Acta Veterinaria et Zootechnica Sinica ›› 2023, Vol. 54 ›› Issue (5): 2147-2157.doi: 10.11843/j.issn.0366-6964.2023.05.035

• BASIC VETERINARY MEDICINE • Previous Articles     Next Articles

Transcriptomic Analysis of Key Genes and Pathways in Deer Gut Infected by Clostridium perfringens Type C

WANG Meihui1, ZHONG Zhenyu2, BAI Jiade2, SHAN Yunfang2, CHENG Zhibin2, ZHANG Qingxun2, MENG Yuping3, DONG Yulan1, GUO Qingyun2*   

  1. 1. College of Veterinary Medicine, China Agricultural University, Beijing 100193, China;
    2. Beijing Milu Ecological Research Center, Beijing 100076, China;
    3. Institute of Innovation Development Strategy, Beijing Academy of Science and Technology, Beijing 100083, China
  • Received:2022-10-11 Online:2023-05-23 Published:2023-05-20

Abstract: Clostridium perfringens (C. perfringens) disease in deer mainly manifests as enterotoxemia with high lethality. The aim of this study was to investigate the key genes and pathways of C. perfringens type C infection in the intestine of deer. A C. perfringens-infected deer jejunum ligation loop model was constructed, HE staining was used to detect pathological changes in the jejunum after C. perfringens infection, Illumina NovaSeq was used to sequence the transcriptome of C. perfringens-infected deer intestine, and qPCR was used to further validate some differentially expressed genes (differentially expressed genes (DEGs); finally, the multigene protein interaction network was predicted by STRING website. Morphological analysis revealed significant necrosis and hemorrhage in deer intestinal tissues following C. perfringens infection. Transcriptome analysis indicated the presence of a total of 705 DEGs, of which 276 DEGs up-regulated and 429 DEGs down-regulated genes were present in the infected group intestine. GO enrichment analysis showed that DEGs was mainly enriched in biological regulation, response to stimulus and immune system process; KEGG enrichment analysis showed that the pathways enriched in DEGs were mainly T cell receptor signaling pathways, Toll-like receptor signaling pathway and hematopoietic cell lineage, which caused intestinal damage and bleeding, and promoted the progression of deer enterotoxemia. In addition, the qPCR results confirmed that the analysis was accurate and reliable. The results of protein interaction analysis of DEGs showed that TLR6, CLDN1, CD3E, IL1A and CCL20 had more interactions with other proteins, and the pathways significantly enriched by GO analysis and KEGG analysis were highly overlapping. Among them, TLR6 may play a key role in C. perfringens-induced enterotoxemia in deer through inhibition of tight junction protein expression and immunoinflammation response. C. perfringens type C induced immunoinflammation response by disrupting cell membranes and inhibiting tight junction protein expression, caused intestinal bleeding and intestinal injury. This study provided new ideas on the molecular mechanism of regulation after C. perfringens infection in deer and provided a theoretical basis for the treatment of the disease.

Key words: Clostridium perfringens type C, intestinal loop model, enterotoxemia, deer, transcriptome

CLC Number: