Identification of cytochrome P450s involved in the metabolism of arachidonic acid in human platelets
| Autor: | Sun-Ah Cho, Dong-Hyun Kim, Kyung-Suk Oh, Su-Jun Lee, Yazun Jarrar, Jae-Gook Shin |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
Blood Platelets Cytochrome Clinical Biochemistry Arachidonic Acids chemistry.chemical_compound Cytochrome P-450 Enzyme System Western blot medicine Cytochrome P-450 Enzyme Inhibitors Humans heterocyclic compounds Platelet Physiological function biology medicine.diagnostic_test Reverse Transcriptase Polymerase Chain Reaction Cytochrome P450 Cell Biology Metabolism Molecular biology Biochemistry chemistry Fatty Acids Unsaturated biology.protein Arachidonic acid Transcriptome After treatment |
| Zdroj: | Prostaglandins, Leukotrienes and Essential Fatty Acids. 89:227-234 |
| ISSN: | 0952-3278 |
| Popis: | Although cytochrome P450s (CYPs) have been identified in most human cells, identification of CYPs in human platelets remains poorly explored. CYP expressions in human platelets were screened by using reverse transcriptase-polymerase chain reaction and western blot analysis followed by functional assays using arachidonic acid (ARA). CYP1A1, 2U1, 2J2, 4A11, 4F2, and 5A1 were expressed as both proteins and mRNAs in platelets. Ethoxyresorufin-O-deethylase activity was observed in platelets and this activity was significantly decreased after treatment with the general P450 inhibitor SKF-525 A and the CYP1A inhibitor, α-naphthoflavone (40–45%, Po0.001). Seventeen ARA metabolites were detected in ARAtreated platelets. Among these, the levels of 20-hydroxyeicosatetraenoic acid and epoxyeicosatrienoic acids were significantly decreased with the treatment of the P450 ω-hydroxylase inhibitor 17-octadecynoic acid (Po0.05–0.001). In summary, multiple ARA-metabolizing P450s were identified in human platelets. These findings may provide an important resource for understanding physiological function of platelet. |
| Databáze: | OpenAIRE |
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