1
|
Escobar ELN, Vaclaw MC, Lozenski JT, Dhar P. Using Passive Microrheology to Measure the Evolution of the Rheological Properties of NIST mAb Formulations during Adsorption to the Air-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4789-4800. [PMID: 38379175 DOI: 10.1021/acs.langmuir.3c03658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The development of novel protein-based therapeutics, such as monoclonal antibodies (mAbs), is often limited due to challenges associated with maintaining the stability of these formulations during manufacturing, storage, and clinical administration. An undesirable consequence of the instability of protein therapeutics is the formation of protein particles. MAbs can adsorb to interfaces and have the potential to undergo partial unfolding as well as to form viscoelastic gels. Further, the viscoelastic properties may be correlated with their aggregation potential. In this work, a passive microrheology technique was used to correlate the evolution of surface adsorption with the evolution of surface rheology of the National Institute of Standards and Technology (NIST) mAb reference material (NIST mAb) and interface-induced subvisible protein particle formation. The evolution of the surface adsorption and interfacial shear rheological properties of the NIST mAb was recorded in four formulation conditions: two different buffers (histidine vs phosphate-buffered saline) and two different pHs (6.0 and 7.6). Our results together demonstrate the existence of multiple stages for both surface adsorption and surface rheology, characterized by an induction period that appears to be purely viscous, followed by a sharp increase in protein molecules at the interface when the film rheology is viscoelastic and ultimately a slowdown in the surface adsorption that corresponds to the formation of solid-like or glassy films at the interface. When the transitions between the different stages occurred, they were dependent on the buffer/pH of the formulations. The onset of these transitions can also be correlated to the number of protein particles formed at the interface. Finally, the addition of polysorbate 80, an FDA-approved surfactant used to mitigate protein particle formation, led to the interface being surfactant-dominated, and the resulting interface remained purely viscous.
Collapse
Affiliation(s)
- Estephanie Laura Nottar Escobar
- Department of Chemical and Petroleum Engineering, The University of Kansas, 1530W 15th Street, Lawrence, Kansas 66045, United States
| | - M Coleman Vaclaw
- Bioengineering Program, School of Engineering, The University of Kansas, 1530W 15th Street, Lawrence, Kansas 66045, United States
| | - Joseph T Lozenski
- Department of Chemical and Petroleum Engineering, The University of Kansas, 1530W 15th Street, Lawrence, Kansas 66045, United States
| | - Prajnaparamita Dhar
- Department of Chemical and Petroleum Engineering, The University of Kansas, 1530W 15th Street, Lawrence, Kansas 66045, United States
| |
Collapse
|
2
|
Qin X, Li X, Chen L, Gao T, Luo J, Guo L, Mollah S, Zhang Z, Zhou Y, Chen HX. Characterization of Adeno-Associated Virus Capsid Proteins by Microflow Liquid Chromatography Coupled with Mass Spectrometry. Appl Biochem Biotechnol 2024; 196:1623-1635. [PMID: 37436544 DOI: 10.1007/s12010-023-04656-x] [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] [Accepted: 07/04/2023] [Indexed: 07/13/2023]
Abstract
Adeno-associated virus (AAV) has been widely used to treat various human diseases as an important delivery vector for gene therapy due to its low immunogenicity and safety. AAV capsids proteins are comprised of three capsid viral proteins (VP; VP1, VP2, VP3). The capsid proteins play a key role in viral vector infectivity and transduction efficiency. To ensure the safety and efficacy of AAV gene therapy products, the quality of AAV vector capsid proteins during development and production should be carefully monitored and controlled. Microflow liquid chromatography coupled with mass spectrometry provides superior sensitivity and fast analysis capability. It showed significant advantages in the analysis of low- concentration and large numbers of AAV samples. The intact mass of capsid protein can be accurately determined using high-resolution mass spectrometry (MS). And MS also provides highly confident confirmation of sequence coverage and post-translational modifications site identification and quantitation. In this study, we used microflow liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the characterization of AAV2 capsid protein. we obtained nearly 100% sequence coverage of low-concentration AAV2 capsid protein (8 × 1011 GC/mL). More than 30 post-translational modifications (PTMs) sites were identified, the PTMs types included deamidation, oxidation and acetylation. From this study, the proposed microflow LC-MS/MS method provides a sensitive and high throughput approach in the characterization of AAVs and other biological products with low abundance.
Collapse
Affiliation(s)
- Xi Qin
- Division of Recombinant Biological Products, National Institutes for Food and Drug Control (NIFDC), Beijing, 100501, People's Republic of China
| | - Xiang Li
- Division of Recombinant Biological Products, National Institutes for Food and Drug Control (NIFDC), Beijing, 100501, People's Republic of China
| | | | - Tie Gao
- SCIEX, Beijing, 100015, People's Republic of China
| | - Ji Luo
- SCIEX, Beijing, 100015, People's Republic of China
| | - Lihai Guo
- SCIEX, Beijing, 100015, People's Republic of China
| | | | | | - Yong Zhou
- Division of Recombinant Biological Products, National Institutes for Food and Drug Control (NIFDC), Beijing, 100501, People's Republic of China.
| | - Hong-Xu Chen
- SCIEX, Beijing, 100015, People's Republic of China.
| |
Collapse
|
3
|
Tang S, Tao J, Li Y. Challenges and solutions for the downstream purification of therapeutic proteins. Antib Ther 2024; 7:1-12. [PMID: 38235378 PMCID: PMC10791043 DOI: 10.1093/abt/tbad028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/27/2023] [Accepted: 11/15/2023] [Indexed: 01/19/2024] Open
Abstract
The innovation in recombinant protein technology has brought forth a host of challenges related to the purification of these therapeutic proteins. This article delves into the intricate landscape of developing purification processes for artificially designed therapeutic proteins. The key hurdles include controlling protein reduction, protein capture, ensuring stability, eliminating aggregates, removing host cell proteins and optimizing protein recovery. In this review, we outline the purification strategies in order to obtain products of high purity, highlighting the corresponding solutions to circumvent the unique challenges presented by recombinant therapeutic proteins, and exemplify the practical applications by case studies. Finally, a perspective towards future purification process development is provided.
Collapse
Affiliation(s)
- Shuo Tang
- GenScript ProBio Biotechnology Co., Ltd, Nanjing, Jiangsu 21100, P.R. China
| | - Jiaoli Tao
- GenScript ProBio Biotechnology Co., Ltd, Nanjing, Jiangsu 21100, P.R. China
| | - Ying Li
- GenScript ProBio Biotechnology Co., Ltd, Nanjing, Jiangsu 21100, P.R. China
| |
Collapse
|
4
|
Rahban M, Ahmad F, Piatyszek MA, Haertlé T, Saso L, Saboury AA. Stabilization challenges and aggregation in protein-based therapeutics in the pharmaceutical industry. RSC Adv 2023; 13:35947-35963. [PMID: 38090079 PMCID: PMC10711991 DOI: 10.1039/d3ra06476j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/30/2023] [Indexed: 04/26/2024] Open
Abstract
Protein-based therapeutics have revolutionized the pharmaceutical industry and become vital components in the development of future therapeutics. They offer several advantages over traditional small molecule drugs, including high affinity, potency and specificity, while demonstrating low toxicity and minimal adverse effects. However, the development and manufacturing processes of protein-based therapeutics presents challenges related to protein folding, purification, stability and immunogenicity that should be addressed. These proteins, like other biological molecules, are prone to chemical and physical instabilities. The stability of protein-based drugs throughout the entire manufacturing, storage and delivery process is essential. The occurrence of structural instability resulting from misfolding, unfolding, and modifications, as well as aggregation, poses a significant risk to the efficacy of these drugs, overshadowing their promising attributes. Gaining insight into structural alterations caused by aggregation and their impact on immunogenicity is vital for the advancement and refinement of protein therapeutics. Hence, in this review, we have discussed some features of protein aggregation during production, formulation and storage as well as stabilization strategies in protein engineering and computational methods to prevent aggregation.
Collapse
Affiliation(s)
- Mahdie Rahban
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences Kerman Iran
| | - Faizan Ahmad
- Department of Biochemistry, School of Chemical & Life Sciences, Jamia Hamdard New Delhi-110062 India
| | | | | | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University Rome Italy
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran Tehran 1417614335 Iran +9821 66404680 +9821 66956984
| |
Collapse
|
5
|
Two peak elution behavior of a monoclonal antibody in cation exchange chromatography as a screening tool for excipients. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1214:123563. [PMID: 36525885 DOI: 10.1016/j.jchromb.2022.123563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Aggregation of proteins is a critical quality attribute and a major concern during the purification of therapeutic proteins, like monoclonal antibodies. In-solution experiments applying different stress scenarios, e.g., mechanical, or physical stresses, can determine the overall conformational stability of the protein to enhance drug product shelf-life. Several groups have reported surface-induced unfolding and aggregation of monoclonal antibodies and their derivatives during cation exchange chromatography, which results in a two-peak elution behavior of the protein and its species. We have investigated universal influencing factors, like temperature and hold time, on this phenomenon. The formation of the second peak is a kinetic process, which is strongly influenced by temperature during the hold time. However, our main focus was the application of excipients and their influence on the two-peak elution behavior. We compared the on-column screening results with results obtained through a "traditional" in-solution screening using nanoDSF. Mostly, stabilizing excipients, like Sucrose, show their stabilizing abilities in both systems, but some discrepancies, e.g., using Arginine, between the two orthogonal techniques show the potential of the on-column screening system to lead to unexpected results, which would not necessarily be visible in in-solution experiments.
Collapse
|
6
|
Kim SH, Yoo HJ, Park EJ, Lee W, Na DH. Impact of buffer concentration on the thermal stability of immunoglobulin G. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2022. [DOI: 10.1007/s40005-022-00587-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
7
|
Nano Differential Scanning Fluorimetry-Based Thermal Stability Screening and Optimal Buffer Selection for Immunoglobulin G. Pharmaceuticals (Basel) 2021; 15:ph15010029. [PMID: 35056086 PMCID: PMC8778976 DOI: 10.3390/ph15010029] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/12/2021] [Accepted: 12/22/2021] [Indexed: 11/16/2022] Open
Abstract
Nano differential scanning fluorimetry (nanoDSF) is a high-throughput protein stability screening technique that simultaneously monitors protein unfolding and aggregation properties. The thermal stability of immunoglobulin G (IgG) was investigated in three different buffers (sodium acetate, sodium citrate, and sodium phosphate) ranging from pH 4 to 8. In all three buffers, the midpoint temperature of thermal unfolding (Tm) showed a tendency to increase as the pH increased, but the aggregation propensity was different depending on the buffer species. The best stability against aggregation was obtained in the sodium acetate buffers below pH 4.6. On the other hand, IgG in the sodium citrate buffer had higher aggregation and viscosity than in the sodium acetate buffer at the same pH. Difference of aggregation between acetate and citrate buffers at the same pH could be explained by a protein-protein interaction study, performed with dynamic light scattering, which suggested that intermolecular interaction is attractive in citrate buffer but repulsive in acetate buffer. In conclusion, this study indicates that the sodium acetate buffer at pH 4.6 is suitable for IgG formulation, and the nanoDSF method is a powerful tool for thermal stability screening and optimal buffer selection in antibody formulations.
Collapse
|
8
|
Plate Reader-Based Analytical Method for the Size Distribution of Submicron-Sized Protein Aggregates Using Three-Dimensional Homodyne Light Detection. J Pharm Sci 2021; 110:3803-3810. [PMID: 34425131 DOI: 10.1016/j.xphs.2021.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 08/17/2021] [Accepted: 08/17/2021] [Indexed: 11/23/2022]
Abstract
The assessment of aggregates is essential in biopharmaceutical development. Although submicron-sized aggregates are considered to have a potential immunogenicity risk, analytical techniques are limited. In this study, we present a new analytical technique using three-dimensional homodyne light detection (3D-HLD). In this system, submicron-sized particles are quantified by combining the reflected light detection of each particle by high-speed 3D scan and then enhancing the amplitude of the reflected light using HLD. The particle concentrations and size distributions of human tetanus immune globulin (TIG) aggregates generated by stirring were measured using 3D-HLD. Both concentrations and distributions were comparable to those obtained via resonant mass measurement (RMM), a technique commonly used for submicron-sized particle measurement. Aiming at feasibility assessment of 3D-HLD for the high-through-put formulation development, 30 formulations of TIG and rituximab under agitation stress were analyzed by 3D-HLD. The results showed that 3D-HLD can automatically and simultaneously assess the aggregate concentrations and size distributions of at least 90 samples. This study demonstrates that 3D-HLD can be used for submicron-sized aggregate analysis as an orthogonal method to RMM and also as a screening tool during formulation development.
Collapse
|
9
|
Oyama H, Ishii K, Maruno T, Torisu T, Uchiyama S. Characterization of Adeno-Associated Virus Capsid Proteins with Two Types of VP3-Related Components by Capillary Gel Electrophoresis and Mass Spectrometry. Hum Gene Ther 2021; 32:1403-1416. [PMID: 34082578 PMCID: PMC10112878 DOI: 10.1089/hum.2021.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Recombinant adeno-associated virus is a leading platform in human gene therapy. The adeno-associated virus (AAV) capsid is composed of three viral proteins (VPs): VP1, VP2, and VP3. To ensure the safety of AAV-based gene therapy products, the stoichiometry of VPs of AAV vector should be carefully monitored. In this study, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, capillary gel electrophoresis (CGE), and liquid chromatography-UV-mass spectrometry (LC-UV-MS) were performed to evaluate the VP components of AAV1, AAV2, and AAV6. Two types of VP3-related components, VP3 variant and VP3 fragment, were identified. The VP3 variant was the N-terminal shorter VP3, of which the translation started at M211, not at the conventional initiation codon, M203. The VP3 variant could be generated by leaky scanning of the first initiation codon of VP3. We also showed that the VP3 variant was identified in a minor peak before VP3 in CGE measurement. Meanwhile, the VP3 fragment was the C-terminal cleaved VP3, of which the sequence of VP3 ended at D590 or D626, indicating that cleavage occurred between D590 and P591, or D626 and G627. The cause of the cleavage of the DP or DG sequence was hydrolysis due to low pH of the mobile phase and high temperature of the column oven in the LC system, which was necessary to clearly separate the peak of VPs. VP3 fragments, detected only in LC-UV-MS in small amount account with less than 3% of total peak area, should be included in the quantification of VP3. Finally, the relationship of VP stoichiometry determined by the above three methods was discussed. From this study, we proposed that the VP components of AAV should be complementarily evaluated by CGE and LC-UV-MS.
Collapse
Affiliation(s)
- Hiroaki Oyama
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Kentaro Ishii
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Takahiro Maruno
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Tetsuo Torisu
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Susumu Uchiyama
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan.,Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Myodaiji-cho, Japan
| |
Collapse
|
10
|
Stange C, Hafiz S, Korpus C, Skudas R, Frech C. Influence of excipients in Protein A chromatography and virus inactivation. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1179:122848. [PMID: 34274642 DOI: 10.1016/j.jchromb.2021.122848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 06/20/2021] [Accepted: 06/24/2021] [Indexed: 01/17/2023]
Abstract
The purification of monoclonal antibodies and Fc fusion proteins consist of several unit operations operated commonly as a platform approach, starting with Protein A chromatography. The first capture step, the following low pH virus inactivation, and subsequent ion exchange chromatography steps are mostly able to remove any impurities, like host cell proteins, aggregates, and viruses. The changes in pH and conductivity during these steps can lead to additional unwanted product species like aggregates. In this study, excipients with stabilizing abilities, like polyols, were used as buffer system additives to study their impact on several aspects during Protein A chromatography, low pH virus inactivation, and cation exchange chromatography. The results show that excipients, like PEG4000, influence antibody elution behavior, as well as host-cell protein elution behavior in a pH-gradient setup. Sugar excipients, like Sucrose, stabilize the antibody during low pH virus inactivation. All excipients tested show no negative impact on virus inactivation and dynamic binding capacity in a subsequent cation exchange chromatography step. This study indicates that excipients and, possibly excipient combinations, can have a beneficial effect on purification without harming subsequent downstream processing steps.
Collapse
Affiliation(s)
- Carolin Stange
- Institute for Biochemistry, University of Applied Sciences Mannheim, Paul-Wittsack-Straße 10, 68163 Mannheim, Germany
| | - Supriyadi Hafiz
- Merck KGaA, Frankfurter Straße 250, 64293 Darmstadt, Germany
| | | | - Romas Skudas
- Merck KGaA, Frankfurter Straße 250, 64293 Darmstadt, Germany
| | - Christian Frech
- Institute for Biochemistry, University of Applied Sciences Mannheim, Paul-Wittsack-Straße 10, 68163 Mannheim, Germany.
| |
Collapse
|
11
|
Chi B, De Oliveira G, Gallagher T, Mitchell L, Knightley L, Gonzalez CC, Russell S, Germaschewski V, Pearce C, Sellick CA. Pragmatic mAb lead molecule engineering from a developability perspective. Biotechnol Bioeng 2021; 118:3733-3743. [PMID: 33913507 DOI: 10.1002/bit.27802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/26/2021] [Accepted: 04/15/2021] [Indexed: 01/08/2023]
Abstract
As the number of antibody drugs being approved and marketed increases, our knowledge of what makes potential drug candidates a successful product has increased tremendously. One of the critical parameters that have become clear in the field is the importance of mAb "developability." Efforts are being increasingly focused on simultaneously selecting molecules that exhibit both desirable biological potencies and manufacturability attributes. In the current study mutations to improve the developability profile of a problematic antibody that inconsistently precipitates in a batch scale-dependent fashion using a standard platform purification process are described. Initial bioinformatic analysis showed the molecule has no obvious sequence or structural liabilities that might lead it to precipitate. Subsequent analysis of the molecule revealed the presence of two unusual positively charged mutations on the light chain at the interface of VH and VL domains, which were hypothesized to be the primary contributor to molecule precipitation during process development. To investigate this hypothesis, straightforward reversion to the germline of these residues was carried out. The resulting mutants have improved expression titers and recovered stability within a forced precipitation assay, without any change to biological activity. Given the time pressures of drug development in industry, process optimization of the lead molecule was carried out in parallel to the "retrospective" mutagenesis approach. Bespoke process optimization for large-scale manufacturing was successful. However, we propose that such context-dependent sequence liabilities should be included in the arsenal of in silico developability screening early in development; particularly since this specific issue can be efficiently mitigated without the requirement for extensive screening of lead molecule variants.
Collapse
Affiliation(s)
| | | | - Tom Gallagher
- Kymab Ltd., Cambridge, UK.,F-star Therapeutics Ltd., Cambridge, UK
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Manrrique JD, Powell ZK, Brock RM, Franklin CE, Coker AO. Room Temperature Intrinsic Emission Ratio of BSA Correlates With Percent Aggregates During Long-Term Storage. J Pharm Sci 2020; 110:1120-1129. [PMID: 33127426 DOI: 10.1016/j.xphs.2020.10.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/04/2020] [Accepted: 10/22/2020] [Indexed: 10/23/2022]
Abstract
Successful formulation development hinges on the ability to screen and identify excipients that stabilize drug products during long-term storage. Biophysical and accelerated stability studies are used to screen for excipients that stabilize protein drug products. However, these studies are not always predictive of aggregation during long-term storage. In this study, we used multivariate experimentation to compare the effectiveness of intrinsic fluorescence and size exclusion chromatography accelerated stability parameters to predict excipients that stabilized bovine serum albumin (BSA) against aggregation on long-term storage at 4 °C. Emission intensity ratio (IR330/350) data was more sensitive than emission maxima (λmax) or intensity measurements in identifying significant factors and interactions. We observed the expected inverse correlation between the mid-points of fluorescence thermal transitions (Tms) and insoluble aggregates at 4 and 40 °C. However, there were positive correlations between Tms and % aggregates at 4 °C, indicating that if Tm was used as a predictive tool, it would select formulations that promoted soluble aggregates on long-term storage. Ambient temperature IR330/350 measurements identified excipients that reduced BSA soluble aggregates on long-term storage. The results show ambient temperature emission ratio measurements can be useful for protein formulation development.
Collapse
Affiliation(s)
- Joel D Manrrique
- University of the Incarnate Word Feik School of Pharmacy, Department of Pharmaceutical Sciences, San Antonio, TX, USA
| | - Zakiya K Powell
- University of the Incarnate Word Feik School of Pharmacy, Department of Pharmaceutical Sciences, San Antonio, TX, USA
| | - Ryan M Brock
- University of the Incarnate Word Feik School of Pharmacy, Department of Pharmaceutical Sciences, San Antonio, TX, USA
| | - Cynthia E Franklin
- University of the Incarnate Word Feik School of Pharmacy, Department of Pharmaceutical Sciences, San Antonio, TX, USA
| | - Adeola O Coker
- University of the Incarnate Word Feik School of Pharmacy, Department of Pharmaceutical Sciences, San Antonio, TX, USA.
| |
Collapse
|
13
|
Pham NB, Meng WS. Protein aggregation and immunogenicity of biotherapeutics. Int J Pharm 2020; 585:119523. [PMID: 32531452 DOI: 10.1016/j.ijpharm.2020.119523] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/01/2020] [Accepted: 06/06/2020] [Indexed: 12/19/2022]
Abstract
Recombinant proteins are the mainstay of biopharmaceuticals. A key challenge in the manufacturing and formulation of protein biologic products is the tendency for the active pharmaceutical ingredients to aggregate, resulting in irreversible drug loss, and an increase in immunogenicity risk. While the molecular mechanisms of protein aggregation have been discussed extensively in the literature, knowledge gaps remain in connecting the phenomenon in the context of immunogenicity of biotherapeutics. In this review, we discussed factors that drive aggregation of pharmaceutical recombinant proteins, and highlighted methods of prediction and mitigation that can be deployed through the development stages, from formulation to bioproduction. The purpose is to stimulate new dialogs that would bridge the interface between physical characterizations of protein aggregates in biotherapeutics and the functional attributes of the immune system.
Collapse
Affiliation(s)
- Ngoc B Pham
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA 15282, United States
| | - Wilson S Meng
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA 15282, United States; McGowan Institute for Regenerative Medicine, University of Pittsburgh, PA 15219, United States.
| |
Collapse
|
14
|
Microfiltration of soy sauce: Efficiency, resistance and fouling mechanism at different operating stages. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116656] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|