Targeted delivery of MerTK protein via cell membrane engineered nanoparticle enhances efferocytosis and attenuates atherosclerosis in diabetic ApoE−/− Mice

Autor: Shuo Qiu, Jiahan Liu, Jianmei Chen, Yangni Li, Te Bu, Zhelong Li, Liang Zhang, Wenqi Sun, Tian Zhou, Wei Hu, Guodong Yang, Lijun Yuan, Yunyou Duan, Changyang Xing
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Nanobiotechnology, Vol 22, Iss 1, Pp 1-15 (2024)
Druh dokumentu: article
ISSN: 1477-3155
DOI: 10.1186/s12951-024-02463-y
Popis: Abstract Background Clearance of apoptotic cells by efferocytosis is crucial for prevention of atherosclerosis progress, and impaired efferocytosis contributes to the aggravated atherosclerosis. Results In this study, we found that diabetic ApoE–/– mice showed aggravated atherosclerosis as hyperglycemia damaged the efferocytosis capacity at least partially due to decreased expression of Mer tyrosine kinase (MerTK) on macrophages. To locally restore MerTK in the macrophages in the plaque, hybrid membrane nanovesicles (HMNVs) were thus developed. Briefly, cell membrane from MerTK overexpressing RAW264.7 cell and transferrin receptor (TfR) overexpressing HEK293T cell were mixed with DOPE polymers to produce nanovesicles designated as HMNVs. HMNVs could fuse with the recipient cell membrane and thus increased MerTK in diabetic macrophages, which in turn restored the efferocytosis capacity. Upon intravenous administration into diabetic ApoE–/– mice, superparamagnetic iron oxide nanoparticles (SMN) decorated HMNVs accumulated at the aorta site significantly under magnetic navigation, where the recipient macrophages cleared the apoptotic cells efficiently and thus decreased the inflammation. Conclusions Our study indicates that MerTK decrease in macrophages contributes to the aggravated atherosclerosis in diabetic ApoE–/– mice and regional restoration of MerTK in macrophages of the plaque via HMNVs could be a promising therapeutic approach. Graphic Abstract
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