用于 (epi) 基因组编辑和基因治疗的mRNA跨拼接双AAV载体
Lisa Maria Riedmayr1, Klara Sonnie Hinrichsmeyer1, Stefan Bernhard Thalhammer1
1Department of Pharmacy - Center for Drug Research, LMU Munich, Munich, 81377, Germany.
Nature communications
|October 18, 2023
概括
这项研究介绍了REVeRT,这是一种新的双腺相关病毒 (AAV) 载体技术,用于高效的基因传递. REVeRT克服了当前方法的局限性,使得像CRISPRa.a.这样的大基因能够在体内有效表达.
科学领域:
- 分子生物学分子生物学
- 基因治疗 基因治疗
- 病毒载体技术 病毒载体技术
背景情况:
- 传递大型基因,包括CRISPR-Cas激活器 (CRISPRa),通常需要双重腺相关病毒 (AAV) 载体.
- 现有的双重AAV方法面临挑战,例如复制效率低,产生外来蛋白质,以及在选择分离地点时的灵活性有限.
研究的目的:
- 开发和验证一种新的双AAV载体系统,REVeRT (通过mRNA转接复合),以有效地在体内传递和表达大型基因.
- 为了证明REVeRT在各种实验模型和治疗应用中的灵活性和效率.
主要方法:
- 开发一种使用mRNA转剪切用于基因重组 (REVeRT) 的双AAV载体系统.
- 测试REVeRT在复制分裂基因中的效率在体外,人体器官和体内小鼠模型中.
- 评估REVeRT在各种小鼠组织中输送CRISPRa模块的能力,以及在Stargardt病小鼠模型中重建ABCA4基因.
主要成果:
- REVeRT在分裂部位选择和各种分裂基因在不同模型中的有效重组方面表现出高度灵活性.
- 在多个小鼠组织和器官中,使用单一或多重方法实现了CRISPRa模块的功能复合.
- 在Stargardt病小鼠模型中,通过静脉内注射完成了全长ABCA4的成功复制.
结论:
- REVeRT是一种高度灵活和高效的双AAV载体技术,用于体内基因传递和表达.
- 这项技术克服了当前双重AAV系统的局限性,显示了基础研究和临床基因治疗应用的巨大潜力,包括罕见的遗传疾病.
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