Acta Veterinaria et Zootechnica Sinica ›› 2022, Vol. 53 ›› Issue (2): 556-566.doi: 10.11843/j.issn.0366-6964.2022.02.022

• PREVENTIVE VETERINARY MEDICINE • Previous Articles     Next Articles

Proteomic Analysis of Changes in the Mouse Brain Tissue Infected with Toxoplasma gondii Oocysts during the Acute and Chronic Stage

FU Ming1,2, HE Junjun2, ZHU Xingquan3,4, CONG Wei1,2*   

  1. 1. Marine College, Shandong University, Weihai 264209, China;
    2. State Key Laboratory of Veterinary Etiological Biology/Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China;
    3. College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China;
    4. Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
  • Received:2021-05-07 Online:2022-02-23 Published:2022-03-02

Abstract: Toxoplasma gondii is an opportunistic pathogen with a worldwide distribution, which can cause fatal encephalitis. Human acute toxoplasmosis is closely related to the contamination of T. gondii oocysts. To explore the pathogenic mechanism of T. gondii oocyst infection on the host and to prevent and control toxoplasmosis, we used iTRAQ to analyze the differential expression of proteins in mouse brain tissue after acute and chronic infection with T. gondii PRU strain oocysts. Compared with the control group, 85 and 51 differentially expressed proteins were identified in the acute and chronic infection, respectively, while 114 proteins were differentially expressed in the chronic versus acute infection. The functional analysis revealed that these differentially expressed proteins are mainly involved in pathways such as immune and metabolic processes. The results of our study provide important data for elucidating the host brain tissue damage and pathogenic mechanism caused by T. gondii oocysts in the acute and chronic infection.

Key words: Toxoplasma gondii, iTRAQ, brain, proteomics, bioinformatic analysis

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