盐或 ангиотензин II 的水平升高会诱导 CD38+ 原生免疫细胞在有颗粒细胞 - 巨细胞殖民地刺激因子的情况下
Hannah L Smith1, Bethany L Goodlett1, Shobana Navaneethabalakrishnan1
1Department of Medical Physiology, Texas A&M School of Medicine, Bryan, TX 77807, USA.
Cells
|August 9, 2024
概括
颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 驱动CD38+先天性免疫细胞的增加,如巨细胞和树突细胞,在盐敏感和血管酶二诱导的高血压中. 这些CD38+细胞可能是治疗高血压的关键点.
科学领域:
- 免疫学 免疫学 免疫学
- 腎臟病學 (nephrology) 是一種醫學專業.
- 心血管研究研究心血管研究
背景情况:
- 高血压影响了近一半的成年人,增加了心血管疾病和损伤的风险.
- 盐敏感高血压 (SSHTN) 和血管素II诱导的高血压 (A2HTN) 都涉及免疫系统的激活和脏免疫细胞的透.
- 特定的先天免疫细胞亚群,如巨细胞和树突细胞 (DCs),表达分化集群38 (CD38),在血压调节中发挥关键作用,但它们的精确功能和激活途径在高血压中仍然不清楚.
研究的目的:
- 研究CD38+先天性免疫细胞在SSHTN和A2HTN的病变发生中的作用.
- 确定单细胞在高血压条件下如何分化为CD38+巨细胞和DC细胞.
- 确定特定的亲高血压免疫细胞亚型,可以作为治疗点.
主要方法:
- 骨髓衍生单细胞 (BMDMs) 用颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 培养,并在体外用盐或血管酶二 (A2) 处理.
- 在SSHTN和A2HTN的小鼠模型中进行了GM-CSF预备的BMDM的采用转移.
- 流细胞计用于分析脏免疫细胞群,特别是M1巨细胞和2型常规DCs (cDC2s),以及它们的CD38表达.
主要成果:
- 在体外,用盐或A2治疗的GM-CSF原料的BMDMs显示CD38+巨细胞和CD38+DCs的增加.
- 这些原始细胞的采用转移在高血压小鼠的脏中增加了CD38+巨细胞和CD38+DCs.
- 流细胞计证实了SSHTN或A2HTN小鼠的脏中M1巨和cDC2s的升高,包括它们的CD38+子集,在体外也发现了类似的结果.
结论:
- 颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 对于通过盐或血管新生素II诱导CD38+先天性免疫细胞至关重要.
- CD38表达似乎可以区分亲高血压免疫细胞种群,特别是M1巨细胞和cDC2s.
- 向CD38+ M1巨细胞和CD38+cDC2s,为盐敏感性和血管激素II诱导的高血压提供了一个潜在的新疗法策略.
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