内源逆转录病毒在被外源病毒感染的人群中的传播
1Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4L8, Canada.
Viruses
|June 27, 2025
概括
外源逆转录病毒 (XRVs) 进化高毒性与低母性传播或相反. 内源逆转录病毒 (ERV) 可以传播,可能消除XRV,并清除这两种逆转录病毒的种群.
科学领域:
- 进化生物学是进化的生物学.
- 病毒学 病毒学
- 遗传学 遗传学 是一个
背景情况:
- 逆转录病毒,包括外源性 (XRVs) 和内源性 (ERVs),将DNA整合到宿主染色体中.
- XRVs感染体细胞并以传染方式传播,而ERVs集成到生殖细胞中并通过遗传传播.
- ERVs可以通过转移在基因组内繁殖,起源于最初的XRV插入.
研究的目的:
- 为了建模XRV毒性的进化动态受母亲传播的影响.
- 分析ERV基因在人口中的固定概率和传播.
- 调查ERVs对XRV传播和人口水平逆转录病毒负载的影响.
主要方法:
- 复原病毒进化和传播的数学建模.
- 基于母体和水平传播率的XRV毒性分析.
- 计算ERV固定概率,考虑到毒性,转移和对XRV的潜在抵抗力.
主要成果:
- 在XRV的演变过程中,出现了一种权衡:高毒性与低母性传播,或低毒性与高母性传播.
- ERV 固定概率受其自身的毒性,转移速率以及它是否对 XRV 产生抗性的影响.
- 即使没有固定,ERV也可以导致XRV消除,可能清除两种逆转录病毒类型的人群.
结论:
- 母亲传播显著影响了XRV毒性的进化轨迹.
- ERVs可以作为对XRVs的选择性力量,健身成本和阻力赋予更高的固定概率.
- ERVs和XRVs之间的相互作用可以导致复杂的种群动态,包括两种病毒类型的完全根除.
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