Expression, function and regulation of mouse cytochrome P450 enzymes: comparison with human P450 enzymes

Curr Drug Metab. 2009 Dec;10(10):1151-83. doi: 10.2174/138920009790820138.


The present review focuses on the expression, function and regulation of mouse cytochrome P450 (Cyp) enzymes. Information compiled for mouse Cyp enzymes is compared with data collected for human CYP enzymes. To date, approximately 40 pairs of orthologous mouse-human CYP genes have been identified that encode enzymes performing similar metabolic functions. Recent knowledge concerning the tissue expression of mouse Cyp enzymes from families 1 to 51 is summarized. The catalytic activities of microsomal, mitochondrial and recombinant mouse Cyp enzymes are discussed and their involvement in the metabolism of exogenous and endogenous compounds is highlighted. The role of nuclear receptors, such as the aryl hydrocarbon receptor, constitutive androstane receptor and pregnane X receptor, in regulating the expression of mouse Cyp enzymes is examined. Targeted disruption of selected Cyp genes has generated numerous Cyp null mouse lines used to decipher the role of Cyp enzymes in metabolic, toxicological and biological processes. In conclusion, the laboratory mouse is an indispensable model for exploring human CYP-mediated activities.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Cytochrome P-450 Enzyme System / biosynthesis*
  • Cytochrome P-450 Enzyme System / genetics
  • Cytochrome P-450 Enzyme System / metabolism
  • Cytochrome P-450 Enzyme System / physiology*
  • Gene Expression Regulation, Enzymologic*
  • Humans
  • Mice
  • Models, Animal*
  • Receptors, Cytoplasmic and Nuclear / biosynthesis
  • Receptors, Cytoplasmic and Nuclear / physiology
  • Species Specificity


  • Receptors, Cytoplasmic and Nuclear
  • Cytochrome P-450 Enzyme System