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J. Virol., 12 1996, 8402-8410, Vol 70, No. 12
E Maidji, S Tugizov, T Jones, Z Zheng and L Pereira
Human cytomegalovirus (CMV) encodes accessory glycoproteins that are
dispensable for virus growth in nonpolarized cells in culture. We report
that CMV deletion mutants lacking the gene for accessory glycoprotein US9
in the unique short component of the viral genome are impaired in plaque
formation in polarized human retinal pigment epithelial (ARPE-19) cells.
Comparison of CMV deletion mutants in US9 with herpes simplex virus type 1
deletion mutants lacking glycoproteins gE and gI showed that both of these
mutants are impaired in altering junctional complexes and increasing
paracellular permeability in polarized ARPE-19 cells cultured on permeable
filter supports. Results of functional studies indicate that CMV US9 and
homologs of gE have analogous roles in promoting virus spread across
lateral membranes of polarized epithelial cells.
Copyright © 1996, American Society for Microbiology
Accessory human cytomegalovirus glycoprotein US9 in the unique short component of the viral genome promotes cell-to-cell transmission of virus in polarized epithelial cells
Department of Stomatology, School of Dentistry, University of California San Francisco, 94143-0512, USA.
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