来自Mycoplasma bovis的ENO1通过结合ACTB来破坏宿主糖解和炎症
Rui-Rui Li1, Xiao-Jiao Yu1, Jia-Yin Liang1
1College of Animal Science and Technology, Shihezi University, Shihezi 832000, China.
Biomolecules
|August 28, 2025
概括
菌体效应器ENO1针对宿主β-actin,重编程新陈代谢和免疫力. 这种相互作用激活了糖解和炎症,为这种牛病原体提供了新的治疗点.
科学领域:
- 兽医微生物学
- 分子病变
- 主体与病原体的相互作用
背景情况:
- 由于呼吸道疾病,乳腺炎和关节炎,Mycoplasma bovis在牛群中造成重大经济损失.
- 需要进一步阐明Mycoplasma bovis的致病机制,特别是宿主-致病原体相互作用.
研究的目的:
- 为了识别 Mycoplasma bovis 分泌的宿主目标.
- 阐明效应体与宿主相互作用在代谢和免疫调节中的作用.
主要方法:
- GST拉下测定与质谱相结合,以确定ENO1的宿主蛋白标.
- 生物化学测定以描述ENO1-ACTB相互作用及其下游影响.
主要成果:
- 确定了β-actin (ACTB) 作为Mycoplasma bovis效应器ENO1的主要宿主目标.
- 证明ENO1-ACTB的相互作用可提高Glut1的调节,从而诱导华堡效应 (糖解激活,乳酸积累,ATP抑制).
- 表明这种相互作用激活了ROS介导的炎症轴 (HIF-1α/ IL-1β和IL-6/ TNF-α).
结论:
- 建立了第一个细菌效应器劫持宿主ACTB的证据.
- 发现了一种新的"糖解-ACTB-ROS-炎症"轴.
- 提供了与细胞因子风暴协调的细菌蛋白质的第一次演示, 提供了潜在的抗感染点.
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