结核菌菌 (Mycobacterium tuberculosis curli pili) 通过调节中央碳代谢来促进病原性
Tarien J Naidoo1, Shinese Ashokcoomar1, Barry Truebody2
1Medical Microbiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, 1st Floor Doris Duke Medical Research Institute, Congella, Private Bag 7, Durban, 4013, South Africa.
Metabolomics : Official journal of the Metabolomic Society
|August 12, 2025
概括
结核菌菌 (Mycobacterium tuberculosis curli pili (MTP)) 调节能量生产和新陈代谢. 这种新陈代谢的作用是: 删除MTP增加了对氧化酸化的依赖,并破坏了中央碳代谢,突出显示MTP是结核病的潜在生物标志物和治疗标.
科学领域:
- 微生物学 微生物学
- 生物化学 生化学
- 分子生物学分子生物学
背景情况:
- 宿主-病原体相互作用是结核病 (TB) 生物标志物的关键.
- 结核菌Mycobacterium tuberculosis curli pili (MTP) 是表面粘合物,参与宿主细胞相互作用,是结核病诊断和治疗的潜在目标.
- 在Mtb中央碳代谢 (CCM) 中MTP的作用尚未完全理解.
研究的目的:
- 调查MTP在Mtb生物能代谢中的作用.
- 通过代谢流量分析评估MTP对CCM的调节.
- 在氧化酸化 (OXPHOS) 抑制的背景下评估MTP的功能.
主要方法:
- 使用贝达基林 (BDQ) 抑制ATP合成酶和OXPHOS.
- 采用了细胞外流量分析.
- 与Mtb野生型 (WT),∆mtp删除突变和mtp补充菌株进行比较.
- 进行了13C6代谢流量分析,以研究CCM.
主要成果:
- 在BDQ治疗后,MTP与细菌呼吸的增加和糖解的减少相关.
- 与WT相比,Mtb Δmtp对OXPHOS的能源依赖程度更高.
- 代谢流量分析显示了Δmtp中的失调的CCM,通过糖解,TCA循环,酸盐/二酸盐通路和酸通路减少了流量.
结论:
- MTP在调节mtb的生物能量和代谢途径方面发挥着重要作用.
- MTP是结核病诊断和治疗的有前途的生物标志物.
- MTP代表了针对结核病的疫苗和药物开发的新目标.
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