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- Embryonic stem cells are capable of self-renewing and differentiating to the desired fate depending on their position in the body. Stem cell homeostasis is maintained through epigenetic mechanisms that are highly dynamic in regulating the chromatin structure as well as specific gene transcription programs. Epigenetics has been used to refer to changes in gene expression, which are heritable through modifications not affecting the DNA sequence. The mammalian epigenome undergoes global remodeling during early stem cell development that requires commitment of cells to be restricted to the desired . There has been multiple evidence suggesting that the maintenance of the lineage commitment of stem cells is controlled by epigenetic mechanisms such as DNA methylation, histone modifications and regulation of ATP-dependent remolding of chromatin structure. Based on the histone code hypothesis, distinct covalent histone modifications can lead to functionally distinct chromatin structures that influence the cell's fate. This regulation of chromatin through epigenetic modifications is a molecular mechanism that determines whether the cell continues to differentiate into the desired fate. A research study by Lee et al. examined the effects of epigenetic modifications on the chromatin structure and the modulation of these epigenetic markers during stem cell differentiation through in vitro differentiation of murine embryonic stem (ES) cells. (en)
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- 28092 (xsd:nonNegativeInteger)
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- Embryonic stem cells are capable of self-renewing and differentiating to the desired fate depending on their position in the body. Stem cell homeostasis is maintained through epigenetic mechanisms that are highly dynamic in regulating the chromatin structure as well as specific gene transcription programs. Epigenetics has been used to refer to changes in gene expression, which are heritable through modifications not affecting the DNA sequence. (en)
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- Epigenetics in stem-cell differentiation (en)
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