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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Activity and distribution studies of etoposide and mitozolomide in vivo and in vitro against human choriocarcinoma cell lines.

The in vivo antitumor activity of etoposide and mitozolomide was assessed in nude mice bearing a xenograft ( CC3) of human gestational choriocarcinoma. Both agents demonstrated, at best, marginal activity observed as a delay in tumour growth. This lack of sensitivity suggests that the CC3 xenograft is not a good model for selection of agents for clinical evaluation in gestational choriocarcinoma. Plasma and tissue concentrations of etoposide and mitozolomide were measured in nude mice. Drug concentrations found in tumour tissue were 60% and 30% of plasma levels for mitozolomide and etoposide respectively. Etoposide and mitozolomide activity was also evaluated in vitro with another choriocarcinoma cell line (JAR). Maximum cell-kill was achieved after exposure to etoposide 0.05-1 microgram/ml for 3-24 h. In vitro response to etoposide demonstrates the importance of exposure time in determining cytotoxicity. In contrast, mitozolomide at concentrations from 1-100 micrograms/ml did not have a marked effect against JAR after exposure for 3-24 h.[1]

References

  1. Activity and distribution studies of etoposide and mitozolomide in vivo and in vitro against human choriocarcinoma cell lines. Brindley, C.J., Pedley, R.B., Antoniw, P., Newlands, E.S. Cancer Chemother. Pharmacol. (1987) [Pubmed]
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