1
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Kalhor H, Abolhasani H, Kalhor R, Komeili Movahhed T, Rahimi H. Interactions of heparin derivatives with recombinant human keratinocyte growth factor: Structural stability and bioactivity effect study. Proteins 2023; 91:542-554. [PMID: 36424813 DOI: 10.1002/prot.26448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 11/05/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022]
Abstract
Heparin and heparan sulfate are important glycosaminoglycans that can regulate the activities of many vital proteins, especially the fibroblast growth factor (FGF) family. Because FGF7 (KGF) has an important role in tissue repair and maintaining the integrity of the mucosal barrier, recombinant human keratinocyte growth factor (rhKGF, palifermin) has been approved for the treatment of wound healing and oral cavity. Due to heparin plays an important role in the KGF signaling pathway, a more detailed study of the drug-drug interactions (DDIs) between rhKGF and heparin at the atomic level and investigating their synergistic effect on each other in terms of biology, especially in silico, is necessary for a better understanding of DDIs. In this study, DDIs between rhKGF and low-molecular weight heparin types (LMWH) were investigated. In this regard, scrutiny of the influence of the synergistic heparin types on the structure and biostability of rhKGF is accomplished using computational methods such as molecular docking and molecular dynamic simulations (MDs). Subsequently, the motion behavior of rhKGF in interaction with LMWHs was evaluated based on eigenvectors by using principal component analysis (PCA). Also, the binding free energies of rhKGF-LMWH complexes were calculated by the molecular mechanics/Poisson-Boltzmann surface area (MM-BPSA) method. The result showed that rhKGF-idraparinux (-6.9 kcal/mol) and rhKGF-heparin (-6.0 kcal/mol) complexes had significant binding affinity as well as they had a more stable binding to rhKGF than to other LMWH during 100 ns simulation. However, in order to confirm the curative effect of these drugs, clinical trials must be done.
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Affiliation(s)
- Hourieh Kalhor
- Cellular and Molecular Research Center, Qom University of Medical Sciences, Qom, Iran
| | - Hoda Abolhasani
- Cellular and Molecular Research Center, Qom University of Medical Sciences, Qom, Iran.,Department of Pharmacology, School of Medicine, Qom University of Medical Sciences, Qom, Iran
| | - Reyhaneh Kalhor
- Cellular and Molecular Research Center, Qom University of Medical Sciences, Qom, Iran.,Department of Genetics, Colleague of Sciences, Kazerun Branch, Islamic Azad University, Kazerun, Iran
| | | | - Hamzeh Rahimi
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran.,Host-pathogen Interaction Department, Texas Biomedical Research Institute, San Antonio, Texas, USA
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2
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Alizadeh AA, Jafari B, Dastmalchi S. Application of bioinformatics and molecular dynamics simulation approaches for identification of fibroblast growth factor 10 analogues with potentially improved thermostability. Growth Factors 2020; 38:197-209. [PMID: 34121575 DOI: 10.1080/08977194.2021.1881501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Fibroblast growth factor 10 functions as a paracrine mesenchymal molecule to initiate signalling pathways regarding to cellular development and health. However, the low thermal stability restricts it's functionality in the human body and the shelf-life of FGF10-based formulations. The current study aimed to employ rational design and bioinformatics approaches to identify some point mutations which may improve the thermal stability of FGF10. Bioinformatics analyses resulted in N105D, C106F, K144R, K153M and I156R as the potential stability conferring mutations. The identified mutants were subjected to MD simulation indicating that all mutations are both structurally and energetically favoured. Finally, the effects of the identified mutations on receptor binding of FGF10 were predicted and the results showed that K144R and K153M mutations may increase the binding affinity relative to the wild type. The findings of the current study propose potentially improved FGF10 analogues for further experimental investigations.
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Affiliation(s)
- Ali Akbar Alizadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Jafari
- Department of Medicinal Chemistry, School of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
| | - Siavoush Dastmalchi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
- Faculty of Pharmacy, Near East University, Nicosia, Turkey
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3
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Ferreira LM, Alonso JD, Kiill CP, Ferreira NN, Buzzá HH, Martins de Godoi DR, de Britto D, Assis OBG, Seraphim TV, Borges JC, Gremião MPD. Exploiting supramolecular interactions to produce bevacizumab-loaded nanoparticles for potential mucosal delivery. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.04.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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4
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Manning MC, Liu J, Li T, Holcomb RE. Rational Design of Liquid Formulations of Proteins. THERAPEUTIC PROTEINS AND PEPTIDES 2018; 112:1-59. [DOI: 10.1016/bs.apcsb.2018.01.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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5
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Alginate hydrogel improves anti-angiogenic bevacizumab activity in cancer therapy. Eur J Pharm Biopharm 2017; 119:271-282. [DOI: 10.1016/j.ejpb.2017.06.028] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 04/09/2017] [Accepted: 06/28/2017] [Indexed: 01/30/2023]
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6
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In silico enhancement of the stability and activity of keratinocyte growth factor. J Theor Biol 2017; 418:111-121. [DOI: 10.1016/j.jtbi.2017.01.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 10/19/2016] [Accepted: 01/05/2017] [Indexed: 11/18/2022]
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7
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Gregoritza M, Goepferich AM, Brandl FP. Polyanions effectively prevent protein conjugation and activity loss during hydrogel cross-linking. J Control Release 2016; 238:92-102. [DOI: 10.1016/j.jconrel.2016.07.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 07/17/2016] [Accepted: 07/18/2016] [Indexed: 12/29/2022]
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8
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El Agha E, Kosanovic D, Schermuly RT, Bellusci S. Role of fibroblast growth factors in organ regeneration and repair. Semin Cell Dev Biol 2015; 53:76-84. [PMID: 26459973 DOI: 10.1016/j.semcdb.2015.10.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 10/08/2015] [Indexed: 02/04/2023]
Abstract
In its broad sense, regeneration refers to the renewal of lost cells, tissues or organs as part of the normal life cycle (skin, hair, endometrium etc.) or as part of an adaptive mechanism that organisms have developed throughout evolution. For example, worms, starfish and amphibians have developed remarkable regenerative capabilities allowing them to voluntarily shed body parts, in a process called autotomy, only to replace the lost parts afterwards. The bizarre myth of the fireproof homicidal salamander that can survive fire and poison apple trees has persisted until the 20th century. Salamanders possess one of the most robust regenerative machineries in vertebrates and attempting to draw lessons from limb regeneration in these animals and extrapolate the knowledge to mammals is a never-ending endeavor. Fibroblast growth factors are potent morphogens and mitogens that are highly conserved among the animal kingdom. These growth factors play key roles in organogenesis during embryonic development as well as homeostatic balance during postnatal life. In this review, we provide a summary about the current knowledge regarding the involvement of fibroblast growth factor signaling in organ regeneration and repair. We also shed light on the use of these growth factors in previous and current clinical trials in a wide array of human diseases.
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Affiliation(s)
- Elie El Agha
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Excellence Cluster Cardio-Pulmonary System (ECCPS), Justus-Liebig-University, Giessen, Hessen, Germany
| | - Djuro Kosanovic
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Excellence Cluster Cardio-Pulmonary System (ECCPS), Justus-Liebig-University, Giessen, Hessen, Germany
| | - Ralph T Schermuly
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Excellence Cluster Cardio-Pulmonary System (ECCPS), Justus-Liebig-University, Giessen, Hessen, Germany
| | - Saverio Bellusci
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Excellence Cluster Cardio-Pulmonary System (ECCPS), Justus-Liebig-University, Giessen, Hessen, Germany; Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.
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9
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Buchtova M, Chaloupkova R, Zakrzewska M, Vesela I, Cela P, Barathova J, Gudernova I, Zajickova R, Trantirek L, Martin J, Kostas M, Otlewski J, Damborsky J, Kozubik A, Wiedlocha A, Krejci P. Instability restricts signaling of multiple fibroblast growth factors. Cell Mol Life Sci 2015; 72:2445-59. [PMID: 25854632 PMCID: PMC11113989 DOI: 10.1007/s00018-015-1856-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 02/07/2015] [Accepted: 02/09/2015] [Indexed: 10/24/2022]
Abstract
Fibroblast growth factors (FGFs) deliver extracellular signals that govern many developmental and regenerative processes, but the mechanisms regulating FGF signaling remain incompletely understood. Here, we explored the relationship between intrinsic stability of FGF proteins and their biological activity for all 18 members of the FGF family. We report that FGF1, FGF3, FGF4, FGF6, FGF8, FGF9, FGF10, FGF16, FGF17, FGF18, FGF20, and FGF22 exist as unstable proteins, which are rapidly degraded in cell cultivation media. Biological activity of FGF1, FGF3, FGF4, FGF6, FGF8, FGF10, FGF16, FGF17, and FGF20 is limited by their instability, manifesting as failure to activate FGF receptor signal transduction over long periods of time, and influence specific cell behavior in vitro and in vivo. Stabilization via exogenous heparin binding, introduction of stabilizing mutations or lowering the cell cultivation temperature rescues signaling of unstable FGFs. Thus, the intrinsic ligand instability is an important elementary level of regulation in the FGF signaling system.
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Affiliation(s)
- Marcela Buchtova
- Department of Anatomy, Histology and Embryology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
- Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Brno, Czech Republic
- Department of Experimental Biology, Masaryk University, Brno, Czech Republic
| | - Radka Chaloupkova
- Loschmidt Laboratories, Department of Experimental Biology and Research Centre for Toxic Compounds in the Environment RECETOX, Masaryk University, Brno, Czech Republic
| | | | - Iva Vesela
- Department of Anatomy, Histology and Embryology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
- Department of Experimental Biology, Masaryk University, Brno, Czech Republic
| | - Petra Cela
- Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Brno, Czech Republic
- Department of Experimental Biology, Masaryk University, Brno, Czech Republic
| | - Jana Barathova
- Department of Biology, Faculty of Medicine, Masaryk University, Room A3/246, Kamenice 5, 625 00 Brno, Czech Republic
| | - Iva Gudernova
- Department of Biology, Faculty of Medicine, Masaryk University, Room A3/246, Kamenice 5, 625 00 Brno, Czech Republic
| | - Renata Zajickova
- Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Brno, Czech Republic
| | - Lukas Trantirek
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands
| | - Jorge Martin
- Medical Genetics Institute, Cedars-Sinai Medical Center, Los Angeles, CA USA
| | - Michal Kostas
- Department of Protein Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Jacek Otlewski
- Department of Protein Engineering, University of Wroclaw, Wroclaw, Poland
| | - Jiri Damborsky
- Loschmidt Laboratories, Department of Experimental Biology and Research Centre for Toxic Compounds in the Environment RECETOX, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital, Brno, Czech Republic
| | - Alois Kozubik
- Department of Experimental Biology, Masaryk University, Brno, Czech Republic
- Department of Cytokinetics, Institute of Biophysics, Academy of Sciences of the Czech Republic, Brno, Czech Republic
| | - Antoni Wiedlocha
- Centre for Cancer Biomedicine, University of Oslo, Oslo, Norway
- Department of Biochemistry, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Pavel Krejci
- Department of Biology, Faculty of Medicine, Masaryk University, Room A3/246, Kamenice 5, 625 00 Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital, Brno, Czech Republic
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA USA
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10
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Nashine VC, Kroetsch AM, Sahin E, Zhou R, Adams ML. Orthogonal high-throughput thermal scanning method for rank ordering protein formulations. AAPS PharmSciTech 2013; 14:1360-6. [PMID: 24002823 DOI: 10.1208/s12249-013-0026-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 08/20/2013] [Indexed: 11/30/2022] Open
Abstract
A high-throughput thermal-scanning method to rank-order formulation conditions for therapeutic proteins is described. Apparent transition temperatures for unfolding and aggregation of four different proteins are determined using the dyes SYPRO Orange and thioflavin T (ThT) under a variety of buffer conditions. The results indicate that the ThT-based thermal scanning method offers several advantages over the previously described SYPRO Orange-based thermal scanning and allows rapid rank ordering of solution conditions relevant toward long-term storage of therapeutic molecules. The method is also amenable to high protein concentration and does not require sample dilution or extensive preparation. Additionally, this parallel use of SYPRO Orange and ThT can be readily applied to the screening of mutants for their unfolding and aggregation propensities.
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11
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Liu L, Qi W, Schwartz DK, Randolph TW, Carpenter JF. The effects of excipients on protein aggregation during agitation: an interfacial shear rheology study. J Pharm Sci 2013; 102:2460-70. [PMID: 23712900 DOI: 10.1002/jps.23622] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 04/30/2013] [Accepted: 04/30/2013] [Indexed: 11/07/2022]
Abstract
We investigated the effects of excipients in solutions of keratinocyte growth factor 2 (KGF-2) on protein aggregation during agitation as well as on interfacial shear rheology at the air-water interface. Samples were incubated with or without agitation, and in the presence or absence of the excipients heparin, sucrose, or polysorbate 80 (PS80). The effect of excipients on the extent of protein aggregation was determined by UV-visible spectroscopy and micro-flow imaging. Interfacial shear rheology was used to detect the gelation time and strength of protein gels at the air-water interface. During incubation, protein particles of size ≥1 μm and insoluble aggregates formed faster for KGF-2 solutions subjected to agitation. Addition of either heparin or sucrose promoted protein aggregation during agitation. In contrast, PS80 substantially inhibited agitation-induced KGF-2 aggregation but facilitated protein particulate formation in quiescent solutions. The combination of PS80 and heparin or sucrose completely prevented protein aggregation during both nonagitated and agitated incubations. Interfacial rheological measurements showed that KGF-2 in buffer alone formed an interfacial gel within a few minutes. In the presence of heparin, KGF-2 interfacial gels formed too quickly for gelation time to be determined. KGF-2 formed gels in about 10 min in the presence of sucrose. The presence of PS80 in the formulation inhibited gelation of KGF-2. Furthermore, the interfacial gels formed by the protein in the absence of PS80 were reversible when PS80 was added to the samples after gelation. Therefore, there is a correspondence between formulations that exhibited interfacial gelation and formulations that exhibited agitation-induced aggregation.
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Affiliation(s)
- Lu Liu
- Department of Pharmaceutical Sciences, Center for Pharmaceutical Biotechnology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, USA
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12
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Plichta JK, Radek KA. Sugar-coating wound repair: a review of FGF-10 and dermatan sulfate in wound healing and their potential application in burn wounds. J Burn Care Res 2012; 33:299-310. [PMID: 22561305 PMCID: PMC3348504 DOI: 10.1097/bcr.0b013e318240540a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Thousands of patients suffer from burn injuries each year, yet few therapies have been developed to accelerate the wound healing process. Most fibroblast growth factors (FGFs) have been extensively evaluated but only a few have been found to participate in the wound healing process. In particular, FGF-10 is robustly increased in the wound microenvironment after injury and has demonstrated some ability to promote wound healing in vitro and in vivo. Glycosaminoglycans are linear carbohydrates that participate in wound repair by influencing cytokine/growth factor localization and interaction with cognate receptors. Dermatan sulfate (DS) is the most abundant glycosaminoglycan in human wound fluid and has been postulated to be directly involved in the healing process. Recently, the combination of FGF-10 and DS demonstrated the potential to accelerate wound healing via increased keratinocyte proliferation and migration. Based on these preliminary studies, DS may serve as a cofactor for FGF-10, and together they are likely to expedite the healing process by stimulating keratinocyte activity. As a specific subtype of wounds, the overall healing process of burn injuries does not significantly differ from other types of wounds, where optimal repair results in matrix regeneration and complete reepithelialization. At present, standard burn treatment primarily involves topical application of antimicrobial agents, while no routine therapies target acceleration of reepithelialization, the key to wound closure. Thus, this novel therapeutic combination could be used in conjunction with some of the current therapies, but it would have the unique ability to initiate wound healing by stimulating keratinocyte epithelialization.
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Affiliation(s)
- Jennifer K Plichta
- Department of Surgery, Burn and Shock Trauma Institute, Loyola University Medical Center, Maywood, Illinois 60153, USA
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13
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Khondee S, Olsen CM, Zeng Y, Middaugh CR, Berkland C. Noncovalent PEGylation by Polyanion Complexation as a Means To Stabilize Keratinocyte Growth Factor-2 (KGF-2). Biomacromolecules 2011; 12:3880-94. [DOI: 10.1021/bm2007967] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Supang Khondee
- Department
of Pharmaceutical Chemistry and ‡Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence,
Kansas 66047, United States
| | - Christopher M. Olsen
- Department
of Pharmaceutical Chemistry and ‡Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence,
Kansas 66047, United States
| | - Yuhong Zeng
- Department
of Pharmaceutical Chemistry and ‡Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence,
Kansas 66047, United States
| | - C. Russell Middaugh
- Department
of Pharmaceutical Chemistry and ‡Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence,
Kansas 66047, United States
| | - Cory Berkland
- Department
of Pharmaceutical Chemistry and ‡Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence,
Kansas 66047, United States
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14
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Kamerzell TJ, Esfandiary R, Joshi SB, Middaugh CR, Volkin DB. Protein-excipient interactions: mechanisms and biophysical characterization applied to protein formulation development. Adv Drug Deliv Rev 2011; 63:1118-59. [PMID: 21855584 DOI: 10.1016/j.addr.2011.07.006] [Citation(s) in RCA: 350] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 07/19/2011] [Accepted: 07/26/2011] [Indexed: 12/18/2022]
Abstract
The purpose of this review is to demonstrate the critical importance of understanding protein-excipient interactions as a key step in the rational design of formulations to stabilize and deliver protein-based therapeutic drugs and vaccines. Biophysical methods used to examine various molecular interactions between solutes and protein molecules are discussed with an emphasis on applications to pharmaceutical excipients in terms of their effects on protein stability. Key mechanisms of protein-excipient interactions such as electrostatic and cation-pi interactions, preferential hydration, dispersive forces, and hydrogen bonding are presented in the context of different physical states of the formulation such as frozen liquids, solutions, gels, freeze-dried solids and interfacial phenomenon. An overview of the different classes of pharmaceutical excipients used to formulate and stabilize protein therapeutic drugs is also presented along with the rationale for use in different dosage forms including practical pharmaceutical considerations. The utility of high throughput analytical methodologies to examine protein-excipient interactions is presented in terms of expanding formulation design space and accelerating experimental timelines.
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Affiliation(s)
- Tim J Kamerzell
- Cardiovascular Research Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA.
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15
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Interactions of formulation excipients with proteins in solution and in the dried state. Adv Drug Deliv Rev 2011; 63:1053-73. [PMID: 21756953 DOI: 10.1016/j.addr.2011.06.011] [Citation(s) in RCA: 265] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 06/18/2011] [Accepted: 06/23/2011] [Indexed: 12/12/2022]
Abstract
A variety of excipients are used to stabilize proteins, suppress protein aggregation, reduce surface adsorption, or to simply provide physiological osmolality. The stabilizers encompass a wide variety of molecules including sugars, salts, polymers, surfactants, and amino acids, in particular arginine. The effects of these excipients on protein stability in solution are mainly caused by their interaction with the protein and the container surface, and most importantly with water. Some excipients stabilize proteins in solution by direct binding, while others use a number of fundamentally different mechanisms that involve indirect interactions. In the dry state, any effects that the excipients confer to proteins through their interactions with water are irrelevant, as water is no longer present. Rather, the excipients stabilize proteins through direct binding and their effects on the physical properties of the dried powder. This review will describe a number of mechanisms by which the excipients interact with proteins in solution and with various interfaces, and their effects on the physical properties of the dried protein structure, and explain how the various interaction forces are related to their observed effects on protein stability.
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16
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Casares-Atienza S, Weininger U, Cámara-Artigas A, Balbach J, Garcia-Mira MM. Three-state thermal unfolding of onconase. Biophys Chem 2011; 159:267-74. [PMID: 21840114 DOI: 10.1016/j.bpc.2011.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 07/18/2011] [Accepted: 07/19/2011] [Indexed: 10/18/2022]
Abstract
Onconase is a member of the ribonuclease A superfamily currently in phase IIIb clinical trials as a treatment for malign mesothelioma due to its cytotoxic activity selective against tumor-cells. In this work, we have studied the equilibrium thermal unfolding of onconase using a combination of several structural and biophysical techniques. Our results indicate that at least one significantly populated intermediate, which implies the exposure of hydrophobic surface and significant changes in the environment around Trp3, occurs during the equilibrium unfolding process of this protein. The intermediate begins to populate at about 30° below the global unfolding temperature, reaching a maximum population of nearly 60%, 10° below the global unfolding temperature.
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Affiliation(s)
- Salvador Casares-Atienza
- Departamento de Química Física, Facultad de Ciencias, Universidad de Granada. Avda. Fuentenueva s/n. 18071 Granada, Spain
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17
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Seyrek E, Dubin P. Glycosaminoglycans as polyelectrolytes. Adv Colloid Interface Sci 2010; 158:119-29. [PMID: 20444439 DOI: 10.1016/j.cis.2010.03.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Revised: 02/27/2010] [Accepted: 03/03/2010] [Indexed: 02/02/2023]
Abstract
One of the barriers to understanding structure-property relations for glycosaminoglycans has been the lack of constructive interplay between the principles and methodologies of the life sciences (molecular biology, biochemistry and cell biology) and the physical sciences, particularly in the field of polyelectrolytes. To address this, we first review the similarities and differences between the physicochemical properties of GAGs and other statistical chain polyelectrolytes of both natural and abioitic origin. Since the biofunctionality and regulation of the structures of GAGs is intimately connected with interactions with their cognate proteins, we particularly compare and contrast aspects of protein binding, i.e. effects of both GAGs and other polyelectrolytes on protein stability, protein aggregation and phase behavior. The protein binding affinities and their dependences on pH and ionic strength for the two groups are discussed not only in terms of observable differences, but also with regard to contrasting descriptions of the bound state and the role of electrostatics. We conclude that early studies of the heparin-Antithromin system, proceeding to a large extent through the methods and models of protein chemistry and drug discovery, established not only many enabling precedents but also constraining paradigms. Current studies on heparan sulfate and chondroitin sulfate seem to reflect a more ecumenical view likely to be more compatible with concepts from physical and polymer chemistry.
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Affiliation(s)
- Emek Seyrek
- CNRS, Insitut Charles Sadron, 23 Rue Loess, BP 84047, F-67037 Strasbourg 2, France
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18
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Samra HS, He F, Bhambhani A, Pipkin J, Zimmerer R, Joshi SB, Russell Middaugh C. The Effects of Substituted Cyclodextrins on the Colloidal and Conformational Stability of Selected Proteins. J Pharm Sci 2010; 99:2800-18. [DOI: 10.1002/jps.22053] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Manning MC, Chou DK, Murphy BM, Payne RW, Katayama DS. Stability of protein pharmaceuticals: an update. Pharm Res 2010; 27:544-75. [PMID: 20143256 DOI: 10.1007/s11095-009-0045-6] [Citation(s) in RCA: 751] [Impact Index Per Article: 53.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Accepted: 12/27/2009] [Indexed: 12/16/2022]
Abstract
In 1989, Manning, Patel, and Borchardt wrote a review of protein stability (Manning et al., Pharm. Res. 6:903-918, 1989), which has been widely referenced ever since. At the time, recombinant protein therapy was still in its infancy. This review summarizes the advances that have been made since then regarding protein stabilization and formulation. In addition to a discussion of the current understanding of chemical and physical instability, sections are included on stabilization in aqueous solution and the dried state, the use of chemical modification and mutagenesis to improve stability, and the interrelationship between chemical and physical instability.
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20
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Huang M, Berkland C. Controlled release of repifermin from polyelectrolyte complexes stimulates endothelial cell proliferation. J Pharm Sci 2009; 98:268-80. [PMID: 18425807 PMCID: PMC4126262 DOI: 10.1002/jps.21412] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The therapeutic value of many growth factors is often hindered by the narrow therapeutic index and sustained concentrations required for efficacy. Controlled release approaches provide a valuable tool to achieve these goals; however, growth factor stability must be maintained. Repifermin is a truncated form of fibroblast growth factor-10, also known as keratinocyte growth factor-2, that exhibits promise in wound healing applications; however, controlled release formulation presents a challenge for this labile protein. Taking advantage of the heparin-binding motif of this class of biopharmaceuticals, Repifermin was effectively stabilized and packaged in polyelectrolyte complexes. In the presence of dextran sulfate, the unfolding temperature of this growth factor was increased by approximately 10 degrees C as confirmed by a variety of spectroscopic techniques. Dextran sulfate with bound Repifermin was then complexed with several polycations (chitosan, poly-L-lysine, and polyethylenimine) resulting in the formation of approximately 250 nm polyelectrolyte complexes that entrapped the protein with approximately 70-80% efficiency. Release was controlled for more than 10 days and the mitogenic activity of Repifermin on human umbilical cord vascular endothelial cells was significantly enhanced, whereas no effect was noted for free Repifermin.
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Affiliation(s)
- Min Huang
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS 66047
| | - Cory Berkland
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS 66047
- Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence, KS 66047
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Giger K, Vanam RP, Seyrek E, Dubin PL. Suppression of Insulin Aggregation by Heparin. Biomacromolecules 2008; 9:2338-44. [DOI: 10.1021/bm8002557] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katie Giger
- Department of Chemistry, Indiana University-Purdue University at Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202
| | - Ram P. Vanam
- Department of Chemistry, Indiana University-Purdue University at Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202
| | - Emek Seyrek
- Department of Chemistry, Indiana University-Purdue University at Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202
| | - Paul L. Dubin
- Department of Chemistry, Indiana University-Purdue University at Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202
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Lucas LH, Ersoy BA, Kueltzo LA, Joshi SB, Brandau DT, Thyagarajapuram N, Peek LJ, Middaugh CR. Probing protein structure and dynamics by second-derivative ultraviolet absorption analysis of cation-{pi} interactions. Protein Sci 2006; 15:2228-43. [PMID: 16963649 PMCID: PMC2242397 DOI: 10.1110/ps.062133706] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
We describe an alternate approach for studying protein structure using the detection of ultraviolet (UV) absorbance peak shifts of aromatic amino acid side chains induced by the presence of salts. The method is based on the hypothesis that salt cations (Li+, Na+, and Cs+) of varying sizes can differentially diffuse through protein matrices and interact with benzyl, phenyl, and indole groups through cation-pi interactions. We have investigated the potential of this method to probe protein dynamics by measuring high resolution second-derivative UV spectra as a function of salt concentration for eight proteins of varying physical and chemical properties and the N-acetylated C-ethyl esterified amino acids to represent totally exposed side chains. We show that small shifts in the wavelength maxima for Phe, Tyr, and Trp in the presence of high salt concentrations can be reliably measured and that the magnitude and direction of the peak shifts are influenced by several factors, including protein size, charge, and the local environment and solvent accessibility of the aromatic groups. Evaluating the empirical UV spectral data in light of known protein structural information shows that probing cation-pi interactions in proteins reveals unique information about the influence of structure on aromatic side chain spectroscopic behavior.
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Affiliation(s)
- Laura H Lucas
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66047, USA
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