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Mao Y, Ou S, Zhu C, Lin S, Liu X, Liang M, Yu J, Wu Y, He H, Zong R, Lin Z, Liu Z, Li W. Downregulation of p38 MAPK signaling pathway ameliorates tissue engineered corneal epithelium. Tissue Eng Part A 2022; 28:977-989. [PMID: 36066335 DOI: 10.1089/ten.tea.2022.0082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Tissue engineered corneal epithelium transplantation is effective treatment for severe limbal stem cell deficiency (LSCD), while epithelial terminal differentiation, tans-differentiation and insufficient stem cell during construction affects the quality of tissue engineered corneal epithelium. In this study, we applied SB203580 in the culture medium to downregulate the P38 MAPK signaling pathway during construction of tissue engineered corneal epithelium. With application of SB203580, tissue engineered corneal epithelium showed enhanced strength and condensed structure. The expression of progenitor cell markers ABCG2, P63, K14, Wnt7a was increased, differentiation markers K12, Pax6, K10, K13, and trans-differentiation markers α-SMA and Snail1 was decreased, while cell junction markers Claudin-1 and E-cadherin was increased in the tissue engineered corneal epithelium. The wnt/β-catenin signaling pathway was upregulated in the epithelium after p38 MAPK inhibition. Transplantation of tissue engineered corneal epithelium treated with SB203580 to rabbit LSCD model showed faster wound healing and improved epithelial quality. We conclude that downregulation of p38 MAPK signaling pathway helps maintain the stemness, prevent terminal differentiation and abnormal differentiation of corneal epithelial cells during epithelium construction process, thus can improve the quality of tissue engineered corneal epithelium.
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Affiliation(s)
- Yi Mao
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Shangkun Ou
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Chengfang Zhu
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Sijie Lin
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Xiaodong Liu
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Minghui Liang
- School of Medicine, Nankai University, Naikai, Fujian, China;
| | - Jingwen Yu
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Yiming Wu
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Hui He
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Rongrong Zong
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, 3. Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, China;
| | - Zhirong Lin
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China;
| | - Zuguo Liu
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Department of Ophthalmology, Xiang'an Hospital of Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
| | - Wei Li
- Eye Institute of Xiamen University and affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Department of Ophthalmology, Xiang'an Hospital of Xiamen University, Xiamen, Fujian, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian, China;
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Bacteroides fragilis Toxin Induces Intestinal Epithelial Cell Secretion of Interleukin-8 by the E-Cadherin/β-Catenin/NF-κB Dependent Pathway. Biomedicines 2022; 10:biomedicines10040827. [PMID: 35453577 PMCID: PMC9032310 DOI: 10.3390/biomedicines10040827] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 03/24/2022] [Accepted: 03/30/2022] [Indexed: 11/29/2022] Open
Abstract
Enterotoxigenic Bacteroides fragilis (ETBF) has emerged as a gut microbiome pathogen that can promote colitis associated cancer in humans. ETBF secretes the metalloprotease, B. fragilis toxin (BFT), which can induce ectodomain cleavage of E-cadherin and IL-8 secretion through the β-catenin, NF-κB, and MAPK pathways in intestinal epithelial cells. However, it is still unclear whether E-cadherin cleavage is required for BFT induced IL-8 secretion and the relative contribution of these signaling pathways to IL-8 secretion. Using siRNA knockdown and CRISPR knockout studies, we found that E-cadherin cleavage is required for BFT mediated IL-8 secretion. In addition, genetic ablation of β-catenin indicates that β-catenin is required for the BFT induced increase in transcriptional activity of NF-κB, p65 nuclear localization and early IL-8 secretion. These results suggest that BFT induced β-catenin signaling is upstream of NF-κB activation. However, despite β-catenin gene disruption, BFT still activated the MAPK pathway, suggesting that the BFT induced activation of the MAPK signaling pathway is independent from the E-cadherin/β-catenin/NF-κB pathway. These findings show that E-cadherin and β-catenin play a critical role in acute inflammation following ETBF infection through the inflammatory response to BFT in intestinal epithelial cells.
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3
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He J, Li X. Identification and Validation of Aging-Related Genes in Idiopathic Pulmonary Fibrosis. Front Genet 2022; 13:780010. [PMID: 35211155 PMCID: PMC8863089 DOI: 10.3389/fgene.2022.780010] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/19/2022] [Indexed: 12/13/2022] Open
Abstract
Aging plays a significant role in the occurrence and development of idiopathic pulmonary fibrosis (IPF). In this study, we aimed to identify and verify potential aging-associated genes involved in IPF using bioinformatic analysis. The mRNA expression profile dataset GSE150910 available in the Gene Expression Omnibus (GEO) database and R software were used to identify the differentially expressed aging-related genes involved in IPF. Hub gene expression was validated by other GEO datasets. Gene ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed on differentially expressed aging-related genes. Subsequently, aging-related genes were further screened using three techniques (least absolute shrinkage and selection operator (LASSO) regression, support vector machine, and random forest), and the receiver operating characteristic curves were plotted based on screening results. Finally, real-time quantitative polymerase chain reaction (qRT-PCR) was performed to verify the RNA expression of the six differentially expressed aging-related genes using the blood samples of patients with IPF and healthy individuals. Sixteen differentially expressed aging-related genes were detected, of which the expression of 12 were upregulated and four were downregulated. GO and KEGG enrichment analyses indicated the presence of several enriched terms related to senescence and apoptotic mitochondrial changes. Further screening by LASSO regression, support vector machine, and random forest identified six genes (IGF1, RET, IGFBP2, CDKN2A, JUN, and TFAP2A) that could serve as potential diagnostic biomarkers for IPF. Furthermore, qRT-PCR analysis indicated that among the above-mentioned six aging-related genes, only the expression levels of IGF1, RET, and IGFBP2 in patients with IPF and healthy individuals were consistent with the results of bioinformatic analysis. In conclusion, bioinformatics analysis identified 16 potential aging-related genes associated with IPF, and clinical sample validation suggested that among these, IGF1, RET, and IGFBP2 might play a role in the incidence and prognosis of IPF. Our findings may help understand the pathogenesis of IPF.
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Affiliation(s)
- Jie He
- Clinical Medical College of Chengdu Medical College, Chengdu, China.,Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Xiaoyan Li
- Clinical Medical College of Chengdu Medical College, Chengdu, China.,Department of Endocrinology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
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4
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Li N, Qiu L, Zeng C, Fang Z, Chen S, Song X, Song H, Zhang G. Bioinformatic analysis of differentially expressed genes and pathways in idiopathic pulmonary fibrosis. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1459. [PMID: 34734011 PMCID: PMC8506768 DOI: 10.21037/atm-21-4224] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/10/2021] [Indexed: 12/26/2022]
Abstract
Background Using bioinformatic methods to explore the differentially expressed genes (DEGs) of human idiopathic pulmonary fibrosis (IPF) and to elucidate the pathogenesis of IPF from the genetic level. Methods The GSE110147 gene expression profile was downloaded from the GEO database. The data of lung adenocarcinoma (LUAD) samples, lung squamous cell carcinoma (LUSC) samples and normal samples were downloaded from The Cancer Genome Atlas (TCGA) and Genotype-Tissue Expression (GTEx) databases. DEGs between IPF patients and healthy donors were analyzed using the GEO2R tool. Use the "clusterprofiler" package in R software to perform gene ontology (GO) and KEGG pathway enrichment analysis, and then perform function annotation and protein-protein interaction (PPI) network construction in the STRING online tool. The Genome Browser tool of the university of california santa cruz (UCSC) online website was used to predict transcription factors (TFs) of genes. In the final, the results were analyzed synthetically. Results A total of 9,183 DEGs were identified, of which 4,545 genes were down-regulated, and 4638 were up-regulated. MMP1, SPP1, and BPIFB1 were the top three DEGs with the highest significant up-regulation. These DEGs played an important role in the occurrence of IPF through the MAPK (mitogen-activated protein kinase) signaling pathway. Furthermore, 50 DEGs were enriched in the expression of PD-L1 and the PD-1 checkpoint pathway in cancer, of which 11 genes were re-enriched in the pathway of non-small cell lung cancer. The expression of the 11 genes were extensively regulated by CTCFL, SP2 and ZNF341. Most of them were differentially expressed between lung cancers and normal lung tissues. The overall survival (OS) curve of LUAD were significantly stratified by AKT2, KRAS, PIK3R1, meanwhile the OS curve of LUAC was significantly stratified by MAPK3. Conclusions Bioinformatics analysis revealed that DEGs including MPP1 might be potential targets and biomarkers of IPF, and the MAPK signaling pathway is related to the occurrence and development of IPF. The development of IPF lung cancer complications may be related to the activation of genes enriched in PD-L1 expression and PD-1 checkpoint pathway, which provides clues to the pathogenesis of IPF combined with lung cancer.
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Affiliation(s)
- Nana Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lingxiao Qiu
- Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China.,Henan Provincial Medical Key Laboratory for Interstitial Lung Disease and Lung Transplantation, Zhengzhou, China
| | - Cheng Zeng
- Department of Thoracic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zeming Fang
- Department of Lung Transplantation Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shanshan Chen
- Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiangjin Song
- Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Heng Song
- General ICU, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guojun Zhang
- Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Provincial Medical Key Laboratory for Interstitial Lung Disease and Lung Transplantation, Zhengzhou, China.,Zhengzhou Key Laboratory for Chronic Respiratory Disease, Zhengzhou, China.,Henan Provincial Respiratory Medicine Center, Zhengzhou, China
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5
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Zhu W, Ding Q, Wang L, Xu G, Diao Y, Qu S, Chen S, Shi Y. Vitamin D3 alleviates pulmonary fibrosis by regulating the MAPK pathway via targeting PSAT1 expression in vivo and in vitro. Int Immunopharmacol 2021; 101:108212. [PMID: 34656907 DOI: 10.1016/j.intimp.2021.108212] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/23/2021] [Accepted: 09/28/2021] [Indexed: 12/14/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal fibrotic lung disease. However, there are insufficient drugs available for IPF treatment, and the currently used drugs are accompanied by many adverse reactions. Deficiency of vitamin D3 (VD3) in the development of IPF and the potential role of VD3 in the treatment of IPF have attracted increasing attention. In vivo experimental results showed that VD3 could increase the survival rate in bleomycin (BLM)-induced models, relieve lung inflammation, reduce hydroxyproline content, and inhibit collagen deposition and cell apoptosis. We further performed proteomics analysis and screened 251 target proteins that reflect VD3 intervention in BLM-induced animal models. These target proteins were involved in acute inflammation, oxidative stress, antioxidant activity and extracellular matrix binding. Combined with the comprehensive analysis of clinical samples, PSAT1 was screened out as a candidate target related to IPF disease and VD3 treatment. Through further computational analysis, the MAPK signaling pathway was considered to be the most probable candidate pathway for VD3 function targeting IPF. In in vivo experiments, VD3 inhibited BLM-induced expression of PSAT1 and phosphorylation of p38 and ERK1/2 in mouse lung tissue. The experiments of cell proliferation and western blot confirmed that VD3 inhibited the expression of PSAT1 and the activation of the mitogen-activated protein kinase (MAPK) pathway in human pulmonary fibroblasts (HPF). Furthermore, experiments with transfection plasmids overexpressing PSAT1 proved that VD3 could attenuate the proliferation and differentiation of HPF by suppressing the effect of PSAT1 on the MAPK signaling pathway. Finally, we confirmed that vitamin D receptor (VDR) could occupy the PSAT1 promoter to reveal the transcriptional regulation effect of VD3 on PSAT1. In conclusion, VD3 exerted a therapeutic effect on IPF by down-regulating the MAPK signaling pathway via targeting the expression of PSAT1.
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Affiliation(s)
- Wenxiang Zhu
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China; Shenzhen Research Institute, Beijing University of Chinese Medicine, Shenzhen, China
| | - Qi Ding
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China; Shenzhen Research Institute, Beijing University of Chinese Medicine, Shenzhen, China
| | - Lu Wang
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China; Shenzhen Research Institute, Beijing University of Chinese Medicine, Shenzhen, China
| | - Gonghao Xu
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | - Yirui Diao
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | - Sihao Qu
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | - Sheng Chen
- Shenzhen Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Shenzhen, China.
| | - Yuanyuan Shi
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China; Shenzhen Research Institute, Beijing University of Chinese Medicine, Shenzhen, China.
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6
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Lei Z, Yang L, Lei Y, Yang Y, Zhang X, Song Q, Chen G, Liu W, Wu H, Guo J. High dose lithium chloride causes colitis through activating F4/80 positive macrophages and inhibiting expression of Pigr and Claudin-15 in the colon of mice. Toxicology 2021; 457:152799. [PMID: 33901603 DOI: 10.1016/j.tox.2021.152799] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 04/02/2021] [Accepted: 04/21/2021] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Lithium chloride (LiCl) was a mood stabilizer for bipolar affective disorders and it could activate Wnt/β-catenin signaling pathway both in vivo and in vitro. Colon is one of a very susceptible tissues to Wnt signaling pathway, and so it would be very essential to explore the toxic effect of a high dose of LiCl on colon. METHODS C57BL/6 mice were injected intraperitoneally with 200 mg/kg LiCl one dose a day for 5 days to activate Wnt signal pathway in intestines. H&E staining was used to assess the colonic tissues of mice treated with high dose of LiCl. The expression of inflammation-associated genes and tight junction-associated genes in colons was measured using qPCR, Western blot and immunostaining methods. The gut microbiome was tested through 16S rDNA gene analysis. RESULTS The differentiation of enteroendocrine cells in colon was inhibited by treatment of 200 mg/kg LiCl. The F4/80 positive macrophages in colon were activated by high dose of LiCl, and migrated from the submucosa to the lamina propria. The expression of pro-inflammatory genes TNFα and IL-1β was increased in the colon of high dose of LiCl treated mice. Clostridium_sp_k4410MGS_306 and Prevotellaceae_UCG_001 were specific and predominant for the high dose of LiCl treated mice. The expression of IgA coding genes, Pigr and Claudin-15 was significantly decreased in the colon tissues of the high dose of LiCl treated mice. CONCLUSION 200 mg/kg LiCl might cause the inflammation in colon of mice through activating F4/80 positive macrophages and inhibiting the expression of IgA coding genes in plasma cells and the expression of Pigr and Claudin-15 in colonic epithelial cells, providing evidences for the toxic effects of high dose of LiCl on colon.
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Affiliation(s)
- Zili Lei
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Lanxiang Yang
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Yuting Lei
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Yanhong Yang
- The First Affiliated Hospital (School of Clinical Medicine), Guangdong Pharmaceutical University, Nong-Lin-Xia Road 19#, Yue-Xiu District, Guangzhou 510080, PR China
| | - Xueying Zhang
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Qi Song
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Guibin Chen
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Wanwan Liu
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Huijuan Wu
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Jiao Guo
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong TCM Key Laboratory for Metabolic Disease, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China.
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Matsumoto Y, Shiozaki A, Kosuga T, Kudou M, Shimizu H, Arita T, Konishi H, Komatsu S, Kubota T, Fujiwara H, Okamoto K, Kishimoto M, Konishi E, Otsuji E. Expression and Role of CFTR in Human Esophageal Squamous Cell Carcinoma. Ann Surg Oncol 2021; 28:6424-6436. [PMID: 33710504 DOI: 10.1245/s10434-021-09752-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 02/05/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND The cystic fibrosis transmembrane conductance regulator (CFTR) is a cAMP-dependent chloride (Cl-) anion conducting channel, and its role in esophageal squamous cell carcinoma (ESCC) was examined in the present study. METHODS Overexpression experiments were conducted on human ESCC cell lines following the transfection of a CFTR plasmid, and changes in cell proliferation, the cell cycle, apoptosis, migration, and invasion were assessed. A microarray analysis was performed to examine gene expression profiles. Fifty-three primary tumor samples collected from ESCC patients during esophagectomy were subjected to an immunohistochemical analysis. RESULTS Transfection of the CFTR plasmid into the ESCC KYSE 170 and KYSE 70 cell lines suppressed cell proliferation, migration, and invasion and induced apoptosis. The microarray analysis showed the up-regulated expression of genes involved in the p38 signaling pathway in CFTR plasmid-transfected KYSE 170 cells. Immunohistochemical staining revealed a relationship between the CFTR expression pattern at the invasive front and the pN category. A relationship was also observed between the weak expression of CFTR at the invasive front and a shorter postoperative survival in a prognostic analysis. CONCLUSIONS The overexpression of CFTR in ESCC activated the p38 signaling pathway and was associated with a good patient prognosis. These results indicate the potential of CFTR as a mediator of and/or a biomarker for ESCC.
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Affiliation(s)
- Yoshihisa Matsumoto
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Atsushi Shiozaki
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan.
| | - Toshiyuki Kosuga
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Michihiro Kudou
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiroki Shimizu
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Tomohiro Arita
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hirotaka Konishi
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Shuhei Komatsu
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeshi Kubota
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hitoshi Fujiwara
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazuma Okamoto
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Mitsuo Kishimoto
- Department of Pathology, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Eiichi Konishi
- Department of Pathology, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Eigo Otsuji
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Terayama M, Yamada K, Hagiwara T, Inazuka F, Sezaki T, Igari T, Yokoi C, Nohara K, Soma D, Dohi T, Kawamura YI. Glutathione S-transferase omega 2 regulates cell growth and the expression of E-cadherin via post-transcriptional down-regulation of β-catenin in human esophageal squamous cells. Carcinogenesis 2020; 41:875-886. [PMID: 31738399 DOI: 10.1093/carcin/bgz189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 09/05/2019] [Accepted: 11/15/2019] [Indexed: 01/10/2023] Open
Abstract
Glutathione S-transferase omega 2 (GSTO2), which belongs to the superfamily of GST omega class, lacks any appreciable GST activity. Although GSTO2 exhibits thioltransferase and glutathione dehydrogenase activities, its precise expression and physiological functions are still unclear. In the present study, we found that GSTO2 is exclusively expressed in the basal cell layer in Ki67-negative non-proliferative cells in the human esophageal mucosa. GSTO2 overexpression in esophageal squamous cell carcinoma (ESCC) cell lines inhibited cell growth and colony formation, and GSTO2-transfected cells formed smaller tumors in nude mice compared with mock-transfected cells. Interestingly, GSTO2 induction suppressed the expressions of E-cadherin and β-catenin at the cell-cell contact site. We quantified the phosphorylation levels of key proteins of MAPK signaling pathway and identified phosphorylation of p38. Additionally, HSP27, a downstream molecule of p38, was accelerated in GSTO2-transfected cells, unlike in mock-transfected cells. When GSTO2-transfected cells were treated with a p38 inhibitor, the expression of β-catenin and the membrane localization of E-cadherin was recovered. We next examined GSTO2 expression in 61 ESCC tissues using quantitative reverse transcription polymerase chain reaction and immunostaining. The results showed that GSTO2 mRNA and protein were significantly reduced in ESCC compared with normal tissues. When human ESCC cell lines were treated with 5-aza-2'-deoxycytidine, a DNA-methyltransferase inhibitor, GSTO2 transcription was induced, suggesting that aberrant hypermethylation is the cause of the down-regulated expression. Our results indicate that GSTO2 expression inhibits the membrane localization of E-cadherin, probably by modulation of the p38 signaling pathway. Down-regulation of GSTO2 by DNA hypermethylation contributes to the growth and progression of ESCC.
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Affiliation(s)
- Masayoshi Terayama
- Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan.,Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Chiba, Japan.,Course of Advanced and Specialized Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kazuhiko Yamada
- Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan.,Course of Advanced and Specialized Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Teruki Hagiwara
- Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
| | - Fumika Inazuka
- Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
| | - Takuhito Sezaki
- Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
| | - Toru Igari
- Pathology Division of Clinical Laboratory, National Center for Global Health and Medicine, Tokyo, Japan
| | - Chizu Yokoi
- Department of Gastroenterology and Hepatology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Kyoko Nohara
- Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan
| | - Daisuke Soma
- Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan
| | - Taeko Dohi
- Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
| | - Yuki I Kawamura
- Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
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Paeoniflorin Attenuates Myocardial Fibrosis in Isoprenaline-induced Chronic Heart Failure Rats via Inhibiting P38 MAPK Pathway. Curr Med Sci 2020; 40:307-312. [PMID: 32337690 DOI: 10.1007/s11596-020-2178-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 03/25/2020] [Indexed: 12/28/2022]
Abstract
Paeoniforin (Pae) is a monoterpenoid glycoside compound and has many biological activities, such as immunosuppression, anti-inflammation and anti-cell proliferation. However, the effects and mechanisms of Pae on chronic heart failure (CHF) remain unclear. This study was conducted to assess the effects and mechanisms of Pae on myocardial fbrosis in isoprenaline (Iso)-induced CHF rats. Pae (20 mg/kg) was intragastrically administrated to CHF rats for 6 weeks. Cardiac structure and function were assessed. The protein and mRNA levels of transforming growth factor β1 (TGF-β1) and p38 were detected. Compared to Iso group, Pae could alleviate myocardial fibrosis and improve cardiac function in CHF rats. The levels of collagen volume fraction (13.75%±3.77% vs. 30.97%±4.22%, P<0.001) and perivascular collagen volume area (14.32%±2.50% vs. 28.31%±3.16%, P<0.001) were signifcantly reduced in Pae group as compared with those in Iso group. The expression of TGF-β1 protein (0.30±0.07 vs. 0.66±0.07, P<0.05) and mRNA (3.51±0.44 vs. 7.58±0.58, P<0.05) decreased signifcantly in Pae group as compared with that in Iso group. The expression of p38 protein (0.36±0.12 vs. 0.81±0.38, P<0.05) and mRNA (3.84±0.05 vs. 4.40±0.17, P<0.05) also decreased markedly in Pae group as compared with that in Iso group. Pae could attenuate myocardial fbrosis and improve cardiac function in CHF rats by down-regulating the p38 MAPK signaling pathway.
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