EV ANALYSIS

See the EVs others miss.

Uncover combination biomarker signatures for earlier cancer detection.

THE IMPORTANCE OF EVs
Illustration of an extracellular vesicle carrying surface proteins, nucleic acids, and other molecular biomarkers
Xu et al. (2021) Front. Cardiovasc. Med.

Combination biomarkers

EVs carry multiplexed molecular signatures with potential utility for early cancer detection via liquid biopsy.

THE CHALLENGE

Most EVs go unseen

Most EVs are <100 nm—below the detection limits of conventional macrofluidic nanoscale flow cytometers.

THE dFC SOLUTION
EV size and PE copy-number distribution showing EVs below conventional nanoscale flow cytometer detection limits

dFC detects even the smallest EVs

100% single-fluorophore detection efficiency enables detection far below conventional limits.

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SINGLE-PARTICLE ANALYSIS

Single-EV analysis by dFC:

  • 12-channel biomarker analysisSimultaneous detection of multiple EV surface and cargo markers.
  • EV phenotypingIdentify and characterize distinct EV subpopulations.
  • Absolute concentrations of EV subpopulationsDirect, quantitative measurements.
  • Absolute quantitation of biomarker copy numbersSingle-molecule sensitivity enables copy number measurements by digital deconvolution.
  • EV sizing based on a membrane dyeDetermine EV size distributions using a lipid membrane dye.

SINGLE-PARTICLE ANALYSIS

Phenotyping individual EVs

With 4 excitation lasers and 12 color channels, dFC can unmask the biological heterogeneity of biomedical nanoparticles such as EVs in a single experiment—down to the smallest nanoparticle.

Video preview
Eight-marker single-EV heatmap with an expanded view of EVs 500–600

SINGLE-PARTICLE ANALYSIS

Absolute concentration measurements

Direct counting of fluorescent antibodies or EV subpopulations

By detecting every molecule that flows through the channel, dFC achieves absolute quantitation of the concentration of fluorescently-labeled biomolecules or EV subpopulations.

Tumor-cell-derived EV subpopulation concentrations and measured EV concentration across dilution factors

SINGLE-PARTICLE ANALYSIS

Absolute quantitation of biomarkers

The ultra-high sensitivity of dFC enables single-molecule counting of protein and nucleic acid biomarker copy numbers associated with each EV—without external calibration.

Video preview
Watch how single-EV biomarker copy numbers are calculated using digital deconvolution

A CLOSER LOOK

Follow an EV through the dFC PanFlow™ Chip.

Video preview

Eight-marker EV heatmap

Eight-marker single-EV heatmap with an expanded view of EVs 500–600