Journal article

Characterization of T cell responses to the RgpA-Kgp proteinase-adhesin complexes of Porphyromonas gingivalis in BALB/c mice

Vivian Tam, Neil M O'Brien-Simpson, Rishi D Pathirana, Leanne T Frazer, Eric C Reynolds

JOURNAL OF IMMUNOLOGY | AMER ASSOC IMMUNOLOGISTS | Published : 2008

Abstract

Porphyromonas gingivalis is a Gram-negative bacterium strongly associated with chronic periodontitis, an inflammatory oral disease. A major virulence factor common to all characterized strains of P. gingivalis is the RgpA-Kgp proteinase-adhesin complexes (RgpA-Kgp complexes). In this study, we investigated T cell proliferative and cytokine responses to the RgpA-Kgp complexes and identified T cell epitopes in BALB/c mice utilizing Pepscan methodology. T cell proliferative responses were found to be predominantly directed toward the proteinase catalytic domains. Eleven T cell epitopes were identified using RgpA-Kgp-primed lymph node T cells (IL-4 dominant) and 21 using an RgpA-Kgp-specific T c..

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