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Casella G, Carlotto S, Lanero F, Mozzon M, Sgarbossa P, Bertani R. Cyclo- and Polyphosphazenes for Biomedical Applications. Molecules 2022; 27:8117. [PMID: 36500209 PMCID: PMC9736570 DOI: 10.3390/molecules27238117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/15/2022] [Accepted: 11/17/2022] [Indexed: 11/23/2022] Open
Abstract
Cyclic and polyphosphazenes are extremely interesting and versatile substrates characterized by the presence of -P=N- repeating units. The chlorine atoms on the P atoms in the starting materials can be easily substituted with a variety of organic substituents, thus giving rise to a huge number of new materials for industrial applications. Their properties can be designed considering the number of repetitive units and the nature of the substituent groups, opening up to a number of peculiar properties, including the ability to give rise to supramolecular arrangements. We focused our attention on the extensive scientific literature concerning their biomedical applications: as antimicrobial agents in drug delivery, as immunoadjuvants in tissue engineering, in innovative anticancer therapies, and treatments for cardiovascular diseases. The promising perspectives for their biomedical use rise from the opportunity to combine the benefits of the inorganic backbone and the wide variety of organic side groups that can lead to the formation of nanoparticles, polymersomes, or scaffolds for cell proliferation. In this review, some aspects of the preparation of phosphazene-based systems and their characterization, together with some of the most relevant chemical strategies to obtain biomaterials, have been described.
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Affiliation(s)
- Girolamo Casella
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, Via Archirafi 22, 90123 Palermo, Italy
| | - Silvia Carlotto
- Department of Chemical Sciences (DiSC), University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemical Sciences (DiSC), University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
| | - Francesco Lanero
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
| | - Mirto Mozzon
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
| | - Paolo Sgarbossa
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
| | - Roberta Bertani
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
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2
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Chen F, Teniola OR, Laurencin CT. Biodegradable Polyphosphazenes for Regenerative Engineering. JOURNAL OF MATERIALS RESEARCH 2022; 37:1417-1428. [PMID: 36203785 PMCID: PMC9531846 DOI: 10.1557/s43578-022-00551-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/29/2022] [Indexed: 05/05/2023]
Abstract
Regenerative engineering is a field that seeks to regenerate complex tissues and biological systems, rather than simply restore and repair individual tissues or organs. Since the first introduction of regenerative engineering in 2012, numerous research has been devoted to the development of this field. Biodegradable polymers such as polyphosphazenes in particular have drawn significant interest as regenerative engineering materials for their synthetic flexibility in designing into materials with a wide range of mechanical properties, degradation rates, and chemical functionality. These polyphosphazenes can go through complete hydrolytic degradation and provide harmlessly and pH neutral buffering degradation products such as phosphates and ammonia, which is crucial for reducing inflammation in vivo. Here, we discuss the current accomplishments of polyphosphazene, different methods for synthesizing them, and their applications in tissue regeneration such as bones, nerves, and elastic tissues.
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Affiliation(s)
- Feiyang Chen
- Connecticut Convergence Institute for Translation in Regenerative Engineering, UConn Health, Farmington, Connecticut
| | - O R Teniola
- Connecticut Convergence Institute for Translation in Regenerative Engineering, UConn Health, Farmington, Connecticut
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut
| | - Cato T Laurencin
- Connecticut Convergence Institute for Translation in Regenerative Engineering, UConn Health, Farmington, Connecticut
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, UConn Health, Farmington, Connecticut
- Connecticut Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut
- Connecticut Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut
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3
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Cherian AM, Nair SV, Maniyal V, Menon D. Surface engineering at the nanoscale: A way forward to improve coronary stent efficacy. APL Bioeng 2021; 5:021508. [PMID: 34104846 PMCID: PMC8172248 DOI: 10.1063/5.0037298] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 04/26/2021] [Indexed: 12/12/2022] Open
Abstract
Coronary in-stent restenosis and late stent thrombosis are the two major inadequacies of vascular stents that limit its long-term efficacy. Although restenosis has been successfully inhibited through the use of the current clinical drug-eluting stent which releases antiproliferative drugs, problems of late-stent thrombosis remain a concern due to polymer hypersensitivity and delayed re-endothelialization. Thus, the field of coronary stenting demands devices having enhanced compatibility and effectiveness to endothelial cells. Nanotechnology allows for efficient modulation of surface roughness, chemistry, feature size, and drug/biologics loading, to attain the desired biological response. Hence, surface topographical modification at the nanoscale is a plausible strategy to improve stent performance by utilizing novel design schemes that incorporate nanofeatures via the use of nanostructures, particles, or fibers, with or without the use of drugs/biologics. The main intent of this review is to deliberate on the impact of nanotechnology approaches for stent design and development and the recent advancements in this field on vascular stent performance.
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Affiliation(s)
- Aleena Mary Cherian
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita
Vishwa Vidyapeetham, Ponekkara P.O. Cochin 682041, Kerala,
India
| | - Shantikumar V. Nair
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita
Vishwa Vidyapeetham, Ponekkara P.O. Cochin 682041, Kerala,
India
| | - Vijayakumar Maniyal
- Department of Cardiology, Amrita Institute of Medical Science
and Research Centre, Amrita Vishwa Vidyapeetham, Ponekkara P.O. Cochin
682041, Kerala, India
| | - Deepthy Menon
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita
Vishwa Vidyapeetham, Ponekkara P.O. Cochin 682041, Kerala,
India
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4
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Onder A, Ozay H. Synthesis and characterization of biodegradable and antioxidant phosphazene-tannic acid nanospheres and their utilization as drug carrier material. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 120:111723. [PMID: 33545874 DOI: 10.1016/j.msec.2020.111723] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 12/21/2022]
Abstract
In this study, hexachlorocyclotriphosphazene (HCCP) and tannic acid (TA) were used at different stoichiometric ratios to synthesize cyclomatrix-type polymeric materials with different surface features and dimensions. Using different reactive ratios, the structure and surface functional groups of the synthesized polymeric particles were explained using Fourier-Transform Infrared Spectroscopic (FTIR), Scanning Electron Microscope (SEM), Energy-dispersive X-ray spectroscopy (EDX), X-ray Photoelectron Spectroscopy (XPS) and Thermogravimetric (TG) analysis techniques. With morphologically fully spherical structure and mean 234.82 ± 49.37 nm dimensions, Phz-TA (4:1) nanospheres were researched for in vitro biodegradability, antioxidant features, and usability as a drug release system. In vitro biodegradability of Phz-TA (4:1) nanospheres was investigated at pH = 7.0 and pH = 1.2. Determined to degrade in 8-10 h at these pH values, nanospheres were used for releasing of Rhodamine 6G as a model drug. Due to the rich phenolic structure of the contained tannic acid units, nanospheres were determined to simultaneously have antioxidant features. Thus, this study determined that Phz-TA nanospheres with in vitro biodegradability and antioxidant features are promising polymeric materials for use as a potential drug-carrier in the future.
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Affiliation(s)
- Alper Onder
- School of Graduate Studies, Department of Chemistry, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Hava Ozay
- Laboratory of Inorganic Materials, Department of Chemistry, Faculty of Science and Arts, Çanakkale Onsekiz Mart University, Çanakkale, Turkey.
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P V M, Bhatt A, P R. Glycine integrated zwitterionic hemocompatible electrospun poly(ethylene-co-vinyl alcohol) membranes for leukodepletion. Biomed Phys Eng Express 2020; 6:055019. [DOI: 10.1088/2057-1976/abac8f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Synthesis, spectroscopic, thermal properties, in vitro release, and stability studies of ibuprofen-loaded microspheres cross-linked with hexachlorocyclotriphosphazene/octachlorocyclotetraphosphazene. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03422-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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7
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Akbari Javar R, Bin Noordin MI, Khoobi M, Ghaedi A. Fatty Acid Based Polyamide for Application in Drug Delivery System: Synthesis, Characterization, Drug Loading and In Vitro Drug Release Study. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01512-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mehmood S, Wang L, Yu H, Haq F, Fahad S, Bilal‐ul‐Amin, Alim Uddin M, Haroon M. Recent Progress on the Preparation of Cyclomatrix‐Polyphosphazene Based Micro/Nanospheres and Their Application for Drug Release. ChemistrySelect 2020. [DOI: 10.1002/slct.201904844] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Sahid Mehmood
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P.R. China
| | - Li Wang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P.R. China
| | - Haojie Yu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P.R. China
| | - Fazal Haq
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P.R. China
| | - Shah Fahad
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P.R. China
| | - Bilal‐ul‐Amin
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P.R. China
| | - Md Alim Uddin
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P.R. China
| | - Muhammad Haroon
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P.R. China
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Kim J, Silva AB, Hsu JC, Maidment PSN, Shapira N, Noël PB, Cormode DP. Radioprotective garment-inspired biodegradable polymetal nanoparticles for enhanced CT contrast production. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2020; 32:381-391. [PMID: 33005071 PMCID: PMC7523649 DOI: 10.1021/acs.chemmater.9b03931] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Numerous formulations of nanoparticle-based X-ray computed tomography (CT) contrast agents made of heavy metal elements are under investigation for their ability to provide improved CT imaging. Thus far, most experimental nanoparticle-based CT contrast agents have been developed with atoms of a single element. However, inspired by the composites formed from multiple elements used in radioprotective garments, we hypothesized that contrast agents made of several elements whose K-edge energies are spaced out in the high photon flux region could achieve high, broadband X-ray attenuation across the energies used in X-ray source spectra. Herein, we synthesized sub-5 nm core inorganic nanoparticles containing gold, tantalum, and cerium, and encapsulated them in polymeric nanoparticles to form polymetal nanoparticles (PMNP). We found that PMNP with multiple payload elements generate higher and more stable CT contrast than contrast agents made from a single contrast generating material, demonstrating the potential benefits of incorporating multiple suitable elements as CT contrast payloads.
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Affiliation(s)
- Johoon Kim
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
- Department of Bioengineering, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Alexander B. Silva
- Department of Bioengineering, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Jessica C. Hsu
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
- Department of Bioengineering, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Portia S. N. Maidment
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Nadav Shapira
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Peter B. Noël
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - David P. Cormode
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
- Department of Bioengineering, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
- Department of Medicine, Division of Cardiovascular Medicine, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
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10
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Brown JL, Laurencin CT. Bone Tissue Engineering. Biomater Sci 2020. [DOI: 10.1016/b978-0-12-816137-1.00085-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Ogueri KS, Allcock HR, Laurencin CT. Generational Biodegradable and Regenerative Polyphosphazene Polymers and their Blends with Poly (lactic-co-glycolic acid). Prog Polym Sci 2019; 98:101146. [PMID: 31551636 PMCID: PMC6758934 DOI: 10.1016/j.progpolymsci.2019.101146] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
New fields such as regenerative engineering have driven the design of advanced biomaterials with a wide range of properties. Regenerative engineering is a multidisciplinary approach that integrates the fields of advanced materials science and engineering, stem cell science, physics, developmental biology, and clinical translation for the regeneration of complex tissues. The complexity and demands of this innovative approach have motivated the synthesis of new polymeric materials that can be customized to meet application-specific needs. Polyphosphazene polymers represent this fundamental change and are gaining renewed interest as biomaterials due to their outstanding synthetic flexibility, neutral bioactivity (buffering degradation products), and tunable properties across the range. Polyphosphazenes are a unique class of polymers composed of an inorganic backbone with alternating phosphorus and nitrogen atoms. Each phosphorus atom bears two substituents, with a wide variety of side groups available for property optimization. Polyphosphazenes have been investigated as potential biomaterials for regenerative engineering. Polyphosphazenes for use in regenerative applications have evolved as a class to include different generations of degradable polymers. The first generation of polyphosphazenes for tissue regeneration entailed the use of hydrolytically active side groups such as imidazole, lactate, glycolate, glucosyl, or glyceryl groups. These side groups were selected based on their ability to sensitize the polymer backbone to hydrolysis, which allowed them to break down into non-toxic small molecules that could be metabolized or excreted. The second generation of degradable polyphosphazenes developed consisted of polymers with amino acid ester side groups. When blended with poly (lactic acid-co-glycolic acid) (PLGA), the feasibility of neutralizing acidic degradation products of PLGA was demonstrated. The blends formed were mostly partially miscible. The desire to improve miscibility led to the design of the third generation of degradable polyphosphazenes by incorporating dipeptide side groups which impart significant hydrogen bonding capability to the polymer for the formation of completely miscible polyphosphazene-PLGA blends. Blend system of the dipeptide-based polyphosphazene and PLGA exhibit a unique degradation behavior that allows the formation of interconnected porous structures upon degradation. These inherent pore-forming properties have distinguished degradable polyphosphazenes as a potentially important class of biomaterials for further study. The design considerations and strategies for the different generations of degradable polyphosphazenes and future directions are discussed.
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Affiliation(s)
- Kenneth S. Ogueri
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Harry R. Allcock
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Cato T. Laurencin
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA
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Ogueri KS, Jafari T, Escobar Ivirico JL, Laurencin CT. POLYMERIC BIOMATERIALS FOR SCAFFOLD-BASED BONE REGENERATIVE ENGINEERING. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2019; 5:128-154. [PMID: 31423461 PMCID: PMC6697158 DOI: 10.1007/s40883-018-0072-0] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 06/28/2018] [Indexed: 10/28/2022]
Abstract
Reconstruction of large bone defects resulting from trauma, neoplasm, or infection is a challenging problem in reconstructive surgery. The need for bone grafting has been increasing steadily partly because of our enhanced capability to salvage limbs after major bone loss. Engineered bone graft substitutes can have advantages such as lack of antigenicity, high availability, and varying properties depending on the applications chosen for use. These favorable attributes have contributed to the rise of scaffold-based polymeric tissue regeneration. Critical components in the scaffold-based polymeric regenerative engineering approach often include 1. The existence of biodegradable polymeric porous structures with properties selected to promote tissue regeneration and while providing appropriate mechanical support during tissue regeneration. 2. Cellular populations that can influence and enhance regeneration. 3. The use of growth and morphogenetic factors which can influence cellular migration, differentiation and tissue regeneration in vivo. Biodegradable polymers constitute an attractive class of biomaterials for the development of scaffolds due to their flexibility in chemistry and their ability to produce biocompatible degradation products. This paper presents an overview of polymeric scaffold-based bone tissue regeneration and reviews approaches as well as the particular roles of biodegradable polymers currently in use.
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Affiliation(s)
- Kenneth S. Ogueri
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Tahereh Jafari
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Jorge L. Escobar Ivirico
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Cato T. Laurencin
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA
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Metinoğlu Örüm S, Süzen Demircioğlu Y. One-pot synthesis and characterization of crosslinked polyphosphazene dopamine microspheres for controlled drug delivery applications. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1615838] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Simge Metinoğlu Örüm
- Faculty of Science and Art, Department of Chemistry, Mehmet Akif Ersoy University, Burdur, Turkey
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Khan RU, Wang L, Yu H, Zain-ul-Abdin, Akram M, Wu J, Haroon M, Ullah RS, Deng Z, Xia X. Recent progress in the synthesis of poly(organo)phosphazenes and their applications in tissue engineering and drug delivery. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4757] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Khalid Z, Ali S, Akram M. Review on polyphosphazenes-based materials for bone and skeleton tissue engineering. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1375495] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Zohra Khalid
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Shaukat Ali
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Akram
- Department of Materials Science and Engineering, South University of Science and Technology, Shenzhen, Guangdong, China
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Ogueri KS, Escobar Ivirico JL, Nair LS, Allcock HR, Laurencin CT. Biodegradable Polyphosphazene-Based Blends for Regenerative Engineering. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2017; 3:15-31. [PMID: 28596987 DOI: 10.1007/s40883-016-0022-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The occurrence of musculoskeletal tissue injury or disease and the subsequent functional impairment is at an alarming rate. It continues to be one of the most challenging problems in the human health care. Regenerative engineering offers a promising transdisciplinary strategy for tissues regeneration based on the convergence of tissue engineering, advanced materials science, stem cell science, developmental biology and clinical translation. Biomaterials are emerging as extracellular-mimicking matrices designed to provide instructive cues to control cell behavior and ultimately, be applied as therapies to regenerate damaged tissues. Biodegradable polymers constitute an attractive class of biomaterials for the development of scaffolds due to their flexibility in chemistry and the ability to be excreted or resorbed by the body. Herein, the focus will be on biodegradable polyphosphazene-based blend systems. The synthetic flexibility of polyphosphazene, combined with the unique inorganic backbone, has provided a springboard for more research and subsequent development of numerous novel materials that are capable of forming miscible blends with poly (lactide-co-glycolide) (PLAGA). Laurencin and co-workers has demonstrated the exploitation of the synthetic flexibility of Polyphosphazene that will allow the design of novel polymers, which can form miscible blends with PLAGA for biomedical applications. These novel blends, due to their well-tuned biodegradability, and mechanical and biological properties coupled with the buffering capacity of the degradation products, constitute ideal materials for regeneration of various musculoskeletal tissues. LAY SUMMARY Regenerative engineering aims to regenerate complex tissues to address the clinical challenge of organ damage. Tissue engineering has largely focused on the restoration and repair of individual tissues and organs, but over the past 25 years, scientific, engineering, and medical advances have led to the introduction of this new approach which involves the regeneration of complex tissues and biological systems such as a knee or a whole limb. While a number of excellent advanced biomaterials have been developed, the choice of biomaterials, however, has increased over the past years to include polymers that can be designed with a range of mechanical properties, degradation rates, and chemical functionality. The polyphosphazenes are one good example. Their chemical versatility and hydrogen bonding capability encourages blending with other biologically relevant polymers. The further development of Polyphosphazene-based blends will present a wide spectrum of advanced biomaterials that can be used as scaffolds for regenerative engineering and as well as other biomedical applications.
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Affiliation(s)
- Kenneth S Ogueri
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA.,Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA.,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Jorge L Escobar Ivirico
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA.,Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA.,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Lakshmi S Nair
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA.,Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA.,Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA.,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA.,Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Harry R Allcock
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Cato T Laurencin
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA.,Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA.,Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA.,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA.,Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA.,Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA
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Burova TV, Grinberg NV, Dubovik AS, Olenichenko EA, Orlov VN, Grinberg VY. Interpolyelectrolyte complexes of lysozyme with short poly[di(carboxylatophenoxy)phosphazene]. Binding energetics and protein conformational stability. POLYMER 2017. [DOI: 10.1016/j.polymer.2016.11.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kondiah PJ, Choonara YE, Kondiah PPD, Marimuthu T, Kumar P, du Toit LC, Pillay V. A Review of Injectable Polymeric Hydrogel Systems for Application in Bone Tissue Engineering. Molecules 2016; 21:E1580. [PMID: 27879635 PMCID: PMC6272998 DOI: 10.3390/molecules21111580] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 10/24/2016] [Accepted: 11/16/2016] [Indexed: 11/16/2022] Open
Abstract
Biodegradable, stimuli-responsive polymers are essential platforms in the field of drug delivery and injectable biomaterials for application of bone tissue engineering. Various thermo-responsive hydrogels display water-based homogenous properties to encapsulate, manipulate and transfer its contents to the surrounding tissue, in the least invasive manner. The success of bioengineered injectable tissue modified delivery systems depends significantly on their chemical, physical and biological properties. Irrespective of shape and defect geometry, injectable therapy has an unparalleled advantage in which intricate therapy sites can be effortlessly targeted with minimally invasive procedures. Using material testing, it was found that properties of stimuli-responsive hydrogel systems enhance cellular responses and cell distribution at any site prior to the transitional phase leading to gelation. The substantially hydrated nature allows significant simulation of the extracellular matrix (ECM), due to its similar structural properties. Significant current research strategies have been identified and reported to date by various institutions, with particular attention to thermo-responsive hydrogel delivery systems, and their pertinent focus for bone tissue engineering. Research on future perspective studies which have been proposed for evaluation, have also been reported in this review, directing considerable attention to the modification of delivering natural and synthetic polymers, to improve their biocompatibility and mechanical properties.
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Affiliation(s)
- Pariksha J Kondiah
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Pierre P D Kondiah
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Thashree Marimuthu
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Lisa C du Toit
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
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Sabbieti MG, Dubbini A, Laus F, Paggi E, Marchegiani A, Capitani M, Marchetti L, Dini F, Vermonden T, Di Martino P, Agas D, Censi R. In vivo biocompatibility of p(HPMAm-lac)-PEG hydrogels hybridized with hyaluronan. J Tissue Eng Regen Med 2016; 11:3056-3067. [PMID: 27778485 DOI: 10.1002/term.2207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/05/2016] [Accepted: 03/27/2016] [Indexed: 12/17/2022]
Abstract
The present study reports on the biocompatibility in vivo after intramuscular and subcutaneous administration in Balb/c mice of vinyl sulphone bearing p(HPMAm-lac1-2)-PEG-p(HPMAm-lac1-2)/thiolated hyaluronic acid hydrogels, designed as novel injectable biomaterials for potential application in the fields of tissue engineering and regenerative medicine. Ultrasonography, used as a method to study hydrogel gelation and residence time in vivo, showed that, upon injection, the biomaterial efficiently formed a hydrogel by simultaneous thermal gelation and Michael Addition cross-linking forming a viscoelastic spherical depot at the injection site. The residence time in vivo (20 days) was found to be shorter than that observed in vitro (32 days), indicating that the injected hydrogel was resorbed not only by chemical hydrolysis but also by cellular metabolism and/or enzymatic activity. Systemic biocompatibility was tested by analysing routine haematological parameters at different time-points (7, 14 and 21 days after administration) and histology of the main organs, including the haematopoietic system. No statistically significant difference between parameters of the saline-treated group and those of the hydrogel-treated group was found. Importantly, a time-dependent decrease of important pro-inflammatory cytokines (TREM1 (Triggering Receptor Expressed on Myeloid cells-1), tumour necrosis factor-α and interleukin-1β) in cultured bone marrow cells extracted from hydrogel treated mice was observed, possibly correlated to the anti-inflammatory effect of hyaluronic acid released in time as hydrogel degraded. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Maria Giovanna Sabbieti
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, (MC), Italy
| | | | - Fulvio Laus
- School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, (MC), Italy
| | - Emanuele Paggi
- School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, (MC), Italy
| | - Andrea Marchegiani
- School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, (MC), Italy
| | - Melania Capitani
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, (MC), Italy
| | - Luigi Marchetti
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, (MC), Italy
| | - Fabrizio Dini
- School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, (MC), Italy
| | - Tina Vermonden
- Utrecht Institute for Pharmaceutical Sciences, Department of Pharmaceutics, Utrecht University, Utrecht, The Netherlands
| | - Piera Di Martino
- School of Pharmacy, University of Camerino, Camerino, (MC), Italy
| | - Dimitrios Agas
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, (MC), Italy
| | - Roberta Censi
- School of Pharmacy, University of Camerino, Camerino, (MC), Italy
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20
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Cheheltani R, Ezzibdeh RM, Chhour P, Pulaparthi K, Kim J, Jurcova M, Hsu JC, Blundell C, Litt HI, Ferrari VA, Allcock HR, Sehgal CM, Cormode DP. Tunable, biodegradable gold nanoparticles as contrast agents for computed tomography and photoacoustic imaging. Biomaterials 2016; 102:87-97. [PMID: 27322961 PMCID: PMC4941627 DOI: 10.1016/j.biomaterials.2016.06.015] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 06/02/2016] [Accepted: 06/04/2016] [Indexed: 11/19/2022]
Abstract
Gold nanoparticles (AuNP) have been proposed for many applications in medicine. Although large AuNP (>5.5 nm) are desirable for their longer blood circulation and accumulation in diseased tissues, small AuNP (<5.5 nm) are required for excretion via the kidneys. We present a novel platform where small, excretable AuNP are encapsulated into biodegradable poly di(carboxylatophenoxy)phosphazene (PCPP) nanospheres. These larger nanoparticles (Au-PCPP) can perform their function as contrast agents, then subsequently break down into harmless byproducts and release the AuNP for swift excretion. Homogeneous Au-PCPP were synthesized using a microfluidic device. The size of the Au-PCPP can be controlled by the amount of polyethylene glycol-polylysine (PEG-PLL) block co-polymer in the formulation. Synthesis of Au-PCPP nanoparticles and encapsulation of AuNP in PCPP were evaluated using transmission electron microscopy and their biocompatibility and biodegradability confirmed in vitro. The Au-PCPP nanoparticles were found to produce strong computed tomography contrast. The UV-Vis absorption peak of Au-PCPP can be tuned into the near infrared region via inclusion of varying amounts of AuNP and controlling the nanoparticle size. In vitro and in vivo experiments demonstrated the potential of Au-PCPP as contrast agents for photoacoustic imaging. Therefore, Au-PCPP nanoparticles have high potency as contrast agents for two imaging modalities, as well as being biocompatible and biodegradable, and thus represent a platform with potential for translation into the clinic.
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Affiliation(s)
- Rabee Cheheltani
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States
| | - Rami M Ezzibdeh
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States
| | - Peter Chhour
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Kumidini Pulaparthi
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States
| | - Johoon Kim
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Martina Jurcova
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States
| | - Jessica C Hsu
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Cassidy Blundell
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Harold I Litt
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States; Division of Cardiovascular Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Victor A Ferrari
- Division of Cardiovascular Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Harry R Allcock
- Department of Chemistry, Pennsylvania State University, University Park, PA, United States
| | - Chandra M Sehgal
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States
| | - David P Cormode
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States; Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States; Division of Cardiovascular Medicine, University of Pennsylvania, Philadelphia, PA, United States.
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21
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22
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Synthetic Biopolymers. Synth Biol (Oxf) 2016. [DOI: 10.1007/978-3-319-22708-5_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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23
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Burova TV, Grinberg NV, Dubovik AS, Grinberg VY. Conformational stability of bovine serum albumin in complexes with poly[di(carboxylatophenoxy)phosphazene]. POLYMER SCIENCE SERIES A 2015. [DOI: 10.1134/s0965545x15060061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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24
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Modzelewski T, Hotham I, Allcock HR. Deposition of calcium hydroxyapatite on negatively charged polyphosphazene surfaces. J Appl Polym Sci 2015. [DOI: 10.1002/app.41741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tomasz Modzelewski
- Department of Chemistry; the Pennsylvania State University; University Park Pennsylvania 16802
| | - Ian Hotham
- Department of Chemistry; the Pennsylvania State University; University Park Pennsylvania 16802
| | - Harry R. Allcock
- Department of Chemistry; the Pennsylvania State University; University Park Pennsylvania 16802
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25
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Zhang Y, Ding J, Sun D, Sun H, Zhuang X, Chang F, Wang J, Chen X. Thermogel-mediated sustained drug delivery for in situ malignancy chemotherapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 49:262-268. [PMID: 25686948 DOI: 10.1016/j.msec.2015.01.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/12/2014] [Accepted: 01/06/2015] [Indexed: 12/17/2022]
Abstract
In the past few decades, the in situ sustained drug delivery platforms present fascinating potential in sentinel chemotherapy of various solid tumors. In this work, doxorubicin (DOX), a model antitumor drug, was loaded into the thermogel of poly(lactide-co-glycolide)-block-poly(ethylene glycol)-block-poly(lactide-co-glycolide). The moderate mechanical property of DOX-loaded hydrogel was confirmed by rheological test. In vitro degradation revealed the good biodegradability of thermogel. The DOX-loaded hydrogel exhibited the sustained release profiles up to 30days without and even with elastase. The improved in vivo tumor inhibition and reduced side-effects were observed in the DOX-incorporated hydrogel group compared with those in free DOX group. The excellent in vivo results were further confirmed by the histopathological evaluation or terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assay. The thermogel with great prospect may be used as an ideal controlled drug delivery platform for the designated and long-term antitumor chemotherapy.
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Affiliation(s)
- Yanbo Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; Department of Orthopedics, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
| | - Diankui Sun
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Hai Sun
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Xiuli Zhuang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Fei Chang
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun 130041, PR China.
| | - Jincheng Wang
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun 130041, PR China.
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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26
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Akram M, Wang L, Yu H, Amer WA, Khalid H, Abbasi NM, Chen Y, Zain-ul-Abdin, Saleem M, Tong R. Polyphophazenes as anti-cancer drug carriers: From synthesis to application. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2014.07.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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27
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Rothemund S, Aigner TB, Iturmendi A, Rigau M, Husár B, Hildner F, Oberbauer E, Prambauer M, Olawale G, Forstner R, Liska R, Schröder KR, Brüggemann O, Teasdale I. Degradable Glycine-Based Photo-Polymerizable Polyphosphazenes for Use as Scaffolds for Tissue Regeneration. Macromol Biosci 2014; 15:351-63. [DOI: 10.1002/mabi.201400390] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 09/29/2014] [Indexed: 02/01/2023]
Affiliation(s)
- Sandra Rothemund
- Institute of Polymer Chemistry; Johannes Kepler University Linz; Welser Straße 42 Leonding A-4060 Austria
| | - Tamara B. Aigner
- Institute of Polymer Chemistry; Johannes Kepler University Linz; Welser Straße 42 Leonding A-4060 Austria
- Transfercenter für Kunststofftechnik (TCKT) GmbH; Franz-Fritsch-Strasse 11 A-4600 Wels Austria
| | - Aitziber Iturmendi
- Institute of Polymer Chemistry; Johannes Kepler University Linz; Welser Straße 42 Leonding A-4060 Austria
- Transfercenter für Kunststofftechnik (TCKT) GmbH; Franz-Fritsch-Strasse 11 A-4600 Wels Austria
| | - Maria Rigau
- Red Cross Blood Transfusion Service of Upper Austria; Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Austrian Cluster for Tissue Regeneration; Krankenhausstraße 7 A-4017 Linz Austria
| | - Branislav Husár
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9/163 A-1060 Vienna Austria
| | - Florian Hildner
- Red Cross Blood Transfusion Service of Upper Austria; Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Austrian Cluster for Tissue Regeneration; Krankenhausstraße 7 A-4017 Linz Austria
| | - Eleni Oberbauer
- Red Cross Blood Transfusion Service of Upper Austria; Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Austrian Cluster for Tissue Regeneration; Krankenhausstraße 7 A-4017 Linz Austria
| | - Martina Prambauer
- Institute of Polymer Chemistry; Johannes Kepler University Linz; Welser Straße 42 Leonding A-4060 Austria
- Transfercenter für Kunststofftechnik (TCKT) GmbH; Franz-Fritsch-Strasse 11 A-4600 Wels Austria
| | - Gbenga Olawale
- BioMed-zet Life Science GmbH; Industriezeile 36 A-4020 Linz Austria
| | - Reinhard Forstner
- Transfercenter für Kunststofftechnik (TCKT) GmbH; Franz-Fritsch-Strasse 11 A-4600 Wels Austria
| | - Robert Liska
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9/163 A-1060 Vienna Austria
| | | | - Oliver Brüggemann
- Institute of Polymer Chemistry; Johannes Kepler University Linz; Welser Straße 42 Leonding A-4060 Austria
| | - Ian Teasdale
- Institute of Polymer Chemistry; Johannes Kepler University Linz; Welser Straße 42 Leonding A-4060 Austria
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28
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Chhour P, Gallo N, Cheheltani R, Williams D, Al-Zaki A, Paik T, Nichol JL, Tian Z, Naha PC, Witschey WR, Allcock HR, Murray CB, Tsourkas A, Cormode DP. Nanodisco balls: control over surface versus core loading of diagnostically active nanocrystals into polymer nanoparticles. ACS NANO 2014; 8:9143-53. [PMID: 25188401 PMCID: PMC4174093 DOI: 10.1021/nn502730q] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 09/04/2014] [Indexed: 05/16/2023]
Abstract
Nanoparticles of complex architectures can have unique properties. Self-assembly of spherical nanocrystals is a high yielding route to such systems. In this study, we report the self-assembly of a polymer and nanocrystals into aggregates, where the location of the nanocrystals can be controlled to be either at the surface or in the core. These nanospheres, when surface decorated with nanocrystals, resemble disco balls, thus the term nanodisco balls. We studied the mechanism of this surface loading phenomenon and found it to be Ca(2+) dependent. We also investigated whether excess phospholipids could prevent nanocrystal adherence. We found surface loading to occur with a variety of nanocrystal types including iron oxide nanoparticles, quantum dots, and nanophosphors, as well as sizes (10-30 nm) and shapes. Additionally, surface loading occurred over a range of polymer molecular weights (∼30-3000 kDa) and phospholipid carbon tail length. We also show that nanocrystals remain diagnostically active after loading onto the polymer nanospheres, i.e., providing contrast in the case of magnetic resonance imaging for iron oxide nanoparticles and fluorescence for quantum dots. Last, we demonstrated that a fluorescently labeled protein model drug can be delivered by surface loaded nanospheres. We present a platform for contrast media delivery, with the unusual feature that the payload can be controllably localized to the core or the surface.
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Affiliation(s)
- Peter Chhour
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Nicolas Gallo
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Rabee Cheheltani
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Dewight Williams
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Ajlan Al-Zaki
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Taejong Paik
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Jessica L. Nichol
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Zhicheng Tian
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Pratap C. Naha
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Walter R. Witschey
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Harry R. Allcock
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Christopher B. Murray
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Andrew Tsourkas
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - David P. Cormode
- Departments of Radiology, Bioengineering, Biochemistry and Biophysics, Cardiology, Chemistry, and Materials Science and Engineering, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
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29
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Wilfert S, Iturmendi A, Schoefberger W, Kryeziu K, Heffeter P, Berger W, Brüggemann O, Teasdale I. Water-Soluble, Biocompatible Polyphosphazenes with Controllable and pH-Promoted Degradation Behavior. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2014; 52:287-294. [PMID: 24729657 PMCID: PMC3980369 DOI: 10.1002/pola.27002] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 10/30/2013] [Indexed: 11/15/2022]
Abstract
The synthesis of a series of novel, water-soluble poly(organophosphazenes) prepared via living cationic polymerization is presented. The degradation profiles of the polyphosphazenes prepared are analyzed by GPC, 31P NMR spectroscopy, and UV-Vis spectroscopy in aqueous media and show tunable degradation rates ranging from days to months, adjusted by subtle changes to the chemical structure of the polyphosphazene. Furthermore, it is observed that these polymers demonstrate a pH-promoted hydrolytic degradation behavior, with a remarkably faster rate of degradation at lower pH values. These degradable, water soluble polymers with controlled molecular weights and structures could be of significant interest for use in aqueous biomedical applications, such as polymer therapeutics, in which biological clearance is a requirement and in this context cell viability tests are described which show the non-toxic nature of the polymers as well as their degradation intermediates and products.
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Affiliation(s)
- Sandra Wilfert
- Institute of Polymer Chemistry, Johannes Kepler University LinzWelser Street 42, 4060, Leonding, Austria
| | - Aitziber Iturmendi
- Institute of Polymer Chemistry, Johannes Kepler University LinzWelser Street 42, 4060, Leonding, Austria
| | - Wolfgang Schoefberger
- Institute of Organic Chemistry, Johannes Kepler University LinzAltenberger Street 69, 4040, Linz, Austria
- Faculty of Science, University of South BohemiaBranišovská 31, 370 05, České Budějovice, Czech Republic
| | - Kushtrim Kryeziu
- Institute of Cancer Research and Comprehensive Cancer Center of the Medical University of Vienna, Medical University of ViennaBorschkegasse 8a, 1090, Vienna, Austria
| | - Petra Heffeter
- Institute of Cancer Research and Comprehensive Cancer Center of the Medical University of Vienna, Medical University of ViennaBorschkegasse 8a, 1090, Vienna, Austria
- Research and Platform “Translational Cancer Therapy Research,”Vienna, Austria
| | - Walter Berger
- Institute of Cancer Research and Comprehensive Cancer Center of the Medical University of Vienna, Medical University of ViennaBorschkegasse 8a, 1090, Vienna, Austria
- Research and Platform “Translational Cancer Therapy Research,”Vienna, Austria
| | - Oliver Brüggemann
- Institute of Polymer Chemistry, Johannes Kepler University LinzWelser Street 42, 4060, Leonding, Austria
| | - Ian Teasdale
- Institute of Polymer Chemistry, Johannes Kepler University LinzWelser Street 42, 4060, Leonding, Austria
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30
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Morozowich NL, Lerach JO, Modzelewski T, Jackson L, Winograd N, Allcock HR. Characterization of hydroxyapatite deposition on biomimetic polyphosphazenes by time-of-flight secondary ion mass spectrometry (ToF-SIMS). RSC Adv 2014. [DOI: 10.1039/c3ra47205a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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31
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Fitzpatrick SD, Fitzpatrick LE, Thakur A, Mazumder MAJ, Sheardown H. Temperature-sensitive polymers for drug delivery. Expert Rev Med Devices 2013; 9:339-51. [PMID: 22905838 DOI: 10.1586/erd.12.24] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The ability to undergo rapid changes in response to subtle environmental cues make stimuli- responsive materials attractive candidates for minimally invasive, targeted and personalized drug delivery applications. This special report aims to highlight and provide a brief description of several of the significant natural and synthetic temperature-responsive materials that have clinical relevance for drug delivery applications. This report examines the advantages and disadvantages of natural versus synthetic materials and outlines various scaffold architectures that can be utilized with temperature-sensitive drug delivery materials. The authors provide a commentary on the current state of the field and provide their insight into future expectations for temperature-sensitive drug delivery, emphasizing the importance of the emergence of dual and multiresponsive systems capable of responding precisely to an expanding set of stimuli, thereby allowing the development of disease-specific drug delivery vehicles.
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Affiliation(s)
- Scott D Fitzpatrick
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
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32
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Page JM, Harmata AJ, Guelcher SA. Design and development of reactive injectable and settable polymeric biomaterials. J Biomed Mater Res A 2013; 101:3630-45. [DOI: 10.1002/jbm.a.34665] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 02/05/2013] [Accepted: 02/14/2013] [Indexed: 12/21/2022]
Affiliation(s)
- Jonathan M. Page
- Department of Chemical and Biomolecular Engineering; Vanderbilt University; Nashville Tennessee
- Center for Bone Biology; Department of Medicine; Vanderbilt University Medical Center; Nashville Tennessee
| | - Andrew J. Harmata
- Department of Chemical and Biomolecular Engineering; Vanderbilt University; Nashville Tennessee
- Center for Bone Biology; Department of Medicine; Vanderbilt University Medical Center; Nashville Tennessee
| | - Scott A. Guelcher
- Department of Chemical and Biomolecular Engineering; Vanderbilt University; Nashville Tennessee
- Center for Bone Biology; Department of Medicine; Vanderbilt University Medical Center; Nashville Tennessee
- Department of Biomedical Engineering; Vanderbilt University; Nashville Tennessee
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Brown JL, Kumbar SG, Laurencin CT. Bone Tissue Engineering. Biomater Sci 2013. [DOI: 10.1016/b978-0-08-087780-8.00113-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Morozowich NL, Modzelewski T, Allcock HR. Synthesis of Phosphonated Polyphosphazenes via Two Synthetic Routes. Macromolecules 2012. [DOI: 10.1021/ma301679k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicole L. Morozowich
- Department of Chemistry, the Pennsylvania State University, University Park, Pennsylvania 16802,
United States
| | - Tomasz Modzelewski
- Department of Chemistry, the Pennsylvania State University, University Park, Pennsylvania 16802,
United States
| | - Harry R. Allcock
- Department of Chemistry, the Pennsylvania State University, University Park, Pennsylvania 16802,
United States
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Kumbar SG, Toti US, Deng M, James R, Laurencin CT, Aravamudhan A, Harmon M, Ramos DM. Novel mechanically competent polysaccharide scaffolds for bone tissue engineering. Biomed Mater 2011; 6:065005. [DOI: 10.1088/1748-6041/6/6/065005] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Bi Y, Gong X, He F, Xu L, Chen L, Zeng X, Yu L. Polyphosphazenes containing lactic acid ester and methoxyethoxyethoxy side groups — Thermosensitive properties and, in vitro degradation, and biocompatibility. CAN J CHEM 2011. [DOI: 10.1139/v11-102] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The thermosensitive and hydrolytic properties and biocompatibility of polyphosphazenes containing lactic acid ester and methoxyethoxyethoxy as co-substitutents were investigated. Depending on the type of lactic acid ester, these polyphosphazenes exhibited lower critical solution temperatures (LCST) (from 33 to 52 °C), which were almost concentration-independent in the range of 1.5 to 15 wt% of the polymers in aqueous solution. The salt effect on the thermosensitivity of the polymers was studied by measuring their LCST in aqueous solutions containing various salts. Bu4NBr and KI showed salting-in effects among the tested six salts, but NH4Br, NaBr, NH4Cl, and NaCl showed salting-out effects. Hydrolysis studies showed the rate of polymer hydrolysis decreased in the order of basic > acidic > neutral solution. The polyphosphazene with bulkier and more hydrophobic ester groups was more stable in hydrolysis. The results of a cytotoxicity study using an MTT assay method with HepG2 cell and K562/VCR cell showed that these polyphosphazenes and their degradation products were biocompatible. The thermoresponsiveness and biocompatibility of these biodegradable polyphosphazenes may favor the polymers as potential stimuli-responsive materials in biomedical applications.
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Affiliation(s)
- Yunmei Bi
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, P.R. China
| | - Xiaoying Gong
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, P.R. China
| | - Feng He
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, P.R. China
| | - Li Xu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, P.R. China
| | - Lin Chen
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, P.R. China
| | - Xianghui Zeng
- School of Chemical Science and Technology, Yunnan University, Kunming 650031, P.R. China
| | - Li Yu
- College of Chemistry and Chemical Engineering, Chonqing College of Science and Technology, Chongqing 40042, P.R. China
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Burova TV, Grinberg NV, Tur DR, Papkov VS, Dubovik AS, Grinberg VY, Khokhlov AR. Polyplexes of poly(methylaminophosphazene): energetics of DNA melting. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11582-11590. [PMID: 21830752 DOI: 10.1021/la202321t] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The interaction of DNA with a synthetic biocompatible and biodegradable cationic polymer, poly(methylaminophosphazene) hydrochloride (PMAP·HCl), was investigated by high-sensitivity differential scanning calorimetry under conditions of strong and weak electrostatic interactions of the macroions. Thermodynamic parameters of the DNA double-helix melting were determined as a function of pH and the PMAP·HCl/DNA weight ratio. PMAP·HCL was shown to reveal two functions with respect to DNA: the polyelectrolyte function and the donor-acceptor one. The first function stabilizes the helical conformation of DNA, and the second one destabilizes it. The stabilizing effect of PMAP·HCl is of entropic origin, related to a displacement of mobile counterions from the DNA's nearest surroundings by the poly(methylaminophosphazene) charged groups. The donor-acceptor function of poly(methylaminophosphazene) dominates when its electrostatic interaction with DNA is either saturated (in the complex coacervate phase at high poly(methylaminophosphazene) concentrations) or completely suppressed (in a salt medium when the polycation carries a small charge). Under these conditions, poly(methylaminophosphazene) destabilizes DNA. It preferentially binds to the DNA coil form likely via the formation of multiple labile hydrogen bonds with the donor-acceptor groups of DNA.
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Affiliation(s)
- Tatiana V Burova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, 119991 Moscow, Russian Federation.
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Decollibus DP, Marin A, Andrianov AK. Effect of environmental factors on hydrolytic degradation of water-soluble polyphosphazene polyelectrolyte in aqueous solutions. Biomacromolecules 2010; 11:2033-8. [PMID: 20690712 DOI: 10.1021/bm100395u] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Degradation of a water-soluble polyphosphazene, poly[di(carboxylatophenoxy)phosphazene], disodium salt (PCPP) has been studied in aqueous solutions at elevated temperature. This synthetic polyelectrolyte is of interest as vaccine adjuvant and its degradability constitutes an important component of its safety and formulation stability profiles. The degradation process is manifested by a gradual reduction in the molecular weight of the polymer and cleavage of side groups, which is consistent with previously reported data on hydrolytical breakdown of water-soluble polyphosphazenes. The kinetics of hydrolytical degradation exhibits distinct pH dependence and the process is faster in solutions with lower pH. Remarkably, a number of hydrogen bond forming additives, such as polyethylene glycol and Tween displayed a dramatic accelerating effect on the degradation of PCPP, whereas inorganic salts, such as sodium chloride and potassium chloride, showed a trend for its retardation. The results can be potentially explained on the basis of acid promoted hydrolysis mechanism and macromolecular interactions in the system.
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Affiliation(s)
- Daniel P Decollibus
- Apogee Technology, Inc., 129 Morgan Drive, Norwood, Massachusetts 02062, USA
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Grinberg VY, Grinberg NV, Burova TV, Dubovik AS, Tur DR, Papkov VS. Phase separation in aqueous solutions of polyethylaminophosphazene hydrochloride during heating. POLYMER SCIENCE SERIES A 2010. [DOI: 10.1134/s0965545x10110167] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Deng M, Nair LS, Nukavarapu SP, Jiang T, Kanner WA, Li X, Kumbar SG, Weikel AL, Krogman NR, Allcock HR, Laurencin CT. Dipeptide-based polyphosphazene and polyester blends for bone tissue engineering. Biomaterials 2010; 31:4898-908. [PMID: 20334909 DOI: 10.1016/j.biomaterials.2010.02.058] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2010] [Accepted: 02/23/2010] [Indexed: 11/19/2022]
Abstract
Polyphosphazene-polyester blends are attractive materials for bone tissue engineering applications due to their controllable degradation pattern with non-toxic and neutral pH degradation products. In our ongoing quest for an ideal completely miscible polyphosphazene-polyester blend system, we report synthesis and characterization of a mixed-substituent biodegradable polyphosphazene poly[(glycine ethyl glycinato)(1)(phenyl phenoxy)(1)phosphazene] (PNGEG/PhPh) and its blends with a polyester. Two dipeptide-based blends namely 25:75 (Matrix1) and 50:50 (Matrix2) were produced at two different weight ratios of PNGEG/PhPh to poly(lactic acid-glycolic acid) (PLAGA). Blend miscibility was confirmed by differential scanning calorimetry, Fourier transform infrared spectroscopy, and scanning electron microscopy. Both blends resulted in higher tensile modulus and strength than the polyester. The blends showed a degradation rate in the order of Matrix2<Matrix1<PLAGA in phosphate buffered saline at 37 degrees C over 12 weeks. Significantly higher pH values of degradation media were observed for blends compared to PLAGA confirming the neutralization of PLAGA acidic degradation by polyphosphazene hydrolysis products. The blend components PLAGA and polyphosphazene exhibited a similar degradation pattern as characterized by the molecular weight loss. Furthermore, blends demonstrated significantly higher osteoblast growth rates compared to PLAGA while maintaining osteoblast phenotype over a 21-day culture. Both blends demonstrated improved biocompatibility in a rat subcutaneous implantation model compared to PLAGA over 12 weeks.
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Affiliation(s)
- Meng Deng
- Department of Orthopaedic Surgery, University of Connecticut, Farmington, CT 06030-3800, USA
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Hindenlang MD, Soudakov AA, Imler GH, Laurencin CT, Nair LS, Allcock HR. Iodine-containing radio-opaque polyphosphazenes. Polym Chem 2010. [DOI: 10.1039/c0py00126k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Deng M, Nair LS, Nukavarapu SP, Kumbar SG, Brown JL, Krogman NR, Weikel AL, Allcock HR, Laurencin CT. Biomimetic, bioactive etheric polyphosphazene-poly(lactide-co-glycolide) blends for bone tissue engineering. J Biomed Mater Res A 2010; 92:114-25. [DOI: 10.1002/jbm.a.32334] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zhang Q, Yan Y, Li S, Feng T. The synthesis and characterization of a novel biodegradable and electroactive polyphosphazene for nerve regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010. [DOI: 10.1016/j.msec.2009.09.013] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Recent advances in synthetic bioelastomers. Int J Mol Sci 2009; 10:4223-4256. [PMID: 20057942 PMCID: PMC2790105 DOI: 10.3390/ijms10104223] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 08/30/2009] [Accepted: 09/08/2009] [Indexed: 12/21/2022] Open
Abstract
This article reviews the degradability of chemically synthesized bioelastomers, mainly designed for soft tissue repair. These bioelastomers involve biodegradable polyurethanes, polyphosphazenes, linear and crosslinked poly(ether/ester)s, poly(ε-caprolactone) copolymers, poly(1,3-trimethylene carbonate) and their copolymers, poly(polyol sebacate)s, poly(diol-citrates) and poly(ester amide)s. The in vitro and in vivo degradation mechanisms and impact factors influencing degradation behaviors are discussed. In addition, the molecular designs, synthesis methods, structure properties, mechanical properties, biocompatibility and potential applications of these bioelastomers were also presented.
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Zhang QS, Yan YH, Li SP, Feng T. Synthesis of a novel biodegradable and electroactive polyphosphazene for biomedical application. Biomed Mater 2009; 4:035008. [DOI: 10.1088/1748-6041/4/3/035008] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Krogman NR, Hindenlang MD, Nair LS, Laurencin CT, Allcock HR. Synthesis of Purine- and Pyrimidine-Containing Polyphosphazenes: Physical Properties and Hydrolytic Behavior. Macromolecules 2008. [DOI: 10.1021/ma8008417] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicholas R. Krogman
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802; Department of Orthopedic Surgery, The University of Virginia, Charlottesville, Virginia 22903; Department of Chemical Engineering, The University of Virginia, Charlottesville, Virginia 22904; and Department of Biomedical Engineering, The University of Virginia, Charlottesville, Virginia 22908
| | - Mark D. Hindenlang
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802; Department of Orthopedic Surgery, The University of Virginia, Charlottesville, Virginia 22903; Department of Chemical Engineering, The University of Virginia, Charlottesville, Virginia 22904; and Department of Biomedical Engineering, The University of Virginia, Charlottesville, Virginia 22908
| | - Lakshmi S. Nair
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802; Department of Orthopedic Surgery, The University of Virginia, Charlottesville, Virginia 22903; Department of Chemical Engineering, The University of Virginia, Charlottesville, Virginia 22904; and Department of Biomedical Engineering, The University of Virginia, Charlottesville, Virginia 22908
| | - Cato T. Laurencin
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802; Department of Orthopedic Surgery, The University of Virginia, Charlottesville, Virginia 22903; Department of Chemical Engineering, The University of Virginia, Charlottesville, Virginia 22904; and Department of Biomedical Engineering, The University of Virginia, Charlottesville, Virginia 22908
| | - Harry R. Allcock
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802; Department of Orthopedic Surgery, The University of Virginia, Charlottesville, Virginia 22903; Department of Chemical Engineering, The University of Virginia, Charlottesville, Virginia 22904; and Department of Biomedical Engineering, The University of Virginia, Charlottesville, Virginia 22908
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Brown JL, Nair LS, Laurencin CT. Solvent/non-solvent sintering: a novel route to create porous microsphere scaffolds for tissue regeneration. J Biomed Mater Res B Appl Biomater 2008; 86:396-406. [PMID: 18161819 DOI: 10.1002/jbm.b.31033] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Solvent/non-solvent sintering creates porous polymeric microsphere scaffolds suitable for tissue engineering purposes with control over the resulting porosity, average pore diameter, and mechanical properties. Five different biodegradable biocompatible polyphosphazenes exhibiting glass transition temperatures from -8 to 41 degrees C and poly (lactide-co-glycolide), (PLAGA) a degradable polymer used in a number of biomedical settings, were examined to study the versatility of the process and benchmark the process to heat sintering. Parameters such as: solvent/non-solvent sintering solution composition and submersion time effect the sintering process. PLAGA microsphere scaffolds fabricated with solvent/non-solvent sintering exhibited an interconnected porosity and pore size of 31.9% and 179.1 mum, respectively which was analogous to that of conventional heat sintered PLAGA microsphere scaffolds. Biodegradable polyphosphazene microsphere scaffolds exhibited a maximum interconnected porosity of 37.6% and a maximum compressive modulus of 94.3 MPa. Solvent/non-solvent sintering is an effective strategy for sintering polymeric microspheres, with a broad spectrum of glass transition temperatures, under ambient conditions making it an excellent fabrication route for developing tissue engineering scaffolds and drug delivery vehicles.
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Affiliation(s)
- Justin L Brown
- Department of Biomedical Engineering, University of Virginia, Virginia, USA
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50
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Nukavarapu SP, Kumbar SG, Brown JL, Krogman NR, Weikel AL, Hindenlang MD, Nair LS, Allcock HR, Laurencin CT. Polyphosphazene/nano-hydroxyapatite composite microsphere scaffolds for bone tissue engineering. Biomacromolecules 2008; 9:1818-25. [PMID: 18517248 PMCID: PMC2746952 DOI: 10.1021/bm800031t] [Citation(s) in RCA: 158] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The nontoxic, neutral degradation products of amino acid ester polyphosphazenes make them ideal candidates for in vivo orthopedic applications. The quest for new osteocompatible materials for load bearing tissue engineering applications has led us to investigate mechanically competent amino acid ester substituted polyphosphazenes. In this study, we have synthesized three biodegradable polyphosphazenes substituted with side groups, namely, leucine, valine, and phenylalanine ethyl esters. Of these polymers, the phenylalanine ethyl ester substituted polyphosphazene showed the highest glass transition temperature (41.6 degrees C) and, hence, was chosen as a candidate material for forming composite microspheres with 100 nm sized hydroxyapatite (nHAp). The fabricated composite microspheres were sintered into a three-dimensional (3-D) porous scaffold by adopting a dynamic solvent sintering approach. The composite microsphere scaffolds showed compressive moduli of 46-81 MPa with mean pore diameters in the range of 86-145 microm. The 3-D polyphosphazene-nHAp composite microsphere scaffolds showed good osteoblast cell adhesion, proliferation, and alkaline phosphatase expression and are potential suitors for bone tissue engineering applications.
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Affiliation(s)
- Syam P. Nukavarapu
- Department of Orthopaedic Surgery, University of Virginia, Virginia 22908
| | | | - Justin L. Brown
- Department of Biomedical Engineering, University of Virginia, Virginia 22908
| | - Nicholas R. Krogman
- Department of Chemistry, The Pennsylvania State University, Pennsylvania 16802
| | - Arlin L. Weikel
- Department of Chemistry, The Pennsylvania State University, Pennsylvania 16802
| | - Mark D. Hindenlang
- Department of Chemistry, The Pennsylvania State University, Pennsylvania 16802
| | - Lakshmi S. Nair
- Department of Orthopaedic Surgery, University of Virginia, Virginia 22908
| | - Harry R Allcock
- Department of Chemistry, The Pennsylvania State University, Pennsylvania 16802
| | - Cato T. Laurencin
- Department of Orthopaedic Surgery, University of Virginia, Virginia 22908
- Department of Biomedical Engineering, University of Virginia, Virginia 22908
- Department of Chemical Engineering, University of Virginia, Virginia 22904
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