移植患者的扭矩微型病毒 (TTV):物种多样性和变异性
Noelia Soledad Reyes1, Pietro Giorgio Spezia2, Raquel Jara1
1Virology Unit, Centro de Educación Médica e Investigaciones Clínicas (CEMIC) University Hospital, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Galván 4102, Buenos Aires C1631FWO, Argentina.
Viruses
|March 28, 2024
概括
扭矩病毒 (TTV) 在移植接受者中表现出高度的物种多样性,随着时间的推移发生了显著变化. 这项研究发现TTV物种多样性与病毒载量之间没有相关性.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
背景情况:
- 来自Anelloviridae家族的非致病性ssDNA病毒Torque Teno Virus (TTV) 正在作为移植患者的潜在生物标志物进行研究.
- 了解TTV多样性及其与病毒载荷的关系对于评估其在移植受体中的作用至关重要.
研究的目的:
- 在移植接受者中调查Torque Teno Virus (TTV) 物种多样性和变异性.
- 在这些患者中,将TTV物种多样性与TTV病毒载量相关联.
主要方法:
- 实时PCR测定被用于量化TTV病毒载量在27个接受者的30个血样本中.
- 使用滚动圆放大 (RCA) 结合下一代测序 (NGS) 和ORF1遗传学分析来确定TTV物种多样性.
- 在三个患者中评估了TTV变异性,分别采用了移植前和移植后的样本.
主要成果:
- 检测到TTV物种的多样性很高,在单个样本中确定了多达15种不同的物种.
- 移植前的样本显示了5种TTV物种的中位数,其中TTV3和TTV13是最常见的.
- 移植后的样本中2种TTV物种的中位数较低,TTV3仍然是最常见的.
- 没有观察到TTV物种数量与病毒载量之间的显著相关性.
- 随着时间的推移,在TTV物种组成中观察到显著的宿主内部变异性.
结论:
- 接受脏移植的人体内含有多种多样的Torque Teno Virus (TTV) 物种,特别是在移植前.
- 随着时间的推移,TTV物种组成在个体内表现出相当大的变化.
- 尽管TTV物种多样性很高,但在这个队列中没有发现与病毒载荷的显著关联.
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