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Details	EV-TRACK ID	Experiment nr.	Species	Sample type	Separation protocol	First author	Year	EV-METRIC
	EV130023	2/2	Drosophila melanogaster	Drosophila	(d)(U)C DG	Beckett K	2013	56%
Study summary Full title Drosophila S2 cells secrete wingless on exosome-like vesicles but the wingless gradient forms independently of exosomes All authors Beckett K, Monier S, Palmer L, Alexandre C, Green H, Bonneil E, Raposo G, Thibault P, Le Borgne R, Vincent JP Journal Traffic Abstract Wingless acts as a morphogen in Drosophila wing discs, where it specifies cell fates and controls gr (show more...)Wingless acts as a morphogen in Drosophila wing discs, where it specifies cell fates and controls growth several cell diameters away from its site of expression. Thus, despite being acylated and membrane associated, Wingless spreads in the extracellular space. Recent studies have focussed on identifying the route that Wingless follows in the secretory pathway and determining how it is packaged for release. We have found that, in medium conditioned by Wingless-expressing Drosophila S2 cells, Wingless is present on exosome-like vesicles and that this fraction activates signal transduction. Proteomic analysis shows that Wingless-containing exosome-like structures contain many Drosophila proteins that are homologous to mammalian exosome proteins. In addition, Evi, a multipass transmembrane protein, is also present on exosome-like vesicles. Using these exosome markers and a cell-based RNAi assay, we found that the small GTPase Rab11 contributes significantly to exosome production. This finding allows us to conclude from in vivo Rab11 knockdown experiments, that exosomes are unlikely to contribute to Wingless secretion and gradient formation in wing discs. Consistent with this conclusion, extracellularly tagged Evi expressed from a Bacterial Artificial Chromosome is not released from imaginal disc Wingless-expressing cells. (hide) EV-METRIC 56% (50th percentile of all experiments on the same sample type) Reported Not reported Not applicable EV-enriched proteins Protein analysis: analysis of three or more EV-enriched proteins non EV-enriched protein Protein analysis: assessment of a non-EV-enriched protein qualitative and quantitative analysis Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected. electron microscopy images Particle analysis: inclusion of a widefield and close-up electron microscopy image density gradient Separation method: density gradient, at least as validation of results attributed to EVs EV density Separation method: reporting of obtained EV density ultracentrifugation specifics Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps antibody specifics Protein analysis: antibody clone/reference number and dilution lysate preparation Protein analysis: lysis buffer composition Study data Sample type Drosophila Sample origin NAY Focus vesicles exosomes Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. dUC = (Differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography IAF = immuno-affinity capture (d)(U)C DG Protein markers EV: Wg non-EV: Cell organelle protein Proteomics yes EV density (g/ml) 1.14-1.19 Show all info Study aim Function Sample Species Drosophila melanogaster Sample Type Drosophila Separation Method (Differential) (ultra)centrifugation dUC: centrifugation steps Below or equal to 800 g Between 800 g and 10,000 g Between 10,000 g and 50,000 g Between 100,000 g and 150,000 g Pelleting performed Yes Pelleting: time(min) 90 Density gradient Only used for validation of main results Yes Lowest density fraction 0.25 Highest density fraction 2 Orientation Bottom-up Speed (g) 100000 Characterization: Protein analysis Western Blot Antibody details provided? No Detected EV-associated proteins Wg Detected contaminants Cell organelle protein ELISA Antibody details provided? No Detected EV-associated proteins Wg Characterization: Particle analysis EM EM-type immune EM EM protein HA-Wg Image type Wide-field

	EV130023	1/2	Drosophila melanogaster	NAY	(d)(U)C DG	Beckett K	2013	33%
Study summary Full title Drosophila S2 cells secrete wingless on exosome-like vesicles but the wingless gradient forms independently of exosomes All authors Beckett K, Monier S, Palmer L, Alexandre C, Green H, Bonneil E, Raposo G, Thibault P, Le Borgne R, Vincent JP Journal Traffic Abstract Wingless acts as a morphogen in Drosophila wing discs, where it specifies cell fates and controls gr (show more...)Wingless acts as a morphogen in Drosophila wing discs, where it specifies cell fates and controls growth several cell diameters away from its site of expression. Thus, despite being acylated and membrane associated, Wingless spreads in the extracellular space. Recent studies have focussed on identifying the route that Wingless follows in the secretory pathway and determining how it is packaged for release. We have found that, in medium conditioned by Wingless-expressing Drosophila S2 cells, Wingless is present on exosome-like vesicles and that this fraction activates signal transduction. Proteomic analysis shows that Wingless-containing exosome-like structures contain many Drosophila proteins that are homologous to mammalian exosome proteins. In addition, Evi, a multipass transmembrane protein, is also present on exosome-like vesicles. Using these exosome markers and a cell-based RNAi assay, we found that the small GTPase Rab11 contributes significantly to exosome production. This finding allows us to conclude from in vivo Rab11 knockdown experiments, that exosomes are unlikely to contribute to Wingless secretion and gradient formation in wing discs. Consistent with this conclusion, extracellularly tagged Evi expressed from a Bacterial Artificial Chromosome is not released from imaginal disc Wingless-expressing cells. (hide) EV-METRIC 33% (75th percentile of all experiments on the same sample type) Reported Not reported Not applicable EV-enriched proteins Protein analysis: analysis of three or more EV-enriched proteins non EV-enriched protein Protein analysis: assessment of a non-EV-enriched protein qualitative and quantitative analysis Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected. electron microscopy images Particle analysis: inclusion of a widefield and close-up electron microscopy image density gradient Separation method: density gradient, at least as validation of results attributed to EVs EV density Separation method: reporting of obtained EV density ultracentrifugation specifics Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps antibody specifics Protein analysis: antibody clone/reference number and dilution lysate preparation Protein analysis: lysis buffer composition Study data Sample type Cell culture supernatant Sample origin NAY Focus vesicles exosomes Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. dUC = (Differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography IAF = immuno-affinity capture (d)(U)C DG Protein markers EV: Flotillin2 non-EV: Proteomics yes EV density (g/ml) 1.17 Show all info Study aim Function Sample Species Drosophila melanogaster Sample Type Cell culture supernatant EV-harvesting Medium EV Depleted Separation Method (Differential) (ultra)centrifugation dUC: centrifugation steps Below or equal to 800 g Between 800 g and 10,000 g Between 10,000 g and 50,000 g Between 100,000 g and 150,000 g Pelleting performed Yes Pelleting: time(min) 90 Density gradient Only used for validation of main results Yes Lowest density fraction 0.25 Highest density fraction 2 Orientation Bottom-up Speed (g) 100000 Characterization: Protein analysis Western Blot Antibody details provided? No Detected EV-associated proteins Flotillin2 ELISA Antibody details provided? No Detected EV-associated proteins Flotillin2 Characterization: Particle analysis None

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EV-TRACK ID	EV130023
species	Drosophila melanogaster
sample type	Drosophila	Cell culture
cell type	NA	NAY
medium		EV Depleted
condition	NAY	NAY
separation protocol	(d)(U)C DG	(d)(U)C DG
Exp. nr.	2	1
EV-METRIC %	56	33