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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/228537
Cortex folding by combined progenitor expansion and adhesion-controlled neuronal migration
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Folding of the mammalian cerebral cortex into sulcal fissures and gyral peaks is the result of complex processes that are incompletely understood. Previously we showed that genetic deletion of Flrt1/3 adhesion molecules causes folding of the smooth mouse cortex into sulci resulting from increased lateral dispersion and faster neuron migration, without progenitor expansion. Here, we show in mice that combining the Flrt1/3 double knockout with an additional genetic deletion that causes progenitor expansion, greatly enhances cortex folding. Expansion of intermediate progenitors by deletion of Cep83 leads to a relative increase in Flrt-mutant neurons resulting in enhanced formation of sulci. Expansion of apical progenitors by deletion of Fgf10 leads to a relative reduction in Flrt-mutant neurons resulting in enhanced formation of gyri. These results together with computational modeling identify key developmental mechanisms, such as adhesive properties, cell densities and migration of cortical neurons, that cooperate to promote cortical gyrification.
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CHUN, Seung Hee, et al. Cortex folding by combined progenitor expansion and adhesion-controlled neuronal migration. Nature Communications. 2025. Vol. 16, num. 1. ISSN 2041-1723. [consulted: 7 of June of 2026]. Available at: https://hdl.handle.net/2445/228537