Acta Veterinaria et Zootechnica Sinica ›› 2019, Vol. 50 ›› Issue (12): 2400-2412.doi: 10.11843/j.issn.0366-6964.2019.12.004

• ANIMAL GENETICS AND BREEDING • Previous Articles     Next Articles

Analysis of Transcriptome and microRNA in Leg Muscle of Tibetan Chicken at Different Developmental Stages

YUAN Mao1,2, JIANG Mingfeng1,2, XU Ya'ou1,2, LIN Yaqiu1,2, JIANG Xiaosong3, YANG Chaowu3, YU Chunlin3, LI Zhixiong1,2*   

  1. 1. Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization of Ministry of Education, College of Life Science and Technology, Southwest Minzu University, Chengdu 610041, China;
    2. Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, College of Life Science and Technology, Southwest Minzu University, Chengdu 610041, China;
    3. Sichuan Animal Science Academy, Chengdu 610066, China
  • Received:2019-05-16 Online:2019-12-23 Published:2019-12-20

Abstract: The objectives of this study were to investigate the regulation mechanism and particularity of muscle development in Tibetan chicken by RNA-sequencing and miRNA-sequencing. mRNA and small RNA in muscle tissues of Tibetan chicken on 120-and 150-day-old were sequenced. The differentially expressed genes (DEGs) and miRNAs were screened between two stages. The sequencing results were verified by qRT-PCR. A total of 1 691 DEGs were screened, of which 330 genes were up-regulated and 1 361 genes were down-regulated. Twenty two differentially expressed miRNAs were screened, of which 9 miRNAs were up-regulated and 13 miRNAs were down-regulated. qPCR verification results of 5 randomly selected genes and miRNAs showed that the expression trend was consistent with the sequencing results. GO enrichment analysis showed that the terms related to immunization accounted for a large proportion in the top 10 enrichment terms. The KEGG analysis showed that the immune-related pathways accounted for a large proportion in the 19 significant enriched pathways, and 83 miRNA target genes were in the significant enriched pathways. The integrated analysis of transcriptome and small RNA sequencing data indicated that 343 pairs of miRNA-mRNA were in the negatively correlated regulation pattern. This study provides a theoretical basis for further understanding the muscle development of Tibetan chicken from the multi-omics.

Key words: Tibetan chicken, muscle development, transcriptome, miRNA

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