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Cytochrome P450 ω-Hydroxylases in Inflammation and Cancer

Amanda L Johnson1, Katheryne Z Edson2, Rheem A Totah1

  • 1Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, Washington, USA.

Advances in Pharmacology (San Diego, Calif.)
|August 3, 2015
PubMed

Insights

Human CYP4 enzymes metabolize fatty acids like arachidonic acid, producing compounds such as 20-HETE. This review covers CYP4 ω-hydroxylases

Area of Science:

  • Biochemistry and Molecular Biology
  • Pharmacology and Drug Metabolism
  • Cellular and Molecular Physiology

Background:

  • Cytochrome P450 (CYP)-dependent ω-hydroxylation is a key metabolic pathway.
  • This reaction is crucial for processing endogenous compounds, particularly fatty acids like arachidonic acid.
  • Eicosanoids, derived from arachidonic acid, are significant substrates involved in various physiological processes.

Purpose of the Study:

  • To review the enzymology, tissue distribution, and substrate selectivity of human CYP4 ω-hydroxylases.
  • To elucidate the roles of these enzymes in the formation and biological effects of eicosanoid metabolites.
  • To highlight the involvement of CYP4 enzymes in inflammation and cancer progression.

Main Methods:

  • Literature review of existing research on human CYP4 ω-hydroxylases.
  • Analysis of enzymology, tissue distribution, and substrate specificity data.
  • Synthesis of information regarding the physiological roles of CYP4-derived metabolites.

Main Results:

  • Human CYP4 enzymes, including CYP4A11, CYP4F2, and CYP4F3B, hydroxylate arachidonic acid to 20-HETE.
  • 20-HETE plays a significant role in tumor progression, angiogenesis, and blood pressure regulation.
  • CYP4F3A metabolizes leukotriene B4 to 20-hydroxy leukotriene B4, regulating inflammatory responses.

Conclusions:

  • Human CYP4 ω-hydroxylases are critical catalysts in the metabolism of key eicosanoids.
  • These enzymes significantly influence biological processes, including inflammation and cancer.
  • Understanding CYP4 ω-hydroxylases offers insights into therapeutic strategies for related diseases.
Keywords:
20-HETEArachidonic acidCYP4CancerCytochrome P450EicosanoidsFatty acidsInflammationLeukotrienesOmega-hydroxylases

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