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Vol. 16 (2024)

Dual-Atom Nanozyme Eye Drops Attenuate Inflammation and Break the Vicious Cycle in Dry Eye Disease

https://doi.org/10.1007/s40820-024-01322-7
Dandan Chu
Henan Eye Hospital, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou 450003, People’s Republic of China
Mengyang Zhao
Henan Eye Hospital, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou 450003, People’s Republic of China
Shisong Rong
Department of Ophthalmology, Mass Eye and Ear, Mass General Brigham, Harvard Medical School, Boston, MA 02114, USA
Wonho Jhe
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
Xiaolu Cai
College of Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
Yi Xiao
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
Wei Zhang
Henan Eye Hospital, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou 450003, People’s Republic of China
Xingchen Geng
Henan Eye Hospital, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou 450003, People’s Republic of China
Zhanrong Li
Henan Eye Hospital, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou 450003, People’s Republic of China
Xingcai Zhang
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
Jingguo Li
Henan Eye Hospital, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou 450003, People’s Republic of China

Corresponding Author: Jingguo Li

lijingguo@zzu.edu.cn

Nano-Micro Letters, Vol. 16 (2024), Article Number: 120

Abstract

Dry eye disease (DED) is a major ocular pathology worldwide, causing serious ocular discomfort and even visual impairment. The incidence of DED is gradually increasing with the high-frequency use of electronic products. Although inflammation is core cause of the DED vicious cycle, reactive oxygen species (ROS) play a pivotal role in the vicious cycle by regulating inflammation from upstream. Therefore, current therapies merely targeting inflammation show the failure of DED treatment. Here, a novel dual-atom nanozymes (DAN)-based eye drops are developed. The antioxidative DAN is successfully prepared by embedding Fe and Mn bimetallic single-atoms in N-doped carbon material and modifying it with a hydrophilic polymer. The in vitro and in vivo results demonstrate the DAN is endowed with superior biological activity in scavenging excessive ROS, inhibiting NLRP3 inflammasome activation, decreasing proinflammatory cytokines expression, and suppressing cell apoptosis. Consequently, the DAN effectively alleviate ocular inflammation, promote corneal epithelial repair, recover goblet cell density and tear secretion, thus breaking the DED vicious cycle. Our findings open an avenue to make the DAN as an intervention form to DED and ROS-mediated inflammatory diseases.


Highlights:
1 A dual-atom nanozyme (DAN) was successfully prepared based on Fe and Mn bimetallic single-atom embedded in N-doped carbon material and modified with hydrophilic polymer.
2 The DAN possess excellent enzyme catalytic activity and attenuate dramatically inflammation by inhibiting the reactive oxygen species (ROS)/NLRP3 signal axis.
3 The DAN break the vicious cycle in dry eye disease and is a potential strategy for treating dry eye disease.

Keywords

Dry eye disease DAN Dual-atom nanozyme Vicious cycle NLRP3 inflammasome Nanomedicine
Chu, Dandan, Mengyang Zhao, Shisong Rong, Wonho Jhe, Xiaolu Cai, Yi Xiao, Wei Zhang, Xingchen Geng, Zhanrong Li, Xingcai Zhang, and Jingguo Li. 2024. “Dual-Atom Nanozyme Eye Drops Attenuate Inflammation and Break the Vicious Cycle in Dry Eye Disease”. Nano-Micro Letters 16 (February):120. https://doi.org/10.1007/s40820-024-01322-7.
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