多奥米特征分析确定了对SARS-CoV-2变种感染至关重要的保存代谢途径
bioRxiv : the preprint server for biology
|June 12, 2025
概括
感染SARS-CoV-2持续改变宿主细胞脂质代谢,跨越诸如Delta和Omicron之类的变体. 这种代谢重编程涉及关键酶,表明脂质通路是广泛抗病毒疗法的目标.
科学领域:
- 病毒学 病毒学
- 代谢学 代谢学 代谢学
- 蛋白质组学是指蛋白质组学.
背景情况:
- SARS-CoV-2 变种表现出增加的传染性和免疫逃避.
- 了解病毒诱导的宿主代谢重编程至关重要,尽管接种疫苗.
- 对SARS-CoV-2对宿主新陈代谢的影响机制尚未完全理解.
研究的目的:
- 为了研究SARS-CoV-2变种中保存的病毒诱导的脂质重塑.
- 为了确定脂质丰度的变化是否与脂质生物合成酶的变化相关.
- 为了确定宿主蛋白质对于SARS-CoV-2介导的脂质重塑至关重要.
主要方法:
- 在A549-ACE2细胞上的全球非向性脂组学和定量蛋白组学.
- 细胞感染SARS-CoV-2祖先WA1,Delta和Omicron变种的细胞感染.
- 对宿主蛋白质组变化的分析和与脂质组数据的相关性.
主要成果:
- 在脂质和蛋白质层面上,SARS-CoV-2 始终在各个变体中对宿主代谢进行重新编程.
- 确定了参与脂质重塑的关键宿主蛋白:FASN,LIPA和ORMDL2.
- 映射宿主代谢酶表达的变化与相应的脂质丰度转移相对应.
结论:
- SARS-CoV-2 变种显示保存的代谢依赖性.
- 主体脂质代谢受到SARS-CoV-2感染的显著改变.
- 准宿主脂质代谢可能提供针对SARS-CoV-2的广泛抗病毒策略.
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