对减弱变种的多omics分析揭示了对SARS-CoV-2变种有害宿主的潜在评估标志物
Guangshan Xie1, Lin Zhu2,3, Siwen Liu4
1State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong SAR, China.
Science China. Life sciences
|September 18, 2023
概括
新的分子标记物,包括ODC1这样的关键聚胺生物合成分子,可以预测SARS-CoV-2变种的致病性. 这一发现有助于评估当前和新兴的病毒变异.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 由于突变,SARS-CoV-2变种构成持续的威胁,使病原性预测复杂化.
- 现有的方法难以准确评估新型病毒菌株的毒性,仅基于遗传序列.
研究的目的:
- 确定可靠的分子标记物,用于评估SARS-CoV-2变种的致病性.
- 探索聚胺生物合成在SARS-CoV-2变异病毒性中的作用.
主要方法:
- 野生型和减弱的SARS-CoV-2变种之间的蛋白质和代谢水平的比较分析.
- 使用人类呼吸道器官来模拟病毒复制的验证.
- 研究聚胺通路分子与氨酸-血管新生系统 (RAS) 和ACE2活性的关联.
主要成果:
- 聚胺生物合成中的六个关键分子 (普特,SAM,dc-SAM,ODC1,SAMS,SAMDC) 被差异上调并与变异性致病性相关.
- 通过RAS调节ODC1表达,并与ACE2活性呈正相关性.
- ODC1激活水平与各种SARS-CoV-2关注变种 (VOC) 的致病性质相关.
结论:
- 聚胺生物合成中的关键分子作为SARS-CoV-2变种病毒性的有效预测标记.
- 该策略提供了一个实用的工具,用于在实验模型中评估当前和新出现的SARS-CoV-2变种的病原性.
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