title: Selective inhibitors of CYP2J2 related to terfenadine exhibit strong activity against human cancers in vitro and in vivo.
abstract: The cytochrome P450 epoxygenase, CYP2J2, converts arachidonic acid to four regioisomeric epoxyeicosatrienoic acids (EETs). We found recently that this enzyme is dramatically up-regulated in a variety of established human carcinoma cell lines and in human cancerous tissue and promotes the neoplastic phenotype. In the present study, we tested the hypothesis that specific inhibitors of CYP2J2 related to the drug terfenadine are effective antitumor agents. Four of these inhibitors (compounds 4, 5, 11, and 26) were tested for effectiveness in vitro and in vivo. In Tca-8113 cells, the CYP2J2 inhibitors decreased EET production by approximately 60%, whereas they had no effect on CYP2J2 mRNA or protein expression. Compound 26 inhibited the proliferation of human tumor cells, reduced their ability to adhere, invade, and migrate, and attenuated activation of epithelial growth factor receptor signal and kinases and phosphatidylinositol 3 kinase/Akt pathways. Inhibition of CYP2J2 also significantly potentiated human tumor cell apoptosis and caused a corresponding increase in caspase-3 activity and change in expression of apoptosis-related proteins Bax and Bcl-2. In murine xenograft models using MDA-MB-435 cells, treatment with compound 26 significantly repressed tumor growth, decreased lung metastasis, and was associated with increased expression of the anticancer genes CD82 and nm23, without causing toxicity. These data suggest that CYP2J2 inhibitors hold significant promise for use in treatment of neoplastic diseases.
authors.affiliation: Department Internal Medicine and the Institute of Hypertension, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: Chen
authors.initials: C
authors.lastname: Chen
authors.forename: Guiling
authors.initials: G
authors.lastname: Li
authors.forename: Wanmin
authors.initials: W
authors.lastname: Liao
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
authors.forename: Liu
authors.initials: L
authors.lastname: Liu
authors.forename: Ding
authors.initials: D
authors.lastname: Ma
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Zhou
authors.forename: Reem H
authors.initials: RH
authors.lastname: Elbekai
authors.forename: Matthew L
authors.initials: ML
authors.lastname: Edin
authors.forename: Darryl C
authors.initials: DC
authors.lastname: Zeldin
authors.forename: Dao Wen
authors.initials: DW
authors.lastname: Wang
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000494:pharmacology / Q000627:therapeutic use*; D017209:Apoptosis / Q000187:drug effects; D053148:Caspase 3 / Q000378:metabolism; D002448:Cell Adhesion / Q000187:drug effects; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D000090762:Cytochrome P-450 CYP2J2; D065607:Cytochrome P-450 Enzyme Inhibitors; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics / Q000378:metabolism; D004791:Enzyme Inhibitors / Q000138:chemical synthesis / Q000494:pharmacology / Q000627:therapeutic use*; D015870:Gene Expression / Q000187:drug effects / Q000235:genetics; D006801:Humans; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D015394:Molecular Structure; D009361:Neoplasm Invasiveness / Q000517:prevention & control; D009362:Neoplasm Metastasis / Q000188:drug therapy / Q000473:pathology; D009369:Neoplasms / Q000188:drug therapy* / Q000473:pathology; D015398:Signal Transduction / Q000187:drug effects; D016019:Survival Analysis; D016593:Terfenadine / Q000031:analogs & derivatives* / Q000494:pharmacology / Q000627:therapeutic use; D023041:Xenograft Model Antitumor Assays
chemical_list: D000970:Antineoplastic Agents; C000717350:CYP2J2 protein, human; D065607:Cytochrome P-450 Enzyme Inhibitors; D004791:Enzyme Inhibitors; D016593:Terfenadine; D003577:Cytochrome P-450 Enzyme System; D000090762:Cytochrome P-450 CYP2J2; D053148:Caspase 3