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J Virol. 1977 October; 24(1): 82-90

Crossed immunoelectrophoretic studies of the solubility immunogenicity of herpes simplex virus antigens.

ABSTRACT

The nonionic detergent Triton X-100 was capable of solubilizing 90% of the protein content in herpes simplex virus (HSV)-infected rabbit cornea cells. The solubilized HSV antigens formed well-characterized precipitates by crossed immunoelectrophoresis in Triton X-100-containing agarose gel, allowing both identification and relative quantitation. Water-soluble and detergent-requiring HSV antigens were identified by different solubilization procedures in buffer with and without detergent. Five glycoprotein antigens were solubilized only in the presence of detergent, indicating their membrane-bound state. One non-glycosylated antigen was present in both a water-soluble and a membrane-bound form. Based upon the crossed immunoelectrophoretic precipitating patterns of Triton X-100-solubilized HSV antigens, it has been estimated that infected cells yield an amount of virus-specific protein equivalent to 2,000 enveloped virions per cell. Rabbits inoculated intracutaneously with Triton X-100-solubilized HSV antigens developed neutralizing antibodies against HSV almost as effectively as rabbits with an active HSV infection. Precipitins against individual HSV antigens in sera from rabbits infected with HSV and immunized with the Triton X-100-solubilized HSV antigens were assayed by the crossed immunoelectrophoretic technique. Sera from infected rabbits reacted more strongly and with a higher number of HSV antigens than sera from immunized rabbits.