Previous Article | Next Article ![]()
Journal of Virology, April 1999, p. 2956-2962, Vol. 73, No. 4
Departments of
Immunology1 and Molecular
Biology,6 The Scripps Research Institute, La
Jolla, California 92037; Takasago Institute, Kaneka
Corporation, Takasago, Hyogo, Japan 6762;
Department of Pediatrics, Vanderbilt University School of
Medicine, Nashville, Tennessee 372323;
Food and Drug Administration, Rockville, Maryland
208574; Laboratory of Infectious
Diseases, National Institute of Allergy and Infectious Diseases,
Bethesda, Maryland 208925
Received 19 October 1998/Accepted 11 December 1998
A number of antibodies generated during human respiratory
syncytial virus (RSV) infection have been cloned by the
phage library approach. Antibodies reactive with an immunodominant
epitope on the F glycoprotein of this virus have a high affinity for
affinity-purified F antigen. These antibodies, however, have a much
lower affinity for mature F glycoprotein on the surface of infected
cells and are nonneutralizing. In contrast, a potent
neutralizing antibody has a high affinity for mature F protein
but a much lower affinity for purified F protein or F
protein in viral lysates. The data indicate that at least two F
protein immunogens are produced during natural RSV infection: immature
F, found in viral lysates, and mature F, found on infected cells or
virions. Binding studies with polyclonal human immunoglobulin G suggest
that the antibody responses to the two immunogens are of similar
magnitudes. Competitive binding studies suggest that overlap between
the responses is relatively limited. A mature envelope with an
antigenic configuration different from that of the immature envelope
has an evolutionary advantage in that the infecting virus is less
subject to neutralization by the humoral response to the immature
envelope that inevitably arises following lysis of infected cells.
Subunit vaccines may be at a disadvantage
because they most often resemble immature envelope molecules and ignore
this aspect of viral evasion.
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Human Antibody Responses to Mature and Immature
Forms of Viral Envelope in Respiratory Syncytial Virus Infection:
Significance for Subunit Vaccines
*
Corresponding author. Mailing address for R. Anthony
Williamson: Department of Immunology, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA 92037. Phone: (619) 784-8620. Fax: (619) 784-8360. E-mail: anthony{at}scripps.edu. Mailing
address for Dennis R. Burton: Department of Immunology, The Scripps
Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA
92037. Phone: (619) 784-9298. Fax: (619) 784-8360. E-mail:
burton{at}scripps.edu.
This article has been cited by other articles:
| J. Bacteriol. | Mol. Cell. Biol. | Microbiol. Mol. Biol. Rev. |
|---|
| Clin. Vaccine Immunol. | ALL ASM JOURNALS |
|---|