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  • Functional differences between M cells and enterocytes in sampling luminal antigens

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    55354_1.pdf (772.3Kb)
    Author(s)
    Kyd, Jennelle M
    Cripps, Allan W
    Griffith University Author(s)
    Cripps, Allan W.
    Year published
    2008
    Metadata
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    Abstract
    Oral delivery of agents such as vaccines offers a number of significant advantages over parenteral routes, yet only a small number of oral vaccines are routinely available today. The small intestine contains lymphoid aggregates that are overlaid by M cells. These aggregates are part of the gut-associated lymphoid tissues and are important for determining host responses to particulate antigenic material within the small intestine. Differentiating the receptor requirements for M cell uptake and transcytosis of bacterial antigen from the intestine has progressed although the specific signalling mechanisms that initiate antigen ...
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    Oral delivery of agents such as vaccines offers a number of significant advantages over parenteral routes, yet only a small number of oral vaccines are routinely available today. The small intestine contains lymphoid aggregates that are overlaid by M cells. These aggregates are part of the gut-associated lymphoid tissues and are important for determining host responses to particulate antigenic material within the small intestine. Differentiating the receptor requirements for M cell uptake and transcytosis of bacterial antigen from the intestine has progressed although the specific signalling mechanisms that initiate antigen uptake and specifically target antigen to these cells is still relatively unknown. Microbial pathogen-associated molecular patterns (PAMPs) are recognised by the innate immune system through pattern recognition receptors (PRRs) either through direct receptor-bacterial ligand or endogenous adaptor-bacterial molecule interactions. PRRs on the surface of M cells that have been identified as important in antigen transcytosis include toll-like receptor-4, platelet-activating factor receptor and a5߱ integrin. A number of these PRRs are also found on neighbouring enterocytes and therefore the pathways signalled by receptor-ligand binding may differentially trigger different transduction pathways. Elucidation of these signalling pathways may assist in the design of effective oral vaccines that target the gut-associated lymphoid tissue.
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    Journal Title
    Vaccine
    Volume
    26
    Issue
    49
    DOI
    https://doi.org/10.1016/j.vaccine.2008.09.061
    Copyright Statement
    © 2008 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Biological sciences
    Agricultural, veterinary and food sciences
    Biomedical and clinical sciences
    Immunology not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/23279
    Collection
    • Journal articles

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