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You searched for: EV140012 (EV-TRACK ID)

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Experiment number
  • If needed, multiple experiments were identified in a single publication based on differing sample types, separation protocols and/or vesicle types of interest.
Species
  • Species of origin of the EVs.
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
    • IAF = immuno-affinity capture
Details EV-TRACK ID Experiment nr. Species Sample type Separation protocol First author Year EV-METRIC
EV140012 1/1 Homo sapiens Blood plasma (d)(U)C
DG
Filtration
Salomon C 2014 67%

Study summary

Full title
All authors
Salomon C, Torres MJ, Kobayashi M, Scholz-Romero K, Sobrevia L, Dobierzewska A, Illanes SE, Mitchell MD, Rice GE
Journal
PLoS One
Abstract
Studies completed to date provide persuasive evidence that placental cell-derived exosomes play a si (show more...)Studies completed to date provide persuasive evidence that placental cell-derived exosomes play a significant role in intercellular communication pathways that potentially contribute to placentation and development of materno-fetal vascular circulation. The aim of this study was to establish the gestational-age release profile and bioactivity of placental cell-derived exosome in maternal plasma. Plasma samples (n = 20 per pregnant group) were obtained from non-pregnant and pregnant women in the first (FT, 6-12 weeks), second (ST, 22-24 weeks) and third (TT, 32-38 weeks) trimester. The number of exosomes and placental exosome contribution were determined by quantifying immunoreactive exosomal CD63 and placenta-specific marker (PLAP), respectively. The effect of exosomes isolated from FT, ST and TT on endothelial cell migration were established using a real-time, live-cell imaging system (Incucyte). Exosome plasma concentration was more than 50-fold greater in pregnant women than in non-pregnant women (p<0.001). During normal healthy pregnancy, the number of exosomes present in maternal plasma increased significantly with gestational age by more that two-fold (p<0.001). Exosomes isolated from FT, ST and TT increased endothelial cell migration by 1.9±0.1, 1.6±0.2 and 1.3±0.1-fold, respectively compared to the control. Pregnancy is associated with a dramatic increase in the number of exosomes present in plasma and maternal plasma exosomes are bioactive. While the role of placental cell-derived exosome in regulating maternal and/or fetal vascular responses remains to be elucidated, changes in exosome profile may be of clinical utility in the diagnosis of placental dysfunction. (hide)
EV-METRIC
67% (94th 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
Blood plasma
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
Filtration
Adj. k-factor
53.28 (pelleting)
Protein markers
EV: CD81/ PLAP/ CD63/ CD9
non-EV:
Proteomics
no
EV density (g/ml)
1.13-1.19
Show all info
Study aim
Function
Sample
Species
Homo sapiens
Sample Type
Blood plasma
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 800 g and 10,000 g
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: time(min)
75
Pelleting: rotor type
T8100
Pelleting: adjusted k-factor
53.28
Wash: volume per pellet (ml)
30
Density gradient
Lowest density fraction
0.25
Highest density fraction
2.5
Orientation
Bottom-up
Speed (g)
200000
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Western Blot
Antibody details provided?
Yes
Antibody dilution provided?
Yes
Detected EV-associated proteins
CD63/ CD81/ CD9/ PLAP
ELISA
Antibody details provided?
Yes
Antibody dilution provided?
Yes
Detected EV-associated proteins
CD63/ CD81/ CD9/ PLAP
Characterization: Particle analysis
NTA
EM
EM-type
transmission EM
Image type
Wide-field
1 - 1 of 1
  • CM = Commercial method
  • dUC = differential ultracentrifugation
  • DG = density gradient
  • UF = ultrafiltration
  • SEC = size-exclusion chromatography
EV-TRACK ID
EV140012
species
Homo sapiens
sample type
Blood plasma
condition
NAY
separation protocol
(d)(U)C
DG
Filtration
Exp. nr.
1
EV-METRIC %
67