Abstract
Over the past several decades, there has been a dramatic increase in awareness of the importance of epigenetics in the regulation of gene expression and how this relates to disease. The initial focus on cancer as a potential outcome of epigenetic alterations has grown to include the role of epigenetics in neurodevelopmental disorders, obesity, diabetes, memory, and even deviation in complex human social interactions. Prominent among the genes implicated in all of these conditions are those subject to genomic imprinting. These genes are regulated by epigenetic mechanisms, including DNA methylation that is established during early development and results in parent of origin dependent expression. Advances in the ability to accurately measure DNA methylation using high throughput techniques have now paved the way for study of this epigenetic modification in epidemiologic studies. In this chapter, we will examine the relationship of the early origins hypothesis to imprinted genes and how emerging studies strongly suggest that early origins may in part have its roots in epigenetic changes at these imprinted regulatory regions during early life.
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Abbreviations
- BWS:
-
Beckwith Wiedemann Syndrome
- CDKN1C:
-
Cyclin-Dependent Kinase Inhibitor 1C
- CTCF:
-
CCCTC Binding Factor
- DLK1:
-
Delta Like 1 Homolog (Drosophila)
- DMR:
-
Differentially Methylated Region
- DNMT:
-
DNA Methyltransferase
- GNAS:
-
Guanine Nucleotide Binding Protein (G protein) Alpha Stimulating Activity Polypeptide
- GRB10:
-
Growth Factor Receptor-Bound Protein 10
- H19:
-
Maternally Expressed H19
- HYMAI:
-
Hydatidiform Mole Associated and Imprinted (Non-Protein Coding)
- IGF1R:
-
Insulin-like Growth Factor Type I Receptor
- IGF2:
-
Insulin-like Growth Factor II
- KCNQ1OT1 KCNQ1:
-
Opposite Strand/Antisense Transcript (Non-Protein Coding)
- MEG3:
-
Maternally Expressed Gene 3 (Non-Protein Coding)
- MEST:
-
Mesoderm Specific Transcript Homolog (Mouse)
- NDN:
-
Necdin
- NEST:
-
Newborn Epigenetics STudy
- NNAT:
-
Neuronatin
- PLAGL1:
-
Pleomorphic Adenoma Gene-Like 1
- PEG3:
-
Paternally Expressed Gene 3
- SGCE:
-
Epsilon Sarcoglycan
- SLC38A4:
-
Solute Carrier Family 38 Member 4
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Acknowledgments
We thank the participants of the Newborn Epigenetics STudy and gratefully acknowledge the NEST support staff for their hard work and dedication to the project. This research was supported by National Institutes of Health grants R21ES014947, R01ES016772, and R01DK085173 and by funding from the Duke Comprehensive Cancer Center.
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Murphy, S.K., Hoyo, C. (2013). Sculpting Our Future: Environmental Nudging of the Imprintome. In: Jirtle, R., Tyson, F. (eds) Environmental Epigenomics in Health and Disease. Epigenetics and Human Health. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23380-7_3
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