Characterization and expression analysis of microRNAs in the tube foot of sea cucumber Apostichopus japonicus.

MicroRNAs (miRNAs) are a class of endogenous non-coding small RNA with average length of 22 nucleotides, participating in the post-transcriptional regulation of gene expression. In this study, we report the identification and characterization of miRNAs in the tube foot of sea cucumber (Apostichopus...

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Main Authors: Hongdi Wang, Shikai Liu, Jun Cui, Chengze Li, Xuemei Qiu, Yaqing Chang, Zhanjiang Liu, Xiuli Wang
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0111820
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author Hongdi Wang
Shikai Liu
Jun Cui
Chengze Li
Xuemei Qiu
Yaqing Chang
Zhanjiang Liu
Xiuli Wang
author_facet Hongdi Wang
Shikai Liu
Jun Cui
Chengze Li
Xuemei Qiu
Yaqing Chang
Zhanjiang Liu
Xiuli Wang
author_sort Hongdi Wang
collection DOAJ
description MicroRNAs (miRNAs) are a class of endogenous non-coding small RNA with average length of 22 nucleotides, participating in the post-transcriptional regulation of gene expression. In this study, we report the identification and characterization of miRNAs in the tube foot of sea cucumber (Apostichopus japonicus) by next generation sequencing with Illumina HiSeq 2000 platform. Through the bioinformatic analysis, we identified 260 conserved miRNAs and six novel miRNAs from the tube foot small RNA transcriptome. Quantitative realtime PCR (qRT-PCR) was performed to characterize the specific expression in the tube foot. The results indicated that four miRNAs, including miR-29a, miR-29b, miR-2005 and miR-278-3p, were significantly up-regulated in the tube foot. The target genes of the four specifically expressed miRNAs were predicted in silico and validated by performing qRT-PCR. Gene ontology (GO) and KEGG pathway analyses with the target genes of these four miRNAs were conducted to further understand the regulatory function in the tube foot. This is the first study to profile the miRNA transcriptome of the tube foot in sea cucumber. This work will provide valuable genomic resources to understand the mechanisms of gene regulation in the tube foot, and will be useful to assist the molecular breeding in sea cucumber.
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spelling doaj.art-c62f76690dc34ae3a3efe6f6789019a82022-12-21T22:37:16ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-01911e11182010.1371/journal.pone.0111820Characterization and expression analysis of microRNAs in the tube foot of sea cucumber Apostichopus japonicus.Hongdi WangShikai LiuJun CuiChengze LiXuemei QiuYaqing ChangZhanjiang LiuXiuli WangMicroRNAs (miRNAs) are a class of endogenous non-coding small RNA with average length of 22 nucleotides, participating in the post-transcriptional regulation of gene expression. In this study, we report the identification and characterization of miRNAs in the tube foot of sea cucumber (Apostichopus japonicus) by next generation sequencing with Illumina HiSeq 2000 platform. Through the bioinformatic analysis, we identified 260 conserved miRNAs and six novel miRNAs from the tube foot small RNA transcriptome. Quantitative realtime PCR (qRT-PCR) was performed to characterize the specific expression in the tube foot. The results indicated that four miRNAs, including miR-29a, miR-29b, miR-2005 and miR-278-3p, were significantly up-regulated in the tube foot. The target genes of the four specifically expressed miRNAs were predicted in silico and validated by performing qRT-PCR. Gene ontology (GO) and KEGG pathway analyses with the target genes of these four miRNAs were conducted to further understand the regulatory function in the tube foot. This is the first study to profile the miRNA transcriptome of the tube foot in sea cucumber. This work will provide valuable genomic resources to understand the mechanisms of gene regulation in the tube foot, and will be useful to assist the molecular breeding in sea cucumber.https://doi.org/10.1371/journal.pone.0111820
spellingShingle Hongdi Wang
Shikai Liu
Jun Cui
Chengze Li
Xuemei Qiu
Yaqing Chang
Zhanjiang Liu
Xiuli Wang
Characterization and expression analysis of microRNAs in the tube foot of sea cucumber Apostichopus japonicus.
PLoS ONE
title Characterization and expression analysis of microRNAs in the tube foot of sea cucumber Apostichopus japonicus.
title_full Characterization and expression analysis of microRNAs in the tube foot of sea cucumber Apostichopus japonicus.
title_fullStr Characterization and expression analysis of microRNAs in the tube foot of sea cucumber Apostichopus japonicus.
title_full_unstemmed Characterization and expression analysis of microRNAs in the tube foot of sea cucumber Apostichopus japonicus.
title_short Characterization and expression analysis of microRNAs in the tube foot of sea cucumber Apostichopus japonicus.
title_sort characterization and expression analysis of micrornas in the tube foot of sea cucumber apostichopus japonicus
url https://doi.org/10.1371/journal.pone.0111820
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