Cited by 5,836Epigenetics and DNA MethylationGenomics and Chromatin DynamicsRNA modifications and cancer

Conversion of 5-Methylcytosine to 5-Hydroxymethylcytosine in Mammalian DNA by MLL Partner TET1

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Tahiliani, Mamta, Koh, Kian Peng, Shen, Yinghua, Pastor, William A., Bandukwala, Hozefa, Brudno, Yevgeny, Agarwal, Suneet, Iyer, Lakshminarayan M. +3 more·2009·Science

Abstract

Methylation Mediation: Methylation of cytosine bases, 5-methylcytosine (5mC), in DNA plays an important regulatory role in mammalian genomes. Methylation patterns are often inherited across generations, but they can also be dynamic, suggesting that active DNA demethylation pathways exist. One such pathway, best characterized in plants, involves the removal of the 5mC base, and its replacement by C, via a DNA repair mechanism. Kriaucionis and Heintz (p. 929 , published online 16 April) now show that, as well as 5mC in mammalian genomes, there are also significant amounts of 5-hydroxymethylcytosine (5hmC) in DNA of Purkinje neurons, which have large nuclei with apparently very little heterochromatin. Tahiliani et al. (p. 930, published online 16 April) find that the protein TET1 is capable of converting 5mC into 5hmC both in vitro and in vivo. 5-Hydroxymethylcytosine is also present in embryonic stem cells, and levels of 5hmC and TET1 show correlated variation during cell differentiation.

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  1. [25]Zhu B Proc. Natl. Acad. Sci. U.S.A 2000 97 5135
  2. [30]Ono R Cancer Res 2002 62 4075 12124344

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Authors
Tahiliani, M., Koh, K. P., Shen, Y., Pastor, W. A., Bandukwala, H., Brudno, Y., Agarwal, S., Iyer, L. M., Liu, D. R., Aravind, L., & Rao, A.
Affiliations
  • Harvard University (US)
  • Howard Hughes Medical Institute (US)
  • Boston Children's Hospital (US)
  • National Institutes of Health (US)
Corresponding author
  • Liu, David R.
  • Aravind, L.
  • Rao, Anjana
Venue
Science
Published
2009-05-15
Volume
324
Issue
5929
Pages
930-935
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2108664872
Cited by
5,836
References
30
Citations by year
2026: 168 · 2025: 221 · 2024: 265 · 2023: 328 · 2022: 331 · 2021: 354 · 2020: 336 · 2019: 385 · 2018: 412 · 2017: 427 · 2016: 458 · 2015: 418 · 2014: 464 · 2013: 432 · 2012: 333
FWCI
112.05
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (K08HL089150)
  • National Institute of General Medical Sciences (R01GM065865)
  • National Institute of Allergy and Infectious Diseases (AI44432, R01AI044432)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA modifications and cancer
Keywords
5-hydroxymethylcytosine, 5-methylcytosine, TET1, DNA demethylation, cytosine methylation, Purkinje cells, embryonic stem cells, cell differentiation, heterochromatin
MeSH terms
Amino Acid Sequence, Animals, Cell Line, Cytosine, DNA, DNA-Binding Proteins, Humans, Mixed Function Oxygenases, Hydroxylation, Molecular Sequence Data, Proto-Oncogene Proteins, Mass Spectrometry, Transfection, Dinucleoside Phosphates, Sequence Alignment, DNA Methylation, RNA Interference, 5-Methylcytosine, Mice, Embryonic Stem Cells

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