Phylogeny and distribution of an unknown Treponema sp. associated with porcine colitis by using in situ hybridization and laser capture microdissection (LCM)

Lars Mølbak, Kirstine Klitgaard Schou, Tim Kåre Jensen, M. Fossi, Mette Boye

    Research output: Contribution to conferenceConference abstract for conferenceResearch

    Abstract

    Helical-shaped bacteria resembling Spirochaetes commonly are present in the gastrointestinal tract of animals and humans. Culturing of Spirochaetes is in general fastidious and not always successful. Here, a new DNA isolation approach for prokaryotic cells in formalin-fixed paraffin-embedded tissue samples is applied for the identification of an unknown Spirochaete. The tissue samples from colon were obtained from a previous study (1). Sectioning, in situ hybridization, LCM, DNA extraction, PCR reaction and sequencing were done according to Klitgaard et al. (2). The unknown invasive Spirochaetes species was recognized in pigs by using fluorescent in situ hybridization, followed by laser capture microdissection (LCM) of the targeted cells from the colonic mucosa. Direct 16S rRNA gene PCR was performed from the dissected micro-colonies. A phylogenetic analysis clustered the 16S rRNA gene in the Treponema genus group. The closest related Treponema type strain was T. bryantii (
    Original languageEnglish
    Publication date2006
    Publication statusPublished - 2006
    Event11th International Symposium on Microbial Ecology - Vienna, Austria
    Duration: 20 Aug 200625 Aug 2006
    Conference number: 11
    http://www.kenes.com/isme/

    Conference

    Conference11th International Symposium on Microbial Ecology
    Number11
    CountryAustria
    CityVienna
    Period20/08/200625/08/2006
    Internet address

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