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A Distinct Role for Interleukin‐6 as a Major Mediator of Cellular Adjustment to an Altered Culture Condition
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Hwa‐Kyung Son Iha Park Jue Young Kim Do Kyeong Kim Rasika P. Illeperuma Jung Yoon Bae Doo Young Lee Eun‐Sang Oh Da‐Woon Jung Darren R. Williams Jin Kim 《Journal of cellular biochemistry》2015,116(11):2552-2562
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Bombesin Receptor‐Activated Protein (BRAP) Modulates NF‐κB Activation in Bronchial Epithelial Cells by Enhancing HDAC Activity
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Ying Liu Xiao‐Qun Qin Horst Christian Weber Yang Xiang Chi Liu Hui‐Jun Liu Huan Yang Jianxin Jiang Xiangping Qu 《Journal of cellular biochemistry》2016,117(5):1069-1077
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RAR‐Related Orphan Receptor Gamma (ROR‐γ) Mediates Epithelial‐Mesenchymal Transition Of Hepatocytes During Hepatic Fibrosis
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Sung Min Kim Jung Eun Choi Wonhee Hur Jung‐Hee Kim Sung Woo Hong Eun Byul Lee Joon Ho Lee Tian Zhu Li Pil Soo Sung Seung Kew Yoon 《Journal of cellular biochemistry》2017,118(8):2026-2036
The epithelial‐mesenchymal transition (EMT) is involved in many different types of cellular behavior, including liver fibrosis. In this report, we studied a novel function of RAR‐related orphan receptor gamma (ROR‐γ) in hepatocyte EMT during liver fibrosis. To induce EMT in vitro, primary hepatocytes and FL83B cells were treated with TGF‐β1. Expression of ROR‐γ was analyzed by Western blot in the fibrotic mouse livers and human livers with cirrhosis. To verify the role of ROR‐γ in hepatocyte EMT, we silenced ROR‐γ in FL83B cells using a lentiviral short hairpin RNA (shRNA) vector. The therapeutic effect of ROR‐γ silencing was investigated in a mouse model of TAA‐induced fibrosis by hydrodynamic injection of plasmids. ROR‐γ expression was elevated in hepatocyte cells treated with TGF‐β1, and ROR‐γ protein levels were elevated in the fibrotic mouse livers and human livers with cirrhosis. Knockdown of ROR‐γ resulted in the attenuation of TGF‐β1‐induced EMT in hepatocytes. Strikingly, ROR‐γ bound to ROR‐specific DNA response elements (ROREs) in the promoter region of TGF‐β type I receptor (Tgfbr1) and Smad2, resulting in the downregulation of Tgfbr1 and Smad2 after silencing of ROR‐γ. Therapeutic delivery of shRNA against ROR‐γ attenuated hepatocyte EMT and ameliorated liver fibrosis in a mouse model of TAA‐induced liver fibrosis. Overall, our results suggest that ROR‐γ regulates TGF‐β‐induced EMT in hepatocytes during liver fibrosis. We suggest that ROR‐γ may become a potential therapeutic target in treating liver fibrosis. J. Cell. Biochem. 118: 2026–2036, 2017. © 2016 The Authors. Journal of Cellular Biochemistry Published by Wiley Periodicals Inc. 相似文献
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Survival Improvement in Human Retinal Pigment Epithelial Cells via Fas Receptor Targeting by miR‐374a
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Nooshin Tasharrofi Fatemeh Kouhkan Masoud Soleimani Zahra‐Sheila Soheili Mahboubeh Kabiri Mohaddeseh Mahmoudi Saber Farid Abedin Dorkoosh 《Journal of cellular biochemistry》2017,118(12):4854-4861
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We used non‐insulin producing pancreatic carcinoma cell line, MIA PaCa‐2 and have modulated its culture conditions by using 1% matrigel as extracellular matrix, N2, B27 growth supplements and serum free conditions. Expression of markers was analyzed using qRT‐PCR, immunofluorescence and in vitro functional assay for insulin and C‐peptide release was assessed using insulin and C‐peptide ELISA, respectively. The cells grown under this altered culture conditions have exhibited a transition in the morphology from mesenchymal to epithelial with extensive piling up of cells. A reduction in doubling time from 40 to 18 h, upregulation of beta islet specific markers like pancreatic duodenal homeobox‐1 (Pdx‐1), C‐peptide, insulin, and disappearance of markers like vimentin were observed. On the functional level, the altered morphology bearing cells released high levels of insulin in response to 10 µM tolbutamide (an activator of insulin pathway) and reduced insulin secretion in response to 50 µM nifedipine (inhibitor of the pathway). On the contrary, the original cells (mesenchymal morphology) had failed to release any insulin in response to varying concentrations of glucose and also the activators and inhibitors of the insulin pathway. This investigation thus provides a basis for using this basic developmental biology phenomenon mesenchymal to epithelial transition as a strategy to generate a large number of functional islets from stem cells of mesenchymal origin. J. Cell. Biochem. 9999: XX–XX, 2013. © 2013 Wiley Periodicals, Inc. J. Cell. Biochem. 114: 1642–1652, 2013. © 2013 Wiley Periodicals, Inc. 相似文献
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《Redox report : communications in free radical research》2013,18(1):7-18
AbstractConflicting evidence exists as to whether nitric oxide expresses damaging/inflammatory or antioxidant/anti-inflammatory properties. Data presented in this review indicate that in vitro or in vivo exposure to selected environmental or occupational agents, such as asbestos, silica, ozone or lipopolysaccharide, can result in up-regulation of inducible nitric oxide synthase by alveolar macrophages and pulmonary epithelial cells. In the case of silica exposure, evidence consistently supports a damaging/inflammatory role of nitric oxide and/or peroxynitrite in the pathogenesis of lung disease. Although conflicting data have been reported, the majority of published studies suggest that nitric oxide plays a damaging role in pulmonary injury resulting from exposure to ozone or asbestos. In contrast, most information supports an anti-inflammatory role of nitric oxide following exposure to lipopolysaccharide. Further investigation is required to elucidate fully the mechanisms involved in determining the role of nitric oxide in the initiation and progression of various pulmonary diseases. 相似文献
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