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基因相关的病毒载体用于功能性静脉基因转移在整个非人类灵长类动物大脑中
Miguel R Chuapoco1,2, Nicholas C Flytzanis3,4, Nick Goeden1,5
1Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
Nature nanotechnology
|July 10, 2023
概括
一种新的腺相关病毒 (AAV) 变种CAP-Mac有效地穿越非人类灵长类动物的血脑屏障. 这使得用于大脑研究和潜在治疗的非侵入性基因传递成为可能.
科学领域:
- 神经科学是一个神经科学.
- 基因治疗 基因治疗
- 病毒学 病毒学
背景情况:
- 穿越灵长类血脑屏障 (BBB) 是大脑基因传递的一个重大挑战.
- 腺相关病毒 (AAV) 提供了非侵入性基因传递的潜力,但很少有人能有效地穿越灵长类BBB.
研究的目的:
- 在非人类灵长类动物中开发和表征一种腺相关病毒 (AAV) 变体,其血脑屏障 (BBB) 穿越效率得到改善.
- 为了证明这种AAV变体在向灵长类大脑进行非侵入性基因传递方面的实用性.
主要方法:
- 通过对大猩猩和进行查,设计了一种AAV变种 (CAP-Mac).
- 评估了CAP-Mac在不同非人类灵长类动物物种 (大黄蜂, rhesus macaque,绿) 的传递效率和热带性.
- 在体内使用CAP-Mac进行成像 (GCaMP) 和多色标签 (Brainbow) 的基因传递证明.
主要成果:
- 在多种非人类灵长类动物中,AAV.CAP-Mac在整个BBB中展示了增强的传递效率.
- CAP-Mac表现出多样化的热带性:在新生老世界灵长类动物中神经元偏差,在成年中宽,在成年海中血管偏差.
- 一次静脉注射剂量使得中的素成像和脑弓标记的功能性基因传递成为可能.
结论:
- AAV.CAP-Mac是一种有前途的工程 AAV 变体,可有效,非侵入性地将基因传递到非人类灵长类大脑中.
- 这种载体绕过了旧世界灵长类动物在基因转移应用中需要生殖系修改的需要.
- 在灵长类大脑中,CAP-Mac具有系统性基因治疗策略的潜力.
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