Spatiotemporal gene expression trajectories reveal developmental hierarchies of the human cortex.

Spatiotemporal gene expression trajectories reveal developmental hierarchies of the human cortex.
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DOI:
10.1126/science.aap8809
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发表时间:
2017-12-08
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Kriegstein AR
Kriegstein AR
中科院分区:
其他
文献类型:
--
作者:
Nowakowski TJ;Bhaduri A;Pollen AA;Alvarado B;Mostajo-Radji MA;Di Lullo E;Haeussler M;Sandoval-Espinosa C;Liu SJ;Velmeshev D;Ounadjela JR;Shuga J;Wang X;Lim DA;West JA;Leyrat AA;Kent WJ;Kriegstein AR

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Systematic analyses of spatiotemporal gene expression trajectories during organogenesis have been challenging because diverse cell types at different stages of maturation and differentiation coexist in the emerging tissues. We identified discrete cell types as well as temporally and spatially restricted trajectories of radial glia maturation and neurogenesis in developing human telencephalon. These lineage-specific trajectories reveal the expression of neurogenic transcription factors in early radial glia and enriched activation of mammalian target of rapamycin signaling in outer radial glia. Across cortical areas, modest transcriptional differences among radial glia cascade into robust typological distinctions among maturing neurons. Together, our results support a mixed model of topographical, typological, and temporal hierarchies governing cell-type diversity in the developing human telencephalon, including distinct excitatory lineages emerging in rostral and caudal cerebral cortex.
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