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Maternal Smchd1 regulates Hox gene expression and patterning in the mouse embryo [RNAseq tailbud]

ABSTRACT: RNAseq from somite-matched tailbud tissue from E8-8.5 embryo tailbuds at the 6-11 somite developmental stages

ORGANISM(S): Mus musculus

PROVIDER: GSE183733 | GEO | 2022/06/27

REPOSITORIES: GEO

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Maternal Smchd1 regulates Hox gene expression and patterning in the mouse embryo [RNAseq tailbud]

Project description:Maternal Smchd1 regulates Hox gene expression and patterning in the mouse embryo [RNAseq tailbud]

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Maternal SMCHD1 regulates Hox gene expression and patterning in the mouse embryo.

Project description:Parents transmit genetic and epigenetic information to their offspring. Maternal effect genes regulate the offspring epigenome to ensure normal development. Here we report that the epigenetic regulator SMCHD1 has a maternal effect on Hox gene expression and skeletal patterning. Maternal SMCHD1, present in the oocyte and preimplantation embryo, prevents precocious activation of Hox genes post-implantation. Without maternal SMCHD1, highly penetrant posterior homeotic transformations occur in the embryo. Hox genes are decorated with Polycomb marks H2AK119ub and H3K27me3 from the oocyte throughout early embryonic development; however, loss of maternal SMCHD1 does not deplete these marks. Therefore, we propose maternal SMCHD1 acts downstream of Polycomb marks to establish a chromatin state necessary for persistent epigenetic silencing and appropriate Hox gene expression later in the developing embryo. This is a striking role for maternal SMCHD1 in long-lived epigenetic effects impacting offspring phenotype.

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