造血和埃索诺菲尔特异性的LNK ((SH2B3) 缺乏会促进埃索诺菲利亚和动脉血栓形成
Huijuan Dou1, Ranran Wang1, Mojdeh Tavallaie1
1Molecular Medicine, Columbia University Medical Center, New York, NY.
Blood
|December 14, 2023
概括
造血性LNK缺乏会通过增加乙酸细胞和细胞外陷形成,加速动脉血栓形成. 埃索诺菲尔特异性LNK缺乏症也会促进血栓形成,突出突出埃索诺菲尔.
科学领域:
- 心血管研究研究心血管研究
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 埃索诺菲利亚与心血管疾病有关,但因果关系尚不清楚.
- 一种常见的LNK基因变异 (R262W,T等位基因) 与乙酸友爱症和动脉血性疾病有关.
- 在小鼠中LNK缺乏会加速动脉样硬化和血栓形成.
研究的目的:
- 为了研究埃索诺菲尔在动脉血栓形成中的作用,在患有血液形成性LNK缺乏症的小鼠中.
- 确定LNK在有关血栓形成的乙氨基酸中所扮演的特定角色.
- 评估LNK在氨基酸激活和血栓形成中的作用对人类的相关性.
主要方法:
- 在小鼠中的血液构造性LNK缺乏模型.
- 使用抗Siglec-F抗体和基因突变 (ΔdbIGata1) 减少埃索诺菲尔.
- 通过eoCre交叉,产生特定于eosinophil的LNK缺乏的小鼠 (LnkΔeos).
- 对血栓组成,乙酸细胞外细胞陷 (EETosis) 和中性细胞外细胞陷 (NETosis) 的分析.
- 人类诱导的多能干细胞衍生异osinophil 实验.
主要成果:
- 造血性LNK缺乏增加了循环和激活的乙氨基酸,导致加速的动脉血栓形成.
- 在LNK缺乏的小鼠中,乙氨基的枯竭或缺失显著减少了血栓形成.
- 乙氨基的枯竭减少了中性粒细胞外细胞陷形成 (NETosis) 在瘤中.
- 埃索诺菲尔特异性LNK缺陷 (LnkΔeos) 导致了埃索诺菲利亚,增加了EETosis和NETosis,并加速了动脉血栓形成.
- 与LNK(CC) 细胞相比,人类的LNK(TT) 乙氨基酸表现出增加的激活和EETosis.
结论:
- 在血液形成的LNK缺乏症中,有eosinophilia,EETosis和atherothrombosis之间存在直接联系.
- 乙氨基酸LNK在抑制动脉血栓形成方面发挥着至关重要的作用.
- 向乙氨基基基功能可能为心血管事件提供新的治疗策略.
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