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Details	EV-TRACK ID	Experiment nr.	Species	Sample type	separation protocol	First author	Year	EV-METRIC
	EV170024	1/3	Homo sapiens	Cell culture supernatant	(d)(U)C Filtration	Volgers C	2017	33%
Study summary Full title Bead-based flow-cytometry for semi-quantitative analysis of complex membrane vesicle populations released by bacteria and host cells. All authors Volgers C, Benedikter BJ, Grauls GE, Savelkoul PHM, Stassen FRM Journal Aging (Albany NY) Abstract During infection, the release of nano-sized membrane vesicle is a process which is common both for b (show more...)During infection, the release of nano-sized membrane vesicle is a process which is common both for bacteria and host cells. Host cell-derived membrane vesicles can be involved in innate and adaptive immunity whereas bacterial membrane vesicles can contribute to bacterial pathogenicity. To study the contribution of both membrane vesicle populations during infection is highly complicated as most vesicles fall within a similar size range of 30-300nm. Specialized techniques for purification are required and often no single technique complies on its own. Moreover, techniques for vesicle quantification are either complicated to use or do not distinguish between host cell-derived and bacterial membrane vesicle subpopulations. Here we demonstrate a bead-based platform that allows a semi-quantitatively analysis by flow-cytometry of bacterial and host-cell derived membrane vesicles. We show this method can be used to study heterogeneous and complex vesicle populations composed of bacterial and host-cell membrane vesicles. The easy accessible design of the protocol makes it also highly suitable for screening procedures to assess how intrinsic and environmental factors affect vesicle release. (hide) EV-METRIC 33% (61st 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 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 Control condition Focus vesicles membrane vesicles Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. (d)(U)C = (differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography (d)(U)C + Filtration Adj. k-factor 156.9 (pelleting) Protein markers EV: CD81/ CD63,CD81/ CD63 non-EV: None Proteomics no Show all info Study aim New methodological development Sample Species Homo sapiens Sample Type Cell culture supernatant Sample Condition Control condition EV-producing cells THP1 EV-harvesting Medium EV-depleted serum Preparation of EDS overnight (16h) at >=100,000g Separation Method Differential ultracentrifugation centrifugation steps Below or equal to 800 g Between 800 g and 10,000 g Between 100,000 g and 150,000 g Obtain an EV pellet : Yes Pelleting: time(min) 90 Pelleting: rotor type Type 70 Ti Pelleting: speed (g) 100000 Pelleting: adjusted k-factor 156.9 Filtration steps 0.22µm or 0.2µm Characterization: Protein analysis Protein Concentration Method microBCA Western Blot Antibody details provided? Yes Lysis buffer provided? Yes Detected EV-associated proteins CD63,CD81 Flow cytometry specific beads Selected surface protein(s) CD63

	EV170024	2/3	Moraxella catarrhalis	Cell culture supernatant	(d)(U)C Filtration	Volgers C	2017	33%
Study summary Full title Bead-based flow-cytometry for semi-quantitative analysis of complex membrane vesicle populations released by bacteria and host cells. All authors Volgers C, Benedikter BJ, Grauls GE, Savelkoul PHM, Stassen FRM Journal Aging (Albany NY) Abstract During infection, the release of nano-sized membrane vesicle is a process which is common both for b (show more...)During infection, the release of nano-sized membrane vesicle is a process which is common both for bacteria and host cells. Host cell-derived membrane vesicles can be involved in innate and adaptive immunity whereas bacterial membrane vesicles can contribute to bacterial pathogenicity. To study the contribution of both membrane vesicle populations during infection is highly complicated as most vesicles fall within a similar size range of 30-300nm. Specialized techniques for purification are required and often no single technique complies on its own. Moreover, techniques for vesicle quantification are either complicated to use or do not distinguish between host cell-derived and bacterial membrane vesicle subpopulations. Here we demonstrate a bead-based platform that allows a semi-quantitatively analysis by flow-cytometry of bacterial and host-cell derived membrane vesicles. We show this method can be used to study heterogeneous and complex vesicle populations composed of bacterial and host-cell membrane vesicles. The easy accessible design of the protocol makes it also highly suitable for screening procedures to assess how intrinsic and environmental factors affect vesicle release. (hide) EV-METRIC 33% (61st 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 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 Control condition Focus vesicles membrane vesicles Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. (d)(U)C = (differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography (d)(U)C + Filtration Adj. k-factor 156.9 (pelleting) Protein markers EV: Moraxella catarrhalis antigen non-EV: None Proteomics no Show all info Study aim New methodological development Sample Species Moraxella catarrhalis Sample Type Cell culture supernatant Sample Condition Control condition EV-producing cells Moraxella catarrhalis EV-harvesting Medium EV-depleted serum Preparation of EDS overnight (16h) at >=100,000g Separation Method Differential ultracentrifugation centrifugation steps Below or equal to 800 g Between 800 g and 10,000 g Between 100,000 g and 150,000 g Obtain an EV pellet : Yes Pelleting: time(min) 90 Pelleting: rotor type Type 70 Ti Pelleting: speed (g) 100000 Pelleting: adjusted k-factor 156.9 Filtration steps 0.22µm or 0.2µm Characterization: Protein analysis Protein Concentration Method microBCA Western Blot Antibody details provided? Yes Lysis buffer provided? Yes Detected EV-associated proteins Moraxella catarrhalis antigen Flow cytometry specific beads Selected surface protein(s) Moraxella catarrhalis antigen Characterization: Particle analysis TRPS EV concentration Yes Particle yield 1.50E+09 particles/ml start sample

	EV170024	3/3	Pseudomonas aeruginosa	Cell culture supernatant	(d)(U)C Filtration	Volgers C	2017	33%
Study summary Full title Bead-based flow-cytometry for semi-quantitative analysis of complex membrane vesicle populations released by bacteria and host cells. All authors Volgers C, Benedikter BJ, Grauls GE, Savelkoul PHM, Stassen FRM Journal Aging (Albany NY) Abstract During infection, the release of nano-sized membrane vesicle is a process which is common both for b (show more...)During infection, the release of nano-sized membrane vesicle is a process which is common both for bacteria and host cells. Host cell-derived membrane vesicles can be involved in innate and adaptive immunity whereas bacterial membrane vesicles can contribute to bacterial pathogenicity. To study the contribution of both membrane vesicle populations during infection is highly complicated as most vesicles fall within a similar size range of 30-300nm. Specialized techniques for purification are required and often no single technique complies on its own. Moreover, techniques for vesicle quantification are either complicated to use or do not distinguish between host cell-derived and bacterial membrane vesicle subpopulations. Here we demonstrate a bead-based platform that allows a semi-quantitatively analysis by flow-cytometry of bacterial and host-cell derived membrane vesicles. We show this method can be used to study heterogeneous and complex vesicle populations composed of bacterial and host-cell membrane vesicles. The easy accessible design of the protocol makes it also highly suitable for screening procedures to assess how intrinsic and environmental factors affect vesicle release. (hide) EV-METRIC 33% (61st 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 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 Control condition Focus vesicles membrane vesicles Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. (d)(U)C = (differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography (d)(U)C + Filtration Adj. k-factor 156.9 (pelleting) Protein markers EV: Pseudomonas aeruginosa antigen non-EV: None Proteomics no Show all info Study aim New methodological development Sample Species Pseudomonas aeruginosa Sample Type Cell culture supernatant Sample Condition Control condition EV-producing cells Pseudomonas aeruginosa EV-harvesting Medium EV-depleted serum Preparation of EDS overnight (16h) at >=100,000g Separation Method Differential ultracentrifugation centrifugation steps Below or equal to 800 g Between 800 g and 10,000 g Between 100,000 g and 150,000 g Obtain an EV pellet : Yes Pelleting: time(min) 90 Pelleting: rotor type Type 70 Ti Pelleting: speed (g) 100000 Pelleting: adjusted k-factor 156.9 Filtration steps 0.22µm or 0.2µm Characterization: Protein analysis Protein Concentration Method microBCA Western Blot Antibody details provided? Yes Lysis buffer provided? Yes Detected EV-associated proteins Pseudomonas aeruginosa antigen Flow cytometry specific beads Selected surface protein(s) Pseudomonas aeruginosa antigen Characterization: Particle analysis TRPS EV concentration Yes Particle yield 1.00E+09 particles/ml start sample

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