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层次性瘤激活的纳米CRISPR-Cas13a促进了高效的微RNA破坏,以实现多途径介导的瘤抑制

Xiaowei Liu¹, Suleixin Yang¹, Li Wang¹

¹State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P. R. China.

|June 7, 2023

概括

这项研究开发了一种纳米CRISPR-Cas13a系统 (CHAIN) 用于癌症基因治疗. 通过准microRNA-21,CHAIN有效地抑制瘤生长,为癌症治疗提供了一种有前途的新方法.

科学领域:

生物技术是生物技术.
分子生物学分子生物学
纳米医学是一种纳米医学.

背景情况:

在癌症基因疗法中,CRISPR-Cas13a提供了低脱效应的RNA敲击.
目前的癌症疗法在瘤发生过程中与多突变途径作斗争.

研究的目的:

制造一个层次性瘤激活的纳米CRISPR-Cas13a (链) 用于通过微RNA破坏进行多途径瘤抑制.
为了评估CHAIN在肝细胞癌小鼠模型中的疗效.

主要方法:

使用化聚乙胺 (PF33) 构建链,将CRISPR-Cas13a大质密集到向microRNA-21 (miR-21) 的大质中.
用修饰的氨酸衍生物 (GPH) 包裹核心,形成CHAIN.
在体内给予CHAIN以评估瘤细胞吸收,内体逃生和基因淘汰功效.

主要成果:

链表现出长期循环,增强瘤吸收和高效的内分泌/溶酶体逃生,毒性最小.
通过CHAIN恢复PDCD4和RECK的有效miR-21敲击,抑制MMP-2,癌症的扩散,迁移和入侵.
链治疗显著抑制了miR-21的表达,并挽救了多路径,导致肝细胞癌小鼠模型中的大量瘤生长抑制.

结论:

在癌症治疗中,CHAIN平台通过有效干扰瘤性微RNA显示出有前途的潜力.
通过破坏miR-21和恢复抗瘤通路,CHAIN有效地抑制瘤生长.
这种纳米CRISPR-Cas13a系统代表了癌症基因治疗的潜在强大和安全的工具.

关键词:

这就是CRISPR-Cas13a.癌症治疗治疗治疗癌症微RNA 干扰的破坏多路径规则的多路径规则瘤激活的激活瘤

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