Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (10): 2299-2310.DOI: 10.3969/j.issn.1004-1524.20221467

• Animal Science • Previous Articles     Next Articles

Identification and validation of differential proteins in liver of New Zealand rabbits at different months of age

LIU Fangchenga,b(), WANG Fenga,b, BI Donglina,b, YANG Donglianga,b, YANG Xiaolia,b, BAI Jialina,b, LI Qiongyia,b,*()   

  1. a. Biomedical Research Center, Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Northwest Minzu University, Lanzhou 730030, China
    b. Biomedical Research Center, College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
  • Received:2022-10-25 Online:2023-10-25 Published:2023-10-31

Abstract:

Rabbit hemorrhagic disease is an acute and highly fatal infectious disease caused by Rabbit hemorrhagic disease virus (RHDV). The mortality rate of adult rabbits is more than 90%, but 2-week-old young rabbits are not affected. Based on the differences in the susceptibility of young rabbits and adult rabbits to RHDV, tandem mass tage (TMT) proteomics technology was used to detect and quantitatively analyze the proteins in liver of young rabbits (2 weeks old) and adult rabbits (6 months old). 4 353 proteins were quantitatively obtained from the liver of young rabbits and adult rabbits, and 821 differential proteins were screened. Among them, 294 proteins were significantly up-regulated and 527 proteins were significantly down-regulated in the liver of adult rabbits compared with young rabbits. The results of GO functional enrichment analysis showed that 145 small molecule metabolic proteins, 111 redox-related proteins and 478 proteins involved in metabolic processes were mainly enriched in biological processes; 528 extracellular component proteins, 139 mitochondrial proteins and 366 cytoplasmic proteins were mainly enriched in cellular components; and 342 catalytic active proteins, 93 redox active proteins and 50 coenzyme binding proteins were mainly enriched in molecular functions. A total of 47 KEGG (Kyoto Encyclopedia of Genes and Genomes) signaling pathways were annotated in 821 liver differential proteins in the KEGG pathway database, mainly involving metabolic pathways, carbon metabolism, oxidative phosphorylation and splicing bodies. The analysis of differential protein interaction network in liver of young and adult rabbits showed that MRPS15 had the highest correlation degree, and the differential protein cholesterol acyltransferase 1 (ACAT1) had more interaction in the interaction network. To explore the mechanism of infection difference between young and adult rabbits from the protein level, and to screen and analyze the differential proteins in liver of young and adult rabbits, it is expected to become a breakthrough point in the construction of RHDV in vitro amplification cell lines, and provide new research ideas for the construction of cell lines suitable for RHDV in vitro amplification.

Key words: New Zealand rabbit, tandem mass tage (TMT) proteomics, rabbit hemorrhagic disease virus (RHDV), liver, differential proteins

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