Abstract:
BACKGROUND:Ruthenium-based anti-cancer compounds are proposed as viable alternatives that might circumvent the disadvantages of platinum-based drugs, the only metallodrugs in clinical use for chemotherapy. Organometallic complexes in particular hold great potential as alternative therapeutic agents since their cytotoxicity involves different modes of action and present reduced toxicity profiles. OBJECTIVE:During the last few years our research group has been reporting on a series of organometallic ruthenium(II)- cyclopentadienyl complexes with important cytotoxicity against several cancer cell lines, surpassing cisplatin in activity. We report herein preliminary in vivo studies with one representative compound of this family, with exceptional activity against several human cancer cell lines, including the glycolytic and highly metastatic MDAMB231 cell line used in this study. METHOD:The anti-tumor activity of our compound was studied in vivo on N:NIH(S)II-nu/nu nude female mice bearing triple negative breast cancer (TNBC) orthotopic tumors. Administration of 2.5 mg/kg/day during ten days caused cell death mostly by necrosis (in vitro and in vivo), inducing tumor growth suppression of about 50% in treated animals when compared to controls. RESULTS:The most remarkable result supporting the effectiveness and potential of this drug was the absence of metastases in the main organs of treated animals, while metastases were present in the lungs of all control mice, as revealed by histopathological and immunohistochemical analysis. CONCLUSION:These in vivo studies suggest a dual effect for our drug not only by suppressing growth at the primary tumor tissue but also by inhibiting its metastatic behavior. Altogether, these results represent a benchmark and a solid starting point for future studies.
journal_name
Anticancer Agents Med Chemjournal_title
Anti-cancer agents in medicinal chemistryauthors
Mendes N,Tortosa F,Valente A,Marques F,Matos A,Morais TS,Tomaz AI,Gärtner F,Garcia MHsubject
Has Abstractpub_date
2017-01-01 00:00:00pages
126-136issue
1eissn
1871-5206issn
1875-5992pii
ACAMC-EPUB-78510journal_volume
17pub_type
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journal_title:Anti-cancer agents in medicinal chemistry
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