Acta Veterinaria et Zootechnica Sinica ›› 2025, Vol. 56 ›› Issue (12): 6339-6350.doi: 10.11843/j.issn.0366-6964.2025.12.036

• PREVENTIVE VETERINARY MEDICINE • Previous Articles     Next Articles

Differential Transcriptomic Analysis of Feline Kidney Cells Transfected with Feline Calicivirus NS2 Protein

CHEN Shangchen1,2, DONG Ningning1,2, TAN Xiaomei2, LI Na2, ZHANG Qi2, LUO Maoqing2, DENG Yingkun2, PANG Shuaisai2, GAO Jiaxi2, LIU Guangqing2*, MENG Chunchun2*   

  1. 1. College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China;
    2. Companion Animal Biosafety Risk Warning and Control Technology Team, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
  • Received:2025-02-26 Published:2025-12-24

Abstract: This study aims to investigate the interaction between FCV NS2 protein and host cells. In this study, a eukaryotic expression plasmid of FCV NS2 was transfected into CRFK cells, with an empty vector as the control. Three samples from each group were collected 24 hours post-transfection for transcriptomic sequencing. Results were as follows: Comparison of the sequencing results revealed 218 differentially expressed genes (DEGs) in the experimental group transfected with NS2 protein, including 200 upregulated genes and 18 downregulated genes. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses showed that the significantly differentially expressed genes were mainly involved in intracellular viral invasion and immune evasion pathways. This study reveals that the NS2 protein significantly regulates multiple signaling pathways at the transcriptional level, including endosomal transport, TGF-β, and RIG-I, in CRFK cells, systematically reveals the global transcriptional regulation patterns of host cells by feline calicivirus (FCV) NS2 protein. These findings provide a new perspective for future research on the interactions between FCV and host cells.

Key words: feline calicivirus, NS2, transcriptome sequencing, differentially expressed genes

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