低剂量ATG的响应者在1型糖尿病中诱导CD4+T细胞耗尽
Laura M Jacobsen1,2, Kirsten Diggins3, Lori Blanchfield3
1Department of Pediatrics, College of Medicine, University of Florida, Gainesville, Florida, USA.
低剂量的抗胸细胞球蛋白 (ATG) 在1型糖尿病 (T1D) 中保留了调节性T细胞. 像T细胞枯竭和炎症这样的免疫标志物预测了对ATG疗法的代谢反应.
科学领域:
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
- 糖尿病研究 糖尿病研究
背景情况:
- 低剂量的抗胸细胞球蛋白 (ATG) 显示出在近期发病的1型糖尿病 (T1D) 中保持C-和降低HbA1c的潜力.
- 精确的作用机制和对ATG治疗代谢反应的预测因素仍然不完全理解.
研究的目的:
- 为了研究在T1D中ATG给药后的免疫结果.
- 为了确定代谢反应的潜在生物标志物,特别是内源性胰岛素生产的保存.
主要方法:
- 在外周血液中评估基因和蛋白质表达,DNA甲基化和细胞因子概况.
- 对接受ATG,ATG/G-CSF或安慰剂治疗的参与者样本的分析.
- 流细胞计和基因表达分析以描述T细胞种群和功能.
主要成果:
- 治疗ATG保留了调节性T细胞 (Tregs),由稳定的FOXP3 TSDR甲基化和增加的CD4+FOXP3+Tregs表明.
- 受访者显示IL-6,IP-10和TNF-α的暂时增加,并发展出CD4+ T细胞枯竭表型.
- 非响应者具有较高比例的衰老T细胞和改变的EOMES甲基化,表明T细胞耗尽受损.
结论:
- 免疫特征,包括Th1炎症标志物和CD4+T细胞耗尽概况,可以作为T1D中对ATG的临床反应的生物标志物.
- 这些发现为ATG的免疫调节作用和患者分层的潜在策略提供了洞察力.
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