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Schlesinger EB, Bernards DA, Chen HH, Feindt J, Cao J, Dix D, Romano C, Bhisitkul RB, Desai TA. Device design methodology and formulation of a protein therapeutic for sustained release intraocular delivery. Bioeng Transl Med 2019; 4:152-163. [PMID: 30680326 PMCID: PMC6336666 DOI: 10.1002/btm2.10121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 12/28/2022] Open
Abstract
Despite years of effort, sustained delivery of protein therapeutics remains an unmet need due to three primary challenges - dose, duration, and stability. The work presented here provides a design methodology for polycaprolactone reservoir-based thin film devices suitable for long-acting protein delivery to the back of the eye. First, the challenge of formulating highly concentrated protein in a device reservoir was addressed by improving stability with solubility-reducing excipients. Next, predictive correlations between design parameters and device performance were developed to provide a methodology to achieve a target product profile. Prototype devices were designed using this methodology to achieve desired device size, release rate, therapeutic payload, and protein stability, assessed by in vitro studies. Finally, prototype tolerability was established in a non-human primate model. The design methodology presented here is widely applicable to reservoir-based sustained delivery devices for proteins and provides a general device design framework.
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Affiliation(s)
- Erica B. Schlesinger
- Graduate Program in BioengineeringUniversity of CaliforniaSan FranciscoCA 94158
- Formulation Development GroupRegeneron PharmaceuticalsTarrytownNY 10591
| | - Daniel A. Bernards
- Dept. of Bioengineering and Therapeutic SciencesUniversity of CaliforniaSan FranciscoCA 94158
| | - Hunter H. Chen
- Formulation Development GroupRegeneron PharmaceuticalsTarrytownNY 10591
| | - James Feindt
- Formulation Development GroupRegeneron PharmaceuticalsTarrytownNY 10591
| | - Jingtai Cao
- Ophthalmology ResearchRegeneron PharmaceuticalsTarrytownNY 10591
| | - Daniel Dix
- Formulation Development GroupRegeneron PharmaceuticalsTarrytownNY 10591
| | - Carmelo Romano
- Ophthalmology ResearchRegeneron PharmaceuticalsTarrytownNY 10591
| | | | - Tejal A. Desai
- Graduate Program in BioengineeringUniversity of CaliforniaSan FranciscoCA 94158
- Dept. of Bioengineering and Therapeutic SciencesUniversity of CaliforniaSan FranciscoCA 94158
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202
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Cai Y, Zhao H. Protein-Induced Dissociation of Biomolecular Assemblies. ACS APPLIED BIO MATERIALS 2018; 2:470-479. [DOI: 10.1021/acsabm.8b00672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yaqian Cai
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
| | - Hanying Zhao
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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203
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Qin J, Wu X, Xia Z, Huang Z, Zhang Y, Wang Y, Fu Q, Zheng C. The effect of hyperosmolality application time on production, quality, and biopotency of monoclonal antibodies produced in CHO cell fed-batch and perfusion cultures. Appl Microbiol Biotechnol 2018; 103:1217-1229. [PMID: 30554388 DOI: 10.1007/s00253-018-9555-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 11/28/2018] [Accepted: 12/01/2018] [Indexed: 12/19/2022]
Abstract
Hyperosmolality has been commonly investigated due to its effects on the production and quality characteristics of monoclonal antibodies (mAbs) produced in CHO cell fed-batch cultures. However, the application of hyperosmolality at different times and its effect on biopotency have seldom been researched, especially in perfusion culture. In our study, different degrees of hyperosmolality induced by sodium chloride were investigated in anti-IgE rCHO cell fed-batch cultures and anti-CD52 rCHO cell perfusion cultures during the initial and stable phases. The results showed that the initial hyperosmolality group (IHG) in fed-batch and early phase of perfusion cultures exhibited significant suppression of the viable cell density yet an enhancement in specific productivity, whereas the stable hyperosmolality group (SHG) achieved higher mAb production in both fed-batch and perfusion cultures. Additionally, the SHG produced less aggregates and acidic charge variants than IHG in fed-batch culture, which differed from perfusion cultures. However, the contents of non-glycosylation heavy chain (NGHC) and man5 were higher in SHG than in IHG in fed-batch cultures at plus 60 and 120 mOsm/kg, which was similar to perfusion cultures. Furthermore, the biopotency in the IHG was higher than in the SHG at plus 60 and 120 mOsm/kg in fed-batch cultures, which is similar to complement-dependent cytotoxicity (CDC) efficacy in perfusion cultures. The biopotency of all group was acceptable, except FI3. Thus, the study shows that hyperosmolality at a certain level could be beneficial for both mAb production, quality and biopotency, which could play an important role in process development for commercial production.
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Affiliation(s)
- Jinyan Qin
- School of Pharmacy, Wuhan University, East Lake Road 185, Wuchang District, Wuhan, 430071, Hubei Province, China.,Shanghai Taiyin Biotech Co., Ltd., Shanghai, 201203, China
| | - Xiang Wu
- Shanghai Taiyin Biotech Co., Ltd., Shanghai, 201203, China
| | - Zhigang Xia
- Shanghai Taiyin Biotech Co., Ltd., Shanghai, 201203, China
| | - Zheng Huang
- School of Pharmacy, Wuhan University, East Lake Road 185, Wuchang District, Wuhan, 430071, Hubei Province, China.,Shanghai Taiyin Biotech Co., Ltd., Shanghai, 201203, China
| | - Ying Zhang
- Shanghai Taiyin Biotech Co., Ltd., Shanghai, 201203, China.,School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yanchao Wang
- Shanghai Taiyin Biotech Co., Ltd., Shanghai, 201203, China.,School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qiang Fu
- Shanghai Taiyin Biotech Co., Ltd., Shanghai, 201203, China
| | - Chen Zheng
- Shanghai Taiyin Biotech Co., Ltd., Shanghai, 201203, China.
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204
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Lu NH, How SC, Lin CY, Tsai SL, Bednarikova Z, Fedunova D, Gazova Z, Wu JW, Wang SSS. Examining the effects of dextran-based polymer-coated nanoparticles on amyloid fibrillogenesis of human insulin. Colloids Surf B Biointerfaces 2018; 172:674-683. [DOI: 10.1016/j.colsurfb.2018.09.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/24/2018] [Accepted: 09/12/2018] [Indexed: 10/28/2022]
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205
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Du X, Sun Y, Pan D, Wang Y, Ou C, Cao J. The effect of structural change on the digestibility of sarcoplasmic proteins in Nanjing dry-cured duck during processing. Poult Sci 2018; 97:4450-4457. [DOI: 10.3382/ps/pey316] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 07/02/2018] [Indexed: 02/02/2023] Open
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206
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Johnson L, Faidra Angelerou MG, Surikutchi BT, Allen S, Zelzer M, Marlow M. Low Molecular Weight Nucleoside Gelators: A Platform for Protein Aggregation Inhibition. Mol Pharm 2018; 16:462-467. [DOI: 10.1021/acs.molpharmaceut.8b01013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Litty Johnson
- School of Pharmacy, University of Nottingham, University Park
Campus, Nottingham NG72RD, United Kingdom
| | | | - Bhanu Teja Surikutchi
- School of Pharmacy, University of Nottingham, University Park
Campus, Nottingham NG72RD, United Kingdom
| | - Stephanie Allen
- School of Pharmacy, University of Nottingham, University Park
Campus, Nottingham NG72RD, United Kingdom
| | - Mischa Zelzer
- School of Pharmacy, University of Nottingham, University Park
Campus, Nottingham NG72RD, United Kingdom
| | - Maria Marlow
- School of Pharmacy, University of Nottingham, University Park
Campus, Nottingham NG72RD, United Kingdom
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207
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Wöll AK, Schütz J, Zabel J, Hubbuch J. Analysis of phase behavior and morphology during freeze-thaw applications of lysozyme. Int J Pharm 2018; 555:153-164. [PMID: 30458258 DOI: 10.1016/j.ijpharm.2018.11.047] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/09/2018] [Accepted: 11/16/2018] [Indexed: 11/26/2022]
Abstract
Knowledge of protein behavior/stability during freeze/thaw (FT) operations is essential for storage and production processes in the biopharmaceutical industry. FT stress involves freeze concentration, cold denaturation, and ice crystals formation which can result in protein aggregation. Therefore, it is important to understand the ongoing FT processes, and the influence of different solution parameters. In order to evaluate the ongoing processes during FT (up to -80°C), phase diagrams with lysozyme from chicken egg white and sodium chloride were generated. Thereby, three different buffer systems with varying buffer substances and ionic strengths at pH 3 and pH 5 were investigated. As indicators for the ongoing FT processes, the phase behavior, crystal morphology and solubility were used. An increased number of cycles led, for example, to the formation of micro crystals, sea urchin crystals - indicating LLPS and/or high supersaturation - and precipitate. Furthermore, the buffer substances had a more distinct influence on the phase behavior and morphology compared to the ionic strength differences. The solubility line itself was only shifted when distinct changes in the phase behavior could be observed. In summary, a tool was developed for using the phase behavior and especially the crystal morphology as indicator for underlying processes during FT operations.
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Affiliation(s)
- Anna Katharina Wöll
- Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Juliane Schütz
- Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Jana Zabel
- Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Jürgen Hubbuch
- Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.
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208
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Leone M, Priester MI, Romeijn S, Nejadnik MR, Mönkäre J, O'Mahony C, Jiskoot W, Kersten G, Bouwstra JA. Hyaluronan-based dissolving microneedles with high antigen content for intradermal vaccination: Formulation, physicochemical characterization and immunogenicity assessment. Eur J Pharm Biopharm 2018; 134:49-59. [PMID: 30453025 DOI: 10.1016/j.ejpb.2018.11.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/15/2018] [Accepted: 11/15/2018] [Indexed: 02/06/2023]
Abstract
The purpose of this study was to optimize the manufacturing of dissolving microneedles (dMNs) and to increase the antigen loading in dMNs to investigate the effect on their physicochemical properties. To achieve this, a novel single-array wells polydimethylsiloxane mold was designed, minimizing antigen wastage during fabrication and achieving homogeneous antigen distribution among the dMN arrays. Using this mold, hyaluronan (HA)-based dMNs were fabricated and tested for maximal ovalbumin (OVA) content. dMNs could be fabricated with an OVA:HA ratio as high as 1:1 (w/w), without compromising their properties such as shape and penetration into the ex vivo human skin, even after storage at high humidity and temperature. High antigen loading did not induce protein aggregation during dMN fabrication as demonstrated by complementary analytical methods. However, the dissolution rate in ex vivo human skin decreased with increasing antigen loading. About 2.7 µg OVA could be delivered in mice by using a single array with an OVA:HA ratio of 1:3 (w/w). Intradermal vaccination with dMNs induced an immune response similar as subcutaneous injection and faster than after hollow microneedle injection. In conclusion, results suggest that (i) the polydimethylsiloxane mold design has an impact on the manufacturing of dMNs, (ii) the increase in antigen loading in dMNs affects the microneedle dissolution and (iii) dMNs are a valid alternative for vaccine administration over conventional injection.
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Affiliation(s)
- Mara Leone
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Marjolein I Priester
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Stefan Romeijn
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - M Reza Nejadnik
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Juha Mönkäre
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Conor O'Mahony
- Tyndall National Institute, University College Cork, Cork T12 R5CP, Ireland
| | - Wim Jiskoot
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Gideon Kersten
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands; Institute for Translational Vaccinology (Intravacc), Antonie van Leeuwenhoeklaan 9, 3721MA Bilthoven, the Netherlands
| | - Joke A Bouwstra
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands.
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209
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Janc T, Vlachy V, Lukšič M. Calorimetric studies of interactions between low molecular weight salts and bovine serum albumin in water at pH values below and above the isoionic point. J Mol Liq 2018; 270:74-80. [PMID: 30872874 DOI: 10.1016/j.molliq.2017.10.105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Isothermal titration calorimetry was used to determine the temperature and salt concentration dependence of the enthalpy of mixing, Δmix H, of bovine serum albumin (BSA) in aqueous buffer solutions with several low molecular weight salts. Three buffers were used: acetate (pH = 4.0), MOPS (7.2), and borate (9.2). Since the isoionic point of BSA is at pI ≈ 4.7, the net charge of BSA in acetate buffer was positive (≈ +20), while in the other two buffer solutions it was negative (≈ -15 in MOPS and ≈ -25 in borate). The majority of the recorded heat effects were exothermic, while only at pH = 9.2 a weak endothermic effect upon mixing BSA with LiCl, NaCl, and KCl was observed. For all buffer solutions the absolute values of Δmix H of sodium salts followed the order: NaCl < NaBr < NaNO3 < NaI < NaSCN, which is the reverse Hofmeister series for anions. The magnitude of the effects was the largest in acetate buffer and decreased with an increasing pH value of the solution. While the effect of varying the anion of the added salts was strongly pronounced at all pH values, the effect of the cation (LiCl, NaCl, KCl, RbCl and CsCl salts) was weak. The most interesting feature of the results obtained for pH > pI was the fact that Δmix H were considerably more sensitive to the anion (co-ion to the net BSA charge) than to the cation species. This indicated that anions interacted quite strongly with the BSA even at pH values where the net charge of the protein was negative. We showed that Δmix H at high addition of salts correlated well with the enthalpy of hydration of the corresponding salt anion. This finding suggested, consistently with some previous studies, that a part of the exothermic contribution to Δmix H originated from the hydration changes upon the protein-salt interaction. Theoretical analysis, based on the primitive model of highly asymmetric electrolyte solutions solved within the mean spherical approximation, was used to estimate Coulomb effects upon mixing.
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Affiliation(s)
- Tadeja Janc
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Vojko Vlachy
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Miha Lukšič
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, SI-1000 Ljubljana, Slovenia
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210
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Ngatuni MJ, Trinh HM, Pal D, Mitra AK. Novel Random Triblock Copolymers for Sustained Delivery of Macromolecules for the Treatment of Ocular Diseases. AAPS PharmSciTech 2018; 19:3871-3885. [PMID: 30306402 DOI: 10.1208/s12249-018-1172-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 08/31/2018] [Indexed: 01/08/2023] Open
Abstract
The objective of this study is to design, develop, and synthesize novel random triblock (RTB) copolymers for sustained delivery of macromolecules. RTB copolymers have not been utilized for the delivery of macromolecules for ocular diseases. RTB copolymers comprising of polyethylene glycol, glycolide, and ɛ-caprolactone blocks were synthesized and assessed for their molecular weights and purity using 1H-NMR spectroscopy, gel permeation chromatography, FTIR (functionality), and XRD (crystallinity). No toxicity was observed when ocular cell lines were treated with RTB copolymers. These materials were applied for encapsulation of peptides and proteins (catalase, IgG, BSA, IgG Fab fragment, lysozyme, insulin, and octreotide) in nanoparticles. Particle size ranged from 202.41 ± 2.45 to 300.1 ± 3.11 nm depending on the molecular size and geometry of proteins/peptides. Polydispersity indices were between 0.26 ± 0.02 and 0.46 ± 0.07 respectively. Percentage entrapment efficiency and drug loading ranged from 83.44 ± 2.24 to 45.35 ± 5.53 and 21.56 ± 0.46 to 13.08 ± 1.35 respectively depending on molecular weights of peptides or proteins. A sustained in vitro release of macromolecule was observed over 3-month period. These results suggest that RTB copolymers may be suitable for sustained delivery systems for various macromolecules for different diseases including ocular diseases.
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211
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Hemamalini R, Khare SK. Halophilic lipase does forms catalytically active aggregates: Evidence from Marinobacter sp. EMB5 lipase (LipEMB5). Int J Biol Macromol 2018; 119:172-179. [DOI: 10.1016/j.ijbiomac.2018.07.097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/12/2018] [Accepted: 07/14/2018] [Indexed: 10/28/2022]
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212
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Hajavi J, Ebrahimian M, Sankian M, Khakzad MR, Hashemi M. Optimization of PLGA formulation containing protein or peptide-based antigen: Recent advances. J Biomed Mater Res A 2018; 106:2540-2551. [DOI: 10.1002/jbm.a.36423] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/25/2018] [Accepted: 03/15/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Jafar Hajavi
- Department of Basic Sciences, Faculty of Allied Medicine; Gonabad University of Medical Sciences; Gonabad Iran
- Immunology Research Center, Medical School, Mashhad University of Medical Sciences; Mashhad Iran
| | - Mahboubeh Ebrahimian
- Division of Biotechnology, Faculty of Veterinary Medicine; Ferdowsi University of Mashhad; Mashhad Iran
| | - Mojtaba Sankian
- Immunology Research Center, Medical School, Mashhad University of Medical Sciences; Mashhad Iran
- Department of Immunology, Faculty of Medicine; Mashhad University of Medical Sciences; Mashhad Iran
| | - Mohammad Reza Khakzad
- Innovated Medical Research Center & Department of Immunology; Mashhad Branch, Islamic Azad University; Mashhad Iran
| | - Maryam Hashemi
- Nanotechnology Research Center; Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences; Mashhad Iran
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213
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Use of Cyclodextrin as a Novel Agent in the SEC-HPLC Mobile Phase to Mitigate the Interactions of Proteins or Peptide or their Impurities with the Residual Silanols of Commercial SEC-HPLC Columns with Improved Separation and Resolution. Pharm Res 2018; 35:168. [DOI: 10.1007/s11095-018-2446-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/14/2018] [Indexed: 10/28/2022]
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214
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Biophysical virus particle specific characterization to sharpen the definition of virus stability. Eur J Pharm Biopharm 2018; 132:62-69. [PMID: 30118752 DOI: 10.1016/j.ejpb.2018.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/10/2018] [Accepted: 08/13/2018] [Indexed: 12/31/2022]
Abstract
Vaccine thermostability is key to successful global immunization programs as it may have a significant impact on the continuous cold-chain maintenance logistics, as well as affect vaccine potency. Modern biological and biophysical techniques were combined to in-depth characterize the thermostability of a formulated rabies virus (RABV) in terms of antigenic and genomic titer, virus particle count and aggregation state. Tunable resistive pulse sensing (TRPS) and nanoparticle tracking analysis (NTA) were used to count virus particles while simultaneously determining their size distribution. RABV antigenicity was assessed by NTA using a monoclonal antibody that recognize a rabies glycoprotein (G protein) conformational epitope, enabling to specifically count antigenic rabies viruses. Agreement between antigenicity results from NTA and conventional method, as ELISA, was demonstrated. Additionally, NTA and ELISA showed mirrored loss of RABV antigenicity during forced degradation studies performed between 5 °C and 45 °C temperature exposure for one month. Concomitant with decreased antigenicity, emergence of RABV particle populations larger than those expected for rabies family viruses was observed, suggesting RABV aggregation induced by thermal stress. Finally, using a kinetic-based modeling approach to explore forced degradation antigenicity data (NTA, ELISA), a two-step model accurately describing antigenicity loss was identified. This model predicted a RABV shelf-life of more than 3 years at 5 °C; significant loss of antigenicity was predicted for samples maintained several months at ambient temperature. This thorough characterization of RABV forced degradation study originally provided a time-temperature mapping of RABV stability.
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215
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Reijers JAA, Dane MJC, van Zonneveld AJ, Burggraaf J, Moerland M. Potential Influence of Endothelial Adsorption on the Delayed Time to Maximum Concentration of Biopharmaceuticals. Eur J Drug Metab Pharmacokinet 2018; 43:103-113. [PMID: 28795390 PMCID: PMC5794845 DOI: 10.1007/s13318-017-0430-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background and objectives Maximum plasma concentration of biopharmaceuticals sometimes occurs long after completion of intravenous infusion. The objective of this research was to study the hypothetical adsorption of biopharmaceuticals to endothelium and infusion material, which may theoretically explain this phenomenon. Methods Infusion procedures were mimicked in an artificial vessel covered with a confluent monolayer of endothelial cells. Three monoclonal antibodies (MAbs) and C1 inhibitor were studied. Results Adsorption of MAbs to endothelium was observed followed by release when the vessel was subsequently perfused with buffer. Adsorption to infusion material also occurred to various degrees and in a seemingly random fashion, with a loss of up to 15% during a single flush of the line, but release from the line was not seen. Conclusions Our results indicate that adsorption of biopharmaceuticals to endothelium can occur. This observation can explain the increase in plasma concentration after completion of intravenous administration.
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Affiliation(s)
- Joannes A A Reijers
- Centre for Human Drug Research (CHDR), Zernikedreef 8, 2333 CL, Leiden, The Netherlands. .,Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
| | - Martijn J C Dane
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory of Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Anton Jan van Zonneveld
- Department of Internal Medicine (Nephrology) and the Einthoven Laboratory of Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Jacobus Burggraaf
- Centre for Human Drug Research (CHDR), Zernikedreef 8, 2333 CL, Leiden, The Netherlands
| | - Matthijs Moerland
- Centre for Human Drug Research (CHDR), Zernikedreef 8, 2333 CL, Leiden, The Netherlands
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216
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Kell DB, Pretorius E. No effects without causes: the Iron Dysregulation and Dormant Microbes hypothesis for chronic, inflammatory diseases. Biol Rev Camb Philos Soc 2018; 93:1518-1557. [PMID: 29575574 PMCID: PMC6055827 DOI: 10.1111/brv.12407] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 02/12/2018] [Accepted: 02/15/2018] [Indexed: 12/11/2022]
Abstract
Since the successful conquest of many acute, communicable (infectious) diseases through the use of vaccines and antibiotics, the currently most prevalent diseases are chronic and progressive in nature, and are all accompanied by inflammation. These diseases include neurodegenerative (e.g. Alzheimer's, Parkinson's), vascular (e.g. atherosclerosis, pre-eclampsia, type 2 diabetes) and autoimmune (e.g. rheumatoid arthritis and multiple sclerosis) diseases that may appear to have little in common. In fact they all share significant features, in particular chronic inflammation and its attendant inflammatory cytokines. Such effects do not happen without underlying and initially 'external' causes, and it is of interest to seek these causes. Taking a systems approach, we argue that these causes include (i) stress-induced iron dysregulation, and (ii) its ability to awaken dormant, non-replicating microbes with which the host has become infected. Other external causes may be dietary. Such microbes are capable of shedding small, but functionally significant amounts of highly inflammagenic molecules such as lipopolysaccharide and lipoteichoic acid. Sequelae include significant coagulopathies, not least the recently discovered amyloidogenic clotting of blood, leading to cell death and the release of further inflammagens. The extensive evidence discussed here implies, as was found with ulcers, that almost all chronic, infectious diseases do in fact harbour a microbial component. What differs is simply the microbes and the anatomical location from and at which they exert damage. This analysis offers novel avenues for diagnosis and treatment.
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Affiliation(s)
- Douglas B. Kell
- School of ChemistryThe University of Manchester, 131 Princess StreetManchesterLancsM1 7DNU.K.
- The Manchester Institute of BiotechnologyThe University of Manchester, 131 Princess StreetManchesterLancsM1 7DNU.K.
- Department of Physiological SciencesStellenbosch University, Stellenbosch Private Bag X1Matieland7602South Africa
| | - Etheresia Pretorius
- Department of Physiological SciencesStellenbosch University, Stellenbosch Private Bag X1Matieland7602South Africa
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217
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Effects of allantoin and dimethyl sulfoxide on the thermal aggregation of lysozyme. Int J Biol Macromol 2018; 119:180-185. [PMID: 30009897 DOI: 10.1016/j.ijbiomac.2018.07.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 07/02/2018] [Accepted: 07/11/2018] [Indexed: 11/24/2022]
Abstract
Allantoin is used to suppress protein aggregation without decreasing the melting temperature. However, the solubility of allantoin in water or buffer solutions is too low (approximately 30 mM at ambient temperature) to be used as a protein aggregation suppressor in various situations. Here we show that a high-concentration solution of allantoin in neat dimethyl sulfoxide (DMSO) is useful as a stock solution for the additive that controls protein aggregation. The allantoin concentration from 10 to 100 mM in 10% (v/v) DMSO significantly suppressed the thermal aggregation of hen egg white lysozyme as a model protein, with increasing allantoin concentration. The residual activity of lysozyme in 10% DMSO and 100 mM allantoin after heating at 90 °C for 10 min was increased >3-fold compared to that without allantoin. Thus, it was concluded that allantoin in DMSO is an effective stock solution for practical application in enhancing the recovery of enzymatic activity and suppressing the formation of small aggregate of protein.
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218
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Aleandri S, Vaccaro A, Armenta R, Völker AC, Kuentz M. Dynamic Light Scattering of Biopharmaceutics-Can Analytical Performance Be Enhanced by Laser Power? Pharmaceutics 2018; 10:pharmaceutics10030094. [PMID: 30018274 PMCID: PMC6161136 DOI: 10.3390/pharmaceutics10030094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/10/2018] [Accepted: 07/13/2018] [Indexed: 11/30/2022] Open
Abstract
Background: Dynamic light scattering (DLS) is an important tool to characterize colloidal systems and adequate sizing is particularly critical in the field of protein formulations. Among the different factors that can influence the measurement result, the effect of laser power has so far not been studied thoroughly. Methods: The sensitivity of a DLS instrument was first considered on a theoretical level, followed by experiments using DLS instruments, equipped with two different lasers of (nominal) 45 mW, and 100 mW, respectively. This work analyzes dilute colloidal dispersions of lysozyme as model protein. Results: Theoretical findings agreed with experiments in that only enhanced laser power of 100 mW laser allowed measuring a 0.1 mg/mL protein dispersion in a reliable manner. Results confirmed the usefulness of the presented theoretical considerations in improving a general understanding of the limiting factors in DLS. Conclusions: Laser power is a critical aspect regarding adequate colloidal analysis by DLS. Practical guidance is provided to help scientists specifically with measuring dilute samples to choose both an optimal instrument configuration as well as a robust experimental procedure.
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Affiliation(s)
- Simone Aleandri
- Institute of Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, Gründenstrasse 40, 4132 Muttenz, Switzerland.
| | - Andrea Vaccaro
- LS Instruments, Passage du Cardinal 1, 1700 Fribourg, Switzerland.
| | - Ricardo Armenta
- LS Instruments, Passage du Cardinal 1, 1700 Fribourg, Switzerland.
| | | | - Martin Kuentz
- Institute of Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, Gründenstrasse 40, 4132 Muttenz, Switzerland.
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219
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Ettah I, Ashton L. Engaging with Raman Spectroscopy to Investigate Antibody Aggregation. Antibodies (Basel) 2018; 7:E24. [PMID: 31544876 PMCID: PMC6640673 DOI: 10.3390/antib7030024] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 07/04/2018] [Accepted: 07/04/2018] [Indexed: 11/24/2022] Open
Abstract
In the last decade, a number of studies have successfully demonstrated Raman spectroscopy as an emerging analytical technique for monitoring antibody aggregation, especially in the context of drug development and formulation. Raman spectroscopy is a robust method for investigating protein conformational changes, even in highly concentrated antibody solutions. It is non-destructive, reproducible and can probe samples in an aqueous environment. In this review, we focus on the application and challenges associated with using Raman spectroscopy as a tool to study antibody aggregates.
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Affiliation(s)
- Ilokugbe Ettah
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, UK.
| | - Lorna Ashton
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, UK.
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220
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A Novel gp41-Binding Adnectin with Potent Anti-HIV Activity Is Highly Synergistic when Linked to a CD4-Binding Adnectin. J Virol 2018; 92:JVI.00421-18. [PMID: 29743355 DOI: 10.1128/jvi.00421-18] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 04/26/2018] [Indexed: 12/27/2022] Open
Abstract
The N17 region of gp41 in HIV-1 is the most conserved region in gp160. mRNA selection technologies were used to identify an adnectin that binds to this region and inhibits gp41-induced membrane fusion. Additional selection conditions were used to optimize the adnectin to greater potency (5.4 ± 2.6 nM) against HIV-1 and improved binding affinity for an N17-containing helical trimer (0.8 ± 0.4 nM). Resistance to this adnectin mapped to a single Glu-to-Arg change within the N17 coding region. The optimized adnectin (6200_A08) exhibited high potency and broad-spectrum activity against 123 envelope proteins and multiple clinical virus isolates, although certain envelope proteins did exhibit reduced susceptibility to 6200_A08 alone. The reduced potency could not be correlated with sequence changes in the target region and was thought to be the result of faster kinetics of fusion mediated by these envelope proteins. Optimized linkage of 6200_A08 with a previously characterized adnectin targeting CD4 produced a highly synergistic molecule, with the potency of the tandem molecule measured at 37 ± 1 pM. In addition, these tandem molecules now exhibited few potency differences against the same panel of envelope proteins with reduced susceptibility to 6200_A08 alone, providing evidence that they did not have intrinsic resistance to 6200_A08 and that coupling 6200_A08 with the anti-CD4 adnectin may provide a higher effective on rate for gp41 target engagement.IMPORTANCE There continue to be significant unmet medical needs for patients with HIV-1 infection. One way to improve adherence and decrease the likelihood of drug-drug interactions in HIV-1-infected patients is through the development of long-acting biologic inhibitors. This study describes the development and properties of an adnectin molecule that targets the most conserved region of the gp41 protein and inhibits HIV-1 with good potency. Moreover, when fused to a similar adnectin targeted to the human CD4 protein, the receptor for HIV-1, significant synergies in potency and efficacy are observed. These inhibitors are part of an effort to develop a larger biologic molecule that functions as a long-acting self-administered regimen for patients with HIV-1 infection.
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221
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Khosrowabadi E, Takalloo Z, Sajedi RH, Khajeh K. Improving the soluble expression of aequorin in Escherichia coli using the chaperone-based approach by co-expression with artemin. Prep Biochem Biotechnol 2018; 48:483-489. [DOI: 10.1080/10826068.2018.1466152] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Elaheh Khosrowabadi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Zeinab Takalloo
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Reza H. Sajedi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Khosro Khajeh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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222
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Tzeng SY, McHugh KJ, Behrens AM, Rose S, Sugarman JL, Ferber S, Langer R, Jaklenec A. Stabilized single-injection inactivated polio vaccine elicits a strong neutralizing immune response. Proc Natl Acad Sci U S A 2018; 115:E5269-E5278. [PMID: 29784798 PMCID: PMC6003376 DOI: 10.1073/pnas.1720970115] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Vaccination in the developing world is hampered by limited patient access, which prevents individuals from receiving the multiple injections necessary for protective immunity. Here, we developed an injectable microparticle formulation of the inactivated polio vaccine (IPV) that releases multiple pulses of stable antigen over time. To accomplish this, we established an IPV stabilization strategy using cationic polymers for pH modulation to enhance traditional small-molecule-based stabilization methods. We investigated the mechanism of this strategy and showed that it was broadly applicable to all three antigens in IPV. Our lead formulations released two bursts of IPV 1 month apart, mimicking a typical vaccination schedule in the developing world. One injection of the controlled-release formulations elicited a similar or better neutralizing response in rats, considered the correlate of protection in humans, than multiple injections of liquid vaccine. This single-administration vaccine strategy has the potential to improve vaccine coverage in the developing world.
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Affiliation(s)
- Stephany Y Tzeng
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD 21231
| | - Kevin J McHugh
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Adam M Behrens
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Sviatlana Rose
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - James L Sugarman
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Shiran Ferber
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Robert Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139;
| | - Ana Jaklenec
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139;
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223
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Elucidating Bauhinia variegata lectin/phosphatidylcholine interactions in lectin-containing liposomes. J Colloid Interface Sci 2018; 519:232-241. [DOI: 10.1016/j.jcis.2018.02.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/06/2018] [Accepted: 02/08/2018] [Indexed: 01/20/2023]
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224
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Kastelic M, Vlachy V. Theory for the Liquid-Liquid Phase Separation in Aqueous Antibody Solutions. J Phys Chem B 2018; 122:5400-5408. [PMID: 29338267 PMCID: PMC5980754 DOI: 10.1021/acs.jpcb.7b11458] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This study presents the theory for liquid-liquid phase separation for systems of molecules modeling monoclonal antibodies. Individual molecule is depicted as an assembly of seven hard spheres, organized to mimic the Y-shaped antibody. We consider the antibody-antibody interactions either through Fab, Fab' (two Fab fragments may be different), or Fc domain. Interaction between these three domains of the molecule (hereafter denoted as A, B, and C, respectively) is modeled by a short-range square-well attraction. To obtain numerical results for the model under study, we adapt Wertheim's thermodynamic perturbation theory. We use this model to calculate the liquid-liquid phase separation curve and the second virial coefficient B2. Various interaction scenarios are examined to see how the strength of the site-site interactions and their range shape the coexistence curve. In the asymmetric case, where an attraction between two sites is favored and the interaction energies for the other sites kept constant, critical temperature first increases and than strongly decreases. Some more microscopic information, for example, the probability for the particular two sites to be connected, has been calculated. Analysis of the experimental liquid-liquid phase diagrams, obtained from literature, is presented. In addition, we calculate the second virial coefficient under conditions leading to the liquid-liquid phase separation and present this quantity on the graph B2 versus protein concentration.
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Affiliation(s)
| | - Vojko Vlachy
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
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225
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O'Brien CJ, Calero-Rubio C, Razinkov VI, Robinson AS, Roberts CJ. Biophysical characterization and molecular simulation of electrostatically driven self-association of a single-chain antibody. Protein Sci 2018; 27:1275-1285. [PMID: 29637646 DOI: 10.1002/pro.3415] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/25/2018] [Accepted: 03/26/2018] [Indexed: 12/30/2022]
Abstract
Colloidal protein-protein interactions (PPI) are often expected to impact key behaviors of proteins in solution, such as aggregation rates and mechanisms, aggregate structure, protein solubility, and solution viscosity. PPI of an anti-fluorescein single chain antibody variable fragment (scFv) were characterized experimentally at low to intermediate ionic strength using a combination of static light scattering and sedimentation equilibrium ultracentrifugation. Surprisingly, the results indicated that interactions were strongly net-attractive and electrostatics promoted self-association. Only repulsive interactions were expected based on prior work and calculations based a homology model of a related scFv crystal structure. However, the crystal structure lacks the charged, net-neutral linker sequence. PyRosetta was used to generate a set of scFv structures with different linker conformations, and coarse-grained Monte Carlo simulations were used to evaluate the effect of different linker configurations via second osmotic virial coefficient (B22 ) simulations. The results show that the configuration of the linker has a significant effect on the calculated B22 values, and can result in strong electrostatic attractions between oppositely charged residues on the protein surface. This is particularly relevant for development of non-natural antibody products, where charged linkers and other loop regions may be prevalent. The results also provide a preliminary computational framework to evaluate the effect of unstructured linkers on experimental protein-protein interaction parameters such as B22 .
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Affiliation(s)
- Christopher J O'Brien
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware, 19716
| | - Cesar Calero-Rubio
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware, 19716
| | | | - Anne S Robinson
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware, 19716.,Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Los Angeles, 70118
| | - Christopher J Roberts
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware, 19716
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226
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Fabrication of uniform enzyme-immobilized carbohydrate microparticles with high enzymatic activity and stability via spray drying and spray freeze drying. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.02.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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227
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Wen L, Lyu M, Xiao H, Lan H, Zuo Z, Yin Z. Protein Aggregation and Performance Optimization Based on Microconformational Changes of Aromatic Hydrophobic Regions. Mol Pharm 2018; 15:2257-2267. [PMID: 29694051 DOI: 10.1021/acs.molpharmaceut.8b00115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Lili Wen
- Key Laboratory of Drug Targeting and Drug Delivery Systems, West China School of Pharmacy, Sichuan University, Chengdu 610041, Sichuan Province, People’s Republic of China
| | - Man Lyu
- Key Laboratory of Drug Targeting and Drug Delivery Systems, West China School of Pharmacy, Sichuan University, Chengdu 610041, Sichuan Province, People’s Republic of China
| | - Huashuai Xiao
- Key Laboratory of Drug Targeting and Drug Delivery Systems, West China School of Pharmacy, Sichuan University, Chengdu 610041, Sichuan Province, People’s Republic of China
| | - Hairong Lan
- Key Laboratory of Drug Targeting and Drug Delivery Systems, West China School of Pharmacy, Sichuan University, Chengdu 610041, Sichuan Province, People’s Republic of China
| | - Zhili Zuo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Zongning Yin
- Key Laboratory of Drug Targeting and Drug Delivery Systems, West China School of Pharmacy, Sichuan University, Chengdu 610041, Sichuan Province, People’s Republic of China
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228
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Rajan R, Suzuki Y, Matsumura K. Zwitterionic Polymer Design that Inhibits Aggregation and Facilitates Insulin Refolding: Mechanistic Insights and Importance of Hydrophobicity. Macromol Biosci 2018; 18:e1800016. [DOI: 10.1002/mabi.201800016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 02/21/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Robin Rajan
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive Singapore 637459 Singapore
| | - Yu Suzuki
- Tenure-Track Program for Innovative Research; University of Fukui; 3-9-1 Bunkyo Fukui-shi Fukui 910-8507 Japan
| | - Kazuaki Matsumura
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
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229
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MS-based conformation analysis of recombinant proteins in design, optimization and development of biopharmaceuticals. Methods 2018; 144:134-151. [PMID: 29678586 DOI: 10.1016/j.ymeth.2018.04.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/10/2018] [Accepted: 04/12/2018] [Indexed: 01/18/2023] Open
Abstract
Mass spectrometry (MS)-based methods for analyzing protein higher order structures have gained increasing application in the field of biopharmaceutical development. The predominant methods used in this area include native MS, hydrogen deuterium exchange-MS, covalent labeling, cross-linking and limited proteolysis. These MS-based methods will be briefly described in this article, followed by a discussion on how these methods contribute at different stages of discovery and development of protein therapeutics.
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230
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Herrington WF, Singh GP, Wu D, Barone PW, Hancock W, Ram RJ. Optical Detection of Degraded Therapeutic Proteins. Sci Rep 2018; 8:5089. [PMID: 29572496 PMCID: PMC5865131 DOI: 10.1038/s41598-018-23409-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/01/2018] [Indexed: 11/09/2022] Open
Abstract
The quality of therapeutic proteins such as hormones, subunit and conjugate vaccines, and antibodies is critical to the safety and efficacy of modern medicine. Identifying malformed proteins at the point-of-care can prevent adverse immune reactions in patients; this is of special concern when there is an insecure supply chain resulting in the delivery of degraded, or even counterfeit, drug product. Identification of degraded protein, for example human growth hormone, is demonstrated by applying automated anomaly detection algorithms. Detection of the degraded protein differs from previous applications of machine-learning and classification to spectral analysis: only example spectra of genuine, high-quality drug products are used to construct the classifier. The algorithm is tested on Raman spectra acquired on protein dilutions typical of formulated drug product and at sample volumes of 25 µL, below the typical overfill (waste) volumes present in vials of injectable drug product. The algorithm is demonstrated to correctly classify anomalous recombinant human growth hormone (rhGH) with 92% sensitivity and 98% specificity even when the algorithm has only previously encountered high-quality drug product.
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Affiliation(s)
- William F Herrington
- Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States.
| | - Gajendra P Singh
- Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States
| | - Di Wu
- Northeastern University, Boston, Massachusetts, 02115, United States
| | - Paul W Barone
- Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States
| | - William Hancock
- Northeastern University, Boston, Massachusetts, 02115, United States
| | - Rajeev J Ram
- Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States
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231
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Nishinami S, Yoshizawa S, Arakawa T, Shiraki K. Allantoin and hydantoin as new protein aggregation suppressors. Int J Biol Macromol 2018; 114:497-503. [PMID: 29505874 DOI: 10.1016/j.ijbiomac.2018.03.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/21/2018] [Accepted: 03/02/2018] [Indexed: 01/08/2023]
Abstract
Allantoin is widely used in pharmaceutical and cosmetic products, and is composed of a hydantoin ring and a ureido group. Recent reports showed that allantoin suppresses thermal aggregation of hen egg white lysozyme (LYZ). However, structural insight into the properties of allantoin on protein aggregation and whether allantoin controls the aggregation of other proteins under different stress conditions remain unclear. Here we studied the structural properties of allantoin in terms of its effects on protein aggregation by comparing allantoin with urea and hydantoin. Furthermore, we analyzed the effects of allantoin and its derivatives on the aggregation of LYZ, carbonic anhydrase from bovine erythrocytes (BCA), albumin from chicken egg white (OVA), and immunoglobulin G (IgG) by various stresses in comparison with arginine. These four proteins are widely different in charged state and molecular size. Allantoin suppressed the aggregation and inactivation of LYZ comparing to arginine without affecting the melting temperature of proteins, and was responsible for the slightly improved formation of soluble oligomers and insoluble aggregates of IgG with thermal and acidic stresses. In contrast, hydantoin increased the solubility of aromatic amino acids more effectively than arginine and allantoin. The structural properties underlying the observed effects of allantoin as an aggregation suppressor include hydrophobic interactions between hydantoin moiety and aromatic ring on the surface of proteins, which is reflected on the difference between allantoin and arginine. These results show that the backbone of hydantoin ring may be a new category of additives for development of small aggregation suppressors.
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Affiliation(s)
- Suguru Nishinami
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Shunsuke Yoshizawa
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Tsutomu Arakawa
- Alliance Protein Laboratories, San Diego, CA 92121, United States
| | - Kentaro Shiraki
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
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232
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Sridhar BV, Janczy JR, Hatlevik Ø, Wolfson G, Anseth KS, Tibbitt MW. Thermal Stabilization of Biologics with Photoresponsive Hydrogels. Biomacromolecules 2018; 19:740-747. [PMID: 29394044 DOI: 10.1021/acs.biomac.7b01507] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Modern medicine, biological research, and clinical diagnostics depend on the reliable supply and storage of complex biomolecules. However, biomolecules are inherently susceptible to thermal stress and the global distribution of value-added biologics, including vaccines, biotherapeutics, and Research Use Only (RUO) proteins, requires an integrated cold chain from point of manufacture to point of use. To mitigate reliance on the cold chain, formulations have been engineered to protect biologics from thermal stress, including materials-based strategies that impart thermal stability via direct encapsulation of the molecule. While direct encapsulation has demonstrated pronounced stabilization of proteins and complex biological fluids, no solution offers thermal stability while enabling facile and on-demand release from the encapsulating material, a critical feature for broad use. Here we show that direct encapsulation within synthetic, photoresponsive hydrogels protected biologics from thermal stress and afforded user-defined release at the point of use. The poly(ethylene glycol) (PEG)-based hydrogel was formed via a bioorthogonal, click reaction in the presence of biologics without impact on biologic activity. Cleavage of the installed photolabile moiety enabled subsequent dissolution of the network with light and release of the encapsulated biologic. Hydrogel encapsulation improved stability for encapsulated enzymes commonly used in molecular biology (β-galactosidase, alkaline phosphatase, and T4 DNA ligase) following thermal stress. β-galactosidase and alkaline phosphatase were stabilized for 4 weeks at temperatures up to 60 °C, and for 60 min at 85 °C for alkaline phosphatase. T4 DNA ligase, which loses activity rapidly at moderately elevated temperatures, was protected during thermal stress of 40 °C for 24 h and 60 °C for 30 min. These data demonstrate a general method to employ reversible polymer networks as robust excipients for thermal stability of complex biologics during storage and shipment that additionally enable on-demand release of active molecules at the point of use.
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Affiliation(s)
- Balaji V Sridhar
- Nanoly Bioscience, Inc. , Denver , Colorado 80231 , United States
| | - John R Janczy
- Nanoly Bioscience, Inc. , Denver , Colorado 80231 , United States
| | - Øyvind Hatlevik
- Nanoly Bioscience, Inc. , Denver , Colorado 80231 , United States
| | - Gabriel Wolfson
- Nanoly Bioscience, Inc. , Denver , Colorado 80231 , United States
| | | | - Mark W Tibbitt
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering , ETH Zürich , 8092 Zürich , Switzerland
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233
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Hartl J, Peschel A, Johannsmann D, Garidel P. Characterizing protein-protein-interaction in high-concentration monoclonal antibody systems with the quartz crystal microbalance. Phys Chem Chem Phys 2018; 19:32698-32707. [PMID: 29199300 DOI: 10.1039/c7cp05711c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Making use of a quartz crystal microbalance (QCM), concentrated solutions of therapeutic antibodies were studied with respect to their behavior under shear excitation with frequencies in the MHz range. At high protein concentration and neutral pH, viscoelastic behavior was found in the sense that the storage modulus, G', was nonzero. Fits of the frequency dependence of G'(ω) and G''(ω) (G'' being the loss modulus) using the Maxwell-model produced good agreement with the experimental data. The fit parameters were the relaxation time, τ, and the shear modulus at the inverse relaxation time, G* (at the "cross-over frequency" ωC = 1/τ). The influence of two different pharmaceutical excipients (histidine and citrate) was studied at variable concentrations of the antibody and variable pH. In cases, where viscoelasticity was observed, G* was in the range of a few kPa, consistent with entropy-driven interactions. τ was small at low pH, where the antibody carries a positive charge. τ increased with increasing pH. The relaxation time τ was found to be correlated with other parameters quantifying protein-protein interactions, namely the steady shear viscosity (η), the second osmotic virial coefficient as determined with both self-interaction chromatography (B22,SIC) and static light scattering (B22,SLS), and the diffusion interaction parameter as determined with dynamic light scattering (kD). While B22 and kD describe protein-protein interactions in diluted samples, the QCM can be applied to concentrated solutions, thereby being sensitive to higher-order protein-protein interactions.
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Affiliation(s)
- Josef Hartl
- Boehringer Ingelheim Pharma GmbH and Co. KG, Protein Science, Birkendorfer Str. 65, 88397 Biberach/Riss, Germany
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234
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Yoshizawa S, Oki S, Arakawa T, Shiraki K. Trimethylamine N-oxide (TMAO) is a counteracting solute of benzyl alcohol for multi-dose formulation of immunoglobulin. Int J Biol Macromol 2018; 107:984-989. [DOI: 10.1016/j.ijbiomac.2017.09.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 09/15/2017] [Accepted: 09/18/2017] [Indexed: 11/28/2022]
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Tokhadze N, Chennell P, Le Basle Y, Sautou V. Stability of infliximab solutions in different temperature and dilution conditions. J Pharm Biomed Anal 2018; 150:386-395. [DOI: 10.1016/j.jpba.2017.12.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 12/04/2017] [Accepted: 12/06/2017] [Indexed: 01/09/2023]
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236
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Kim J, Krebs MRH, Trout BL. Retracted:Molecular characterization of excipients’ preferential interactions with therapeutic monoclonal antibodies. J Pharm Pharmacol 2018; 70:289-304. [DOI: 10.1111/jphp.12787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 06/18/2017] [Indexed: 10/19/2022]
Abstract
AbstractRetraction: Molecular characterization of excipients’ preferential interactions with therapeutic monoclonal antibodies by Jehoon Kim, Mark R. H. Krebs and Bernhardt L. TroutThe above article from the Journal of Pharmacy and Pharmacology, first published online on 4 August 2017 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the authors, the journal Editor-in-Chief, Professor David Jones, and John Wiley & Sons Ltd. The authors discovered that the analysis of simulations was faulty making the data incorrect.ReferenceKim J et al. Molecular characterization of excipients’ preferential interactions with therapeutic monoclonal antibodies. J Pharm Pharmacol 2017. https://doi.org/10.1111/jphp.12787
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Affiliation(s)
- Jehoon Kim
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Mark R H Krebs
- Protein Pharmaceutical Development, Biogen, Cambridge, MA, USA
| | - Bernhardt L Trout
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
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237
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Wang G, Bondarenko PV, Kaltashov IA. Multi-step conformational transitions in heat-treated protein therapeutics can be monitored in real time with temperature-controlled electrospray ionization mass spectrometry. Analyst 2018; 143:670-677. [PMID: 29303166 DOI: 10.1039/c7an01655g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heat-induced conformational transitions are frequently used to probe the free energy landscapes of proteins. However, the extraction of information from thermal denaturation profiles pertaining to non-native protein conformations remains challenging due to their transient nature and significant conformational heterogeneity. Previously we developed a temperature-controlled electrospray ionization (ESI) source that allowed unfolding and association of biopolymers to be monitored by mass spectrometry (MS) in real time as a function of temperature. The scope of this technique is now extended to systems that undergo multi-step denaturation upon heat stress, as well as relatively small-scale conformational changes that are precursors to protein aggregation. The behavior of two therapeutic proteins (human antithrombin and an IgG1 monoclonal antibody) under heat-stress conditions is monitored in real time, providing evidence that relatively small-scale conformational changes in each system lead to protein oligomerization, followed by aggregation. Temperature-controlled ESI MS is particularly useful for the studies of heat-stressed multi-domain proteins such as IgG, where it allows distinct transitions to be observed. The ability of native temperature-controlled ESI MS to monitor both the conformational changes and oligomerization/degradation with high selectivity complements the classic calorimetric methods, lending itself as a powerful experimental tool for the thermostability studies of protein therapeutics.
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Affiliation(s)
- Guanbo Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, and School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, Jiangsu, China.
| | - Pavel V Bondarenko
- Attribute Sciences, Process Development, Amgen, Inc., Thousand Oaks, CA, USA
| | - Igor A Kaltashov
- Department of Chemistry, University of Massachusetts-Amherst, Amherst, MA, USA
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238
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Rani A, Venkatesu P. Changing relations between proteins and osmolytes: a choice of nature. Phys Chem Chem Phys 2018; 20:20315-20333. [DOI: 10.1039/c8cp02949k] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The stabilization and destabilization of the protein in the presence of any additive is mainly attributed to its preferential exclusion from protein surface and its preferential binding to the protein surface, respectively.
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Affiliation(s)
- Anjeeta Rani
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
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239
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Sharma A, Kumar V, Chatrath A, Dev A, Prasad R, Sharma AK, Tomar S, Kumar P. In vitro metal catalyzed oxidative stress in DAH7PS: Methionine modification leads to structure destabilization and induce amorphous aggregation. Int J Biol Macromol 2018; 106:1089-1106. [DOI: 10.1016/j.ijbiomac.2017.08.105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/14/2017] [Accepted: 08/17/2017] [Indexed: 11/28/2022]
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240
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Agarkhed M, O’Dell C, Hsieh MC, Zhang J, Goldstein J, Srivastava A. Effect of Surfactants on Mechanical, Thermal, and Photostability of a Monoclonal Antibody. AAPS PharmSciTech 2018; 19:79-92. [PMID: 28770529 DOI: 10.1208/s12249-017-0845-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/07/2017] [Indexed: 11/30/2022] Open
Abstract
The purpose of this work was to evaluate the effect of commonly used surfactants (at 0.01% w/v concentration) on mechanical, thermal, and photostability of a monoclonal antibody (MAb1) of IgG1 sub-class and to evaluate the minimum concentration of surfactant (Polysorbate 80) required in protecting MAb1 from mechanical stress. Surfactants evaluated were non-ionic surfactants, Polysorbate 80, Polysorbate 20, Pluronic F-68 (polyoxyethylene-polyoxypropylene block polymer), Brij 35 (polyoxyethylene lauryl ether), Triton X-100, and an anionic surfactant, Caprylic acid (1-Heptanecarboxylic acid). After evaluating effect of surfactants and determining stabilizing effect of Polysorbate 80 against mechanical stress without compromising thermal and photostability of MAb1, the minimum concentration of Polysorbate 80 required for mechanical stability was further examined. Polysorbate 80 concentration was varied from 0 to 0.02%. Mechanical stability was evaluated by agitation of MAb1 at 300 rotations per minute at room temperature for 72 h. Samples were analyzed for purity by SEC-HPLC, turbidity by absorbance at 350 nm, visible particles by visual inspection, and sub-visible particles by light obscuration technique on a particle analyzer. All non-ionic surfactants tested showed a similar effect in protecting against mechanical stress and did not exhibit any significant negative effect on thermal and photostability. However, Caprylic acid had a slightly negative effect on mechanical and photostability when compared to the non-ionic surfactants or sample without surfactant. This work demonstrated that polysorbate 80 is better than other surfactants tested and that a concentration of at least 0.005% (w/v) Polysorbate 80 is needed to protect MAb1 against mechanical stress.
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241
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Madeira do O J, Mastrotto F, Francini N, Allen S, van der Walle CF, Stolnik S, Mantovani G. Synthetic glycopolymers as modulators of protein aggregation: influences of chemical composition, topology and concentration. J Mater Chem B 2018; 6:1044-1054. [DOI: 10.1039/c7tb02720f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Synthetic glycopolymers with a variable macromolecular architecture and carbohydrate moieties are utilised to modulate stress-induced aggregation of monoclonal antibodies.
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Affiliation(s)
- J. Madeira do O
- Molecular Therapeutics and Formulation Division
- School of Pharmacy
- University of Nottingham
- Nottingham
- UK
| | - F. Mastrotto
- Department of Pharmaceutical and Pharmacological Sciences
- University of Padova
- 35131 Padova
- Italy
| | - N. Francini
- Molecular Therapeutics and Formulation Division
- School of Pharmacy
- University of Nottingham
- Nottingham
- UK
| | - S. Allen
- Molecular Therapeutics and Formulation Division
- School of Pharmacy
- University of Nottingham
- Nottingham
- UK
| | | | - S. Stolnik
- Molecular Therapeutics and Formulation Division
- School of Pharmacy
- University of Nottingham
- Nottingham
- UK
| | - G. Mantovani
- Molecular Therapeutics and Formulation Division
- School of Pharmacy
- University of Nottingham
- Nottingham
- UK
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242
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Moenes EM, Al-Ghobashy MA, Mohamed AA, Salem MY. Comparative Assessment of the Effect of Hyper-glycosylation on the Pattern and Kinetics of Degradation of Darbepoetin Alfa using a Stability-Indicating Orthogonal Testing Protocol. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1072:405-414. [DOI: 10.1016/j.jchromb.2017.10.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/21/2017] [Accepted: 10/29/2017] [Indexed: 10/18/2022]
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243
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244
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Zaman M, Zakariya SM, Nusrat S, Chandel TI, Meeran SM, Ajmal MR, Alam P, Wahiduzzaman, Khan RH. Cysteine as a potential anti-amyloidogenic agent with protective ability against amyloid induced cytotoxicity. Int J Biol Macromol 2017; 105:556-565. [DOI: 10.1016/j.ijbiomac.2017.07.083] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/12/2017] [Accepted: 07/12/2017] [Indexed: 12/27/2022]
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245
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Increase of bubble size playing a critical role in foam-induced protein aggregation: Aggregation of BSA in foam fractionation. Chem Eng Sci 2017. [DOI: 10.1016/j.ces.2017.09.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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246
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Latshaw DC, Randolph TW, Hall CK. Aggregation of amphipathic peptides at an aqueous–organic interface using coarse-grained simulations. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1319058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- David C. Latshaw
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Theodore W. Randolph
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Carol K. Hall
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
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247
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Hengsawas Surasarang S, Florova G, Komissarov AA, Shetty S, Idell S, Williams RO. Formulation for a novel inhaled peptide therapeutic for idiopathic pulmonary fibrosis. Drug Dev Ind Pharm 2017; 44:184-198. [PMID: 28835128 DOI: 10.1080/03639045.2017.1371736] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
A caveolin-1 scaffolding domain, CSP7, is a newly developed peptide for the treatment of idiopathic pulmonary fibrosis. To develop a CSP7 formulation for further use we have obtained, characterized and compared a number of lyophilized formulations of CSP7 trifluoroacetate with DPBS and in combination with excipients (mannitol and lactose at molar ratios 1:5, 70 and 140). CSP7 trifluoroacetate was stable (>95%) in solution at 5 and 25 °C for up to 48 h and tolerated at least 5 freeze/thaw cycles. Lyophilized cakes of CSP7 trifluoroacetate with excipients were stable (>96%) for up to 4 weeks at room temperature (RT), and retained more than 98% of the CSP7 trifluoroacetate in the solution at 8 h after reconstitution at RT. The lyophilized CSP7 formulations were stable for up to 10 months at 5 °C protected from moisture. Exposure of the lyophilized cakes of CSP7 to 75% relative humidity (RH) resulted in an increase in the absorbed moisture, promoted crystallization of the excipients and induced reversible formation of CSP7 aggregates. Increased molar ratio of mannitol slightly affected formation of the aggregates. In contrast, lactose significantly decreased (up to 20 times) aggregate formation with apparent saturation at the molar ratio of 1:70. The possible mechanisms of stabilization of CSP7 trifluoroacetate in solid state by lactose include physical state of the bulking agent and the interactions between lactose and CSP7 trifluoroacetate (e.g. formation of a Schiff base with the N-terminal amino group of CSP7). Finally, CSP7 trifluoroacetate exhibited excellent stability during nebulization of formulations containing mannitol or lactose.
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Affiliation(s)
| | - Galina Florova
- b School of Medical Biological Sciences , The University of Texas Health Science Center at Tyler , Tyler , TX , USA
| | - Andrey A Komissarov
- b School of Medical Biological Sciences , The University of Texas Health Science Center at Tyler , Tyler , TX , USA
| | - Sreerama Shetty
- b School of Medical Biological Sciences , The University of Texas Health Science Center at Tyler , Tyler , TX , USA
| | - Steven Idell
- b School of Medical Biological Sciences , The University of Texas Health Science Center at Tyler , Tyler , TX , USA
| | - Robert O Williams
- a Division of Pharmaceutics , College of Pharmacy, The University of Texas at Austin , Austin , TX , USA
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248
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Abstract
This review is focused on the use of membranes for the specific application of bone regeneration. The first section focuses on the relevance of membranes in this context and what are the specifications that they should possess to improve the regeneration of bone. Afterward, several techniques to engineer bone membranes by using "bulk"-like methods are discussed, where different parameters to induce bone formation are disclosed in a way to have desirable structural and functional properties. Subsequently, the production of nanostructured membranes using a bottom-up approach is discussed by highlighting the main advances in the field of bone regeneration. Primordial importance is given to the promotion of osteoconductive and osteoinductive capability during the membrane design. Whenever possible, the films prepared using different techniques are compared in terms of handability, bone guiding ability, osteoinductivity, adequate mechanical properties, or biodegradability. A last chapter contemplates membranes only composed by cells, disclosing their potential to regenerate bone.
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Affiliation(s)
- Sofia G Caridade
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
| | - João F Mano
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
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249
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Vasilescu A, Boulahneche S, Chekin F, Gáspár S, Medjram MS, Diagne AA, Singh SK, Kurungot S, Boukherroub R, Szunerits S. Porous reduced graphene oxide modified electrodes for the analysis of protein aggregation. Part 1: Lysozyme aggregation at pH 2 and 7.4. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.083] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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250
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How SC, Hsu WT, Tseng CP, Lo CH, Chou WL, Wang SSS. Brilliant blue R dye is capable of suppressing amyloid fibril formation of lysozyme. J Biomol Struct Dyn 2017; 36:3420-3433. [DOI: 10.1080/07391102.2017.1388848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Su-Chun How
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan
| | - Wei-Tse Hsu
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan
| | - Chia-Ping Tseng
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan
| | - Chun-Hsien Lo
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan
| | - Wei-Lung Chou
- Department of Safety, Health and Environmental Engineering, Hungkuang University, Sha Lu, Taichung City 433, Taiwan
| | - Steven S.-S. Wang
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan
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