Fachbereich Veterinärmedizin



    Stage-dependent transcriptional changes and characterization of paramyosin of the bovine lungworm Dictyocaulus viviparus (2009)

    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Strube, C
    Buschbaum, S
    von Samson-Himmelstjerna, G (WE 13)
    Schnieder, T
    Parasitology International; 58(4) — S. 334–340
    ISSN: 1383-5769
    DOI: 10.1016/j.parint.2009.07.003
    Pubmed: 19604498
    Institut für Parasitologie und Tropenveterinärmedizin

    Robert-von-Ostertag-Str. 7-13
    Gebäude 35, 22, 23
    14163 Berlin
    Tel.+49 30 838 62310 Fax.+49 30 838 62323

    Abstract / Zusammenfassung

    The bovine lungworm Dictyocaulus viviparus is of major economic importance in cattle farming in the temperate zones. The invertebrate protein paramyosin is one of the main components of muscle thick filaments but can also exhibit immunomodulatory functions. It represents a promising vaccine candidate in parasitic helminths. In this study, D. viviparus paramyosin (DvPmy) was characterized on the transcriptional as well as genomic level. The identified genomic sequence comprises 19 introns compared to only 10 introns in the Caenorhabditis elegans orthologue. Quantitative real time PCR transcriptional analysis revealed paramyosin transcription throughout the whole parasite's life cycle with the highest transcription rate in the agile moving first-stage larvae and the lowest in motionless hypobiosis induced third stage larvae. Recombinantly expressed DvPmy was found to bind collagen and IgG. Thereby the present study is the first showing that nematode paramyosin has the capability for immunomodulation and thus may be involved in host immune defence.