Abstract
DNA methylation is one of the best-characterized epigenetic modifications and plays indispensable roles in embryonic development and adult tissue regeneration. In the past decade, progress in epigenetics has advanced our understanding in the molecular basis of this process.
Recent work showed abnormal epidermal differentiation and hair regeneration following suppression of DNA methylation enzymes. Dynamic DNA Methylation studies revealed hierarchies of DNA methylation and regulation of gene expression. Combining these advances has enabled us to gain more understanding of DNA methylation in the regulation of skin biology. Here, we review the known roles of DNA methylation in skin development and regeneration, focusing on embryonic skin lineage commitments and the maintenance of skin homoeostasis, as well as wound healing and regeneration. New directions and potential therapeutic targets are highlighted.
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Abbreviations
- 5mC:
-
5-methylcytosine
- aHF-SC:
-
active hair follicle stem cells
- CpG:
-
cytosine and guanine separated by one phosphate
- DMR:
-
differentially methylated region
- Dnmt1/3a/3b:
-
DNA methyltransferase 1/3a/3b
- HF:
-
hair follicle
- IFE:
-
interfollicular epidermis
- K14:
-
keratin 14
- ORS:
-
outer root sheath
- qHF-SC:
-
quiescent hair follicle stem cells
- TAC:
-
transient-amplifying matrix cells
- Tet:
-
Ten-eleven translocation methylcytosine dioxygenase
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Acknowledgments
We thank the Chuong lab members for their critical review of the manuscript and discussion. We thank the following funding sources: Dr. C.-M. Chuong and Dr. R.B. Widelitz are supported by National Institute of Arthritis and Musculoskeletal and Skin Diseases grants RO1-AR47364 and -AR60306; Dr. Y.-C. Liang is supported by the Overseas Postdoctoral Program for Frontier Technologies (102-2917-I-564-002-A1), the Ministry of Science and Technology, Taiwan.
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Liang, YC., Widelitz, R., Chuong, CM. (2018). DNA Methylation as an Epigenetic Memory Keeper during Skin Development and Regeneration. In: Botchkarev, V., Millar, S. (eds) Epigenetic Regulation of Skin Development and Regeneration. Stem Cell Biology and Regenerative Medicine. Humana Press, Cham. https://doi.org/10.1007/978-3-319-16769-5_2
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