title: Modulation of the metastatic progression of breast cancer with an organometallic ruthenium compound.
abstract: The modulation of the metastatic progression of breast cancer has been evaluated in vitro and in vivo with RAPTA-T, [Ru(eta6-toluene)Cl2(PTA)], an organometallic ruthenium compound. In vitro RAPTA-T inhibits some steps of the metastatic process such as the detachment from the primary tumour, the migration/invasion and the re-adhesion to a new growth substrate. All these effects are boosted when cells grow on components of the extra cellular matrix such as collagen IV and fibronectin and minimized on the non-specific substrate poly-L-lysine and are more pronounced when experiments are performed with the highly invasive MDA-MB-231 cells than with the non-invasive MCF-7 or the non- tumourigenic HBL-100. In vivo RAPTA-T selectively reduces the growth of lung metastases, an effect that might be explained by the in vitro activity. The effect on tests requiring the interaction of the tumour cells with extra cellular matrix components, might suggest an interaction with cell surface molecules in the activity of this ruthenium compound.
authors.affiliation: Callerio Foundation Onlus, 34127 Trieste, Italy. a.bergamo@callerio.org
authors.forename: Alberta
authors.initials: A
authors.lastname: Bergamo
authors.forename: Alessia
authors.initials: A
authors.lastname: Masi
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Dyson
authors.forename: Gianni
authors.initials: G
authors.lastname: Sava
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000494:pharmacology*; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology; D002448:Cell Adhesion / Q000187:drug effects*; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects*; D002470:Cell Survival / Q000187:drug effects; D024141:Collagen Type IV / Q000378:metabolism; D005260:Female; D005353:Fibronectins / Q000378:metabolism; D006801:Humans; D008175:Lung Neoplasms / Q000378:metabolism / Q000517:prevention & control* / Q000556:secondary; D020778:Matrix Metalloproteinase 2 / Q000378:metabolism; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism; D051379:Mice; D008808:Mice, Inbred CBA; D009361:Neoplasm Invasiveness; D009942:Organometallic Compounds / Q000494:pharmacology*; D011107:Polylysine / Q000378:metabolism; D013997:Time Factors
chemical_list: D000970:Antineoplastic Agents; D024141:Collagen Type IV; D005353:Fibronectins; D009942:Organometallic Compounds; C534678:RAPTA-T; D011107:Polylysine; C522361:MMP2 protein, human; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9