Research progress on the correlation between islet amyloid peptides and type 2 diabetes mellitus

Area of Science:

• Endocrinology
• Molecular Biology
• Pathology

Background:

• Type 2 diabetes mellitus (T2DM) involves insulin resistance and beta-cell dysfunction.
• Accumulation of human islet amyloid polypeptide (hIAPP) amyloid fibers in pancreatic islets is a hallmark of T2DM.
• hIAPP aggregation correlates with beta-cell death and T2DM severity.

Purpose of the Study:

• To review current research on the correlation between hIAPP and T2DM.
• To focus on the molecular mechanisms underlying hIAPP's role in T2DM.
• To discuss potential therapeutic strategies targeting hIAPP.

Main Methods:

• Comprehensive literature review of recent studies on hIAPP.
• Analysis of hIAPP biosynthesis, monomer structure, and fiber formation.
• Examination of hIAPP-induced beta-cell death mechanisms (oxidative stress, ER stress, mitochondrial dysfunction, inflammation).

Main Results:

• hIAPP biosynthesis and structure influence its function.
• hIAPP aggregation into amyloid fibers drives beta-cell dysfunction and death.
• Oxidative stress, ER stress, mitochondrial dysfunction, and inflammation mediate hIAPP toxicity.

Conclusions:

• hIAPP plays a critical role in T2DM pathogenesis.
• Understanding hIAPP mechanisms offers therapeutic targets for T2DM.
• Further research is needed for effective treatments against hIAPP aggregation.