51
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Tschan MJL, Ieong NS, Todd R, Everson J, Dove AP. Unlocking the Potential of Poly(Ortho
Ester)s: A General Catalytic Approach to the Synthesis of Surface-Erodible Materials. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709934] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | - Nga Sze Ieong
- Department of Chemistry; The University of Warwick; Coventry CV4 7AL UK
| | - Richard Todd
- Department of Chemistry; The University of Warwick; Coventry CV4 7AL UK
| | - Jack Everson
- Department of Chemistry; The University of Warwick; Coventry CV4 7AL UK
| | - Andrew P. Dove
- Department of Chemistry; The University of Warwick; Coventry CV4 7AL UK
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52
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Bilhalva AF, Finger IS, Pereira RA, Corrêa MN, Burkert Del Pino FA. Utilization of biodegradable polymers in veterinary science and routes of administration: a literature review. JOURNAL OF APPLIED ANIMAL RESEARCH 2017. [DOI: 10.1080/09712119.2017.1378104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Alexandre Ferreira Bilhalva
- Department of Veterinary Clinic, Núcleo de Ensino, Pesquisa e Extensão em Pecuária, Federal University of Pelotas, Pelotas, Brazil
| | - Ilusca Sampaio Finger
- Department of Veterinary Clinic, Núcleo de Ensino, Pesquisa e Extensão em Pecuária, Federal University of Pelotas, Pelotas, Brazil
| | - Rubens Alves Pereira
- Department of Veterinary Clinic, Núcleo de Ensino, Pesquisa e Extensão em Pecuária, Federal University of Pelotas, Pelotas, Brazil
| | - Marcio Nunes Corrêa
- Department of Veterinary Clinic, Núcleo de Ensino, Pesquisa e Extensão em Pecuária, Federal University of Pelotas, Pelotas, Brazil
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53
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Gao Y, Zhang Y, Wang X, Sim K, Liu J, Chen J, Feng X, Xu H, Yu C. Moisture-triggered physically transient electronics. SCIENCE ADVANCES 2017; 3:e1701222. [PMID: 28879237 PMCID: PMC5580884 DOI: 10.1126/sciadv.1701222] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 08/08/2017] [Indexed: 05/21/2023]
Abstract
Physically transient electronics, a form of electronics that can physically disappear in a controllable manner, is very promising for emerging applications. Most of the transient processes reported so far only occur in aqueous solutions or biofluids, offering limited control over the triggering and degradation processes. We report novel moisture-triggered physically transient electronics, which exempt the needs of resorption solutions and can completely disappear within well-controlled time frames. The triggered transient process starts with the hydrolysis of the polyanhydride substrate in the presence of trace amounts of moisture in the air, a process that can generate products of corrosive organic acids to digest various inorganic electronic materials and components. Polyanhydride is the only example of polymer that undergoes surface erosion, a distinct feature that enables stable operation of the functional devices over a predefined time frame. Clear advantages of this novel triggered transience mode include that the lifetime of the devices can be precisely controlled by varying the moisture levels and changing the composition of the polymer substrate. The transience time scale can be tuned from days to weeks. Various transient devices, ranging from passive electronics (such as antenna, resistor, and capacitor) to active electronics (such as transistor, diodes, optoelectronics, and memories), and an integrated system as a platform demonstration have been developed to illustrate the concept and verify the feasibility of this design strategy.
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Affiliation(s)
- Yang Gao
- Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
| | - Ying Zhang
- Department of Polymer Science and Engineering, CAS (Chinese Academy of Science) Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xu Wang
- Materials Science and Engineering Program, University of Houston, Houston, TX 77204, USA
| | - Kyoseung Sim
- Materials Science and Engineering Program, University of Houston, Houston, TX 77204, USA
| | - Jingshen Liu
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA
| | - Ji Chen
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA
| | - Xue Feng
- Department of Engineering Mechanics, Center for Advanced Mechanics and Materials, Tsinghua University, Beijing 100084, China
| | - Hangxun Xu
- Department of Polymer Science and Engineering, CAS (Chinese Academy of Science) Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
- Corresponding author. (H.X.); (C.Y.)
| | - Cunjiang Yu
- Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA
- Department of Biomedical Engineering, University of Houston, Houston, TX 77204, USA
- Corresponding author. (H.X.); (C.Y.)
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54
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Laycock B, Nikolić M, Colwell JM, Gauthier E, Halley P, Bottle S, George G. Lifetime prediction of biodegradable polymers. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2017.02.004] [Citation(s) in RCA: 301] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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55
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Sachan R, Jaipan P, Zhang JY, Degan S, Erdmann D, Tedesco J, Vanderwal L, Stafslien SJ, Negut I, Visan A, Dorcioman G, Socol G, Cristescu R, Chrisey DB, Narayan RJ. Printing amphotericin B on microneedles using matrix-assisted pulsed laser evaporation. Int J Bioprint 2017; 3:004. [PMID: 33094188 PMCID: PMC7575625 DOI: 10.18063/ijb.2017.02.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 07/03/2017] [Indexed: 11/23/2022] Open
Abstract
Transdermal delivery of amphotericin B, a pharmacological agent with activity against fungi and parasitic protozoa, is a challenge since amphotericin B exhibits poor solubility in aqueous solutions at physiologic pH values. In this study, we have used a laser-based printing approach known as matrix-assisted pulsed laser evaporation to print amphotericin B on the surfaces of polyglycolic acid microneedles that were prepared using a combination of injection molding and drawing lithography. In a modified agar disk diffusion assay, the amphotericin B-loaded microneedles showed concentration-dependent activity against the yeast Candida albicans. The results of this study suggest that matrix-assisted pulsed laser evaporation may be used to print amphotericin B and other drugs that have complex solubility issues on the surfaces of microneedles.
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Affiliation(s)
- Roger Sachan
- Wake Early College of Health and Sciences, Raleigh, North Carolina, USA
| | - Panupong Jaipan
- Joint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Raleigh, North Carolina, USA
| | - Jennifer Y Zhang
- Department of Dermatology, Duke University Medical Center, Durham, North Carolina, USA
| | - Simone Degan
- Department of Dermatology, Duke University Medical Center, Durham, North Carolina, USA
| | - Detlev Erdmann
- Department of Surgery, Division of Plastic, Reconstructive, Maxillofacial and Oral Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | | | - Lyndsi Vanderwal
- Office of Research and Creativity Activity, North Dakota State University, 1715 Research Park Drive, Fargo ND, USA
| | - Shane J Stafslien
- Office of Research and Creativity Activity, North Dakota State University, 1715 Research Park Drive, Fargo ND, USA
| | - Irina Negut
- National Institute for Lasers, Plasma and Radiation Physics, Lasers Department, P.O. Box MG-36, Bucharest-Magurele, Romania
| | - Anita Visan
- National Institute for Lasers, Plasma and Radiation Physics, Lasers Department, P.O. Box MG-36, Bucharest-Magurele, Romania
| | - Gabriela Dorcioman
- National Institute for Lasers, Plasma and Radiation Physics, Lasers Department, P.O. Box MG-36, Bucharest-Magurele, Romania
| | - Gabriel Socol
- National Institute for Lasers, Plasma and Radiation Physics, Lasers Department, P.O. Box MG-36, Bucharest-Magurele, Romania
| | - Rodica Cristescu
- National Institute for Lasers, Plasma and Radiation Physics, Lasers Department, P.O. Box MG-36, Bucharest-Magurele, Romania
| | - Douglas B Chrisey
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA, USA
| | - Roger J Narayan
- Joint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Raleigh, North Carolina, USA
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56
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Wafa EI, Geary SM, Goodman JT, Narasimhan B, Salem AK. The effect of polyanhydride chemistry in particle-based cancer vaccines on the magnitude of the anti-tumor immune response. Acta Biomater 2017; 50:417-427. [PMID: 28063991 DOI: 10.1016/j.actbio.2017.01.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/07/2016] [Accepted: 01/03/2017] [Indexed: 01/16/2023]
Abstract
The goal of this research was to study the effect of polyanhydride chemistry on the immune response induced by a prophylactic cancer vaccine based on biodegradable polyanhydride particles. To achieve this goal, different compositions of polyanhydride copolymers based on 1,8-bis-(p-carboxyphenoxy)-3,6-dioxaoctane (CPTEG), 1,6-bis-(p-carboxyphenoxy)-hexane (CPH), and sebacic anhydride (SA) were synthesized by melt polycondensation, and polyanhydride copolymer particles encapsulating a model antigen, ovalbumin (OVA), were then synthesized using a double emulsion solvent evaporation technique. The ability of three different compositions of polyanhydride copolymers (50:50 CPTEG:CPH, 20:80 CPTEG:CPH, and 20:80 CPH:SA) encapsulating OVA to elicit immune responses was investigated. In addition, the impact of unmethylated oligodeoxynucleotides containing deoxycytidyl-deoxyguanosine dinucleotides (CpG ODN), an immunological adjuvant, on the immune response was also studied. The immune response to cancer vaccines was measured after treatment of C57BL/6J mice with two subcutaneous injections, seven days apart, of 50μg OVA encapsulated in particles composed of different polyanhydride copolymers with or without 25μg CpG ODN. In vivo studies showed that 20:80 CPTEG:CPH particles encapsulating OVA significantly stimulated the highest level of CD8+ T lymphocytes, generated the highest serum titers of OVA-specific IgG antibodies, and provided longer protection against tumor challenge with an OVA-expressing thymoma cell line in comparison to formulations made from other polyanhydride copolymers. The results also revealed that vaccination with CpG ODN along with polyanhydride particles encapsulating OVA did not enhance the immunogenicity of OVA. These results accentuate the crucial role of the copolymer composition of polyanhydrides in stimulating the immune response and provide important insights on rationally designing efficacious cancer vaccines. STATEMENT OF SIGNIFICANCE Compared to soluble cancer vaccine formulations, tumor antigens encapsulated in biodegradable polymeric particles have been shown to sustain antigen release and provide long-term protection against tumor challenge by improving the immune response towards the antigen. Treatment of mice with cancer vaccines based on different polyanhydride copolymers encapsulating OVA resulted in stimulation of tumor-specific immune responses with different magnitudes. This clearly indicates that polyanhydride chemistry plays a substantial role in stimulating the immune response. Vaccination with 20:80 CPTEG:CPH/OVA, the most hydrophobic formulation, stimulated the strongest cellular and humoral immune responses and provided the longest survival outcome without adding any other adjuvant. The most important finding in this study is that the copolymer composition of polyanhydride particle-based vaccines can have a direct effect on the magnitude of the antitumor immune response and should be selected carefully in order to achieve optimal cancer vaccine efficacy.
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Affiliation(s)
- Emad I Wafa
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA
| | - Sean M Geary
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA
| | - Jonathan T Goodman
- Department of Chemical and Biological Engineering, College of Engineering, Iowa State University, Ames, IA 50011, USA
| | - Balaji Narasimhan
- Department of Chemical and Biological Engineering, College of Engineering, Iowa State University, Ames, IA 50011, USA
| | - Aliasger K Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA.
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57
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Sobiecka A, Synoradzki L, Hajmowicz H, Zawada K. Tartaric Acid and its Derivatives. Part 17. Synthesis and Applications of Tartrates. ORG PREP PROCED INT 2017. [DOI: 10.1080/00304948.2017.1260392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Agnieszka Sobiecka
- Laboratory of Technological Processes, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Ludwik Synoradzki
- Laboratory of Technological Processes, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Halina Hajmowicz
- Laboratory of Technological Processes, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Krzysztof Zawada
- Laboratory of Technological Processes, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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58
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Washington MA, Swiner DJ, Bell KR, Fedorchak MV, Little SR, Meyer TY. The impact of monomer sequence and stereochemistry on the swelling and erosion of biodegradable poly(lactic-co-glycolic acid) matrices. Biomaterials 2016; 117:66-76. [PMID: 27936418 DOI: 10.1016/j.biomaterials.2016.11.037] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 11/12/2016] [Accepted: 11/24/2016] [Indexed: 01/01/2023]
Abstract
Monomer sequence is demonstrated to be a primary factor in determining the hydrolytic degradation profile of poly(lactic-co-glycolic acid)s (PLGAs). Although many approaches have been used to tune the degradation of PLGAs, little effort has been expended in exploring the sequence-control strategy exploited by nature in biopolymers. Cylindrical matrices and films prepared from a series of sequenced and random PLGAs were subjected to hydrolysis in a pH 7.4 buffer at 37 °C. Swelling ranged from 107% for the random racemic PLGA with a 50:50 ratio of lactic (L) to glycolic (G) units to 6% for the sequenced alternating copolymer poly LG. Erosion followed an inverse trend with the random 50:50 PLGA showing an erosion half-life of 3-4 weeks while poly LG required ca. >10 weeks. Stereosequence was found to play a large role in determining swelling and erosion; stereopure analogs swelled less and were slower to lose mass. Molecular weight loss followed similar trends and increases in dispersity correlated with the onset of significant swelling. The relative proportion of rapidly cleavable G-G linkages relative to G-L/L-G (moderate) and L-L (slow) correlates strongly with the degree of swelling observed and the rate of erosion. The dramatic sequence-dependent variation in swelling, in the absence of a parallel hydrophilicity trend, suggest that osmotic pressure, driven by the differential accumulation of degradation products, plays an important role.
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Affiliation(s)
| | - Devin J Swiner
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Kerri R Bell
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Morgan V Fedorchak
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15260, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15260, USA; Fox Center for Vision Restoration, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Steven R Little
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Immunology, University of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Tara Y Meyer
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15260, USA.
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59
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Faig JJ, Smith K, Moretti A, Yu W, Uhrich KE. One-Pot Polymerization Syntheses: Incorporating Bioactives into Poly(anhydride-esters). MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600115] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jonathan J. Faig
- Department of Chemistry and Chemical Biology; Rutgers University; 610 Taylor Road Piscataway NJ 08854-8087 USA
| | - Kervin Smith
- Department of Biochemical and Chemical Engineering; Rutgers University; Piscataway NJ 08854 USA
| | - Alysha Moretti
- Department of Chemistry and Chemical Biology; Rutgers University; 610 Taylor Road Piscataway NJ 08854-8087 USA
| | - Weiling Yu
- Department of Biomedical Engineering; Rutgers University; 599 Taylor Road Piscataway NJ 08854-8087 USA
| | - Kathryn E. Uhrich
- Department of Chemistry and Chemical Biology; Rutgers University; 610 Taylor Road Piscataway NJ 08854-8087 USA
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60
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Mohammed HS, Snyder BL, Samways DSK, Shipp DA. Quantitative and qualitative toxicological evaluation of thiol-ene “click” chemistry-based polyanhydrides and their degradation products. J Biomed Mater Res A 2016; 104:1936-45. [DOI: 10.1002/jbm.a.35724] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 03/06/2016] [Accepted: 03/22/2016] [Indexed: 12/29/2022]
Affiliation(s)
- Halimatu S. Mohammed
- Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam New York 13699-5810
| | - Brittany L. Snyder
- Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam New York 13699-5810
| | | | - Devon A. Shipp
- Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam New York 13699-5810
- Center for Advanced Materials Processing, Clarkson University; Potsdam New York 13699-5810
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61
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Kamaly N, Yameen B, Wu J, Farokhzad OC. Degradable Controlled-Release Polymers and Polymeric Nanoparticles: Mechanisms of Controlling Drug Release. Chem Rev 2016; 116:2602-63. [PMID: 26854975 PMCID: PMC5509216 DOI: 10.1021/acs.chemrev.5b00346] [Citation(s) in RCA: 1551] [Impact Index Per Article: 193.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nazila Kamaly
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Basit Yameen
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Jun Wu
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Omid C. Farokhzad
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
- King Abdulaziz University, Jeddah 21589, Saudi Arabia
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62
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Prudencio A, Faig JJ, Song M, Uhrich KE. Phenolic Acid-based Poly(anhydride-esters) as Antioxidant Biomaterials. Macromol Biosci 2016; 16:214-22. [PMID: 26425923 PMCID: PMC4752411 DOI: 10.1002/mabi.201500244] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 09/09/2015] [Indexed: 11/11/2022]
Abstract
Poly(anhydride-esters) comprised of naturally occurring, non-toxic phenolic acids, namely syringic and vanillic acid, with antioxidant properties were prepared via solution polymerization methods. Polymer and polymer precursor physiochemical properties were characterized, including polymer molecular weight and thermal properties. In vitro release studies illustrated that polymer hydrolytic degradation was influenced by relative hydrophobicity and degree of methoxy substitution of the phenolic acids. Further, the released phenolic acids were found to maintain antioxidant potency relative to free phenolic acid controls as determined by a 2,2-diphenyl-1-picrylhydrazyl assay. Polymer cytotoxicity was assessed with L929 fibroblasts in polymer-containing media; appropriate cell morphology and high fibroblast proliferation were obtained for the polymers at the lower concentrations. These polymers deliver non-cytotoxic levels of naturally occurring antioxidants, which could be efficacious in topical delivery of antioxidant therapies.
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Affiliation(s)
- Almudena Prudencio
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, USA
| | - Jonathan J Faig
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, USA
| | - MinJung Song
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854-8087, USA
| | - Kathryn E Uhrich
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, USA.
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63
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Dasgupta Q, Chatterjee K, Madras G. Physical insights into salicylic acid release from poly(anhydrides). Phys Chem Chem Phys 2016; 18:2112-9. [PMID: 26689269 DOI: 10.1039/c5cp06858d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Salicylic acid (SA) based biodegradable polyanhydrides (PAHs) are of great interest for drug delivery in a variety of diseases and disorders owing to the multi-utility of SA. There is a need for the design of SA-based PAHs for tunable drug release, optimized for the treatment of different diseases. In this study, we devised a simple strategy for tuning the release properties and erosion kinetics of a family of PAHs. PAHs incorporating SA were derived from related aliphatic diacids, varying only in the chain length, and prepared by simple melt condensation polymerization. Upon hydrolysis induced erosion, the polymer degrades into cytocompatible products, including the incorporated bioactive SA and diacid. The degradation follows first order kinetics with the rate constant varying by nearly 25 times between the PAH obtained with adipic acid and that with dodecanedioic acid. The release profiles have been tailored from 100% to 50% SA release in 7 days across the different PAHs. The release rate constants of these semi-crystalline, surface eroding PAHs decreased almost linearly with an increase in the diacid chain length, and varied by nearly 40 times between adipic acid and dodecanedioic acid PAH. The degradation products with SA concentration in the range of 30-350 ppm were used to assess cytocompatibility and showed no cytotoxicity to HeLa cells. This particular strategy is expected to (a) enable synthesis of application specific PAHs with tunable erosion and release profiles; (b) encompass a large number of drugs that may be incorporated into the PAH matrix. Such a strategy can potentially be extended to the controlled release of other drugs that may be incorporated into the PAH backbone and has important implications for the rational design of drug eluting bioactive polymers.
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Affiliation(s)
- Queeny Dasgupta
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore-560012, India.
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64
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Dasgupta Q, Madras G, Chatterjee K. Controlled release kinetics of p-aminosalicylic acid from biodegradable crosslinked polyesters for enhanced anti-mycobacterial activity. Acta Biomater 2016; 30:168-176. [PMID: 26596566 DOI: 10.1016/j.actbio.2015.11.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 09/26/2015] [Accepted: 11/16/2015] [Indexed: 01/16/2023]
Abstract
Unlike conventional polymeric drug delivery systems, where drugs are entrapped in polymers, this study focuses on the incorporation of the drug into the polymer backbone to achieve higher loading and sustained release. Crosslinked, biodegradable, xylitol based polyesters have been synthesized in this study. The bioactive drug moiety, p-aminosalicylic acid (PAS), was incorporated in xylitol based polyesters to impart its anti-mycobacterial activity. To understand the influence of the monomer chemistry on the incorporation of PAS and its subsequent release from the polymer, different diacids have been used. Controlled release profiles of the drug from these polyesters were studied under normal physiological conditions. The degradation of the polyesters varied from 48% to 76% and the release of PAS ranged from 54% to 65% of its initial loading in 7days. A new model was developed to explain the release kinetics of PAS from the polymer that accounted for the polymer degradation and drug concentration. The thermal, mechanical, drug release and cytocompatibility properties of the polymers indicate their suitability in biomedical applications. The released products from these polymers were observed to be pharmacologically active against Mycobacteria. The high drug loading and sustained release also ensured enhanced efficacy. These polymers form biocompatible, biodegradable polyesters where the sustained release of PAS may be tailored for potential treatment of mycobacterial infections. STATEMENT OF SIGNIFICANCE In the present work, we report on novel polyesters with p-aminosalicylic acid (PAS) incorporated in the polymer backbone. The current work aims to achieve controlled release of PAS and ensures the delivered PAS is stable and pharmacologically active. The novelty of this work primarily involves the synthetic chemistry of polymerization and detailed analysis and efficacy of active PAS delivery. A new kinetic model has been developed to explain the PAS release profiles. These polymers are biodegradable, cytocompatible and anti-mycobacterial in nature.
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Affiliation(s)
- Queeny Dasgupta
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Giridhar Madras
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India; Department of Chemical Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Kaushik Chatterjee
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India; Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
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Abstract
This review focusses on polyanhydrides, a fascinating class of degradable polymers that have been used in and investigated for many bio-related applications because of their degradability and capacity to undergo surface erosion. This latter phenomenon is driven by hydrolysis of the anhydride moieties at the surface and high hydrophobicity of the polymer such that degradation and mass loss (erosion) occur before water can penetrate deep within the bulk of the polymer. As such, when surface-eroding polymers are used as therapeutic delivery vehicles, the rate of delivery is often controlled by the rate of polymer erosion, providing predictable and controlled release rates that are often zero-order. These desirable attributes are heavily influenced by polymer composition and morphology, and therefore also monomer structure and polymerization method. This review examines approaches for polyanhydride synthesis, discusses their general thermomechanical properties, surveys their hydrolysis and degradation processes along with their biocompatibility, and looks at recent developments and uses of polyanhydrides in drug delivery, stimuli-responsive materials, and novel nanotechnologies.
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66
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Faig JJ, Klein S, Ouimet MA, Yu W, Uhrich KE. Attenuating Oxidative Stress Via Oxalate Ester-Containing Ferulic Acid-Based Poly(anhydride-esters) that Scavenge Hydrogen Peroxide. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500411] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jonathan J. Faig
- Department of Chemistry and Chemical Biology; Rutgers University; 610 Taylor Road Piscataway NJ 08854-8087 USA
| | - Sarah Klein
- National Polytechnic Institute of Chemical and Industrial Engineering and Technology; Toulouse 31030 France
| | - Michelle A. Ouimet
- Department of Chemistry and Chemical Biology; Rutgers University; 610 Taylor Road Piscataway NJ 08854-8087 USA
| | - Weiling Yu
- Department of Biomedical Engineering; Rutgers University; 599 Taylor Road Piscataway NJ 08854-8087 USA
| | - Kathryn E. Uhrich
- Department of Chemistry and Chemical Biology; Rutgers University; 610 Taylor Road Piscataway NJ 08854-8087 USA
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67
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Ouimet MA, Faig JJ, Yu W, Uhrich KE. Ferulic Acid-Based Polymers with Glycol Functionality as a Versatile Platform for Topical Applications. Biomacromolecules 2015; 16:2911-9. [PMID: 26258440 DOI: 10.1021/acs.biomac.5b00824] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ferulic acid-based polymers with aliphatic linkages have been previously synthesized via solution polymerization methods, yet they feature relatively slow ferulic acid release rates (∼11 months to 100% completion). To achieve a more rapid release rate as required in skin care formulations, ferulic acid-based polymers with ethylene glycol linkers were prepared to increase hydrophilicity and, in turn, increase ferulic acid release rates. The polymers were characterized using nuclear magnetic resonance and Fourier transform infrared spectroscopies to confirm chemical composition. The molecular weights, thermal properties (e.g., glass transition temperature), and contact angles were also obtained and the polymers compared. Polymer glass transition temperature was observed to decrease with increasing linker molecule length, whereas increasing oxygen content decreased polymer contact angle. The polymers' chemical structures and physical properties were shown to influence ferulic acid release rates and antioxidant activity. In all polymers, ferulic acid release was achieved with no bioactive decomposition. These polymers demonstrate the ability to strategically release ferulic acid at rates and concentrations relevant for topical applications such as skin care products.
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Affiliation(s)
- Michelle A Ouimet
- Department of Chemistry and Chemical Biology and ‡Department of Biomedical Engineering, Rutgers University , Piscataway, New Jersey 08854, United States
| | - Jonathan J Faig
- Department of Chemistry and Chemical Biology and ‡Department of Biomedical Engineering, Rutgers University , Piscataway, New Jersey 08854, United States
| | - Weiling Yu
- Department of Chemistry and Chemical Biology and ‡Department of Biomedical Engineering, Rutgers University , Piscataway, New Jersey 08854, United States
| | - Kathryn E Uhrich
- Department of Chemistry and Chemical Biology and ‡Department of Biomedical Engineering, Rutgers University , Piscataway, New Jersey 08854, United States
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68
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Ganesh M, Ubaidulla U, Hemalatha P, Peng MM, Jang HT. Development of duloxetine hydrochloride loaded mesoporous silica nanoparticles: characterizations and in vitro evaluation. AAPS PharmSciTech 2015; 16:944-51. [PMID: 25604699 PMCID: PMC4508298 DOI: 10.1208/s12249-014-0273-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 12/16/2014] [Indexed: 11/30/2022] Open
Abstract
This study investigated the potential use of mesoporous silica nanoparticles (MSNs) as a carrier for duloxetine hydrochloride (DX), which is prone to acid degradation. Sol-gel and solvothermal methods were used to synthesize the MSNs, which, after calcination and drug loading, were then characterized using X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) technique, thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and diffuse reflectance ultraviolet-visible (DRS-UV-Vis) spectroscopy. Releases of DX from the MSNs were good in pH 7.4 (90%) phosphate buffer but poor in acidic pH (40%). In a comparative release study between the MSNs in phosphate buffer, TW60-3DX showed sustained release for 140 h, which was higher than the other nanoparticles. The mechanism of DX release from the MSNs was studied using Peppas kinetics model. The "n" value of all three MSNs ranged from 0.45 to 1 with a correlation coefficient (r (2)) >0.9, which indicated that the release of the drug from the system follows the anomalous transport or non-Fickian diffusion. The results supported the efficacy of mesoporous silica nanoparticles synthesized here as a promising carrier for duloxetine hydrochloride with higher drug loading and greater pH-sensitive release.
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Affiliation(s)
- Mani Ganesh
- />Department of Chemical Engineering, Hanseo University, Seosan-si, 356 706 South Korea
| | - Udhumansha Ubaidulla
- />Department of Pharmaceutics, C.L.Baid Metha College of Pharmacy, Chennai, India
| | - Pushparaj Hemalatha
- />Department of Chemical Engineering, Hanseo University, Seosan-si, 356 706 South Korea
| | - Mei Mei Peng
- />Department of Chemical Engineering, Hanseo University, Seosan-si, 356 706 South Korea
| | - Hyun Tae Jang
- />Department of Chemical Engineering, Hanseo University, Seosan-si, 356 706 South Korea
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69
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Stebbins ND, Faig JJ, Yu W, Guliyev R, Uhrich KE. Polyactives: controlled and sustained bioactive release via hydrolytic degradation. Biomater Sci 2015; 3:1171-87. [PMID: 26222033 PMCID: PMC4519997 DOI: 10.1039/c5bm00051c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Significant and promising advances have been made in the polymer field for controlled and sustained bioactive delivery. Traditionally, small molecule bioactives have been physically incorporated into biodegradable polymers; however, chemical incorporation allows for higher drug loading, more controlled release, and enhanced processability. Moreover, the advent of bioactive-containing monomer polymerization and hydrolytic biodegradability allows for tunable bioactive loading without yielding a polymer residue. In this review, we highlight the chemical incorporation of different bioactive classes into novel biodegradable and biocompatible polymers. The polymer design, synthesis, and formulation are summarized in addition to the evaluation of bioactivity retention upon release via in vitro and in vivo studies.
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Affiliation(s)
- N D Stebbins
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854, USA.
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70
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Yang M, Yu T, Wood J, Wang YY, Tang BC, Zeng Q, Simons BW, Fu J, Chuang CM, Lai SK, Wu TC, Hung CF, Hanes J. Intraperitoneal delivery of paclitaxel by poly(ether-anhydride) microspheres effectively suppresses tumor growth in a murine metastatic ovarian cancer model. Drug Deliv Transl Res 2015; 4:203-9. [PMID: 24816829 DOI: 10.1007/s13346-013-0190-7] [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] [Indexed: 10/25/2022]
Abstract
Intraperitoneal (IP) chemotherapy is more effective than systemic chemotherapy for treating advanced ovarian cancer, but is typically associated with severe complications due to high dose, frequent administration schedule, and use of non-biocompatible excipients/delivery vehicles. Here, we developed paclitaxel (PTX)-loaded microspheres composed of di-block copolymers of poly(ethylene glycol) and poly(sebacic acid) (PEG-PSA) for safe and sustained IP chemotherapy. PEG-PSA microspheres provided efficient loading (~ 13% w/w) and prolonged release (~ 13 days) of PTX. In a murine ovarian cancer model, a single dose of IP PTX/PEG-PSA particles effectively suppressed tumor growth for more than 40 days and extended the median survival time to 75 days compared to treatments with Taxol(®) (47 days) or IP placebo particles (34 days). IP PTX/PEG-PSA was well tolerated, with only minimal to mild inflammation. Our findings support PTX/PEG-PSA microspheres as a promising drug delivery platform for IP therapy of ovarian cancer, and potentially other metastatic peritoneal cancers.
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Affiliation(s)
- Ming Yang
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, 720 Rutland Avenue, Baltimore, MD 21205 (USA) ; Center for Nanomedicine, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21287 (USA)
| | - Tao Yu
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, 720 Rutland Avenue, Baltimore, MD 21205 (USA) ; Center for Nanomedicine, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21287 (USA)
| | - Joseph Wood
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, 720 Rutland Avenue, Baltimore, MD 21205 (USA)
| | - Ying-Ying Wang
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, 720 Rutland Avenue, Baltimore, MD 21205 (USA) ; Center for Nanomedicine, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21287 (USA)
| | - Benjamin C Tang
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218 (USA) ; Center for Nanomedicine, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21287 (USA)
| | - Qi Zeng
- Department of Pathology, Johns Hopkins University School of Medicine, 600 N Wolfe Street, Baltimore, MD 21287 (USA)
| | - Brian W Simons
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, 1550 Orleans Street, Baltimore, MD, 21231 (USA)
| | - Jie Fu
- Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21287 (USA) ; Center for Nanomedicine, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21287 (USA)
| | - Chi-Mu Chuang
- Department of Pathology, Johns Hopkins University School of Medicine, 600 N Wolfe Street, Baltimore, MD 21287 (USA)
| | - Samuel K Lai
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218 (USA)
| | - T-C Wu
- Department of Pathology, Johns Hopkins University School of Medicine, 600 N Wolfe Street, Baltimore, MD 21287 (USA) ; Department of Obstetrics and Gynecology, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, Baltimore, MD 21287 (USA) ; Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, Baltimore, MD 21287 (USA)
| | - Chien-Fu Hung
- Department of Pathology, Johns Hopkins University School of Medicine, 600 N Wolfe Street, Baltimore, MD 21287 (USA) ; Department of Obstetrics and Gynecology, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, Baltimore, MD 21287 (USA) ; Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, Baltimore, MD 21287 (USA)
| | - Justin Hanes
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, 720 Rutland Avenue, Baltimore, MD 21205 (USA) ; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218 (USA) ; Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21287 (USA) ; Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, Baltimore, MD 21287 (USA) ; Center for Cancer Nanotechnology Excellence, Institute for NanoBioTechnology, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218 (USA) ; Center for Nanomedicine, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21287 (USA)
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71
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Snyder SS, Anastasiou TJ, Uhrich KE. In Vitro Degradation of an Aromatic Polyanhydride with Enhanced Thermal Properties. Polym Degrad Stab 2015; 115:70-76. [PMID: 25870460 PMCID: PMC4392399 DOI: 10.1016/j.polymdegradstab.2015.02.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Polyanhydrides have been studied as a drug delivery vehicles due to their surface-eroding behavior which results in zero-order release. However, many polyanhyrides have thermal and solubility properties that make them difficult to formulate for these applications. Poly[α,α'-bis(ortho-carboxyphenoxy)-para-xylene] (oCPX) is an aromatic polyanhydride that has thermal and solubility properties enabling facile processing. The polymer's in vitro degradation profile exhibited an induction period up to 10 days in which degradation product concentration in the media was minimal, followed by a period of stable release of the biocompatible degradation product. Scanning electron microscope images and molecular weight changes of the polymer matrices confirm that this polymer is primarily surface-eroding. The combination of thermal properties, solubility, polymer degradation time, and erosion mechanism indicate that poly(oCPX) is be a suitable matrix candidate for extended, controlled drug delivery.
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Affiliation(s)
- Sabrina S. Snyder
- Department of Biomedical Engineering, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854
| | - Theodore J. Anastasiou
- Department of Chemistry & Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854
| | - Kathryn E. Uhrich
- Department of Biomedical Engineering, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854
- Department of Chemistry & Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854
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72
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Poetz KL, Mohammed HS, Shipp DA. Surface Eroding, Semicrystalline Polyanhydrides via Thiol–Ene “Click” Photopolymerization. Biomacromolecules 2015; 16:1650-9. [DOI: 10.1021/acs.biomac.5b00280] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Katie L. Poetz
- Department
of Chemistry and Biomolecular Science and ‡Center for Advanced Materials Processing, Clarkson University, Potsdam, New York 13699-5810, United States
| | - Halimatu S. Mohammed
- Department
of Chemistry and Biomolecular Science and ‡Center for Advanced Materials Processing, Clarkson University, Potsdam, New York 13699-5810, United States
| | - Devon A. Shipp
- Department
of Chemistry and Biomolecular Science and ‡Center for Advanced Materials Processing, Clarkson University, Potsdam, New York 13699-5810, United States
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73
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Stanković M, Frijlink HW, Hinrichs WLJ. Polymeric formulations for drug release prepared by hot melt extrusion: application and characterization. Drug Discov Today 2015; 20:812-23. [PMID: 25660507 DOI: 10.1016/j.drudis.2015.01.012] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 01/08/2015] [Accepted: 01/27/2015] [Indexed: 12/15/2022]
Abstract
Over the past few decades hot melt extrusion (HME) has emerged as a powerful processing technology for the production of pharmaceutical solid dosage forms in which an active pharmaceutical ingredient (API) is dispersed into polymer matrices. It has been shown that formulations using HME can provide time-controlled, sustained and targeted drug delivery, and improved bioavailability of poorly soluble drugs. In this review, the basic principles of the HME process are described together with an overview of some of the most common biodegradable and nonbiodegradable polymers used for the preparation of different formulations using this method. Further, the applications of HME in drug delivery and analytical techniques employed to characterize HME products are addressed.
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Affiliation(s)
- Milica Stanković
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands; Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, A-8010, Graz, Austria.
| | - Henderik W Frijlink
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Wouter L J Hinrichs
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
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74
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Domanskyi S, Poetz KL, Shipp DA, Privman V. Reaction-diffusion degradation model for delayed erosion of cross-linked polyanhydride biomaterials. Phys Chem Chem Phys 2015; 17:13215-22. [DOI: 10.1039/c5cp00473j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Delayed erosion of highly cross-linked polyanhydrides is attributable to the nonlinear dependence of the degradation rates on water concentration.
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Affiliation(s)
| | - Katie L. Poetz
- Department of Chemistry and Biomolecular Science
- Clarkson University
- Potsdam
- USA
| | - Devon A. Shipp
- Department of Chemistry and Biomolecular Science
- Clarkson University
- Potsdam
- USA
- Center for Advanced Materials Processing
| | - Vladimir Privman
- Department of Physics
- Clarkson University
- Potsdam
- USA
- Center for Advanced Materials Processing
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75
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Poetz KL, Durham OZ, Shipp DA. Polyanhydride nanoparticles by ‘click’ thiol–ene polymerization. Polym Chem 2015. [DOI: 10.1039/c5py00843c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The production of degradable polyanhydride-based nanoparticles using thiol–ene ‘click’ polymerizations is described.
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Affiliation(s)
- Katie L. Poetz
- Department of Chemistry & Biomolecular Science
- Clarkson University
- Potsdam
- USA
| | - Olivia Z. Durham
- Department of Chemistry & Biomolecular Science
- Clarkson University
- Potsdam
- USA
| | - Devon A. Shipp
- Department of Chemistry & Biomolecular Science
- Clarkson University
- Potsdam
- USA
- Center for Advanced Materials Processing
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76
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Stebbins ND, Ouimet MA, Uhrich KE. Antibiotic-containing polymers for localized, sustained drug delivery. Adv Drug Deliv Rev 2014; 78:77-87. [PMID: 24751888 PMCID: PMC4201908 DOI: 10.1016/j.addr.2014.04.006] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 03/17/2014] [Accepted: 04/10/2014] [Indexed: 11/26/2022]
Abstract
Many currently used antibiotics suffer from issues such as systemic toxicity, short half-life, and increased susceptibility to bacterial resistance. Although most antibiotic classes are administered systemically through oral or intravenous routes, a more efficient delivery system is needed. This review discusses the chemical conjugation of antibiotics to polymers, achieved by forming covalent bonds between antibiotics and a pre-existing polymer or by developing novel antibiotic-containing polymers. Through conjugating antibiotics to polymers, unique polymer properties can be taken advantage of. These polymeric antibiotics display controlled, sustained drug release and vary in antibiotic class type, synthetic method, polymer composition, bond lability, and antibacterial activity. The polymer synthesis, characterization, drug release, and antibacterial activities, if applicable, will be presented to offer a detailed overview of each system.
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Affiliation(s)
- Nicholas D Stebbins
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road Piscataway, NJ 08854, USA
| | - Michelle A Ouimet
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road Piscataway, NJ 08854, USA
| | - Kathryn E Uhrich
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road Piscataway, NJ 08854, USA.
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77
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Śmiga-Matuszowicz M, Jaszcz K, Łukaszczyk J, Kaczmarek M, Lesiak M, Sieroń AL, Staszuk M, Pilawka R, Mierzwiński M, Kusz D. Characterization of polysuccinate and hydroxyapatite-based nanocomposites containing poly(ester-anhydride) microspheres. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Monika Śmiga-Matuszowicz
- Silesian University of Technology; Department of Physical Chemistry and Technology of Polymers; ul. M. Strzody 9 44-100 Gliwice Poland
| | - Katarzyna Jaszcz
- Silesian University of Technology; Department of Physical Chemistry and Technology of Polymers; ul. M. Strzody 9 44-100 Gliwice Poland
| | - Jan Łukaszczyk
- Silesian University of Technology; Department of Physical Chemistry and Technology of Polymers; ul. M. Strzody 9 44-100 Gliwice Poland
| | - Marcin Kaczmarek
- Silesian University of Technology; Department of Biomaterials and Medical Devices Engineering; ul. de Gaulle`a 66 41-800 Zabrze Poland
| | - Marta Lesiak
- Medical University of Silesia; Department of General and Molecular Biology and Genetics; ul. Medyków 18 40-752 Katowice Poland
| | - Aleksander L. Sieroń
- Medical University of Silesia; Department of General and Molecular Biology and Genetics; ul. Medyków 18 40-752 Katowice Poland
| | - Marcin Staszuk
- Silesian University of Technology; Institute of Engineering Materials and Biomaterials; ul. Konarskiego 18A 44-100 Gliwice Poland
| | - Ryszard Pilawka
- West Pomeranian University of Technology; Polymer Institute; ul. Pułaskiego 10 70-322 Szczecin Poland
| | - Maciej Mierzwiński
- Medical University of Silesia; Department of Orthopedics and Traumatology; ul. Ziołowa 45 40-635 Katowice Poland
| | - Damian Kusz
- Medical University of Silesia; Department of Orthopedics and Traumatology; ul. Ziołowa 45 40-635 Katowice Poland
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78
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Bao L, Bian L, Zhao M, Lei J, Wang J. Synthesis and self-assembly behavior of a biodegradable and sustainable soybean oil-based copolymer nanomicelle. NANOSCALE RESEARCH LETTERS 2014; 9:391. [PMID: 25170329 PMCID: PMC4141661 DOI: 10.1186/1556-276x-9-391] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Accepted: 08/06/2014] [Indexed: 05/31/2023]
Abstract
Herein, we report a novel amphiphilic biodegradable and sustainable soybean oil-based copolymer (SBC) prepared by grafting hydrophilic and biocompatible hydroxyethyl acrylate (HEA) polymeric segments onto the natural hydrophobic soybean oil chains. FTIR, H(1)-NMR, and GPC measurements have been used to investigate the molecular structure of the obtained SBC macromolecules. Self-assembly behaviors of the prepared SBC in aqueous solution have also been extensively evaluated by fluorescence spectroscopy and transmission electron microscopy. The prepared SBC nanocarrier with the size range of 40 to 80 nm has a potential application in the biomedical field.
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Affiliation(s)
- Lixia Bao
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Longchun Bian
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Mimi Zhao
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Jingxin Lei
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jiliang Wang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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79
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80
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Bao L, Luo X, Zhang D, Lei J, Cao Q, Wang J. Synthesis, characterization, and self-assembly behaviors of a biodegradable and anti-clotting poly(EDTA-diol-co-butylene adipate glycol urethanes). J Mater Chem B 2014; 2:5862-5871. [DOI: 10.1039/c4tb00603h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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81
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Poetz KL, Mohammed HS, Snyder BL, Liddil G, Samways DSK, Shipp DA. Photopolymerized Cross-Linked Thiol–Ene Polyanhydrides: Erosion, Release, and Toxicity Studies. Biomacromolecules 2014; 15:2573-82. [DOI: 10.1021/bm500420q] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Katie L. Poetz
- Department of Chemistry and Biomolecular
Science, ‡Department of Biology §Center for Advanced
Materials Processing Clarkson University, Potsdam, New York 13699-5810, United States
| | - Halimatu S. Mohammed
- Department of Chemistry and Biomolecular
Science, ‡Department of Biology §Center for Advanced
Materials Processing Clarkson University, Potsdam, New York 13699-5810, United States
| | - Brittany L. Snyder
- Department of Chemistry and Biomolecular
Science, ‡Department of Biology §Center for Advanced
Materials Processing Clarkson University, Potsdam, New York 13699-5810, United States
| | - Garrett Liddil
- Department of Chemistry and Biomolecular
Science, ‡Department of Biology §Center for Advanced
Materials Processing Clarkson University, Potsdam, New York 13699-5810, United States
| | - Damien S. K. Samways
- Department of Chemistry and Biomolecular
Science, ‡Department of Biology §Center for Advanced
Materials Processing Clarkson University, Potsdam, New York 13699-5810, United States
| | - Devon A. Shipp
- Department of Chemistry and Biomolecular
Science, ‡Department of Biology §Center for Advanced
Materials Processing Clarkson University, Potsdam, New York 13699-5810, United States
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82
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Wang T, Zhang Z, Gao J, Yin J, Sun R, Bao F, Ma R. Synthesis of Graphene Oxide Modified Poly(sebacic anhydride) Hybrid Materials for Controlled Release Applications. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.869745] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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83
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Natarajan J, Rattan S, Singh U, Madras G, Chatterjee K. Polyanhydrides of Castor Oil–Sebacic Acid for Controlled Release Applications. Ind Eng Chem Res 2014. [DOI: 10.1021/ie500679u] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Janeni Natarajan
- Centre for Nano Science and Engineering, ‡Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Shruti Rattan
- Centre for Nano Science and Engineering, ‡Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Utkarsh Singh
- Centre for Nano Science and Engineering, ‡Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Giridhar Madras
- Centre for Nano Science and Engineering, ‡Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Kaushik Chatterjee
- Centre for Nano Science and Engineering, ‡Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
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84
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Carbone-Howell AL, Stebbins ND, Uhrich KE. Poly(anhydride-esters) comprised exclusively of naturally occurring antimicrobials and EDTA: antioxidant and antibacterial activities. Biomacromolecules 2014; 15:1889-95. [PMID: 24702678 PMCID: PMC4020595 DOI: 10.1021/bm500303a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
Carvacrol, thymol, and eugenol are
naturally occurring phenolic
compounds known to possess antimicrobial activity against a range
of bacteria, as well as antioxidant activity. Biodegradable poly(anhydride-esters)
composed of an ethylenediaminetetraacetic acid (EDTA) backbone and
antimicrobial pendant groups (i.e., carvacrol, thymol, or eugenol)
were synthesized via solution polymerization. The resulting polymers
were characterized to confirm their chemical composition and understand
their thermal properties and molecular weight. In vitro release studies
demonstrated that polymer hydrolytic degradation was complete after
16 days, resulting in the release of free antimicrobials and EDTA.
Antioxidant and antibacterial assays determined that polymer release
media exhibited bioactivity similar to that of free compound, demonstrating
that polymer incorporation and subsequent release had no effect on
activity. These polymers completely degrade into components that are
biologically relevant and have the capability to promote preservation
of consumer products in the food and personal care industries via
antimicrobial and antioxidant pathways.
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85
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Affiliation(s)
- Sindhu Doppalapudi
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research (NIPER); Hyderabad 500037 India
| | - Anjali Jain
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research (NIPER); Hyderabad 500037 India
| | - Wahid Khan
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research (NIPER); Hyderabad 500037 India
- School of Pharmacy-Faculty of Medicine; The Hebrew University of Jerusalem; Jerusalem 91120 Israel
| | - Abraham J. Domb
- School of Pharmacy-Faculty of Medicine; The Hebrew University of Jerusalem; Jerusalem 91120 Israel
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86
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Pavelkova A, Kucharczyk P, Zednik J, Sedlarik V. Synthesis of poly(sebacic anhydride): effect of various catalysts on structure and thermal properties. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0426-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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87
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Sundararaj SC, Thomas MV, Dziubla TD, Puleo DA. Bioerodible system for sequential release of multiple drugs. Acta Biomater 2014; 10:115-25. [PMID: 24096151 DOI: 10.1016/j.actbio.2013.09.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 09/24/2013] [Accepted: 09/24/2013] [Indexed: 12/22/2022]
Abstract
Because many complex physiological processes are controlled by multiple biomolecules, comprehensive treatment of certain disease conditions may be more effectively achieved by administration of more than one type of drug. Thus, the objective of the present research was to develop a multilayered, polymer-based system for sequential delivery of multiple drugs. The polymers used were cellulose acetate phthalate (CAP) complexed with Pluronic F-127 (P). After evaluating morphology of the resulting CAPP system, in vitro release of small molecule drugs and a model protein was studied from both single and multilayered devices. Drug release from single-layered CAPP films followed zero-order kinetics related to surface erosion of the association polymer. Release studies from multilayered CAPP devices showed the possibility of achieving intermittent release of one type of drug as well as sequential release of more than one type of drug. Mathematical modeling accurately predicted the release profiles for both single layer and multilayered devices. The present CAPP association polymer-based multilayer devices can be used for localized, sequential delivery of multiple drugs for the possible treatment of complex disease conditions, and perhaps for tissue engineering applications, that require delivery of more than one type of biomolecule.
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Affiliation(s)
- Sharath C Sundararaj
- Department of Biomedical Engineering, University of Kentucky, Lexington, KY 40506-0070, USA
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88
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Kwon S, Singh RK, Perez RA, Abou Neel EA, Kim HW, Chrzanowski W. Silica-based mesoporous nanoparticles for controlled drug delivery. J Tissue Eng 2013; 4:2041731413503357. [PMID: 24020012 PMCID: PMC3764983 DOI: 10.1177/2041731413503357] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Drug molecules with lack of specificity and solubility lead patients to take high doses of the drug to achieve sufficient therapeutic effects. This is a leading cause of adverse drug reactions, particularly for drugs with narrow therapeutic window or cytotoxic chemotherapeutics. To address these problems, there are various functional biocompatible drug carriers available in the market, which can deliver therapeutic agents to the target site in a controlled manner. Among the carriers developed thus far, mesoporous materials emerged as a promising candidate that can deliver a variety of drug molecules in a controllable and sustainable manner. In particular, mesoporous silica nanoparticles are widely used as a delivery reagent because silica possesses favourable chemical properties, thermal stability and biocompatibility. Currently, sol-gel-derived mesoporous silica nanoparticles in soft conditions are of main interest due to simplicity in production and modification and the capacity to maintain function of bioactive agents. The unique mesoporous structure of silica facilitates effective loading of drugs and their subsequent controlled release. The properties of mesopores, including pore size and porosity as well as the surface properties, can be altered depending on additives used to fabricate mesoporous silica nanoparticles. Active surface enables functionalisation to modify surface properties and link therapeutic molecules. The tuneable mesopore structure and modifiable surface of mesoporous silica nanoparticle allow incorporation of various classes of drug molecules and controlled delivery to the target sites. This review aims to present the state of knowledge of currently available drug delivery system and identify properties of an ideal drug carrier for specific application, focusing on mesoporous silica nanoparticles.
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Affiliation(s)
- Sooyeon Kwon
- Faculty of Pharmacy, The University of Sydney, Sydney, NSW, Australia
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89
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Joshi VB, Geary SM, Salem AK. Biodegradable particles as vaccine antigen delivery systems for stimulating cellular immune responses. Hum Vaccin Immunother 2013; 9:2584-90. [PMID: 23978910 DOI: 10.4161/hv.26136] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
There is a need for both new and improved vaccination formulations for a range of diseases for which current vaccines are either inadequate or non-existent. Biodegradable polymer-based vaccines fulfill many of the desired properties in achieving effective long-term protection in a manner that is safe, economical, and potentially more practicable on a global scale. Here we discuss some of the work performed with micro/nanoparticles made from either synthetic (poly[lactic-co-glycolic acid] [PLGA] and polyanhydrides) or natural (chitosan) biodegradable polymers. Our attention is focused on, but not limited to, the generation of antitumor immunity where we stress the importance of particle size and co-delivery of antigen and adjuvant.
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Affiliation(s)
- Vijaya B Joshi
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, IA USA
| | - Sean M Geary
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, IA USA
| | - Aliasger K Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, IA USA
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90
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Critical assessment of implantable drug delivery devices in glaucoma management. JOURNAL OF DRUG DELIVERY 2013; 2013:895013. [PMID: 24066234 PMCID: PMC3770064 DOI: 10.1155/2013/895013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 07/26/2013] [Indexed: 12/21/2022]
Abstract
Glaucoma is a group of heterogeneous disorders involving progressive optic neuropathy that can culminate into visual impairment and irreversible blindness. Effective therapeutic interventions must address underlying vulnerability of retinal ganglion cells (RGCs) to degeneration in conjunction with correcting other associated risk factors (such as elevated intraocular pressure). However, realization of therapeutic outcomes is heavily dependent on suitable delivery system that can overcome myriads of anatomical and physiological barriers to intraocular drug delivery. Development of clinically viable sustained release systems in glaucoma is a widely recognized unmet need. In this regard, implantable delivery systems may relieve the burden of chronic drug administration while potentially ensuring high intraocular drug bioavailability. Presently there are no FDA-approved implantable drug delivery devices for glaucoma even though there are several ongoing clinical studies. The paper critically assessed the prospects of polymeric implantable delivery systems in glaucoma while identifying factors that can dictate (a) patient tolerability and acceptance, (b) drug stability and drug release profiles, (c) therapeutic efficacy, and (d) toxicity and biocompatibility. The information gathered could be useful in future research and development efforts on implantable delivery systems in glaucoma.
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91
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Ouimet MA, Stebbins ND, Uhrich KE. Biodegradable coumaric acid-based poly(anhydride-ester) synthesis and subsequent controlled release. Macromol Rapid Commun 2013; 34:1231-6. [PMID: 23836606 DOI: 10.1002/marc.201300323] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 05/24/2013] [Indexed: 12/16/2022]
Abstract
To overcome drug delivery issues associated with its short half-life in vivo, p-coumaric acid (pCA), a naturally occurring bioactive, has been chemically incorporated into a poly(anhydride-ester) backbone through solution polymerization. Nuclear magnetic resonance and Fourier transform infrared spectroscopies indicated that pCA was successfully incorporated without noticeable alterations in structural integrity. The polymer's weight-average molecular weight and thermal properties were determined, exhibiting a molecular weight of over 26 000 Da and a glass transition temperature of 57 °C. In addition, in vitro hydrolytic release studies demonstrated pCA release over 30 d with maintained antioxidant activity, demonstrating the polymer's potential as a controlled release system.
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Affiliation(s)
- Michelle A Ouimet
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Rd., Piscataway, NJ, 08854, USA
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92
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Novel 4-arm poly(ethylene glycol)-block-poly(anhydride-esters) amphiphilic copolymer micelles loading curcumin: preparation, characterization, and in vitro evaluation. BIOMED RESEARCH INTERNATIONAL 2013; 2013:507103. [PMID: 23936812 PMCID: PMC3722784 DOI: 10.1155/2013/507103] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 06/02/2013] [Indexed: 11/18/2022]
Abstract
A novel 4-arm poly(ethylene glycol)-block-poly(anhydride-esters) amphiphilic copolymer (4-arm PEG-b-PAE) was synthesized by esterization of 4-arm poly(ethylene glycol) and poly(anhydride-esters) which was obtained by melt polycondensation of α -, ω -acetic anhydride terminated poly(L-lactic acid). The obtained 4-arm PEG-b-PAE was characterized by (1)H-NMR and gel permeation chromatography. The critical micelle concentration of 4-arm PEG-b-PAE was 2.38 μg/mL. The curcumin-loaded 4-arm PEG-b-PAE micelles were prepared by a solid dispersion method and the drug loading content and encapsulation efficiency of the micelles were 7.0% and 85.2%, respectively. The curcumin-loaded micelles were spherical with a hydrodynamic diameter of 151.9 nm. Curcumin was encapsulated within 4-arm PEG-b-PAE micelles amorphously and released from the micelles, faster in pH 5.0 than pH 7.4, presenting one biphasic drug release pattern with rapid release at the initial stage and slow release later. The hemolysis rate of the curcumin-loaded 4-arm PEG-b-PAE micelles was 3.18%, which was below 5%. The IC50 value of the curcumin-loaded micelles against Hela cells was 10.21 μg/mL, lower than the one of free curcumin (25.90 μg/mL). The cellular uptake of the curcumin-loaded micelles in Hela cell increased in a time-dependent manner. The curcumin-loaded micelles could induce G2/M phase cell cycle arrest and apoptosis of Hela cells.
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93
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94
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Wada K, Yu W, Elazizi M, Barakat S, Ouimet MA, Rosario-Meléndez R, Fiorellini JP, Graves DT, Uhrich KE. Locally delivered salicylic acid from a poly(anhydride-ester): impact on diabetic bone regeneration. J Control Release 2013; 171:33-7. [PMID: 23827476 DOI: 10.1016/j.jconrel.2013.06.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 06/20/2013] [Indexed: 02/06/2023]
Abstract
Diabetes mellitus (DM) involves metabolic changes that can impair bone repair, including a prolonged inflammatory response. A salicylic acid-based poly(anhydride-ester) (SA-PAE) provides controlled and sustained release of salicylic acid (SA) that locally resolves inflammation. This study investigates the effect of polymer-controlled SA release on bone regeneration in diabetic rats where enhanced inflammation is expected. Fifty-six Sprague-Dawley rats were randomly assigned to two groups: diabetic group induced by streptozotocin (STZ) injection or normoglycemic controls injected with citrate buffer alone. Three weeks after hyperglycemia development or vehicle injection, 5mm critical sized defects were created at the rat mandibular angle and treated with SA-PAE/bone graft mixture or bone graft alone. Rats were euthanized 4 and 12weeks after surgery, then bone fill percentage in the defect region was assessed by micro-computed tomography (CT) and histomorphometry. It was observed that bone fill increased significantly at 4 and 12weeks in SA-PAE/bone graft-treated diabetic rats compared to diabetic rats receiving bone graft alone. Accelerated bone formation in normoglycemic rats caused by SA-PAE/bone graft treatment was observed at 4weeks but not at 12weeks. This study shows that treatment with SA-PAE enhances bone regeneration in diabetic rats and accelerates bone regeneration in normoglycemic animals.
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Affiliation(s)
- Keisuke Wada
- Department of Periodontics, University of Pennsylvania School of Dental Medicine, 240 South 40th Street, Philadelphia 19104, USA
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95
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Aqil F, Munagala R, Jeyabalan J, Vadhanam MV. Bioavailability of phytochemicals and its enhancement by drug delivery systems. Cancer Lett 2013; 334:133-41. [PMID: 23435377 PMCID: PMC3815990 DOI: 10.1016/j.canlet.2013.02.032] [Citation(s) in RCA: 184] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 02/07/2013] [Accepted: 02/08/2013] [Indexed: 12/12/2022]
Abstract
Issues of poor oral bioavailability of cancer chemopreventives have hindered progress in cancer prevention. Novel delivery systems that modulate the pharmacokinetics of existing drugs, such as nanoparticles, cyclodextrins, niosomes, liposomes and implants, could be used to enhance the delivery of chemopreventive agents to target sites. The development of new approaches in prevention and treatment of cancer could encompass new delivery systems for approved and newly investigated compounds. In this review, we discuss some of the delivery approaches that have already made an impact by either delivering a drug to target tissue or increasing its bioavailability by many fold.
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Affiliation(s)
- Farrukh Aqil
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, United States
| | - Radha Munagala
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, United States
| | - Jeyaprakash Jeyabalan
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, United States
| | - Manicka V Vadhanam
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, United States.
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96
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Ozbolat IT, Marchany M, Gardella JA, Koc B. Computer-Aided 4D Modeling of Hydrolytic Degradation in Micropatterned Bioresorbable Membranes. J Med Device 2013. [DOI: 10.1115/1.4024158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Real-time degradation studies of bioresorbable polymers can take weeks, months, and even years to conduct. For this reason, developing and validating mathematical models that describe and predict degradation can provide a means to accelerate the development of materials and devices for controlled drug release. This study aims to develop and experimentally validate a computer-aided model that simulates the hydrolytic degradation kinetics of bioresorbable polymeric micropatterned membranes for tissue engineering applications. Specifically, the model applies to circumstances that are conducive for the polymer to undergo surface erosion. The developed model provides a simulation tool enabling the prediction and visualization of the dynamic geometry of the degrading membrane. In order to validate the model, micropatterned polymeric membranes were hydrolytically degraded in vitro and the morphological changes were analyzed using optical microscopy. The model is then extended to predict spatiotemporal degradation kinetics of variational micropatterned architectures.
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Affiliation(s)
- Ibrahim T. Ozbolat
- Department of Mechanical and Industrial Engineering, Biomanufacturing Laboratory, Center for Computer-Aided Design, The University of Iowa, Iowa, IA 52242 e-mail:
| | | | - Joseph A. Gardella
- Department of Chemistry, University at Buffalo, 359 Natural Sciences Complex, Buffalo, NY 14260
| | - Bahattin Koc
- Faculty of Engineering and Natural Sciences, Sabanci University, FENS G013 Tuzla, Istanbul 34956, Turkey
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97
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Vaisman B, Ickowicz DE, Abtew E, Haim-Zada M, Shikanov A, Domb AJ. In Vivo Degradation and Elimination of Injectable Ricinoleic Acid-Based Poly(ester-anhydride). Biomacromolecules 2013; 14:1465-73. [DOI: 10.1021/bm4001475] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Boris Vaisman
- Institute
for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, 91120 Jerusalem, Israel
| | - Diana E. Ickowicz
- Institute
for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, 91120 Jerusalem, Israel
| | - Ester Abtew
- Institute
for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, 91120 Jerusalem, Israel
| | - Moran Haim-Zada
- Institute
for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, 91120 Jerusalem, Israel
| | - Ariella Shikanov
- Institute
for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, 91120 Jerusalem, Israel
| | - Abraham J. Domb
- Institute
for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, 91120 Jerusalem, Israel
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98
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Abstract
Bioresponsive hydrogels are emerging with technological significance in targeted drug delivery, biosensors, and regenerative medicine. Their ability to respond to specific biologically derived stimuli creates a design challenge in effectively linking the conferred biospecificity with an engineered response tailored to the needs of a particular application. Moreover, the fundamental phenomena governing the response must support an appropriate dynamic range, limit of detection, and the potential for feedback control. The design of these systems is inherently complicated due to the high interdependency of the governing phenomena that guide sensing, transduction, and actuation of the hydrogel. Future advancements in bioresponsive hydrogels will out of necessity contain control loops similar to synthetic metabolic pathways. The use of these materials will continue to expand as they become coupled and integrated with new technologies.
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99
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Silva JM, Videira M, Gaspar R, Préat V, Florindo HF. Immune system targeting by biodegradable nanoparticles for cancer vaccines. J Control Release 2013; 168:179-99. [PMID: 23524187 DOI: 10.1016/j.jconrel.2013.03.010] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Revised: 03/11/2013] [Accepted: 03/14/2013] [Indexed: 01/08/2023]
Abstract
The concept of therapeutic cancer vaccines is based on the activation of the immune system against tumor cells after the presentation of tumor antigens. Nanoparticles (NPs) have shown great potential as delivery systems for cancer vaccines as they potentiate the co-delivery of tumor-associated antigens and adjuvants to dendritic cells (DCs), insuring effective activation of the immune system against tumor cells. In this review, the immunological mechanisms behind cancer vaccines, including the role of DCs in the stimulation of T lymphocytes and the use of Toll-like receptor (TLR) ligands as adjuvants will be discussed. An overview of each of the three essential components of a therapeutic cancer vaccine - antigen, adjuvant and delivery system - will be provided with special emphasis on the potential of particulate delivery systems for cancer vaccines, in particular those made of biodegradable aliphatic polyesters, such as poly(lactic-co-glycolic acid) (PLGA) and poly-ε-caprolactone (PCL). Some of the factors that can influence NP uptake by DCs, including size, surface charge, surface functionalization and route of administration, will also be considered.
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Affiliation(s)
- Joana M Silva
- iMed.UL, Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, 1649-003 Lisbon, Portugal
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100
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Maisonneuve L, Lebarbé T, Grau E, Cramail H. Structure–properties relationship of fatty acid-based thermoplastics as synthetic polymer mimics. Polym Chem 2013. [DOI: 10.1039/c3py00791j] [Citation(s) in RCA: 173] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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