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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
EV190103 1/1 Homo sapiens Cell culture supernatant DG
(d)(U)C
Dynabeads CD9, CD63, CD81
Xiaoju Zhou 2020 100%

Study summary

Full title
All authors
Xiaoju Zhou, Brooke A Brown, Amanda P Siegel, Mohamed El Masry, Xuyao Zeng, Woran Song, Amitava Das, Puneet Khandelwal, Andrew Clark, Kanhaiya Singh, Poornachander R Guda, Mahadeo Gorain, Lava Timsina, Yi Xuan, Stephen C Jacobson, Milos V Novotny, Sashwati Roy, Mangilal Agarwal, Robert J Lee, Chandan K Sen, David E Clemmer, Subhadip Ghatak
Journal
ACS Nano
Abstract
Bidirectional cell-cell communication involving exosome-borne cargo such as miRNA, has emerged as a (show more...)Bidirectional cell-cell communication involving exosome-borne cargo such as miRNA, has emerged as a critical mechanism for wound healing. Unlike other shedding vesicles, exosomes selectively package miRNA by SUMOylation of heterogeneous nuclear ribonucleoproteinA2B1 (hnRNPA2B1). In this work, we elucidate the significance of exosome in keratinocyte-macrophage crosstalk following injury. Keratinocyte-derived exosomes were genetically labeled with GFP reporter (Exoκ-GFP) using tissue nanotransfection and were isolated from dorsal murine skin and wound-edge tissue by affinity selection using magnetic beads. Surface N-glycans of Exoκ-GFP were also characterized. Unlike skin exosome, wound-edge Exoκ-GFP demonstrated characteristic N-glycan ions with abundance of low base pair RNA and were selectively engulfed by wound-macrophages (ωmϕ) in granulation tissue. In vitro addition of wound-edge Exoκ-GFP to proinflammatory ωmϕ resulted in conversion to a proresolution phenotype. To selectively inhibit miRNA packaging within Exoκ-GFP in vivo, pH-responsive keratinocyte-targeted siRNA-hnRNPA2B1 functionalized lipid nanoparticles (TLNPκ) were designed with 94.3% encapsulation efficiency. Application of TLNPκ/si-hnRNPA2B1 to murine dorsal wound-edge significantly inhibited expression of hnRNPA2B1 by 80% in epidermis compared to TLNPκ/si-control group. Although no significant difference in wound closure or re-epithelialization was observed, TLNPκ/si-hnRNPA2B1 treated group showed significant increase in ωmϕ displaying proinflammatory markers in the granulation tissue at day 10 post-wounding compared to TLNPκ/si-control group. Furthermore, TLNPκ/si-hnRNPA2B1 treated mice showed impaired barrier function with diminished expression of epithelial junctional proteins, lending credence to the notion that unresolved inflammation results in leaky skin. This work provides insight wherein Exoκ-GFP are recognized as a major contributor that regulates macrophage trafficking and epithelial barrier properties post-injury. (hide)
EV-METRIC
100% (99th 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
DG + (d)(U)C + Dynabeads CD9, CD63, CD81
Protein markers
EV: TSG101/ Alix
non-EV:
Proteomics
no
EV density (g/ml)
1.16
Show all info
Study aim
Function/Biogenesis/cargo sorting/Mechanism of uptake/transfer
Sample
Species
Homo sapiens
Sample Type
Cell culture supernatant
Sample Condition
Control condition
EV-producing cells
HaCaT
EV-harvesting Medium
EV-depleted medium
Preparation of EDS
Commercial EDS
Cell viability
Yes
Cell viability (%)
Yes
Separation Method
Differential ultracentrifugation
centrifugation steps
Between 800 g and 10,000 g
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Obtain an EV pellet :
Yes
Pelleting: time(min)
120
Pelleting: rotor type
TLA-120.2
Pelleting: speed (g)
245000
Wash: volume per pellet (ml)
0.5
Wash: time (min)
120
Wash: Rotor Type
TLA-120.2
Wash: speed (g)
245000
Density gradient
Only used for validation of main results
Yes
Density medium
Sucrose
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0.4M
Highest density fraction
2.5M
Total gradient volume, incl. sample (mL)
1.05
Sample volume (mL)
0.05
Orientation
Top-down
Rotor type
TLA-120.2
Speed (g)
100000
Duration (min)
1080
Fraction volume (mL)
0.1
Fraction processing
Centrifugation
Pelleting: volume per fraction
1
Pelleting: duration (min)
120
Pelleting: rotor type
TLA-120.2
Pelleting: speed (g)
245000
Commercial kit
Dynabeads CD9, CD63, CD81
Characterization: Protein analysis
Protein Concentration Method
microBCA
Western Blot
Detected EV-associated proteins
TSG101/ Alix/ FLOT1/ HSP90
Detected contaminants
Prohibitin
Not detected contaminants
GM130
Flow cytometry specific beads
Detected EV-associated proteins
TSG101
Other 1
Fluorescent anisotropy
Detected EV-associated proteins
TSG101
Characterization: Particle analysis
NTA
Report type
Modus
Reported size (nm)
102
EV concentration
Yes
Particle yield
Yes, as number of particles per milliliter of starting sample 3.20E+07
EM
EM-type
Scanning-EM
Image type
Wide-field
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