Capsule does not block antibody binding to PspA, a surface virulence protein of Streptococcus pneumoniae
Daniels, Calvin C ; Briles, Travis C ; Mirza, Shaper ; Håkansson, Anders P LU
and Briles, David E
(2006)
In Microbial Pathogenesis
40(5).
p.33-228
- Abstract
Of the proteins on the surface of Streptococcus pneumoniae, one of those best able to elicit protection against pneumococcal infection is pneumococcal surface protein A (PspA). Although this protein is attached to the membrane molecule, lipoteichoic acid, which is well beneath the capsule, PspA's ability to inhibit complement deposition and killing by apolactoferrin, suggests that it must have surface exposure. This study provides quantitative data showing that the capsular polysaccharide on types 2 and 3 pneumococci provides little or no masking ability of antibodies to bind PspA. Capsule was even observed to enhance, rather than inhibit the binding of two protective monoclonal antibodies to their epitopes on cell surface PspA. These... (More)
Of the proteins on the surface of Streptococcus pneumoniae, one of those best able to elicit protection against pneumococcal infection is pneumococcal surface protein A (PspA). Although this protein is attached to the membrane molecule, lipoteichoic acid, which is well beneath the capsule, PspA's ability to inhibit complement deposition and killing by apolactoferrin, suggests that it must have surface exposure. This study provides quantitative data showing that the capsular polysaccharide on types 2 and 3 pneumococci provides little or no masking ability of antibodies to bind PspA. Capsule was even observed to enhance, rather than inhibit the binding of two protective monoclonal antibodies to their epitopes on cell surface PspA. These results with antibodies to PspA are in contrast to binding by antibodies to the phosphocholine (PC) epitope of the lipoteichoic and teichoic acids. The binding of antibody to PC was largely, but not completely, blocked by capsular polysaccharide.
(Less)
- author
- Daniels, Calvin C
; Briles, Travis C
; Mirza, Shaper
; Håkansson, Anders P
LU
and Briles, David E
- publishing date
- 2006-05
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Antibodies, Bacterial, Bacterial Capsules, Bacterial Proteins, Fluorescent Antibody Technique, Indirect, Mutation, Phosphorylcholine, Pneumococcal Infections, Streptococcus pneumoniae, Virulence
- in
- Microbial Pathogenesis
- volume
- 40
- issue
- 5
- pages
- 6 pages
- publisher
- Academic Press
- external identifiers
-
- pmid:16540281
- scopus:33646251599
- ISSN
- 0882-4010
- DOI
- 10.1016/j.micpath.2006.01.007
- language
- English
- LU publication?
- no
- id
- b75378f8-5428-4899-a97f-2acf59c562bb
- date added to LUP
- 2016-05-21 10:51:28
- date last changed
- 2024-05-31 04:40:33
@article{b75378f8-5428-4899-a97f-2acf59c562bb,
abstract = {{<p>Of the proteins on the surface of Streptococcus pneumoniae, one of those best able to elicit protection against pneumococcal infection is pneumococcal surface protein A (PspA). Although this protein is attached to the membrane molecule, lipoteichoic acid, which is well beneath the capsule, PspA's ability to inhibit complement deposition and killing by apolactoferrin, suggests that it must have surface exposure. This study provides quantitative data showing that the capsular polysaccharide on types 2 and 3 pneumococci provides little or no masking ability of antibodies to bind PspA. Capsule was even observed to enhance, rather than inhibit the binding of two protective monoclonal antibodies to their epitopes on cell surface PspA. These results with antibodies to PspA are in contrast to binding by antibodies to the phosphocholine (PC) epitope of the lipoteichoic and teichoic acids. The binding of antibody to PC was largely, but not completely, blocked by capsular polysaccharide.</p>}},
author = {{Daniels, Calvin C and Briles, Travis C and Mirza, Shaper and Håkansson, Anders P and Briles, David E}},
issn = {{0882-4010}},
keywords = {{Antibodies, Bacterial; Bacterial Capsules; Bacterial Proteins; Fluorescent Antibody Technique, Indirect; Mutation; Phosphorylcholine; Pneumococcal Infections; Streptococcus pneumoniae; Virulence}},
language = {{eng}},
number = {{5}},
pages = {{33--228}},
publisher = {{Academic Press}},
series = {{Microbial Pathogenesis}},
title = {{Capsule does not block antibody binding to PspA, a surface virulence protein of Streptococcus pneumoniae}},
url = {{http://dx.doi.org/10.1016/j.micpath.2006.01.007}},
doi = {{10.1016/j.micpath.2006.01.007}},
volume = {{40}},
year = {{2006}},
}