Cited by 119Epigenetics and DNA MethylationCancer-related gene regulationChromatin Remodeling and Cancer

Kaiso Contributes to DNA Methylation-Dependent Silencing of Tumor Suppressor Genes in Colon Cancer Cell Lines

Lopes, Eloisi C., Valls, Ester, Figueroa, Maria E., Mazur, Alexander, Meng, Fan-Guo, Chiosis, Gabriela, Laird, Peter W., Schreiber-Agus, Nicole +3 more·2008·Cancer Research

Published version of a preprint

Abstract

Aberrant CpG methylation of tumor suppressor gene regulatory elements is associated with transcriptional silencing and contributes to malignant transformation of different tissues. It is presumed that methylated DNA sequences recruit repressor machinery to actively shutdown gene expression. The Kaiso protein is a transcriptional repressor expressed in human and murine colorectal tumors that can bind to methylated clusters of CpG dinucleotides. We show here that Kaiso represses methylated tumor suppressor genes and can bind in a methylation-dependent manner to the CDKN2A in human colon cancer cell lines. The contribution of Kaiso to epigenetic silencing was underlined by the fact that Kaiso depletion induced tumor suppressor gene expression without affecting DNA methylation levels. As a consequence, colon cancer cells became susceptible to cell cycle arrest and cell death mediated by chemotherapy. The data suggest that Kaiso is a methylation-dependent “opportunistic” oncogene that silences tumor suppressor genes when they become hypermethylated. Because Kaiso inactivation sensitized colon cancer cell lines to chemotherapy, it is possible that therapeutic targeting of Kaiso could improve the efficacy of current treatment regimens. [Cancer Res 2008;68(18):7258–63]

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Crossref · 10.1158/0008-5472.can-08-0344

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  • Kaiso binds the methylated promoters of CDKN2A, MGMT and HIC1 in HCT116 and Colo320 human colon cancer cell lines.

    “Kaiso binds to the methylated promoters of CDKN2A, MGMT and HIC1 in both HCT116 and Colo320 human colon cancer cell lines62.”

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Authors
Lopes, E. C., Valls, E., Figueroa, M. E., Mazur, A., Meng, F.-G., Chiosis, G., Laird, P. W., Schreiber-Agus, N., Greally, J. M., Prokhortchouk, E., & Melnick, A.
Affiliations
  • Memorial Sloan Kettering Cancer Center (US)
  • Yeshiva University (US)
  • 2Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, New York; Departments of
  • Bioengineering Center (RU)
  • USC Norris Comprehensive Cancer Center (US)
  • 4Medicine and Molecular Genetics, Albert Einstein College of Medicine, Bronx, New York;
  • Albert Einstein College of Medicine (US)
Venue
Cancer Research
Published
2008-09-14
Volume
68
Issue
18
Pages
7258-7263
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2089255658
Cited by
119
References
30
Citations by year
2026: 2 · 2025: 1 · 2024: 7 · 2023: 6 · 2022: 6 · 2021: 3 · 2020: 4 · 2019: 11 · 2018: 4 · 2017: 7 · 2016: 11 · 2015: 6 · 2014: 8 · 2013: 5 · 2012: 14
FWCI
3.29
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ca075090-09)
  • National Cancer Institute (R01-CA-075090, R01CA118699)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer-related gene regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
Keywords
Kaiso, DNA methylation, CpG methylation, tumor suppressor, transcriptional silencing, CDKN2A, colon cancer, epigenetic silencing, transcriptional repressor, cell cycle arrest, chemosensitivity, colorectal neoplasia
MeSH terms
Cell Cycle, Colonic Neoplasms, Humans, Promoter Regions, Genetic, Protein Binding, Transcription Factors, Transfection, Genes, Tumor Suppressor, Cell Death, DNA Methylation, Cyclin-Dependent Kinase Inhibitor p16, Genes, p16, Gene Silencing, RNA, Small Interfering, HCT116 Cells, Cell Line, Tumor

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