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Cellular immunity of Drosophila willistoni reveals novel complexity in insect anti-parasitoid defense
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- Cinege, Gyöngyi (author)
- Innate Immunity Group, Institute of Genetics, HUN-REN Biological Research Centre, Szeged, Hungary
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- Fodor, Kinga (author)
- Innate Immunity Group, Institute of Genetics, HUN-REN Biological Research Centre, Szeged, Hungary
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- Magyar, Lilla B. (author)
- Innate Immunity Group, Institute of Genetics, HUN-REN Biological Research Centre, Szeged, Hungary; Doctoral School of Biology, University of Szeged, Szeged, Hungary
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- (creator_code:org_t)
- MDPI, 2024
- 2024
- English.
- In: Cells. - : MDPI. - 2073-4409. ; 13:7
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Coevolution of hosts and their parasites has shaped heterogeneity of effector hemocyte types, providing immune defense reactions with variable effectiveness. In this work, we characterize hemocytes of Drosophila willistoni, a species that has evolved a cellular immune system with extensive variation and a high degree of plasticity. Monoclonal antibodies were raised and used in indirect immunofluorescence experiments to characterize hemocyte subpopulations, follow their functional features and differentiation. Pagocytosis and parasitization assays were used to determine the functional characteristics of hemocyte types. Samples were visualized using confocal and epifluorescence microscopy. We identified a new multinucleated giant hemocyte (MGH) type, which differentiates in the course of the cellular immune response to parasitoids. These cells differentiate in the circulation through nuclear division and cell fusion, and can also be derived from the central hematopoietic organ, the lymph gland. They have a binary function as they take up bacteria by phagocytosis and are involved in the encapsulation and elimination of the parasitoid. Here, we show that, in response to large foreign particles, such as parasitoids, MGHs differentiate, have a binary function and contribute to a highly effective cellular immune response, similar to the foreign body giant cells of vertebrates.
Subject headings
- NATURVETENSKAP -- Biologi -- Immunologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Immunology (hsv//eng)
Keyword
- Drosophila willistoni
- encapsulation
- giant cell
- hemocyte
- immune cell
- immune response
- multinucleated
- parasitoid wasp
- phagocytosis
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- art (subject category)
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- Umeå University
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