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Article

Immunoreactivity of Five Monoclonal Antibodies against the 37-Kilodalton Common Cell Wall Protein (PsaA) ofStreptococcus pneumoniae

Jennifer Crook, Jean A. Tharpe, Scott E. Johnson, Derrick B. Williams, Annie R. Stinson, Richard R. Facklam, Edwin W. Ades, George M. Carlone, Jacquelyn S. Sampson
Jennifer Crook
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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Jean A. Tharpe
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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Scott E. Johnson
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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Derrick B. Williams
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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Annie R. Stinson
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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Richard R. Facklam
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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Edwin W. Ades
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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George M. Carlone
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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Jacquelyn S. Sampson
Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
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DOI: 10.1128/CDLI.5.2.205-210.1998
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ABSTRACT

Five monoclonal antibodies (MAbs) were produced against theStreptococcus pneumoniae pneumococcal surface adhesin A (PsaA) 37-kDa common cell wall protein. These antibodies were used in a dot immunoblot and Western blot study of clinical isolates ofS. pneumoniae to detect the presence of the protein. By both assays, the MAbs reacted with clinical isolates representing the 23 type-specific serotypes present in the licensed pneumococcal polysaccharide vaccine. Western blot analysis confirmed the presence of a protein migrating in the gel with a molecular mass of 37 kDa. An extension of the study by using dot immunoblot analysis that included an analysis of the 90 serotypes of S. pneumoniae showed that all five MAbs reacted with 89 of the 90 serotypes tested. MAb 1B6, the exception, did not react with S. pneumoniae serotype 16F. Dot immunoblot analysis of the MAbs with Enterococcus faecalis and viridans streptococci showed varied reactivity patterns, depending on the species. The MAbs against the 37-kDa antigen did not react with Escherichia coli, respiratory pathogens, or nonpathogens representing 22 genera and 29 species of bacteria. All five MAbs also reacted with five multidrug-resistant strains ofS. pneumoniae. In summary, these MAbs may be useful for detection of pneumococcal antigen and may lead to the development of diagnostic assays for pneumococcal disease.

  • Copyright © 1998 American Society for Microbiology
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Immunoreactivity of Five Monoclonal Antibodies against the 37-Kilodalton Common Cell Wall Protein (PsaA) ofStreptococcus pneumoniae
Jennifer Crook, Jean A. Tharpe, Scott E. Johnson, Derrick B. Williams, Annie R. Stinson, Richard R. Facklam, Edwin W. Ades, George M. Carlone, Jacquelyn S. Sampson
Clinical and Diagnostic Laboratory Immunology Mar 1998, 5 (2) 205-210; DOI: 10.1128/CDLI.5.2.205-210.1998

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Immunoreactivity of Five Monoclonal Antibodies against the 37-Kilodalton Common Cell Wall Protein (PsaA) ofStreptococcus pneumoniae
Jennifer Crook, Jean A. Tharpe, Scott E. Johnson, Derrick B. Williams, Annie R. Stinson, Richard R. Facklam, Edwin W. Ades, George M. Carlone, Jacquelyn S. Sampson
Clinical and Diagnostic Laboratory Immunology Mar 1998, 5 (2) 205-210; DOI: 10.1128/CDLI.5.2.205-210.1998
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