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The 5-methylcytosine content of DNA from human tumors

Open access
Gama-Sosa, Miguel A., Slagel, Valerie A., Trewyn, Ronald W., Oxenhandler, Ronald, Kuo, Kenneth C., Gehrke, Charles W., Ehrlich, Melanie·1983·Nucleic Acids Research

Abstract

The over-all 5-methylcytosine (m5C) content of DNA from normal tissues varies considerably in a tissue-specific manner. By high-performance liquid chromatography, we have examined the m5C contents of enzymatic digests of DNA from 103 human tumors including benign, primary malignant and secondary malignant neoplasms. The diversity and large number of these tumor samples allowed us to compare the range of DNA methylation levels from neoplastic tissues to that of normal tissues from humans. Most of the metastatic neoplasms had significantly lower genomic m5C contents than did most of the benign neoplasms or normal tissues. The percentage of primary malignancies with hypomethylated DNA was intermediate between those of metastases and benign neoplasms. These findings might reflect an involvement of extensive demethylation of DNA in tumor progression. Such demethylation could be a source of the continually generated cellular diversity associated with cancer.

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Metadata

Authors
Gama-Sosa, M. A., Slagel, V. A., Trewyn, R. W., Oxenhandler, R., Kuo, K. C., Gehrke, C. W., & Ehrlich, M.
Venue
Nucleic Acids Research
Published
1983
Volume
11
Issue
19
Pages
6883-6894
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2029874395
Cited by
844
References
1
FWCI
3.99
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The 5-methylcytosine content of DNA from human tumors. https://app.cochat.ai/papers/10.1093/nar/11.19.6883
The paper
Gama-Sosa, M. A., Slagel, V. A., Trewyn, R. W., Oxenhandler, R., Kuo, K. C., Gehrke, C. W., & Ehrlich, M. (1983). The 5-methylcytosine content of DNA from human tumors. Nucleic Acids Research. https://doi.org/10.1093/nar/11.19.6883

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