Journal
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
Volume 164, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2023.117088
Keywords
Recombinant adeno-associated virus; Full capsid; Empty capsid; Viral proteins; Ion exchange chromatography; Reversed phase liquid chromatography; Hydrophilic interaction chromatography; Size exclusion chromatography
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In recent years, there has been a significant increase in the biopharmaceutical industry's interest in gene therapy modalities. Fit-for-purpose analytical methods are crucial to ensure the quality of gene therapy products during manufacturing and upstream/downstream process. However, the characterization of these products remains challenging due to their large size, structural complexity, heterogeneity, potential instability, and limited sample availability. This review focuses on the use of liquid chromatography (LC) based methods for analyzing adeno-associated virus (AAV) vector-based gene therapy products, highlighting their advantages, drawbacks, and unique capabilities in the analysis of AAV gene transfer vehicles and their impurities.
In recent years, the biopharmaceutical industry's interest in gene therapy modalities has increased dramatically. To warrant their quality during manufacturing and upstream/downstream process, fit-for-purpose analytical methods play a crucial role in the overall control strategy. However, characterization of gene therapy products remains challenging due to their large size, structural complexity, heteroge-neity, potential instability, and limited sample availability. In addressing some of these challenges with innovative approaches, liquid chromatography (LC) based methods have become an integral part of the currently used analytical toolbox. This review focuses on both established methods and emerging trends in the LC analysis of adeno-associated virus (AVV) vector-based gene therapy products. Each method is discussed to highlight their advantages, drawbacks, and unique capabilities in the analysis of AAV gene transfer vehicles and their corresponding impurities. Taken together, this review provides guidance on the selection of LC-based methods for routine testing and extended characterization of gene therapy products.(c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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