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在营养限制下对病毒细胞资源进行操纵
Morgan M Lindback1, Cristina Howard-Varona2, Jane Fudyma3
1Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan, USA.
mSystems
|June 24, 2025
概括
酸盐限制会根据感染病毒而改变病毒感染细胞 (病毒细胞) 的新陈代谢. 病毒细胞明显地操纵细胞内资源和细胞外代谢物,影响营养稀缺的情况下的生态系统过程.
科学领域:
- 微生物生态学 微生物生态学
- 病毒学 病毒学
- 代谢学 代谢学 代谢学
- 系统生物学 系统生物学
背景情况:
- 病毒感染的细胞 (病毒细胞) 显著影响宿主代谢和生态系统功能.
- 营养限制对维罗细胞代谢和资源操纵的影响仍然不太清楚.
- 了解病毒细胞对环境条件的反应对于海洋生态系统动态至关重要.
研究的目的:
- 研究酸盐限制如何影响维罗细胞中的细胞内和细胞外资源操纵.
- 为了比较两个无关的dDNA病毒 (PSA-HS2和PSA-HP1) 感染的病毒细胞在营养限制下的代谢反应.
- 阐明不同类型的病毒细胞在压力下产生的独特生态系统足迹.
主要方法:
- 利用了来自Pseudoalteromonas virocells的转录组,蛋白组,内和外代谢组数据.
- 在酸盐限制下,分析了独立感染dDNA病毒PSA-HS2和PSA-HP1的病毒细胞.
- 在HS2病毒细胞,HP1病毒细胞和未感染细胞之间比较代谢概况和资源分配.
主要成果:
- 这两种病毒细胞都减少了de novo核酸合成蛋白,并增加了铁的储存.
- HP1病毒细胞在感染后期增加了氨基酸生产,但总体池较低;HS2病毒细胞转向了脂回收.
- 惠普1病毒细胞表现出增加的膜流动性,多 (压力标志物),不和碳化合物和富含氧气的细胞外代谢物.
结论:
- 酸盐限制诱导不同细胞内资源操纵策略,在受无关病毒感染的病毒细胞.
- 病毒细胞在营养有限的条件下表现出独特的细胞外代谢特征和应激反应.
- 环境条件在很大程度上影响了病毒细胞活动及其生态系统规模的代谢产出.
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