Integrated Method for Purification and Single-Particle Characterization of Lentiviral Vector Systems by Size Exclusion Chromatography and Tunable Resistive Pulse Sensing
Artikel i vetenskaplig tidskrift, 2017

Elements derived from lentiviral particles such as viral vectors or virus-like particles are commonly used for biotechnological and biomedical applications, for example in mammalian protein expression, gene delivery or therapy, and vaccine development. Preparations of high purity are necessary in most cases, especially for clinical applications. For purification, a wide range of methods are available, from density gradient centrifugation to affinity chromatography. In this study we have employed size exclusion columns specifically designed for the easy purification of extracellular vesicles including exosomes. In addition to viral marker protein and total protein analysis, a well-established single-particle characterization technology, termed tunable resistive pulse sensing, was employed to analyze fractions of highest particle load and purity and characterize the preparations by size and surface charge/electrophoretic mobility. With this study, we propose an integrated platform combining size exclusion chromatography and tunable resistive pulse sensing for monitoring production and purification of viral particles.

Virus Counter

like particles

Extracellular Vesicles



Extracellular vesicles

Viral vectors


Gene therapy

Nanoparticle Tracking Analysis


Susanne Heider

Chalmers, Biologi och bioteknik, Kemisk biologi

J. Muzard

Izon Science

M. Zaruba

University of Veterinary Medicine Vienna

C. Metzner

University of Veterinary Medicine Vienna

Molecular Biotechnology

1073-6085 (ISSN)

Vol. 59 7 251-259


Medicinska grundvetenskaper

Klinisk medicin

Biologiska vetenskaper



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