Antineoplastons (PDQ®): Complementary and alternative medicine - Health Professional Information [NCI] - General Information
Another theoretical mechanism of action is based on the structural similarities of antineoplaston A10 to other experimental anticancer drugs such as carmustine and 5-cinnamoyl-6-aminouracil. A10 has been proposed to bind to chromatin and therefore relate to other anticancer drugs such as doxorubicin that interact directly with DNA.[21,26,27]
At the cellular level, two other mechanisms of action have been proposed to explain inhibition of tumor growth. One theory involves the activity of PAG, a component of some antineoplastons. PAG appears to compete with glutamine for access to the glutamine membrane transporter and may inhibit the incorporation of glutamine into the proteins of neoplastic cells. Because glutamine is essential for the cell cycle transition from G1 to S phase where DNA replication occurs, antineoplastons may arrest cell cycle progression and stop cell division. Another theory proposes that phenylacetic acid, also a component of several antineoplastons, inhibits methylation of nucleic acids in cancer cells. The hypomethylation of DNA in cancer cells may lead to terminal differentiation and prevention of tumor growth or progression.
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