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2016 ; 46
(1
): 2-9
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Surface interactions between two of the main periodontal pathogens: Porphyromonas
gingivalis and Tannerella forsythia
#MMPMID26937289
Zhu W
; Lee SW
J Periodontal Implant Sci
2016[Feb]; 46
(1
): 2-9
PMID26937289
show ga
PURPOSE: Porphyromonas gingivalis and Tannerella forsythia have been implicated
as the major etiologic agents of periodontal disease. These two bacteria are
frequently isolated together from the periodontal lesion, and it has been
suggested that their interaction may increase each one's virulence potential. The
purpose of this study was to identify proteins on the surface of these organisms
that are involved in interbacterial binding. METHODS: Biotin labeling of surface
proteins of P. gingivalis and T. forsythia and liquid chromatography-tandem mass
spectrometry (LC-MS/MS) analysis was performed to identify surface proteins
involved in the coaggregating activity between P. gingivalis and T. forsythia.
RESULTS: It was found that three major T. forsythia proteins sized 161, 100, and
62 kDa were involved in binding to P. gingivalis, and P. gingivalis proteins
sized 35, 32, and 26 kDa were involved in binding to T. forsythia cells.
CONCLUSIONS: LC-MS/MS analysis identified one T. forsythia surface protein
(TonB-linked outer membrane protein) involved in interbacterial binding to P.
gingivalis. However, the nature of other T. forsythia and P. gingivalis surface
proteins identified by biotin labeling could not be determined. Further analysis
of these proteins will help elucidate the molecular mechanisms that mediate
coaggregation between P. gingivalis and T. forsythia.