向酸途径可以通过重新连接全活性T细胞代谢来缓解移植与宿主疾病
Saeed Daneshmandi1,2, Eun Ko3, Qi Yan1
1Department of Cell Stress Biology, and.
JCI insight
|December 8, 2025
概括
酸通路 (PPP) 驱动了T细胞在移植对宿主疾病 (GvHD) 中的增殖. 在PPP中抑制6酸酸脱酶 (6PGD) 酶可以降低GvHD的严重程度,同时保持抗瘤作用.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢途径 代谢途径
- 细胞代谢的细胞代谢.
背景情况:
- 在急性移植与宿主疾病 (aGvHD) 中,甘油分解为T细胞提供燃料,但下游葡萄糖代谢的作用尚不清楚.
- 向葡萄糖分解是有毒的;替代途径需要对aGvHD调节进行调查.
- 酸路径 (PPP) 是一种关键的替代葡萄糖代谢路径.
研究的目的:
- 研究酸通路 (PPP) 在aGvHD.期间T细胞增殖中的作用.
- 在PPP中确定潜在的治疗目标,以减轻aGvHD.
- 评估PPP抑制对移植与瘤 (GvT) 效应的影响.
主要方法:
- 单细胞RNA测序用于识别T细胞在全原造血细胞移植 (allo-HCT) 期间上调的途径.
- aGvHD和异种GvHD的小鼠模型,以评估疾病严重程度和死亡率.
- 在PPP阻塞时评估T细胞增殖和亡的功能性测试.
- 使用6-aminonicotinamide (6AN) 的 6-酸酸脱酶 (6PGD) 的药理抑制.
主要成果:
- 在HCT后的异性T细胞中,PPP被上调.
- 在6PGD中,捐赠者T细胞缺陷显著降低了aGvHD的严重程度和死亡率.
- PPP阻塞导致扩散停止而没有诱导亡,将新陈代谢从糖解转移.
- 6AN治疗有效降低了aGvHD和异种GvHD的致死率.
- 6PGD抑制保留了移植对瘤 (GvT) 效应.
结论:
- PPP是aGvHD中全基性T细胞增殖和分化的关键调节者.
- 6PGD是减少aGvHD的有希望的治疗标.
- 针对6PGD提供了一种减轻aGvHD的策略,同时保持有益的GvT反应.
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