Mycoses · 2018
Detection of Trichophyton rubrum and Trichophyton interdigitale in onychomycosis using monoclonal antibodies against Sub6 (Tri r 2).
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Méhul Bruno, de Coi Niccolo, Grundt Philippe, Genette Alexandre, Voegel Johannes J, Monod Michel
Аннотация
BACKGROUND: Onychomycosis is the most prevalent nail disease and is mainly caused by two dermatophyte species Trichophyton rubrum and Trichophyton interdigitale with a frequency in the range of 80% and 20%, respectively. The secreted protease Sub6 of the subtilisin family, which was never detected in vitro growth conditions, was found to be a robust marker of onychomycosis.
OBJECTIVE: The aim of this work was to detect tinea unguium using anti-Sub6 monoclonal antibodies in proteins extracted from clinical nail samples.
METHODS: We produced monoclonal antibodies in mice using recombinant Sub6 as an antigen. Selected monoclonal antibodies were tested by Western blot analysis and ELISA on protein extracts from onychomycosis samples.
RESULTS: Several monoclonal antibodies used to quantify Sub6 in proteins extracted from clinical nail samples were produced and characterised. We showed that these antibodies were very specific and allowed the detection of T. rubrum and T. interdigitale in onychomycosis. Sub6 was detected in clinical samples infected by T. rubrum and not detected in nails with trauma and other diseases.
CONCLUSION: Anti-Sub6 monoclonal antibodies could be useful for a rapid diagnosis of tinea unguium and/or therapeutic survey of dermatophyte in onychomycosis by ELISA or an immunochromatography device such as a strip test.
OBJECTIVE: The aim of this work was to detect tinea unguium using anti-Sub6 monoclonal antibodies in proteins extracted from clinical nail samples.
METHODS: We produced monoclonal antibodies in mice using recombinant Sub6 as an antigen. Selected monoclonal antibodies were tested by Western blot analysis and ELISA on protein extracts from onychomycosis samples.
RESULTS: Several monoclonal antibodies used to quantify Sub6 in proteins extracted from clinical nail samples were produced and characterised. We showed that these antibodies were very specific and allowed the detection of T. rubrum and T. interdigitale in onychomycosis. Sub6 was detected in clinical samples infected by T. rubrum and not detected in nails with trauma and other diseases.
CONCLUSION: Anti-Sub6 monoclonal antibodies could be useful for a rapid diagnosis of tinea unguium and/or therapeutic survey of dermatophyte in onychomycosis by ELISA or an immunochromatography device such as a strip test.