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miR-144 regulates transforming growth factor-β1 iduced hepatic stellate cell activation in human fibrotic liver.

pmid: 26097586
pmc: PMC4466973
miR-144 regulates transforming growth factor-β1 iduced hepatic stellate cell activation in human fibrotic liver.
Activation of hepatic stellate cells (HSCs) into collagen producing myofibroblasts is critical for pathogenesis of liver fibrosis. Transforming growth factor-β1 (TGF-β1) is one of the main profibrogenic mediators for HSC transdifferentiation. Recent studies have shown effect of microRNAs (miRNAs) on regulating TGF-β1-induced HSC activation during liver fibrosis. Here, we aimed to explore the roles of miR-144 and miR-200c in human liver fibrosis.Expression of TGF-β1 was detected in 42 fibrotic and 18 normal human liver tissues by quantitative real time polymerase chain reaction (qRT-PCR) and immunohistochemistry, and its correlation with α-smooth muscle actin (α-SMA) was calculated. miR-144 and miR-200c expression level in fibrotic liver tissues were also detected by qRT-PCR. The correlation of TGF-β1 expression with miR-200c and miR-144 in the fibrotic liver was analyzed.The results showed that TGF-β1 expression was much higher in fibrotic liver than that in normal liver tissues (P<0.05). TGF-β1 protein high expressing liver fibrosis showed α-SMA positive cells in the liver parenchyma indicating activated HSCs. Expression of TGF-β1 in fibrotic liver was significantly correlated with α-SMA expression (R=0.633, P<0.001). Furthermore, miR-144 was less expressed in liver fibrosis (P<0.05) and was significantly correlated with expression of TGF-β1 in fibrotic liver tissues (R=-0.442, P<0.01). However, miR-200c did not show significant difference between normal and fibrotic liver (P=0.48) and correlation with TGF-β1 expression (R=0.106, P=0.51).All the results indicate that miR-144 can be a novel regulator of TGF-β1-induced HSC activation during liver fibrosis.
- Gannan Medical University China (People's Republic of)
Liver Cirrhosis, Male, Carcinoma, Hepatocellular, Liver Neoplasms, Middle Aged, Transforming Growth Factor beta1, MicroRNAs, Liver, Hepatic Stellate Cells, Humans, Female, Aged, Cell Proliferation
Liver Cirrhosis, Male, Carcinoma, Hepatocellular, Liver Neoplasms, Middle Aged, Transforming Growth Factor beta1, MicroRNAs, Liver, Hepatic Stellate Cells, Humans, Female, Aged, Cell Proliferation
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