Transcriptome analysis of the post-larvae of giant freshwater prawn (Macrobrachium rosenbergii) after IAG gene knockdown with microRNA interference

•miR-184 can regulate expression of the IAG gene.•List of DEGs involved in sex, growth, and metabolism.•qRT-PCR validation results of eight selected DEGs identified by RNA-Seq. The insulin-like androgenic gland hormone gene (IAG) of crustaceans plays pivotal roles in the regulation of sex differenti...

Full description

Saved in:
Bibliographic Details
Published in:General and comparative endocrinology 2022-09, Vol.325, p.114054-114054, Article 114054
Main Authors: Qian, Hongli, Ma, Keyi, Feng, Jianbin, Guo, Ziqi, Gong, Jinhua, Chen, Huangen, Bai, Haotian, Qiu, Gaofeng
Format: Article
Language:English
Subjects:
IAG
Macrobrachium rosenbergii
miR-184
RNA interference
Transcriptome sequencing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•miR-184 can regulate expression of the IAG gene.•List of DEGs involved in sex, growth, and metabolism.•qRT-PCR validation results of eight selected DEGs identified by RNA-Seq. The insulin-like androgenic gland hormone gene (IAG) of crustaceans plays pivotal roles in the regulation of sex differentiation. MicroRNAs (miRNAs) are a class of short, non-coding RNAs that function as post-transcriptional gene regulators. However, little information about the regulatory relationship between miRNA and Macrobrachium rosenbergii IAG (MrIAG) were exposed. In this study, we used the 3′ untranslated region (UTR) of MrIAG to predict potential target sites of miRNAs. The results showed that miR-184 has one target site in the 3′UTR of MrIAG. Dual-luciferase report assay in vitro confirmed that miR-184 can significantly down-regulate MrIAG expression. Besides, we constructed mutant plasmids of 3′UTR of MrIAG. The result displayed that after co-transfection of mutant plasmids and miR-184 agomir, the activity of luciferase was not affected compared to the control. These results indicated that miR-184 could directly regulate MrIAG. In addition, we found that overexpression of miR-184 in M. rosenbergii can lead to significant changes in the transcription level of genes. Compared with control group, we identified 1510 differentially expressed genes (DEGs) in the miR-184 injection group. Some DEGs were involved in sex differentiation, gonad development, growth and molting were found. qRT-PCR verification was performed on eight DEGs randomly, and the results showed that the expression level of sex-, growth-, and metabolism-related genes changed significantly after MrIAG gene knockdown. Collectively, findings from this study suggest that miR-184, by mediating IAG expression, may be involved in many physiological processes in M. rosenbergii. The current study lays a basic understanding for short-term silencing of MrIAG with miR-184, and facilitates miRNA function analysis in M. rosenbergii in future.
ISSN:0016-6480
1095-6840
DOI:10.1016/j.ygcen.2022.114054