Integrative mRNA-miRNA interaction analysis associate with immune response of sea cucumberApostichopus japonicusbased on transcriptome database

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Abstract

MicroRNAs (miRNAs) constitute a family of endogenous non-coding small RNAs that have been demonstrated to be the key effectors in mediating host-pathogen interactions. Additionally, high-throughput sequencing provides unexampled opportunities to identify the pathogenic mechanism underlying miRNAs. In the present study, the target genes of immune-related miRNAs (miR-31, miR-2008, miR-92a, miR-210 and miR-7) and specific miRNAs (miR-2004) in Echinodermata were predicted in silico and validated. Gene ontology (GO) analysis of the target genes of these six miRNAs were conducted to further understand the regulatory function in the host immunity of Apostichopus japonicus (A. japonicus). Among the putative target genes of the six miRNAs, various immune-related targets were annotated, such as Nephl, SEC14Ll, p105, GL2, LYS, FNIAL, mTOR, LITAF, SLC44, TLR3, Apaf-1, and CNTN4. This work will provide valuable genetic resources to understand the interaction of multiple mRNA-miRNAs and the regulation mechanism in the anti-bacterial process in the sea cucumber.

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