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Published on: May 21, 2019
Minireview: microRNA function in pancreatic β cells
1Department of Molecular and Cellular Biochemistry, College of Medicine, University of Kentucky, Lexington, Kentucky 40536.
Abstract:
MicroRNAs are small noncoding ribonucleotides that regulate mRNA translation or degradation and have major roles in cellular function. MicroRNA (miRNA) levels are deregulated or altered in many diseases. There is overwhelming evidence that miRNAs also play an important role in the regulation of glucose homeostasis and thereby may contribute to the establishment of diabetes. MiRNAs have been shown to affect insulin levels by regulating insulin production, insulin exocytosis, and endocrine pancreas development. Although a large number of miRNAs have been identified from pancreatic β-cells using various screens, functional studies that link most of the identified miRNAs to regulation of pancreatic β-cell function are lacking. This review focuses on miRNAs with important roles in regulation of insulin production, insulin secretion, and β-cell development, and will discuss only miRNAs with established roles in β-cell function.
Insights
MicroRNAs regulate glucose homeostasis and insulin production, impacting diabetes development. This review highlights microRNAs with established roles in pancreatic beta-cell function, insulin secretion, and development.
Area of Science:
- Molecular Biology
- Endocrinology
- Genetics
Background:
- MicroRNAs (miRNAs) are small noncoding RNAs regulating gene expression.
- Altered miRNA levels are implicated in various diseases, including diabetes.
- MiRNAs play a critical role in glucose homeostasis and insulin regulation.
Purpose of the Study:
- To review microRNAs with established roles in pancreatic beta-cell function.
- To focus on miRNAs regulating insulin production, insulin secretion, and beta-cell development.
Main Methods:
- Literature review of functional studies on miRNAs in pancreatic beta-cells.
- Focus on miRNAs with experimentally validated roles.
Main Results:
- Numerous miRNAs are identified in pancreatic beta-cells.
- Functional studies linking most identified miRNAs to beta-cell function are limited.
- Specific miRNAs have demonstrated roles in insulin production, secretion, and beta-cell development.
Conclusions:
- MicroRNAs are crucial regulators of pancreatic beta-cell function and glucose homeostasis.
- Further functional studies are needed to fully elucidate the roles of many identified miRNAs in diabetes.
- Targeting specific miRNAs may offer therapeutic potential for diabetes treatment.
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