Title : The involvement of cytochrome p450 (CYP) 26 in the retinoic acid metabolism of human epidermal keratinocytes.

Pub. Date : 2009 Mar

PMID : 19171200






8 Functional Relationships(s)
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1 All-trans retinoic acid (RA) levels are controlled by enzymes of the vitamin A metabolism (RDH16, RalDH2, and LRAT) and RA catabolism (CYP26 and CYP2S1). 2-octenal cytochrome P450 family 26 subfamily A member 1 Homo sapiens
2 All-trans retinoic acid (RA) levels are controlled by enzymes of the vitamin A metabolism (RDH16, RalDH2, and LRAT) and RA catabolism (CYP26 and CYP2S1). Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
3 All-trans retinoic acid (RA) levels are controlled by enzymes of the vitamin A metabolism (RDH16, RalDH2, and LRAT) and RA catabolism (CYP26 and CYP2S1). Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
4 RA (1 microM) induced CYP26A1, CYP26B1, CYP2S1, CRABPII and LRAT mRNA. Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
5 The CYP26 inhibitor talarozole altered CYP26A1 and LRAT mRNA expression in a similar way as RA, increased the cellular accumulation of [(3)H]RA, and induced a punctate CRABPII staining, also observed after siRNA knock-down of CYP26B1 (but not after RA exposure). R 115866 cytochrome P450 family 26 subfamily A member 1 Homo sapiens
6 The CYP26 inhibitor talarozole altered CYP26A1 and LRAT mRNA expression in a similar way as RA, increased the cellular accumulation of [(3)H]RA, and induced a punctate CRABPII staining, also observed after siRNA knock-down of CYP26B1 (but not after RA exposure). R 115866 cytochrome P450 family 26 subfamily A member 1 Homo sapiens
7 The CYP26 inhibitor talarozole altered CYP26A1 and LRAT mRNA expression in a similar way as RA, increased the cellular accumulation of [(3)H]RA, and induced a punctate CRABPII staining, also observed after siRNA knock-down of CYP26B1 (but not after RA exposure). Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens
8 Thus CYP26B1 appears essential for RA catabolism under physiological conditions, whereas CYP26A1 might play a greater role during RA excess. Tretinoin cytochrome P450 family 26 subfamily A member 1 Homo sapiens