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Updated: Feb 1, 2026
06:09
Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
Published on: June 7, 2019
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TET2-Dependent Hydroxymethylome Plasticity Reduces Melanoma Initiation and Progression
Elise Bonvin1, Enrico Radaelli2,3, Martin Bizet1
1Laboratory of Cancer Epigenetics, Faculty of Medicine, ULB-Cancer Research Center (U-CRC), Université Libre de Bruxelles (ULB), Brussels, Belgium.
Cancer Research
|December 13, 2018
Summary
TET2 enzyme loss promotes melanoma initiation and progression by altering DNA modification patterns. This epigenetic factor
Area of Science:
- Epigenetics
- Cancer Biology
- Dermatology
Background:
- Melanoma development involves epigenetic changes, but their precise role is unclear.
- 5-hydroxymethylcytosine (5hmC), a key epigenetic mark, is altered in melanoma.
- The function of 5hmC loss in melanoma pathogenesis requires further investigation.
Purpose of the Study:
- To investigate the role of TET2-mediated 5hmC in NRAS-driven melanoma.
- To determine if TET2 loss contributes to melanoma initiation and progression.
Main Methods:
- Utilized a mouse model of NRAS-driven melanoma.
- Genetically manipulated Tet2 levels in melanoma cells.
- Analyzed 5hmC levels and distribution in gene bodies.
Main Results:
- NRAS-driven melanomagenesis showed decreased 5hmC globally and specific gains in gene bodies.
- Genetic ablation of Tet2 accelerated melanoma initiation and progression.
- Tet2 deficiency suppressed specific 5hmC gains in gene bodies.
Conclusions:
- TET2 acts as a tumor suppressor in melanoma by promoting 5hmC gains in specific gene bodies.
- Epigenome plasticity and druggable epigenetic factors are crucial in cancer development.
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