Title : SHH propagates distal limb bud development by enhancing CYP26B1-mediated retinoic acid clearance via AER-FGF signalling.

Pub. Date : 2011 May

PMID : 21471156






7 Functional Relationships(s)
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1 SHH propagates distal limb bud development by enhancing CYP26B1-mediated retinoic acid clearance via AER-FGF signalling. Tretinoin cytochrome P450, family 26, subfamily b, polypeptide 1 Mus musculus
2 In particular, retinoic acid (RA) target genes were upregulated proximally, while the expression of the RA-inactivating Cyp26b1 enzyme was downregulated distally, pointing to increased RA activity in Shh-deficient mouse limb buds. Tretinoin cytochrome P450, family 26, subfamily b, polypeptide 1 Mus musculus
3 In particular, retinoic acid (RA) target genes were upregulated proximally, while the expression of the RA-inactivating Cyp26b1 enzyme was downregulated distally, pointing to increased RA activity in Shh-deficient mouse limb buds. Tretinoin cytochrome P450, family 26, subfamily b, polypeptide 1 Mus musculus
4 During initiation of limb bud outgrowth, the activation of Cyp26b1 expression creates a distal "RA-free" domain, as indicated by complementary downregulation of a transcriptional sensor of RA activity. Tretinoin cytochrome P450, family 26, subfamily b, polypeptide 1 Mus musculus
5 During initiation of limb bud outgrowth, the activation of Cyp26b1 expression creates a distal "RA-free" domain, as indicated by complementary downregulation of a transcriptional sensor of RA activity. Tretinoin cytochrome P450, family 26, subfamily b, polypeptide 1 Mus musculus
6 In summary, SHH promotes distal progression of limb development by enhancing CYP26B1-mediated RA clearance as part of a signalling network linking the SHH/GREM1/AER-FGF feedback loop to the newly identified AER-FGF/CYP26B1/RA module. Tretinoin cytochrome P450, family 26, subfamily b, polypeptide 1 Mus musculus
7 In summary, SHH promotes distal progression of limb development by enhancing CYP26B1-mediated RA clearance as part of a signalling network linking the SHH/GREM1/AER-FGF feedback loop to the newly identified AER-FGF/CYP26B1/RA module. Tretinoin cytochrome P450, family 26, subfamily b, polypeptide 1 Mus musculus