کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5508290 | 1537693 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Regulation of SREBP-2 intracellular trafficking improves impaired autophagic flux and alleviates endoplasmic reticulum stress in NAFLD
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Regulation of SREBP-2 intracellular trafficking improves impaired autophagic flux and alleviates endoplasmic reticulum stress in NAFLD Regulation of SREBP-2 intracellular trafficking improves impaired autophagic flux and alleviates endoplasmic reticulum stress in NAFLD](/preview/png/5508290.png)
چکیده انگلیسی
Sterol regulatory element-binding protein 2 (SREBP-2), is a well-known transcriptional regulator of cholesterol metabolism. SREBP-2 is activated unconventionally to promote excessive cholesterol accumulation in non-alcoholic fatty liver disease (NAFLD). In addition, recent studies suggested that excessive lipid and cholesterol accumulation can weaken cellular autophagy function and promote endoplasmic reticulum stress (ERS). However, it remains unknown whether regulation of SREBP-2 processing modulates autophagy and ERS. In this study, we demonstrated that inhibition of SREBP-2 intracellular trafficking by site-1 protease (S1P) and site-2 protease (S2P) specific inhibitors, or shRNAs targeting S1P and S2P, upregulated gene and protein expression of autophagy markers, and improved the impaired autophagic flux induced in both cell and mouse models of NAFLD. Furthermore, increased lipid degradation by autophagy could repress PERK-P-EIF2α signaling. Taken together, these findings suggest that regulating the nuclear transport of SREBP-2 reduces lipid deposition and ERS via an autophagy-dependent pathway.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids - Volume 1862, Issue 3, March 2017, Pages 337-350
Journal: Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids - Volume 1862, Issue 3, March 2017, Pages 337-350
نویسندگان
Xiaoling Deng, Xiaoli Pan, Chunwei Cheng, Beibei Liu, Huan Zhang, Yuping Zhang, Keshu Xu,