Identification of photolabile outer membrane proteins of Porphyromonas gingivalis

M Bhatti; S P Nair; A J Macrobert; B Henderson; P Shepherd; J Cridland; M Wilson

doi:10.1007/s002840010268

Identification of photolabile outer membrane proteins of Porphyromonas gingivalis

M Bhatti, S P Nair, A J Macrobert, B Henderson, P Shepherd, J Cridland, M Wilson

King's College London

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

As the prevalence of antibiotic-resistant strains of bacteria increases, novel ways of treating infections need to be developed. This is particularly pertinent with respect to the periodontal diseases-the most common chronic bacterial infections of man, The use of a photosensitizer in combination with red light has been demonstrated to be effective in killing several human pathogens, including the oral bacterium, Porphyromonas gingivalis, a major pathogen in periodontitis. Killing was associated with alterations in the molecular masses of several outer membrane and plasma membrane proteins and these may be therapeutic targets for photodynamic therapy and other antimicrobial approaches. To identify these photolabile proteins, we have used a panel of monoclonal antibodies raised to whole P. gingivalis. A number of the antibodies recognized various photolabile proteins. Using a combination of Western blotting and protein sequencing the predominant photolabile proteins in P. gingivalis have been identified as the major secreted/cell surface proteases - Lys and Arg gingipain.

Original language	English
Pages (from-to)	96 - 99
Number of pages	4
Journal	CURRENT MICROBIOLOGY
Volume	43
Issue number	2
DOIs	https://doi.org/10.1007/s002840010268
Publication status	Published - 2001

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abstract = "As the prevalence of antibiotic-resistant strains of bacteria increases, novel ways of treating infections need to be developed. This is particularly pertinent with respect to the periodontal diseases-the most common chronic bacterial infections of man, The use of a photosensitizer in combination with red light has been demonstrated to be effective in killing several human pathogens, including the oral bacterium, Porphyromonas gingivalis, a major pathogen in periodontitis. Killing was associated with alterations in the molecular masses of several outer membrane and plasma membrane proteins and these may be therapeutic targets for photodynamic therapy and other antimicrobial approaches. To identify these photolabile proteins, we have used a panel of monoclonal antibodies raised to whole P. gingivalis. A number of the antibodies recognized various photolabile proteins. Using a combination of Western blotting and protein sequencing the predominant photolabile proteins in P. gingivalis have been identified as the major secreted/cell surface proteases - Lys and Arg gingipain.",

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AU - Bhatti, M

AU - Nair, S P

AU - Macrobert, A J

AU - Henderson, B

AU - Shepherd, P

AU - Cridland, J

AU - Wilson, M

PY - 2001

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Identification of photolabile outer membrane proteins of Porphyromonas gingivalis

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