In vitro studies on the mechanism of herpesvirus plaque growth inhibition by sensitized lymphocytes.

AUTOR(ES)

Centifanto, Y M

RESUMO

Inhibition of herpesvirus plaque growth was observed when herpes simplex virus (HSV)-sensitized rabbit lymphocytes were placed in contact with an HSV-infected human foreskin monolayer. This inhibition was obtained as early as 3 h when a ratio of 6 viable lymphocytes to target cells was used, and the supernatants of these cultures also demonstrated plaque size reduction when put onto newly infected cell monolayers. Interferon, which is present in this system, had no effect on HSV when tested on human foreskin monolayers, indicating that interferon was not the mechanism for plaque size reduction. Plaque growth inhibition was attributed to the T lymphocyte, because purified T cells reduced plaque growth and anti-rabbit thymocyte serum eliminated the effect of T cells. The specificity of this assay was determined by the facts that nonsensitized lymphocytes did not reduce the size of a plaque and the recognition of an infected cell by the sensitized lymphocyte was necessary for the release of a soluble mediator into the supernatant fluid. This cytotoxic lymphocyte was detected in the peripheral blood of rabbits as early as 4 days after initial corneal infection, with a maximum response at 7 to 10 days.

Documentos Relacionados

• Specific in vitro antimannan-rich antigen of Candida albicans antibody production by sensitized human blood lymphocytes.
• Activation of human blood monocytes by products of sensitized lymphocytes.
• Studies on the Mechanism of Stem Growth Inhibition by Visible Radiation. 12
• In vitro mechanism of inhibition of bacterial cell growth by allicin.
• Microtechnique for studies on the role of monocytes in the stimulation of lymphocytes.