Characterizing String-of-Pearls Colloidal Silica by Multidetector Hydrodynamic Chromatography and Comparison to Multidetector Size-Exclusion Chromatography, Off-Line Multiangle Static Light Scattering, and Transmission Electron Microscopy

2011 ◽  
Vol 83 (8) ◽  
pp. 3068-3075 ◽  
Author(s):  
Amandaa K. Brewer ◽  
André M. Striegel
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Light Scattering ◽  
Size Exclusion Chromatography ◽  
Colloidal Silica ◽  
Static Light Scattering ◽  
Size Exclusion ◽  
Transmission Electron ◽  
Exclusion Chromatography ◽  
String Of Pearls

scholarly journals Comprehensive characterization and quantification of adeno associated vectors by size exclusion chromatography and multi angle light scattering

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nicole L. McIntosh ◽  
Geoffrey Y. Berguig ◽  
Omair A. Karim ◽  
Christa L. Cortesio ◽  
Rolando De Angelis ◽  
...  
Keyword(s):  
Light Scattering ◽  
Size Exclusion Chromatography ◽  
Molar Mass ◽  
Size Exclusion ◽  
Minimal Sample ◽  
Accuracy And Precision ◽  
Vector Genome ◽  
Exclusion Chromatography ◽  
Novel Applications

AbstractAdeno associated virus (AAV) capsids are a leading modality for in vivo gene delivery. Complete and precise characterization of capsid particles, including capsid and vector genome concentration, is necessary to safely and efficaciously dose patients. Size exclusion chromatography (SEC) coupled to multiangle light scattering (MALS) offers a straightforward approach to comprehensively characterize AAV capsids. The current study demonstrates that this method provides detailed AAV characterization information, including but not limited to aggregation profile, size-distribution, capsid content, capsid molar mass, encapsidated DNA molar mass, and total capsid and vector genome titer. Currently, multiple techniques are required to generate this information, with varying accuracy and precision. In the current study, a new series of equations for SEC-MALS are used in tandem with intrinsic properties of the capsids and encapsidated DNA to quantify multiple physical AAV attributes in one 20-min run with minimal sample manipulation, high accuracy, and high precision. These novel applications designate this well-established method as a powerful tool for product development and process analytics in future gene therapy programs.

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