一种呼吸道链球菌菌株抑制了Acinetobacter baumannii通过ferroptosis引起炎症损伤
Ye Sun1, Shuyin Li1, Yuchen Che1
1Key Lab of Environmental Pollution and Microecology of Liaoning Province, Shenyang Medical College, 146 Huanghe North Street, Yuhong District, Shenyang, 110034, China.
BMC microbiology
|October 28, 2024
概括
链球菌菌株D19T产生一种抗菌蛋白质,可以抑制Acinetobacter baumannii的生长,并防止呼吸道细胞炎症. 这种益生菌菌株为人类呼吸系统健康提供了保护.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 微生态平衡对健康至关重要.
- 链球菌A菌株,在呼吸道中普遍存在,抑制病原体.
- 链球菌菌株D19T从健康儿童的口腔和喉腔腔中分离出来.
研究的目的:
- 调查Streptococcus菌株D19T对抗Acinetobacter baumannii的抗菌机制.
- 识别和描述由D19菌株T菌株产生的抗菌成分.
- 阐明D19T菌株防止Acinetobacter baumannii诱导的炎症损伤的分子机制.
主要方法:
- 评估发酵条件对D19T抑制Acinetobacter baumannii的影响.
- 从D19T中分离和净化抗菌活性成分,使用诸如 (NH4) 2SO4沉和色谱等技术.
- 分析抑制和抗炎作用的分子机制.
主要成果:
- D19T发酵的超级成分,特别是53kDa的蛋白质,对Acinetobacter baumannii.表现出抗菌活性.
- 抗菌蛋白D19T破坏了Acinetobacter baumannii细胞膜的透性,抑制了生物膜的形成,并防止了细菌的粘附.
- 该蛋白质抵消了Acinetobacter baumannii诱导的铁和呼吸道细胞的炎症损伤.
结论:
- 链球菌菌株D19T显示出作为益生菌剂的潜力.
- 这种菌株有效地抑制了Acinetobacter baumannii的生长,并减轻了它对呼吸道细胞的炎症影响.
- 菌株D19T在维持人类呼吸系统健康方面起着保护作用.
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