MiR-34a-HK1 Signal Axis Retards Bone Marrow Mesenchymal Stem Cell Senescence Via Ameliorating Glycolytic Metabolism

Overview

Journal Stem Cell Res Ther

Publisher Biomed Central

Date 2024 Jul 31

PMID 39080798

Authors

Yanan Sun

Chang Zhang

Qianhui Ma

Xiao Yu

Xingyu Gao

Haiying Zhang

Yingai Shi

Yan Li

Xu He

Affiliations

Soon will be listed here.

Abstract

Background: Mesenchymal stem cells (MSCs) are one of the most widely studied adult stem cells, while MSC replicative senescence occurs with serial expansion in vitro. We determined whether miR-34a can regulate MSC senescence by directly targeting glycolytic key enzymes to influence glycolysis.

Methods: Detected the effects of miR-34a on MSC senescence and glycolytic metabolism through gene manipulation. Bioinformatics prediction and luciferase reporter assay were applied to confirm that HK1 is a direct target of miR-34a. The underlying regulatory mechanism of miR-34a targeting HK1 in MSC senescence was further explored by a cellular function recovery experiment.

Results: In the current study, we revealed that miR-34a over-expression exacerbated senescence-associated characteristics and impaired glycolytic metabolism. Then we identified hexokinase1 (HK1) as a direct target gene of miR-34a. And HK1 replenishment reversed MSC senescence and reinforced glycolysis. In addition, miR-34a-mediated MSC senescence and lower glycolytic levels were evidently rescued following the co-treatment with HK1 over-expression.

Conclusion: The miR-34a-HK1 signal axis can alleviate MSC senescence via enhancing glycolytic metabolism, which possibly provides a novel mechanism for MSC senescence and opens up new possibilities for delaying and suppressing the occurrence and development of aging and age-related diseases.

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