The roles of Toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by Clonorchis sinensis

Abstract Pathogen-associated biliary fibrosis (PABF) is a type of liver fibrosis characterized by injuries of cholangiocytes and extra cellular matrix (ECM) deposition around bile ducts caused by various bacteria, fungi, virus and parasites. Recent studies show that TLR4 plays an important role in s...

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Autores principales: Chao Yan, Bo Li, Fang Fan, Ying Du, Rui Ma, Xiao-Dan Cheng, Xiang-Yang Li, Bo Zhang, Qian Yu, Yu-Gang Wang, Ren-Xian Tang, Kui-Yang Zheng
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Publicado: Nature Portfolio 2017
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spelling oai:doaj.org-article:8d1afa479e9d41adaed2160627e5c1ed2021-12-02T12:32:07ZThe roles of Toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by Clonorchis sinensis10.1038/s41598-017-04018-82045-2322https://doaj.org/article/8d1afa479e9d41adaed2160627e5c1ed2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04018-8https://doaj.org/toc/2045-2322Abstract Pathogen-associated biliary fibrosis (PABF) is a type of liver fibrosis characterized by injuries of cholangiocytes and extra cellular matrix (ECM) deposition around bile ducts caused by various bacteria, fungi, virus and parasites. Recent studies show that TLR4 plays an important role in several other types of liver fibrosis, but the mechanism of TLR4 in PABF is yet really unclear. In the present study, a PABF mouse model was established by a trematode infection-Clonorchis sinensis which dwells in the bile ducts and causes severe biliary fibrosis of mice. The results showed that the levels of collagen depositions, α-SMA and hydroxyproline (Hyp) contents in TLR4 mut mice infected by C. sinensis were significantly lower than in those of TLR4 wild ones. Furthermore, we found that the activation of TGF-β signaling was impaired in the TLR4 mut mice, compared with wild mice when they were challenged to the same dose of C. sinensis metacercariae. Moreover, the mice with TLR4 mutation showed a decreased activation of hepatic stellate cells indicated by the expression of α-SMA, when compared with TLR4 wild mice. These data demonstrate that TLR4 contributes to PABF caused by C. sinensis and TLR4 signaling may be a potential medical target for treatment of PABF.Chao YanBo LiFang FanYing DuRui MaXiao-Dan ChengXiang-Yang LiBo ZhangQian YuYu-Gang WangRen-Xian TangKui-Yang ZhengNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Chao Yan
Bo Li
Fang Fan
Ying Du
Rui Ma
Xiao-Dan Cheng
Xiang-Yang Li
Bo Zhang
Qian Yu
Yu-Gang Wang
Ren-Xian Tang
Kui-Yang Zheng
The roles of Toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by Clonorchis sinensis
description Abstract Pathogen-associated biliary fibrosis (PABF) is a type of liver fibrosis characterized by injuries of cholangiocytes and extra cellular matrix (ECM) deposition around bile ducts caused by various bacteria, fungi, virus and parasites. Recent studies show that TLR4 plays an important role in several other types of liver fibrosis, but the mechanism of TLR4 in PABF is yet really unclear. In the present study, a PABF mouse model was established by a trematode infection-Clonorchis sinensis which dwells in the bile ducts and causes severe biliary fibrosis of mice. The results showed that the levels of collagen depositions, α-SMA and hydroxyproline (Hyp) contents in TLR4 mut mice infected by C. sinensis were significantly lower than in those of TLR4 wild ones. Furthermore, we found that the activation of TGF-β signaling was impaired in the TLR4 mut mice, compared with wild mice when they were challenged to the same dose of C. sinensis metacercariae. Moreover, the mice with TLR4 mutation showed a decreased activation of hepatic stellate cells indicated by the expression of α-SMA, when compared with TLR4 wild mice. These data demonstrate that TLR4 contributes to PABF caused by C. sinensis and TLR4 signaling may be a potential medical target for treatment of PABF.
format article
author Chao Yan
Bo Li
Fang Fan
Ying Du
Rui Ma
Xiao-Dan Cheng
Xiang-Yang Li
Bo Zhang
Qian Yu
Yu-Gang Wang
Ren-Xian Tang
Kui-Yang Zheng
author_facet Chao Yan
Bo Li
Fang Fan
Ying Du
Rui Ma
Xiao-Dan Cheng
Xiang-Yang Li
Bo Zhang
Qian Yu
Yu-Gang Wang
Ren-Xian Tang
Kui-Yang Zheng
author_sort Chao Yan
title The roles of Toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by Clonorchis sinensis
title_short The roles of Toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by Clonorchis sinensis
title_full The roles of Toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by Clonorchis sinensis
title_fullStr The roles of Toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by Clonorchis sinensis
title_full_unstemmed The roles of Toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by Clonorchis sinensis
title_sort roles of toll-like receptor 4 in the pathogenesis of pathogen-associated biliary fibrosis caused by clonorchis sinensis
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/8d1afa479e9d41adaed2160627e5c1ed
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