通过减少合成circRNA中的污染物来缓解细胞功能障碍,以实现高效的基于mRNA的细胞重编程.
Ziwei Zhang1, Weiyu Li1,2, Xiangyu Ren1,3
1CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Haidian District, Beijing, 100190, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 5, 2025
概括
合成的循环RNA (circRNA) 杂质会触发免疫反应. 一种新的净化方法可以去除这些污染物,从而提高 circRNA 疗效,用于再生医学和癌症免疫疗法应用.
科学领域:
- 生物技术是生物技术.
- 在RNA治疗方面,RNA疗法.
- 免疫学 免疫学 免疫学
背景情况:
- 合成循环RNA (circRNA) 显示出治疗潜力,但受到杂质的阻碍.
- 像双链RNA和5'三酸盐这样的免疫原副产品激活先天免疫反应,降低circRNA的疗效.
- 感应RNA的途径与对这些污染物的免疫反应有关.
研究的目的:
- 为了确定合成circRNA中的关键免疫原副产品.RNA.
- 开发和验证清除这些污染物的净化策略.
- 评估净化circRNA在细胞重编程和免疫治疗中的性能.
主要方法:
- 在合成circRNA中识别免疫原副产品.RNA.
- 开发一个多步骤的净化过程,包括酶处理和基于纤维素的过.
- 在诱导多能干细胞 (iPSC) 重编程和仿真抗原受体 (CAR) T 细胞应用中对纯化circRNA的评估.
主要成果:
- 净化过程有效地去除了关键的免疫原体副产品,显著降低了免疫激活.
- 环RNA的制造产量增加了十倍以上.
- 纯化的circRNA在iPSC重编程中实现了超过300%的效率,并且进行了最小的转染.
- 纯化的circRNA在T细胞中表现出高且持久的CAR表达,从而产生强大的抗瘤活性.
结论:
- 已经建立了一个可扩展和可靠的治疗级circRNA净化策略.
- 纯化的circRNA显示出在再生医学和癌症免疫疗法中应用的重大前景.
- 这种净化方法克服了合成RNA疗法的临床转化中的重大障碍.
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