IL-10通过LFA-3和HLAII类抑制间接调节CD4+CD28nullT淋巴细胞的功能活动
Alejandra García-Torre1,2,3, Eva Bueno-García1,2,3, Marco A Moro-García2,3,4
1Immunology Department, Hospital Universitario Central de Asturias, Oviedo, Spain.
Immunology
|June 26, 2024
概括
互白素-10 (IL-10) 限制了CD4+CD28,在慢性心力衰竭 (CHF) 中没有T淋巴细胞扩张. 较高的IL-10/瘤坏死因子 (TNF) 比率与CHF患者的T淋巴细胞水平降低相关.
科学领域:
- 免疫学 免疫学 免疫学
- 心脏病学 心脏病学
- 分子生物学分子生物学
背景情况:
- CD4+CD28无T淋巴细胞在慢性心力衰竭 (CHF) 患者中扩大.
- 这些细胞产生促炎性细胞因子,可能导致CHF的发病.
- 瘤坏死因子 (TNF) 参与了CD28的损失,而INTERLEUKIN-10 (IL-10) 可能会限制T淋巴细胞的反应.
研究的目的:
- 研究IL-10/TNF比率在调节CHF中CD4+CD28nullT淋巴细胞水平中的作用.
- 探索IL-10对CD4+CD28零T淋巴细胞增殖和细胞因子生产的体外影响.
主要方法:
- 血清IL-10和TNF水平测量了65名心血管疾病患者的血清IL-10.
- 在IL-10/TNF比率和CD4+CD28无T淋巴细胞计数之间进行了相关性分析.
- 在体外实验中评估了IL-10对抗CD3刺激的T淋巴细胞和HLA-DR,ICAM-1和LFA-3的单细胞表达的影响.
主要成果:
- 患有IL-10/TNF比率≥1的CHF患者与比率<1.1的患者相比,表现出显著较低的CD4+CD28零T淋巴细胞水平.
- 在体外,IL-10降低了用抗CD3刺激的CD4+CD28零T淋巴细胞的增殖.
- IL-10治疗前抑制了TNF的产生,并减少了单细胞上的HLAII类和LFA-3表达,模仿了阻断CD2/LFA-3共刺激的效果.
结论:
- IL-10/TNF比率是调节CD4+CD28零T淋巴细胞扩张的重要因素.
- IL-10对CD4+CD28无T淋巴细胞产生抑制作用,可能通过调节HLAII类和LFA-3表达.
- 向IL-10或相关途径可能为治疗CD4+CD28null T淋巴细胞驱动性炎症的治疗策略提供治疗方法.
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