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维里昂糖基化会影响菌菌的免疫识别能力
Krista G Freeman1, Anna C Robotham2, Olivia B Parks3
1Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA.
Cell host & microbe
|June 17, 2023
概括
菌菌体颗粒被糖化,这是以前未在菌体中报告的过程. 这种甘氨酸修饰可以保护菌体免受抗体结合,从而影响免疫反应,并可能有利于用于Mycobacterium感染的菌体治疗.
科学领域:
- 微生物学 微生物学
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 糖化在真核病毒中很常见,影响它们与宿主系统的相互作用.
- 之前没有报道过菌体的糖化,因为菌体通常会感染细菌,而不会进入宿主细胞质.
研究的目的:
- 为了研究菌体中糖化酶的存在和功能.
- 确定糖化对菌体与宿主免疫相互作用的影响及其对菌体治疗的潜力.
主要方法:
- 针对糖甘修饰的真菌菌体病毒的分析.
- 在体和尾管蛋白上O结合甘氨酸的表征.
- 在小鼠模型中对糖系菌体的抗体反应的研究.
- 基因组分析以识别菌体编码的葡萄糖转移酶.
主要成果:
- 几种不同的真菌菌体在囊体和尾管蛋白质上表现出O-链接的糖化.
- 糖基化保护菌素颗粒免受抗体结合,并减少中和抗体的产生.
- 菌体编码的葡萄糖转移酶调解了这种糖化.
- 基因组分析表明,糖系转移酶在菌根菌体中很常见,并且存在于一些Gordonia和Streptomyces的菌体中.
结论:
- 菌根细菌菌体具有一种新的糖化化机制.
- 这种糖基化会影响宿主免疫识别和抗体产生.
- 糖化可能会增强菌根菌的疗效,用于治疗Mycobacterium感染.
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