解读Enterococcus faecalis感染后伤口愈合延迟的复杂性
Cenk Celik1, Stella Tue Ting Lee1, Frederick Reinhart Tanoto2
1School of Biological Sciences, Nanyang Technological University, Singapore, Singapore.
eLife
|May 20, 2024
概括
菌面膜菌感染通过改变细胞通信和促进抗炎环境,损害了伤口愈合. 这项研究使用单细胞RNA测序来揭示受感染的伤口中的关键分子变化.
科学领域:
- 伤口愈合研究研究研究.
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 文字转录学 (Transcriptomics) 是一个学科.
背景情况:
- 伤口感染,在糖尿病足和手术部位中常见,延迟愈合并增加发病率.
- Enterococcus faecalis经常在不愈合的伤口中检测到,但其在慢性伤口病原性中的作用尚不清楚.
研究的目的:
- 研究Enterococcus faecalis感染影响伤口愈合的细胞和分子机制.
- 创建一个单细胞的感染与未感染的伤口的转录图谱.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 在受感染和未受感染的小鼠伤口模型上进行.
- 对23,000多个细胞进行分析,以描述细胞和转录基因的特征.
- 在体外和体内实验,以评估巨细胞两极分化和细胞相互作用.
主要成果:
- 与未感染的伤口相比,受感染的伤口表现出明显的转录和代谢变化.
- 角质细胞和纤维细胞显示出失调的转录组,有助于抗炎环境.
- E. faecalis 感染诱导了皮细胞中过早,不完整的上皮细胞-介质细胞过渡和调节的M2 样巨细胞极化.
- 确定了巨细胞与中性细胞的交叉交叉,调节化学激素信号传递,促进与内皮细胞的抗炎相互作用.
结论:
- E. faecalis 感染显著改变了伤口的微环境,促进了免疫抑制,阻碍了正常的愈合过程.
- 这项研究为慢性伤口感染期间细菌,免疫细胞和结构细胞之间的分子对话提供了新的见解.
- 向E. faecalis介导的免疫抑制可能为改善慢性伤口愈合提供治疗策略.
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