Intrinsic Differential Scanning Fluorimetry for Fast and Easy Identification of Adeno-Associated Virus Serotypes

Rieser, Ruth; Penaud-Budloo, Magalie; Bouzelha, Mohammed; Rossi, Axel; Menzen, Tim; Biel, Martin; Buening, Hildegard; Ayuso, Eduard; Winter, Gerhard und Michalakis, Stylianos (2020): Intrinsic Differential Scanning Fluorimetry for Fast and Easy Identification of Adeno-Associated Virus Serotypes. In: Journal of Pharmaceutical Sciences, Bd. 109, Nr. 1: S. 854-862

Abstract

Recombinant adeno-associated virus (AAV) vectors have evolved as the most promising technology for gene therapy due to their good safety profile, high transduction efficacy, and long-term gene expression in non-dividing cells. AAV-based gene therapy holds great promise for treating genetic disorders like inherited blindness, muscular atrophy, or bleeding disorders. Multiple naturally occurring and engineered AAV serotypes exist, which differ in capsid sequence and as a consequence in cellular tropism. Individual AAV capsids differ in thermal stability and have a characteristic melting temperature (T-m), which enables serotype-specific discrimination of AAV vectors. Differential scanning fluorimetry (DSF) combined with a dye-like SYPRO Orange (SO-DSF), which binds to hydrophobic regions of unfolded proteins, has been successfully applied to determine the T-m, of AAV capsids. Here, we present DSF measurement of intrinsic fluorescence signal (iDSF) as a simple alternative method for determination of AAV capsid T-m. The study demonstrates that DSF measurement of intrinsic fluorescence signal is a simple, accurate, and rapid alternative to SO-DSF, which enables characterization of AAV capsid stability with excellent precision and without the need of SO or any other dye. (C) 2020 Published by Elsevier Inc. on behalf of the American Pharmacists Association.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 0022-3549
• Sprache: Englisch