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Immune Interactions with Cells Infected with Herpes Simplex Virus: Antibodies to Radioiodinated Surface Antigens¹

From the Department of Microbiology, Louisiana State University Medical Center, New Orleans, Louisiana 70112

Abstract

Lactoperoxidase-catalyzed radioiodination was used to study reactions between surface antigens and antibodies on BHK-21 cells infected with HSV-1 and HSV-2. Isolation of iodinated surface antigens was achieved by indirect immune precipitation of Triton X-100-disrupted cells with antisera to HSV and IgG. Analysis of immune precipitates by polyacrylamide gel electrophoresis (PAGE) revealed at least 10 antigens, ranging in m.w. from 35 x 10³ to 160 x 10³ daltons. Antigens were detectable on cell surfaces as early as 2 hr post-infection. Electrophoretic patterns of surface antigens induced by HSV-1 were similar to those induced by HSV-2. In both cases the major portion of activity was associated with glycoprotein(s) in the range of 115 x 10³ to 130 x 10³ daltons. A reduced amount of radioactivity was obtained if cells were reacted with anti-HSV sera before disruption with Triton X-100, suggesting that less surface antigen was accessible to HSV antibody applied directly to intact cells.

Footnotes

¹ This work was supported by American Cancer Society Grant IM-38 and the National Institutes of Health Grant AI-10945.

² Present address: Unit for Laboratory Animal Medicine, University of Michigan Medical School, 010 Animal Research Facility, Ann Arbor, Michigan 48104.

³ Reprint requests and correspondence should be sent to: Dr. Jerry W. Smith, Department of Microbiology, L.S.U. Medical Center, 1542 Tulane Avenue, New Orleans, Louisiana 70112.