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  • Protective and pathologic immune responses against Candida albicans infection

    Author(s)
    B. Ashman, Robert
    Griffith University Author(s)
    Ashman, Robert B.
    Year published
    2008
    Metadata
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    Abstract
    In this study, the low molecular weight lypophilic metabolites of C.albicans and C. dubliniensis strains produced in a synthetic medium with the addition of fetal calf serum were identified using LC/MS and MS/MS technique and quantified. All strains investigated produce a metabolite with a UV spectra maximum at 224 and 279 nm and minimum at 243 nm. Following comparison with ESI, MS/MS spectral data of a reference compound, the metabolite was identified as 3-indoleethanol (tryptophol). The concentration of extracellular tryptophol in the biosynthesis of C. albicans and C. dubliniensis ranged from 2.45 姯mL to 191 姯mL, respectively. ...
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    In this study, the low molecular weight lypophilic metabolites of C.albicans and C. dubliniensis strains produced in a synthetic medium with the addition of fetal calf serum were identified using LC/MS and MS/MS technique and quantified. All strains investigated produce a metabolite with a UV spectra maximum at 224 and 279 nm and minimum at 243 nm. Following comparison with ESI, MS/MS spectral data of a reference compound, the metabolite was identified as 3-indoleethanol (tryptophol). The concentration of extracellular tryptophol in the biosynthesis of C. albicans and C. dubliniensis ranged from 2.45 姯mL to 191 姯mL, respectively. Contrary to previously published data, gliotoxin or gliotoxin-like compounds were not detected, and all investigated C. albicans and C. dubliniensis strains have the same metabolite profile. Cytotoxic effects of tryptophol and 3-indolelactic acid (precursor of tryptophol biosynthesis) were cell-line-dependent. The EC50 of tryptophol ranged between 2 and 7 mM, with the EC50 of 3-indolelactic acid approximately double (between 4 and 8 mM). Tryptophol exhibited cell-type dependent cytotoxicity in relatively high concentrations, with domination of apoptosis.
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    Journal Title
    Frontiers in Bioscience
    Volume
    13
    Publisher URI
    http://www.bioscience.org/
    DOI
    https://doi.org/10.2741/2929
    Copyright Statement
    Self-archiving of the author-manuscript version is not yet supported by this journal. Please refer to the journal link for access to the definitive, published version or contact the author for more information.
    Subject
    Biochemistry and Cell Biology
    Oncology and Carcinogenesis
    Medical Physiology
    Publication URI
    http://hdl.handle.net/10072/26730
    Collection
    • Journal articles

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