miR-215 Targeting Novel Genes , 1 and Regulates the Resistance to F18 in Piglets.

Genes (Basel)

Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.

Published: September 2020

Previous research has revealed that miR-215 might be an important miRNA regulating weaned piglets' resistance to ( F18. In this study, target genes of miR-215 were identified by RNA-seq, bioinformatics analysis and dual luciferase detection. The relationship between target genes and infection was explored by RNAi technology, combined with stimulation and enzyme linked immunosorbent assay (ELISA) detection. Molecular regulating mechanisms of target genes expression were analyzed by methylation detection of promoter regions and dual luciferase activity assay of single nucleotide polymorphisms (SNPs) in core promoter regions. The results showed that miR-215 could target , and genes. Expression levels of three genes in porcine intestinal epithelial cells (IPEC-J2) in the RNAi group were significantly lower than those in the negative control pGMLV vector (pGMLV-NC) group after F18 stimulation, while cytokines levels of TNF-α and IL-1β in the RNAi group were significantly higher than in the pGMLV-NC group. Variant sites in the promoter region of three genes could affect their promoter activities. These results suggested that miR-215 could regulate weaned piglets' resistance to F18 by targeting , and genes. This study is the first to annotate new biological functions of , and genes in pigs, and provides a new experimental basis and reference for the research of piglets disease-resistance breeding.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7563519PMC
http://dx.doi.org/10.3390/genes11091053DOI Listing

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