title: Ruthenium(III) dimethyl sulfoxide pyridinehydroxamic acid complexes as potential antimetastatic agents: synthesis, characterisation and in vitro pharmacological evaluation.
abstract: Reaction of 3-pyridinehydroxamic acid and 4-pyridinehydroxamic acid (3-pyha and 4-pyha) with either [NBu4][RuCl4(dmso-S)2] or [(dmso)2H][RuCl4(dmso-S)2] (dmso is dimethyl sulfoxide) in acetone afforded three new ruthenium(III) dimethyl sulfoxide pyridinehydroxamic acid complexes: [NBu4][trans-RuCl4(dmso-S)(4-pyha)] x CH3CO CH3 (1), [3-pyhaH][trans-RuCl4(dmso-S)(3-pyha)] (2) and [4-pyhaH][trans-RuCl4(dmso-S)(4-pyha)] (3). The solid-state structure of [NBu4][trans-RuCl4(dmso-S)(4-pyha)] x CH3COCH3 (1) was determined by X-ray crystallography. 2 and 3 were pharmacologically evaluated for their in vitro cytotoxicity, their ability to inhibit cell invasion and their gelatinase activity. 2 and 3 were devoid of cytotoxicity against the cell lines tested. 2 inhibited invasion of the highly invasive MDA-MB-231 cells to a much greater extent than 3. Contrary to expectations, neither 2 nor 3 had any inhibitory effect on matrix metalloproteinase (MMP) production and/or activity and in fact 3 was found to enhance the production and/or activity of both MMP-2 and MMP-9.
authors.affiliation: Centre for Synthesis and Chemical Biology, Department of Pharmaceutical and Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland.
authors.forename: Darren
authors.initials: D
authors.lastname: Griffith
authors.forename: Sara
authors.initials: S
authors.lastname: Cecco
authors.forename: Ennio
authors.initials: E
authors.lastname: Zangrando
authors.forename: Alberto
authors.initials: A
authors.lastname: Bergamo
authors.forename: Gianni
authors.initials: G
authors.lastname: Sava
authors.forename: Celine J
authors.initials: CJ
authors.lastname: Marmion
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D018360:Crystallography, X-Ray; D004121:Dimethyl Sulfoxide / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D018093:Gelatinases / Q000378:metabolism; D006801:Humans; D008958:Models, Molecular; D015394:Molecular Structure; D009361:Neoplasm Invasiveness / Q000473:pathology; D009362:Neoplasm Metastasis / Q000473:pathology; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000970:Antineoplastic Agents; D009942:Organometallic Compounds; D018093:Gelatinases; D004121:Dimethyl Sulfoxide