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PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus Anolis carolinensis

PROVIDER: GSE104460 | GEO | 2018/02/14

REPOSITORIES: GEO

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PITX1 promotes chondrogenesis and myogenesis in mouse hindlimbs through conserved regulatory targets.

Project description: Not available

| S-EPMC5785414 | biostudies-literature

PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets [RNA-Seq]

Project description:The PITX1 transcription factor is expressed during hindlimb development, where it plays a critical role in directing hindlimb growth and the specification of hindlimb morphology. While it is known that PITX1 regulates hindlimb formation, in part, through activation of the Tbx4 gene, other transcriptional targets remain to be elucidated. We have used a combination of ChIP-seq and RNA-seq to investigate enhancer regions and target genes that are directly regulated by PITX1 in embryonic mouse hindlimbs. In addition, we have analyzed PITX1 binding sites in hindlimbs of Anolis lizards to identify ancient PITX1 regulatory targets. We find that PITX1-bound regions in both mouse and Anolis hindlimbs are strongly associated with genes implicated in limb and skeletal system development. Gene expression analyses reveal a large number of misexpressed genes in the hindlimbs of Pitx1-/- embryos. By intersecting misexpressed genes with genes that have neighboring mouse PITX1 binding sites, we identified 440 candidate targets of PITX1. Of these candidates, 68 exhibit ultra-conserved PITX1 binding events that are shared between mouse and Anolis hindlimbs. Among the ancient targets of PITX1 are important regulators of cartilage and skeletal muscle development, including Sox9 and Six1. Our data suggest that PITX1 promotes chondrogenesis and myogenesis in the hindlimb by direct regulation of several key members of the cartilage and muscle transcriptional networks.

2018-02-14 | GSE104459 | GEO

PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets [ChIP-Seq]

2018-02-14 | GSE104457 | GEO

PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets

Project description:PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets

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PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets [RNA-Seq]

Project description:PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets [RNA-Seq]

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PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets [ChIP-Seq]

Project description:PITX1 Promotes Chondrogenesis and Myogenesis in Mouse Hindlimbs Through Conserved Regulatory Targets [ChIP-Seq]

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