3D spheroids of umbilical cord-derived MSCs protect retinal pigment epithelium against oxidative and inflammatory injury by activating autophagy.

Qian Xu, Mengyao Li, Dong Li, Xiaoyu Dai, Yifei Zhang, Yi Qu

Department of Ophthalmology, Department of Geriatrics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Jinan, 250012, China.Department of Ophthalmology, Department of Geriatrics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Jinan, 250012, China. · pubmed

Paper

Abstract

Age-related macular degeneration (AMD) is characterized by progressive retinal pigment epithelium (RPE) dysfunction driven by oxidative stress and chronic inflammation, in which NLRP3 inflammasome activation plays a critical role. Mesenchymal stem cells (MSCs) exhibit therapeutic potential, but their efficacy is limited by poor survival and reduced paracrine activity in hostile microenvironments. Here, we investigated whether three-dimensional (3D) spheroid culture enhances the protective effects of umbilical cord-derived MSCs (UC-MSCs) on RPE cells by promoting autophagy and suppressing inflammasome activation.

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Research summary

The paper claims that 3D spheroid culture of umbilical cord-derived MSCs enhances their protective effects on retinal pigment epithelium by promoting autophagy and suppressing inflammasome activation. This research addresses mechanisms related to oxidative stress and inflammation, which are key factors in age-related macular degeneration, a condition linked to aging.

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