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Abstract
Mass spectrometry (MS) is a powerful technique for protein identification, quantification and characterization that is widely applied in biochemical studies, and which can provide data on the quantity, structural integrity and post-translational modifications of proteins. It is therefore a versatile and widely used analytic tool for quality control of biopharmaceuticals, especially in quantifying host-cell protein impurities, identifying post-translation modifications and structural characterization of biopharmaceutical proteins. Here, we summarize recent advances in MS-based analyses of these key quality attributes of the biopharmaceutical development and manufacturing processes.
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Comparison of the linking arm effect on the biological performance of a CD31 agonist directly grafted on L605 CoCr alloy by a plasma-based multistep strategy. Biointerphases 2019; 14:051009. [PMID: 31675791 DOI: 10.1116/1.5120902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Stents are cardiovascular implants deployed on atherosclerotic arteries that aid in reopening, sustaining, and avoiding their collapse. Nevertheless, postimplantation complications exist, and the risk of the renewal of the plaque subsists. Therefore, enhanced properties are mandatory requirements for clinics. For that purpose, a novel approach allowing the direct-grafting of bioactive molecules on cobalt-chromium devices (L605) has been developed. This original strategy involves the direct plasma functionalization of metallic surfaces with primary amines (-NH2). These groups act as anchor points to covalently graft biomolecules of interest, herein a peptide derived from CD31 (P23) with proendothelialization and antithrombotic properties. However, the biological activity of the grafted peptide could be impacted by its conformation. For this study, glutaric anhydride (GA), a short chain spacer, and polyethylene glycol (PEG) with antifouling properties were used as linking arms (LAs). The covalent grafting of the CD31 agonist on L605 by different LAs (GA-P23 and PEG-P23) was confirmed by XPS and ToF-SIMS analyses. The biological performance of these functionalized surfaces showed that, compared to the electropolished (EP) alloy, grafting the P23 with both LA increases adhesion and proliferation of endothelial cells (ECs) since day 1: EP = 68 ± 10%, GA-P23 = 101 ± 7%, and PEG-P23 = 106 ± 5% of cell viability. Moreover, ECs formed a complete monolayer at the surface, preventing clot formation (hemoglobin-free >80%). The potential of this plasma-based strategy for cardiovascular applications was confirmed by promoting a fast re-endothelialization, by improving the hemocompatibility of the alloy when coupled with the CD31 agonist and by its transfer onto commercial L605 stents, as confirmed by ToF-SIMS.
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Wang Y, Lan H, Yin T, Zhang X, Huang J, Fu H, Huang J, McGinty S, Gao H, Wang G, Wang Z. Covalent immobilization of biomolecules on stent materials through mussel adhesive protein coating to form biofunctional films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 106:110187. [PMID: 31753395 DOI: 10.1016/j.msec.2019.110187] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 10/22/2018] [Accepted: 09/09/2019] [Indexed: 11/16/2022]
Abstract
It is widely accepted that surface biofunctional modification may be an effective approach to improve biocompatibility and confer new bioactive properties on biomaterials. In this work, mussel adhesive protein (MAP) was applied as a coating on 316 L stainless steel substrates (316 L SS) and stents, and then either immobilized VEGF or CD34 antibody were added to create biofunctional films. The properties of the MAP coating were characterized by scanning electron microscope (SEM), atomic force microscope (AFM) and a water contact angle test. Universal tensile testing showed that the MAP coating has adequate adhesion strength on a 316 L stainless steel material surface. Subsequent cytotoxicity and hemolysis rate tests showed that the MAP coatings have good biocompatibility. Moreover, using N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride and N-hydroxysulfosussinimide (EDC/NHS) chemistry, VEGF and CD34 antibody were immobilized on the MAP coatings. The amount and immobilized yield of VEGF on the MAP coatings were analyzed by enzyme-linked immuno-assays (ELISA). Finally, an endothelial cells culture showed that the VEGF biofunctional film can promote the viability and proliferation of endothelial cells. An in vitro CD34+ cells capturing test also verified the bioactive properties of the CD34 antibody coated stents. These results showed that the MAP coatings allowed effective biomolecule immobilization, providing a promising platform for vascular device modification.
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Affiliation(s)
- Yi Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Hualin Lan
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Tieying Yin
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China.
| | - Xiaojuan Zhang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Junyang Huang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Haiyang Fu
- Laboratory of Biomaterials and Tissues Engineering, National Institutes for Food and Drug Control, Beijing, China
| | - Junli Huang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Sean McGinty
- Division of Biomedical Engineering, University of Glasgow, Glasgow, UK
| | - Hao Gao
- School of Mathematics and Statistics, University of Glasgow, Glasgow, UK
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China.
| | - Zhaoxu Wang
- Laboratory of Biomaterials and Tissues Engineering, National Institutes for Food and Drug Control, Beijing, China.
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Diaz-Rodriguez S, Chevallier P, Paternoster C, Montaño-Machado V, Noël C, Houssiau L, Mantovani D. Surface modification and direct plasma amination of L605 CoCr alloys: on the optimization of the oxide layer for application in cardiovascular implants. RSC Adv 2019; 9:2292-2301. [PMID: 35516133 PMCID: PMC9059826 DOI: 10.1039/c8ra08541b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 12/08/2018] [Indexed: 02/02/2023] Open
Abstract
Stents are cardiovascular devices used to treat atherosclerosis, and are deployed into narrowed arteries and implanted by expansion to reopen the biological lumen. Nevertheless, complications after implantation are still observed in 10-14% of the implantations. Therefore, functionalizing these devices with active molecules to improve the interfacial effects with the surrounding tissue strongly impacts their success. A plasma-based procedure to directly graft biomolecules to the surface of cobalt chromium alloys, without any polymeric coating, has been recently reported. Assuring the stability of the coating during plastic deformation generated during the implantation whilst avoiding the corrosion of the surface is crucial. This study explores different surface treatments to be used as a pre-treatment for this novel procedure. The effects of (i) electropolishing, (ii) thermal treatments, and (iii) the plasma immersion ion implantation of oxygen on the chemical composition, roughness, wettability and efficiency during the plasma-amination procedure whilst avoiding cracks after deformation, thus maintaining corrosion resistant behaviour, were investigated by XPS, AFM, ToF-SIMS imaging and depth profile, and WCA. Furthermore, the hemocompatibility of the surface and cell viability assays were also performed. Results showed that all of the treatments created a different surface chemical composition: EP mainly of chromium oxide, PIII with a layer of cobalt oxide and TT with a mixture of oxides, as observed by XPS and ToF-SIMS. Moreover, EP was the process that generated a surface with the highest efficiency to amination and the most corrosion resistance among the treatments, and it appeared as the most suitable pre-treatment for stent functionalization.
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Affiliation(s)
- Sergio Diaz-Rodriguez
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University PLT-1745G Québec Québec G1V 0A6 Canada +1 (418) 656-2131 ext 6270
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University PLT-1745G Québec Québec G1V 0A6 Canada +1 (418) 656-2131 ext 6270
| | - Carlo Paternoster
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University PLT-1745G Québec Québec G1V 0A6 Canada +1 (418) 656-2131 ext 6270
| | - Vanessa Montaño-Machado
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University PLT-1745G Québec Québec G1V 0A6 Canada +1 (418) 656-2131 ext 6270
| | - Céline Noël
- Laboratoire Interdisciplinaire de Spectroscopie Electronique, Namur Institute of Structured Matter, University of Namur 61 Rue de Bruxelles 5000 Namur Belgium
| | - Laurent Houssiau
- Laboratoire Interdisciplinaire de Spectroscopie Electronique, Namur Institute of Structured Matter, University of Namur 61 Rue de Bruxelles 5000 Namur Belgium
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University PLT-1745G Québec Québec G1V 0A6 Canada +1 (418) 656-2131 ext 6270
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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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Park S, Choi D, Jeong H, Heo J, Hong J. Drug Loading and Release Behavior Depending on the Induced Porosity of Chitosan/Cellulose Multilayer Nanofilms. Mol Pharm 2017; 14:3322-3330. [DOI: 10.1021/acs.molpharmaceut.7b00371] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sohyeon Park
- School of Chemical Engineering
and Material Science, Chung-Ang University, 84 Heukseok-ro,
Dongjak-gu, Seoul 06974, Republic of Korea
| | - Daheui Choi
- School of Chemical Engineering
and Material Science, Chung-Ang University, 84 Heukseok-ro,
Dongjak-gu, Seoul 06974, Republic of Korea
| | - Hyejoong Jeong
- School of Chemical Engineering
and Material Science, Chung-Ang University, 84 Heukseok-ro,
Dongjak-gu, Seoul 06974, Republic of Korea
| | - Jiwoong Heo
- School of Chemical Engineering
and Material Science, Chung-Ang University, 84 Heukseok-ro,
Dongjak-gu, Seoul 06974, Republic of Korea
| | - Jinkee Hong
- School of Chemical Engineering
and Material Science, Chung-Ang University, 84 Heukseok-ro,
Dongjak-gu, Seoul 06974, Republic of Korea
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Nabzdyk CS, Pradhan-Nabzdyk L, LoGerfo FW. RNAi therapy to the wall of arteries and veins: anatomical, physiologic, and pharmacological considerations. J Transl Med 2017; 15:164. [PMID: 28754174 PMCID: PMC5534068 DOI: 10.1186/s12967-017-1270-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/20/2017] [Indexed: 12/02/2022] Open
Abstract
Background Cardiovascular disease remains a major health care challenge. The knowledge about the underlying mechanisms of the respective vascular disease etiologies has greatly expanded over the last decades. This includes the contribution of microRNAs, endogenous non-coding RNA molecules, known to vastly influence gene expression. In addition, short interference RNA has been established as a mechanism to temporarily affect gene expression. This review discusses challenges relating to the design of a RNA interference therapy strategy for the modulation of vascular disease. Despite advances in medical and surgical therapies, atherosclerosis (ATH), aortic aneurysms (AA) are still associated with high morbidity and mortality. In addition, intimal hyperplasia (IH) remains a leading cause of late vein and prosthetic bypass graft failure. Pathomechanisms of all three entities include activation of endothelial cells (EC) and dedifferentiation of vascular smooth muscle cells (VSMC). RNA interference represents a promising technology that may be utilized to silence genes contributing to ATH, AA or IH. Successful RNAi delivery to the vessel wall faces multiple obstacles. These include the challenge of cell specific, targeted delivery of RNAi, anatomical barriers such as basal membrane, elastic laminae in arterial walls, multiple layers of VSMC, as well as adventitial tissues. Another major decision point is the route of delivery and potential methods of transfection. A plethora of transfection reagents and adjuncts have been described with varying efficacies and side effects. Timing and duration of RNAi therapy as well as target gene choice are further relevant aspects that need to be addressed in a temporo-spatial fashion. Conclusions While multiple preclinical studies reported encouraging results of RNAi delivery to the vascular wall, it remains to be seen if a single target can be sufficient to the achieve clinically desirable changes in the injured vascular wall in humans. It might be necessary to achieve simultaneous and/or sequential silencing of multiple, synergistically acting target genes. Some advances in cell specific RNAi delivery have been made, but a reliable vascular cell specific transfection strategy is still missing. Also, off-target effects of RNAi and unwanted effects of transfection agents on gene expression are challenges to be addressed. Close collaborative efforts between clinicians, geneticists, biologists, and chemical and medical engineers will be needed to provide tailored therapeutics for the various types of vascular diseases.
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Affiliation(s)
- Christoph S Nabzdyk
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.,Frank W. LoGerfo Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis Street, Boston, MA, 02215, USA
| | - Leena Pradhan-Nabzdyk
- Frank W. LoGerfo Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis Street, Boston, MA, 02215, USA.
| | - Frank W LoGerfo
- Frank W. LoGerfo Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis Street, Boston, MA, 02215, USA
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Knopf-Marques H, Pravda M, Wolfova L, Velebny V, Schaaf P, Vrana NE, Lavalle P. Hyaluronic Acid and Its Derivatives in Coating and Delivery Systems: Applications in Tissue Engineering, Regenerative Medicine and Immunomodulation. Adv Healthc Mater 2016; 5:2841-2855. [PMID: 27709832 DOI: 10.1002/adhm.201600316] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 06/11/2016] [Indexed: 12/28/2022]
Abstract
As an Extracellular Matrix (ECM) component, Hyaluronic acid (HA) plays a multi-faceted role in cell migration, proliferation and differentiation at micro level and system level events such as tissue water homeostasis. Among its biological functions, it is known to interact with cytokines and contribute to their retention in ECM microenvironment. In addition to its biological functions, it has advantageous physical properties which result in the industrial endeavors in the synthesis and extraction of HA for variety of applications ranging from medical to cosmetic. Recently, HA and its derivatives have been the focus of active research for applications in biomedical device coatings, drug delivery systems and in the form of scaffolds or cell-laden hydrogels for tissue engineering. A specific reason for the increase in use of HA based structures is their immunomodulatory and regeneration inducing capacities. In this context, this article reviews recent literature on modulation of the implantable biomaterial microenvironment by systems based on HA and its derivatives, particularly hydrogels and microscale coatings that are able to deliver cytokines in order to reduce the adverse immune reactions and promote tissue healing.
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Affiliation(s)
- Helena Knopf-Marques
- Inserm UMR 1121; 11 rue Humann 67085 Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; 3 rue Sainte Elisabeth 67000 Strasbourg France
| | - Martin Pravda
- Contipro Biotech S. R. O; Dolni Dobrouc 401 561 02 Dolni Dobrouc Czech Republic
| | - Lucie Wolfova
- Contipro Biotech S. R. O; Dolni Dobrouc 401 561 02 Dolni Dobrouc Czech Republic
| | - Vladimir Velebny
- Contipro Biotech S. R. O; Dolni Dobrouc 401 561 02 Dolni Dobrouc Czech Republic
| | - Pierre Schaaf
- Inserm UMR 1121; 11 rue Humann 67085 Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; 3 rue Sainte Elisabeth 67000 Strasbourg France
- Institut Charles Sadron; CNRS UPR 22; 23 rue du Lœss 67034 Strasbourg France
| | - Nihal Engin Vrana
- Inserm UMR 1121; 11 rue Humann 67085 Strasbourg France
- Protip Medical; 8 Place de l'Hôpital 67000 Strasbourg France
| | - Philippe Lavalle
- Inserm UMR 1121; 11 rue Humann 67085 Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; 3 rue Sainte Elisabeth 67000 Strasbourg France
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9
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Development of a novel dual PLGA and alginate coated drug-eluting stent for enhanced blood compatibility. Macromol Res 2016. [DOI: 10.1007/s13233-016-4130-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Roopmani P, Sethuraman S, Satheesh S, Maheswari Krishnan U. The metamorphosis of vascular stents: passive structures to smart devices. RSC Adv 2016. [DOI: 10.1039/c5ra19109b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The role of nanotechnology enabled techniques in the evolution of vascular stents.
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Affiliation(s)
- Purandhi Roopmani
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB)
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613 401
- India
| | - Swaminathan Sethuraman
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB)
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613 401
- India
| | - Santhosh Satheesh
- Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER)
- Department of Cardiology
- Pondicherry-605 006
- India
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB)
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613 401
- India
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Federico S, Pierce BF, Piluso S, Wischke C, Lendlein A, Neffe AT. Design von Decorin-basierten Peptiden, die an Kollagen I binden, und ihr Potenzial als Adhäsionssequenzen in Biomaterialien. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Federico S, Pierce BF, Piluso S, Wischke C, Lendlein A, Neffe AT. Design of Decorin-Based Peptides That Bind to Collagen I and their Potential as Adhesion Moieties in Biomaterials. Angew Chem Int Ed Engl 2015. [PMID: 26216251 DOI: 10.1002/anie.201505227] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Mimicking the binding epitopes of protein-protein interactions by using small peptides is important for generating modular biomimetic systems. A strategy is described for the design of such bioactive peptides without accessible structural data for the targeted interaction, and the effect of incorporating such adhesion peptides in complex biomaterial systems is demonstrated. The highly repetitive structure of decorin was analyzed to identify peptides that are representative of the inner and outer surface, and it was shown that only peptides based on the inner surface of decorin bind to collagen. The peptide with the highest binding affinity for collagen I, LHERHLNNN, served to slow down the diffusion of a conjugated dye in a collagen gel, while its dimer could physically crosslink collagen, thereby enhancing the elastic modulus of the gel by one order of magnitude. These results show the potential of the identified peptides for the design of biomaterials for applications in regenerative medicine.
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Affiliation(s)
- Stefania Federico
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Helmholtz-Zentrum Geesthacht, Kantstrasse 55, 14513 Teltow (Germany).,Institute of Chemistry, University of Potsdam, 14476 Potsdam-Golm (Germany)
| | - Benjamin F Pierce
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Helmholtz-Zentrum Geesthacht, Kantstrasse 55, 14513 Teltow (Germany)
| | - Susanna Piluso
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Helmholtz-Zentrum Geesthacht, Kantstrasse 55, 14513 Teltow (Germany).,Institute of Chemistry, University of Potsdam, 14476 Potsdam-Golm (Germany)
| | - Christian Wischke
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Helmholtz-Zentrum Geesthacht, Kantstrasse 55, 14513 Teltow (Germany)
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Helmholtz-Zentrum Geesthacht, Kantstrasse 55, 14513 Teltow (Germany).,Institute of Chemistry, University of Potsdam, 14476 Potsdam-Golm (Germany)
| | - Axel T Neffe
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Helmholtz-Zentrum Geesthacht, Kantstrasse 55, 14513 Teltow (Germany). .,Institute of Chemistry, University of Potsdam, 14476 Potsdam-Golm (Germany).
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Monge C, Almodóvar J, Boudou T, Picart C. Spatio-Temporal Control of LbL Films for Biomedical Applications: From 2D to 3D. Adv Healthc Mater 2015; 4:811-30. [PMID: 25627563 PMCID: PMC4540079 DOI: 10.1002/adhm.201400715] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 12/19/2014] [Indexed: 12/15/2022]
Abstract
Introduced in the '90s by Prof. Moehwald, Lvov, and Decher, the layer-by-layer (LbL) assembly of polyelectrolytes has become a popular technique to engineer various types of objects such as films, capsules and free standing membranes, with an unprecedented control at the nanometer and micrometer scales. The LbL technique allows to engineer biofunctional surface coatings, which may be dedicated to biomedical applications in vivo but also to fundamental studies and diagnosis in vitro. Initially mostly developed as 2D coatings and hollow capsules, the range of complex objects created by the LbL technique has greatly expanded in the past 10 years. In this Review, the aim is to highlight the recent progress in the field of LbL films for biomedical applications and to discuss the various ways to spatially and temporally control the biochemical and mechanical properties of multilayers. In particular, three major developments of LbL films are discussed: 1) the new methods and templates to engineer LbL films and control cellular processes from adhesion to differentiation, 2) the major ways to achieve temporal control by chemical, biological and physical triggers and, 3) the combinations of LbL technique, cells and scaffolds for repairing 3D tissues, including cardio-vascular devices, bone implants and neuro-prosthetic devices.
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Affiliation(s)
- Claire Monge
- CNRS, UMR 5628, LMGP, 3 parvis Louis Néel, F-38016, Grenoble, France; Université de Grenoble Alpes, Grenoble Institute of Technology, 3 parvis Louis Néel, F-38016, Grenoble, France
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Wang L, Ren KF, Wang HB, Wang Y, Ji J. pH-sensitive controlled release of doxorubicin from polyelectrolyte multilayers. Colloids Surf B Biointerfaces 2015; 125:127-33. [DOI: 10.1016/j.colsurfb.2014.11.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 10/31/2014] [Accepted: 11/13/2014] [Indexed: 11/27/2022]
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15
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Wang Y, Chen S, Pan Y, Gao J, Tang D, Kong D, Wang S. Rapid in situ endothelialization of a small diameter vascular graft with catalytic nitric oxide generation and promoted endothelial cell adhesion. J Mater Chem B 2015; 3:9212-9222. [DOI: 10.1039/c5tb02080h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Rapidin situendothelialization of a small diameter vascular graft with catalytic nitric oxide generation and promoted endothelial cell adhesion.
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Affiliation(s)
- Yuanyuan Wang
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials for Ministry of Education
- College of Life Sciences
- Nankai University
- Tianjin 300071
| | - Siyuan Chen
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials for Ministry of Education
- College of Life Sciences
- Nankai University
- Tianjin 300071
| | - Yiwa Pan
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials for Ministry of Education
- College of Life Sciences
- Nankai University
- Tianjin 300071
| | - Jingchen Gao
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials for Ministry of Education
- College of Life Sciences
- Nankai University
- Tianjin 300071
| | - Di Tang
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials for Ministry of Education
- College of Life Sciences
- Nankai University
- Tianjin 300071
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials for Ministry of Education
- College of Life Sciences
- Nankai University
- Tianjin 300071
| | - Shufang Wang
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials for Ministry of Education
- College of Life Sciences
- Nankai University
- Tianjin 300071
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16
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Fejerskov B, Jensen NBS, Teo BM, Städler B, Zelikin AN. Biocatalytic polymer coatings: on-demand drug synthesis and localized therapeutic effect under dynamic cell culture conditions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1314-1324. [PMID: 24376172 DOI: 10.1002/smll.201303101] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 11/05/2013] [Indexed: 06/03/2023]
Abstract
Biocatalytic surface coatings are prepared herein for localized synthesis of drugs and their on-demand, site-specific delivery to adhering cells. This novel approach is based on the incorporation of an enzyme into multilayered polymer coatings to accomplish enzyme-prodrug therapy (EPT). The build-up of enzyme-containing multilayered coatings is characterized and correlations are drawn between the multilayer film assembly conditions and the enzymatic activity of the resulting coatings. Therapeutic effect elicited by the substrate mediated EPT (SMEPT) strategy is investigated using a prodrug for an anticancer agent, SN-38. The performance of biocatalytic coatings under flow conditions is investigated and it is demonstrated that EPT allows synthesizing the drugs on-demand, at the time desired and in a controllable amount to suit particular applications. Finally, using cells cultured in sequentially connected flow chambers, it is demonstrated that SMEPT affords a site-specific drug delivery, that is, exerts a higher therapeutic effect in cells adhering directly to the biocatalytic coatings than in the cells cultured "downstream". Taken together, these data illustrate biomedical opportunities made possible by engineering tools of EPT into multilayered polymer coatings and present a novel, highly versatile tool for surface mediated drug delivery.
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Affiliation(s)
- Betina Fejerskov
- Department of Chemistry, Aarhus University, Aarhus, 8000, Denmark
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17
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Vergnol G, Renard E, Haroun F, Guerin P, Seron A, Bureau C, Loirand G, Langlois V. Electrografting of a biodegradable layer as a primer adhesion coating onto a metallic stent: in vitro and in vivo evaluations. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:2729-2739. [PMID: 23904056 DOI: 10.1007/s10856-013-5015-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 07/19/2013] [Indexed: 06/02/2023]
Abstract
Drug-eluting stents have been developed to reduce the risk of restenosis after angioplasty. To facilitate the adhesion of a poly(lactic acid) (PLA) overlayer loaded with rapamycin (20 wt%), a biodegradable macromonomer based on poly(lactic acid) (HEMA-PLA) was grafted onto the metallic stent by electrografting in a one-step reaction involving the immobilization of aryl diazonium onto the metal followed by an in situ surface electro-polymerization. The HEMA-PLA coating was chemically characterized. Mechanical performance during stent expansion was tested. Morphology examinations showed a strong adhesion of PLA topcoat in the presence of the electrografted layer. Biocompatibility and degradation of the coating were studied in vitro and in vivo in rabbit iliac arteries. These 28 days implantations resulted in a minimal inflammatory process with a partial degradation of the coating. These results suggest that this kind of anchoring of a biodegradable layer shows great potential for drug-eluting stents.
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Affiliation(s)
- Gwenaelle Vergnol
- Equipe Systèmes Polymères Complexes, Institut de Chimie et des Matériaux Paris-Est-UMR 7182, CNRS, Université Paris-Est Créteil Val-de-Marne, 2 rue Henri Dunant, 94320, Thiais, France,
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18
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Otvos RA, Heus F, Vonk FJ, Halff J, Bruyneel B, Paliukhovich I, Smit AB, Niessen WM, Kool J. Analytical workflow for rapid screening and purification of bioactives from venom proteomes. Toxicon 2013; 76:270-81. [DOI: 10.1016/j.toxicon.2013.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/07/2013] [Accepted: 10/08/2013] [Indexed: 01/15/2023]
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19
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Fishbein I, Forbes SP, Chorny M, Connolly JM, Adamo RF, Corrales RA, Alferiev IS, Levy RJ. Adenoviral vector tethering to metal surfaces via hydrolyzable cross-linkers for the modulation of vector release and transduction. Biomaterials 2013; 34:6938-48. [PMID: 23777912 DOI: 10.1016/j.biomaterials.2013.05.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 05/23/2013] [Indexed: 01/16/2023]
Abstract
The use of arterial stents and other medical implants as a delivery platform for surface immobilized gene vectors allows for safe and efficient localized expression of therapeutic transgenes. In this study we investigate the use of hydrolyzable cross-linkers with distinct kinetics of hydrolysis for delivery of gene vectors from polyallylamine bisphosphonate-modified metal surfaces. Three cross-linkers with the estimated t1/2 of ester bonds hydrolysis of 5, 12 and 50 days demonstrated a cumulative 20%, 39% and 45% vector release, respectively, after 30 days exposure to physiological buffer at 37 °C. Transgene expression in endothelial and smooth muscles cells transduced with substrate immobilized adenovirus resulted in significantly different expression profiles for each individual cross-linker. Furthermore, immobilization of adenoviral vectors effectively extended their transduction effectiveness beyond the initial phase of release. Transgene expression driven by adenovirus-tethered stents in rat carotid arteries demonstrated that a faster rate of cross-linker hydrolysis resulted in higher expression levels at day 1, which declined by day 8 after stent implantation, while inversely, slower hydrolysis was associated with increased arterial expression at day 8 in comparison with day 1. In conclusion, adjustable release of transduction-competent adenoviral vectors from metallic surfaces can be achieved, both in vitro and in vivo, through surface immobilization of adenoviral vectors using hydrolyzable cross-linkers with structure-specific release kinetics.
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Affiliation(s)
- Ilia Fishbein
- Division of Cardiology, The Children's Hospital of Philadelphia, Abramson Research Center, and Department of Pediatrics, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA 19104, USA.
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20
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Takahashi H, Okano T. Intelligent Surfaces for Cell and Tissue Delivery. SMART MATERIALS FOR DRUG DELIVERY 2013. [DOI: 10.1039/9781849734318-00290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Cell transplantation remains a powerful approach for promising numerous biomedical applications to promote tissue regeneration. Therefore, smart delivery systems of therapeutic cells, as well as therapeutic oligonucleotides and proteins, are required. Although cells have been conventionally delivered by direct injection to target sites, a number of clinical studies showed a limitation due to poor cell retention and survival at the sites, resulting in insufficient effect on tissue/organ repair. Therefore, at present, numerous delivery strategies have been developed, and a variety of polymeric materials play important roles. For example, encapsulation in semi-permeable membrane made from biocompatible polymers (e.g. alginate-poly(l-lysine)-alginate) allows xenograft islets to be delivered in vivo without immune suppression. With progress in tissue engineering, scaffold-based cell/tissue delivery reached the mainstream for regenerating damaged tissues. Various kinds of scaffolds have been fabricated from natural and synthetic polymers, such as collagen or poly(l-lactic-co-glycolic acid), and allowed to provide appropriate nutritional conditions and spatial organization for cell growth. Whereas these scaffolds produce reliable architectures to design cell/tissue delivery, scaffold-free cell/tissue delivery also has opened up a new class technology in the field of regenerative medicine. Thermo-responsive poly(N-isopropylacrylamide)-grafted surfaces allow one to fabricate tissue-like cell monolayers, “cell sheets”, and deliver the cell-dense tissue with associated extra-cellular matrix (ECM) to damaged sites without scaffold implantation. The chapter focuses on unique cell/tissue delivery techniques using the intelligent surfaces. This technology has already been applied to human clinical studies for tissue regeneration, and microfabricated thermo-responsive surfaces are further developing for delivering more complex tissue.
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Affiliation(s)
- Hironobu Takahashi
- Institute of Advanced Biomedical Engineering and Science Tokyo Women's Medical University (TWIns), 8-1 Kawada-cho, Shinjuku-ku Tokyo 162-8666, Japan
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science Tokyo Women's Medical University (TWIns), 8-1 Kawada-cho, Shinjuku-ku Tokyo 162-8666, Japan
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21
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Surface engineering of cardiovascular stent with endothelial cell selectivity for in vivo re-endothelialisation. Biomaterials 2013; 34:2588-99. [DOI: 10.1016/j.biomaterials.2012.12.036] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 12/29/2012] [Indexed: 01/26/2023]
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22
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Ganly S, Hynes SO, Sharif F, Aied A, Barron V, McCullagh K, McMahon J, McHugh P, Crowley J, Wang W, O'Brien T, Greiser U. Liposomal surface coatings of metal stents for efficient non-viral gene delivery to the injured vasculature. J Control Release 2013; 167:109-19. [DOI: 10.1016/j.jconrel.2013.01.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 01/14/2013] [Accepted: 01/31/2013] [Indexed: 11/16/2022]
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Kang CK, Lim WH, Kyeong S, Choe WS, Kim HS, Jun BH, Lee YS. Fabrication of biofunctional stents with endothelial progenitor cell specificity for vascular re-endothelialization. Colloids Surf B Biointerfaces 2013; 102:744-51. [DOI: 10.1016/j.colsurfb.2012.09.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 09/05/2012] [Indexed: 02/01/2023]
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24
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Fejerskov B, Smith AAA, Jensen BEB, Hussmann T, Zelikin AN. Bioresorbable surface-adhered enzymatic microreactors based on physical hydrogels of poly(vinyl alcohol). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:344-354. [PMID: 23210621 DOI: 10.1021/la3040903] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Hydrogel biomaterials based on poly(vinyl alcohol), PVA, have an extensive history of biomedical applications, yet in their current form suffer from significant shortcomings, such as a lack of mechanism of biodegradation and poor opportunities in controlled drug release. We investigate physical hydrogels of PVA as surface-adhered materials and present biodegradable matrices equipped with innovative tools in substrate-mediated drug release. Toward the final goal, PVA chains with narrow polydispersities (1.1-1.2) and molecular weights of 5, 10, and 28 kDa are synthesized via controlled radical polymerization (RAFT). These molecular weights are shown to be suitably high to afford robust hydrogel matrices and at the same time suitably low to allow gradual erosion of the hydrogels with kinetics of degradation controlled via polymer macromolecular characteristics. For opportunities in controlled drug release, hydrogels are equipped with enzymatic cargo to achieve an in situ conversion of externally added prodrug into a final product, thus giving rise to surface-adhered enzymatic microreactors. Hydrogel-mediated enzymatic activity was investigated as a function of polymer molecular weight and concentration of solution taken for assembly of hydrogels. Taken together, we present, to the best of our knowledge, the first example of bioresorbable physical hydrogel based on PVA with engineered opportunities in substrate-mediated enzymatic activity and envisioned utility in surface-mediated drug delivery and tissue engineering.
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Kim CY, XU LIXING, Lee EH, Choa YH. Magnetic Silicone Composites with Uniform Nanoparticle Dispersion as a Biomedical Stent Coating for Hyperthermia. ADVANCES IN POLYMER TECHNOLOGY 2012. [DOI: 10.1002/adv.21314] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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Aytar BS, Prausnitz MR, Lynn DM. Rapid release of plasmid DNA from surfaces coated with polyelectrolyte multilayers promoted by the application of electrochemical potentials. ACS APPLIED MATERIALS & INTERFACES 2012; 4:2726-34. [PMID: 22551230 PMCID: PMC3359390 DOI: 10.1021/am3003632] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report an approach to the rapid release of DNA based on the application of electrochemical potentials to surfaces coated with polyelectrolyte-based thin films. We fabricated multilayered polyelectrolyte films (or "polyelectrolyte multilayers", PEMs) using plasmid DNA and a model hydrolytically degradable cationic poly(β-amino ester) (polymer 1) on stainless steel substrates using a layer-by-layer approach. The application of continuous reduction potentials in the range of -1.1 to -0.7 V (vs a Ag/AgCl electrode) to film-coated electrodes in PBS at 37 °C resulted in the complete release of DNA over a period of 1-2 min. Film-coated electrodes incubated under identical conditions in the absence of applied potentials required 1-2 days for complete release. Control over the magnitude of the applied potential provided control over the rate at which DNA was released. The results of these and additional physical characterization experiments are consistent with a mechanism of film disruption that is promoted by local increases in pH at the film/electrode interface (resulting from electrochemical reduction of water or dissolved oxygen) that disrupt ionic interactions in these materials. The results of cell-based experiments demonstrated that DNA was released in a form that remains intact and able to promote transgene expression in mammalian cells. Finally, we demonstrate that short-term (i.e., non-continuous) electrochemical treatments can also be used to promote faster film erosion (e.g., over 1-2 h) once the potential is removed. Past studies demonstrate that PEMs fabricated using polymer 1 can promote surface-mediated transfection of cells and tissues in vitro and in vivo. With further development, the electrochemical approaches reported here could thus provide new methods for the rapid, triggered, or spatially patterned transfer of DNA (or other agents) from surfaces of interest in a variety of fundamental and applied contexts.
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Affiliation(s)
- Burcu S Aytar
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, USA
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27
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Vergnol G, Sow H, Renard E, Haroun F, Langlois V. Multilayer approach for tuning the drug delivery from poly(3-hydroxyalkanaoate)s coatings. REACT FUNCT POLYM 2012. [DOI: 10.1016/j.reactfunctpolym.2012.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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28
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Flessner RM, Jewell CM, Anderson DG, Lynn DM. Degradable polyelectrolyte multilayers that promote the release of siRNA. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:7868-76. [PMID: 21574582 PMCID: PMC3115451 DOI: 10.1021/la200815t] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We report an approach to the design of degradable polyelectrolyte-based films for the controlled release of siRNA from surfaces. Our approach is based on stepwise, layer-by-layer assembly of multilayered polyelectrolyte films (or "polyelectrolyte multilayers", PEMs) using siRNA and a hydrolytically degradable poly(β-amino ester) (polymer 1). Fabrication of films using siRNA sequences for green fluorescent protein (GFP) or firefly luciferase resulted in linear growth of ultrathin films (∼50 nm thick) that promoted the surface-mediated release of siRNA upon incubation in physiologically relevant media. Physicochemical characterization of these siRNA-containing films revealed large differences in film growth profiles, physical erosion profiles, and siRNA release profiles as compared to PEMs fabricated using polymer 1 and larger plasmid DNA constructs. For example, whereas films fabricated using plasmid DNA erode gradually and release DNA over a period of ∼48 h, films fabricated using siRNA released ∼65% of incorporated siRNA within the first hour of incubation, prior to the onset of any observed film erosion. This initial burst of release was followed by a second, slower phase of release (accompanied by gradual film erosion) over the next 23 h. These differences in release profiles and other behaviors likely result, at least in part, from large differences in the sizes of siRNA and plasmid DNA. Finally, we demonstrate that the siRNA in these films is released in a form that remains intact, functional, and able to silence targeted protein expression upon administration to mammalian cells in vitro. The results of this investigation provide a platform for the design of thin films and coatings that could be used to localize the release of siRNA from surfaces in a variety of fundamental and applied contexts (e.g., for development of new research tools or approaches to delivery from film-coated implants and other devices).
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Affiliation(s)
- Ryan M Flessner
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, USA
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29
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Mourtas S, Kastellorizios M, Klepetsanis P, Farsari E, Amanatides E, Mataras D, Pistillo B, Favia P, Sardella E, d’Agostino R, Antimisiaris S. Covalent immobilization of liposomes on plasma functionalized metallic surfaces. Colloids Surf B Biointerfaces 2011; 84:214-20. [DOI: 10.1016/j.colsurfb.2011.01.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Accepted: 01/04/2011] [Indexed: 10/18/2022]
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30
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Indolfi L, Causa F, Giovino C, Ungaro F, Quaglia F, Netti PA. Microsphere-integrated drug-eluting stents: PLGA microsphere integration in hydrogel coating for local and prolonged delivery of hydrophilic antirestenosis agents. J Biomed Mater Res A 2011; 97:201-11. [DOI: 10.1002/jbm.a.33039] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2010] [Revised: 11/15/2010] [Accepted: 12/03/2010] [Indexed: 11/11/2022]
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31
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Sorragi CDL, Shishido SM, Lemos ME, Marcondes S, Antunes E, Krieger MH. In vitro evaluation of the safe margin, antithrombotic and antiproliferative actions for the treatment of restenosis: Nitric oxide donor and polymers. Cell Biochem Funct 2011; 29:207-14. [PMID: 21374644 DOI: 10.1002/cbf.1738] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 01/18/2011] [Accepted: 01/19/2011] [Indexed: 01/14/2023]
Abstract
Drug-eluting stents (DES) were developed to combat the problem of in-stent restenosis, and evaluating the biological activity from DES systems is critical for its safety and efficacy. To test the cytotoxicity of nitric oxide (NO) donor-containing polymers for their potential use in DES applications, S-nitrosoglutathione (GSNO) or in combination with poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVP) in an aqueous polymeric solution (PVA/PVP/GSNO) was investigated using Balb/c 3T3 and Rabbit arterial smooth muscle (RASM) cells. The sensitivity of 3T3 cells to the cytotoxicity effects induced by GSNO was higher than that of RASM cells, while RASM cells were more susceptible to alterations in membrane permeability. Cell growth assays showed that GSNO and PVA/PVP/GSNO induced antiproliferative effects in RASM cells. Moreover, the presence of polymers can reduce the cytotoxicity and enhance the antiproliferative effects of GSNO. Dose-dependent inhibition of platelet aggregation was similar for both PVA/PVP/GSNO (EC50 of 3.4 ± 2.3 µM) and GSNO (EC50 of 2.8 ± 1.1 µM) solutions. Platelet adhesion assays showed that the inhibition caused by GSNO (EC50 of 5.0 mM) was dependent on the presence of plasma. These results demonstrate that the methodology adopted here is suitable to establish safety margins and evaluate the antithrombotic potential and antiproliferative effects of NO-eluting biomaterials and polymeric solutions for the new cardiovascular devices, and also to emphasize the importance of using more specific cell lines in these evaluations.
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Affiliation(s)
- Cláudia de Lourdes Sorragi
- Laboratory of Cardiovascula, Department of Anatomy, Cellular Biology and Physiology, State University of Campinas, Biology Institute, SP, Brasil
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32
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Wei Y, Ji Y, Xiao L, Lin Q, Ji J. Different complex surfaces of polyethyleneglycol (PEG) and REDV ligand to enhance the endothelial cells selectivity over smooth muscle cells. Colloids Surf B Biointerfaces 2011; 84:369-78. [PMID: 21333506 DOI: 10.1016/j.colsurfb.2011.01.028] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 11/17/2010] [Accepted: 01/19/2011] [Indexed: 11/19/2022]
Abstract
Arg-Glu-Asp-Val (REDV) peptide with endothelial cells (ECs) selectivity was immobilized onto PEG based polymeric coating via the active p-nitrophenyloxycarbonyl group. The adhesion and proliferation of human umbilical vein endothelial cells (HUVECs) and human aortic smooth muscle cells (HASMCs) onto surface modified either by REDV end-tethered polyethylene glycol (PEG) or by the complex of free PEG and REDV were investigated to understand the synergic action of nonspecific resistance of PEG and specific recognitions of REDV. Cell culture results indicated that the surfaces end tethered by REDV peptide via PEG "spacer" (n=1, 6, 10) exhibited slight EC selectivity and showed small difference between different lengths of PEG chain. Both separate-culture and co-culture of HUVECs and HASMCs indicated that the introducing of free PEG into REDV tethered surface inhibited HASMCs adhesion significantly and remained a high level of HUVECs growth. Furthermore, the surface with short free PEG chain (n=6) was much more effective to enhance ECs selectivity than long EG chain (n=23). The combination of nonspecific resistance of short free PEG and the ECs selectivity of REDV peptide presents much better ability to enhance the competitive adhesion of HUVECs over HASMCs.
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Affiliation(s)
- Yu Wei
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
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33
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Meyers SR, Kenan DJ, Khoo X, Grinstaff MW. Bioactive stent surface coating that promotes endothelialization while preventing platelet adhesion. Biomacromolecules 2011; 12:533-9. [PMID: 21218765 DOI: 10.1021/bm101212k] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A bifunctional peptide coating was designed, synthesized, and evaluated as a potential pro-healing stent coating. The bifunctional peptide consisted of a short 28-mer sequence that on the N-terminus has a motif with affinity for polystyrene binding and at the C-terminus has a motif that was shown to bind selectively human endothelial cells but not platelets. Results showed that the selective coating, a polystyrene-binding peptide terminated in RRETAWA (FFSFFFPASAWGSSGSSGK(biotin)CRRETAWAC), bound endothelial cells quantitatively as well as the common RGD motif, but unlike RGD, it did not show any preference for platelet adherence. Follow-up work examining the difference in cell line selectivity between endothelial cells, whose binding should be encouraged, and smooth muscle cells, whose binding should be deprecated in a stenting application, did identify a temporal preference of the RRETAWA-terminated peptide coating for endothelial cells. However, the in vivo implications of this apparent selectivity need to be examined in more detail before definitive conclusions can be drawn. The positive in vitro results encourage the continued development of other novel coatings that mimic biological structures, signaling capabilities, or both to direct cellular processes on the surface of synthetic materials.
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Affiliation(s)
- Steven R Meyers
- Department of Biomedical Engineering, Metcalf Center for Science and Engineering, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
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34
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Lin ZT, Song K, Bin JP, Liao YL, Jiang GB. Characterization of polymer micelles with hemocompatibility based on N-succinyl-chitosan grafting with long chain hydrophobic groups and loading aspirin. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm13208c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sun B, Lynn DM. Release of DNA from polyelectrolyte multilayers fabricated using 'charge-shifting' cationic polymers: tunable temporal control and sequential, multi-agent release. J Control Release 2010; 148:91-100. [PMID: 20678530 PMCID: PMC3005143 DOI: 10.1016/j.jconrel.2010.07.112] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Revised: 07/11/2010] [Accepted: 07/18/2010] [Indexed: 01/25/2023]
Abstract
We report an approach to the design of multilayered polyelectrolyte thin films (or 'polyelectrolyte multilayers', PEMs) that can be used to provide tunable control over the release of plasmid DNA (or multiple different DNA constructs) from film-coated surfaces. Our approach is based upon methods for the layer-by-layer assembly of DNA-containing thin films, and exploits the properties of a new class of cationic 'charge-shifting' polymers (amine functionalized polymers that undergo gradual changes in net charge upon side chain ester hydrolysis) to provide control over the rates at which these films erode and release DNA. We synthesized two 'charge-shifting' polymers (polymers 1 and 2) containing different side chain structures by ring-opening reactions of poly(2-alkenyl azlactone)s with two different tertiary amine functionalized alcohols (3-dimethylamino-1-propanol and 2-dimethylaminoethanol, respectively). Subsequent characterization revealed large changes in the rates of side chain ester hydrolysis for these two polymers; whereas the half-life for the hydrolysis of the esters in polymer 1 was ~200 days, the half-life for polymer 2 was ~6 days. We demonstrate that these large differences in side chain hydrolysis make possible the design of PEMs that erode and promote the surface-mediated release of DNA either rapidly (e.g., over ~3 days for films fabricated using polymer 2) or slowly (e.g., over ~1 month for films fabricated using polymer 1). We demonstrate further that it is possible to design films with release profiles that are intermediate to these two extremes by fabricating films using solutions containing different mixtures of these two polymers. This approach can thus expand the usefulness of these two polymers and achieve a broader range of DNA release profiles without the need to synthesize polymers with new structures or properties. Finally, we demonstrate that polymers 1 and 2 can be used to fabricate multilayered films with hierarchical structures that promote the sequential release of two different DNA constructs with separate and distinct release profiles (e.g., the release of a first construct over a period of ~3 days, followed by the sustained release of a second for a period of ~70 days). With further development, this approach could contribute to the design of functional thin films and surface coatings that provide sophisticated control over the timing and the order of the release of two or more DNA constructs (or other agents) of interest in a range of biomedical contexts.
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Affiliation(s)
- Bin Sun
- Department of Chemistry, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, United States
| | - David M Lynn
- Department of Chemistry, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, United States; Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, United States.
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36
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Zelikin AN. Drug releasing polymer thin films: new era of surface-mediated drug delivery. ACS NANO 2010; 4:2494-2509. [PMID: 20423067 DOI: 10.1021/nn100634r] [Citation(s) in RCA: 204] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Polymer films and coatings are among the popular and most successful tools to modulate surface properties of biomaterials, specifically tissue responses and fouling behavior. Over the past decade, a novel opportunity has been widely investigated, namely utility of surface coatings in surface-mediated drug delivery. In these applications, deposited polymer films act as both a coating to modulate surface properties and a reservoir for active therapeutic cargo. The field has recently accelerated beyond the proof-of-concept reports toward delivering practical solutions and established technologies for biomedical applications. This review briefly summarizes the recent successes of polymer thin films, specifically those constructed by sequential polymer deposition technique, in surface-mediated drug delivery.
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Affiliation(s)
- Alexander N Zelikin
- Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus C 8000, Denmark.
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Langlois V, Renard E, Vergnol G, Guérin P, Loirand G, Haroun F, Seron A. Élaboration de nouveaux systèmes biodégradables électrogreffables pour stents endovasculaires métalliques. Ing Rech Biomed 2010. [DOI: 10.1016/j.irbm.2010.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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The effects of vinblastine on smooth muscle cells in vitro: evaluation of a therapeutic window for the treatment of restenosis. J Cardiovasc Pharmacol 2010; 55:399-407. [PMID: 20147845 DOI: 10.1097/fjc.0b013e3181d3dcea] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The development of drug-eluting stents (DES) to combat the problem of in-stent restenosis has revolutionized interventional cardiology. However, concerns have emerged about the risk of late angiographic stent thromboses associated with DES. The evaluation and width of the therapeutic window of a particular DES system is of huge importance to its safety and efficacy. In this study, the effects of vinblastine, an antimitotic drug, on smooth muscle cells in vitro is analyzed. The change in levels of proliferation, activity, migration, and viability in human coronary artery smooth muscle cells was measured at a range of concentrations and over a number of time points. These findings were then compared with those of a previous study on the effects of vinblastine on endothelial cells, and an optimum working concentration range was evaluated. This study suggests that the concentration of vinblastine most appropriate in restenosis treatment would be between 0.1 and 1 nM. At this concentration, vinblastine exerts a distinct effect on smooth muscle cell proliferation without detrimental effects on endothelial cell viability. It was also found that vinblastine affects certain cellular activities such as migration in a threshold-independent manner, suggesting that very low doses could be active against the processes of restenosis.
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Im HY, Kim J, Sah H. Another Paradigm in Solvent Extraction-Based Microencapsulation Technologies. Biomacromolecules 2010; 11:776-86. [DOI: 10.1021/bm9013952] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hye-Yeum Im
- College of Pharmacy, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-gu, Seoul 120-750, Republic of Korea
| | - Jayoung Kim
- College of Pharmacy, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-gu, Seoul 120-750, Republic of Korea
| | - Hongkee Sah
- College of Pharmacy, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-gu, Seoul 120-750, Republic of Korea
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Kim TG, Lee Y, Park TG. Controlled gene-eluting metal stent fabricated by bio-inspired surface modification with hyaluronic acid and deposition of DNA/PEI polyplexes. Int J Pharm 2010; 384:181-8. [DOI: 10.1016/j.ijpharm.2009.09.042] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2009] [Accepted: 09/22/2009] [Indexed: 10/20/2022]
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41
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Hanefeld P, Agarwal S, Kumar R, Greiner A. In Vitro Study of Dexamethasone Release From Poly(p
-xylylene) Films. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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42
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Ghonaim HM, Li S, Blagbrough IS. N 1,N 12 -Diacyl Spermines: SAR Studies on Non-viral Lipopolyamine Vectors for Plasmid DNA and siRNA Formulation. Pharm Res 2009; 27:17-29. [DOI: 10.1007/s11095-008-9764-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Accepted: 10/21/2008] [Indexed: 02/06/2023]
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Wang X, Ji J. Postdiffusion of oligo-peptide within exponential growth multilayer films for localized peptide delivery. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:11664-11671. [PMID: 19736942 DOI: 10.1021/la9013575] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The multilayers of poly(L-lysine) (PLL) and hyaluronic acid (HA) were constructed by alternating deposition of PLL at high pH and HA at low pH. The exponential growth of the multilayer was proved to be amplified by increasing the pH difference between the two deposition solutions. The exponential growth multilayers of PLL/HA assembled at different pH were utilized as reservoirs for loading a trans-activating transcriptional factor (TAT) peptide. The confocal laser scanning microscopy (CLSM) results indicated that the FITC-labeled TAT could diffuse throughout the exponentially growing PLL/HA film. The amount of peptide embedded within multilayer could be adjusted by both multilayer assembly pH and the TAT loading pH. Compared with (PLL/HA 6.5/6.5)5 multilayer (PLL/HA a/b means that the multilayer film was constructed by using PLL at pH a and HA at pH b), the (PLL/HA 9.5/2.9)5 film can be loaded with more TAT peptide at the same loading pH 6.5. The excess of positively charged TAT peptide within (PLL/HA 9.5/2.9)5 film could not only be ascribed to its extraordinary thickness but also be attributed to its uncompensated negative charge density enhanced by the pH difference between film buildup and peptide loading process. Increasing of the TAT loading pH from 6.5 to 9.5, which increases the pH difference between multilayer assembly and peptide loading process, enhances the uncompensated charge density within (PLL/HA 9.5/2.9)5 film and elevates the peptide density from 13.8 to 25.0 microg/cm2. Compared with direct layer-by-layer assembly of TAT and HA, the postdiffusion of TAT into (PLL/HA 9.5/2.9)5 film was loaded much more peptide. The postdiffusion of peptide into a rapid growth multilayer can be more favorable to load and sustainedly release functional oligo-peptide. The cell culture results indicated that the TAT embedded within the film maintained the ability to traverse across the Hep G2 cell membrane. The functionalized (PLL/HA 9.5/2.9)5 TAT 9.5 film was more efficient than the equivalent amount of free TAT peptide in the TAT uptake test. The postdiffusion of oligo-peptide within an exponential growth multilayer can serve as an effective approach for localized and sustained peptide delivery.
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Affiliation(s)
- Xuefei Wang
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Zhejiang University, Hangzhou 310027, China
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San Juan A, Bala M, Hlawaty H, Portes P, Vranckx R, Feldman LJ, Letourneur D. Development of a Functionalized Polymer for Stent Coating in the Arterial Delivery of Small Interfering RNA. Biomacromolecules 2009; 10:3074-80. [DOI: 10.1021/bm900740g] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Aurélie San Juan
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris 7, Paris, France, and Université Paris 13, Villetaneuse, France, Laboratoire d’Ingénierie des Matériaux et des Hautes Pressions (CNRS UPR 1311), Université Paris 13, Villetaneuse, France, and AP-HP, Hôpital Bichat, Département de Cardiologie, Paris, France
| | - Madiha Bala
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris 7, Paris, France, and Université Paris 13, Villetaneuse, France, Laboratoire d’Ingénierie des Matériaux et des Hautes Pressions (CNRS UPR 1311), Université Paris 13, Villetaneuse, France, and AP-HP, Hôpital Bichat, Département de Cardiologie, Paris, France
| | - Hanna Hlawaty
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris 7, Paris, France, and Université Paris 13, Villetaneuse, France, Laboratoire d’Ingénierie des Matériaux et des Hautes Pressions (CNRS UPR 1311), Université Paris 13, Villetaneuse, France, and AP-HP, Hôpital Bichat, Département de Cardiologie, Paris, France
| | - Patrick Portes
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris 7, Paris, France, and Université Paris 13, Villetaneuse, France, Laboratoire d’Ingénierie des Matériaux et des Hautes Pressions (CNRS UPR 1311), Université Paris 13, Villetaneuse, France, and AP-HP, Hôpital Bichat, Département de Cardiologie, Paris, France
| | - Roger Vranckx
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris 7, Paris, France, and Université Paris 13, Villetaneuse, France, Laboratoire d’Ingénierie des Matériaux et des Hautes Pressions (CNRS UPR 1311), Université Paris 13, Villetaneuse, France, and AP-HP, Hôpital Bichat, Département de Cardiologie, Paris, France
| | - Laurent J. Feldman
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris 7, Paris, France, and Université Paris 13, Villetaneuse, France, Laboratoire d’Ingénierie des Matériaux et des Hautes Pressions (CNRS UPR 1311), Université Paris 13, Villetaneuse, France, and AP-HP, Hôpital Bichat, Département de Cardiologie, Paris, France
| | - Didier Letourneur
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris 7, Paris, France, and Université Paris 13, Villetaneuse, France, Laboratoire d’Ingénierie des Matériaux et des Hautes Pressions (CNRS UPR 1311), Université Paris 13, Villetaneuse, France, and AP-HP, Hôpital Bichat, Département de Cardiologie, Paris, France
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Zhao X, Pan F, Holt CM, Lewis AL, Lu JR. Controlled delivery of antisense oligonucleotides: a brief review of current strategies. Expert Opin Drug Deliv 2009; 6:673-86. [PMID: 19552611 DOI: 10.1517/17425240902992894] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Antisense therapy has been investigated extensively over the past two decades, either experimentally for gene functional research or clinically as therapeutic agents owing to the conceptual simplicity, ease of design and low cost. The concept of this therapeutic approach is promising because short antisense oligonucleotides (ASOs) can be delivered into target cells for specific hybridisation with target mRNA, resulting in the inhibition of the expression of pathogenic genes. However, the efficient delivery of the ASO molecules into target cells remains challenging; this bottleneck together with several other technical hurdles need to be overcome before this approach becomes effective and widely adopted. A variety of vectors such as lipids, polymers, peptides and nanoparticles have been explored. This review outlines the recent advances of the non-viral ASO delivery strategies. Several recent scientific studies, including authors' contributions, have been selected to highlight the technical aspects of ASO delivery.
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Affiliation(s)
- Xiubo Zhao
- University of Manchester, School of Physics and Astronomy, Biological Physics Group, Schuster Building, Manchester M13 9PL, UK.
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Kim TG, Lee H, Jang Y, Park TG. Controlled Release of Paclitaxel from Heparinized Metal Stent Fabricated by Layer-by-Layer Assembly of Polylysine and Hyaluronic Acid-g-Poly(lactic-co-glycolic acid) Micelles Encapsulating Paclitaxel. Biomacromolecules 2009; 10:1532-9. [PMID: 19361215 DOI: 10.1021/bm900116r] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Taek Gyoung Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea, and Division of Cardiology, Cardiovascular Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyukjin Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea, and Division of Cardiology, Cardiovascular Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Yangsoo Jang
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea, and Division of Cardiology, Cardiovascular Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Tae Gwan Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea, and Division of Cardiology, Cardiovascular Center, Yonsei University College of Medicine, Seoul, South Korea
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Hlawaty H, San Juan A, Jacob MP, Vranckx R, Letourneur D, Feldman LJ. Local matrix metalloproteinase 2 gene knockdown in balloon-injured rabbit carotid arteries using nonviral-small interfering RNA transfection. J Gene Med 2009; 11:92-9. [DOI: 10.1002/jgm.1275] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Meyers S, Kenan D, Grinstaff M. Enzymatic Release of a Surface-Adsorbed RGD Therapeutic from a Cleavable Peptide Anchor. ChemMedChem 2008; 3:1645-8. [DOI: 10.1002/cmdc.200800205] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Derkaoui SM, Avramoglou T, Barbaud C, Letourneur D. Synthesis and characterization of a new polysaccharide-graft-polymethacrylate copolymer for three-dimensional hybrid hydrogels. Biomacromolecules 2008; 9:3033-8. [PMID: 18826274 DOI: 10.1021/bm800470z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hybrid materials constituted by hydrophobic and hydrophilic biocompatible macromolecules are useful for biomedical applications. In this context, a well-known acrylic monomer (methyl methacrylate) was polymerized and grafted onto the polysaccharide dextran by the use of ceric ammonium nitrate as a redox initiator in aqueous nitric acid medium. The effects of concentrations of dextran, acrylic monomer, and ceric ions on the copolymerization yields were investigated in detail. The obtained polymers were studied by solubility measurements, Fourier transform infrared spectrometry, (13)C nuclear magnetic resonance spectroscopy, and viscosimetric analysis. Interestingly, we found conditions to form transparent and homogeneous thin films or 3D structures with hybrid properties. Indeed, the copolymer, but not dextran or PMMA, could be dissolved in water/THF (20/80 v/v). The thermomechanical properties of the resulting copolymer analyzed by differential scanning calorimetry and dynamic mechanical analysis showed the occurrence of a single glass-transition temperature and a marked difference with the two homopolymers. The cytocompatibility of the copolymer with human endothelial cells was evidenced by the normal cell adhesion, proliferation, and morphology after 5 days in culture on these gels. In conclusion, this type of copolymer with hybrid properties of two biocompatible macromolecules could be of great interest as a 3D scaffold or for coating in biomedical applications.
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Affiliation(s)
- S M Derkaoui
- Inserm, U698, Bio-ingénierie de Polyméres Cardiovasculaires, Institut Galilée, Université Paris 13, 99 Avenue Jean-Baptiste Clément, 93430 Villetaneuse, France
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50
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Ghonaim HM, Li S, Blagbrough IS. Very long chain N4, N9 -diacyl spermines: non-viral lipopolyamine vectors for efficient plasmid DNA and siRNA delivery. Pharm Res 2008; 26:19-31. [PMID: 18781381 DOI: 10.1007/s11095-008-9705-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2008] [Accepted: 08/06/2008] [Indexed: 01/27/2023]
Abstract
PURPOSE To study the effect of increasing the chain length over C-18 and varying the oxidation level in synthesized N4, N9-diacyl spermines on DNA and siRNA formulation, and then to compare their transfection efficiency in cell lines METHODS The five novel very long chain N4, N9-diacyl polyamines: N4, N9-[diarachidoyl, diarachidonoyl, dieicosenoyl, dierucoyl and dinervonoyl]-1,12-diamino-4,9-diazadodecane were synthesized. The abilities of these novel compounds to condense DNA and to form nanoparticles were studied using ethidium bromide fluorescence quenching and nanoparticle characterization techniques. Transfection efficiency was studied in FEK4 primary skin cells and in an immortalized cancer cell line (HtTA), and compared with the non-liposomal transfection formulation Lipogen, N4, N9-dioleoyl-1,12-diamino-4,9-diazadodecane. Also, the abilities of these compounds to condense siRNA and to form nanoparticles were studied using a RiboGreen intercalation assay and their abilities to deliver siRNA into cells were studied in FEK4 and HtTA cells using fluorescein-labelled Label IT(R) RNAi Delivery Control, a sequenced 21-mer from Mirus. RESULTS We show efficient pEGFP and siRNA formulation and delivery to primary skin and cancer cell lines. CONCLUSIONS Adding two C20 or C22 chains, both mono-cis-unsaturated, N4, N9-dieicosenoyl spermine and N4, N9-dierucoyl spermine, gave efficient siRNA delivery vectors, even in the presence of serum, comparable to TransIT-TKO and with excellent cell viability.
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Affiliation(s)
- Hassan M Ghonaim
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, UK
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