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Published on: May 4, 2021
Incretins and microRNAs: Interactions and physiological relevance
Shabnam Radbakhsh1, Thozhukat Sathyapalan2, Maciej Banach3
1Department of Medical Biotechnology, Mashhad University of Medical Sciences, Mashhad, Iran.
Abstract:
MicroRNAs (miRNA) are one class of the small regulatory RNAs that can impact the expression of numerous genes including incretin hormones and their G protein-coupled receptors. Incretin peptides, including GLP-1, GLP-2, and GIP, are released from the gastrointestinal tract and have an crucial role in the glucose hemostasis and pancreatic beta-cell function. These hormones and their analogs with a longer half-life, glucagon like peptide-1 receptor agonists (GLP1RA), modify the expression of miRNAs. Dipeptidyl peptidase IV (DPP-4) is an enzyme that degrades the incretin hormones and is inactivated by DPP-4 inhibitors, which are a class of compounds used in the management of type 2 diabetes. DPP-4 inhibitors may also increase or reduce the expression of miRNAs. In this review, we describe the possible interactions between miRNAs and incretin hormones and the relevance of such interactions to physiological processes and diseases.
Insights
MicroRNAs (miRNAs) influence incretin hormones like GLP-1 and GIP, impacting glucose control. This review explores how miRNAs interact with incretins and DPP-4 inhibitors, relevant to type 2 diabetes.
Area of Science:
- Endocrinology
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) are small regulatory RNAs affecting gene expression.
- Incretin hormones (GLP-1, GLP-2, GIP) are vital for glucose homeostasis and beta-cell function.
- Glucagon-like peptide-1 receptor agonists (GLP1RA) and DPP-4 inhibitors are used in type 2 diabetes management.
Purpose of the Study:
- To review the interactions between miRNAs and incretin hormones.
- To elucidate the relevance of these interactions in physiological processes and diseases, particularly type 2 diabetes.
Main Methods:
- Literature review of studies investigating miRNA and incretin hormone interactions.
- Analysis of how GLP1RA and DPP-4 inhibitors affect miRNA expression.
- Synthesis of current knowledge on the physiological and pathological implications.
Main Results:
- miRNAs can modulate the expression of incretin hormones and their receptors.
- GLP1RA and DPP-4 inhibitors can alter miRNA expression profiles.
- These interactions suggest a complex regulatory network influencing glucose metabolism.
Conclusions:
- miRNA-incretin axis represents a significant area for understanding glucose homeostasis.
- Targeting this axis may offer novel therapeutic strategies for type 2 diabetes.
- Further research is needed to fully delineate these complex molecular interactions.
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