Polymer nanoparticles used as drug carriers characterized using Nanoparticle Tracking Analysis
In the world of pharmaceutical sciences, a detailed and full characterization of particles synthesized as drug carrier systems is indispensable. The particle size is a crucial parameter to be monitored as this will affect the stability of formulations. It will also impact with respect to size-dependent effects in biological experiments, such as the uptake of drug systems by cells.
Nanoparticle Tracking Analysis is used as a complementary tool to a Malvern Zetasizer to characterize the nanoparticles prepared by Dr Christian Ruge, a research scientist in the Department of Biopharmaceutics and Pharmaceutical Technology in the group of Professor Claus-Michael Lehr. The particles are mainly polymer-based and typically in the size range from 100 nm to 400 nm. Especially when studying samples of moderate polydispersity (i.e. with a polydispersity index, PDI, of larger than 0.2), the group uses the NanoSight system to measure the preparations to identify particle populations which are not resolved by the Malvern system.
Talking of the benefits of using NTA rather than techniques such as scanning electron microscopy, SEM, or dynamic light scattering, DLS, Dr Ruge commented, "The fact that the system is performing particle-by-particle-based measurements is a huge advantage, especially in terms of its resolving power. The fact that the instrument gives a concentration value is very useful. I feel that "visualization" of the particles based on their scattered light gives more "insight" as to the sample and its behaviour. I personally find that it is more fun working with the NanoSight instrument compared to the Zetasizer. The interaction with the instrument and being able to visualize the individual particles makes it less of a "black box" instrument and more "interesting" for me as a scientist to use. Also, I have found that during demonstrations for students, the NanoSight appears to be more transparent and thus better suited for educational purposes."
Topics
Organizations
Other news from the department research and development
These products might interest you
NANOPHOX CS by Sympatec
Particle size analysis in the nano range: Analyzing high concentrations with ease
Reliable results without time-consuming sample preparation
Eclipse by Wyatt Technology
FFF-MALS system for separation and characterization of macromolecules and nanoparticles
The latest and most innovative FFF system designed for highest usability, robustness and data quality
DynaPro Plate Reader III by Wyatt Technology
Screening of biopharmaceuticals and proteins with high-throughput dynamic light scattering (DLS)
Efficiently characterize your sample quality and stability from lead discovery to quality control
Get the chemical industry in your inbox
From now on, don't miss a thing: Our newsletter for the chemical industry, analytics, lab technology and process engineering brings you up to date every Tuesday and Thursday. The latest industry news, product highlights and innovations - compact and easy to understand in your inbox. Researched by us so you don't have to.