Abstract
We have provided an account of the progress we and others have made over the last decade on the structural characterization of glycans from parasitic helminths. We hope to have illustrated a few principles and patterns governing helminth glycosylation, as well as the experimental approaches adopted and their associated strengths and limitations. Schistosomes remain the best studied systems but are still punctuated with gaps of knowledge. An important theme developed here is the regulated developmental stagespecific expression of various glycan epitopes and their interplay with immediate host environments for successful parasitism. It is anticipated that more novel or unusual structures will continuously be uncovered in the future and that despite many difficulties, current analytical techniques should be well up to meet the challenge in at least elucidating the major or key glycoconjugates from each of the diverse range of worms. The bottle neck will in fact reside in finding suitable experimental models to test their putative immunobiological functions from which the intricate host-parasite interactions can be delineated and rational vaccine design be achieved. The glycobiology of parasitic helminths is an area waiting to be more fully explored and the rewards should be sweet.
Article FootNote
The abbreviations used are: CAA, circulating anodic antigen; CCA, circulating cathodic antigen; Cer, ceramide; Con A, con-canavalin A; ES, excretory-secretory; GSL, glycosphingolipids; HexNAc, GlcNAc or GalNAc; lacNAc, N-acetyl-Iactosamine; lacdiNAc, N,N’-diacetyl-Iactosediamin; LexLewis X; mAb, monoclonal antibody.
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Khoo, KH., Dell, A. (2001). Glycoconjugates from Parasitic Helminths: Structure Diversity and Immunobiological Implications. In: Wu, A.M. (eds) The Molecular Immunology of Complex Carbohydrates —2. Advances in Experimental Medicine and Biology, vol 491. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-1267-7_14
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