CD318/CD6轴限制了1型糖尿病岛屿自身抗原特异的人类T细胞激活
Jeong-Su Do1, David Arribas-Layton1, Jemily Juan2
1Department of Immunology and Theranostics, Duarte, USA; Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope, Duarte, California, USA.
Journal of autoimmunity
|April 20, 2024
概括
CD318是一种CD6连接体,在髓状树突细胞上表达,并抑制T细胞增殖. 这一发现表明CD318是1型糖尿病治疗的潜在免疫检查点目标.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 这是一种自身免疫力.
背景情况:
- CD6是一种T细胞糖蛋白,对免疫调节至关重要.
- CD318是已知的CD6配体,但其在人类T细胞免疫中的作用尚未得到充分研究.
- 以前的研究表明CD318的表达仅限于特定的组织,而不是抗原呈现细胞.
研究的目的:
- 研究CD318在人类免疫细胞中的表达和功能.
- 探索CD318/CD6轴在T细胞介导的自身免疫性疾病中的作用.
- 为了确定1型糖尿病的潜在治疗点.
主要方法:
- 流细胞计检测CD318表达在周围血液单核细胞.
- 在体外刺激单细胞和树突细胞 (DCs) 用脂多糖 (LPS) 和干扰素- (IFNγ).
- 试验旨在评估复合CD318和CD318+髓状树突细胞 (mDCs) 对T细胞增殖的影响,包括针对GAD65.65特有的自反应T细胞.
主要成果:
- 发现CD318在髓状树突细胞 (mDCs) 的亚群中得到表达.
- 激活后,CD318表达可以诱导单细胞和体外衍生DCs.
- 再组合CD318抑制了T细胞功能,CD318+mDC抑制了针对GAD65.5的自反应性T细胞的增殖.
结论:
- CD318在人类髓状树突细胞上具有以前未被识别的表达.
- CD318/CD6轴在T细胞介导的自身免疫性疾病中起着新的免疫调节作用.
- CD318代表了1型糖尿病干预的潜在免疫检查点抑制剂标.
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