膜脂质重塑可以通过操纵胆固醇6'-乙糖化物生物合成来根除Helicobacter pylori
Lih-Lih Ong1,2,3,4, Hau-Ming Jan1,5, Hong-Hanh Thi Le1
1Institute of Biological Chemistry, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan.
Journal of biomedical science
|April 29, 2024
概括
用特定的脂肪酸修改宿主细胞膜,如酸乙醇胺 (PE) 中的脂肪酸,可以抑制Helicobacter pylori (H. pylori) 的粘附. 这种膜重塑策略显示出新的抗H. pylori疗法的前景.
科学领域:
- 微生物学 微生物学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 杆菌感染了人类一半的人口,导致胃部疾病.
- 杆菌利用宿主胆固醇合成胆固醇α-葡萄糖酸衍生物 (CAG).
- CAG乙基链很可能起源于宿主酸乙烯胺 (PE),影响膜功能.
研究的目的:
- 调查CAG和PE乙烯链如何影响宿主膜特性.
- 为了确定这些修改对H. pylori粘附的影响.
- 探索膜重塑作为对抗H. pylori的治疗策略.
主要方法:
- 在人类胃腺癌 (AGS) 细胞上合成并测试了11种具有不同乙烯链的CAG.
- 使用免疫光和光漂白后光恢复评估脂质集群和膜流动性.
- 在细胞和小鼠模型中通过流细胞计和免疫光染色评估H. pylori粘附.
- 使用UPLC-MS/MS.分析了H. pylori,AGS细胞和共同培养的脂质组.
主要成果:
- 具有特定乙链的CAG (CAG10:0,CAG18:3,CAG22:6) 最有效地抑制了细菌粘附.
- 通过产生CAG10:0和改变膜组成,PE(10:0) 2处理减少了H. pylori的粘附性.
- 早期的脂质组变化涉及到10:0的乙烯链合并到脂和陶中.
- 后来的变化显示,糖脂中的长链,单不和多不和脂肪酸增加,增强了膜流动性.
结论:
- 在AGS细胞和小鼠模型中,PE(10:0) 2治疗显著降低了H. pylori粘附性.
- 膜重塑是一种有前途的新型治疗方法,可以对抗H. pylori感染.
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