HACE2-Exosome-Based Nano-Bait for Concurrent SARS-CoV-2 Trapping and Antioxidant TherapyClick to copy article linkArticle link copied!
- Xiaoyi MaXiaoyi MaShanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Xiaoyi Ma
- Shiyu GuoShiyu GuoDepartment of Pharmacology, Tongji University School of Medicine, Shanghai Tenth People’s Hospital, Shanghai 200092, P. R. ChinaMore by Shiyu Guo
- Shuangrong RuanShuangrong RuanShanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Shuangrong Ruan
- Yao LiuYao LiuShanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Yao Liu
- Jie ZangJie ZangShanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Jie Zang
- Yushan YangYushan YangShanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Yushan Yang
- Haiqing DongHaiqing DongShanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Haiqing Dong
- Yan LiYan LiShanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Yan Li
- Tianbin Ren*Tianbin Ren*Email: [email protected]Shanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Tianbin Ren
- Maomao An*Maomao An*Email: [email protected]Department of Pharmacology, Tongji University School of Medicine, Shanghai Tenth People’s Hospital, Shanghai 200092, P. R. ChinaMore by Maomao An
- Yongyong Li*Yongyong Li*Email: [email protected]Shanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200092, P. R. ChinaMore by Yongyong Li
Abstract

Corona Virus Disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is seriously threatening human health. Following SARS-CoV-2 infection, immune cell infiltration creates an inflammatory and oxidative microenvironment, which can cause pneumonia, severe acute respiratory syndrome, kidney failure, and even death. Clinically, a safe and effective treatment strategy remains to be established. Herein, a nano-bait strategy for inhibition of SARS-CoV-2 infection by redirecting viral attack while simultaneously relieving inflammation is developed. Specifically, the nano-bait was based on the exosome-sheathed polydopamine (PDA@Exosome) nanoparticles, which were generated by exocytosis of the PDA nanoparticles from H293T cells. In this approach, PDA@Exosome inherits from the source cells of H293T cells a surface display of ACE2 through pre-engineered expression. The resulting PDA@Exosome can compete with ACE2-expressing epithelial cells for S protein binding, in either the pre-exposure or post-exposure route. Moreover, relying on the ability of PDA to intercept and deactivate radical species, the PDA@Exosome can significantly attenuate the level of inflammatory cytokines by mediating oxidative stress, a major cause of organ injury. Due to its high trapping, multiple antioxidant ability, and good biocompatibility, the HACE2-exosome based nano-bait is a promising robust antiviral nanotherapeutics for the ongoing COVID-19 pandemic.
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