线粒体碳素酶PCCA与Listeria monocytogenes脂酶PlcB相互作用,以调节细菌的存活率
Jing Wang1, Mingzhu Cui1, Yucong Liu1
1Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology and College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, Zhejiang, China.
propionyl-coenzyme A carboxylase (PCCA) 是一种与Listeria monocytogenes phospholipase PlcB.相互作用的新型宿主因子. 增加的PCCA水平抑制了细菌的增殖,这表明PCCA是对抗L. monocytogenes感染的潜在目标.
科学领域:
- 宿主-病原体相互作用
- 微生物的病原发生.
- 线粒体生物学 线粒体生物学
背景情况:
- 李斯特菌 (Listeria monocytogenes) 是一种重要的食物传播病原体.
- 脂酶PlcB对于L. monocytogenes的毒性至关重要.
- 线粒体是病原体操纵宿主细胞的关键目标.
研究的目的:
- 为了研究L. monocytogenes PlcB和宿主细胞线粒体之间的相互作用.
- 为了确定参与L. monocytogenes生存的新型宿主因素.
- 为了阐明 propionyl-coenzyme A carboxylase (PCCA) 在 L. monocytogenes 感染中的作用.
主要方法:
- 研究了PCCA和PlcB在宿主细胞中的相互作用和同位素.
- 使用siRNA和等离子体转染物操纵PCCA表达.
- 评估了与PCCA水平相关的L. monocytogenes的扩散.
- 在受感染的HeLa细胞中测量PCCA mRNA和蛋白质表达.
主要成果:
- 确定了PCCA和L. monocytogenes PlcB之间的新型相互作用,特别是涉及PCCA氨基酸504-508.8.
- 证明PCCA表达水平和L.单细胞原体的增殖之间存在逆相关性.
- 发现L. monocytogenes感染并没有显著改变PCCA表达水平.
结论:
- PCCA是一种新型宿主因子,可以负面调节L. monocytogenes的增殖.
- L. monocytogenes可能利用PlcB-PCCA相互作用来维持其生存的PCCA水平.
- 像PCCA这样的线粒体代谢酶代表了抗菌战略的潜在目标.
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