通过来自固有光敏视网膜神经节细胞的光依赖性逆行途径控制视杆细胞数量的发育

IF 10.7 1区 生物学 Q1 CELL BIOLOGY Developmental cell Pub Date : 2024-08-13 DOI:10.1016/j.devcel.2024.07.018
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引用次数: 0

摘要

光感受对于视觉系统的发育至关重要,它是视觉与大脑皮层发育的第一个突触。在这里,我们发现光照环境通过表达Opn4的固有光敏视网膜神经节细胞(ipRGCs)控制发育期视杆细胞的凋亡。利用遗传学、感官环境操作和计算方法,我们建立了一条途径,在这条途径中,ipRGCs 依赖光释放的谷氨酸可通过内视网膜中杆前体上瞬时表达的谷氨酸受体(Grik3)被检测到。这些细胞之间的通信是由ipRGC上的混合神经元介导的,这些神经元在睁眼之前就能感知光线。这些结构跨越了ipRGC-视杆细胞前体在发育过程中的距离,并包含光接收机制(Opn4)和神经递质释放机制(Vglut2 & Syp)。对人类妊娠视网膜的评估确定了ipRGC-rod轴的保守特征,包括移位的杆状前体、瞬时GRIK3表达和具有深投射神经元的ipRGC。这项分析确定了一条适应性逆行途径,在睁眼之前通过ipRGCs将感觉环境与杆状前体联系起来。
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Developmental control of rod number via a light-dependent retrograde pathway from intrinsically photosensitive retinal ganglion cells

Photoreception is essential for the development of the visual system, shaping vision’s first synapse to cortical development. Here, we find that the lighting environment controls developmental rod apoptosis via Opn4-expressing intrinsically photosensitive retinal ganglion cells (ipRGCs). Using genetics, sensory environment manipulations, and computational approaches, we establish a pathway where light-dependent glutamate released from ipRGCs is detected via a transiently expressed glutamate receptor (Grik3) on rod precursors within the inner retina. Communication between these cells is mediated by hybrid neurites on ipRGCs that sense light before eye opening. These structures span the ipRGC-rod precursor distance over development and contain the machinery for photoreception (Opn4) and neurotransmitter release (Vglut2 & Syp). Assessment of the human gestational retina identifies conserved hallmarks of an ipRGC-to-rod axis, including displaced rod precursors, transient GRIK3 expression, and ipRGCs with deep-projecting neurites. This analysis defines an adaptive retrograde pathway linking the sensory environment to rod precursors via ipRGCs prior to eye opening.

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来源期刊
Developmental cell
Developmental cell 生物-发育生物学
CiteScore
18.90
自引率
1.70%
发文量
203
审稿时长
3-6 weeks
期刊介绍: Developmental Cell, established in 2001, is a comprehensive journal that explores a wide range of topics in cell and developmental biology. Our publication encompasses work across various disciplines within biology, with a particular emphasis on investigating the intersections between cell biology, developmental biology, and other related fields. Our primary objective is to present research conducted through a cell biological perspective, addressing the essential mechanisms governing cell function, cellular interactions, and responses to the environment. Moreover, we focus on understanding the collective behavior of cells, culminating in the formation of tissues, organs, and whole organisms, while also investigating the consequences of any malfunctions in these intricate processes.
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