Journal
VIRUSES-BASEL
Volume 11, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/v11040383
Keywords
abalone; transcriptome; immune-related genes; apoptosis; HaHV-1
Categories
Funding
- Laboratory for Marine Fisheries Science and Food Production Processes [2016LMFS-B16]
- China Agriculture Research System [CARS-49]
- University of Padova [UNIPD-BIRD 168432]
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Haliotid herpesvirus-1 (HaHV-1) is the first identified gastropod herpesvirus, causing a highly lethal neurologic disease of abalone species. The genome of HaHV-1 has been sequenced, but the functions of the putative genes and their roles during infection are still poorly understood. In the present study, transcriptomic profiles of Haliotis diversicolor supertexta at 0, 24 and 60 h post injection (hpi) with HaHV-1 were characterized through high-throughput RNA sequencing. A total of 448 M raw reads were obtained and assembled into 2.08 x 10(5) unigenes with a mean length of 1486 bp and an N50 of 2455 bp. Although we detected increased HaHV-1 DNA loads and active viral expression at 24 hpi, this evidence was not linked to significant changes of host transcriptomic profiles between 0 and 24 hpi, whereas a rich immune-related gene set was over-expressed at 60 hpi. These results indicate that, at least at the beginning of HaHV-1 infection, the virus can replicate with no activation of the host immune response. We propose that HaHV-1 may evolve more effective strategies to modulate the host immune response and hide during replication, so that it could evade the immune surveillance at the early stage of infection.
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