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Zhang C, Steen Jørgensen F, van de Weert M, Bjerregaard S, Rantanen J, Yang M. Amino acids as stabilizers for lysozyme during the spray-drying process and storage. Int J Pharm 2024:124217. [PMID: 38734275 DOI: 10.1016/j.ijpharm.2024.124217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/13/2024]
Abstract
Amino acids (AAs) have been used as excipients in protein formulations both in solid and liquid state products due to their stabilizing effect. However, the mechanisms by which they can stabilize a protein have not been fully elucidated yet. The purpose of this study was to investigate the effect of AAs with distinct physicochemical properties on the stability of a model protein (lysozyme, LZM) during the spray-drying and subsequent storage. Molecular descriptor based multivariate data analysis was used to select distinct AAs from the group of 20 natural AAs. Then, LZM and the five selected AAs (1:1 wt ratio) were spray-dried (SD). The solid form, residual moisture content (RMC), hygroscopicity, morphology, secondary/tertiary structure and enzymatic activity of LZM were evaluated before and after storage under 40 °C/75 % RH for 30 days. Arginine (Arg), leucine (Leu), glycine (Gly), tryptophan (Trp), aspartic acid (Asp) were selected because of their distinct properties by using principal component analysis (PCA). The SD LZM powders containing Arg, Trp, or Asp were amorphous, while SD LZM powders containing Leu or Gly were crystalline. Recrystallization of Arg, Trp, Asp and polymorph transition of Gly were observed after the storage under accelerated conditions. The morphologies of the SD particles vary upon the different AAs formulated with LZM, implying different drying kinetics of the five model systems. A tertiary structural change of LZM was observed in the SD powders containing Arg, while a decrease in the enzymatic activity of LZM was observed in the powders containing Arg or Asp after the storage. This can be attributed to the extremely basic and acidic conditions that Arg and Asp can create, respectively. This study suggests that when AAs are used as stabilizers instead of traditional disaccharides, in addition to the classic vitrification theory and water replacement theory, the microenvironmental pH condition that the basic or acidic AAs may create in the starting solution or during the storage of solid matter is crucial for the stability of SD protein products.
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Affiliation(s)
- Chengqian Zhang
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | | | | | | | - Jukka Rantanen
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Mingshi Yang
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark; Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, China.
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2
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Zhou X, Galparsoro DF, Madsen AØ, Vetri V, van de Weert M, Nielsen HM, Foderà V. Corrigendum to "Polysorbate 80 controls Morphology, structure and stability of human insulin Amyloid-Like spherulites" [J. Colloid Interface Sci. 606(Part 2) (2022) 1928-1939]. J Colloid Interface Sci 2023; 640:917. [PMID: 36907151 DOI: 10.1016/j.jcis.2023.02.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- Xin Zhou
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Dirk Fennema Galparsoro
- Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, Ed. 18, Palermo 90128, Italy
| | - Anders Østergaard Madsen
- Manufacturing and Materials, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Valeria Vetri
- Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, Ed. 18, Palermo 90128, Italy.
| | - Marco van de Weert
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Hanne Mørck Nielsen
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Vito Foderà
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark.
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3
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Forsberg Chaaban H, Loschwitz J, de Weert MV, Strodel B, Stahlhul M, Foderà V. Biophysics of IL-22 receptor interaction with selected interleukins. Biophys J 2023; 122:457a. [PMID: 36784344 DOI: 10.1016/j.bpj.2022.11.2459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Affiliation(s)
- Hussein Forsberg Chaaban
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark; Leo Pharma A/S, Copenhagen, Denmark
| | - Jennifer Loschwitz
- Structural Biochemistry, Institute of Biological Information Processing, Forschungszentrum Jülich, Jülich, Germany
| | | | - Birgit Strodel
- Structural Biochemistry, Institute of Biological Information Processing, Forschungszentrum Jülich, Jülich, Germany
| | | | - Vito Foderà
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
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Zhou X, Sinkjær AW, Zhang M, Pinholt HD, Nielsen HM, Hatzakis NS, van de Weert M, Foderà V. Heterogeneous and Surface-Catalyzed Amyloid Aggregation Monitored by Spatially Resolved Fluorescence and Single Molecule Microscopy. J Phys Chem Lett 2023; 14:912-919. [PMID: 36669144 DOI: 10.1021/acs.jpclett.2c03400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Amyloid aggregation is associated with many diseases and may also occur in therapeutic protein formulations. Addition of co-solutes is a key strategy to modulate the stability of proteins in pharmaceutical formulations and select inhibitors for drug design in the context of diseases. However, the heterogeneous nature of this multicomponent system in terms of structures and mechanisms poses a number of challenges for the analysis of the chemical reaction. Using insulin as protein system and polysorbate 80 as co-solute, we combine a spatially resolved fluorescence approach with single molecule microscopy and machine learning methods to kinetically disentangle the different contributions from multiple species within a single aggregation experiment. We link the presence of interfaces to the degree of heterogeneity of the aggregation kinetics and retrieve the rate constants and underlying mechanisms for single aggregation events. Importantly, we report that the mechanism of inhibition of the self-assembly process depends on the details of the growth pathways of otherwise macroscopically identical species. This information can only be accessed by the analysis of single aggregate events, suggesting our method as a general tool for a comprehensive physicochemical characterization of self-assembly reactions.
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Affiliation(s)
- Xin Zhou
- Drug Delivery and Biophysics of Biopharmaceuticals and Center for Biopharmaceuticals and Biobarriers in Drug Delivery (BioDelivery), Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Anders Wilgaard Sinkjær
- Drug Delivery and Biophysics of Biopharmaceuticals and Center for Biopharmaceuticals and Biobarriers in Drug Delivery (BioDelivery), Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Min Zhang
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
- Nano-Science Center, University of Copenhagen Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Henrik Dahl Pinholt
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hanne Mørck Nielsen
- Drug Delivery and Biophysics of Biopharmaceuticals and Center for Biopharmaceuticals and Biobarriers in Drug Delivery (BioDelivery), Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Nano-Science Center, University of Copenhagen Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Nikos S Hatzakis
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
- Nano-Science Center, University of Copenhagen Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Marco van de Weert
- Drug Delivery and Biophysics of Biopharmaceuticals and Center for Biopharmaceuticals and Biobarriers in Drug Delivery (BioDelivery), Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Nano-Science Center, University of Copenhagen Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Vito Foderà
- Drug Delivery and Biophysics of Biopharmaceuticals and Center for Biopharmaceuticals and Biobarriers in Drug Delivery (BioDelivery), Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Nano-Science Center, University of Copenhagen Universitetsparken 5, 2100 Copenhagen, Denmark
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5
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Abstract
Salt ions are considered among the major determinants ruling protein folding, stability, and self-assembly in the context of amyloid-related diseases, protein drug development, and functional biomaterials. Here, we report that Hofmeister ions not only determine the rate constants of the aggregation reaction for human insulin and hen egg white lysozyme but also control the generation of a plethora of amyloid-like morphologies ranging from the nanoscale to the microscale. We anticipate that the latter is a result of a balance between colloidal and conformational stability combined with an ion-specific effect and highlight the importance of salt ions in controlling the biological functions of protein aggregates.
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Affiliation(s)
- Hussein Chaaban
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Jijo J Vallooran
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Marco van de Weert
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Vito Foderà
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
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Druedahl LC, Kälvemark Sporrong S, Minssen T, Hoogland H, De Bruin ML, van de Weert M, Almarsdóttir AB. Interchangeability of biosimilars: A study of expert views and visions regarding the science and substitution. PLoS One 2022; 17:e0262537. [PMID: 35015783 PMCID: PMC8751983 DOI: 10.1371/journal.pone.0262537] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 12/28/2021] [Indexed: 11/18/2022] Open
Abstract
Healthcare systems have reached a critical point regarding the question of whether biosimilar substitution should become common practice. To move the discussion forward, the study objective was to investigate the views of experts from medicines agencies and the pharmaceutical industry on the science underpinning interchangeability of biosimilars. We conducted an empirical qualitative study using semi-structured interviews informed by a cross-disciplinary approach encompassing regulatory science, law, and pharmaceutical policy. In total 25 individuals with experience within biologics participated during September 2018-August 2019. Eight participants were EU national medicines authority regulators, and 17 had pharmaceutical industry background: five from two originator-only companies, four from two companies with both biosimilar and originator products, and eight from seven biosimilar-only companies. Two analysts independently conducted inductive content analysis, resulting in data-driven themes capturing the meaning of the data. The participants reported that interchangeability was more than a scientific question of likeness between biosimilar and reference products: it also pertained to regulatory practices and trust. Participants were overall confident in the science behind exchanging biosimilar products for the reference products via switching, i.e., with physician involvement. However, their opinions differed regarding the scientific risk associated with biosimilar substitution, i.e., without physician involvement. Almost all participants saw no need for additional scientific data to support substitution. Moreover, the participants did not believe that switching studies, as required in the US, were appropriate for obtaining scientific certainty due to their small size. It is unclear why biosimilar switching is viewed as scientifically safer than substitution; therefore, we expect greater policy debate on biosimilar substitution in the near future. We urge European and UK policymakers and regulators to clarify their visions for biosimilar substitution; the positions of these two frontrunners are likely to influence other jurisdictions on the future of biosimilar use.
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Affiliation(s)
- Louise C. Druedahl
- Copenhagen Centre for Regulatory Science (CORS), Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Social and Clinical Pharmacy, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Centre for Advanced Studies in Biomedical Innovation Law (CeBIL), Faculty of Law, University of Copenhagen, Copenhagen, Denmark
- * E-mail:
| | - Sofia Kälvemark Sporrong
- Social and Clinical Pharmacy, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Social Pharmacy, Department of Pharmacy, Faculty of Pharmacy, Uppsala University, Uppsala, Sweden
| | - Timo Minssen
- Centre for Advanced Studies in Biomedical Innovation Law (CeBIL), Faculty of Law, University of Copenhagen, Copenhagen, Denmark
| | | | - Marie Louise De Bruin
- Copenhagen Centre for Regulatory Science (CORS), Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Marco van de Weert
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anna Birna Almarsdóttir
- Social and Clinical Pharmacy, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Zhou X, Fennema Galparsoro D, Østergaard Madsen A, Vetri V, van de Weert M, Mørck Nielsen H, Foderà V. Polysorbate 80 controls Morphology, structure and stability of human insulin Amyloid-Like spherulites. J Colloid Interface Sci 2022; 606:1928-1939. [PMID: 34695760 DOI: 10.1016/j.jcis.2021.09.132] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 09/09/2021] [Accepted: 09/21/2021] [Indexed: 01/09/2023]
Abstract
Amyloid protein aggregates are not only associated with neurodegenerative diseases and may also occur as unwanted by-products in protein-based therapeutics. Surfactants are often employed to stabilize protein formulations and reduce the risk of aggregation. However, surfactants alter protein-protein interactions and may thus modulate the physicochemical characteristics of any aggregates formed. Human insulin aggregation was induced at low pH in the presence of varying concentrations of the surfactant polysorbate 80. Various spectroscopic and imaging methods were used to study the aggregation kinetics, as well as structure and morphology of the formed aggregates. Molecular dynamics simulations were employed to investigate the initial interaction between the surfactant and insulin. Addition of polysorbate 80 slowed down, but did not prevent, aggregation of insulin. Amyloid spherulites formed under all conditions, with a higher content of intermolecular beta-sheets in the presence of the surfactant above its critical micelle concentration. In addition, a denser packing was observed, leading to a more stable aggregate. Molecular dynamics simulations suggested a tendency for insulin to form dimers in the presence of the surfactant, indicating a change in protein-protein interactions. It is thus shown that surfactants not only alter aggregation kinetics, but also affect physicochemical properties of any aggregates formed.
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Affiliation(s)
- Xin Zhou
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Dirk Fennema Galparsoro
- Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, Ed. 18, Palermo 90128, Italy
| | - Anders Østergaard Madsen
- Manufacturing and Materials, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Valeria Vetri
- Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, Ed. 18, Palermo 90128, Italy.
| | - Marco van de Weert
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Hanne Mørck Nielsen
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Vito Foderà
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark.
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Druedahl LC, Kälvemark Sporrong S, van de Weert M, De Bruin ML, Hoogland H, Minssen T, Almarsdóttir AB. Evolving Biosimilar Clinical Requirements: A Qualitative Interview Study with Industry Experts and European National Medicines Agency Regulators. BioDrugs 2021; 35:351-361. [PMID: 33830478 DOI: 10.1007/s40259-021-00478-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND A biosimilar is a biological medicine highly similar to another already approved biological medicine (reference product). The availability of biosimilars promotes competition and subsequently lower prices. Changing the current biosimilar clinical comparability trial requirements may lead to lower biosimilar development costs that potentially could increase patients' access to biologics. OBJECTIVE The aim was to determine the perceptions of industry and medicines agency regulators regarding the value, necessity, and future developments of the European biosimilar clinical comparability trial requirements for establishing biosimilarity. METHODS Semi-structured interviews were conducted with eight European national medicines agency regulators and 17 pharmaceutical company employees or consultants with experience in biologics between September 2018 and August 2019. Data were subjected to content analysis. RESULTS In general, the participants expected that clinical comparability trial requirements will continue to be reduced, in particular based on advancements in analytical testing and knowledge generated from prior biosimilar approvals. However, there are also competing issues at play, such as competition, physician's trust, and ethical considerations. Participants also reported that any new initiative to reduce or waive biosimilar clinical requirements needs to be scientifically sound and could potentially lower biosimilar development costs. CONCLUSION The main findings are that biosimilar clinical comparability trial requirements are likely to change in the near future. Clarity is needed on how to ensure adequate correlation between physicochemical data, pharmacokinetic/pharmacodynamic studies, and the drugs' performance in the clinic, as well as how to continue sufficient immunogenicity assessment. Obtaining this clarity can facilitate regulatory assessment of the next biosimilars.
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Affiliation(s)
- Louise C Druedahl
- Copenhagen Centre for Regulatory Science (CORS), Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen, 2100, Denmark. .,Social and Clinical Pharmacy, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. .,Centre for Advanced Studies in Biomedical Innovation Law (CeBIL), Faculty of Law, University of Copenhagen, Copenhagen, Denmark.
| | - Sofia Kälvemark Sporrong
- Social and Clinical Pharmacy, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Social Pharmacy, Department of Pharmacy, Faculty of Pharmacy, Uppsala University, Uppsala, Sweden
| | - Marco van de Weert
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marie Louise De Bruin
- Copenhagen Centre for Regulatory Science (CORS), Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen, 2100, Denmark.,Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | | | - Timo Minssen
- Centre for Advanced Studies in Biomedical Innovation Law (CeBIL), Faculty of Law, University of Copenhagen, Copenhagen, Denmark
| | - Anna Birna Almarsdóttir
- Social and Clinical Pharmacy, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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10
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Høgstedt UB, Østergaard J, Weiss T, Sjögren H, van de Weert M. Manipulating Aggregation Behavior of the Uncharged Peptide Carbetocin. J Pharm Sci 2018; 107:838-847. [DOI: 10.1016/j.xphs.2017.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 10/12/2017] [Accepted: 11/09/2017] [Indexed: 10/18/2022]
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Ji S, Thulstrup PW, Mu H, Hansen SH, van de Weert M, Rantanen J, Yang M. Investigation of factors affecting the stability of lysozyme spray dried from ethanol-water solutions. Int J Pharm 2017; 534:263-271. [DOI: 10.1016/j.ijpharm.2017.10.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 10/07/2017] [Accepted: 10/10/2017] [Indexed: 12/24/2022]
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Lobbens ESB, Vissing KJ, Jorgensen L, van de Weert M, Jäger AK. Screening of plants used in the European traditional medicine to treat memory disorders for acetylcholinesterase inhibitory activity and anti amyloidogenic activity. J Ethnopharmacol 2017; 200:66-73. [PMID: 28213109 DOI: 10.1016/j.jep.2017.02.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 01/20/2017] [Accepted: 02/13/2017] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Plants used in the traditional medicine of Europe to treat memory dysfunction and/or to enhance memory were investigated for activity against the underlying mechanisms of Alzheimer's disease. AIM OF THE STUDY To investigate 35 ethanolic extracts of plants, selected using an ethnopharmacological approach, for anti-amyloidogenic activity as well as an ability to inhibit the enzymatic activity of acetylcholinesterase. MATERIALS AND METHODS The anti-amyloidogenic activity of the extracts against amyloid beta was investigated by Thioflavin T fibrillation assays and the ability to inhibit the enzymatic activity of acetylcholinesterase was evaluated monitoring the hydrolysis of acetylthiocholine RESULTS: Under the experimental conditions investigated, extracts of two plants, Carum carvi and Olea sylvestris, inhibited amyloid beta fibrillation considerably, eight plant extracts inhibited amyloid beta fibrillation to some extent, 16 plant extracts had no effect on amyloid beta fibrillation and nine extracts accelerated fibrillation of amyloid beta. Furthermore, five plant extracts from Corydalis species inhibited the enzymatic activity of acetylcholinesterase considerably, one plant extract inhibited the enzymatic activity of acetylcholinesterase to some extent and 29 plant extract had no effect on the enzymatic activity of acetylcholinesterase. CONCLUSIONS An optimal extract in this study would possess acetylcholinesterase inhibitory activity as well as anti-amyloidogenic activity in order to address multiple facets of Alzheimer's disease, until the molecular origin of the disease is unraveled. Unfortunately no such extract was found.
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Affiliation(s)
- Eva S B Lobbens
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
| | - Karina J Vissing
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
| | - Lene Jorgensen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
| | - Marco van de Weert
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
| | - Anna K Jäger
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
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Svagan AJ, Kusic A, De Gobba C, Larsen FH, Sassene P, Zhou Q, van de Weert M, Mullertz A, Jørgensen B, Ulvskov P. Rhamnogalacturonan-I Based Microcapsules for Targeted Drug Release. PLoS One 2016; 11:e0168050. [PMID: 27992455 PMCID: PMC5167381 DOI: 10.1371/journal.pone.0168050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 11/23/2016] [Indexed: 01/15/2023] Open
Abstract
Drug targeting to the colon via the oral administration route for local treatment of e.g. inflammatory bowel disease and colonic cancer has several advantages such as needle-free administration and low infection risk. A new source for delivery is plant-polysaccharide based delivery platforms such as Rhamnogalacturonan-I (RG-I). In the gastro-intestinal tract the RG-I is only degraded by the action of the colonic microflora. For assessment of potential drug delivery properties, RG-I based microcapsules (~1 μm in diameter) were prepared by an interfacial poly-addition reaction. The cross-linked capsules were loaded with a fluorescent dye (model drug). The capsules showed negligible and very little in vitro release when subjected to media simulating gastric and intestinal fluids, respectively. However, upon exposure to a cocktail of commercial RG-I cleaving enzymes, ~ 9 times higher release was observed, demonstrating that the capsules can be opened by enzymatic degradation. The combined results suggest a potential platform for targeted drug delivery in the terminal gastro-intestinal tract.
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Affiliation(s)
- Anna J. Svagan
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
- * E-mail:
| | - Anja Kusic
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Cristian De Gobba
- Department of Food Science, University of Copenhagen, Copenhagen, Denmark
| | - Flemming H. Larsen
- Department of Food Science, University of Copenhagen, Copenhagen, Denmark
| | - Philip Sassene
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Qi Zhou
- School of Biotechnology, Royal Institute of Technology (KTH), Stockholm, Sweden
| | | | - Anette Mullertz
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Bodil Jørgensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Peter Ulvskov
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
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E. Nazari Z, van de Weert M, Bou-Assaf G, Houde D, Weiskopf A, D. Rand K. Rapid Conformational Analysis of Protein Drugs in Formulation by Hydrogen/Deuterium Exchange Mass Spectrometry. J Pharm Sci 2016; 105:3269-3277. [DOI: 10.1016/j.xphs.2016.07.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 06/29/2016] [Accepted: 07/12/2016] [Indexed: 01/21/2023]
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Høgstedt UB, Schwach G, van de Weert M, Østergaard J. Taylor Dispersion Analysis as a promising tool for assessment of peptide-peptide interactions. Eur J Pharm Sci 2016; 93:21-8. [DOI: 10.1016/j.ejps.2016.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 06/02/2016] [Accepted: 07/22/2016] [Indexed: 12/31/2022]
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16
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Hedegaard SF, Cárdenas M, Barker R, Jorgensen L, van de Weert M. Lipidation Effect on Surface Adsorption and Associated Fibrillation of the Model Protein Insulin. Langmuir 2016; 32:7241-7249. [PMID: 27348237 DOI: 10.1021/acs.langmuir.6b00522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Lipidation of proteins is used in the pharmaceutical field to increase the therapeutic efficacy of proteins. In this study, we investigate the effect of a 14-carbon fatty acid modification on the adsorption behavior of human insulin to a hydrophobic solid surface and the subsequent fibrillation development under highly acidic conditions and elevated temperature by comparing to the fibrillation of human insulin. At these stressed conditions, the lipid modification accelerates the rate of fibrillation in bulk solution. With the use of several complementary surface-sensitive techniques, including quartz crystal microbalance with dissipation monitoring (QCM-D), atomic force microscopy (AFM), and neutron reflectivity (NR), we show that there are two levels of structurally different protein organization at a hydrophobic surface for both human insulin and the lipidated analogue: a dense protein layer formed within minutes on the surface and a diffuse outer layer of fibrillar structures which took hours to form. The two layers may only be weakly connected, and proteins from both layers are able to desorb from the surface. The lipid modification increases the protein surface coverage and the thickness of both layer organizations. Upon lipidation not only the fibrillation extent but also the morphology of the fibrillar structures changes from fibril clusters on the surface to a more homogeneous network of fibrils covering the entire hydrophobic surface.
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Affiliation(s)
- Sofie Fogh Hedegaard
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen , Universitetsparken 2, 2100 Copenhagen O, Denmark
| | - Marité Cárdenas
- Department of Biomedical Science and Biofilms Research Center for Biointerfaces, Faculty of Health and Society, Malmo University , Per Albin Hanssons väg 35, 214 32 Malmö, Sweden
- Department of Chemistry, Faculty of Science, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen O, Denmark
| | - Robert Barker
- Institut Laue-Langevin, 71 avenue des Martyrs, 38042 Grenoble, Cedex 9, France
| | - Lene Jorgensen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen , Universitetsparken 2, 2100 Copenhagen O, Denmark
| | - Marco van de Weert
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen , Universitetsparken 2, 2100 Copenhagen O, Denmark
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17
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Vernet E, Popa G, Pozdnyakova I, Rasmussen JE, Grohganz H, Giehm L, Jensen MH, Wang H, Plesner B, Nielsen HM, Jensen KJ, Berthelsen J, Sundström M, van de Weert M. Large-Scale Biophysical Evaluation of Protein PEGylation Effects: In Vitro Properties of 61 Protein Entities. Mol Pharm 2016; 13:1587-98. [DOI: 10.1021/acs.molpharmaceut.6b00049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Erik Vernet
- Novo Nordisk A/S, 2880 Bagsværd, Denmark
- The
Novo Nordisk Foundation Center for Protein Research (NNF CPR), Faculty
of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Gina Popa
- The
Novo Nordisk Foundation Center for Protein Research (NNF CPR), Faculty
of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Irina Pozdnyakova
- The
Novo Nordisk Foundation Center for Protein Research (NNF CPR), Faculty
of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jakob E. Rasmussen
- Department
of Chemistry, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Holger Grohganz
- Department
of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lise Giehm
- Department
of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Malene H. Jensen
- Department
of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Huabing Wang
- Department
of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bitten Plesner
- Department
of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Hanne M. Nielsen
- Department
of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Knud J. Jensen
- Department
of Chemistry, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Jens Berthelsen
- Costerton
Biofilm center, Department for Immunology and Microbiology, Faculty
of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Michael Sundström
- The
Novo Nordisk Foundation Center for Protein Research (NNF CPR), Faculty
of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marco van de Weert
- Department
of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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18
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Lobbens ES, Foderà V, Nyberg NT, Andersen K, Jäger AK, Jorgensen L, van de Weert M. The Inhibitory Effect of Natural Products on Protein Fibrillation May Be Caused by Degradation Products--A Study Using Aloin and Insulin. PLoS One 2016; 11:e0149148. [PMID: 26882071 PMCID: PMC4755604 DOI: 10.1371/journal.pone.0149148] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 01/27/2016] [Indexed: 11/19/2022] Open
Abstract
Protein fibrillation is the pathological hallmark of several neurodegenerative diseases and also complicates the manufacturing and use of protein drugs. As a case study, the inhibitory activity of the natural compound aloin against insulin fibrillation was investigated. Based on Thioflavin T assays, high-performance liquid chromatography and transmission electron microscopy it was found that a degradation product of aloin, formed over weeks of storage, was able to significantly inhibit insulin fibrillation. The activity of the stored aloin was significantly reduced in the presence of small amounts of sodium azide or ascorbic acid, suggesting the active compound to be an oxidation product. A high-performance liquid chromatography method and a liquid chromatography-mass spectrometry method were developed to investigate the degradation products in the aged aloin solution. We found that the major compounds in the solution were aloin A and aloin B. In addition, 10-hydroxy aloin and elgonica dimers were detected in smaller amounts. The identified compounds were isolated and tested for activity by means of Thioflavin T assays, but no activity was observed. Thus, the actual fibrillation inhibitor is an as yet unidentified and potentially metastable degradation product of aloin. These results suggest that degradation products, and in particular oxidation products, are to be considered thoroughly when natural products are investigated for activity against protein fibrillation.
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Affiliation(s)
- Eva S. Lobbens
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vito Foderà
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Nils T. Nyberg
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kirsten Andersen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anna K. Jäger
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lene Jorgensen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marco van de Weert
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- * E-mail:
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19
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Bortolotti A, Wong YH, Korsholm SS, Bahring NHB, Bobone S, Tayyab S, van de Weert M, Stella L. On the purported “backbone fluorescence” in protein three-dimensional fluorescence spectra. RSC Adv 2016. [DOI: 10.1039/c6ra23426g] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A peak in 3D-fluorescence spectra of proteins, often assigned to backbone emission, is shown to be due to aromatic residues.
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Affiliation(s)
- Annalisa Bortolotti
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- 00133 Rome
- Italy
| | - Yin How Wong
- Biomolecular Research Group
- Biochemistry Program
- Institute of Biological Sciences
- Faculty of Science
- University of Malaya
| | - Stine S. Korsholm
- Department of Pharmacy
- Faculty of Health and Medical Sciences
- University of Copenhagen
- 2100 Copenhagen
- Denmark
| | - Noor Hafizan B. Bahring
- Biomolecular Research Group
- Biochemistry Program
- Institute of Biological Sciences
- Faculty of Science
- University of Malaya
| | - Sara Bobone
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- 00133 Rome
- Italy
| | - Saad Tayyab
- Biomolecular Research Group
- Biochemistry Program
- Institute of Biological Sciences
- Faculty of Science
- University of Malaya
| | - Marco van de Weert
- Department of Pharmacy
- Faculty of Health and Medical Sciences
- University of Copenhagen
- 2100 Copenhagen
- Denmark
| | - Lorenzo Stella
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- 00133 Rome
- Italy
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20
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Fonte P, Araújo F, Seabra V, Reis S, van de Weert M, Sarmento B. Co-encapsulation of lyoprotectants improves the stability of protein-loaded PLGA nanoparticles upon lyophilization. Int J Pharm 2015; 496:850-62. [DOI: 10.1016/j.ijpharm.2015.10.032] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 10/07/2015] [Accepted: 10/09/2015] [Indexed: 10/22/2022]
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21
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Klukkert M, van de Weert M, Fanø M, Rades T, Leopold CS. Influence of Tableting on the Conformation and Thermal Stability of Trypsin as a Model Protein. J Pharm Sci 2015; 104:4314-4321. [DOI: 10.1002/jps.24672] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/13/2015] [Accepted: 09/09/2015] [Indexed: 11/05/2022]
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22
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Abstract
Background PEGylation is a strategy used by the pharmaceutical industry to prolong systemic circulation of protein drugs, whereas formulation excipients are used for stabilization of proteins during storage. Here we investigate the role of PEGylation in protein stabilization by formulation excipients that preferentially interact with the protein. Methodology/Principal Findings The model protein hen egg white lysozyme was doubly PEGylated on two lysines with 5 kDa linear PEGs (mPEG-succinimidyl valerate, MW 5000) and studied in the absence and presence of preferentially excluded sucrose and preferentially bound guanine hydrochloride. Structural characterization by far- and near-UV circular dichroism spectroscopy was supplemented by investigation of protein thermal stability with the use of differential scanning calorimetry, far and near-UV circular dichroism and fluorescence spectroscopy. It was found that PEGylated lysozyme was stabilized by the preferentially excluded excipient and destabilized by the preferentially bound excipient in a similar manner as lysozyme. However, compared to lysozyme in all cases the melting transition was lower by up to a few degrees and the calorimetric melting enthalpy was decreased to half the value for PEGylated lysozyme. The ratio between calorimetric and van’t Hoff enthalpy suggests that our PEGylated lysozyme is a dimer. Conclusion/Significance The PEGylated model protein displayed similar stability responses to the addition of preferentially active excipients. This suggests that formulation principles using preferentially interacting excipients are similar for PEGylated and non-PEGylated proteins.
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Affiliation(s)
- Louise Stenstrup Holm
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- * E-mail:
| | - Peter W. Thulstrup
- Department of Chemistry, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Marina R. Kasimova
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marco van de Weert
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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23
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Rose F, Wern JE, Ingvarsson PT, van de Weert M, Andersen P, Follmann F, Foged C. Engineering of a novel adjuvant based on lipid-polymer hybrid nanoparticles: A quality-by-design approach. J Control Release 2015; 210:48-57. [PMID: 25957906 DOI: 10.1016/j.jconrel.2015.05.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 11/15/2022]
Abstract
The purpose of this study was to design a novel and versatile adjuvant intended for mucosal vaccination based on biodegradable poly(DL-lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) modified with the cationic surfactant dimethyldioctadecylammonium (DDA) bromide and the immunopotentiator trehalose-6,6'-dibehenate (TDB) (CAF01) to tailor humoral and cellular immunity characterized by antibodies and Th1/Th17 responses. Such responses are important for the protection against diseases caused by intracellular bacteria such as Chlamydia trachomatis and Mycobacterium tuberculosis. The hybrid NPs were engineered using an oil-in-water single emulsion method and a quality-by-design approach was adopted to define the optimal operating space (OOS). Four critical process parameters (CPPs) were identified, including the acetone concentration in the water phase, the stabilizer [polyvinylalcohol (PVA)] concentration, the lipid-to-total solid ratio, and the total concentration. The CPPs were linked to critical quality attributes consisting of the particle size, polydispersity index (PDI), zeta-potential, thermotropic phase behavior, yield and stability. A central composite face-centered design was performed followed by multiple linear regression analysis. The size, PDI, enthalpy of the phase transition and yield were successfully modeled, whereas the models for the zeta-potential and the stability were poor. Cryo-transmission electron microscopy revealed that the main structural effect on the nanoparticle architecture is caused by the use of PVA, and two different morphologies were identified: i) A PLGA core coated with one or several concentric lipid bilayers, and ii) a PLGA nanoshell encapsulating lipid membrane structures. The optimal formulation, identified from the OOS, was evaluated in vivo. The hybrid NPs induced antibody and Th1/Th17 immune responses that were similar in quality and magnitude to the response induced by DDA/TDB liposomes, showing that the adjuvant properties of DDA/TDB are maintained in the PLGA hybrid matrix. This study demonstrates the complexity of formulation design for the engineering of a hybrid lipid-polymer nanoparticle adjuvant.
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Affiliation(s)
- Fabrice Rose
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Jeanette Erbo Wern
- Department of Infectious Disease Immunology, Chlamydia Vaccine Research, Statens Serum Institut, Artillerivej 5, DK-2300 Copenhagen S, Denmark
| | - Pall Thor Ingvarsson
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Marco van de Weert
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Peter Andersen
- Department of Infectious Disease Immunology, Chlamydia Vaccine Research, Statens Serum Institut, Artillerivej 5, DK-2300 Copenhagen S, Denmark
| | - Frank Follmann
- Department of Infectious Disease Immunology, Chlamydia Vaccine Research, Statens Serum Institut, Artillerivej 5, DK-2300 Copenhagen S, Denmark
| | - Camilla Foged
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
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24
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Bobone S, van de Weert M, Stella L. A reassessment of synchronous fluorescence in the separation of Trp and Tyr contributions in protein emission and in the determination of conformational changes. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.01.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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26
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Holm LS, Mcumber A, Rasmussen JE, Obiols‐Rabasa M, Thulstrup PW, Kasimova MR, Randolph TW, van de Weert M. The Effect of Protein PEGylation on Physical Stability in Liquid Formulation. J Pharm Sci 2014; 103:3043-54. [DOI: 10.1002/jps.24094] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 05/21/2014] [Accepted: 06/30/2014] [Indexed: 12/22/2022]
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27
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Water JJ, Schack MM, Velazquez-Campoy A, Maltesen MJ, van de Weert M, Jorgensen L. Complex coacervates of hyaluronic acid and lysozyme: Effect on protein structure and physical stability. Eur J Pharm Biopharm 2014; 88:325-31. [DOI: 10.1016/j.ejpb.2014.09.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 08/27/2014] [Accepted: 09/01/2014] [Indexed: 12/19/2022]
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28
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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] [What about the content of this article? (0)] [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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29
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Maltesen MJ, van de Weert M, Grohganz H. Erratum to: Design of Experiments-Based Monitoring of Critical Quality Attributes for the Spray-Drying Process of Insulin by NIR Spectroscopy. AAPS PharmSciTech 2013. [DOI: 10.1208/s12249-013-9938-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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30
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Jensen MH, Wahlund PO, Toft KN, Jacobsen JK, Steensgaard DB, van de Weert M, Havelund S, Vestergaard B. Small Angle X-ray Scattering-Based Elucidation of the Self-Association Mechanism of Human Insulin Analogue LysB29(Nεω-carboxyheptadecanoyl) des(B30). Biochemistry 2013; 52:282-94. [DOI: 10.1021/bi3008615] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Malene Hillerup Jensen
- Department of Drug Design and
Pharmacology, University of Copenhagen,
Copenhagen, Denmark
- Department
of Pharmacy, University of Copenhagen,
Copenhagen, Denmark
- Novo Nordisk A/S, Måløv, Denmark
| | | | - Katrine Nørgaard Toft
- Department of Drug Design and
Pharmacology, University of Copenhagen,
Copenhagen, Denmark
| | | | | | | | | | - Bente Vestergaard
- Department of Drug Design and
Pharmacology, University of Copenhagen,
Copenhagen, Denmark
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31
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Maltesen MJ, van de Weert M, Grohganz H. Design of experiments-based monitoring of critical quality attributes for the spray-drying process of insulin by NIR spectroscopy. AAPS PharmSciTech 2012; 13:747-55. [PMID: 22585372 PMCID: PMC3429688 DOI: 10.1208/s12249-012-9796-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Accepted: 04/20/2012] [Indexed: 11/30/2022] Open
Abstract
Moisture content and aerodynamic particle size are critical quality attributes for spray-dried protein formulations. In this study, spray-dried insulin powders intended for pulmonary delivery were produced applying design of experiments methodology. Near infrared spectroscopy (NIR) in combination with preprocessing and multivariate analysis in the form of partial least squares projections to latent structures (PLS) were used to correlate the spectral data with moisture content and aerodynamic particle size measured by a time of flight principle. PLS models predicting the moisture content were based on the chemical information of the water molecules in the NIR spectrum. Models yielded prediction errors (RMSEP) between 0.39% and 0.48% with thermal gravimetric analysis used as reference method. The PLS models predicting the aerodynamic particle size were based on baseline offset in the NIR spectra and yielded prediction errors between 0.27 and 0.48 μm. The morphology of the spray-dried particles had a significant impact on the predictive ability of the models. Good predictive models could be obtained for spherical particles with a calibration error (RMSECV) of 0.22 μm, whereas wrinkled particles resulted in much less robust models with a Q (2) of 0.69. Based on the results in this study, NIR is a suitable tool for process analysis of the spray-drying process and for control of moisture content and particle size, in particular for smooth and spherical particles.
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Affiliation(s)
- Morten Jonas Maltesen
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark.
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32
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Hartvig RA, van de Weert M, Ostergaard J, Jorgensen L, Jensen H. Formation of dielectric layers and charge regulation in protein adsorption at biomimetic interfaces. Langmuir 2012; 28:1804-1815. [PMID: 22185404 DOI: 10.1021/la204309a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Protein charge is an important parameter in the understanding of protein interactions and function. Proteins are subject to dynamic charge regulation, that is, the influence of the local environment (such as charged interfaces and biopolymers) on protein charge. Charge regulation is governed by differences in the dielectric and electrostatic environment between adsorbed protein and the free protein in bulk solution. In this work protein charge regulation is addressed experimentally by employing electrochemistry at interfaces between two immiscible electrolyte solutions (ITIES) as well as theoretically by developing a new protein adsorption model at ITIES. Electrochemistry at ITIES is shown to be particularly well suited to study protein charge regulation as the adsorbed protein experiences a different dielectric environment compared to the bulk phase and the external control of the water/oil potential difference allows systematic studies on how potential induced ion gradients affect protein charge. The theoretical model incorporates all the features of the experimental system and specifically takes into account protein charge regulation at ITIES as well as the impact of the formation of dielectric layers on the experimentally observed impedance. The model parameters include the protein charge-pH profile, bulk pH, and the overall potential difference. It is shown that the formation of a dielectric layer and the associated charge regulation are the main factors dictating the observed experimental behavior. Finally, the theoretical model is used to interpret literature results, and the consistency between the model and the relatively large data set suggests that the model may be used more generally for understanding and predicting protein adsorption.
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Affiliation(s)
- Rune A Hartvig
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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33
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Hawe A, Wiggenhorn M, van de Weert M, Garbe JHO, Mahler HC, Jiskoot W. Forced degradation of therapeutic proteins. J Pharm Sci 2011; 101:895-913. [PMID: 22083792 DOI: 10.1002/jps.22812] [Citation(s) in RCA: 178] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Revised: 10/17/2011] [Accepted: 10/18/2011] [Indexed: 01/16/2023]
Abstract
The scope of this paper is to review approaches used for forced degradation (synonym, stress testing) of therapeutic proteins. Forced degradation studies play a central role in the development of therapeutic proteins, for example, for candidate selection, molecule characterization, formulation development, assay development, and comparability studies. Typical stress methods are addressed within this review, such as exposure to elevated temperatures, freeze-thawing, mechanical stress, oxidation, light, as well as various materials and devices used in the clinics during final administration. Stability testing is briefly described as far as relevant to the discussion of forced degradation studies. Whereas stability-testing requirements are defined in regulatory guidelines, standard procedures for forced degradation of therapeutic proteins are largely unavailable, except for photostability. Possible selection criteria to identify appropriate stress conditions and recommendations for setting up forced degradation studies for the different phases of development of therapeutic proteins are presented.
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Affiliation(s)
- Andrea Hawe
- Division of Drug Delivery Technology, Leiden/Amsterdam Center for Drug Research, 2300 RA Leiden, The Netherlands
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34
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35
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Maltesen MJ, Bjerregaard S, Hovgaard L, Havelund S, van de Weert M, Grohganz H. Multivariate analysis of phenol in freeze-dried and spray-dried insulin formulations by NIR and FTIR. AAPS PharmSciTech 2011; 12:627-36. [PMID: 21560023 DOI: 10.1208/s12249-011-9618-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Accepted: 04/14/2011] [Indexed: 11/30/2022] Open
Abstract
Dehydration is a commonly used method to stabilise protein formulations. Upon dehydration, there is a significant risk the composition of the formulation will change especially if the protein formulation contains volatile compounds. Phenol is often used as excipient in insulin formulations, stabilising the insulin hexamer by changing the secondary structure. We have previously shown that it is possible to maintain this structural change after drying. The aim of this study was to evaluate the residual phenol content in spray-dried and freeze-dried insulin formulations by Fourier transform infrared (FTIR) spectroscopy and near infrared (NIR) spectroscopy using multivariate data analysis. A principal component analysis (PCA) and partial least squares (PLS) projections were used to analyse spectral data. After drying, there was a difference between the two drying methods in the phenol/insulin ratio and the water content of the dried samples. The spray-dried samples contained more water and less phenol compared with the freeze-dried samples. For the FTIR spectra, the best model used one PLS component to describe the phenol/insulin ratio in the powders, and was based on the second derivative pre-treated spectra in the 850-650 cm(-1) region. The best PLS model based on the NIR spectra utilised three PLS components to describe the phenol/insulin ratio and was based on the standard normal variate transformed spectra in the 6,200-5,800 cm(-1) region. The root mean square error of cross validation was 0.69% and 0.60% (w/w) for the models based on the FTIR and NIR spectra, respectively. In general, both methods were suitable for phenol quantification in dried phenol/insulin samples.
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36
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Rasmussen T, van de Weert M, Jiskoot W, Kasimova MR. Thermal and acid denaturation of bovine lens α-crystallin. Proteins 2011; 79:1747-58. [DOI: 10.1002/prot.22998] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 01/10/2011] [Accepted: 01/13/2011] [Indexed: 11/11/2022]
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Hartvig RA, van de Weert M, Østergaard J, Jorgensen L, Jensen H. Protein adsorption at charged surfaces: the role of electrostatic interactions and interfacial charge regulation. Langmuir 2011; 27:2634-43. [PMID: 21322572 DOI: 10.1021/la104720n] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The understanding of protein adsorption at charged surfaces is important for a wide range of scientific disciplines including surface engineering, separation sciences and pharmaceutical sciences. Compared to chemical entities having a permanent charge, the adsorption of small ampholytes and proteins is more complicated as the pH near a charged surface can be significantly different from the value in bulk solution. In this work, we have developed a phenomenological adsorption model which takes into account the combined role of interfacial ion distribution, interfacial charge regulation of amino acids in the proximity of the surface, electroneutrality, and mass balance. The model is straightforward to apply to a given set of experimental conditions as most model parameters are obtained from bulk properties and therefore easy to estimate or are directly measurable. The model provides a detailed understanding of the importance of surface charge on adsorption and in particular of how changes in surface charge, concentration, and surface area may affect adsorption behavior. The model is successfully used to explain the experimental adsorption behavior of the two model proteins lysozyme and α-lactalbumin. It is demonstrated that it is possible to predict the pH and surface charge dependent adsorption behavior from experimental or theoretical estimates of a preferred orientation of a protein at a solid charged interface.
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Affiliation(s)
- Rune A Hartvig
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen , Universitetsparken 2, DK-2100 Copenhagen, Denmark
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Fano M, van de Weert M, Moeller EH, Kruse NA, Frokjaer S. Ionic strength-dependent denaturation of Thermomyces lanuginosus lipase induced by SDS. Arch Biochem Biophys 2010; 506:92-8. [PMID: 21093408 DOI: 10.1016/j.abb.2010.11.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2010] [Revised: 11/09/2010] [Accepted: 11/11/2010] [Indexed: 11/29/2022]
Abstract
Triglyceride lipase from Thermomyces lanuginosus (TlL) has been reported to be resistant to denaturation by sodium dodecyl sulfate (SDS). We have found that at neutral pH, structural integrity is strongly dependent on ionic strength. In 10mM phosphate buffer and SDS, the lipase exhibits a far-UV CD spectrum similar to other proteins denatured in this surfactant while the near-UV CD spectrum shows a complete loss of tertiary structure, observations supported by steady state fluorescence spectroscopy. However, when increasing the ionic strength by the addition of NaCl, the lipase was rendered resistant towards SDS denaturation, as observed by all techniques employed. The effect of salt on the critical micelle concentration (CMC) of SDS was observed to correlate with the effect on the degree of SDS-induced denaturation. This finding is compatible with the notion that the concentration of SDS monomers is a crucial factor for SDS-lipase interactions. The presented results are important for the understanding and improvement of protein stability in surfactant systems.
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Affiliation(s)
- Mathias Fano
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Denmark.
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Hartvig RA, Méndez MA, Weert MVD, Jorgensen L, Østergaard J, Girault HH, Jensen H. Interfacial Complexes between a Protein and Lipophilic Ions at an Oil−Water Interface. Anal Chem 2010; 82:7699-705. [DOI: 10.1021/ac101528r] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rune A. Hartvig
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
| | - Manuel A. Méndez
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
| | - Marco van de Weert
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
| | - Lene Jorgensen
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
| | - Jesper Østergaard
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
| | - Hubert H. Girault
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
| | - Henrik Jensen
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
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Rasmussen T, Kasimova MR, Jiskoot W, van de Weert M. The Chaperone-like Protein α-Crystallin Dissociates Insulin Dimers and Hexamers. Biochemistry 2009; 48:9313-20. [DOI: 10.1021/bi900451j] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tue Rasmussen
- Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark
- Division of Drug Delivery Technology, Leiden/Amsterdam Center for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
| | - Marina R. Kasimova
- Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Wim Jiskoot
- Division of Drug Delivery Technology, Leiden/Amsterdam Center for Drug Research (LACDR), Leiden University, Leiden, The Netherlands
| | - Marco van de Weert
- Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark
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Jorgensen L, Martins S, van de Weert M. Analysis of Protein Physical Stability in Lipid Based Delivery Systems—The Challenges of Lipid Drug Delivery Systems. J Biomed Nanotechnol 2009; 5:401-8. [DOI: 10.1166/jbn.2009.1049] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Anderot M, Nilsson M, Végvári Á, Moeller EH, van de Weert M, Isaksson R. Determination of dissociation constants between polyelectrolytes and proteins by affinity capillary electrophoresis. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:892-6. [DOI: 10.1016/j.jchromb.2009.02.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 02/05/2009] [Accepted: 02/06/2009] [Indexed: 11/28/2022]
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Maltesen MJ, Bjerregaard S, Hovgaard L, Havelund S, van de Weert M. Quality by design – Spray drying of insulin intended for inhalation. Eur J Pharm Biopharm 2008; 70:828-38. [DOI: 10.1016/j.ejpb.2008.07.015] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2008] [Revised: 07/10/2008] [Accepted: 07/27/2008] [Indexed: 11/29/2022]
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Foderà V, Groenning M, Vetri V, Librizzi F, Spagnolo S, Cornett C, Olsen L, van de Weert M, Leone M. Thioflavin T Hydroxylation at Basic pH and Its Effect on Amyloid Fibril Detection. J Phys Chem B 2008; 112:15174-81. [DOI: 10.1021/jp805560c] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Vito Foderà
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
| | - Minna Groenning
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
| | - Valeria Vetri
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
| | - Fabio Librizzi
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
| | - Salvatore Spagnolo
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
| | - Claus Cornett
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
| | - Lars Olsen
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
| | - Marco van de Weert
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
| | - Maurizio Leone
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR - Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark, and Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
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Thomsen AE, Jensen H, Jorgensen L, van de Weert M, Østergaard J. Studies on human insulin adsorption kinetics at an organic–aqueous interface determined using a label-free electroanalytical approach. Colloids Surf B Biointerfaces 2008; 63:243-8. [DOI: 10.1016/j.colsurfb.2007.12.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 09/06/2007] [Accepted: 12/10/2007] [Indexed: 11/30/2022]
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Foderà V, Librizzi F, Groenning M, van de Weert M, Leone M. Secondary Nucleation and Accessible Surface in Insulin Amyloid Fibril Formation. J Phys Chem B 2008; 112:3853-8. [DOI: 10.1021/jp710131u] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vito Foderà
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR − Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, and Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Fabio Librizzi
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR − Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, and Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Minna Groenning
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR − Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, and Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Marco van de Weert
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR − Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, and Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Maurizio Leone
- Dipartimento di Scienze Fisiche e Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy, CNR − Istituto di Biofisica, U.O. Via U. La Malfa 153, 90146 Palermo, Italy, and Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
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van de Weert M, Horn Moeller E. Protein pharmaceuticals. Drug Discov Today Technol 2008; 5:e35-e36. [PMID: 24981088 DOI: 10.1016/j.ddtec.2009.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- Marco van de Weert
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Eva Horn Moeller
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark.
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Abstract
Removal of water is a common method to prolong the storage stability of protein formulations. Traditionally, freeze-drying has been the method of choice, but spray drying and supercritical drying have gained increased interest in the past decade. The proper choice of drying technology has a significant impact on the final pharmaceutical product and on the overall economy of the process.:
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Affiliation(s)
- Morten Jonas Maltesen
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Marco van de Weert
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark
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Groenning M, Norrman M, Flink JM, van de Weert M, Bukrinsky JT, Schluckebier G, Frokjaer S. Binding mode of Thioflavin T in insulin amyloid fibrils. J Struct Biol 2007; 159:483-97. [PMID: 17681791 DOI: 10.1016/j.jsb.2007.06.004] [Citation(s) in RCA: 170] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2007] [Revised: 06/01/2007] [Accepted: 06/05/2007] [Indexed: 11/30/2022]
Abstract
Amyloid fibrils share various common structural features and their presence can be detected by Thioflavin T (ThT). In this paper, the binding mode of ThT to insulin amyloid fibrils was examined. Scatchard analysis and isothermal titration calorimetry (ITC) showed at least two binding site populations. The binding site population with the strongest binding was responsible for the characteristic ThT fluorescence. This binding had a capacity of about 0.1 moles of ThT bound per mole of insulin in fibril form. The binding capacity was unaffected by pH, but the affinity was lowest at low pH. Notably, presence of a third binding process prior to the other processes was suggested by ITC. Binding of ThT resulted in only minor changes in the fibril structure according to the X-ray diffraction patterns, where a slightly more dominant equatorial reflection at 16A relative to the intersheet distance of 11A was observed. No change in the interstrand distance of 4.8A was observed. On the basis of our results, we propose that ThT binds in cavities running parallel to the fibril axis, e.g., between the protofilaments forming the fibrils. Such cavities have been proposed previously in insulin fibrils and several other amyloid fibril models.
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Affiliation(s)
- Minna Groenning
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
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Zijlstra GS, Rijkeboer M, Jan van Drooge D, Sutter M, Jiskoot W, van de Weert M, Hinrichs WLJ, Frijlink HW. Characterization of a cyclosporine solid dispersion for inhalation. AAPS J 2007; 9:E190-9. [PMID: 17614361 PMCID: PMC2751408 DOI: 10.1208/aapsj0902021] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
For lung transplant patients, a respirable, inulin-based solid dispersion containing cyclosporine A (CsA) has been developed. The solid dispersions were prepared by spray freeze-drying. The solid dispersion was characterized by water vapor uptake, specific surface area analysis, and particle size analysis. Furthermore, the mode of inclusion of CsA in the dispersion was investigated with Fourier transform infrared spectroscopy. Finally, the dissolution behavior was determined and the aerosol that was formed by the powder was characterized. The powder had large specific surface areas (~ 160 m(2)). The water vapor uptake was dependant linearly on the drug load. The type of solid dispersion was a combination of a solid solution and solid suspension. At a 10% drug load, 55% of the CsA in the powder was in the form of a solid solution and 45% as solid suspension. At 50% drug load, the powder contained 90% of CsA as solid suspension. The powder showed excellent dispersion characteristics as shown by the high emitted fraction (95%), respirable fraction (75%), and fine-particle fraction (50%). The solid dispersions consisted of relatively large (x(50) approximately 7 mum), but low-density particles (rho approximately 0.2 g/cm(3)). The solid dispersions dissolved faster than the physical mixture, and inulin dissolved faster than CsA. The spray freeze-drying with inulin increased the specific surface area and wettability of CsA. In conclusion, the developed powder seems suitable for inhalation in the local treatment of lung transplant patients.
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Affiliation(s)
- Gerrit S Zijlstra
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands.
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