title: The enhancement of vincristine cytotoxicity by combination with feselol.
abstract: Urinary bladder cancer is one of the most common cancers worldwide. Human transitional cell carcinoma (TCC) cells are epithelial-like adherent cells originally established from a primary bladder carcinoma. Studies have shown that TCC cells are resistant to some chemotherapeutic agents such as vincristine (VCR). In the present study, the effect of feselol, a sesquiterpene coumarin isolated from the fruits of Ferula badrakema, was investigated on VCR effectiveness. Our results demonstrated that feselol itself did not have any cytotoxic effect on TCC cells. In order to check its combinatorial effects, TCC cells were exposed to various combined concentrations of feselol and VCR. Then, morphological changes were monitored and cytotoxicity was analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay for three consequent days. Results showed that the combination of 40 microg/ml VCR with 16 microg/ml feselol increased the cytotoxicity of VCR by 28.32% after 48 h. This effect might be due to inhibition of P-glycoprotein in TCC cells by feselol.
authors.affiliation: Department of Biology, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.
authors.forename: Samaneh
authors.initials: S
authors.lastname: Mollazadeh
authors.forename: Maryam M
authors.initials: MM
authors.lastname: Matin
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Iranshahi
authors.forename: Ahmad Reza
authors.initials: AR
authors.lastname: Bahrami
authors.forename: Vajiheh
authors.initials: V
authors.lastname: Neshati
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Behnam-Rassouli
mesh_terms: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000187:drug effects; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D019008:Drug Resistance, Neoplasm / Q000187:drug effects; D005309:Ferula / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D006801:Humans; D015394:Molecular Structure; D012717:Sesquiterpenes / Q000737:chemistry / Q000494:pharmacology*; D014407:Tumor Cells, Cultured; D001749:Urinary Bladder Neoplasms / Q000188:drug therapy / Q000473:pathology*; D014750:Vincristine / Q000494:pharmacology*
chemical_list: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D000972:Antineoplastic Agents, Phytogenic; D012717:Sesquiterpenes; C551210:feselol; D014750:Vincristine