CAR-T(CAR-T)细胞疗法在非肿瘤性疾病中的应用
Chimeric antigen receptor T (CAR-T) cell therapy in non-oncological diseases.
CAR-T(CAR-T)细胞在血液系统恶性肿瘤中的应用推动了这种免疫治疗形式的显著进展。
CELL INTELLIGENCE · 肿瘤细胞治疗研究
肿瘤细胞治疗研究
英文原题:Tunable universal OR-gated CAR T cells for AML.
Tunable universal OR-gated CAR T cells for AML.
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急性髓系白血病(AML)以抗原异质性和预后差为特征。在此,为了应对 AML 的异质性,我们使用 split、universal、programmable(SUPRA)嵌合抗原受体(CAR)平台,将 FLT3 与 CD33 通过组合 OR-gate 方法联合起来。该 split 平台提供了对激活水平的可调性以及多重靶向能力。我们在一组靶细胞系中表征了不同 SUPRA CAR 适配器针对每个靶点的特异性和敏感性。我们的结果表明,该 CAR 系统能够有效靶向两种抗原,其疗效与传统 CAR 相当,同时减少设计针对多种抗原的 CAR-T 细胞的工程负担。此外,我们能够表征一个有效剂量范围,在该范围内针对造血干/祖细胞的脱靶细胞毒性被最小化。我们的 SUPRA OR gate 有潜力为治疗 AML 提供一种有效且更安全的解决方案。
Acute myeloid leukemia (AML) is characterized by antigen heterogeneity and poor prognosis.
Here, to tackle the heterogeneity of AML, we combined FLT3 with CD33 in a combinatorial OR-gate approach using our split, universal, programmable (SUPRA) chimeric antigen receptor (CAR) platform. The split platform affords tunability over activation levels and multiplexed targeting.
We characterized the specificity and sensitivity of different SUPRA CAR adapters for each target across a panel of target cell lines.
Our results demonstrate that this CAR system can effectively target two antigens with equivalent efficacy to conventional CARs while reducing the engineering burden of designing CAR T cells against multiple antigens.
Furthermore, we can characterize an effective dose range where off-target cytotoxicity against hematopoietic stem and progenitor cells is minimized.
Our SUPRA OR gate has the potential to provide an effective and safer solution to treating AML.
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