Parasitoid wasp venom vesicles (venosomes) enter Drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway

Venosomes are extracellular vesicles found in the venom of Leptopilina endoparasitoids wasps, which transport and target virulence factors to impair the parasitoid egg encapsulation by the lamellocytes of their Drosophila melanogaster host larva. Using the co-immunolocalization of fluorescent L. bou...

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Autores principales: Bin Wan, Marylène Poirié, Jean-Luc Gatti
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Lenguaje:EN
Publicado: Taylor & Francis Group 2020
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Acceso en línea:https://doaj.org/article/8abb264d027f459fa9ed5ba8e4e9106c
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spelling oai:doaj.org-article:8abb264d027f459fa9ed5ba8e4e9106c2021-11-17T14:21:59ZParasitoid wasp venom vesicles (venosomes) enter Drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway2150-55942150-560810.1080/21505594.2020.1838116https://doaj.org/article/8abb264d027f459fa9ed5ba8e4e9106c2020-12-01T00:00:00Zhttp://dx.doi.org/10.1080/21505594.2020.1838116https://doaj.org/toc/2150-5594https://doaj.org/toc/2150-5608Venosomes are extracellular vesicles found in the venom of Leptopilina endoparasitoids wasps, which transport and target virulence factors to impair the parasitoid egg encapsulation by the lamellocytes of their Drosophila melanogaster host larva. Using the co-immunolocalization of fluorescent L. boulardi venosomes and one of the putative-transported virulence factors, LbGAP, with known markers of cellular endocytosis, we show that venosomes endocytosis by lamellocytes is not a process dependent on clathrin or macropinocytosis and internalization seems to bypass the early endosomal compartment Rab5. After internalization, LbGAP colocalizes strongly with flotillin-1 and the GPI-anchored protein Atilla/L1 (a lamellocyte surface marker) suggesting that entry occurs via a flotillin/lipid raft-dependent pathway. Once internalized, venosomes reach all intracellular compartments, including late and recycling endosomes, lysosomes, and the endoplasmic reticulum network. Venosomes therefore enter their target cells by a specific mechanism and the virulence factors are widely distributed in the lamellocytes’ compartments to impair their functions.Bin WanMarylène PoiriéJean-Luc GattiTaylor & Francis Grouparticlelamellocytesendosomeslysosomesraftsdrosophila melanogastervenosomesparasitoid waspsconfocal microscopyInfectious and parasitic diseasesRC109-216ENVirulence, Vol 11, Iss 1, Pp 1512-1521 (2020)
institution DOAJ
collection DOAJ
language EN
topic lamellocytes
endosomes
lysosomes
rafts
drosophila melanogaster
venosomes
parasitoid wasps
confocal microscopy
Infectious and parasitic diseases
RC109-216
spellingShingle lamellocytes
endosomes
lysosomes
rafts
drosophila melanogaster
venosomes
parasitoid wasps
confocal microscopy
Infectious and parasitic diseases
RC109-216
Bin Wan
Marylène Poirié
Jean-Luc Gatti
Parasitoid wasp venom vesicles (venosomes) enter Drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway
description Venosomes are extracellular vesicles found in the venom of Leptopilina endoparasitoids wasps, which transport and target virulence factors to impair the parasitoid egg encapsulation by the lamellocytes of their Drosophila melanogaster host larva. Using the co-immunolocalization of fluorescent L. boulardi venosomes and one of the putative-transported virulence factors, LbGAP, with known markers of cellular endocytosis, we show that venosomes endocytosis by lamellocytes is not a process dependent on clathrin or macropinocytosis and internalization seems to bypass the early endosomal compartment Rab5. After internalization, LbGAP colocalizes strongly with flotillin-1 and the GPI-anchored protein Atilla/L1 (a lamellocyte surface marker) suggesting that entry occurs via a flotillin/lipid raft-dependent pathway. Once internalized, venosomes reach all intracellular compartments, including late and recycling endosomes, lysosomes, and the endoplasmic reticulum network. Venosomes therefore enter their target cells by a specific mechanism and the virulence factors are widely distributed in the lamellocytes’ compartments to impair their functions.
format article
author Bin Wan
Marylène Poirié
Jean-Luc Gatti
author_facet Bin Wan
Marylène Poirié
Jean-Luc Gatti
author_sort Bin Wan
title Parasitoid wasp venom vesicles (venosomes) enter Drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway
title_short Parasitoid wasp venom vesicles (venosomes) enter Drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway
title_full Parasitoid wasp venom vesicles (venosomes) enter Drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway
title_fullStr Parasitoid wasp venom vesicles (venosomes) enter Drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway
title_full_unstemmed Parasitoid wasp venom vesicles (venosomes) enter Drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway
title_sort parasitoid wasp venom vesicles (venosomes) enter drosophila melanogaster lamellocytes through a flotillin/lipid raft-dependent endocytic pathway
publisher Taylor & Francis Group
publishDate 2020
url https://doaj.org/article/8abb264d027f459fa9ed5ba8e4e9106c
work_keys_str_mv AT binwan parasitoidwaspvenomvesiclesvenosomesenterdrosophilamelanogasterlamellocytesthroughaflotillinlipidraftdependentendocyticpathway
AT marylenepoirie parasitoidwaspvenomvesiclesvenosomesenterdrosophilamelanogasterlamellocytesthroughaflotillinlipidraftdependentendocyticpathway
AT jeanlucgatti parasitoidwaspvenomvesiclesvenosomesenterdrosophilamelanogasterlamellocytesthroughaflotillinlipidraftdependentendocyticpathway
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