在Landrace和Piétrain猪中T淋巴细胞PCV2敏感性的不同分子基础
Yueling Ouyang1, Hans J Nauwynck2
1Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium. yueling.ouyang@ugent.be.
Veterinary research
|February 19, 2024
概括
兰德拉斯猪比皮特兰猪更容易感染猪类型2 (PCV2) 猪病毒感染,这是由于病毒分解和淋巴细胞内内体内逃逸的差异. 这影响了对猪肉病毒相关疾病 (PCVADs) 的易感性.
科学领域:
- 兽医病毒学 兽医病毒学
- 免疫学 免疫学 免疫学
- 猪的遗传学 猪的遗传学
背景情况:
- 与皮特兰猪相比,Landrace猪对猪肉病毒相关疾病 (PCVADs) 的敏感性更高.
- 此前已经确立了T淋巴细胞的猪肉病毒2型 (PCV2) 感染.
研究的目的:
- 在兰德拉斯和皮特兰猪淋巴细胞中研究六种PCV2菌株的复制动力学.
- 阐明导致品种特异性易受PCV2感染的机制.
主要方法:
- 在Landrace和PiétrainT淋巴细胞中对PCV2复制的比较分析.
- 研究病毒结合,内化和拆卸过程.
- 对蛋白酶活性和内体体逃生机制的评估.
主要成果:
- 兰德雷斯T淋巴细胞比皮特兰T淋巴细胞对PCV2感染的敏感度要高得多.
- PCV2复制依赖于菌株,并受到病毒分解和蛋白酶活性在品种特异性的差异的影响.
- 病毒结合和内部化没有显示出品种差异,但在皮特兰猪中,分解受损.
结论:
- 品种特异性PCV2易感性的差异归因于病毒分解和内分体逃逸的变化.
- 在Landrace淋巴细胞的较低pH值下增强的蛋白酶活性有助于PCV2复制.
- 这些发现为PCVADs和品种耐药性的病原发生提供了关键的见解.
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