Neutralization of Human Cytomegalovirus by Human CD13-Specific Antibodies

The mechanisms of inhibition of cytomegalovirus (CMV) infection by human CD13 (aminopeptidase N)-specific antibodies were studied. These antibodies protect CD13-negative and -positive cells from CMV infection only if incubated with the virus inoculum, suggesting they bind to CMV virions. The associa...

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Veröffentlicht in:The Journal of infectious diseases 1996-05, Vol.173 (5), p.1062-1071
Hauptverfasser: Giugni, Terrence D., Söderberg, Cecilia, Ham, Debby J., Bautista, Robert M., Hedlund, Kjell-Olof, Moller, Erna, Zaia, John A.
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container_end_page 1071
container_issue 5
container_start_page 1062
container_title The Journal of infectious diseases
container_volume 173
creator Giugni, Terrence D.
Söderberg, Cecilia
Ham, Debby J.
Bautista, Robert M.
Hedlund, Kjell-Olof
Moller, Erna
Zaia, John A.
description The mechanisms of inhibition of cytomegalovirus (CMV) infection by human CD13 (aminopeptidase N)-specific antibodies were studied. These antibodies protect CD13-negative and -positive cells from CMV infection only if incubated with the virus inoculum, suggesting they bind to CMV virions. The association of a CD13-like molecule with virions was further supported by the transfer of CD13 immunoreactivity to the surface of CD13-negative cells upon binding of CMV; the binding of CD13-specific antibodies directly to the surface of CMV virions; and the presence of anti-CD13 immunoreactive bands, including one with mobility similar to that of native cellular CD13 on immunoblots of proteins of purified CMV particles. Importantly, CD13-specific antibodies neutralize CMV in urine of neonates with congenital CMV, indicating that the CD13-like molecule is associated with natural CMV and not acquired in vitro. These studies demonstrate that a CD13-like molecule is associated with CMV particles and may be important in CMV pathogenesis.
doi_str_mv 10.1093/infdis/173.5.1062
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These antibodies protect CD13-negative and -positive cells from CMV infection only if incubated with the virus inoculum, suggesting they bind to CMV virions. The association of a CD13-like molecule with virions was further supported by the transfer of CD13 immunoreactivity to the surface of CD13-negative cells upon binding of CMV; the binding of CD13-specific antibodies directly to the surface of CMV virions; and the presence of anti-CD13 immunoreactive bands, including one with mobility similar to that of native cellular CD13 on immunoblots of proteins of purified CMV particles. Importantly, CD13-specific antibodies neutralize CMV in urine of neonates with congenital CMV, indicating that the CD13-like molecule is associated with natural CMV and not acquired in vitro. 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These antibodies protect CD13-negative and -positive cells from CMV infection only if incubated with the virus inoculum, suggesting they bind to CMV virions. The association of a CD13-like molecule with virions was further supported by the transfer of CD13 immunoreactivity to the surface of CD13-negative cells upon binding of CMV; the binding of CD13-specific antibodies directly to the surface of CMV virions; and the presence of anti-CD13 immunoreactive bands, including one with mobility similar to that of native cellular CD13 on immunoblots of proteins of purified CMV particles. Importantly, CD13-specific antibodies neutralize CMV in urine of neonates with congenital CMV, indicating that the CD13-like molecule is associated with natural CMV and not acquired in vitro. 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These antibodies protect CD13-negative and -positive cells from CMV infection only if incubated with the virus inoculum, suggesting they bind to CMV virions. The association of a CD13-like molecule with virions was further supported by the transfer of CD13 immunoreactivity to the surface of CD13-negative cells upon binding of CMV; the binding of CD13-specific antibodies directly to the surface of CMV virions; and the presence of anti-CD13 immunoreactive bands, including one with mobility similar to that of native cellular CD13 on immunoblots of proteins of purified CMV particles. Importantly, CD13-specific antibodies neutralize CMV in urine of neonates with congenital CMV, indicating that the CD13-like molecule is associated with natural CMV and not acquired in vitro. These studies demonstrate that a CD13-like molecule is associated with CMV particles and may be important in CMV pathogenesis.</abstract><cop>Chicago, IL</cop><pub>The University of Chicago Press</pub><pmid>8627055</pmid><doi>10.1093/infdis/173.5.1062</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record>
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source MEDLINE; SWEPUB Freely available online; JSTOR Archive Collection A-Z Listing; Oxford University Press Journals All Titles (1996-Current)
subjects Animals
Antibodies
Antibodies, Monoclonal - immunology
Antibodies, Viral - immunology
Antibody Specificity
Biological and medical sciences
CD13 Antigens - immunology
Cell Line
Cross Reactions
Cytomegalovirus
Cytomegalovirus - immunology
Cytomegalovirus Infections - congenital
Cytomegalovirus Infections - immunology
Cytomegalovirus Infections - virology
Epitopes - analysis
Female
Fibroblasts
human cytomegalovirus
Human viral diseases
Humans
Infant, Newborn
Infections
Infectious diseases
Isotypes
Major
Major Articles
Medical sciences
Medicin och hälsovetenskap
Mice
Miscellaneous
Molecules
Monoclonal antibodies
Neutralization Tests
NIH 3T3 cells
Viral diseases
Virion - metabolism
Virions
Viruses
title Neutralization of Human Cytomegalovirus by Human CD13-Specific Antibodies
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