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在急性髓性白血病中,PD-1H/VISTA调解免疫逃避

Tae Kon Kim^1,2,3,4,5,6, Xue Han^7,8,9, Qianni Hu¹

¹Division of Hematology/Oncology, Department of Medicine.

The Journal of clinical investigation

|December 7, 2023

概括

编程死亡-1同源 (PD-1H) 在急性髓性白血病 (AML) 中高度表达,并通过抑制免疫反应促进癌症生长. 阻止PD-1H可以抑制AML的进展,并增强抗癌免疫力.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
血液学血液学血液学

背景情况:

急性髓性白血病 (AML) 是一种具有挑战性的癌症,原因是它对当前疗法具有抗性.
现有的治疗方法,如化疗,向疗法和抗编程细胞死亡蛋白 (anti-PD) 疗法,有效性有限.
在AML治疗中,急需新的治疗点.

研究的目的:

调查编程死亡-1同类 (PD-1H) 在AML病变发生过程中的作用.
评估PD-1H作为AML的潜在治疗标.
探索涉及PD-1H阻塞的组合疗法.

主要方法:

在AML患者骨髓样本中分析PD-1H表达.
使用合成和人性化的AML小鼠模型.
采用抗体阻塞和基因淘汰策略来抑制PD-1H.
评估PD-1H调制对T细胞活性和AML进展的影响.

主要成果:

PD-1H在AML爆发上表达很高,但在正常的髓状细胞或T细胞上表达不高.
在AML细胞中PD-1H的过度表达通过逃避T细胞免疫力来促进瘤生长.
在AML细胞或宿主髓状细胞上除去PD-1H显著抑制了AML的进展.
将PD-1H阻塞与抗PD疗法结合起来,显示出协同作用的抗白血病效应.

结论:

通过调解免疫逃避,PD-1H是AML进展的关键驱动因素.
准PD-1H代表了AML的一个有前途的治疗策略.
PD-1H阻断和抗PD的联合治疗可以克服AML的治疗耐药性.

关键词:

癌症免疫疗法癌症免疫疗法造价刺激是一种成本刺激.免疫学免疫学免疫学在白血病中,白血病.在瘤学瘤学.

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