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Parallel evolution of male germline epigenetic poising and somatic development in animals

Author(s)
Lesch, Bluma J; Silber, Sherman J; McCarrey, John R; Page, David C
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Abstract
Changes in gene regulation frequently underlie changes in morphology during evolution, and differences in chromatin state have been linked with changes in anatomical structure and gene expression across evolutionary time. Here we assess the relationship between evolution of chromatin state in germ cells and evolution of gene regulatory programs governing somatic development. We examined the poised (H3K4me3/H3K27me3 bivalent) epigenetic state in male germ cells from five mammalian and one avian species. We find that core genes poised in germ cells from multiple amniote species are ancient regulators of morphogenesis that sit at the top of transcriptional hierarchies controlling somatic tissue development, whereas genes that gain poising in germ cells from individual species act downstream of core poised genes during development in a species-specific fashion. We propose that critical regulators of animal development gained an epigenetically privileged state in germ cells, manifested in amniotes by H3K4me3/H3K27me3 poising, early in metazoan evolution.
Date issued
2016-07
URI
http://hdl.handle.net/1721.1/107718
Department
Massachusetts Institute of Technology. Department of Biology; Whitehead Institute for Biomedical Research
Journal
Nature Genetics
Publisher
Springer Nature
Citation
Lesch, Bluma J, Sherman J Silber, John R McCarrey, and David C Page. “Parallel Evolution of Male Germline Epigenetic Poising and Somatic Development in Animals.” Nature Genetics 48, no. 8 (June 13, 2016): 888–894.
Version: Author's final manuscript
ISSN
1061-4036
1546-1718

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