您好，欢迎访问湖北省农业科学院 机构知识库！
湖北省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Pathological observation and transcriptomic analysis of thymus injury in PRRSV-infected piglets

文献类型： 外文期刊

作者： Su, Naying 1 ; Lin, Zhengdan 1 ; Liu, Xi 1 ; Sun, Xiuxiu 1 ; Jin, Xinxin 1 ; Feng, Helong 1 ; Zhan, Cunlin 1 ; Hu, Xueying 1 ; Gu, Changqin 1 ; Zhang, Wanpo 1 ; Cheng, Guofu 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Anim Med, Wuhan, Hubei, Peoples R China

2.Shanghai InnoStar Biotech Co Ltd, Shanghai, Peoples R China

3.Hubei Acad Agr Sci, Wuhan, Hubei, Peoples R China

关键词： Porcine reproductive and respiratory syndrome virus; Piglets; Thymus; Transcriptome; Histopathological findings

期刊名称：VETERINARY RESEARCH COMMUNICATIONS （ 影响因子：2.2； 五年影响因子：2.3 ）

ISSN： 0165-7380

年卷期： 2023 年

页码：

收录情况： SCI

摘要： The thymus, the central immune organ in mammals, plays an important role in immune defense. Porcine reproductive and respiratory syndrome virus (PRRSV) infection in piglets can cause thymus injury and immunosuppression. However, the mechanisms of thymus injury remain unknown. This study was aimed at investigating the specific manifestations of thymus injury through the construction of a PRRSV-infected piglet model and histopathological observation. In this study, fourteen 40-day-old PRRSV-free piglets were randomly divided into two groups, eleven of which were intramuscularly injected with 3 mL of PRRSV WUH3 virus suspension (10(6) PFU /mL) in the infection group, and three of which were sham-inoculated with 3 mL of RPMI-1640 medium in the control group. Clinical necropsy and samples collection were performed on day 8 after artificial infection. With the Illumina platform, the transcriptomes of piglet thymus tissues from infected and control piglets were sequenced to explore the relationships of differentially expressed genes (DEGs) and signaling pathways with thymus injury. The immune organs of PRRSV-infected piglets were severely damaged. The histopathological findings in the thymus indicated that PRRSV infection was associated with a large decrease in lymphocytes, cell necrosis and cell apoptosis; an increase in blood vessels and macrophages; thymic corpuscle hyperplasia; and interstitial widening of the thymic lobules. The transcriptomic analysis results revealed that the Gene Ontology functions of DEGs were enriched primarily in biological processes such as angiogenesis, regulation of angiogenesis and positive regulation of cell migration. Moreover, greater numbers of blood vessels and macrophages were observed in the thymus in PRRSV-infected than control piglets. KEGG pathway enrichment analysis revealed that the DEGs were significantly enriched in the Toll-like receptor signaling pathway, chemokine signaling pathway, IL-17 signaling pathway and TNF signaling pathway. The expression of TLR8, IRF5, the chemokines CCL2, CCL3L1 and CCL5; and their receptors CCR1, CCR2 and CCR5 was significantly up-regulated in PRRSV infection, thus suggesting that these cytokines were associated with the pathological processes of thymus injury.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：湖北省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台