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An Alternative Culture Method to Maintain Genomic Hypomethylation of Mouse Embryonic Stem Cells Using MEK Inhibitor PD0325901 and Vitamin C
Published on: June 1, 2018
Rad50 mediates DNA demethylation to establish pluripotent reprogramming
Hanseul Park1,2, Byounggook Cho1,2, Jongpil Kim3,4
1Laboratory of Stem Cells & Gene Editing, Department of Biomedical Engineering, Dongguk University, Seoul, 100-715, Republic of Korea.
Rad50 protein is crucial for DNA demethylation, a process vital for generating induced pluripotent stem cells (iPSCs). Its presence enhances reprogramming efficiency, while its absence hinders it.
Area of Science:
- Epigenetics
- Stem Cell Biology
- Molecular Biology
Background:
- DNA demethylation, the removal of methyl groups from 5-methylcytosine, is essential for mammalian development and cell differentiation.
- Dynamic DNA demethylation is critical for successful somatic cell reprogramming into induced pluripotent stem cells (iPSCs).
Purpose of the Study:
- To investigate the role of Rad50 in the DNA demethylation process during somatic cell reprogramming.
- To elucidate the mechanism by which Rad50 influences iPSC generation efficiency.
Main Methods:
- Quantitative analysis of Rad50 expression in pluripotent stem cells.
- Assessment of global DNA demethylation levels under varying Rad50 expression conditions.
- Investigation of Rad50's interaction with Tet1 in the context of DNA demethylation.
Main Results:
- Rad50 is highly expressed in pluripotent stem cells and regulates global DNA demethylation.
- Overexpression of Rad50 enhances iPSC generation efficiency through increased DNA demethylation.
- Rad50 knockdown results in DNA hypermethylation, suppressing somatic cell reprogramming.
- Rad50 physically associates with Tet1 to promote DNA demethylation during reprogramming.
Conclusions:
- Rad50 plays a novel and significant role in facilitating DNA demethylation during somatic cell reprogramming.
- Rad50 is a key regulator of epigenetic modifications essential for iPSC generation.
- Targeting Rad50 could be a strategy to improve the efficiency of iPSC production.
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