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Autophagy and its link to type II diabetes mellitus
Jai-Sing Yang1, Chi-Cheng Lu1, Sheng-Chu Kuo2
1Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan.
Abstract:
Autophagy, a double-edged sword for cell survival, is the research object on 2016 Nobel Prize in Physiology or Medicine. Autophagy is a molecular mechanism for maintaining cellular physiology and promoting survival. Defects in autophagy lead to the etiology of many diseases, including diabetes mellitus (DM), cancer, neurodegeneration, infection disease and aging. DM is a metabolic and chronic disorder and has a higher prevalence in the world as well as in Taiwan. The character of diabetes mellitus is hyperglycemia resulting from defects in insulin secretion, insulin action, or both. Type 2 diabetes mellitus (T2DM) is characterized by insulin resistance and failure of producing insulin on pancreatic beta cells. In T2DM, autophagy is not only providing nutrients to maintain cellular energy during fasting, but also removes damaged organelles, lipids and miss-folded proteins. In addition, autophagy plays an important role in pancreatic beta cell dysfunction and insulin resistance. In this review, we summarize the roles of autophagy in T2DM.
Insights
Autophagy is a cellular process crucial for survival, but its dysfunction is linked to diseases like type 2 diabetes mellitus (T2DM). This review explores autophagy's complex roles in T2DM pathogenesis and pancreatic beta cell function.
Area of Science:
- Cell Biology
- Metabolic Disorders
- Molecular Mechanisms
Background:
- Autophagy is a Nobel Prize-recognized cellular mechanism vital for maintaining physiological balance and promoting cell survival.
- Defects in autophagy are implicated in numerous diseases, including cancer, neurodegeneration, aging, and diabetes mellitus (DM).
- Type 2 diabetes mellitus (T2DM) is a prevalent metabolic disorder characterized by hyperglycemia due to impaired insulin secretion or action, often involving insulin resistance and pancreatic beta cell failure.
Purpose of the Study:
- To review and summarize the multifaceted roles of autophagy in the context of type 2 diabetes mellitus.
- To elucidate the involvement of autophagy in pancreatic beta cell dysfunction and the development of insulin resistance.
Main Methods:
- Literature review of scientific articles on autophagy and type 2 diabetes mellitus.
- Synthesis of current research findings on the molecular mechanisms linking autophagy to T2DM.
Main Results:
- Autophagy plays a dual role in T2DM, providing nutrients for cellular energy and clearing damaged cellular components.
- Autophagy is critically involved in maintaining pancreatic beta cell function and mitigating insulin resistance.
Conclusions:
- Autophagy is a key player in the pathophysiology of type 2 diabetes mellitus.
- Understanding autophagy's role offers potential therapeutic targets for T2DM management.
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