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Kovác, L.* ; Speckmann, T.* ; Jähnert, M.* ; Gottmann, P.* ; Fritsche, L. ; Häring, H.-U. ; Birkenfeld, A.L. ; Fritsche, A. ; Schürmann, A.* ; Ouni, M.*

Identification of MicroRNAs associated with prediabetic status in obese women.

Int. J. Mol. Sci. 24:13 (2023)
Publ. Version/Full Text DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
MicroRNAs (miRNAs) recently emerged as means of communication between insulin-sensitive tissues to mediate diabetes development and progression, and as such they present a valuable proxy for epigenetic alterations associated with type 2 diabetes. In order to identify miRNA markers for the precursor of diabetes called prediabetes, we applied a translational approach encompassing analysis of human plasma samples, mouse tissues and an in vitro validation system. MiR-652-3p, miR-877-5p, miR-93-5p, miR-130a-3p, miR-152-3p and let-7i-5p were increased in plasma of women with impaired fasting glucose levels (IFG) compared to those with normal fasting glucose and normal glucose tolerance (NGT). Among these, let-7i-5p and miR-93-5p correlated with fasting blood glucose levels. Human data were then compared to miRNome data obtained from islets of Langerhans and adipose tissue of 10-week-old female New Zealand Obese mice, which differ in their degree of hyperglycemia and liver fat content. Similar to human plasma, let-7i-5p was increased in adipose tissue and islets of Langerhans of diabetes-prone mice. As predicted by the in silico analysis, overexpression of let-7i-5p in the rat β-cell line INS-1 832/12 resulted in downregulation of insulin signaling pathway components (Insr, Rictor, Prkcb, Clock, Sos1 and Kcnma1). Taken together, our integrated approach highlighted let-7i-5p as a potential regulator of whole-body insulin sensitivity and a novel marker of prediabetes in women.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Insulin Signaling ; Mirna ; Obesity ; Prediabetes; Extracellular Micrornas; Type-2; Heritability; Expression; Biomarker
ISSN (print) / ISBN 1422-0067
e-ISSN 1661-6596
Journal International Journal of Molecular Sciences
Quellenangaben Volume: 24, Issue: 21, Pages: , Article Number: 13 Supplement: ,
Publisher MDPI
Publishing Place Basel
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Diabetes Research and Metabolic Diseases (IDM)
Grants State of Brandenburg
German Federal Ministry of Education and Research (BMBF)