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  • Title: Direct contact with herpes simplex virus-infected cells results in inhibition of lymphokine-activated killer cells because of cell-to-cell spread of virus.
    Author: York IA, Johnson DC.
    Journal: J Infect Dis; 1993 Nov; 168(5):1127-32. PubMed ID: 8228345.
    Abstract:
    Natural killer (NK) and lymphokine-activated killer (LAK) cells are disarmed after contact with herpes simplex virus (HSV)-infected cells. Cells infected with HSV-1 mutants that lack glycoproteins essential for viral entry into cells (gB, gD, gK, gH, and gL) did not inhibit LAK cells; cells infected with HSV-1 mutants that lack glycoproteins not required for virus entry into cells (gE, gI, gG, and gJ) inhibited lysis. LAK cells became infected after contact with target cells infected with wild-type HSV-1 but not with a gD-HSV-1, which cannot spread from cell to cell. Because LAK cells were inhibited only by very high concentrations of cell-free preparations of HSV and because neutralizing antibodies did not prevent infection of LAK cells in contact with infected cells, infection of LAK cells is probably greatly enhanced by the apposition of the effector and target cell membranes during target recognition. Disarming of immune effector cells by infection may be a general strategy for immune evasion by HSV.
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