β Cell GLP-1R Signaling Alters α Cell Proglucagon Processing after Vertical Sleeve Gastrectomy in Mice.
β Cell GLP-1R Signaling Alters α Cell Proglucagon Processing after Vertical Sleeve Gastrectomy in Mice.
复制标题
DOI:
10.1016/j.celrep.2018.03.120
复制
发表时间:
2018-04-24
期刊:
影响因子:
8.8
通讯作者:
Cummings BP
中科院分区:
文献类型:
--
作者:
Garibay D;Lou J;Lee SA;Zaborska KE;Weissman MH;Sloma E;Donahue L;Miller AD;White AC;Michael MD;Sloop KW;Cummings BP
Bariatric surgery, such as vertical sleeve gastrectomy (VSG), causes high rates of type 2 diabetes remission and remarkable increases in postprandial glucagon-like peptide-1 (GLP-1) secretion. GLP-1 plays a critical role in islet function by potentiating glucose-stimulated insulin secretion; however, the mechanisms remain incompletely defined. Therefore, we applied a murine VSG model to an inducible β cell-specific GLP-1 receptor (GLP-1R) knockout mouse model to investigate the role of the β cell GLP-1R in islet function. Our data show that loss of β cell GLP-1R signaling decreases α cell GLP-1 expression after VSG. Furthermore, we find a β cell GLP-1R-dependent increase in α cell expression of the prohormone convertase required for the production of GLP-1 after VSG. Together, the findings herein reveal two concepts. First, our data support a paracrine role for α cell-derived GLP-1 in the metabolic benefits observed after VSG. Second, we have identified a role for the β cell GLP-1R as a regulator of α cell proglucagon processing. The mechanisms by which GLP-1 enhances insulin secretion remain incompletely defined. Garibay et al. show that β cell GLP-1R signaling regulates α cell PC1/3 expression and GLP-1 production, pointing to an intra-islet paracrine positive feedback loop by which GLP-1-potentiated insulin secretion is amplified.
登录
查看更多内容
影响因子:
8
作者:
O'Malley, Thomas J.;Fava, Genevieve E.;Zhang, Yanqing;Fonseca, Vivian A.;Wu, Hongju
通讯作者:
Wu, Hongju
影响因子:
24.5
作者:
McGavigan AK;Garibay D;Henseler ZM;Chen J;Bettaieb A;Haj FG;Ley RE;Chouinard ML;Cummings BP
通讯作者:
Cummings BP
影响因子:
64.5
作者:
Talchai C;Xuan S;Lin HV;Sussel L;Accili D
通讯作者:
Accili D
影响因子:
8.2
作者:
Marsk, R.;Jonas, E.;Naslund, E.
通讯作者:
Naslund, E.
影响因子:
16.2
作者:
Laferrere, Blandine;Heshka, Stanley;Olivan, Blanca
通讯作者:
Olivan, Blanca