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  • Title: A fucose-containing epitope is shared by keyhole limpet haemocyanin and Schistosoma mansoni glycosphingolipids.
    Author: Wuhrer M, Dennis RD, Doenhoff MJ, Geyer R.
    Journal: Mol Biochem Parasitol; 2000 Oct; 110(2):237-46. PubMed ID: 11071279.
    Abstract:
    The glycolipids of Schistosoma mansoni adult worms, cercariae and eggs are recognised by schistosome infection serum and the monoclonal antibody M2D3H. The haemocyanin of the keyhole limpet, Megathura crenulata, is known to be immunoreactive to schistosomal infection sera and is, therefore, under investigation for the diagnosis of and vaccination against schistosomiasis. By dot-blot, inhibition-ELISA and inhibition-HPTLC immunostaining we have demonstrated that the M2D3H epitope is shared by both S. mansoni glycolipids and keyhole limpet haemocyanin (KLH). Analogously to the established epitopic importance of fucose to the immunorecognition of S. mansoni glycolipids, we have similarly defined the significance of the fucose residue(s) for the immunoreactivity between KLH and schistosomal infection serum and the monoclonal antibody M2D3H. Fucose was specifically removed from KLH by partial hydrolysis, monitored by ultrafiltration and carbohydrate component analysis. On removal of the fucose residue(s) the serological and immunological reactivity of KLH was greatly diminished, which implied that the fucose-containing M2D3H antigenic determinant was common to both S. mansoni glycolipids and KLH.
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