SwePub - search: WFRF:(Parrish Nicholas F)

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1.	Aswad, Amr, et al. (author) Evolutionary history of endogenous Human Herpesvirus 6 reflects human migration out of Africa 2021 In: Molecular biology and evolution. - : Oxford University Press. - 0737-4038 .- 1537-1719. ; 38:1, s. 96-107 Journal article (peer-reviewed)abstract Human herpesvirus 6A and 6B (HHV-6) can integrate into the germline, and as a result about 70 million people harbour the genome of one of these viruses in every cell of their body. Until now, it has been largely unknown if i) these integrations are ancient, ii) if they still occur, and iii) whether circulating virus strains differ from integrated ones. Here we used next generation sequencing and mining of public human genome datasets to generate the largest and most diverse collection of circulating and integrated HHV-6 genomes studied to date. In genomes of geographically dispersed, only distantly-related people, we identified clades of integrated viruses that originated from a single ancestral event, confirming this with fluorescent in situ hybridization to directly observe the integration locus. In contrast to HHV-6B, circulating and integrated HHV-6A sequences form distinct clades, arguing against ongoing integration of circulating HHV-6A or "reactivation" of integrated HHV-6A. Taken together, our study provides the first comprehensive picture of the evolution of HHV-6, and reveals that integration of heritable HHV-6 has occurred since the time of, if not before, human migrations out of Africa.

Aswad, Amr, et al. (author)
Evolutionary history of endogenous Human Herpesvirus 6 reflects human migration out of Africa
2021
In: Molecular biology and evolution. - : Oxford University Press. - 0737-4038 .- 1537-1719. ; 38:1, s. 96-107
Journal article (peer-reviewed)abstract
- Human herpesvirus 6A and 6B (HHV-6) can integrate into the germline, and as a result about 70 million people harbour the genome of one of these viruses in every cell of their body. Until now, it has been largely unknown if i) these integrations are ancient, ii) if they still occur, and iii) whether circulating virus strains differ from integrated ones. Here we used next generation sequencing and mining of public human genome datasets to generate the largest and most diverse collection of circulating and integrated HHV-6 genomes studied to date. In genomes of geographically dispersed, only distantly-related people, we identified clades of integrated viruses that originated from a single ancestral event, confirming this with fluorescent in situ hybridization to directly observe the integration locus. In contrast to HHV-6B, circulating and integrated HHV-6A sequences form distinct clades, arguing against ongoing integration of circulating HHV-6A or "reactivation" of integrated HHV-6A. Taken together, our study provides the first comprehensive picture of the evolution of HHV-6, and reveals that integration of heritable HHV-6 has occurred since the time of, if not before, human migrations out of Africa.

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