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Updated: Jul 4, 2026

Temporal Analysis of the Nuclear-to-cytoplasmic Translocation of a Herpes Simplex Virus 1 Protein by Immunofluorescent Confocal Microscopy
Published on: November 4, 2018
HSV-1 ICP27 suppresses NF-kappaB activity by stabilizing IkappaBalpha
Jin Chul Kim1, Soo Yun Lee, Sang Young Kim
1Department of Microbiology, School of Bioscience and Biotechnology, Chungnam National University, Daejeon 305-764, Republic of Korea.
Abstract:
Nuclear factor kappaB (NF-kappaB) is associated with the transcriptional activation of genes encoding chemokines, adhesion molecules, cytokines, and anti-apoptotic proteins, which are key components in immune responses and viral infection. Many viruses modulate NF-kappaB through numerous viral gene products to allow productive infections and immune escape. Here we report that herpes simplex virus-1 infected cell protein 27 (HSV-1 ICP27), an immediate early protein of HSV-1, represses NF-kappaB activity through binding to inhibitor of kappaB (IkappaBalpha), blocking phosphorylation and ubiquitination of IkappaBalpha, and stabilizing IkappaBalpha. These data may explain how NF-kappaB activity is regulated by ICP27 to escape immune responses during the very early period of HSV-1 infection.
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