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TET-mediated 5hmC in breast cancer: mechanism and clinical potential

Jiahang Zhang1,2, Nadire Aishan1,2, Zhongqiu Zheng3

  • 1Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.

Epigenetics
|February 27, 2025
PubMed

Insights

Epigenetic modifications, including DNA demethylation, are key in breast cancer progression. Ten-Eleven Translocation (TET) enzymes regulate 5-hydroxymethylcytosine (5hmC) levels, impacting cancer development and offering diagnostic potential.

Area of Science:

  • Oncology
  • Epigenetics
  • Molecular Biology

Background:

  • Breast cancer exhibits diverse molecular subtypes and clinical behaviors.
  • Epigenetic modifications, particularly DNA demethylation, are critical in breast cancer progression.
  • Ten-Eleven Translocation (TET) enzymes mediate the conversion of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC), influencing gene expression.

Purpose of the Study:

  • To review the functions of TET proteins in breast cancer.
  • To explore the role of 5-hydroxymethylcytosine (5hmC) levels in breast cancer pathogenesis.
  • To discuss the clinical utility of 5hmC in early diagnosis and prognosis prediction.

Main Methods:

  • Literature review summarizing existing research on TET enzymes and 5hmC in breast cancer.
  • Analysis of studies investigating the relationship between TET protein function and 5hmC levels.
  • Examination of data on the clinical significance of 5hmC in breast cancer patients.

Main Results:

  • Global 5-hydroxymethylcytosine (5hmC) levels differ significantly between breast cancer and normal tissues.
  • TET enzyme activity is altered in breast cancer, affecting 5hmC homeostasis.
  • Altered 5hmC levels are associated with breast cancer progression and molecular subtypes.

Conclusions:

  • TET enzymes and 5hmC play significant roles in the molecular pathogenesis of breast cancer.
  • 5hmC levels represent a potential biomarker for early breast cancer diagnosis.
  • Measuring 5hmC may aid in predicting prognosis and guiding treatment decisions for breast cancer patients.
Keywords:
5hmCBreast cancerTET protein

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