Metagenomic profiling of placental tissue suggests DNA virus infection of the placenta is rare.

Metagenomic profiling of placental tissue suggests DNA virus infection of the placenta is rare.
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DOI:
10.1099/jgv.0.001677
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发表时间:
2021-11
期刊:
The Journal of general virology
影响因子:
--
通讯作者:
Strang BL
Strang BL
中科院分区:
其他
文献类型:
--
作者:
Witney AA;Aller S;Strang BL

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人们普遍认为,病原体可以通过胎盘从母亲传播给胎儿。最近对宏基因组研究的重新评估表明,胎盘没有独特的胎盘细菌微生物组。然而,病毒通过胎盘传播,包括DNA病毒如人类疱疹病毒的传播是可能的。需要更全面地了解在胎盘中可以找到哪些DNA病毒序列。我们采用宏基因组分析来鉴定来自足月分娩(20次分娩)、早产(13次分娩)、与产前感染相关的妊娠(12次分娩)或与产前感染相关的早产(3次分娩)的胎盘宏基因组中的病毒DNA序列。我们的分析发现,在分析的48个宏基因组中,只有4个宏基因组中有少量与人类疱疹病毒基因组相对应的DNA序列。因此,我们的数据表明,胎盘的DNA病毒感染是罕见的,并支持胎盘基本上没有病原体感染的概念。
It is widely recognized that pathogens can be transmitted across the placenta from mother to foetus. Recent re-evaluation of metagenomic studies indicates that the placenta has no unique microbiome of commensal bacteria. However, viral transmission across the placenta, including transmission of DNA viruses such as the human herpesviruses, is possible. A fuller understanding of which DNA virus sequence can be found in the placenta is required. We employed a metagenomic analysis to identify viral DNA sequences in placental metagenomes from full-term births (20 births), pre-term births (13 births), births from pregnancies associated with antenatal infections (12 births) or pre-term births with antenatal infections (three births). Our analysis found only a small number of DNA sequences corresponding to the genomes of human herpesviruses in four of the 48 metagenomes analysed. Therefore, our data suggest that DNA virus infection of the placenta is rare and support the concept that the placenta is largely free of pathogen infection.
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