Antibodies produced against a fragment of filamentous haemagglutinin (FHA) of Bordetella pertussis are able to inhibit hemagglutination induced by the whole adhesin

被引:5
作者
Colombi, D
Horton, DSPQ
Oliveira, MLS
Sakauchi, MA
Ho, PL
机构
[1] Inst Butantan, Ctr Biotecnol, BR-05509900 Sao Paulo, Brazil
[2] Inst Butantan, Secao Vacinas Aerobicas, BR-05503900 Sao Paulo, Brazil
[3] Univ Sao Paulo, Inst Quim, Sao Paulo, Brazil
[4] Univ Sao Paulo, Inst Biociencias, Sao Paulo, Brazil
基金
巴西圣保罗研究基金会;
关键词
Bordetella pertussis; FHA; heparin-binding domain; acellular vaccines;
D O I
10.1016/j.femsle.2004.09.009
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Filamentous hemagglutinin adhesin (FHA) is important for the adherence of Bordetella pertussis to the host ciliary epithelial cells of the respiratory tract. Several binding domains have been characterized in the FHA molecule. For example, an putative heparin binding domain of FHA was previously located in the FHA(442-863) region. In this work, the HEP fragment, corresponding to FHA(430-873) was amplified by PCR and subcloned in an Escherichia coli expression plasmid. Purified recombinant HEP was used to produce polyclonal antibodies in mice that were able to recognize HEP and FHA in ELISA and in Western-blot assays. Although recombinant HEP displayed low ability to bind heparin and no hemagglutination activity, the anti-HEP antibodies were able to inhibit FHA mediated hemagglutination activity in goose erythrocytes. These results indicate that other amino acid residues that are not present in the FHA(430-873) fragment may be necessary for heparin binding. Further studies to address the immunogenic response against HEP are also required. (C) 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:41 / 47
页数:7
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