在哺乳动物细胞中进行翻译调节和治疗生物计算的工程聚甲基替代物
Jiawei Shao1,2,3,4, Shichao Li5, Xinyuan Qiu6
1International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, China. jiaweishao@zju.edu.cn.
Cell research
|January 3, 2024
概括
科学家们开发了一种可编程的基因调节策略,用于控制蛋白质生产. 这种方法使用合成因子来精确管理基因表达,为体内基因疗法和疾病治疗提供了新的可能性.
科学领域:
- 分子生物学分子生物学
- 合成生物学 合成生物学
- 基因治疗 基因治疗
背景情况:
- 细胞翻译启动是基因表达的关键调节点.
- 目前的基因治疗方法往往缺乏对转基因表达的精确,按需控制.
- 开发可控制的基因表达系统对于先进的治疗应用至关重要.
研究的目的:
- 设计一种新的基因调节策略,用于对真核细胞转化启动进行可编程控制.
- 创建响应用户定义触发器的模块化基因开关和细胞内传感器.
- 在哺乳动物细胞和动物模型中证明该系统的治疗潜力,用于体内基因治疗.
主要方法:
- 用含有RNA结合蛋白 (RBP) 特定体的合成控制区域取代天然的多基化信号.
- 使用合成翻译启动因子 (STIF) 与工程RBPs,这些RBPs有条件地与eIF4F结合蛋白 (eIFBPs) 相结合.
- 开发了由特定药物 (例如,grazoprevir) 触发的基因开关和用于亚细胞标记物的蛋白质传感器.
主要成果:
- 在哺乳动物细胞中实现了严格控制,快速和可逆的转基因表达调节.
- 在两种动物模型中证明了治疗疗效,包括通过控制胰岛素表达在糖尿病小鼠中恢复葡萄糖平衡.
- 展示了使用基于翻译的蛋白质传感器来消除瘤细胞的治疗生物计算机的创建.
结论:
- 提出的模块化设计框架为翻译法规提供了前所未有的灵活性.
- 这一策略使可编程基因开关和传感器的工程能够用于各种应用.
- 这种方法可以成为一种新型的体内可编程基因疗法的基础.
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