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Understanding microRNAs regulation in heat shock response in the sea cucumber Apostichopus japonicus

Author:
Li, Chao, Xu, Dongxue
Source:
Fish & shellfish immunology 2018 v.81 pp. 214-220
ISSN:
1050-4648
Subject:
Apostichopus japonicus, fish, gene expression, gene expression regulation, gene ontology, genes, heat shock response, heat stress, high-throughput nucleotide sequencing, immunity, microRNA, mortality, shellfish, summer, temperature, China
Abstract:
The sea cucumber Apostichopus japonicus is a valuable species in China. The extreme high temperature in the summer often results in high mortality. MicroRNAs (miRNAs) play important post-transcriptional regulatory roles in gene expression and can influence heat shock response (HSR) greatly. In this study, we determined the expression profiles of miRNAs under heat stress (HS) in A. japonicus by using high-throughput sequencing technique. Among the differential expression miRNAs, we highlighted 41 differentially expressed miRNAs, many of which were involved in immunity process and disease regulation. Gene ontology and pathway analyses of putative target genes were also carried out. Cell-substrate adherens junction and cell-substrate junction were significantly enriched in GO analysis. Moreover, we made a correlation analysis between remarkable miRNAs and the differentially expressed genes (DEGs) in sea cucumbers under HS. We identified 17 key miRNA-target pairs potentially regulated HSR of sea cucumbers. These results will provide new insights about miRNAs regulation and molecular adaptive mechanisms in sea cucumbers under HS.
Agid:
6118362