感染引起的炎症会通过IL-1β信号破坏伤口愈合
Simone Shen1, Veronika Miskolci1, Colin N Dewey2
1Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA.
iScience
|April 5, 2024
概括
感染会影响伤口愈合,导致持续的炎症,即使细菌负载较低. 阻断IL-1R信号传递和早期的微生物清除是有效修复组织的关键.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 再生医学是一种再生医学.
背景情况:
- 伤口愈合是一个复杂的过程,容易被微生物感染破坏.
- 感染诱导的炎症影响组织修复的确切机制尚未完全理解.
- 斑马鱼为研究动态生物过程提供了一个独特的模型,因为它们的光学透明度和基因可处理性.
研究的目的:
- 研究感染引起的炎症在调节伤口愈合中的作用.
- 探索微生物炎酶激活对组织修复动态的影响.
- 确定影响感染,炎症和愈合之间的相互作用的关键因素.
主要方法:
- 使用斑马鱼作为具有透明组织的模型生物.
- 使用基因工程Listeria monocytogenes (Lm-Pyro) 诱导炎症酶激活.
- 评估了伤口愈合,炎症标志物 (il1b表达) 和IL-1R信号封锁.
- 确定了微生物清除时间对愈合结果的影响.
主要成果:
- 感染lm-pyro引发了持续的炎症和受损的伤口愈合,无论细菌负担如何.
- 炎症感染导致il1b基因表达的增加.
- 阻断IL-1受体 (IL-1R) 信号,在持续感染期间部分恢复伤口愈合.
- 确定微生物清除的关键早期窗口对于限制炎症和促进修复至关重要.
结论:
- 微生物诱导的炎症显著影响复杂的组织修复,独立于细菌负载.
- 炎症的动态,特别是持续的炎症,不利于有效的伤口愈合.
- 针对炎症途径 (例如IL-1R信号传递) 和确保及时的微生物清除对于优化受感染组织中伤口修复至关重要.
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