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微RNA-409-3p/BTG2信号轴在肥胖小鼠中改善受损的血管生成和伤口愈合

Furkan Bestepe¹, George F Ghanem¹, Colette M Fritsche¹

¹Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA.

FASEB journal : official publication of the Federation of American Societies for Experimental Biology

|February 8, 2024

概括

微RNA-409-3p通过抑制BTG2.2,加剧糖尿病伤口愈合中的血管生成障碍. 在2型糖尿病模型中,抑制这种microRNA促进了伤口的关闭和血管的形成.

科学领域:

分子生物学分子生物学
细胞生物学细胞生物学
生物医学科学生物医学科学

背景情况:

伤口愈合依赖于新血管生成,这对于组织修复至关重要.
2型糖尿病 (T2D) 损害了伤口愈合,部分原因是血管生成受损.
微RNAs调节血管生成,在T2D相关的愈合缺陷中具有潜在的作用.

研究的目的:

研究miR-409-3p在糖尿病伤口愈合和血管生成中的作用.
在内皮细胞中识别miR-409-3p的分子标和机制.

主要方法:

在T2D伤口和模型中分析miR-409-3p表达.
使用人类静脉内皮细胞 (HUVEC) 进行体外研究,以评估miR-409-3p对细胞生长,迁移和血管生成的影响.
用mRNA测序和光酶测试来识别和验证miR-409-3p的目标.
在体内研究使用内皮特异性的miR-409-3p淘汰赛小鼠与高血糖.

主要成果:

在T2D不愈合的伤口中,miR-409-3p表达升高.
中和 miR-409-3p 增强了 HUVEC 功能和体外血管生成;过度表达会损害它.
BTG2被确定为miR-409-3p的直接标,其表达与反向相关.
内皮细胞中miR-409-3p缺乏导致mTOR酸化的增加.
在体内,miR-409-3p淘汰的小鼠表现出改善的伤口关闭,血管化和增加的BTG2表达.

结论:

miR-409-3p是糖尿病患者皮肤伤口愈合中血管生成受损的关键调节剂.
向miR-409-3p代表了增强糖尿病伤口修复的潜在治疗策略.

关键词:

在BTG2中使用BTG2.血管新生是因为血管新生.它们是内皮细胞的内皮细胞.微RNAs 是一个微型RNA.肥胖肥胖肥胖肥胖肥胖肥胖肥胖肥胖伤口愈合伤口愈合

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