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Title: Herpes simplex virus 1 induces egress channels through marginalized host chromatin

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep28844· OSTI ID:1414761
 [1];  [2];  [1];  [3];  [2];  [4];  [5];  [6];  [4];  [7];  [2]
  1. Univ. of Jyvaskyla (Finland). Dept. of Physics and Nanoscience Center
  2. Univ. of Jyvaskyla (Finland). Dept. of Biological and Environmental Science and Nanoscience Center
  3. Univ. of California, San Francisco, CA (United States). Dept. of Anatomy; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Univ. of Turku (Finland)
  5. International Center for Research in Infectiology, Lyon (France); Ecole Normale Superieure, Lyon (France); Univ. of Lyon (France). LabEx Ecofect
  6. Univ. of Jyvaskyla (Finland). Dept. of Physics and Nanoscience Center; ITMO uUniv., St. Petersburg (Russia)
  7. Univ. of California, San Francisco, CA (United States). Dept. of Anatomy; Univ. of Turku (Finland)

Lytic infection with herpes simplex virus type 1 (HSV-1) induces profound modification of the cell nucleus including formation of a viral replication compartment and chromatin marginalization into the nuclear periphery. Here, we used three-dimensional soft X-ray tomography, combined with cryogenic fluorescence, confocal and electron microscopy, to analyse the transformation of peripheral chromatin during HSV-1 infection. Our data showed an increased presence of low-density gaps in the marginalized chromatin at late infection. Advanced data analysis indicated the formation of virus-nucleocapsid-sized (or wider) channels extending through the compacted chromatin of the host. Importantly, confocal and electron microscopy analysis showed that these gaps frequently contained viral nucleocapsids. Our results demonstrated that HSV-1 infection induces the formation of channels penetrating the compacted layer of cellular chromatin and allowing for the passage of progeny viruses to the nuclear envelope, their site of nuclear egress.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1414761
Journal Information:
Scientific Reports, Vol. 6, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (4)

Chromatin organization regulates viral egress dynamics journal June 2017
Venture from the Interior—Herpesvirus pUL31 Escorts Capsids from Nucleoplasmic Replication Compartments to Sites of Primary Envelopment at the Inner Nuclear Membrane journal November 2017
X-ray Microscopy book January 2019
X-ray microscopy journal July 1965