Title : A novel role for the retinoic acid-catabolizing enzyme CYP26A1 in Barrett's associated adenocarcinoma.

Pub. Date : 2008 May 8

PMID : 18059332






10 Functional Relationships(s)
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1 A novel role for the retinoic acid-catabolizing enzyme CYP26A1 in Barrett"s associated adenocarcinoma. Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
2 Vitamin A deficiency is associated with carcinogenesis, and upregulation of CYP26A1, a major retinoic acid (RA)-catabolizing enzyme, has recently been shown in cancer. Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
3 Vitamin A deficiency is associated with carcinogenesis, and upregulation of CYP26A1, a major retinoic acid (RA)-catabolizing enzyme, has recently been shown in cancer. Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
4 CYP26A1 was stably overexpressed in GihTERT cells, which were evaluated for gene-expression changes (pathway array and quantitative RT-PCR), cellular proliferation (cytometric DNA profile and colorimetric assay) and invasion (in vitro matrigel assay) with or without the CYP inhibitor ketaconazole. ketaconazole cytochrome P450 family 26 subfamily A member 1 Homo sapiens
5 RA levels decreased progressively with the degree of dysplasia (P<0.05) and were inversely correlated with CYP26A1 gene levels and activity (P<0.01). Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
6 CYP26A1 expression was increased synergistically by RA and lithocholic acid (P<0.05). Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
7 CYP26A1 expression was increased synergistically by RA and lithocholic acid (P<0.05). Lithocholic Acid cytochrome P450 family 26 subfamily A member 1 Homo sapiens
8 CYP26A1 expression was increased synergistically by RA and lithocholic acid (P<0.05). p&lt cytochrome P450 family 26 subfamily A member 1 Homo sapiens
9 Functional effects of CYP26A1 overexpression were increased proliferation (P<0.01) and invasion in vitro (P<0.01), which were inhibited by ketaconazole. ketaconazole cytochrome P450 family 26 subfamily A member 1 Homo sapiens
10 Overexpression of CYP26A1 causes intracellular RA depletion and drives the cell into a highly proliferative and invasive state with induction of other known oncogenes. Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens