1
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Lennard A, Zimmermann B, Clenet D, Molony M, Tami C, Aviles CO, Moran A, Pue-Gilchrist P, Flores E. Stability Modeling Methodologies to Enable Earlier Patient Access. J Pharm Sci 2024:S0022-3549(24)00425-8. [PMID: 39343099 DOI: 10.1016/j.xphs.2024.09.018] [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: 08/19/2024] [Accepted: 09/16/2024] [Indexed: 10/01/2024]
Abstract
Over recent years, confidence has been gained that predictive stability modeling approaches using statistical tools, prior knowledge and industry experience enable, in many instances, a robust and reliable shelf-life/expiry or retest period prediction for medicinal products. These science and risk-based approaches can compensate for not having a complete real-time stability data set to be included in regulatory applications at the time of initial submission and, thereby, accelerate the availability of new medicines. Examples of predictive stability modeling include accelerated stability assessment procedure (ASAP), advanced kinetic modeling (AKM), and novel modeling approaches that involve the use of Bayesian statistics and Artificial Intelligence (AI) applications such as Machine Learning (ML), with applicability to both synthetic and biological molecules. For biologics, product-specific and platform prior knowledge could be used to overcome model limitations known for non-quantitative stability indicating attributes. A successful ongoing verification approach by comparing the predicted data with real-time stability data would be an appropriate risk management approach which is intended to address regulatory concerns, and further build confidence in the robustness of these predictive modelling approaches with regulatory agencies. Global regulatory acceptance of stability modeling could allow patients to receive potential life-saving medications faster without compromising quality, safety or efficacy.
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Affiliation(s)
- Andrew Lennard
- Amgen Limited, 4 Uxbridge Business Park, Sanderson Road, Uxbridge, UB8 1DH, UK
| | - Boris Zimmermann
- Genentech (A Member of the Roche Group), 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Didier Clenet
- Global Bioprocess Development, Vaccine CMC Development & Supply, Sanofi, 1541 Avenue Marcel Merieux, Marcy-L' Etoile 69280, France
| | - Michael Molony
- Insmed, Inc. 700 US Highway 202/206, Bridgewater, NJ 08807
| | - Cecilia Tami
- Genentech (A Member of the Roche Group), 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Cristian Oliva Aviles
- Genentech (A Member of the Roche Group), 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Amy Moran
- Vertex Pharmaceuticals, 50 Northern Ave,Boston, MA 02210
| | | | - E'Lissa Flores
- Biotechnology Innovation Organization (BIO), 1201 New York Ave NW Suite 1300, Washington, DC 20005.
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2
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Lian S, Lamprou D, Zhao M. Electrospinning technologies for the delivery of Biopharmaceuticals: Current status and future trends. Int J Pharm 2024; 651:123641. [PMID: 38029864 DOI: 10.1016/j.ijpharm.2023.123641] [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: 08/11/2023] [Revised: 11/15/2023] [Accepted: 11/26/2023] [Indexed: 12/01/2023]
Abstract
This review provides an in-depth exploration of electrospinning techniques employed to produce micro- or nanofibres of biopharmaceuticals using polymeric solutions or melts with high-voltage electricity. Distinct from prior reviews, the current work narrows its focus on the recent developments and advanced applications in biopharmaceutical formulations. It begins with an overview of electrospinning principles, covering both solution and melt modes. Various methods for incorporating biopharmaceuticals into electrospun fibres, such as surface adsorption, blending, emulsion, co-axial, and high-throughput electrospinning, are elaborated. The review also surveys a wide array of biopharmaceuticals formulated through electrospinning, thereby identifying both opportunities and challenges in this emerging field. Moreover, it outlines the analytical techniques for characterizing electrospun fibres and discusses the legal and regulatory requirements for their production. This work aims to offer valuable insights into the evolving realm of electrospun biopharmaceutical delivery systems.
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Affiliation(s)
- Shangjie Lian
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK
| | | | - Min Zhao
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK; China Medical University- Queen's University Belfast Joint College (CQC), China Medical University, Shenyang 110000, China
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3
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Yeh IH, Shi HF, Darius E, Lien MC, Lu YC, Wang C, Liu KK. Plasmonic biochips with enhanced stability in harsh environments for the sensitive detection of prostate-specific antigen. J Mater Chem B 2024; 12:1617-1623. [PMID: 38270244 DOI: 10.1039/d3tb02303f] [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
Hollow and porous plasmonic nanomaterials have been demonstrated for highly sensitive biosensing applications due to their distinctive optical properties. Immunosensors, which rely on antibody-antigen interactions, are essential constituents of diverse biosensing platforms owing to their exceptional binding affinity and selectivity. The majority of immunosensors and conventional bioassays needs special storage conditions and cold chain systems for transportation. Prostate-specific antigen (PSA), a serine protease, is widely employed in the diagnosis of prostate cancer. In this study, we present the successful utilization of a biopolymer-preserved plasmonic biosensor with improved environmental stability for the sensitive detection of PSA. The preserved plasmonic biosensors exhibited sustained sensitivity in the detection of PSA, achieving a limit of detection of 10 pg mL-1. Furthermore, these biosensors exhibited remarkable stability at elevated temperatures for one week.
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Affiliation(s)
- I-Hsiu Yeh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.
| | - Hui-Fang Shi
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.
| | - Evan Darius
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.
| | - Mei-Chin Lien
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.
| | - Yin-Cheng Lu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.
| | - Congzhou Wang
- Nanoscience and Biomedical Engineering, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
- BioSystems Networks & Translational Research (BioSNTR), Rapid City, South Dakota 57701, USA
| | - Keng-Ku Liu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.
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4
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Lewicki S, Zwoliński M, Hovagimyan A, Stelmasiak M, Szarpak Ł, Lewicka A, Pojda Z, Szymański Ł. Chitosan-Based Dressing as a Sustained Delivery System for Bioactive Cytokines. Int J Mol Sci 2023; 25:30. [PMID: 38203201 PMCID: PMC10778940 DOI: 10.3390/ijms25010030] [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: 09/26/2023] [Revised: 12/08/2023] [Accepted: 12/14/2023] [Indexed: 01/12/2024] Open
Abstract
Wounds represent a common occurrence in human life. Consequently, scientific investigations are underway to advance wound healing methodologies, with a notable focus on dressings imbued with biologically active compounds capable of orchestrating the wound microenvironment through meticulously regulated release mechanisms. Among these bioactive agents are cytokines, which, when administered to the wound milieu without appropriate protection, undergo rapid loss of their functional attributes. Within the context of this research, we present a method for fabricating dressings enriched with G-CSF (granulocyte colony-stimulating factor) or GM-CSF (granulocyte-macrophage colony-stimulating factor), showcasing both biological activity and protracted release dynamics. Based on Ligasano, a commercial polyurethane foam dressing, and chitosan crosslinked with TPP (sodium tripolyphosphate), these dressings are noncytotoxic and enable cytokine incorporation. The recovery of cytokines from dressings varied based on the dressing preparation and storage techniques (without modification, drying, freeze-drying followed by storage at 4 °C or freeze-drying followed by storage at 24 °C) and cytokine type. Generally, drying reduced cytokine levels and their bioactivity, especially with G-CSF. The recovery of G-CSF from unmodified dressings was lower compared to GM-CSF (60% vs. 80%). In summary, our freeze-drying approach enables the storage of G-CSF or GM-CSF enriched dressings at 24 °C with minimal cytokine loss, preserving their biological activity and thus enhancing future clinical availability.
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Affiliation(s)
- Sławomir Lewicki
- Institute of Outcomes Research, Maria Sklodowska-Curie Medical Academy, 03-411 Warsaw, Poland
| | - Michał Zwoliński
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Radom, 26-600 Radom, Poland; (M.Z.); (A.H.); (M.S.)
| | - Adrian Hovagimyan
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Radom, 26-600 Radom, Poland; (M.Z.); (A.H.); (M.S.)
| | - Marta Stelmasiak
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Radom, 26-600 Radom, Poland; (M.Z.); (A.H.); (M.S.)
| | - Łukasz Szarpak
- Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX 77030, USA;
- Department of Clinical Research and Development, LUX MED Group, 02-676 Warsaw, Poland
| | - Aneta Lewicka
- Military Centre of Preventive Medicine, 05-100 Nowy Dwór Mazowiecki, Poland;
| | - Zygmunt Pojda
- Department of Regenerative Medicine, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland;
| | - Łukasz Szymański
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, 05-552 Magdalenka, Poland
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5
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Wang Y, Morrissey JJ, Gupta P, Chauhan P, Pachynski RK, Harris PK, Chaudhuri A, Singamaneni S. Preservation of Proteins in Human Plasma through Metal-Organic Framework Encapsulation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:18598-18607. [PMID: 37015072 PMCID: PMC10484212 DOI: 10.1021/acsami.2c21192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Traditional cold chain systems of collection, transportation, and storage of biofluid specimens for eventual analysis pose a huge financial and environmental burden. These systems are impractical in pre-hospital and resource-limited settings, where refrigeration and electricity are not reliable or even available. Here, we develop an innovative technology using metal-organic frameworks (MOFs), a novel class of organic-inorganic hybrids with high thermal stability, as encapsulates for preserving the integrity of protein biomarkers in biofluids under ambient or non-refrigerated storage conditions. We encapsulate prostate-specific antigen (PSA) in whole patient plasma using hydrophilic zeolitic imidazolate framework-90 (ZIF-90) for preservation at 40 °C for 4 weeks and eventual on-demand reconstitution for antibody-based assays with recovery above 95% compared to storage at -20 °C. Without ZIF-90 encapsulation, only 10-30% of the PSA immunoactivity remained. Furthermore, we demonstrate encapsulation of multiple cancer biomarker proteins in whole patient plasma using ZIF-8 or ZIF-90 encapsulants for eventual on-demand reconstitution and analysis after 1 week at 40 °C. Overall, MOF encapsulation of patient biofluids is important as climate change may be affecting the stability and increase costs of maintaining biospecimen cold chain custody for the collection, transportation, and storage of biospecimens prior to analysis or for biobanking regardless of any countries' affluence.
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Affiliation(s)
- Yixuan Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130, United States
| | - Jeremiah J. Morrissey
- Department of Anesthesiology, Division of Clinical and Translational Research, Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
- Siteman Cancer Center, Barnes-Jewish Hospital and Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
| | - Prashant Gupta
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130, United States
| | - Pradeep Chauhan
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
| | - Russell K. Pachynski
- Siteman Cancer Center, Barnes-Jewish Hospital and Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
- Division of Oncology, Department of Medicine, Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
| | - Peter K. Harris
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
| | - Aadel Chaudhuri
- Siteman Cancer Center, Barnes-Jewish Hospital and Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
- Department of Biomedical Engineering, Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
- Department of Genetics, Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
- Department of Computer Science and Engineering, Washington University in St. Louis, St Louis, MO 63130, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130, United States
- Siteman Cancer Center, Barnes-Jewish Hospital and Washington University School of Medicine in St. Louis, St Louis, MO 63110, United States
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6
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Castro Mora MP, Palacio Varona J, Perez Riaño B, Laverde Cubides C, Rey-Rodriguez DV. Effectiveness of topical insulin for the treatment of surface corneal pathologies. ARCHIVOS DE LA SOCIEDAD ESPANOLA DE OFTALMOLOGIA 2023; 98:220-232. [PMID: 36871851 DOI: 10.1016/j.oftale.2023.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 01/26/2023] [Indexed: 03/07/2023]
Abstract
The Purpose is to identify, through a systematic literature review, the current evidence regarding the effectiveness of topical insulin treatment in ocular surface pathologies. A literature search was implemented in Medline (Pubmed), Embase and Web Of Science medical indexing databases by using keywords such as "insulin" AND "cornea" OR "corneal" OR "dry eye" in published papers in English or Spanish within the last eleven years (2011-2022). Nine papers were identified with 180 participants from the United States, Spain, Ireland, Canada, Portugal and Malaysia, with persistent refractory epithelial defects and secondary to vitrectomy, whose extension of the lesion was from 3,75mm2 to 65.47mm2. The preparation was dissolved with artificial tears and the insulin concentration ranged from 1 IU/ml to 100 IU/ml. In all cases, the resolution of the clinical picture was complete with a healing time from 2.5 days to 60.9 days, the latter being a secondary case to a difficult-to-control caustic burn. Topical insulin has been effective for the treatment of persistent epithelial defects. The intermediate action and low concentrations showed a shorter resolution time in neurotrophic ulcers and induced during vitreoretinal surgery.
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Affiliation(s)
| | | | - B Perez Riaño
- Universidad El Bosque, Bogotá, Cundinamarca, Colombia
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7
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Qi Z, Yan Z, Tan G, Jia T, Geng Y, Shao H, Kundu SC, Lu S. Silk Fibroin Microneedles for Transdermal Drug Delivery: Where Do We Stand and How Far Can We Proceed? Pharmaceutics 2023; 15:pharmaceutics15020355. [PMID: 36839676 PMCID: PMC9964088 DOI: 10.3390/pharmaceutics15020355] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 01/24/2023] Open
Abstract
Microneedles are a patient-friendly technique for delivering drugs to the site of action in place of traditional oral and injectable administration. Silk fibroin represents an interesting polymeric biomaterial because of its mechanical properties, thermal stability, biocompatibility and possibility of control via genetic engineering. This review focuses on the critical research progress of silk fibroin microneedles since their inception, analyzes in detail the structure and properties of silk fibroin, the types of silk fibroin microneedles, drug delivery applications and clinical trials, and summarizes the future development trend in this field. It also proposes the future research direction of silk fibroin microneedles, including increasing drug loading doses and enriching drug loading types as well as exploring silk fibroin microneedles with stimulation-responsive drug release functions. The safety and effectiveness of silk fibroin microneedles should be further verified in clinical trials at different stages.
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Affiliation(s)
- Zhenzhen Qi
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Zheng Yan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Guohongfang Tan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Tianshuo Jia
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Yiyu Geng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Huiyan Shao
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Subhas C. Kundu
- 3Bs Research Group, I3Bs Research Institute on Biomaterials, Biodegrabilities, and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Guimaraes, 4805-017 Barco, Portugal
| | - Shenzhou Lu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
- Correspondence: ; Tel.: +86-512-67061152
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8
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Li Y, Ju XJ, Fu H, Zhou CH, Gao Y, Wang J, Xie R, Wang W, Liu Z, Chu LY. Composite Separable Microneedles for Transdermal Delivery and Controlled Release of Salmon Calcitonin for Osteoporosis Therapy. ACS APPLIED MATERIALS & INTERFACES 2023; 15:638-650. [PMID: 36576723 DOI: 10.1021/acsami.2c19241] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A composite separable microneedles (MNs) system consisting of silk fibroin (SF) needle tips and hyaluronic acid (HA) base is developed for transdermal delivery of salmon calcitonin (sCT) for therapy of osteoporosis. Poly(ethylene glycol) (PEG) is used to modulate the conformation structure of SF to achieve controllable sustained release of sCT. The prepared MNs can effectively penetrate the skin stratum corneum. After application to the skin, the HA base is dissolved within 2 min, allowing these SF drug depots to be implanted into the skin for controllable sustained release of sCT. The release kinetics of sCT can be controlled by regulating the conformation of SF with PEG and the interaction between sCT peptide and SF proteins. Compared with traditional needle injection, delivery of sCT using optimized HA-PEG/SF MNs shows better trabecular bone repair for ovariectomized-induced osteoporosis in mice. The proposed MNs system provides a new noninjection strategy for therapy of osteoporosis.
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Affiliation(s)
- Yao Li
- School of Chemical Engineering, Sichuan University, Chengdu610065, China
| | - Xiao-Jie Ju
- School of Chemical Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, China
| | - Han Fu
- School of Chemical Engineering, Sichuan University, Chengdu610065, China
| | - Chang-Hai Zhou
- School of Chemical Engineering, Sichuan University, Chengdu610065, China
| | - Yi Gao
- West China Hospital of Stomatology, Sichuan University, Chengdu610041, China
| | - Jun Wang
- West China Hospital of Stomatology, Sichuan University, Chengdu610041, China
| | - Rui Xie
- School of Chemical Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, China
| | - Wei Wang
- School of Chemical Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, China
| | - Zhuang Liu
- School of Chemical Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, China
| | - Liang-Yin Chu
- School of Chemical Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu610065, China
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9
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Ray S, Puente A, Steinmetz NF, Pokorski JK. Recent advancements in single dose slow-release devices for prophylactic vaccines. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1832. [PMID: 35850120 PMCID: PMC9840709 DOI: 10.1002/wnan.1832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/31/2022] [Indexed: 01/31/2023]
Abstract
Single dose slow-release vaccines herald a new era in vaccine administration. An ideal device for slow-release vaccine delivery would be minimally invasive and self-administered, making these approaches an attractive alternative for mass vaccination programs, particularly during the time of a pandemic. In this review article, we discuss the latest advances in this field, specifically for prophylactic vaccines able to prevent infectious diseases. Recent studies have found that slow-release vaccines elicit better immune responses and often do not require cold chain transportation and storage, thus drastically reducing the cost, streamlining distribution, and improving efficacy. This promise has attracted significant attention, especially when poor patient compliance of the standard multidose vaccine regimes is considered. Single dose slow-release vaccines are the next generation of vaccine tools that could overcome most of the shortcomings of present vaccination programs and be the next platform technology to combat future pandemics. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Implantable Materials and Surgical Technologies > Nanomaterials and Implants Biology-Inspired Nanomaterials > Protein and Virus-Based Structures.
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Affiliation(s)
- Sayoni Ray
- Department of NanoEngineering, University of California-San Diego, La Jolla, California, USA
- Center for Nano-ImmunoEngineering, University of California-San Diego, La Jolla, California, USA
| | - Armando Puente
- Department of NanoEngineering, University of California-San Diego, La Jolla, California, USA
- Center for Nano-ImmunoEngineering, University of California-San Diego, La Jolla, California, USA
| | - Nicole F. Steinmetz
- Department of NanoEngineering, University of California-San Diego, La Jolla, California, USA
- Center for Nano-ImmunoEngineering, University of California-San Diego, La Jolla, California, USA
- Institute for Materials Discovery and Design, University of California-San Diego, La Jolla, California, USA
- Department of Bioengineering, University of California-San Diego, La Jolla, California, USA
- Department of Radiology, University of California-San Diego, La Jolla, California, USA
- Moores Cancer Center, University of California-San Diego, La Jolla, California, USA
| | - Jonathan K. Pokorski
- Department of NanoEngineering, University of California-San Diego, La Jolla, California, USA
- Center for Nano-ImmunoEngineering, University of California-San Diego, La Jolla, California, USA
- Institute for Materials Discovery and Design, University of California-San Diego, La Jolla, California, USA
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10
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Aptamers Enhance Oncolytic Viruses' Antitumor Efficacy. Pharmaceutics 2022; 15:pharmaceutics15010151. [PMID: 36678780 PMCID: PMC9864469 DOI: 10.3390/pharmaceutics15010151] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/27/2022] [Accepted: 12/30/2022] [Indexed: 01/04/2023] Open
Abstract
Oncolytic viruses are highly promising for cancer treatment because they target and lyse tumor cells. These genetically engineered vectors introduce therapeutic or immunostimulatory genes into the tumor. However, viral therapy is not always safe and effective. Several problems are related to oncolytic viruses' targeted delivery to the tumor and immune system neutralization in the bloodstream. Cryoprotection and preventing viral particles from aggregating during storage are other critical issues. Aptamers, short RNA, or DNA oligonucleotides may help to crawl through this bottleneck. They are not immunogenic, are easily synthesized, can be chemically modified, and are not very demanding in storage conditions. It is possible to select an aptamer that specifically binds to any target cell, oncolytic virus, or molecule using the SELEX technology. This review comprehensively highlights the most important research and methodological approaches related to oncolytic viruses and nucleic acid aptamers. Here, we also analyze possible future research directions for combining these two methodologies to improve the effectiveness of cancer virotherapy.
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11
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Guo T, Xiao J, Li L, Xu W, Yuan Y, Yin Y, Zhang X. rM2e-ΔPly protein immunization induces protection against influenza viruses and its co-infection with Streptococcus pneumoniae in mice. Mol Immunol 2022; 152:86-96. [DOI: 10.1016/j.molimm.2022.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 10/09/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
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12
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Wang H, Duan S, Chen Y, Liu H, Tian J, Wu F, Du Z, Tang L, Li Y, Ding S. Study on a Natural Silk Cocoon Membrane-Based Versatile and Stable Immunosensing Platform via Directional Immunoaffinity Recognition. ACS OMEGA 2022; 7:35297-35304. [PMID: 36211073 PMCID: PMC9535715 DOI: 10.1021/acsomega.2c04777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
The development of immunosensing assays for in vitro diagnostics has attracted great attention in recent years. Various substrate materials and immobilization methods of biomolecules were exploited for immunosensors, but their bioactivity and longevity have been facing serious challenges. To address this limitation, we investigated a natural silk cocoon membrane as immunosensing substrate material. By using its intrinsic properties, the target biomolecules were immobilized on the membrane through directional immunoaffinity recognition. The silk cocoon membrane-based immunosensor showed great potential for both qualitative and quantitative immunoassays, through naked-eye observation or analyzing the change in red color intensity, respectively. The immunosensor exhibited significant detection capability for anti-D (titer 1:1024) sensitized red blood cells. The colorimetric responses of concentrations ranged from 1 μg/mL to 1 ng/mL, and the detection limit for anti-D was 3.4 ng/mL. The immunosensor also showed excellent stability for the immobilized antibodies when stored at 4 and 25 °C; the bioactivity remained unchanged or slightly declined within 40 weeks. Even at 37 °C, the bioactivity began to decline after 12 weeks. This current work highlights the potential of using the natural silk cocoon membrane as a substrate for a versatile and thermally stable immunosensing platform for application in immunoassays.
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Affiliation(s)
- Hongmei Wang
- CAS
Key Lab of Bio-Medical Diagnostics, Suzhou
Institute of Biomedical Engineering and Technology, Chinese Academy
of Sciences. No. 88,
Keling Road, Suzhou, Jiangsu
Province 215163, China
- Jihua
Laboratory, Foshan 528200, China
| | - Shengbao Duan
- CAS
Key Lab of Bio-Medical Diagnostics, Suzhou
Institute of Biomedical Engineering and Technology, Chinese Academy
of Sciences. No. 88,
Keling Road, Suzhou, Jiangsu
Province 215163, China
- Jihua
Laboratory, Foshan 528200, China
| | - Yezhou Chen
- CAS
Key Lab of Bio-Medical Diagnostics, Suzhou
Institute of Biomedical Engineering and Technology, Chinese Academy
of Sciences. No. 88,
Keling Road, Suzhou, Jiangsu
Province 215163, China
- Jihua
Laboratory, Foshan 528200, China
| | - Huan Liu
- Suzhou
Guoke Sibeta Biotechnology Co., Ltd., Suzhou 215163, China
| | - Jingjing Tian
- CAS
Key Lab of Bio-Medical Diagnostics, Suzhou
Institute of Biomedical Engineering and Technology, Chinese Academy
of Sciences. No. 88,
Keling Road, Suzhou, Jiangsu
Province 215163, China
| | - Feiran Wu
- Jihua
Laboratory, Foshan 528200, China
| | - Ziqian Du
- Jihua
Laboratory, Foshan 528200, China
| | | | - Yong Li
- CAS
Key Lab of Bio-Medical Diagnostics, Suzhou
Institute of Biomedical Engineering and Technology, Chinese Academy
of Sciences. No. 88,
Keling Road, Suzhou, Jiangsu
Province 215163, China
- Jihua
Laboratory, Foshan 528200, China
| | - Shaohua Ding
- CAS
Key Lab of Bio-Medical Diagnostics, Suzhou
Institute of Biomedical Engineering and Technology, Chinese Academy
of Sciences. No. 88,
Keling Road, Suzhou, Jiangsu
Province 215163, China
- Jihua
Laboratory, Foshan 528200, China
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13
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Zhang Y, Hao H, Lin J, Ma Z, Li H, Nie Z, Cui Y, Guo Z, Zhang Y, Wang X, Tang R. Conformation-Stabilized Amorphous Nanocoating for Rational Design of Long-Term Thermostable Viral Vaccines. ACS APPLIED MATERIALS & INTERFACES 2022; 14:39873-39884. [PMID: 36018064 DOI: 10.1021/acsami.2c12065] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Despite the great potency of vaccines to combat infectious diseases, their global use is hindered by a lack of thermostability, which leads to a constant need for cold-chain storage. Here, aiming at long-term thermostability and eliminating cold-chain requirements of bioactive vaccines, we propose that efforts should focus on tailoring the conformational stability of vaccines. Accordingly, we design a nanocoating composed of histidine (His)-coordinated amorphous Zn and 2-methylimidazolate complex (His-aZn-mIM) on single nanoparticles of viral vaccines to introduce intramolecular coordinated linkage between viruses and the nanocoatings. The coordinated nanocoating enhances the rigidity of proteins and preserves the vaccine's activity. Importantly, integrating His into the original Zn-N coordinative environment symbiotically reinforces its tolerance to biological and hydrothermal solutions, resulting in the augmented thermostability following the Hofmeister effect. Thus, even after storage of His-aZn-mIM encapsulated Human adenovirus type 5 (Ad5@His-aZn-mIM) at 25 °C for 90 d, the potency loss of the coated Ad5 is less than 10%, while the native Ad5 becomes 100% ineffective within one month. Such a nanocoating gains thermostability by forming an ultrastable hydration shell, which prevents viral proteins from unfolding under the attack of hydration ions, providing a conformational stabilizer upon heat exposure. Our findings represent an easy-access biomimetic platform to address the long-term vaccine storage without the requirement of a cold chain.
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Affiliation(s)
- Ying Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou 310027, Zhejiang, China
- Sir Run Run Shaw Hospital, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China
| | - Haibin Hao
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Jiake Lin
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zaiqiang Ma
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Huixin Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zihao Nie
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yihao Cui
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zhengxi Guo
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yaqin Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xiaoyu Wang
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou 310027, Zhejiang, China
- Sir Run Run Shaw Hospital, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China
| | - Ruikang Tang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou 310027, Zhejiang, China
- Sir Run Run Shaw Hospital, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China
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14
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Stable Dried Catalase Particles Prepared by Electrospraying. NANOMATERIALS 2022; 12:nano12142484. [PMID: 35889708 PMCID: PMC9322511 DOI: 10.3390/nano12142484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/07/2022] [Accepted: 07/14/2022] [Indexed: 11/17/2022]
Abstract
Therapeutic proteins and peptides are clinically important, offering potency while reducing the potential for off-target effects. Research interest in developing therapeutic polypeptides has grown significantly during the last four decades. However, despite the growing research effort, maintaining the stability of polypeptides throughout their life cycle remains a challenge. Electrohydrodynamic (EHD) techniques have been widely explored for encapsulation and delivery of many biopharmaceuticals. In this work, we explored monoaxial electrospraying for encapsulation of bovine liver catalase, investigating the effects of the different components of the electrospraying solution on the integrity and bioactivity of the enzyme. The catalase was successfully encapsulated within polymeric particles made of polyvinylpyrrolidone (PVP), dextran, and polysucrose. The polysorbate 20 content within the electrospraying solution (50 mM citrate buffer, pH 5.4) affected the catalase loading—increasing the polysorbate 20 concentration to 500 μg/mL resulted in full protein encapsulation but did not prevent loss in activity. The addition of ethanol (20% v/v) to a fully aqueous solution improves the electrospraying process by reducing surface tension, without loss of catalase activity. The polymer type was shown to have the greatest impact on preserving catalase activity within the electrosprayed particles. When PVP was the carrier there was no loss in activity compared with fresh aqueous solutions of catalase. The optimum particles were obtained from a 20% w/v PVP or 30% w/v PVP-trehalose (1:1 w/w) solution. The addition of trehalose confers stability advantages to the catalase particles. When trehalose-PVP particles were stored at 5 °C, enzymatic activity was maintained over 3 months, whereas for the PVP-only analogue a 50% reduction in activity was seen. This demonstrates that processing catalase by monoaxial electrospraying can, under optimised conditions, result in stable polymeric particles with no loss of activity.
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15
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Shang Y, Li L, Zhang T, Luo Q, Yu Q, Zeng Z, Li L, Jia M, Tang G, Fan S, Lu Q, Zhang W, Xue Y, Wang H, Liu W, Wang H, Zhang R, Ding C, Shao H, Wen G. Quantitative regulation of the thermal stability of enveloped virus vaccines by surface charge engineering to prevent the self-aggregation of attachment glycoproteins. PLoS Pathog 2022; 18:e1010564. [PMID: 35679257 PMCID: PMC9182686 DOI: 10.1371/journal.ppat.1010564] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 05/01/2022] [Indexed: 11/18/2022] Open
Abstract
The development of thermostable vaccines can relieve the bottleneck of existing vaccines caused by thermal instability and subsequent poor efficacy, which is one of the predominant reasons for the millions of deaths caused by vaccine-preventable diseases. Research into the mechanism of viral thermostability may provide strategies for developing thermostable vaccines. Using Newcastle disease virus (NDV) as model, we identified the negative surface charge of attachment glycoprotein as a novel determinant of viral thermostability. It prevented the temperature-induced aggregation of glycoprotein and subsequent detachment from virion surface. Then structural stability of virion surface was improved and virus could bind to and infect cells efficiently after heat-treatment. Employing the approach of surface charge engineering, thermal stability of NDV and influenza A virus (IAV) vaccines was successfully improved. The increase in the level of vaccine thermal stability was determined by the value-added in the negative surface charge of the attachment glycoprotein. The engineered live and inactivated vaccines could be used efficiently after storage at 37°C for at least 10 and 60 days, respectively. Thus, our results revealed a novel surface-charge-mediated link between HN protein and NDV thermostability, which could be used to design thermal stable NDV and IAV vaccines rationally.
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Affiliation(s)
- Yu Shang
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Li Li
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Tengfei Zhang
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Qingping Luo
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Qingzhong Yu
- US National Poultry Research Center, Agricultural Research Services, United States Department of Agriculture, Athens, Georgia, United States of America
| | - Zhe Zeng
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Lintao Li
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Miaomiao Jia
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Guoyi Tang
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Sanlin Fan
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Qin Lu
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Wenting Zhang
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Yuhan Xue
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Hongling Wang
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Wei Liu
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Hongcai Wang
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Rongrong Zhang
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
| | - Chan Ding
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Huabin Shao
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
- Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Wuhan, China
| | - Guoyuan Wen
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Wuhan, China
- Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Wuhan, China
- * E-mail:
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16
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Ghaemmaghamian Z, Zarghami R, Walker G, O'Reilly E, Ziaee A. Stabilizing vaccines via drying: Quality by design considerations. Adv Drug Deliv Rev 2022; 187:114313. [PMID: 35597307 DOI: 10.1016/j.addr.2022.114313] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/26/2022] [Accepted: 04/26/2022] [Indexed: 12/12/2022]
Abstract
Pandemics and epidemics are continually challenging human beings' health and imposing major stresses on the societies particularly over the last few decades, when their frequency has increased significantly. Protecting humans from multiple diseases is best achieved through vaccination. However, vaccines thermal instability has always been a hurdle in their widespread application, especially in less developed countries. Furthermore, insufficient vaccine processing capacity is also a major challenge for global vaccination programs. Continuous drying of vaccine formulations is one of the potential solutions to these challenges. This review highlights the challenges on implementing the continuous drying techniques for drying vaccines. The conventional drying methods, emerging technologies and their adaptation by biopharmaceutical industry are investigated considering the patented technologies for drying of vaccines. Moreover, the current progress in applying Quality by Design (QbD) in each of the drying techniques considering the critical quality attributes (CQAs), critical process parameters (CPPs) are comprehensively reviewed. An expert advice is presented on the required actions to be taken within the biopharmaceutical industry to move towards continuous stabilization of vaccines in the realm of QbD.
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Affiliation(s)
- Zahra Ghaemmaghamian
- Pharmaceutical Engineering Research Laboratory, Pharmaceutical Process Centers of Excellence, School of Chemical Engineering, University of Tehran, Tehran, Iran
| | - Reza Zarghami
- Pharmaceutical Engineering Research Laboratory, Pharmaceutical Process Centers of Excellence, School of Chemical Engineering, University of Tehran, Tehran, Iran
| | - Gavin Walker
- SSPC, The SFI Research Centre of Pharmaceuticals, Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick, Ireland
| | - Emmet O'Reilly
- SSPC, The SFI Research Centre of Pharmaceuticals, Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick, Ireland
| | - Ahmad Ziaee
- SSPC, The SFI Research Centre of Pharmaceuticals, Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick, Ireland.
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17
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Singh R, White JF, de Vries M, Beddome G, Dai M, Bean AG, Mulet X, Layton D, Doherty CM. Biomimetic metal-organic frameworks as protective scaffolds for live-virus encapsulation and vaccine stabilization. Acta Biomater 2022; 142:320-331. [PMID: 35134566 DOI: 10.1016/j.actbio.2022.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 01/31/2022] [Accepted: 02/02/2022] [Indexed: 12/20/2022]
Abstract
The invaluable health, economic and social impacts of vaccination are hard to exaggerate. The ability to stabilize vaccines is urgently required for their equitable distribution without the dependence on the 'cold-chain' logistics. Herein, for the first time we report biomimetic-mineralization of live-viral vaccines using metal-organic frameworks (MOFs) to enhance their storage stability from days to months. Applying ZIF-8 and aluminium fumarate (Alfum), the Newcastle Disease Virus (NDV) V4 strain and Influenza A WSN strain were encapsulated with remarkable retention of their viral titre. The ZIF-8@NDV, ZIF-8@WSN and Alfum@WSN composites were validated for live-virus recovery using a tissue culture infectious dose (TCID50) assay. With the objective of long-term stabilization, we developed a novel, trehalose (T) and skim milk (SM) stabilized, freeze-dried MOF@Vaccine composite, ZIF-8@NDV+T/SM. The thermal stability of this composite was investigated and compared with the control NDV and non-encapsulated, freeze-dried NDV+T/SM composite at 4 °C, RT, and 37 °C over a period of 12 weeks. We demonstrate the fragility of the control NDV vaccine which lost all viability at RT and 37°C by 12 and 4 weeks, respectively. Comparing the freeze-dried counterparts, the MOF encapsulated ZIF-8@NDV+T/SM demonstrated significant enhancement in stability of the NDV+T/SM composite especially at RT and 37 °C upto 12 weeks. STATEMENT OF SIGNIFICANCE: Vaccination is undoubtedly one of the most effective medical interventions, saving millions of lives each year. However, the requirement of 'cold-chain' logistics is a major impediment to widespread immunization. Live viral vaccines (LVVs) are widely used vaccine types with proven efficacy and low cost. Nonetheless, their complex composition increases their susceptability to thermal stress. Several LVV thermostabilization approaches have been investigated, including their complex engineering and the facile addition of stabilizers. Still, the lack of a universal approach urgently requires finding a stabilization technique especially when additives alone may not be sufficient. Herein, we demonstrate MOF biomimetic-mineralization technology to encapsulate LVVs developing an optimised composite which significantly preserves vaccines without refrigeration for extended periods of time.
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Affiliation(s)
- Ruhani Singh
- CSIRO Manufacturing, Private Bag 10, Clayton South, Victoria 3169, Australia.
| | - Jacinta F White
- CSIRO Manufacturing, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Malisja de Vries
- CSIRO Manufacturing, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Gary Beddome
- CSIRO Health & Biosecurity, Australian Centre for Disease Preparedness, Geelong, Victoria 3220, Australia
| | - Meiling Dai
- CSIRO Health & Biosecurity, Australian Centre for Disease Preparedness, Geelong, Victoria 3220, Australia
| | - Andrew G Bean
- CSIRO Health & Biosecurity, Australian Centre for Disease Preparedness, Geelong, Victoria 3220, Australia
| | - Xavier Mulet
- CSIRO Manufacturing, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Daniel Layton
- CSIRO Health & Biosecurity, Australian Centre for Disease Preparedness, Geelong, Victoria 3220, Australia.
| | - Cara M Doherty
- CSIRO Manufacturing, Private Bag 10, Clayton South, Victoria 3169, Australia.
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18
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Nyaruaba R, Hong W, Li X, Yang H, Wei H. Long-Term Preservation of SARS-CoV-2 RNA in Silk for Downstream RT-PCR Tests. Anal Chem 2022; 94:4522-4530. [PMID: 35235308 PMCID: PMC8903213 DOI: 10.1021/acs.analchem.2c00169] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 02/22/2022] [Indexed: 11/29/2022]
Abstract
Positive controls made of viral gene components are essential to validate the performance of diagnostic assays for pathogens like severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, most of them are target-specific, limiting their application spectrum when validating assays beyond their specified targets. The use of an inactivated whole-virus RNA reference standard could be ideal, but RNA is a labile molecule that needs cold chain storage and transportation to preserve its integrity and activity. The cold chain process stretches the already dwindling storage capacities, incurs huge costs, and limits the distribution of reference materials to low-resource settings. To circumvent these issues, we developed an inactivated whole-virus SARS-CoV-2 RNA reference standard and studied its stability in silk fibroin matrices, i.e., silk solution (SS) and silk film (SF). Compared to preservation in nuclease-free water (ddH2O) and SS, SF was more stable and could preserve the SARS-CoV-2 RNA reference standard at room temperature for over 21 weeks (∼6 months) as determined by reverse transcription polymerase chain reaction (RT-PCR). The preserved RNA reference standard in SF was able to assess the limits of detection of four commercial SARS-CoV-2 RT-PCR assays. In addition, SF is compatible with RT-PCR reactions and can be used to preserve a reaction-ready primer and probe mix for RT-PCR at ambient temperatures without affecting their activity. Taken together, these results offer extensive flexibility and a simpler mechanism of preserving RNA reference materials for a long time at ambient temperatures of ≥25 °C, with the possibility of eliminating cold chains during storage and transportation.
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Affiliation(s)
- Raphael Nyaruaba
- CAS
Key Laboratory of Special Pathogens and Biosafety, Centre for Biosafety
Mega-Science, Wuhan Institute of Virology,
Chinese Academy of Sciences, Wuhan 430071, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
- Sino-Africa
Joint Research Center, 6200-00200 Nairobi, Kenya
| | - Wei Hong
- CAS
Key Laboratory of Special Pathogens and Biosafety, Centre for Biosafety
Mega-Science, Wuhan Institute of Virology,
Chinese Academy of Sciences, Wuhan 430071, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohong Li
- CAS
Key Laboratory of Special Pathogens and Biosafety, Centre for Biosafety
Mega-Science, Wuhan Institute of Virology,
Chinese Academy of Sciences, Wuhan 430071, China
| | - Hang Yang
- CAS
Key Laboratory of Special Pathogens and Biosafety, Centre for Biosafety
Mega-Science, Wuhan Institute of Virology,
Chinese Academy of Sciences, Wuhan 430071, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongping Wei
- CAS
Key Laboratory of Special Pathogens and Biosafety, Centre for Biosafety
Mega-Science, Wuhan Institute of Virology,
Chinese Academy of Sciences, Wuhan 430071, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
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19
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Xu H, Bhowmik T, Gong K, Huynh TNA, Williams RO, Cui Z. Thin-film freeze-drying of a bivalent Norovirus vaccine while maintaining the potency of both antigens. Int J Pharm 2021; 609:121126. [PMID: 34560208 DOI: 10.1016/j.ijpharm.2021.121126] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 09/17/2021] [Accepted: 09/18/2021] [Indexed: 10/20/2022]
Abstract
A bivalent Norovirus vaccine candidate has been developed that contains Norovirus strain GI.1 Norwalk-virus like particles (VLP) and strain GII.4 Consensus VLP adsorbed on aluminum (oxy)hydroxide. The Norwalk and Consensus antigens have different stability profiles, making it challenging to prepare a dry powder form of the Norovirus vaccine while maintaining the potency of both antigens. In the present study, we tested the feasibility of converting the vaccine from a liquid suspension to dry powders by thin-film freeze-drying (TFFD). With the proper amount of trehalose and/or sucrose as cryoprotectant (i.e. sucrose alone at 4.55% or 5.55%, w/v, or trehalose at 3-4% with 0.55% of sucrose), TFFD can be applied to successfully convert the Norovirus vaccine candidate into dry powders without causing antigen loss or particle aggregation, while maintaining the relative potency of both antigens within a specified acceptable range. In an accelerated stability study, the potency of the antigens was also maintained in the specified acceptable range after the dry powders prepared by TFFD in the presence of 5.55% (w/v) of sucrose were stored for eight weeks at 40 °C, 75% relative humidity. It is concluded that it is feasible to apply TFFD to convert the Norovirus vaccine from a liquid suspension to stable dry powders.
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Affiliation(s)
- Haiyue Xu
- The University of Texas at Austin, College of Pharmacy, Division of Molecular Pharmaceutics and Drug Delivery, Austin, TX, USA
| | | | | | - Thu Ngoc Anh Huynh
- The University of Texas at Austin, College of Pharmacy, Division of Molecular Pharmaceutics and Drug Delivery, Austin, TX, USA
| | - Robert O Williams
- The University of Texas at Austin, College of Pharmacy, Division of Molecular Pharmaceutics and Drug Delivery, Austin, TX, USA
| | - Zhengrong Cui
- The University of Texas at Austin, College of Pharmacy, Division of Molecular Pharmaceutics and Drug Delivery, Austin, TX, USA.
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20
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Zhang G, Fu X, Sun H, Zhang P, Zhai S, Hao J, Cui J, Hu M. Poly(ethylene glycol)-Mediated Assembly of Vaccine Particles to Improve Stability and Immunogenicity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:13978-13989. [PMID: 33749241 DOI: 10.1021/acsami.1c00706] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We report the one-step assembly of vaccine particles by encapsulating ovalbumin (OVA) and cytosine-phosphate-guanine oligodeoxynucleotides (CpG) into poly(ethylene glycol) (PEG)-mediated zeolitic imidazolate framework-8 nanoparticles (OVA-CpG@ZIF-8 NPs), where PEG improves the stability and dispersity of ZIF-8 NPs and the NPs protect the encapsulated OVA and CpG to circumvent the cold chain issue. Compared with free OVA and OVA-encapsulated ZIF-8 (OVA@ZIF-8) NPs, OVA-CpG@ZIF-8 NPs can enhance antigen uptake, cross-presentation, dendritic cell (DC) maturation, production of specific antibody and cytokines, and CD4+ T and CD8+ T cell activation. More importantly, the vaccine particles retain their bioactivity against enzymatic degradation, elevated temperatures, and long-term storage at ambient temperature. The study highlights the importance of PEG-mediated ZIF-8 NPs as a vaccine delivery system for the promising application of effective and cold chain-independent vaccination against diseases.
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Affiliation(s)
- Guiqiang Zhang
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Xiao Fu
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Haifeng Sun
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Peiyu Zhang
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Shumei Zhai
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Jiwei Cui
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China
- Advanced Medical Research Institute, Shandong University, Jinan, Shandong 250012, China
| | - Ming Hu
- School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
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21
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Zuo XX, Zhao YH, Zhou MX, Deng BH, Hu LG, Lv F, Lu Y, Hou JB. Live vaccine preserved at room temperature: Preparation and characterization of a freeze-dried classical swine fever virus vaccine. Vaccine 2020; 38:8371-8378. [PMID: 33199076 DOI: 10.1016/j.vaccine.2020.10.093] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 10/19/2020] [Accepted: 10/31/2020] [Indexed: 11/29/2022]
Abstract
The heat-stable live-attenuated classical swine fever virus (CSFV) vaccine is an urgent need in many countries of Asia, Europe and Latin America. In this study, the thermostability of lyophilized live-attenuated CSFV vaccine formulations were investigated using accelerated stability at 37 °C for 10 days. The freeze-dried heat-stable formulation ST16, containing excipient combinations of trehalose, glycine, thiourea and phosphate buffer shows the superior thermostability. Moreover, the lyophilized vaccine with formula ST16 kept loss of viral activity less than 0.5 log10 during 24 months at storage temperatures of 2-8 °C. In thermal study, ST16 stabilized the vaccine within 1.0 log10 loss after storage at up to 25 °C for 6 months and room temperature for 7 months. Even under the harshest storage conditions of 37 °C for 25 days and 45 °C for 2 weeks, the virus titer dropped less than 1.0 log10 using ST16. Besides, it is notable that ST16 excluded gelatin and exogenous proteins, which might cause allergic reactions, thus avoiding immune side effects. The vaccine formulated ST16 proved to be safe and effective when immunized to piglets in vivo. The characteristics of dried vaccines were analyzed by X-ray powder diffraction, residual water measurements, differential scanning calorimetry and it was found that vaccine antigen were preserved in an amorphous matrix with high glass transition temperature above 60 °C and low residual water content below 2%, which made the vaccine more stable during storage.
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Affiliation(s)
- Xiao-Xin Zuo
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yan-Hong Zhao
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Ming-Xu Zhou
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Bi-Hua Deng
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Lai-Gen Hu
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Fang Lv
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Yu Lu
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Nanjing 210014, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou 225009, China; School of Pharmacy, Jiangsu University, Zhenjiang 212013, China.
| | - Ji-Bo Hou
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Nanjing 210014, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou 225009, China
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22
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Roth G, Gale EC, Alcántara-Hernández M, Luo W, Axpe E, Verma R, Yin Q, Yu AC, Lopez Hernandez H, Maikawa CL, Smith AAA, Davis MM, Pulendran B, Idoyaga J, Appel EA. Injectable Hydrogels for Sustained Codelivery of Subunit Vaccines Enhance Humoral Immunity. ACS CENTRAL SCIENCE 2020; 6:1800-1812. [PMID: 33145416 PMCID: PMC7596866 DOI: 10.1021/acscentsci.0c00732] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Indexed: 05/15/2023]
Abstract
Vaccines aim to elicit a robust, yet targeted, immune response. Failure of a vaccine to elicit such a response arises in part from inappropriate temporal control over antigen and adjuvant presentation to the immune system. In this work, we sought to exploit the immune system's natural response to extended pathogen exposure during infection by designing an easily administered slow-delivery vaccine platform. We utilized an injectable and self-healing polymer-nanoparticle (PNP) hydrogel platform to prolong the codelivery of vaccine components to the immune system. We demonstrated that these hydrogels exhibit unique delivery characteristics, whereby physicochemically distinct compounds (such as antigen and adjuvant) could be codelivered over the course of weeks. When administered in mice, hydrogel-based sustained vaccine exposure enhanced the magnitude, duration, and quality of the humoral immune response compared to standard PBS bolus administration of the same model vaccine. We report that the creation of a local inflammatory niche within the hydrogel, coupled with sustained exposure of vaccine cargo, enhanced the magnitude and duration of germinal center responses in the lymph nodes. This strengthened germinal center response promoted greater antibody affinity maturation, resulting in a more than 1000-fold increase in antigen-specific antibody affinity in comparison to bolus immunization. In summary, this work introduces a simple and effective vaccine delivery platform that increases the potency and durability of subunit vaccines.
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Affiliation(s)
- Gillie
A. Roth
- Department
of Bioengineering, Stanford University, Stanford, California 94305, United States
| | - Emily C. Gale
- Department
of Biochemistry, Stanford University School
of Medicine, Stanford, California 94305, United States
| | - Marcela Alcántara-Hernández
- Department
of Microbiology & Immunology, Stanford
University School of Medicine, Stanford, California 94305, United States
- Program
in Immunology, Stanford University School
of Medicine, Stanford, California 94305, United States
| | - Wei Luo
- Institute
for Immunity, Transplantation & Infection, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Eneko Axpe
- Department
of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
| | - Rohit Verma
- Institute
for Immunity, Transplantation & Infection, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Qian Yin
- Institute
for Immunity, Transplantation & Infection, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Anthony C. Yu
- Department
of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
| | - Hector Lopez Hernandez
- Department
of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
| | - Caitlin L. Maikawa
- Department
of Bioengineering, Stanford University, Stanford, California 94305, United States
| | - Anton A. A. Smith
- Department
of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
| | - Mark M. Davis
- Department
of Microbiology & Immunology, Stanford
University School of Medicine, Stanford, California 94305, United States
- Program
in Immunology, Stanford University School
of Medicine, Stanford, California 94305, United States
- Institute
for Immunity, Transplantation & Infection, Stanford University School of Medicine, Stanford, California 94305, United States
- The
Howard Hughes Medical Institute, Stanford
University School of Medicine, Stanford, California 94305, United States
| | - Bali Pulendran
- Department
of Microbiology & Immunology, Stanford
University School of Medicine, Stanford, California 94305, United States
- Program
in Immunology, Stanford University School
of Medicine, Stanford, California 94305, United States
- Institute
for Immunity, Transplantation & Infection, Stanford University School of Medicine, Stanford, California 94305, United States
- Department
of Pathology, Stanford University School
of Medicine, Stanford, California 94305, United States
- ChEM-H
Institute, Stanford University, Stanford, California 94305, United States
| | - Juliana Idoyaga
- Department
of Microbiology & Immunology, Stanford
University School of Medicine, Stanford, California 94305, United States
- Program
in Immunology, Stanford University School
of Medicine, Stanford, California 94305, United States
- Institute
for Immunity, Transplantation & Infection, Stanford University School of Medicine, Stanford, California 94305, United States
- ChEM-H
Institute, Stanford University, Stanford, California 94305, United States
| | - Eric A. Appel
- Department
of Bioengineering, Stanford University, Stanford, California 94305, United States
- Institute
for Immunity, Transplantation & Infection, Stanford University School of Medicine, Stanford, California 94305, United States
- Department
of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
- ChEM-H
Institute, Stanford University, Stanford, California 94305, United States
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23
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Moreira A, Lawson D, Onyekuru L, Dziemidowicz K, Angkawinitwong U, Costa PF, Radacsi N, Williams GR. Protein encapsulation by electrospinning and electrospraying. J Control Release 2020; 329:1172-1197. [PMID: 33127450 DOI: 10.1016/j.jconrel.2020.10.046] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/20/2020] [Accepted: 10/22/2020] [Indexed: 12/24/2022]
Abstract
Given the increasing interest in the use of peptide- and protein-based agents in therapeutic strategies, it is fundamental to develop delivery systems capable of preserving the biological activity of these molecules upon administration, and which can provide tuneable release profiles. Electrohydrodynamic (EHD) techniques, encompassing electrospinning and electrospraying, allow the generation of fibres and particles with high surface area-to-volume ratios, versatile architectures, and highly controllable release profiles. This review is focused on exploring the potential of different EHD methods (including blend, emulsion, and co-/multi-axial electrospinning and electrospraying) for the development of peptide and protein delivery systems. An overview of the principles of each technique is first presented, followed by a survey of the literature on the encapsulation of enzymes, growth factors, antibodies, hormones, and vaccine antigens using EHD approaches. The possibility for localised delivery using stimuli-responsive systems is also explored. Finally, the advantages and challenges with each EHD method are summarised, and the necessary steps for clinical translation and scaled-up production of electrospun and electrosprayed protein delivery systems are discussed.
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Affiliation(s)
| | - Dan Lawson
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, UK
| | - Lesley Onyekuru
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Karolina Dziemidowicz
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Ukrit Angkawinitwong
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Pedro F Costa
- BIOFABICS, Rua Alfredo Allen 455, 4200-135 Porto, Portugal.
| | - Norbert Radacsi
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, UK.
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK.
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24
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Xiong R, Luan J, Kang S, Ye C, Singamaneni S, Tsukruk VV. Biopolymeric photonic structures: design, fabrication, and emerging applications. Chem Soc Rev 2020; 49:983-1031. [PMID: 31960001 DOI: 10.1039/c8cs01007b] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Biological photonic structures can precisely control light propagation, scattering, and emission via hierarchical structures and diverse chemistry, enabling biophotonic applications for transparency, camouflaging, protection, mimicking and signaling. Corresponding natural polymers are promising building blocks for constructing synthetic multifunctional photonic structures owing to their renewability, biocompatibility, mechanical robustness, ambient processing conditions, and diverse surface chemistry. In this review, we provide a summary of the light phenomena in biophotonic structures found in nature, the selection of corresponding biopolymers for synthetic photonic structures, the fabrication strategies for flexible photonics, and corresponding emerging photonic-related applications. We introduce various photonic structures, including multi-layered, opal, and chiral structures, as well as photonic networks in contrast to traditionally considered light absorption and structural photonics. Next, we summarize the bottom-up and top-down fabrication approaches and physical properties of organized biopolymers and highlight the advantages of biopolymers as building blocks for realizing unique bioenabled photonic structures. Furthermore, we consider the integration of synthetic optically active nanocomponents into organized hierarchical biopolymer frameworks for added optical functionalities, such as enhanced iridescence and chiral photoluminescence. Finally, we present an outlook on current trends in biophotonic materials design and fabrication, including current issues, critical needs, as well as promising emerging photonic applications.
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Affiliation(s)
- Rui Xiong
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA.
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25
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Chouhan D, Mandal BB. Silk biomaterials in wound healing and skin regeneration therapeutics: From bench to bedside. Acta Biomater 2020; 103:24-51. [PMID: 31805409 DOI: 10.1016/j.actbio.2019.11.050] [Citation(s) in RCA: 162] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 02/08/2023]
Abstract
Silk biomaterials are known for biomedical and tissue engineering applications including drug delivery and implantable devices owing to their biocompatible and a wide range of ideal physico-chemical properties. Herein, we present a critical overview of the progress of silk-based matrices in skin regeneration therapeutics with an emphasis on recent innovations and scientific findings. Beginning with a brief description of numerous varieties of silks, the review summarizes our current understanding of the biological properties of silk that help in the wound healing process. Various silk varieties such as silkworm silk fibroin, silk sericin, native spider silk and recombinant silk materials have been explored for cutaneous wound healing applications from the past few decades. With an aim to harness the regenerative properties of silk, numerous strategies have been applied to develop functional bioactive wound dressings and viable bio-artificial skin grafts in recent times. The review examines multiple inherent properties of silk that aid in the critical events of the healing process such as cell migration, cell proliferation, angiogenesis, and re-epithelialization. A detailed insight into the progress of silk-based cellular skin grafts is also provided that discusses various co-culture strategies and development of bilayer and tri-layer human skin equivalent under in vitro conditions. In addition, functionalized silk matrices loaded with bioactive molecules and antibacterial compounds are discussed, which have shown great potential in treating hard-to-heal wounds. Finally, clinical studies performed using silk-based translational products are reviewed that validate their regenerative properties and future applications in this area. STATEMENT OF SIGNIFICANCE: The review article discusses the recent advances in silk-based technologies for wound healing applications, covering various types of silk biomaterials and their properties suitable for wound repair and regeneration. The article demonstrates the progress of silk-based matrices with an update on the patented technologies and clinical advancements over the years. The rationale behind this review is to highlight numerous properties of silk biomaterials that aid in all the critical events of the wound healing process towards skin regeneration. Functionalization strategies to fabricate silk dressings containing bioactive molecules and antimicrobial compounds for drug delivery to the wound bed are discussed. In addition, a separate section describes the approaches taken to generate living human skin equivalent that have recently contributed in the field of skin tissue engineering.
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26
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Price DN, Kunda NK, Ellis R, Muttil P. Design and Optimization of a Temperature-Stable Dry Powder BCG Vaccine. Pharm Res 2019; 37:11. [PMID: 31873825 DOI: 10.1007/s11095-019-2739-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 11/24/2019] [Indexed: 12/22/2022]
Abstract
PURPOSE Loss of vaccine potency due to extreme temperature exposure during storage and transport remains a significant obstacle to the success of many vaccines, including the Bacille Calmette-Guérin (BCG) vaccine, the only vaccine available against Mycobacterium tuberculosis. BCG is a live, attenuated vaccine requiring refrigerated storage for viability. In this study, we formulated a temperature-stable BCG dry powder using the spray drying technique. METHODS We employed a factorial design to optimize our formulation of stabilizing excipients that included L-leucine, bovine serum albumin, polyvinylpyrrolidone, mannitol, and trehalose. Powders were characterized for their particle size, yield, water retention and uptake, glass transition temperature, and aerosol performance. Three optimal powder carrier mixtures were selected from the factorial design for BCG incorporation based on their stability-promoting and powder flow characteristics. Vaccine powders were also assessed for BCG viability and in vivo immunogenicity after long-term storage. RESULTS Live BCG was successfully spray-dried using the optimized carriers. Dry powder BCG showed no loss in viability (25°C, up to 60% relative humidity; RH) and ~2-log loss in viability (40°C, 75% RH) after one year of storage. The aerodynamic size of the powders was in the respirable range. Further, when healthy mice were immunized intradermally with reconstituted BCG powders (storage for 2 years), the vaccine retained its immunogenicity. CONCLUSION We developed a spray-dried BCG vaccine that was viable and antigenic after long-term storage. To our knowledge, this is a first study to show room temperature stability of live BCG vaccine without any loss in viability for 12 months.
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Affiliation(s)
- Dominique N Price
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Health Sciences Center, Albuquerque, New Mexico, 87131, USA.,Biomedical Sciences Graduate Program, University of New Mexico, Health Sciences Center, Albuquerque, New Mexico, 87131, USA
| | - Nitesh K Kunda
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Health Sciences Center, Albuquerque, New Mexico, 87131, USA.,Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Jamaica, New York, 11439, USA
| | - Rajaun Ellis
- Health Sciences Center, University of New Mexico, Albuquerque, New Mexico, 87131, USA.,Nova Southeastern University, Fort Lauderdale, Florida, 33314, USA
| | - Pavan Muttil
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Health Sciences Center, Albuquerque, New Mexico, 87131, USA.
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27
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Jackman SL, Chen CH, Chettih SN, Neufeld SQ, Drew IR, Agba CK, Flaquer I, Stefano AN, Kennedy TJ, Belinsky JE, Roberston K, Beron CC, Sabatini BL, Harvey CD, Regehr WG. Silk Fibroin Films Facilitate Single-Step Targeted Expression of Optogenetic Proteins. Cell Rep 2019; 22:3351-3361. [PMID: 29562189 PMCID: PMC5894120 DOI: 10.1016/j.celrep.2018.02.081] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/07/2018] [Accepted: 02/21/2018] [Indexed: 01/08/2023] Open
Abstract
Optical methods of interrogating neural circuits have emerged as powerful tools for understanding how the brain drives behaviors. Optogenetic proteins are widely used to control neuronal activity, while genetically encoded fluorescent reporters are used to monitor activity. These proteins are often expressed by injecting viruses, which frequently leads to inconsistent experiments due to misalignment of expression and optical components. Here, we describe how silk fibroin films simplify optogenetic experiments by providing targeted delivery of viruses. Films composed of silk fibroin and virus are applied to the surface of implantable optical components. After surgery, silk releases the virus to transduce nearby cells and provide localized expression around optical fibers and endoscopes. Silk films can also be used to express genetically encoded sensors in large cortical regions by using cranial windows coated with a silk/virus mixture. The ease of use and improved performance provided by silk make this a promising approach for optogenetic studies.
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Affiliation(s)
- Skyler L Jackman
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Christopher H Chen
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Selmaan N Chettih
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Shay Q Neufeld
- Department of Neurobiology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Iain R Drew
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Chimuanya K Agba
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Isabella Flaquer
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Alexis N Stefano
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Thomas J Kennedy
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Justine E Belinsky
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Keiramarie Roberston
- Department of Neurobiology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Celia C Beron
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Bernardo L Sabatini
- Department of Neurobiology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA
| | | | - Wade G Regehr
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.
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28
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Cubayachi C, Lemos CN, Pereira F, Dias K, Herculano RD, de Freitas O, Lopez RF. Silk fibroin films stabilizes and releases bioactive insulin for the treatment of corneal wounds. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.06.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Silk: A Promising Biomaterial Opening New Vistas Towards Affordable Healthcare Solutions. J Indian Inst Sci 2019. [DOI: 10.1007/s41745-019-00114-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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30
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Roduit B, Luyet CA, Hartmann M, Folly P, Sarbach A, Dejeaifve A, Dobson R, Schroeter N, Vorlet O, Dabros M, Baltensperger R. Continuous Monitoring of Shelf Lives of Materials by Application of Data Loggers with Implemented Kinetic Parameters. Molecules 2019; 24:molecules24122217. [PMID: 31200557 PMCID: PMC6631491 DOI: 10.3390/molecules24122217] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/09/2019] [Accepted: 06/11/2019] [Indexed: 11/29/2022] Open
Abstract
The evaluation of the shelf life of, for example, food, pharmaceutical materials, polymers, and energetic materials at room or daily climate fluctuation temperatures requires kinetic analysis in temperature ranges which are as similar as possible to those at which the products will be stored or transported in. A comparison of the results of the evaluation of the shelf life of a propellant and a vaccine calculated by advanced kinetics and simplified 0th and 1st order kinetic models is presented. The obtained simulations show that the application of simplified kinetics or the commonly used mean kinetic temperature approach may result in an imprecise estimation of the shelf life. The implementation of the kinetic parameters obtained from advanced kinetic analyses into programmable data loggers allows the continuous online evaluation and display on a smartphone of the current extent of the deterioration of materials. The proposed approach is universal and can be used for any goods, any methods of shelf life determination, and any type of data loggers. Presented in this study, the continuous evaluation of the shelf life of perishable goods based on the Internet of Things (IoT) paradigm helps in the optimal storage/shipment and results in a significant decrease of waste.
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Affiliation(s)
| | | | | | - Patrick Folly
- armasuisse, Science and Technology Centre, 3602 Thun, Switzerland.
| | | | - Alain Dejeaifve
- PB Clermont EURENCO Group, Rue de Clermont, 176-4480 Engis, Belgium.
| | - Rowan Dobson
- PB Clermont EURENCO Group, Rue de Clermont, 176-4480 Engis, Belgium.
| | - Nicolas Schroeter
- School of Engineering and Architecture of Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Bd de Pérolles 80, 1700 Fribourg, Switzerland.
| | - Olivier Vorlet
- School of Engineering and Architecture of Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Bd de Pérolles 80, 1700 Fribourg, Switzerland.
| | - Michal Dabros
- School of Engineering and Architecture of Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Bd de Pérolles 80, 1700 Fribourg, Switzerland.
| | - Richard Baltensperger
- School of Engineering and Architecture of Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Bd de Pérolles 80, 1700 Fribourg, Switzerland.
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31
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Dumpa N, Goel K, Guo Y, McFall H, Pillai AR, Shukla A, Repka MA, Murthy SN. Stability of Vaccines. AAPS PharmSciTech 2019; 20:42. [PMID: 30610415 DOI: 10.1208/s12249-018-1254-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 10/03/2018] [Indexed: 12/17/2022] Open
Abstract
Vaccines are considered the most economical and effective preventive measure against most deadly infectious diseases. Vaccines help protect around three million lives every year, but hundreds of thousands of lives are lost due to the instability of vaccines. This review discusses the various types of instability observed, while manufacturing, storing, and distributing vaccines. It describes the specific stability problems associated with each type of vaccine. This review also discusses the various measures adopted to overcome these instability problems. Vaccines are classified based on their components, and this review discusses how these preventive measures relate to each type of vaccine. This review also includes certain case studies that illustrate various approaches to improve vaccine stability. Last, this review provides insight on prospective methods for developing more stable vaccines.
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32
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Heard BR, Miller SA. Potential Changes in Greenhouse Gas Emissions from Refrigerated Supply Chain Introduction in a Developing Food System. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:251-260. [PMID: 30565938 DOI: 10.1021/acs.est.8b05322] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Refrigeration transforms developing food systems, changing the dynamics of production and consumption. This study models the introduction of an integrated refrigerated supply chain, or "cold chain," into sub-Saharan Africa and estimates changes in preretail greenhouse gas (GHG) emissions if the cold chain develops similarly to North America or Europe. Refrigeration presents an important and understudied trade-off: the ability to reduce food losses and their associated environmental impacts, but increasing energy use and creating GHG emissions. It is estimated that postharvest emissions added from cold chain operation are larger than food loss emissions avoided, by 10% in the North American scenario and 2% in the European scenario. The cold chain also enables changes in agricultural production and diets. Connected agricultural production changes decrease emissions, while dietary shifts facilitated by refrigeration may increase emissions. These system-wide changes brought about by the cold chain may increase the embodied emissions of food supplied to retail by 10% or decrease them by 15%, depending on the scenario.
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Affiliation(s)
- Brent R Heard
- Center for Sustainable Systems, School for Environment and Sustainability , University of Michigan , 440 Church Street , Ann Arbor , Michigan 48109 , United States
| | - Shelie A Miller
- Center for Sustainable Systems, School for Environment and Sustainability , University of Michigan , 440 Church Street , Ann Arbor , Michigan 48109 , United States
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33
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Moussa DG, Aparicio C. Present and future of tissue engineering scaffolds for dentin-pulp complex regeneration. J Tissue Eng Regen Med 2018; 13:58-75. [PMID: 30376696 DOI: 10.1002/term.2769] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 07/16/2018] [Accepted: 10/18/2018] [Indexed: 02/06/2023]
Abstract
More than two thirds of the global population suffers from tooth decay, which results in cavities with various levels of lesion severity. Clinical interventions to treat tooth decay range from simple coronal fillings to invasive root canal treatment. Pulp capping is the only available clinical option to maintain the pulp vitality in deep lesions, but irreversible pulp inflammation and reinfection are frequent outcomes for this treatment. When affected pulp involvement is beyond repair, the dentist has to perform endodontic therapy leaving the tooth non-vital and brittle. On-going research strategies have failed to overcome the limitations of existing pulp capping materials so that healthy and progressive regeneration of the injured tissues is attained. Preserving pulp vitality is crucial for tooth homeostasis and durability, and thus, there is a critical need for clinical interventions that enable regeneration of the dentin-pulp complex to rescue millions of teeth annually. The identification and development of appropriate biomaterials for dentin-pulp scaffolds are necessary to optimize clinical approaches to regenerate these hybrid dental tissues. Likewise, a deep understanding of the interactions between the micro-environment, growth factors, and progenitor cells will provide design basis for the most fitting scaffolds for this purpose. In this review, we first introduce the long-lasting clinical dental problem of rescuing diseased tooth vitality, the limitations of current clinical therapies and interventions to restore the damaged tissues, and the need for new strategies to fully revitalize the tooth. Then, we comprehensively report on the characteristics of the main materials of naturally-derived and synthetically-engineered polymers, ceramics, and composite scaffolds as well as their use in dentin-pulp complex regeneration strategies. Finally, we present a series of innovative smart polymeric biomaterials with potential to overcome dentin-pulp complex regeneration challenges.
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Affiliation(s)
- Dina G Moussa
- Minnesota Dental Research Centre for Biomaterials and Biomechanics, Department of Restorative Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minnesota.,Department of Conservative Dentistry, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Conrado Aparicio
- Minnesota Dental Research Centre for Biomaterials and Biomechanics, Department of Restorative Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minnesota
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Buck CC, Dennis PB, Gupta MK, Grant MT, Crosby MG, Slocik JM, Mirau PA, Becknell KA, Comfort KK, Naik RR. Anion‐Mediated Effects on the Size and Mechanical Properties of Enzymatically Crosslinked Suckerin Hydrogels. Macromol Biosci 2018; 19:e1800238. [DOI: 10.1002/mabi.201800238] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/31/2018] [Indexed: 01/26/2023]
Affiliation(s)
| | - Patrick B. Dennis
- Materials and Manufacturing Directorate Air Force Research Laboratory 2179 12th St. WPAFB OH 45433 USA
| | - Maneesh K. Gupta
- Materials and Manufacturing Directorate Air Force Research Laboratory 2179 12th St. WPAFB OH 45433 USA
| | - Marcus T. Grant
- Joint Task Force Civil Support 1504 Madison Ave, Ft. Eustis VA 23604, USA
| | - Marquise G. Crosby
- Materials and Manufacturing Directorate Air Force Research Laboratory 2179 12th St. WPAFB OH 45433 USA
| | | | - Peter A. Mirau
- Materials and Manufacturing Directorate Air Force Research Laboratory 2179 12th St. WPAFB OH 45433 USA
| | | | - Kristen K. Comfort
- Department of Chemical and Materials Engineering University of Dayton Kettering Laboratories 524, 300 College Park Dayton OH 45469 USA
| | - Rajesh R. Naik
- 711 Human Performance Wing Air Force Research Laboratory WPAFB OH 45433 USA
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Lee MS, Lee K, Nam MW, Jeong KM, Lee JE, Kim NW, Yin Y, Lim SY, Yoo DE, Lee J, Jeong JH. Natural deep eutectic solvents as a storage medium for human interferon-α2: a green and improved strategy for room-temperature biologics. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.05.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Qu J, Wang L, Niu L, Lin J, Huang Q, Jiang X, Li M. Porous Silk Fibroin Microspheres Sustainably Releasing Bioactive Basic Fibroblast Growth Factor. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1280. [PMID: 30044408 PMCID: PMC6117722 DOI: 10.3390/ma11081280] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 07/17/2018] [Accepted: 07/23/2018] [Indexed: 11/17/2022]
Abstract
Basic fibroblast growth factor (bFGF) plays a significant role in stimulating cell proliferation. It remains a challenge in the field of biomaterials to develop a carrier with the capacity of continuously releasing bioactive bFGF. In this study, porous bFGF-loaded silk fibroin (SF) microspheres, with inside-out channels, were fabricated by high-voltage electrostatic differentiation, and followed by lyophilization. The embedded bFGF exhibited a slow release mode for over 13 days without suffering burst release. SEM observations showed that incubated L929 cells could fully spread and produce collagen-like fibrous matrix on the surface of SF microspheres. CLSM observations and the results of cell viability assay indicated that bFGF-loaded microspheres could significantly promote cell proliferation during five to nine days of culture, compared to bFGF-unloaded microspheres. This reveals that the bFGF released from SF microspheres retained obvious bioactivity to stimulate cell growth. Such microspheres sustainably releasing bioactive bFGF might be applied to massive cell culture and tissue engineering as a matrix directly, or after being combined with three-dimensional scaffolds.
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Affiliation(s)
- Jing Qu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, China.
| | - Lu Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, China.
| | - Longxing Niu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, China.
| | - Jiaming Lin
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, China.
| | - Qian Huang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, China.
| | - Xuefeng Jiang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, China.
| | - Mingzhong Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, China.
- Nantong Textile and Silk Industrial Technology Research Institute, No. 266 New Century Avenue, Nantong 226000, China.
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Zhou Z, Zhang S, Cao Y, Marelli B, Xia X, Tao TH. Engineering the Future of Silk Materials through Advanced Manufacturing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706983. [PMID: 29956397 DOI: 10.1002/adma.201706983] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/19/2018] [Indexed: 05/05/2023]
Abstract
Silk is a natural fiber renowned for its outstanding mechanical properties that have enabled the manufacturing of ultralight and ultrastrong textiles. Recent advances in silk processing and manufacturing have underpinned a re-interpretation of silk from textiles to technological materials. Here, it is argued that silk materials-optimized by selective pressure to work in the environment at the biotic-abiotic interface-can be harnessed by human micro- and nanomanufacturing technology to impart new functionalities and opportunities. A critical overview of recent progress in silk technology is presented with emphasis on high-tech applications enabled by recent innovations in multilevel modifications, multiscale manufacturing, and multimodal characterization of silk materials. These advances have enabled successful demonstrations of silk materials across several disciplines, including tissue engineering, drug delivery, implantable medical devices, and biodissolvable/degradable devices.
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Affiliation(s)
- Zhitao Zhou
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shaoqing Zhang
- Department of Mechanical Engineering, the University of Texas at Austin, Austin, TX, 78712, USA
| | - Yunteng Cao
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139-4307, USA
| | - Benedetto Marelli
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139-4307, USA
| | - Xiaoxia Xia
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Tiger H Tao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, Beijing, 100049, China
- Department of Mechanical Engineering, the University of Texas at Austin, Austin, TX, 78712, USA
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Kramer RM, Archer MC, Orr MT, Dubois Cauwelaert N, Beebe EA, Huang PWD, Dowling QM, Schwartz AM, Fedor DM, Vedvick TS, Fox CB. Development of a thermostable nanoemulsion adjuvanted vaccine against tuberculosis using a design-of-experiments approach. Int J Nanomedicine 2018; 13:3689-3711. [PMID: 29983563 PMCID: PMC6028350 DOI: 10.2147/ijn.s159839] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background Adjuvants have the potential to increase the efficacy of protein-based vaccines but need to be maintained within specific temperature and storage conditions. Lyophilization can be used to increase the thermostability of protein pharmaceuticals; however, no marketed vaccine that contains an adjuvant is currently lyophilized, and lyophilization of oil-in-water nanoemulsion adjuvants presents a specific challenge. We have previously demonstrated the feasibility of lyophilizing a candidate adjuvanted protein vaccine against Mycobacterium tuberculosis (Mtb), ID93 + GLA-SE, and the subsequent improvement of thermostability; however, further development is required to prevent physicochemical changes and degradation of the TLR4 agonist glucopyranosyl lipid adjuvant formulated in an oil-in-water nanoemulsion (SE). Materials and methods In this study, we took a systematic approach to the development of a thermostable product by first identifying compatible solution conditions and stabilizing excipients for both antigen and adjuvant. Next, we applied a design-of-experiments approach to identify stable lyophilized drug product formulations. Results We identified specific formulations that contain disaccharide or a combination of disaccharide and mannitol that can achieve substantially improved thermostability and maintain immunogenicity in a mouse model when tested in accelerated and real-time stability studies. Conclusion These efforts will aid in the development of a platform formulation for use with other similar vaccines.
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Affiliation(s)
- Ryan M Kramer
- Infectious Disease Research Institute, Seattle, WA, USA,
| | | | - Mark T Orr
- Infectious Disease Research Institute, Seattle, WA, USA,
| | | | - Elyse A Beebe
- Infectious Disease Research Institute, Seattle, WA, USA,
| | - Po-Wei D Huang
- Infectious Disease Research Institute, Seattle, WA, USA,
| | | | | | - Dawn M Fedor
- Infectious Disease Research Institute, Seattle, WA, USA,
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Li S, Yu D, Ji H, Zhao B, Ji L, Leng X. In vivo degradation and neovascularization of silk fibroin implants monitored by multiple modes ultrasound for surgical applications. Biomed Eng Online 2018; 17:87. [PMID: 29925373 PMCID: PMC6011526 DOI: 10.1186/s12938-018-0478-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 04/17/2018] [Indexed: 11/16/2022] Open
Abstract
Background In this paper we aimed to investigate the neovascularization and biodegradation of the silk fibroin in vivo using multiple modes ultrasound, including two-dimensional, three-dimensional and contrast-enhanced ultrasound by quantifying the echo intensity, volume and contrast enhancement of the silk fibroin implants. Method A total of 56 male Wistar rats were randomly divided into two groups and 4%(w/v) silk hydrogels were injected subcutaneously at hind limb or upper back of the rats respectively to compare the biodegradation rate in different sites of the body. The implants were observed at day 0, 4, 8, 12, 16, 18, 20 with multiple modes ultrasound. Results The echo intensity of silk fibroin implants increased and the volume decreased gradually, and complete degradation was confirmed 18 and 20 days after subcutaneous implantation at the upper back and at the hind limb respectively. This demonstrated that the silk fibroin embedded in the upper back degraded slightly faster than that in the hind limb. Additionally, the neovascularization revealed by the contrast enhancement values of CEUS showed that there was a relatively low enhancement (< 5 dB) during day 4 to day 16, followed by moderate enhancement at day 18 (5–20 dB), and a significant enhancement at day 20 (> 40 dB). Conclusion This study suggests that multiple modes ultrasound imaging could be an ideal method to evaluate the degradation and neovascularization of biomaterial implants in vivo for surgical applications.
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Affiliation(s)
- Shouqiang Li
- Department of Ultrasound, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, Heilongjiang Province, China.,The Key Laboratories of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China
| | - Dandan Yu
- Department of Ultrasound, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, Heilongjiang Province, China
| | - Huan Ji
- Department of Ultrasound, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, Heilongjiang Province, China
| | - Baocun Zhao
- Department of Ultrasound, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, Heilongjiang Province, China
| | - Lili Ji
- Department of Ultrasound, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, Heilongjiang Province, China
| | - Xiaoping Leng
- Department of Ultrasound, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, Heilongjiang Province, China. .,The Key Laboratories of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China.
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Pignatelli C, Perotto G, Nardini M, Cancedda R, Mastrogiacomo M, Athanassiou A. Electrospun silk fibroin fibers for storage and controlled release of human platelet lysate. Acta Biomater 2018; 73:365-376. [PMID: 29673841 DOI: 10.1016/j.actbio.2018.04.025] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 03/31/2018] [Accepted: 04/12/2018] [Indexed: 02/03/2023]
Abstract
Human platelet lysate (hPL) is a pool of growth factors and cytokines able to induce regeneration of different tissues. Despite its good potentiality as therapeutic tool for regenerative medicine applications, hPL has been only moderately exploited in this field. A more widespread adoption has been limited because of its rapid degradation at room temperature that decreases its functionality. Another limiting factor for its extensive use is the difficulty of handling the hPL gels. In this work, silk fibroin-based patches were developed to address several points: improving the handling of hPL, enabling their delivery in a controlled manner and facilitating their storage by creating a device ready to use with expanded shelf life. Patches of fibroin loaded with hPL were synthesized by electrospinning to take advantage of the fibrous morphology. The release kinetics of the material was characterized and tuned through the control of fibroin crystallinity. Cell viability assays, performed with primary human dermal fibroblasts, demonstrated that fibroin is able to preserve the hPL biological activity and prolong its shelf-life. The strategy of storing and preserving small active molecules within a naturally-derived, protein-based fibrous scaffold was successfully implemented, leading to the design of a biocompatible device, which can potentially simplify the storage and the application of the hPL on a human patient, undergoing medical procedures such as surgery and wound care. STATEMENT OF SIGNIFICANCE Human platelets lysate (hPL) is a mixture of growth factors and cytokines able to induce the regeneration of damaged tissues. This study aims at enclosing hPL in a silk fibroin electrospun matrix to expand its utilization. Silk fibroin showed the ability to preserve the hPL activity at temperature up to 60 °C and the manipulation of fibroin's crystallinity provided a tool to modulate the hPL release kinetic. This entails the possibility to fabricate the hPL silk fibroin patches in advance and store them, resulting in an easy and fast accessibility and an expanded use of hPL for wound healing.
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Affiliation(s)
- Cataldo Pignatelli
- Smart Materials, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy; DIBRIS, University of Genoa, via Opera Pia 13, 16145 Genoa, Italy.
| | - Giovanni Perotto
- Smart Materials, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy.
| | - Marta Nardini
- Department of Experimental Medicine (DIMES), University of Genova, Largo Rosanna Benzi 10, 16132 Genova, Italy; IRCCS AOU San Martino-IST Istituto Nazionale per la Ricerca sul Cancro, Largo Rosanna Benzi 10, 16132 Genova, Italy
| | - Ranieri Cancedda
- Department of Experimental Medicine (DIMES), University of Genova, Largo Rosanna Benzi 10, 16132 Genova, Italy; IRCCS AOU San Martino-IST Istituto Nazionale per la Ricerca sul Cancro, Largo Rosanna Benzi 10, 16132 Genova, Italy
| | - Maddalena Mastrogiacomo
- Department of Experimental Medicine (DIMES), University of Genova, Largo Rosanna Benzi 10, 16132 Genova, Italy; IRCCS AOU San Martino-IST Istituto Nazionale per la Ricerca sul Cancro, Largo Rosanna Benzi 10, 16132 Genova, Italy
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Accurate prediction of vaccine stability under real storage conditions and during temperature excursions. Eur J Pharm Biopharm 2018; 125:76-84. [DOI: 10.1016/j.ejpb.2018.01.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 11/29/2017] [Accepted: 01/08/2018] [Indexed: 11/23/2022]
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Riccò R, Liang W, Li S, Gassensmith JJ, Caruso F, Doonan C, Falcaro P. Metal-Organic Frameworks for Cell and Virus Biology: A Perspective. ACS NANO 2018; 12:13-23. [PMID: 29309146 DOI: 10.1021/acsnano.7b08056] [Citation(s) in RCA: 177] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Metal-organic frameworks (MOFs) are a class of coordination polymers, consisting of metal ions or clusters linked together by chemically mutable organic groups. In contrast to zeolites and porous carbons, MOFs are constructed from a building block strategy that enables molecular level control of pore size/shape and functionality. An area of growing interest in MOF chemistry is the synthesis of MOF-based composite materials. Recent studies have shown that MOFs can be combined with biomacromolecules to generate novel biocomposites. In such materials, the MOF acts as a porous matrix that can encapsulate enzymes, oligonucleotides, or even more complex structures that are capable of replication/reproduction (i.e., viruses, bacteria, and eukaryotic cells). The synthetic approach for the preparation of these materials has been termed "biomimetic mineralization", as it mimics natural biomineralization processes that afford protective shells around living systems. In this Perspective, we focus on the preparation of MOF biocomposites that are composed of complex biological moieties such as viruses and cells and canvass the potential applications of this encapsulation strategy to cell biology and biotechnology.
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Affiliation(s)
- Raffaele Riccò
- Institute of Physical and Theoretical Chemistry, Graz University of Technology , Stremayrgasse 9, 8010 Graz, Austria
| | - Weibin Liang
- Department of Chemistry, School of Physical Sciences, The University of Adelaide , North Terrace Campus, Adelaide, SA 5005, Australia
| | - Shaobo Li
- Department of Chemistry and Biochemistry, The University of Texas at Dallas , Richardson, Texas 75080, United States
| | - Jeremiah J Gassensmith
- Department of Chemistry and Biochemistry, The University of Texas at Dallas , Richardson, Texas 75080, United States
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Christian Doonan
- Department of Chemistry, School of Physical Sciences, The University of Adelaide , North Terrace Campus, Adelaide, SA 5005, Australia
| | - Paolo Falcaro
- Institute of Physical and Theoretical Chemistry, Graz University of Technology , Stremayrgasse 9, 8010 Graz, Austria
- Department of Chemistry, School of Physical Sciences, The University of Adelaide , North Terrace Campus, Adelaide, SA 5005, Australia
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Zhang X, Cui J, Wu Y, Wang H, Wang J, Qiu Y, Mo Y, He Y, Zhang X, Yin Y, Xu W. Streptococcus pneumoniae Attenuated Strain SPY1 with an Artificial Mineral Shell Induces Humoral and Th17 Cellular Immunity and Protects Mice against Pneumococcal Infection. Front Immunol 2018; 8:1983. [PMID: 29375585 PMCID: PMC5768616 DOI: 10.3389/fimmu.2017.01983] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 12/20/2017] [Indexed: 11/13/2022] Open
Abstract
Streptococcus pneumoniae is a major pathogen leading to substantial morbidity and mortality in children under 5 years of age. Vaccination is an effective strategy to prevent S. pneumoniae infection. SPY1 is a pneumococcal vaccine candidate strain obtained in our previous study. To improve its stability and immunogencity, in this study, we constructed the SPY1ΔlytA strain that lacks autolysin activity and was coated with an artificial exterior surface calcium phosphate shell by in situ mineralization. The resulting strain SPY1ΔlytACaPi displayed enhanced thermal stability enabling storage at 37°C for 1 week. Furthermore, mucosal and subcutaneous immunization with the SPY1ΔlytACaPi strain induced better protective effects than SPY1ΔlytA in anti-colonization after challenging with 19F and anti-invasion by D39 in mice. Subcutaneous immunization with SPY1ΔlytACaPi elicited higher IgG level while mucosal immunization primarily elicited an immune response which is supposed to be related to Th17 cells. Taken together, the mineralized strain may be a promising candidate for an attenuated S. pneumoniae vaccine.
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Affiliation(s)
- Xinyuan Zhang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Jingjing Cui
- Department of Clinical Laboratory, Chongqing Hospital for Women and Children, Chongqing, China
| | - Yingying Wu
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Hong Wang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Jian Wang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yulan Qiu
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yunjun Mo
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yujuan He
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Xuemei Zhang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yibing Yin
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Wenchun Xu
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory Medicine, Chongqing Medical University, Chongqing, China
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Lau S, Fei J, Liu H, Chen W, Liu R. Multilayered pyramidal dissolving microneedle patches with flexible pedestals for improving effective drug delivery. J Control Release 2017; 265:113-119. [DOI: 10.1016/j.jconrel.2016.08.031] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 11/17/2022]
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Mistilis MJ, Joyce JC, Esser ES, Skountzou I, Compans RW, Bommarius AS, Prausnitz MR. Long-term stability of influenza vaccine in a dissolving microneedle patch. Drug Deliv Transl Res 2017; 7:195-205. [PMID: 26926241 DOI: 10.1007/s13346-016-0282-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study tested the hypothesis that optimized microneedle patch formulations can stabilize trivalent subunit influenza vaccine during long-term storage outside the cold chain and when exposed to potential stresses found during manufacturing and storage. Formulations containing combinations of trehalose/sucrose, sucrose/arginine, and arginine/heptagluconate were successful at retaining most or all vaccine activity during storage at 25 °C for up to 24 months as determined by ELISA assay. The best formulation of microneedle patches contained arginine/heptagluconate, which showed no significant loss of vaccine activity during the study. To validate these in vitro findings, mice were immunized using trivalent influenza vaccine stored in microneedle patches for more than 1 year at 25 °C, which elicited antibody titers greater than or equal to fresh liquid vaccine delivered by intradermal injection, indicating the retention of immunogenicity during storage. Finally, influenza vaccine in microneedle patches lost no significant activity during exposure to 60 °C for 4 months, multiple freeze-thaw cycles, or electron beam irradiation. We conclude that optimally formulated microneedle patches can retain influenza vaccine activity during extended storage outside the cold chain and during other environmental stresses, which suggests the possibility of microneedle patch storage on pharmacy shelves without refrigeration.
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Affiliation(s)
- Matthew J Mistilis
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA, 30332-0100, USA
| | - Jessica C Joyce
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, Georgia Institute of Technology, 313 Ferst Drive, Atlanta, GA, 30332-0100, USA
| | - E Stein Esser
- Department of Microbiology and Immunology and Emory Vaccine Center, Emory University School of Medicine, 1518 Clifton Road, Atlanta, GA, 30322, USA
| | - Ioanna Skountzou
- Department of Microbiology and Immunology and Emory Vaccine Center, Emory University School of Medicine, 1518 Clifton Road, Atlanta, GA, 30322, USA
| | - Richard W Compans
- Department of Microbiology and Immunology and Emory Vaccine Center, Emory University School of Medicine, 1518 Clifton Road, Atlanta, GA, 30322, USA
| | - Andreas S Bommarius
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA, 30332-0100, USA
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA, 30332-0400, USA
| | - Mark R Prausnitz
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA, 30332-0100, USA.
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, Georgia Institute of Technology, 313 Ferst Drive, Atlanta, GA, 30332-0100, USA.
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Barnes V L, Fedor DM, Williams S, Dowling QM, Archer MC, Cloutier S, Parker S, Vedvick TS, Fox CB, Kramer RM. Lyophilization of an Adjuvanted Mycobacterium tuberculosis Vaccine in a Single-Chamber Pharmaceutical Cartridge. AAPS PharmSciTech 2017; 18:2077-2084. [PMID: 28000085 DOI: 10.1208/s12249-016-0688-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 12/03/2016] [Indexed: 11/30/2022] Open
Abstract
Although substantial effort has been made in the development of next-generation recombinant vaccine systems, maintenance of a cold chain is still typically required and remains a critical challenge in effective vaccine distribution. The ability to engineer alternative containment systems that improve distribution and administration represents potentially significant enhancements to vaccination strategies. In this work, we evaluate the ability to successfully lyophilize a previously demonstrated thermostable tuberculosis vaccine formulation (ID93 + GLA-SE) in a cartridge format compared to a traditional vial container format. Due to differences in the shape of the container formats, a novel apparatus was developed to facilitate lyophilization in a cartridge. Following lyophilization, the lyophilizate was assessed visually, by determining residual moisture content, and by collecting melting profiles. Reconstituted formulations were assayed for particle size, protein presence, and GLA content. Based on assessment of the lyophilizate, the multicomponent vaccine was successfully lyophilized in both formats. Also, the physicochemical properties of the major components in the formulation, including antigen and adjuvant, were retained after lyophilization in either format. Ultimately, this study demonstrates that complex formulations can be lyophilized in alternative container formats to the standard pharmaceutical glass vial, potentially helping to increase the distribution of vaccines.
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Silk micrococoons for protein stabilisation and molecular encapsulation. Nat Commun 2017; 8:15902. [PMID: 28722016 PMCID: PMC5524934 DOI: 10.1038/ncomms15902] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 05/12/2017] [Indexed: 12/21/2022] Open
Abstract
Naturally spun silks generate fibres with unique properties, including strength, elasticity and biocompatibility. Here we describe a microfluidics-based strategy to spin liquid native silk, obtained directly from the silk gland of Bombyx mori silkworms, into micron-scale capsules with controllable geometry and variable levels of intermolecular β-sheet content in their protein shells. We demonstrate that such micrococoons can store internally the otherwise highly unstable liquid native silk for several months and without apparent effect on its functionality. We further demonstrate that these native silk micrococoons enable the effective encapsulation, storage and release of other aggregation-prone proteins, such as functional antibodies. These results show that native silk micrococoons are capable of preserving the full activity of sensitive cargo proteins that can aggregate and lose function under conditions of bulk storage, and thus represent an attractive class of materials for the storage and release of active biomolecules. Silk fibres currently used in biotechnology are chemically reconstituted silk fibroins (RSF), which are more stable than native silk fibroin (NSF) but possess different biophysical properties. Here, the authors use microfluidic droplets to encapsulate and store NSF, preserving their native structure.
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Recent advances in therapeutic delivery systems of bacteriophage and bacteriophage-encoded endolysins. Ther Deliv 2017. [DOI: 10.4155/tde-2017-0040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Antibiotics have been the cornerstone of clinical management of bacterial infection since their discovery in the early 20th century. However, their widespread and often indiscriminate use has now led to reports of multidrug resistance becoming globally commonplace. Bacteriophage therapy has undergone a recent revival in battle against pathogenic bacteria, as the self-replicating and co-evolutionary features of these predatory virions offer several advantages over conventional therapeutic agents. In particular, the use of targeted bacteriophage therapy from specialized delivery platforms has shown particular promise owing to the control of delivery location, administration conditions and dosage of the therapeutic cargo. This review presents an overview of the recent formulations and applications of such delivery vehicles as an innovative and elegant tool for bacterial control.
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Zhang L, Herrera C, Coburn J, Olejniczak N, Ziprin P, Kaplan DL, LiWang PJ. Stabilization and Sustained Release of HIV Inhibitors by Encapsulation in Silk Fibroin Disks. ACS Biomater Sci Eng 2017; 3:1654-1665. [PMID: 33225060 DOI: 10.1021/acsbiomaterials.7b00167] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Topical microbicides have the potential to provide effective protection against sexual transmission of HIV. Challenges in developing microbicides include their application in resource-poor settings with high temperatures and a lack of refrigeration, and low user adherence to a rigorous daily regimen. Several protein-based HIV inhibitors show great promise as microbicides, being highly specific and not expected to lead to resistance that would affect the efficacy of current antiretroviral treatments. We show that four potent protein HIV inhibitors, 5P12-RANTES, 5P12-RANTES-L-C37, Grft, and Grft-L-C37 can be formulated into silk fibroin (SF) disks and remain functional for 14 months at 25, 37, and 50 °C. These HIV inhibitor-encapsulated SF disks show excellent inhibition properties in PBMC and in human colorectal and cervical tissue explants, and do not induce inflammatory cytokine secretion. Further, the SF provides a mechanically robust matrix with versatile material formats for this type of application. Finally, a formulation was developed to allow sustained release of functional Grft for 4 weeks at levels sufficient to inhibit HIV transmission. This work establishes the suitability of HIV inhibitor-encapsulated SF disks as topical HIV microbicides that can be further developed to allow easy insertion for extended protection.
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Affiliation(s)
- Li Zhang
- Molecular Cell Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Carolina Herrera
- Department of Medicine, St. Mary's Campus Imperial College, Room 460 Norfolk Place, London W2 1PG, United Kingdom
| | - Jeannine Coburn
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Natalia Olejniczak
- Department of Medicine, St. Mary's Campus Imperial College, Room 460 Norfolk Place, London W2 1PG, United Kingdom
| | - Paul Ziprin
- Department of Surgery and Cancer, St. Mary's Hospital, Imperial College London, London W2 1PZ, United Kingdom
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Patricia J LiWang
- Molecular Cell Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
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Wang C, Tadepalli S, Luan J, Liu KK, Morrissey JJ, Kharasch ED, Naik RR, Singamaneni S. Metal-Organic Framework as a Protective Coating for Biodiagnostic Chips. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:10.1002/adma.201604433. [PMID: 27925296 PMCID: PMC5369648 DOI: 10.1002/adma.201604433] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/04/2016] [Indexed: 05/22/2023]
Abstract
Zeolitic imidazolate framework-8 (ZIF-8) grown around antibodies anchored to plasmonic nanostructures serves as a protective layer to preserve the biorecognition ability of antibodies stored at room and elevated temperatures for several days. The biofunctionality of the ZIF-8-protected biochip can be restored by a simple water-rinsing step, making it highly convenient for use in point-of-care and resource-limited settings.
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Affiliation(s)
- Congzhou Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Jingyi Luan
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Keng-Ku Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Jeremiah J Morrissey
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis, St. Louis, MO, 63110, USA
- The Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Evan D Kharasch
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis, St. Louis, MO, 63110, USA
- The Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Rajesh R Naik
- 711th Human Performance Wing, Wright-Patterson, Air Force Base, Dayton, OH, 45433, USA
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
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