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Identification of protein vaccine candidates from Helicobacter pylori using a preparative two-dimensional electrophoretic procedure and mass spectrometry

Nilsson, Carol LU ; Larsson, T; Gustafsson, E; Karlsson, K A and Davidsson, P (2000) In Analytical Chemistry 72(9). p.53-2148
Abstract

Helicobacter pylori is an important human gastric pathogen for which the entire genome sequence is known. This microorganism displays a uniquely complex pattern of binding to complex carbohydrates presented on host mucosal surfaces and other tissues, through adhesion molecules (adhesins) on the microbial cell surface. Adhesins and other membrane-associated proteins are important targets for vaccine development. The identification and characterization of cell-surface proteins expressed by H. pylori is a prerequisite for the development of vaccines designed to interfere with bacterial colonization of host tissues. However, identification of membrane proteins is difficult using a traditional proteomics approach employing 2D-PAGE. We have... (More)

Helicobacter pylori is an important human gastric pathogen for which the entire genome sequence is known. This microorganism displays a uniquely complex pattern of binding to complex carbohydrates presented on host mucosal surfaces and other tissues, through adhesion molecules (adhesins) on the microbial cell surface. Adhesins and other membrane-associated proteins are important targets for vaccine development. The identification and characterization of cell-surface proteins expressed by H. pylori is a prerequisite for the development of vaccines designed to interfere with bacterial colonization of host tissues. However, identification of membrane proteins is difficult using a traditional proteomics approach employing 2D-PAGE. We have used a novel approach in the identification of microbial proteins that employs a rapid preparative two-dimensional electrophoretic separation followed by mass spectrometry and database searches. No pre-enrichment of bacterial membranes was required. The entire process, from sample preparation to protein identification, can be completed in less than 18 hours, and the presence of proteins can be monitored after both the first- and second-dimensional separations using mass spectrometry. We were able to identify 40 proteins from a detergent-solubilized H. pylori preparation; over one-third of these were membrane or membrane-associated proteins. A functionally characterized low-abundance membrane protein, the Leb-binding adhesin, was found in this group. The use of this rapid 2D electrophoretic separation in proteomic studies of H. pylori is expected to speed up the identification of expressed virulence proteins and vaccine targets in this and other microbial pathogens.

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author
publishing date
type
Contribution to journal
publication status
published
keywords
Amino Acid Sequence, Bacterial Proteins, Bacterial Vaccines, Databases, Factual, Electrophoresis, Polyacrylamide Gel, Helicobacter pylori, Mass Spectrometry, Molecular Sequence Data, Peptide Library, Journal Article, Research Support, Non-U.S. Gov't
in
Analytical Chemistry
volume
72
issue
9
pages
6 pages
publisher
The American Chemical Society
external identifiers
  • scopus:0034192569
ISSN
0003-2700
DOI
10.1021/ac9912754
language
English
LU publication?
no
id
5bedcc1d-e037-4aa7-b1fe-51e3979c592b
date added to LUP
2017-05-16 10:51:02
date last changed
2017-07-02 05:02:17
@article{5bedcc1d-e037-4aa7-b1fe-51e3979c592b,
  abstract     = {<p>Helicobacter pylori is an important human gastric pathogen for which the entire genome sequence is known. This microorganism displays a uniquely complex pattern of binding to complex carbohydrates presented on host mucosal surfaces and other tissues, through adhesion molecules (adhesins) on the microbial cell surface. Adhesins and other membrane-associated proteins are important targets for vaccine development. The identification and characterization of cell-surface proteins expressed by H. pylori is a prerequisite for the development of vaccines designed to interfere with bacterial colonization of host tissues. However, identification of membrane proteins is difficult using a traditional proteomics approach employing 2D-PAGE. We have used a novel approach in the identification of microbial proteins that employs a rapid preparative two-dimensional electrophoretic separation followed by mass spectrometry and database searches. No pre-enrichment of bacterial membranes was required. The entire process, from sample preparation to protein identification, can be completed in less than 18 hours, and the presence of proteins can be monitored after both the first- and second-dimensional separations using mass spectrometry. We were able to identify 40 proteins from a detergent-solubilized H. pylori preparation; over one-third of these were membrane or membrane-associated proteins. A functionally characterized low-abundance membrane protein, the Leb-binding adhesin, was found in this group. The use of this rapid 2D electrophoretic separation in proteomic studies of H. pylori is expected to speed up the identification of expressed virulence proteins and vaccine targets in this and other microbial pathogens.</p>},
  author       = {Nilsson, Carol and Larsson, T and Gustafsson, E and Karlsson, K A and Davidsson, P},
  issn         = {0003-2700},
  keyword      = {Amino Acid Sequence,Bacterial Proteins,Bacterial Vaccines,Databases, Factual,Electrophoresis, Polyacrylamide Gel,Helicobacter pylori,Mass Spectrometry,Molecular Sequence Data,Peptide Library,Journal Article,Research Support, Non-U.S. Gov't},
  language     = {eng},
  month        = {05},
  number       = {9},
  pages        = {53--2148},
  publisher    = {The American Chemical Society},
  series       = {Analytical Chemistry},
  title        = {Identification of protein vaccine candidates from Helicobacter pylori using a preparative two-dimensional electrophoretic procedure and mass spectrometry},
  url          = {http://dx.doi.org/10.1021/ac9912754},
  volume       = {72},
  year         = {2000},
}