China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (4): 1262-1270.doi: 10.16431/j.cnki.1671-7236.2022.04.007

• Biotechnology • Previous Articles     Next Articles

Bioinformatics and Gene Expression Analysis of miR-10b-5p in Different Tissues of Chickens

HUANG Zhengyang, ZHAO Zhenhua, HUANG Huayun, LI Chunmiao, WANG Qianbao, MU Chunyu, LI Shoufeng   

  1. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225009, China
  • Received:2021-10-21 Online:2022-04-05 Published:2022-03-25

Abstract: 【Objective】 The target gene prediction,bioinformatics analysis and tissue expression of miR-10b-5p in Suqin No.3 chickens at different growth stages were carried out to explore its role in chicken muscle growth and development.【Method】 The miR-10b-5p sequence of vertebrates were obtained through scientific research and miRBase database,the position of miR-10b-5p was determined using the Ensembl database,the phylogenetic tree was constructed based on the miRNA precursor sequence.The target genes of miR-10b-5p were predicted by using miRDB,microT and TargetScan websites,then GO function and KEGG pathway analysis were performed to reveal the function of miR-10b-5p gene.The expression changes of miR-10b-5p were detected by Real-time quantitative PCR in brain,cerebellum,pituitary gland,chest muscle,leg muscle,ovary,heart,liver,spleen,lung and kidney of chickens at different growth stages.【Result】 A total of 59 miR-10b-5p sequences from 59 species of animals were retrieved by miRBase.Each animal had only one miR-10b-5p form.Gene mapping analysis revealed that chicken miR-10b-5p was located in HOX gene family cluster on chromosome 2.Alignment analysis of the mature sequence of miR-10b-5p in common species showed that the mature sequence of miR-10b-5p had high homology and was relatively conserved among species.The phylogenetic tree analysis showed that miR-10b in primates,rodents,birds,and fishes in mammals were clustered first,and then clustered together into one group,which indicated that miR-10b was conservative in the process of evolution.Target genes prediction revealed that miR-10b-5p had 300 target genes.GO function analysis showed that target genes were mainly enriched mainly to chromatin assembly and post-transcriptional regulation of gene expression,histone methyltransferase complexes,transcription factor complexes and other functions.KEGG pathway analysis showed that target genes were mainly enriched in Wnt and p53 signaling pathways.Tissue expression analysis showed that miR-10b-5p was detective in all tissues tested, the expression of miR-10b-5p in brain, cerebellum, pituitary, chest and leg muscles at 3-day-old were significantly higher than those in heart, hypothalamus, kidney and lung (P<0.05). The expression of miR-10b-5p in pituitary, chest muscle, leg muscle and brain were significantly higher than that in other tissues at 90-day-old (P<0.05).Compared with 3-day-old chicks,the expression of miR-10b-5p in pituitary,chest and leg muscles of chickens at 90-day-old was significantly increased (P<0.05).【Conclusion】 Chicken miR-10b-5p was a miRNA that was widely expressed in tissues,and miR-10b was conserved in the evolutionary process,it might regulate muscle growth and cell proliferation and differentiation through Wnt and p53 signaling pathways.

Key words: chickens; miR-10b-5p; target gene; expression analysis; bioinformatics

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