Search > Results

You searched for: EV140056 (EV-TRACK ID)

Showing 1 - 1 of 1

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.
    • dUC = differential ultracentrifugation
    • 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
EV140056 1/1 Oryctolagus cuniculus Cell culture supernatant DG
dUC
Arellano-Anaya ZE 2014 56%

Study summary

Full title
All authors
Arellano-Anaya ZE, Huor A, Leblanc P, Lehmann S, Provansal M, Raposo G, Andréoletti O, Vilette D
Journal
Cell Mol Life Sci
Abstract
Cell-to-cell transfer of prions is a crucial step in the spreading of prion infection through infect (show more...)Cell-to-cell transfer of prions is a crucial step in the spreading of prion infection through infected tissue. At the cellular level, several distinct pathways including direct cell-cell contacts and release of various types of infectious extracellular vesicles have been described that may potentially lead to infection of naïve cells. The relative contribution of these pathways and whether they may vary depending on the prion strain and/or on the infected cell type are not yet known. In this study we used a single cell type (RK13) infected with three different prion strains. We showed that in each case, most of the extracellular prions resulted from active cell secretion through the exosomal pathway. Further, quantitative analysis of secreted infectivity indicated that the proportion of prions eventually secreted was dramatically dependent on the prion strain. Our data also highlight that infectious exosomes secreted from cultured cells might represent a biologically pertinent material for spiking experiments. Also discussed is the appealing possibility that abnormal PrP from different prion strains may differentially interact with the cellular machinery to promote secretion. (hide)
EV-METRIC
56% (89th 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
DNF
Focus vesicles
exosomes
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = differential ultracentrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
DG + dUC
Adj. k-factor
256 (pelleting) / 256 (washing)
Protein markers
EV: Alix/ EF1A/ Flotilin1
non-EV: Cell organelle protein
Proteomics
no
EV density (g/ml)
1.17-1.2
Show all info
Study aim
Function
Sample
Species
Oryctolagus cuniculus
Sample Type
Cell culture supernatant
EV-harvesting Medium
EV Depleted
Separation Method
Differential ultracentrifugation
dUC: 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
Pelleting: time(min)
75
Pelleting: rotor type
SW32
Pelleting: adjusted k-factor
256.0
Wash: Rotor Type
SW32
Wash: adjusted k-factor
256.0
Density gradient
Only used for validation of main results
1
Density medium
Sucrose
Lowest density fraction
0.25
Highest density fraction
2.5
Orientation
Bottom-up
Rotor type
SW32
Speed (g)
100000
Characterization: Protein analysis
Western Blot
Detected EV-associated proteins
Alix/ Flotilin1/ EF1A
Detected contaminants
Cell organelle protein
ELISA
Detected EV-associated proteins
EF1A
1 - 1 of 1