Inhibition of hemagglutinating activity by monoclonal antibody against Porphyromonas gingivalis 40-kDa outer membrane protein

Hiroaki Tagawa, Michiko Kiyama-Kishikawa, Sheng Yang Lee, Yoshimitsu Abiko

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Periodontitis is a chronic inflammatory disease of periodontal tissues that results in alveolar bone loss, and Porphyromonas gingivalis, which has a high hemagglutinating activity, has been implicated as an important pathogen in the development of periodontitis. This bacterium has a high hemagglutinating activity. We previously succeeded in gene cloning the 40-kDa outer membrane protein (OMP) from P. gingivalis 381. Although recombinant (r) 40-kDa OMP itself did not show hemagglutinating activity, its polymeric form, constructed with a cross-linking reagent, significantly expressed that activity. Furthermore, an affinity-purified antibody against r40-kDa OMP inhibited the hemagglutinating activity of P. gingivalis vesicles. In the present study, in order to clarify the pathological role of 40-kDa OMP and develop passive immunotherapy, we examined the inhibitory effect of monoclonal antibodies (MAbs) against r40-kDa OMP on the hemagglutinating activity of P. gingivalis vesicles. The MAbs reacted with r40-kDa OMP, the outer membrane fraction, vesicles, and P. gingivalis cell extracts, and significantly inhibited the hemagglutinating activities of the polymeric r40-kDa OMP as well as of P. gingivalis vesicles. These findings suggest that MAbs against 40-kDa OMP may be useful for the development of passive immunotherapy and for assessing treatment for periodontal diseases caused by P. gingivalis infection.

Original languageEnglish
Pages (from-to)183-186
Number of pages4
JournalHybridoma and Hybridomics
Volume23
Issue number3
DOIs
Publication statusPublished - Jun 2004

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Porphyromonas gingivalis
Membrane Proteins
Monoclonal Antibodies
Passive Immunization
Periodontitis
Cross-Linking Reagents
Alveolar Bone Loss
Antibody Affinity
Periodontal Diseases
Cell Extracts
Organism Cloning
Chronic Disease
Bacteria
Membranes
Infection

ASJC Scopus subject areas

  • Genetics
  • Immunology

Cite this

Inhibition of hemagglutinating activity by monoclonal antibody against Porphyromonas gingivalis 40-kDa outer membrane protein. / Tagawa, Hiroaki; Kiyama-Kishikawa, Michiko; Lee, Sheng Yang; Abiko, Yoshimitsu.

In: Hybridoma and Hybridomics, Vol. 23, No. 3, 06.2004, p. 183-186.

Research output: Contribution to journalArticle

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