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논문 기본 정보

자료유형
학술저널
저자정보
Park Ji-Won (Department of Biomedical Gerontology Graduate School of Hallym University Chuncheon Korea.Departmen) Kim Mo-Jong (Department of Biomedical Gerontology Graduate School of Hallym University Chuncheon Korea.Ilsong In) Kim Sung-Eun (Department of Internal Medicine Hallym University Medical Center Anyang Korea.Institute for Liver a) Kim Hee-Jun (Ilsong Institute of Life Science Hallym University Anyang Korea.) Jeon Yong-Chul (Ilsong Institute of Life Science Hallym University Anyang Korea.) Shin Hae-Young (Ilsong Institute of Life Science Hallym University Anyang Korea.) Park Se Jin (Ilsong Institute of Life Science Hallym University Anyang Korea.) 장명국 (Institute for Liver and Digestive Diseases Hallym University Chuncheon Korea.Department of Internal) Kim Dong-Joon (Institute for Liver and Digestive Diseases Hallym University Chuncheon Korea.Department of Internal) Park Choong-Kee (Department of Internal Medicine Hallym University Medical Center Anyang Korea.Institute for Liver a) Choi Eun-Kyoung (Department of Biomedical Gerontology Graduate School of Hallym University Chuncheon Korea.Ilsong In)
저널정보
대한의학회 Journal of Korean Medical Science Journal of Korean Medical Science Vol.36 No.14
발행연도
2021.1
수록면
1 - 14 (14page)

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Background: Liver fibrosis is defined as the accumulation of the extracellular matrix and scar formation. The receptor for advanced glycation end products (RAGE) has been demonstrated to participate in fibrogenesis. S100B is a ligand of RAGE and exerts extracellular functions by inducing a series of signal transduction cascades. However, the involvement of S100B and RAGE in cholestasis-induced liver fibrosis remains unclear. In this study, we investigated S100B and RAGE expression during liver fibrosis in mice that underwent common bile duct ligation (BDL). Methods: BDL was performed in 10-week-old male C57BL/6J mice with sham control (n = 26) and BDL (n = 26) groups. Expression levels of S100B, RAGE and fibrotic markers in the livers from both groups at week 1 and 3 after BDL were examined by western blot and quantitative real-time reverse transcription polymerase chain reaction analysis. Liver fibrotic changes were examined by histological and ultrastructural analysis. Results: Histological staining with Sirius Red and the evaluation of the messenger RNA expression of fibrotic markers showed noticeable periportal fibrosis and bile duct proliferation. S100B was mainly present in bile duct epithelial cells, and its expression was upregulated in proportion to the ductular reaction during fibrogenesis by BDL. RAGE expression was also increased, and interestingly, triple immunofluorescence staining and transmission electron microscopy showed that both S100B and RAGE were expressed in proliferating bile duct epithelial cells and activated hepatic stellate cells (HSCs) of the BDL livers. In addition, in rat HSCs (HSC-T6), treatment with recombinant S100B protein significantly increased fibrotic markers in a dose-dependent manner, and RAGE small interfering RNA (siRNA) suppressed S100B-stimulated upregulation of fibrotic markers compared with cells treated with scramble siRNA and S100B. Conclusion: These findings suggest that the increased expression of S100B and RAGE and the interaction between S100B and RAGE may play an important role in ductular reaction and liver fibrosis induced by BDL.

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