Experimental therapy with 9-[2-(phosphonomethoxy)ethyl]-2,6-diaminopurine (PMEDAP): origin of resistance

. 2007 ; 53 (3) : 79-84.

Jazyk angličtina Země Česko Médium print

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/pmid17579998
Odkazy

PubMed 17579998
PII: file/6134/fb2007a0014.pdf
Knihovny.cz E-zdroje

The role of MRP4 and MRP5 transporters in the acyclic nucleoside phosphonate PMEDAP efflux was studied in vitro (CCRF-CEM cells) and in vivo (spontaneous transplantable T-cell lymphoma of SD/Cub inbred rats). The increased resistance against the cytostatic agent PMEDAP during longterm treatment was found to be associated with overexpression of MRP4 and MRP5 genes. The course of both gene activation differs significantly. While the MRP5 function is important in the onset of PMEDAP resistance, the intensity of the relative MRP4 gene expression increases rather continuously. Our data indicate cooperative acting of both MRP4 and MRP5 genes during the PMEDAP resistance development.

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