RRC ID 42202
Author Ishii T, Fujishiro M, Masuda M, Teramoto S, Matsuse T.
Title A methylated oligonucleotide induced methylation of GSTP1 promoter and suppressed its expression in A549 lung adenocarcinoma cells.
Journal Cancer Lett
Abstract Glutathione S-transferase P1 (GSTP1) belongs to xenobiotic enzymes, and is supposed to contribute to chemoresistance. Though it was reported that GSTP1 gene is suppressed by cytosine-guanine (CpG) island methylation of its promoter, this promoter is not strongly methylated and GSTP1 protein is highly expressed in lung cancer. We intended to induce methylation of GSTP1 CpG island by using a methylated sense oligonucleotide complementary to this region. When we transduced the methylated oligonucleotides to A549 lung adenocarcinoma cells, methylation of the GSTP1 promoter and reduction of GSTP1 expression was induced, cell viability was reduced; however, chemoresistance against cisplatin has not clearly changed.
Volume 212(2)
Pages 211-23
Published 2004-8-30
DOI 10.1016/j.canlet.2004.03.001
PII S0304383504001764
PMID 15279901
MeSH Apoptosis Base Sequence Cell Line, Tumor Cell Survival Cisplatin / pharmacology CpG Islands Cytosine / chemistry DNA Methylation* DNA Primers / chemistry Drug Resistance, Neoplasm Flow Cytometry Genetic Techniques* Glutathione Transferase / genetics* Guanine / chemistry Humans Immunoblotting Models, Genetic Molecular Sequence Data Oligonucleotides / genetics* Polymerase Chain Reaction Promoter Regions, Genetic* RNA, Small Interfering Time Factors Transfection
IF 7.36
Times Cited 19
WOS Category ONCOLOGY
Resource
Human and Animal Cells