Homeobox protein MOX-1

Definition

Mesodermal transcription factor that plays a key role in somitogenesis and is specifically required for sclerotome development. Required for maintenance of the sclerotome polarity and formation of the cranio-cervical joints. Binds specifically to the promoter of target genes and regulates their expression. Activates expression of NKX3-2 in the sclerotome. Activates expression of CDKN1A and CDKN2A in endothelial cells, acting as a regulator of vascular cell proliferation. While it activates CDKN1A in a DNA-dependent manner, it activates CDKN2A in a DNA-independent manner. Required for hematopoietic stem cell (HSCs) induction via its role in somitogenesis: specification of HSCs occurs via the deployment of a specific endothelial precursor population, which arises within a sub-compartment of the somite named endotome.

References:

[1]. Fatih Bayrakli, et al. Mutation in MEOX1 gene causes a recessive Klippel-Feil syndrome subtype. BMC Genet. 2013 Sep 28;14:95. [Content Brief]

[2]. Jawahir Y Mohamed, et al. Mutations in MEOX1, encoding mesenchyme homeobox 1, cause Klippel-Feil anomaly. Am J Hum Genet. 2013 Jan 10;92(1):157-61. [Content Brief]

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