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Regulation of Insulin Biosynthesis


Marketed By :  VDM Verlag Dr. Müller   Sold By :  Kamal Books International  
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  • Product Description

Intracellular signaling by which pancreatic beta- cells synthesize and secrete insulin in control of glucose homeostasis is not fully understood. Here we show that Shp2, a cytoplasmic tyrosine phosphatase possessing 2 SH2 domains, coordinates signaling events required for insulin biosynthesis in beta-cells. Mice with conditional ablation of the Shp2/Ptpn11 gene in the pancreas exhibited defective glucosestimulated insulin secretion and impaired glucose tolerance. Consistently, siRNA-mediated Shp2-knockdown in rat insulinoma INS-1 832/13 cells resulted in decreased insulin production and secretion despite an increase in cellular ATP. Shp2 modulates the strength of signals flowing through Akt/FoxO1 and Erk pathways, culminating in control of Pdx1 expression and activity on Ins1 and Ins2 promoters, and forced Pdx1 expression rescued insulin production in Shp2-knockdown beta-cells. Therefore, Shp2 acts as a signal coordinator in beta-cells, orchestrating multiple pathways controlling insulin biosynthesis to maintain glucose homeostasis.

Product Specifications
SKU :COC22492
AuthorSharon S. Zhang
Number of Pages160
Publishing Year5/18/2010
Edition1 st
Book TypeBiology, life sciences
Country of ManufactureIndia
Product BrandVDM Verlag Dr. Müller
Product Packaging InfoBox
In The Box1 Piece
Product First Available On ClickOnCare.com2015-07-28 00:00:00
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