1
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Suk Lee Y, Lee J, Fang K, Gee GV, Rogers B, McNally D, Yoon S. Separation of full, empty, and partial adeno-associated virus capsids via anion-exchange chromatography with continuous recycling and accumulation. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1242:124206. [PMID: 38908134 DOI: 10.1016/j.jchromb.2024.124206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/28/2024] [Accepted: 06/11/2024] [Indexed: 06/24/2024]
Abstract
The field of recombinant adeno-associated virus (rAAV) gene therapy has attracted increasing attention over decades. Within the ongoing challenges of rAAV manufacturing, the co-production of impurities, such as empty and partial capsids containing no or truncated transgenes, poses a significant challenge. Due to their potential impact on drug efficacy and clinical safety, it is imperative to conduct comprehensive monitoring and characterization of these impurities prior to the release of the final gene therapy product. Nevertheless, existing analytical techniques encounter notable limitations, encompassing low throughput, long turnaround times, high sample consumption, and/or complicated data analysis. Chromatography-based analytical methods are recognized for their current Good Manufacturing Practice (cGMP) alignment, high repeatability, reproducibility, low limit of detection, and rapid turnaround times. Despite these advantages, current anion exchange high pressure liquid chromatography (AEX-HPLC) methods struggle with baseline separation of partial capsids from full and empty capsids, resulting in inaccurate full-to-empty capsid ratio, as partial capsids are obscured within peaks corresponding to empty and full capsids. In this study, we present a unique analytical AEX method designed to characterize not only empty and full capsids but also partial capsids. This method utilizes continuous N-Rich chromatography with recycling between two identical AEX columns for the accumulation and isolation of partial capsids. The development process is comprehensively discussed, covering the preparation of reference materials representing full (rAAV-LacZ), partial (rAAV-GFP), and empty (rAAV-empty) capsids, N-rich method development, fraction analysis, determination of fluorescence response factors between capsid variants, and validation through comparison with other comparative techniques.
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Affiliation(s)
- Yong Suk Lee
- Department of Pharmaceutical Sciences, University of Massachusetts Lowell, Lowell, MA 01854, USA
| | - Jaeweon Lee
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA 01854, USA
| | - Kun Fang
- MassBiologics, University of Massachusetts Chan Medical School, Mattapan, MA 02126, USA
| | - Gretchen V Gee
- MassBiologics, University of Massachusetts Chan Medical School, Mattapan, MA 02126, USA
| | - Benjamin Rogers
- MassBiologics, University of Massachusetts Chan Medical School, Mattapan, MA 02126, USA
| | - David McNally
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA 01854, USA; MassBiologics, University of Massachusetts Chan Medical School, Mattapan, MA 02126, USA
| | - Seongkyu Yoon
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA 01854, USA.
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2
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Zhao H, Sousa AA, Schuck P. Flotation Coefficient Distributions of Lipid Nanoparticles by Sedimentation Velocity Analytical Ultracentrifugation. ACS NANO 2024. [PMID: 38967176 DOI: 10.1021/acsnano.4c05322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
The robust characterization of lipid nanoparticles (LNPs) encapsulating therapeutics or vaccines is an important and multifaceted translational problem. Sedimentation velocity analytical ultracentrifugation (SV-AUC) has proven to be a powerful approach in the characterization of size-distribution, interactions, and composition of various types of nanoparticles across a large size range, including metal nanoparticles (NPs), polymeric NPs, and also nucleic acid loaded viral capsids. Similar potential of SV-AUC can be expected for the characterization of LNPs, but is hindered by the flotation of LNPs being incompatible with common sedimentation analysis models. To address this gap, we developed a high-resolution, diffusion-deconvoluted sedimentation/flotation distribution analysis approach analogous to the most widely used sedimentation analysis model c(s). The approach takes advantage of independent measurements of the average particle size or diffusion coefficient, which can be conveniently determined, for example, by dynamic light scattering (DLS). We demonstrate the application to an experimental model of extruded liposomes as well as a commercial LNP product and discuss experimental potential and limitations of SV-AUC. The method is implemented analogously to the sedimentation models in the free, widely used SEDFIT software.
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Affiliation(s)
- Huaying Zhao
- Laboratory of Dynamics of Macromolecular Assembly, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Alioscka A Sousa
- Department of Biochemistry, Federal University of São Paulo, São Paulo, SP 04044, Brazil
| | - Peter Schuck
- Laboratory of Dynamics of Macromolecular Assembly, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
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3
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Som M, Gikanga B, Kanapuram V, Yadav S. Drug product Formulation and Fill/Finish Manufacturing Process Considerations for AAV-Based Genomic Medicines. J Pharm Sci 2024; 113:1711-1725. [PMID: 38570073 DOI: 10.1016/j.xphs.2024.03.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/05/2024]
Abstract
Adeno-associated viruses (AAVs) have become the delivery medium of choice for a variety of genomic medicine applications i.e., gene therapy, gene editing/regulation, and ex-vivo cell therapy. AAVs are protein-DNA complexes which have unique stability characteristics that are susceptible to various stress exposure conditions commonly seen in the drug product (DP) life cycle. This review takes a comprehensive look at AAV DP formulation and process development considerations that could impact critical quality attributes (CQAs) during manufacturing, packaging, shipping, and clinical use. Additional aspects related to AAV development reviewed herein are: (1) Different AAV serotypes with unique protein sequences and charge characteristics potentially leading to discrete stability profiles; (2) Manufacturing process challenges and optimization efforts to improve yield, recovery and purity especially during early development activities; and (3) Defining and identifying CQAs with analytical methods which are constantly evolving and present unique characterization challenges for AAV-based products.
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Affiliation(s)
- Madhura Som
- Sangamo Therapeutics, 7000 Marina Boulevard, Brisbane, CA 94005, United States.
| | - Benson Gikanga
- Sangamo Therapeutics, 7000 Marina Boulevard, Brisbane, CA 94005, United States
| | - Varna Kanapuram
- Sangamo Therapeutics, 7000 Marina Boulevard, Brisbane, CA 94005, United States
| | - Sandeep Yadav
- Sangamo Therapeutics, 7000 Marina Boulevard, Brisbane, CA 94005, United States.
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4
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Berkowitz SA, Larson N, Bou-Assaf G, Laue T. Rapid high-resolution size distribution protocol for adeno-associated virus using high speed SV-AUC. Anal Biochem 2024; 689:115482. [PMID: 38342199 DOI: 10.1016/j.ab.2024.115482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/26/2023] [Accepted: 02/08/2024] [Indexed: 02/13/2024]
Abstract
Simulated SV-AUC data for an adeno-associated virus (AAV) sample consisting of four components having closely spaced sedimentation coefficients were used to develop a high-speed protocol that optimized the size distribution analysis resolution. The resulting high speed (45K rpm) SV-AUC (hs-SV-AUC) protocol poses several experimental challenges: 1) the need for rapid data acquisition, 2) increased potential for optical artifacts from steep and fast moving boundaries and 3) the increased potential for convection. To overcome these challenges the protocol uses interference detection at low temperatures and data that are confined to a limited radial-time window. In addition to providing higher resolution AAV SV-AUC data and very short run times (<20 min after temperature equilibration), the need to match the sample and reference solvent composition and meniscus positions is relaxed making interference detection as simple to employ as absorbance detection. Finally, experimental data comparing hs-SV-AUC (at 45K rpm) with standard low-speed (15K rpm) SV-AUC on the same AAV sample demonstrate the size distribution resolution improvement. These experiments also validate the use of a radial-time window and show how quickly data can be acquired using the hs-SV-AUC protocol.
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Affiliation(s)
| | - Nicholas Larson
- Analytical Development, Biogen, 225 Binney St, Cambridge, MA, 02142, USA
| | - George Bou-Assaf
- Analytical Development, Biogen, 225 Binney St, Cambridge, MA, 02142, USA
| | - Thomas Laue
- University of New Hampshire, 10 Kelsey Road, Lee, NH, 03861, USA
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5
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Yang A, Luo Y, Yang J, Xie T, Wang W, Wan X, Wang K, Pang D, Yang D, Dai H, Wu J, Meng S, Guo J, Wang Z, Shen S. Quantitation of Enterovirus A71 Empty and Full Particles by Sedimentation Velocity Analytical Ultracentrifugation. Viruses 2024; 16:573. [PMID: 38675915 PMCID: PMC11053756 DOI: 10.3390/v16040573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
The enterovirus A71 (EV71) inactivated vaccine is an effective intervention to control the spread of the virus and prevent EV71-associated hand, foot, and mouth disease (HFMD). It is widely administered to infants and children in China. The empty particles (EPs) and full particles (FPs) generated during production have different antigenic and immunogenic properties. However, the antigen detection methods currently used were established without considering the differences in antigenicity between EPs and FPs. There is also a lack of other effective analytical methods for detecting the different particle forms, which hinders the consistency between batches of products. In this study, we analyzed the application of sedimentation velocity analytical ultracentrifugation (SV-AUC) in characterizing the EPs and FPs of EV71. Our results showed that the proportions of the two forms could be quantified simultaneously by SV-AUC. We also determined the repeatability and accuracy of this method and found that both parameters were satisfactory. We assessed SV-AUC for bulk vaccine quality control, and our findings indicated that SV-AUC can be used effectively to analyze the percentage of EPs and FPs and monitor the consistency of the process to ensure the quality of the vaccine.
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Affiliation(s)
- Anna Yang
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Yun Luo
- The Research Core Facilities for Life Science (HUST), College of Life Science and Technology, Huazhong University of Science and Technology, Luoyu Road, Wuhan 430074, China
| | - Jie Yang
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Tingbo Xie
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Wenhui Wang
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Xin Wan
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Kaiwen Wang
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Deqin Pang
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Dongsheng Yang
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Hanyu Dai
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Jie Wu
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Shengli Meng
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Jing Guo
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Zejun Wang
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
| | - Shuo Shen
- Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China (J.Y.); (S.M.)
- National Engineering Technology Research Center of Combined Vaccines, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research and Development of Emerging Infectious Diseases, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
- Hubei Provincial Vaccines Technology Innozation Center, No. 1 Huangjin Industrial Park Road, Wuhan 430207, China
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6
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Yarawsky AE, Gough ES, Zai-Rose V, Figueroa NI, Cunningham HM, Burgner JW, DeLion MT, Paul LN. BASIS: BioAnalysis SEDFIT integrated software for cGMP analysis of SV-AUC data. EUROPEAN BIOPHYSICS JOURNAL : EBJ 2024; 53:111-121. [PMID: 38329496 DOI: 10.1007/s00249-024-01700-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 02/09/2024]
Abstract
Sedimentation velocity analytical ultracentrifugation (SV-AUC) has long been an important method for characterization of antibody therapeutics. Recently, SV-AUC has experienced a wave of new interest and usage from the gene and cell therapy industry, where SV-AUC has proven itself to be the "gold standard" analytical approach for determining capsid loading ratios for adeno-associated virus (AAV) and other viral vectors. While other more common approaches have existed in the realm of cGMP-compliant techniques for years, SV-AUC has long been used strictly for characterization, but not for release testing. This manuscript describes the challenges faced in bringing SV-AUC to a cGMP environment and describes a new program, "BASIS", which allows for 21 CFR Part 11-compliant data handling and data analysis using the well-known and frequently cited SEDFIT analysis software.
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Affiliation(s)
| | - Erik S Gough
- BioAnalysis, LLC, 3401 I Street Suite 206, Philadelphia, PA, 19134, USA
| | - Valeria Zai-Rose
- BioAnalysis, LLC, 3401 I Street Suite 206, Philadelphia, PA, 19134, USA
| | | | | | - John W Burgner
- BioAnalysis, LLC, 3401 I Street Suite 206, Philadelphia, PA, 19134, USA
| | - Michael T DeLion
- BioAnalysis, LLC, 3401 I Street Suite 206, Philadelphia, PA, 19134, USA
| | - Lake N Paul
- BioAnalysis, LLC, 3401 I Street Suite 206, Philadelphia, PA, 19134, USA.
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7
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Henrickson A, Ding X, Seal AG, Qu Z, Tomlinson L, Forsey J, Gradinaru V, Oka K, Demeler B. Characterization and quantification of adeno-associated virus capsid-loading states by multi-wavelength analytical ultracentrifugation with UltraScan. Nanomedicine (Lond) 2023; 18:1519-1534. [PMID: 37877696 PMCID: PMC10652292 DOI: 10.2217/nnm-2023-0156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/04/2023] [Indexed: 10/26/2023] Open
Abstract
Aim: We present multi-wavelength (MW) analytical ultracentrifugation (AUC) methods offering superior accuracy for adeno-associated virus characterization and quantification. Methods: Experimental design guidelines are presented for MW sedimentation velocity and analytical buoyant density equilibrium AUC. Results: Our results were compared with dual-wavelength AUC, transmission electron microscopy and mass photometry. In contrast to dual-wavelength AUC, MW-AUC correctly quantifies adeno-associated virus capsid ratios and identifies contaminants. In contrast to transmission electron microscopy, partially filled capsids can also be detected and quantified. In contrast to mass photometry, first-principle results are obtained. Conclusion: Our study demonstrates the improved information provided by MW-AUC, highlighting the utility of several recently integrated UltraScan programs, and reinforces AUC as the gold-standard analysis for viral vectors.
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Affiliation(s)
- Amy Henrickson
- Department of Chemistry & Biochemistry, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada
| | - Xiaozhe Ding
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Austin G Seal
- Gene Vector Core, Advanced Technology Cores, Baylor College of Medicine Houston, TX 77030, USA
| | - Zhe Qu
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | | | - John Forsey
- Pharmaron Biologics Ltd, Speke, Liverpool, L24 8RB, UK
| | - Viviana Gradinaru
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Kazuhiro Oka
- Gene Vector Core, Advanced Technology Cores, Baylor College of Medicine Houston, TX 77030, USA
- Department of Molecular & Cellular Biology, Baylor College of Medicine, TX 77030, USA
| | - Borries Demeler
- Department of Chemistry & Biochemistry, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada
- Department of Chemistry & Biochemistry, University of Montana, Missoula, MT 59812, USA
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8
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Demeler B, Gilbert R, Patel TR. Proceedings of the 25th Analytical Ultracentrifugation Workshops and Symposium. EUROPEAN BIOPHYSICS JOURNAL : EBJ 2023; 52:195-201. [PMID: 37526680 PMCID: PMC10870507 DOI: 10.1007/s00249-023-01674-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The 25th International Analytical Ultracentrifugation (AUC) Workshops and Symposium (AUC2022) took place at the University of Lethbridge in Lethbridge, Canada, in July 2022. In total, 104 attendees (Attendance Profile: 104 attendees, 69 in-person, 35 remote. Brazil 1, Canada 24, China 1, Czech Republic 2, Finland 1, France 3, Germany 22, India 3, Italy 1, Japan 4, Spain 1, Switzerland 3, Taiwan 1, United Kingdom 5, United States 32) participated in the event and presented the latest advances in the field. While the primary focus of the conference was to showcase the applications of AUC in chemical, life sciences, and nanoparticle disciplines, several presentations also integrated complementary methods, such as isothermal titration calorimetry, microscale thermophoresis, light scattering (static and dynamic), small-angle X-ray scattering, X-ray crystallography, and cryo-electron microscopy. Additionally, the delegates gained valuable hands-on experience from 20 workshops covering a broad range of applications, experimental designs and systems, and the latest software innovations in solution biophysics. The AUC2022 special volume highlights the sustained innovation, utility and relevance of AUC and related solution biophysical methods across various disciplines, including biochemistry, structural biology, synthetic polymer chemistry, carbohydrate chemistry, protein and nucleic acid characterization, nano-science, and macromolecular interactions.
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Affiliation(s)
- Borries Demeler
- Department of Chemistry and Biochemistry, Alberta RNA Research and Training Institute, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada.
- Canadian Centre for Hydrodynamics, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada.
| | - Robert Gilbert
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - Trushar R Patel
- Department of Chemistry and Biochemistry, Alberta RNA Research and Training Institute, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada.
- Canadian Centre for Hydrodynamics, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada.
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9
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Schuck P, To SC, Zhao H. An automated interface for sedimentation velocity analysis in SEDFIT. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.14.540690. [PMID: 37425873 PMCID: PMC10327192 DOI: 10.1101/2023.05.14.540690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Sedimentation velocity analytical ultracentrifugation (SV-AUC) is an indispensable tool for the study of particle size distributions in biopharmaceutical industry, for example, to characterize protein therapeutics and vaccine products. In particular, the diffusion-deconvoluted sedimentation coefficient distribution analysis, in the software SEDFIT, has found widespread applications due to its relatively high resolution and sensitivity. However, a lack of available software compatible with Good Manufacturing Practices (GMP) has hampered the use of SV-AUC in this regulatory environment. To address this, we have created an interface for SEDFIT so that it can serve as an automatically spawned module with controlled data input through command line parameters and output of key results in files. The interface can be integrated in custom GMP compatible software, and in scripts that provide documentation and meta-analyses for replicate or related samples, for example, to streamline analysis of large families of experimental data, such as binding isotherm analyses in the study of protein interactions. To test and demonstrate this approach we provide a MATLAB script mlSEDFIT.
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Affiliation(s)
- Peter Schuck
- Laboratory of Dynamics of Macromolecular Assembly, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892, USA
| | - Samuel C. To
- Laboratory of Dynamics of Macromolecular Assembly, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892, USA
| | - Huaying Zhao
- Laboratory of Dynamics of Macromolecular Assembly, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892, USA
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