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. 2020 Feb;27(6):6628-6636.
doi: 10.1007/s11356-019-06648-z. Epub 2019 Dec 24.

Identification and expression analysis of microRNAs in tibial growth plate of chicken through thiram toxicity

Zhixing Li  1 , Aoyun Li  1 , Jialu Zhang  1 , Yaping Wang  1 , Hui Zhang  1 , Khalid Mehmood  2 , Yi Lian  1 , Mudassar Iqbal  1   2 , Jiakui Li  3   4
Affiliations

Identification and expression analysis of microRNAs in tibial growth plate of chicken through thiram toxicity

Zhixing Li et al. Environ Sci Pollut Res Int. 2020 Feb.

Abstract

Thiram is a widely known tibial dyschondroplasia (TD) inducer. TD, a common metabolic cartilage disease, presents in rapidly growing poultry birds. There are evidences that miRNAs are involved in diverse aspects of normal skeletal development, but very less is known about the role of miRNAs in TD. Therefore, this study aimed to determine which genes and pathways show differential expression between TD suffered chickens and normal chickens. We collected growth plates from ten-days-old TD chickens and control chickens and performed high-throughput RNA sequencing (RNA-Seq). Afterwards, target prediction, GO annotation and KEGG pathway analysis were carried out to understand the role of DEMs (differentially expressed microRNAs). We obtained 96,884,760 and 94,574,290 clean reads and identified 17 significant DEMs between the TD and control groups. Functional enrichment analysis of DEMs indicated that the putative targets of miRNAs were remarkably enriched in bone-related pathways, such as Notch, MAPK and Autophagy. Overall, this study provides detailed understanding about the pathogenesis of thiram induced TD and new insights towards the molecular mechanism of miRNAs.

Keywords: chickens; growth plate; microRNA; next-generation sequencing; thiram; tibial dyschondroplasia.

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