Search > Results

You searched for: EV110030 (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, isolation protocols and/or vesicle types of interest.
Species
  • Species of origin of the EVs.
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
Details EV-TRACK ID Experiment nr. Species Sample type Isolation protocol First author Year EV-METRIC
EV110030 1/1 Homo sapiens Cell culture supernatant 0.2 µm filter
dUC
UF
Adamczyk KA 2011 22%

Study summary

Full title
All authors
Adamczyk KA, Klein-Scory S, Tehrani MM, Warnken U, Schmiegel W, Schnölzer M, Schwarte-Waldhoff I
Journal
Life Sci
Abstract
AIMS: Members of the epidermal growth factor receptor (EGFR) family represent validated targets for (show more...)AIMS: Members of the epidermal growth factor receptor (EGFR) family represent validated targets for anti-cancer therapy and EGFR inhibitors have also shown efficacy in pancreatic carcinoma. We here described in detail molecular forms of the EGF receptor released by pancreatic cancer cells. We found peptides specific for the EGFR in the secretomes of five pancreatic cancer cell lines. Secretomes from cultured cancer cells are widely used as sources for serum biomarker discovery. MAIN METHODS: The detailed analysis of EGFR forms in secretomes of human pancreatic cancer cells is a compilation of results from mass spectrometry (MS) and Western blotting with intracellular and extracellular domain specific antibodies. KEY FINDINGS: Pancreatic cancer cells secrete a 110 kDa soluble form of the EGFR (sEGFR) representing the ligand binding extracellular EGFR domains and presumably released by ectodomain shedding. At the same time, as constituents of exosomes, the EGFR is released as full-length intact receptor (170 kDa) and as a 65 kDa processed form, the C-terminal remnant fragment that corresponds to the intracellular kinase domain. SIGNIFICANCE: The detailed characterization of diverse EGFR forms released by pancreatic cancer cells in vitro and presumably in vivo bears important implications for functional studies, for the validation of soluble EGFR as a serum biomarker and for the design of targeted therapies. (hide)
EV-METRIC
22% (50th 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
exosomes
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
0.2 µm filter + dUC + UF
Adj. k-factor
105 (pelleting)
Protein markers
EV: Alix/ CD63/ CD9/ Syntenin
non-EV: None
Proteomics
yes
Show all info
Study aim
Function
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 100,000 g and 150,000 g
Pelleting: time(min)
90
Pelleting: rotor type
T890
Pelleting: adjusted k-factor
105.0
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Western Blot
Detected EV-associated proteins
Alix/ CD63/ CD9/ Syntenin
1 - 1 of 1