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在RNASE6中一个常见的多态性影响其对尿病原菌大肠杆菌的抗菌活性
Raul Anguita1, Guillem Prats-Ejarque1, Mohammed Moussaoui1
1Department of Biochemistry and Molecular Biology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain.
International journal of molecular sciences
|January 11, 2024
概括
人类核糖酶6 (RNase6) 变体影响尿路感染 (UTI) 的易感性. R66变种对尿路病原菌的抗微生物活性比Q66变种更强,这表明它在尿路感染防御中的作用.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 遗传学 是一个遗传学.
背景情况:
- 人类核糖酶6 (RNase6) 是一种来自单细胞和巨细胞的蛋白质,具有抗菌性质.
- RNASE6基因因单核酸多态性 (SNPs) 导致遗传变异,影响蛋白质功能.
- rs1045922是RNASE6中常见的非同义SNP,导致在66位 (R66Q) 的氨酸 (R) 替代谷氨酸 (Q).
研究的目的:
- 调查RNase 6R66和Q66变体对泌尿病原性大肠杆菌 (UPEC) 的抗菌活性.
- 了解R66Q替代如何影响蛋白质的静电电荷和细菌相互作用.
- 探索RNASE6 SNP分布对尿路感染 (UTI) 易感性的潜在影响.
主要方法:
- 重组RNase 6 R66和Q66蛋白质变体的生成.
- 确定针对UPEC的抗菌活性.
- 结构分析以评估静电电荷变化.
- 评估细菌凝结和脂多糖化合物结合能力.
主要成果:
- 与Q66变异相比,R66变异被SNP rs1045922的主要等位基编码,对UPEC具有显著更高的杀菌活性.
- R66变体的增强活性与增加的脂多糖结合和细菌凝结有关.
- 在R66和Q66变体之间,酶效率仍然可比.
结论:
- RNase 6的R66变体对UPEC具有优越的抗微生物疗效,可能是由于表面电荷变化和细菌相互作用增强.
- 在RNASE6基因中常见的SNPrs1045922可能会影响个体对尿路感染的易感性.
- 需要进一步研究RNASE6 SNP流行率及其对尿路感染易感性的作用.
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