Send to

Choose Destination
Antiviral Res. 1992 Feb;17(2):145-56.

Deletion of the herpes simplex virus type 1 ribonucleotide reductase gene alters virulence and latency in vivo.

Author information

Syntex Research, Palo Alto, California.


The role of herpes simplex virus type 1 (HSV-1)-encoded ribonucleotide reductase (RR) has been investigated in mice and guinea pigs using a mutant from which 90% of the large subunit of the enzyme was deleted. The RR mutant was extremely impaired in its ability to induce external vaginal lesions or to cause death in mice following intracerebral, intraperitoneal, or intravaginal inoculation, or in guinea pigs following intraperitoneal or intravaginal inoculation. The RR mutant replicated poorly in the vagina of mice and guinea pigs when compared with the parental virus. Neither infectious nor latent virus was recovered from the trigeminal ganglia of mice or from the dorsal root ganglia of mice and guinea pigs after inoculation with the RR mutant. Using the polymerase chain reaction, RR mutant DNA was, nevertheless, detected in the dorsal root ganglia of guinea pigs. These studies suggest that HSV-1 RR is essential for virulence and may also play a role in the recovery of reactivatable latent virus from ganglia in both mice and guinea pigs.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center