencing Bif‑1 expression significantly upregulated IL‑1β levels and inhibited autophagy activity, suggesting a potential anti‑inflammatory role of Bif‑1 mediated by autophagy. Additionally, inhibition of the nuclear factor‑κB (NF‑κB) signaling pathway downregulated Bif‑1 and inhibited autophagy activity, highlighting the importance of NF‑κB in the regulation of Bif‑1 and autophagy. In summary, the current study revealed that Bif‑1 is a critical anti‑inflammatory factor against inflammasome activation mediated by a mechanism of autophagy regulation, indicating its potential as a therapeutic target for inflammatory regulation.
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Affiliation(s)
- Yuehui Zhang
- Department of Critical Care Medicine, The Second Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong 518101, P.R. China
| | - Wenhui Su
- State Key Laboratory of Chemical Oncogenomics, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong 518055, P.R. China
- Shenzhen Key Laboratory of Health Science and Technology, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong 518055, P.R. China
| | - Yaoyun Niu
- State Key Laboratory of Chemical Oncogenomics, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong 518055, P.R. China
- Shenzhen Key Laboratory of Health Science and Technology, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong 518055, P.R. China
| | - Hongli Zeng
- State Key Laboratory of Chemical Oncogenomics, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong 518055, P.R. China
- Shenzhen Key Laboratory of Health Science and Technology, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong 518055, P.R. China
| | - Lu Liu
- Department of Critical Care Medicine, The Second Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong 518101, P.R. China
| | - Lijun Wang
- Department of Critical Care Medicine, The Second Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong 518101, P.R. China
- Department of Critical Care Medicine, Shenzhen FuYong People's Hospital, Shenzhen, Guangdong 518103, P.R. China
| | - Weidong Xie
- State Key Laboratory of Chemical Oncogenomics, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong 518055, P.R. China
- Shenzhen Key Laboratory of Health Science and Technology, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong 518055, P.R. China
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Yang LQ, Huang AF, Xu WD. Biology of endophilin and it's role in disease. Front Immunol 2023; 14:1297506. [PMID: 38116012 PMCID: PMC10728279 DOI: 10.3389/fimmu.2023.1297506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 11/22/2023] [Indexed: 12/21/2023] Open
Abstract
Endophilin is an evolutionarily conserved family of protein that involves in a range of intracellular membrane dynamics. This family consists of five isoforms, which are distributed in various tissues. Recent studies have shown that Endophilin regulates diseases pathogenesis, including neurodegenerative diseases, tumors, cardiovascular diseases, and autoimmune diseases. In vivo, it regulates different biological functions such as vesicle endocytosis, mitochondrial morphological changes, apoptosis and autophagosome formation. Functional studies confirmed the role of Endophilin in development and progression of these diseases. In this study, we have comprehensively discussed the complex function of Endophilin and how the family contributes to diseases development. It is hoped that this study will provide new ideas for targeting Endophilin in diseases.
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Affiliation(s)
- Lu-Qi Yang
- Department of Evidence-Based Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - An-Fang Huang
- Department of Rheumatology and Immunology, Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Wang-Dong Xu
- Department of Evidence-Based Medicine, Southwest Medical University, Luzhou, Sichuan, China
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Functional Analyses of Bovine Foamy Virus-Encoded miRNAs Reveal the Importance of a Defined miRNA for Virus Replication and Host-Virus Interaction. Viruses 2020; 12:v12111250. [PMID: 33147813 PMCID: PMC7693620 DOI: 10.3390/v12111250] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/22/2020] [Accepted: 10/27/2020] [Indexed: 12/19/2022] Open
Abstract
In addition to regulatory or accessory proteins, some complex retroviruses gain a repertoire of micro-RNAs (miRNAs) to regulate and control virus–host interactions for efficient replication and spread. In particular, bovine and simian foamy viruses (BFV and SFV) have recently been shown to express a diverse set of RNA polymerase III-directed miRNAs, some with a unique primary miRNA double-hairpin, dumbbell-shaped structure not known in other viruses or organisms. While the mechanisms of expression and structural requirements have been studied, the functional importance of these miRNAs is still far from understood. Here, we describe the in silico identification of BFV miRNA targets and the subsequent experimental validation of bovine Ankyrin Repeat Domain 17 (ANKRD17) and Bax-interacting factor 1 (Bif1) target genes in vitro and, finally, the suppression of ANKRD17 downstream genes in the affected pathway. Deletion of the entire miRNA cassette in the non-coding part of the U3 region of the long terminal repeats attenuated replication of corresponding BFV mutants in bovine cells. This repression can be almost completely trans-complemented by the most abundant miRNA BF2-5p having the best scores for predicted and validated BFV miRNA target genes. Deletion of the miRNA cassette does not grossly affect particle release and overall particle composition.
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Frangež Ž, Fernández-Marrero Y, Stojkov D, Seyed Jafari SM, Hunger RE, Djonov V, Riether C, Simon HU. BIF-1 inhibits both mitochondrial and glycolytic ATP production: its downregulation promotes melanoma growth. Oncogene 2020; 39:4944-4955. [PMID: 32493957 DOI: 10.1038/s41388-020-1339-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 05/19/2020] [Accepted: 05/27/2020] [Indexed: 11/09/2022]
Abstract
Endophilin B1, also known as BAX-interacting protein 1 (BIF-1), is part of the endophilin B protein family, and is a multifunctional protein involved in the regulation of apoptosis, autophagy, and mitochondrial morphology. The role of BIF-1 in cancer is controversial since previous reports indicated to both tumor-promoting and tumor-suppressive roles, perhaps depending on the cancer cell type. In the present study, we report that BIF-1 is significantly downregulated in both primary and metastatic melanomas, and that patients with high levels of BIF-1 expression exhibited a better overall survival. Depleting BIF-1 using CRISPR/Cas9 technology in melanoma cells resulted in higher proliferation rates both in vitro and in vivo, a finding that was associated with increased ATP production, metabolic acidification, and mitochondrial respiration. We also observed mitochondrial hyperpolarization, but no increase in the mitochondrial content of BIF-1-knockout melanoma cells. In contrast, such knockout melanoma cells were equally sensitive to anticancer drug- or UV irradiation-induced cell death, and exhibited similar autophagic activities as compared with control cells. Taken together, it appears that downregulation of BIF-1 contributes to tumorigenesis in cutaneous melanoma by upregulating mitochondrial respiration and metabolism, independent of its effect on apoptosis and autophagy.
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Affiliation(s)
- Živa Frangež
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | | | - Darko Stojkov
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - S Morteza Seyed Jafari
- Department of Dermatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Robert E Hunger
- Department of Dermatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Carsten Riether
- Tumor Immunology, Department for Biomedical Research, University of Bern, Bern, Switzerland.,Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Hans-Uwe Simon
- Institute of Pharmacology, University of Bern, Bern, Switzerland. .,Department of Clinical Immunology and Allergology, Sechenov University, Moscow, Russia.
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Qiao Z, Jiang Y, Wang L, Wang L, Jiang J, Zhang J. Mutations in KIAA1109, CACNA1C, BSN, AKAP13, CELSR2, and HELZ2 Are Associated With the Prognosis in Endometrial Cancer. Front Genet 2019; 10:909. [PMID: 31787999 PMCID: PMC6854026 DOI: 10.3389/fgene.2019.00909] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 08/28/2019] [Indexed: 12/20/2022] Open
Abstract
Endometrial cancer (EC) is one of the most common gynecologic malignancies. Emerging studies had demonstrated the mutations in genes could serve as diagnostic or prognostic markers for human cancers. In this study, we screened mutated genes in EC and found that the mutations in KIAA1109, CACNA1C, BSN, AKAP13, CELSR2, and HELZ2 were correlated to the overall survival time in patients with EC. Bioinformatics analysis showed KIAA1109 was involved in regulating NIK/NF-kappaB signaling, CACNA1C was found to regulate cell migration and proliferation, BSN was found to regulate Wnt signaling pathway, CELSR2 was involved in regulating cell–cell adhesion, nuclear import, and protein folding, HELZ2 was found to regulate multiple immune related biological processes, and AKAP13 was involved in regulating translation, mRNA nonsense-mediated decay, rRNA processing, translational initiation, and mRNA splicing via spliceosome. The findings provided a novel therapeutic strategy in patients with EC.
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Affiliation(s)
- Zhiwei Qiao
- The Department of Gynaecology, Liaoning Cancer Hospital & Institute, Cancer Hospital of China Medical University, Shengyang, China
| | - Ying Jiang
- The Department of Gynaecology, Liaoning Cancer Hospital & Institute, Cancer Hospital of China Medical University, Shengyang, China
| | - Ling Wang
- The Department of Gynaecology, Liaoning Cancer Hospital & Institute, Cancer Hospital of China Medical University, Shengyang, China
| | - Lei Wang
- The Department of Gynaecology, Liaoning Cancer Hospital & Institute, Cancer Hospital of China Medical University, Shengyang, China
| | - Jing Jiang
- The Department of Gynaecology, Liaoning Cancer Hospital & Institute, Cancer Hospital of China Medical University, Shengyang, China
| | - Jingru Zhang
- The Department of Gynaecology, Liaoning Cancer Hospital & Institute, Cancer Hospital of China Medical University, Shengyang, China
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6
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Hu A, Li X, He J, Gong X, Wu Z, Ning P. Classical swine fever virus-Shimen infection upregulates SH3GLB1 expression in porcine alveolar macrophages. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2018.1552839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Aoxue Hu
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Xuepeng Li
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Jun He
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Xiaocheng Gong
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Zhongxing Wu
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Pengbo Ning
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi’an, Shaanxi, PR China
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Analyses of long non-coding RNA and mRNA profiling using RNA sequencing in calcium oxalate monohydrate-stimulated renal tubular epithelial cells. Urolithiasis 2018; 47:225-234. [PMID: 29947995 DOI: 10.1007/s00240-018-1065-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 06/08/2018] [Indexed: 01/10/2023]
Abstract
To study the expression profiles of lncRNA and mRNA in the calcium oxalate monohydrate-attached HK-2 cells, and investigate the association between critical lncRNA expression level and renal injury. The HK-2 cells were treated with crystal suspension of calcium oxalate. The effects of calcium oxalate crystals on the growth of HK-2 cells were determined by MTT assay. Total RNA was extracted and the lncRNA and mRNA expression profiles were analyzed by high-throughput transcriptase sequencing platform HiSeq 2500. The profile of identified lncRNAs and mRNAs were verified by real-time PCR and their potential function was analyzed by Gene Ontology database and KEGG signal pathway analysis. Calcium oxalate crystals adhered to the surface of HK-2 cells in few minutes and showed obvious cytotoxicity. RNA seq results showed that there were 25 differentially expressed lncRNAs in HK-2 cells treated with calcium oxalate crystals, of which 9 were up-regulated and 16 were down-regulated. The difference was verified by real-time PCR which showed statistically significant (P < 0.05). Calcium oxalate crystals have a significant effect on lncRNA and mRNA expression in human renal epithelial cells, which may play critical roles in kidney stone-mediated renal injury.
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Sun Y, Ma GJ, Hu XJ, Yin XY, Peng YH. Clinical significance of LMO1 in gastric cancer tissue and its association with apoptosis of cancer cells. Oncol Lett 2017; 14:6511-6518. [PMID: 29344115 PMCID: PMC5754903 DOI: 10.3892/ol.2017.7102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 09/07/2017] [Indexed: 12/25/2022] Open
Abstract
It has been reported that LMO1 gene was associated with progression, metastasis and apoptosis of leukemia, colorectal cancer and lung cancer. However, the association of LMO1 and gastric cancer remains unclear. The aim of this study is to analyze the relation between LMO1 expression and apoptosis of gastric cancer cells and explore the clinical implications of LMO1 in gastric cancer tissues. The results demonstrated that expression levels of LMO1 and Bcl-2 proteins in gastric cancer tissues were higher than those in adjacent tissues, whereas the opposite was detected for Bax expression (P<0.05). LMO1 protein was associated with TNM staging and lymph node metastasis in gastric cancer (P<0.05). The survival rate of the patients with positive LMO1 gastric carcinoma was lower than that with negative LOM1 expression, and LMO1 was as an independent prognostic factor in COX survival analysis (P<0.05). LMO1-siRNA transfected MKN45 cells had a significant decrease in LMO1 expression and the cell viability, despite of an increase in the apoptotic rate (P<0.05). Following LMO1-siRNA transfection, Bcl-2 expression decreased, while the expression of Bax increased (P<0.05). It's concluded that overexpressed LMO1 in gastric cancer could be as one of new markers of poor prognosis.
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Affiliation(s)
- Yun Sun
- Fourth Department of General Surgery, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Guo-Juan Ma
- Outpatient Department, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Xiao-Jie Hu
- Fourth Department of General Surgery, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Xiang-Yun Yin
- Fourth Department of General Surgery, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Yan-Hui Peng
- Third Department of General Surgery, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
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Wang Z, Wang Y, Zhang J, Hu Q, Zhi F, Zhang S, Mao D, Zhang Y, Liang H. Significance of the TMPRSS2:ERG gene fusion in prostate cancer. Mol Med Rep 2017; 16:5450-5458. [PMID: 28849022 PMCID: PMC5647090 DOI: 10.3892/mmr.2017.7281] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 06/28/2017] [Indexed: 12/31/2022] Open
Abstract
The transmembrane protease serine 2:v-ets erythroblastosis virus E26 oncogene homolog (TMPRSS2:ERG) gene fusion is common in prostate cancer, while its functional role is not fully understood. The present study aimed to investigate the significance of the TMPRSS2:ERG gene fusion in human prostate cancers using bioinformatics tools. Comprehensive alteration analysis of TMPRSS2 and ERG in 148 different human cancer studies was performed by cBioPortal, and the mRNA expression level of the ERG gene was evaluated using Oncomine analysis. Furthermore, lentiviral short hairpin (sh)RNA-mediated knockdown of TMPRSS2:ERG was performed to study the impact of ERG silencing on cell proliferation and cell cycle distribution in prostate cancer cells. The results demonstrated that the TMPRSS2 and ERG genes were mostly altered in prostate cancer, and the most frequent alteration was gene fusion. Oncomine analysis demonstrated that the ERG gene was significantly upregulated in prostate clinical samples compared with the normal prostate gland in four independent datasets, and a positive association was observed between potassium inwardly-rectifying channel subfamily J member 15, down syndrome critical region gene 4, potassium inwardly-rectifying channel subfamily J member 6 and ERG gene expression. There were 272 mutations of the ERG gene identified in the cBioPortal database; among the mutations, 2 missense mutations (R367C and P401H) were regarded as functional mutations (functional impact score >1.938). Furthermore, the present study successfully knocked down ERG gene expression through a lentiviral-mediated gene silencing approach in VCaP prostate cancer cells. The ERG mRNA and protein expression levels were both suppressed significantly, and a cell-cycle arrest at G0/G1 phase was observed after ERG gene silencing. In conclusion, these bioinformatics analyses provide novel insights for TMPRSS2:ERG fusion gene study in prostate cancer. Target inhibition of ERG expression could significantly cause cell growth arrest in prostate cancer cells, which could be a potentially valuable target for prostate cancer treatment. However, the precise mechanism of these results remains unclear; therefore, further studies are required.
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Affiliation(s)
- Zhu Wang
- Department of Urology, People's Hospital of Longhua New District of Shenzhen and Affiliated Shenzhen Longhua Hospital of Southern Medical University, Shenzhen, Guangdong 518109, P.R. China
| | - Yuliang Wang
- Department of Urology, Peking University People's Hospital, Beijing 100044, P.R. China
| | - Jianwen Zhang
- Department of Urology, People's Hospital of Longhua New District of Shenzhen and Affiliated Shenzhen Longhua Hospital of Southern Medical University, Shenzhen, Guangdong 518109, P.R. China
| | - Qiyi Hu
- Department of Urology, People's Hospital of Longhua New District of Shenzhen and Affiliated Shenzhen Longhua Hospital of Southern Medical University, Shenzhen, Guangdong 518109, P.R. China
| | - Fan Zhi
- Department of Urology, People's Hospital of Longhua New District of Shenzhen and Affiliated Shenzhen Longhua Hospital of Southern Medical University, Shenzhen, Guangdong 518109, P.R. China
| | - Shengping Zhang
- Department of Urology, People's Hospital of Longhua New District of Shenzhen and Affiliated Shenzhen Longhua Hospital of Southern Medical University, Shenzhen, Guangdong 518109, P.R. China
| | - Dengqi Mao
- Department of Urology, People's Hospital of Longhua New District of Shenzhen and Affiliated Shenzhen Longhua Hospital of Southern Medical University, Shenzhen, Guangdong 518109, P.R. China
| | - Ying Zhang
- Department of Urology, People's Hospital of Longhua New District of Shenzhen and Affiliated Shenzhen Longhua Hospital of Southern Medical University, Shenzhen, Guangdong 518109, P.R. China
| | - Hui Liang
- Department of Urology, People's Hospital of Longhua New District of Shenzhen and Affiliated Shenzhen Longhua Hospital of Southern Medical University, Shenzhen, Guangdong 518109, P.R. China
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