151
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Sajeesh S, Sharma CP. Poly Methacrylic Acid-Alginate Semi-IPN Microparticles for Oral Delivery of Insulin: A Preliminary Investigation. J Biomater Appl 2016; 19:35-45. [PMID: 15245642 DOI: 10.1177/0885328204042992] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Microparticles of Poly methacrylic acid (P1) and novel semi-interpenetrating network composed of Poly methacrylic acid-alginate (P2) were prepared and their application in oral insulin delivery was evaluated. The microparticles were characterized by scanning electron microscopy (SEM) for morphological studies. Insulin loading onto the microparticles was performed by the diffusion filling method and insulin encapsulated microparticles were subjected to in vitro release study in buffer solution of pH 1.2 and 7.4. The release kinetics at pH 7.4 exhibited sustained release of insulin for more than 5 h in case of PMAA microparticles whereas burst release of insulin (90% of total insulin loaded) within 1 h of study was observed in the case of PMAA-alginate microparticles. At pH 1.2, around 30% of insulin loaded was released from both microparticles within 2 h of study.
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Affiliation(s)
- S Sajeesh
- Division of Biosurface Technology, Bio Medical Technology Wing, Sree Chitra Tirunal Institute of Medical Science and Technology, Trivandrum-695 012, India
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152
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Niu X, Liu Z, Hu J, Rambhia KJ, Fan Y, Ma PX. Microspheres Assembled from Chitosan-Graft-Poly(lactic acid) Micelle-Like Core-Shell Nanospheres for Distinctly Controlled Release of Hydrophobic and Hydrophilic Biomolecules. Macromol Biosci 2016; 16:1039-47. [PMID: 26987445 PMCID: PMC4931955 DOI: 10.1002/mabi.201600020] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Indexed: 01/09/2023]
Abstract
To simultaneously control inflammation and facilitate dentin regeneration, a copolymeric micelle-in-microsphere platform is developed in this study, aiming to simultaneously release a hydrophobic drug to suppress inflammation and a hydrophilic biomolecule to enhance odontogenic differentiation of dental pulp stem cells in a distinctly controlled fashion. A series of chitosan-graft-poly(lactic acid) copolymers is synthesized with varying lactic acid and chitosan weight ratios, self-assembled into nanoscale micelle-like core-shell structures in an aqueous system, and subsequently crosslinked into microspheres through electrostatic interaction with sodium tripolyphosphate. A hydrophobic biomolecule either coumarin-6 or fluocinolone acetonide (FA) is encapsulated into the hydrophobic cores of the micelles, while a hydrophilic biomolecule either bovine serum albumin or bone morphogenetic protein 2 (BMP-2) is entrapped in the hydrophilic shells and the interspaces among the micelles. Both hydrophobic and hydrophilic biomolecules are delivered with distinct and tunable release patterns. Delivery of FA and BMP-2 simultaneously suppresses inflammation and enhances odontogenesis, resulting in significantly enhanced mineralized tissue regeneration. This result also demonstrates the potential for this novel delivery system to deliver multiple therapeutics and to achieve synergistic effects.
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Affiliation(s)
- Xufeng Niu
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI 48109, USA. Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China
| | - Zhongning Liu
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI 48109, USA. Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Jiang Hu
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI 48109, USA
| | - Kunal J. Rambhia
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China
| | - Peter X. Ma
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI 48109, USA. Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA. Macromolecular Science and Engineering Center, Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA, Tel: 1 (734) 764-2209
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153
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Facile synthesis of amphiphilic poly(ethylene glycol) conjugate and its micellization as injectable targeted vehicle for DOX. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.03.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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154
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Ren WJ, Zhang AQ, Qin SY, Li ZK. Synthesis and evaluation of a novel cationic konjac glucomannan-based flocculant. Carbohydr Polym 2016; 144:238-44. [DOI: 10.1016/j.carbpol.2016.02.061] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 12/19/2015] [Accepted: 02/20/2016] [Indexed: 11/27/2022]
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155
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Biocompatible Zr-based nanoscale MOFs coated with modified poly(ε-caprolactone) as anticancer drug carriers. Int J Pharm 2016; 509:208-218. [PMID: 27235556 DOI: 10.1016/j.ijpharm.2016.05.048] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 05/22/2016] [Accepted: 05/25/2016] [Indexed: 11/24/2022]
Abstract
Nanoscale Zr-based metal organic frameworks (MOFs) UiO-66 and UiO-67 were studied as potential anticancer drug delivery vehicles. Two model drugs were used, hydrophobic paclitaxel and hydrophilic cisplatin, and were adsorbed onto/into the nano MOFs (NMOFs). The drug loaded MOFs were further encapsulated inside a modified poly(ε-caprolactone) with d-α-tocopheryl polyethylene glycol succinate polymeric matrix, in the form of microparticles, in order to prepare sustained release formulations and to reduce the drug toxicity. The drugs physical state and release rate was studied at 37°C using Simulated Body Fluid. It was found that the drug release depends on the interaction between the MOFs and the drugs while the controlled release rates can be attributed to the microencapsulated formulations. The in vitro antitumor activity was assessed using HSC-3 (human oral squamous carcinoma; head and neck) and U-87 MG (human glioblastoma grade IV; astrocytoma) cancer cells. Cytotoxicity studies for both cell lines showed that the polymer coated, drug loaded MOFs exhibited better anticancer activity compared to free paclitaxel and cisplatin solutions at different concentrations.
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156
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Malekzadeh BÖ, Ransjo M, Tengvall P, Mladenovic Z, Westerlund A. Insulin released from titanium discs with insulin coatings-Kinetics and biological activity. J Biomed Mater Res B Appl Biomater 2016; 105:1847-1854. [DOI: 10.1002/jbm.b.33717] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 05/04/2016] [Accepted: 05/09/2016] [Indexed: 02/01/2023]
Affiliation(s)
- B. Ö. Malekzadeh
- Department of Orthodontics; Institute of Odontology, Sahlgrenska Academy, University of Gothenburg; Gothenburg Sweden
- Department of Oral and Maxillofacial Surgery; Mölndal Hospital; Sweden
- Department of Biomaterials; Sahlgrenska Academy, University of Gothenburg; Gothenburg Sweden
| | - M. Ransjo
- Department of Orthodontics; Institute of Odontology, Sahlgrenska Academy, University of Gothenburg; Gothenburg Sweden
| | - P. Tengvall
- Department of Biomaterials; Sahlgrenska Academy, University of Gothenburg; Gothenburg Sweden
| | - Z. Mladenovic
- Department of Orthodontics; Institute of Odontology, Sahlgrenska Academy, University of Gothenburg; Gothenburg Sweden
| | - A. Westerlund
- Department of Orthodontics; Institute of Odontology, Sahlgrenska Academy, University of Gothenburg; Gothenburg Sweden
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157
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Armendáriz-Barragán B, Zafar N, Badri W, Galindo-Rodríguez SA, Kabbaj D, Fessi H, Elaissari A. Plant extracts: from encapsulation to application. Expert Opin Drug Deliv 2016; 13:1165-75. [PMID: 27139509 DOI: 10.1080/17425247.2016.1182487] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Plants are a natural source of various products with diverse biological activities offering treatment for several diseases. Plant extract is a complex mixture of compounds, which can have antioxidant, antibiotic, antiviral, anticancer, antiparasitic, antifungal, hypoglycemic, anti-hypertensive and insecticide properties. The extraction of these extracts requires the use of organic solvents, which not only complicates the formulations but also makes it difficult to directly use the extracts for humans. To overcome these problems, recent research has been focused on developing new ways to formulate the plant extracts and delivering them safely with enhanced therapeutic efficacy. AREAS COVERED This review focuses on the research done in the development and use of polymeric nanoparticles for the encapsulation and administration of plant extracts. It describes in detail, the different encapsulation techniques, main physicochemical characteristics of the nanoparticles, toxicity tests and results obtained from in vivo or in vitro assays. EXPERT OPINION Major obstacles associated with the use of plant extracts for clinical applications include their complex composition, toxicity risks and extract instability. It is observed that encapsulation can be successfully used to decrease plant extracts toxicity, to provide targeted drug delivery and to solve stability related problems.
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Affiliation(s)
- Brenda Armendáriz-Barragán
- a Departamento de Química Analítica, Facultad de Ciencias Biológicas , Universidad Autónoma de Nuevo León , San Nicolás de los Garza , México.,b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
| | - Nadiah Zafar
- b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
| | - Waisudin Badri
- b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
| | - Sergio Arturo Galindo-Rodríguez
- a Departamento de Química Analítica, Facultad de Ciencias Biológicas , Universidad Autónoma de Nuevo León , San Nicolás de los Garza , México
| | - Dounia Kabbaj
- c Department of Agronomy and Life Science, Universiapolis , International University of Agadir , Agadir , Morocco
| | - Hatem Fessi
- b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
| | - Abdelhamid Elaissari
- b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
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158
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Zafar N, Agusti G, Fessi H, Elaissari A. Elaboration of sponge-like biodegradable cationic particles via double-emulsion solvent evaporation. J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2016.1182923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Nadiah Zafar
- University Lyon-1, UMR 5007, LAGEP-CPE, Villeurbanne, France
| | | | - Hatem Fessi
- University Lyon-1, UMR 5007, LAGEP-CPE, Villeurbanne, France
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159
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Acar H, Banerjee S, Shi H, Jamshidi R, Hashemi N, Cho MW, Montazami R. Transient Biocompatible Polymeric Platforms for Long-Term Controlled Release of Therapeutic Proteins and Vaccines. MATERIALS (BASEL, SWITZERLAND) 2016; 9:321. [PMID: 28546855 PMCID: PMC5441878 DOI: 10.3390/ma9050321] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 04/22/2016] [Indexed: 11/29/2022]
Abstract
Polymer-based interpenetrating networks (IPNs) with controllable and programmable degradation and release kinetics enable unique opportunities for physisorption and controlled release of therapeutic proteins or vaccines while their chemical and structural integrities are conserved. This paper presents materials, a simple preparation method, and release kinetics of a series of long-term programmable, biocompatible, and biodegradable polymer-based IPN controlled release platforms. Release kinetics of the gp41 protein was controlled over a 30-day period via tuning and altering the chemical structure of the IPN platforms. Post-release analysis confirmed structural conservation of the gp41 protein throughout the process. Cell viability assay confirmed biocompatibility and non-cytotoxicity of the IPNs.
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Affiliation(s)
- Handan Acar
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (H.A.); (R.J.); (N.H.)
| | - Saikat Banerjee
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (S.B.); (H.S.); (M.W.C.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
| | - Heliang Shi
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (S.B.); (H.S.); (M.W.C.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
| | - Reihaneh Jamshidi
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (H.A.); (R.J.); (N.H.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
| | - Nastaran Hashemi
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (H.A.); (R.J.); (N.H.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
- Ames Laboratory, Department of Energy, Ames, IA 50011, USA
| | - Michael W. Cho
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (S.B.); (H.S.); (M.W.C.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
| | - Reza Montazami
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; (H.A.); (R.J.); (N.H.)
- Center of Advanced Host Defenses Immunobiotics and Translational Medicine, Iowa State University, Ames, IA 50011, USA
- Ames Laboratory, Department of Energy, Ames, IA 50011, USA
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160
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Zhang NZ, Xu Y, Wang M, Chen J, Huang SY, Gao Q, Zhu XQ. Vaccination with Toxoplasma gondii calcium-dependent protein kinase 6 and rhoptry protein 18 encapsulated in poly(lactide-co-glycolide) microspheres induces long-term protective immunity in mice. BMC Infect Dis 2016; 16:168. [PMID: 27090890 PMCID: PMC4836102 DOI: 10.1186/s12879-016-1496-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 04/06/2016] [Indexed: 11/10/2022] Open
Abstract
Background Toxoplasmosis is a worldwide zoonosis caused by the intracellular parasite Toxoplasma gondii. However, no effective vaccine is yet available. Poly(lactide-co-glycolide) polymers can reduce protein degradation and sustain the release of antigens over a long period, which could generate a long-lasting immune response in vivo. Using a mouse model of toxoplasmosis, we evaluated the protective efficacy of vaccination with two recombinant proteins, which are formulated in biodegradable polymers. Methods Two recombinant proteins, rCDPK6 and rROP18, were encapsulated in poly(d,l-lactide-co-glycolide) (PLG), and then injected subcutaneously into Kunming mice. The mice immune responses were evaluated in terms of lympho-proliferation, cytokine expression, and antibodies. The survival of infected mice and brain cyst formation were also evaluated at 6 weeks after challenge with T. gondii RH strain (genotype I) or PRU strain (genotype II). Results Both protein vaccines induced Th1-biased immune responses, with increased specific antibodies and T cells, high levels of interferon-γ and interleukin 2, and strong lymphocyte proliferative responses. The mice immunized with the various protein vaccines survived slightly longer time than the control groups (P > 0.05) after injection with T. gondii RH strain. There were fewer brain cysts in the mice in all the immunized groups than that in the control groups, and the brain cysts were significantly reduced in mice immunized with proteins + 206, rCDPK6 + PLG and rCDPK6 + rROP18 + PLG (P < 0.05) compared controls. Further comparison of the immune responses to the proteins adjuvanted with PLG or Montanide™ ISA 206 VG 6 weeks after the last immunization revealed that antigens encapsulated in PLG conferred greater protective immunity against challenge. Conclusions These findings suggest that the two recombinant T. gondii proteins encapsulated in PLG conferred immunity to T. gondii for an extended period, providing the foundation for the further development of a commercial vaccine against toxoplasmosis.
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Affiliation(s)
- Nian-Zhang Zhang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China
| | - Ying Xu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China.,Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, PR China
| | - Meng Wang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China
| | - Jia Chen
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China
| | - Si-Yang Huang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu Province, 225009, PR China
| | - Qi Gao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong Province, 510642, PR China
| | - Xing-Quan Zhu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China. .,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu Province, 225009, PR China.
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161
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Zafar N, Bitar A, Valour JP, Fessi H, Elaissari A. Elaboration of ammonio methacrylate copolymer based spongy cationic particles via double emulsion solvent evaporation process. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 61:85-96. [DOI: 10.1016/j.msec.2015.12.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 11/09/2015] [Accepted: 12/10/2015] [Indexed: 10/22/2022]
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162
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Allahyari M, Mohit E. Peptide/protein vaccine delivery system based on PLGA particles. Hum Vaccin Immunother 2016; 12:806-28. [PMID: 26513024 PMCID: PMC4964737 DOI: 10.1080/21645515.2015.1102804] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 09/15/2015] [Accepted: 09/27/2015] [Indexed: 12/19/2022] Open
Abstract
Due to the excellent safety profile of poly (D,L-lactide-co-glycolide) (PLGA) particles in human, and their biodegradability, many studies have focused on the application of PLGA particles as a controlled-release vaccine delivery system. Antigenic proteins/peptides can be encapsulated into or adsorbed to the surface of PLGA particles. The gradual release of loaded antigens from PLGA particles is necessary for the induction of efficient immunity. Various factors can influence protein release rates from PLGA particles, which can be defined intrinsic features of the polymer, particle characteristics as well as protein and environmental related factors. The use of PLGA particles encapsulating antigens of different diseases such as hepatitis B, tuberculosis, chlamydia, malaria, leishmania, toxoplasma and allergy antigens will be described herein. The co-delivery of antigens and immunostimulants (IS) with PLGA particles can prevent the systemic adverse effects of immunopotentiators and activate both dendritic cells (DCs) and natural killer (NKs) cells, consequently enhancing the therapeutic efficacy of antigen-loaded PLGA particles. We will review co-delivery of different TLR ligands with antigens in various models, highlighting the specific strengths and weaknesses of the system. Strategies to enhance the immunotherapeutic effect of DC-based vaccine using PLGA particles can be designed to target DCs by functionalized PLGA particle encapsulating siRNAs of suppressive gene, and disease specific antigens. Finally, specific examples of cellular targeting where decorating the surface of PLGA particles target orally administrated vaccine to M-cells will be highlighted.
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Affiliation(s)
- Mojgan Allahyari
- Department of Recombinant Protein Production, Research & Production Complex, Pasteur Institute of Iran, Tehran, Iran
| | - Elham Mohit
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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163
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Ansary RH, Rahman MM, Awang MB, Katas H, Hadi H, Mohamed F, Doolaanea AA, Kamaruzzaman YB. Preparation, characterization and in vitro release study of BSA-loaded double-walled glucose-poly(lactide-co-glycolide) microspheres. Arch Pharm Res 2016; 39:1242-56. [PMID: 26818028 DOI: 10.1007/s12272-016-0710-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 01/18/2016] [Indexed: 11/24/2022]
Abstract
The aim of this study was to prepare a model protein, bovine serum albumin (BSA) loaded double-walled microspheres using a fast degrading glucose core, hydroxyl-terminated poly(lactide-co-glycolide) (Glu-PLGA) and a moderate-degrading carboxyl-terminated PLGA polymers to reduce the initial burst release and to eliminate the lag phase from the release profile of PLGA microspheres. The double-walled microspheres were prepared using a modified water-in-oil-in-oil-in-water (w/o/o/w) method and single-polymer microspheres were prepared using a conventional water-in-oil-in-water (w/o/w) emulsion solvent evaporation method. The particle size, morphology, encapsulation efficiency, thermal properties, in vitro drug release and structural integrity of BSA were evaluated in this study. Double-walled microspheres prepared with Glu-PLGA and PLGA polymers with a mass ratio of 1:1 were non-porous, smooth-surfaced, and spherical in shape. A significant reduction of initial burst release was achieved for the double-walled microspheres compared to single-polymer microspheres. In addition, microspheres prepared using Glu-PLGA and PLGA polymers in a mass ratio of 1:1 exhibited continuous BSA release after the small initial burst without any lag phase. It can be concluded that the double-walled microspheres made of Glu-PLGA and PLGA polymers in a mass ratio of 1:1 can be a potential delivery system for pharmaceutical proteins.
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Affiliation(s)
- Rezaul H Ansary
- Kulliyyah of Pharmacy, International Islamic University Malaysia (IIUM), 25200, Kuantan, Malaysia
| | - Mokhlesur M Rahman
- Kulliyyah of Pharmacy, International Islamic University Malaysia (IIUM), 25200, Kuantan, Malaysia.
| | - Mohamed B Awang
- Faculty of Pharmacy, Cyberjaya University College of Medical Sciences, 63000, Cyberjaya, Malaysia
| | - Haliza Katas
- Drug Delivery and Novel Targeting Research Group, Centre for Drug Delivery Research, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia
| | - Hazrina Hadi
- Kulliyyah of Pharmacy, International Islamic University Malaysia (IIUM), 25200, Kuantan, Malaysia
| | - Farahidah Mohamed
- Kulliyyah of Pharmacy, International Islamic University Malaysia (IIUM), 25200, Kuantan, Malaysia
| | - Abd Almonem Doolaanea
- Kulliyyah of Pharmacy, International Islamic University Malaysia (IIUM), 25200, Kuantan, Malaysia
| | - Yunus B Kamaruzzaman
- Kulliyyah of Science, International Islamic University Malaysia, 25200, Kuantan, Malaysia
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164
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Rahmani S, Ross AM, Park TH, Durmaz H, Dishman AF, Prieskorn DM, Jones N, Altschuler RA, Lahann J. Dual Release Carriers for Cochlear Delivery. Adv Healthc Mater 2016; 5:94-100. [PMID: 26178272 PMCID: PMC5550902 DOI: 10.1002/adhm.201500141] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 05/03/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Sahar Rahmani
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
- Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), 76344, Eggenstein-Leopoldshafen, Germany
| | - Astin M Ross
- Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Kresge Hearing Research Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Tae-Hong Park
- Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Hakan Durmaz
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
- Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Acacia F Dishman
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
- Biophysics, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Diane M Prieskorn
- Kresge Hearing Research Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Nathan Jones
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Richard A Altschuler
- Kresge Hearing Research Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Joerg Lahann
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
- Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), 76344, Eggenstein-Leopoldshafen, Germany
- Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
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165
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Wang Y, Sun T, Zhang Y, Chaurasiya B, Huang L, Liu X, Tu J, Xiong Y, Sun C. Exenatide loaded PLGA microspheres for long-acting antidiabetic therapy: preparation, characterization, pharmacokinetics and pharmacodynamics. RSC Adv 2016. [DOI: 10.1039/c6ra02994a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We herein fabricated the exenatide-loaded microspheres by a water in oil in oil (W/O/O) method, which presented great effect on glycemic control with low initial burst release and reduced risk of gastrointestinal intolerance and hypoglycemia.
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Affiliation(s)
- Yutong Wang
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Ting Sun
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Yue Zhang
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Birendra Chaurasiya
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Liping Huang
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Xi Liu
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Jiasheng Tu
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Yerong Xiong
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Chunmeng Sun
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
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166
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Shen J, Lee K, Choi S, Qu W, Wang Y, Burgess DJ. A reproducible accelerated in vitro release testing method for PLGA microspheres. Int J Pharm 2015; 498:274-82. [PMID: 26705156 DOI: 10.1016/j.ijpharm.2015.12.031] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/10/2015] [Accepted: 12/12/2015] [Indexed: 12/29/2022]
Abstract
The objective of the present study was to develop a discriminatory and reproducible accelerated in vitro release method for long-acting PLGA microspheres with inner structure/porosity differences. Risperidone was chosen as a model drug. Qualitatively and quantitatively equivalent PLGA microspheres with different inner structure/porosity were obtained using different manufacturing processes. Physicochemical properties as well as degradation profiles of the prepared microspheres were investigated. Furthermore, in vitro release testing of the prepared risperidone microspheres was performed using the most common in vitro release methods (i.e., sample-and-separate and flow through) for this type of product. The obtained compositionally equivalent risperidone microspheres had similar drug loading but different inner structure/porosity. When microsphere particle size appeared similar, porous risperidone microspheres showed faster microsphere degradation and drug release compared with less porous microspheres. Both in vitro release methods investigated were able to differentiate risperidone microsphere formulations with differences in porosity under real-time (37 °C) and accelerated (45 °C) testing conditions. Notably, only the accelerated USP apparatus 4 method showed good reproducibility for highly porous risperidone microspheres. These results indicated that the accelerated USP apparatus 4 method is an appropriate fast quality control tool for long-acting PLGA microspheres (even with porous structures).
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Affiliation(s)
- Jie Shen
- School of Pharmacy, University of Connecticut, Storrs, CT 06269, USA
| | - Kyulim Lee
- School of Pharmacy, University of Connecticut, Storrs, CT 06269, USA
| | - Stephanie Choi
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, FDA, Silver Spring, MD 20993, USA
| | - Wen Qu
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, FDA, Silver Spring, MD 20993, USA
| | - Yan Wang
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, FDA, Silver Spring, MD 20993, USA
| | - Diane J Burgess
- School of Pharmacy, University of Connecticut, Storrs, CT 06269, USA.
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167
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Caolo V, Vries M, Zupancich J, Houben M, Mihov G, Wagenaar A, Swennen G, Nossent Y, Quax P, Suylen D, Dijkgraaf I, Molin D, Hackeng T, Post M. CXCL1 microspheres: a novel tool to stimulate arteriogenesis. Drug Deliv 2015; 23:2919-2926. [PMID: 26651867 DOI: 10.3109/10717544.2015.1120366] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
CONTEXT After arterial occlusion, diametrical growth of pre-existing natural bypasses around the obstruction, i.e. arteriogenesis, is the body's main coping mechanism. We have shown before that continuous infusion of chemokine (C-X-C motif) ligand 1 (CXCL1) promotes arteriogenesis in a rodent hind limb ischemia model. OBJECTIVE For clinical translation of these positive results, we developed a new administration strategy of local and sustained delivery. Here, we investigate the therapeutic potential of CXCL1 in a drug delivery system based on microspheres. MATERIALS AND METHODS We generated poly(ester amide) (PEA) microspheres loaded with CXCL1 and evaluated them in vitro for cellular toxicity and chemokine release characteristics. In vivo, murine femoral arteries were ligated and CXCL1 was administered either intra-arterially via osmopump or intramuscularly encapsulated in biodegradable microspheres. Perfusion recovery was measured with Laser-Doppler. RESULTS The developed microspheres were not cytotoxic and displayed a sustained chemokine release up to 28 d in vitro. The amount of released CXCL1 was 100-fold higher than levels in native ligated hind limb. Also, the CXCL1-loaded microspheres significantly enhanced perfusion recovery at day 7 after ligation compared with both saline and non-loaded conditions (55.4 ± 5.0% CXCL1-loaded microspheres versus 43.1 ± 4.5% non-loaded microspheres; n = 8-9; p < 0.05). On day 21 after ligation, the CXCL1-loaded microspheres performed even better than continuous CXCL1 administration (102.1 ± 4.4% CXCL1-loaded microspheres versus 85.7 ± 4.8% CXCL1 osmopump; n = 9; p < 0.05). CONCLUSION Our results demonstrate a proof of concept that sustained, local delivery of CXCL1 encapsulated in PEA microspheres provides a new tool to stimulate arteriogenesis in vivo.
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Affiliation(s)
- Vincenza Caolo
- a Department of Physiology , CARIM, Maastricht University , The Netherlands
| | - Mark Vries
- a Department of Physiology , CARIM, Maastricht University , The Netherlands
| | | | | | | | - Allard Wagenaar
- a Department of Physiology , CARIM, Maastricht University , The Netherlands
| | - Geertje Swennen
- a Department of Physiology , CARIM, Maastricht University , The Netherlands
| | - Yaël Nossent
- d Department of Surgery , Leiden University Medical Center , The Netherlands , and
| | - Paul Quax
- d Department of Surgery , Leiden University Medical Center , The Netherlands , and
| | - Dennis Suylen
- e Department of Biochemistry , CARIM, Maastricht University , The Netherlands
| | - Ingrid Dijkgraaf
- e Department of Biochemistry , CARIM, Maastricht University , The Netherlands
| | - Daniel Molin
- a Department of Physiology , CARIM, Maastricht University , The Netherlands
| | - Tilman Hackeng
- e Department of Biochemistry , CARIM, Maastricht University , The Netherlands
| | - Mark Post
- a Department of Physiology , CARIM, Maastricht University , The Netherlands
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168
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Double emulsion solvent evaporation techniques used for drug encapsulation. Int J Pharm 2015; 496:173-90. [DOI: 10.1016/j.ijpharm.2015.10.057] [Citation(s) in RCA: 256] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/21/2015] [Accepted: 10/22/2015] [Indexed: 12/11/2022]
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169
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van Dijk BGM, Potier E, van Dijk M, Creemers LB, Ito K. Osteogenic protein 1 does not stimulate a regenerative effect in cultured human degenerated nucleus pulposus tissue. J Tissue Eng Regen Med 2015; 11:2127-2135. [PMID: 26612824 DOI: 10.1002/term.2111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 10/02/2015] [Accepted: 10/15/2015] [Indexed: 01/07/2023]
Abstract
Low back pain is a major cause of disability and is heavily associated with intervertebral disc degeneration. Osteogenic protein 1 (OP-1) is a growth factor that has shown potential to regenerate the intervertebral disc in human cells and animal models. However, high doses are required, presumably due to clearance from the tissue; controlled release may be a solution to this problem. In this study, we developed a preclinical, pathophysiological human tissue explant culture model of degenerated nucleus pulposus (NP). The NP explants were cultured for 28 days and injected with 100 µg OP-1 as a bolus, or with sustained-release biodegradable microspheres loaded with 16 or 1.6 µg OP-1. After culture, the tissue explants were analysed for biochemical content [water, sulphated glycosaminoglycans (GAGs), hydroxyproline and DNA], histology, cell viability and gene expression (disc matrix anabolic and catabolic markers). Untreated degenerated NP explants lost some of their GAG content when cultured for 4 weeks, but maintained other tissue constituents. Gene expression levels were close to native values. A bolus injection of OP-1 partially restored GAG content to the native level in half of the donors, while the sustained release of OP-1 did not affect the NP explants. No effect of treatment was observed on anabolic or catabolic gene expression at day 28. These results demonstrated that the regenerative potential of OP-1 is donor dependent, and only at very high doses. This questions the clinical use of OP-1 as a regenerative agent, as these high doses may increase the incidence of complications. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Bart G M van Dijk
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, The Netherlands
| | - Esther Potier
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, The Netherlands.,Laboratoire de Bioingénierie et Biomécanique Ostéo-articulaire, UMR CNRS 7052, Université Denis-Diderot, Faculté de Médecine Lariboisière-Saint-Louis, Paris, France
| | | | - Laura B Creemers
- Department of Orthopaedics, University Medical Centre Utrecht, The Netherlands
| | - Keita Ito
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, The Netherlands.,Department of Orthopaedics, University Medical Centre Utrecht, The Netherlands
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170
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Electrospraying technique for the fabrication of metronidazole contained PLGA particles and their release profile. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 56:66-73. [DOI: 10.1016/j.msec.2015.06.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 05/22/2015] [Accepted: 06/09/2015] [Indexed: 12/20/2022]
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171
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Novel biodegradable polymers for local growth factor delivery. Eur J Pharm Biopharm 2015; 97:318-28. [DOI: 10.1016/j.ejpb.2015.06.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 06/06/2015] [Accepted: 06/09/2015] [Indexed: 01/09/2023]
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172
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Xu W, He J, Wu G, Xiong F, Du H, Wang G. Stabilization and immune response of HBsAg encapsulated within poly(lactic-co-glycolic acid) microspheres using HSA as a stabilizer. Int J Pharm 2015; 496:332-41. [PMID: 26453785 DOI: 10.1016/j.ijpharm.2015.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 09/19/2015] [Accepted: 10/03/2015] [Indexed: 11/18/2022]
Abstract
The aim of this study was to prepare poly(lactic-co-glycolic acid) (PLGA) microspheres containing hepatitis B virus surface antigen (HBsAg) using human serum albumin (HSA) as a stabilizer. Lyophilization and emulsification of HBsAg solution with dichloromethane caused a considerable loss of HBsAg antigenicity. Thus, the effects of HSA and trehalose on HBsAg recovery during lyophilization and emulsification were investigated. Adding HSA to HBsAg solutions significantly improved antigen recovery to >90% during lyophilization and emulsification. The effects of co-encapsulated HSA on the characteristics of the PLGA microspheres and stability of HBsAg released from the microspheres were also investigated. The in vitro release test showed that HBsAg was released from the PLGA microspheres continuously over seventy days. A large amount of released HBsAg was inactive without co-encapsulation of HSA. On the contrary, with HSA co-encapsulation, the released HBsAg retained approximately 90% of its antigenicity. The single injection of the HBsAg-HSA-loaded PLGA microspheres in rats resulted in higher anti-HBsAg IgG and Th1 cytokine levels than the single injection of the HBsAg-loaded microspheres or two injections of the conventional aluminum-adjuvanted HBsAg vaccine. Based on these findings, the HBsAg-HSA-loaded PLGA microspheres could be an effective carrier for HBsAg and form a promising depot system.
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Affiliation(s)
- Wenjuan Xu
- College of Life Science, Hebei Normal University, NO. 20 Road East of 2nd Ring South, Shijiazhuang, Hebei 050024, People's Republic of China
| | - Jintian He
- College of Life Science, Hebei Normal University, NO. 20 Road East of 2nd Ring South, Shijiazhuang, Hebei 050024, People's Republic of China.
| | - Guanghao Wu
- College of Life Science, Hebei Normal University, NO. 20 Road East of 2nd Ring South, Shijiazhuang, Hebei 050024, People's Republic of China
| | - Fangfang Xiong
- College of Life Science, Hebei Normal University, NO. 20 Road East of 2nd Ring South, Shijiazhuang, Hebei 050024, People's Republic of China
| | - Huijuan Du
- College of Life Science, Hebei Normal University, NO. 20 Road East of 2nd Ring South, Shijiazhuang, Hebei 050024, People's Republic of China
| | - Gaizhen Wang
- College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, People's Republic of China.
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173
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Tajdaran K, Gordon T, Wood MD, Shoichet MS, Borschel GH. An engineered biocompatible drug delivery system enhances nerve regeneration after delayed repair. J Biomed Mater Res A 2015; 104:367-76. [DOI: 10.1002/jbm.a.35572] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 08/21/2015] [Accepted: 09/21/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Kasra Tajdaran
- Division of Plastic and Reconstructive Surgery; the Hospital for Sick Children; 555 University Ave Toronto Ontario M5G1X8 Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto; Toronto Ontario Canada
| | - Tessa Gordon
- Division of Plastic and Reconstructive Surgery; the Hospital for Sick Children; 555 University Ave Toronto Ontario M5G1X8 Canada
- Division of Plastic and Reconstructive Surgery, Department of Surgery; University of Toronto; Toronto Ontario Canada
- Program in Neuroscience, the Hospital for Sick Children Research Institute; Toronto Ontario Canada
| | - Mathew D. Wood
- Division of Plastic and Reconstructive Surgery; Washington University School of Medicine; St. Louis Missouri
| | - Molly S. Shoichet
- Institute of Biomaterials and Biomedical Engineering, University of Toronto; Toronto Ontario Canada
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; Toronto Ontario Canada
| | - Gregory H. Borschel
- Division of Plastic and Reconstructive Surgery; the Hospital for Sick Children; 555 University Ave Toronto Ontario M5G1X8 Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto; Toronto Ontario Canada
- Division of Plastic and Reconstructive Surgery, Department of Surgery; University of Toronto; Toronto Ontario Canada
- Program in Neuroscience, the Hospital for Sick Children Research Institute; Toronto Ontario Canada
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174
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Yu M, Wu J, Shi J, Farokhzad OC. Nanotechnology for protein delivery: Overview and perspectives. J Control Release 2015; 240:24-37. [PMID: 26458789 DOI: 10.1016/j.jconrel.2015.10.012] [Citation(s) in RCA: 243] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 10/06/2015] [Accepted: 10/07/2015] [Indexed: 12/18/2022]
Abstract
Protein-based therapeutics have made a significant impact in the treatment of a variety of important human diseases. However, given their intrinsically vulnerable structure and susceptibility to enzymatic degradation, many therapeutic proteins such as enzymes, growth factors, hormones, and cytokines suffer from poor physicochemical/biological stability and immunogenicity that may limit their potential benefits, and in some cases limit their utility. Furthermore, when protein therapeutics are developed for intracellular targets, their internalization and biological activity may be limited by inefficient membrane permeability and/or endosomal escape. Development of effective protein delivery strategies is therefore essential to further enhance therapeutic outcomes to enable widespread medical applications. This review discusses the advantages and limitations of marketed and developmental-stage protein delivery strategies, and provides a focused overview of recent advances in nanotechnology platforms for the systemic delivery of therapeutic proteins. In addition, we also highlight nanoparticle-mediated non-invasive administration approaches (e.g., oral, nasal, pulmonary, and transdermal routes) for protein delivery.
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Affiliation(s)
- Mikyung Yu
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Jun Wu
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Jinjun Shi
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States.
| | - Omid C Farokhzad
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States; King Abdulaziz University, Jeddah, Saudi Arabia.
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175
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Chang DP, Garripelli VK, Rea J, Kelley R, Rajagopal K. Investigation of Fragment Antibody Stability and Its Release Mechanism from Poly(Lactide-co-Glycolide)-Triacetin Depots for Sustained-Release Applications. J Pharm Sci 2015; 104:3404-17. [DOI: 10.1002/jps.24546] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/14/2015] [Accepted: 05/18/2015] [Indexed: 12/11/2022]
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176
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Swed A, Cordonnier T, Dénarnaud A, Boyer C, Guicheux J, Weiss P, Boury F. Sustained release of TGF-β1 from biodegradable microparticles prepared by a new green process in CO2 medium. Int J Pharm 2015. [DOI: 10.1016/j.ijpharm.2015.07.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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177
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Ford Versypt AN, Arendt PD, Pack DW, Braatz RD. Derivation of an Analytical Solution to a Reaction-Diffusion Model for Autocatalytic Degradation and Erosion in Polymer Microspheres. PLoS One 2015; 10:e0135506. [PMID: 26284787 PMCID: PMC4540565 DOI: 10.1371/journal.pone.0135506] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 07/22/2015] [Indexed: 11/19/2022] Open
Abstract
A mathematical reaction-diffusion model is defined to describe the gradual decomposition of polymer microspheres composed of poly(D,L-lactic-co-glycolic acid) (PLGA) that are used for pharmaceutical drug delivery over extended periods of time. The partial differential equation (PDE) model treats simultaneous first-order generation due to chemical reaction and diffusion of reaction products in spherical geometry to capture the microsphere-size-dependent effects of autocatalysis on PLGA erosion that occurs when the microspheres are exposed to aqueous media such as biological fluids. The model is solved analytically for the concentration of the autocatalytic carboxylic acid end groups of the polymer chains that comprise the microspheres as a function of radial position and time. The analytical solution for the reaction and transport of the autocatalytic chemical species is useful for predicting the conditions under which drug release from PLGA microspheres transitions from diffusion-controlled to erosion-controlled release, for understanding the dynamic coupling between the PLGA degradation and erosion mechanisms, and for designing drug release particles. The model is the first to provide an analytical prediction for the dynamics and spatial heterogeneities of PLGA degradation and erosion within a spherical particle. The analytical solution is applicable to other spherical systems with simultaneous diffusive transport and first-order generation by reaction.
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Affiliation(s)
- Ashlee N. Ford Versypt
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Paul D. Arendt
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Daniel W. Pack
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky, United States of America
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky, United States of America
| | - Richard D. Braatz
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- * E-mail:
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178
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Preformulation Studies of Bee Venom for the Preparation of Bee Venom-Loaded PLGA Particles. Molecules 2015; 20:15072-83. [PMID: 26295219 PMCID: PMC6332154 DOI: 10.3390/molecules200815072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 08/04/2015] [Accepted: 08/05/2015] [Indexed: 11/16/2022] Open
Abstract
It is known that allergic people was potentially vulnerable to bee venom (BV), which can induce an anaphylactic shock, eventually leading to death. Up until recently, this kind of allergy was treated only by venom immunotherapy (VIT) and its efficacy has been recognized worldwide. This treatment is practiced by subcutaneous injections that gradually increase the doses of the allergen. This is inconvenient for patients due to frequent injections. Poly (D,L-lactide-co-glycolide) (PLGA) has been broadly studied as a carrier for drug delivery systems (DDS) of proteins and peptides. PLGA particles usually induce a sustained release. In this study, the physicochemical properties of BV were examined prior to the preparation of BV-loaded PLGA nanoparticles NPs). The content of melittin, the main component of BV, was 53.3%. When protected from the light BV was stable at 4 °C in distilled water, during 8 weeks. BV-loaded PLGA particles were prepared using dichloromethane as the most suitable organic solvent and two min of ultrasonic emulsification time. This study has characterized the physicochemical properties of BV for the preparation BV-loaded PLGA NPs in order to design and optimize a suitable sustained release system in the future.
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179
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Kanjanakawinkul W, Medlicott NJ, Rades T, Puttipipatkhachorn S, Pongjanyakul T. Lysozyme-magnesium aluminum silicate microparticles: Molecular interaction, bioactivity and release studies. Int J Biol Macromol 2015; 80:651-8. [PMID: 26193680 DOI: 10.1016/j.ijbiomac.2015.07.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 07/07/2015] [Accepted: 07/10/2015] [Indexed: 11/28/2022]
Abstract
The objectives of this study were to investigate the adsorption behavior of lysozyme (LSZ) onto magnesium aluminum silicate (MAS) at various pHs and to characterize the LSZ-MAS microparticles obtained from the molecular interaction between LSZ and MAS. The results showed that LSZ could be bound onto the MAS layers at different pHs, leading to the formation of LSZ-MAS microparticles. The higher preparation pH permitted greater adsorption affinity but a lower adsorption capacity of LSZ onto MAS. LSZ could interact with MAS via hydrogen bonds and electrostatic forces, resulting in the formation of intercalated nanocomposites. The particle size, %LSZ adsorbed, and LSZ release rate of LSZ-MAS microparticles increased when the LSZ-MAS ratio was increased. The secondary structure of LSZ bound onto the MAS layers in microparticles prepared at various pHs was altered compared with that of native LSZ. Moreover, the LSZ extracted from microparticles prepared at pH 4 showed an obvious change in the tertiary structure, leading to a decrease in the biological activity of the LSZ released. These findings suggested that LSZ can strongly interact with MAS to form microparticles that may potentially be used as delivery systems for sustained protein release.
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Affiliation(s)
| | | | - Thomas Rades
- School of Pharmacy, University of Otago, Dunedin 9054, New Zealand; Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Satit Puttipipatkhachorn
- Department of Manufacturing Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
| | - Thaned Pongjanyakul
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand.
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180
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Epsilon-caprolactone modified polyethylenimine for highly efficient antigen delivery and chemical exchange saturation transfer functional MR imaging. Biomaterials 2015; 56:219-28. [DOI: 10.1016/j.biomaterials.2015.03.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/25/2015] [Accepted: 03/27/2015] [Indexed: 11/21/2022]
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181
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Hamid Akash MS, Rehman K, Chen S. Natural and Synthetic Polymers as Drug Carriers for Delivery of Therapeutic Proteins. POLYM REV 2015. [DOI: 10.1080/15583724.2014.995806] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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182
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Zhai P, Chen XB, Schreyer DJ. PLGA/alginate composite microspheres for hydrophilic protein delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 56:251-9. [PMID: 26249587 DOI: 10.1016/j.msec.2015.06.015] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/11/2015] [Accepted: 06/09/2015] [Indexed: 11/16/2022]
Abstract
Poly(lactic-co-glycolic acid) (PLGA) microspheres and PLGA/alginate composite microspheres were prepared by a novel double emulsion and solvent evaporation technique and loaded with bovine serum albumin (BSA) or rabbit anti-laminin antibody protein. The addition of alginate and the use of a surfactant during microsphere preparation increased the encapsulation efficiency and reduced the initial burst release of hydrophilic BSA. Confocal laser scanning microcopy (CLSM) of BSA-loaded PLGA/alginate composite microspheres showed that PLGA, alginate, and BSA were distributed throughout the depths of microspheres; no core/shell structure was observed. Scanning electron microscopy revealed that PLGA microspheres erode and degrade more quickly than PLGA/alginate composite microspheres. When loaded with anti-laminin antibody, the function of released antibody was well preserved in both PLGA and PLGA/alginate composite microspheres. The biocompatibility of PLGA and PLGA/alginate microspheres were examined using four types of cultured cell lines, representing different tissue types. Cell survival was variably affected by the inclusion of alginate in composite microspheres, possibly due to the sensitivity of different cell types to excess calcium that may be released from the calcium cross-linked alginate.
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Affiliation(s)
- Peng Zhai
- Department of Anatomy and Cell Biology, University of Saskatchewan, S7N5E5, Canada; Division of Biomedical Engineering, University of Saskatchewan, S7N5A9, Canada
| | - X B Chen
- Department of Mechanical Engineering, University of Saskatchewan, S7N5A9, Canada; Division of Biomedical Engineering, University of Saskatchewan, S7N5A9, Canada
| | - David J Schreyer
- Department of Anatomy and Cell Biology, University of Saskatchewan, S7N5E5, Canada; Division of Biomedical Engineering, University of Saskatchewan, S7N5A9, Canada.
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Nair MS, Lee MM, Bonnegarde-Bernard A, Wallace JA, Dean DH, Ostrowski MC, Burry RW, Boyaka PN, Chan MK. Cry protein crystals: a novel platform for protein delivery. PLoS One 2015; 10:e0127669. [PMID: 26030844 PMCID: PMC4451076 DOI: 10.1371/journal.pone.0127669] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 04/17/2015] [Indexed: 12/04/2022] Open
Abstract
Protein delivery platforms are important tools in the development of novel protein therapeutics and biotechnologies. We have developed a new class of protein delivery agent based on sub-micrometer-sized Cry3Aa protein crystals that naturally form within the bacterium Bacillus thuringiensis. We demonstrate that fusion of the cry3Aa gene to that of various reporter proteins allows for the facile production of Cry3Aa fusion protein crystals for use in subsequent applications. These Cry3Aa fusion protein crystals are efficiently taken up and retained by macrophages and other cell lines in vitro, and can be delivered to mice in vivo via multiple modes of administration. Oral delivery of Cry3Aa fusion protein crystals to C57BL/6 mice leads to their uptake by MHC class II cells, including macrophages in the Peyer’s patches, supporting the notion that the Cry3Aa framework can be used to stabilize cargo protein against degradation for delivery to gastrointestinal lymphoid tissues.
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Affiliation(s)
- Manoj S. Nair
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States of America
| | - Marianne M. Lee
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States of America
| | - Astrid Bonnegarde-Bernard
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States of America
| | - Julie A. Wallace
- Department of Molecular and Cellular Biology, The Ohio State University, Columbus, OH, United States of America
- Tumor Microenvironment Program, The Comprehensive Cancer Center, The Ohio State University, Columbus, OH, United States of America
| | - Donald H. Dean
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States of America
| | - Michael C. Ostrowski
- Department of Molecular and Cellular Biology, The Ohio State University, Columbus, OH, United States of America
- Tumor Microenvironment Program, The Comprehensive Cancer Center, The Ohio State University, Columbus, OH, United States of America
| | - Richard W. Burry
- Department of Neuroscience, The Ohio State University, Columbus, OH, United States of America
| | - Prosper N. Boyaka
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States of America
| | - Michael K. Chan
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States of America
- * E-mail:
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184
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Rahimian S, Fransen MF, Kleinovink JW, Amidi M, Ossendorp F, Hennink WE. Polymeric microparticles for sustained and local delivery of antiCD40 and antiCTLA-4 in immunotherapy of cancer. Biomaterials 2015; 61:33-40. [PMID: 25993015 DOI: 10.1016/j.biomaterials.2015.04.043] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 04/30/2015] [Indexed: 01/24/2023]
Abstract
This study investigated the feasibility of the use of polymeric microparticles for sustained and local delivery of immunomodulatory antibodies in immunotherapy of cancer. Local delivery of potent immunomodulatory antibodies avoids unwanted systemic side effects while retaining their anti-tumor effects. Microparticles based on poly(lactic-co-hydroxymethyl-glycolic acid) (pLHMGA) and loaded with two distinct types of immunomodulatory antibodies (CTLA-4 antibody blocking inhibitory receptors on T cells or CD40 agonistic antibody stimulating dendritic cells) were prepared by double emulsion solvent evaporation technique. The obtained particles had a diameter of 12-15 μm to avoid engulfment by phagocytes and were slightly porous as shown by SEM analysis. The loading efficiency of the antibodies in the microparticles was >85%. The in vitro release profile of antiCD40 and antiCTLA-4 from microparticles showed a burst release of about 20% followed by a sustained release of the content up to 80% of the loading in around 30 days. The therapeutic efficacy of the microparticulate formulations was studied in colon carcinoma tumor model (MC-38). Mice bearing subcutaneous MC-38 tumors were treated with the same dose of immunomodulatory antibodies formulated either in incomplete Freund's adjuvant (IFA) or in microparticles. The antibody-loaded microparticles showed comparable therapeutic efficacy to the IFA formulation with no local adverse effects. The biodegradable microparticles were fully resorbed in vivo and no remnants of inflammatory depots as observed with IFA were present in the cured mice. Moreover the microparticles exhibited lower antibody serum levels in comparison with IFA formulations which lowers the probability of systemic adverse effects. In conclusion, pLHMGA microparticles are excellent delivery systems in providing long-lasting and non-toxic antibody therapy for immunotherapy of cancer.
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Affiliation(s)
- Sima Rahimian
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Marieke F Fransen
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands
| | - Jan Willem Kleinovink
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands
| | - Maryam Amidi
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Ferry Ossendorp
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
| | - Wim E Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
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185
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Addition of Zinc Improves the Physical Stability of Insulin in the Primary Emulsification Step of the Poly(lactide-co-glycolide) Microsphere Preparation Process. Polymers (Basel) 2015. [DOI: 10.3390/polym7050836] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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186
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Shirangi M, Hennink WE, Somsen GW, van Nostrum CF. Identification and Assessment of Octreotide Acylation in Polyester Microspheres by LC-MS/MS. Pharm Res 2015; 32:3044-54. [PMID: 25832500 PMCID: PMC4526596 DOI: 10.1007/s11095-015-1685-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 03/20/2015] [Indexed: 01/29/2023]
Abstract
Purpose Polyesters with hydrophilic domains, i.e., poly(d,l-lactic-co-glycolic-co-hydroxymethyl glycolic acid) (PLGHMGA) and a multiblock copolymer of poly(ε-caprolactone)-PEG-poly(ε-caprolactone) and poly(l-lactide) ((PC-PEG-PC)-(PL)) are expected to cause less acylation of encapsulated peptides than fully hydrophobic matrices. Our purpose is to assess the extent and sites of acylation of octreotide loaded in microspheres using tandem mass spectrometry analysis. Methods Octreotide loaded microspheres were prepared by a double emulsion solvent evaporation technique. Release profiles of octreotide from hydrophilic microspheres were compared with that of PLGA microspheres. To scrutinize the structural information and localize the actual modification site(s) of octreotide, liquid chromatography ion-trap mass spectrometry (LC-ITMS) was performed on the acylated adducts. Results Hydrophilic microspheres showed less acylated adducts in comparison with PLGA microspheres. LC-MS/MS showed that besides the N-terminus and primary amine of lysine, the primary hydroxyl of the end group of octreotide was also subjected to acylation. Nucleophilic attack of the peptide can also occur to the carbamate bond presented in (PC-PEG-PC)-(PL) since 1,4-butanediisocyanate was used as the chain extender. Conclusions Hydrophilic polyesters are promising systems for controlled release of peptide because substantially less acylation occurs in microspheres based on these polymers. LC-ITMS provided detailed structural information of octreotide modifications via mass analysis of ion fragments. Electronic supplementary material The online version of this article (doi:10.1007/s11095-015-1685-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mehrnoosh Shirangi
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
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187
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Gaj T, Liu J. Direct protein delivery to mammalian cells using cell-permeable Cys2-His2 zinc-finger domains. J Vis Exp 2015:52814. [PMID: 25866937 PMCID: PMC4401377 DOI: 10.3791/52814] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Due to their modularity and ability to be reprogrammed to recognize a wide range of DNA sequences, Cys2-His2 zinc-finger DNA-binding domains have emerged as useful tools for targeted genome engineering. Like many other DNA-binding proteins, zinc-fingers also possess the innate ability to cross cell membranes. We recently demonstrated that this intrinsic cell-permeability could be leveraged for intracellular protein delivery. Genetic fusion of zinc-finger motifs leads to efficient transport of protein and enzyme cargo into a broad range of mammalian cell types. Unlike other protein transduction technologies, delivery via zinc-finger domains does not inhibit enzyme activity and leads to high levels of cytosolic delivery. Here a detailed step-by-step protocol is presented for the implementation of zinc-finger technology for protein delivery into mammalian cells. Key steps for achieving high levels of intracellular zinc-finger-mediated delivery are highlighted and strategies for maximizing the performance of this system are discussed.
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Affiliation(s)
- Thomas Gaj
- Departments of Chemistry and Cell and Molecular Biology, The Scripps Research Institute;
| | - Jia Liu
- Departments of Chemistry and Cell and Molecular Biology, The Scripps Research Institute; Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University
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188
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189
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Prajapati VD, Jani GK, Kapadia JR. Current knowledge on biodegradable microspheres in drug delivery. Expert Opin Drug Deliv 2015; 12:1283-99. [DOI: 10.1517/17425247.2015.1015985] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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190
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Walters AA, Krastev C, Hill AVS, Milicic A. Next generation vaccines: single-dose encapsulated vaccines for improved global immunisation coverage and efficacy. ACTA ACUST UNITED AC 2015; 67:400-8. [PMID: 25644530 DOI: 10.1111/jphp.12367] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Accepted: 11/09/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Vaccination is considered the most successful health intervention; yet incomplete immunisation coverage continues to risk outbreaks of vaccine preventable diseases worldwide. Vaccination coverage improvement through a single-dose prime-boost technology would revolutionise modern vaccinology, impacting on disease prevalence, significantly benefiting health care and lowering economic burden of disease. KEY FINDINGS Over the past 30 years, there have been efforts to develop a single-dose delayed release vaccine technology that could replace the repeated prime-boost immunisations required for many current vaccines. Biocompatible polymers have been employed to encapsulate model vaccines for delayed delivery in vivo, using either continuous or pulsed release. Biomaterial considerations, safety aspects, particle characteristics and immunological aspects of this approach are discussed in detail. SUMMARY Despite many studies showing the feasibility of vaccine encapsulation for single-dose prime-boost administration, none have been translated into convincing utility in animal models or human trials. Further development of the encapsulation technology, through optimising the particle composition, formulation, antigen loading efficacy and stability, could lead to the application of this important approach in vaccine deployment. If successful, this would provide a solution to better global vaccination coverage through a reduction in the number of immunisations needed to achieve protection against infectious diseases. This review provides an overview of single-dose vaccination in the context of today's vaccine needs and is derived from a body of literature that has not been reviewed for over a decade.
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Affiliation(s)
- Adam A Walters
- ORCRB, The Jenner Institute, University of Oxford, Oxford, UK
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191
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Akash MSH, Rehman K, Chen S. Polymeric-based particulate systems for delivery of therapeutic proteins. Pharm Dev Technol 2015; 21:367-78. [DOI: 10.3109/10837450.2014.999785] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Muhammad Sajid Hamid Akash
- Institute of Pharmacology, Toxicology, and Biochemical Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China,
- Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan, and
| | - Kanwal Rehman
- Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan, and
- Department of Toxicology, School of Medicine and Public Health, Zhejiang University, Hangzhou, China
| | - Shuqing Chen
- Institute of Pharmacology, Toxicology, and Biochemical Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China,
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192
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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] [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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193
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Shunmugaperumal T, Kaur V, Thenrajan RS. Lipid- and Polymer-Based Drug Delivery Carriers for Eradicating Microbial Biofilms Causing Medical Device-Related Infections. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 831:147-89. [DOI: 10.1007/978-3-319-09782-4_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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194
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Kumari V, Chatterjee N, Das S, Bhunia S, Saha KD, Bhaumik A. Self-assembled ZnS nanospheres with nanoscale porosity as an efficient carrier for the delivery of doxorubicin. RSC Adv 2015. [DOI: 10.1039/c5ra17998j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Self-aggregated mesoporous ZnS nanomaterials have been utilized as a drug-delivery vehicle that can activates the apoptotic pathway with a minimal concentration of doxorubicin and it can regulates lymphocytic leukemia cell growth.
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Affiliation(s)
- Vandana Kumari
- Department of Material Science
- Institution Association for the Cultivation of Science
- Kolkata-700032
- India
| | - Nabanita Chatterjee
- Cancer Biology and Inflammatory Disorder Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Subhadip Das
- Cancer Biology and Inflammatory Disorder Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Subhajit Bhunia
- Department of Material Science
- Institution Association for the Cultivation of Science
- Kolkata-700032
- India
| | - Krishna Das Saha
- Cancer Biology and Inflammatory Disorder Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Asim Bhaumik
- Department of Material Science
- Institution Association for the Cultivation of Science
- Kolkata-700032
- India
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195
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Ahn SY, Mun CH, Lee SH. Microfluidic spinning of fibrous alginate carrier having highly enhanced drug loading capability and delayed release profile. RSC Adv 2015. [DOI: 10.1039/c4ra11438h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Natural polymer-based drug carriers have been developed for antimicrobial applications but several problems remain with their poor controllability of drug loading and degradation.
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Affiliation(s)
- S. Y. Ahn
- Department of Biomedical Engineering
- College of Health Science
- Korea University
- Seoul
- Republic of Korea
| | - C. H. Mun
- Department of Biomedical Engineering
- College of Health Science
- Korea University
- Seoul
- Republic of Korea
| | - S. H. Lee
- Department of Biomedical Engineering
- College of Health Science
- Korea University
- Seoul
- Republic of Korea
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196
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Zeng B, Shi H, Liu Y. A versatile pH-responsive platform for intracellular protein delivery using calcium phosphate nanoparticles. J Mater Chem B 2015; 3:9115-9121. [DOI: 10.1039/c5tb01760b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly biocompatible nanoplatform for the intracellular delivery of different proteins, exhibiting pH-responsive release and efficient endosomal escape.
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Affiliation(s)
- Bingru Zeng
- CAS Key Laboratory of Soft Matter Chemistry
- CAS High Magnetic Field Laboratory
- Department of Chemistry
- University of Science and Technology of China
- Hefei
| | - Hongdong Shi
- CAS Key Laboratory of Soft Matter Chemistry
- CAS High Magnetic Field Laboratory
- Department of Chemistry
- University of Science and Technology of China
- Hefei
| | - Yangzhong Liu
- CAS Key Laboratory of Soft Matter Chemistry
- CAS High Magnetic Field Laboratory
- Department of Chemistry
- University of Science and Technology of China
- Hefei
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197
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Senthilkumar R, Karaman DŞ, Paul P, Björk EM, Odén M, Eriksson JE, Rosenholm JM. Targeted delivery of a novel anticancer compound anisomelic acid using chitosan-coated porous silica nanorods for enhancing the apoptotic effect. Biomater Sci 2015. [DOI: 10.1039/c4bm00278d] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Chitosan-coated and FA-conjugated mesoporous silica nanorods were developed for cancer-cell targeted delivery of a novel naturally derived anticancer compound.
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Affiliation(s)
| | - Didem Şen Karaman
- Laboratory of Physical Chemistry
- Åbo Akademi University
- FI-20500 Turku
- Finland
| | - Preethy Paul
- Department of Biosciences
- Cell biology
- Åbo Akademi University
- FI-20520 Turku
- Finland
| | - Emma M. Björk
- Nanostructured Materials Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Sweden
| | - Magnus Odén
- Nanostructured Materials Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Sweden
| | - John E. Eriksson
- Department of Biosciences
- Cell biology
- Åbo Akademi University
- FI-20520 Turku
- Finland
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198
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Abstract
When formulated as liquid dosage forms, therapeutic proteins and peptides often show instability during handling as a result of chemical degradation. Solid formulations are frequently required to maintain protein stability during storage, transport and upon administration. Herein we highlight current strategies used to formulate pharmaceutical proteins in the solid form. An overview of the physical instabilities which can arise with proteins is first described. The key solidification techniques of crystallization, freeze-drying and particle forming technologies are then discussed. Examples of current commercial products that are formulated in the solid state are provided and include neutral protamine Hagedorn – insulin crystal suspensions, freeze-dried monoclonal antibodies and leuproride polylactide-co-glycolide microparticles. Finally, future perspectives in solid-state protein formulation are described.
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199
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High-throughput in vitro drug release and pharmacokinetic simulation as a tool for drug delivery system development: application to intravitreal ocular administration. Int J Pharm 2014; 477:469-75. [PMID: 25445526 DOI: 10.1016/j.ijpharm.2014.10.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 10/27/2014] [Accepted: 10/28/2014] [Indexed: 11/21/2022]
Abstract
In vitro estimation of release kinetics from drug delivery systems is needed in formulation development. Cost-effective methods of assessment for delivery systems are needed particularly in the case of biologicals and drug administration routes that are difficult to screen in vivo (e.g. intraocular drug delivery). As a proof-of-concept, we demonstrate here a practical high-throughput methodology to investigate in vitro drug release and predict resulting drug concentrations in the eye after intravitreal administration. 96-well plate based assay aided with robotic sampling was used to study release of eight model drugs of varying physicochemical properties (dexamethasone, vancomycin, alpha-lactalbumin, lysozyme, myoglobin, albumin, lactoferrin, human IgG) from twelve alginate microsphere formulations. The amount of drug released over a period of time was assessed by photometric and fluorescence methods. In vitro drug release rates obtained were used in pharmacokinetic simulations using one-compartment model of the vitreal cavity with anatomical volume of distribution and clearance estimates based on the literature precedence. An integrated approach of drug release screening and pharmacokinetic simulations can prove to be a useful methodology in guiding formulation development for ocular delivery in animal models. In general, the methodology has the potential to be a cost-effective tool for early stage drug delivery system discovery and development.
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200
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Surface functional modification of self-assembled insulin nanospheres for improving intestinal absorption. Int J Biol Macromol 2014; 74:49-60. [PMID: 25433129 DOI: 10.1016/j.ijbiomac.2014.11.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 11/17/2014] [Accepted: 11/19/2014] [Indexed: 01/12/2023]
Abstract
In this work we fabricated therapeutic protein drugs such as insulin as free-carrier delivery system to improve their oral absorption efficiency. The formulation involved self-assembly of insulin into nanospheres (INS) by a novel thermal induced phase separation method. In consideration of harsh environment in gastrointestinal tract, surface functional modification of INS with ɛ-poly-L-lysine (EPL) was employed to form a core-shell structure (INS@EPL) and protect them from too fast dissociation before their arriving at target uptake sites. Both INS and INS@EPL were characterized as uniformly spherical particles with mean diameter size of 150-300 nm. The process of transient thermal treatment did not change their biological potency retention significantly. In vitro dissolution studies showed that shell cross-linked of INS with EPL improved the release profiles of insulin from the self-assembled nanospheres at intestinal pH. Confocal microscopy visualization and transport experiments proved the enhanced paracellular permeability of INS@EPL in Caco-2 cells. Compared to that of INS, enteral administration of INS@EPL at 20 IU/kg resulted in more significant hypoglycemic effects in diabetic rats up to 12 h. Accordingly, the results indicated that surface functional modification of self-assembled insulin nanospheres with shell cross-linked polycationic peptide could be a promising candidate for oral therapeutic protein delivery.
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