Herpesvirus Nuclear Egress

Advances in Anatomy, Embryology, and Cell Biology
Richard J Roller, Joel D Baines

Abstract

Herpesviruses assemble and package their genomes into capsids in the nucleus, but complete final assembly of the mature virion in the cell cytoplasm. This requires passage of the genome-containing capsid across the double-membrane nuclear envelope. Herpesviruses have evolved a mechanism that relies on a pair of conserved viral gene products to shuttle the capsids from the nucleus to the cytoplasm by way of envelopment and de-envelopment at the inner and outer nuclear membranes, respectively. This complex process requires orchestration of the activities of viral and cellular factors to alter the architecture of the nuclear membrane, select capsids at the appropriate stage for egress, and accomplish efficient membrane budding and fusion events. The last few years have seen major advances in our understanding of the membrane budding mechanism and helped clarify the roles of viral and cellular proteins in the other, more mysterious steps. Here, we summarize and place into context this recent research and, hopefully, clarify both the major advances and major gaps in our understanding.

Citations

Feb 1, 2018·Journal of Morphology·Nicole LaMassaGreg R Phillips
Apr 19, 2019·Journal of Virology·Jenna Barnes, Duncan W Wilson
Sep 13, 2019·Journal of Virology·Tongtong WangYong Huang
Jun 7, 2020·Journal of Cell Science·Jeffrey M VerboonSusan M Parkhurst
Mar 5, 2021·Journal of Virology·Masoudeh Masoud Bahnamiri, Richard J Roller
May 1, 2021·Viruses·Chung-Pei Lee, Mei-Ru Chen

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