协同作用的表没食子儿茶素没食子酸酯(EGCG)和辅酶Q10二硬脂酰磷脂酰胆碱(DSPC)脂质体纳米粒可预防心肌梗死。

Synergetic EGCG and coenzyme Q10 DSPC liposome nanoparticles protect against myocardial infarction.

作者信息

Lei Wenrui, Yang Jie, Wang Junwei, Xiao Zezhou, Zhou Pengyu, Zheng Shaoyi, Zhu Peng

机构信息

Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.

出版信息

Biomater Sci. 2023 Oct 10;11(20):6862-6870. doi: 10.1039/d3bm00857f.

Abstract

At the site of myocardial infarction (MI), various phenomena such as oxidative stress and myocardial apoptosis can be observed. Both epigallocatechin gallate (EGCG) and coenzyme Q10 (CoQ10) exhibit antioxidant and anti-inflammatory effects. Macrophages have demonstrated a higher internalization rate of cationic liposomes, thereby increasing their bioavailability. This study utilized EGCG in synergy with CoQ10 as an antioxidant agent and distearyl phosphatidylcholine (DSPC) as the carrier, to create liposome nanoparticles known as CE-LNPs. The CE-LNPs exhibited favorable biocompatibility and were effectively engulfed by macrophages . In addition, the CE-LNPs effectively eradicated reactive oxygen species (ROS) in hypoxic cardiomyocytes, mitigated myocardial cell apoptosis, and sustained the functionality and proliferation of myocardial cells. The anti-apoptotic effect of the CE-LNPs was further validated through TUNEL and Annexin V FITC/PI experiments. The therapeutic efficacy of CE-LNPs was evaluated in a murine model of MI. CE-LNPs demonstrated a significant reduction in scar area , facilitating cardiac repair and improving cardiac function. These findings provide evidence that EGCG synergistically combined with CoQ10 in DSPC liposome nanoparticles offers protection against MI.

摘要

在心肌梗死(MI)部位,可观察到多种现象,如氧化应激和心肌细胞凋亡。表没食子儿茶素没食子酸酯(EGCG)和辅酶Q10(CoQ10)均具有抗氧化和抗炎作用。巨噬细胞对阳离子脂质体的内化率较高,从而提高了它们的生物利用度。本研究将EGCG与CoQ10协同用作抗氧化剂,并以二硬脂酰磷脂酰胆碱(DSPC)作为载体,制备了名为CE-LNPs的脂质体纳米颗粒。CE-LNPs表现出良好的生物相容性,并被巨噬细胞有效吞噬。此外,CE-LNPs有效清除了缺氧心肌细胞中的活性氧(ROS),减轻了心肌细胞凋亡,并维持了心肌细胞的功能和增殖。通过TUNEL和Annexin V FITC/PI实验进一步验证了CE-LNPs的抗凋亡作用。在MI小鼠模型中评估了CE-LNPs的治疗效果。CE-LNPs显著减少了瘢痕面积,促进了心脏修复并改善了心脏功能。这些发现证明,DSPC脂质体纳米颗粒中EGCG与CoQ10的协同组合可为MI提供保护。

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