The functional characteristics of optogenetic gene therapy for vision restoration.

The functional characteristics of optogenetic gene therapy for vision restoration.
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光遗传基因治疗视力恢复的功能特点。

DOI:
10.1007/s00018-020-03597-6
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发表时间:
2021-03
期刊:
Cellular and molecular life sciences : CMLS
影响因子:
--
通讯作者:
Hankins MW
Hankins MW
中科院分区:
其他
文献类型:
--
作者:
Lindner M;Gilhooley MJ;Peirson SN;Hughes S;Hankins MW

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光遗传学策略,以恢复视力的患者失明的终末期视网膜变性的目的是使剩余的视网膜神经元光敏。我们提出了一个创新的组合,多电极阵列记录连同一个复杂的图案生成光源作为一个工具集,以确定在何种程度上可以恢复神经视网膜反应复杂的光刺激后,病毒交付的红移通道视紫红质在视网膜变性的小鼠。我们的数据表明,通过光遗传基因疗法实现的视网膜输出水平时空响应特征与正常小鼠观察到的那些密切平行,但同样揭示了重要的局限性,其中一些可以使用双极细胞靶向基因递送方法来减轻。随着临床试验的开始,这些数据为基于通道视紫红质的基因疗法的能力和局限性提供了重要的新信息。我们建立的工具集能够比较光遗传学构建体和基于干细胞的技术,从而为确定未来的视力恢复方法提供一个有效且敏感的起点。本文的在线版本(10.1007/s 00018 -020-03597-6)包含补充材料,可供授权用户使用。
Optogenetic strategies to restore vision in patients blind from end-stage retinal degenerations aim to render remaining retinal neurons light-sensitive. We present an innovative combination of multi-electrode array recordings together with a complex pattern-generating light source as a toolset to determine the extent to which neural retinal responses to complex light stimuli can be restored following viral delivery of red-shifted channelrhodopsin in the retinally degenerated mouse. Our data indicate that retinal output level spatiotemporal response characteristics achieved by optogenetic gene therapy closely parallel those observed for normal mice but equally reveal important limitations, some of which could be mitigated using bipolar-cell targeted gene-delivery approaches. As clinical trials are commencing, these data provide important new information on the capacity and limitations of channelrhodopsin-based gene therapies. The toolset we established enables comparing optogenetic constructs and stem-cell-based techniques, thereby providing an efficient and sensitive starting point to identify future approaches for vision restoration. The online version of this article (10.1007/s00018-020-03597-6) contains supplementary material, which is available to authorized users.
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