Examinando por Autor "Blank, Viviana C."

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  • Miniatura
    ÍtemAcceso Abierto
    A penicillin derivative exerts an anti-metastatic activity in melanoma cells through the downregulation of integrin αvβ3 and Wnt/β-Catenin pathway
    (Frontiers Media, 2020-02-25) Barrionuevo, Elizabeth; Cayrol, María Florencia; Cremaschi, Graciela Alicia; Cornier, Patricia Griselda; Boggián, Dora Bernarda; Delpiccolo, Carina M. L.; Mata, Ernesto Gabino; Roguin, Leonor P.; Blank, Viviana C.
    The synthetic triazolylpeptidyl penicillin derivative, named TAP7f, has been previously characterized as an effective antitumor agent in vitro and in vivo against B16-F0 melanoma cells. In this study, we investigated the anti-metastatic potential of this compound on highly metastatic murine B16-F10 and human A375 melanoma cells. We found that TAP7f inhibited cell adhesion, migration and invasion in a dose-dependent manner. Additionally, we demonstrated that TAP7f downregulated integrin αvβ3 expression and Wnt/β-catenin pathway, a signaling cascade commonly related to tumor invasion and metastasis. Thus, TAP7f reduced both the enzymatic activity and the expression levels of matrix-metalloproteinases-2 and -9 in a time dependent manner. Moreover, TAP7f inhibited the expression of the transcription factor Snail and the mesenchymal markers vimentin, and N-cadherin, and up-regulated the expression of the epithelial marker E-cadherin, suggesting that the penicillin derivative affects epithelial–mesenchymal transition. Results obtained in vitro were supported by those obtained in a B16-F10-bearing mice metastatic model, that showed a significant TAP7f inhibition of lung metastasis. These findings suggest the potential of TAP7f as a chemotherapeutic agent for the treatment of metastatic melanoma.
  • Miniatura
    ÍtemAcceso Abierto
    Design, synthesis and cytotoxic evaluation of a library of oxadiazole-containing hybrids
    (Royal Society of Chemistry, 2021-09-06) Camacho, Cristián Matías; Pizzio, Marianela G.; Roces, David L.; Boggián, Dora Bernarda; Mata, Ernesto Gabino; Bellizzi, Yanina; Barrionuevo, Elizabeth; Blank, Viviana C.; Roguin, Leonor P.