异构性CD4 T细胞维持有效的BK多重瘤病毒特异性CD8 T细胞反应在移植接受者中
Manon Dekeyser1,2,3, Marie-Ghislaine de Goër de Herve1,2, Houria Hendel-Chavez1,2
1INSERM 1186, Gustave Roussy Institute, Villejuif, France.
Kidney international reports
|August 19, 2024
概括
患有BK多重瘤病毒相关脏病的脏移植接受者表现出耗尽的T细胞. 异性CD4 T细胞可以帮助恢复T细胞功能并控制BKPyV复制,可能会阻止BKPyVAN.
科学领域:
- 免疫学 免疫学 免疫学
- 移植免疫学 移植免疫学
- 病毒学 病毒学
背景情况:
- 结核多重瘤病毒相关性病 (BKPyVAN) 是接受者的移植损失的主要原因.
- BKPyVAN与高的BK多瘤病毒 (BKPyV) 复制水平有关.
- 了解对BKPyV的免疫反应对于预防BKPyVAN至关重要.
研究的目的:
- 在移植接受者 (KTRs) 中研究BKPyV特异性T细胞的功能和表型.
- 探索BKPyVAN中T细胞耗尽和人类白细胞抗原 (HLA) 分歧的作用.
- 评估异性T细胞在控制BKPyV重新激活方面的潜力.
主要方法:
- 根据BKPyV的重新激活水平分类的100个KTR的前性研究.
- 评估BKPyV特定的CD4和CD8T细胞增殖,细胞因子分泌和细胞毒性.
- 分析T细胞抑制受体表达和HLAII类供体-受体差异.
主要成果:
- 生物检测证明的BKPyVAN (bp-BKPyVAN) 与受损的BKPyV特异性T细胞反应 (增殖,细胞因子,细胞毒性) 相相关.
- 在bp-BKPyVAN中的T细胞表现出一种枯竭的表型,具有抑制受体的过度表达 (PD1,CTLA-4,TIGIT,TIM-3).
- 较低的HLAII类分歧与T细胞功能障碍有关;较高的分歧支持异性CD4T细胞对BCPyV特异性CD8T细胞的帮助.
结论:
- 全基性CD4 T细胞可以在KTR中维持BKPyV特异性的CD8 T细胞反应.
- 这种T细胞的帮助可能会改善BKPyV在移植中的复制控制.
- 通过全源性帮助恢复T细胞功能可以预防BKPyVAN.
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