关于Mycobacterium abscessus的Dectin-1-独立的巨细胞化
Alma E Ochoa1, Jack H Congel1, Jodi M Corley1
1Department of Medicine, National Jewish Health, 1400 Jackson Street, Room A550, Denver, CO 80206, USA.
International journal of molecular sciences
|July 14, 2023
概括
宿主对Mycobacterium (MA) 的防御和巨细胞的识别不依赖Dectin-1. 这项研究发现,其他病原体识别受体 (PRR) 可能会独立于Dectin-1调解MA fagocytosis.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 传染性疾病 传染性疾病
背景情况:
- 菌根菌 (MA) 是一种机会性病原体,在患有慢性肺部疾病的人群中引起肺部感染.
- 对MA的宿主防御机制尚未完全理解,特别是涉及的巨细胞受体.
- 众所周知,C型莱克受体Dectin-1能够识别诸如Mycobacterium tuberculosis和其他非结核菌 (NTM) 等病原体.
研究的目的:
- 调查Dectin-1在对MA肺部感染的宿主防御中的作用.
- 为了确定阻断Dectin-1是否会影响人类巨细胞对MA的吸收.
- 为了比较Dectin-1缺乏和野生型小鼠的MA肺部感染结果.
主要方法:
- 用抗体阻断Dectin-1,以评估其对人类巨细胞对MA细胞形成的影响.
- 在Dectin-1淘汰赛 (Dectin-1-/-) 小鼠和野生型小鼠中比较MA肺部感染.
- 使用齐莫桑作为控制真菌抗原来验证Dectin-1阻塞.
主要成果:
- 阻止Dectin-1并没有损害MA的巨细胞化,但减少了zymosan摄入.
- 拉米纳林是一种Dectin-1抑制剂,降低了MA和zymosan的细胞化,表明其他病原体识别受体 (PRR) 的参与.
- 德克-1-/-小鼠在控制MA肺部感染方面没有出现缺陷,与野生型小鼠相比,免疫细胞种群没有显著差异.
结论:
- 针对MA肺部感染的小鼠防御和人类巨细胞摄入MA是独立于Dectin-1.
- 额外的PRRs,由拉米纳林准,在MA的巨细胞化中发挥作用.
- 需要进一步的研究来确定涉及MA认可和清除的特定PRR.
关键词:
这是Dectin-1的原始成分.这种细菌是Mycobacterium abscessus.巨细胞是一个巨细胞.没有结核的真菌菌菌.模式识别受体是一种模式识别受体.发酵细胞的形成 发酵细胞的形成更多相关视频
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