酵母介导的显示:探测HopQ和CEACAM1的相互作用
Nasim Mofarrah1, Mohaddeseh Larypoor1, Jamileh Norozi1
1Department of Microbiology, Faculty of Biological Science, North Tehran Branch, Islamic Azad University, Tehran, Iran.
Iranian journal of microbiology
|January 9, 2026
概括
这项研究开发了一种酵母表面显示系统,以研究Helicobacter pylori (H. pylori) 粘附HopQ和人类CEACAM1.1之间的相互作用. 这个平台有效地模拟了结合,可以用于选H. pylori粘附抑制剂.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 杆菌 (H. pylori) 是一种与胃炎,胃潰瘍和胃癌相关的格拉姆阴性病原体.
- 细菌粘附HopQ介导H. pylori粘附到人类CEACAM1,促进疾病的进展.
- 了解HopQ-CEACAM1相互作用对于开发针对H. pylori感染的治疗策略至关重要.
研究的目的:
- 建立一个强大的酵母表面显示平台,用于研究H. pylori粘附HopQ和人类CEACAM1.1之间的相互作用.
- 为了验证平台在检测和量化HopQ-CEACAM1结合方面的有效性.
- 为针对H. pylori粘附的抑制剂进行高通量选奠定基础.
主要方法:
- 人类CEACAM1 N端域 (C1ND) 在Saccharomyces cerevisiae的表面使用Aga2融合表达.
- 蛋白质表达和表面定位通过西斑,共聚焦显微镜和流细胞计验证.
- 使用HopQ与GFP和GFP表达型H.pylori.结合进行了结合试验.
主要成果:
- 在酵母上成功地显示C1ND和C1ND-EGFP的表面被证实.
- 与对照组相比,流细胞计表明光信号和抗GFP阳性酵母显著更高 (P <0.01).
- 酵母显示的C1ND特别与HopQ-GFP和GFP表达的H. pylori结合,验证了模型.
结论:
- CEACAM1 N-域的酵母表面显示为研究HopQ-CEACAM1相互作用提供了一个有效的模型.
- 这一平台对识别新型抑制剂以阻断H. pylori粘附有前途.
- 开发的系统可以帮助制定针对H. pylori相关的胃肠道疾病的策略.
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