1型糖尿病取决于转录抑制剂Bcl6的CD4驱动的表达
Dudley H McNitt1, Jonathan M Williams1, Joseph G Santitoro1
1Department of Medicine, Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, TN.
在CD4+细胞中准BCL6可以预防1型糖尿病的发展. 在这些细胞中删除BCL6会破坏生殖中心的形成和自身抗体的产生,为1型糖尿病提供了一种新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
- 遗传学 是一个遗传学.
背景情况:
- 高亲和度小岛自身抗体和生殖中心 (GCs) 参与1型糖尿病的发病.
- 对于GC反应至关重要的T卵泡辅助细胞 (Tfh) 依赖BCL6成熟,并且在1型糖尿病中发生变化.
研究的目的:
- 研究BCL6在CD4+T细胞在1型糖尿病发展中的作用.
- 为了确定CD4驱动的BCL6删除是否可以预防1型糖尿病.
主要方法:
- 产生的Bcl6fl/fl-CD4.Cre.NOD小鼠与CD4驱动的删除Bcl6.
- 评估胰岛炎,三级淋巴体结构,免疫细胞群 (CD4 +,CD8 +,B细胞),GC B细胞,Tfh细胞和抗胰岛素自身抗体.
主要成果:
- Bcl6fl/fl-CD4.Cre.NOD小鼠完全受到1型糖尿病的保护.
- 由CD4驱动的BCL6丧失显著降低了GC B细胞和Tfh细胞数量.
- 在这些小鼠中,自发的抗胰岛素自身抗体产生被削弱了.
结论:
- 在小鼠模型中,CD4驱动的Bcl6缺失可以预防1型糖尿病.
- BCL6是1型糖尿病发病过程中Tfh和GCB细胞功能的关键调节者.
- BCL6代表了1型糖尿病的新型治疗标.
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