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Ma D, Ma J, Zhao C, Tai W. Reasons why women are more likely to develop primary biliary cholangitis. Heliyon 2024; 10:e25634. [PMID: 38384574 PMCID: PMC10878884 DOI: 10.1016/j.heliyon.2024.e25634] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/23/2024] Open
Abstract
Primary biliary cholangitis (PBC) is a chronic autoimmune disease of biliary stasis in which immune factors cause the gradual destruction of small bile ducts, biliary stasis, and eventually the development of liver fibrosis, cirrhosis, and even liver failure. One of the main characteristics of PBC is that it primarily affects middle-aged women, but the precise cause is still unknown. This article analyzes the unique causes and mechanisms of the female predominance of PBC and summarizes the potential causes.The female domination of PBC is reported to be primarily caused by sex hormones, environmental circumstances, and epigenetic changes, each of which has a different subtle impact on patients' gender disparities.
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Affiliation(s)
- Di Ma
- Clinical Laboratory Department, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jiaxuan Ma
- Clinical Laboratory Department, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chunmei Zhao
- Clinical Laboratory Department, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wenlin Tai
- Clinical Laboratory Department, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
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Lei W, Yang M, Yuan Z, Feng R, Kuang X, Liu Z, Deng Z, Hu X, Tai W. The causal relationship between physical activity, sedentary time and idiopathic pulmonary fibrosis risk: a Mendelian randomization study. Respir Res 2023; 24:291. [PMID: 37986064 PMCID: PMC10658800 DOI: 10.1186/s12931-023-02610-3] [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: 09/11/2023] [Accepted: 11/15/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND Several observational studies have found that physical inactivity and sedentary time are associated with idiopathic pulmonary fibrosis (IPF) risk. However, the causality between them still requires further investigation. Therefore, our study aimed to investigate the causal effect of physical activity (PA) and sedentary time on the risk of IPF via two-sample Mendelian randomization (MR) analysis. METHODS Multiple genome-wide association study (GWAS) data involving individuals of European ancestry were analyzed. The datasets encompassed published UK Biobank data (91,105-377,234 participants) and IPF data (2018 cases and 373,064 controls) from FinnGen Biobank. The inverse variance weighting (IVW) method was the primary approach for our analysis. Sensitivity analyses were implemented with Cochran's Q test, MR-Egger regression, MR-PRESSO global test, and leave-one-out analysis. RESULTS Genetically predicted self-reported PA was associated with lower IPF risk [OR = 0.27; 95% CI 0.09-0.82; P = 0.02]. No causal effects of accelerometry-based PA or sedentary time on the risk of IPF were observed. CONCLUSIONS Our findings supported a protective relationship between self-reported PA and the risk for IPF. The results suggested that enhancing PA may be an effective preventive strategy for IPF.
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Affiliation(s)
- Wanyang Lei
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Mei Yang
- Department of Respiratory and Critical Care, Yunnan Second People's Hospital, Kunming, Yunnan Province, China
| | - Ziyu Yuan
- Department of Clinical Laboratory Medicine, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Yunnan Cancer Center, Kunming, 650118, China
| | - Runlin Feng
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Xiao Kuang
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhiqiang Liu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zongqi Deng
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Xianglin Hu
- Department of Thoracic Surgery I, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
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Zhu H, Zheng M, He H, Lei H, Tai W, Yang J. High neutrophil-lymphocyte ratio indicates a worse response to ursodeoxycholic acid in primary biliary cholangitis: a retrospective cohort study. BMC Gastroenterol 2023; 23:400. [PMID: 37978445 PMCID: PMC10657125 DOI: 10.1186/s12876-023-03031-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 11/05/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Primary biliary cholangitis (PBC) is a chronic cholestatic liver disease characterized by inflammation of the interlobular bile ducts. Ursodeoxycholic acid (UDCA) is the only FDA approved first-line therapy for PBC, but up to 40% of patients with PBC have an incomplete response to UDCA. Neutrophil-to-lymphocyte (NLR) has been used to predict prognosis in various liver diseases. There is limited evidence on the treatment response to UDCA in PBC patients. Our study aimed to evaluate the relationship between NRL and the response to UDCA treatment in PBC patients. METHODS A total of 257 primary biliary cholangitis (PBC) patients treated with UDCA (13-15 mg/kg/d) were enrolled in this retrospective study. The response to treatment was evaluated based on alkaline phosphatase levels ≤1.67 times the upper limit of the normal value after 12 months of UDCA treatment. Multivariable logistic regression analysis was performed to investigate the association between NLR at baseline and the response to 12 months of UDCA treatment after adjusting for important confounding variables. The stability of the results was evaluated by unadjusted and adjusted models. RESULTS The results of multiple regression analysis showed that NLR at baseline was positively associated with the nonresponse to UDCA treatment after adjustments for potential confounders (age, sex, BMI, hypertension, arterial plaque, thyroid disease, jaundice, albumin, globulin, total bile acid, ALP, GGT, LDLC, total cholesterol, hemoglobin, and APTT) (OR = 1.370, 95% CI 1.066-1.761). These results reveal that NLR is an independent risk factor for UDCA treatment nonresponse. CONCLUSIONS Our results suggest that PBC patients with a high NLR had a worse response to UDCA therapy.
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Affiliation(s)
- Huiling Zhu
- Department of Gastroenterology, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Mengyao Zheng
- Department of Gastroenterology, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Haiyu He
- Department of Gastroenterology, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Hongtao Lei
- School of Public Health Kunming Medical University, Kunming, China
| | - Wenlin Tai
- Clinical Lab, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jinhui Yang
- Department of Gastroenterology, Second Affiliated Hospital of Kunming Medical University, Kunming, China.
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Xu M, Yu J, Liu X, Jia W, Duan Y, Ma D, Ma J, Lei W, Tai W. METTL3 regulatory TROAP can regulate the progression of non-small cell lung cancer through PI3K/AKT and EMT signaling pathway. Med Oncol 2023; 40:274. [PMID: 37608033 DOI: 10.1007/s12032-023-02143-1] [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: 04/18/2023] [Accepted: 07/29/2023] [Indexed: 08/24/2023]
Abstract
TROAP, interacts with trophinin and bystin, polys a key role in embryo implantation. TROAP is required for spindle assembly and centrosome integrity during the mitosis. TROAP has been described to promote tumorigenesis in a diverse range of cancer. We performed this study to assess the biological and clinical significance of TROAP in Non-small cell lung cancer. Forty-eight pairs of lung adenocarcinoma (LUAD) tissues and paraneoplastic tissues were collected. RT-qPCR, western bolt and immunohistochemistry assay was used to test TROAP RNA and protein expression not in LUAD tissues and paraneoplastic tissues but in LUAD cell lines and control cell lines. TROAP knockdown and overexpression vector were constructed and transfected into lung cancer cells. CCK-8, transwell, and wound healing assays were used to assess cell viability, migration, and invasion. The expression of PI3K/AKT and EMT signaling proteins and METTL3 were determined by western blot. We found the TROAP was enriched in NSCLC tissues and cell lines. TROAP knockdown inhibited cell proliferation, migration, invasion compared with control group in NSCLC. Mechanism analysis revealed that TROAP activated PI3K/AKT and EMT signaling pathway. To a certain extent, TROAP was regulated by METTL3. In a word, TROAP accelerated the progression of NSCLC through PI3K/AKT and EMT pathway, and TROAP might be considered as a novel target for NSCLC therapy.
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Affiliation(s)
- Muli Xu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jiankun Yu
- Chinese Academy of Medical Sciences and Institute of Medical Biology, Peking Union Medical College, Kunming, China
| | - Xiaoxiao Liu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wanting Jia
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yu Duan
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Di Ma
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jiaxuan Ma
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wanyang Lei
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
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Liu X, Xu M, Jia W, Duan Y, Ma J, Tai W. PU.1 negatively regulates tumorigenesis in non-small-cell lung cancer. Med Oncol 2023; 40:79. [PMID: 36648591 DOI: 10.1007/s12032-023-01946-6] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/27/2022] [Indexed: 01/18/2023]
Abstract
PU.1 is a key transcription factor that modulates hematopoietic cell differentiation and is involved in various physiological and pathological processes. PU.1 has been described to have multiple roles in a diverse range of cancers, but its contribution in non-small-cell lung cancer (NSCLC) has not been clearly elucidated. Fifty pairs of lung adenocarcinoma (LUAD) tissues and paraneoplastic tissues were collected. RT-qPCR assay was used to test PU.1 expression. Expression of PU.1 in LUAD cell lines and control cell lines was detected by RT-qPCR, and the role of PU.1 in LUAD was investigated by in vitro experiment. Levels of the major proteins in the apoptotic pathway were also detected by Western blot. The expression of PU.1 was remarkably downregulated in LUAD. Overexpression of PU.1 impaired the viability of LUAD cells as well as their metastatic function. In addition, PU.1 promoted apoptosis of LUAD cells by decreasing Bcl2 and increasing Bax/Bak1 expression. PU.1 plays an inhibitory role in LUAD, mainly promoting the apoptosis of LUAD cells.
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Affiliation(s)
- Xiaoxiao Liu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Muli Xu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wanting Jia
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yu Duan
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jiaxuan Ma
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
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Yang M, Yin E, Xu Y, Liu Y, Li T, Dong Z, Tai W. CDKN2B antisense RNA 1 expression alleviates idiopathic pulmonary fibrosis by functioning as a competing endogenouse RNA through the miR-199a-5p/Sestrin-2 axis. Bioengineered 2022; 13:7746-7759. [PMID: 35291918 PMCID: PMC9208479 DOI: 10.1080/21655979.2022.2044252] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is an idiopathic interstitial lung disease. At present, the pathogenesis of IPF has not been fully elucidated, which has affected the development of effective treatment methods. Here, we explored the function and potential mechanism of long noncoding RNA (lncRNA) CDKN2B antisense RNA 1 (CDKN2B-AS1) in IPF.Transforming growth factor-β (TGF-β) and bleomycin (BLM) were used to induce IPF in cells and animal models. Real Time quantitative Polymerase Chain Reaction (RT-qPCR) showed the expression of CDKN2B-AS1, miR-199a-5p and Sestrin-2 (SESN2) in cells and tissues. The double luciferase reporter gene assay confirmed the targeting relationship among CDKN2B-AS1, miR-199a-5p, and SESN2. Related protein levels were detected by Western blot combined with Cell Counting Kit-8 (CCK-8), wound healing, and flow cytometry to analyze cell proliferation, migration, and apoptosis. The pathological characteristics of mouse lung tissue were determined by Hematoxylin-eosin (HE) and Masson staining. We found that the expression of CDKN2B-AS1 was decreased in TGF-β-treated cells and BLM-treated mice. Overexpression of CDKN2B-AS1 inhibited cell proliferation and migration, promoted apoptosis, decreased the expression of fibrosis-related proteins and promoted autophagy. In addition, overexpression of CDKN2B-AS1 alleviated pulmonary fibrosis in BLM-treated mice. Mechanistically, CDKN2B-AS1 acts as a miR-199a-5p sponge to regulate SESN2 expression. Our results indicate the importance of the CDKN2B-AS1/miR-199a-5p/SESN2 axis.
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Affiliation(s)
- Mei Yang
- Department of Respiration, The Sencond Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.,Department of Respiratory and Critical Care, Affiliated Hospital of Yunnan University, Kunming, Yunnan, China
| | - Egao Yin
- Department of Respiration, The Sencond Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yiheng Xu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, the Sencond Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yongjun Liu
- Department of Respiration, The Sencond Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ting Li
- Department of Respiration, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China.,Department of Respiration, Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China
| | - Zhaoxing Dong
- Department of Respiration, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China.,Department of Respiration, Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, the Sencond Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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Fang Y, Baloch Z, Zhang W, Hu Y, Zheng R, Song Y, Tai W, Xia X. Emergence of Carbapenem-Resistant ST244, ST292, and ST2446 Pseudomonas aeruginosa Clones in Burn Patients in Yunnan Province. Infect Drug Resist 2022; 15:1103-1114. [PMID: 35321081 PMCID: PMC8935738 DOI: 10.2147/idr.s353130] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 03/08/2022] [Indexed: 12/13/2022] Open
Abstract
Introduction The prevalence of carbapenem-resistant Pseudomonas aeruginosa is increasing persistently, particularly in burn ward isolates. Here, we investigate the prevalence of carbapenem-resistant Pseudomonas aeruginosa in a burn ward of a provincial-level hospital at Kunming, Yunnan province, China. Methods A total of 118 P. aeruginosa strains were isolated from 57 hospitalized patients, and their MICs were measured. Carbapenem-resistant isolates were selected for multilocus sequence typing (MLST). Carbapenem-resistance mechanisms were identified by examining carbapenemase genes and OprD protein and Carba-NP testing. Representative isolates were further characterized by de novo sequencing for carbapenemase molecular background. Results Among 118 P. aeruginosa isolates, 54 (54/118,45.8%) were carbapenem-resistant Pseudomonas aeruginosa, and 3 genotypes were found (ST292, ST244, and ST2446). Non-carbapenemase-producing ST292 was the most prevalent ST, followed by ST2446 and ST244. A novel 13-bp oprD deletion was found in the ST292 clone, which formed the truncated outer membrane protein and may cause carbapenem resistance. ST244 and ST2446 harbored blaIMP-45 and blaIMP-87, respectively. blaIMP-45 is located in a megaplasmid, together with aac(6’)-Ib3, blaOXA-1, catB3, qnrVC6, armA, msr(E), mph(E), aph(3’)-Ia, tetC/tetR, aac(6’)-Ib3, floR, mexC-mexD-oprJ, fosA and lead to extensive drug resistance. ST2446 contains a carbapenem-resistant gene blaIMP-87 on the chromosome and is acquired by a novel gene cassette array (blaIMP-87-ant(2”)-Ia-blaOXA-10-aac(6’)-Ib3) of class 1 integron. Discussion For the first time, ST244, ST292 and ST2446 are reported emerging in burn patients, with distinctive carbapenem-resistance mechanisms, respectively. The obtained results highlight the need to surveillance carbapenem-resistant isolates in burn patients.
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Affiliation(s)
- Yue Fang
- The Affiliated AnNing First Hospital & Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650500, People’s Republic of China
| | - Zulqarnain Baloch
- The Affiliated AnNing First Hospital & Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650500, People’s Republic of China
| | - Wei Zhang
- The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, People’s Republic of China
| | - Ying Hu
- The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, People’s Republic of China
| | - Rui Zheng
- The First Hospital of Yunnan Province & The Affiliated Hospital, Kunming University of Science and Technology, Kunming, Yunnan, 650034, People’s Republic of China
| | - Yuzhu Song
- The Affiliated AnNing First Hospital & Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650500, People’s Republic of China
- Correspondence: Yuzhu Song; Xueshan Xia, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650500, People’s Republic of China, Tel +86-871-65920756, Fax +86-871-65920570, Email ;
| | - Wenlin Tai
- The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, People’s Republic of China
| | - Xueshan Xia
- The Affiliated AnNing First Hospital & Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650500, People’s Republic of China
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Tai W, Leung Y, Li D. Le Fort I osteotomy with segmentation for the treatment of maxillary dentoalveolar protrusion: a single-centre, 10-year outcome study. Int J Oral Maxillofac Surg 2022; 51:1197-1204. [DOI: 10.1016/j.ijom.2022.01.012] [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] [Received: 08/02/2021] [Revised: 11/03/2021] [Accepted: 01/19/2022] [Indexed: 11/24/2022]
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Yang Y, Tai W, Lu N, Li T, Liu Y, Wu W, Li Z, Pu L, Zhao X, Zhang T, Dong Z. lncRNA ZFAS1 promotes lung fibroblast-to-myofibroblast transition and ferroptosis via functioning as a ceRNA through miR-150-5p/SLC38A1 axis. Aging (Albany NY) 2020; 12:9085-9102. [PMID: 32453709 PMCID: PMC7288977 DOI: 10.18632/aging.103176] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [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: 09/24/2019] [Accepted: 03/02/2020] [Indexed: 02/07/2023]
Abstract
Pulmonary fibrosis (PF) is a lethal fibrotic lung disease. The role of lncRNAs in multiple diseases has been confirmed, but the role and mechanism of lncRNA zinc finger antisense 1 (ZFAS1) in the progression of PF need to be elucidated further. Here, we found that lncRNA ZFAS1 was upregulated in bleomycin (BLM)-induced PF rats lung tissues and transforming growth factor-β1 (TGF-β1)-treated HFL1 cells, and positively correlated with the expression of solute carrier family 38 member 1 (SLC38A1), which is an important regulator of lipid peroxidation. Moreover, knockdown of lncRNA ZFAS1 significantly alleviated TGF-β1-induced fibroblast activation, inflammation and lipid peroxidation. In vivo experiments showed that inhibition of lncRNA ZFAS1 abolished BLM-induced lipid peroxidation and PF development. Mechanistically, silencing of lncRNA ZFAS1 attenuated ferroptosis and PF progression by lncRNA ZFAS1 acting as a competing endogenous RNA (ceRNA) and sponging miR-150-5p to downregulate SLC38A1 expression. Collectively, our studies demonstrated the role of the lncRNA ZFAS1/miR-150-5p/SLC38A1 axis in the progression of PF, and may provide a new biomarker for the treatment of PF patients.
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Affiliation(s)
- Yanni Yang
- Department of Ophthalmology, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Nihong Lu
- Department of Respiratory, The Third People's Hospital of Kunming, Kunming 650041, Yunnan, China
| | - Ting Li
- Department of Respiratory, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Yongjun Liu
- Department of Respiratory, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Wenjuan Wu
- Department of Respiratory, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Zhengkun Li
- Department of Respiratory, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Lin Pu
- Department of Respiratory, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Xiaoyuan Zhao
- Department of Respiratory, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Tao Zhang
- Department of Respiratory, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
| | - Zhaoxing Dong
- Department of Respiratory, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, Yunnan, China
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Yao J, Zhang J, Tai W, Deng S, Li T, Wu W, Pu L, Fan D, Lei W, Zhang T, Dong Z. High-Dose Paraquat Induces Human Bronchial 16HBE Cell Death and Aggravates Acute Lung Intoxication in Mice by Regulating Keap1/p65/Nrf2 Signal Pathway. Inflammation 2019; 42:471-484. [PMID: 30734183 PMCID: PMC6449493 DOI: 10.1007/s10753-018-00956-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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] [Indexed: 01/28/2023]
Abstract
Paraquat (PQ) intoxication seriously endangers human beings’ health, however, the underlying mechanisms are still unclear. Here we found that PQ inhibits human bronchial 16HBE cell proliferation and promotes cell apoptosis, necrosis as well as ROS generation in a dose dependent manner. Of note, low-dose PQ (50 μM) induces cell autophagy, increases Nrf2 as well as p65 levels and has little impacts on Keap1, while high-dose PQ (500 μM) inhibits autophagy, upregulates Keap1 as well as downregulates p65 and Nrf2. In addition, we verified that p65 overexpression increases Nrf2 and its downstream targets in 16HBE cells, which are reversed by synergistically knocking down Nrf2. Our further results showed that high-dose PQ’s effects on cell proliferation, apoptosis, ROS levels and autophagy are reversed by p65 overexpression. Besides, the protective effects of overexpressed p65 on high-dose PQ (500 μM) treated 16HBE cells are abrogated by synergistically knocking down Nrf2. In vivo experiments also showed that high-dose PQ promotes inflammatory cytokines secretion, lung fibrosis and cell apoptosis, inhibits cell proliferation in mice models by regulating Keap1/p65/Nrf2 signal pathway. Therefore, we concluded that high-dose PQ (500 μM) inhibits 16HBE cell proliferation and autophagy, promotes cell death and mice lung fibrosis by regulating Keap1/p65/Nrf2 signal pathway.
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Affiliation(s)
- Jiexiong Yao
- Department of Internal Medicine Ward 5, Guangdong Provincial Corps Hospital of Chinese People's Armed Police Forces, Guangzhou Medical University, Guangzhou, Guangdong, 510507, People's Republic of China
| | - Jihua Zhang
- Department of Pulmonary and Critical Care Medicine, The People Hospital of Yuxi City, Yuxi, China
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road, Kunming, Yunnan, China
| | - Shuhao Deng
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, 650101, Yunnan, China
| | - Ting Li
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, 650101, Yunnan, China
| | - Wenjuan Wu
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, 650101, Yunnan, China
| | - Lin Pu
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, 650101, Yunnan, China
| | - Du Fan
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, 650101, Yunnan, China
| | - Wen Lei
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, 650101, Yunnan, China
| | - Tao Zhang
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, 650101, Yunnan, China
| | - Zhaoxing Dong
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, 650101, Yunnan, China.
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11
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Tai W, Deng S, Wu W, Li Z, Lei W, Wang Y, Vongphouttha C, Zhang T, Dong Z. Rapamycin attenuates the paraquat-induced pulmonary fibrosis through activating Nrf2 pathway. J Cell Physiol 2019; 235:1759-1768. [PMID: 31301076 PMCID: PMC6899830 DOI: 10.1002/jcp.29094] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 05/18/2018] [Accepted: 06/27/2019] [Indexed: 12/16/2022]
Abstract
Oxidative stress is a key regulator of idiopathic pulmonary fibrosis. Paraquat (PQ)‐induced pulmonary fibrosis seriously endangers people's health. Rapamycin has been reported to alleviate PQ‐induced pulmonary fibrosis, but its underlying mechanism is unclear. The nuclear factor E2‐related factor 2 (Nrf2) plays an important regulatory role in the antioxidant therapy of PQ‐induced pulmonary fibrosis. In this study, we tried to confirm that rapamycin attenuates PQ‐induced pulmonary fibrosis by regulating Nrf2 pathway. In vivo, we proved that rapamycin could inhibit the degree of PQ‐induced oxidant stress as well as enhanced the expression of Nrf2. In vitro, rapamycin decreased the upregulated effects of cell death and apoptosis, fibrosis‐related factors expression and fibroblast‐to‐myofibroblast transformation by PQ treatment. In vivo, rapamycin treatment reduced fibrosis degree and the expression of fibrosis‐related factors in lung tissues of rat treated PQ. Furthermore, we also found that Nrf2 knockdown reduced the inhibitory effect of rapamycin on PQ‐induced pulmonary fibrosis, as well as decreased Nrf2 transfer from the cytoplasm into the nucleus. Our findings demonstrated that the protective effect of rapamycin is associated with the activation of the Nrf2 pathway in pulmonary fibrosis induced by PQ poisoning.
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Affiliation(s)
- Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Shuhao Deng
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wenjuan Wu
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - ZhenKun Li
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wen Lei
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yin Wang
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Chanthasone Vongphouttha
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Tao Zhang
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhaoxing Dong
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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12
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Tai W, Zhou Z, Zheng B, Li J, Ding J, Wu H, Gao L, Dong Z. Inhibitory effect of circulating fibrocytes on injury repair in acute lung injury/acute respiratory distress syndrome mice model. J Cell Biochem 2018; 119:7982-7990. [PMID: 29323734 DOI: 10.1002/jcb.26664] [Citation(s) in RCA: 3] [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: 10/05/2017] [Accepted: 01/09/2018] [Indexed: 11/06/2022]
Abstract
The study was aimed to explore the functions of circulating fibrocytes (CFs) on injury repair in acute lung injury/acute respiratory distress syndrome (ALI/ARDS) mice model and its clinical value as a biomarker for ALI/ARDS. ALI/ARDS mice model was established by intratracheal instillation of lipopolysaccharide (LPS). Mononuclear cells were isolated from peripheral blood of ALI/ARDS model and flow cytometry was used to measure CFs defined as cells positive for CD45 and collagen-1. Histological changes of lung tissues were evaluated by H&E staining and Masson's trichrome staining. The correlations of CFs counts with damnification of lung tissue and the severity of pulmonary fibrosis were evaluated by Pearson correlation analyses. Western blot was used to detect the protein expression of collagen-1. ELISA was applied to determine cytokine CXCL12 concentration. Clinical relevance between CFs and ALI/ARDS was investigated. The greater number of CFs in the ALI/ARDS group implied higher degree of lung injury and more severe pulmonary fibrosis. The protein expression of collagen-1 and concentration of cytokine CXCL12 in ALI/ARDS group were higher than that in control group. Clinical and prognostic analysis revealed the higher injury degree and death rates in ALI/ARDS group than those in control group, and identified a greater severity and mortality for patients with ARDS than those with ALI. ROC curve analysis indicated the counts of CFs greater than 5.85% can predict death rates with AUC = 0.928. CFs had an inhibitory effect on injury repair in ALI/ARDS mice model. This might be unfavorable as a clinical marker for progression of ALI/ARDS.
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Affiliation(s)
- Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zeping Zhou
- Department of Hematology, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Boyang Zheng
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jinyu Li
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jiawei Ding
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Hanxin Wu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ling Gao
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhaoxing Dong
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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13
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Zhang L, Wei Q, Han Q, Chen Q, Tai W, Zhang J, Song Y, Xia X. Detection of Shigella in Milk and Clinical Samples by Magnetic Immunocaptured-Loop-Mediated Isothermal Amplification Assay. Front Microbiol 2018; 9:94. [PMID: 29467730 PMCID: PMC5807921 DOI: 10.3389/fmicb.2018.00094] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 09/24/2017] [Accepted: 01/16/2018] [Indexed: 11/22/2022] Open
Abstract
Shigella is an important human food-borne zoonosis bacterial pathogen, and can cause clinically severe diarrhea. There is an urgent need to develop a specific, sensitive, and rapid methodology for detection of this pathogen. In this study, loop-mediated isothermal amplification (LAMP) combined with magnetic immunocapture assay (IC-LAMP) was first developed for the detection of Shigella in pure culture, artificial milk, and clinical stool samples. This method exhibited a detection limit of 8.7 CFU/mL. Compared with polymerase chain reaction, IC-LAMP is sensitive, specific, and reliable for monitoring Shigella. Additionally, IC-LAMP is more convenient, efficient, and rapid than ordinary LAMP, as it is more efficiently enriches pathogen cells without extraction of genomic DNA. Under isothermal conditions, the amplification curves and the green fluorescence were detected within 30 min in the presence of genomic DNA template. The overall analysis time was approximately 1 h, including the enrichment and lysis of the bacterial cells, a significantly short detection time. Therefore, the IC-LAMP methodology described here is potentially useful for the efficient detection of Shigella in various samples.
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Affiliation(s)
- Liding Zhang
- Molecular Medicine Research Center of Yunnan Province, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | | | - Qinqin Han
- Molecular Medicine Research Center of Yunnan Province, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Qiang Chen
- Molecular Medicine Research Center of Yunnan Province, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Wenlin Tai
- Yunnan Molecular Diagnosis Centre, The Second Affiliation Hospital of Kunming Medical University, Kunming, China
| | - Jinyang Zhang
- Molecular Medicine Research Center of Yunnan Province, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Yuzhu Song
- Molecular Medicine Research Center of Yunnan Province, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Xueshan Xia
- Molecular Medicine Research Center of Yunnan Province, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
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Vongphouttha C, Zhu J, Deng S, Tai W, Wu W, Li Z, Lei W, Wang Y, Dong Z, Zhang T. Rapamycin protects against paraquat-induced pulmonary epithelial-mesenchymal transition via the Wnt/β-catenin signaling pathway. Exp Ther Med 2018; 15:3045-3051. [PMID: 29599839 DOI: 10.3892/etm.2018.5795] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 08/06/2017] [Accepted: 11/17/2017] [Indexed: 12/26/2022] Open
Abstract
Paraquat (PQ) is a herbicide that is widely used in developing countries, and pulmonary fibrosisis one of the most typical features of PQ poisoning. The molecular mechanism underlying PQ toxicity is largely unknown, which makes it difficult to treat. In the present study, western blot analysis, reverse transcription-quantitative polymerase chain reaction and fluorescent immunostaining were used to analyze the effects of rapamycin on PQ-induced epithelial-mesenchymal transition (EMT) in A549 and MRC-5 cells. It was revealed that rapamycin significantly downregulated the mesenchymal cell marker, α-smooth muscle actin, and significantly upregulated the epithelial cell marker, E-cadherin, at mRNA and protein expression levels compared with the PQ group. Treatment with PQ significantly increased Wnt1, low-density lipoprotein receptor-related protein (LRP)5, LRP6 and β-catenin expression levels in A549 cells, while rapamycin significantly inhibited these effects of PQ. Activation of the Wnt signaling pathway using lithium chloride attenuated the inhibitory effects of rapamycin on PQ-induced EMT. In conclusion, rapamycin protects against PQ-induced pulmonary EMT via the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Chanthasone Vongphouttha
- Department of Respiratory Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Jie Zhu
- Department of Internal Medicine, Beijing Capital International Airport Hospital, Beijing 100621, P.R. China
| | - Shuhao Deng
- Department of Respiratory Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Wenjuan Wu
- Department of Respiratory Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Zhenkun Li
- Department of Respiratory Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Wen Lei
- Department of Respiratory Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Yin Wang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Zhaoxing Dong
- Department of Respiratory Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Tao Zhang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
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Tai W, Xu Y, Ding J, Wu H, Du M, Qu X, Gao L, Li J, Dong Z. Fibrocytes Ameliorate Acute Lung Injury by Decreasing Inflammatory Cytokine and Chemokine Levels and Reducing Neutrophil Accumulation in the Lung. Cell Physiol Biochem 2017; 44:1526-1536. [DOI: 10.1159/000485647] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 10/12/2017] [Indexed: 11/19/2022] Open
Abstract
Background/Aims: Acute lung injury (ALI) remains a severe disease that threatens human life around the world. To decrease the mortality of ALI and improve ALI treatment efficacy, the development of more ALI treatments is urgently needed. Whether fibrocytes directly participate in ALI has not been studied. Therefore, a mouse model of ALI was induced with lipopolysaccharide (LPS). Methods: Fibrocytes were harvested from peripheral blood mononuclear cells of bleomycin mice and identified by using flow cytometry to detect the expression of molecular makers. The fibrocytes were injected for the treatment of acute lung injury mice. The curative effects were evaluated by using ELISA to determine the cytokines (including TNF-α, IL-6 and IFN-γ) concentrations in bronchoalveolar lavage fluid (BALF) supernatant. Results: The concentrations of cytokines such as tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interferon-γ (IFN-γ) were increased in mice with ALI induced with LPS. The concentrations of TNF-α, IL-6, and IFN-γ as well as their mRNA and protein expression levels were decreased by administration of fibrocytes. The effect of fibrocytes in ameliorating ALI was time dependent. LPS treatment induced an increase in myeloperoxidase (MPO) activity, whereas the fibrocyte treatment caused inhibition of MPO activity as well as expression of the neutrophil-chemoattractant chemokine macrophage inflammatory protein 2 (MIP-2). Conclusion: Taken together, these data suggest that fibrocytes ameliorated ALI by suppressing inflammatory cytokines and chemokines as well as by decreasing the accumulation of neutrophils in the lung.
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Xu Y, Tai W, Qu X, Wu W, Li Z, Deng S, Vongphouttha C, Dong Z. Rapamycin protects against paraquat-induced pulmonary fibrosis: Activation of Nrf2 signaling pathway. Biochem Biophys Res Commun 2017. [PMID: 28624451 DOI: 10.1016/j.bbrc.2017.06.074] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [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: 12/27/2022]
Abstract
Paraquat (PQ) is a widely used herbicide indeveloping countries worldwide, and pulmonary fibrosis is one of the most typical features of PQ poisoning. The molecular mechanism of PQ toxicity especially how to treat PQ-induced pulmonary fibrosis is still largely unknown. In animal model of pulmonary fibrosis, we used HE staining, western blotting assay and Real-time PCR assay to analyze the effects of rapamycin on the PQ-induced epithelial mesenchymal transition (EMT). We found that PQ induced the pulmonary fibrosis using HE staining and Masson's staining, and up-regulated the activity of HYP and the mRNA expressions of Collagen I and III (COL-1and COL-3) in pulmonary tissues. We also found that rapamycin down-regulated the mesenchymal cell marker Vimentin and up-regulated the epithelial cell marker E-cadherin both in mRNA and protein levels compared with PQ group. And the EMT associated transcription factor Snail was decreased by rapamycin treatment compared with PQ group. And PQ decreased the Nrf2 expression both in mRNA and protein levels, and rapamycin inhibited these effects of PQ. SFN, a activator of Nrf2, could inhibit the EMT and the expression of Snail. And knockdowon of Nrf2 could abolish the inhibitory effects of rapamycin of PQ-induced EMT. In conclusion, rapamycin protects against paraquat-induced pulmonary fibrosis by activation of Nrf2 signaling pathway.
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Affiliation(s)
- Yiheng Xu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Xiaoyuan Qu
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Wenjuan Wu
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - ZhenKun Li
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Shuhao Deng
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Chanthasone Vongphouttha
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Zhaoxing Dong
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
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Baloch Z, Yuan T, Yindi S, Feng Y, Tai W, Liu Y, Liu L, Zhang A, Wang B, Wu X, Xia X. Prevalence of genital human papillomavirus among rural and urban populations in southern Yunnan province, China. ACTA ACUST UNITED AC 2016; 49:e5254. [PMID: 27254662 PMCID: PMC4932820 DOI: 10.1590/1414-431x20165254] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 03/11/2016] [Indexed: 11/22/2022]
Abstract
This study was designed to investigate and compare the HPV prevalence, genotypes distribution and associated risk factors in rural and urban women living in Xishuang Banna district, in the province of Yunnan. A total of 177 and 190 women from rural and urban areas were engaged, respectively. HPV DNA was amplified using the L1 consensus primers system (MY09/11 and GP5/6) and HPV GenoArray test was conducted for genotyping. Proportions were compared by chi-square test, and logistic regression was used to evaluate risk factors. A total of 54 women were positive for HPV DNA. Among rural women, 23 women were positive for HPV infection, of which 21 showed a single infection and 2 had a multiple infection. HPV-16 (10/23) was the most prevalent genotype followed by HPV-52 (5/23), and HPV-58 (5/23). Urban women had a higher infection rate for overall HPV (31/54) and for multiple genotype infection (8/31). HPV-52 (9/31) was the most prevalent genotype followed by HPV-39 (7/31) and HPV-68 (5/31). The age-specific HPV prevalence was also different between rural and urban women. In urban area, women with age <35 years had the highest HPV prevalence, which declined thereafter as age advanced. However, in rural women the highest HPV prevalence was observed in an older age group (>56 years). Ethnicity, smoking and parity were significantly associated with HPV infection among urban women. Our study demonstrates that HPV prevalence and genotype distribution varies among women from rural and urban areas in the south of Yunnan.
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Affiliation(s)
- Z Baloch
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - T Yuan
- Yunnan Province, Kunming, China
| | - S Yindi
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Y Feng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - W Tai
- The Second Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Y Liu
- Yunnan Province, Kunming, China
| | - L Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - A Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - B Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - X Wu
- Yunnan Province, Kunming, China
| | - X Xia
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
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Baloch Z, Li Y, Yuan T, Feng Y, Liu Y, Tai W, Liu L, Wang B, Zhang AM, Wu X, Xia X. Epidemiologic characterization of human papillomavirus (HPV) infection in various regions of Yunnan Province of China. BMC Infect Dis 2016; 16:228. [PMID: 27230472 PMCID: PMC4881205 DOI: 10.1186/s12879-016-1562-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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: 12/08/2015] [Accepted: 05/10/2016] [Indexed: 11/10/2022] Open
Abstract
Background This study was designed to determine the Human papillomavirus (HPV) prevalence and its distribution of genotypes in various regions of Yunnan Province, China. Method In this study, participants were recruited during routine gynecologic examination between Oct 2013 and Feb 2015. A total of 17,898 women were recruited. Polymerase chain reaction was used for detecting the HPV positive samples and HPV geno-array test was used for genotyping. Results The overall HPV infection rate (19.9 %) among the south-western women was significantly higher (P = 0.001) than that among the north-western (18.0 %), south-eastern (13.3 %), north-eastern (11.1 %) and central women (12.9 %). The high-risk (HR) (18.1 %, P = 0.001) and single genotype (16.7 %, P = 0.001) infection rates among the South-western women were also significantly higher than those of among the north-western (13.9 %, 11.3 %), south-eastern (11.6 %, 10.5 %), north-eastern (9.6 %, 9.1 %) and central women (10.5 %, 10.0 %), respectively. While, the infections with multiple HPV (4.2 %) genotypes were significantly more common (P = 0.001) among women in north-western Yunnan than women in the south-western (1.3 %, 3.1 %), south-eastern (1.7 %, 2.7 %), north-eastern (1.5 %, 2.0 %) and central Yunnan (2.4 %, 2.9 %). A total of 30 HPV genotypes were detected; among them 13 were HR-HPV, 3 were PHR-HPV (Potential High risk), 8 were LR-HPV (Low risk) and six were unclassified. The most common HPV genotypes were HPV-52, 16, 58, 53 in control group, HPV-16, 52, 58, 39 and 53 in CINI (Cervical intraepithelial Neoplasia), HPV-52, 16, 58, 33, 53 and 81 in CINII, HPV16, 58, 18, 52, 81 in CINIII and HPV-16 18, 58, 52 in cervical cancer (CC), respectively. Such variation has also been observed about distribution of HPV genotypes distribution among single and multiple infections. Conclusion This study gives an epidemiological estimate of HPV prevalence and different genotype distribution in various region of Yunnan province and further explains its prevalence in different neoplastic lesions. Overall HPV-16, 52, 58, and 18 are the leading HR-HPV genotypes.
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Affiliation(s)
- Zulqarnain Baloch
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,The Research Center for Molecular Medicine, Kunming, 650500, China
| | - Yuanyue Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,The Research Center for Molecular Medicine, Kunming, 650500, China
| | - Tao Yuan
- The First Hospital in Yunnan province, Kunming, 650034, China
| | - Yue Feng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,The Research Center for Molecular Medicine, Kunming, 650500, China
| | - Yanqing Liu
- The First Hospital in Yunnan province, Kunming, 650034, China
| | - Wenlin Tai
- The First Hospital in Yunnan province, Kunming, 650034, China
| | - Li Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,The Research Center for Molecular Medicine, Kunming, 650500, China
| | - Binghui Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,The Research Center for Molecular Medicine, Kunming, 650500, China
| | - A-Mei Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,The Research Center for Molecular Medicine, Kunming, 650500, China
| | - Xiaomei Wu
- The First Hospital in Yunnan province, Kunming, 650034, China.
| | - Xueshan Xia
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China. .,The Research Center for Molecular Medicine, Kunming, 650500, China.
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Dong Z, Tai W, Lei W, Wang Y, Li Z, Zhang T. IL-27 inhibits the TGF-β1-induced epithelial-mesenchymal transition in alveolar epithelial cells. BMC Cell Biol 2016; 17:7. [PMID: 26932661 PMCID: PMC4774182 DOI: 10.1186/s12860-016-0084-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 02/23/2016] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND IL-27 is a multifunctional cytokine that has both pro-inflammatory and anti-inflammatory functions. Although IL-27 has been shown to potently inhibit lung fibrosis, the detailed mechanism of IL-27 in this process is poorly understood. Epithelial-mesenchymal transition (EMT) is one of the key mechanisms involved in pulmonary fibrosis. We assessed the effects of IL-27 on TGF-β1-induced EMT in alveolar epithelial cells. METHODS A549 cells (a human AEC cell line) were incubated with TGF-β1, IL-27, or both TGF-β1 and IL-27, and changes in E-cadherin, β-catenin, vimentin and a-SMA levels were measured using real-time PCR, western blotting and fluorescence microscopy. The related proteins in the JAK/STAT and TGF-β/Smad signalling pathways were examined by western blot. RESULTS IL-27 increased the expression of epithelial phenotypic markers, including E-cadherin and β-catenin, and inhibited mesenchymal phenotypic markers, including vimentin and a-SMA in A549 cells. Moreover, TGF-β1-induced EMT was attenuated by IL-27. Furthermore, we found that TGF-β1 activated the phosphorylation of JAK1, STAT1, STAT3, STAT5, Smad1, Smad3 and Smad5, and IL-27 partially inhibited these changes in this process. When cells were treated with the STAT3 specific inhibitor wp1006 and the Smad3 specific inhibitor SIS3, the inhibition of EMT by IL-27 was significantly strengthened. CONCLUSION Our results suggest that IL-27 attenuates epithelial-mesenchymal transition in alveolar epithelial cells in the absence or presence of TGF-β1 through the JAK/STAT and TGF-β/Smad signalling pathways.
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Affiliation(s)
- Zhaoxing Dong
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, Yunnan, 650101, China.
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road, Kunming, Yunnan, China.
| | - Wen Lei
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, Yunnan, 650101, China.
| | - Yin Wang
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, Yunnan, 650101, China.
| | - ZhenKun Li
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, Yunnan, 650101, China.
| | - Tao Zhang
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road 374, Kunming, Yunnan, 650101, China.
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Dong Z, Zhao X, Tai W, Lei W, Wang Y, Li Z, Zhang T. IL-27 attenuates the TGF-β1-induced proliferation, differentiation and collagen synthesis in lung fibroblasts. Life Sci 2016; 146:24-33. [PMID: 26776832 DOI: 10.1016/j.lfs.2016.01.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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: 10/07/2015] [Revised: 01/04/2016] [Accepted: 01/04/2016] [Indexed: 12/13/2022]
Abstract
AIMS Pulmonary fibrosis is a type of chronic lung disease and has characteristics that progress quickly, has a high fatality rate and a poor therapeutic effect. Our previous research showed that interleukin-27(IL-27) potentially attenuates BLM-induced pulmonary fibrosis, but the function of IL-27 in lung fibroblasts (LFs) differentiation pulmonary fibrosis is yet to be known. MAIN METHODS Here we investigated the effect of IL-27 on the proliferation, differentiation and collagen synthesis of lung fibroblasts induced by transforming growth factor-β1 (TGF-β1)using MTT, bromodeoxyuridine(BrdU) staining, real-time quantitative PCR(qPCR), Western blot, cell cycle FACS assay and immunofluorescence. We also examined the expression of the JAK/STAT and TGF-β1/Smad signaling pathway of IL-27 in lung fibroblasts. KEY FINDINGS TGF-β1 treated lung fibroblasts showed significantly increased proliferation, differentiation and collagen synthesis as well as overactivated JAK/STAT and TGF-β1/Smad signaling. However, the presence of IL-27 weakened these effects and obviously inactivated the JAK/STAT and TGF-β1/Smad signaling pathways. SIGNIFICANCE Our results indicate that IL-27 may play an anti-fibrotic role in the development, differentiation and collagen synthesis in lung fibroblasts. These data also may provide a target gene therapy method in treating pulmonary fibrosis.
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Affiliation(s)
- Zhaoxing Dong
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University; Kunming, Yunnan, China.
| | - Xinxiang Zhao
- Department of Radiology, The 2nd Affiliated Hospital of Kunming Medical University; Kunming, Yunnan, China.
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road, Kunming, Yunnan, China.
| | - Wen Lei
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University; Kunming, Yunnan, China.
| | - Yin Wang
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University; Kunming, Yunnan, China.
| | - ZhenKun Li
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University; Kunming, Yunnan, China.
| | - Tao Zhang
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University; Kunming, Yunnan, China.
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Li H, Zhou Z, Tai W, Feng W, Zhang D, Gu X, Yang R. Decreased Frequency of IL-17F rs763780 Site Allele G is Associated With Genetic Susceptibility to Immune Thrombocytopenia in a Chinese Population. Clin Appl Thromb Hemost 2015; 23:466-471. [PMID: 26620416 DOI: 10.1177/1076029615618022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Interleukin 17F (IL-17F) is an inflammatory cytokine that plays an important role in autoimmune disease by inducing the expression of multiple chemokines, cytokines, and adhesion molecules. In vitro functional analysis revealed that IL-17F rs763780 polymorphism is associated with IL-17 expression and activity. Thus, considering the abnormal percentage of T helper 17 cells in patients with primary immune thrombocytopenia (ITP), we speculated there was a possible association between the IL-17F rs763780 polymorphisms and genetic susceptibility to ITP in a Chinese Han population. A total of 165 patients with ITP and 149 healthy controls were included in this study, and IL-17F rs763780 polymorphisms were analyzed by a polymerase chain reaction–restriction fragment length polymorphism system. The results showed that the frequency of the IL-17F rs763780 G allele in total patients with ITP or patients with chronic ITP was significantly lower than in normal controls (total ITP 3.6% vs controls 7.7%, P = .026; chronic ITP 3.5% vs controls 7.7%, P = .031). However, no significant difference in genotype frequencies was found among total patients with ITP, patients with chronic ITP, and normal controls. We further analyzed the association of IL-17F polymorphisms with clinical parameters of patients with ITP, and no association revealed between gene distribution and first onset age, clinical therapy response to glucocorticoids, or disease course. What’s more, an evident discrepancy with allelic frequencies was observed between female patients with ITP and gender-matched controls. In conclusion, IL-17F rs763780 polymorphisms may be associated with the development of ITP in a Chinese Han population.
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Affiliation(s)
- Huiyuan Li
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Zeping Zhou
- Department of Hematology, the Second Affiliated Hospital of Kunming Medical University, Kunming, China
- Yunnan Molecular Diagnosis Centre, the Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wenlin Tai
- Yunnan Molecular Diagnosis Centre, the Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Weiyang Feng
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Donglei Zhang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Xueping Gu
- Department of Hematology, the Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Renchi Yang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
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22
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Baloch Z, Yuan T, Wang B, Tai W, Feng Y, Liu Y, Li X, Feng Y, Liu L, Zhang AM, Wu X, Xia X. Ethnic and geographic variations in HPV prevalence and genotype distribution in north-western Yunnan, China. J Med Virol 2015; 88:532-40. [PMID: 26266484 DOI: 10.1002/jmv.24352] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2015] [Indexed: 11/09/2022]
Abstract
The prevalence and genotype distribution of human papillomavirus (HPV) vary throughout the world. To assess the prevalence and genotype distribution of HPV among three ethnic groups in two geographic locations in north-western Yunnan, we recruited 522 women in Shangri-le (n = 255) and Lijiang (n = 267). PCR amplification of HPV DNA was performed on cervical cells from these women using two consensus primer systems (MY09/11 and GP5/6). Amplified-HPV DNA was genotyped using the HPV GenoArray test. Geographically, the HPV prevalence was significantly higher (P = 0.002) among Shangri-le women than among Lijiang women. Infections with high-risk (HR)-HPV and with multiple HPV genotypes were also significantly more common (P = 0.001) among women in Shangri-le than women in Lijiang. Additionally, the prevalence of overall, HR-HPV, and single genotype HPV infections was significantly higher (P = 0.001) among Tibetan women than among Naxi and Han women. HPV-16 and HPV-33 were significantly more frequent in Shangri-le women compared with Lijiang (P = 0.006) women. In addition, HPV-16 (9.81%) and HPV-33 (5.88%) were significantly more prevalent in Tibetan women than in Naxi and Han women. Here, for the first time, we highlight the significant variation in the prevalence and genotype distribution of HPV in various populations in the north-western region of Yunnan Province.
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Affiliation(s)
- Zulqarnain Baloch
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,Research Center for Molecular Medicine, Kunming, 650500, China
| | - Tao Yuan
- First Hospital, Yunnan Province, Kunming, 650034, China
| | - Binghui Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,Research Center for Molecular Medicine, Kunming, 650500, China
| | - Wenlin Tai
- Second Affiliated Hospital, Kunming Medical University, Kunming, 650101, China
| | - Yue Feng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,Research Center for Molecular Medicine, Kunming, 650500, China
| | - Yanqing Liu
- First Hospital, Yunnan Province, Kunming, 650034, China
| | - Xiao Li
- First Hospital, Yunnan Province, Kunming, 650034, China
| | - Yue Feng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,Research Center for Molecular Medicine, Kunming, 650500, China
| | - Li Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,Research Center for Molecular Medicine, Kunming, 650500, China
| | - A-mei Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,Research Center for Molecular Medicine, Kunming, 650500, China
| | - Xiaomei Wu
- First Hospital, Yunnan Province, Kunming, 650034, China
| | - Xueshan Xia
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.,Research Center for Molecular Medicine, Kunming, 650500, China
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Dong Z, Lu X, Yang Y, Zhang T, Li Y, Chai Y, Lei W, Li C, Ai L, Tai W. IL-27 alleviates the bleomycin-induced pulmonary fibrosis by regulating the Th17 cell differentiation. BMC Pulm Med 2015; 15:13. [PMID: 25888222 PMCID: PMC4340860 DOI: 10.1186/s12890-015-0012-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/05/2015] [Indexed: 01/09/2023] Open
Abstract
Background Interleukin-27 (IL-27) is a multifunctional cytokine with both pro-inflammatory and immunoregulatory functions. At present, the role of IL-27 in pulmonary fibrosis remains unknown. Methods In this study, we observed the expression of IL-27/IL-27R in a mouse model of bleomycin (BLM)-induced pulmonary fibrosis. We verified the role of IL-27 using hematoxylin and eosin as well as Masson’s staining methods and measuring the content of hydroxyproline as well as collagen I and III. We assessed the differentiation of T lymphocytes in the spleen and measured the concentration of cytokines in bronchoalveolar lavage fluid (BALF) and the expression level of relevant proteins in the JAK/STAT and TGF-ß/Smad signaling pathways in lung tissue. Results Increased IL-27 expression in BLM-induced pulmonary fibrosis was noted. IL-27 treatment may alleviate pulmonary fibrosis and increase the survival of mice. IL-27 inhibited the development of CD4+ IL-17+, CD4+ IL-4+ T, and CD4+ Foxp3+ cells and the secretion of IL-17, IL-4, IL-6, and TGF-ß. IL-27 induced the production of CD4+ IL-10+ and CD4+ INF-γ+ T cells. IL-27 decreased the levels of phosphorylated STAT1, STAT3, STAT5, Smad1, and Smad3 but increased the level of SOCS3. Conclusions This study demonstrates that IL-27 potentially attenuates BLM-induced pulmonary fibrosis by regulating Th17 differentiation and cytokine secretion.
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Affiliation(s)
- Zhaoxing Dong
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Xin Lu
- Department of Hospital Services, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Yanni Yang
- Department of Scientific Research and Postgraduate Education, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Tao Zhang
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Yongxia Li
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Yanlin Chai
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Wen Lei
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Changbo Li
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Li Ai
- Department of Respiratory, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Wenlin Tai
- Department of Clinical Laboratory, Yunnan Molecular Diagnostic Center, The 2nd Affiliated Hospital of Kunming Medical University, Dianmian Road, Kunming, Yunnan, China, 650101.
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Yuan H, Liu H, Tai W, Wang F, Zhang Y, Yao S, Ran T, Lu S, Ke Z, Xiong X, Xu J, Chen Y, Lu T. Molecular modelling on small molecular CDK2 inhibitors: an integrated approach using a combination of molecular docking, 3D-QSAR and pharmacophore modelling. SAR QSAR Environ Res 2013; 24:795-817. [PMID: 23941641 DOI: 10.1080/1062936x.2013.815655] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Cyclin-dependent kinase 2 (CDK2) has been identified as an important target for developing novel anticancer agents. Molecular docking, three-dimensional quantitative structure-activity relationship (3D-QSAR) and pharmacophore modelling were combined with the ultimate goal of studying the structure-activity relationship of CDK2 inhibitors. The comparative molecular similarity indices analysis (CoMSIA) model constructed based on a set of 3-aminopyrazole derivatives as CDK2 inhibitors gave statistically significant results (q (2) = 0.700; r (2) = 0.982). A HypoGen pharmacophore model, constructed using diverse CDK2 inhibitors, also showed significant statistics ([Formula: see text]Cost = 61.483; RMSD = 0.53; Correlation coefficient = 0.98). The small residues and error values between the estimated and experimental activities of the training and test set compounds proved their strong capability of activity prediction. The structural insights obtained from these two models were consistent with each other. The pharmacophore model summarized the important pharmacophoric features required for protein-ligand binding. The 3D contour maps in combination with the comprehensive pharmacophoric features helped to better interpret the structure-activity relationship. The results will be beneficial for the discovery and design of novel CDK2 inhibitors. The simplicity of this approach provides expansion to its applicability in optimizing other classes of small molecular CDK2 inhibitors.
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Affiliation(s)
- H Yuan
- a Laboratory of Molecular Design and Drug Discovery, School of Science, China Pharmaceutical University , Nanjing , China
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25
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Dong Z, Yang Y, Zhang T, Li Y, Kang Q, Lei W, Cao Y, Niu X, Wang D, Tai W. siRNA-Act1 inhibits the function of IL-17 on lung fibroblasts via the NF-κB pathway. ACTA ACUST UNITED AC 2013; 86:332-40. [PMID: 23689683 DOI: 10.1159/000348403] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 01/25/2013] [Indexed: 11/19/2022]
Abstract
BACKGROUND Interleukin (IL)-17-producing T lymphocytes play a role in pulmonary fibrosis, but the possible mechanism of IL-17 on lung fibroblasts remains uncertain. OBJECTIVES To explore the role and possible mechanism of IL-17 on lung fibroblasts. METHODS A mouse model of pulmonary fibrosis was established by intratracheal administration of 5 mg/kg bleomycin. At 14 days following bleomycin administration the pulmonary fibroblasts were isolated, cultured and identified. siRNA for activator 1 (Act1) were transfected into lung fibroblasts, which were cocultured with IL-17. The NF-κB pathway was detected for IL-17 on the lung fibroblasts. RESULTS IL-17R was increased significantly at 14 days in the bleomycin-induced pulmonary fibroblast model, exogenous IL-17 significantly promoted the proliferation of the pulmonary fibroblasts in primary culture and obviously increased the expression of α-smooth muscle actin and type I and type III collagen in the fibroblasts. We found that IL-17 rapidly activated the NF-κB signaling pathway through activated phosphorylated p65 and IκB, and all roles of IL-17 on lung fibroblasts were inhibited under the interference for the expression of Act1 in lung fibroblasts. CONCLUSION IL-17 may directly promote the proliferation, transformation and collagen synthesis of lung fibroblasts via the NF-kB signaling pathway, which can be inhibited by the interference for the expression of Act1.
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Affiliation(s)
- Zhaoxing Dong
- Respiratory Department, The 2nd Affiliated Hospital of Kunming Medical University, Kunming, China
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26
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Dong Z, Tai W, Yang Y, Zhang T, Li Y, Chai Y, Zhong H, Zou H, Wang D. The role of all-transretinoic acid in bleomycin-induced pulmonary fibrosis in mice. Exp Lung Res 2012; 38:82-9. [DOI: 10.3109/01902148.2011.646052] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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27
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Dong Z, Kang Q, Lei W, Zhong H, Tai W, Wang D. [Effects of interleukin-17 on murine pulmonary fibroblast proliferation, transformation and collagen synthesis]. Nan Fang Yi Ke Da Xue Xue Bao 2012; 32:75-79. [PMID: 22366009] [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: 05/31/2023]
Abstract
OBJECTIVE To investigate the effects of interleukin-17 (IL-17) on the proliferation, transformation and collagen synthesis of the lung fibroblasts in mice with bleomycin-induced pulmonary fibrosis. METHODS In a mouse model of pulmonary fibrosis established by intratracheal administration of 5 mg/kg bleomycin, the dynamic expressions of IL-17/IL-17 receptor (IL-17R) mRNAs were detected by RT-PCR. At 14 days following bleomycin administration, the pulmonary fibroblasts were isolated, cultured and identified. MTT assay was used to assess the proliferation of the pulmonary fibroblasts in response to IL-17 treatment at different concentrations, and RT-PCR and Western blotting were employed to examine the mRNA and protein expressions of α-smooth muscle actin (α-SMA) and types I and III collagen. RESULTS IL-17/IL-17R mRNA levels were increased obviously in the pulmonary fibroblasts of rats with pulmonary fibrosis, and the highest expressions occurred at 14 days following bleomycin administration. Exogenous IL-17, at the optimal concentration of 50 ng/ml, significantly promoted the proliferation of the pulmonary fibroblasts in primary culture and obviously increased α-SMA expression and types I and III collagen synthesis in the fibroblasts. CONCLUSION IL-17 can promote the proliferation, transformation, and collagen synthesis of the pulmonary fibroblasts from rats with bleomycin-induced pulmonary fibrosis.
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Affiliation(s)
- Zhaoxing Dong
- Department of Respiratory, Kunming Medical University, Kunming, China.
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28
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Tai W, Roberts L, Seryshev A, Gubatan JM, Bland CS, Zabriskie R, Kulkarni S, Soong L, Mbawuike I, Gilbert B, Kheradmand F, Corry DB. Multistrain influenza protection induced by a nanoparticulate mucosal immunotherapeutic. Mucosal Immunol 2011; 4:197-207. [PMID: 20736998 DOI: 10.1038/mi.2010.50] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
All commercial influenza vaccines elicit antibody responses that protect against seasonal infection, but this approach is limited by the need for annual vaccine reformulation that precludes efficient responses against epidemic and pandemic disease. In this study we describe a novel vaccination approach in which a nanoparticulate, liposome-based agent containing short, highly conserved influenza-derived peptides is delivered to the respiratory tract to elicit potent innate and selective T cell-based adaptive immune responses. Prepared without virus-specific peptides, mucosal immunostimulatory therapeutic (MIT) provided robust, but short-lived, protection against multiple, highly lethal strains of influenza in mice of diverse genetic backgrounds. MIT prepared with three highly conserved epitopes that elicited virus-specific memory T-cell responses but not neutralizing antibodies, termed MITpep, provided equivalent, but more durable, protection relative to MIT. Alveolar macrophages were more important than dendritic cells in determining the protective efficacy of MIT, which induced both canonical and non-canonical antiviral immune pathways. Through activation of airway mucosal innate and highly specific T-cell responses, MIT and MITpep represent novel approaches to antiviral protection that offer the possibility of universal protection against epidemic and pandemic influenza.
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Affiliation(s)
- W Tai
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, USA
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Tai W, Tan I, Tan M, Ngeow Y, Koo Y, Tao M, Quek R, Lim S. 9211 Dose dense R-CHOP-14 may be superior to conventional R-CHOP-21 with comparable toxicities in Asian patients with high risk Diffuse Large B Cell Lymphoma. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71902-0] [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: 11/30/2022] Open
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30
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Tai W, Schwarte R. Design of an aspherical lens to generate a homogenous irradiance for three-dimensional sensors with a light-emitting-diode source. Appl Opt 2000; 39:5801-5805. [PMID: 18354581 DOI: 10.1364/ao.39.005801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A design of a large-numerical-aperture aspherical singlet for three-dimensional (3-D) sensor applications is presented. This lens can be used to generate a homogenous irradiance on the target in a 3-D sensor, which is based on the principle of time of flight and uses an LED as light source. A numerical method was used in the design. The designed planoaspherical singlet has a numerical aperture of 0.67, low refractive index, and moderate surface shape for easy fabrication. The simulation results revealed that the irradiance deviation within 97% of the designed area is less than 5% and that the transmittance of the lens is greater than 90.5%. The results from a Lambertian source were compared with those from a point source.
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Abstract
Male sterility was investigated in backcross populations from hybrids between Diplotaxis muralis and Brassica napus using the former as the female parent. The F1 was male sterile and low frequencies (less than 20%) of male sterile plants were obtained from subsequent backcross generations. The data did not fit any Mendelian genetic ratios. Cytological examination of pollen mother cells from 52 plants of these backcross populations indicated the presence of an extra chromosome in all 22 male sterile plants and the normal chromosome number (2n = 38) in the remaining 30 fertile plants. Thus an extra chromosome which is derived from Diplotaxis muralis appears to be the sole cause of male sterility in these backcross populations.Key words: male sterility, Brassica napus, Diplotaxis muralis.
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