Title : Predictive value of comparative molecular field analysis modelling of naphthalene inhibition of human CYP2A6 and mouse CYP2A5 enzymes.

Pub. Date : 2003 Aug

PMID : 12849728






6 Functional Relationships(s)
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1 Predictive value of comparative molecular field analysis modelling of naphthalene inhibition of human CYP2A6 and mouse CYP2A5 enzymes. naphthalene cytochrome P450 family 2 subfamily A member 6 Homo sapiens
2 The objects of this study were first to compare how well the recently constructed structure-inhibition activity relationship models of mouse CYP2A5 and human CYP2A6 predict the interaction of naphthalene in liver microsomes and secondly to study if these CYP enzymes actually oxidize naphthalene. naphthalene cytochrome P450 family 2 subfamily A member 6 Homo sapiens
3 The CoMFA model of CYP2A5 predicted the IC(50) value of naphthalene to be 42 microM (18-115 microM 95% CL) whereas in the in vitro experiment the result was 74 microM (65-83 microM) with the corresponding values for CYP2A6 being 41 microM (18-112 microM) and 25 microM (21-30 microM), respectively. naphthalene cytochrome P450 family 2 subfamily A member 6 Homo sapiens
4 Naphthalene appeared to be a competitive inhibitor both for mouse and human liver microsomal coumarin 7-hydroxylase, which is the specific probe activity for CYP2A5 and CYP2A6. naphthalene cytochrome P450 family 2 subfamily A member 6 Homo sapiens
5 Naphthalene appeared to be a competitive inhibitor both for mouse and human liver microsomal coumarin 7-hydroxylase, which is the specific probe activity for CYP2A5 and CYP2A6. naphthalene cytochrome P450 family 2 subfamily A member 6 Homo sapiens
6 These results indicate that in silico CoMFA models predict relatively well the interaction of naphthalene with CYP2A5 and CYP2A6 and that these CYPs actually oxidize naphthalene in vitro. naphthalene cytochrome P450 family 2 subfamily A member 6 Homo sapiens