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针对基因编辑应用的紧型CRISPR-Cas12f病毒交付

Allison Sharrar¹, Zuriah Meacham¹, Johanna Staples-Ager¹

¹Acrigen Biosciences Inc., Berkeley, California, USA.

The CRISPR journal

|May 2, 2024

概括

研究人员开发了一个微型CRISPR-Cas12f系统,用于体内基因编辑. 该系统包装在腺相关病毒 (AAV) 载体中,可在各种细胞和患者组织中有效编辑,最小的目标外影响.

科学领域:

分子生物学分子生物学
基因编辑技术的技术
生物技术是生物技术.

背景情况:

针对遗传疾病的体内基因编辑需要有效地将CRISPR-Cas系统传递到向细胞和器官.
基因编辑的临床进展包括ex vivo疗法和通过脂质纳米颗粒的体内肝脏输送.
腺关联病毒 (AAV) 载体对于在众多器官中传递遗传物质具有多样性,但大型CRISPR-Cas系统带来了包装挑战.

研究的目的:

开发适用于AAV包装和体内应用的紧型CRISPR-Cas基因编辑系统.
为了证明微型CRISPR-Cas12f系统用于治疗基因编辑的有效性和安全性.
扩大CRISPR基因编辑的潜力,用于不同的遗传标和器官.

主要方法:

设计了一个微型CRISPR-Cas12f系统,具有扩展的准能力.
开发了一个单一的AAV载体,对四个治疗点编码Cas12f核酶和指导RNA.
在各种细胞系,患者纤维细胞和初级肝细胞中验证了基因编辑效率.
评估了非目标编辑,以评估开发系统的安全概况.

主要成果:

通过AAV.提供的微型Cas12f系统证明了有效的CRISPR基因编辑.
在单个AAV粒子中成功编码和传递了Cas12f系统和指导RNA.
在多种细胞类型中实现基因编辑,包括患者衍生细胞和初级肝细胞.
确认了低水平的非目标编辑,这表明了有利的安全概况.

结论:

在AAV中包装的微型CRISPR-Cas12f系统代表了体内基因编辑的重大进步.
这项技术有助于在各种细胞类型和器官中进行高效和有针对性的基因编辑.
这些发现为CRISPR编辑在治疗遗传疾病中的更广泛应用铺平了道路.

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