ArticleCell reports2026
Spatiotemporal coordination of Slit-Robo repulsion and neurturin-Gfrα attraction guides multipolar migration during retinal lamination.
Article in Cell reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Multipolar migration is a conserved neuronal migration mode in the developing brain, enabling emerging neurons to navigate in crowded environments and reach precise laminar positions. Yet, how these cells interpret external cues to guide their migration is not fully understood. We investigate this question using retinal horizontal cells as a model. Combining transcriptomics, targeted CRISPR screening, and live imaging, we reveal the spatiotemporal guidance system underlying horizontal cell lamination: repulsive Slit1b/2-Robo2 signaling in the amacrine cell layer initiates apical horizontal cell migration, while attractive neurturin-Gfrα1/2 signaling from photoreceptors fine-tunes final positioning beneath the photoreceptor layer. Disruption of these pathways causes basal retention of horizontal cells, highlighting the importance of spatially coordinated signaling for proper lamination and functional retinal circuitry. Our results uncover how positional signals and tissue architecture cooperate to achieve neuronal migration precision, a principle likely relevant across the developing central nervous system.
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