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You searched for: EV200147 (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
Details EV-TRACK ID Experiment nr. Species Sample type separation protocol First author Year EV-METRIC
EV200147 2/3 Homo sapiens Serum "Precipitation
(Differential) (ultra)centrifugation
Density gradient
Filtration"
Shen, Li 2018 44%

Study summary

Full title
All authors
Li Shen, Yujing Li, Ruotian Li, Zhenyu Diao, Muyi Yany, Mengfei Wu, Haixiang Sun, Guijun Yan, Yali Hu
Journal
Int J Mol Med
Abstract
Preeclampsia (PE) is considered to be initiated by abnormal placentation in early pregnancy and resu (show more...)Preeclampsia (PE) is considered to be initiated by abnormal placentation in early pregnancy and results in systemic endothelial cell dysfunction in the second or third trimester. MicroRNAs (miRs) expressed in the human placenta can be secreted into maternal circulation via exosomes, which are secreted extracellular vesicles that serve important roles in intercellular communication. The present study hypothesized that upregulation of placenta‑associated serum exosomal miR‑155 from patients with PE may suppress endothelial nitric oxide synthase (eNOS) expression in endothelial cells. The results demonstrated that placenta‑associated serum exosomes from patients with PE decreased nitric oxide (NO) production and eNOS expression in primary human umbilical vein endothelial cells (HUVECs). Subsequently, an upregulation of placenta‑associated serum exosomal miR‑155 was detected in patients with PE compared with in gestational age‑matched normal pregnant women. In addition, the results demonstrated that overexpression of exosomal miR‑155 from BeWo cells was internalized into HUVECs, and was able to suppress eNOS expression by targeting its 3'‑untranslated region. The results of the present study indicated that placenta‑associated serum exosomes may inhibit eNOS expression in endothelial cell during PE development in humans, and this phenomenon may be partly due to increased miR‑155 expression in placenta‑associated serum exosomes. (hide)
EV-METRIC
44% (88th 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
Serum
Sample origin
Healthy pregnant
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
"Precipitation + (Differential) (ultra)centrifugation + Density gradient + Filtration"
Protein markers
EV: "CD81/ PLAP/ CD63"
non-EV: None
Proteomics
no
EV density (g/ml)
1.09
Show all info
Study aim
Function
Sample
Species
Homo sapiens
Sample Type
Serum
Sample Condition
Healthy pregnant
Separation Method
Differential ultracentrifugation
centrifugation steps
Between 800 g and 10,000 g
Density gradient
Density medium
Sucrose
Type
Not specified
Number of initial discontinuous layers
Not specified
Lowest density fraction
Not specified
Highest density fraction
Not specified
Total gradient volume, incl. sample (mL)
Not specified
Sample volume (mL)
Not spec
Orientation
Top-down
Rotor type
Not specified
Speed (g)
100000
Duration (min)
300
Fraction volume (mL)
Not specified
Fraction processing
Precipitation of all proteins/vesicles
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Western Blot
Detected EV-associated proteins
"CD63/ PLAP/ CD81"
Flow cytometry
Hardware adjustments
Characterization: Particle analysis
DLS
Report type
Mean
Reported size (nm)
73.74
EM
EM-type
Transmission-EM
Image type
Close-up
EV200147 1/3 Homo sapiens Cell culture supernatant (Differential) (ultra)centrifugation Shen, Li 2018 33%

Study summary

Full title
All authors
Li Shen, Yujing Li, Ruotian Li, Zhenyu Diao, Muyi Yany, Mengfei Wu, Haixiang Sun, Guijun Yan, Yali Hu
Journal
Int J Mol Med
Abstract
Preeclampsia (PE) is considered to be initiated by abnormal placentation in early pregnancy and resu (show more...)Preeclampsia (PE) is considered to be initiated by abnormal placentation in early pregnancy and results in systemic endothelial cell dysfunction in the second or third trimester. MicroRNAs (miRs) expressed in the human placenta can be secreted into maternal circulation via exosomes, which are secreted extracellular vesicles that serve important roles in intercellular communication. The present study hypothesized that upregulation of placenta‑associated serum exosomal miR‑155 from patients with PE may suppress endothelial nitric oxide synthase (eNOS) expression in endothelial cells. The results demonstrated that placenta‑associated serum exosomes from patients with PE decreased nitric oxide (NO) production and eNOS expression in primary human umbilical vein endothelial cells (HUVECs). Subsequently, an upregulation of placenta‑associated serum exosomal miR‑155 was detected in patients with PE compared with in gestational age‑matched normal pregnant women. In addition, the results demonstrated that overexpression of exosomal miR‑155 from BeWo cells was internalized into HUVECs, and was able to suppress eNOS expression by targeting its 3'‑untranslated region. The results of the present study indicated that placenta‑associated serum exosomes may inhibit eNOS expression in endothelial cell during PE development in humans, and this phenomenon may be partly due to increased miR‑155 expression in placenta‑associated serum exosomes. (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
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
Protein markers
EV: "CD81/ PLAP/ CD63"
non-EV: None
Proteomics
no
Show all info
Study aim
Function
Sample
Species
Homo sapiens
Sample Type
Cell culture supernatant
Sample Condition
Control condition
EV-producing cells
BeWo
EV-harvesting Medium
EV-depleted medium
Preparation of EDS
Not specified
Separation Method
Differential ultracentrifugation
centrifugation steps
Below or equal to 800 g
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
Not specified
Pelleting: speed (g)
100000
Wash: time (min)
70
Wash: Rotor Type
Not specified
Wash: speed (g)
100000
Characterization: Protein analysis
Protein Concentration Method
Not determined
Western Blot
Detected EV-associated proteins
"CD63/ PLAP/ CD81"
Flow cytometry
Hardware adjustments
Characterization: Particle analysis
DLS
Report type
Not Reported
EM
EM-type
Transmission-EM
Image type
Close-up
EV200147 3/3 Homo sapiens Serum "Precipitation
(Differential) (ultra)centrifugation
Density gradient
Filtration"
Shen, Li 2018 25%

Study summary

Full title
All authors
Li Shen, Yujing Li, Ruotian Li, Zhenyu Diao, Muyi Yany, Mengfei Wu, Haixiang Sun, Guijun Yan, Yali Hu
Journal
Int J Mol Med
Abstract
Preeclampsia (PE) is considered to be initiated by abnormal placentation in early pregnancy and resu (show more...)Preeclampsia (PE) is considered to be initiated by abnormal placentation in early pregnancy and results in systemic endothelial cell dysfunction in the second or third trimester. MicroRNAs (miRs) expressed in the human placenta can be secreted into maternal circulation via exosomes, which are secreted extracellular vesicles that serve important roles in intercellular communication. The present study hypothesized that upregulation of placenta‑associated serum exosomal miR‑155 from patients with PE may suppress endothelial nitric oxide synthase (eNOS) expression in endothelial cells. The results demonstrated that placenta‑associated serum exosomes from patients with PE decreased nitric oxide (NO) production and eNOS expression in primary human umbilical vein endothelial cells (HUVECs). Subsequently, an upregulation of placenta‑associated serum exosomal miR‑155 was detected in patients with PE compared with in gestational age‑matched normal pregnant women. In addition, the results demonstrated that overexpression of exosomal miR‑155 from BeWo cells was internalized into HUVECs, and was able to suppress eNOS expression by targeting its 3'‑untranslated region. The results of the present study indicated that placenta‑associated serum exosomes may inhibit eNOS expression in endothelial cell during PE development in humans, and this phenomenon may be partly due to increased miR‑155 expression in placenta‑associated serum exosomes. (hide)
EV-METRIC
25% (71st 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
Serum
Sample origin
Pre-eclampsia
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
"Precipitation + (Differential) (ultra)centrifugation + Density gradient + Filtration"
Protein markers
EV: None
non-EV: None
Proteomics
no
EV density (g/ml)
1.09
Show all info
Study aim
Function
Sample
Species
Homo sapiens
Sample Type
Serum
Sample Condition
Pre-eclampsia
Separation Method
Differential ultracentrifugation
centrifugation steps
Between 800 g and 10,000 g
Density gradient
Density medium
Sucrose
Type
Not specified
Number of initial discontinuous layers
Not specified
Lowest density fraction
Not specified
Highest density fraction
Not specified
Total gradient volume, incl. sample (mL)
Not specified
Sample volume (mL)
Not spec
Orientation
Top-down
Rotor type
Not specified
Speed (g)
100000
Duration (min)
300
Fraction volume (mL)
Not specified
Fraction processing
Precipitation of all proteins/vesicles
Filtration steps
0.22µm or 0.2µm
Protein Concentration Method
Not determined
Flow cytometry
Hardware adjustments
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