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Tian J, Fu C, Li W, Li N, Yao L, Xiao J. Biomimetic tri-layered artificial skin comprising silica gel-collagen membrane-collagen porous scaffold for enhanced full-thickness wound healing. Int J Biol Macromol 2024; 266:131233. [PMID: 38554907 DOI: 10.1016/j.ijbiomac.2024.131233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/10/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
Full-thickness wounds are severe cutaneous damages with destroyed self-healing function, which need efficient clinical interventions. Inspired by the hierarchical structure of natural skin, we have for the first time developed a biomimetic tri-layered artificial skin (TLAS) comprising silica gel-collagen membrane-collagen porous scaffold for enhanced full-thickness wound healing. The TLAS with the thickness of 3-7 mm displays a hierarchical nanostructure consisting of the top homogeneous silica gel film, the middle compact collagen membrane, and the bottom porous collagen scaffold, exquisitely mimicking the epidermis, basement membrane and dermis of natural skin, respectively. The 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide/N-Hydroxysuccinimide-dehydrothermal (EDC/NHS-DHT) dual-crosslinked collagen composite bilayer, with a crosslinking degree of 79.5 %, displays remarkable biocompatibility, bioactivity, and biosafety with no risk of hemolysis and pyrogen reactions. Notably, the extra collagen membrane layer provides a robust barrier to block the penetration of silica gel into the collagen porous scaffold, leading to the TLAS with enhanced biocompatibility and bioactivity. The full-thickness wound rat model studies have indicated the TLAS significantly facilitates the regeneration of full-thickness defects by accelerating re-epithelization, collagen deposition and migration of skin appendages. The highly biocompatible and bioactive tri-layered artificial skin provides an improved treatment for full-thickness wounds, which has great potential in tissue engineering.
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Affiliation(s)
- Jing Tian
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China; Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, PR China
| | - Caihong Fu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China; Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, PR China
| | - Wenhua Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China; Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, PR China
| | - Na Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China; Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, PR China
| | - Linyan Yao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China; School of Life Science, Lanzhou University, Lanzhou 730000, PR China; Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, PR China.
| | - Jianxi Xiao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China; Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, PR China.
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2
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Zheng H. Devitrification of lyoprotectants: A critical determinant for bacteriophages inactivation in freeze-drying and storage. Food Res Int 2023; 173:113307. [PMID: 37803616 DOI: 10.1016/j.foodres.2023.113307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 10/08/2023]
Abstract
Bacteriophages as promising natural antibacterial additives are widely used in food processing and storage. Although freeze-drying is an economical and efficient way to preserve phages, so far there is limited data for phage freeze-drying and key factors that inactivate phages during freeze-drying and storage remain unknown. Here we systemically compared different types of saccharides/polyols (dextran 5000, glucose, sucrose, trehalose, mannitol, and xylitol) as lyoprotectants and their potential ratios for phage freeze-drying. The pH and osmotic pressure tolerance of bacteriophages were determined and all lyoprotectant solutions were within the tolerance range of phages. Combined with thermodynamic data, it was found that only completely vitrified formulations (glucose, sucrose, and trehalose) could preserve phages during freeze-drying. Selected freeze-dried phages were further arranged for an accelerated stability study. Most formulations stored at higher temperatures (≥25 ℃) presented devitrification, resulting in a significant drop in phage titer. 10% (w/v) of sucrose was recommended as the best formulation for freeze-dried phage storage with less devitrification and a better fitting coefficient (R2 = 0.9592) to the Arrhenius equation, predictively reaching shelf-time as 1093.3 days at 4 ℃ storage. These findings implied that the devitrification of lyoprotectants was the critical determinant for bacteriophage inactivation both in freeze-drying and storage.
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Affiliation(s)
- Huangliang Zheng
- School of Pharmacy, The Chinese University of Hong Kong, Hong Kong, China.
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3
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Zhang C, Berg A, Joe CCD, Dalby PA, Douglas AD. Lyophilization to enable distribution of ChAdOx1 and ChAdOx2 adenovirus-vectored vaccines without refrigeration. NPJ Vaccines 2023; 8:85. [PMID: 37277337 PMCID: PMC10240132 DOI: 10.1038/s41541-023-00674-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 05/12/2023] [Indexed: 06/07/2023] Open
Abstract
Distribution of vaccines which require refrigerated or frozen storage can be challenging and expensive. The adenovirus vector platform has been widely used for COVID-19 vaccines while several further candidate vaccines using the platform are in clinical development. In current liquid formulations, adenoviruses require distribution at 2-8 °C. The development of formulations suitable for ambient temperature distribution would be advantageous. Previous peer-reviewed reports of adenovirus lyophilization are relatively limited. Here, we report the development of a formulation and process for lyophilization of simian adenovirus-vectored vaccines based on the ChAdOx1 platform. We describe the iterative selection of excipients using a design of experiments approach, and iterative cycle improvement to achieve both preservation of potency and satisfactory cake appearance. The resulting method achieved in-process infectivity titre loss of around 50%. After drying, there was negligible further loss over a month at 30 °C. Around 30% of the predrying infectivity remained after a month at 45 °C. This performance is likely to be suitable for 'last leg' distribution at ambient temperature. This work may also facilitate the development of other product presentations using dried simian adenovirus-vectored vaccines.
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Affiliation(s)
- Cheng Zhang
- Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London, WC1E 6BT, United Kingdom
| | - Adam Berg
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, OX3 7DQ, Oxford, United Kingdom
| | - Carina C D Joe
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, OX3 7DQ, Oxford, United Kingdom
| | - Paul A Dalby
- Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London, WC1E 6BT, United Kingdom
| | - Alexander D Douglas
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, OX3 7DQ, Oxford, United Kingdom.
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4
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Kharatyan T, Igawa S, Gopireddy SR, Ogawa T, Kodama T, Scherließ R, Urbanetz NA. Impact of Post-Freeze Annealing on Shrinkage of Sucrose and Trehalose Lyophilisates. Int J Pharm 2023; 641:123051. [PMID: 37196881 DOI: 10.1016/j.ijpharm.2023.123051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 04/30/2023] [Accepted: 05/11/2023] [Indexed: 05/19/2023]
Abstract
Freeze-drying of pharmaceuticals produces lyophilisates with properties that depend on both the formulation and the process. Characterisation of the lyophilisate in terms of appearance is necessary not only to produce a visually appealing product, but also to gain insight into the freeze-drying process. The present study investigates the impact of post-freeze annealing on the volume of lyophilisates. For this purpose, sucrose and trehalose solutions were freeze-dried with different annealing conditions and the resulting lyophilisates were analysed with a 3D structured light scanner. The external structure of the lyophilisates was found to be dependent on the bulk materials as well as the choice of vials, while the volume was influenced by the annealing time and temperature. Additionally, differential scanning calorimetry was used to determine glass transition temperatures of frozen samples. As a novelty, the volumes of the lyophilisates and their corresponding glass transition temperatures were compared. This resulted in a correlation supporting the theory that the shrinkage of lyophilisates depends on the amount of residual water in the freeze-concentrated amorphous phase before drying. Understanding the volume change of lyophilisates, in combination with material properties such as glass transition temperature, forms the basis for relating physicochemical properties to process parameters in lyophilisation.
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Affiliation(s)
- Tigran Kharatyan
- Department of Pharmaceutics and Biopharmaceutics, Kiel University, 24118 Kiel, Germany; Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany.
| | - Shunya Igawa
- Formulation Technology Research Laboratories, Daiichi Sankyo Co. Ltd., Hiratsuka 254-0014, Japan.
| | - Srikanth R Gopireddy
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany.
| | - Toru Ogawa
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany.
| | - Tatsuhiro Kodama
- Formulation Technology Research Laboratories, Daiichi Sankyo Co. Ltd., Hiratsuka 254-0014, Japan.
| | - Regina Scherließ
- Department of Pharmaceutics and Biopharmaceutics, Kiel University, 24118 Kiel, Germany.
| | - Nora A Urbanetz
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany.
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5
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Long-Circulating and Fusogenic Liposomes Loaded with Paclitaxel and Doxorubicin: Effect of Excipient, Freezing, and Freeze-Drying on Quality Attributes. Pharmaceutics 2022; 15:pharmaceutics15010086. [PMID: 36678715 PMCID: PMC9866235 DOI: 10.3390/pharmaceutics15010086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/03/2022] [Accepted: 12/06/2022] [Indexed: 12/30/2022] Open
Abstract
Liposomes can increase plasma half-life, enhance targeting, and diminish the side-effects of loaded drugs. On the downside, physical and chemical instabilities of dispersions often result in a reduced lifespan, which limits their availability on the market. Solid formulations obtained by freeze-drying can immobilize vesicles and provide extended shelf life. For both processes, the choice of excipients and process parameters are crucial to protect the carrier layers against tension caused by freezing and/or dehydration. The aim of this work is to evaluate the influence of freezing and drying parameters, besides excipient choice, to obtain solid long-circulating and fusogenic liposomes (LCFL-PTX/DXR) co-encapsulating paclitaxel (PTX) and doxorubicin (DXR) at a synergistic ratio (1:10). METHODS LCFL-PTX/DXR was evaluated by freeze-drying microscopy (glass transition, Tg'), differential scanning calorimetry (collapse temperature, Tc), freeze-thawing and freeze-drying processes. Freeze-dried samples were evaluated by thermogravimetry (residual moisture) and the resuspended liposomes were characterized in terms of size, polydispersity index (PI), zeta potential (ZP), and drug content. Liposomes morphology was evaluated by cryomicroscopy. RESULTS Trehalose protected PTX cargo upon freeze-thawing and more than 80% of the original DXR retention. The formulations with trehalose resulted in a cake with 5-7% of moisture content (200-240 nm); 44-60% of PTX retention, and 25-35% of DXR retention, with the variations caused by cryoprotector concentration and process changes. CONCLUSIONS Trehalose protected liposome integrity, maintaining PTX retention and most of DXR upon freeze-thawing. Freeze-drying reduced the retention of both drugs inside all liposomes, whereas formulation with trehalose presented minor losses. Therefore, this frozen formulation is an alternative product option, with no need for manipulation before use.
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Hsein H, Auffray J, Noel T, Tchoreloff P. Recent advances and persistent challenges in the design of freeze-drying process for monoclonal antibodies. Pharm Dev Technol 2022; 27:942-955. [PMID: 36206457 DOI: 10.1080/10837450.2022.2131818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Monoclonal antibodies constitute nowadays an important therapeutic class and the number of approved molecules for clinical uses continues to increase, achieving considerable part of the therapeutic market. Yet, the stability in solution of these biopharmaceuticals is often low. That's why freeze-drying has been and remains the method of choice to obtain monoclonal antibodies in the solid state and to improve their stability. The design of freeze-drying process and its optimization are still topical subjects of interest and the pharmaceutical industry is regularly challenged by the requirements of quality, safety and efficiency set by the regulatory authorities. These requirements imply a deep understanding of each step of the freeze-drying process, developing techniques to control the critical parameters and to monitor the quality of the intermediate and the final product. In addition to quality issues, the optimization of the freeze-drying process in order to reduce the cycle length is of great interest since freeze-drying is known to be an energy-expensive and time consuming process. In this review, we will present the recent literature dealing with the freeze-drying of monoclonal antibodies and focus on the process parameters and strategies used to improve the stability of these molecules and to optimize the FD process.
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Affiliation(s)
- Hassana Hsein
- Univ. Bordeaux, CNRS, Arts et Metiers Institute of Technology, Bordeaux INP, INRAE, I2M Bordeaux, F-33400 Talence, France
| | - Julie Auffray
- Univ. Bordeaux, CNRS, Arts et Metiers Institute of Technology, Bordeaux INP, INRAE, I2M Bordeaux, F-33400 Talence, France.,Univ. Bordeaux, CNRS, Microbiologie Fondamentale et Pathogénicité, UMR 5234, Bordeaux, France
| | - Thierry Noel
- Univ. Bordeaux, CNRS, Microbiologie Fondamentale et Pathogénicité, UMR 5234, Bordeaux, France
| | - Pierre Tchoreloff
- Univ. Bordeaux, CNRS, Arts et Metiers Institute of Technology, Bordeaux INP, INRAE, I2M Bordeaux, F-33400 Talence, France
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7
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Kharatyan T, Gopireddy SR, Ogawa T, Kodama T, Nishimoto N, Osada S, Scherließ R, Urbanetz NA. Quantitative Analysis of Glassy State Relaxation and Ostwald Ripening during Annealing Using Freeze-Drying Microscopy. Pharmaceutics 2022; 14:pharmaceutics14061176. [PMID: 35745749 PMCID: PMC9231378 DOI: 10.3390/pharmaceutics14061176] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/27/2022] [Accepted: 05/27/2022] [Indexed: 02/06/2023] Open
Abstract
Supercooling during the freezing of pharmaceutical solutions often leads to suboptimal freeze-drying results, such as long primary drying times or a collapse in the cake structure. Thermal treatment of the frozen solution, known as annealing, can improve those issues by influencing properties such as the pore size and collapse temperature of the lyophilisate. In this study we aimed to show that annealing causes a rearrangement of water molecules between ice crystals, as well as between the freeze-concentrated amorphous matrix and the crystalline ice phase in a frozen binary aqueous solution. Ice crystal sizes, as well as volume fractions of the crystalline and amorphous phases of 10% (w/w) sucrose and trehalose solutions, were quantified after annealing using freeze-drying microscopy and image labelling. Depending on the annealing time and temperature, the amorphous phase was shown to decrease its volume due to the crystallisation of vitreous water (i.e., glassy state relaxation) while the crystalline phase was undergoing coarsening (i.e., Ostwald ripening). These results allow, for the first time, a quantitative comparison of the two phenomena. It was demonstrated that glassy state relaxation and Ostwald ripening, although occurring simultaneously, are distinct processes that follow different kinetics.
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Affiliation(s)
- Tigran Kharatyan
- Department of Pharmaceutics and Biopharmaceutics, Kiel University, 24118 Kiel, Germany; (T.K.); (R.S.)
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany;
| | - Srikanth R. Gopireddy
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany;
- Correspondence:
| | - Toru Ogawa
- Formulation Technology Research Laboratories, Daiichi Sankyo Co., Ltd., Hiratsuka 254-0014, Japan; (T.O.); (T.K.); (N.N.); (S.O.)
| | - Tatsuhiro Kodama
- Formulation Technology Research Laboratories, Daiichi Sankyo Co., Ltd., Hiratsuka 254-0014, Japan; (T.O.); (T.K.); (N.N.); (S.O.)
| | - Norihiro Nishimoto
- Formulation Technology Research Laboratories, Daiichi Sankyo Co., Ltd., Hiratsuka 254-0014, Japan; (T.O.); (T.K.); (N.N.); (S.O.)
| | - Sayaka Osada
- Formulation Technology Research Laboratories, Daiichi Sankyo Co., Ltd., Hiratsuka 254-0014, Japan; (T.O.); (T.K.); (N.N.); (S.O.)
| | - Regina Scherließ
- Department of Pharmaceutics and Biopharmaceutics, Kiel University, 24118 Kiel, Germany; (T.K.); (R.S.)
| | - Nora A. Urbanetz
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany;
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8
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Lundahl MLE, Fogli S, Colavita PE, Scanlan EM. Aggregation of protein therapeutics enhances their immunogenicity: causes and mitigation strategies. RSC Chem Biol 2021; 2:1004-1020. [PMID: 34458822 PMCID: PMC8341748 DOI: 10.1039/d1cb00067e] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/04/2021] [Indexed: 12/25/2022] Open
Abstract
Protein aggregation in biotherapeutics has been identified to increase immunogenicity, leading to immune-mediated adverse effects, such as severe allergic responses including anaphylaxis. The induction of anti-drug antibodies (ADAs) moreover enhances drug clearance rates, and can directly block therapeutic function. In this review, identified immune activation mechanisms triggered by protein aggregates are discussed, as well as physicochemical properties of aggregates, such as size and shape, which contribute to immunogenicity. Furthermore, factors which contribute to protein stability and aggregation are considered. Lastly, with these factors in mind, we encourage an innovative and multidisciplinary approach with regard to further research in the field, with the overall aim to avoid immunogenic aggregation in future drug development.
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Affiliation(s)
- Mimmi L E Lundahl
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin Dublin 2 Ireland
| | - Silvia Fogli
- Glycome Biopharma, Unit 4, Joyce House, Barrack Square, Ballincollig Co Cork P31 HW35 Ireland
| | - Paula E Colavita
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin Dublin 2 Ireland
| | - Eoin M Scanlan
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin Dublin 2 Ireland
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9
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Cho E, Mayhugh BM, Srinivasan JM, Sacha GA, Nail SL, Topp EM. Stability of antibody drug conjugate formulations evaluated using solid-state hydrogen-deuterium exchange mass spectrometry. J Pharm Sci 2021; 110:2379-2385. [PMID: 33711346 DOI: 10.1016/j.xphs.2021.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Antibody drug conjugates (ADCs) have been at the forefront in cancer therapy due to their target specificity. All the FDA approved ADCs are developed in lyophilized form to minimize instability associated with the linker that connects the cytotoxic drug and the antibody during shipping and storage. We present here solid-state hydrogen-deuterium exchange with mass spectrometric analysis (ssHDX-MS) as a tool to analyze protein structure and matrix interactions for formulations of an ADC with and without commonly used excipients. We compared results of the ssHDX-MS with accelerated stability results using size-exclusion chromatography and determined that the former technique was able to successfully identify the destabilizing effects of mannitol and polysorbate 80. In comparison, Fourier-transform infrared spectroscopy results were inconclusive. The agreement between ssHDX-MS and stressed stability studies supports the potential of ssHDX-MS as a method of predicting relative stability of different formulations.
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Affiliation(s)
- Eunbi Cho
- Department of Industrial and Physical Pharmacy, Purdue University, Robert E. Heine Pharmacy Building, 575 W Stadium Ave, West Lafayette, IN 47907, United States
| | | | | | - Gregory A Sacha
- Baxter BioPharma Solutions, Bloomington, IN 47403, United States
| | - Steven L Nail
- Baxter BioPharma Solutions, Bloomington, IN 47403, United States
| | - Elizabeth M Topp
- Department of Industrial and Physical Pharmacy, Purdue University, Robert E. Heine Pharmacy Building, 575 W Stadium Ave, West Lafayette, IN 47907, United States; National Institute for Bioprocessing Research and Training, Dublin 6, Ireland.
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10
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Recent Advances in Porous 3D Cellulose Aerogels for Tissue Engineering Applications: A Review. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4040152] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Current approaches in developing porous 3D scaffolds face various challenges, such as failure of mimicking extracellular matrix (ECM) native building blocks, non-sustainable scaffold fabrication techniques, and lack of functionality. Polysaccharides and proteins are sustainable, inexpensive, biodegradable, and biocompatible, with structural similarities to the ECM. As a result, 3D-structured cellulose (e.g., cellulose nanofibrils, nanocrystals and bacterial nanocellulose)-based aerogels with high porosity and interconnected pores are ideal materials for biomedical applications. Such 3D scaffolds can be prepared using a green, scalable, and cost-effective freeze-drying technique. The physicochemical, mechanical, and biological characteristics of the cellulose can be improved by incorporation of proteins and other polysaccharides. This review will focus on recent developments related to the cellulose-based 3D aerogels prepared by sustainable freeze-drying methods for tissue engineering applications. We will also provide an overview of the scaffold development criteria; parameters that influenced the aerogel production by freeze-drying; and in vitro and in vivo studies of the cellulose-based porous 3D aerogel scaffolds. These efforts could potentially help to expand the role of cellulose-based 3D scaffolds as next-generation biomaterials.
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11
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Shang WH, Yan JN, Du YN, Cui XF, Su SY, Han JR, Xu YS, Xue CF, Zhang TT, Wu HT, Zhu BW. Functional properties of gonad protein isolates from three species of sea urchin: a comparative study. J Food Sci 2020; 85:3679-3689. [PMID: 32990386 DOI: 10.1111/1750-3841.15464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 08/27/2020] [Accepted: 09/01/2020] [Indexed: 11/29/2022]
Abstract
Sea urchin Mesocentrotus nudus, Glyptocidaris crenularis, and Strongylocentrotus intermedius gonad protein isolates (mnGPIs, gcGPIs, and siGPIs) were extracted by isoelectric solubilization/precipitation (ISP) from the defatted gonads, and their functional properties were compared. Sodium dodecyl sulfate polyacrylamide gel electrophoresis results showed the similar protein pattern between each protein isolate and defatted gonad, indicating the high efficiency of ISP processing for protein recovery. Amino acid profileconfirmed that the mnGPIs and siGPIs could be potential sources of essential amino acid in nature. As regard to functional properties, mnGPIs showed higher water- and oil- holding capacities followed bysiGPIs and gcGPIs and all protein isolates presented great foaming property. As for emulsifying activity index (EAI), mnGPIs, gcGPIs, and siGPIs showed the minimum solubility and EAI at pH 5, 3, and 4, respectively, and behaved a pH-dependent manner. The gcGPIs revealed the highest EAI from pH 6 to 8 among the samples. In addition, circular dichroism showed increased content of β-sheet at the expense of α-helix and β-turn, suggesting the structure denaturation of the protein isolates. Indeed, no statistical difference was observed between secondary structure of mnGPIs and siGPIs. Moreover, ISP processing increased free sulfhydryl content of sea urchin protein isolates, but no difference was observed among the samples. Furthermore, siGPIs revealed the highest amount of total sulfhydryl and disulfide bonds, whereas both defatted gonads and protein isolates from G. crenularis presented the maximum surface hydrophobicity. These results suggest that gonad protein isolates from three species of sea urchin possess various functionalities and therefore can be potentially applied in food system. PRACTICAL APPLICATION: Sea urchin M. nudus, G. crenularis, and S. intermedius gonads are edible, whereas the functional properties of protein isolates from sea urchin gonad remain unknown. In this case, the extraction and comparison of three species of sea urchin gonad protein isolates will not only confirm functional properties but also screen food ingredients with suitable functions. In this study, functionalities of protein isolates derived from M. nudus, G. crenularis, and S. intermedius gonads would provide potential application in bakery food and meat products or as emulsifier candidates in food system.
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Affiliation(s)
- Wen-Hui Shang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P.R. China.,College of Food Science and Engineering, Hainan Tropical Ocean University, Sanya, 572022, P.R. China
| | - Jia-Nan Yan
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P.R. China
| | - Yi-Nan Du
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P.R. China
| | - Xiao-Fan Cui
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P.R. China
| | - Sheng-Yi Su
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P.R. China
| | - Jia-Run Han
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P.R. China
| | - Yun-Sheng Xu
- College of Food Science and Engineering, Hainan Tropical Ocean University, Sanya, 572022, P.R. China
| | - Chang-Feng Xue
- College of Food Science and Engineering, Hainan Tropical Ocean University, Sanya, 572022, P.R. China
| | - Tie-Tao Zhang
- College of Food Science and Engineering, Hainan Tropical Ocean University, Sanya, 572022, P.R. China
| | - Hai-Tao Wu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P.R. China.,National Engineering Research Center of Seafood, Dalian, 116034, P.R. China.,Collaborative Innovation Center of Seafood Deep Processing, Dalian, 116034, P.R. China
| | - Bei-Wei Zhu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P.R. China.,National Engineering Research Center of Seafood, Dalian, 116034, P.R. China.,Collaborative Innovation Center of Seafood Deep Processing, Dalian, 116034, P.R. China
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12
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Nunes R, Pereira BD, Cerqueira MA, Silva P, Pastrana LM, Vicente AA, Martins JT, Bourbon AI. Lactoferrin-based nanoemulsions to improve the physical and chemical stability of omega-3 fatty acids. Food Funct 2020; 11:1966-1981. [DOI: 10.1039/c9fo02307k] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Omega-3 (ω-3) polyunsaturated fatty acids are highly susceptible to oxidation and have an intense odour and poor water solubility, which make their direct applications in foods extremely difficult.
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Affiliation(s)
- Rafaela Nunes
- Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
| | - Beatriz D'Avó Pereira
- Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
- International Iberian Nanotechnology Laboratory
| | | | - Pedro Silva
- Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
| | | | | | - Joana T. Martins
- Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
| | - Ana I. Bourbon
- International Iberian Nanotechnology Laboratory
- Braga
- Portugal
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Izutsu KI. Applications of Freezing and Freeze-Drying in Pharmaceutical Formulations. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1081:371-383. [DOI: 10.1007/978-981-13-1244-1_20] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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