ArticleMolecular therapy. Nucleic acids2019
The Different Roles of miRNA-92a-2-5p and let-7b-5p in Mitochondrial Translation in db/db Mice.
Article in Molecular therapy. Nucleic acids, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.
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Who cites it
47 citing papers in PubMed, 1 synthesis or guideline pooled it, 67 citations in OpenAlex.
- Noncoding RNA as potential therapeutics to rescue mitochondrial dysfunction in cardiovascular diseases.American journal of physiology. Heart and circulatory physiology · 2025Pooled it
- MiRNAs as biomarkers of nutritional therapy to achieve T2DM remission in patients with coronary heart disease: from the CORDIOPREV study.Nutrition & diabetes · 2025Trial
- The Role of MicroRNAs in Mitochondrial Homeostasis and their Involvement in the Pathogenesis of Obesity and Metabolic Syndrome: A Focus on MicroRNAs.Current medicinal chemistry · 2026Review
- MitomiRs as Key Players in Metabolic Reprogramming of Blood Cell Development.Experientia supplementum (2012) · 2026Review
- Mitochondrial dysfunction as a key player in aggravating periodontitis among diabetic patients: review of the current scope of knowledge.Naunyn-Schmiedeberg's archives of pharmacology · 2025Review
- The Life of MicroRNAs: Biogenesis, Function and Decay in Cancer.Biomolecules · 2025Review
- Mechanisms of microRNA trafficking to mitochondria in the heart.Current opinion in physiology · 2025Article
- Intracellular and Extracellular Vesicle miRNA Signatures in Human iPSC-Derived Neural Stem Cells and Floor Plate Progenitors.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025Article
- Multi-microRNA diagnostic panel for heart failure with preserved ejection fraction in preclinical and clinical settings.ESC heart failure · 2025Article
- Transcriptome analysis reveals the mechanism of Rhodiola polysaccharide affecting the proliferation of porcine Leydig cells under hypoxia.BMC veterinary research · 2025Article
- Extracellular vesicles of patients with acute-on-chronic liver failure induce mitochondrial dysfunction in T cells.Frontiers in immunology · 2025Article
- Mitochondrial microRNAs (mitomiRs) as emerging biomarkers and therapeutic targets for chronic human diseases.Frontiers in genetics · 2025Review
- Mitochondrial miRNAs and fibromyalgia: new biomarker candidates.Molecular biology reports · 2024Article
- Subcellular mass spectrometric detection unveils hyperglycemic memory in the diabetic heart.Journal of diabetes · 2024Article
- Fibroblast-localized lncRNA CFIRL promotes cardiac fibrosis and dysfunction in dilated cardiomyopathy.Science China. Life sciences · 2024Article
- A landscape of mouse mitochondrial small non-coding RNAs.PloS one · 2024Article
- Therapeutic effects of platelet-derived extracellular vesicles on viral myocarditis correlate with biomolecular content.Frontiers in immunology · 2024Article
- Non-coding RNAs regulating mitochondrial function in cardiovascular diseases.Journal of molecular medicine (Berlin, Germany) · 2023Review
- Positive feedback loop of miR-320 and CD36 regulates the hyperglycemic memory-induced diabetic diastolic cardiac dysfunction.Molecular therapy. Nucleic acids · 2023Article
- Non-coding RNAs in the pathophysiology of heart failure with preserved ejection fraction.Frontiers in cardiovascular medicine · 2023Review
Corrections and comments
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Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Excessive reactive oxygen species (ROS) generated in mitochondria is known to be a causal event in diabetic cardiomyopathy. Recent studies suggest that microRNAs (miRNAs) are able to translocate to mitochondria to modulate mitochondrial activities, but the roles of such miRNAs in diabetic cardiomyopathy remain unclear. We observed a marked reduction of mitochondrial gene cytochrome-b (mt-Cytb) in the heart of db/db mice compared with controls. Downregulation of mt-Cytb by small interfering RNA (siRNA) recaptured some key features of diabetes, including elevated ROS production. Microarray revealed that none of the miRNAs were upregulated, but 14 miRNAs were downregulated in mitochondria of db/db heart. miR-92a-2-5p and let-7b-5p targeted mt-Cytb and positively modulated mt-Cytb expression. Re-expression of miR-92a-2-5p and let-7b-5p into cardiomyocytes led to reduced ROS production. Furthermore, recombinant adeno-associated virus (rAAV)-mediated delivery of miR-92a-2-5p, but not let-7b-5p, was sufficient to rescue cardiac diastolic dysfunction in db/db heart. Let-7b-5p not only upregulated mt-Cytb in mitochondria, but also downregulated insulin receptor substrate 1 in cytosol and finally lead to no efficiency for improvement of diastolic dysfunction in db/db mice. Our findings demonstrate that reduced mitochondrial miRNAs contribute to impaired mitochondrial gene expression and elevated ROS production. Re-expression of miR-92a-2-5p enhances mitochondrial translation and reduces ROS production and lipid deposition, which finally rescues diabetic cardiomyopathy.
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