嵌合抗原受体
CD38
多发性骨髓瘤
抗原
医学
信号
免疫疗法
受体
癌症研究
免疫学
癌症免疫疗法
生物
免疫系统
干细胞
内科学
细胞生物学
川地34
作者
Nathalie Roders,Cecilia Nakid-Cordero,Fabio Raineri,M. Fayon,Audrey Abecassis,C. Choisy,Elisabeth Nelson,Claire Maillard,David Garrick,Alexis Talbot,Jean‐Paul Fermand,Bertrand Arnulf,Jean-Christophe Bories
出处
期刊:Cancer immunology research
[American Association for Cancer Research]
日期:2024-01-30
标识
DOI:10.1158/2326-6066.cir-23-0839
摘要
Abstract Chimeric antigen receptor T-cell (CAR-T) therapy for multiple myeloma (MM) targeting B-cell maturation antigen (BCMA) induces high overall response rates. However, relapse still occurs and novel strategies for targeting MM cells using CAR-T are needed. SLAMF7 (also known as CS1) and CD38 on tumour plasma cells represent potential alternative targets for CAR-T in MM, but their expression on activated T cells and other hematopoietic cells raises concerns about the efficacy and safety of such treatments. Here, we used CRISPR/Cas9 deletion of the CD38 gene in T cells and developed DCAR, a double CAR system targeting CD38 and CS1 through activation and co-stimulation receptors, respectively. Inactivation of CD38 enhanced the anti-MM activity of DCAR-T in vitro. Edited DCAR-T showed strong in vitro and in vivo responses specifically against target cells expressing both CD38 and CS1. Further, we provide evidence that, unlike anti-CD38 CAR-T, which elicited a rapid immune reaction against hematopoietic cells in a humanized mouse model, DCAR-T showed no signs of toxicity. Thus, DCAR-T could provide a safe and efficient alternative to anti-BCMA CAR-T to treat MM patients.
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