扩大Mycobacterium abscessus参考菌株的范围,以改善肺部疾病建模
Ruth A Howe1, Chavis Tabor1, Chandra M Panthi1
1Division of Infectious Diseases, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD 21287, USA.
bioRxiv : the preprint server for biology
|December 3, 2025
概括
菌根 (Mab) 肺部疾病需要更好的模型. 临床的Mab分离物,而不是标准的ATCC 19977菌株,更好地模仿人类的Mab肺病进行研究.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 肺部病理学 肺部病理学
背景情况:
- 菌根 (Mab) 肺部疾病是一个新兴的健康问题,治疗选择有限.
- 目前对马布病的治疗方法漫长,复杂,治愈率低 (30-50%).
- 有效的临床前模型对于开发新的Mab病疗法至关重要,菌株选择至关重要.
研究的目的:
- 为了比较参考马布菌株ATCC 19977与临床隔离物对肺病建模的相关性.
- 为了确定更好地回顾人类Mab肺部感染的Mab菌株进行研究.
主要方法:
- 进行了体外测试,以评估Mab菌株的特征.
- 一个经过验证的小鼠肺部感染模型被用于在体内评估Mab菌株的行为.
- ATCC 19977与来自美国肺部感染的15个临床Mab分离物进行了比较.
主要成果:
- 参考菌株ATCC 19977显示出快速的全身传播,并且未能在小鼠模型中形成肺颗粒瘤.
- 与ATCC 19977相比,临床Mab分离物表现出较大的肺热带和减少的传播7.
- 几种临床隔离物诱导了强大的肺病理,更类似于人类的Mab肺病.
结论:
- 标准参考菌株ATCC 19977对于模拟Mab肺病并不理想.
- 临床的Mab分离物,特别是那些代表主要亚种的亚种,是研究Mab肺部感染的卓越模型.
- 使用这些临床分离物将提高未来的Mab研究和治疗开发的翻译价值.
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