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Kwon, Hyug Moo
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COL6A3-derived endotrophin links reciprocal interactions among hepatic cells in the pathology of chronic liver disease

Author(s)
Lee, ChanguKim, MinLee, Jun HoOh, JiyoungShin, Hyun-HeeLee, Sang MinScherer, PhilippKwon, H. MooChoi, Jang HyunPark, Jiyoung
Issued Date
2019-01
DOI
10.1002/path.5172
URI
https://scholarworks.unist.ac.kr/handle/201301/24928
Fulltext
https://onlinelibrary.wiley.com/doi/abs/10.1002/path.5172
Citation
JOURNAL OF PATHOLOGY, v.247, no.1, pp.99 - 109
Abstract
Extracellular matrix dysregulation is associated with chronic liver disease. CollagenVI‐alpha3 chain (COL6A3) is a biomarker for hepatic fibrosis and poor prognosis of hepatocellular carcinoma (HCC), but its function in liver pathology remains unknown. High levels of COL6A3 and its cleaved product, endotrophin (ETP) in tumor‐neighboring regions are strongly associated with poor prognosis in HCC patients. Here, we report that the high levels of ETP in injured hepatocytes induce JNK‐dependent hepatocyte apoptosis and activate non‐parenchymal cells to lead further activation of hepatic inflammation, fibrosis, and apoptosis. Nevertheless ETP per se showed limited phenotypic changes in normal liver tissues. Furthermore, inhibition of ETP activity by utilizing neutralizing antibodies efficiently suppressed the pathological consequences in chronic liver diseases. Our results implicate ETP mechanistically as a crucial mediator in reciprocal interactions among various hepatic cell populations in the pathogenesis of chronic liver disease, and it could be a promising therapeutic target particularly in individuals with high local levels of COL6A3.
Publisher
WILEY
ISSN
0022-3417
Keyword (Author)
endotrophincollagen VI A3pathologychronic liver diseaseJNK pathwayapoptosisinflammationfibrosis
Keyword
COLLAGEN-VIHEPATOCELLULAR-CARCINOMAFIBROSISJNKINFLAMMATIONMODELS

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