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在巨细胞中,血管素转化酶的高表达会加剧糖尿病小鼠的间损伤

Takayuki Uemura¹, Keigo Tomita², Masahiro Eriguchi¹

¹Department of Nephrology, Nara Medical University, Nara, Japan.

Biochemical and biophysical research communications

|January 21, 2026

概括

巨细胞表达的血管酶转化酶 (ACE) 导致糖尿病病 (DKD) 中的损伤. 准这种巨细胞ACE可能为DKD提供一种新的治疗策略.

科学领域:

腎臟病學 (nephrology) 是一種醫學專業.
免疫学免疫学免疫学
心血管研究研究心血管研究

背景情况:

ангиотензин转化酶 (ACE) 在调节血管度和损伤方面发挥着关键作用,特别是在糖尿病病 (DKD) 中.
虽然内皮和管状ACE在DKD中的作用已得到认可,但ACE在巨细胞中的特定贡献在很大程度上仍未被描述.
现有研究表明,管状ACE删除可改善糖尿病模型中的管状间隙损伤,但巨细胞衍生的ACE的影响尚不清楚.

研究的目的:

研究表达在巨细胞中的血管素转化酶 (ACE) 在糖尿病病 (DKD) 病原发生中的特定作用.
为了阐明巨细胞ACE是否有助于白色素尿和管间纤维化,独立于DKD中的球过和管状ACE.

主要方法:

利用糖尿病ACE 10/10小鼠,这些小鼠被设计成只在骨髓单细胞中过度表达ACE,而在其他组织中缺乏ACE.
在糖尿病WT和ACE 10/10小鼠中评估了球过,细胞结构,白色素尿和管间纤维化.
采用流细胞计量来量化ACE表达在脏居民和腹巨细胞,并进行了体外研究ACE过度表达的巨细胞,用脂多糖刺激.

主要成果:

在糖尿病ACE 10/10小鼠中缺少内皮ACE消除了球过和保存了细胞结构,但白色素尿水平与糖尿病WT小鼠相似.
尽管缺乏管状ACE,但与糖尿病WT小鼠相比,管状纤维化没有显著改变.
在糖尿病WT和ACE 10/10小鼠中,内巨细胞的ACE表达显著增加,而腹腔巨细胞的ACE水平保持不变.
在体外,过度表达ACE的巨细胞在刺激时表现出增加的互白素-6产量和增强的化学反应.

结论:

在脏寄存的巨细胞中表达的ACE有助于DKD中的近接管状白蛋白尿和管间纤维化.
这种巨细胞介导的贡献独立于球过和管状ACE发生.
向巨细胞衍生的ACE,尽管占脏ACE总量的很小一部分,但为DKD提供了一个潜在的新疗法策略.

关键词:

专辑蛋白尿症是什么意思 ангиотензин转化酶-转化酶-转化酶糖尿病脏病糖尿病脏病纤维化纤维化纤维化巨细胞是一个巨细胞.

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