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Resveratrol promotes osteogenesis and angiogenesis through mediating immunology of senescent macrophages
Biomed Mater. 2022 Jul 13. doi: 10.1088/1748-605X/ac80e3.
Ruiqiang Hang 1, Jiahui Wang 2, Xue Tian 2, Ruifeng Wu 3, Ruiyue Hang 2, Yuyu Zhao 2, Yonghua Sun 2, Honggang Wang 4
Abstract:
...The present work proposes to use resveratrol as an autophagy inducing agent to upregulate the autophagy level of senescent macrophages to restore homeostasis, consequently generating a favorable immune microenvironment. The results show 0.1-1 µM of resveratrol can induce autophagy of senescent macrophages, promote cell viability and proliferation, reduce intracellular reactive oxygen species (ROS) level, and polarize the cells to pro-healing M2 phenotype. The immune microenvironment created by senescent macrophages upon resveratrol stimulation can promote osteogenesis and angiogenesis, as manifested by upregulated proliferation, alkaline phosphatase activity, type I collagen secretion, and extracellular matrix mineralization of senescent osteoblasts as well as nitric oxide production, migration, and in vitro angiogenesis of senescent endothelial cells. In addition, resveratrol-loaded silk fibroin coatings can be fabricated on titanium surface through electrophoretic co-deposition and the coatings show beneficial effects on the functions of senescent macrophages. Our results suggest resveratrol can be used as surface additive of titanium implants to promote osseointegration of elderly people though regulating immunology of senescent macrophages.
PMID: 35830846
Tags: angiogenesis, autophagy, cell culture, Osteogenesis, resveratrol