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Edmans JG, Murdoch C, Hatton PV, Madsen LS, Santocildes-Romero ME, Spain SG, Colley HE. Bioactive Protein and Peptide Release from a Mucoadhesive Electrospun Membrane. BIOMEDICAL MATERIALS & DEVICES (NEW YORK, N.Y.) 2023; 2:444-453. [PMID: 38425458 PMCID: PMC10899313 DOI: 10.1007/s44174-023-00098-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/03/2023] [Indexed: 03/02/2024]
Abstract
Protein-based biologics constitute a rapidly expanding category of therapeutic agents with high target specificity. Their clinical use has dramatically increased in recent years, but administration is largely via injection. Drug delivery across the oral mucosa is a promising alternative to injections, in order to avoid the gastrointestinal tract and first-pass metabolism. Current drug delivery formulations include liquid sprays, mucoadhesive tablets and films, which lack dose control in the presence of salivary flow. To address this, electrospun membranes that adhere tightly to the oral mucosa and release drugs locally have been developed. Here, we investigated the suitability of these mucoadhesive membranes for peptide or protein release. Bradykinin (0.1%) or insulin (1, 3, and 5%) were incorporated by electrospinning from ethanol/water mixtures. Immersion of membranes in buffer resulted in the rapid release of bradykinin, with a maximal release of 70 ± 12% reached after 1 h. In contrast, insulin was liberated more slowly, with 88 ± 11, 69.0 ± 5.4, and 63.9 ± 9.0% cumulative release of the total encapsulated dose after 8 h for membranes containing 1, 3, and 5% w/w insulin, respectively. Membrane-eluted bradykinin retained pharmacological activity by inducing rapid intracellular calcium release upon binding to its cell surface receptor on oral fibroblasts, when examined by flow cytometry. To quantify further, time-lapse confocal microscopy revealed that membrane-eluted bradykinin caused a 1.58 ± 0.16 fold-change in intracellular calcium fluorescence after 10 s compared to bradykinin solution (2.13 ± 0.21), relative to placebo. In conclusion, these data show that electrospun membranes may be highly effective vehicles for site-specific administration of biotherapeutic proteins or peptides directly to the oral mucosa for either local or systemic drug delivery applications.
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Affiliation(s)
- Jake G. Edmans
- School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA UK
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF UK
| | - Craig Murdoch
- School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA UK
| | - Paul V. Hatton
- School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA UK
| | | | | | - Sebastian G. Spain
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF UK
| | - Helen E. Colley
- School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA UK
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2
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Mazzinelli E, Favuzzi I, Arcovito A, Castagnola R, Fratocchi G, Mordente A, Nocca G. Oral Mucosa Models to Evaluate Drug Permeability. Pharmaceutics 2023; 15:pharmaceutics15051559. [PMID: 37242801 DOI: 10.3390/pharmaceutics15051559] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/02/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
Due to its numerous advantages, such as excellent drug accessibility, rapid absorption, and bypass of first-pass metabolism, the route of drug administration that involves crossing the oral mucosa is highly favored. As a result, there is significant interest in investigating the permeability of drugs through this region. The purpose of this review is to describe the various ex vivo and in vitro models used to study the permeability of conveyed and non-conveyed drugs through the oral mucosa, with a focus on the most effective models. Currently, there is a growing need for standardized models of this mucosa that can be used for developing new drug delivery systems. Oral Mucosa Equivalents (OMEs) may provide a promising future perspective as they are capable of overcoming limitations present in many existing models.
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Affiliation(s)
- Elena Mazzinelli
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
| | - Ilaria Favuzzi
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
| | - Alessandro Arcovito
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
- Fondazione Policlinico Universitario "A. Gemelli", IRCCS, Largo Agostino Gemelli 8, 00168 Roma, Italy
| | - Raffaella Castagnola
- UOC Odontoiatria Generale e Ortodonzia, Dipartimento Scienze dell'Invecchiamento, Neurologiche, Ortopediche e della Testa Collo, Fondazione Policlinico Universitario "A. Gemelli", IRCCS, Largo Agostino Gemelli 8, 00168 Rome, Italy
- Dipartimento di Testa-Collo e Organi di Senso, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli 8, 00168 Rome, Italy
| | - Giorgia Fratocchi
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
| | - Alvaro Mordente
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
- Fondazione Policlinico Universitario "A. Gemelli", IRCCS, Largo Agostino Gemelli 8, 00168 Roma, Italy
| | - Giuseppina Nocca
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Roma, Italy
- Fondazione Policlinico Universitario "A. Gemelli", IRCCS, Largo Agostino Gemelli 8, 00168 Roma, Italy
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3
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Electrospinning and its potential in fabricating pharmaceutical dosage form. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Stie MB, Gätke JR, Chronakis IS, Jacobsen J, Nielsen HM. Mucoadhesive Electrospun Nanofiber-Based Hybrid System with Controlled and Unidirectional Release of Desmopressin. Int J Mol Sci 2022; 23:ijms23031458. [PMID: 35163377 PMCID: PMC8836175 DOI: 10.3390/ijms23031458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/20/2022] [Accepted: 01/23/2022] [Indexed: 11/16/2022] Open
Abstract
The sublingual mucosa is an attractive route for drug delivery, although challenged by a continuous flow of saliva that leads to a loss of drug by swallowing. It is of great benefit that drugs absorbed across the sublingual mucosa avoid exposure to the harsh environment of the gastro-intestinal lumen; this is especially beneficial for drugs of low physicochemical stability such as therapeutic peptides. In this study, a two-layered hybrid drug delivery system was developed for the sublingual delivery of the therapeutic peptide desmopressin. It consisted of peptide-loaded mucoadhesive electrospun chitosan/polyethylene oxide-based nanofibers (mean diameter of 183 ± 20 nm) and a saliva-repelling backing film to promote unidirectional release towards the mucosa. Desmopressin was released from the nanofiber-based hybrid system (approximately 80% of the loaded peptide was released within 45 min) in a unidirectional manner in vitro. Importantly, the nanofiber-film hybrid system protected the peptide from wash-out, as demonstrated in an ex vivo flow retention model with porcine sublingual mucosal tissue. Approximately 90% of the loaded desmopressin was retained at the surface of the ex vivo porcine sublingual mucosa after 15 min of exposure to flow rates representing salivary flow.
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Affiliation(s)
- Mai Bay Stie
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark; (M.B.S.); (J.R.G.); (J.J.)
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Johan Ring Gätke
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark; (M.B.S.); (J.R.G.); (J.J.)
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Ioannis S. Chronakis
- DTU-Food, Technical University of Denmark, Kemitorvet, B202, 2800 Kongens Lyngby, Denmark;
| | - Jette Jacobsen
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark; (M.B.S.); (J.R.G.); (J.J.)
| | - Hanne Mørck Nielsen
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark; (M.B.S.); (J.R.G.); (J.J.)
- Center for Biopharmaceuticals and Biobarriers in Drug Delivery, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Correspondence:
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5
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Drug delivery using interpenetrating polymeric networks of natural polymers: A recent update. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102915] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Wang J, Li B, Huang D, Norat P, Grannonico M, Cooper RC, Gui Q, Chow WN, Liu X, Yang H. Nano-in-Nano Dendrimer Gel Particles for Efficient Topical Delivery of Antiglaucoma Drugs into the Eye. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2021; 425:130498. [PMID: 34121919 PMCID: PMC8194049 DOI: 10.1016/j.cej.2021.130498] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Low bioavailability of topically applied drugs remains a significant challenge for long-term glaucoma therapy. To enhance drug delivery efficiency, we developed dendrimer gel particles that collectively exhibit structural benefits of dendrimer, hydrogel, and particles, using the inverse emulsion method coupled with the highly efficient aza-Michael addition reaction (IEaMA). This hierarchical approach would maximize the utility of the structural features of existing ocular drug delivery systems. We have tested the delivery efficiency and efficacy of two first-line antiglaucoma drugs, brimonidine tartrate (BT) and timolol maleate (TM), which were loaded into dendrimer gel particles of various sizes, i.e., nDHP (nano-in-nano dendrimer hydrogel particles, ~200 nm), μDHP3 (3 μm), and μDHP10 (9 μm). We found that nDHP was superior to μDHP3 and μDHP10 in terms of cytocompatibility, degradability, drug release kinetics, and corneal permeability. The nDHPs increased drug corneal permeability by 17-fold compared to plain drug solution and enabled zero-order prolonged drug release kinetics. The nDHP-based formulation demonstrated pronounced IOP-lowering effects in both single-dose test and 7-day chronic daily dosing test in both Brown Norway rats and glaucoma mice. Taken together, we have developed nano-in-nano dendrimer gel particles for precise dosing and enabling sustained and synergistic efficacy of antiglaucoma drugs, which could be clinically impactful for improving glaucoma treatment.
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Affiliation(s)
- Juan Wang
- College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Boxuan Li
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China
| | - Da Huang
- Linda and Bipin Doshi Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Pedro Norat
- Department of Biology, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Marta Grannonico
- Department of Biology, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Remy C. Cooper
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Qin Gui
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Woon Nam Chow
- Department of Pathology, Virginia Commonwealth University, Richmond, Virginia 23298, United States
- Department of Ophthalmology, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Xiaorong Liu
- Department of Biology, University of Virginia, Charlottesville, Virginia 22904, United States
- Department of Psychology, University of Virginia, Charlottesville, Virginia 22904, United States
- Corresponding authors: (XL), (HY)
| | - Hu Yang
- Linda and Bipin Doshi Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
- Corresponding authors: (XL), (HY)
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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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8
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Sofi HS, Abdal-Hay A, Ivanovski S, Zhang YS, Sheikh FA. Electrospun nanofibers for the delivery of active drugs through nasal, oral and vaginal mucosa: Current status and future perspectives. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110756. [PMID: 32279775 DOI: 10.1016/j.msec.2020.110756] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 12/04/2019] [Accepted: 02/15/2020] [Indexed: 12/26/2022]
Abstract
Transmucosal surfaces bypass many limitations associated with conventional drug delivery (oral and parenteral routes), such as poor absorption rate, enzymatic activity, acidic environment and first-pass metabolism occurring inside the liver. However, these surfaces have several disadvantages such as poor retention time, narrow absorption window and continuous washout of the drug by the surrounding fluids. Electrospun nanofibers with their unique surface properties and encapsulation efficiency may act as novel drug carriers to overcome the challenges associated with conventional drug delivery routes, so as to achieve desired therapeutic responses. This review article provides detailed information regarding the challenges faced in the mucosal delivery of drugs, and the use of nanofiber systems as an alternative to deliver drugs to the systemic circulation, as well as local drug administration. The physiological and anatomical features of different types of mucosal surfaces and current challenges are systematically discussed. We also address future considerations in the area of transmucosal delivery of some important drugs.
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Affiliation(s)
- Hasham S Sofi
- Department of Nanotechnology, University of Kashmir, Hazratbal, Srinagar 190006, Jammu and Kashmir, India
| | - Abdalla Abdal-Hay
- The University of Queensland, School of Dentistry, Oral Health Centre Herston, 288 Herston Road, Herston QLD 4006, Australia; Department of Engineering Materials and Mechanical Design, Faculty of Engineering, South Valley University, Qena 83523, Egypt
| | - Saso Ivanovski
- The University of Queensland, School of Dentistry, Oral Health Centre Herston, 288 Herston Road, Herston QLD 4006, Australia
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, United States of America
| | - Faheem A Sheikh
- Department of Nanotechnology, University of Kashmir, Hazratbal, Srinagar 190006, Jammu and Kashmir, India.
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de Lima Nascimento TR, de Amoêdo Campos Velo MM, Silva CF, Costa Cruz SBS, Gondim BLC, Mondelli RFL, Castellano LRC. Current Applications of Biopolymer-based Scaffolds and Nanofibers as Drug Delivery Systems. Curr Pharm Des 2019; 25:3997-4012. [PMID: 31701845 DOI: 10.2174/1381612825666191108162948] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/01/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND The high surface-to-volume ratio of polymeric nanofibers makes them an effective vehicle for the release of bioactive molecules and compounds such as growth factors, drugs, herbal extracts and gene sequences. Synthetic polymers are commonly used as sensors, reinforcements and energy storage, whereas natural polymers are more prone to mimicking an extracellular matrix. Natural polymers are a renewable resource and classified as an environmentally friendly material, which might be used in different techniques to produce nanofibers for biomedical applications such as tissue engineering, implantable medical devices, antimicrobial barriers and wound dressings, among others. This review sheds some light on the advantages of natural over synthetic polymeric materials for nanofiber production. Also, the most important techniques employed to produce natural nanofibers are presented. Moreover, some pieces of evidence regarding toxicology and cell-interactions using natural nanofibers are discussed. Clearly, the potential extrapolation of such laboratory results into human health application should be addressed cautiously.
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Affiliation(s)
- Tatiana Rita de Lima Nascimento
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil
| | | | - Camila Félix Silva
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil
| | - Sara Brito Silva Costa Cruz
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil
| | - Brenna Louise Cavalcanti Gondim
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil.,Post-Graduation Program in Dentistry, Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil
| | - Rafael Francisco Lia Mondelli
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, SP, Brazil
| | - Lúcio Roberto Cançado Castellano
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil
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Jiaojiao Y, Sun C, Wei Y, Wang C, Dave B, Cao F, Liandong H. Applying emerging technologies to improve diabetes treatment. Biomed Pharmacother 2018; 108:1225-1236. [PMID: 30372824 DOI: 10.1016/j.biopha.2018.09.155] [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: 07/30/2018] [Revised: 09/18/2018] [Accepted: 09/26/2018] [Indexed: 10/28/2022] Open
Abstract
Insulin, as the most important drug for the treatment of diabetes, can effectively control the blood glucose concentration in humans. Due to its instability, short half-life, easy denaturation and side effects, the administration way of insulin are limited to subcutaneous injection accompany with poor glucose control and low patient compliance. In recent years, emerging insulin delivery systems have been developed in diabetes research. In this review, a variety of stimuli-responsive insulin delivery systems with their response mechanism and regulation principle are described. Further, the introduction of stem cell transplantation and mobile application based delivery technologies are prudent for the diabetes treatment. This article also discusses the advantages and limitations of current strategies, along with the opportunities and challenges for future insulin therapy.
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Affiliation(s)
- Yu Jiaojiao
- School of Pharmaceutical Sciences, Hebei University, Baoding, China; Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Caifeng Sun
- School of Pharmaceutical Sciences, Hebei University, Baoding, China; Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Yuli Wei
- School of Pharmaceutical Sciences, Hebei University, Baoding, China; Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Chaoying Wang
- School of Pharmaceutical Sciences, Hebei University, Baoding, China; Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | | | - Fei Cao
- School of Pharmaceutical Sciences, Hebei University, Baoding, China; Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Hu Liandong
- School of Pharmaceutical Sciences, Hebei University, Baoding, China; Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China.
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Aduba DC, An SS, Selders GS, Yeudall WA, Bowlin GL, Kitten T, Yang H. Electrospun gelatin–arabinoxylan ferulate composite fibers for diabetic chronic wound dressing application. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1482466] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Donald C. Aduba
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Seon-Sook An
- Philips Institute for Oral Health Research, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Gretchen S. Selders
- Department of Biomedical Engineering, University of Memphis, Memphis, Tennessee, USA
| | - W. Andrew Yeudall
- Department of Oral Biology, Augusta University, Augusta, Georgia, USA
| | - Gary L. Bowlin
- Department of Biomedical Engineering, University of Memphis, Memphis, Tennessee, USA
| | - Todd Kitten
- Philips Institute for Oral Health Research, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Hu Yang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia, USA
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, Virginia, USA
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia, USA
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12
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Thakkar S, Misra M. Electrospun polymeric nanofibers: New horizons in drug delivery. Eur J Pharm Sci 2017; 107:148-167. [DOI: 10.1016/j.ejps.2017.07.001] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 06/23/2017] [Accepted: 07/02/2017] [Indexed: 01/15/2023]
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13
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Folic acid-decorated polyamidoamine dendrimer exhibits high tumor uptake and sustained highly localized retention in solid tumors: Its utility for local siRNA delivery. Acta Biomater 2017; 57:251-261. [PMID: 28438704 DOI: 10.1016/j.actbio.2017.04.023] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 04/06/2017] [Accepted: 04/20/2017] [Indexed: 12/13/2022]
Abstract
The utility of folic acid (FA)-decorated polyamidoamine dendrimer G4 (G4-FA) as a vector was investigated for local delivery of siRNA. In a xenograft HN12 (or HN12-YFP) tumor mouse model of head and neck squamous cell carcinomas (HNSCC), intratumorally (i.t.) injected G4-FA exhibited high tumor uptake and sustained highly localized retention in the tumors according to near infrared (NIR) imaging assessment. siRNA against vascular endothelial growth factor A (siVEGFA) was chosen as a therapeutic modality. Compared to the nontherapeutic treatment groups (PBS solution or dendrimer complexed with nontherapeutic siRNA against green fluorescent protein (siGFP)), G4-FA/siVEGFA showed tumor inhibition effects in single-dose and two-dose regimen studies. In particular, two doses of G4-FA/siVEGFA i.t. administered eight days apart resulted in a more profound inhibition of tumor growth, accompanied with significant reduction in angiogenesis, as judged by CD31 staining and microvessel counts. Tumor size reduction in the two-dose regimen study was ascertained semi-quantitatively by live fluorescence imaging of YFP tumors and independently supported antitumor effects of G4-FA/siVEGFA. Taken together, G4-FA shows high tumor uptake and sustained retention properties, making it a suitable platform for local delivery of siRNAs to treat cancers that are readily accessible such as HNSCC. STATEMENT OF SIGNIFICANCE Head and neck squamous cell carcinoma (HNSCC) is the sixth most common cancer worldwide and is difficult to transfect for gene therapy. We developed folate receptor (FR)-targeted polyamidoamine (PAMAM) dendrimer for enhanced delivery of genes to HNSCC and gained in-depth understanding of how gene delivery and transfection in head and neck squamous cancer cells can be enhanced via FR-targeted PAMAM dendrimers. The results we report here are encouraging and present latest advances in using dendrimers for cancer therapies, in particular for HNSCC. Our work has demonstrated that localized delivery of FR-targeted PAMAM dendrimer G4 complexed with siVEGFA resulted in pronounced tumor suppression in an HN12 xenograft tumor model. Tumor suppression was attributed to enhanced tumor uptake of siRNA and prolonged nanoparticle retention in the tumor. Taken together, G4-FA shows high tumor uptake and sustained highly localized retention properties, making it a suitable platform for local delivery of siRNAs to treat cancers that are readily accessible such as HNSCC.
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15
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Xu L, Cooper RC, Wang J, Yeudall WA, Yang H. Synthesis and Application of Injectable Bioorthogonal Dendrimer Hydrogels for Local Drug Delivery. ACS Biomater Sci Eng 2017; 3:1641-1653. [PMID: 29147682 DOI: 10.1021/acsbiomaterials.7b00166] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We developed novel dendrimer hydrogels (DH)s on the basis of bioorthogonal chemistry, in which polyamidoamine (PAMAM) dendrimer generation 4.0 (G4) functionalized with strained alkyne dibenzocyclooctyne (DBCO) via PEG spacer (Mn = 2,000 g/mol) underwent strain-promoted azide-alkyne cycloaddition (SPAAC) with polyethylene glycol bisazide (PEG-BA) (Mn= 20,000 g/mol) to generate a dendrimer-PEG cross-linked network. This platform offers a high degree of functionality and modularity. A wide range of structural parameters including dendrimer generation, degree of PEGylation, loading density of clickable DBCO groups, PEG-BA chain length as well as the ratio of clickable dendrimer to PEG-BA and their concentrations can be readily manipulated to tune chemical and physical properties of DHs. We used this platform to prepare an injectable liquid DH. This bioorthogonal DH exhibited high cytocompatibility and enabled sustained release of the anticancer drug 5-fluorouracil (5-FU). Following intratumoral injection, the DH/5-FU formulation significantly suppressed tumor growth and improved survival of HN12 tumor-bearing mice by promoting tumor cell death as well as by reducing tumor cell proliferation and angiogenesis.
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Affiliation(s)
- Leyuan Xu
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 737 North 5 Street, Richmond, Virginia 23219, United States
| | - Remy C Cooper
- Department of Biomedical Engineering, 601 West Main Street, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Juan Wang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 737 North 5 Street, Richmond, Virginia 23219, United States
| | - W Andrew Yeudall
- Department of Oral Biology, Augusta University, 1120 15 Street, Augusta, Georgia 30912, United States.,Molecular Oncology and Biomarkers Program, Georgia Cancer Center, 1410 Laney Walker Blvd, Augusta University, Augusta, Georgia 30912, United States
| | - Hu Yang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 737 North 5 Street, Richmond, Virginia 23219, United States.,Department of Pharmaceutics, Virginia Commonwealth University, 410 North 12th Street, Richmond, Virginia 23298, United States.,Massey Cancer Center, Virginia Commonwealth University, 401 College Street, Richmond, Virginia 23298, United States
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16
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Mackie AR, Goycoolea FM, Menchicchi B, Caramella CM, Saporito F, Lee S, Stephansen K, Chronakis IS, Hiorth M, Adamczak M, Waldner M, Nielsen HM, Marcelloni L. Innovative Methods and Applications in Mucoadhesion Research. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600534] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/10/2017] [Indexed: 01/03/2023]
Affiliation(s)
- Alan R. Mackie
- Institute of Food Research; Norwich Research Park Norwich NR4 7UA UK
- School of Food Science and Nutrition; University of Leeds; LS2 9JT Leeds UK
| | - Francisco M. Goycoolea
- School of Food Science and Nutrition; University of Leeds; LS2 9JT Leeds UK
- Institut für Biologie und Biotechnologie der Pflanzen; Westfälische Wilhelms-Universität Münster; Schlossgarten 3 48149 Münster Germany
| | - Bianca Menchicchi
- Department of Medicine 1; University of Erlangen-Nueremberg; Hartmanstrasse 14 91052 Erlangen Germany
- Nanotechnology Group; Department of Plant Biology and Biotechnology; University of Münster; Schlossgarten 3 48149 Münster Germany
| | | | - Francesca Saporito
- Department of Drug Sciences; University of Pavia; Via Taramelli, 12 27100 Pavia Italy
| | - Seunghwan Lee
- Department of Mechanical Engineering; Technical University of Denmark; Produktionstorvet 2800 Kgs Lyngby Copenhagen Denmark
| | - Karen Stephansen
- National Food Institute; Technical University of Denmark; Søltofts Plads, 2800 Kgs Lyngby Copenhagen Denmark
| | - Ioannis S. Chronakis
- National Food Institute; Technical University of Denmark; Søltofts Plads, 2800 Kgs Lyngby Copenhagen Denmark
| | - Marianne Hiorth
- School of Pharmacy; University of Oslo; Postboks 1068 Blindern 0316 OSLO Norway
| | - Malgorzata Adamczak
- School of Pharmacy; University of Oslo; Postboks 1068 Blindern 0316 OSLO Norway
| | - Max Waldner
- Medizinische Klinik 1; Ulmenweg 18 91054 Erlangen Germany
| | - Hanne Mørck Nielsen
- Department of Pharmacy; University of Copenhagen; Universitetsparken 2 2100 Copenhagen Denmark
| | - Luciano Marcelloni
- S.I.I.T. S.r.l Pharmaceutical & Health Food Supplements; Via Canova 5/7-20090 Trezzano S/N Milan Italy
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17
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Babitha S, Rachita L, Karthikeyan K, Shoba E, Janani I, Poornima B, Purna Sai K. Electrospun protein nanofibers in healthcare: A review. Int J Pharm 2017; 523:52-90. [PMID: 28286080 DOI: 10.1016/j.ijpharm.2017.03.013] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 03/06/2017] [Accepted: 03/07/2017] [Indexed: 12/11/2022]
Abstract
Electrospun nanofibers are being utilized for a wide range of healthcare applications. A plethora of natural and synthetic polymers are exploited for their ability to be electrospun and replace the complex habitat provided by the extracellular matrix for the cells. The fabrication of nanofibers can be tuned to act as a multicarrier system to deliver drugs, growth factors and health supplements etc. in a sustained manner. Owing to its pliability, nanofibers reached its heights in tissue engineering and drug delivery applications. This review mainly focuses on various standardized parameters and optimized blending ratios for animal and plant proteins to yield fine, continuous nanofibers for effective utilization in various healthcare applications.
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Affiliation(s)
- S Babitha
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - Lakra Rachita
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - K Karthikeyan
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - Ekambaram Shoba
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - Indrakumar Janani
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - Balan Poornima
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India
| | - K Purna Sai
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, India.
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18
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Lancina MG, Shankar RK, Yang H. Chitosan nanofibers for transbuccal insulin delivery. J Biomed Mater Res A 2017; 105:1252-1259. [PMID: 28000386 DOI: 10.1002/jbm.a.35984] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/28/2016] [Accepted: 12/14/2016] [Indexed: 12/14/2022]
Abstract
In this work, they aimed at producing chitosan based nanofiber mats capable of delivering insulin via the buccal mucosa. Chitosan was electrospun into nanofibers using poly(ethylene oxide) (PEO) as a carrier molecule in various feed ratios. The mechanical properties and degradation kinetics of the fibers were measured. Insulin release rates were determined in vitro using an ELISA assay. The bioactivity of released insulin was measured in terms of Akt activation in pre-adipocytes. Insulin permeation across the buccal mucosa was measured in an ex-vivo porcine transbuccal model. Fiber morphology, mechanical properties, and in vitro stability were dependent on PEO feed ratio. Lower PEO content blends produced smaller diameter fibers with significantly faster insulin release kinetics. Insulin showed no reduction in bioactivity due to electrospinning. Buccal permeation of insulin facilitated by high chitosan content blends was significantly higher than that of free insulin. Taken together, the work demonstrates that chitosan-based nanofibers have the potential to serve as a transbuccal insulin delivery vehicle. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1252-1259, 2017.
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Affiliation(s)
- Michael G Lancina
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, 23284
| | - Roopa Kanakatti Shankar
- Division of Endocrinology, Children's Hospital of Richmond at VCU, Center for Endocrinology, Diabetes and Metabolism, Virginia Commonwealth University, Richmond, Virginia, 23229
| | - Hu Yang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia, 23219.,Department of Pharmaceutics, Virginia Commonwealth University, Richmond, Virginia, 23298.,Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia, 23298
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19
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Padmakumar S, Joseph J, Neppalli MH, Mathew SE, Nair SV, Shankarappa SA, Menon D. Electrospun Polymeric Core-sheath Yarns as Drug Eluting Surgical Sutures. ACS APPLIED MATERIALS & INTERFACES 2016; 8:6925-34. [PMID: 26936629 DOI: 10.1021/acsami.6b00874] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Drug-coated sutures are widely used as delivery depots for antibiotics and anti-inflammatory drugs at surgical wound sites. Although drug-laden coating provides good localized drug concentration, variable loading efficiency and release kinetics limits its use. Alternatively, drug incorporation within suture matrices is hampered by the harsh fabrication conditions required for suture-strength enhancement. To circumvent these limitations, we fabricated mechanically robust electrospun core-sheath yarns as sutures, with a central poly-l-lactic acid core, and a drug-eluting poly-lactic-co-glycolic acid sheath. The electrospun sheath was incorporated with aceclofenac or insulin to demonstrate versatility of the suture in loading both chemical and biological class of drugs. Aceclofenac and insulin incorporated sutures exhibited 15% and 4% loading, and release for 10 and 7 days, respectively. Aceclofenac sutures demonstrated reduced epidermal hyperplasia and cellularity in skin-inflammation animal model, while insulin loaded sutures showed enhanced cellular migration in wound healing assay. In conclusion, we demonstrate an innovative strategy of producing mechanically strong, prolonged drug-release sutures loaded with different classes of drugs.
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Affiliation(s)
- Smrithi Padmakumar
- Amrita Centre for Nanosciences & Molecular Medicine, Amrita Institute of Medical Sciences & Research Centre, Amrita Vishwa Vidyapeetham , Kochi 682041, Kerala, India
| | - John Joseph
- Amrita Centre for Nanosciences & Molecular Medicine, Amrita Institute of Medical Sciences & Research Centre, Amrita Vishwa Vidyapeetham , Kochi 682041, Kerala, India
| | - Madhuri Harsha Neppalli
- Amrita Centre for Nanosciences & Molecular Medicine, Amrita Institute of Medical Sciences & Research Centre, Amrita Vishwa Vidyapeetham , Kochi 682041, Kerala, India
| | - Sumi Elizabeth Mathew
- Amrita Centre for Nanosciences & Molecular Medicine, Amrita Institute of Medical Sciences & Research Centre, Amrita Vishwa Vidyapeetham , Kochi 682041, Kerala, India
| | - Shantikumar V Nair
- Amrita Centre for Nanosciences & Molecular Medicine, Amrita Institute of Medical Sciences & Research Centre, Amrita Vishwa Vidyapeetham , Kochi 682041, Kerala, India
| | - Sahadev A Shankarappa
- Amrita Centre for Nanosciences & Molecular Medicine, Amrita Institute of Medical Sciences & Research Centre, Amrita Vishwa Vidyapeetham , Kochi 682041, Kerala, India
| | - Deepthy Menon
- Amrita Centre for Nanosciences & Molecular Medicine, Amrita Institute of Medical Sciences & Research Centre, Amrita Vishwa Vidyapeetham , Kochi 682041, Kerala, India
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20
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Alibolandi M, Alabdollah F, Sadeghi F, Mohammadi M, Abnous K, Ramezani M, Hadizadeh F. Dextran-b-poly(lactide-co-glycolide) polymersome for oral delivery of insulin: In vitro and in vivo evaluation. J Control Release 2016; 227:58-70. [PMID: 26907831 DOI: 10.1016/j.jconrel.2016.02.031] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 12/19/2022]
Abstract
Insulin is the first line therapy in type 1 diabetes and usually patients suffer from three or more daily insulin injections. It is obvious that patient compliance can be improved greatly if insulin could be formulated in an oral dosage form. In the current study, polymersomes based on amphiphilic copolymers of dextran (DEX)5000-poly(lactic-co-glycolic acid) (PLGA)13,000 and DEX25000-PLGA48000 were synthesized and used for the encapsulation of insulin. The polymersomes were prepared using a modified direct hydration method by blending an aqueous solution of insulin with DEX-PLGA copolymers at room temperature. The in vitro insulin release through the nanopolymersomal system was studied in HCl 0.1N (pH1.2) and phosphate buffered saline (pH7.4). The results demonstrated that the average insulin encapsulation efficiency was >90%. The in vitro release experiment demonstrated that while insulin release in the simulated gastric condition was negligible, a significant amount of insulin was released in the simulated intestinal condition. According to the results of a circular dichroism test, secondary and tertiary structures of the released insulin were identical to that of standard insulin. Permeability studies across MDCK cells showed that permeability levels after 240 min were 16.89 ± 0.39% with DEX5000-PLGA13000 and 9.34 ± 0.79% with DEX25000-PLGA48000, indicating a noticeable increase compared with free insulin. Significant hypoglycemic effects in the in vivo diabetic rat model revealed the efficacy of the DEX-PLGA-based polymersomes as oral insulin carriers. Thus, insulin-loaded, self-assembled DEX-PLGA polymersomes showed promising in vitro and in vivo efficiency and can be considered as a potential oral insulin carrier system.
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Affiliation(s)
- Mona Alibolandi
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Alabdollah
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Sadeghi
- Targeted Drug Delivery Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Marzieh Mohammadi
- Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Farzin Hadizadeh
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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21
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Vellayappan MV, Venugopal JR, Ramakrishna S, Ray S, Ismail AF, Mandal M, Manikandan A, Seal S, Jaganathan SK. Electrospinning applications from diagnosis to treatment of diabetes. RSC Adv 2016. [DOI: 10.1039/c6ra15252j] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Modern applications of electrospinning.
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Affiliation(s)
- M. V. Vellayappan
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru
- Malaysia
| | - J. R. Venugopal
- Center for Nanofibers & Nanotechnology Initiative
- Department of Mechanical Engineering
- National University of Singapore
- Singapore
| | - S. Ramakrishna
- Center for Nanofibers & Nanotechnology Initiative
- Department of Mechanical Engineering
- National University of Singapore
- Singapore
| | - S. Ray
- MBIE NZ Product Accelerator and Biocide Toolbox Programmes
- School of Chemical Sciences
- The University of Auckland
- Auckland 1142
- New Zealand
| | - A. F. Ismail
- Advanced Membrane Technology Research Centre (AMTEC)
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - M. Mandal
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- West Bengal 721302
- India
| | - A. Manikandan
- Department of Chemistry
- Bharath University
- Chennai
- India
| | - S. Seal
- NanoScience Technology Center
- University of Central Florida Engineering
- Orlando
- USA
| | - S. K. Jaganathan
- Department for Management of Science and Technology Development
- Ton Duc Thang University
- Ho Chi Minh City
- Vietnam
- Faculty of Applied Sciences
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22
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Zhang P, Xu Y, Zhu X, Huang Y. Goblet cell targeting nanoparticle containing drug-loaded micelle cores for oral delivery of insulin. Int J Pharm 2015; 496:993-1005. [PMID: 26541299 DOI: 10.1016/j.ijpharm.2015.10.078] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 10/10/2015] [Accepted: 10/30/2015] [Indexed: 12/28/2022]
Abstract
Oral administration of insulin remains a challenge due to its poor enzymatic stability and inefficient permeation across epithelium. We herein developed a novel self-assembled polyelectrolyte complex nanoparticles by coating insulin-loaded dodecylamine-graft-γ-polyglutamic acid micelles with trimethyl chitosan (TMC). The TMC material was also conjugated with a goblet cell-targeting peptide to enhance the affinity of nanoparticles with epithelium. The developed nanoparticle possessed significantly enhanced colloid stability, drug protection ability and ameliorated drug release profile compared with graft copolymer micelles or ionic crosslinked TMC nanoparticles. For in vitro evaluation, Caco-2/HT29-MTX-E12 cell co-cultures, which composed of not only enterocyte-like cells but also mucus-secreting cells and secreted mucus layer, were applied to mimic the epithelium. Intracellular uptake and transcellular permeation of encapsulated drug were greatly enhanced for NPs as compared with free insulin or micelles. Goblet cell-targeting modification further increased the affinity of NPs with epithelium with changed cellular internalization mechanism. The influence of mucus on the cell uptake was also investigated. Ex vivo performed with rat mucosal tissue demonstrated that the nanoparticle could facilitate the permeation of encapsulated insulin across the intestinal epithelium. In vivo study preformed on diabetic rats showed that the orally administered nanoparticles elicited a prolonged hypoglycemic response with relative bioavailability of 7.05%.
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Affiliation(s)
- Peiwen Zhang
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministry of Education), West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041,China; People' Hospital of Deyang City, No. 173, Northern Taishan Road, Deyang 618000, China
| | - Yining Xu
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministry of Education), West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041,China
| | - Xi Zhu
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministry of Education), West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041,China
| | - Yuan Huang
- Key Laboratory of Drug Targeting and Drug Delivery System (Ministry of Education), West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041,China.
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23
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Bioactive protein-based nanofibers interact with intestinal biological components resulting in transepithelial permeation of a therapeutic protein. Int J Pharm 2015; 495:58-66. [PMID: 26320547 DOI: 10.1016/j.ijpharm.2015.08.076] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 08/24/2015] [Accepted: 08/24/2015] [Indexed: 12/29/2022]
Abstract
Proteins originating from natural sources may constitute a novel type of material for use in drug delivery. However, thorough understanding of the behavior and effects of such a material when processed into a matrix together with a drug is crucial prior to further development into a drug product. In the present study the potential of using bioactive electrospun fish sarcoplasmic proteins (FSP) as a carrier matrix for small therapeutic proteins was demonstrated in relation to the interactions with biological components of the intestinal tract. The inherent structural and chemical properties of FSP as a biomaterial facilitated interactions with cells and enzymes found in the gastrointestinal tract and displayed excellent biocompatibility. More specifically, insulin was efficiently encapsulated into FSP fibers maintaining its conformation, and subsequent controlled release was obtained in simulated intestinal fluid. The encapsulation of insulin into FSP fibers provided protection against chymotrypsin degradation, and resulted in an increase in insulin transport to around 12% without compromising the cellular viability. This increased transport was driven by interactions upon contact between the nanofibers and the Caco-2 cell monolayer leading to the opening of the tight junction proteins. Overall, electrospun FSP may constitute a novel material for oral delivery of biopharmaceuticals.
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24
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Wang Y, Li ZW, Luo M, Li YJ, Zhang KQ. Biological conduits combining bone marrow mesenchymal stem cells and extracellular matrix to treat long-segment sciatic nerve defects. Neural Regen Res 2015. [PMID: 26199615 PMCID: PMC4498360 DOI: 10.4103/1673-5374.158362] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The transplantation of polylactic glycolic acid conduits combining bone marrow mesenchymal stem cells and extracellular matrix gel for the repair of sciatic nerve injury is effective in some respects, but few data comparing the biomechanical factors related to the sciatic nerve are available. In the present study, rabbit models of 10-mm sciatic nerve defects were prepared. The rabbit models were repaired with autologous nerve, a polylactic glycolic acid conduit + bone marrow mesenchymal stem cells, or a polylactic glycolic acid conduit + bone marrow mesenchymal stem cells + extracellular matrix gel. After 24 weeks, mechanical testing was performed to determine the stress relaxation and creep parameters. Following sciatic nerve injury, the magnitudes of the stress decrease and strain increase at 7,200 seconds were largest in the polylactic glycolic acid conduit + bone marrow mesenchymal stem cells + extracellular matrix gel group, followed by the polylactic glycolic acid conduit + bone marrow mesenchymal stem cells group, and then the autologous nerve group. Hematoxylin-eosin staining demonstrated that compared with the polylactic glycolic acid conduit + bone marrow mesenchymal stem cells group and the autologous nerve group, a more complete sciatic nerve regeneration was found, including good myelination, regularly arranged nerve fibers, and a completely degraded and resorbed conduit, in the polylactic glycolic acid conduit + bone marrow mesenchymal stem cells + extracellular matrix gel group. These results indicate that bridging 10-mm sciatic nerve defects with a polylactic glycolic acid conduit + bone marrow mesenchymal stem cells + extracellular matrix gel construct increases the stress relaxation under a constant strain, reducing anastomotic tension. Large elongations under a constant physiological load can limit the anastomotic opening and shift, which is beneficial for the regeneration and functional reconstruction of sciatic nerve. Better regeneration was found with the polylactic glycolic acid conduit + bone marrow mesenchymal stem cells + extracellular matrix gel grafts than with the polylactic glycolic acid conduit + bone marrow mesenchymal stem cells grafts and the autologous nerve grafts.
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Affiliation(s)
- Yang Wang
- Department of Orthopedics, China-Japan Friendship Hospital, Jilin University, Changchun, Jilin Province, China
| | - Zheng-Wei Li
- Department of Orthopedics, Second Hospital, Jilin University, Changchun, Jilin Province, China
| | - Min Luo
- Department of Orthopedics, China-Japan Friendship Hospital, Jilin University, Changchun, Jilin Province, China
| | - Ya-Jun Li
- Mathematics School, Jilin University, Changchun, Jilin Province, China
| | - Ke-Qiang Zhang
- Department of Orthopedics, Second Hospital, Jilin University, Changchun, Jilin Province, China
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25
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Xu L, Sheybani N, Yeudall WA, Yang H. The effect of photoinitiators on intracellular AKT signaling pathway in tissue engineering application. Biomater Sci 2015; 3:250-5. [PMID: 25709809 PMCID: PMC4335638 DOI: 10.1039/c4bm00245h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Free-radical photopolymerization initiated by photoinitiators is an important method to make tissue engineering scaffolds. To advance understanding of photoinitiator cytocompatibility, we examined three photoinitiators including 2,2-dimethoxy-2-phenylacetophenone (DMPA), Irgacure 2959 (I-2959), and eosin Y photoinitiating system (EY) in terms of their effects on viability of HN4 cells and expression levels of intracellular AKT and its phosphorylated form p-AKT. Our results show that the photoinitiators and their UV-exposed counterparts affect intracellular AKT signaling, which can be used in conjunction with cell viability for cytocompatibility assessment of photoinitiators.
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Affiliation(s)
- Leyuan Xu
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284
| | - Natasha Sheybani
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284
| | - W. Andrew Yeudall
- Philips Institute of Oral and Craniofacial Molecular Biology, Virginia Commonwealth University, Richmond, Virginia 23298
- Massey Cancer Center; Virginia Commonwealth University, Richmond, Virginia 23298
| | - Hu Yang
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284
- Massey Cancer Center; Virginia Commonwealth University, Richmond, Virginia 23298
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