过渡性FTY720治疗促进了慢性病毒感染的免疫中介清除
Mary Premenko-Lanier1, Nelson B Moseley, Sarah T Pruett
1Emory Vaccine Center and Department of Microbiology and Immunology, Yerkes National Primate Research Center and Emory University School of Medicine, 954 Gatewood Road, Atlanta, Georgia 30329, USA. mflanie@emory.edu
Nature
|August 16, 2008
概括
在感染淋巴细胞胆膜炎病毒 (LCMV) 的小鼠中,通过FTY720暂时诱导淋巴缺血,促进病毒清除. 这种治疗还通过增强T细胞反应来清除已确定的持续性LCMV感染.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 微生物学 微生物学
背景情况:
- 微生物感染的结果,无论是清除还是慢性,往往是不可预测的.
- 确定感染缓解与持续的因素尚不清楚.
- 在C57BL/6小鼠中淋巴细胞胆膜炎病毒 (LCMV) 感染作为模型,阿姆斯特朗菌株被清除,克隆13菌株持续存在.
研究的目的:
- 调查淋巴贫血在确定LCMV感染结果中的作用.
- 探索调节淋巴缺血症对病毒清除的治疗潜力.
主要方法:
- 使用FTY720.20在LCMV克隆13感染小鼠中诱导过渡性淋巴缺血症.
- 在治疗后评估病毒清除和T细胞反应 (CD4和CD8).
- 对FTY720在已确定的持续性LCMV感染中的疗效进行评估.
主要成果:
- 阿姆斯特朗菌株LCMV诱导早期淋巴缺血,与病毒清除相关.
- 在克隆13感染的小鼠中,FTY720治疗增加了淋巴缺血,导致病毒清除.
- 即使在已确定的感染中,FTY720治疗也保留或增强了LCMV特异性的CD4和CD8T细胞反应.
结论:
- 暂时诱导的淋巴缺血症,特别是当FTY720增强时,可以促进LCMV的清除.
- FTY720的机制包括增强宿主T细胞反应,抵消其典型的免疫抑制分类.
- 这些发现表明FTY720在开发慢性微生物感染的免疫疗法方面具有潜力.
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