Ontogenetic survey of histone modifications in an annelid.

Genetics Research International
Glenys GibsonVett K Lloyd

Abstract

Histone modifications are widely recognized for their fundamental importance in regulating gene expression in embryonic development in a wide range of eukaryotes, but they have received relatively little attention in the development of marine invertebrates. We surveyed histone modifications throughout the development of a marine annelid, Polydora cornuta, to determine if modifications could be detected immunohistochemically and if there were characteristic changes in modifications throughout ontogeny (surveyed at representative stages from oocyte to adult). We found a common time of onset for three histone modifications in early cleavage (H3K14ac, H3K9me, and H3K4me2), some differences in the distribution of modifications among germ layers, differences in epifluorescence intensity in specific cell lineages suggesting that hyperacetylation (H3K14ac) and hypermethylation (H3K9me) occur during differentiation, and an overall decrease in the distribution of modifications from larvae to adults. Although preliminary, these results suggest that histone modifications are involved in activating early development and differentiation in a marine invertebrate.

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Citations

Mar 24, 2016·PloS One·Jenni E KesäniemiK Emily Knott
Apr 24, 2012·Integrative and Comparative Biology·Glenys GibsonHaixin Xu

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Methods Mentioned

BETA
acetylation
dissecting
histone acetylation

Software Mentioned

Corel PhotoPaint

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