RAGE参与了Campylobacter jejuni细胞杀伤性扩张毒素的细胞内运输
Yu-Fang Chang1, Yi-Ping Huang2, Chia-Huei Chou3
1Graduate Institute of Biomedical Sciences, Department of Microbiology and Immunology, Chang Gung University, Taoyuan, Taiwan.
概括
细胞杀伤性扩张毒素 (CDT) 使用先进糖化终产品 (RAGE) 的受体进入宿主细胞. 阻止RAGE可以减少CDT.
科学领域:
- 微生物学 微生物学
- 细胞生物学 细胞生物学
- 毒理学 毒理学 毒理学
背景情况:
- 细胞致死性扩张毒素 (CDT) 是一种与Campylobacter jejuni胃肠炎相关的基因毒素.
- CDT激活了与危险相关的分子模式 (DAMP) 信号,导致细胞损伤.
- 需要进一步调查CDT的细胞贩运和中毒机制.
研究的目的:
- 阐明细胞中毒毒素 (CDT) 的细胞贩运和中毒机制.
- 识别参与CDT进入和病变发生的宿主细胞受体和途径.
主要方法:
- 重组CDT子单元 (CdtA,CdtB,CdtC) 的净化和表征.
- 利用分子方法和图像跟踪来分析胃肠细胞中CDT的输送.
- 研究了RAGE和HMGB1在CDT细胞进入中的作用.
主要成果:
- 通过与高级糖化终产品 (RAGE) 和高流动性组盒1 (HMGB1) 的受体相互作用,CDT进入细胞.
- CdtB的运输通过一种依赖于胺的内细胞通路发生,其中涉及溶解体.
- 阻断RAGE信号减少了CDT诱导的细胞循环停止,使RAGE在病变发生过程中受到影响.
结论:
- 愤怒在CDT手机贩运中起着至关重要的作用.
- 这些发现增强了对宿主细胞中毒的理解,由Campylobacter jejuni CDT.
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