101
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Roberts D, Keeling R, Tracka M, van der Walle CF, Uddin S, Warwicker J, Curtis R. The role of electrostatics in protein-protein interactions of a monoclonal antibody. Mol Pharm 2014; 11:2475-89. [PMID: 24892385 DOI: 10.1021/mp5002334] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Understanding how protein-protein interactions depend on the choice of buffer, salt, ionic strength, and pH is needed to have better control over protein solution behavior. Here, we have characterized the pH and ionic strength dependence of protein-protein interactions in terms of an interaction parameter kD obtained from dynamic light scattering and the osmotic second virial coefficient B22 measured by static light scattering. A simplified protein-protein interaction model based on a Baxter adhesive potential and an electric double layer force is used to separate out the contributions of longer-ranged electrostatic interactions from short-ranged attractive forces. The ionic strength dependence of protein-protein interactions for solutions at pH 6.5 and below can be accurately captured using a Deryaguin-Landau-Verwey-Overbeek (DLVO) potential to describe the double layer forces. In solutions at pH 9, attractive electrostatics occur over the ionic strength range of 5-275 mM. At intermediate pH values (7.25 to 8.5), there is a crossover effect characterized by a nonmonotonic ionic strength dependence of protein-protein interactions, which can be rationalized by the competing effects of long-ranged repulsive double layer forces at low ionic strength and a shorter ranged electrostatic attraction, which dominates above a critical ionic strength. The change of interactions from repulsive to attractive indicates a concomitant change in the angular dependence of protein-protein interaction from isotropic to anisotropic. In the second part of the paper, we show how the Baxter adhesive potential can be used to predict values of kD from fitting to B22 measurements, thus providing a molecular basis for the linear correlation between the two protein-protein interaction parameters.
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Affiliation(s)
- D Roberts
- School of Chemical Engineering and Analytical Science, The University of Manchester , Sackville Street, Manchester M13 9PL, U.K
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102
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Concentration dependent viscosity of monoclonal antibody solutions: explaining experimental behavior in terms of molecular properties. Pharm Res 2014; 31:3161-78. [PMID: 24906598 DOI: 10.1007/s11095-014-1409-0] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 05/06/2014] [Indexed: 01/18/2023]
Abstract
PURPOSE Early identification of monoclonal antibody candidates whose development, as high concentration (≥100 mg/mL) drug products, could prove challenging, due to high viscosity, can help define strategies for candidate engineering and selection. METHODS Concentration dependent viscosities of 11 proprietary mAbs were measured. Sequence and structural features of the variable (Fv) regions were analyzed to understand viscosity behavior of the mAbs. Coarse-grained molecular simulations of two problematic mAbs were compared with that of a well behaved mAb. RESULTS Net charge, ξ-potential and pI of Fv regions were found to correlate with viscosities of highly concentrated antibody solutions. Negative net charges on the Fv regions of two mAbs with poor viscosity behaviors facilitate attractive self-associations, causing them to diffuse slower than a well-behaved mAb with positive net charge on its Fv region. An empirically derived equation that connects aggregation propensity and pI of the Fv region with high concentration viscosity of the whole mAb was developed. CONCLUSIONS An Fv region-based qualitative screening profile was devised to flag mAb candidates whose development, as high concentration drug products, could prove challenging. This screen can facilitate developability risk assessment and mitigation strategies for antibody based therapeutics via rapid high throughput material-free screening.
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103
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Schmit JD, He F, Mishra S, Ketchem RR, Woods CE, Kerwin BA. Entanglement Model of Antibody Viscosity. J Phys Chem B 2014; 118:5044-9. [DOI: 10.1021/jp500434b] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jeremy D. Schmit
- Department
of Physics, Kansas State University, Manhattan, Kansas 66506, United States
| | - Feng He
- Department
of Drug Product Development, Amgen, Inc., Seattle, Washington 98101, United States
| | - Shradha Mishra
- Department
of Physics, Kansas State University, Manhattan, Kansas 66506, United States
| | - Randal R. Ketchem
- Department
of Biological Optimization, Amgen, Inc., Seattle, Washington 98101, United States
| | - Christopher E. Woods
- Department
of Drug Product Development, Amgen, Inc., Seattle, Washington 98101, United States
| | - Bruce A. Kerwin
- Department
of Drug Product Development, Amgen, Inc., Seattle, Washington 98101, United States
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104
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Rubin J, Sharma A, Linden L, Bommarius AS, Behrens SH. Gauging Colloidal and Thermal Stability in Human IgG1–Sugar Solutions through Diffusivity Measurements. J Phys Chem B 2014; 118:2803-9. [DOI: 10.1021/jp411185d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jonathan Rubin
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0100, United States
- Parker H. Petit Institute of Bioengineering & Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332-0363, United States
| | - Aditi Sharma
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0100, United States
- Parker H. Petit Institute of Bioengineering & Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332-0363, United States
| | - Lars Linden
- Bayer
Healthcare AG, Global Biologics, Wuppertal 42096, Germany
| | - Andreas S. Bommarius
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0100, United States
- Parker H. Petit Institute of Bioengineering & Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332-0363, United States
- School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Sven H. Behrens
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0100, United States
- Parker H. Petit Institute of Bioengineering & Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332-0363, United States
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105
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Menzen T, Friess W. Temperature-Ramped Studies on the Aggregation, Unfolding, and Interaction of a Therapeutic Monoclonal Antibody. J Pharm Sci 2014; 103:445-55. [DOI: 10.1002/jps.23827] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 12/04/2013] [Accepted: 12/04/2013] [Indexed: 12/11/2022]
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106
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Cheng W, Joshi SB, Jain NK, He F, Kerwin BA, Volkin DB, Russell Middaugh C. Linking the Solution Viscosity of an IgG2 Monoclonal Antibody to Its Structure as a Function of pH and Temperature. J Pharm Sci 2013; 102:4291-304. [DOI: 10.1002/jps.23748] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 09/16/2013] [Accepted: 09/19/2013] [Indexed: 12/13/2022]
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107
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Neergaard MS, Nielsen AD, Parshad H, Van De Weert M. Stability of monoclonal antibodies at high-concentration: head-to-head comparison of the IgG1 and IgG4 subclass. J Pharm Sci 2013; 103:115-27. [PMID: 24282022 DOI: 10.1002/jps.23788] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 09/07/2013] [Accepted: 10/24/2013] [Indexed: 12/21/2022]
Abstract
Few studies have so far directly compared the impact of antibody subclass on protein stability. This case study investigates two mAbs (one IgG1 and one IgG4 ) with identical variable region. Investigations of mAbs that recognize similar epitopes are necessary to identify possible differences between the IgG subclasses. Both physical and chemical stability were evaluated by applying a range of methods to measure formation of protein aggregates [size-exclusion chromatography (SEC)-HPLC and UV340 nm], structural integrity (circular dichroism and FTIR), thermodynamic stability (differential scanning calorimetry), colloidal interactions (dynamic light scattering), and fragmentation and deamidation (SEC-HPLC and capillary isoelectric focusing). The impact of pH (4-9) and ionic strength (10 and 150 mM) was investigated using highly-concentrated (150 mg/mL) mAb formulations. Lower conformational stability was identified for the IgG4 resulting in increased levels of soluble aggregates. The IgG1 was chemically less stable as compared with the IgG4 , presumably because of the higher flexibility in the IgG1 hinge region. The thermodynamic stability of individual mAb domains was also addressed in detail. The stability of our mAb molecules is clearly affected by the IgG framework, and this study suggests that subclass switching may alter aggregation propensity and aggregation pathway and thus potentially improve the overall formulation stability while retaining antigen specificity.
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Affiliation(s)
- Martin S Neergaard
- Section for Biologics, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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108
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Esfandiary R, Hayes DB, Parupudi A, Casas-Finet J, Bai S, Samra HS, Shah AU, Sathish HA. A systematic multitechnique approach for detection and characterization of reversible self-association during formulation development of therapeutic antibodies. J Pharm Sci 2013; 102:3089-99. [DOI: 10.1002/jps.23654] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 10/17/2012] [Accepted: 10/19/2012] [Indexed: 12/21/2022]
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109
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Sun T, Reid F, Liu Y, Cao Y, Estep P, Nauman C, Xu Y. High throughput detection of antibody self-interaction by bio-layer interferometry. MAbs 2013; 5:838-41. [PMID: 23995620 DOI: 10.4161/mabs.26186] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Self-interaction of an antibody may lead to aggregation, low solubility or high viscosity. Rapid identification of highly developable leads remains challenging, even though progress has been made with the introduction of techniques such as self-interaction chromatography (SIC) and cross-interaction chromatography (CIC). Here, we report a high throughput method to detect antibody clone self-interaction (CSI) using bio-layer interferometry (BLI) technology. Antibodies with strong self-interaction responses in the CSI-BLI assay also show delayed retention times in SIC and CIC. This method allows hundreds of candidates to be screened in a matter of hours with minimal material consumption.
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Affiliation(s)
| | | | - Yuqi Liu
- Protein Analytics; Adimab; Lebanon, NH USA
| | - Yuan Cao
- Protein Analytics; Adimab; Lebanon, NH USA
| | | | | | - Yingda Xu
- Protein Analytics; Adimab; Lebanon, NH USA
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110
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111
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Neergaard MS, Kalonia DS, Parshad H, Nielsen AD, Møller EH, van de Weert M. Viscosity of high concentration protein formulations of monoclonal antibodies of the IgG1 and IgG4 subclass – Prediction of viscosity through protein–protein interaction measurements. Eur J Pharm Sci 2013; 49:400-10. [DOI: 10.1016/j.ejps.2013.04.019] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 04/16/2013] [Accepted: 04/17/2013] [Indexed: 01/19/2023]
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112
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Lilyestrom WG, Yadav S, Shire SJ, Scherer TM. Monoclonal Antibody Self-Association, Cluster Formation, and Rheology at High Concentrations. J Phys Chem B 2013; 117:6373-84. [DOI: 10.1021/jp4008152] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Wayne G. Lilyestrom
- Late Stage
Pharmaceutical Development, Genentech (a Member of the Roche Group), 1 DNA Way,
South San Francisco, California 94080, United States
| | - Sandeep Yadav
- Late Stage
Pharmaceutical Development, Genentech (a Member of the Roche Group), 1 DNA Way,
South San Francisco, California 94080, United States
| | - Steven J. Shire
- Late Stage
Pharmaceutical Development, Genentech (a Member of the Roche Group), 1 DNA Way,
South San Francisco, California 94080, United States
| | - Thomas M. Scherer
- Late Stage
Pharmaceutical Development, Genentech (a Member of the Roche Group), 1 DNA Way,
South San Francisco, California 94080, United States
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113
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Sule SV, Dickinson CD, Lu J, Chow CK, Tessier PM. Rapid analysis of antibody self-association in complex mixtures using immunogold conjugates. Mol Pharm 2013; 10:1322-31. [PMID: 23383873 DOI: 10.1021/mp300524x] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A key challenge in developing therapeutic antibodies is their highly variable propensities to self-associate at high antibody concentrations (>50 mg/mL) required for subcutaneous delivery. Identification of monoclonal antibodies (mAbs) in the initial discovery process that not only have high binding affinity but also have high solubility and low viscosity would simplify the development of safe and effective antibody therapeutics. Unfortunately, the low purities, small quantities and large numbers of antibody candidates during the early discovery process are incompatible with current methods of measuring antibody self-association. We report a method (affinity-capture self-interaction nanoparticle spectroscopy, AC-SINS) capable of identifying mAbs with low self-association propensity that is robust even at low mAb concentrations (5-50 μg/mL) and in the presence of cell culture media. Gold nanoparticles are coated with polyclonal antibodies specific for human antibodies, and then human mAbs are captured from dilute antibody solutions. We find that the wavelength of maximum absorbance (plasmon wavelength) of antibody-gold conjugates--which red-shifts as the distance between particles is reduced due to attractive mAb self-interactions--is well correlated with light scattering measurements conducted at several orders of magnitude higher antibody concentrations. The generality of AC-SINS makes it well suited for use in diverse settings ranging from antibody discovery to formulation development.
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Affiliation(s)
- Shantanu V Sule
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
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114
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Rubin J, Linden L, Coco WM, Bommarius AS, Behrens SH. Salt-Induced Aggregation of a Monoclonal Human Immunoglobulin G1. J Pharm Sci 2013; 102:377-86. [DOI: 10.1002/jps.23363] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 10/13/2012] [Accepted: 10/18/2012] [Indexed: 11/06/2022]
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115
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Saito S, Hasegawa J, Kobayashi N, Tomitsuka T, Uchiyama S, Fukui K. Effects of ionic strength and sugars on the aggregation propensity of monoclonal antibodies: influence of colloidal and conformational stabilities. Pharm Res 2013; 30:1263-80. [PMID: 23319172 DOI: 10.1007/s11095-012-0965-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 12/13/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE To develop a general strategy for optimizing monoclonal antibody (MAb) formulations. METHODS Colloidal stabilities of four representative MAbs solutions were assessed based on the second virial coefficient (B 2) at 20°C and 40°C, and net charges at different NaCl concentrations, and/or in the presence of sugars. Conformational stabilities were evaluated from the unfolding temperatures. The aggregation propensities were determined at 40°C and after freeze-thawing. The electrostatic potential of antibody surfaces was simulated for the development of rational formulations. RESULTS Similar B 2 values were obtained at 20°C and 40°C, implying little dependence on temperature. B 2 correlated quantitatively with aggregation propensities at 40°C. The net charge partly correlated with colloidal stability. Salts stabilized or destabilized MAbs, depending on repulsive or attractive interactions. Sugars improved the aggregation propensity under freeze-thaw stress through improved conformational stability. Uneven and even distributions of potential surfaces were attributed to attractive and strong repulsive electrostatic interactions. CONCLUSIONS Assessment of colloidal stability at the lowest ionic strength is particularly effective for the development of formulations. If necessary, salts are added to enhance the colloidal stability. Sugars further improved aggregation propensities by enhancing conformational stability. These behaviors are rationally predictable according to the surface potentials of MAbs.
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Affiliation(s)
- Shuntaro Saito
- Analytical & Quality Evaluation Research Laboratories, Daiichi Sankyo Co., Ltd., 1-12-1, Shinomiya, Hiratsuka-shi, Kanagawa, 254-0014, Japan
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116
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Esfandiary R, Hayes DB, Parupudi A, Casas‐finet J, Bai S, Samra HS, Shah AU, Sathish HA. A Systematic Multitechnique Approach for Detection and Characterization of Reversible Self-Association during Formulation Development of Therapeutic Antibodies. J Pharm Sci 2013; 102:62-72. [DOI: 10.1002/jps.23369] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 10/17/2012] [Accepted: 10/19/2012] [Indexed: 01/04/2023]
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117
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Connolly BD, Petry C, Yadav S, Demeule B, Ciaccio N, Moore JMR, Shire SJ, Gokarn YR. Weak interactions govern the viscosity of concentrated antibody solutions: high-throughput analysis using the diffusion interaction parameter. Biophys J 2012; 103:69-78. [PMID: 22828333 DOI: 10.1016/j.bpj.2012.04.047] [Citation(s) in RCA: 232] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 04/19/2012] [Accepted: 04/24/2012] [Indexed: 11/30/2022] Open
Abstract
Weak protein-protein interactions are thought to modulate the viscoelastic properties of concentrated antibody solutions. Predicting the viscoelastic behavior of concentrated antibodies from their dilute solution behavior is of significant interest and remains a challenge. Here, we show that the diffusion interaction parameter (k(D)), a component of the osmotic second virial coefficient (B(2)) that is amenable to high-throughput measurement in dilute solutions, correlates well with the viscosity of concentrated monoclonal antibody (mAb) solutions. We measured the k(D) of 29 different mAbs (IgG(1) and IgG(4)) in four different solvent conditions (low and high ion normality) and found a linear dependence between k(D) and the exponential coefficient that describes the viscosity concentration profiles (|R| ≥ 0.9). Through experimentally measured effective charge measurements, under low ion normality where the electroviscous effect can dominate, we show that the mAb solution viscosity is poorly correlated with the mAb net charge (|R| ≤ 0.6). With this large data set, our results provide compelling evidence in support of weak intermolecular interactions, in contrast to the notion that the electroviscous effect is important in governing the viscoelastic behavior of concentrated mAb solutions. Our approach is particularly applicable as a screening tool for selecting mAbs with desirable viscosity properties early during lead candidate selection.
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Affiliation(s)
- Brian D Connolly
- Pharmaceutical Development, Genentech, Inc., South San Francisco, California, USA
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118
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Banks DD, Latypov RF, Ketchem RR, Woodard J, Scavezze JL, Siska CC, Razinkov VI. Native-State Solubility and Transfer Free Energy as Predictive Tools for Selecting Excipients to Include in Protein Formulation Development Studies. J Pharm Sci 2012; 101:2720-32. [DOI: 10.1002/jps.23219] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 05/08/2012] [Accepted: 05/10/2012] [Indexed: 02/01/2023]
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