Extracellular vesicle–encapsulated IL-10 as novel nanotherapeutics against ischemic AKI

TT Tang, B Wang, M Wu, ZL Li, Y Feng, JY Cao… - Science …, 2020 - science.org
TT Tang, B Wang, M Wu, ZL Li, Y Feng, JY Cao, D Yin, H Liu, RN Tang, SD Crowley, LL Lv…
Science advances, 2020science.org
Recently, extracellular vesicles (EVs) have been attracting strong research interest for use
as natural drug delivery systems. We report an approach to manufacturing interleukin-10 (IL-
10)–loaded EVs (IL-10+ EVs) by engineering macrophages for treating ischemic acute
kidney injury (AKI). Delivery of IL-10 via EVs enhanced not only the stability of IL-10, but also
its targeting to the kidney due to the adhesive components on the EV surface. Treatment with
IL-10+ EVs significantly ameliorated renal tubular injury and inflammation caused by …
Recently, extracellular vesicles (EVs) have been attracting strong research interest for use as natural drug delivery systems. We report an approach to manufacturing interleukin-10 (IL-10)–loaded EVs (IL-10+ EVs) by engineering macrophages for treating ischemic acute kidney injury (AKI). Delivery of IL-10 via EVs enhanced not only the stability of IL-10, but also its targeting to the kidney due to the adhesive components on the EV surface. Treatment with IL-10+ EVs significantly ameliorated renal tubular injury and inflammation caused by ischemia/reperfusion injury, and potently prevented the transition to chronic kidney disease. Mechanistically, IL-10+ EVs targeted tubular epithelial cells, and suppressed mammalian target of rapamycin signaling, thereby promoting mitophagy to maintain mitochondrial fitness. Moreover, IL-10+ EVs efficiently drove M2 macrophage polarization by targeting macrophages in the tubulointerstitium. Our study demonstrates that EVs can serve as a promising delivery platform to manipulate IL-10 for the effective treatment of ischemic AKI.
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