Circ-Hipk3 in Adipose Derived Stem Cells Exosome Alleviates Myocardial Infarction Induced Myocardial Damage by Regulation miR-138-5p/Sirt1 Axis Mediated Autophagy.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Myocardial infarction (MI) is a major health problem and is the leading cause of death worldwide. Accumulation studies confirm that exosomes derived from stem cells have been shown to effectively repair MI injury-induced cardiomyocyte damage. However, the cardioprotective benefits of adipose tissue-derived mesenchymal stem cell (ADSC)-Exos remain unclear. This study aimed to investigate the protective effects of exosomes from ADSC on the hearts of MI-treated mice and to explore the underlying mechanisms. Cellular and molecular mechanisms were investigated using cultured ADSCs. On C57BL/6 J mice, we performed myocardial MI model. HMEC-1 was used to identify the regulatory mechanism. ELISA was used for inflammatory factor expression detection. Luciferase report analysis detection showed the relationship among miR-138-5p, Sirt1 and circ-Hipk3. ADSCs exosome treatment significantly alleviates MI induced myocardial damage by promotion autophagy and inhibits inflammatory response. Circ-Hipk3 play an important role in ADSCs exosome mediated protective effect on MI induced myocardial damage. Luciferase report analysis confirmed that miR-138-5p and SIRT1 were at circ-Hipk3 downstream. Downregulation SIRT1 or upregulation miR-138-5p reversed the regulation effect of circ-Hipk3 on autophagy and inflammatory factor expression. Overexpression circ-Hipk3 increased the protective effect of AD

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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