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Details	EV-TRACK ID	Experiment nr.	Species	Sample type	Isolation protocol	First author	Year	EV-METRIC
	EV120013	1/1	Homo sapiens	Cell culture supernatant	DG UF Density cushion dUC	Choi DS	2012	50%
Study summary Full title Quantitative proteomics of extracellular vesicles derived from human primary and metastatic colorectal cancer cells All authors Choi DS, Choi DY, Hong BS, Jang SC, Kim DK, Lee J, Kim YK, Kim KP, Gho YS Journal J Extracell Vesicles Abstract Cancer cells actively release extracellular vesicles (EVs), including exosomes and microvesicles, in (show more...)Cancer cells actively release extracellular vesicles (EVs), including exosomes and microvesicles, into surrounding tissues. These EVs play pleiotropic roles in cancer progression and metastasis, including invasion, angiogenesis, and immune modulation. However, the proteomic differences between primary and metastatic cancer cell-derived EVs remain unclear. Here, we conducted comparative proteomic analysis between EVs derived from human primary colorectal cancer cells (SW480) and their metastatic derivatives (SW620). Using label-free quantitation, we identified 803 and 787 proteins in SW480 EVs and SW620 EVs, respectively. Based on comparison between the estimated abundance of EV proteins, we identified 368 SW480 EV-enriched and 359 SW620 EV-enriched proteins. SW480 EV-enriched proteins played a role in cell adhesion, but SW620 EV-enriched proteins were associated with cancer progression and functioned as diagnostic indicators of metastatic cancer; they were overexpressed in metastatic colorectal cancer and played roles in multidrug resistance. As the first proteomic analysis comparing primary and metastatic cancer-derived EVs, this study increases our understanding of the pathological function of EVs in the metastatic process and provides useful biomarkers for cancer metastasis. (hide) EV-METRIC 50% (85th 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 Isolation method: density gradient, at least as validation of results attributed to EVs EV density Isolation method: reporting of obtained EV density ultracentrifugation specifics Isolation 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 DNF Focus vesicles extracellular vesicles Isolation protocol Isolation protocol Gives a short, non-chronological overview of the different steps of the isolation protocol. dUC = differential ultracentrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography DG + UF + Density cushion + dUC Protein markers EV: CD63/ LAMP1/ CD81/ Alix/ ICAM1/ Beta-actin/ CD9 non-EV: Proteomics yes EV density (g/ml) 1.08-1.1 Show all info Study aim Omics Sample Species Homo sapiens Sample Type Cell culture supernatant EV-harvesting Medium serum free Isolation Method Differential ultracentrifugation dUC: centrifugation steps Below or equal to 800 g Between 800 g and 10,000 g Density gradient Density medium Iodixanol Lowest density fraction 5 Highest density fraction 30 Orientation Bottom-up Characterization: Protein analysis Western Blot Detected EV-associated proteins Alix/ CD63/ CD81/ CD9/ LAMP1/ ICAM1/ Beta-actin ELISA Detected EV-associated proteins LAMP1/ ICAM1/ Beta-actin Characterization: Particle analysis NTA EM EM-type transmission EM Image type Wide-field

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