Herpes Simplex Virus‐Induced Expression of 70 kDa Heat Shock Protein (HSP70) Requires Early Protein Synthesis But Not Viral DNA Replication

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Abstract
The major 70 kDa heat shock protein (HSP70), which is scarcely expressed in unstressed rodent cells, was apparently induced by infection with herpes simplex virus (HSV). Infection with HSV types 1 and 2 elevated HSP70 mRNA levels within 4 hr post‐infection. HSP70 synthesis and accumulation increased in HSV‐infected cells. Irradiation of HSV with UV‐light abolished the ability to induce HSP70 mRNA. Inhibitors of viral DNA synthesis did not affect the induction of HSP70 in infected cells. Protein synthesis within 2 hr after infection was necessary for HSP70 induction.