Clinical & Experimental Metastasis

, Volume 16, Issue 5, pp 471–479

Hypomethylation of the metastasis-associated S100A4 gene correlates with gene activation in human colon adenocarcinoma cell lines

  • Naoko Nakamura
  • Keizo Takenaga


The DNA methylation status of the metastasis-associated S100A4 gene in S100A4-positive and -negative human colon adenocarcinoma cell lines was examined. Northern and Western blot analyses revealed that HT-29, SW480, SW620, WiDr and Colo201 cells expressed S100A4, whereas SW837, LoVo and DLD-1 cells expressed little S100A4. Using CpG methylation-sensitive and -insensitive restriction enzymes and PCR-based methylation assay, it was found that the S100A4 gene in HT-29, SW480, SW620, WiDr and Colo201 cells, but not in SW837, LoVo and DLD-1 cells, was hypomethylated and that the hypomethylation of the second intron was correlated well with the expression of S100A4. 5-Aza-2'-deoxycytidine, an inhibitor of the eukaryotic DNA methyltransferase, induced the expression of the S100A4 gene in SW837, LoVo and DLD-1 cells, while it showed no effect on the expression of the gene in WiDr cells. These results indicate that hypomethylation of the S100A4 gene results in the expression of the gene in colon adenocarcinoma cells. © Rapid Science Ltd.

DNA methylation human colon adenocarcinoma metastasis S100A4 gene 


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Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • Naoko Nakamura
    • 1
  • Keizo Takenaga
    • 1
  1. 1.Division of ChemotherapyChiba Cancer Center Research Institute Chuoh-kuChibaJapan

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