کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10814935 | 1058433 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gax inhibits perivascular preadipocyte biofunction mediated by IGF-1 induced FAK/Pyk2 and ERK2 cooperative pathways
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Perivascular adipocyte (PVAC) biofunctions were closely related to cardiovascular diseases; its specific biological mechanisms remained unclear. How to adjust PVAC functions of vascular cells is an important topic. The present study was designed to investigate whether FAK/Pyk2 and ERK1/2 MAPK signaling pathways participate in PVAC functions, which is activated by insulin-like growth factor 1(IGF-1) and inhibited by Gax. PVACs isolated from perivascular adipocyte were cultured, dedifferentiated, and stimulated with 10Â nM IGF-I. Cellular function experiments showed that IGF-1 promoted PVAC proliferation, adhesion, and migration. However Gax weakened IGF-1-mediated these function. Flow cytometry demonstrated that IGF-1 increased PVACs percent of S phase and decreased the percent of G0/G1 phase and apoptotic cells. While, Gax decreased the percent of S phase cells and increased those of G0-G1 phase and apoptotic cells. Western blotting and RT-PCR revealed that IGF-1 activated FAK/Pyk2 and ERK1/2 signaling pathways, upregulated the mRNA and protein expression of FAK, Pyk2, and ERK1/2, and suppressed p53 expression. Reversely, Gax lowered the expression of these signaling proteins and increased p53 expression. Therefore, IGF-1 mediated FAK/Pyk2 and ERK1/2 pathways to augment PVAC functions; Gax effectively counteracted these effects of IGF-1, repressed PVAC activities, and increased the cell apoptosis. Our findings suggested that FAK/Pyk2 and ERK1/2 cooperative activation mediated by IGF-1 is essential for PVAC functions, and Gax is a promising candidate gene to interfere with these signaling pathways and inhibit PVAC functions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cellular Signalling - Volume 26, Issue 12, December 2014, Pages 3036-3045
Journal: Cellular Signalling - Volume 26, Issue 12, December 2014, Pages 3036-3045
نویسندگان
Ping Liu, Jinbo Feng, Feng Kong, Qinghua Lu, Haijia Xu, Juan Meng, Yungi Jiang,