Endoplasmic Reticulum Stress-Associated Lipid Droplet Formation and Type II Diabetes

Diabetes mellitus (DM), a metabolic disorder characterized by hyperglycemia, is caused by insufficient insulin production due to excessive loss of pancreatic β cells (type I diabetes) or impaired insulin signaling due to peripheral insulin resistance (type II diabetes). Pancreatic β cell is the only...

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Main Authors: Xuebao Zhang, Kezhong Zhang
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Biochemistry Research International
Online Access:http://dx.doi.org/10.1155/2012/247275
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author Xuebao Zhang
Kezhong Zhang
author_facet Xuebao Zhang
Kezhong Zhang
author_sort Xuebao Zhang
collection DOAJ
description Diabetes mellitus (DM), a metabolic disorder characterized by hyperglycemia, is caused by insufficient insulin production due to excessive loss of pancreatic β cells (type I diabetes) or impaired insulin signaling due to peripheral insulin resistance (type II diabetes). Pancreatic β cell is the only insulin-secreting cell type that has highly developed endoplasmic reticulum (ER) to cope with high demands of insulin synthesis and secretion. Therefore, ER homeostasis is crucial to the proper function of insulin signaling. Accumulating evidence suggests that deleterious ER stress and excessive intracellular lipids in nonadipose tissues, such as myocyte, cardiomyocyte, and hepatocyte, cause pancreatic β-cell dysfunction and peripheral insulin resistance, leading to type II diabetes. The excessive deposition of lipid droplets (LDs) in specialized cell types, such as adipocytes, hepatocytes, and macrophages, has been found as a hallmark in ER stress-associated metabolic diseases, including obesity, diabetes, fatty liver disease, and atherosclerosis. However, much work remains to be done in understanding the mechanism by which ER stress response regulates LD formation and the pathophysiologic role of ER stress-associated LD in metabolic disease. This paper briefly summarizes the recent advances in ER stress-associated LD formation and its involvement in type II diabetes.
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spelling doaj-art-6eeed4c0cfa04eaf9e3bef995f8c447d2025-02-03T01:27:30ZengWileyBiochemistry Research International2090-22472090-22552012-01-01201210.1155/2012/247275247275Endoplasmic Reticulum Stress-Associated Lipid Droplet Formation and Type II DiabetesXuebao Zhang0Kezhong Zhang1Center for Molecular Medicine and Genetics, The Wayne State University School of Medicine, 540 East Canfield Avenue, Detroit, MI 48201, USACenter for Molecular Medicine and Genetics, The Wayne State University School of Medicine, 540 East Canfield Avenue, Detroit, MI 48201, USADiabetes mellitus (DM), a metabolic disorder characterized by hyperglycemia, is caused by insufficient insulin production due to excessive loss of pancreatic β cells (type I diabetes) or impaired insulin signaling due to peripheral insulin resistance (type II diabetes). Pancreatic β cell is the only insulin-secreting cell type that has highly developed endoplasmic reticulum (ER) to cope with high demands of insulin synthesis and secretion. Therefore, ER homeostasis is crucial to the proper function of insulin signaling. Accumulating evidence suggests that deleterious ER stress and excessive intracellular lipids in nonadipose tissues, such as myocyte, cardiomyocyte, and hepatocyte, cause pancreatic β-cell dysfunction and peripheral insulin resistance, leading to type II diabetes. The excessive deposition of lipid droplets (LDs) in specialized cell types, such as adipocytes, hepatocytes, and macrophages, has been found as a hallmark in ER stress-associated metabolic diseases, including obesity, diabetes, fatty liver disease, and atherosclerosis. However, much work remains to be done in understanding the mechanism by which ER stress response regulates LD formation and the pathophysiologic role of ER stress-associated LD in metabolic disease. This paper briefly summarizes the recent advances in ER stress-associated LD formation and its involvement in type II diabetes.http://dx.doi.org/10.1155/2012/247275
spellingShingle Xuebao Zhang
Kezhong Zhang
Endoplasmic Reticulum Stress-Associated Lipid Droplet Formation and Type II Diabetes
Biochemistry Research International
title Endoplasmic Reticulum Stress-Associated Lipid Droplet Formation and Type II Diabetes
title_full Endoplasmic Reticulum Stress-Associated Lipid Droplet Formation and Type II Diabetes
title_fullStr Endoplasmic Reticulum Stress-Associated Lipid Droplet Formation and Type II Diabetes
title_full_unstemmed Endoplasmic Reticulum Stress-Associated Lipid Droplet Formation and Type II Diabetes
title_short Endoplasmic Reticulum Stress-Associated Lipid Droplet Formation and Type II Diabetes
title_sort endoplasmic reticulum stress associated lipid droplet formation and type ii diabetes
url http://dx.doi.org/10.1155/2012/247275
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AT kezhongzhang endoplasmicreticulumstressassociatedlipiddropletformationandtypeiidiabetes