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Winter-Vann, A.M., Kamen, B.A., Bergo, M.O., Young, S.G., Melenyk, S., James, S.J. and Casey, P.J. (2003) Targeting Ras signaling through inhibition of carboxyl methylation:anunexpected properity of methotrexate. Proceedings of the National Academy of Sciences of the Uniited States of Americia, 100, 6529-6234. doi:10.1073/pnas.1135239100

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• TITLE: Influence OF anticancer drugs on DNA methylation in liver of female mice

  AUTHORS: Shaden Muawia Hanafy, Tarek Abd El-Raouf Salem, Amal Ahmed Abd El-Aziz, Bahgat Abd El-ghafar EL-Fiky, Mahmoud Abd El-Azeim Shokair

  KEYWORDS: Epigenetic; DNA Methylation; Methotrexate (MTX) and Adriamycine (ADR).

  JOURNAL NAME: American Journal of Molecular Biology, Vol.1 No.2, July 22, 2011

  ABSTRACT: Epigenetic changes such as DNA methylation regulate gene expression in normal development. Methotrexate and Adriamycine are antineoplastic drugs that target DNA and enzymes acting on DNA. We aimed to evaluate their cytotoxic effect on cell lines and on female mice to investigate the in vivo influence of both drugs on the DNA methylation and subsequently the protein expression. The total level of DNA methylation showed a significant reduction from 62.2% to 36.7%, 36.6% as compared to control group, when using different doses of MTX and ADR. Hepatic protein pattern revealed five bands with low MW (16 - 6.1 KDa) in acute and LD50 doses. In conclusion DNA methylation is influenced by anticancer drugs in a dose - dependent manner. Some specific protein fragments may be considered as a potential markers associated with high dose of anticancer drugs.