Journal
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
Volume 33, Issue 11, Pages 1151-1155Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dci.2009.04.005
Keywords
Phagocytosis; Specificity; Immune priming; Invertebrate; Bacteria; Immune defence; Innate immunity; Adaptive immunity
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Funding
- Swiss National Science Foundation [3100A0-112992]
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Specificity and memory are the hallmarks of the adaptive immune system of vertebrates. However, phenomena of specificity upon priming of immunity have recently been demonstrated also in invertebrates, which rely exclusively on innate immune defence. It has been suggested that phagocytosis might represent a core candidate for such specificity in invertebrates. We here developed in vitro phagocytosis measurements for different bacteria in the woodlouse Porcellio scaber (Crustacea: Isopoda). After immune priming with heat-killed bacteria, hemocytes showed increased phagocytosis of a previously encountered bacterial strain compared to other bacteria. These data support the role of phagocytosis in invertebrate immunological specificity and Suggest a high degree of specificity that even enables to differentiate between strains of the same bacterial species. (C) 2009 Elsevier Ltd. All rights reserved.
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