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Journal of Virology, July 1999, p. 5681-5687, Vol. 73, No. 7
Laboratory of Protein Chemistry,
Received 27 January 1999/Accepted 29 March 1999
The herpesvirus entry mediator A (HveA) is a recently characterized
member of the tumor necrosis factor receptor family that mediates the
entry of most herpes simplex virus type 1 (HSV-1) strains into
mammalian cells. Studies on the interaction of HSV-1 with HveA have
shown that of all the viral proteins involved in uptake, only gD has
been shown to bind directly to HveA, and this binding mediates viral
entry into cells. In addition to gD binding to HveA, the latter has
been shown to interact with proteins of tumor necrosis factor
receptor-associated factor family, lymphotoxin-
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Inhibition of Herpes Simplex Virus gD and
Lymphotoxin-
Binding to HveA by Peptide Antagonists
(LT-
), and a
membrane-associated protein referred to as LIGHT. To study the
relationship between HveA, its natural ligands, and the viral proteins
involved in HSV entry into cells, we have screened two phage-displayed
combinatorial peptide libraries for peptide ligands of a recombinant
form of HveA. Affinity selection experiments yielded two peptide
ligands, BP-1 and BP-2, which could block the interaction between gD
and HveA. Of the two peptides, only BP-2 inhibited HSV entry into CHO
cells transfected with an HveA-expressing plasmid. When we analyzed
these peptides for the ability to interfere with HveA binding to its
natural ligand LT-
, we found that BP-1 inhibited the interaction of
cellular LT-
with HveA. Thus, we have dissected the sites of
interaction between the cell receptor, its natural ligand LT-
and
gD, the virus-specific protein involved in HSV entry into cells.
*
Corresponding author. Mailing address: Protein
Chemistry Laboratory, Department of Pathology and Laboratory Medicine,
University of Pennsylvania, Philadelphia, PA 19104-6079. Phone: (215)
662-6165. Fax: (215) 573-2059. E-mail:
lambris{at}mail.med.upenn.edu.
Journal of Virology, July 1999, p. 5681-5687, Vol. 73, No. 7
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
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