1
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Sandal P, Kumari L, Patel P, Singh A, Singh D, Gupta GD, Kurmi BD. Doxorubicin Conjugates: An Efficient Approach for Enhanced Therapeutic Efficacy with Reduced Side Effects. Assay Drug Dev Technol 2023; 21:137-156. [PMID: 37083490 DOI: 10.1089/adt.2022.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023] Open
Abstract
Continuous drug delivery modification is the scientific approach and is a basic need for the efficient therapeutic efficacy of active drug molecules. Polymer-drug conjugates have long been a hallmark of the drug delivery sector, with various conjugates on the market or in clinical trials. Improved drug solubilization, extended blood circulation, decreased immunogenicity, controlled release behavior, and increased safety are the advantages of conjugating drugs to the polymeric carrier like polyethylene glycol (PEG). Polymer therapies have evolved over the last decade, resulting in polymer-drug conjugates with diverse topologies and chemical properties. Traditional nondegradable polymeric carriers like PEG and hydroxy propyl methacrylate have been clinically employed to fabricate polymer-drug conjugates. Still, functionalized polymer-drug conjugates are increasingly being used to increase localized drug delivery and ease of removal. Researchers have developed multifunctional carriers that can "see and treat" patients using medicinal and diagnostic chemicals. This review focused on the various conjugation approaches for attaching the doxorubicin to different polymers to achieve enhanced therapeutic efficacy, that is, increased bioavailability and reduced adverse effects.
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Affiliation(s)
- Pallavi Sandal
- Department of Pharmaceutics, ISF College of Pharmacy, Punjab, India
| | - Lakshmi Kumari
- Department of Pharmaceutics, ISF College of Pharmacy, Punjab, India
| | - Preeti Patel
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Punjab, India
| | - Amrinder Singh
- Department of Pharmaceutics, ISF College of Pharmacy, Punjab, India
| | - Dilpreet Singh
- Department of Pharmaceutics, ISF College of Pharmacy, Punjab, India
| | | | - Balak Das Kurmi
- Department of Pharmaceutics, ISF College of Pharmacy, Punjab, India
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2
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Preparation and Properties of Electrospun PLLA/PTMC Scaffolds. Polymers (Basel) 2022; 14:polym14204406. [PMID: 36297984 PMCID: PMC9611888 DOI: 10.3390/polym14204406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/03/2022] [Accepted: 10/14/2022] [Indexed: 11/25/2022] Open
Abstract
Poly(L-lactide) (PLLA) and PLLA/poly(trimethylene carbonate) (PTMC) scaffolds characterised by different PLLA:PTMC mass ratios (10:0, 9:1, 8:2, 7:3, 6:4 and 5:5) were prepared via electrospinning. The results showed that increasing the PTMC content in the spinning solution caused the following effects: (1) the diameter of the prepared PLLA/PTMC electrospun fibres gradually increased from 188.12 ± 48.87 nm (10:0) to 584.01 ± 60.68 nm (5:5), (2) electrospun fibres with uniform diameters and no beads could be prepared at the PTMC contents of >30%, (3) the elastic modulus of the fibre initially increased and then decreased, reaching a maximum value of 74.49 ± 8.22 Mpa (5:5) and (4) the elongation at the breaking point of the fibres increased gradually from 24.71% to 344.85%. Compared with the PLLA electrospun fibrous membrane, the prepared PLLA/PTMC electrospun fibrous membrane exhibited considerably improved mechanical properties while maintaining good histocompatibility.
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3
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Zhang H, Zheng X, Ahmed W, Yao Y, Bai J, Chen Y, Gao C. Design and Applications of Cell-Selective Surfaces and Interfaces. Biomacromolecules 2018; 19:1746-1763. [PMID: 29665330 DOI: 10.1021/acs.biomac.8b00264] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Tissue regeneration involves versatile types of cells. The accumulation and disorganized behaviors of undesired cells impair the natural healing process, leading to uncontrolled immune response, restenosis, and/or fibrosis. Cell-selective surfaces and interfaces can have specific and positive effects on desired types of cells, allowing tissue regeneration with restored structures and functions. This review outlines the importance of surfaces and interfaces of biomaterials with cell-selective properties. The chemical and biological cues including peptides, antibodies, and other molecules, physical cues such as topography and elasticity, and physiological cues referring mainly to interactions between cells-cells and cell-chemokines or cytokines are effective modulators for achieving cell selectivity upon being applied into the design of biomaterials. Cell-selective biomaterials have also shown practical significance in tissue regeneration, in particular for endothelialization, nerve regeneration, capture of stem cells, and regeneration of tissues of multiple structures and functions.
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Affiliation(s)
- Haolan Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Xiaowen Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Wajiha Ahmed
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Yuejun Yao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Jun Bai
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Yicheng Chen
- Department of Urology, Sir Run-Run Shaw Hospital, College of Medicine , Zhejiang University , Hangzhou 310016 , China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
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4
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Raeisdasteh Hokmabad V, Davaran S, Ramazani A, Salehi R. Design and fabrication of porous biodegradable scaffolds: a strategy for tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1797-1825. [PMID: 28707508 DOI: 10.1080/09205063.2017.1354674] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Current strategies of tissue engineering are focused on the reconstruction and regeneration of damaged or deformed tissues by grafting of cells with scaffolds and biomolecules. Recently, much interest is given to scaffolds which are based on mimic the extracellular matrix that have induced the formation of new tissues. To return functionality of the organ, the presence of a scaffold is essential as a matrix for cell colonization, migration, growth, differentiation and extracellular matrix deposition, until the tissues are totally restored or regenerated. A wide variety of approaches has been developed either in scaffold materials and production procedures or cell sources and cultivation techniques to regenerate the tissues/organs in tissue engineering applications. This study has been conducted to present an overview of the different scaffold fabrication techniques such as solvent casting and particulate leaching, electrospinning, emulsion freeze-drying, thermally induced phase separation, melt molding and rapid prototyping with their properties, limitations, theoretical principles and their prospective in tailoring appropriate micro-nanostructures for tissue regeneration applications. This review also includes discussion on recent works done in the field of tissue engineering.
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Affiliation(s)
- Vahideh Raeisdasteh Hokmabad
- a Department of Chemistry , University of Zanjan , Zanjan , Iran.,b Drug Applied Research Center , Tabriz University of Medical Sciences , Tabriz , Iran
| | - Soodabeh Davaran
- b Drug Applied Research Center , Tabriz University of Medical Sciences , Tabriz , Iran.,c Stem Cell Research Center , Tabriz University of Medical Sciences , Tabriz , Iran
| | - Ali Ramazani
- a Department of Chemistry , University of Zanjan , Zanjan , Iran
| | - Roya Salehi
- c Stem Cell Research Center , Tabriz University of Medical Sciences , Tabriz , Iran.,d Faculty of Advanced Medical Sciences, Department of Medical Nanotechnology , Tabriz University of Medical Sciences , Tabriz , Iran
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5
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Hadler C, Wissel K, Brandes G, Dempwolf W, Reuter G, Lenarz T, Menzel H. Photochemical coating of Kapton® with hydrophilic polymers for the improvement of neural implants. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:286-296. [PMID: 28415465 DOI: 10.1016/j.msec.2017.02.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 12/15/2016] [Accepted: 02/06/2017] [Indexed: 02/05/2023]
Abstract
The polyimide Kapton® was coated photochemically with hydrophilic polymers to prevent undesirable cell growth on the polyimide surface. The polymer coatings were generated using photochemically reactive polymers synthesized by a simple and modular strategy. Suitable polymers or previously synthesized copolymer precursors were functionalized with photoactive arylazide groups by a polymer analogous amide coupling reaction with 4-azidobenzoic acid. A photoactive chitosan derivative (chitosan-Az) and photochemically reactive copolymers containing DMAA, DEAA or MTA as primary monomers were synthesized using this method. The amount of arylazide groups in the polymers was adjusted to approximately 5%, 10% and 20%. As coating on Kapton® all polymers effect a significantly reduced water contact angle (WCA) and consequently a rise of the surface hydrophilicity compared to the untreated Kapton®. The presence of the polymer coatings was also proven by ATR-IR spectroscopy. Coatings with chitosan-Az and the DEAA copolymer cause a distinct inhibition of the growth of fibroblasts. In the case of the DMAA copolymer even a strong anti-adhesive behavior towards fibroblasts was verified. Biocompatibility of the polymer coatings was proven which enables their utilization in biomedical applications.
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Affiliation(s)
- Christoph Hadler
- Institute for Technical Chemistry, Braunschweig University of Technology, Germany.
| | - Kirsten Wissel
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Germany
| | - Gudrun Brandes
- Institute of Cell Biology in the Center of Anatomy, Hannover Medical School, Germany
| | - Wibke Dempwolf
- Institute for Technical Chemistry, Braunschweig University of Technology, Germany
| | - Günter Reuter
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Germany
| | - Thomas Lenarz
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Germany
| | - Henning Menzel
- Institute for Technical Chemistry, Braunschweig University of Technology, Germany.
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6
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Bhattacharya S, Ganivada MN, Dinda H, Das Sarma J, Shunmugam R. Biodegradable Copolymer for Stimuli-Responsive Sustained Release of Doxorubicin. ACS OMEGA 2016; 1:108-117. [PMID: 30023475 PMCID: PMC6044568 DOI: 10.1021/acsomega.6b00018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 06/23/2016] [Indexed: 06/02/2023]
Abstract
Pendent functionalization of biodegradable polymers provides unique importance in biological applications. In this work, we have synthesized a polymeric nanocarrier for the controlled release of the anticancer drug doxorubicin (DOXI). Inspired by the pH responsiveness of acylhydrazine bonds along with the interesting self-assembly behavior of amphiphilic copolymers, this report delineates the development of a PEG-SS-PCL-DOXI copolymer consisting of DOXI, PEG, and a caprolactone backbone. First, the inclusion of a PEG moiety in the copolymer helps to achieve biocompatibility and aqueous solubility as well as a prolonged circulation time of the nanocarrier. Second, an acid-sensitive acylhydrazine-based linkage is chosen to attach DOXI to trigger sustained drug release, whereas the inclusion of an enzymatically cleavable disulfide linkage in the backbone adds to the advantage of backbone biodegradability at the intracellular level.
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Affiliation(s)
- Sayantani Bhattacharya
- Polymer
Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Mutyala Naidu Ganivada
- Polymer
Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Himadri Dinda
- Polymer
Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Jayasri Das Sarma
- Department
of Biological Sciences, Indian Institute
of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Raja Shunmugam
- Polymer
Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
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7
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Ajiro H, Haramiishi Y, Chanthaset N, Akashi M. Polymer design using trimethylene carbonate with ethylene glycol units for biomedical applications. Polym J 2016. [DOI: 10.1038/pj.2016.35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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8
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Ganivada MN, Kumar P, Kanjilal P, Dinda H, Sarma JD, Shunmugam R. Polycarbonate-based biodegradable copolymers for stimuli responsive targeted drug delivery. Polym Chem 2016. [DOI: 10.1039/c6py00615a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The newly developed polymeric nanocarrier could open a new avenue for cancer therapy, due to its unique design as well as, most importantly, its biocompatible and biodegradable nature.
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Affiliation(s)
- Mutyala Naidu Ganivada
- Polymer Research Centre
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Pawan Kumar
- Polymer Research Centre
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Pintu Kanjilal
- Polymer Research Centre
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Himadri Dinda
- Polymer Research Centre
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Jayasri Das Sarma
- Department of Biological Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Raja Shunmugam
- Polymer Research Centre
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
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9
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Ren X, Feng Y, Guo J, Wang H, Li Q, Yang J, Hao X, Lv J, Ma N, Li W. Surface modification and endothelialization of biomaterials as potential scaffolds for vascular tissue engineering applications. Chem Soc Rev 2015; 44:5680-742. [DOI: 10.1039/c4cs00483c] [Citation(s) in RCA: 359] [Impact Index Per Article: 39.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review highlights the recent developments of surface modification and endothelialization of biomaterials in vascular tissue engineering applications.
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Affiliation(s)
- Xiangkui Ren
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Yakai Feng
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Jintang Guo
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Haixia Wang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Qian Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Jing Yang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Xuefang Hao
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Juan Lv
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Nan Ma
- Institute of Chemistry and Biochemistry
- Free University of Berlin
- D-14195 Berlin
- Germany
| | - Wenzhong Li
- Department of Cardiac Surgery
- University of Rostock
- D-18057 Rostock
- Germany
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10
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Zhang Q, Ren H, Baker G. Synthesis of a library of propargylated and PEGylated α-hydroxy acids toward "clickable" polylactides via hydrolysis of cyanohydrin derivatives. J Org Chem 2014; 79:9546-55. [PMID: 25255205 PMCID: PMC4201358 DOI: 10.1021/jo5016135] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Indexed: 02/02/2023]
Abstract
A new simple and practical protocol for scalable synthesis of a novel library of propargylated and PEGylated α-hydroxy acids toward the preparation of "clickable" polylactides was described. The overall synthesis starting from readily available propargyl alcohol, bromoacetaldehyde diethyl acetal, and OEGs or PEGs was developed as a convenient procedure with low cost and no need of column chromatographic purification. The terminal alkyne functionality survives from hydrolysis of the corresponding easily accessible cyanohydrin derivatives in methanolic sulfuric acid. Facile desymmetrization, monofunctionalization, and efficient chain-elongation coupling of OEGs further enable the incorporation of OEGs to α-hydroxy acids in a simple and efficient manner. At the end, synthesis of allyloxy lactic acid indicates that an alkene group is also compatible with the developed method.
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Affiliation(s)
- Quanxuan Zhang
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Hong Ren
- Department
of Chemistry and Chemical Biology, Harvard
University, Cambridge, Massachusetts 02138, United States
- Athinoula
A. Martinos Center for Biomedical Imaging, Department of Radiology,
Massachusetts General Hospital, Harvard
Medical School, Charlestown, Massachusetts 02129, United States
| | - Gregory
L. Baker
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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11
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Zhang Q, Ren H, Baker GL. An economical and safe procedure to synthesize 2-hydroxy-4-pentynoic acid: A precursor towards 'clickable' biodegradable polylactide. Beilstein J Org Chem 2014; 10:1365-71. [PMID: 24991290 PMCID: PMC4077406 DOI: 10.3762/bjoc.10.139] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 05/17/2014] [Indexed: 11/23/2022] Open
Abstract
2-Hydroxy-4-pentynoic acid (1) is a key intermediate towards 'clickable' polylactide which allows for efficient introduction of a broad range of pendant functional groups onto polymers from a single monomer via convenient 'click' chemistry with organic azides. The incorporation of various pendant functional groups could effectively tailor the physicochemical properties of polylactide. The reported synthesis of 1 started from propargyl bromide and ethyl glyoxylate. However, both of starting materials are expensive and unstable; especially, propargyl bromide is shock-sensitive and subjected to thermal explosive decomposition, which makes the preparation of 1 impractical with high cost and high risk of explosion. Herein, we report a simple, economical and safe synthetic route to prepare 1 using cheap and commercially available diethyl 2-acetamidomalonate (4) and propargyl alcohol. The desired product 1 was obtained via alkylation of malonate 4 with propargyl tosylate followed by a one-pot four-step sequence of hydrolysis, decarboxylation, diazotization and hydroxylation of propargylic malonate 5 without work-up of any intermediate.
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Affiliation(s)
- Quanxuan Zhang
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Hong Ren
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA
| | - Gregory L Baker
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
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12
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Ganivada MN, Rao N V, Dinda H, Kumar P, Das Sarma J, Shunmugam R. Biodegradable Magnetic Nanocarrier for Stimuli Responsive Drug Release. Macromolecules 2014. [DOI: 10.1021/ma500384m] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mutyala Naidu Ganivada
- Polymer Research Centre,
Department of Chemical Sciences and ‡Department of
Biological Sciences, Indian Institute of Science Education and Research Kolkata, India
| | - Vijayakameswara Rao N
- Polymer Research Centre,
Department of Chemical Sciences and ‡Department of
Biological Sciences, Indian Institute of Science Education and Research Kolkata, India
| | - Himadri Dinda
- Polymer Research Centre,
Department of Chemical Sciences and ‡Department of
Biological Sciences, Indian Institute of Science Education and Research Kolkata, India
| | - Pawan Kumar
- Polymer Research Centre,
Department of Chemical Sciences and ‡Department of
Biological Sciences, Indian Institute of Science Education and Research Kolkata, India
| | - Jayasri Das Sarma
- Polymer Research Centre,
Department of Chemical Sciences and ‡Department of
Biological Sciences, Indian Institute of Science Education and Research Kolkata, India
| | - Raja Shunmugam
- Polymer Research Centre,
Department of Chemical Sciences and ‡Department of
Biological Sciences, Indian Institute of Science Education and Research Kolkata, India
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13
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Yang X, Cao D, Wang N, Sun L, Li L, Nie S, Wu Q, Liu X, Yi C, Gong C. In Vitro and In Vivo Safety Evaluation of Biodegradable Self-Assembled Monomethyl Poly (Ethylene Glycol)–Poly(ε-Caprolactone)–Poly (Trimethylene Carbonate) Micelles. J Pharm Sci 2014; 103:305-13. [DOI: 10.1002/jps.23800] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 11/01/2013] [Accepted: 11/07/2013] [Indexed: 02/03/2023]
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14
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PROGRESS IN THE DEVELOPMENT OF BIOMEDICAL POLYMER MATERIALS FABRICATED BY 3-DIMENSIONAL PRINTING TECHNOLOGY. ACTA POLYM SIN 2013. [DOI: 10.3724/sp.j.1105.2013.12430] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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15
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Cho YM, Lee HJ, Heo Y, Park SH, Seo SY, Han JH, Son TI. Enhancement of fibroblastic proliferation from photoreactive starch with immobilized epidermal growth factor. J Appl Polym Sci 2013. [DOI: 10.1002/app.38919] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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16
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17
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Triblock copolymers of -caprolactone, trimethylene carbonate, and L-lactide: Effects of using random copolymer as hard-block. J Mech Behav Biomed Mater 2012; 6:80-8. [DOI: 10.1016/j.jmbbm.2011.11.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 11/01/2011] [Accepted: 11/03/2011] [Indexed: 11/23/2022]
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18
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Dargaville BL, Vaquette C, Peng H, Rasoul F, Chau YQ, Cooper-White JJ, Campbell JH, Whittaker AK. Cross-linked poly(trimethylene carbonate-co-L-lactide) as a biodegradable, elastomeric scaffold for vascular engineering applications. Biomacromolecules 2011; 12:3856-69. [PMID: 21999900 DOI: 10.1021/bm201291e] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A series of copolymers of trimethylene carbonate (TMC) and L-lactide (LLA) were synthesized and evaluated as scaffolds for the production of artificial blood vessels. The polymers were end-functionalized with acrylate, cast into films, and cross-linked using UV light. The mechanical, degradation, and biocompatibility properties were evaluated. High TMC polymers showed mechanical properties comparable to human arteries (Young's moduli of 1.2-1.8 MPa and high elasticity with repeated cycling at 10% strain). Over 84 days degradation in PBS, the modulus and material strength decreased gradually. The polymers were nontoxic and showed good cell adhesion and proliferation over 7 days using human mesenchymal stem cells. When implanted into the rat peritoneal cavity, the polymers elicited formation of tissue capsules composed of myofibroblasts, resembling immature vascular smooth muscle cells. Thus, these polymers showed properties which were tunable and favorable for vascular tissue engineering, specifically, the growth of artificial blood vessels in vivo.
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Affiliation(s)
- Bronwin L Dargaville
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, QLD 4072 St. Lucia, Australia
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19
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Widjaja LK, Kong JF, Chattopadhyay S, Lipik VT, Liow SS, Abadie MJM, Venkatraman SS. Triblock copolymers of ε-caprolactone, L-lactide, and trimethylene carbonate: biodegradability and elastomeric behavior. J Biomed Mater Res A 2011; 99:38-46. [PMID: 21793195 DOI: 10.1002/jbm.a.33161] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 04/25/2011] [Accepted: 05/09/2011] [Indexed: 11/07/2022]
Abstract
For the triblock copolymer of ε-caprolactone, trimethylene carbonate, and L-lactide, where L-lactide blocks form the two ends, there is a range of compositions over which elastomeric behavior is obtained. Within this composition range, these polymers show good creep and recovery at ambient temperature, and exhibit high elongations to break. Additionally, we demonstrate that the recovery is independent of stress and strain for the elastomer compositions. The range of compositions that yield elastomeric character is rationalized based on the structure; specifically, there must be a minimum crystallinity of the end blocks and no crystallinity in the midblock, in addition to molar mass requirements. These polymers degrade by simple hydrolysis, and the rate of degradation is potentially programmable by manipulation of the molar ratio of hard segment to soft segment. Compared to biodegradable polyurethane, these polymers are expected to yield less harmful degradation products, and offer more variables for manipulation of properties. These polymers are also processable from the melt at temperatures exceeding about 130 °C. We expect to use these polymers in a variety of applications, including stent coatings, fully-degradable stents, and atrial septal defect occluders.
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Affiliation(s)
- Leonardus Kresna Widjaja
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.
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20
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Na HN, Kim KI, Han JH, Lee JG, Son TI, Han DK, Ito Y, Song KS, Jang EC. Synthesis of O-carboxylated low molecular chitosan with azido phenyl group: Its application for adhesion prevention. Macromol Res 2010. [DOI: 10.1007/s13233-010-1007-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Melchels FP, Feijen J, Grijpma DW. A review on stereolithography and its applications in biomedical engineering. Biomaterials 2010; 31:6121-30. [DOI: 10.1016/j.biomaterials.2010.04.050] [Citation(s) in RCA: 1125] [Impact Index Per Article: 80.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2010] [Accepted: 04/22/2010] [Indexed: 10/19/2022]
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Ohno K, Kayama Y, Ladmiral V, Fukuda T, Tsujii Y. A Versatile Method of Initiator Fixation for Surface-Initiated Living Radical Polymerization on Polymeric Substrates. Macromolecules 2010. [DOI: 10.1021/ma1008258] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kohji Ohno
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yuzo Kayama
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Vincent Ladmiral
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Takeshi Fukuda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yoshinobu Tsujii
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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23
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Tissue Response to, and Degradation Rate of, Photocrosslinked Trimethylene Carbonate-Based Elastomers Following Intramuscular Implantation. MATERIALS 2010. [PMCID: PMC5513461 DOI: 10.3390/ma3021156] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Cylindrical elastomers were prepared through the UV-initiated crosslinking of terminally acrylated, 8,000 Da star-poly(trimethylene carbonate-co-ε-caprolactone) and star-poly(trimethylene carbonate-co-d,l-lactide). These elastomers were implanted intramuscularly into the hind legs of male Wistar rats to determine the influence of the comonomer on the weight loss, tissue response, and change in mechanical properties of the elastomer. The elastomers exhibited only a mild inflammatory response that subsided after the first week; the response was greater for the stiffer d,l-lactide-containing elastomers. The elastomers exhibited weight loss and sol content changes consistent with a bulk degradation mechanism. The d,l-lactide-containing elastomers displayed a nearly zero-order change in Young’s modulus and stress at break over the 30 week degradation time, while the ε-caprolactone-containing elastomers exhibited little change in modulus or stress at break.
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24
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A photoimmobilizable sulfobetaine-based polymer for a nonbiofouling surface. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010; 30:316-322. [DOI: 10.1016/j.msec.2009.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Revised: 11/10/2009] [Accepted: 11/13/2009] [Indexed: 10/20/2022]
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25
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Hou Q, Grijpma DW, Feijen J. Creep-resistant elastomeric networks prepared by photocrosslinking fumaric acid monoethyl ester-functionalized poly(trimethylene carbonate) oligomers. Acta Biomater 2009; 5:1543-51. [PMID: 19179128 DOI: 10.1016/j.actbio.2008.12.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Revised: 11/08/2008] [Accepted: 12/16/2008] [Indexed: 11/17/2022]
Abstract
Biodegradable elastomeric networks were prepared from ethyl fumarate-functionalized poly(trimethylene carbonate) oligomers. Photocrosslinkable macromers were synthesized by reacting three-armed, hydroxyl group-terminated poly(trimethylene carbonate) oligomers with fumaric acid monoethyl ester at room temperature using N,N-dicyclohexylcarbodiimide as a coupling agent and 4-dimethylamino pyridine as a catalyst. Poly(trimethylene carbonate) macromers with molecular weights ranging between 4500 and 13,900 were prepared and crosslinked by ultraviolet-initiated radical polymerization. The gel contents of the resulting transparent networks varied between 74% and 80%. All obtained networks had low glass transition temperatures, which varied between -18 and -13 degrees C. They showed rubber-like behavior and excellent mechanical properties, with tensile strengths and elongations at break of up to 17.5 MPa and 750%, respectively. Moreover, static- and dynamic creep experiments showed that these amorphous networks were highly elastic and resistant to creep. In cyclic tensile testing to 50% strain, the permanent deformation after 20 cycles was 0%, while static creep tests at 35% of the yield stress did not indicate creep or permanent deformation after removal of the load. Porous structures were prepared by photopolymerizing the macromers in the presence of salt particles, and subsequent leaching of the salt. Such networks, built up of non-toxic compounds and designed to release benign degradation products, may find application as tissue engineering scaffolds for dynamic cell culture.
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Affiliation(s)
- Qingpu Hou
- Institute for Biomedical Technology (BMTI) and Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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26
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Sakuragi M, Tsuzuki S, Hasuda H, Wada A, Matoba K, Kubo I, Ito Y. Synthesis of a photoimmobilizable histidine polymer for surface modification. J Appl Polym Sci 2009. [DOI: 10.1002/app.29427] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Tsuzuki S, Wada A, Ito Y. Photo-immobilization of biological components on gold-coated chips for measurements using surface plasmon resonance (SPR) and a quartz crystal microbalance (QCM). Biotechnol Bioeng 2009; 102:700-7. [PMID: 18989902 DOI: 10.1002/bit.22102] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Saki Tsuzuki
- Nano Medical Engineering Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
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28
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Jansen J, Melchels FPW, Grijpma DW, Feijen J. Fumaric Acid Monoethyl Ester-Functionalized Poly(d,l-lactide)/N-vinyl-2-pyrrolidone Resins for the Preparation of Tissue Engineering Scaffolds by Stereolithography. Biomacromolecules 2008; 10:214-20. [DOI: 10.1021/bm801001r] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Janine Jansen
- Institute for Biomedical Technology (BMTI) and Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands, and Department of Biomedical Engineering, University Medical Center Groningen and University of Groningen, P.O. Box 196, 9700 AD Groningen, The Netherlands
| | - Ferry P. W. Melchels
- Institute for Biomedical Technology (BMTI) and Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands, and Department of Biomedical Engineering, University Medical Center Groningen and University of Groningen, P.O. Box 196, 9700 AD Groningen, The Netherlands
| | - Dirk W. Grijpma
- Institute for Biomedical Technology (BMTI) and Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands, and Department of Biomedical Engineering, University Medical Center Groningen and University of Groningen, P.O. Box 196, 9700 AD Groningen, The Netherlands
| | - Jan Feijen
- Institute for Biomedical Technology (BMTI) and Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands, and Department of Biomedical Engineering, University Medical Center Groningen and University of Groningen, P.O. Box 196, 9700 AD Groningen, The Netherlands
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29
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Matsudaira T, Tsuzuki S, Wada A, Suwa A, Kohsaka H, Tomida M, Ito Y. Automated microfluidic assay system for autoantibodies found in autoimmune diseases using a photoimmobilized autoantigen microarray. Biotechnol Prog 2008; 24:1384-92. [PMID: 19194953 DOI: 10.1002/btpr.63] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takahiro Matsudaira
- Nano Medical Enginering Laboratory, RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama, Japan
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30
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Wang L, Jia X, Chen Y, Che Y, Yuan Z. Synthesis, degradability, and cell affinity of poly (DL-lactide-co-RS-hydroxyethyl-β-malolactonate). J Biomed Mater Res A 2008; 87:459-69. [DOI: 10.1002/jbm.a.31747] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Hu X, Chen X, Liu S, Shi Q, Jing X. Novel aliphatic poly(ester-carbonate) with pendant allyl ester groups and its folic acid functionalization. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22530] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Mathot F, des Rieux A, Ariën A, Schneider YJ, Brewster M, Préat V. Transport mechanisms of mmePEG750P(CL-co-TMC) polymeric micelles across the intestinal barrier. J Control Release 2007; 124:134-43. [DOI: 10.1016/j.jconrel.2007.09.001] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Revised: 08/29/2007] [Accepted: 09/03/2007] [Indexed: 11/30/2022]
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33
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Puleo CM, Yeh HC, Wang TH. Applications of MEMS Technologies in Tissue Engineering. ACTA ACUST UNITED AC 2007; 13:2839-54. [DOI: 10.1089/ten.2007.0214] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Christopher M. Puleo
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland
| | - Hsin-Chih Yeh
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland
| | - Tza-Huei Wang
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland
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34
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Amsden B. Curable, biodegradable elastomers: emerging biomaterials for drug delivery and tissue engineering. SOFT MATTER 2007; 3:1335-1348. [PMID: 32900112 DOI: 10.1039/b707472g] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Biodegradable elastomers have a number of potential applications in the biomedical area, especially in the emerging field of soft-tissue engineering where the mechanical properties of the polymer scaffold should match those of the tissue to be grown. An increasing number of synthesis strategies have been employed in order to prepare such elastomers. In this review, these synthesis strategies and the properties of these elastomers are outlined. The factors that influence the characteristics of these elastomers including mechanical properties, degradation rate, and mechanical property change during degradation, are discussed in terms of the design of the elastomer and their advantages and disadvantages for the biomedical applications considered.
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Affiliation(s)
- Brian Amsden
- Department of Chemical Engineering, Queen's University, Kingston, ON, Canada.
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35
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Ifkovits JL, Burdick JA. Review: Photopolymerizable and Degradable Biomaterials for Tissue Engineering Applications. ACTA ACUST UNITED AC 2007; 13:2369-85. [PMID: 17658993 DOI: 10.1089/ten.2007.0093] [Citation(s) in RCA: 397] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Photopolymerizable and degradable biomaterials are finding widespread application in the field of tissue engineering for the engineering of tissues such as bone, cartilage, and liver. The spatial and temporal control afforded by photoinitiated polymerizations has allowed for the development of injectable materials that can deliver cells and growth factors, as well as for the fabrication of scaffolding with complex structures. The materials developed for these applications range from entirely synthetic polymers (e.g., poly(ethylene glycol)) to purely natural polymers (e.g., hyaluronic acid) that are modified with photoreactive groups, with degradation based on the hydrolytic or enzymatic degradation of bonds in the polymer backbone or crosslinks. The degradation behavior also ranges from purely bulk to entirely surface degrading, based on the nature of the backbone chemistry and type of degradable units. The mechanical properties of these polymers are primarily based on factors such as the network crosslinking density and polymer concentration. As we better understand biological features necessary to control cellular behavior, smarter materials are being developed that can incorporate and mimic many of these factors.
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Affiliation(s)
- Jamie L Ifkovits
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
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36
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Bacakova L, Filova E, Kubies D, Machova L, Proks V, Malinova V, Lisa V, Rypacek F. Adhesion and growth of vascular smooth muscle cells in cultures on bioactive RGD peptide-carrying polylactides. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2007; 18:1317-23. [PMID: 17387596 DOI: 10.1007/s10856-006-0074-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2005] [Accepted: 05/01/2006] [Indexed: 05/14/2023]
Abstract
The surface of poly(L-lactide) (PLLA) films deposited on glass coverslips was modified with poly(DL-lactide) (PDLLA), or 1:4 mixtures of PDLLA and PDLLA-b-PEO block copolymers, in which either none, 5% or 20% of the copolymer molecules carried a synthetic extracellular matrix-derived ligand for integrin adhesion receptors, the GRGDSG oligopeptide, attached to the end of the PEO chain. The materials, perspective for vascular tissue engineering, were seeded with rat aortic smooth muscle cells (11,000 cells/cm(2)) and the adhesion, spreading, DNA synthesis and proliferation of these cells was followed on inert and bioactive surfaces. In 24-h-old cultures in serum-supplemented media, the number of cells adhering to the PDLLA-b-PEO copolymer was almost eight times lower than that on the control PDLLA surface. On the surfaces containing 5% and 20% GRGDSG-PEO-b-PDLLA copolymer, the number of cells increased 6- and 3-fold respectively, compared to the PDLLA-b-PEO copolymer alone. On PDLLA-b-PEO copolymer alone, the cells were typically round and non-spread, whereas on GRGDSG-modified surfaces the cell spreading areas approached those found on PDLLA, reaching values of 991 microm(2) and 611 microm(2) for 5% and 20% GRGDSG respectively, compared to 958 microm(2) for PDLLA. The cells on GRGDSG-grafted copolymers were able to form vinculin-containing focal adhesion plaques, to synthesize DNA and even proliferate in a serum-free medium, which indicates specific binding to the GRGDSG sequences through their adhesion receptors.
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MESH Headings
- Animals
- Cell Adhesion/drug effects
- Cell Culture Techniques/methods
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Cells, Cultured
- Coated Materials, Biocompatible/administration & dosage
- Coated Materials, Biocompatible/chemistry
- Male
- Materials Testing
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/physiology
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/physiology
- Oligopeptides/administration & dosage
- Oligopeptides/chemistry
- Polyesters/chemistry
- Rats
- Rats, Wistar
- Surface Properties
- Tissue Engineering/methods
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Affiliation(s)
- Lucie Bacakova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic.
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37
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Mathot F, Schanck A, Van Bambeke F, Ariën A, Noppe M, Brewster M, Préat V. Passive diffusion of polymeric surfactants across lipid bilayers. J Control Release 2007; 120:79-87. [PMID: 17524515 DOI: 10.1016/j.jconrel.2007.03.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2006] [Revised: 03/20/2007] [Accepted: 03/23/2007] [Indexed: 11/29/2022]
Abstract
Self-assembling polymeric surfactant, mmePEG(750)P(CL-co-TMC) [monomethylether poly(ethylene glycol)(750)-poly(caprolactone-co-trimethylene carbonate)], increases drug solubility and crosses an enterocyte monolayer both in vitro and in vivo. The aims of the present work were to investigate whether mmePEG(750)P(CL-co-TMC) polymers can diffuse passively through lipid bilayer using parallel artificial membrane permeability assay (PAMPA) and affect membrane properties using liposomes as model. The mmePEG(750)P(CL-co-TMC) polymer was able to cross by passive diffusion an enterocyte-mimicking membrane in PAMPA at concentration which did not perturb membrane integrity. A weak rigidification associated with a low increase in permeability of liposomal lipid bilayers was observed. These data suggest that polymeric surfactants can cross the lipid membrane by passive diffusion and interact with lipid bilayers.
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Affiliation(s)
- Frédéric Mathot
- Université Catholique de Louvain, Unité de Pharmacie Galénique, UCL, Brussels, Belgium
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38
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Shen JY, Pan XY, Lim CH, Chan-Park MB, Zhu X, Beuerman RW. Synthesis, characterization, and in vitro degradation of a biodegradable photo-cross-linked film from liquid poly(epsilon-caprolactone-co-lactide-co-glycolide) diacrylate. Biomacromolecules 2007; 8:376-85. [PMID: 17291060 DOI: 10.1021/bm060766c] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There has been little study on the effect of composition or molecular weight on the biodegradation rate of photo-cross-linked biodegradable aliphatic polyesters though such information is important for tissue engineering scaffolds. We have synthesized a new series of photopolymerizable linear poly(epsilon-caprolactone-co-lactide-co-glycolide) diacrylates with different molecular weights (Mn = 1800, 4800, and 9300 Da) and compositions (20%, 40%, and 60% epsilon-CL) and studied their biodegradation rates. The resultant oligomers were amorphous and appeared as viscous liquids at room temperature. Liquid-to-solid polymerization was carried out by UV irradiation in the presence of a photoinitiator. The photocuring yield was high (greater than 95%), and the photo-cross-linked polymers were amorphous and rubbery. Mechanical measurements showed that the polymers can be stretchable or rigid; the high molecular weight/low epsilon-CL network has a strain of 176% and a modulus of 1.66 MPa while the low molecular weight/high epsilon-CL network has a strain of 21% and a modulus of 12.3 MPa. In a 10 week in vitro biodegradation study, the polymers exhibited a two-stage degradation behavior. In the first stage, the polymer weight and strain remained almost constant, but a linear decrease in the Young's modulus (E) and ultimate stress (sigma) were observed. Lower oligomer molecular weight or epsilon-CL content correlated with a faster decrease in Young's modulus. In the second stage, which began when the Young's modulus dropped below 1 MPa, there was rapid weight loss and strain increase. The lower the epsilon-CL content, the earlier the second stage happened. Low molecular weight and high epsilon-CL content correlated with a longer modulus half-life (time for the modulus to degrade to 50% of its initial value). The degradation results suggest principles that may be helpful in predicting the biodegradation behavior of similar polymeric cross-linked networks. Films formed from these new polymers have excellent biocompatibility with smooth muscle cells.
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Affiliation(s)
- Jin Y Shen
- The Biological and Chemical Process Engineering Laboratory, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
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39
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Wang L, Jia X, Yuan Z. Synthesis and characterization of novel functionalized polylactides with pendent hydroxyl arms. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.08.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Mathot F, van Beijsterveldt L, Préat V, Brewster M, Ariën A. Intestinal uptake and biodistribution of novel polymeric micelles after oral administration. J Control Release 2006; 111:47-55. [PMID: 16460829 DOI: 10.1016/j.jconrel.2005.11.012] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2005] [Revised: 11/10/2005] [Accepted: 11/21/2005] [Indexed: 11/19/2022]
Abstract
To determine the fate of polymeric micelles after oral administration, we investigated the possible transport of polymeric micelles across Caco-2 monolayers and their biodistribution in rats after per os administration of [14C]-labelled mmePEG750P(CL-co-TMC) micelles containing risperidone (BCS Class II drug). mmePEG750P(CL-co-TMC) was able to cross Caco-2 monolayer via a saturable transport mechanism. The oral bioavailability of the polymer was 40%. Polymeric micelles based on mmePEG750P(CL-co-TMC) showed very low clearance by the reticuloendothelial system (RES) and a renal excretion. A sustained release of risperidone was observed.
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Affiliation(s)
- Frédéric Mathot
- Université Catholique de Louvain, Department of Pharmaceutical Technology, Avenue E. Mounier 73 UCL 73.20, 1200 Brussels, Belgium
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41
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Kricheldorf HR, Rost S. Biodegradable Multiblock Copolyesters Prepared from ε-Caprolactone, l-Lactide, and Trimethylene Carbonate by Means of Bismuth Hexanoate. Macromolecules 2005. [DOI: 10.1021/ma050439h] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hans R. Kricheldorf
- Institut für Technische und Makromolekulare Chemie, Bundesstrasse 45, D-20146 Hamburg, Germany
| | - Simon Rost
- Institut für Technische und Makromolekulare Chemie, Bundesstrasse 45, D-20146 Hamburg, Germany
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42
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Zhang H, Hutmacher DW, Chollet F, Poo AN, Burdet E. Microrobotics and MEMS-Based Fabrication Techniques for Scaffold-Based Tissue Engineering. Macromol Biosci 2005; 5:477-89. [PMID: 15968638 DOI: 10.1002/mabi.200400202] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Scaffold based tissue engineering strategies use cells, biomolecules and a scaffold to promote the repair and regeneration of tissues. Although scaffold-based tissue engineering approaches are being actively developed, most are still experimental, and it is not yet clear what defines an ideal scaffold/cell construct. Solid free form fabrication (SFF) techniques can precisely control matrix architecture (size, shape, interconnectivity, branching, geometry and orientation). The SFF methods enable the fabrication of scaffolds with various designs and material compositions, thus providing a control of mechanical properties, biological effects and degradation kinetics. This paper reviews the application of micro-robotics and MEMS-based fabrication techniques for scaffold design and fabrication. It also presents a novel robotic technique to fabricate scaffold/cell constructs for tissue engineering by the assembly of microscopic building blocks.
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Affiliation(s)
- Han Zhang
- Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, Engineering Drive 1, Singapore 119260, Singapore
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43
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Grijpma DW, Hou Q, Feijen J. Preparation of biodegradable networks by photo-crosslinking lactide, ε-caprolactone and trimethylene carbonate-based oligomers functionalized with fumaric acid monoethyl ester. Biomaterials 2005; 26:2795-802. [PMID: 15603775 DOI: 10.1016/j.biomaterials.2004.08.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2004] [Accepted: 08/04/2004] [Indexed: 10/26/2022]
Abstract
Biodegradable polymer networks were prepared from fumaric acid derivatives of oligomeric esters. Photo-crosslinkable macromers were prepared by reacting star-shaped hydroxyl-group terminated lactide, epsilon-caprolactone and trimethylene carbonate based oligomers and fumaric acid monoethyl ester in the presence of N,N-dicyclohexylcarbodiimide and 4-dimethylamino pyridine at room temperature. The functionalization method is facile and suited for many hydroxyl-terminated oligomers. The reactivity of the fumarate end groups is such that, upon crosslinking by UV radical polymerization, networks with high gel contents (up to 96%) can be obtained without the addition of reactive diluents. The physical properties of the networks can be tuned by adjusting the composition, architecture and molecular weight of the oligomeric precursors. Such networks, built up of non-toxic compounds and designed to release benign degradation products, may find wide application in tissue engineering and other areas of biomedical research.
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Affiliation(s)
- Dirk W Grijpma
- Faculty of Science and Technology, Department of Polymer Chemistry and Biomaterials, Institute for Biomedical Technology (BMTI), University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands.
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44
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Kwon IK, Matsuda T. Photo-polymerized microarchitectural constructs prepared by microstereolithography (μSL) using liquid acrylate-end-capped trimethylene carbonate-based prepolymers. Biomaterials 2005; 26:1675-84. [PMID: 15576141 DOI: 10.1016/j.biomaterials.2004.06.041] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2004] [Accepted: 06/25/2004] [Indexed: 10/26/2022]
Abstract
Precision microarchitectural constructs made of acrylated trimethylene carbonate (TMC)-based liquid prepolymers were photo-polymerized using a custom-designed microstereolithographic apparatus. In this study, three different photo-polymerizable liquid prepolymers were prepared by the polymerization of TMC with a low molecular weight poly(ethylene glycol) (PEG) (mol. wt. 200 or 1000); designated as PEG200 or PEG1000, respectively or trimethylolpropane (TMP) as an initiator, and subsequently end-capped with an acrylate group. As a result of layer-by-layer photo-irradiation of the prepolymer with a movable ultraviolet light pen driven by computer-aided design, a three-dimensional (3D) micropillar array, a microbank array, a microcone array, and multi-microtunnels formed on a platform plate or a glass plate were precisely fabricated. The PEG-based polymers exhibited a very low cell adhesion potential, whereas the TMP-based hydrophobic polymer exhibited high cell adhesion and proliferation potentials. The microbank array, which consisted of a plate made of the TMP-based polymer and microbanks made of the PEG200-based polymer, caused cell adhesion and proliferation only on the plate. Upon the implantation of microcone arrays under the subcutis of rats, the photo-polymerized construct made of the poorly swellable PEG200-based polymer exhibited only surface erosion and limited drug loading and releasing potentials. On the other hand, the photo-polymerized construct made of the highly swellable PEG1000-based polymer exhibited not only surface erosion but also bulk erosion and high drug loading and releasing potentials. In this paper, we discuss their potential biomedical applications.
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Affiliation(s)
- Il Keun Kwon
- Division of Biomedical Engineering, Graduate School of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Kricheldorf HR, Hachmann-Thießen H. Telechelic and Star-Shaped Poly(ε-caprolactone) Functionalized with Triethoxysilyl Groups - New Biodegradable Coatings and Adhesives. MACROMOL CHEM PHYS 2005. [DOI: 10.1002/macp.200400494] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hutmacher DW, Sittinger M, Risbud MV. Scaffold-based tissue engineering: rationale for computer-aided design and solid free-form fabrication systems. Trends Biotechnol 2004; 22:354-62. [PMID: 15245908 DOI: 10.1016/j.tibtech.2004.05.005] [Citation(s) in RCA: 531] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
One of the milestones in tissue engineering has been the development of 3D scaffolds that guide cells to form functional tissue. Recently, mouldless manufacturing techniques, known as solid free-form fabrication (SFF), or rapid prototyping, have been successfully used to fabricate complex scaffolds. Similarly, to achieve simultaneous addition of cells during the scaffold fabrication, novel robotic assembly and automated 3D cell encapsulation techniques are being developed. As a result of these technologies, tissue-engineered constructs can be prepared that contain a controlled spatial distribution of cells and growth factors, as well as engineered gradients of scaffold materials with a predicted microstructure. Here, we review the application, advancement and future directions of SFF techniques in the design and creation of scaffolds for use in clinically driven tissue engineering.
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Affiliation(s)
- Dietmar W Hutmacher
- Division of Bioengineering and Department of Orthopaedic Surgery, National University of Singapore, 119260, Singapore.
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Albertsson AC, Varma IK. Recent Developments in Ring Opening Polymerization of Lactones for Biomedical Applications. Biomacromolecules 2003; 4:1466-86. [PMID: 14606869 DOI: 10.1021/bm034247a] [Citation(s) in RCA: 1181] [Impact Index Per Article: 56.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aliphatic polyesters prepared by ring-opening polymerization of lactones are now used worldwide as bioresorbable devices in surgery (orthopaedic devices, sutures, stents, tissue engineering, and adhesion barriers) and in pharmacology (control drug delivery). This review presents the various methods of the synthesis of polyesters and tailoring the properties by proper control of molecular weight, composition, and architecture so as to meet the stringent requirements of devices in the medical field. The effect of structure on properties and degradation has been discussed. The applications of these polymers in the biomedical field are described in detail.
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Affiliation(s)
- Ann-Christine Albertsson
- Department of Fibre and Polymer Technology, The Royal Institute of Technology, S-10044 Stockholm, Sweden
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Hersel U, Dahmen C, Kessler H. RGD modified polymers: biomaterials for stimulated cell adhesion and beyond. Biomaterials 2003; 24:4385-415. [PMID: 12922151 DOI: 10.1016/s0142-9612(03)00343-0] [Citation(s) in RCA: 1731] [Impact Index Per Article: 82.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Since RGD peptides (R: arginine; G: glycine; D: aspartic acid) have been found to promote cell adhesion in 1984 (Cell attachment activity of fibronectin can be duplicated by small synthetic fragments of the molecule, Nature 309 (1984) 30), numerous materials have been RGD functionalized for academic studies or medical applications. This review gives an overview of RGD modified polymers, that have been used for cell adhesion, and provides information about technical aspects of RGD immobilization on polymers. The impacts of RGD peptide surface density, spatial arrangement as well as integrin affinity and selectivity on cell responses like adhesion and migration are discussed.
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Affiliation(s)
- Ulrich Hersel
- Institut für Organische Chemie und Biochemie, Technische Universität München, Lichtenbergstr. 4, D-85747, Garching, Germany
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