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Isolation of Next-Generation Gene Therapy Vectors through Engineering, Barcoding, and Screening of Adeno-Associated Virus AAV Capsid Variants

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为改进AAV介导的CAR-T生成量身定制体导向进化技术.

Adrian Westhaus¹, Elena Barba-Sarasua², Yuyan Chen³

¹Translational Vectorology Research Unit, Children's Medical Research Institute, Faculty of Medicine and Health, The University of Sydney, Westmead, NSW, Australia; Infection, Immunity and Inflammation Research and Teaching Department, Great Ormond Street Institute of Child Health, University College, London, UK.

Molecular therapy : the journal of the American Society of Gene Therapy

|December 14, 2024

概括

研究人员开发了一种新的AAV体进化平台,以改善CAR T细胞治疗. 这个平台确定了新的AAVs,AAV-T1和AAV-T2,增强CAR结构集成,以更有效地治疗白血病和脑瘤.

关键词:

在 AAV AAV AAV 中.在CART-T中,我们可以使用CAR-T.工程T细胞工程T细胞工程癌症癌症癌症癌症癌症癌症基因治疗癌症基因治疗细胞治疗疗法细胞治疗疗法指导进化是指导进化的.基因治疗的基因疗法高度结质瘤高度结质瘤合成生物学合成生物学

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科学领域:

基因治疗基因治疗
免疫治疗是一种免疫疗法.
分子生物学分子生物学

背景情况:

化学抗原受体 (CAR) T细胞 (CAR-T) 疗法用于某些白血病.
将CAR集成到T细胞受体α常数 (TRAC) 位点中,可以通过内源元素增强CAR的表达.
腺相关病毒 (AAV) 载体,特别是AAV6,已被用于CAR结构传递.

研究的目的:

为改进CAR基因编辑开发一种新的AAV体定向进化平台.
为了识别新的AAV体变体,以便更有效地将CAR构造集成到TRAC位置.
通过改善载体传递来提高CAR T细胞治疗的疗效.

主要方法:

开发了一个针对AAV囊体选择的定向进化平台.
选择了能够在初级T细胞中有效编辑基因的新型AAV囊变体.
通过使用新的AAV变体,评估了CAR构造集成到TRAC位置的效率.

主要成果:

鉴定出新的AAV capsids,AAV-T1和AAV-T2,与AAV6相比,在T细胞中显示出更高的编辑效率.
实现了在目标上CAR敲击效率的5倍提高.
能够使载体剂量减少5倍,导致对脑瘤细胞系产生高度细胞分解的T细胞.

结论:

新型的AAV囊平台成功识别了用于CAR T细胞治疗的增强型AAV变体.
AAV-T1和AAV-T2显著改善了针对CAR集成的定向基因编辑.
这些进展有望为更有效的CAR T细胞治疗白血病和潜在的其他癌症提供希望.