Design, Synthesis, and Targeted Delivery of an Immune Stimulant that Selectively Reactivates Exhausted CAR T Cells
作者:John Victor Napoleon、Boning Zhang、Qian Luo、Madduri Srinivasarao、Philip S. Low
DOI:10.1002/anie.202113341
日期:2022.4.4
Chronic exposure of CAR T cells to tumor antigens can lead to CAR T cell exhaustion and tumor expansion. To reverse this exhaustion, we have developed two orthogonal strategies to target a potent TLR7 agonist specifically to exhausted CAR T cells. We demonstrate here that both strategies rejuvenate exhausted CAR T cells, leading to dramatic reduction in T cell exhaustion markers (PD-1+Tim-3+) and shrinkage
CAR T 细胞长期暴露于肿瘤抗原可导致 CAR T 细胞耗竭和肿瘤扩张。为了扭转这种疲惫,我们开发了两种正交策略,专门针对用尽的 CAR T 细胞靶向有效的 TLR7 激动剂。我们在此证明,这两种策略都能使衰竭的 CAR T 细胞恢复活力,从而导致 T 细胞衰竭标志物 (PD-1 + Tim-3 + ) 的显着减少和 CAR T 细胞抗性肿瘤的缩小。