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Chen X, Wang Y, Li C, Hua Z, Cui H, Lin L. Antibacterial effect of protease-responsive cationic eugenol liposomes modified by gamma-polyglutamic acid against Staphylococcus aureus. J Liposome Res 2024; 34:411-420. [PMID: 37966062 DOI: 10.1080/08982104.2023.2280829] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 11/03/2023] [Indexed: 11/16/2023]
Abstract
Eugenol, as a natural antibacterial agent, has been widely studied for its inhibitory effect on the common food-borne pathogen Staphylococcus aureus (S. aureus). However, the widespread application of eugenol is still limited by its instability and volatility. Herein, γ-polyglutamic acid coated eugenol cationic liposomes (pGA-ECLPs) were successfully constructed by self-assembly with an average particle size of 170.7 nm and an encapsulation efficiency of 36.2%. The formation of pGA shell significantly improved the stability of liposomes, and the encapsulation efficiency of eugenol only decreased by 20.7% after 30 days of storage at 4 °C. On the other hand, the pGA layer can be hydrolyzed by S. aureus, achieving effective control of release through response to bacterial stimuli. The application experiments further confirmed that pGA-ECLPs effectively prolonged the antibacterial effect of eugenol in fresh chicken without causing obvious sensory effects on the food. The above results of this study provide an important reference for extending the action time of natural antibacterial substances and developing new stimuli-responsive antibacterial systems.
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Affiliation(s)
- Xiaochen Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Yiwei Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Changzhu Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, China
| | - Zichun Hua
- School of Life Sciences, Nanjing University, Nanjing, China
- Changzhou High-Tech Research Institute of Nanjing University, Changzhou China
| | - Haiying Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Lin Lin
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, China
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2
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Moses K, Van Tassel PR. Polyelectrolyte Influence on Beta-Hairpin Peptide Stability: A Simulation Study. J Phys Chem B 2023; 127:359-370. [PMID: 36574611 DOI: 10.1021/acs.jpcb.2c06641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Assemblies of proteins and charged macromolecules (polyelectrolytes) find important applications as pharmaceutical formulations, biocatalysts, and cell-contacting substrates. A key question is how the polymer component influences the structure and function of the protein. The present paper addresses the influence of charged polymers on the thermal stability of two model beta-hairpin-forming peptides through an all-atom, replica exchange molecular dynamics simulation. The (negatively charged) peptides consist of the terminal 16 amino acids of the B1 domain of Protein G (GB1) and a variant with three of the GB1 residues substituted with tryptophan (Tryptophan Zipper 4, or TZ4). A (cationic) lysine polymer is seen to thermally stabilize TZ4 and destabilize GB1, while a (also cationic) chitosan polymer slightly stabilizes GB1 but has essentially no effect on TZ4. Free energy profiles reveal folded and unfolded conformations to be separated by kinetic barriers generally acting in the direction of the thermodynamically favored state. Through application of an Ising-like statistical mechanical model, a mechanism is proposed based on competition between (indirect) entropic stabilization of folded versus unfolded states and (direct) competition for hydrogen-bonding and hydrophobic interactions. These findings have important implications to the design of polyelectrolyte-based materials for biomedical and biotechnological applications.
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Affiliation(s)
- Kevin Moses
- Dept. of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Paul R Van Tassel
- Dept. of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
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3
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Nanomaterials Application in Endodontics. MATERIALS 2021; 14:ma14185296. [PMID: 34576522 PMCID: PMC8464804 DOI: 10.3390/ma14185296] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/21/2021] [Accepted: 09/09/2021] [Indexed: 12/11/2022]
Abstract
In recent years, nanomaterials have become increasingly present in medicine, especially in dentistry. Their characteristics are proving to be very useful in clinical cases. Due to the intense research in the field of biomaterials and nanotechnology, the efficacy and possibilities of dental procedures have immensely expanded over the years. The nano size of materials allows them to exhibit properties not present in their larger-in-scale counterparts. The medical procedures in endodontics are time-consuming and mostly require several visits to be able to achieve the proper result. In this field of dentistry, there are still major issues about the removal of the mostly bacterial infection from the dental root canals. It has been confirmed that nanoparticles are much more efficient than traditional materials and appear to have superior properties when it comes to surface chemistry and bonding. Their unique antibacterial properties are also promising features in every medical procedure, especially in endodontics. High versatility of use of nanomaterials makes them a powerful tool in dental clinics, in a plethora of endodontic procedures, including pulp regeneration, drug delivery, root repair, disinfection, obturation and canal filling. This study focuses on summing up the current knowledge about the utility of nanomaterials in endodontics, their characteristics, advantages, disadvantages, and provides a number of reasons why research in this field should be continued.
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Tsikopoulos A, Petinaki E, Festas C, Tsikopoulos K, Meroni G, Drago L, Skoulakis C. In vitro Inhibition of Biofilm Formation on Silicon Rubber Voice Prosthesis: Α Systematic Review and Meta-Analysis. ORL J Otorhinolaryngol Relat Spec 2021; 84:10-29. [PMID: 34182551 DOI: 10.1159/000516345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 04/02/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Biofilm formation on voice prostheses is the primary reason for their premature implant dysfunction. Multiple strategies have been proposed over the last decades to achieve inhibition of biofilm formation on these devices. The purpose of this study was to assess the results of the available in vitro biofilm inhibition modalities on silicone rubber voice prostheses. METHODS We conducted a systematic search in PubMed, Embase, and the Cochrane Central Register of Controlled Trials databases up to February 29, 2020. A total of 33 in vitro laboratory studies investigating the efficacy of different coating methods against Candida, Staphylococcus, Streptococcus, Lactobacilli, and Rothia biofilm growth on silicone rubber medical devices were included. Subgroup analysis linked to the type of prevention modality was carried out, and quality assessment was performed with the use of the modified CONSORT tool. RESULTS Data from 33 studies were included in qualitative analysis, of which 12 qualified for quantitative analysis. For yeast biofilm formation assessment, there was a statistically significant difference in favor of the intervention group (standardized mean difference [SMD] = -1.20; 95% confidence interval [CI] [-1.73, -0.66]; p < 0.0001). Subgroup analysis showed that combined methods (active and passive surface modification) are the most effective for biofilm inhibition in yeast (SMD = -2.53; 95% CI [-4.02, -1.03]; p = 0.00001). No statistically significant differences between intervention and control groups were shown for bacterial biofilm inhibition (SMD = -0.09; 95% CI [-0.68, 0.46]; p = 0.65), and the results from the subgroup analysis found no notable differences between the surface modification methods. After analyzing data on polymicrobial biofilms, a statistically significant difference in favor of prevention methods in comparison with the control group was detected (SMD = -2.59; 95% CI [-7.48, 2.31]; p = 0.30). CONCLUSIONS The meta-analysis on biofilm inhibition demonstrated significant differences in favor of yeast biofilm inhibition compared to bacteria. A stronger inhibition with the application of passive or combined active and passive surface modification techniques was reported.
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Affiliation(s)
- Alexios Tsikopoulos
- Department of Otorhinolaryngology, School of Medicine, University of Thessaly, Larissa, Greece
| | - Efi Petinaki
- Department of Biopathology and Clinical Microbiology, School of Medicine, University of Thessaly, Larissa, Greece
| | - Charalampos Festas
- Department of Otorhinolaryngology, 401 Army General Training Hospital, Athens, Greece
| | | | - Gabriele Meroni
- Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
| | - Lorenzo Drago
- Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
| | - Charalampos Skoulakis
- Department of Otorhinolaryngology, School of Medicine, University of Thessaly, Larissa, Greece
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5
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Landry MJ, Gu K, Harris SN, Al‐Alwan L, Gutsin L, Biasio D, Jiang B, Nakamura DS, Corkery TC, Kennedy TE, Barrett CJ. Tunable Engineered Extracellular Matrix Materials: Polyelectrolyte Multilayers Promote Improved Neural Cell Growth and Survival. Macromol Biosci 2019; 19:e1900036. [DOI: 10.1002/mabi.201900036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/12/2019] [Indexed: 01/26/2023]
Affiliation(s)
- Michael J. Landry
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of ChemistryMcGill University 801 Sherbrooke St. West Montreal QC H3A 0B8 Canada
| | - Kaien Gu
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of ChemistryMcGill University 801 Sherbrooke St. West Montreal QC H3A 0B8 Canada
| | - Stephanie N. Harris
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of Neurology and NeurosurgeryMontreal Neurological InstituteMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
| | - Laila Al‐Alwan
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of Neurology and NeurosurgeryMontreal Neurological InstituteMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
| | - Laura Gutsin
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of ChemistryMcGill University 801 Sherbrooke St. West Montreal QC H3A 0B8 Canada
| | - Daniele Biasio
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of ChemistryMcGill University 801 Sherbrooke St. West Montreal QC H3A 0B8 Canada
| | - Bernie Jiang
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of ChemistryMcGill University 801 Sherbrooke St. West Montreal QC H3A 0B8 Canada
| | - Diane S. Nakamura
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of Neurology and NeurosurgeryMontreal Neurological InstituteMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
| | - T. Christopher Corkery
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
| | - Timothy E. Kennedy
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of Neurology and NeurosurgeryMontreal Neurological InstituteMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
| | - Christopher J. Barrett
- McGill Program in NeuroengineeringMcGill University 3801 University Street Montreal QC H3A 2B4 Canada
- Department of ChemistryMcGill University 801 Sherbrooke St. West Montreal QC H3A 0B8 Canada
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Enhanced biocompatibility of polyurethane-type shape memory polymers modified by plasma immersion ion implantation treatment and collagen coating: An in vivo study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:863-874. [PMID: 30889761 DOI: 10.1016/j.msec.2019.02.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/06/2019] [Accepted: 02/10/2019] [Indexed: 01/23/2023]
Abstract
As one of the promising smart materials, polyurethane-type shape memory polymers (SMPU) have been extensively investigated as potential biomedical implant materials. However, the hydrophobicity and bio-inertness of SMPU are major problems for biomedical applications. We applied plasma immersion ion implantation (PIII) to increase surface wettability and enable one-step covalent, functionalisation of SMPU with biological molecules to create a tuneable, biocompatible surface. The changes of surface properties due to PIII treatment in nitrogen plasma were determined by measurements of morphology, contact angle, surface energy, and nanoindentation. Collagen attachment on SMPU with and without PIII treatment was measured by Attenuated total reflectance-Fourier transform infrared (ATR-FTIR). To investigate in vivo biocompatibility, SMPU with/without PIII and with/without collagen were subcutaneously implanted in mice. SMPU implants with surrounding tissue were collected at days 1, 3, 7, 14 and 28 to study acute/subacute inflammatory responses at histopathological and immunohistochemical levels. The results show that PIII treatment improves wettability and releases residual stress in the SMPU surfaces substantially. Covalent attachment of collagen on PIII treated SMPU in a single step incubation was demonstrated by its resistance to removal by rigorous Sodium Dodecyl Sulfonate (SDS) washing. The in-vivo results showed significantly lower acute/subacute inflammation in response to SMPU with PIII treatment + collagen coating compared to untreated SMPU, collagen coated untreated SMPU, and PIII treated SMPU, characterised by lower total cell numbers, macrophages, neovascularisation, cellular proliferation, cytokine production, and matrix metalloproteinase production. This comprehensive in vivo study of PIII treatment with protein coating demonstrates that the combination of PIII treatment and collagen coating is a promising approach to enhance the biocompatibility of SMPU, facilitating its application as an implantable biomaterial.
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7
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Song M, Zhu H, Ye L, Liu C, Xu Z. Strategically prolonged release of multiple antibacterial components from a thin film coating for synergistic effects against Staphylococcus aureus infections. RSC Adv 2019; 9:32683-32690. [PMID: 35529751 PMCID: PMC9073156 DOI: 10.1039/c9ra03365c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/17/2019] [Indexed: 01/01/2023] Open
Abstract
Biomaterial-associated infections (BAIs) remain a major challenge in clinical surgery because they can potentially cause serious disabilities in patients.
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Affiliation(s)
- Meijun Song
- Department of Respiratory Medicine
- Zhejiang Provincial People's Hospital
- Hangzhou
- China
- Department of Infectious Diseases
| | - Haidong Zhu
- Department of Radiology
- Ningbo Medical Center
- Lihuili Eastern Hospital
- Ningbo
- China
| | - Lin Ye
- Department of Emergency Medicine
- Ningbo No. 2 Hospital
- Ningbo
- China
| | - Chengxiang Liu
- Department of Emergency Medicine
- Ningbo No. 2 Hospital
- Ningbo
- China
| | - Zhaojun Xu
- Department of Intensive Care Unit
- Ningbo No. 2 Hospital
- Ningbo
- China
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8
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Zhou G, Groth T. Host Responses to Biomaterials and Anti-Inflammatory Design-a Brief Review. Macromol Biosci 2018; 18:e1800112. [DOI: 10.1002/mabi.201800112] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/08/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Guoying Zhou
- Biomedical Materials Group; Institute of Pharmacy; Martin Luther University Halle-Wittenberg; 06099 Halle (Saale) Germany
| | - Thomas Groth
- Biomedical Materials Group; Institute of Pharmacy and, Interdisciplinary Center of Material Science and Interdisciplinary Center for Transfer-Oriented Research in Natural Sciences; Martin Luther University Halle-Wittenberg; 06099 Halle (Saale) Germany
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9
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Current advanced therapy cell-based medicinal products for type-1-diabetes treatment. Int J Pharm 2018; 543:107-120. [PMID: 29597032 DOI: 10.1016/j.ijpharm.2018.03.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/19/2018] [Accepted: 03/24/2018] [Indexed: 12/11/2022]
Abstract
In the XXI century diabetes mellitus has become one of the main threats to human health with higher incidence in regions such as Europe and North America. Type 1 diabetes mellitus (T1DM) occurs as a consequence of the immune-mediated destruction of insulin producing β-cells located in the endocrine part of the pancreas, the islets of Langerhans. The administration of exogenous insulin through daily injections is the most prominent treatment for T1DM but its administration is frequently associated to failure in glucose metabolism control, finally leading to hyperglycemia episodes. Other approaches have been developed in the past decades, such as whole pancreas and islet allotransplantation, but they are restricted to patients who exhibit frequent episodes of hypoglycemia or renal failure because the lack of donors and islet survival. Moreover, patients transplanted with either whole pancreas or islets require of immune suppression to avoid the rejection of the transplant. Currently, advanced therapy medicinal products (ATMP), such as implantable devices, have been developed in order to reduce immune rejection response while increasing cell survival. To overcome these issues, ATMPs must promote vascularization, guaranteeing the nutritional contribution, while providing O2 until vasculature can surround the device. Moreover, it should help in the immune-protection to avoid acute and chronic rejection. The transplanted cells or islets should be embedded within biomaterials with tunable properties like injectability, stiffness and porosity mimicking natural ECM structural characteristics. And finally, an infinitive cell source that solves the donor scarcity should be found such as insulin producing cells derived from mesenchymal stem cells (MSCs), embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs). Several companies have registered their ATMPs and future studies envision new prototypes. In this review, we will discuss the mechanisms and etiology of diabetes, comparing the clinical trials in the last decades in order to define the main characteristics for future ATMPs.
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10
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Gand A, Tabuteau M, Chat C, Ladam G, Atmani H, Van Tassel PR, Pauthe E. Fibronectin-based multilayer thin films. Colloids Surf B Biointerfaces 2017; 156:313-319. [DOI: 10.1016/j.colsurfb.2017.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 04/10/2017] [Accepted: 05/08/2017] [Indexed: 12/13/2022]
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11
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Gao M, Zhang H, Dong W, Bai J, Gao B, Xia D, Feng B, Chen M, He X, Yin M, Xu Z, Witman N, Fu W, Zheng J. Tissue-engineered trachea from a 3D-printed scaffold enhances whole-segment tracheal repair. Sci Rep 2017; 7:5246. [PMID: 28701742 PMCID: PMC5507982 DOI: 10.1038/s41598-017-05518-3] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/30/2017] [Indexed: 01/21/2023] Open
Abstract
Long segmental repair of trachea stenosis is an intractable condition in the clinic. The reconstruction of an artificial substitute by tissue engineering is a promising approach to solve this unmet clinical need. 3D printing technology provides an infinite possibility for engineering a trachea. Here, we 3D printed a biodegradable reticular polycaprolactone (PCL) scaffold with similar morphology to the whole segment of rabbits' native trachea. The 3D-printed scaffold was suspended in culture with chondrocytes for 2 (Group I) or 4 (Group II) weeks, respectively. This in vitro suspension produced a more successful reconstruction of a tissue-engineered trachea (TET), which enhanced the overall support function of the replaced tracheal segment. After implantation of the chondrocyte-treated scaffold into the subcutaneous tissue of nude mice, the TET presented properties of mature cartilage tissue. To further evaluate the feasibility of repairing whole segment tracheal defects, replacement surgery of rabbits' native trachea by TET was performed. Following postoperative care, mean survival time in Group I was 14.38 ± 5.42 days, and in Group II was 22.58 ± 16.10 days, with the longest survival time being 10 weeks in Group II. In conclusion, we demonstrate the feasibility of repairing whole segment tracheal defects with 3D printed TET.
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Affiliation(s)
- Manchen Gao
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Hengyi Zhang
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Wei Dong
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Jie Bai
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
- Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Botao Gao
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Dekai Xia
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Bei Feng
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
- Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Maolin Chen
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Xiaomin He
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Meng Yin
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Zhiwei Xu
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China
| | - Nevin Witman
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, S-171 77, Sweden
| | - Wei Fu
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China.
- Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China.
| | - Jinghao Zheng
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127, China.
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12
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Knopf-Marques H, Barthes J, Wolfova L, Vidal B, Koenig G, Bacharouche J, Francius G, Sadam H, Liivas U, Lavalle P, Vrana NE. Auxiliary Biomembranes as a Directional Delivery System To Control Biological Events in Cell-Laden Tissue-Engineering Scaffolds. ACS OMEGA 2017; 2:918-929. [PMID: 30023620 PMCID: PMC6044576 DOI: 10.1021/acsomega.6b00502] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/02/2017] [Indexed: 06/08/2023]
Abstract
Delivery of growth factors is an indispensable part of tissue engineering. Here, we describe a detachable membrane-based release system composed of extracellular matrix components that can be attached to hydrogels to achieve directional release of bioactive molecules. This way, the release of cytokines/growth factors can be started at a desired point of tissue maturation or directly in vivo. As a model, we develop thin films of an interpenetrating network of double-cross-linked gelatin and hyaluronic acid derivatives. The use of the auxiliary release system with vascular endothelial growth factor results in extensive sprouting by encapsulated vascular endothelial cells. The presence of the release system with interleukin-4 results in clustering of encapsulated macrophages with a significant decrease in M1 macrophages (proinflammatory). This system can be used in conjunction with three-dimensional structures as an auxiliary system to control artificial tissue maturation and growth.
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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, 8 rue
Sainte Elisabeth, 67000 Strasbourg, France
| | - Julien Barthes
- INSERM
UMR 1121, 11 rue Humann, 67085 Strasbourg, France
- PROTiP
Medical, 8 Place de l’Hôpital, 67000 Strasbourg, France
| | - Lucie Wolfova
- Contipro
Biotech S.R.O., Dolni Dobrouc 401, 561 02 Dolni Dobrouc, Czech Republic
| | - Bérengère Vidal
- PROTiP
Medical, 8 Place de l’Hôpital, 67000 Strasbourg, France
| | | | - Jalal Bacharouche
- Laboratoire
de Chimie Physique et Microbiologie pour l’Environnement, CNRS,
UMR 7564, 405 rue de
Vandoeuvre, 54600 Villers-les-Nancy, France
| | - Grégory Francius
- Laboratoire
de Chimie Physique et Microbiologie pour l’Environnement, CNRS,
UMR 7564, 405 rue de
Vandoeuvre, 54600 Villers-les-Nancy, France
| | | | | | - Philippe Lavalle
- INSERM
UMR 1121, 11 rue Humann, 67085 Strasbourg, France
- Faculté
de Chirurgie Dentaire, Université
de Strasbourg, 8 rue
Sainte Elisabeth, 67000 Strasbourg, France
| | - Nihal Engin Vrana
- INSERM
UMR 1121, 11 rue Humann, 67085 Strasbourg, France
- PROTiP
Medical, 8 Place de l’Hôpital, 67000 Strasbourg, France
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13
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Han B, Ma T, Vergara JH, Palmese GR, Yin J, Lee D, Han L. Non-additive impacts of covalent cross-linking on the viscoelastic nanomechanics of ionic polyelectrolyte complexes. RSC Adv 2017. [DOI: 10.1039/c7ra08514a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study elucidates the influences of adding covalent cross-linking on the nanomechanical viscoelasticity of ionically cross-linked polyelectrolyte networks.
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Affiliation(s)
- Biao Han
- School of Biomedical Engineering, Science, and Health Systems
- Drexel University
- Philadelphia
- USA
| | - Tianzhu Ma
- School of Biomedical Engineering, Science, and Health Systems
- Drexel University
- Philadelphia
- USA
| | - John H. Vergara
- Department of Chemical and Biological Engineering
- Drexel University
- Philadelphia
- USA
| | - Giuseppe R. Palmese
- Department of Chemical and Biological Engineering
- Drexel University
- Philadelphia
- USA
| | - Jie Yin
- Department of Mechanical Engineering
- Temple University
- Philadelphia
- USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering
- University of Pennsylvania
- Philadelphia
- USA
| | - Lin Han
- School of Biomedical Engineering, Science, and Health Systems
- Drexel University
- Philadelphia
- USA
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14
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Ghorbani F, Feizabadi M, Farzanegan R, Vaziri E, Samani S, Lajevardi S, Moradi L, Shadmehr MB. An Investigation of Topics and Trends of Tracheal Replacement Studies Using Co-Occurrence Analysis. TISSUE ENGINEERING PART B-REVIEWS 2016; 23:118-127. [PMID: 27758155 DOI: 10.1089/ten.teb.2016.0254] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This study evaluated tracheal regeneration studies using scientometric and co-occurrence analysis to identify the most important topics and assess their trends over time. To provide the adequate search options, PubMed, Scopus, and Web of Science (WOS) were used to cover various categories such as keywords, countries, organizations, and authors. Search results were obtained by employing Bibexcel. Co-occurrence analysis was applied to evaluate the publications. Finally, scientific maps, author's network, and country contributions were depicted using VOSviewer and NetDraw. Furthermore, the first 25 countries and 130 of the most productive authors were determined. Regarding the trend analysis, 10 co-occurrence terms out of highly frequent words were examined at 5-year intervals. Our findings indicated that the field of trachea regeneration has tested different approaches over the time. In total, 65 countries have contributed to scientific progress both in experimental and clinical fields. Special keywords such as tissue engineering and different types of stem cells have been increasingly used since 1995. Studies have addressed topics such as angiogenesis, decellularization methods, extracellular matrix, and mechanical properties since 2011. These findings will offer evidence-based information about the current status and trends of tracheal replacement research topics over time, as well as countries' contributions.
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Affiliation(s)
- Fariba Ghorbani
- 1 Tracheal Diseases Research Center (TDRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Mansoureh Feizabadi
- 2 Sabzevar University of Medical Sciences, Faculty of Medicine, Sabzevar, Iran
| | - Roya Farzanegan
- 1 Tracheal Diseases Research Center (TDRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Esmaeil Vaziri
- 3 University of Zabol, Faculty of Humanities, Department of Information Science and Knowledge Studies, Zabol, Iran
| | - Saeed Samani
- 4 Department of Tissue Engineering & Applied Cell Sciences, School of Advanced Technologies in Medicine , Tehran, Iran
| | | | - Lida Moradi
- 4 Department of Tissue Engineering & Applied Cell Sciences, School of Advanced Technologies in Medicine , Tehran, Iran
| | - Mohammad Behgam Shadmehr
- 1 Tracheal Diseases Research Center (TDRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences , Tehran, Iran
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15
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Herron M, Schurr MJ, Murphy CJ, McAnulty JF, Czuprynski CJ, Abbott NL. Interfacial Stacks of Polymeric Nanofilms on Soft Biological Surfaces that Release Multiple Agents. ACS APPLIED MATERIALS & INTERFACES 2016; 8:26541-26551. [PMID: 27579573 DOI: 10.1021/acsami.6b08608] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report a general and facile method that permits the transfer (stacking) of multiple independently fabricated and nanoscopically thin polymeric films, each containing a distinct bioactive agent, onto soft biomedically relevant surfaces (e.g., collagen-based wound dressings). By using polyelectrolyte multilayer films (PEMs) formed from poly(allyl amine hydrochloride) and poly(acrylic acid) as representative polymeric nanofilms and micrometer-thick water-soluble poly(vinyl alcohol) sacrificial films to stack the PEMs, we demonstrate that it is possible to create stacked polymeric constructs containing multiple bioactive agents (e.g., antimicrobial and antibiofilm agents) on soft and chemically complex surfaces onto which PEMs cannot be routinely transferred by stamping. We illustrate the characteristics and merits of the approach by fabricating stacks of Ga3+ (antibiofilm agent)- and Ag+ (antimicrobial agent)-loaded PEMs as prototypical examples of agent-containing PEMs and demonstrate that the stacked PEMs incorporate precise loadings of the agents and provide flexibility in terms of tuning release rates. Specifically, we show that simultaneous release of Ga3+ and Ag+ from the stacked PEMs on collagen-based wound dressings can lead to synergistic effects on bacteria, killing and dispersing biofilms formed by Pseudomonas aeruginosa (two strains: ATCC 27853 and MPAO1) at sufficiently low loadings of agents such that cytotoxic effects on mammalian cells are avoided. The approach is general (a wide range of bioactive agents other than Ga3+ and Ag+ can be incorporated into PEMs), and the modular nature of the approach potentially allows end-user functionalization of soft biological surfaces for programmed release of multiple bioactive agents.
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Affiliation(s)
- Maggie Herron
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Michael J Schurr
- Division of General Surgery, Mountain Area Health Education Center , 509 Biltmore Avenue, Asheville, North Carolina 28801, United States
| | - Christopher J Murphy
- Department of Ophthalmology and Vision Sciences, School of Medicine and Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis , 1423 Tupper Hall, Davis, California 95616, United States
| | - Jonathan F McAnulty
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison , 2015 Linden Drive, Madison, Wisconsin 53706, United States
| | - Charles J Czuprynski
- Department of Pathobiology, School of Veterinary Medicine, University of Wisconsin-Madison , 2015 Linden Drive, Madison, Wisconsin 53706, United States
| | - Nicholas L Abbott
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
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16
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Antifungal activity of a β-peptide in synthetic urine media: Toward materials-based approaches to reducing catheter-associated urinary tract fungal infections. Acta Biomater 2016; 43:240-250. [PMID: 27422198 DOI: 10.1016/j.actbio.2016.07.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/21/2016] [Accepted: 07/11/2016] [Indexed: 02/07/2023]
Abstract
UNLABELLED Catheter-associated urinary tract infections (CAUTI) are the most common type of hospital-acquired infection, with more than 30 million catheters placed annually in the US and a 10-30% incidence of infection. Candida albicans forms fungal biofilms on the surfaces of urinary catheters and is the leading cause of fungal urinary tract infections. As a step toward new strategies that could prevent or reduce the occurrence of C. albicans-based CAUTI, we investigated the ability of antifungal β-peptide-based mimetics of antimicrobial peptides (AMPs) to kill C. albicans and prevent biofilm formation in synthetic urine. Many α-peptide-based AMPs exhibit antifungal activities, but are unstable in high ionic strength media and are easily degraded by proteases-features that limit their use in urinary catheter applications. Here, we demonstrate that β-peptides designed to mimic the amphiphilic helical structures of AMPs retain 100% of their structural stability and exhibit antifungal and anti-biofilm activity against C. albicans in a synthetic medium that mimics the composition of urine. We demonstrate further that these agents can be loaded into and released from polymer-based multilayer coatings applied to polyurethane, polyethylene, and silicone tubing commonly used as urinary catheters. Our results reveal catheters coated with β-peptide-loaded multilayers to kill planktonic fungal cells for up to 21days of intermittent challenges with C. albicans and prevent biofilm formation on catheter walls for at least 48h. These new materials and approaches could lead to advances that reduce the occurrence of fungal CAUTI. STATEMENT OF SIGNIFICANCE Catheter-associated urinary tract infections are the most common type of hospital-acquired infection. The human pathogen Candida albicans is the leading cause of fungal urinary tract infections, and forms difficult to remove 'biofilms' on the surfaces of urinary catheters. We investigated synthetic β-peptide mimics of natural antimicrobial peptides as an approach to kill C. albicans and prevent biofilm formation in media that mimics the composition of urine. Our results reveal these mimics to retain structural stability and activity against C. albicans in synthetic urine. We also report polymer-based approaches to the local release of these agents within urinary catheter tubes. With further development, these materials-based approaches could lead to advances that reduce the occurrence of fungal urinary tract infections.
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Alvarez MM, Liu JC, Trujillo-de Santiago G, Cha BH, Vishwakarma A, Ghaemmaghami AM, Khademhosseini A. Delivery strategies to control inflammatory response: Modulating M1-M2 polarization in tissue engineering applications. J Control Release 2016; 240:349-363. [PMID: 26778695 DOI: 10.1016/j.jconrel.2016.01.026] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 01/09/2016] [Accepted: 01/12/2016] [Indexed: 12/21/2022]
Abstract
Macrophages are key players in many physiological scenarios including tissue homeostasis. In response to injury, typically the balance between macrophage sub-populations shifts from an M1 phenotype (pro-inflammatory) to an M2 phenotype (anti-inflammatory). In tissue engineering scenarios, after implantation of any device, it is desirable to exercise control on this M1-M2 progression and to ensure a timely and smooth transition from the inflammatory to the healing stage. In this review, we briefly introduce the current state of knowledge regarding macrophage function and nomenclature. Next, we discuss the use of controlled release strategies to tune the balance between the M1 and M2 phenotypes in the context of tissue engineering applications. We discuss recent literature related to the release of anti-inflammatory molecules (including nucleic acids) and the sequential release of cytokines to promote a timely M1-M2 shift. In addition, we describe the use of macrophages as controlled release agents upon stimulation by physical and/or mechanical cues provided by scaffolds. Moreover, we discuss current and future applications of "smart" implantable scaffolds capable of controlling the cascade of biochemical events related to healing and vascularization. Finally, we provide our opinion on the current challenges and the future research directions to improve our understanding of the M1-M2 macrophage balance and properly exploit it in tissue engineering and regenerative medicine applications.
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Affiliation(s)
- Mario Moisés Alvarez
- Biomaterials Innovation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA; Microsystems Technologies Laboratories, Massachusetts Institute of Technology, Cambridge, MA, USA; Centro de Biotecnología-FEMSA, Tecnológico de Monterrey, Monterrey, Nuevo León, México
| | - Julie C Liu
- Biomaterials Innovation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA; School of Chemical Engineering and Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Grissel Trujillo-de Santiago
- Biomaterials Innovation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA; Microsystems Technologies Laboratories, Massachusetts Institute of Technology, Cambridge, MA, USA; Centro de Biotecnología-FEMSA, Tecnológico de Monterrey, Monterrey, Nuevo León, México
| | - Byung-Hyun Cha
- Biomaterials Innovation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - Ajaykumar Vishwakarma
- Biomaterials Innovation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Amir M Ghaemmaghami
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA; Microsystems Technologies Laboratories, Massachusetts Institute of Technology, Cambridge, MA, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA; Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul, Republic of Korea; Department of Physics, King Abdulaziz University, Jeddah, Saudi Arabia.
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18
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Farkas E, Patko D, Khanh NQ, Toth E, Vonderviszt F, Horvath R. Self-assembly and structure of flagellin–polyelectrolyte composite layers: polyelectrolyte induced flagellar filament formation during the alternating deposition process. RSC Adv 2016. [DOI: 10.1039/c6ra19010c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This study first reveals a new type of linearly growing polyelectrolyte multilayer buildup mechanism, when one of the components (PAH) induces the self-assembly of the oppositely charged component (flagellin), creating a filamentous nanostructured coating.
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Affiliation(s)
- Eniko Farkas
- Nanobiosensorics Laboratory
- Institute for Technical Physics and Materials Science
- MTA EK MFA
- Budapest
- Hungary
| | - Daniel Patko
- Nanobiosensorics Laboratory
- Institute for Technical Physics and Materials Science
- MTA EK MFA
- Budapest
- Hungary
| | - Nguyen Quoc Khanh
- MEMS Laboratory
- Institute for Technical Physics and Materials Science
- Microtechnology Group
- MTA EK MFA
- Budapest
| | - Eva Toth
- Doctoral School of Molecular and Nanotechnologies
- Faculty of Information Technology
- University of Pannonia
- Hungary
- Bio-Nanosystems Laboratory
| | - Ferenc Vonderviszt
- Nanobiosensorics Laboratory
- Institute for Technical Physics and Materials Science
- MTA EK MFA
- Budapest
- Hungary
| | - Robert Horvath
- Nanobiosensorics Laboratory
- Institute for Technical Physics and Materials Science
- MTA EK MFA
- Budapest
- Hungary
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19
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Active Nanofibrous Membrane Effects on Gingival Cell Inflammatory Response. MATERIALS 2015; 8:7217-7229. [PMID: 28793632 PMCID: PMC5455376 DOI: 10.3390/ma8105376] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 10/08/2015] [Accepted: 10/20/2015] [Indexed: 11/16/2022]
Abstract
Alpha-melanocyte stimulating hormone (α-MSH) is involved in normal skin wound healing and also has anti-inflammatory properties. The association of α-MSH to polyelectrolyte layers with various supports has been shown to improve these anti-inflammatory properties. This study aimed to evaluate the effects of nanofibrous membrane functionalized with α-MSH linked to polyelectrolyte layers on gingival cell inflammatory response. Human oral epithelial cells (EC) and fibroblasts (FB) were cultured on plastic or electrospun Poly-#-caprolactone (PCL) membranes with α-MSH covalently coupled to Poly-L-glutamic acid (PGA-α-MSH), for 6 to 24 h. Cells were incubated with or without Porphyromonas gingivalis lipopolysaccharide (Pg-LPS). Cell proliferation and migration were determined using AlamarBlue test and scratch assay. Expression of interleukin-6 (IL-6), tumor necrosis factor (TNF-α), and transforming growth factor-beta (TGF-β) was evaluated using RT-qPCR method. Cell cultures on plastic showed that PGA-α-MSH reduced EC and FB migration and decreased IL-6 and TGF-β expression in Pg-LPS stimulated EC. PGA-α-MSH functionalized PCL membranes reduced proliferation of Pg-LPS stimulated EC and FB. A significant decrease of IL-6, TNF-α, and TGF-β expression was also observed in Pg-LPS stimulated EC and FB. This study showed that the functionalization of nanofibrous PCL membranes efficiently amplified the anti-inflammatory effect of PGA-α-MSH on gingival cells.
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20
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Van Hove AH, Benoit DSW. Depot-Based Delivery Systems for Pro-Angiogenic Peptides: A Review. Front Bioeng Biotechnol 2015; 3:102. [PMID: 26236708 PMCID: PMC4504170 DOI: 10.3389/fbioe.2015.00102] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 06/29/2015] [Indexed: 01/13/2023] Open
Abstract
Insufficient vascularization currently limits the size and complexity for all tissue engineering approaches. Additionally, increasing or re-initiating blood flow is the first step toward restoration of ischemic tissue homeostasis. However, no FDA-approved pro-angiogenic treatments exist, despite the many pre-clinical approaches that have been developed. The relatively small size of peptides gives advantages over protein-based treatments, specifically with respect to synthesis and stability. While many pro-angiogenic peptides have been identified and shown promising results in vitro and in vivo, the majority of biomaterials developed for pro-angiogenic drug delivery focus on protein delivery. This narrow focus limits pro-angiogenic therapeutics as peptides, similar to proteins, suffer from poor pharmacokinetics in vivo, necessitating the development of controlled release systems. This review discusses pro-angiogenic peptides and the biomaterials delivery systems that have been developed, or that could easily be adapted for peptide delivery, with a particular focus on depot-based delivery systems.
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Affiliation(s)
- Amy H. Van Hove
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA
| | - Danielle S. W. Benoit
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA
- Department of Chemical Engineering, University of Rochester, Rochester, NY, USA
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
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21
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Kzhyshkowska J, Gudima A, Riabov V, Dollinger C, Lavalle P, Vrana NE. Macrophage responses to implants: prospects for personalized medicine. J Leukoc Biol 2015; 98:953-62. [PMID: 26168797 DOI: 10.1189/jlb.5vmr0415-166r] [Citation(s) in RCA: 136] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 06/15/2015] [Indexed: 01/08/2023] Open
Abstract
Implants, transplants, and implantable biomedical devices are mainstream solutions for a wide variety of human pathologies. One of the persistent problems around nondegradable metallic and polymeric implants is failure of macrophages to resolve the inflammation and their tendency to stay in a state, named "frustrated phagocytosis." During the initial phase, proinflammatory macrophages induce acute reactions to trauma and foreign materials, whereas tolerogenic anti-inflammatory macrophages control resolution of inflammation and induce the subsequent healing stage. However, implanted materials can induce a mixed pro/anti-inflammatory phenotype, supporting chronic inflammatory reactions accompanied by microbial contamination and resulting in implant failure. Several materials based on natural polymers for improved interaction with host tissue or surfaces that release anti-inflammatory drugs/bioactive agents have been developed for implant coating to reduce implant rejection. However, no definitive, long-term solution to avoid adverse immune responses to the implanted materials is available to date. The prevention of implant-associated infections or chronic inflammation by manipulating the macrophage phenotype is a promising strategy to improve implant acceptance. The immunomodulatory properties of currently available implant coatings need to be improved to develop personalized therapeutic solutions. Human primary macrophages exposed to the implantable materials ex vivo can be used to predict the individual's reactions and allow selection of an optimal coating composition. Our review describes current understanding of the mechanisms of macrophage interactions with implantable materials and outlines the prospects for use of human primary macrophages for diagnostic and therapeutic approaches to personalized implant therapy.
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Affiliation(s)
- Julia Kzhyshkowska
- *Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany; Red Cross Blood Service Baden-Württemberg-Hessen, Mannheim, Germany; Laboratory for Translational Cellular and Molecular Biomedicine, Tomsk State University, Tomsk, Russia; Protip SAS, Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, Strasbourg, France; and Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
| | - Alexandru Gudima
- *Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany; Red Cross Blood Service Baden-Württemberg-Hessen, Mannheim, Germany; Laboratory for Translational Cellular and Molecular Biomedicine, Tomsk State University, Tomsk, Russia; Protip SAS, Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, Strasbourg, France; and Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
| | - Vladimir Riabov
- *Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany; Red Cross Blood Service Baden-Württemberg-Hessen, Mannheim, Germany; Laboratory for Translational Cellular and Molecular Biomedicine, Tomsk State University, Tomsk, Russia; Protip SAS, Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, Strasbourg, France; and Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
| | - Camille Dollinger
- *Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany; Red Cross Blood Service Baden-Württemberg-Hessen, Mannheim, Germany; Laboratory for Translational Cellular and Molecular Biomedicine, Tomsk State University, Tomsk, Russia; Protip SAS, Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, Strasbourg, France; and Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
| | - Philippe Lavalle
- *Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany; Red Cross Blood Service Baden-Württemberg-Hessen, Mannheim, Germany; Laboratory for Translational Cellular and Molecular Biomedicine, Tomsk State University, Tomsk, Russia; Protip SAS, Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, Strasbourg, France; and Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
| | - Nihal Engin Vrana
- *Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany; Red Cross Blood Service Baden-Württemberg-Hessen, Mannheim, Germany; Laboratory for Translational Cellular and Molecular Biomedicine, Tomsk State University, Tomsk, Russia; Protip SAS, Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, Strasbourg, France; and Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
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22
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Jaganathan S. Bioresorbable polyelectrolytes for smuggling drugs into cells. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1080-97. [PMID: 25961363 DOI: 10.3109/21691401.2015.1011801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
There is ample evidence that biodegradable polyelectrolyte nanocapsules are multifunctional vehicles which can smuggle drugs into cells, and release them upon endogenous activation. A large number of endogenous stimuli have already been tested in vitro, and in vivo research is escalating. Thus, the interest in the design of intelligent polyelectrolyte multilayer (PEM) drug delivery systems is clear. The need of the hour is a systematic translation of PEM-based drug delivery systems from the lab to clinical studies. Reviews on multifarious stimuli that can trigger the release of drugs from such systems already exist. This review summarizes the available literature, with emphasis on the recent progress in PEM-based drug delivery systems that are receptive in the presence of endogenous stimuli, including enzymes, glucose, glutathione, pH, and temperature, and addresses different active and passive drug targeting strategies. Insights into the current knowledge on the diversified endogenous approaches and methodological challenges may bring inspiration to resolve issues that currently bottleneck the successful implementation of polyelectrolytes into the catalog of third-generation drug delivery systems.
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Affiliation(s)
- Sripriya Jaganathan
- a SRM Research Institute, SRM University , Kattankulathur, 603203 , Chennai , Tamil Nadu , India
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23
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Hsu BB, Hagerman SR, Jamieson K, Castleberry SA, Wang W, Holler E, Ljubimova JY, Hammond PT. Multifunctional Self-Assembled Films for Rapid Hemostat and Sustained Anti-infective Delivery. ACS Biomater Sci Eng 2015; 1:148-156. [PMID: 33429517 PMCID: PMC10065220 DOI: 10.1021/ab500050m] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Uncontrolled bleeding and infection are the major causes of death and morbidity from traumatic wounds during military conflicts, disasters, and accidents. Because immediate treatment is critical to survival, it is desirable to have a lightweight and rapidly applicable bandage-one capable of delivering a hemostat that can quickly resolve bleeding while addressing infection over short and longer time frames. It is challenging to design thin film coatings capable of multidrug release, particularly when the drugs are quite different in nature (biologic versus small molecule, charged versus neutral) and the desired release profiles are different for each drug. Herein we have adopted a layer-by-layer film assembly technique to create a linear combination of two independently functional films capable of rapidly releasing thrombin within minutes while sustaining vancomycin elution for more than 24 h. By conjugating vancomycin to a hydrolytically degradable polyacid, poly(β-L-malic acid), we were able to create a robust thin film with loading and release kinetics that remain unaffected by the additional deposition of a thrombin-based film, demonstrating the possibility for future multitherapeutic films with independently tunable release kinetics.
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Affiliation(s)
| | | | | | | | | | - Eggehard Holler
- Nanomedicine Research Center, Department of Neurosurgery, Cedars Sinai Medical Center, Los Angeles, California 90048, United States
| | - Julia Y Ljubimova
- Nanomedicine Research Center, Department of Neurosurgery, Cedars Sinai Medical Center, Los Angeles, California 90048, United States
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24
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Panayotov IV, Vladimirov BS, Dutilleul PYC, Levallois B, Cuisinier F. Strategies For Immobilization Of Bioactive Organic Molecules On Titanium Implant Surfaces - A Review. Folia Med (Plovdiv) 2015; 57:11-8. [PMID: 26431090 DOI: 10.1515/folmed-2015-0014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 02/01/2015] [Indexed: 12/16/2022] Open
Abstract
Numerous approaches have been used to improve the tissue-implant interface of titanium (Ti) and titanium alloy (Ti6Al4V). They all aim at increasing cell migration and attachment to the metal, preventing unspecific protein adsorption and improving post-implantation healing process. Promising methods for titanium and titanium alloy surface modification are based on the immobilization of biologically active organic molecules. New and interesting biochemical approaches to such surface modification include layer-by-layer deposition of polyelectrolyte films, phage display-selected surface binding peptides and self-assembled DNA monolayer systems. The present review summarizes the scientific information about these methods, which are at in vitro or in vivo development stages, and hopes to promote their future application in dental implantology and in oral and maxillofacial surgery.
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Affiliation(s)
- Ivan V Panayotov
- EA4203 Laboratoire de Bioingénierie et Nanoscience, Université de Montpellier, Montpellier, France
| | - Boyan S Vladimirov
- Department of Maxillofacial Surgery, Faculty of Dental Medicine, Medical University, Plovdiv, Bulgaria
| | - Pierre-Yves C Dutilleul
- EA4203 Laboratoire de Bioingénierie et Nanoscience, Université de Montpellier, Montpellier, France
| | - Bernard Levallois
- EA4203 Laboratoire de Bioingénierie et Nanoscience, Université de Montpellier, Montpellier, France
| | - Frédéric Cuisinier
- EA4203 Laboratoire de Bioingénierie et Nanoscience, Université de Montpellier, Montpellier, France
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25
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Abstract
Regenerative medicine has recently been established as an emerging interdisciplinary field focused on the repair; replacement or regeneration of cells, tissues and organs. It involves various disciplines, which are focused on different aspects of the regeneration process such as cell biology, gene therapy, bioengineering, material science and pharmacology. In this article, we will outline progress on tissue engineering of specific tissues and organs relevant to paediatric surgery.
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Affiliation(s)
- Panagiotis Maghsoudlou
- Surgery Unit, Institute of Child Health and Great Ormond Street Hospital, University College London, 30 Guilford St, London WC1N 1EH, UK
| | - Luca Urbani
- Surgery Unit, Institute of Child Health and Great Ormond Street Hospital, University College London, 30 Guilford St, London WC1N 1EH, UK
| | - Paolo De Coppi
- Surgery Unit, Institute of Child Health and Great Ormond Street Hospital, University College London, 30 Guilford St, London WC1N 1EH, UK.
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Branched polymer models and the mechanism of multilayer film buildup. Colloids Surf B Biointerfaces 2014; 121:331-9. [PMID: 24985760 DOI: 10.1016/j.colsurfb.2014.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/15/2014] [Accepted: 06/04/2014] [Indexed: 11/24/2022]
Abstract
The "in and out diffusion" hypothesis does not provide a conclusive explanation of the buildup displayed by some polyelectrolyte multilayer film systems. Here, we report initial tests of an alternative hypothesis, on which the completion of each adsorption cycle results in an increase in the number of polymer binding sites on the film surface. Polycationic dendrimeric peptides, which can potentially bind several oppositely-charged peptides each, have been designed, synthesized and utilized in comparative film buildup experiments. Material deposited, internal film structure and film surface morphology have been studied by ultraviolet spectroscopy (UVS), circular dichroism spectroscopy (CD), quartz crystal microbalance (QCM) and atomic force microscopy (AFM). Polycations tended to contribute more to film buildup than did polyanions on quartz but not on gold. Increasing the number of branches in the dendrimeric peptides from 4 to 8 reproducibly resulted in an increase in the film growth rate on quartz but not on gold. Peptide backbones tended to adopt a β-strand conformation on incorporation into a film. Thicker films had a greater surface roughness than thin films. The data are consistent with film buildup models in which the average number of polymer binding sites will increase with each successive adsorption cycle in the range where exponential growth is displayed.
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Development and in vitro assessment of enzymatically-responsive poly(ethylene glycol) hydrogels for the delivery of therapeutic peptides. Biomaterials 2014; 35:9719-30. [PMID: 25178558 DOI: 10.1016/j.biomaterials.2014.08.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 08/10/2014] [Indexed: 01/09/2023]
Abstract
Despite the recent expansion of peptide drugs, delivery remains a challenge due to poor localization and rapid clearance. Therefore, a hydrogel-based platform technology was developed to control and sustain peptide drug release via matrix metalloproteinase (MMP) activity. Specifically, hydrogels were composed of poly(ethylene glycol) and peptide drugs flanked by MMP substrates and terminal cysteine residues as crosslinkers. First, peptide drug bioactivity was investigated in expected released forms (e.g., with MMP substrate residues) in vitro prior to incorporation into hydrogels. Three peptides (Qk (from Vascular Endothelial Growth Factor), SPARC113, and SPARC118 (from Secreted Protein Acidic and Rich in Cysteine)) retained bioactivity and were used as hydrogel crosslinkers in full MMP degradable forms. Upon treatment with MMP2, hydrogels containing Qk, SPARC113, and SPARC118 degraded in 6.7, 6, and 1 days, and released 5, 8, and, 19% of peptide, respectively. Further investigation revealed peptide drug size controlled hydrogel swelling and degradation rate, while hydrophobicity impacted peptide release. Additionally, Qk, SPARC113, and SPARC118 releasing hydrogels increased endothelial cell tube formation 3.1, 1.7, and 2.8-fold, respectively. While pro-angiogenic peptides were the focus of this study, the design parameters detailed allow for adaptation of hydrogels to control peptide release for a variety of therapeutic applications.
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Hsu BB, Park MH, Hagerman SR, Hammond PT. Multimonth controlled small molecule release from biodegradable thin films. Proc Natl Acad Sci U S A 2014; 111:12175-80. [PMID: 25092310 PMCID: PMC4143022 DOI: 10.1073/pnas.1323829111] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Long-term, localized delivery of small molecules from a biodegradable thin film is challenging owing to their low molecular weight and poor charge density. Accomplishing highly extended controlled release can facilitate high therapeutic levels in specific regions of the body while significantly reducing the toxicity to vital organs typically caused by systemic administration and decreasing the need for medical intervention because of its long-lasting release. Also important is the ability to achieve high drug loadings in thin film coatings to allow incorporation of significant drug amounts on implant surfaces. Here we report a sustained release formulation for small molecules based on a soluble charged polymer-drug conjugate that is immobilized into nanoscale, conformal, layer-by-layer assembled films applicable to a variety of substrate surfaces. We measured a highly predictable sustained drug release from a polymer thin film coating of 0.5-2.7 μm that continued for more than 14 mo with physiologically relevant drug concentrations, providing an important drug delivery advance. We demonstrated this effect with a potent small molecule nonsteroidal anti-inflammatory drug, diclofenac, because this drug can be used to address chronic pain, osteoarthritis, and a range of other critical medical issues.
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Affiliation(s)
- Bryan B Hsu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139;Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139;Institute for Soldier Nanotechnologies, Cambridge, MA 02139; and
| | - Myoung-Hwan Park
- Department of Chemistry, Sahmyook University, Seoul 139-742, Korea; and
| | - Samantha R Hagerman
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Paula T Hammond
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139;Institute for Soldier Nanotechnologies, Cambridge, MA 02139; andDepartment of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
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29
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Raman N, Lee MR, Palecek SP, Lynn DM. Polymer multilayers loaded with antifungal β-peptides kill planktonic Candida albicans and reduce formation of fungal biofilms on the surfaces of flexible catheter tubes. J Control Release 2014; 191:54-62. [PMID: 24862322 DOI: 10.1016/j.jconrel.2014.05.026] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 05/12/2014] [Accepted: 05/16/2014] [Indexed: 01/07/2023]
Abstract
Candida albicans is the most common fungal pathogen responsible for hospital-acquired infections. Most C. albicans infections are associated with the implantation of medical devices that act as points of entry for the pathogen and as substrates for the growth of fungal biofilms that are notoriously difficult to eliminate by systemic administration of conventional antifungal agents. In this study, we report a fill-and-purge approach to the layer-by-layer fabrication of biocompatible, nanoscale 'polyelectrolyte multilayers' (PEMs) on the luminal surfaces of flexible catheters, and an investigation of this platform for the localized, intraluminal release of a cationic β-peptide-based antifungal agent. We demonstrate that polyethylene catheter tubes with luminal surfaces coated with multilayers ~700nm thick fabricated from poly-l-glutamic acid (PGA) and poly-l-lysine (PLL) can be loaded, post-fabrication, by infusion with β-peptide, and that this approach promotes extended intraluminal release of this agent (over ~4months) when incubated in physiological media. The β-peptide remained potent against intraluminal inoculation of the catheters with C. albicans and substantially reduced the formation of C. albicans biofilms on the inner surfaces of film-coated catheters. Finally, we report that these β-peptide-loaded coatings exhibit antifungal activity under conditions that simulate intermittent catheter use and microbial challenge for at least three weeks. We conclude that β-peptide-loaded PEMs offer a novel and promising approach to kill C. albicans and prevent fungal biofilm formation on surfaces, with the potential to substantially reduce the incidence of device-associated infections in indwelling catheters. β-Peptides comprise a promising new class of antifungal agents that could help address problems associated with the use of conventional antifungal agents. The versatility of the layer-by-layer approach used here thus suggests additional opportunities to exploit these new agents in other biomedical and personal care applications in which fungal infections are endemic.
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Affiliation(s)
- Namrata Raman
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison 53706, USA
| | - Myung-Ryul Lee
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison 53706, USA
| | - Sean P Palecek
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison 53706, USA.
| | - David M Lynn
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison 53706, USA; Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison 53706, USA.
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30
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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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31
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Steger V, Hampel M, Trick I, Müller M, Walles T. Clinical tracheal replacement: transplantation, bioprostheses and artificial grafts. Expert Rev Med Devices 2014; 5:605-12. [DOI: 10.1586/17434440.5.5.605] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Vrana NE, Erdemli O, Francius G, Fahs A, Rabineau M, Debry C, Tezcaner A, Keskin D, Lavalle P. Double entrapment of growth factors by nanoparticles loaded into polyelectrolyte multilayer films. J Mater Chem B 2014; 2:999-1008. [DOI: 10.1039/c3tb21304h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Peterson AM, Pilz-Allen C, Möhwald H, Shchukin DG. Evaluation of the role of polyelectrolyte deposition conditions in growth factor release. J Mater Chem B 2014; 2:2680-2687. [DOI: 10.1039/c3tb21757d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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34
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Vrana NE, Dupret-Bories A, Schultz P, Debry C, Vautier D, Lavalle P. Titanium microbead-based porous implants: bead size controls cell response and host integration. Adv Healthc Mater 2014; 3:79-87. [PMID: 23814016 DOI: 10.1002/adhm.201200369] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 02/02/2013] [Indexed: 01/03/2023]
Abstract
Openly porous structures in implants are desirable for better integration with the host tissue. Sintered microbead-based titanium implants for oto-rhinolaryngology applications, which create an environment where the cells can migrate in the areas between the microbeads, are developed. This structure promotes fibrovascular tissue formation within the implant in vivo. In this study, it is determine to what extent these events can be controlled by changing the physical environment of the implants both in vitro and in vivo. By cell tracking, it is observed that the size of the beads and the distance between the neighboring beads significantly affect the ability of cells to develop cell-to-cell contacts and to bridge the pores. Live cell staining shows that as the bead size gets smaller, the probability to observe cells that fill the porous areas is higher. This also affects the initial attachment and distribution of the cells and collagen secretion by fibroblasts. Obtaining a fast coverage of the system also enables co-culture systems where, the number and the distribution of the second cell type are boosted by the presence of the first. This concept is utilized to increase the attachment of vascular endothelial cells by an initial layer of fibroblasts. By decreasing the bead diameter, the overall colonization of the implant can be significantly increased in vivo. The effect of bead size has a similar pattern both in rats and rabbits, with faster colonization of smaller bead-based structures. Using smaller beads would improve clinical outcomes as faster integration facilitates the attainment of functionality by the implant.
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Affiliation(s)
- Nihal Engin Vrana
- INSERM, UMR-S 1121, "Biomatériaux et Bioingénierie", 11 rue Humann, F-67085 Strasbourg Cedex, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, 1 place de l'Hôpital, 67000 Strasbourg, France.
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35
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Vrana NE, Lavalle P, Dokmeci MR, Dehghani F, Ghaemmaghami AM, Khademhosseini A. Engineering functional epithelium for regenerative medicine and in vitro organ models: a review. TISSUE ENGINEERING PART B-REVIEWS 2013; 19:529-43. [PMID: 23705900 DOI: 10.1089/ten.teb.2012.0603] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Recent advances in the fields of microfabrication, biomaterials, and tissue engineering have provided new opportunities for developing biomimetic and functional tissues with potential applications in disease modeling, drug discovery, and replacing damaged tissues. An intact epithelium plays an indispensable role in the functionality of several organs such as the trachea, esophagus, and cornea. Furthermore, the integrity of the epithelial barrier and its degree of differentiation would define the level of success in tissue engineering of other organs such as the bladder and the skin. In this review, we focus on the challenges and requirements associated with engineering of epithelial layers in different tissues. Functional epithelial layers can be achieved by methods such as cell sheets, cell homing, and in situ epithelialization. However, for organs composed of several tissues, other important factors such as (1) in vivo epithelial cell migration, (2) multicell-type differentiation within the epithelium, and (3) epithelial cell interactions with the underlying mesenchymal cells should also be considered. Recent successful clinical trials in tissue engineering of the trachea have highlighted the importance of a functional epithelium for long-term success and survival of tissue replacements. Hence, using the trachea as a model tissue in clinical use, we describe the optimal structure of an artificial epithelium as well as challenges of obtaining a fully functional epithelium in macroscale. One of the possible remedies to address such challenges is the use of bottom-up fabrication methods to obtain a functional epithelium. Modular approaches for the generation of functional epithelial layers are reviewed and other emerging applications of microscale epithelial tissue models for studying epithelial/mesenchymal interactions in healthy and diseased (e.g., cancer) tissues are described. These models can elucidate the epithelial/mesenchymal tissue interactions at the microscale and provide the necessary tools for the next generation of multicellular engineered tissues and organ-on-a-chip systems.
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Affiliation(s)
- Nihal E Vrana
- 1 Institut National de la Santé et de la Recherche Médicale , INSERM, UMR-S 1121, "Biomatériaux et Bioingénierie," Strasbourg Cedex, France
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36
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Vrana NE, Dupret-Bories A, Chaubaroux C, Rieger E, Debry C, Vautier D, Metz-Boutigue MH, Lavalle P. Multi-scale modification of metallic implants with pore gradients, polyelectrolytes and their indirect monitoring in vivo. J Vis Exp 2013:e50533. [PMID: 23851618 DOI: 10.3791/50533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Metallic implants, especially titanium implants, are widely used in clinical applications. Tissue in-growth and integration to these implants in the tissues are important parameters for successful clinical outcomes. In order to improve tissue integration, porous metallic implants have being developed. Open porosity of metallic foams is very advantageous, since the pore areas can be functionalized without compromising the mechanical properties of the whole structure. Here we describe such modifications using porous titanium implants based on titanium microbeads. By using inherent physical properties such as hydrophobicity of titanium, it is possible to obtain hydrophobic pore gradients within microbead based metallic implants and at the same time to have a basement membrane mimic based on hydrophilic, natural polymers. 3D pore gradients are formed by synthetic polymers such as Poly-L-lactic acid (PLLA) by freeze-extraction method. 2D nanofibrillar surfaces are formed by using collagen/alginate followed by a crosslinking step with a natural crosslinker (genipin). This nanofibrillar film was built up by layer by layer (LbL) deposition method of the two oppositely charged molecules, collagen and alginate. Finally, an implant where different areas can accommodate different cell types, as this is necessary for many multicellular tissues, can be obtained. By, this way cellular movement in different directions by different cell types can be controlled. Such a system is described for the specific case of trachea regeneration, but it can be modified for other target organs. Analysis of cell migration and the possible methods for creating different pore gradients are elaborated. The next step in the analysis of such implants is their characterization after implantation. However, histological analysis of metallic implants is a long and cumbersome process, thus for monitoring host reaction to metallic implants in vivo an alternative method based on monitoring CGA and different blood proteins is also described. These methods can be used for developing in vitro custom-made migration and colonization tests and also be used for analysis of functionalized metallic implants in vivo without histology.
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37
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Zanina N, Mora L, Othmane A, Bénard M, Duncan A, Jouenne T, Vaudry D, Souiri M. Differences in Caco-2 cell attachment, migration on collagen and fibronectin coated polyelectrolyte surfaces. BIOTECHNOL BIOPROC E 2013. [DOI: 10.1007/s12257-012-0207-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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38
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Bechler SL, Si Y, Yu Y, Ren J, Liu B, Lynn DM. Reduction of intimal hyperplasia in injured rat arteries promoted by catheter balloons coated with polyelectrolyte multilayers that contain plasmid DNA encoding PKCδ. Biomaterials 2012; 34:226-36. [PMID: 23069712 DOI: 10.1016/j.biomaterials.2012.09.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 09/04/2012] [Indexed: 10/27/2022]
Abstract
New therapeutic approaches that eliminate or reduce the occurrence of intimal hyperplasia following balloon angioplasty could improve the efficacy of vascular interventions and improve the quality of life of patients suffering from vascular diseases. Here, we report that treatment of arteries using catheter balloons coated with thin polyelectrolyte-based films ('polyelectrolyte multilayers', PEMs) can substantially reduce intimal hyperplasia in an in vivo rat model of vascular injury. We used a layer-by-layer (LbL) process to coat the surfaces of inflatable catheter balloons with PEMs composed of nanolayers of a cationic poly(β-amino ester) (polymer 1) and plasmid DNA (pPKCδ) encoding the δ isoform of protein kinase C (PKCδ), a regulator of apoptosis and other cell processes that has been demonstrated to reduce intimal hyperplasia in injured arterial tissue when administered via perfusion using viral vectors. Insertion of balloons coated with polymer 1/pPKCδ multilayers into injured arteries for 20 min resulted in local transfer of DNA and elevated levels of PKCδ expression in the media of treated tissue three days after delivery. IFC and IHC analysis revealed these levels of expression to promote downstream cellular processes associated with up-regulation of apoptosis. Analysis of arterial tissue 14 days after treatment revealed polymer 1/pPKCδ-coated balloons to reduce the occurrence of intimal hyperplasia by ~60% compared to balloons coated with films containing empty plasmid vectors. Our results demonstrate the potential therapeutic value of this nanotechnology-based approach to local gene delivery in the clinically important context of balloon-mediated vascular interventions. These PEM-based methods could also prove useful for other in vivo applications that require short-term, surface-mediated transfer of plasmid DNA.
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Affiliation(s)
- Shane L Bechler
- Department of Chemical and Biological Engineering, University of Wisconsin - Madison, Madison, WI 53706, USA
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39
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Barthes J, Mertz D, Bach C, Metz-Boutigue MH, Senger B, Voegel JC, Schaaf P, Lavalle P. Stretch-induced biodegradation of polyelectrolyte multilayer films for drug release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:13550-13554. [PMID: 22957730 DOI: 10.1021/la302550q] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The design of stimuli-responsive polymer assemblies for the controlled release of bioactive molecules has raised considerable interest these two last decades. Herein, we report the design of mechanically responsive drug-releasing films made of polyelectrolyte multilayers. A layer-by-layer (LbL) reservoir containing biodegradable polyelectrolytes is capped with a mechanosensitive LbL barrier and responds to stretching by a total enzymatic degradation of the film. This strategy is successfully applied for the release in solution of an anticancer drug initially loaded within the architecture.
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Affiliation(s)
- Julien Barthes
- Institut National de la Santé et de la Recherche Médicale, INSERM Unité 977, 11 rue Humann, 67085 Strasbourg Cedex, France
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40
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Peterson AM, Möhwald H, Shchukin DG. pH-Controlled Release of Proteins from Polyelectrolyte-Modified Anodized Titanium Surfaces for Implant Applications. Biomacromolecules 2012; 13:3120-6. [DOI: 10.1021/bm300928s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Amy M. Peterson
- Department of Interfaces, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam-Golm,
Germany
| | - Helmuth Möhwald
- Department of Interfaces, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam-Golm,
Germany
| | - Dmitry G. Shchukin
- Department of Interfaces, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam-Golm,
Germany
- Stephenson Institute
for Renewable Energy, University of Liverpool, Liverpool L69 3BX, United Kingdom
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41
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de Saint-Aubin C, Hemmerlé J, Boulmedais F, Vallat MF, Nardin M, Schaaf P. New 2-in-1 polyelectrolyte step-by-step film buildup without solution alternation: from PEDOT-PSS to polyelectrolyte complexes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:8681-8691. [PMID: 22594657 DOI: 10.1021/la301254a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Although never emphasized and increasingly used in organic electronics, PEDOT-PSS (poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate)) layer-by-layer (lbl) film construction violates the alternation of polyanion and polycation rule stated as a prerequisit for a step-by-step film buildup. To demonstrate that this alternation is not always necessary, we studied the step-by-step construction of films using a single solution containing polycation/polyanion complexes. We investigated four different systems: PEDOT-PSS, bPEI-PSS (branched poly(ethylene imine)-poly(sodium 4-styrene sulfonate)), PDADMA-PSS (poly(diallyl dimethyl ammonium)-PSS), and PAH-PSS (poly(allylamine hydrochloride)-PSS). The film buildup obtained by spin-coating or dipping-and-drying process was monitored by ellipsometry, UV-vis-NIR spectrophotometry, and quartz-crystal microbalance. The surface morphology of the films was characterized by atomic force microscopy in tapping mode. After an initial transient regime, the different films have a linear buildup with the number of deposition steps. It appears that, when the particles composed of polyanion-polycation complex and complex aggregates in solution are more or less liquid (case of PEDOT-PSS and bPEI-PSS), our method leads to smooth films (roughness on the order of 1-2 nm). On the other hand, when these complexes are more or less solid particles (case of PDADMA-PSS and PAH-PSS), the resulting films are much rougher (typically 10 nm). Polycation/polyanion molar ratios in monomer unit of the liquid, rinsing, and drying steps are key parameters governing the film buildup process with an optimal polycation/polyanion molar ratio leading to the fastest film growth. This new and general lbl method, designated as 2-in-1 method, allows obtaining regular and controlled film buildup with a single liquid containing polyelectrolyte complexes and opens a new route for surface functionalization with polyelectrolytes.
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Affiliation(s)
- Christine de Saint-Aubin
- Centre National de la Recherche Scientifique, Institut de Science des Matériaux de Mulhouse, LRC 7228-UHA, 15 rue Jean Starcky, BP 2488, 68057 Mulhouse cedex, France
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Gribova V, Auzely-Velty R, Picart C. Polyelectrolyte Multilayer Assemblies on Materials Surfaces: From Cell Adhesion to Tissue Engineering. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2012; 24:854-869. [PMID: 25076811 PMCID: PMC4112380 DOI: 10.1021/cm2032459] [Citation(s) in RCA: 231] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Controlling the bulk and surface properties of materials is a real challenge for bioengineers working in the fields of biomaterials, tissue engineering and biophysics. The layer-by-layer (LbL) deposition method, introduced 20 years ago, consists in the alternate adsorption of polyelectrolytes that self-organize on the material's surface, leading to the formation of polyelectrolyte multilayer (PEM) films.1 Because of its simplicity and versatility, the procedure has led to considerable developments of biological applications within the past 5 years. In this review, we focus our attention on the design of PEM films as surface coatings for applications in the field of physical properties that have emerged as being key points in relation to biological processes. The numerous possibilities for adjusting the chemical, physical, and mechanical properties of PEM films have fostered studies on the influence of these parameters on cellular behaviors. Importantly, PEM have emerged as a powerful tool for the immobilization of biomolecules with preserved bioactivity.
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Affiliation(s)
- Varvara Gribova
- LMGP-MINATEC, Grenoble Institute of Technology, 3 Parvis Louis Néel, 38016 Grenoble, France
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), affiliated with University Joseph Fourier, and member of the Institut de Chimie Moléculaire de Grenoble, France
| | - Rachel Auzely-Velty
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), affiliated with University Joseph Fourier, and member of the Institut de Chimie Moléculaire de Grenoble, France
| | - Catherine Picart
- LMGP-MINATEC, Grenoble Institute of Technology, 3 Parvis Louis Néel, 38016 Grenoble, France
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43
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Go DP, Hung A, Gras SL, O’Connor AJ. Use of a Short Peptide as a Building Block in the Layer-by-Layer Assembly of Biomolecules on Polymeric Surfaces. J Phys Chem B 2012; 116:1120-33. [DOI: 10.1021/jp208898m] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Dewi P. Go
- Particulate Fluids Processing Centre, Department of Chemical and Biomolecular Engineering, University of Melbourne, Parkville 3010, Victoria, Australia
- Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Andrew Hung
- School of Applied Sciences, RMIT University, Melbourne 3001, Victoria, Australia
- Health Innovations Research Institute, RMIT University, Bundoora 3083, Victoria, Australia
| | - Sally L. Gras
- Particulate Fluids Processing Centre, Department of Chemical and Biomolecular Engineering, University of Melbourne, Parkville 3010, Victoria, Australia
- Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Andrea J. O’Connor
- Particulate Fluids Processing Centre, Department of Chemical and Biomolecular Engineering, University of Melbourne, Parkville 3010, Victoria, Australia
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Go DP, Palmer JA, Gras SL, O'Connor AJ. Coating and release of an anti-inflammatory hormone from PLGA microspheres for tissue engineering. J Biomed Mater Res A 2011; 100:507-17. [PMID: 22125254 DOI: 10.1002/jbm.a.33299] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 08/05/2011] [Accepted: 10/06/2011] [Indexed: 11/08/2022]
Abstract
Many biomaterials used in tissue engineering cause a foreign body response in vivo, which left untreated can severely reduce the effectiveness of tissue regeneration. In this study, an anti-inflammatory hormone α-melanocyte stimulating hormone (α-MSH) was physically adsorbed to the surface of biodegradable poly (lactic-co-glycolic) acid (PLGA) microspheres to reduce inflammatory responses to this material. The stability and adsorption isotherm of peptide binding were characterized. The peptide secondary structure was not perturbed by the adsorption and subsequent desorption process. The α-MSH payload was released over 72 h and reduced the expression of the inflammatory cytokine, Tumor necrosis factor-α (TNF-α) in lipopolysaccharide activated RAW 264.7 macrophage cells, indicating that the biological activity of α-MSH was preserved. α-MSH coated PLGA microspheres also appeared to reduce the influx of inflammatory cells in a subcutaneous implantation model in rats. This study demonstrates the potential of α-MSH coatings for anti-inflammatory delivery and this approach may be applied to other tissue engineering applications.
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Affiliation(s)
- Dewi P Go
- Department of Chemical and Biomolecular Engineering, Particulate Fluids Processing Centre, University of Melbourne, Parkville 3010, Victoria, Australia; Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, Victoria, Australia
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Plewa A, Niemiec W, Filipowska J, Osyczka AM, Lach R, Szczubiałka K, Nowakowska M. Photocrosslinkable diazoresin/pectin films – Synthesis and application as cell culture supports. Eur Polym J 2011. [DOI: 10.1016/j.eurpolymj.2011.06.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Hybrid titanium/biodegradable polymer implants with an hierarchical pore structure as a means to control selective cell movement. PLoS One 2011; 6:e20480. [PMID: 21637824 PMCID: PMC3102721 DOI: 10.1371/journal.pone.0020480] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2011] [Accepted: 04/27/2011] [Indexed: 01/28/2023] Open
Abstract
UNLABELLED In order to improve implant success rate, it is important to enhance their responsiveness to the prevailing conditions following implantation. Uncontrolled movement of inflammatory cells and fibroblasts is one of these in vivo problems and the porosity properties of the implant have a strong effect on these. Here, we describe a hybrid system composed of a macroporous titanium structure filled with a microporous biodegradable polymer. This polymer matrix has a distinct porosity gradient to accommodate different cell types (fibroblasts and epithelial cells). The main clinical application of this system will be the prevention of restenosis due to excessive fibroblast migration and proliferation in the case of tracheal implants. METHODOLOGY/PRINCIPAL FINDINGS A microbead-based titanium template was filled with a porous Poly (L-lactic acid) (PLLA) body by freeze-extraction method. A distinct porosity difference was obtained between the inner and outer surfaces of the implant as characterized by image analysis and Mercury porosimetry (9.8±2.2 µm vs. 36.7±11.4 µm, p≤0.05). On top, a thin PLLA film was added to optimize the growth of epithelial cells, which was confirmed by using human respiratory epithelial cells. To check the control of fibroblast movement, PKH26 labeled fibroblasts were seeded onto Titanium and Titanium/PLLA implants. The cell movement was quantified by confocal microscopy: in one week cells moved deeper in Ti samples compared to Ti/PLLA. CONCLUSIONS In vitro experiments showed that this new implant is effective for guiding different kind of cells it will contact upon implantation. Overall, this system would enable spatial and temporal control over cell migration by a gradient ranging from macroporosity to nanoporosity within a tracheal implant. Moreover, mechanical properties will be dependent mainly on the titanium frame. This will make it possible to create a polymeric environment which is suitable for cells without the need to meet mechanical requirements with the polymeric structure.
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Detzel CJ, Larkin AL, Rajagopalan P. Polyelectrolyte multilayers in tissue engineering. TISSUE ENGINEERING. PART B, REVIEWS 2011; 17:101-13. [PMID: 21210759 PMCID: PMC3062467 DOI: 10.1089/ten.teb.2010.0548] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Accepted: 01/03/2011] [Indexed: 11/13/2022]
Abstract
The layer-by-layer assembly of sequentially adsorbed, alternating polyelectrolytes has become increasingly important over the past two decades. The ease and versatility in assembling polyelectrolyte multilayers (PEMs) has resulted in numerous wide ranging applications of these materials. More recently, PEMs are being used in biological applications ranging from biomaterials, tissue engineering, regenerative medicine, and drug delivery. The ability to manipulate the chemical, physical, surface, and topographical properties of these multilayer architectures by simply changing the pH, ionic strength, thickness, and postassembly modifications render them highly suitable to probe the effects of external stimuli on cellular responsiveness. In the field of regenerative medicine, the ability to sequester growth factors and to tether peptides to PEMs has been exploited to direct the lineage of progenitor cells and to subsequently maintain a desired phenotype. Additional novel applications include the use of PEMs in the assembly of three-dimensional layered architectures and as coatings for individual cells to deliver tunable payloads of drugs or bioactive molecules. This review focuses on literature related to the modulation of chemical and physical properties of PEMs for tissue engineering applications and recent research efforts in maintaining and directing cellular phenotype in stem cell differentiation.
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Affiliation(s)
- Christopher J. Detzel
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
| | - Adam L. Larkin
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
| | - Padmavathy Rajagopalan
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
- ICTAS Center for Systems Biology of Engineered Tissues, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
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ANGWARAWONG T, DUBAS ST, ARKSORNNUKIT M, PAVASANT P. Differentiation of MC3T3-E1 on poly(4-styrenesulfonic acid-co-maleic acid)sodium salt-coated films. Dent Mater J 2011; 30:158-69. [DOI: 10.4012/dmj.2010-097] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Guillame-Gentil O, Semenov O, Roca AS, Groth T, Zahn R, Vörös J, Zenobi-Wong M. Engineering the extracellular environment: Strategies for building 2D and 3D cellular structures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:5443-62. [PMID: 20842659 DOI: 10.1002/adma.201001747] [Citation(s) in RCA: 119] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Indexed: 05/22/2023]
Abstract
Cell fate is regulated by extracellular environmental signals. Receptor specific interaction of the cell with proteins, glycans, soluble factors as well as neighboring cells can steer cells towards proliferation, differentiation, apoptosis or migration. In this review, approaches to build cellular structures by engineering aspects of the extracellular environment are described. These methods include non-specific modifications to control the wettability and stiffness of surfaces using self-assembled monolayers (SAMs) and polyelectrolyte multilayers (PEMs) as well as methods where the temporal activation and spatial distribution of adhesion ligands is controlled. Building on these techniques, construction of two-dimensional cell sheets using temperature sensitive polymers or electrochemical dissolution is described together with current applications of these grafts in the clinical arena. Finally, methods to pattern cells in three-dimensions as well as to functionalize the 3D environment with biologic motifs take us one step closer to being able to engineer multicellular tissues and organs.
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