Platinum nanocolloid-supplemented hydrogendissolved water inhibits growth of human tongue carcinoma cells preferentially over normal cells

• Veröffentlicht in: Experimental Oncology
• Datum: 2009
• Hauptverfasser: Saitoh, Y., Yoshimura, Y., Nakano, K., Miwa, N.
• Format: Artikel
• Sprache: English
• Veröffentlicht: Інститут експериментальної патології, онкології і радіобіології ім. Р.Є. Кавецького НАН України 2009
• Schlagworte: Original contributions
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/134400
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Platinum nanocolloid-supplemented hydrogendissolved water inhibits growth of human tongue carcinoma cells preferentially over normal cells / Y. Saitoh, Y. Yoshimura, K. Nakano, N. Miwa // Experimental Oncology. — 2009. — Т. 31, № 3. — С. 156-162. — Бібліогр.: 42 назв. — англ.

Aim: Hydrogen-dissolved water (HD-water) or platinum nanocolloid (Pt-nc) has been individually expected as a new therapeutic agent for oxidative stress-related diseases, whereas little is known about their combined effects on cancer, which were elucidated in the present study. Methods: HD-water was prepared by microporous gas bubbling, and supplemented with Pt-nc consisting of 0.003–1 ppm Pt and PVP polymers. Antioxidant activities were examined by 1, 1-diphenyl-picrylhydrazyl (DPPH)-radicalscavenging assay. Cytotoxic activities were examined by culturing of tumor and normal cell lines, respectively. Results: HD-water accelerated the Pt-nc-based DPPH-radical scavenging. Pt-nc-supplemented HD-water inhibited either colony formation efficiencies or colony sizes of human tongue carcinoma cells HSC-4, in contrast to no effects of HD-water alone, Pt-nc alone or Pt-absent PVP, but not appreciably inhibit normal human tongue epithelial-like cells DOK. Pt-nc-supplemented HD-water also suppressed cell population growth of HSC-4 cells of near-confluence (at higher cell densities) in view of decreases in either cell numbers or mitochondrial function, although less markedly than colony formation starting from a sparse-cell state (at lower cell densities). Dissolved hydrogen, oxygen concentration or oxido-reduced potentials of HD-water was decreased, rather decreased or increased by Pt-nc addition, respectively. Conclusions: Anti-cancer activity of Pt-nc-supplemented HD-water was shown by its preferential cell-growth inhibition to human tongue carcinoma cells HSC-4 over normal human tongue cells DOK, and might be partly attributed to HD-water-caused enhancement of Pt-nc-relevant antioxidant ability. Pt-nc-supplemented HD-water is expected as a novel agent against human tongue cancers due to its cancer progression-repressive abilities.