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Li B, Ustyugova IV, Szymkowicz L, Zhu S, Ming M, Fung KYY, Cortés G, James DA, Hrynyk M, Rahman N, Brookes RH, Ausar SF. Formulation development of a stable influenza recombinant neuraminidase vaccine candidate. Hum Vaccin Immunother 2024; 20:2304393. [PMID: 38497413 PMCID: PMC10950269 DOI: 10.1080/21645515.2024.2304393] [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: 10/25/2023] [Accepted: 01/09/2024] [Indexed: 03/19/2024] Open
Abstract
Current influenza vaccines could be augmented by including recombinant neuraminidase (rNA) protein antigen to broaden protective immunity and improve efficacy. Toward this goal, we investigated formulation conditions to optimize rNA physicochemical stability. When rNA in sodium phosphate saline buffer (NaPBS) was frozen and thawed (F/T), the tetrameric structure transitioned from a "closed" to an "open" conformation, negatively impacting functional activity. Hydrogen deuterium exchange experiments identified differences in anchorage binding sites at the base of the open tetramer, offering a structural mechanistic explanation for the change in conformation and decreased functional activity. Change to the open configuration was triggered by the combined stresses of acidic pH and F/T. The desired closed conformation was preserved in a potassium phosphate buffer (KP), minimizing pH drop upon freezing and including 10% sucrose to control F/T stress. Stability was further evaluated in thermal stress studies where changes in conformation were readily detected by ELISA and size exclusion chromatography (SEC). Both tests were suitable indicators of stability and antigenicity and considered potential critical quality attributes (pCQAs). To understand longer-term stability, the pCQA profiles from thermally stressed rNA at 6 months were modeled to predict stability of at least 24-months at 5°C storage. In summary, a desired rNA closed tetramer was maintained by formulation selection and monitoring of pCQAs to produce a stable rNA vaccine candidate. The study highlights the importance of understanding and controlling vaccine protein structural and functional integrity.
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Affiliation(s)
- Bing Li
- Sanofi Global Vaccine Drug Product Development, Toronto, ON, Canada
| | | | | | | | - Marin Ming
- Sanofi Analytical Sciences, Toronto, ON, Canada
| | - Karen Y. Y. Fung
- Sanofi Global Vaccine Drug Product Development, Toronto, ON, Canada
| | - Guadalupe Cortés
- Sanofi mRNA & Translational Medicine COVID Franchise, Global Clinical Development, Waltham, MA, USA
| | - D. Andrew James
- Sanofi External Research and Development, Toronto, ON, Canada
| | | | - Nausheen Rahman
- Sanofi Global Vaccine Drug Product Development, Toronto, ON, Canada
| | - Roger H. Brookes
- Sanofi Global Vaccine Drug Product Development, Toronto, ON, Canada
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2
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Ito T, Tamashiro S, Okuda H, Yamazoe E, Tahara K. Cryomilled electrospun nanofiber mats containing d-mannitol exhibit suitable for aerosol delivery of proteins. Int J Pharm 2024; 661:124425. [PMID: 38971509 DOI: 10.1016/j.ijpharm.2024.124425] [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: 02/01/2024] [Revised: 06/15/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024]
Abstract
Dry powder inhalers (DPIs) are the first choice for inhalation drug development. However, some conventional DPI formulation processes require heating, which may damage high molecular weight drugs such as proteins and nucleic acids. In this study, we propose a novel DPI preparation process that avoids the use of heat. Dry powders were prepared by cryomilling nanofiber mats composed of polyvinyl alcohol, D(-)-mannitol (Man), and α-chymotrypsin (α-Chy) as the model drug using the electrospinning method. The addition of Man conferred high dispersibility and excellent in vitro aerosol performance to the nanofiber mat powder in a very short milling time (less than 0.5 min) as assessed using the Andersen cascade impactor. Powders were classified according to the degree of friability, and among these, nanofiber mats containing 15 % Man and milled for 0.25 min exhibited the highest aerosol performance. Nanofiber mats containing Man milled for less than 0.5 min also exhibited greater α-Chy enzymatic activity than a nebulized α-Chy solution. Furthermore, single inhalation induced no significant lung tissue damage as evidenced by lactate dehydrogenase activity assays of mouse bronchoalveolar lavage fluid. This novel DPI formulation process may facilitate the safe and efficient inhalational delivery of therapeutic proteins.
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Affiliation(s)
- Takaaki Ito
- Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu 501-1196, Japan
| | - Shintaro Tamashiro
- Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu 501-1196, Japan
| | - Hiroki Okuda
- Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu 501-1196, Japan
| | - Eriko Yamazoe
- Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu 501-1196, Japan
| | - Kohei Tahara
- Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu 501-1196, Japan.
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3
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Som M, Gikanga B, Kanapuram V, Yadav S. Drug product Formulation and Fill/Finish Manufacturing Process Considerations for AAV-Based Genomic Medicines. J Pharm Sci 2024; 113:1711-1725. [PMID: 38570073 DOI: 10.1016/j.xphs.2024.03.024] [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: 01/02/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/05/2024]
Abstract
Adeno-associated viruses (AAVs) have become the delivery medium of choice for a variety of genomic medicine applications i.e., gene therapy, gene editing/regulation, and ex-vivo cell therapy. AAVs are protein-DNA complexes which have unique stability characteristics that are susceptible to various stress exposure conditions commonly seen in the drug product (DP) life cycle. This review takes a comprehensive look at AAV DP formulation and process development considerations that could impact critical quality attributes (CQAs) during manufacturing, packaging, shipping, and clinical use. Additional aspects related to AAV development reviewed herein are: (1) Different AAV serotypes with unique protein sequences and charge characteristics potentially leading to discrete stability profiles; (2) Manufacturing process challenges and optimization efforts to improve yield, recovery and purity especially during early development activities; and (3) Defining and identifying CQAs with analytical methods which are constantly evolving and present unique characterization challenges for AAV-based products.
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Affiliation(s)
- Madhura Som
- Sangamo Therapeutics, 7000 Marina Boulevard, Brisbane, CA 94005, United States.
| | - Benson Gikanga
- Sangamo Therapeutics, 7000 Marina Boulevard, Brisbane, CA 94005, United States
| | - Varna Kanapuram
- Sangamo Therapeutics, 7000 Marina Boulevard, Brisbane, CA 94005, United States
| | - Sandeep Yadav
- Sangamo Therapeutics, 7000 Marina Boulevard, Brisbane, CA 94005, United States.
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Ai T, Wan J, Yu X, Liu J, Yin C, Yang L, Liu H, Qin R. The Non-Denatured Processing of Brasenia schreberi Mucilage-Characteristics of Hydrodynamic Properties and the Effect on In Vivo Functions. Foods 2024; 13:1824. [PMID: 38928766 PMCID: PMC11203210 DOI: 10.3390/foods13121824] [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: 04/22/2024] [Revised: 05/29/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Food non-denatured processes, such as freeze-drying and grinding, are commonly applied to raw materials with good bioactive functions. Although the functional components are maintained, whether structural and physical changes impact the in vivo function is often ignored in practical situations. Brasenia schreberi mucilage (BSM) has a significant alleviation effect on DSS-induced colitis. This work focused on the influence of non-denatured manufacture on the colonic benefits of BSM-based products. First, three forms of products including fresh mucilage (FM), freeze-dried products (FS), and freeze-dried powder (FP) were prepared. Then, their in vitro physiochemical properties were compared, analyzing their influence on the gut inflammation degree, microbial composition, and SCFA production in mice. The results suggested that the water retention rate of FS and FP was decreased to 34.59 ± 3.85%, and 9.93 ± 1.76%. The viscosity of FM, FS, and FP was 20.14 Pa∙s, 4.92 Pa∙s, and 0.41 Pa∙s, respectively. The freeze-drying and grinding process also damaged the lamellar microstructure of BSM. Then, animal tests showed that colitis mice intervened with FM, FS, and FP had disease activity scores of 2.03, 3.95, and 4.62. Meanwhile, FM notably changed the gut microbial composition and significantly increased propionate and butyrate levels. It seemed that the distinct colitis alleviation efficacy of BSM-based products is attributed to different hydrodynamic properties in the gut. FM had relatively higher viscosity and correspondingly high nutritional density in the gut lumen, which stimulates Firmicutes growth and promotes butyrate production, and thereby exhibited the best efficiency on protecting from colitis.
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Affiliation(s)
- Tingyang Ai
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Jiawei Wan
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Xiujuan Yu
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Jiao Liu
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Cong Yin
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Lindong Yang
- Conservation and Comprehensive Utilization Engineering Center of Biological Resources in Southern Minority Areas, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China;
| | - Hong Liu
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
| | - Rui Qin
- Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, College of Life Sciences, South-Central MinZu University, Wuhan 430074, China; (T.A.); (J.W.); (X.Y.); (J.L.); (C.Y.); (H.L.)
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Huang X, Jiang J, Shen J, Xu Z, Gu F, Pei J, Zhang L, Tang P, Yin P. The Influences of Cryopreservation Methods on RNA, Protein, Microstructure and Cell Viability of Skeletal Muscle Tissue. Biopreserv Biobank 2024; 22:225-234. [PMID: 37594856 DOI: 10.1089/bio.2023.0005] [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] [Indexed: 08/20/2023] Open
Abstract
Background: Different experiments require different sample storage methods. The commonly used preservation methods in biobank practice cannot fully meet the multifarious requirements of experimental techniques. Programmable controlled slow freezing (PCSF) can maintain the viability of tissue. In this study, we hypothesized that PCSF-preserved samples have potential advantages in matching subsequent experiments compared with existing methods. Methods: We compared the differences on skeletal muscle tissue RNA integrity, protein integrity, microstructure integrity, and cell viability between four existing cryopreservation methods: liquid nitrogen (LN2) snap-freezing, LN2-cooled isopentane snap-freezing, RNAlater®-based freezing, and PCSF. RNA integrity was evaluated using agarose gel electrophoresis and RNA integrity number. Freezing-related microstructural damage in the muscle tissue was evaluated using ice crystal diameter and muscle fiber cross-sectional area. Protein integrity was evaluated using immunofluorescence staining. Cell viability was evaluated using trypan blue staining after primary muscle cell isolation. Results: PCSF preserved RNA integrity better than LN2 and isopentane, with a statistically significant difference. RNAlater preserved RNA integrity best. PCSF best controlled ice crystal size in myofibers, with a significant difference compared with LN2. The PCSF method best preserved the integrity of protein epitopes according to the mean fluorescence intensity results, with a significant difference. Cell viability was best preserved in the PCSF method compared with the other three methods, with a significant difference. Conclusion: PCSF protected the RNA integrity, microstructural integrity, protein integrity, and cell viability of skeletal muscle tissue. The application of PCSF in biobank practice is recommended as a multi-experiment-compatible cryopreservation method.
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Affiliation(s)
- Xiang Huang
- Medical School of Chinese PLA, Chinese PLA General Hospital, Beijing, People's Republic of China
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, People's Republic of China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, People's Republic of China
| | - Jingjing Jiang
- Medical Innovation Research Division of Chinese PLA General Hospital, Clinical Biobank Center, Beijing, People's Republic of China
| | - Junmin Shen
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, People's Republic of China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, People's Republic of China
- School of Medicine, Nankai University, Tianjin, People's Republic of China
| | - Ziying Xu
- Department of Bacteriology, Capital Institute of Pediatrics, Beijing, People's Republic of China
| | - Fangyan Gu
- Medical Innovation Research Division of Chinese PLA General Hospital, Clinical Biobank Center, Beijing, People's Republic of China
| | - Jinlian Pei
- Medical Innovation Research Division of Chinese PLA General Hospital, Clinical Biobank Center, Beijing, People's Republic of China
| | - Licheng Zhang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, People's Republic of China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, People's Republic of China
| | - Peifu Tang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, People's Republic of China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, People's Republic of China
| | - Pengbin Yin
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, People's Republic of China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, People's Republic of China
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6
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Pisano R, Semeraro J, Artusio F, Barresi AA. Insights into Thermal Interactions in Frozen Pharmaceutical Vials: Effects on Ice Nucleation Times and Inhibition. Pharm Res 2024; 41:1285-1297. [PMID: 38769275 DOI: 10.1007/s11095-024-03713-2] [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: 11/21/2023] [Accepted: 05/05/2024] [Indexed: 05/22/2024]
Abstract
PURPOSE This study investigates the thermal interactions between adjacent vials during freezing and assesses their impact on nucleation times. METHODS Various loading configurations were analyzed to understand their impact on nucleation times. Configurations involving direct contact between vials and freeze-dryer shelves were studied, along with setups using empty vials between filled ones. Additionally, non-conventional loading configurations and glycol-filled vials were tested. The analysis includes 2R and 20R vials, which are commonly utilized in the freezing and lyophilization of drug products, along with two different fill depths, 1 and 1.4 cm. RESULTS The investigation revealed that configurations with direct contact between vials and freeze-dryer shelves led to substantial thermal interactions, resulting in delayed nucleation in adjacent vials and affecting the temperature at which nucleation takes place in a complex way. In another setup, empty vials were placed between filled vials, significantly reducing thermal interactions. Further tests with non-conventional configurations and glycol-filled vials confirmed the presence of thermal interactions with a minimal inhibitory effect. CONCLUSIONS These findings carry significant implications for the pharmaceutical industry, highlighting the role of thermal interactions among vials during freezing and their impact on the temperature at which ice nucleation occurs.
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Affiliation(s)
- Roberto Pisano
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, IT10129, Turin, Italy.
| | - Jessica Semeraro
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, IT10129, Turin, Italy
| | - Fiora Artusio
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, IT10129, Turin, Italy
| | - Antonello A Barresi
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, IT10129, Turin, Italy
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7
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Du Y, Li J, Suryanarayanan R, Su Y. Probing Chemical Equilibrium in Frozen Sodium Phosphate Buffer Solution by 31P Solid-State NMR. J Phys Chem Lett 2024; 15:5714-5720. [PMID: 38768559 DOI: 10.1021/acs.jpclett.4c00877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Phosphate buffers are crucial for cryopreservative stability in pharmaceuticals, food processing, biomedical sciences, and biology. However, their freeze concentrates lack quantitative characterization, especially regarding the physicochemical properties of phosphate salt species in equilibrium at subzero temperatures. This study employs 31P solid-state NMR (ssNMR) to analyze frozen sodium phosphate (NaP) solutions, providing insights into phase composition, ionic strength, and pH. For the first time, we have directly quantified phosphate species in frozen NaP buffer, including crystallized disodium phosphate dodecahydrate (Na2HPO4·12H2O) content and the concentrations of H2PO4- and HPO42- in the freeze concentrate. This enabled the calculation of the pH as well as the ionic strength in the freeze concentrate. Trehalose effectively mitigated pH shifts in buffer solutions by preventing the selective crystallization of salt, a spectroscopic phenomenon not previously observed experimentally.
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Affiliation(s)
- Yong Du
- Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Jinghan Li
- Department of Pharmaceutics College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Raj Suryanarayanan
- Department of Pharmaceutics College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Yongchao Su
- Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
- Pharmaceutical Sciences and Clinical Supply, Merck & Co., Inc., West Point, Pennsylvania 19486, United States
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Peláez SS, Mahler HC, Vila PR, Huwyler J, Allmendinger A. Characterization of Freezing Processes in Drug Substance Bottles by Ice Core Sampling. AAPS PharmSciTech 2024; 25:102. [PMID: 38714592 DOI: 10.1208/s12249-024-02818-6] [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: 02/15/2024] [Accepted: 04/25/2024] [Indexed: 05/10/2024] Open
Abstract
Freezing of biological drug substance (DS) is a critical unit operation that may impact product quality, potentially leading to protein aggregation and sub-visible particle formation. Cryo-concentration has been identified as a critical parameter to impact protein stability during freezing and should therefore be minimized. The macroscopic cryo-concentration, in the following only referred to as cryo-concentration, is majorly influenced by the freezing rate, which is in turn impacted by product independent process parameters such as the DS container, its size and fill level, and the freezing equipment. (At-scale) process characterization studies are crucial to understand and optimize freezing processes. However, evaluating cryo-concentration requires sampling of the frozen bulk, which is typically performed by cutting the ice block into pieces for subsequent analysis. Also, the large amount of product requirement for these studies is a major limitation. In this study, we report the development of a simple methodology for experimental characterization of frozen DS in bottles at relevant scale using a surrogate solution. The novel ice core sampling technique identifies the axial ice core in the center to be indicative for cryo-concentration, which was measured by osmolality, and concentrations of histidine and polysorbate 80 (PS80), whereas osmolality revealed to be a sensitive read-out. Finally, we exemplify the suitability of the method to study cryo-concentration in DS bottles by comparing cryo-concentrations from different freezing protocols (-80°C vs -40°C). Prolonged stress times during freezing correlated to a higher extent of cryo-concentration quantified by osmolality in the axial center of a 2 L DS bottle.
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Affiliation(s)
- Sarah S Peláez
- ten23 health AG, Mattenstrasse 22, 4058, Basel, Switzerland
- Institute of Pharmaceutical Technology, Goethe University Frankfurt, Max-Von-Laue-Strasse 9, 60438, Frankfurt am Main, Germany
| | - Hanns-Christian Mahler
- ten23 health AG, Mattenstrasse 22, 4058, Basel, Switzerland
- Institute of Pharmaceutical Technology, Goethe University Frankfurt, Max-Von-Laue-Strasse 9, 60438, Frankfurt am Main, Germany
- Department Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | | | - Jörg Huwyler
- Department Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | - Andrea Allmendinger
- ten23 health AG, Mattenstrasse 22, 4058, Basel, Switzerland.
- Institute of Pharmaceutical Sciences, Department of Pharmaceutics, University of Freiburg, Sonnenstr. 5, 79104, Freiburg, Germany.
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Arora S, Dash SK, Dhawan D, Sahoo PK, Jindal A, Gugulothu D. Freeze-drying revolution: unleashing the potential of lyophilization in advancing drug delivery systems. Drug Deliv Transl Res 2024; 14:1111-1153. [PMID: 37985541 DOI: 10.1007/s13346-023-01477-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2023] [Indexed: 11/22/2023]
Abstract
Lyophilization also known as freeze-drying is a technique that has been employed to enhance the long-term durability of nanoparticles (NPs) that are utilized for drug delivery applications. This method is used to prevent their instability in suspension. However, this dehydration process can cause stress to the NPs, which can be alleviated by the incorporation of excipients like cryoprotectants and lyoprotectants. Nevertheless, the freeze-drying of NPs is often based on empirical principles without considering the physical-chemical properties of the formulations and the engineering principles of freeze-drying. For this reason, it is crucial to optimize the formulations and the freeze-drying cycle to obtain a good lyophilizate and ensure the preservation of NPs stability. Moreover, proper characterization of the lyophilizate and NPs is of utmost importance in achieving these goals. This review aims to update the recent advancements, including innovative formulations and novel approaches, contributing to the progress in this field, to obtain the maximum stability of formulations. Additionally, we critically analyze the limitations of lyophilization and discuss potential future directions. It addresses the challenges faced by researchers and suggests avenues for further research to overcome these limitations. In conclusion, this review is a valuable contribution to the understanding of the parameters involved in the freeze-drying of NPs. It will definitely aid future studies in obtaining lyophilized NPs with good quality and enhanced drug delivery and therapeutic benefits.
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Affiliation(s)
- Sanchit Arora
- Department of Pharmaceutics, Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR), Delhi Pharmaceutical Sciences and Research University (DPSRU), New Delhi, 110017, India
| | - Sanat Kumar Dash
- Department of Pharmacy, Birla Institute of Technology and Science (BITS PILANI), Pilani, Rajasthan, 333031, India
| | - Dimple Dhawan
- Department of Pharmaceutics, Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR), Delhi Pharmaceutical Sciences and Research University (DPSRU), New Delhi, 110017, India
| | - Prabhat Kumar Sahoo
- Department of Pharmaceutics, Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR), Delhi Pharmaceutical Sciences and Research University (DPSRU), New Delhi, 110017, India
| | - Anil Jindal
- Department of Pharmacy, Birla Institute of Technology and Science (BITS PILANI), Pilani, Rajasthan, 333031, India
| | - Dalapathi Gugulothu
- Department of Pharmaceutics, Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR), Delhi Pharmaceutical Sciences and Research University (DPSRU), New Delhi, 110017, India.
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Barceló-Chong CM, Filipe V, Nakach M, Ré MI. How spray drying processing and solution composition can affect the mAbs stability in reconstituted solutions for subcutaneous injections. Part I: Contribution of processing stresses against composition. Int J Pharm 2024; 655:123925. [PMID: 38518870 DOI: 10.1016/j.ijpharm.2024.123925] [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: 09/04/2023] [Revised: 01/25/2024] [Accepted: 02/18/2024] [Indexed: 03/24/2024]
Abstract
Spray drying is increasingly being applied to process biopharmaceuticals, particularly monoclonal antibodies (mAbs). However, due to their protein nature, mAbs are susceptible to degradation when subjected to various stresses during a drying process. Despite extensive research in this domain, identifying the appropriate formulation composition and spray drying conditions remains a complex challenge, requiring further studies to enhance the understanding on how process and formulation parameters impact mAb stability in reconstituted solutions. This research aims to explore spray drying as technique for producing pharmaceutical mAbs-based powders intended for reconstitution and subcutaneous injection. In the initial phase of this study, using a model mAb (mAb-A), the influence of dissociated and coupled process stresses on protein stability after solution reconstitution was investigated. The findings revealed a detrimental interplay of mechanical, interfacial, and thermal/dehydration stresses on mAb-A stability, notably characterized by an increase in protein aggregation. Subsequently, in a second phase, the study delved into the impact of spray drying processing conditions, the level of excipients, and protein concentration on mAb-A aggregation in reconstituted solutions. The obtained results highlighted the critical role of formulation composition as a parameter deserving further study, specifically concerning the selection of type and concentration of stabilizers to be added in the liquid mAb-A solution to be dried.
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Affiliation(s)
| | - Vasco Filipe
- Sanofi R&D, 1, Impasse des Ateliers, 94403 Vitry sur Seine, France
| | - Mostafa Nakach
- Sanofi R&D, 1, Impasse des Ateliers, 94403 Vitry sur Seine, France
| | - Maria Inês Ré
- IMT Mines Albi, RAPSODEE UMR CNRS 5302, Albi, France
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11
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Du Y, Su Y. Quantification of Residual Water in Pharmaceutical Frozen Solutions Via 1H Solid-State NMR. J Pharm Sci 2024:S0022-3549(24)00144-8. [PMID: 38643897 DOI: 10.1016/j.xphs.2024.04.013] [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: 10/26/2023] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 04/23/2024]
Abstract
Freezing is essential for the stability of biological drug substances and products, particularly in frozen solution formulations and during the primary drying of lyophilized preparations. However, the unfrozen segment within the frozen matrix can alter solute concentration, ionic strength, and stabilizer crystallization, posing risks of increased biophysical instability and faster chemical degradation. While quantifying the unfrozen water content is important for designing stable biopharmaceuticals, there is a lack of analytical techniques for in situ quantitative measurements. In this study, we introduce a 1H magic angle spinning NMR technique to identify the freezing point (Tice) and quantify mobile water content in frozen biologics, applying this method to analyze the freezing of a commercial high-concentration drug product, Dupixent®. Our results demonstrate that water freezing is influenced by buffer salt properties and formulation composition, including the presence of sugar cryoprotectants and protein concentration. Additionally, the 1H chemical shift can probe pH in the unfrozen phase, potentially predicting the microenvironmental acidity in the frozen state. Our proposed methodology provides fresh insights into the analysis of freeze-concentrated solutions, enhancing our understanding of the stability of frozen and lyophilized biopharmaceuticals.
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Affiliation(s)
- Yong Du
- Analytical Research and Development, Merck & Co. Inc., Rahway, NJ 07065, USA
| | - Yongchao Su
- Analytical Research and Development, Merck & Co. Inc., Rahway, NJ 07065, USA; Pharmaceutical Sciences and Clinical Supply, Merck & Co. Inc., West Point, PA 19486, USA.
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12
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Rottmayer K, Schwarze M, Jassoy C, Hoffmann R, Loeffler-Wirth H, Lehmann C. Potential of a Bead-Based Multiplex Assay for SARS-CoV-2 Antibody Detection. BIOLOGY 2024; 13:273. [PMID: 38666885 PMCID: PMC11047883 DOI: 10.3390/biology13040273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024]
Abstract
Serological assays for SARS-CoV-2 play a pivotal role in the definition of whether patients are infected, the understanding of viral epidemiology, the screening of convalescent sera for therapeutic and prophylactic purposes, and in obtaining a better understanding of the immune response towards the virus. The aim of this study was to investigate the performance of a bead-based multiplex assay. This assay allowed for the simultaneous testing of IgG antibodies against SARS-CoV-2 spike, S1, S2, RBD, and nucleocapsid moieties and S1 of seasonal coronaviruses hCoV-22E, hCoV-HKU1, hCoV-NL63, and hCoV-OC43, as well as MERS and SARS-CoV. We compared the bead-based multiplex assay with commercial ELISA tests. We tested the sera of 27 SARS-CoV-2 PCR-positive individuals who were previously tested with different ELISA assays. Additionally, we investigated the reproducibility of the results by means of multiple testing of the same sera. Finally, the results were correlated with neutralising assays. In summary, the concordance of the qualitative results ranged between 78% and 96% depending on the ELISA assay and the specific antigen. Repeated freezing-thawing cycles resulted in reduced mean fluorescence intensity, while the storage period had no influence in this respect. In our test cohort, we detected up to 36% of sera positive for the development of neutralising antibodies, which is in concordance with the bead-based multiplex and IgG ELISA.
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Affiliation(s)
- Karla Rottmayer
- Laboratory for Transplantation Immunology, University Hospital Leipzig, Universität Leipzig, Johannisallee 32, 04103 Leipzig, Germany
| | - Mandy Schwarze
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Universität Leipzig, 04103 Leipzig, Germany; (M.S.)
- Center for Biotechnology and Biomedicine, Universität Leipzig, 04103 Leipzig, Germany
| | - Christian Jassoy
- Institute for Medical Microbiology and Virology, Leipzig University Hospital and Medical Faculty, University of Leipzig, Johannisallee 30, 04103 Leipzig, Germany;
| | - Ralf Hoffmann
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Universität Leipzig, 04103 Leipzig, Germany; (M.S.)
- Center for Biotechnology and Biomedicine, Universität Leipzig, 04103 Leipzig, Germany
| | - Henry Loeffler-Wirth
- Interdisciplinary Centre for Bioinformatics, IZBI, Leipzig University, Haertelstr. 16-18, 04107 Leipzig, Germany;
| | - Claudia Lehmann
- Laboratory for Transplantation Immunology, University Hospital Leipzig, Universität Leipzig, Johannisallee 32, 04103 Leipzig, Germany
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Chandrababu KB, Kannan A, Savage JR, Stadmiller S, Ryle AE, Cheung C, Kelley RF, Maa YF, Saggu M, Bitterfield DL. Stability Comparison Between Microglassification and Lyophilization Using a Monoclonal Antibody. J Pharm Sci 2024; 113:1054-1060. [PMID: 37863428 DOI: 10.1016/j.xphs.2023.10.021] [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: 06/15/2023] [Revised: 10/13/2023] [Accepted: 10/13/2023] [Indexed: 10/22/2023]
Abstract
Producing solid-state formulations of biologics remains a daunting task despite the prevalent use of lyophilization and spray drying technologies in the biopharmaceutical industry. The challenges include protein stability (temperature stresses), high capital costs, particle design/controllability, shortened processing times and manufacturing considerations (scalability, yield improvements, aseptic operation, etc.). Thus, scientists/engineers are constantly working to improve existing methodologies and exploring novel dehydration/powder-forming technologies. Microglassification™ is a dehydration technology that uses solvent extraction to rapidly dehydrate protein formulations at ambient temperatures, eliminating the temperature stress experienced by biologics in traditional lyophilization and spray drying methods. The process results in microparticles that are spherical, dense, and chemically stable. In this study, we compared the molecular stability of a monoclonal antibody formulation processed by lyophilization to the same formulation processed using Microglassification™. Both powders were placed on stability for 3 months at 40 °C and 6 months at 25 °C. Both dehydration methods showed similar chemical stability, including percent monomer, charge variants, and antigen binding. These results show that Microglassification™ is viable for the production of stable solid-state monoclonal antibody formulations.
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Affiliation(s)
| | - Aadithya Kannan
- Pharmaceutical Development, Genentech Inc., South San Francisco, CA 94080, United States
| | - John R Savage
- Lindy Biosciences, 627 Davis Dr. #400 Morrisville, North Carolina 27560, United States
| | - Samantha Stadmiller
- Lindy Biosciences, 627 Davis Dr. #400 Morrisville, North Carolina 27560, United States
| | - Adam E Ryle
- Lindy Biosciences, 627 Davis Dr. #400 Morrisville, North Carolina 27560, United States
| | - Chloe Cheung
- Pharmaceutical Development, Genentech Inc., South San Francisco, CA 94080, United States
| | - Robert F Kelley
- Pharmaceutical Development, Genentech Inc., South San Francisco, CA 94080, United States
| | - Yuh-Fun Maa
- Pharmaceutical Development, Genentech Inc., South San Francisco, CA 94080, United States
| | - Miguel Saggu
- Pharmaceutical Development, Genentech Inc., South San Francisco, CA 94080, United States.
| | - Deborah L Bitterfield
- Lindy Biosciences, 627 Davis Dr. #400 Morrisville, North Carolina 27560, United States.
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14
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Deck LT, Shardt N, El-Bakouri I, Isenrich FN, Marcolli C, deMello AJ, Mazzotti M. Monitoring Aqueous Sucrose Solutions Using Droplet Microfluidics: Ice Nucleation, Growth, Glass Transition, and Melting. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6304-6316. [PMID: 38494636 DOI: 10.1021/acs.langmuir.3c03798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Freezing and freeze-drying processes are commonly used to extend the shelf life of drug products and to ensure their safety and efficacy upon use. When designing a freezing process, it is beneficial to characterize multiple physicochemical properties of the formulation, such as nucleation rate, crystal growth rate, temperature and concentration of the maximally freeze-concentrated solution, and melting point. Differential scanning calorimetry has predominantly been used in this context but does have practical limitations and is unable to quantify the kinetics of crystal growth and nucleation. In this work, we introduce a microfluidic technique capable of quantifying the properties of interest and use it to investigate aqueous sucrose solutions of varying concentration. Three freeze-thaw cycles were performed on droplets with 75-μm diameters at cooling and warming rates of 1 °C/min. During each cycle, the visual appearance of the droplets was optically monitored as they experienced nucleation, crystal growth, formation of the maximally freeze-concentrated solution, and melting. Nucleation and crystal growth manifested as increases in droplet brightness during the cooling phase. Heating was associated with a further increase as the temperature associated with the maximally freeze-concentrated solution was approached. Heating beyond the melting point corresponded to a decrease in brightness. Comparison with the literature confirmed the accuracy of the new technique while offering new visual data on the maximally freeze-concentrated solution. Thus, the microfluidic technique presented here may serve as a complement to differential scanning calorimetry in the context of freezing and freeze-drying. In the future, it could be applied to a plethora of mixtures that undergo such processing, whether in pharmaceutics, food production, or beyond.
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Affiliation(s)
- Leif-Thore Deck
- Institute of Energy and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
| | - Nadia Shardt
- Institute for Atmospheric and Climate Science, ETH Zurich, Zurich 8092, Switzerland
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
| | - Imad El-Bakouri
- Institute of Energy and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
| | - Florin N Isenrich
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich 8092, Switzerland
| | - Claudia Marcolli
- Institute for Atmospheric and Climate Science, ETH Zurich, Zurich 8092, Switzerland
| | - Andrew J deMello
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich 8092, Switzerland
| | - Marco Mazzotti
- Institute of Energy and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
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15
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Alfaro-Palma J, Johnston WA, Behrendorff J, Cui Z, Moradi SV, Alexandrov K. Development of Lyophilized Eukaryotic Cell-Free Protein Expression System Based on Leishmania tarentolae. ACS Synth Biol 2024; 13:449-456. [PMID: 38268082 DOI: 10.1021/acssynbio.3c00428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Eukaryotic cell-free protein expression systems enable rapid production of recombinant multidomain proteins in their functional form. A cell-free system based on the rapidly growing protozoan Leishmania tarentolae (LTE) has been extensively used for protein engineering and analysis of protein interaction networks. However, like other eukaryotic cell-free systems, LTE deteriorates at ambient temperatures and requires deep freezing for transport and storage. In this study, we report the development of a lyophilized version of LTE. Use of lyoprotectants such as poly(ethylene glycol) and trehalose during the drying process allows retention of 76% of protein expression activity versus nonlyophilized controls. Lyophilized LTE is capable of withstanding storage at room temperature for over 2 weeks. We demonstrated that upon reconstitution the lyophilized LTE could be used for in vitro expression of active enzymes, analysis of protein-protein interactions by AlphaLISA assay, and functional analysis of protein biosensors. Development of lyophilized LTE lowers the barriers to its distribution and opens the door to its application in remote areas.
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Affiliation(s)
- Juan Alfaro-Palma
- ARC Centre of Excellence in Synthetic Biology, Centre for Agriculture and the Bioeconomy, School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Wayne A Johnston
- ARC Centre of Excellence in Synthetic Biology, Centre for Agriculture and the Bioeconomy, School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - James Behrendorff
- ARC Centre of Excellence in Synthetic Biology, Centre for Agriculture and the Bioeconomy, School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD 4001, Australia
- CSIRO Future Science Platform in Synthetic Biology, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Black Mountain, ACT 2601, Australia
| | - Zhenling Cui
- ARC Centre of Excellence in Synthetic Biology, Centre for Agriculture and the Bioeconomy, School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Shayli Varasteh Moradi
- Protein Expression Facility, AIBN Building, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Kirill Alexandrov
- ARC Centre of Excellence in Synthetic Biology, Centre for Agriculture and the Bioeconomy, School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD 4001, Australia
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16
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Veselý L, Závacká K, Štůsek R, Olbert M, Neděla V, Shalaev E, Heger D. Impact of secondary ice in a frozen NaCl freeze-concentrated solution on the extent of methylene blue aggregation. Int J Pharm 2024; 650:123691. [PMID: 38072147 DOI: 10.1016/j.ijpharm.2023.123691] [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: 11/04/2023] [Revised: 12/07/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
Freezing and lyophilization have been utilized for decades to stabilize pharmaceutical and food products. Freezing a solution that contains dissolved salt and/or organic matter produces pure primary ice crystal grains separated by freeze-concentrated solutions (FCS). The microscopic size of the primary ice crystals depends on the cooling conditions and the concentration of the solutes. It is generally accepted that primary ice crystals size influences the rate of sublimation and also can impact physico-chemical behaviour of the species in the FCS. This article, however, presents a case where the secondary ice formed inside the FCS plays a critical role. We microscoped the structures of ice-cast FCS with an environmental scanning electron microscope and applied the aggregation-sensitive spectroscopic probe methylene blue to determine how the microstructure affects the molecular arrangement. We show that slow cooling at -50 °C produces large salt crystals with a small specific surface, resulting in a high degree of molecular aggregation within the FCS. In contrast, fast liquid nitrogen cooling yields an ultrafine structure of salt crystals having a large specific surface area and, therefore, inducing smaller aggregation. The study highlights a critical role of secondary ice in solute aggregation and introduces methylene blue as a molecular probe to investigate freezing behaviour of aqueous systems with crystalline solute.
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Affiliation(s)
- Lukáš Veselý
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Kamila Závacká
- Environmental Electron Microscopy Group, Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czech Republic
| | - Radim Štůsek
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Martin Olbert
- Environmental Electron Microscopy Group, Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czech Republic
| | - Vilém Neděla
- Environmental Electron Microscopy Group, Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czech Republic
| | | | - Dominik Heger
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic.
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17
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Liu Y, Zhang S, Wang S, Zhang C, Su X, Guo L, Bai X, Huang Y, Pang W, Tan F, Tian K. Screening and Stability Evaluation of Freeze-Dried Protective Agents for a Live Recombinant Pseudorabies Virus Vaccine. Vaccines (Basel) 2024; 12:65. [PMID: 38250878 PMCID: PMC10821108 DOI: 10.3390/vaccines12010065] [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: 12/11/2023] [Revised: 12/28/2023] [Accepted: 01/06/2024] [Indexed: 01/23/2024] Open
Abstract
Infection of pigs with the pseudorabies virus (PRV) causes significant economic losses in the pig industry. Immunization with live vaccines is a crucial aspect in the prevention of pseudorabies in swine. The TK/gE/gI/11k/28k deleted pseudorabies vaccine is a promising alternative for the eradication of epidemic pseudorabies mutant strains. This study optimized the lyophilization of a heat-resistant PRV vaccine to enhance the quality of a live vaccine against the recombinant PRV rHN1201TK-/gE-/gI-/11k-/28k-. The A4 freeze-dried protective formulation against PRV was developed by comparing the reduction in virus titer after lyophilization and after seven days of storage at 37 °C. The formulation contains 1% gelatin, 5% trehalose, 0.5% poly-vinylpyrimidine (PVP), 0.5% thiourea, and 1% sorbitol. The A4 freeze-dried vaccine demonstrated superior protection and thermal stability. It experienced a freeze-dried loss of 0.31 Lg post-freeze-drying and a heat loss of 0.42 Lg after being stored at a temperature of 37 °C for 7 consecutive days. The A4 freeze-dried vaccine was characterized through XRD, FTIR, and SEM analyses, which showed that it possessed an amorphous structure with a consistent porous interior. The trehalose component of the vaccine formed stable hydrogen bonds with the virus. Long-term and accelerated stability studies were also conducted. The A4 vaccine maintained viral titer losses of less than 1.0 Lg when exposed to 25 °C for 90 days, 37 °C for 28 days, and 45 °C for 7 days. The A4 vaccine had a titer loss of 0.3 Lg after storage at 2-8 °C for 24 months, and a predicted shelf life of 6.61 years at 2-8 °C using the Arrhenius equation. The A4 freeze-dried vaccine elicited no side effects when used to immunize piglets and produced specific antibodies. This study provides theoretical references and technical support to improve the thermal stability of recombinant PRV rHN1201TK-/gE-/gI-/11k-/28k- vaccines.
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Affiliation(s)
- Yan Liu
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Suling Zhang
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Shuai Wang
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Chunhui Zhang
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Xiaorui Su
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Linghua Guo
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Xiaofei Bai
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Yuxin Huang
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Wenqiang Pang
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Feifei Tan
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
| | - Kegong Tian
- National Research Center for Veterinary Medicine, Luoyang 471000, China; (Y.L.); (S.Z.); (S.W.); (C.Z.); (X.S.); (L.G.); (X.B.); (Y.H.); (W.P.)
- Pulike Biological Engineering Inc., Luoyang 471000, China
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18
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Rahban M, Ahmad F, Piatyszek MA, Haertlé T, Saso L, Saboury AA. Stabilization challenges and aggregation in protein-based therapeutics in the pharmaceutical industry. RSC Adv 2023; 13:35947-35963. [PMID: 38090079 PMCID: PMC10711991 DOI: 10.1039/d3ra06476j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/30/2023] [Indexed: 04/26/2024] Open
Abstract
Protein-based therapeutics have revolutionized the pharmaceutical industry and become vital components in the development of future therapeutics. They offer several advantages over traditional small molecule drugs, including high affinity, potency and specificity, while demonstrating low toxicity and minimal adverse effects. However, the development and manufacturing processes of protein-based therapeutics presents challenges related to protein folding, purification, stability and immunogenicity that should be addressed. These proteins, like other biological molecules, are prone to chemical and physical instabilities. The stability of protein-based drugs throughout the entire manufacturing, storage and delivery process is essential. The occurrence of structural instability resulting from misfolding, unfolding, and modifications, as well as aggregation, poses a significant risk to the efficacy of these drugs, overshadowing their promising attributes. Gaining insight into structural alterations caused by aggregation and their impact on immunogenicity is vital for the advancement and refinement of protein therapeutics. Hence, in this review, we have discussed some features of protein aggregation during production, formulation and storage as well as stabilization strategies in protein engineering and computational methods to prevent aggregation.
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Affiliation(s)
- Mahdie Rahban
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences Kerman Iran
| | - Faizan Ahmad
- Department of Biochemistry, School of Chemical & Life Sciences, Jamia Hamdard New Delhi-110062 India
| | | | | | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University Rome Italy
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran Tehran 1417614335 Iran +9821 66404680 +9821 66956984
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19
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Shramova EI, Filimonova VP, Frolova AY, Pichkur EB, Fedotov VR, Konevega AL, Deyev SM, Proshkina GM. HER2-specific liposomes loaded with proteinaceous BRET pair as a promising tool for targeted self-excited photodynamic therapy. Eur J Pharm Biopharm 2023; 193:208-217. [PMID: 37956784 DOI: 10.1016/j.ejpb.2023.11.008] [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: 09/01/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/15/2023]
Abstract
Photodynamic therapy (PDT) for deep-seated tumors is still challenging due to the limited penetration of visible light through tissues. To resolve this limitation, systems based on bioluminescence resonance energy transfer (BRET), that do not require an external light source are proposed. Herein, for BRET-activated PDT we developed proteinaceous BRET-pair consisting of luciferase NanoLuc, which acts as energy donor upon addition of luciferase specific substrate furimazine, and phototoxic protein SOPP3 as a photosensitizer. We have shown that hybrid protein NanoLuc-SOPP3 is an excellent BRET pair with BRET ratio of 1.12. Targeted delivery of NanoLuc-SOPP3 BRET pair via tumor-specific small liposomes (∼100 nm) to tumors overexpressing the HER2-receptor (human epidermal growth factor receptor 2) was demonstrated in vitro and in vivo. The proposed BRET-activated system has been shown to significantly suppress tumor growth in a model of subcutaneous and, more importantly, deep-seated tumor model. Taking into account the in vivo efficiency of proposed BRET-activated system, we believe that it has great potential for depth-independent PDT and can significantly broaden the application of PDT in the clinic.
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Affiliation(s)
- Elena I Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Victoriya P Filimonova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Anastasiya Yu Frolova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Eugene B Pichkur
- Peter the Great St. Petersburg Polytechnic University, Politehnicheskaya 29, 195251 St. Petersburg, Russia
| | - Vlad R Fedotov
- Peter the Great St. Petersburg Polytechnic University, Politehnicheskaya 29, 195251 St. Petersburg, Russia
| | - Andrey L Konevega
- Peter the Great St. Petersburg Polytechnic University, Politehnicheskaya 29, 195251 St. Petersburg, Russia
| | - Sergey M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia; "Biomarker" Research Laboratory, Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan 420008, Russia; Sechenov First Moscow State Medical University (Sechenov University), 119991, Moscow, Russia
| | - Galina M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia.
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20
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Vitharana S, Stillahn JM, Katayama DS, Henry CS, Manning MC. Application of Formulation Principles to Stability Issues Encountered During Processing, Manufacturing, and Storage of Drug Substance and Drug Product Protein Therapeutics. J Pharm Sci 2023; 112:2724-2751. [PMID: 37572779 DOI: 10.1016/j.xphs.2023.08.003] [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: 10/14/2022] [Revised: 07/24/2023] [Accepted: 08/07/2023] [Indexed: 08/14/2023]
Abstract
The field of formulation and stabilization of protein therapeutics has become rather extensive. However, most of the focus has been on stabilization of the final drug product. Yet, proteins experience stress and degradation through the manufacturing process, starting with fermentaition. This review describes how formulation principles can be applied to stabilize biopharmaceutical proteins during bioprocessing and manufacturing, considering each unit operation involved in prepration of the drug substance. In addition, the impact of the container on stabilty is discussed as well.
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Affiliation(s)
| | - Joshua M Stillahn
- Legacy BioDesign LLC, Johnstown, CO 80534, USA; Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | | | - Charles S Henry
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Mark Cornell Manning
- Legacy BioDesign LLC, Johnstown, CO 80534, USA; Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
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21
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Rostamnezhad M, Mireskandari K, Rouini MR, Ansari S, Darabi M, Vatanara A. Screening of Cyclodextrins in the Processing of Buserelin Dry Powders for Inhalation Prepared by Spray Freeze-Drying. Adv Pharm Bull 2023; 13:772-783. [PMID: 38022810 PMCID: PMC10676555 DOI: 10.34172/apb.2023.086] [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: 02/11/2023] [Revised: 06/29/2023] [Accepted: 07/09/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose In this study, we prepared inhalable buserelin microparticles using the spray freeze-drying (SFD) method for pulmonary drug delivery. Raffinose as a cryoprotectant carrier was combined with two levels of five different cyclodextrins (CDs) and then processed by SFD. Methods Dry powder diameters were evaluated by laser light scattering and morphology was determined by scanning electron microscopy (SEM). Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) analysis were utilized for the determination of crystalline structures. The aerodynamic properties of the spray freeze-dried powders were evaluated by twin stage impinger (TSI) and the stability of prepared samples was assessed under normal and accelerated conditions. Results The prepared powders were mostly porous spheres and the size of microparticles ranged from 9.08 to 13.53 μm, which are suitable as spray-freeze dried particles. All formulations showed amorphous structure confirmed by DSC and XRD. The aerosolization performance of the formulation containing buserelin, raffinose and 5% beta-cyclodextrin (β-CD), was the highest and its fine particle fraction (FPF) was 69.38%. The more circular and separated structures were observed in higher concentrations of CDs, which were compatible with FPFs. The highest stability was obtained in the formulation containing hydroxypropyl beta-cyclodextrin (HP-β-16. CD) 5%. On the contrary, sulfobutylether beta-cyclodextrin (SBE-β-CD) 5% bearing particles showed the least stability. Conclusion By adjusting the type and ratio of CDs in the presence of raffinose, the prepared formulations could effectively enhance the aerosolization and stability of buserelin. Therefore, they can be proposed as a suitable career for lung drug delivery.
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Affiliation(s)
- Mostafa Rostamnezhad
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Katayoon Mireskandari
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Rouini
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Samira Ansari
- CinnaGen Medical Biotechnology Research Center, Alborz University of Medical Sciences, Karaj, Iran
- CinnaGen Research and Production Co., Alborz, Iran
| | - Majid Darabi
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Vatanara
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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22
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Fonvielle JA, Felgate SL, Tanentzap AJ, Hawkes JA. Assessment of sample freezing as a preservation technique for analysing the molecular composition of dissolved organic matter in aquatic systems. RSC Adv 2023; 13:24594-24603. [PMID: 37593662 PMCID: PMC10427896 DOI: 10.1039/d3ra01349a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 07/12/2023] [Indexed: 08/19/2023] Open
Abstract
Dissolved organic matter (DOM) is widely studied in environmental and biogeochemical sciences, but is susceptible to chemical and biological degradation during sample transport and storage. Samples taken in remote regions, aboard ships, or in large numbers need to be preserved for later analysis without changing DOM composition. Here we compare high-resolution mass spectra of solid phase extractable DOM before and after freezing at -20 °C. We found that freezing increases compositional dissimilarity in DOM by between 0 to 18.2% (median = 2.7% across 7 sites) when comparing replicates that were frozen versus unfrozen, i.e., processed immediately after sampling, as compared with differences between unfrozen replicates. The effects of freezing primarily consisted of a poorer detection limit, but were smaller than other sample preparation and analysis steps, such as solid phase extraction and variable ionisation efficiency. Freezing samples for either 21 or 95 days led to similar and only slight changes in DOM composition, albeit with more variation for the latter. Therefore, we conclude that sample freezing on these time scales should not impede scientific study of aquatic DOM and can be used where it makes logistical sense, such as for large spatial surveys or study of archived samples.
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Affiliation(s)
- Jeremy A Fonvielle
- Ecosystems and Global Change Group, Department of Plant Sciences, University of Cambridge Cambridge CB2 3EA UK
| | - Stacey L Felgate
- Department of Chemistry - BMC, Uppsala University Husargatan 3 Uppsala 752 37 Sweden
| | - Andrew J Tanentzap
- Ecosystems and Global Change Group, Department of Plant Sciences, University of Cambridge Cambridge CB2 3EA UK
- Ecosystems and Global Change Group, School of the Environment, Trent University Peterborough K9L 0G2 Canada
| | - Jeffrey A Hawkes
- Department of Chemistry - BMC, Uppsala University Husargatan 3 Uppsala 752 37 Sweden
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23
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Wong B, Zhao X, Su Y, Ouyang H, Rhodes T, Xu W, Xi H, Fu D. Characterizing Silicone Oil-Induced Protein Aggregation with Stimulated Raman Scattering Imaging. Mol Pharm 2023; 20:4268-4276. [PMID: 37382286 DOI: 10.1021/acs.molpharmaceut.3c00391] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
Particles in biopharmaceutical products present high risks due to their detrimental impacts on product quality and safety. Identification and quantification of particles in drug products are important to understand particle formation mechanisms, which can help develop control strategies for particle formation during the formulation development and manufacturing process. However, existing analytical techniques such as microflow imaging and light obscuration measurement lack the sensitivity and resolution to detect particles with sizes smaller than 2 μm. More importantly, these techniques are not able to provide chemical information to determine particle composition. In this work, we overcome these challenges by applying the stimulated Raman scattering (SRS) microscopy technique to monitor the C-H Raman stretching modes of the proteinaceous particles and silicone oil droplets formed in the prefilled syringe barrel. By comparing the relative signal intensity and spectral features of each component, most particles can be classified as protein-silicone oil aggregates. We further show that morphological features are poor indicators of particle composition. Our method has the capability to quantify aggregation in protein therapeutics with chemical and spatial information in a label-free manner, potentially allowing high throughput screening or investigation of aggregation mechanisms.
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Affiliation(s)
- Brian Wong
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Xi Zhao
- Analytical Enabling Capabilities, Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
- Sterile and Specialty Products, Pharmaceutical Sciences & Clinical Supply, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Yongchao Su
- Analytical Enabling Capabilities, Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Hanlin Ouyang
- Analytical Enabling Capabilities, Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Timothy Rhodes
- Analytical Enabling Capabilities, Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Wei Xu
- Analytical Enabling Capabilities, Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Hanmi Xi
- Analytical Enabling Capabilities, Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Dan Fu
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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24
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Li W, Chen Q, Wang X, Chen Z. Effect of Freezing on Soybean Protein Solution. Foods 2023; 12:2650. [PMID: 37509741 PMCID: PMC10379167 DOI: 10.3390/foods12142650] [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: 06/09/2023] [Revised: 06/30/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
To investigate the impact of frozen storage conditions on the physicochemical properties of soybean protein and explore the underlying mechanisms, this study focused on soybean isolate (SPI), ß-soybean companion globulin (7S), and soybean globulin (11S). The protein solutions were prepared at a concentration of 2% and subjected to freezing for 1 and 5 days. Subsequently, the protein content, physicochemical properties, secondary structure, sulfhydryl content, and chemical interaction forces were assessed and analyzed using UV spectrophotometry, Zeta potential measurements, SDS-PAGE, Fourier infrared spectroscopy, and endogenous fluorescence photoemission spectroscopy. The obtained results revealed that the solubility and total sulfhydryl content of SPI, 7S, and 11S exhibited a decreasing trend with prolonged freezing time. Among them, 11S demonstrated the largest decrease in solubility and total sulfhydryl content, followed by SPI, and 7S the least. During freezing, the aromatic amino acids of SPI, 7S, and 11S molecules were exposed, leading to increased hydrophobicity, protein aggregation, and particle size enlargement, and the structure of the protein changed from disordered structure to ordered structure. After freezing, the polarity of the microenvironment of SPI, 7S, and 11S increased, and their maximum fluorescence emission wavelengths were red-shifted. Notably, the largest red shift of SPI was from 332 nm to 335 nm. As freezing time increased, the contribution of hydrogen bonding increased, while the contribution of hydrophobic interactions decreased. This indicates that freezing affects the hydrophobic interactions, hydrogen bonding, and other chemical forces of the protein. The growth of ice crystals leads to the unfolding of protein molecular chains, exposure of internal hydrophobic groups, enhancement of hydrophobicity, and alters the secondary structure of the protein.
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Affiliation(s)
- Wenhui Li
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
| | - Qiongling Chen
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
| | - Xiaowen Wang
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
| | - Zhenjia Chen
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
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25
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Loyez M, Adolphson M, Liao J, Yang L. From Whispering Gallery Mode Resonators to Biochemical Sensors. ACS Sens 2023. [PMID: 37390481 DOI: 10.1021/acssensors.2c02876] [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: 07/02/2023]
Abstract
Optical biosensors are frontrunners for the rapid and real-time detection of analytes, particularly for low concentrations. Among them, whispering gallery mode (WGM) resonators have recently attracted a growing focus due to their robust optomechanical features and high sensitivity, measuring down to single binding events in small volumes. In this review, we provide a broad overview of WGM sensors along with critical advice and additional "tips and tricks" to make them more accessible to both biochemical and optical communities. Their structures, fabrication methods, materials, and surface functionalization chemistries are discussed. We propose this reflection under a pedagogical approach to describe and explain these biochemical sensors with a particular focus on the most recent achievements in the field. In addition to highlighting the advantages of WGM sensors, we also discuss and suggest strategies to overcome their current limitations, leaving room for further development as practical tools in various applications. We aim to provide new insights and combine different knowledge and perspectives to advance the development of the next generation of WGM biosensors. With their unique advantages and compatibility with different sensing modalities, these biosensors have the potential to become major game changers for biomedical and environmental monitoring, among many other relevant target applications.
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Affiliation(s)
- Médéric Loyez
- Department of Electrical & Systems Engineering, Washington University, One Brookings Drive Green Hall 2120F, St. Louis, Missouri 63130, United States
| | - Maxwell Adolphson
- Department of Electrical & Systems Engineering, Washington University, One Brookings Drive Green Hall 2120F, St. Louis, Missouri 63130, United States
| | - Jie Liao
- Department of Electrical & Systems Engineering, Washington University, One Brookings Drive Green Hall 2120F, St. Louis, Missouri 63130, United States
| | - Lan Yang
- Department of Electrical & Systems Engineering, Washington University, One Brookings Drive Green Hall 2120F, St. Louis, Missouri 63130, United States
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26
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Sonje J, Thakral S, Krueger S, Suryanarayanan R. Enabling Efficient Design of Biological Formulations Through Advanced Characterization. Pharm Res 2023; 40:1459-1477. [PMID: 36959413 DOI: 10.1007/s11095-023-03495-z] [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: 11/23/2022] [Accepted: 03/01/2023] [Indexed: 03/25/2023]
Abstract
The present review summarizes the use of differential scanning calorimetry (DSC) and scattering techniques in the context of protein formulation design and characterization. The scattering techniques include wide angle X-ray diffractometry (XRD), small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS). While DSC is valuable for understanding thermal behavior of the excipients, XRD provides critical information about physical state of solutes during freezing, annealing and in the final lyophile. However, as these techniques lack the sensitivity to detect biomolecule-related transitions, complementary characterization techniques such as small-angle scattering can provide valuable insights.
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Affiliation(s)
- Jayesh Sonje
- Department of Pharmaceutics, College of Pharmacy, University of Minnesota, 308 Harvard St. SE, Minneapolis, MN, 55455, USA
- BioTherapeutics, Pharmaceutical Sciences, Pfizer Inc., 1 Burtt Road, Andover, USA
| | - Seema Thakral
- Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, CT, 06877, USA
| | - Susan Krueger
- Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Raj Suryanarayanan
- Department of Pharmaceutics, College of Pharmacy, University of Minnesota, 308 Harvard St. SE, Minneapolis, MN, 55455, USA.
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27
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Dinh DM, Thomas LM, Karr EA. Crystal structure of a putative 3-hydroxypimelyl-CoA dehydrogenase, Hcd1, from Syntrophus aciditrophicus strain SB at 1.78 Å resolution. Acta Crystallogr F Struct Biol Commun 2023; 79:151-158. [PMID: 37227375 PMCID: PMC10231260 DOI: 10.1107/s2053230x23004399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/20/2023] [Indexed: 05/26/2023] Open
Abstract
Syntrophus aciditrophicus strain SB is a model syntroph that degrades benzoate and alicyclic acids. The structure of a putative 3-hydroxypimelyl-CoA dehydrogenase from S. aciditrophicus strain SB (SaHcd1) was resolved at 1.78 Å resolution. SaHcd1 contains sequence motifs and structural features that belong to the short-chain dehydrogenase/reductase (SDR) family of NADPH-dependent oxidoreductases. SaHcd1 is proposed to concomitantly reduce NAD+ or NADP+ to NADH or NADPH, respectively, while converting 3-hydroxypimelyl-CoA to 3-oxopimeyl-CoA. Further enzymatic studies are needed to confirm the function of SaHcd1.
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Affiliation(s)
- David M. Dinh
- Department of Microbiology and Plant Biology, University of Oklahoma, 770 Van Vleet Oval, Norman, OK 73019, USA
- Price Family Foundation Institute of Structural Biology, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Leonard M. Thomas
- Price Family Foundation Institute of Structural Biology, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Elizabeth A. Karr
- Department of Microbiology and Plant Biology, University of Oklahoma, 770 Van Vleet Oval, Norman, OK 73019, USA
- Price Family Foundation Institute of Structural Biology, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
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28
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Mendes SR, Gomis-Rüth FX, Goulas T. Frozen fresh blood plasma preserves the functionality of native human α 2-macroglobulin. Sci Rep 2023; 13:4579. [PMID: 36941303 PMCID: PMC10027685 DOI: 10.1038/s41598-023-31800-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 03/17/2023] [Indexed: 03/23/2023] Open
Abstract
Human α2-macroglobulin (hα2M) is a large homotetrameric protein involved in the broad inhibition of endopeptidases. Following cleavage within a bait region, hα2M undergoes stepwise transitions from its native, expanded, highly flexible, active conformation to an induced, compact, triggered conformation. As a consequence, the peptidase is entrapped by an irreversible Venus flytrap mechanism. Given the importance of hα2M, biochemical studies galore over more than seven decades have attempted to ascertain its role, typically using authentic hα2M purified from frozen and non-frozen fresh blood plasma, and even outdated plasma. However, hα2M is sensitive once isolated and purified, and becomes heterogeneous during storage and/or freezing, raising concerns about the functional competence of frozen plasma-derived hα2M. We therefore used a combination of native and sodium dodecylsulfate polyacrylamide gel electrophoresis, affinity and ion-exchange chromatography, multi-angle laser light scattering after size-exclusion chromatography, free cysteine quantification, and peptidase inhibition assays with endopeptidases of two catalytic classes and three protein substrates, to characterize the biochemical and biophysical properties of hα2M purified ad hoc either from fresh plasma or frozen fresh plasma after thawing. We found no differences in the molecular or functional properties of the preparations, indicating that protective components in plasma maintain native hα2M in a functionally competent state despite freezing.
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Affiliation(s)
- Soraia R Mendes
- Proteolysis Lab, Molecular Biology Institute of Barcelona (CSIC), Barcelona Science Park, c/Baldiri Reixac 15-21, 08028, Barcelona, Catalonia, Spain
| | - F Xavier Gomis-Rüth
- Proteolysis Lab, Molecular Biology Institute of Barcelona (CSIC), Barcelona Science Park, c/Baldiri Reixac 15-21, 08028, Barcelona, Catalonia, Spain.
| | - Theodoros Goulas
- Department of Food Science and Nutrition, School of Agricultural Sciences, University of Thessaly, 43100, Karditsa, Greece.
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29
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Lyophilization for Formulation Optimization of Drug-Loaded Thermoresponsive Polyelectrolyte Complex Nanogels from Functionalized Hyaluronic Acid. Pharmaceutics 2023; 15:pharmaceutics15030929. [PMID: 36986789 PMCID: PMC10053597 DOI: 10.3390/pharmaceutics15030929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/06/2023] [Accepted: 03/12/2023] [Indexed: 03/16/2023] Open
Abstract
The lyophilization of nanogels is practical not only for their long-term conservation but also for adjusting their concentration and dispersant type during reconstitution for different applications. However, lyophilization strategies must be adapted to each kind of nanoformulation in order to minimize aggregation after reconstitution. In this work, the effects of formulation aspects (i.e., charge ratio, polymer concentration, thermoresponsive grafts, polycation type, cryoprotectant type, and concentration) on particle integrity after lyophilization and reconstitution for different types of polyelectrolyte complex nanogels (PEC-NGs) from hyaluronic acid (HA) were investigated. The main objective was to find the best approach for freeze-drying thermoresponsive PEC-NGs from Jeffamine-M-2005-functionalized HA, which has recently been developed as a potential platform for drug delivery. It was found that freeze-drying PEC-NG suspensions prepared at a relatively low polymer concentration of 0.2 g.L−1 with 0.2% (m/v) trehalose as a cryoprotectant allow the homogeneous redispersion of PEC-NGs when concentrated at 1 g.L−1 upon reconstitution in PBS without important aggregation (i.e., average particle size remaining under 350 nm), which could be applied to concentrate curcumin (CUR)-loaded PEC-NGs for optimizing CUR content. The thermoresponsive release of CUR from such concentrated PEC-NGs was also reverified, which showed a minor effect of freeze-drying on the drug release profile.
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30
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Lu X, Kulkarni SS, Dong H, Tang Y, Yi L, Gupta S. Freezing process influences cake appearance of a lyophilized amorphous protein formulation with low solid content and high fill configuration. Int J Pharm 2023; 636:122803. [PMID: 36894041 DOI: 10.1016/j.ijpharm.2023.122803] [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: 12/19/2022] [Revised: 02/22/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023]
Abstract
Low solid content and high fill drug product configuration pose special challenges for achieving elegant cake appearance after lyophilization. In this study, such a configuration for a protein formulation required lyophilization within a narrow primary drying operating space to obtain elegant cakes. Freezing process optimization was explored as a solution. A Design of Experiment (DoE) approach was used to evaluate the effect of shelf cooling rate, annealing temperature, and their interaction on cake appearance. The slope of product resistance (Rp) vs. dried layer thickness (Ldry) was used as the quantitative response because elegant cake appearance correlated with a lower initial Rp and positive slope. As the Rp vs. Ldry slope can be experimentally established within the first 1/6th of the total primary drying duration, partial lyophilization runs were executed, allowing for rapid screening. The DoE model revealed that a slow cooling rate (≤0.3 °C/min) and high annealing temperature (≥-10 °C) resulted in a better cake appearance. Furthermore, X-ray micro-computed tomography showed that elegant cakes exhibited uniform porous structure and larger pores, while inelegant cakes showed dense top layers with smaller pores. With the optimized freezing process, the primary drying operating space was broadened with improved cake appearance and batch homogeneity.
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Affiliation(s)
- Xiaofeng Lu
- Drug Product Development, CMC Biologics, AbbVie, 1000 Gateway Blvd, South San Francisco, CA 94080, United States.
| | - Shreya S Kulkarni
- Drug Product Development, CMC Biologics, AbbVie, 1000 Gateway Blvd, South San Francisco, CA 94080, United States
| | - Hanmin Dong
- Drug Product Development, CMC Biologics, AbbVie, 1000 Gateway Blvd, South San Francisco, CA 94080, United States
| | - Yongan Tang
- Physical Analytical Chemistry, Development Science, AbbVie, 1 North Waukegan Road, North Chicago, IL 60064, United States
| | - Li Yi
- Drug Product Development, CMC Biologics, AbbVie, 1000 Gateway Blvd, South San Francisco, CA 94080, United States
| | - Supriya Gupta
- Drug Product Development, CMC Biologics, AbbVie, 1000 Gateway Blvd, South San Francisco, CA 94080, United States
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31
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Tan M, Ding Z, Chu Y, Xie J. Potential of Good's buffers to inhibit denaturation of myofibrillar protein upon freezing. Food Res Int 2023; 165:112484. [PMID: 36869497 DOI: 10.1016/j.foodres.2023.112484] [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: 10/12/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023]
Abstract
The current systematic study sought to examine the potential use of three Good's buffers (MES, MOPS and HEPES) in inhibiting myofibrillar protein (MFP) denaturation induced by acidity changes. The highest degree of acidity variation was found in the center and bottom of large bottles due to the freeze-concentration effect. Good's buffer tended to basify during freezing, and it could prevent the crystallization of sodium phosphate (Na-P) buffer. Acidification upon freezing Na-P disrupted the natural conformation of MFP and induced the formation of large proteins aggregates with tight packing. The 15 mM MES, 20 mM MOPS, and 30 mM HEPES were respectively added to neutralize the strong acidity drop induced by freezing 20 mM Na-P, and all of them significantly improved the stability of the MFP conformation (P < 0.05). This work is not only critical to meet the growing demand for protein, but also groundbreaking for broadening the applicability of Good's buffers in the food industry.
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Affiliation(s)
- Mingtang Tan
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Zhaoyang Ding
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquatic Product Processing & Preservation, Shanghai 201306, China; Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai 201306, China.
| | - Yuanming Chu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Jing Xie
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquatic Product Processing & Preservation, Shanghai 201306, China; Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai 201306, China; Collaborative Innovation Center of Seafood Deep Processing, Ministry of Education, Dalian 116034, China.
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32
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Zhao L, Rosati G, Piper A, de Carvalho Castro e Silva C, Hu L, Yang Q, Della Pelle F, Alvarez-Diduk RR, Merkoçi A. Laser Reduced Graphene Oxide Electrode for Pathogenic Escherichia coli Detection. ACS APPLIED MATERIALS & INTERFACES 2023; 15:9024-9033. [PMID: 36786303 PMCID: PMC9951213 DOI: 10.1021/acsami.2c20859] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Graphene-based materials are of interest in electrochemical biosensing due to their unique properties, such as high surface areas, unique electrochemical properties, and biocompatibility. However, the scalable production of graphene electrodes remains a challenge; it is typically slow, expensive, and inefficient. Herein, we reported a simple, fast, and maskless method for large-scale, low-cost reduced graphene oxide electrode fabrication; using direct writing (laser scribing and inkjet printing) coupled with a stamp-transferring method. In this process, graphene oxide is simultaneously reduced and patterned with a laser, before being press-stamped onto polyester sheets. The transferred electrodes were characterized by SEM, XPS, Raman, and electrochemical methods. The biosensing utility of the electrodes was demonstrated by developing an electrochemical test for Escherichia coli. These biosensors exhibited a wide dynamic range (917-2.1 × 107 CFU/mL) of low limits of detection (283 CFU/mL) using just 5 μL of sample. The test was also verified in spiked artificial urine, and the sensor was integrated into a portable wireless system driven and measured by a smartphone. This work demonstrates the potential to use these biosensors for real-world, point-of-care applications. Hypothetically, the devices are suitable for the detection of other pathogenic bacteria.
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Affiliation(s)
- Lei Zhao
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), Edifici ICN2, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Department
of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, Campus UAB, 08193 Bellaterra,
Barcelona, Spain
| | - Giulio Rosati
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), Edifici ICN2, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Andrew Piper
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), Edifici ICN2, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Cecilia de Carvalho Castro e Silva
- MackGraphe-Mackenzie
Institute for Research in Graphene and Nanotechnologies, Mackenzie Presbyterian University, Consolação Street
930, 01302-907 São
Paulo, Brazil
| | - Liming Hu
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), Edifici ICN2, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Department
of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, Campus UAB, 08193 Bellaterra,
Barcelona, Spain
| | - Qiuyue Yang
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), Edifici ICN2, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Department
of Material Science, Universitat Autònoma
de Barcelona, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Flavio Della Pelle
- Faculty
of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, via Renato Balzarini 1, 64100 Teramo, Italy
| | - Ruslán R. Alvarez-Diduk
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), Edifici ICN2, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Arben Merkoçi
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), Edifici ICN2, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Catalan
Institution for Research and Advanced Studies (ICREA), Passeig de Lluís Companys,
23, 08010 Barcelona, Spain
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33
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Pisano R, Artusio F, Adami M, Barresi AA, Fissore D, Frare MC, Zanetti F, Zunino G. Freeze-Drying of Pharmaceuticals in Vials Nested in a Rack System-Part I: Freezing Behaviour. Pharmaceutics 2023; 15:pharmaceutics15020635. [PMID: 36839958 PMCID: PMC9960346 DOI: 10.3390/pharmaceutics15020635] [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: 12/18/2022] [Revised: 02/06/2023] [Accepted: 02/11/2023] [Indexed: 02/16/2023] Open
Abstract
The distribution of biopharmaceuticals often requires either ultra-cold conditions or lyophilisation. In both cases, the drug product is frozen and, thus, exposed to similar stress conditions, which can be detrimental to its quality. However, these stresses can be inhibited or mitigated by a suitable formulation and/or an appropriate freezing design. This paper addresses how the key freezing parameters, i.e., ice nucleation temperature and cooling rate, impact the freezing behaviour of a sucrose-based formulation. The analysis included two loading configurations, vials directly resting on the shelf and nested in a rack system. The loading configuration affected the product freezing rate and the ice nucleation temperature distribution, resulting in larger ice crystals in the case of vials nested in a rack system. SEM micrographs and specific surface area measurements confirmed the different product morphology. Eventually, the different product morphology impacted the bioactivity recovery of lactate dehydrogenase.
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Affiliation(s)
- Roberto Pisano
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
- Correspondence:
| | - Fiora Artusio
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
| | | | - Antonello A. Barresi
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
| | - Davide Fissore
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
| | | | | | - Gabriele Zunino
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
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Minatovicz B, Sansare S, Mehta T, Bogner RH, Chaudhuri B. Large-Scale Freeze-Thaw of Protein Solutions: Study of the Relative Contributions of Freeze-Concentration and Ice Surface Area on Stability of Lactate Dehydrogenase. J Pharm Sci 2023; 112:482-491. [PMID: 36162492 DOI: 10.1016/j.xphs.2022.09.020] [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: 04/23/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 01/18/2023]
Abstract
Although bulk biotherapeutics are often frozen during fill finish and shipping to improve their stability, they can undergo degradation leading to losses in biological activity during sub-optimal freeze-thaw (F/T) process. Except for a few small-scale studies, the relative contribution of various F/T stresses to the instability of proteins has not been addressed. Thus, the objective of this study was to determine the individual contributions of freeze-concentration, ice surface area, and processing time to protein destabilization at a practical manufacturing-scale. Lactate dehydrogenase (LDH) in histidine buffer solutions were frozen in 1L containers. The frozen solutions were sliced into representative samples and assessed for the ice specific surface area (SSA) and extent of solutes freeze-concentration. For the first time to our knowledge, ice SSA was measured in dried samples from large-volume protein solutions using volumetric nitrogen adsorption isotherms. SSA measurements of the freeze-dried cakes showed that the ice surface area increased with an increase in the freezing rate. The ice SSA was also impacted by the position of the sample within the container: samples closer to the active cooled surface of the container exhibited smaller ice surface area compared to ice-cored samples from the center of the bottle. The freeze-concentrate composition was determined by measuring LDH concentration in the ice-cored samples. The protein distributed more evenly throughout the frozen solution after fast freezing which also correlated with enhanced protein stability compared to slow freezing conditions. Overall, better protein stability parameters correlated with higher ice SSA and lower freeze-concentration extent which was achieved at a faster freezing rate. Thus, extended residence time of the protein at the freeze-concentrated microenvironment is the critical destabilizing factor during freezing of LDH in bulk histidine buffer system. This study expands the understanding of the relative contributions of freezing stresses which, coupled with the knowledge of cryoprotection mechanisms, is imperative to the development of optimized processes and formulations aiming stable frozen protein solutions.
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Affiliation(s)
- Bruna Minatovicz
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs CT, 06269, USA
| | - Sameera Sansare
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs CT, 06269, USA
| | - Tanu Mehta
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs CT, 06269, USA
| | - Robin H Bogner
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs CT, 06269, USA
| | - Bodhisattwa Chaudhuri
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs CT, 06269, USA; Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA.
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35
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A Comprehensive Review of mRNA Vaccines. Int J Mol Sci 2023; 24:ijms24032700. [PMID: 36769023 PMCID: PMC9917162 DOI: 10.3390/ijms24032700] [Citation(s) in RCA: 51] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/23/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
mRNA vaccines have been demonstrated as a powerful alternative to traditional conventional vaccines because of their high potency, safety and efficacy, capacity for rapid clinical development, and potential for rapid, low-cost manufacturing. These vaccines have progressed from being a mere curiosity to emerging as COVID-19 pandemic vaccine front-runners. The advancements in the field of nanotechnology for developing delivery vehicles for mRNA vaccines are highly significant. In this review we have summarized each and every aspect of the mRNA vaccine. The article describes the mRNA structure, its pharmacological function of immunity induction, lipid nanoparticles (LNPs), and the upstream, downstream, and formulation process of mRNA vaccine manufacturing. Additionally, mRNA vaccines in clinical trials are also described. A deep dive into the future perspectives of mRNA vaccines, such as its freeze-drying, delivery systems, and LNPs targeting antigen-presenting cells and dendritic cells, are also summarized.
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36
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Ó'Fágáin C, Colliton K. Storage and Lyophilization of Pure Proteins. Methods Mol Biol 2023; 2699:421-475. [PMID: 37647008 DOI: 10.1007/978-1-0716-3362-5_19] [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] [Indexed: 09/01/2023]
Abstract
This chapter outlines empirical procedures for the storage of pure proteins with preservation of high levels of biological activity. It describes simple and workable means of preventing microbial contamination and proteolytic degradation and the use of various types of stabilizing additives. It sets out the principles of lyophilization (a complex process comprising freezing, primary drying, and secondary drying stages, otherwise known as freeze-drying). There follows a general procedure for the use of lyophilizer apparatus with emphasis on best practice and on pitfalls to avoid. The use of modulated differential scanning calorimetry to measure the glass transition temperature, a key parameter in the design and successful operation of lyophilization processes, is described. This chapter concludes with brief summaries of interesting recent work in the field.
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Affiliation(s)
- Ciarán Ó'Fágáin
- School of Biotechnology, Dublin City University, Dublin, Ireland.
| | - Keith Colliton
- Pfizer Ireland Pharmaceuticals, Grange Castle Business Park, Dublin, Ireland
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37
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Liu ZL, Chen X. Water-Content-Dependent Morphologies and Mechanical Properties of Bacillus subtilis Spores' Cortex Peptidoglycan. ACS Biomater Sci Eng 2022; 8:5094-5100. [PMID: 36442506 DOI: 10.1021/acsbiomaterials.2c01209] [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: 11/30/2022]
Abstract
Peptidoglycan (PG), bacterial spores' major structural component in their cortex layers, was recently found to regulate the spore's water content and deform in response to relative humidity (RH) changes. Here, we report that the cortex PG dominates the Bacillus subtilis spores' water-content-dependent morphological and mechanical properties. When exposed to an environment having RH varied between 10% and 90%, the spores and their cortex PG reversibly expand and contract by 30.7% and 43.2% in volume, which indicates that the cortex PG contributes to 67.3% of a spore's volume change. The spores' and cortex PG's significant volumetric changes also lead to changes in their Young's moduli from 5.7 and 9.0 GPa at 10% RH to 0.62 and 1.2 GPa at 90% RH, respectively. Interestingly, these significant changes in the spores' and cortex PG's morphological and mechanical properties are only caused by a minute amount of the cortex PG's water exchange that occupies 28.0% of the cortex PG's volume. The cortex PG's capability in sensing and responding to environmental RH and effectively changing its structures and properties could provide insight into spores' high desiccation resistance and dormancy mechanisms.
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Affiliation(s)
- Zhi-Lun Liu
- Advanced Science Research Center (ASRC), The City University of New York, 85 St. Nicholas Terrace, New York, New York10031, United States.,Department of Chemical Engineering, The City College of New York, 275 Convent Ave., New York, New York10031, United States
| | - Xi Chen
- Advanced Science Research Center (ASRC), The City University of New York, 85 St. Nicholas Terrace, New York, New York10031, United States.,Department of Chemical Engineering, The City College of New York, 275 Convent Ave., New York, New York10031, United States.,Ph.D. Program in Physics, The Graduate Center of the City University of New York, 365 Fifth Ave., New York, New York10016, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Ave., New York, New York10016, United States
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38
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Li J, Chang Y, Yang S, Zhou G, Wei Y. Formulation enhanced the stability of Foot-and-mouth virus and prolonged vaccine storage. Virol J 2022; 19:207. [PMID: 36463170 PMCID: PMC9719126 DOI: 10.1186/s12985-022-01928-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 11/14/2022] [Indexed: 12/05/2022] Open
Abstract
Foot-and-mouth disease (FMD) is a highly contagious viral disease that affects cloven-hoofed animals. Vaccination is the most effective measure to control FMD. However, FMDV particles are prone to dissociation, leading to insufficient potency of vaccine. Based on this characteristic, a combination of twenty percentage trehalose, 500 mM NaCl and 3 mM CuSO4·5H2O was developed to increase viral stability. Heating-resistance test showed that FMDV infectivity was maintained when formulated with formulation. Additionally, the half-life of FMDV inactivation was prolonged remarkably. Sequencing analysis demonstrated that viral genome could not be altered in serial passages. Vaccine stability was monitored for up to 1 year at 4 °C, with a higher level of 146S content remained. This study suggested that the formulation could protect FMDV against massive structural breakdown and extend the shelf life of vaccine. Our findings could provide strategy to develop more solutions for the stabilization of viral vaccine.
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Affiliation(s)
- Jing Li
- grid.411734.40000 0004 1798 5176College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China ,China Agricultural Vet.Bio.Science and Technology Co, Ltd, Lanzhou, China
| | - Yanyan Chang
- China Agricultural Vet.Bio.Science and Technology Co, Ltd, Lanzhou, China
| | - Shunli Yang
- grid.454892.60000 0001 0018 8988State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute Chinese Academy of Agricultural Sciences, Lanzhou, People’s Republic of China
| | - Guangqing Zhou
- grid.454892.60000 0001 0018 8988State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute Chinese Academy of Agricultural Sciences, Lanzhou, People’s Republic of China
| | - Yanming Wei
- grid.411734.40000 0004 1798 5176College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
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Preston KB, Wong TAS, Lieberman MM, To A, Lai CY, Granados A, Thomasson H, Misamore J, Yalley-Ogunro J, Cabus M, Andersen H, Donini O, Lehrer AT, Randolph TW. Lyophilized Filovirus Glycoprotein Vaccines: Peroxides in a Vaccine Formulation with Polysorbate 80-Containing Adjuvant are Associated with Reduced Neutralizing Antibody Titers in Both Mice and Non-Human Primates. J Pharm Sci 2022; 111:3424-3434. [PMID: 35609629 DOI: 10.1016/j.xphs.2022.05.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/18/2022] [Accepted: 05/18/2022] [Indexed: 01/05/2023]
Abstract
Zaire ebolavirus, Sudan ebolavirus, and Marburg marburgvirus are the filoviruses most commonly associated with human disease. Previously, we administered a three-dose regimen of trivalent vaccines comprising glycoprotein antigens from each virus in mice and non-human primates (NHPs). The vaccines, which contained a polysorbate 80-stabilized squalane-in-water emulsion adjuvant and were lyophilized from a solution containing trehalose, produced high antibody levels against all three filovirus antigens. Subsequently, single-vial formulations containing a higher concentration of adjuvant were generated for testing in NHPs, but these vaccines elicited lower neutralizing antibody titers in NHPs than previously tested formulations. In order to explain these results, in the current work we measured the size of adjuvant emulsion droplets and the peroxide levels present in the vaccines after lyophilization and reconstitution and tested the effects of these variables on the immune response in mice. Increases in squalane droplet sizes were observed when the ratio of adjuvant to trehalose was increased beyond a critical value, but antibody and neutralizing antibody titers in mice were independent of the droplet size. Higher levels of peroxides in the vaccines correlated with higher concentrations of adjuvant in the formulations, and higher peroxide levels were associated with increased levels of oxidative damage to glycoprotein antigens. Neutralizing titers in mice were inversely correlated with peroxide levels in the vaccines, but peroxide levels could be reduced by adding free methionine, resulting in retention of high neutralizing antibody titers. Overall, the results suggest that oxidation of glycoprotein antigens by peroxides in the polysorbate 80-stabilized squalane-in-water emulsion adjuvant, but not lyophilization-induced increases in adjuvant emulsion droplet size may have been responsible for the decreased neutralizing titers seen in formulations containing higher amounts of adjuvant.
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Affiliation(s)
- Kendall B Preston
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, United States
| | - Teri Ann S Wong
- Department of Tropical Medicine, Medical Microbiology & Pharmacology, John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, HI 96813, United States
| | - Michael M Lieberman
- Department of Tropical Medicine, Medical Microbiology & Pharmacology, John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, HI 96813, United States
| | - Albert To
- Department of Tropical Medicine, Medical Microbiology & Pharmacology, John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, HI 96813, United States
| | - Chih-Yun Lai
- Department of Tropical Medicine, Medical Microbiology & Pharmacology, John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, HI 96813, United States
| | | | | | | | | | - Mehtap Cabus
- BIOQUAL, Inc., Rockville, MD 20850, United States
| | | | | | - Axel T Lehrer
- Department of Tropical Medicine, Medical Microbiology & Pharmacology, John A. Burns School of Medicine, University of Hawai'i at Manoa, Honolulu, HI 96813, United States
| | - Theodore W Randolph
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, United States.
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40
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Monajati M, Tamaddon AM, Abolmaali SS, Yousefi G, Borandeh S, Dinarvand R. Enhanced L-asparaginase stability through immobilization in supramolecular nanogels of PEG-grafted poly HPMA with bis(α-cyclodextrin). Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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41
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Berlina AN, Ragozina MY, Komova NS, Serebrennikova KV, Zherdev AV, Dzantiev BB. Development of Lateral Flow Test-System for the Immunoassay of Dibutyl Phthalate in Natural Waters. BIOSENSORS 2022; 12:1002. [PMID: 36354511 PMCID: PMC9688391 DOI: 10.3390/bios12111002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
The use of a large amount of toxic synthetic materials leads to an increase in the pollution of environmental objects. Phthalates are compounds structurally related to esters of phthalic acid that are widely used in the manufacturing of synthetic packaging materials as plasticizers. Their danger is conditioned by leaching into the environment and penetrating into living organisms with negative consequences and effects on various organs and tissues. This work presents the first development of lateral flow immunoassay to detect dibutyl phthalate, one of the most common representatives of the phthalates group. To form a test zone, a hapten-protein conjugate was synthesized, and gold nanoparticles conjugated with antibodies to dibutyl phthalate were used as a detecting conjugate. The work includes the preparation of immunoreagents, selectivity investigation, and the study of the characteristics of the medium providing a reliable optical signal. Under the selected conditions for the analysis, the detection limit was 33.4 ng/mL, and the working range of the determined concentrations was from 42.4 to 1500 ng/mL. Time of the assay-15 min. The developed technique was successfully applied to detect dibutyl phthalate in natural waters with recovery rates from 75 to 115%.
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42
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Dao HM, Sahakijpijarn S, Chrostowski R, Peng HH, Moon C, Xu H, Mangolini F, Do HH, Cui Z, Williams RO. Entrapment of air microbubbles by ice crystals during freezing exacerbates freeze-induced denaturation of proteins. Int J Pharm 2022; 628:122306. [DOI: 10.1016/j.ijpharm.2022.122306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/10/2022] [Accepted: 10/12/2022] [Indexed: 10/31/2022]
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43
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Zhao JH, Kumar PK, Sablani SS. Glass transitions in frozen systems as influenced by molecular weight of food components. Compr Rev Food Sci Food Saf 2022; 21:4683-4715. [PMID: 36156387 DOI: 10.1111/1541-4337.13034] [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: 01/21/2022] [Revised: 07/29/2022] [Accepted: 08/15/2022] [Indexed: 01/28/2023]
Abstract
Freezing is a frequently used way to expand the storage life of foods with high water content. Under suitable cooling rates, frozen systems attain a condition of maximum freeze concentration, which is characterized by the glass transition temperature (Tg '), end point of freezing or onset of melting (Tm '), and concentration of solids (Xs ') in the maximum-freeze-concentrated matrix. The value of Tg ', Tm ', and Xs ' depends on the chemical composition of frozen system. Below Tg ', the rates of deteriorative reactions are significantly reduced. In this article, the data for Tg ', Tm ', and Xs ' of different frozen systems including sugars, starches, proteins, and food are collected and compiled. The trends in Tg ' and Tm ' data of food are investigated using molecular weight (MW) of food components. The Tg ' and Tm ' of most starches (increased by 2.46% to 87.3% and 10.8% to 85.0%) and some protein-rich foods (increased by 5.00% to 53.4% and 25.0% to 52.9%) were higher than the maximum values of sugar-rich foods. Both Tg ' and Tm ' values increased with increasing MW of solids in frozen food, reaching an asymptotic value. Moreover, there were exponential relationships between Tg ' or Tm ' values and MW for sugar and starch-rich foods taken together. Some studies found that frozen storage below Tg ' maintains the higher quality of food that was achieved by fast freezing. However, other studies found that there was no significant difference in the quality of frozen foods between storage temperature below and above Tg '. Therefore, storage below Tg ' is not the only factor for predicting the stability of frozen foods.
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Affiliation(s)
| | - Pavitra Krishna Kumar
- Biological Systems Engineering Department, Washington State University, Pullman, Washington, USA
| | - Shyam S Sablani
- Biological Systems Engineering Department, Washington State University, Pullman, Washington, USA
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44
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Tan M, Ding Z, Xie J. Freezing-induced myofibrillar protein denaturation: Contributions of freeze-concentration and role of cellobiose. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2022.111076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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45
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Kocer E, Kılıc‐Akyılmaz M. Impact of inulin and stabilizers on rehydration, stability and physical properties after reconstitution of yoghurt powder. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.17001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ezgı Kocer
- Istanbul Technical University Department of Food Engineering Istanbul Turkey
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46
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Deck LT, Ochsenbein DR, Mazzotti M. Stochastic ice nucleation governs the freezing process of biopharmaceuticals in vials. Int J Pharm 2022; 625:122051. [PMID: 35907555 DOI: 10.1016/j.ijpharm.2022.122051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 11/25/2022]
Abstract
Biopharmaceuticals commonly require freezing to ensure the stability of the active pharmaceutical ingredients (APIs). At commercial scale, freezing is typically carried out over the course of days in pallets comprising tens of thousands of vials. The selected process conditions have to ensure both complete freezing in all vials and a satisfactory manufacturing throughput. Current process design, however, is mainly experimental, since no mechanistic understanding of pallet freezing and its underlying phenomena has been achieved so far. Within this work, we derive a mechanistic modeling framework and compare the model predictions with engineering run data from the Janssen COVID-19 vaccine. The model qualitatively reproduced all observed trends and reveals that stochastic ice nucleation governs both process duration and batch heterogeneity. Knowledge on the ice nucleation kinetics of the formulation to be frozen thus is required to identify suitable freezing process conditions. The findings of this work pave the way towards a more rational design of pallet freezing, from which a plethora of frozen drug products may benefit. For this reason, we provide open source access to the model in the form of a python package (Deck et al., 2021).
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Affiliation(s)
- Leif-Thore Deck
- Institute of Energy and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - David R Ochsenbein
- The Janssen Pharmaceutical Companies of Johnson & Johnson, Hochstrasse 201, CH-8200 Schaffhausen, Switzerland
| | - Marco Mazzotti
- Institute of Energy and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland.
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47
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Sonje J, Chisholm CF, Suryanarayanan R. Frozen storage of proteins: Use of mannitol to generate a homogenous freeze-concentrate. Int J Pharm 2022; 630:121995. [PMID: 35809832 DOI: 10.1016/j.ijpharm.2022.121995] [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: 04/29/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 12/14/2022]
Abstract
Therapeutic proteins may be subjected to several freeze-thaw cycles throughout manufacturing and storage. The protein solution composition and the freezing conditions may lead to incomplete ice crystallization in the frozen state. This can also result in freeze-concentrate heterogeneity characterized by multiple glass transition temperatures and protein destabilization. The overall objective was to investigate the potential advantages of including a crystallizing excipient (mannitol) along with a sugar (sucrose or trehalose) for frozen storage. This study showed that the addition of mannitol, a readily crystallizing excipient, facilitated ice crystallization. Inclusion of an isothermal hold during cooling (annealing) maximized the mannitol crystallization and resulted in a homogenous freeze-concentrate of a constant composition characterized by a single glass transition temperature. The role of freezing rate and annealing on both mannitol and ice crystallization were discerned using high intensity synchrotron radiation. The addition of sucrose or trehalose, at an appropriate concentration, stabilized the protein. The mannitol to sugar ratio (3:1 or 1:1, 5 % w/v) was optimized to selectively cause maximal crystallization of mannitol while retaining the sugar amorphous. Human serum albumin (1 mg/mL) in these optimized and annealed compositions did not show any meaningful aggregation, even after multiple freeze-thaw cycles. Thus, in addition to a sugar as a stabilizer, the use of a crystallizing excipient coupled with an annealing step can provide an avenue for frozen storage of proteins.
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Affiliation(s)
- Jayesh Sonje
- Department of Pharmaceutics, College of Pharmacy, 308 Harvard St. SE, University of Minnesota, Minneapolis, MN 55455, USA
| | - Carly Fleagle Chisholm
- Drug Product Development, BioTherapeutics Development & Supply, Janssen Research & Development, Malvern, PA 19355, USA
| | - Raj Suryanarayanan
- Department of Pharmaceutics, College of Pharmacy, 308 Harvard St. SE, University of Minnesota, Minneapolis, MN 55455, USA.
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48
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Mohamed SH, Hady OA, Kashef MT, Zedan H. Antivenoms, hepatitis B vaccine and oral polio vaccine can be considered for storage and handling outside the cold chain following the innovative ‘controlled temperature chain’ approach. Biologicals 2022; 78:27-35. [DOI: 10.1016/j.biologicals.2022.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/07/2022] [Accepted: 06/22/2022] [Indexed: 11/28/2022] Open
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49
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Kim NA, Noh GY, Hada S, Na KJ, Yoon HJ, Park KW, Park YM, Jeong SH. Enhanced protein aggregation suppressor activity of N-acetyl-l-arginine for agitation-induced aggregation with silicone oil and its impact on innate immune responses. Int J Biol Macromol 2022; 216:42-51. [PMID: 35779650 DOI: 10.1016/j.ijbiomac.2022.06.176] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/07/2022] [Accepted: 06/26/2022] [Indexed: 11/26/2022]
Abstract
Previously, N-acetyl-l-arginine (NALA) suppressed the aggregation of intravenous immunoglobulins (IVIG) more effectively and with a minimum decrease in transition temperature (Tm) than arginine monohydrochloride. In this study, we performed a comparative study with etanercept (commercial product: Enbrel®), where 25 mM arginine monohydrochloride (arginine) was added to the prefilled syringe. The biophysical properties were investigated using differential scanning calorimetry (DSC), dynamic light scattering (DLS), size-exclusion chromatography (SEC), and flow-imaging microscopy (FI). NALA retained the transition temperature of etanercept better than arginine, where arginine significantly reduced the Tm by increasing its concentration. End-over-end rotation was applied to each formulation for 5 days to accelerate protein aggregation and subvisible particle formation. Higher monomeric content was retained with NALA with a decrease in particle level. Higher aggregation onset temperature (Tagg) was detected for etanercept with NALA than arginine. The results of this comparative study were consistent with previous study, suggesting that NALA could be a better excipient for liquid protein formulations. Agitated IVIG and etanercept were injected into C57BL/6 J female mice to observe immunogenic response after 24 h. In the presence of silicone oil, NALA dramatically reduced IL-1 expression, implying that decreased aggregation was related to reduced immunogenicity of both etanercept and IVIG.
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Affiliation(s)
- Nam Ah Kim
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea; College of Pharmacy, Mokpo National University, Jeonnam 58554, Republic of Korea.
| | - Ga Yeon Noh
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea
| | - Shavron Hada
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea
| | - Kyung Jun Na
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea
| | - Hee-Jung Yoon
- Division of Health and Kinesiology, Incheon National University, Incheon 22012, Republic of Korea
| | - Ki-Woong Park
- Division of Health and Kinesiology, Incheon National University, Incheon 22012, Republic of Korea.
| | - Young-Min Park
- Division of Health and Kinesiology, Incheon National University, Incheon 22012, Republic of Korea.
| | - Seong Hoon Jeong
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
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Fiedler D, Alva C, Pinto JT, Spoerk M, Jeitler R, Roblegg E. In-vial printing and drying of biologics as a personalizable approach. Int J Pharm 2022; 623:121909. [PMID: 35697202 DOI: 10.1016/j.ijpharm.2022.121909] [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: 04/11/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 10/18/2022]
Abstract
This study addressed the need for a flexible (personalizable) production of biologics, allowing their stabilization in the solid state and processing of small batch volumes. Therefore, inkjet printing into vials followed by a gentle vacuum drying step at ambient temperature was investigated by screening different formulations with a 22-full factorial design of experiments regarding printability. Human Serum Albumin (HSA) was used as a model protein in a wide range of concentrations (5 to 50 mg/ml), with (10 w/v%) and without the surfactant polysorbate 80 (PS80). PS80 was identified to positively affect the formulations by increasing the Ohnesorge number and stabilizing the printing process. The dispensed volumes with a target dose of 0.5 mg HSA were dried and analyzed concerning their residual moisture (RM) and protein aggregation. All investigated formulations showed an RM < 10 wt% and no significant induced protein aggregation as confirmed by Size Exclusion Chromatography (<2.5%) and Dynamic Light Scattering (Aggregation Index ≤ 2.5). Additionally, long-term printability and the available final dose after reconstitution were investigated for two optimized formulations. A promising formulation providing ∼93% of the targeted dose and a reconstitution time of 30 s was identified.
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Affiliation(s)
- Daniela Fiedler
- Graz University of Technology, Institute of Process and Particle Engineering, Inffeldgasse 13/III, 8010 Graz, Austria
| | - Carolina Alva
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13/II, 8010 Graz, Austria
| | - Joana T Pinto
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13/II, 8010 Graz, Austria
| | - Martin Spoerk
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13/II, 8010 Graz, Austria
| | - Ramona Jeitler
- University of Graz, Institute of Pharmaceutical Sciences, Pharmaceutical Technology & Biopharmacy, Universitätsplatz 1, 8010 Graz, Austria
| | - Eva Roblegg
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13/II, 8010 Graz, Austria; University of Graz, Institute of Pharmaceutical Sciences, Pharmaceutical Technology & Biopharmacy, Universitätsplatz 1, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria.
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