Transcriptomics

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Single-cell transcriptomics reveals the cellular identity of a novel progenitor population crucial for murine neural tube closure


ABSTRACT: Neural tube closure in vertebrates is achieved through a highly dynamic and coordinated series of morphogenic events involving neural plate, surface ectoderm, and neural plate border. Failure of this process in the caudal region causes spina bifida. Grainyhead-like 3 (GRHL3) is an indispensable transcription factor for neural tube closure as constitutive inactivation of which leads to fully penetrant spina bifida. Here, through single-cell transcriptomics we show that at E8.5, the time-point preceding mouse neural tube closure, the co-expression of Grhl3, Tfap2a, and Tfap2c defines a previously unrecognised progenitor population of surface ectoderm. Specific deletion of Grhl3 expression using Tfap2a-Cre recapitulate the spina bifida observed in Grhl3-null animals. Moreover, conditional inactivation of Tfap2c expression in Grhl3-expressing neural plate border cells also causes mild spina bifida. These findings clearly indicate that Grhl3-expressing neural plate border cells cohort is required for the early-stage neurulation.

ORGANISM(S): Mus musculus

PROVIDER: GSE246181 | GEO | 2024/10/09

REPOSITORIES: GEO

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