Pathogenicity of glycoprotein C-deficient herpes simplex virus 1 strain TN-1 which encodes truncated glycoprotein C.

Abstract:

:A clinical isolate of herpes simplex virus 1 (TN-1) from a stromal keratitis patient was found to be defective in the glycoprotein C (gC) gene (UL44), thus resulting in the production of truncated gC upon infection. To study the pathogenetic role of truncated gC, we prepared a recombinant LTN-8 derived from TN-1 with deletions of the 1.5 kilobase pairs of the gC gene including the initiation codon. A penetration assay revealed LTN-8 to be less efficient in its penetration ability than TN-1, the laboratory strain KOS and RTN-1-20-3, a recombinant derived from TN-1 with the KOS gC gene. The penetration of LTN-8 was facilitated by the addition of TN-1-infected culture medium. TN-1 virus preparations had no hemagglutinating activity. However, the animals infected with TN-1 did develop hemagglutination inhibition (HI) antibodies. The LTN-8-infected animals did not develop HI antibodies. The pathogenicity in BALB/c mice following either corneal, intraperitoneal or intracerebral inoculation did not significantly differ among TN-1, RTN-1-20-3 or LTN-8. Our results indicate that truncated gC was sufficient for the induction of HI antibodies and was also able to facilitate penetration in vitro. Although truncated gC might be a virulence factor acting as a decoy, both truncated gC and intact gC had little effect on the outcome following intracerebral, intraperitoneal or corneal inoculation.

journal_name

Microbiol Immunol

authors

Minagawa H,Liu Y,Yoshida T,Hidaka Y,Toh Y,Mori R

doi

10.1111/j.1348-0421.1997.tb01890.x

subject

Has Abstract

pub_date

1997-01-01 00:00:00

pages

545-51

issue

7

eissn

0385-5600

issn

1348-0421

journal_volume

41

pub_type

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