Title : Effectiveness of human cytochrome P450 3A4 present in liposomal and microsomal nanoparticles in formation of covalent DNA adducts by ellipticine.

Pub. Date : 2016 Dec 18

PMID : 28263536






8 Functional Relationships(s)
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1 Effectiveness of human cytochrome P450 3A4 present in liposomal and microsomal nanoparticles in formation of covalent DNA adducts by ellipticine. ellipticine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
2 However, since its anticancer efficiency depends on the CYP3A4-mediated metabolism in cancer cells, the aim of our research is to develop nanoparticles containing this enzyme that can be transported to tumor cells, thereby potentiating ellipticine cytotoxicity. ellipticine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
3 METHODS: The CYP3A4 enzyme encapsulated into two nanoparticle forms, liposomes and microsomes, was tested to activate ellipticine to its reactive species forming covalent DNA adducts. ellipticine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
4 RESULTS: The CYP3A4 enzyme both in the liposome and microsome nanoparticle forms was efficient to activate ellipticine to species forming DNA adducts. ellipticine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
5 Two DNA adducts, which are formed from ellipticine metabolites 12-hydroxy- and 13-hydroxyellipticine generated by its oxidation by CYP3A4, were formed by both CYP3A4 nanoparticle systems. ellipticine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
6 Two DNA adducts, which are formed from ellipticine metabolites 12-hydroxy- and 13-hydroxyellipticine generated by its oxidation by CYP3A4, were formed by both CYP3A4 nanoparticle systems. ellipticine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
7 A higher effectiveness of CYP3A4 in microsomal than in liposomal nanoparticles to form ellipticine-DNA adducts was found. ellipticine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
8 CONCLUSION: Further testing in a suitable cancer cell model is encouraged to investigate whether the DNA-damaging effects of ellipticine after its activation by CYP3A4 nanoparticle forms are appropriate for active targeting of this enzyme to specific cancer cells. ellipticine cytochrome P450 family 3 subfamily A member 4 Homo sapiens