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Details	EV-TRACK ID	Experiment nr.	Species	Sample type	separation protocol	First author	Year	EV-METRIC
	EV200178	2/4	Homo sapiens	Blood plasma	(Differential) (ultra)centrifugation Density cushion Filtration	Pillay, Preenan	2016	44%
Study summary Full title Placental exosomes and pre-eclampsia: Maternal circulating levels in normal pregnancies and, early and late onset pre-eclamptic pregnancies All authors Preenan Pillay, Niren Maharaj, Jagidesa Moodley, Irene Mackraj Journal Placenta Abstract Introduction and aim: Exosomes are a subtype of extracellular vesicle (20-130 nm) released by biolog (show more...)Introduction and aim: Exosomes are a subtype of extracellular vesicle (20-130 nm) released by biological cells under normal and pathological conditions. Although there have been reports of circulating exosomes in normal pregnancy, the relevance of placental-derived exosomes in normal and abnormal pregnancies still needs to be elucidated. The aim of this study was to quantify total and placental-derived exosomes in maternal plasma from normal (N), early onset- and late onset-preeclampsia (PE). Method: Plasma samples were obtained from pregnant women in the third trimester, for the isolation of exosomes by differential ultracentrifugation. Total exosomes were quantified using nanoparticle tracking analysis and immuno-reactive exosomal CD63 quantification. Placental-derived exosomes were quantified using placental alkaline phosphatase (PLAP) as a specific marker. The contribution of placental-derived exosomes to total exosomes in maternal plasma was determined by the ratio of PLAP+ exosomes to CD63+ exosomes. Results: The concentration of total exosomes significantly increased in early onset-PE and late onset-PE compared to N (≤33 weeks) and N (≥34 weeks). The relative concentration of placental-derived exosomes significantly increased in early onset-PE but decreased in late onset-PE compared to N. The ratio of PLAP+ exosomes to total number of exosomes significantly decreased in early onset-PE and late onset-PE. A positive correlation between total and placental-derived exosomes were obtained in N (≤33 weeks: Pearson's r = 0.60, ≥34 weeks: Pearson's r = 0.67) and early onset-PE (Pearson's r = 0.51, p < 0.05) with the inverse in late onset-PE (Pearson's r = -0.62, p < 0.01). Conclusion: The differences in the contribution of placental-derived exosomes to total exosomes in maternal circulation suggests a possible pathophysiological role of placental-derived exosomes in pre-eclampsia. (hide) EV-METRIC 44% (77th 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 Blood plasma Sample origin Normal pregnancy (>34 weeks gestation) Focus vesicles exosome 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 (Differential) (ultra)centrifugation + Density cushion + Filtration Protein markers EV: PLAP/ CD63 non-EV: None Proteomics no Show all info Study aim Function/Biomarker Sample Species Homo sapiens Sample Type Blood plasma Sample Condition Normal pregnancy (>34 weeks gestation) Separation Method Differential ultracentrifugation centrifugation steps Between 800 g and 10,000 g Between 10,000 g and 50,000 g Between 100,000 g and 150,000 g Obtain an EV pellet : Yes Pelleting: time(min) 70 Pelleting: rotor type MLA-55 Pelleting: speed (g) 110000 Wash: volume per pellet (ml) Not specified Wash: time (min) 70 Wash: Rotor Type MLA-55 Wash: speed (g) 110000 Filtration steps 0.22µm or 0.2µm Density cushion Density medium Sucrose Characterization: Protein analysis Protein Concentration Method Lowry Western Blot Detected EV-associated proteins CD63 ELISA Detected EV-associated proteins CD63/ PLAP Flow cytometry Hardware adjustments Characterization: Particle analysis NTA Report type Mean Reported size (nm) 100.3 + - 7.78 nm EV concentration Yes EM EM-type Transmission-EM Image type Wide-field

	EV200178	1/4	Homo sapiens	Blood plasma	(Differential) (ultra)centrifugation Density cushion Filtration	Pillay, Preenan	2016	33%
Study summary Full title Placental exosomes and pre-eclampsia: Maternal circulating levels in normal pregnancies and, early and late onset pre-eclamptic pregnancies All authors Preenan Pillay, Niren Maharaj, Jagidesa Moodley, Irene Mackraj Journal Placenta Abstract Introduction and aim: Exosomes are a subtype of extracellular vesicle (20-130 nm) released by biolog (show more...)Introduction and aim: Exosomes are a subtype of extracellular vesicle (20-130 nm) released by biological cells under normal and pathological conditions. Although there have been reports of circulating exosomes in normal pregnancy, the relevance of placental-derived exosomes in normal and abnormal pregnancies still needs to be elucidated. The aim of this study was to quantify total and placental-derived exosomes in maternal plasma from normal (N), early onset- and late onset-preeclampsia (PE). Method: Plasma samples were obtained from pregnant women in the third trimester, for the isolation of exosomes by differential ultracentrifugation. Total exosomes were quantified using nanoparticle tracking analysis and immuno-reactive exosomal CD63 quantification. Placental-derived exosomes were quantified using placental alkaline phosphatase (PLAP) as a specific marker. The contribution of placental-derived exosomes to total exosomes in maternal plasma was determined by the ratio of PLAP+ exosomes to CD63+ exosomes. Results: The concentration of total exosomes significantly increased in early onset-PE and late onset-PE compared to N (≤33 weeks) and N (≥34 weeks). The relative concentration of placental-derived exosomes significantly increased in early onset-PE but decreased in late onset-PE compared to N. The ratio of PLAP+ exosomes to total number of exosomes significantly decreased in early onset-PE and late onset-PE. A positive correlation between total and placental-derived exosomes were obtained in N (≤33 weeks: Pearson's r = 0.60, ≥34 weeks: Pearson's r = 0.67) and early onset-PE (Pearson's r = 0.51, p < 0.05) with the inverse in late onset-PE (Pearson's r = -0.62, p < 0.01). Conclusion: The differences in the contribution of placental-derived exosomes to total exosomes in maternal circulation suggests a possible pathophysiological role of placental-derived exosomes in pre-eclampsia. (hide) EV-METRIC 33% (63rd 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 Blood plasma Sample origin Normal pregnancy (< 33 weeks gestation) Focus vesicles exosome 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 (Differential) (ultra)centrifugation + Density cushion + Filtration Protein markers EV: PLAP/ CD63 non-EV: None Proteomics no Show all info Study aim Function/Biomarker Sample Species Homo sapiens Sample Type Blood plasma Sample Condition Normal pregnancy (< 33 weeks gestation) Separation Method Differential ultracentrifugation centrifugation steps Between 800 g and 10,000 g Between 10,000 g and 50,000 g Between 100,000 g and 150,000 g Obtain an EV pellet : Yes Pelleting: time(min) 70 Pelleting: rotor type MLA-55 Pelleting: speed (g) 110000 Wash: volume per pellet (ml) Not specified Wash: time (min) 70 Wash: Rotor Type MLA-55 Wash: speed (g) 110000 Filtration steps 0.22µm or 0.2µm Density cushion Density medium Sucrose Characterization: Protein analysis Protein Concentration Method Lowry Western Blot Detected EV-associated proteins CD63 ELISA Detected EV-associated proteins CD63/ PLAP Flow cytometry Hardware adjustments Characterization: Particle analysis NTA Report type Mean Reported size (nm) 102.9 + - 12.16 EV concentration Yes

	EV200178	3/4	Homo sapiens	Blood plasma	(Differential) (ultra)centrifugation Density cushion Filtration	Pillay, Preenan	2016	33%
Study summary Full title Placental exosomes and pre-eclampsia: Maternal circulating levels in normal pregnancies and, early and late onset pre-eclamptic pregnancies All authors Preenan Pillay, Niren Maharaj, Jagidesa Moodley, Irene Mackraj Journal Placenta Abstract Introduction and aim: Exosomes are a subtype of extracellular vesicle (20-130 nm) released by biolog (show more...)Introduction and aim: Exosomes are a subtype of extracellular vesicle (20-130 nm) released by biological cells under normal and pathological conditions. Although there have been reports of circulating exosomes in normal pregnancy, the relevance of placental-derived exosomes in normal and abnormal pregnancies still needs to be elucidated. The aim of this study was to quantify total and placental-derived exosomes in maternal plasma from normal (N), early onset- and late onset-preeclampsia (PE). Method: Plasma samples were obtained from pregnant women in the third trimester, for the isolation of exosomes by differential ultracentrifugation. Total exosomes were quantified using nanoparticle tracking analysis and immuno-reactive exosomal CD63 quantification. Placental-derived exosomes were quantified using placental alkaline phosphatase (PLAP) as a specific marker. The contribution of placental-derived exosomes to total exosomes in maternal plasma was determined by the ratio of PLAP+ exosomes to CD63+ exosomes. Results: The concentration of total exosomes significantly increased in early onset-PE and late onset-PE compared to N (≤33 weeks) and N (≥34 weeks). The relative concentration of placental-derived exosomes significantly increased in early onset-PE but decreased in late onset-PE compared to N. The ratio of PLAP+ exosomes to total number of exosomes significantly decreased in early onset-PE and late onset-PE. A positive correlation between total and placental-derived exosomes were obtained in N (≤33 weeks: Pearson's r = 0.60, ≥34 weeks: Pearson's r = 0.67) and early onset-PE (Pearson's r = 0.51, p < 0.05) with the inverse in late onset-PE (Pearson's r = -0.62, p < 0.01). Conclusion: The differences in the contribution of placental-derived exosomes to total exosomes in maternal circulation suggests a possible pathophysiological role of placental-derived exosomes in pre-eclampsia. (hide) EV-METRIC 33% (63rd 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 Blood plasma Sample origin Early-onset pre-eclampsia (< 33 weeks gestation) Focus vesicles exosome 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 (Differential) (ultra)centrifugation + Density cushion + Filtration Protein markers EV: PLAP/ CD63 non-EV: None Proteomics no Show all info Study aim Function/Biomarker Sample Species Homo sapiens Sample Type Blood plasma Sample Condition Early-onset pre-eclampsia (< 33 weeks gestation) Separation Method Differential ultracentrifugation centrifugation steps Between 800 g and 10,000 g Between 10,000 g and 50,000 g Between 100,000 g and 150,000 g Obtain an EV pellet : Yes Pelleting: time(min) 70 Pelleting: rotor type MLA-55 Pelleting: speed (g) 110000 Wash: volume per pellet (ml) Not specified Wash: time (min) 70 Wash: Rotor Type MLA-55 Wash: speed (g) 110000 Filtration steps 0.22µm or 0.2µm Density cushion Density medium Sucrose Characterization: Protein analysis Protein Concentration Method Lowry Western Blot Detected EV-associated proteins CD63 ELISA Detected EV-associated proteins CD63/ PLAP Flow cytometry Hardware adjustments Characterization: Particle analysis NTA Report type Mean Reported size (nm) 101.8 + - 7.68 nm EV concentration Yes

	EV200178	4/4	Homo sapiens	Blood plasma	(Differential) (ultra)centrifugation Density cushion Filtration	Pillay, Preenan	2016	33%
Study summary Full title Placental exosomes and pre-eclampsia: Maternal circulating levels in normal pregnancies and, early and late onset pre-eclamptic pregnancies All authors Preenan Pillay, Niren Maharaj, Jagidesa Moodley, Irene Mackraj Journal Placenta Abstract Introduction and aim: Exosomes are a subtype of extracellular vesicle (20-130 nm) released by biolog (show more...)Introduction and aim: Exosomes are a subtype of extracellular vesicle (20-130 nm) released by biological cells under normal and pathological conditions. Although there have been reports of circulating exosomes in normal pregnancy, the relevance of placental-derived exosomes in normal and abnormal pregnancies still needs to be elucidated. The aim of this study was to quantify total and placental-derived exosomes in maternal plasma from normal (N), early onset- and late onset-preeclampsia (PE). Method: Plasma samples were obtained from pregnant women in the third trimester, for the isolation of exosomes by differential ultracentrifugation. Total exosomes were quantified using nanoparticle tracking analysis and immuno-reactive exosomal CD63 quantification. Placental-derived exosomes were quantified using placental alkaline phosphatase (PLAP) as a specific marker. The contribution of placental-derived exosomes to total exosomes in maternal plasma was determined by the ratio of PLAP+ exosomes to CD63+ exosomes. Results: The concentration of total exosomes significantly increased in early onset-PE and late onset-PE compared to N (≤33 weeks) and N (≥34 weeks). The relative concentration of placental-derived exosomes significantly increased in early onset-PE but decreased in late onset-PE compared to N. The ratio of PLAP+ exosomes to total number of exosomes significantly decreased in early onset-PE and late onset-PE. A positive correlation between total and placental-derived exosomes were obtained in N (≤33 weeks: Pearson's r = 0.60, ≥34 weeks: Pearson's r = 0.67) and early onset-PE (Pearson's r = 0.51, p < 0.05) with the inverse in late onset-PE (Pearson's r = -0.62, p < 0.01). Conclusion: The differences in the contribution of placental-derived exosomes to total exosomes in maternal circulation suggests a possible pathophysiological role of placental-derived exosomes in pre-eclampsia. (hide) EV-METRIC 33% (63rd 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 Blood plasma Sample origin Late-onset pre-eclampsia (> 34 weeks gestation) Focus vesicles exosome 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 (Differential) (ultra)centrifugation + Density cushion + Filtration Protein markers EV: PLAP/ CD63 non-EV: None Proteomics no Show all info Study aim Function/Biomarker Sample Species Homo sapiens Sample Type Blood plasma Sample Condition Late-onset pre-eclampsia (> 34 weeks gestation) Separation Method Differential ultracentrifugation centrifugation steps Between 800 g and 10,000 g Between 10,000 g and 50,000 g Between 100,000 g and 150,000 g Obtain an EV pellet : Yes Pelleting: time(min) 70 Pelleting: rotor type MLA-55 Pelleting: speed (g) 110000 Wash: volume per pellet (ml) Not specified Wash: time (min) 70 Wash: Rotor Type MLA-55 Wash: speed (g) 110000 Filtration steps 0.22µm or 0.2µm Density cushion Density medium Sucrose Characterization: Protein analysis Protein Concentration Method Lowry Western Blot Detected EV-associated proteins CD63 ELISA Detected EV-associated proteins CD63/ PLAP Flow cytometry Hardware adjustments Characterization: Particle analysis NTA Report type Mean Reported size (nm) 104.1 + - 7.65 nm EV concentration Yes

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