کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4155580 1273751 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
MicroRNA-21/PTEN/Akt axis in the fibrogenesis of biliary atresia
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی پریناتولوژی (پزشکی مادر و جنین)، طب اطفال و بهداشت کودک
پیش نمایش صفحه اول مقاله
MicroRNA-21/PTEN/Akt axis in the fibrogenesis of biliary atresia
چکیده انگلیسی

BackgroundMicroRNAs (miRNAs) are short, noncoding RNA molecules that act as post-transcriptional negative regulators of target mRNAs. Increasing evidence suggests that miRNAs are involved in liver fibrotic processes. Biliary atresia (BA) is characterized by rapid and progressive liver fibrosis. Therefore, we investigated the role of miRNA-21in the pathogenesis of BA.MethodsWe collected liver samples from patients with BA or liver trauma to examine the role of miRNA-21. We examined RNA expression of miRNA-21, phosphatase and tensin homolog deleted on chromosome ten (PTEN), and α-smooth muscle actin (α-SMA) in liver tissue using real-time fluorescence quantitative PCR. Western blot analyses and immunohistochemical staining were performed to evaluate protein expression of PTEN, α-SMA, and phosphorylated AKT in liver.ResultsWe found that miRNA-21was upregulated in liver samples from BA patients, whereas PTEN negatively correlated with suppression of the 3′-untranslated region (3′-UTR). Activation of the downstream AKT pathway provoked liver fibrosis by enhancing α-SMA levels.ConclusionsThe miRNA-21/PTEN/AKT axis promotes the fibrosis process in BA, which might be a potential therapeutic target to improve the prognosis of patients with BA.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pediatric Surgery - Volume 49, Issue 12, December 2014, Pages 1738–1741
نویسندگان
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