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© Research
Publication : Development (Cambridge, England)

Impaired intervertebral disc formation in the absence of Jun

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Development (Cambridge, England) - 01 Jan 2003

Behrens A, Haigh J, Mechta-Grigoriou F, Nagy A, Yaniv M, Wagner EF

Link to Pubmed [PMID] – 12441295

Development 2003 Jan;130(1):103-9

Jun is a major component of the heterodimeric transcription factor AP-1 and is essential for embryonic development, as foetuses that lack Jun die at mid-gestation. Ubiquitous mosaic inactivation of a conditional Jun allele by cre/LoxP-mediated recombination was used to screen for novel functions of Jun and revealed that its absence results in severe malformations of the axial skeleton. More-specific Jun deletion by collagen2a1-cre demonstrated the essential function of Jun in the notochord and sclerotome. Mutant notochordal cells showed increased apoptosis, resulting in hypocellularity of the intervertebral discs. Subsequently, fusion of vertebral bodies caused a scoliosis of the axial skeleton. Thus, Jun is required for axial skeletogenesis by regulating notochord survival and intervertebral disc formation.

http://www.ncbi.nlm.nih.gov/pubmed/12441295