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Tu R, Kang Y, Pan Y, Da Y, Ren D, Zhang R, Cai Z, Liu Y, Xu J, Ma J, Zhou Z, Yin S, Li X, Zhang P, Zhang Q, Wang J, Lu X, Zhang C. USP29 activation mediated by FUBP1 promotes AURKB stability and oncogenic functions in gastric cancer. Cancer Cell Int 2024; 24:33. [PMID: 38233848 PMCID: PMC10792871 DOI: 10.1186/s12935-024-03224-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/10/2024] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Gastric cancer is a highly prevalent cancer type and the underlying molecular mechanisms are not fully understood. Ubiquitin-specific peptidase (USP) 29 has been suggested to regulate cell fate in several types of cancer, but its potential role in gastric carcinogenesis remains unclear. METHODS The expression of USP29 in normal and gastric cancer tissues was analyzed by bioinformatics analysis, immunohistochemistry and immunoblot. Gene overexpression, CRISPR-Cas9 technology, RNAi, and Usp29 knockout mice were used to investigate the roles of USP29 in cell culture, xenograft, and benzo[a]pyrene (BaP)-induced gastric carcinogenesis models. We then delineated the underlying mechanisms using mass spectrometry, co-immunoprecipitation (Co-IP), immunoblot, ubiquitination assay, chromatin immunoprecipitation (ChIP), quantitative real-time PCR (qRT-PCR), and luciferase assays. RESULTS In this study, we found that USP29 expression was significantly upregulated in gastric cancers and associated with poor patient survival. Ectopic expression of USP29 promoted, while depletion suppressed the tumor growth in vitro and in vivo mouse model. Mechanistically, transcription factor far upstream element binding protein 1 (FUBP1) directly activates USP29 gene transcription, which then interacts with and stabilizes aurora kinase B (AURKB) by suppressing K48-linked polyubiquitination, constituting a FUBP1-USP29-AURKB regulatory axis that medicates the oncogenic role of USP29. Importantly, systemic knockout of Usp29 in mice not only significantly decreased the BaP-induced carcinogenesis but also suppressed the Aurkb level in forestomach tissues. CONCLUSIONS These findings uncovered a novel FUBP1-USP29-AURKB regulatory axis that may play important roles in gastric carcinogenesis and tumor progression, and suggested that USP29 may become a promising drug target for cancer therapy.
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Affiliation(s)
- Rongfu Tu
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Xi'an, China.
| | - Ye Kang
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Xi'an, China
| | - Yiwen Pan
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China
| | - Yanyan Da
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Clinical Laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 17 Yongwai Zhengjie, Nanchang, 330006, China
- Jiangxi Provincial Center for Advanced Diagnostic Technology and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Medical Genetics, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 DongYue Dadao, Nanchang, 330209, China
| | - Doudou Ren
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Xi'an, China
| | - Ru Zhang
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Xi'an, China
| | - Zeqiong Cai
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Xi'an, China
| | - Yijia Liu
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China
| | - Jiao Xu
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China
| | - Junpeng Ma
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Clinical Laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 17 Yongwai Zhengjie, Nanchang, 330006, China
- Jiangxi Provincial Center for Advanced Diagnostic Technology and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Medical Genetics, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 DongYue Dadao, Nanchang, 330209, China
| | - Zhiyong Zhou
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Clinical Laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 17 Yongwai Zhengjie, Nanchang, 330006, China
- Jiangxi Provincial Center for Advanced Diagnostic Technology and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Medical Genetics, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 DongYue Dadao, Nanchang, 330209, China
| | - Shupeng Yin
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Clinical Laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 17 Yongwai Zhengjie, Nanchang, 330006, China
- Jiangxi Provincial Center for Advanced Diagnostic Technology and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Medical Genetics, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 DongYue Dadao, Nanchang, 330209, China
| | - Xiaozhuang Li
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Clinical Laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 17 Yongwai Zhengjie, Nanchang, 330006, China
- Jiangxi Provincial Center for Advanced Diagnostic Technology and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Medical Genetics, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 DongYue Dadao, Nanchang, 330209, China
| | - Peng Zhang
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Clinical Laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 17 Yongwai Zhengjie, Nanchang, 330006, China
- Jiangxi Provincial Center for Advanced Diagnostic Technology and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China
- Department of Medical Genetics, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 DongYue Dadao, Nanchang, 330209, China
| | - Qi Zhang
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingchao Wang
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, Department of Biochemistry and Molecular Biology, Shenzhen University School of Medicine, Shenzhen, 518055, China
| | - Xinlan Lu
- Department of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Chengsheng Zhang
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Xi'an, China.
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China.
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China.
- Department of Clinical Laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 17 Yongwai Zhengjie, Nanchang, 330006, China.
- Jiangxi Provincial Center for Advanced Diagnostic Technology and Precision Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 Dongyue Dadao, Nanchang, 330209, China.
- Department of Medical Genetics, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1519 DongYue Dadao, Nanchang, 330209, China.
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Cai Z, Bai H, Ren D, Xue B, Liu Y, Gong T, Zhang X, Zhang P, Zhu J, Shi B, Zhang C. Integrin αvβ1 facilitates ACE2-mediated entry of SARS-CoV-2. Virus Res 2024; 339:199251. [PMID: 37884208 PMCID: PMC10651773 DOI: 10.1016/j.virusres.2023.199251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/14/2023] [Accepted: 10/23/2023] [Indexed: 10/28/2023]
Abstract
Integrins have been suggested to be involved in SARS-CoV-2 infection, but the underlying mechanisms remain largely unclear. This study aimed to investigate how integrins facilitate the ACE2-mediated cellular entry of SARS-CoV-2. We first tested the susceptibility of a panel of human cell lines to SARS-CoV-2 infection using the spike protein pseudotyped virus assay and examined the expression levels of integrins in these cell lines by qPCR, western blot and flow cytometry. We found that integrin αvβ1 was highly enriched in the SARS-CoV-2 susceptible cell lines. Additional studies demonstrated that RGD (403-405)→AAA mutant was defective in binding to integrin αvβ1 compared to its wild type counterpart, and anti-αvβ1 integrin antibodies significantly inhibited the entry of SARS-CoV-2 into the cells. Further studies using mouse NIH3T3 cells expressing human ACE2, integrin αv, integrin β1, and/or integrin αvβ1 suggest that integrin αvβ1 was unable to function as an independent receptor but could significantly facilitate the cellular entry of SASR-CoV-2. Finally, we observed that the Omicron exhibited a significant increase in the ACE2-mediated viral entry. Our findings may enhance our understanding of the pathogenesis of SARS-CoV-2 infection and offer potential therapeutic target for COVID-19.
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Affiliation(s)
- Zeqiong Cai
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Han Bai
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Doudou Ren
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Biyun Xue
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Yijia Liu
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China
| | - Tian Gong
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China; Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China
| | - Xuan Zhang
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China; Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China
| | - Peng Zhang
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China; Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China
| | - Junsheng Zhu
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Binyin Shi
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.
| | - Chengsheng Zhang
- Center for Molecular Diagnosis and Precision Medicine, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China; Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China; Department of Medical Genetics, The First Affiliated Hospital of Nanchang University, 17 Yongwai Zhengjie, Nanchang 330006, China.
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Zhang R, Cai Z, Ren D, Kang Y, Zhang Q, Lu X, Tu R. The emerging role of USP29 in cancer and other diseases. Cell Biochem Funct 2024; 42:e3928. [PMID: 38269503 DOI: 10.1002/cbf.3928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/19/2023] [Accepted: 01/04/2024] [Indexed: 01/26/2024]
Abstract
Reversible protein ubiquitination is a key process for maintaining cellular homeostasis. Deubiquitinases, which can cleave ubiquitin from substrate proteins, have been reported to be deeply involved in disease progression ranging from oncology to neurological diseases. The human genome encodes approximately 100 deubiquitinases, most of which are poorly characterized. One of the well-characterized deubiquitases is ubiquitin-specific protease 29 (USP29), which is often upregulated in pathological tissues and plays important roles in the progression of different diseases. Moreover, several studies have shown that deletion of Usp29 in mice does not cause visible growth and developmental defects, indicating that USP29 may be an ideal therapeutic target. In this review, we provide a comprehensive summary of the important roles and regulatory mechanisms of USP29 in cancer and other diseases, which may help us better understand its biological functions and improve future studies to construct suitable USP29-targeted therapy systems.
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Affiliation(s)
- Ru Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zeqiong Cai
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Doudou Ren
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ye Kang
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qi Zhang
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinlan Lu
- Department of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Rongfu Tu
- Department of Cancer Precision Medicine, The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Kang Y, Yu Y, Liu Y, Pan Y, Zhang R, Ren D, Cai Z, Ma J, Xiong X, Zhang Q, Zhang C, Tu R. Identification of USP29 as a key regulator of nucleotide biosynthesis in neuroblastoma through integrative analysis of multi-omics data. Cancer Biol Ther 2023; 24:2237200. [PMID: 37463886 PMCID: PMC10355683 DOI: 10.1080/15384047.2023.2237200] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/23/2023] [Accepted: 07/12/2023] [Indexed: 07/20/2023] Open
Abstract
Cancer cells show enhanced nucleotide biosynthesis, which is essential for their unlimited proliferation, but the underlying mechanisms are not entirely clear. Ubiquitin specific peptidase 29 (USP29) was reported to sustain neuroblastoma progression by promoting glycolysis and glutamine catabolism; however, its potential role in regulating nucleotide biosynthesis in tumor cells remains unknown. In this study, we depleted endogenous USP29 in MYCN-amplified neuroblastoma SK-N-BE2 cells by sgRNAs and conducted metabolomic analysis in cells with or without USP29 depletion, we found that USP29 deficiency caused a disorder of intermediates involved in glycolysis and nucleotide biosynthesis. De novo nucleotide biosynthesis was analyzed using 13C6 glucose as a tracer under normoxia and hypoxia. The results indicated that USP29-depleted cells showed inhibition of nucleotide anabolic intermediates derived from glucose, and this inhibition was more significant under hypoxic conditions. Analysis of RNA sequencing data in SK-N-BE2 cells demonstrated that USP29 promoted the gene expression of metabolic enzymes involved in nucleotide anabolism, probably by regulating MYC and E2F downstream pathways. These findings indicated that USP29 is a key regulator of nucleotide biosynthesis in tumor cells.
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Affiliation(s)
- Ye Kang
- Department of Cancer Precision Medicine, the MED-X Institute, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yahuan Yu
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yijia Liu
- Precision Medicine Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yiwen Pan
- Precision Medicine Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Ru Zhang
- Department of Cancer Precision Medicine, the MED-X Institute, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Doudou Ren
- Department of Cancer Precision Medicine, the MED-X Institute, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Zeqiong Cai
- Department of Cancer Precision Medicine, the MED-X Institute, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Junpeng Ma
- Precision Medicine Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- Center for Molecular Diagnosis and Precision Medicine, Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiaofan Xiong
- Precision Medicine Institute, Western China Science and Technology Innovation Harbor, Xi’an, China
| | - Qi Zhang
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chengsheng Zhang
- Department of Cancer Precision Medicine, the MED-X Institute, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- Precision Medicine Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- Center for Molecular Diagnosis and Precision Medicine, Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Rongfu Tu
- Department of Cancer Precision Medicine, the MED-X Institute, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
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Bai H, Liang L, Qi X, Xu Y, Liu Y, Ren D, Cai Z, Mao W, Wang X, Qin H, Hu F, Shi B. Thymosin α1 modulated the immune landscape of COVID-19 patients revealed by single-cell RNA and TCR sequencing. Int Immunopharmacol 2023; 124:110983. [PMID: 37769533 DOI: 10.1016/j.intimp.2023.110983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/12/2023] [Accepted: 09/21/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND The Coronavirus disease-19 (COVID-19) pandemic has posed a serious threat to global health. Thymosin α1 (Tα1) was considered to be applied in COVID-19 therapy. However, the data remains limited. METHODS Participants with or without Tα1 treatment were recruited. Single cell RNA-sequencing (scRNA-seq) and T cell receptor-sequencing (TCR-seq) of the peripheral blood mononuclear cell (PBMC) samples were done to analyze immune features. The differential expression analysis and functional enrichment analysis were performed to explore the mechanism of Tα1 therapy. RESULTS 33 symptomatic SARS-CoV-2-infected individuals (COV) and 11 healthy controls (HC) were enrolled in this study. The proportion of CD3+ KLRD1+ NKT, TBX21+ CD8+ NKT was observed to increase in COVID-19 patients with Tα1 treatment (COVT) than those without Tα1 (COV) (p = 0.024; p = 0.010). These two clusters were also significantly higher in Health controls with Tα1 treatment (HCT) than those without Tα1 (HC) (p = 0.016; p = 0.031). Besides, a series of genes and pathways related to immune responses were significantly higher enriched in Tα1 groups TBX21+ CD8+ NKT, such as KLRB1, PRF1, natural killer cell-mediated cytotoxicity pathway, chemokine signaling pathway, JAK-STAT signaling pathway. The increased TRBV9-TRBJ1-1 pair existed in both HCs and COVID-19 patients after Tα1 treatment. 1389 common complementarity determining region 3 nucleotides (CDR 3 nt) were found in COV and HC, while 0 CDR 3 nt was common in COVT and HCT. CONCLUSIONS Tα1 increased CD3+ KLRD1+ NKT, TBX21+ CD8+ NKT cell proportion and stimulated the diversity of TCR clones in COVT and HCT. And Tα1 could regulate the expression of genes associated with NKT activation or cytotoxicity to promote NKT cells. These data support the use of Tα1 in COVID-19 patients.
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Affiliation(s)
- Han Bai
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Liyuan Liang
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Xin Qi
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China
| | - Yao Xu
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Yijia Liu
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China
| | - Doudou Ren
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Zeqiong Cai
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China
| | - Weikang Mao
- LC-BIO TECHNOLOGIES (HANGZHOU) CO., LTD., Hangzhou 310000, China
| | - Xiaorui Wang
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China
| | - Hongyu Qin
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China
| | - Fang Hu
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China
| | - Bingyin Shi
- The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Building 21, Western China Science and Technology Innovation Harbor, Xi'an 710000, China; Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.
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Zhang L, Ren D, Hu X, Sun J, Qi C, Wang Y, Lu L, Wei M. Establishment of the 3M syndrome animal model in CCDC8 knockout mice. Mol Biomed 2023; 4:24. [PMID: 37574524 PMCID: PMC10423707 DOI: 10.1186/s43556-023-00136-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 07/02/2023] [Indexed: 08/15/2023] Open
Affiliation(s)
- Lei Zhang
- School of Medicine, Nankai University, Tianjin, P.R. China
| | - Doudou Ren
- School of Medicine, Nankai University, Tianjin, P.R. China
| | - Xiaoyan Hu
- School of Medicine, Nankai University, Tianjin, P.R. China
| | - Jinhuan Sun
- School of Medicine, Nankai University, Tianjin, P.R. China
| | - Chunxia Qi
- School of Medicine, Nankai University, Tianjin, P.R. China
| | - Yanfeng Wang
- School of Medicine, Nankai University, Tianjin, P.R. China
| | - Lingling Lu
- School of Medicine, Nankai University, Tianjin, P.R. China.
| | - Min Wei
- School of Medicine, Nankai University, Tianjin, P.R. China.
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Botros M, Alsaghayer A, Tanabe C, Armas K, Mabry M, Goodarzi A, Yau S, Youssef J, Huang H, Ren D, Suarez E. Extending Cold Ischemic Time Using LUNGguard: A Single Center Experience in Time Shifting. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Zeng Q, Qi X, Ma J, Hu F, Wang X, Qin H, Li M, Huang S, Yang Y, Li Y, Bai H, Jiang M, Ren D, Kang Y, Zhao Y, Chen X, Ding X, Ye D, Wang Y, Jiang J, Li D, Chen X, Hu K, Zhang B, Shi B, Zhang C. Distinct miRNAs associated with various clinical presentations of SARS-CoV-2 infection. iScience 2022; 25:104309. [PMID: 35502319 PMCID: PMC9044631 DOI: 10.1016/j.isci.2022.104309] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 01/04/2022] [Accepted: 04/22/2022] [Indexed: 01/08/2023] Open
Abstract
MicroRNAs (miRNAs) have been shown to play important roles in viral infections, but their associations with SARS-CoV-2 infection remain poorly understood. Here, we detected 85 differentially expressed miRNAs (DE-miRNAs) from 2,336 known and 361 novel miRNAs that were identified in 233 plasma samples from 61 healthy controls and 116 patients with COVID-19 using the high-throughput sequencing and computational analysis. These DE-miRNAs were associated with SASR-CoV-2 infection, disease severity, and viral persistence in the patients with COVID-19, respectively. Gene ontology and KEGG pathway analyses of the DE-miRNAs revealed their connections to viral infections, immune responses, and lung diseases. Finally, we established a machine learning model using the DE-miRNAs between various groups for classification of COVID-19 cases with different clinical presentations. Our findings may help understand the contribution of miRNAs to the pathogenesis of COVID-19 and identify potential biomarkers and molecular targets for diagnosis and treatment of SARS-CoV-2 infection. 2,336 known and 361 novel miRNAs identified in this study 85 miRNAs associated with COVID-19 A panel of miRNAs targeting the viral or cellular genes Machine learning using miRNAs for classification of COVID-19
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Affiliation(s)
- Qiqi Zeng
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Xin Qi
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Junpeng Ma
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Fang Hu
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Xiaorui Wang
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Hongyu Qin
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Mengyang Li
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Shaoxin Huang
- SpecAlly Life Technology Co, Ltd, Wuhan East Lake High-tech Development Zone, 666 Gaoxin Road, Wuhan 430075, China
| | - Yong Yang
- SpecAlly Life Technology Co, Ltd, Wuhan East Lake High-tech Development Zone, 666 Gaoxin Road, Wuhan 430075, China
| | - Yixin Li
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Han Bai
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Meng Jiang
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Doudou Ren
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Ye Kang
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China
| | - Yang Zhao
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, 99 Zhangzhidong Road, Wuhan 430060, China
| | - Xiaobei Chen
- Department of Infectious Diseases, The Renmin Hospital of Wuhan University, East Campus, East Lake New Technology Development Zone, Gaoxin 6th Road, Wuhan 430040, China
| | - Xi Ding
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China
| | - Di Ye
- Department of Rehabilitation, The Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuchang District, Wuhan 430060, China
| | - Yankui Wang
- Dialysis Center, The Renmin Hospital of Wuhan University, East Campus, East Lake New Technology Development Zone, Gaoxin 6th Road, Wuhan 430040, China
| | - Jianguo Jiang
- LC-Bio Technologies (Hangzhou) Co., Ltd., Hanghzhou 310000, China
| | - Dong Li
- Department of Clinical Laboratory, The Renmin Hospital of Wuhan University, East Campus, East Lake New Technology Development Zone, Gaoxin 6th Road, Wuhan 430040, China
| | - Xi Chen
- SpecAlly Life Technology Co, Ltd, Wuhan East Lake High-tech Development Zone, 666 Gaoxin Road, Wuhan 430075, China.,Wuhan Institute of Biotechnology, Wuhan East Lake High-tech Development Zone, 666 Gaoxin Road, Wuhan 430040, China
| | - Ke Hu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, 99 Zhangzhidong Road, Wuhan 430060, China
| | - Binghong Zhang
- The Renmin Hospital of Wuhan University, East Campus, East Lake New Technology Development Zone, Gaoxin 6th Road, Wuhan 430040, China
| | - Bingyin Shi
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China
| | - Chengsheng Zhang
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The MED-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Western China Science and Technology Innovation Harbor, Building 21, Xi'an 710000, China.,Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an 710061, China.,The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
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9
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Zhang B, Liu W, Ren D, Li F, Wang Y, Huo D, Zhu S, Chen J, Song Q, Xu S. 62MO Comparison of lobectomy and sublobar resection for stage IA elderly NSCLC patients (≥70 years): A population-based propensity score matching study. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01904-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Zeng R, Ren D, Gong X, Wei M, Gao L, Yu A, Zhang D, Mi Y, Ma P. HIV-1 Genetic Diversity and High Prevalence of Pretreatment Drug Resistance in Tianjin, China. AIDS Res Hum Retroviruses 2020; 36:852-861. [PMID: 32539490 DOI: 10.1089/aid.2020.0056] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Diversity of genotypes and prevalence of pretreatment drug resistance (PDR) are challenges for the epidemic control and vaccine development of HIV-1. However, little is known about the situation in Tianjin. Blood samples were collected from newly diagnosed, antiretroviral treatment (ART)-naive HIV/AIDS patients from January 2016 to November 2019. The target fragment in the pol gene was sequenced after RNA extraction and gene amplification. The HIV-1 genotype was identified by phylogenetic analysis. Drug resistance was carried out using the Stanford University HIVdb algorithm. A total of 305 pol sequences from 279 non-PDR individuals and 35 PDR individuals were successfully amplified. The most prevalent genotype was CRF01_AE (65.6%, 200/305), followed by CRF07_BC (22.0%, 67/305) and B (3.0%, 9/305). A variety of circulating recombinant forms (CRFs) and unique recombinant forms were found. The overall incidence of PDR was 11.5% (35/305), with 9.8% (30/305) to non-nucleoside reverse transcriptase (RT) inhibitors (NNRTIs). The most frequent mutation pattern against NNRTIs was V179D/E/T (6.9%, 21/305), with M184V (1.0%, 3/305) and K65R (1.0%, 3/305) against nucleoside RT inhibitors (NRTIs). M64L (0.1%, 1/305) was the sole mutation found against protease inhibitors (PIs). Eight variants generated at least low-level resistance to NNRTIs (2.6%, 8/305), which was much higher than that to NRTIs (1.6%, 5/305) and PIs (0/305) (p < .05). Genotypic drug resistance testing before initiating ART in newly diagnosed HIV/AIDS patients may be necessary in Tianjin, China. The non-NNRTI-based regimen may be preferred as initial therapy in Tianjin.
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Affiliation(s)
- Rui Zeng
- School of Graduate, Tianjin Medical University, Tianjin, China
- Department of Infectious Disease, Tianjin Second People's Hospital, Tianjin, China
| | - Doudou Ren
- School of Medicine, Nankai University, Tianjin, China
| | - Xiaowen Gong
- Epidemiology and Biostatistics Institute, Tianjin Medical University, Tianjin, China
| | - Min Wei
- School of Medicine, Nankai University, Tianjin, China
| | - Liying Gao
- Department of Infectious Disease, Tianjin Second People's Hospital, Tianjin, China
| | - Aiping Yu
- Department of Infectious Disease, Tianjin Second People's Hospital, Tianjin, China
| | - Defa Zhang
- Department of Infectious Disease, Tianjin Second People's Hospital, Tianjin, China
| | - Yuqiang Mi
- Department of Infectious Disease, Tianjin Second People's Hospital, Tianjin, China
| | - Ping Ma
- Department of Infectious Disease, Tianjin Second People's Hospital, Tianjin, China
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11
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Jiang B, Su R, Ren D, Zheng X, Cao Y, Mi Y, Wang F, Ma P. Evaluation of HBV serological markers in treatment-naïve HBV mono-infected patients and HBV-HIV co-infected patients. Virus Res 2020; 290:198117. [PMID: 32800804 DOI: 10.1016/j.virusres.2020.198117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/28/2020] [Accepted: 08/06/2020] [Indexed: 01/04/2023]
Abstract
OBJECTIVES Many studies have investigated the utility of hepatitis B virus (HBV) serological markers in HBV-infected patients. However, only a few studies have examined HBV serological markers in HBV-human immunodeficiency virus (HIV) co-infected patients. Here, we conducted a cross-sectional study to evaluate correlations of HBV serological markers in treatment-naïve HBV mono-infected patients and HBV-HIV co-infected patients. METHODS HBsAg, HBV DNA, HBV RNA, and HBcrAg were quantified in 51 HBV mono-infected patients and 33 HBV-HIV co-infected patients recruited at Tianjin Second People's Hospital from 2016 to 2019. RESULTS There was no significant difference in serum levels of HBV DNA (P = 0.056), HBV RNA (P = 0.387), HBcrAg (P = 0.714) and HBsAg (P = 0.165) between the patient groups. In HBV mono-infected patients, strong positive correlations were confirmed between HBV RNA and HBV DNA (r=0.620, P < 0.01), HBcrAg and HBV DNA (r=0.802, P < 0.001), and HBcrAg and HBV RNA (r=0.727, P < 0.01). In HBV-HIV co-infected patients, serum HBsAg was very strongly correlated with HBcrAg (r=0.838, P < 0.001). In HBeAg-positive HBV mono-infected patients, all HBV serological markers correlated with each other, whereas only HBV RNA correlated with HBcrAg in HBeAg-negative HBV mono-infected patients (r=0.688, P = 0.007). In HBeAg-positive HBV-HIV co-infected patients, only HBsAg correlated with HBcrAg (r=0.725, P<0.001), whereas HBcrAg and HBV RNA correlated with each other in HBeAg-negative patients (r = 0.683, P=0.010). Moreover, CD4 T-cell counts were not significantly associated with HBsAg, HBV DNA, HBV RNA, and HBcrAg levels. CONCLUSION Compared with HBsAg and HBV DNA, which are widely used in clinical settings, our study confirmed that new HBV serological markers, such as HBV RNA and HBcrAg, have some utility in HBV mono-infected patients and HBV-HIV co-infected patients for monitoring the progression of liver disease.
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Affiliation(s)
- Bei Jiang
- Tianjin Second People's Hospital, Tianjin, 300192, PR China; Tianjin Institute of Hepatology, Tianjin, 300192, PR China
| | - Rui Su
- Tianjin Second People's Hospital, Tianjin, 300192, PR China; Tianjin Institute of Hepatology, Tianjin, 300192, PR China
| | - Doudou Ren
- School of Medicine, Nankai University, Tianjin, 300071, PR China
| | - Xiaoya Zheng
- Tianjin Second People's Hospital, Tianjin, 300192, PR China; Tianjin Institute of Hepatology, Tianjin, 300192, PR China
| | - Yu Cao
- Tianjin Second People's Hospital, Tianjin, 300192, PR China; Tianjin Institute of Hepatology, Tianjin, 300192, PR China
| | - Yuqiang Mi
- Tianjin Second People's Hospital, Tianjin, 300192, PR China; Tianjin Institute of Hepatology, Tianjin, 300192, PR China
| | - Fengmei Wang
- Tianjin Second People's Hospital, Tianjin, 300192, PR China; Tianjin Institute of Hepatology, Tianjin, 300192, PR China.
| | - Ping Ma
- Tianjin Second People's Hospital, Tianjin, 300192, PR China; Tianjin Institute of Hepatology, Tianjin, 300192, PR China.
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12
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Drizik E, Corbett S, Zheng Y, Vermeulen R, Dai Y, Hu W, Ren D, Duan H, Niu Y, Xu J, Fu W, Meliefste K, Zhou B, Zhang X, Yang J, Bassig B, Liu H, Ye M, Liu G, Jia X, Meng T, Bin P, Zhang J, Silverman D, Spira A, Rothman N, Lenburg ME, Lan Q. Transcriptomic changes in the nasal epithelium associated with diesel engine exhaust exposure. Environ Int 2020; 137:105506. [PMID: 32044442 PMCID: PMC8725607 DOI: 10.1016/j.envint.2020.105506] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 12/19/2019] [Accepted: 01/17/2020] [Indexed: 05/13/2023]
Abstract
BACKGROUND Diesel engine exhaust (DEE) exposure causes lung cancer, but the molecular mechanisms by which this occurs are not well understood. OBJECTIVES To assess transcriptomic alterations in nasal epithelium of DEE-exposed factory workers to better understand the cellular and molecular effects of DEE. METHODS Nasal epithelial brushings were obtained from 41 diesel engine factory workers exposed to relatively high levels of DEE (17.2-105.4 μg/m3), and 38 unexposed workers from factories without DEE exposure. mRNA was profiled for gene expression using Affymetrix microarrays. Linear modeling was used to identify differentially expressed genes associated with DEE exposure and interaction effects with current smoking status. Pathway enrichment among differentially expressed genes was assessed using EnrichR. Gene Set Enrichment Analysis (GSEA) was used to compare gene expression patterns between datasets. RESULTS 225 genes had expression associated with DEE exposure after adjusting for smoking status (FDR q < 0.25) and were enriched for genes in pathways related to oxidative stress response, cell cycle pathways such as MAPK/ERK, protein modification, and transmembrane transport. Genes up-regulated in DEE-exposed individuals were enriched among the genes most up-regulated by cigarette smoking in a previously reported bronchial airway smoking dataset. We also found that the DEE signature was enriched among the genes most altered in two previous studies of the effects of acute DEE on PBMC gene expression. An exposure-response relationship was demonstrated between air levels of elemental carbon and the first principal component of the DEE signature. CONCLUSIONS A gene expression signature was identified for workers occupationally exposed to DEE that was altered in an exposure-dependent manner and had some overlap with the effects of smoking and the effects of acute DEE exposure. This is the first study of gene expression in nasal epithelial cells of workers heavily exposed to DEE and provides new insights into the molecular alterations that occur with DEE exposure.
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Affiliation(s)
- E Drizik
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - S Corbett
- Bioinformatics Program, Boston University, Boston, MA, USA
| | - Y Zheng
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - R Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Y Dai
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - W Hu
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - D Ren
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - H Duan
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Y Niu
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - J Xu
- Hong Kong University, Hong Kong, China
| | - W Fu
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - K Meliefste
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - B Zhou
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiaohui Zhang
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - J Yang
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - Bryan Bassig
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Hanqiao Liu
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - M Ye
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Gang Liu
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - X Jia
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - T Meng
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - P Bin
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - J Zhang
- Nicholas School of the Environment and Duke Global Health Institute, Duke University, Durham, NC, USA; Global Health Research Center, Duke Kunshan University, Kunshan City, Jiangsu Province, China
| | - D Silverman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - A Spira
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Bioinformatics Program, Boston University, Boston, MA, USA; The Lung Cancer Initiative at Johnson & Johnson, Cambridge, MA, USA
| | - N Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - M E Lenburg
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Bioinformatics Program, Boston University, Boston, MA, USA.
| | - Q Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
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13
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Ren D, Shen R, Jiang Z, Lu X, Li X. Highly efficient visible-light photocatalytic H2 evolution over 2D–2D CdS/Cu7S4 layered heterojunctions. Chinese Journal of Catalysis 2020. [DOI: 10.1016/s1872-2067(19)63467-4] [Citation(s) in RCA: 140] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Belmadani A, Jayaraj N, Ren D, George D, Paller A, Miller R, Menichella D. 666 Role for epidermal keratinocytes in small fiber degeneration in diabetic peripheral neuropathy. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Nugent BD, Ren D, Bender C, Rosenzweig M. Abstract P1-17-10: The impact of age and adjuvant chemotherapy modifications on disease-free and overall survival among African American women with breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-17-10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: During chemotherapy for breast cancer, African American women receive less relative dose intensity with more dose reductions and early chemotherapy cessation compared to Caucasian women. Other research has found that older breast cancer patients are most at risk for treatment modifications; however, it is unclear if this remains true for African American patients. Furthermore, the clinical implications of treatment modifications and delays on survival is uncertain, particularly in African American patients.
Purpose: The purpose of this study was to investigate whether age (diagnosis <55 vs. diagnosis ≥55) was a moderator for the association between treatment modifications (dose held, dose delayed, and early cessation) and overall survival (OS) and disease-free survival (DFS) in African American women with breast cancer.
Methods: A retrospective cohort study of early stage African American breast cancer patients treated with adjuvant chemotherapy was employed. Dose held, dose delayed and early cessation were examined as dichotomous variables: any adjustment to the initially prescribed treatment plan was considered a modification. Medical record data extraction was utilized to gather this information. The sample was divided into two groups: those diagnosed <55 years of age and those diagnosed ≥55 years of age. A Cox's proportional hazards regression model was used to examine the interaction between age group and treatment modifications for OS and DFS, while controlling for stage and ER and HER2 status.
Results: In the study of 115 participants, 58 (50.4%) were diagnosed before the age of 55, and 57 (49.6%) were diagnosed age 55 or older. Across the entire sample, 43 (37.4%) patients experienced a treatment modification. There were no significant differences in the proportions of treatment modifications between the two age groups. We found no interaction between age group and treatment modifications for OS. However, there was a significant interaction between age group and held dose for DFS (p=0.045). Specifically, those diagnosed at 55 years of age and older, who had doses of chemotherapy held, experienced worse DFS compared to those who did not (hazard ratio (HR)=3.390, 95% CI (1.013,11.34)). In contrast, there was no difference in DFS between those who did and did not have doses held in patients diagnosed below 55 years of age (HR=0.563, 95%CI (0.159, 1.986)).
Conclusions: African American women receiving adjuvant chemotherapy for treatment of early stage breast cancer have high levels of treatment modifications across all age groups. However, held doses of chemotherapy in older African American patients were associated with worse DFS. Further research is needed to elucidate the clinical implications of adjuvant chemotherapy treatment modifications, particularly in African American patients, and the subgroups of patients who are at greatest risk.
Citation Format: Nugent BD, Ren D, Bender C, Rosenzweig M. The impact of age and adjuvant chemotherapy modifications on disease-free and overall survival among African American women with breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-17-10.
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Affiliation(s)
- BD Nugent
- University of Pittsburgh, Pittsburgh, PA
| | - D Ren
- University of Pittsburgh, Pittsburgh, PA
| | - C Bender
- University of Pittsburgh, Pittsburgh, PA
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16
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Pan Y, Jing J, Qiao L, Liu J, An L, Li B, Ren D, Liu W. MiRNA-seq reveals that miR-124-3p inhibits adipogenic differentiation of the stromal vascular fraction in sheep via targeting C/EBPα. Domest Anim Endocrinol 2018; 65:17-23. [PMID: 29860204 DOI: 10.1016/j.domaniend.2018.05.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/24/2018] [Accepted: 05/02/2018] [Indexed: 01/17/2023]
Abstract
MicroRNAs (miRNAs) are small noncoding 20-25 nt RNA molecules that regulate gene expression by posttranscriptional repression of messenger RNA. There have been few investigations on the profiles and functions of miRNAs in ovine subcutaneous fat; their roles in the metabolism and deposition of subcutaneous fat also remain unclear. In this study, small RNA libraries were constructed for 2 important Chinese local sheep breeds, Small-tailed Han Sheep, and Shanxi Meat Sheep Dam Line, and used for high-throughput sequencing. Differentially expressed miRNAs were identified, revealing the effect of miR-124-3p on adipogenic differentiation by targeting C/EBPα. Our results provide both a comprehensive understanding of miRNA expression patterns in sheep subcutaneous fat and an insight into the specific roles of miRNAs in adipogenesis.
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Affiliation(s)
- Y Pan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - J Jing
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - L Qiao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - J Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - L An
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - B Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - D Ren
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - W Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China.
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17
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Ayrton ST, Chen X, Bain RM, Pulliam CJ, Achmatowicz M, Flick TG, Ren D, Cooks RG. Gas Phase Ion Chemistry to Determine Isoaspartate in a Peptide Backbone. J Am Soc Mass Spectrom 2018; 29:1339-1344. [PMID: 29546595 DOI: 10.1007/s13361-018-1923-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
Proof of concept evidence is presented for a new method for the determination of isoaspartate, an important post-translational modification. Chemical derivatization is performed using common reagents for the modification of carboxylic acids and shown to yield suitable diagnostic information with regard to isomerization at the aspartate residue. The diagnostic gas phase chemistry is probed by collision-induced dissociation mass spectrometry, on the timescale of the MS experiment and semi-quantitative calibration of the percentage of isoaspartate in a peptide sample is demonstrated. Graphical Abstract ᅟ.
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Affiliation(s)
- S T Ayrton
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - X Chen
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - R M Bain
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - C J Pulliam
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - M Achmatowicz
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - T G Flick
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - D Ren
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - R G Cooks
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA.
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Ding P, Ren D, He S, He M, Zhang G, Chen Y, Sang H, Peng Z, Yan W. Sirt1 mediates improvement in cognitive defects induced by focal cerebral ischemia following hyperbaric oxygen preconditioning in rats. Physiol Res 2017; 66:1029-1039. [PMID: 28937253 DOI: 10.33549/physiolres.933544] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hyperbaric oxygen preconditioning (HBO-PC) has been proposed as a safe and practical approach for neuroprotection in ischemic stroke. However, it is not known whether HPO-PC can improve cognitive deficits induced by cerebral ischemia, and the mechanistic basis for any beneficial effects remains unclear. We addressed this in the present study using rats subjected to middle cerebral artery occlusion (MCAO) as an ischemic stroke model following HBO-PC. Cognitive function and expression of phosphorylated neurofilament heavy polypeptide (pNF-H) and doublecortin (DCX) in the hippocampus were evaluated 14 days after reperfusion and after short interfering RNA-mediated knockdown of sirtuin1 (Sirt1). HBO-PC increased pNF-H and DCX expression and mitigated cognitive deficits in MCAO rats. However, these effects were abolished by Sirt1 knockdown. Our results suggest that HBO-PC can protect the brain from injury caused by ischemia-reperfusion and that Sirt1 is a potential molecular target for therapeutic approaches designed to minimize cognitive deficits caused by cerebral ischemia.
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Affiliation(s)
- P Ding
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, China, Department of Psychiatry, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China. pengzhengwu1446@ 163.com and
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Wang H, Xia F, Xing DM, Ren D, Feng W, Chen Y, Xiao ZH, Zhao ZM. [Effects of vacuum sealing drainage technique in acute and chronic suppurative tenosynovitis of hand]. Zhonghua Wai Ke Za Zhi 2017; 55:384-388. [PMID: 28464581 DOI: 10.3760/cma.j.issn.0529-5815.2017.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects of vacuum sealing drainage technique in acute and chronic suppurative tenosynovitis of hand. Methods: A total of 9 cases acute and chronic suppurative tenosynovitis patients from January 2013 to April 2015 in Puai Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology were retrospectively reviewed. There were 6 males and 3 females, aging from 27 to 65 years, the average age was 55 years. There were 3 cases of index finger, 3 cases of middle finger, 2 cases of ring finger, 1 case include three fingers. The infection causes included stabbing with fishbone in 3 cases, stabbing with animal bone fragments in 3 cases, wound by sawdust in 3 cases, meat grinder injury in 1 case, multiple fingers crush injury postoperative infection of garbage truck in 1 case. Bacterial infection included 2 cases with Staphylococcus aureus, 2 cases with Staphylococcus epidermidis, 1 case with normal Escherichia coli, 1 case with mixed infection of Enterobacter aerogenes, Klebsiella oxytoca and Staphylococcus, 1 case with Bauman Acinetobacter bacillus, 1 case with Proteus mirabilis and 1 case of no growth of pathogenic bacteria culture. After thorough debridement, vacuum sealing drainage was used to observe the characteristics of irrigation fluid, the formation of cavity inflammation, the prognosis of infection and the recovery of finger function. Results: Seven patients with suppurative tenosynovitis were treated for 7 to 14 days, replaced the vacuum sealing drainage dressing once; 1 patient was an illustration of the finger tip defect flap infected patients after 21 days of treatment, replaced the vacuum sealing drainage dressing twice, 1 patient was an illustration of the central refers to trauma, postoperative infection patients 28 d, replaced three times in the VSD. The follow-up time was 3 to 12 months (mean 8.2 months), 7 patients without tendon necrosis, secondary suture with no infection, 2 cases of traumatic surgery of patients with infection, tendon necrosis was removed, the infection has been effectively controlled, secondary suture with no infection. There were 6 cases were good and 3 cases were poor in the evaluation of postoperative finger function. Conclusion: Thoroughly debridement after vacuum sealing drainage in the treatment of suppurative tenosynovitis of hand has satisfactory curative effect.
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Affiliation(s)
- H Wang
- Department of Hand Surgery, Puai Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Ren D, Zhang XX, Wang HK, Li WJ, Yu Y. Improving thermo-oxidative degradation resistance of bamboo fiber reinforced polypropylene composite with antioxidants. Part I: Screening of antioxidants. J Appl Polym Sci 2016. [DOI: 10.1002/app.44198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- D. Ren
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - X. X. Zhang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - H. K. Wang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - W. J. Li
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - Y. Yu
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
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Ren D, Zhang XX, Wang HK, Li WJ, Yu Y. Improving thermo-oxidative degradation resistance of bamboo fiber reinforced polymer composites with antioxidants. Part II: Effect on other select properties. J Appl Polym Sci 2016. [DOI: 10.1002/app.44199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- D. Ren
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - X. X. Zhang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - H. K. Wang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - W. J. Li
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - Y. Yu
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
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Li L, Zeng Q, Ren D, Huang L, Tang Y. 0517 Effect of buffalo αs1-casein polymorphism on the semi-hard Monterey Jack-type cheese quality. J Anim Sci 2016. [DOI: 10.2527/jam2016-0517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kim JM, Ren D, Reverter A, Roura E. A regulatory gene network related to the porcine umami taste receptor (TAS1R1/TAS1R3). Anim Genet 2015; 47:114-9. [PMID: 26554867 DOI: 10.1111/age.12374] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2015] [Indexed: 11/28/2022]
Abstract
Taste perception plays an important role in the mediation of food choices in mammals. The first porcine taste receptor genes identified, sequenced and characterized, TAS1R1 and TAS1R3, were related to the dimeric receptor for umami taste. However, little is known about their regulatory network. The objective of this study was to unfold the genetic network involved in porcine umami taste perception. We performed a meta-analysis of 20 gene expression studies spanning 480 porcine microarray chips and screened 328 taste-related genes by selective mining steps among the available 12,320 genes. A porcine umami taste-specific regulatory network was constructed based on the normalized coexpression data of the 328 genes across 27 tissues. From the network, we revealed the 'taste module' and identified a coexpression cluster for the umami taste according to the first connector with the TAS1R1/TAS1R3 genes. Our findings identify several taste-related regulatory genes and extend previous genetic background of porcine umami taste.
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Affiliation(s)
- J M Kim
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - D Ren
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - A Reverter
- CSIRO Agriculture Flagship, Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, Queensland, 4067, Australia
| | - E Roura
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
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Abstract
Adhesion of microbes, such as bacteria and fungi, to surfaces and the subsequent formation of biofilms cause multidrug-tolerant infections in humans and fouling of medical devices. To address these challenges, it is important to understand how material properties affect microbe-surface interactions and engineer better nonfouling materials. Here we review the recent progresses in this field and discuss the main challenges and opportunities. In particular, we focus on bacterial biofilms and review the effects of surface energy, charge, topography, and stiffness of substratum material on bacterial adhesion. We summarize how these surface properties influence oral biofilm formation, and we discuss the important findings from nondental systems that have potential applications in dental medicine.
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Affiliation(s)
- F. Song
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, USA
| | - H. Koo
- Department of Orthodontics and Divisions of Pediatric Dentistry & Community Oral Health, University of Pennsylvania, Philadelphia, PA, USA
| | - D. Ren
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, USA
- Department of Civil and Environmental Engineering, Syracuse University, Syracuse, NY, USA
- Department of Biology, Syracuse University, Syracuse, NY, USA
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Sherwood PR, Weimer J, Price T, Ren D, Lieberman F, Donovan H. P18.09 * STRESS INDUCED IMMUNE DYSFUNCTION IN NEURO-ONCOLOGY CAREGIVERS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Jhun H, Chaikriangkrai K, Gudsoorkar V, Sinha N, Kaleekal T, Mankidy B, Scheinin S, Loebe M, Bruckner B, Ren D, Jyothula S. Prevalence of Gastroparesis After Lung Transplantation: A Single Center Study. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Ren D, Cai Z, Song J, Wu Z, Zhou S. dsRNA uptake and persistence account for tissue-dependent susceptibility to RNA interference in the migratory locust, Locusta migratoria. Insect Mol Biol 2014; 23:175-184. [PMID: 24308607 DOI: 10.1111/imb.12074] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
RNA interference (RNAi) by introducing double-stranded RNA (dsRNA) is a powerful approach to the analysis of gene function in insects; however, RNAi responses vary dramatically in different insect species and tissues, and the underlying mechanisms remain poorly understood. The migratory locust, a destructive insect pest and a hemimetabolic insect with panoistic ovaries, is considered to be a highly susceptible species to RNAi via dsRNA injection, but its ovary appears to be completely insensitive. In the present study, we showed that dsRNA persisted only briefly in locust haemolymph. The ovariole sheath was permeable to dsRNA, but injected dsRNA was not present in the follicle cells and oocytes. The lack of dsRNA uptake into the follicle cells and oocytes is likely to be the primary factor that contributes to the ineffective RNAi response in locust ovaries. These observations provide insights into tissue-dependent variability of RNAi and help in achieving successful gene silencing in insensitive tissues.
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Affiliation(s)
- D Ren
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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28
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Ai J, Huang Y, Xu K, Ren D, Qi X, Ji H, Ge A, Dai Q, Li J, Bao C, Tang F, Shi G, Shen T, Zhu Y, Zhou M, Wang H. Case-control study of risk factors for human infection with influenza A(H7N9) virus in Jiangsu Province, China, 2013. Euro Surveill 2013; 18:20510. [PMID: 23827526 DOI: 10.2807/1560-7917.es2013.18.26.20510] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We describe a case-control study performed in Jiangsu, China, to evaluate risk factors for human infection with novel avian influenza A(H7N9) virus. Twenty-five cases and 93 controls matched by age, sex, and location were included in the study. Direct contact with poultry or birds in the two weeks before illness onset, chronic medical conditions (hypertension excluded), and environment-related exposures were significantly associated with A(H7N9) infection.
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Affiliation(s)
- J Ai
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, China
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29
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Loebe M, Ren D, Rodriguez L, La Francesca S, Bismuth J, Lumsden A. Acute and chronic thoracic aortic disease: surgical considerations. HSR Proc Intensive Care Cardiovasc Anesth 2012; 4:243-50. [PMID: 23439669 PMCID: PMC3563558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Acute thoracic aortic aneurysm is one of the most life-threatening vascular disorders recognized to date. The majority of these aortic ruptures rapidly end in mortality, with 50% of patients suffering death before reaching the hospital. Thus, acute management through surgical intervention is often indicated, especially in cases of ascending aortic rupture. Physical examination is critical in making the diagnosis, as clinical signs and symptoms often vary depending on the location of the dissection. Clinicians should have a low threshold for including thoracic aortic dissection in their differential diagnosis, especially when a patient presents with acute onset chest or back pain. In this report, we discuss the different categories of aortic dissections and the current treatment modalities for each. These include endovascular aortic repair, which has become a viable treatment modality in certain cases of type B dissection. Offering a less invasive approach, the technique known as thoracic endovascular repair currently affords a treatment option to a patient population who would have otherwise been deemed non-surgical candidates. Hybrid thoracic endovascular aortic repair has also become a pertinent surgical technique, and successful outcomes have been demonstrated when it is employed to repair ascending aortic aneurysms. We also describe our Acute Aortic Treatment Center, a rapid multicentric triage system for the management of acute aortic pathologies, which has resulted in significant improvements in patient outcomes.
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Deng Y, Cai Y, Xiao J, Ling J, Fang L, Huang M, Peng J, Ren D, Lan P, Wang J. A pilot study of FOLFOX with or without radiation in treating patients with locally advanced rectal cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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31
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Ren D, Xing Y, Lin M, Wu Y, Li K, Li W, Yang S, Guo T, Ren J, Ma J, Lan L, Huang L. Evaluations of boar gonad development, spermatogenesis with regard to semen characteristics, libido and serum testosterone levels based on large White Duroc x Chinese Erhualian crossbred boars. Reprod Domest Anim 2010; 44:913-9. [PMID: 19000221 DOI: 10.1111/j.1439-0531.2008.01117.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chinese Erhualian pigs are known for prolificacy with distinct reproductive traits compared with Western commercial breeds. In this study, a four-generation intercross resource population was constructed using White Duroc boars and Chinese Erhualian sows as founder animals, and a total of 14 male reproductive traits were recorded in 411 F2/F3 boars including the testis and epididymis weights, the seminiferous tubular diameter and spermatogenesis at 60, 90 and 300 days of age, semen characteristics, serum testosterone concentration and libido level at 300 days of age. The White Duroc-Erhualian boars showed remarkable segregations in the traits measured except for the seminiferous tubular diameter and had high ratio (13.9%) of the abnormality of spermatogenesis, providing a good experimental population for detecting quantitative trait loci affecting these male reproductive traits. Furthermore, the correlations among nine male reproductive traits at 300 days of age indicated that the testis weight and the body weight were strongly correlated with the sperm production, supporting the two traits as important parameters for boar selection to increase sperm production and ultimately improve boar fertility. The libido level in the White Duroc-Erhualian boars that was evaluated by a new and easily recorded scoring system showed a significant correlation with serum testosterone concentration. Yet, both libido and serum testosterone concentration were not correlated with the sperm production. Results of this study provided new information on the male reproductive physiology and genetics in Chinese Erhualian and White Duroc boars.
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Affiliation(s)
- D Ren
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang 330045, China
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Zhu H, Chen H, Zhong Y, Ren D, Qian Y, Tang H, Zhu Y. Determination of Trace Inorganic Anions in Weak Acids by Single-Pump Column-Switching Ion Chromatography. J Chromatogr Sci 2010; 48:553-8. [DOI: 10.1093/chromsci/48.7.553] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Xie YD, Li W, Guo D, Dong J, Zhang Q, Fu Y, Ren D, Peng M, Xia Y. The Arabidopsis gene SIGMA FACTOR-BINDING PROTEIN 1 plays a role in the salicylate- and jasmonate-mediated defence responses. Plant Cell Environ 2010; 33:828-39. [PMID: 20040062 PMCID: PMC3208021 DOI: 10.1111/j.1365-3040.2009.02109.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The chloroplast-localized SIB1 protein was previously identified by its interaction with SIGMA FACTOR 1 (SIG1), a component of the RNA polymerase machinery responsible for transcription of plastid genes. The physiological function of SIB1 is little known. We found that expression of SIB1 is induced by infection with Pseudomonas syringae, suggesting its possible involvement in the defence response. The sib1 loss-of-function mutation compromises induction of some defence-related genes triggered by pathogen infection and the treatments with salicylic acid (SA) and jasmonic acid (JA), two key signalling molecules in the defence response. Conversely, constitutive over-expression of SIB1 causes the plants to hyper-activate defence-related genes following pathogen infection or the SA and JA treatments, leading to enhanced resistance to infection by P. syringae. SIB1 is a member of the large plant-specific VQ motif-containing protein family, and might act as a link to connect defence signalling with chloroplast function.
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Affiliation(s)
- Y-D Xie
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100094, China
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Cheng Y, Dong Y, Wang J, Dong M, Zou Y, Ren D, Yang X, Li M, Schrader A, Rohr M, Liu W. Moisturizing and anti-sebum secretion effects of cosmetic application on human facial skin. Int J Cosmet Sci 2010. [DOI: 10.1111/j.1468-2494.2009.00533_2.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ma J, Qi W, Ren D, Duan Y, Qiao R, Guo Y, Yang Z, Li L, Milan D, Ren J, Huang L. A genome scan for quantitative trait loci affecting three ear traits in a White Duroc × Chinese Erhualian resource population. Anim Genet 2009; 40:463-7. [DOI: 10.1111/j.1365-2052.2009.01867.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ren D, Chen W, Liu CH, Fu X. Identity processing in multiple-face tracking. J Vis 2009; 9:18.1-15. [DOI: 10.1167/9.5.18] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2008] [Accepted: 04/07/2009] [Indexed: 11/24/2022] Open
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Guo Y, Mao H, Ren J, Yan X, Duan Y, Yang G, Ren D, Zhang Z, Yang B, Ouyang J, Brenig B, Haley C, Huang L. A linkage map of the porcine genome from a large-scale White Duroc × Erhualian resource population and evaluation of factors affecting recombination rates. Anim Genet 2009; 40:47-52. [DOI: 10.1111/j.1365-2052.2008.01802.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Du JF, Yang SQ, Ren D, Zhang RQ, Huang NK. Effect of Cu pre-deposition on the interface structure between the C-SiC coatings and stainless steel. SURF INTERFACE ANAL 2008. [DOI: 10.1002/sia.2892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Fu W, Lan H, Li S, Han X, Gao T, Ren D. Synergistic antitumor efficacy of suicide/ePNP gene and 6-methylpurine 2'-deoxyriboside via Salmonella against murine tumors. Cancer Gene Ther 2008; 15:474-84. [PMID: 18437183 DOI: 10.1038/cgt.2008.19] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Some anaerobes and facultative anaerobes have been used in tumor-specific gene therapy by reason of their selective growth in tumors. In this work, we aimed to evaluate the anticancer efficacy of attenuated Salmonella typhimurium as a carrier to deliver the Escherichia coli purine nucleoside phosphorylase (ePNP) gene for GDEPT (gene-directed enzyme-prodrug therapy). A live attenuated purine-auxotrophic strain of S. typhimurium (SC36) was used to carry the pEGFP-C1-ePNP vector that contains a green fluorescent protein (GFP) and an ePNP gene under the control of the human cytomegalovirus (CMV) promoter. The function of the ePNP expression vector was confirmed in vitro using the enzymic conversion of 6-methylpurine 2'-deoxyriboside (MePdR) into 6-methylpurine. We also observed a high bystander effect induced by the ePNP/MePdR system with a very low proportion (1%) of ePNP-positive cells. The killing effect and increased apoptosis induced by SC/ePNP (SC36 carrying the ePNP expression vector) infection were detected by cytotoxicity assay and PI staining flow cytometry analysis, in combination with MePdR administration. Furthermore, SC/ePNP was administered orally into mice bearing melanomas or pulmonary tumors, and its anti-tumor effect was evaluated. When the tumor was huge (500 mm(3)) at the beginning of MePdR administration, SC/ePNP plus MepdR significantly inhibited tumor growth by about 59-80% and prolonged survival of mice. Complete tumor regression and long-term cure were achieved by MePdR administration, even when the tumor was large (100 mm(3)) at the beginning of MePdR treatment. Our data support a hopeful view that tumor-targeting SC36 could improve antitumor efficacy of the ePNP/MePdR system due to its preferential accumulation and anticancer activity in tumors.
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Affiliation(s)
- W Fu
- State Key Lab of Genetic Engineering, Department of Genetics, Fudan University, Shanghai, China
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41
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DeVito Dabbs A, Dew M, Myers B, Hawkins R, Ren D, Begey A, Zomak R, Lo Coco K, McCurry K. 412: A Randomized Controlled Trial of Pocket PATH Versus Standard Care on Self-Care Behaviors after Lung Transplant. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Ren D, Du JF, Zhang RQ, Yang SQ, Huang NK. Study in the effect of annealing on hydrogen retention properties of C-90%SiC films. SURF INTERFACE ANAL 2008. [DOI: 10.1002/sia.2785] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ren D, Sun R, Wang S. Role of inducible nitric oxide synthase expressed by alveolar macrophages in high mobility group box 1--induced acute lung injury. Inflamm Res 2006; 55:207-15. [PMID: 16830108 DOI: 10.1007/s00011-006-0072-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE AND DESIGN The role of inducible nitric oxide synthase (iNOS) expressed by alveolar macrophages in acute lung injury induced by high mobility group box 1 (HMGB1) was explored. TREATMENTS Primary rat alveolar macrophages (PRAMs) were stimulated with HMGB1 to analyze iNOS expression. Alveolar macrophages and iNOS were inhibited by gadolinium chloride and 1400W in rats challenged by HMGB1 intratracheally. METHODS Western Blot was applied to assay iNOS expression in PRAMs. Indices for acute lung injury in rats were measured. Immunocytochemistry was used to localize iNOS in squarebronchoalveolar lavage (BAL) cells. The enzyme activities of iNOS and constitutive nitric oxide synthase (cNOS) for BAL cells were determined. RESULTS A time- and concentration-dependent response of iNOS expression in PRAMs to HMGB1 induction was observed. Intratracheal instillation of HMGB1 produced persistently exacerbated acute lung inflammation, induction of iNOS in alveolar macrophages and increased lung nitric oxide production in rats. Abrogation of iNOS or macrophages attenuated lung inflammation, nitric oxide in BAL fluid, and iNOS activity of BAL cells, but had no significant effect on cNOS activity of BAL cells in rats challenged by HMGB1. CONCLUSIONS Inducible nitric oxide synthase expressed by alveolar macrophages facilitates the development of HMGB1-induced acute lung injury.
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Affiliation(s)
- D Ren
- Department of Pathophysiology, Institute of Basic Medical Sciences, Peking Union Medical College & Chinese Academy of Medical Sciences, 5 Dong Dan San Tiao, Beijing, 100005, People's Republic of China.
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Wagner AK, Sokoloski JE, Ren D, Chen X, Khan AS, Zafonte RD, Michael AC, Dixon CE. Controlled cortical impact injury affects dopaminergic transmission in the rat striatum. J Neurochem 2005; 95:457-65. [PMID: 16190869 DOI: 10.1111/j.1471-4159.2005.03382.x] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The therapeutic benefits of dopamine (DA) agonists after traumatic brain injury (TBI) imply a role for DA systems in mediating functional deficits post-TBI. We investigated how experimental TBI affects striatal dopamine systems using fast scan cyclic voltammetry (FSCV), western blot, and d-amphetamine-induced rotational behavior. Adult male Sprague-Dawley rats were injured by a controlled cortical impact (CCI) delivered unilaterally to the parietal cortex, or were naïve controls. Amphetamine-induced rotational behavior was assessed 10 days post-CCI. Fourteen days post-CCI, animals were anesthetized and underwent FSCV with bilateral striatal carbon fiber microelectrode placement and stimulating electrode placement in the medial forebrain bundle (MFB). Evoked DA overflow was assessed in the striatum as the MFB was electrically stimulated at 60 Hz for 10 s. In 23% of injured animals, but no naïve animals, rotation was observed with amphetamine administration. Compared with naïves, striatal evoked DA overflow was lower for injured animals in the striatum ipsilateral to injury (p < 0.05). Injured animals exhibited a decrease in V(max) (52% of naïve, p < 0.05) for DA clearance in the hemisphere ipsilateral to injury compared with naïves. Dopamine transporter (DAT) expression was proportionally decreased in the striatum ipsilateral to injury compared with naïve animals (60% of naïve, p < 0.05), despite no injury-related changes in vesicular monoamine transporter or D2 receptor expression (DRD2) in this region. Collectively, these data appear to confirm that the clinical efficacy of dopamine agonists in the treatment of TBI may be related to disruptions in the activity of subcortical dopamine systems.
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Affiliation(s)
- A K Wagner
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pennsylvania 15213, USA.
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Abstract
Information theory is used to analyze the character of signal peptide quantitatively, especially residents. On the basis of the above analysis, a method named simplified information-matrix has been developed to predict the cleavage sites of signal peptides. A comparison between the results of weight-matrix and simplified information-matrix is presented.
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Affiliation(s)
- L Liu
- 2002 Master, Department of physics, School of Science, Tianjin University, P. R. China.
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Ren D, Bedzyk LA, Thomas SM, Ye RW, Wood TK. Gene expression in Escherichia coli biofilms. Appl Microbiol Biotechnol 2004; 64:515-24. [PMID: 14727089 DOI: 10.1007/s00253-003-1517-y] [Citation(s) in RCA: 288] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2003] [Revised: 10/31/2003] [Accepted: 11/21/2003] [Indexed: 10/26/2022]
Abstract
DNA microarrays were used to study the gene expression profile of Escherichia coli JM109 and K12 biofilms. Both glass wool in shake flasks and mild steel 1010 plates in continuous reactors were used to create the biofilms. For the biofilms grown on glass wool, 22 genes were induced significantly (p< or =0.05) compared to suspension cells, including several genes for the stress response ( hslS, hslT, hha, and soxS), type I fimbriae ( fimG), metabolism ( metK), and 11 genes of unknown function ( ybaJ, ychM, yefM, ygfA, b1060, b1112, b2377, b3022, b1373, b1601, and b0836). The DNA microarray results were corroborated with RNA dot blotting. For the biofilm grown on mild steel plates, the DNA microarray data showed that, at a specific growth rate of 0.05/h, the mature biofilm after 5 days in the continuous reactors did not exhibit differential gene expression compared to suspension cells although genes were induced at 0.03/h. The present study suggests that biofilm gene expression is strongly associated with environmental conditions and that stress genes are involved in E. coli JM109 biofilm formation.
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Affiliation(s)
- D Ren
- Departments of Chemical Engineering and Molecular and Cell Biology, University of Connecticut, 191 Auditorium Road, Storrs, CT 06269-3222, USA
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Zhang M, Ren D, Li X, Zhang J. Tumor necrosis factor expression in arterial walls of diabetic rats. J Tongji Med Univ 2003; 19:203-5. [PMID: 12840894 DOI: 10.1007/bf02887734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Immunohistochemistry was used to detect tumor necrosis factor (TNF-alpha) expression in arterial wall of diabetic rats. It was found that endothelial cells were swollen and markedly proliferative in these vessels and accordingly TNF-alpha showed strong positive immunohistochemical reaction in endothelial cells or extracellular intimal matrix of such vessels, which might be caused by the expression and release of TNF-alpha from monocytes and arterial wall cells stimulated by AGEs. These findings suggested that increased TNF-alpha expression might be associated with vascular damage and remodeling in diabetes.
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Affiliation(s)
- M Zhang
- Department of Endocrinology, Tongji Hospital, Tongji Medical University, Wuhan 430030
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Liu D, Cai X, Ren D, Liu R, Lin S, Zeng L, Tang X. [Changes in chloroquine resistance of Plasmodium falciparum in Hainan province]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 17:32-4. [PMID: 12563813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
AIM To observe the variation in resistance of Plasmodium falciparum after the cessation of chloroquine medication. METHODS WHO standard in vitro microtest and in vivo test were used. RESULTS In vitro test showed that the rate of chloroquine-resistant P. falciparum dropped from 97.9% in 1981 to 26.7% in 1997 (P < 0.001). The mean concentration of chloroquine for complete inhibition of schizont formation declined from 10.46 +/- 7.14 pmol/ul blood in 1981 to 1.63 +/- 1.47 pmol/microliter blood in 1997(P < 0.001). In vivo test showed that the rate of chloroquine-resistant P. falciparum decreased from 84.2% in 1981 to 18.4% in 1997(P < 0.001). The proportion of R III cases to the total resistant cases dropped from 53.1% in 1981 to 14.3% in 1997. CONCLUSION A tendency of progressive decline of resistance of the parasite was revealed after the cessation of chloroquine medication.
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Affiliation(s)
- D Liu
- Institute of Parasitic Diseases, Chinese Academy of Preventive Medicine, Shanghai 200025
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Gerdin MJ, Masana MI, Ren D, Miller RJ, Dubocovich ML. Short-term exposure to melatonin differentially affects the functional sensitivity and trafficking of the hMT1 and hMT2 melatonin receptors. J Pharmacol Exp Ther 2003; 304:931-9. [PMID: 12604667 DOI: 10.1124/jpet.102.044990] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The hormone melatonin mediates a variety of physiological functions in mammals through activation of pharmacologically distinct MT(1) and MT(2) G protein-coupled melatonin receptors. We therefore sought to investigate how the receptors were regulated in response to short melatonin exposure. Using 2-[(125)I]iodomelatonin binding, cAMP functional assays, and confocal microscopy, we demonstrated robust differences in specific 2-[(125)I]iodomelatonin binding, receptor desensitization, and cellular trafficking of hMT(1) and hMT(2) melatonin receptors expressed in Chinese hamster ovary (CHO) cells after short (10-min) exposure to melatonin. Exposure to melatonin decreased specific 2-[(125)I]iodomelatonin binding to CHO-MT(2) cells (70.3 +/- 7.6%, n = 3) compared with vehicle controls. The robust decreases in specific binding to the hMT(2) melatonin receptors correlated both with the observed functional desensitization of melatonin to inhibit forskolin-stimulated cAMP formation in CHO-MT(2) cells pretreated with 10 nM melatonin (EC(50) of 159.8 +/- 17.8 nM, n = 3, p < 0.05) versus vehicle (EC(50) of 6.0 +/- 1.2 nM, n = 3), and with the arrestin-dependent internalization of the receptor. In contrast, short exposure of CHO-MT(1) cells to melatonin induced a small decrease in specific 2-[(125)I]iodomelatonin binding (34.2 +/- 13.0%, n = 5) without either desensitization or receptor internalization. We conclude that differential regulation of the hMT(1) and hMT(2) melatonin receptors by the hormone melatonin could underlie temporally regulated signal transduction events mediated by the hormone in vivo.
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Affiliation(s)
- M J Gerdin
- Department of Molecular Pharmacology and Biological Chemistry, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611-3008, USA
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Abstract
AIMS (5Z)-4-Bromo-5-(bromomethylene)-3-butyl-2(5H)-furanone(furanone) of the marine alga Delisea pulchra was synthesized, and its inhibition of swarming motility and biofilm formation of Bacillus subtilis was investigated. METHODS AND RESULTS Furanone was found to inhibit both the growth of B. subtilis and its swarming motility in a concentration-dependent way. In addition, as shown by confocal scanning laser microscopy, furanone inhibited the biofilm formation of B. subtilis. At 40 microg ml(-1), furanone decreased the biofilm thickness by 25%, decreased the number of water channels, and reduced the percentage of live cells by 63%. CONCLUSIONS, SIGNIFICANCE AND IMPACT OF THE STUDY Natural furanone has potential for controlling the multicellular behaviour of Gram-positive bacteria.
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Affiliation(s)
- D Ren
- Department of Chemical Engineering and Molecular & Cellular Biology, University of Connecticut, Storrs 06269-3222, USA
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