Fig. 4.
Therapeutic efficacy of sEV treatment in T2DM mouse model. (a) Timeline of mouse treatment and research. (b) Changes in body weights of mice over time. (c) Blood glucose levels post-intravenous injection of MSC-sEVs and Ap-MSC-sEVs, or PBS as control; a significant reduction was observed in glucose levels, particularly with Ap-MSC-sEVs. (d–e) OGTT and IPITT results indicating improved glucose homeostasis in sEV-treated mice, with AP-MSC-sEVs showing increased efficacy compared to that of MSC-sEVs (*P < 0.05, **P < 0.01, ***P < 0.001). Abbreviations: sEVs, small extracellular vesicles; AP-MSC-sEVs, apelin-MSC-sEVs, engineered sEVs loaded with overexpressed apelin; Wharton’s jelly-derived mesenchymal stem cells (WJ-MSCs)