Pretreatment with the polyamine analog 1,19-bis- (ethylamino) -5,10,15-triazanonadecane (BE-4-4-4-4) inhibits etoposide cytotoxicity in U-251 MG (NCI) human brain tumor cells
Smirnov, I.V.; Feuerstein, B.G.; Pellarin, M.; Marton, L.J.; Deen, D.F.; Basu, H.S.
Cellular and Molecular Biology 40(7): 975-980
1994
ISSN/ISBN: 0145-5680 PMID: 7849564 Document Number: 424228
We studied whether pretreatment of U-251 MG human brain tumor cells with the polyamine analog 1, 19-bis-(ethylamino)-5,10,15-triazanonadecane (BE-4-4-4-4) affected the cytotoxicity of the topoisomerase II inhibitor etoposide. We found that BE-4-4-4-4 protected cells from the cytotoxic effects of etoposide. Possible mechanisms for this protection may be related to enhanced DNA-nuclear matrix association in analog-treated cells.