miR-135a-5p affects adipogenic differentiation of human adipose-derived mesenchymal stem cellsby promoting the Hippo signaling pathway.

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)

MicroRNAs (miRNAs) have been extensively studied and play a regulatory role during adipogenesis. Specifically, many miRNAs participate in regulation of mesenchymal stem cell (MSC) differentiation into adipogenic and osteogenic lineages. However, the regulatory mechanisms of miR-135a-5p in the Hippo signaling pathway during adipogenesis need to be explored. In this study, we observed that miR-135a-5p promotes adipogenesis of human adipose-derived MSCs (hADMSCs). miR-135a-5p was overexpressed in adipocytes compared to hADMSCs and further upregulation of miR-135a-5p promoted proliferation and adipogenesis of hADMSCs. In contrast, miR-135a-5p reduction inhibited these processes. Luciferase activity detection and Western blotting confirmed that overexpressed miR-135a-5p had the ability to upregulate the HIPPO signaling pathway. Subsequently, we observed that miR-135a-5p is targeted to key negative regulators in the HIPPO signaling pathway, including MOB kinase activator 1B (MOB1B) and large tumor suppressor 1 (LATS1). Moreover, suppression of LATS1 and MOB1B upregulated the activity of TEAD. In conclusion, we have verified that miR-135a-5p plays an active role in adipogenesis by targeting LATS1 and MOB1B expression, thereby enhancing the HIPPO signaling pathway.

Evidence level

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

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