کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1226592 1494803 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Proteomic analysis of liver mitochondria of apolipoprotein E knockout mice treated with metformin
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Proteomic analysis of liver mitochondria of apolipoprotein E knockout mice treated with metformin
چکیده انگلیسی

Nonalcoholic fatty liver disease (NAFLD) is strongly associated with insulin resistance. Metformin, a widely known anti-diabetic drug, used for patients with type 2 diabetes mellitus, is also claimed to be useful in treatment of NAFLD. However, both the clinical efficacy and the putative mechanisms underlying the clinical effects of metformin in treating NAFLD are unclear. Adenosine monophosphate‐activated protein kinase (AMPK), the primary molecular target for metformin, is a known regulator of mitochondrial function. Thus, we used a proteomic approach to investigate the effect of metformin on liver mitochondria of apolipoprotein E knockout (apoE−/−) mice, an animal model of NAFLD. Two-dimensional electrophoresis coupled with mass spectrometry was applied to study the changes in liver mitochondrial protein expression in 6-month old metformin-treated apoE−/− mice as compared to non-treated animals. Collectively, 25 differentially expressed proteins were indentified upon metformin treatment including proteins related to metabolism, oxidative stress and cellular respiration. The most up-regulated protein was glycine N-methyltransferase (GNMT) — an enzyme, whose deficiency was shown to be directly related to the development of NAFLD. Our results clearly point to the strong mitochondrial action of metformin in NAFLD. Up-regulation of GNMT may represent an important mechanism of beneficial action of metformin in NAFLD treatment.

Figure optionsDownload high-quality image (272 K)Download as PowerPoint slideHighlights
► ApoE−/− mice, which develop hepatic steatosis, were used as a model of NAFLD.
► 2DE-LC–MS/MS approach revealed the strong metformin action on liver mitochondria.
► The most up-regulated protein was glycine N-methyltransferase (GNMT).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Proteomics - Volume 77, 21 December 2012, Pages 167–175
نویسندگان
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