缺乏USP7促进糖尿病伤口愈合,通过抑制GATA3介导的炎症性巨细胞两极分化,促进糖尿病伤口愈合
Yan Zhu1, Ming Zong2, Ling Hu3
1Department of Endocrine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, Jiangxi, China; Department of Endocrine, The Third Affiliated Hospital, Jiangxi Medical College, Nanchang University, The First Hospital of Nanchang, Jiangxi Provincial Key Laboratory of Metabolism and Endocrinology, Nanchang, 330008, Jiangxi, China.
Molecular and cellular endocrinology
|February 8, 2025
概括
乌比基特异性蛋白酶7 (USP7) 沉默通过通过GATA3 deubiquitylation将巨细胞极化从M1转移到M2,从而改善糖尿病足 (DFU) 的伤口愈合. 这项研究为DFU治疗提供了新的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 巨细胞两极分化严重影响伤口愈合,异常两极分化导致糖尿病足 (DFU) 的愈合延迟.
- 乌比基特异性蛋白酶7 (USP7) 已成为与DFU相关的炎症过程的潜在调节者.
- 了解USP7在巨分化中的作用对于开发有效的DFU治疗至关重要.
研究的目的:
- 研究USP7在糖尿病足 (DFU) 进展期间调节巨分化中的作用.
- 阐明USP7在DFU中影响巨细胞极化和伤口愈合的分子机制.
- 评估针对USP7的治疗潜力,以增强DFU中的伤口愈合.
主要方法:
- 基因和蛋白质表达分析通过qRT-PCR和西方布洛特.
- 在体外 (高葡萄糖治疗) 和体内 (胰岛素注射) 建立了糖尿病 (DM) 的模型.
- 巨细胞极化标志物通过流细胞计评估;HUVEC功能通过CCK8,伤口愈合和管形成试验进行评估.
- 使用共免疫沉 (Co-IP) 研究的USP7-GATA3相互作用.
主要成果:
- 在DFU组织和高葡萄糖处理的巨细胞中,USP7过度表达.
- 在DFU小鼠中,USP7缺乏通过抑制M1和促进M2巨细胞两极分化,促进了伤口愈合.
- 通过调节巨细胞极化,USP7 Knockdown 在高葡萄糖条件下增强了HUVEC的增殖,迁移和血管生成.
- 通过deubiquitination,USP7稳定了GATA3蛋白,而GATA3的过度表达部分逆转了USP7的淘汰效应.
结论:
- 通过促进M2和抑制M1巨细胞极化,USP7静音增强DFU伤口愈合.
- USP7通过duebiquitinating和稳定GATA3.3来调节巨细胞两极分化.
- 针对USP7代表了一种有前途的治疗策略,用于改善糖尿病足的伤口愈合.
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