title: Cytotoxic activity of the titanium alkoxide (OPy)(2)Ti(4AP)(2) against cancer colony forming cells.
abstract: A novel family of titanium alkoxides with two stable pyridinemethoxide moieties bound to a titanium metal center were synthesized and tested for cytotoxic activity on a variety of cancer cell lines using colony formation assays. One compound, (OPy)(2)Ti(4AP)(2), where OPy is NC(5)H(5)CH(2)O(-), and 4AP is 4-aminophenoxide ((-)OC(6)H(5)(NH(2))-4), demonstrated increased cytotoxicity in breast, colon, and pancreatic cancer cell lines at 100 nanomolar levels with only short exposures. Further, (OPy)(2)Ti(4AP)(2) had activity in colon and pancreatic cancer cell lines that are usually resistant to chemotherapy. This demonstrates that these titanium compounds may have a role in anti-cancer therapy, similar to platinum-based compounds, and the (OPy)(2)Ti(4AP)(2) compound specifically deserves further investigation as an anti-cancer agent in chemo-resistant solid tumors.
authors.affiliation: Department of Internal Medicine, University of New Mexico Cancer Center, 1201 Camino de Salud, Albuquerque, NM 87131, USA.
authors.forename: Elizabeth A
authors.initials: EA
authors.lastname: Williamson
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Boyle
authors.forename: Rebecca
authors.initials: R
authors.lastname: Raymond
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Farrington
authors.forename: Claire
authors.initials: C
authors.lastname: Verschraegen
authors.forename: Montaser
authors.initials: M
authors.lastname: Shaheen
authors.forename: Robert
authors.initials: R
authors.lastname: Hromas
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry / Q000494:pharmacology*; D001943:Breast Neoplasms / Q000473:pathology*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D002470:Cell Survival / Q000187:drug effects; D003110:Colonic Neoplasms / Q000473:pathology*; D056831:Coordination Complexes / Q000737:chemistry / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D008958:Models, Molecular; D015394:Molecular Structure; D014411:Neoplastic Stem Cells / Q000187:drug effects* / Q000473:pathology; D010190:Pancreatic Neoplasms / Q000473:pathology*; D013997:Time Factors; D014410:Tumor Stem Cell Assay
chemical_list: D000970:Antineoplastic Agents; D056831:Coordination Complexes
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