| Autor: |
Rui Zheng, Yuankun Chen, Yiting Zhang, Sixin Liang, Xiaojuan Zhao, Yiyi Wang, Pengju Wang, Ruotong Meng, Angang Yang, Bo Yan |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Frontiers in Immunology, Vol 14 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1664-3224 |
| DOI: |
10.3389/fimmu.2023.1258156 |
| Popis: |
IntroductionChimeric antigen receptors (CARs) can redirect T cells against antigen-expressing tumors, and each component plays an important role in the function and anti-tumor efficacy. It has been reported that using human sequences or a low affinity of CAR single-chain variable fragments (scFvs) in the CAR binding domains is a potential way to enhance the function of CAR-T cells. However, it remains largely unknown how a lower affinity of CARs using humanized scFvs affects the function of CAR-T cells until recently.MethodsWe used different humanized anti-HER2 antibodies as the extracellular domain of CARs and further constructed a series of the CAR-T cells with different affinity.ResultsWe have observed that moderately reducing the affinity of CARs (light chain variable domain (VL)-based CAR-T) could maintain the anti-tumor efficacy, and improved the safety of CAR therapy both in vitro and in vivo compared with high-affinity CAR-T cells. Moreover, T cells expressing the VL domain only antibody exhibited long-lasting tumor elimination capability after multiple challenges in vitro, longer persistence and lower cytokine levels in vivo.DiscussionOur findings provide an alternative option for CAR-T optimization with the potential to widen the use of CAR T cells. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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