In vivo Regeneration of Ganglion Cells for Vision Restoration in Mammalian Retinas.

In vivo Regeneration of Ganglion Cells for Vision Restoration in Mammalian Retinas.
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哺乳动物视网膜中神经节细胞的体内再生以恢复视力

DOI:
10.3389/fcell.2021.755544
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发表时间:
2021
影响因子:
5.5
通讯作者:
Xiang M
Xiang M
中科院分区:
生物学2区
文献类型:
--
作者:
Xiao D;Jin K;Qiu S;Lei Q;Huang W;Chen H;Su J;Xu Q;Xu Z;Gou B;Tie X;Liu F;Liu S;Liu Y;Xiang M

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青光眼和其他视神经病变影响全世界数百万人,最终导致视网膜神经节细胞(RGC)的进行性和不可逆变性和失明。由于移植的RGCs不能整合到视网膜中并沿长视觉通路沿着适当地投射,这些神经退行性疾病的细胞替代疗法的先前研究已经停滞。体内RGC再生将是一种有前途的替代方法,但哺乳动物视网膜缺乏再生能力。因此,在哺乳动物中再生功能和正确投射的RGC用于视力恢复长期以来一直是一个巨大的挑战。在这里,我们表明,转录因子(TF)Math5和Brn3b一起能够将成熟的小鼠Müller胶质细胞(MG)重编程为RGC。重新编程的RGC延伸长轴突,其通过整个视觉通路进行适当的视网膜内和视网膜外投射,以神经支配图像形成和非图像形成脑靶。它们表现出典型的神经元电生理特性,并改善RGC缺失小鼠模型的视觉反应。总之,我们的数据提供了证据,证明哺乳动物MG可以通过定义的TF重新编程,以实现功能性RGC的体内再生,以及一种有前途的新治疗方法来恢复青光眼和其他视神经病患者的视力。
Glaucoma and other optic neuropathies affect millions of people worldwide, ultimately causing progressive and irreversible degeneration of retinal ganglion cells (RGCs) and blindness. Previous research into cell replacement therapy of these neurodegenerative diseases has been stalled due to the incapability for grafted RGCs to integrate into the retina and project properly along the long visual pathway. In vivo RGC regeneration would be a promising alternative approach but mammalian retinas lack regenerative capacity. It therefore has long been a great challenge to regenerate functional and properly projecting RGCs for vision restoration in mammals. Here we show that the transcription factors (TFs) Math5 and Brn3b together are able to reprogram mature mouse Müller glia (MG) into RGCs. The reprogrammed RGCs extend long axons that make appropriate intra-retinal and extra-retinal projections through the entire visual pathway to innervate both image-forming and non-image-forming brain targets. They exhibit typical neuronal electrophysiological properties and improve visual responses in RGC loss mouse models. Together, our data provide evidence that mammalian MG can be reprogrammed by defined TFs to achieve in vivo regeneration of functional RGCs as well as a promising new therapeutic approach to restore vision to patients with glaucoma and other optic neuropathies.
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