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https://hdl.handle.net/2440/23899
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Type: | Journal article |
Title: | Cell-free immune reactions in insects |
Author: | Rahman, M. Ma, G. Roberts, H. Schmidt, O. |
Citation: | Journal of Insect Physiology, 2006; 52(7):754-762 |
Publisher: | Pergamon-Elsevier Science Ltd |
Issue Date: | 2006 |
ISSN: | 0022-1910 1879-1611 |
Statement of Responsibility: | M. Mahbubur Rahman, Gang Ma, Harry L.S. Roberts and Otto Schmidt |
Abstract: | Insects, like many other multicellular organisms, are able to recognise and inactivate potential pathogens and toxins in the absence of cells. Here we show that the recognition and inactivation of lipopolysaccharides (LPS) and bacteria is mediated by lipophorin particles, which are the lipid carrier in insects. In immune-induced insects sub-populations of lipophorin particles are associated with pattern recognition proteins and regulatory proteins that activate prophenoloxidase. Moreover, interactions with lectins result in the assembly of lipophorin particles into cage-like coagulation products, effectively protecting the surrounding tissues and cells from the potentially damaging effects of pathogens and phenoloxidase products. The existence of cell-free defence reactions implies that immune signals exist upstream of cell-bound receptors. |
Keywords: | Lipopolysaccharide prophenoloxidase lipophorin coagulation pattern recognition proteins |
DOI: | 10.1016/j.jinsphys.2006.04.003 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/231/description#description |
Published version: | http://dx.doi.org/10.1016/j.jinsphys.2006.04.003 |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 2 |
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