Abstract:
:Us3 is a serine-threonine protein kinase that is encoded by herpes simplex virus 1 (HSV-1). In experimental animal models of HSV infection, peripheral and intracranial inoculations can be used to study viral pathogenicity in peripheral sites (e.g., eyes and vagina) and central nervous systems (CNSs), respectively. In addition, peripheral inoculation can be used to investigate this virus' ability to invade the CNS (neuroinvasiveness) from peripheral sites. HSV-1 Us3 has previously been shown to be critical for viral pathogenicity in both peripheral sites and CNSs of mice. However, the role of HSV-1 Us3 in viral neuroinvasiveness has not yet been elucidated. In the present study, the yields of a Us3 null mutant virus and its repaired virus in the eyes, trigeminal ganglia, and brains of mice following ocular inoculation were examined. It was found that, although the repaired virus appeared in the brains of mice 3 days after infection, peak replication occurring 7 days after infection, no viral replication of the Us3 null mutant virus was detectable. These findings indicate that HSV-1 Us3 plays a crucial role in the ability of the virus to invade the brain from the eyes. Thus, HSV-1 Us3 is a significant neuroinvasiveness factor in vivo.
journal_name
Microbiol Immunoljournal_title
Microbiology and immunologyauthors
Koyanagi N,Imai T,Arii J,Kato A,Kawaguchi Ydoi
10.1111/1348-0421.12108subject
Has Abstractpub_date
2014-01-01 00:00:00pages
31-7issue
1eissn
0385-5600issn
1348-0421journal_volume
58pub_type
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