Subscribe to Newsletter

Gene Therapy Research Characterization Using DLS and Zeta Potential

The use of zeta potential and DLS measurements in gene therapy research

Abstract

The use of antibodies, either covalently attached onto the surface of neutral and anionic liposomes or used in a complex, is also being investigated. Zeta potential measurements are being used to develop the most efficient formulations of liposomes, peptides, DNA complexes for transfection studies in vivo and in vitro.

Introduction

Gene therapy is the process by which genetic material is delivered, by means of a vector, to patients for a therapeutic purpose. Vectors are delivery vehicles - usually a virus or a liposome - used to transport the genetic material to target cells in the body.

Both cationic and anionic liposomes are currently being investigated as vectors for gene therapy and their effectiveness in transfection is being studied by research groups and pharmaceutical companies.

Cationic liposomes (positively charged) are complexed with DNA (plasmids) Fig. 1. The liposome:DNA ratio is seen to be essential for optimal transfection.

 

Zeta potential measurements can be used to optimise the ratio required for particular liposomes with various plasmids Fig 2. The plot also shows the zaverage diameters of the complex formed at various plasmid:liposome ratios obtained from photon correlation spectroscopy (PCS) measurements. When the complex has either a high negative or positive zeta potential, the size is around 90nm.

Read the full article now

Log in or register to read this article in full and gain access to The Analytical Scientist’s entire content archive. It’s FREE!

Login
Receive content, products, events as well as relevant industry updates from The Analytical Scientist and its sponsors.
Stay up to date with our other newsletters and sponsors information, tailored specifically to the fields you are interested in

When you click “Subscribe” we will email you a link, which you must click to verify the email address above and activate your subscription. If you do not receive this email, please contact us at [email protected].
If you wish to unsubscribe, you can update your preferences at any point.

Register to The Analytical Scientist

Register to access our FREE online portfolio, request the magazine in print and manage your preferences.

You will benefit from:
  • Unlimited access to ALL articles
  • News, interviews & opinions from leading industry experts
  • Receive print (and PDF) copies of The Analytical Scientist magazine

Register