Quantitative Peptidomics of Mouse Brain After Infection With Cyst-Forming Toxoplasma gondii

文献类型: 外文期刊

第一作者: Zhou, Chun-Xue

作者: Zhou, Chun-Xue;Gao, Min;Han, Bing;Cong, Hua;Zhou, Huai-Yu;Zhu, Xing-Quan;Zhu, Xing-Quan

作者机构:

关键词: Toxoplasma gondii; mouse; brain; peptidomics; neuropeptide

期刊名称:FRONTIERS IN IMMUNOLOGY ( 影响因子:7.561; 五年影响因子:7.624 )

ISSN: 1664-3224

年卷期: 2021 年 12 卷

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收录情况: SCI

摘要: Toxoplasma gondii is an obligate intracellular parasite capable of establishing persistent infection within the host brain and inducing severe neuropathology. Peptides are important native molecules responsible for a wide range of biological functions within the central nervous system. However, peptidome profiling in host brain during T. gondii infection has never been investigated. Using a label-free peptidomics approach (LC-MS/MS), we identified a total of 2,735 endogenous peptides from acutely infected, chronically infected and control brain samples following T. gondii infection. Quantitative analysis revealed 478 and 344 significantly differentially expressed peptides (DEPs) in the acute and chronic infection stages, respectively. Functional analysis of DEPs by Gene Ontology suggested these DEPs mainly originated from cell part and took part in cellular process. We also identified three novel neuropeptides derived from the precursor protein cholecystokinin. These results demonstrated the usefulness of quantitative peptidomics in determining bioactive peptides and elucidating their functions in the regulation of behavior modification during T. gondii infection.

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