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表达tie2的单细胞/巨细胞在慢性缺血性脑组织中促进血管生成

Chuyang Tai¹, Cong Ling¹, Yang Yang²

¹Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-Sen University, No. 600 Tianhe Road, Tianhe District, Guangzhou, , Guangdong, People's Republic of China.

Cell & bioscience

|May 21, 2025

概括

Tie2表达单细胞/巨细胞 (TEMs) 在慢性缺血性脑组织中促进血管生成. 该miR-126-5p/TRPS1/ANGPT2通路调节TEM招募,改善大脑血液 perfusion 和脑血管疾病的认知功能.

科学领域:

神经科学是一个神经科学.
免疫学免疫学免疫学
血管生物学血管生物学

背景情况:

超过一半的慢性缺血性脑血管疾病 (CICD) 患者的重血管化潜力较差.
Tie2表达单细胞/巨细胞 (TEM) 促进瘤中的血管生成,但它们在慢性缺血性脑组织 (CIBT) 中的作用尚不清楚.
招募TEM到CIBT的机制需要阐明.

研究的目的:

调查CIBT中TEMs的亲血管效应.
确定TEM招聘到CIBT的监管机制.
探索针对已识别的途径的治疗潜力.

主要方法:

在CICD患者的血液中分析了TEM比例.
将TEM与HUVEC共同培养,并将TEM注射到裸体小鼠中,以评估亲血管性效应.
进行了分子生物学实验,以验证ANGPT2-Tie2轴调节.
利用慢性缺血的老鼠模型来确认TEM招募和功能结果.

主要成果:

在小鼠中,TEM显著增加了HUVEC活力和CIBT血管生成 (CD31表达).
miR-126-5p直接针对TRPS1,该TRPS1调节ANGPT2的表达.
在体内,miR-126-5p agomir增加了TEM透,上调了亲血管性因素,并改善了大脑血液输液和大鼠的认知功能.

结论:

在CIBT中,TEMs通过对体信号传递促进血管生成.
该miR-126-5p/TRPS1/ANGPT2通路是TEM招募到CIBT的关键调节器.
这一途径代表了在CICD中改善重血管化的潜在治疗目标.

关键词:

血管新生的产生.慢性缺血性脑血管疾病是一种慢性缺血性脑血管疾病.脑筋神经血管形成症 (ENCEPHALOMYOSYNANGIOSIS) 是一种脑筋神经血管形成的疾病.缺血性中风缺血性中风结合2表达的单细胞/巨细胞

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