Get the confidence to move forward with SBI’s NTA Services
Because we know exosomes and we know how to deliver on end-to-end service
When you use SBI’s NTA-based Exosome Characterization Services, you can get a clearer picture of the quality of your exosomes in as little as two weeks and without needing to invest in your own NTA instrument. Send us your biofluid or prepared exosomes, choose conventional or fluorescent nanoparticle tracking analysis (NTA), and we’ll send back a report with the particle analysis data—the mean and mode diameter size, particle concentration, and video of the collected data, all gathered in triplicate.
Why choose SBI for NTA characterization of exosome preps?
Because we’ve been working with exosomes for years, and can reliably and reproducibly isolate exosomes from almost any biofluid—from plasma and tissue culture media to CSF, synovial fluid, and even mouse bronchial alveolar fluid (a challenging sample where exosomes are concerned!).
And because SBI is the only company that can provide fluorescent NTA using our proprietary ExoGlow™-NTA reagents (learn more about conventional and fluorescent NTA below, in the How It Works section).
Nanoparticle Tracking Analysis-based Exosome Characterization Services highlights:
- Understand the quality of your exosome preps
- Leverage SBI’s long-term experience working with exosomes
- Send us your biofluid or exosome prep and receive data in about 2 weeks
How it works
Ordering NTA-based Exosome Characterization Services is easy
Step 1. Contact us for a quote.
Step 2. Send us your biofluid or exosome prep.
Step 3. Get your data files in approximately 2 weeks.
SBI uses NTA measurements that rely on light scattering to extract particle size and the number of particles in a sample (Figure 1A). Briefly, a laser is directed at the sample and the particles in the sample scatter the light, which is imaged by a camera attached to a microscope and operating at 30 frames per second. The NTA software collects data on multiple particles simultaneously, and calculates the hydrodynamic diameter of each particle using the Stokes-Einstein equation.
What is fluorescent NTA and how is it different from conventional NTA?
Making a great exosome research tool even better, SBI has developed ExoGlow-NTA, a proprietary dye for fluorescent NTA* that enables data collection for only the extracellular vesicles present in a heterogenous sample. The result is more accurate EV/exosomal NanoSight data that ignores protein aggregates, membrane fractions, and other background particles to provide EV-specific particle size and concentration.
The ExoGlow-NTA reagent works by binding specifically and efficiently to the membranes of intact EVs, including exosomes. During data collection for fluorescent NTA, only the light scattering from fluorescently-labeled particles is obtained, resulting in EV-specific signal that ignores membrane fragments, protein aggregates, and other background particles since they do not bind the ExoGlow-NTA dye (Figure 1B). Thus, with the ExoGlow-NTA Kit, the data delivered by the NTA analysis more accurately reports on the EVs in your sample, rather than all of the particles in your sample.
Get Better NTA data on EVs using ExoGlow-NTA
SBI’s ExoGlow-NTA Fluorescent Labeling Kit delivers highly accurate EV quantitation in a quick and easy workflow. The proprietary dye offers highly efficient labeling (Figure 2), very low background (Figure 3), and is compatible with a wide range of EV isolation techniques (Figure 4).