analysis of dna methylation and hydroxymethylation in the genome of crustacean daphnia pulex
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2015
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Abstract
The aim of our study was to analyze the presence of 5-methyl-cytosine (5-mC) and 5-hydroxymethyl-cytosine (5-hmC) in the genome of crustacean Daphnia pulex. First, the presence of 5-mC and 5-hmC in genomic DNA was demonstrated by using antibodies specific to either 5-mC or 5-hmC. Then, analysis of 5-mC and 5-hmC using pairs of restriction enzymes with different sensitivity to methylation and hydroxymethylation confirmed the presence of both modifications in selected regions of three genes (Cox4, Cand2 and Ephx1). To get a detailed picture of 5-hmC distribution over the D. pulex genome, we performed 5-hmC enrichment and sequenced the enriched fraction using next generation sequencing and non-enriched library (input) as a control. Comparison of input and enriched libraries showed that 5-hmC in exons is twice as frequent as in introns. Functional analysis indicated that 5-hmC abundance is associated with genes that are involved in the adenylate cyclase-activating G-protein-coupled receptor signaling pathway, molting cycles, morphogenesis and cell fate determination. Genes that lack 5-hmC tend to be involved in the regulation of the transforming growth factor beta receptor signaling pathway and in many mRNA-related processes. Our results suggest that epigenetic modifications are present in the genome of D. pulex and most likely are involved in the regulation of gene expression of this crustacean.
| Reference Key |
strepetkait2015genesanalysis
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| Authors | ;Dovilė Strepetkaitė;Gediminas Alzbutas;Eimantas Astromskas;Arūnas Lagunavičius;Rasa Sabaliauskaitė;Kęstutis Arbačiauskas;Juozas Lazutka |
| Journal | thermal science and engineering progress |
| Year | 2015 |
| DOI |
10.3390/genes7010001
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| URL | |
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