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Mehanny M, Boese A, Bornamehr B, Hoppstädter J, Presser V, Kiemer AK, Lehr CM, Fuhrmann G. Spray-dried Pneumococcal Membrane Vesicles are Promising Candidates for Pulmonary Immunization. Int J Pharm 2022;:121794. [PMID: 35525468 DOI: 10.1016/j.ijpharm.2022.121794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 11/23/2022]
Abstract
Pneumococcal infections represent a global health threat, which requires novel vaccine developments. Extracellular vesicles are secreted from most cells, including prokaryotes, and harbor virulence factors and antigens. Hence, bacterial membrane vesicles (MVs) may induce a protective immune response. For the first time, we formulate spray-dried gram-positive pneumococcal MVs-loaded vaccine microparticles using lactose/leucine as inert carriers to enhance their stability and delivery for pulmonary immunization. The optimized vaccine microparticles showed a mean particle size of 1-2µm, corrugated surface, and nanocrystalline nature. Their aerodynamic diameter of 2.34µm, average percentage emitted dose of 88.8%, and fine powder fraction 79.7%, demonstrated optimal flow properties for deep alveolar delivery using a next-generation impactor. Furthermore, confocal microscopy confirmed the successful encapsulation of pneumococcal MVs within the prepared microparticles. Human macrophage-like THP-1 cells displayed excellent viability, negligible cytotoxicity, and a rapid uptake around 60% of fluorescently labeled MVs after incubation with vaccine microparticles. Moreover, vaccine microparticles increased the release of pro-inflammatory cytokines tumor necrosis factor and interleukin-6 from primary human peripheral blood mononuclear cells. Vaccine microparticles exhibited excellent properties as promising vaccine candidates for pulmonary immunization and are optimal for further animal testing, scale-up and clinical translation.
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Bin Karim S, Ordoubadi M, Wang H, Gomez M, Vehring R. On the feasibility of spray-dried eudragit-trehalose microparticles for enteric drug delivery. Int J Pharm 2021; 610:121264. [PMID: 34742827 DOI: 10.1016/j.ijpharm.2021.121264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 10/28/2021] [Accepted: 10/31/2021] [Indexed: 11/21/2022]
Abstract
Enteric infections have long constituted a silent epidemic responsible for hundreds of thousands of deaths around the world every year. Because of the global rise in antibiotic-resistant bacteria and the slow development of new small-molecule antibiotics, alternatives such as bacteriophage therapy have become a much sought-after option in the treatment of enteric infections. However, the administration of therapeutics through the oral route to target gastrointestinal infections poses challenges to dosage formulation because these active ingredients, particularly relatively fragile biological entities, require protection from the stomach's harsh acids. Encapsulation of the therapeutics within a pH-responsive coating capable of surviving low pH conditions has the potential to provide such protection. In this study, we developed a spray-dried powder vehicle capable of withstanding low pH comparable to stomach conditions, using Eudragit® S100 as a protective particle coating and trehalose as a stabilizing excipient for a possible active component. A particle formation model and a monodisperse droplet chain technique were initially used to study the formation process of Eudragit-trehalose composite microparticles at different ratios and in different ratios of water-ethanol solvent, which showed formation of particles with Eudragit shells varying in thickness from 0.13 μm to 0.75 μm. Promising Eudragit-trehalose formulations were subsequently spray-dried and their survival in acidic and alkaline environments studied using a new shadowgraphic imaging method. The results demonstrated that Eudragit was capable of creating a protective shell in the particles irrespective of the type of solvent used to prepare the formulations. The trehalose cores of particles with higher than 5% w/w of Eudragit remained protected after one hour of exposure at pH 2, indicating the potential of Eudragit-trehalose formulations for enteric delivery of drugs.
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Caselli L, Mendozza M, Muzzi B, Toti A, Montis C, Mello T, Di Cesare Mannelli L, Ghelardini C, Sangregorio C, Berti D. Lipid Cubic Mesophases Combined with Superparamagnetic Iron Oxide Nanoparticles: A Hybrid Multifunctional Platform with Tunable Magnetic Properties for Nanomedical Applications. Int J Mol Sci 2021; 22:9268. [PMID: 34502176 PMCID: PMC8430948 DOI: 10.3390/ijms22179268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/21/2021] [Accepted: 08/23/2021] [Indexed: 12/29/2022] Open
Abstract
Hybrid materials composed of superparamagnetic iron oxide nanoparticles (SPIONs) and lipid self-assemblies possess considerable applicative potential in the biomedical field, specifically, for drug/nutrient delivery. Recently, we showed that SPIONs-doped lipid cubic liquid crystals undergo a cubic-to-hexagonal phase transition under the action of temperature or of an alternating magnetic field (AMF). This transition triggers the release of drugs embedded in the lipid scaffold or in the water channels. In this contribution, we address this phenomenon in depth, to fully elucidate the structural details and optimize the design of hybrid multifunctional carriers for drug delivery. Combining small-angle X-ray scattering (SAXS) with a magnetic characterization, we find that, in bulk lipid cubic phases, the cubic-to-hexagonal transition determines the magnetic response of SPIONs. We then extend the investigation from bulk liquid-crystalline phases to colloidal dispersions, i.e., to lipid/SPIONs nanoparticles with cubic internal structure ("magnetocubosomes"). Through Synchrotron SAXS, we monitor the structural response of magnetocubosomes while exposed to an AMF: the magnetic energy, converted into heat by SPIONs, activates the cubic-to-hexagonal transition, and can thus be used as a remote stimulus to spike drug release "on-demand". In addition, we show that the AMF-induced phase transition in magnetocubosomes steers the realignment of SPIONs into linear string assemblies and connect this effect with the change in their magnetic properties, observed at the bulk level. Finally, we assess the internalization ability and cytotoxicity of magnetocubosomes in vitro on HT29 adenocarcinoma cancer cells, in order to test the applicability of these smart carriers in drug delivery applications.
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Affiliation(s)
- Lucrezia Caselli
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
| | - Marco Mendozza
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
| | - Beatrice Muzzi
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 1240, I-53100 Siena, Italy
- ICCOM-CNR, I-50019 Sesto Fiorentino, Florence, Italy
- INSTM, I-50019 Sesto Fiorentino, Florence, Italy
| | - Alessandra Toti
- Department of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy; (A.T.); (L.D.C.M.); (C.G.)
| | - Costanza Montis
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
| | - Tommaso Mello
- Department of Clinical and Experimental Biomedical Sciences “Mario Serio”, Gastroenterology Unit, University of Florence, 50139 Florence, Italy;
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy; (A.T.); (L.D.C.M.); (C.G.)
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy; (A.T.); (L.D.C.M.); (C.G.)
| | - Claudio Sangregorio
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- ICCOM-CNR, I-50019 Sesto Fiorentino, Florence, Italy
- INSTM, I-50019 Sesto Fiorentino, Florence, Italy
| | - Debora Berti
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
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Mohammadi M, Dehghani P, Mohseninia A, Roozbehani M, Hemphill A, Hesamizadeh K. Incorporation of the Tat cell-penetrating peptide into nanofibers improves the respective antitumor immune response. J Cell Physiol 2020; 236:1401-1417. [PMID: 32686113 DOI: 10.1002/jcp.29946] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 07/07/2020] [Indexed: 11/06/2022]
Abstract
A major challenge for the development of anticancer vaccines is the induction of a safe and effective immune response, particularly mediated by CD8+ T lymphocytes, in an adjuvant-free manner. In this respect, we present a simple strategy to improve the specific CD8+ T cell responses using KFE8 nanofibers bearing a Class I (Kb)-restricted peptide epitope (called E. nanofibers) without the use of adjuvant. We demonstrate that incorporation of Tat, a cell-penetrating peptide (CPP) of the HIV transactivator protein, into E. nanofibers remarkably enhanced tumor-specific CD8+ T cell responses. E. nanofibers containing 12.5% Tat peptide (E.Tat12.5 nanofiber) increased antigen cross-presentation by bone marrow-derived dendritic cells as compared with E. nanofibers, or E. nanofibers containing 25 or 50% the Tat peptide. Uptake of KFE8.Tat12.5 nanofibers by dendritic cells (DCs) was significantly increased compared with KFE8 nanofiber lacking Tat. Peritoneal and lymph node DCs of mice immunized with E.Tat12.5 nanofibers exhibited increased presentation of the H2kb-epitope (reminiscent for cross-presentation) compared with DCs obtained from E. nanofiber vaccinated mice. Tetrameric and intracellular cytokine staining revealed that vaccination with E.Tat12.5 triggered a robust and specific CD8+ T lymphocyte response, which was more pronounced than in mice vaccinated with E. nanofibers alone. Furthermore, E.Tat12.5 nanofibers were more potent than E. nanofiber to induce antitumor immune response and tumor-infiltrating IFN-γ CD8 T lymphocyte. In terms of cancer vaccine development, we propose that harnessing the nanofiber-based vaccine platform with incorporated Tat peptide could present a simple and promising strategy to induce highly effective antitumor immune response.
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Affiliation(s)
- Mohsen Mohammadi
- Biotechnology Department, The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Parva Dehghani
- Biotechnology Department, The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Atefeh Mohseninia
- Department of Biochemistry, School of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Mona Roozbehani
- Department of Parasitology and Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Andrew Hemphill
- Department of Infectious Diseases and Pthobiology, Institute of Parasitology, Vetsuisse Faculty, University of Berne, Bern, Switzerland
| | - Khashayar Hesamizadeh
- Department of Virology, Middle East Liver Diseases (MELD) Center, Iran University of Medical Sciences, Tehran, Iran
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Abstract
The emerging field of precision medicine is rapidly growing, fostered by the advances in genome mapping and molecular diagnosis. In general, the translation of these advances into precision treatments relies on the use of biological macromolecules, whose structure offers a high specificity and potency. Unfortunately, due to their complex structure and limited ability to overcome biological barriers, these macromolecules need to be administered via injection. The scientific community has devoted significant effort to making the oral administration of macromolecules plausible thanks to the implementation of drug delivery technologies. Here, an overview of the current situation and future prospects in the field of oral delivery of biologics is provided. Technologies in clinical trials, as well as recent and disruptive delivery systems proposed in the literature for local and systemic delivery of biologics including peptides, antibodies, and nucleic acids, are described. Strategies for the specific targeting of gastrointestinal regions-stomach, small bowel, and colon-cell populations, and internalization pathways, are analyzed. Finally, challenges associated with the clinical translation, future prospects, and identified opportunities for advancement in this field are also discussed.
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Affiliation(s)
- Matilde Durán-Lobato
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela, Santiago de Compostela, 15782, Spain
- IDIS Research Institute, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain
| | - Zhigao Niu
- Riddet Institute, Massey University, Palmerston North, 4442, New Zealand
- Food and Bio-based Products Group, AgResearch Ltd, Palmerston North, 4442, New Zealand
| | - María José Alonso
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela, Santiago de Compostela, 15782, Spain
- IDIS Research Institute, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain
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Parenky AC, Akalkotkar A, Mulla NS, D'Souza MJ. Harnessing T-cell activity against prostate cancer: A therapeutic microparticulate oral cancer vaccine. Vaccine 2019; 37:6085-6092. [PMID: 31477437 DOI: 10.1016/j.vaccine.2019.08.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 07/16/2019] [Accepted: 08/16/2019] [Indexed: 10/26/2022]
Abstract
Prostate Cancer specific immunotherapy in combination with immune stimulating adjuvants may serve as a viable strategy for facilitating tumor regression and preventing recurrence. In this study, an oral microparticulate vaccine encapsulating tumor associated antigens (TAA) extracted from a murine prostate cancer cell line, TRAMP-C2, was formulated with the help of a spray dryer. Microparticles were characterized in vitro to determine their physicochemical properties and antigenicity. Formulated microparticles had an average size of 4.92 ± 0.5 μm with a zeta potential of 7.92 ± 1.2 mV. In order to test our formulation for its ability to demonstrate adequate antigen presentation and co-stimulation, microparticles were tested in vitro on murine dendritic cells. In vitro biological characterization demonstrated the activation of specific immune system markers such as CD80/86, CD40, MHC-I and MHC-II. Following in vitro characterization, in vivo anti-tumor efficacy of the oral microparticulate vaccine was evaluated in C57BL/6 male mice. Combination therapy of vaccine microparticles with cyclophosphamide and granulocyte macrophage-colony stimulating factor (GM-CSF) demonstrated a five-fold reduction in tumor volume as compared to non-vaccinated mice. At the cellular level, cyclophosphamide and GM-CSF augmented the vaccine response as indicated by the reduced tumor volume and significant elevation of cytotoxic T-cell (CTL) CD8+ and (T-helper) CD4+ T-cells compared to mice receiving vaccine microparticles alone. Furthermore, our studies indicate a significant reduction in T-regulatory cells (T-regs) in mice receiving vaccine along with GM-CSF and cyclophosphamide, one of the immune escape mechanisms linked to tumor growth and progression. Thus, oral microparticulate vaccines have the potential to trigger a robust anti-tumor cellular response, and in combination with clinically relevant agents, significantly resist tumor growth and progression.
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Affiliation(s)
- Ashwin C Parenky
- Mercer University, Vaccine Nanotechnology Laboratory, Center for Drug Delivery Research, Atlanta, GA 30341, USA.
| | - Archana Akalkotkar
- Mercer University, Vaccine Nanotechnology Laboratory, Center for Drug Delivery Research, Atlanta, GA 30341, USA; Charles River Laboratories, Ashland, OH 44805, USA.
| | - Nihal S Mulla
- Mercer University, Vaccine Nanotechnology Laboratory, Center for Drug Delivery Research, Atlanta, GA 30341, USA; Department of Pharmaceutical and Administrative Sciences, College of Pharmacy and Health Sciences, Drake University, 2507 University Ave, Des Moines, IA 50311, USA
| | - Martin J D'Souza
- Mercer University, Vaccine Nanotechnology Laboratory, Center for Drug Delivery Research, Atlanta, GA 30341, USA.
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7
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Abstract
Methods for depositing thin films are important in generating functional materials for diverse applications in a wide variety of fields. Over the last half-century, the layer-by-layer assembly of nanoscale films has received intense and growing interest. This has been fueled by innovation in the available materials and assembly technologies, as well as the film-characterization techniques. In this Review, we explore, discuss, and detail innovation in layer-by-layer assembly in terms of past and present developments, and we highlight how these might guide future advances. A particular focus is on conventional and early developments that have only recently regained interest in the layer-by-layer assembly field. We then review unconventional assemblies and approaches that have been gaining popularity, which include inorganic/organic hybrid materials, cells and tissues, and the use of stereocomplexation, patterning, and dip-pen lithography, to name a few. A relatively recent development is the use of layer-by-layer assembly materials and techniques to assemble films in a single continuous step. We name this "quasi"-layer-by-layer assembly and discuss the impacts and innovations surrounding this approach. Finally, the application of characterization methods to monitor and evaluate layer-by-layer assembly is discussed, as innovation in this area is often overlooked but is essential for development of the field. While we intend for this Review to be easily accessible and act as a guide to researchers new to layer-by-layer assembly, we also believe it will provide insight to current researchers in the field and help guide future developments and innovation.
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Affiliation(s)
- Joseph J Richardson
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia.,Manufacturing, CSIRO , Clayton, Victoria 3168, Australia
| | - Jiwei Cui
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Mattias Björnmalm
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Julia A Braunger
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Hirotaka Ejima
- Institute of Industrial Science, The University of Tokyo , Tokyo 153-8505, Japan
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
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Glavas L, Odelius K, Albertsson AC. Simultaneous Polymerization and Polypeptide Particle Production via Reactive Spray-Drying. Biomacromolecules 2016; 17:2930-6. [PMID: 27445061 PMCID: PMC5815657 DOI: 10.1021/acs.biomac.6b00747] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/20/2016] [Indexed: 11/28/2022]
Abstract
A method for producing polypeptide particles via in situ polymerization of N-carboxyanhydrides during spray-drying has been developed. This method was enabled by the development of a fast and robust synthetic pathway to polypeptides using 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as an initiator for the ring-opening polymerization of N-carboxyanhydrides. The polymerizations finished within 5 s and proved to be very tolerant toward impurities such as amino acid salts and water. The formed particles were prepared by mixing the monomer, N-carboxyanhydride of l-glutamic acid benzyl ester (NCAGlu) and the initiator (DBU) during the atomization process in the spray-dryer and were spherical with a size of ∼1 μm. This method combines two steps; making it a straightforward process that facilitates the production of polypeptide particles. Hence, it furthers the use of spray-drying and polypeptide particles in the pharmaceutical industry.
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Affiliation(s)
- Lidija Glavas
- Fiber and Polymer Technology, School of Chemical Science and Engineering, KTH, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Karin Odelius
- Fiber and Polymer Technology, School of Chemical Science and Engineering, KTH, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Ann-Christine Albertsson
- Fiber and Polymer Technology, School of Chemical Science and Engineering, KTH, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
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Abstract
Designing efficient recombinant mucosal vaccines against enteric diseases is still a major challenge. Mucosal delivery of recombinant vaccines requires encapsulation in potent immunostimulatory particles to induce an efficient immune response. This paper evaluates the capacity of β-glucan microparticles (GPs) as antigen vehicles and characterizes their immune-stimulatory effects. The relevant infectious antigen FedF was chosen to be loaded inside the microparticles. The incorporation of FedF inside the particles was highly efficient (roughly 85%) and occurred without antigen degradation. In addition, these GPs have immunostimulatory effects as well, demonstrated by the strong reactive oxygen species (ROS) production by porcine neutrophils upon their recognition. Although antigen-loaded GPs still induce ROS production, antigen loading decreases this production by neutrophils for reasons yet unknown. However, these antigen-loaded GPs are still able to bind their specific β-glucan receptor, demonstrated by blocking complement receptor 3, which is the major β-glucan receptor on porcine neutrophils. The dual character of these particles is confirmed by a T-cell proliferation assay. FedF-loaded particles induce a significantly higher FedF-specific T-cell proliferation than soluble FedF. Taken together, these results show that GPs are efficient antigen carriers with immune-stimulatory properties.
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Affiliation(s)
- Kim Baert
- Department of Virology, Parasitology and Immunology, Ghent University, Merelbeke, Ghent, Belgium
| | - Bruno G De Geest
- Department of Pharmaceutics, Ghent University, Merelbeke, Ghent, Belgium
| | - Henri De Greve
- Structural Biology Research Centre, VIB, Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Eric Cox
- Department of Virology, Parasitology and Immunology, Ghent University, Merelbeke, Ghent, Belgium
| | - Bert Devriendt
- Department of Virology, Parasitology and Immunology, Ghent University, Merelbeke, Ghent, Belgium
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Snook JD, Chesson CB, Peniche AG, Dann SM, Paulucci A, Pinchuk IV, Rudra JS. Peptide nanofiber–CaCO3 composite microparticles as adjuvant-free oral vaccine delivery vehicles. J Mater Chem B 2016; 4:1640-1649. [DOI: 10.1039/c5tb01623a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
To combat mucosal pathogens that cause gastrointestinal (GI) infections, local mucosal immunity is required which is best achieved through oral vaccination.
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Affiliation(s)
- Joshua D. Snook
- Department of Pharmacology & Toxicology
- University of Texas Medical Branch
- Galveston
- USA
| | - Charles B. Chesson
- Institute for Translation Sciences
- University of Texas Medical Branch
- Galveston
- USA
- Sealy Center for Vaccine Development
| | - Alex G. Peniche
- Department of Internal Medicine-Division of Infectious Diseases
- University of Texas Medical Branch
- Galveston
- USA
| | - Sara M. Dann
- Institute for Translation Sciences
- University of Texas Medical Branch
- Galveston
- USA
- Department of Internal Medicine-Division of Infectious Diseases
| | | | - Iryna V. Pinchuk
- Institute for Translation Sciences
- University of Texas Medical Branch
- Galveston
- USA
- Department of Internal Medicine-Division of Gastroenterology
| | - Jai S. Rudra
- Department of Pharmacology & Toxicology
- University of Texas Medical Branch
- Galveston
- USA
- Sealy Center for Vaccine Development
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Baert K, de Geest BG, de Rycke R, da Fonseca Antunes AB, de Greve H, Cox E, Devriendt B. β-glucan microparticles targeted to epithelial APN as oral antigen delivery system. J Control Release 2015; 220:149-159. [DOI: 10.1016/j.jconrel.2015.10.025] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 09/28/2015] [Accepted: 10/14/2015] [Indexed: 11/16/2022]
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13
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Liu SS, Liu LJ, Xiao LY, Lu Q, Zhu HS, Kaplan DL. Design of Silk-Vaterite Microsphere Systems as Drug Carriers with pH-responsive Release Behavior. J Mater Chem B 2015; 3:8314-8320. [PMID: 26693020 PMCID: PMC4675348 DOI: 10.1039/c5tb01692d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Improving the therapeutic efficacy of chemotherapy remains a key goal for cancer therapy. Various passive and active targeting strategies have been developed to facilitate drug release targeted to cancer lesions, but actively designing tunable drug release behavior for these needs remains a challenge. As a step towards this need, silk-vaterite microspheres were fabricated and utilized as carriers to tune drug release. Doxorubicin (DOX) was loaded on the microspheres with high efficiency and the release behavior was regulated by tuning the microspheres via thermal processing. In vitro cell inhibition results showed that the drug-loaded microspheres had different cytotoxic efficiencies depending on the DOX release rates. Better efficacy at lower drug doses suggests options to optimize anticancer effects while minimizing toxic side effects. The tunable drug release capacity combined with the inherent passive targeting property of vaterite-based carriers based on pH sensitivity suggests a promising system for enhanced efficacy of chemotherapy.
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Affiliation(s)
- S. S. Liu
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People’s Republic of China
| | - L. J. Liu
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People’s Republic of China
| | - L. Y. Xiao
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People’s Republic of China
| | - Q. Lu
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People’s Republic of China
| | - H. S. Zhu
- Research Center of Materials Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - D. L. Kaplan
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- Department of Biomedical Engineering, Tufts University, Medford, MA02155, USA
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Zhao W, Nugroho RW, Odelius K, Edlund U, Zhao C, Albertsson AC. In situ cross-linking of stimuli-responsive hemicellulose microgels during spray drying. ACS Appl Mater Interfaces 2015; 7:4202-15. [PMID: 25630464 PMCID: PMC4535707 DOI: 10.1021/am5084732] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 01/29/2015] [Indexed: 05/23/2023]
Abstract
Chemical cross-linking during spray drying offers the potential for green fabrication of microgels with a rapid stimuli response and good blood compatibility and provides a platform for stimuli-responsive hemicellulose microgels (SRHMGs). The cross-linking reaction occurs rapidly in situ at elevated temperature during spray drying, enabling the production of microgels in a large scale within a few minutes. The SRHMGs with an average size range of ∼ 1-4 μm contain O-acetyl-galactoglucomannan as a matrix and poly(acrylic acid), aniline pentamer (AP), and iron as functional additives, which are responsive to external changes in pH, electrochemical stimuli, magnetic field, or dual-stimuli. The surface morphologies, chemical compositions, charge, pH, and mechanical properties of these smart microgels were evaluated using scanning electron microscopy, IR, zeta potential measurements, pH evaluation, and quantitative nanomechanical mapping, respectively. Different oxidation states were observed when AP was introduced, as confirmed by UV spectroscopy and cyclic voltammetry. Systematic blood compatibility evaluations revealed that the SRHMGs have good blood compatibility. This bottom-up strategy to synthesize SRHMGs enables a new route to the production of smart microgels for biomedical applications.
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Affiliation(s)
- Weifeng Zhao
- Fiber
and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, 610065 Chengdu, China
| | - Robertus Wahyu
N. Nugroho
- Fiber
and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Karin Odelius
- Fiber
and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Ulrica Edlund
- Fiber
and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Changsheng Zhao
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, 610065 Chengdu, China
| | - Ann-Christine Albertsson
- Fiber
and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
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15
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Feng W, Yin Z, Wang W, Chen L, Zhou X, Qiu K, Zhou J, Zhang Y, He C. Synthesis and characterization of nanofibrous hollow microspheres with tunable size and morphology via thermally induced phase separation technique. RSC Adv 2015. [DOI: 10.1039/c5ra11525f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanofibrous hollow microspheres with tunable size and morphology were fabricated by using the thermally induced phase separation technique.
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Affiliation(s)
- Wei Feng
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Zhiqi Yin
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Weizhong Wang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Liang Chen
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Xiaojun Zhou
- College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Kexin Qiu
- College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Jianfeng Zhou
- Research Center for Analysis and Measurement
- Donghua University
- Shanghai 201620
- China
| | - Yanzhong Zhang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Chuanglong He
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
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16
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De Koker S, Fierens K, Dierendonck M, De Rycke R, Lambrecht BN, Grooten J, Remon JP, De Geest BG. Nanoporous polyelectrolyte vaccine microcarriers. A formulation platform for enhancing humoral and cellular immune responses. J Control Release 2014; 195:99-109. [PMID: 25078552 DOI: 10.1016/j.jconrel.2014.07.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/18/2014] [Accepted: 07/20/2014] [Indexed: 11/19/2022]
Abstract
In this paper we report on the design, characterization and immuno-biological evaluation of nanoporous polyelectrolyte microparticles as vaccine carrier. Relative to soluble antigen, formulation of antigen as a sub-10 μm particle can strongly enhance antigen-specific cellular immune responses. The latter is crucial to confer protective immunity against intracellular pathogens and for anti-cancer vaccines. However, a major bottleneck in microparticulate vaccine formulation is the development of generic strategies that afford antigen encapsulation under benign and scalable conditions. Our strategy is based on spray drying of a dilute aqueous solution of antigen, oppositely charged polyelectrolytes and mannitol as a pore-forming component. The obtained solid microparticles can be redispersed in aqueous medium, leading to leaching out of the mannitol, thereby creating a highly porous internal structure. This porous structure enhances enzymatic processing of encapsulated proteins. After optimizing the conditions to process these microparticles we demonstrate that they strongly enhance cross-presentation in vitro by dendritic cells to CD8 T cells. In vivo experiments in mice confirm that this vaccine formulation technology is capable of enhancing cellular immune responses.
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Affiliation(s)
- Stefaan De Koker
- Department of Pharmaceutics, Ghent University, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Zwijnaarde, Ghent, Belgium
| | - Kaat Fierens
- VIB Inflammation Research Center, University of Ghent, Ghent, Belgium; Department of Respiratory Medicine, University Hospital Ghent, Ghent, Belgium
| | | | - Riet De Rycke
- VIB Inflammation Research Center, University of Ghent, Ghent, Belgium; Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Bart N Lambrecht
- VIB Inflammation Research Center, University of Ghent, Ghent, Belgium; Department of Respiratory Medicine, University Hospital Ghent, Ghent, Belgium
| | - Johan Grooten
- Department of Biomedical Molecular Biology, Ghent University, Zwijnaarde, Ghent, Belgium
| | - Jean Paul Remon
- Department of Pharmaceutics, Ghent University, Ghent, Belgium
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