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Details	EV-TRACK ID	Experiment nr.	Species	Sample type	Separation protocol	First author	Year	EV-METRIC
	EV120031	2/2	Homo sapiens	NAY	(d)(U)C DG Filtration UF	Epple LM	2012	56%
Study summary Full title Medulloblastoma exosome proteomics yield functional roles for extracellular vesicles All authors Epple LM, Griffiths SG, Dechkovskaia AM, Dusto NL, White J, Ouellette RJ, Anchordoquy TJ, Bemis LT, Graner MW Journal PLoS One Abstract Medulloblastomas are the most prevalent malignant pediatric brain tumors. Survival for these patient (show more...)Medulloblastomas are the most prevalent malignant pediatric brain tumors. Survival for these patients has remained largely the same for approximately 20 years, and our therapies for these cancers cause significant health, cognitive, behavioral and developmental sequelae for those who survive the tumor and their treatments. We obviously need a better understanding of the biology of these tumors, particularly with regard to their migratory/invasive behaviors, their proliferative propensity, and their abilities to deflect immune responses. Exosomes, virus-sized membrane vesicles released extracellularly from cells after formation in, and transit thru, the endosomal pathway, may play roles in medulloblastoma pathogenesis but are as yet unstudied in this disease. Here we characterized exosomes from a medulloblastoma cell line with biochemical and proteomic analyses, and included characterization of patient serum exosomes. Further scrutiny of the proteomic data suggested functional properties of the exosomes that are relevant to medulloblastoma tumor biology, including their roles as proliferation stimulants, their activities as attractants for tumor cell migration, and their immune modulatory impacts on lymphocytes. Aspects of this held true for exosomes from other medulloblastoma cell lines as well. Additionally, pathway analyses suggested a possible role for the transcription factor hepatocyte nuclear factor 4 alpha (HNF4A); however, inhibition of the protein's activity actually increased D283MED cell proliferation/clonogenecity, suggesting that HNF4A may act as a tumor suppressor in this cell line. Our work demonstrates that relevant functional properties of exosomes may be derived from appropriate proteomic analyses, which translate into mechanisms of tumor pathophysiology harbored in these extracellular vesicles. (hide) EV-METRIC 56% (90th 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 / extracellular vesicles 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 Filtration UF Adj. k-factor 122.2 (pelleting) / 122.2 (washing) Protein markers EV: HSC70/ HSP90/ GAPDH/ HSP27/ HSP70/ AChE/ HSP60/ CD9 non-EV: Proteomics yes EV density (g/ml) 1.11-1.15 Show all info Study aim Omics Sample Species Homo sapiens Sample Type Cell culture supernatant EV-harvesting Medium serum free Separation Method (Differential) (ultra)centrifugation dUC: centrifugation steps Between 100,000 g and 150,000 g Pelleting performed Yes Pelleting: time(min) 60 Pelleting: rotor type 70.1Ti Pelleting: adjusted k-factor 122.2 Wash: volume per pellet (ml) 8 Wash: Rotor Type 70.1Ti Wash: adjusted k-factor 122.2 Density gradient Only used for validation of main results Yes Highest density fraction 60 Filtration steps 0.22µm or 0.2µm Characterization: Protein analysis Western Blot Detected EV-associated proteins CD9/ HSP90/ HSP70/ AChE/ HSP60/ HSC70/ HSP27/ GAPDH ELISA Detected EV-associated proteins AChE/ HSP60/ HSC70/ HSP27/ GAPDH Characterization: Particle analysis DLS NTA EM EM-type transmission EM Image type Close-up

	EV120031	1/2	Homo sapiens	Serum	ExoQuick	Epple LM	2012	13%
Study summary Full title Medulloblastoma exosome proteomics yield functional roles for extracellular vesicles All authors Epple LM, Griffiths SG, Dechkovskaia AM, Dusto NL, White J, Ouellette RJ, Anchordoquy TJ, Bemis LT, Graner MW Journal PLoS One Abstract Medulloblastomas are the most prevalent malignant pediatric brain tumors. Survival for these patient (show more...)Medulloblastomas are the most prevalent malignant pediatric brain tumors. Survival for these patients has remained largely the same for approximately 20 years, and our therapies for these cancers cause significant health, cognitive, behavioral and developmental sequelae for those who survive the tumor and their treatments. We obviously need a better understanding of the biology of these tumors, particularly with regard to their migratory/invasive behaviors, their proliferative propensity, and their abilities to deflect immune responses. Exosomes, virus-sized membrane vesicles released extracellularly from cells after formation in, and transit thru, the endosomal pathway, may play roles in medulloblastoma pathogenesis but are as yet unstudied in this disease. Here we characterized exosomes from a medulloblastoma cell line with biochemical and proteomic analyses, and included characterization of patient serum exosomes. Further scrutiny of the proteomic data suggested functional properties of the exosomes that are relevant to medulloblastoma tumor biology, including their roles as proliferation stimulants, their activities as attractants for tumor cell migration, and their immune modulatory impacts on lymphocytes. Aspects of this held true for exosomes from other medulloblastoma cell lines as well. Additionally, pathway analyses suggested a possible role for the transcription factor hepatocyte nuclear factor 4 alpha (HNF4A); however, inhibition of the protein's activity actually increased D283MED cell proliferation/clonogenecity, suggesting that HNF4A may act as a tumor suppressor in this cell line. Our work demonstrates that relevant functional properties of exosomes may be derived from appropriate proteomic analyses, which translate into mechanisms of tumor pathophysiology harbored in these extracellular vesicles. (hide) EV-METRIC 13% (47th 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 Serum Sample origin NAY Focus vesicles exosomes / extracellular vesicles 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 ExoQuick Protein markers EV: HSP70/ CD63/ CD9/ HSC70 non-EV: Proteomics no Show all info Study aim Omics Sample Species Homo sapiens Sample Type Serum Separation Method Commercial kit ExoQuick Other Name other separation method ExoQuick Characterization: Protein analysis Western Blot Detected EV-associated proteins CD63/ CD9/ HSP70/ HSC70 ELISA Detected EV-associated proteins HSC70 Characterization: Particle analysis EM EM-type transmission EM Image type Close-up

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EV-TRACK ID	EV120031
species	Homo sapiens
sample type	Cell culture	Serum
cell type	NAY	NA
medium	serum free
condition	NAY	NAY
separation protocol	(d)(U)C DG Filtration UF	ExoQuick
Exp. nr.	2	1
EV-METRIC %	56	13