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Huang J, Lin L, Sun D, Chen H, Yang D, Li Q. Bio-inspired synthesis of metal nanomaterials and applications. Chem Soc Rev 2015; 44:6330-74. [PMID: 26083903 DOI: 10.1039/c5cs00133a] [Citation(s) in RCA: 243] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This critical review focuses on recent advances in the bio-inspired synthesis of metal nanomaterials (MNMs) using microorganisms, viruses, plants, proteins and DNA molecules as well as their applications in various fields. Prospects in the design of bio-inspired MNMs for novel applications are also discussed.
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Affiliation(s)
- Jiale Huang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, and National Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters, Xiamen University, Xiamen, P. R. China.
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52
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Li X, Wang H, Rong H, Li W, Luo Y, Tian K, Quan D, Wang Y, Jiang L. Effect of composite SiO₂@AuNPs on wound healing: in vitro and vivo studies. J Colloid Interface Sci 2015; 445:312-319. [PMID: 25635605 DOI: 10.1016/j.jcis.2014.12.084] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 12/24/2014] [Accepted: 12/24/2014] [Indexed: 12/19/2022]
Abstract
Recently gold nanomaterials have been widely applied in the biomedical field, but their biosafety is still controversial. We immobilized small gold nanoparticles (AuNPs) on a large silica substrate to form silica-gold core-shell materials (SiO2@AuNPs) via classical seed-mediated growth. In vitro, 500 nm-SiO2@AuNPs could promote the proliferation of mouse embryonic fibroblast cells (NIH/3T3). The results of transmission electron microscope (TEM) showed that the vast majority of particles did not enter cells and that the morphology of microtubules experienced no change as observed in the confocal microscope images. The mechanism may be that the large silica substrate kept AuNPs outside the cells and the nano-size concavo-convex gold shell facilitated to cell adhesion, resulting in the proliferation. In vivo, a cutaneous full-thickness excisional wound rat model was applied to assess the healing efficiency of 500 nm-SiO2@AuNPs. The results indicated that SiO2@AuNPs could promote wound healing, which was potentially related to the anti-inflammatory and antioxidation of AuNPs. The pathological finding showed that the healing levels of SiO2@AuNPs were significantly better than those of the control groups. Our study may provide insight into the application of silica-gold core-shell materials in the treatment of cutaneous wounds.
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Affiliation(s)
- Xiaoqin Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloids and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Haifei Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloids and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Huilin Rong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloids and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Wanhua Li
- Institutes of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, People's Republic of China
| | - Yuan Luo
- Institutes of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, People's Republic of China
| | - Kai Tian
- Institutes of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, People's Republic of China
| | - Dongqin Quan
- Institutes of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, People's Republic of China
| | - Yongan Wang
- Institutes of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, People's Republic of China.
| | - Long Jiang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloids and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
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53
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3D multi-channel bi-functionalized silk electrospun conduits for peripheral nerve regeneration. J Mech Behav Biomed Mater 2015; 41:43-55. [DOI: 10.1016/j.jmbbm.2014.09.029] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/25/2014] [Accepted: 09/30/2014] [Indexed: 12/21/2022]
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54
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Zhang P, Lan J, Wang Y, Xiong ZH, Huang CZ. Luminescent golden silk and fabric through in situ chemically coating pristine-silk with gold nanoclusters. Biomaterials 2015; 36:26-32. [DOI: 10.1016/j.biomaterials.2014.08.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 08/15/2014] [Indexed: 10/24/2022]
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55
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Guo C, Hall GN, Addison JB, Yarger JL. Gold nanoparticle-doped silk film as biocompatible SERS substrate. RSC Adv 2015. [DOI: 10.1039/c4ra11051j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, we present a novel rapid method for fabricating biocompatible, biodegradable gold nanoparticle-embedded silk films (AuNP–silk films) that have potential applications in bioengineering and biomedical research.
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Affiliation(s)
- Chengchen Guo
- Department of Chemistry and Biochemistry
- Magnetic Resonance Research Center
- Arizona State University
- Tempe
- USA
| | - Genevieve N. Hall
- Department of Chemistry and Biochemistry
- Magnetic Resonance Research Center
- Arizona State University
- Tempe
- USA
| | - John B. Addison
- Department of Chemistry and Biochemistry
- Magnetic Resonance Research Center
- Arizona State University
- Tempe
- USA
| | - Jeffery L. Yarger
- Department of Chemistry and Biochemistry
- Magnetic Resonance Research Center
- Arizona State University
- Tempe
- USA
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56
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Bowers DT, Tanes ML, Das A, Lin Y, Keane NA, Neal RA, Ogle ME, Brayman KL, Fraser CL, Botchwey EA. Spatiotemporal oxygen sensing using dual emissive boron dye-polylactide nanofibers. ACS NANO 2014; 8:12080-91. [PMID: 25426706 PMCID: PMC4278692 DOI: 10.1021/nn504332j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Oxygenation in tissue scaffolds continues to be a limiting factor in regenerative medicine despite efforts to induce neovascularization or to use oxygen-generating materials. Unfortunately, many established methods to measure oxygen concentration, such as using electrodes, require mechanical disturbance of the tissue structure. To address the need for scaffold-based oxygen concentration monitoring, a single-component, self-referenced oxygen sensor was made into nanofibers. Electrospinning process parameters were tuned to produce a biomaterial scaffold with specific morphological features. The ratio of an oxygen sensitive phosphorescence signal to an oxygen insensitive fluorescence signal was calculated at each image pixel to determine an oxygenation value. A single component boron dye-polymer conjugate was chosen for additional investigation due to improved resistance to degradation in aqueous media compared to a boron dye polymer blend. Standardization curves show that in fully supplemented media, the fibers are responsive to dissolved oxygen concentrations less than 15 ppm. Spatial (millimeters) and temporal (minutes) ratiometric gradients were observed in vitro radiating outward from the center of a dense adherent cell grouping on scaffolds. Sensor activation in ischemia and cell transplant models in vivo show oxygenation decreases on the scale of minutes. The nanofiber construct offers a robust approach to biomaterial scaffold oxygen sensing.
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Affiliation(s)
- Daniel T. Bowers
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Michael L. Tanes
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Anusuya Das
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
- Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Yong Lin
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Nicole A. Keane
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Rebekah A. Neal
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Molly E. Ogle
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Kenneth L. Brayman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
- Department of Surgery, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Cassandra L. Fraser
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Edward A. Botchwey
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- Address correspondence to
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57
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Dinis TM, Elia R, Vidal G, Auffret A, Kaplan DL, Egles C. Method to form a fiber/growth factor dual-gradient along electrospun silk for nerve regeneration. ACS APPLIED MATERIALS & INTERFACES 2014; 6:16817-16826. [PMID: 25203247 DOI: 10.1021/am504159j] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Concentration gradients of guidance molecules influence cell behavior and growth in biological tissues and are therefore of interest for the design of biomedical scaffolds for regenerative medicine. We developed an electrospining method to generate a dual-gradient of bioactive molecules and fiber density along electrospun nanofibers without any post spinning treatment. Functionalization with fluorescent molecules demonstrated the efficiency of the method to generate a discontinuous concentration gradient along the aligned fibers. As a proof of concept for tissue engineering, the silk nanofibers were functionalized with increasing concentrations of nerve growth factor (NGF) and the biological activity was assessed and quantified with rat dorsal root ganglion (DRG) neurons cultures. Protein assays showed the absence of passive release of NGF from the functionalized fibers. The results demonstrated that the NGF concentration gradient led to an oriented and increased growth of DRG neurons (417.6 ± 55.7 μm) compared to a single uniform NGF concentration (264.5 ± 37.6 μm). The easy-to-use electrospinning technique combined with the multiple molecules that can be used for fiber functionalization makes this technique versatile for a broad range of applications from biosensors to regenerative medicine.
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Affiliation(s)
- Tony M Dinis
- CNRS UMR 7338: BioMécanique et BioIngénierie Centre de recherche, Université de Technologie de Compiègne , BP 20529 Rue Personne de Roberval, 60205 Compiègne, France
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58
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A silica-gold core-shell structure to mimic the large size of gold particles for promoting cell growth: A comparative study of the silica core size and the nanogold amount in the shell. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.07.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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59
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Fleischer S, Shevach M, Feiner R, Dvir T. Coiled fiber scaffolds embedded with gold nanoparticles improve the performance of engineered cardiac tissues. NANOSCALE 2014; 6:9410-9414. [PMID: 24744098 DOI: 10.1039/c4nr00300d] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Coiled perimysial fibers within the heart muscle provide it with the ability to contract and relax efficiently. Here, we report on a new nanocomposite scaffold for cardiac tissue engineering, integrating coiled electrospun fibers with gold nanoparticles. Cultivation of cardiac cells within the hybrid scaffolds promoted cell organization into elongated and aligned tissues generating a strong contraction force, high contraction rate and low excitation threshold.
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Affiliation(s)
- Sharon Fleischer
- The Laboratory for Tissue Engineering and Regenerative Medicine, Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel.
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60
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Jeong Y, Chen YC, Turksoy MK, Rana S, Tonga GY, Creran B, Sanyal A, Crosby AJ, Rotello VM. Tunable elastic modulus of nanoparticle monolayer films by host-guest chemistry. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5056-61. [PMID: 24889993 DOI: 10.1002/adma.201401226] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 05/02/2014] [Indexed: 05/21/2023]
Abstract
The elastic modulus of an ultrathin nanoparticle (NP) monolayer film is tuned by modulating the binding strength between the NPs on a molecular level. NP monolayer films constructed by crosslinking NPs of different binding affinities are fabricated at oil/water interfaces. By inducing buckling patterns on these films, the correlation between the binding affinity of the NPs and the elastic modulus is investigated.
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Affiliation(s)
- Youngdo Jeong
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, Massachusetts, 01003, USA
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61
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Ravichandran R, Sridhar R, Venugopal JR, Sundarrajan S, Mukherjee S, Ramakrishna S. Gold nanoparticle loaded hybrid nanofibers for cardiogenic differentiation of stem cells for infarcted myocardium regeneration. Macromol Biosci 2013; 14:515-25. [PMID: 24327549 DOI: 10.1002/mabi.201300407] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 10/10/2013] [Indexed: 11/11/2022]
Abstract
Heart disease is the leading cause of mortality in many industrialized nations and is often related to irregularities in electrical function that can radically damage cardiac functioning. The aim of this study is to develop a novel therapeutic hybrid scaffold that can couple electrical, mechanical, and biological properties, desirable for cardiac tissue regeneration. BSA/PVA scaffolds are fabricated in the ratio 2:1 and gold nanoparticles (AuNPs) embedded scaffolds in the ratios BSA/PVA/Au of 2:1:0.1 (lower concentration) and BSA/PVA/Au of 2:1:0.4 (higher concentration) by electrospinning. The scaffolds are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), contact angle, Fourier transform infrared (FTIR) spectroscopy, and tensile testing to analyze the fiber morphology, AuNP distribution, hydrophilicity, surface functional groups, and mechanical properties of the scaffolds, respectively. Results show that ex vivo pretreatment of MSCs using 5-aza and AuNPs loaded conductive nanofibrous construct could lead to enhanced cardiomyogenic differentiation and result in superior biological and functional effects on infarcted myocardium regeneration.
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Affiliation(s)
- Rajeswari Ravichandran
- Healthcare and Energy Materials Laboratory, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore; Department of Mechanical Engineering, National University of Singapore, Singapore, 117576, Singapore
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62
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Cohen-Karni T, Dvir T. Advanced Technologies for Engineering Tissue Mimetics. Isr J Chem 2013. [DOI: 10.1002/ijch.201300067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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63
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Pinho AC, Piedade AP. Zeta potential, contact angles, and AFM imaging of protein conformation adsorbed on hybrid nanocomposite surfaces. ACS APPLIED MATERIALS & INTERFACES 2013; 5:8187-8194. [PMID: 23899633 DOI: 10.1021/am402302r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The sputtering deposition of gold (Au) and poly(tetrafluoroethylene) (PTFE) was used to prepare a nanocomposite hybrid thin film suitable for protein adsorption while maintaining the native conformation of the biological material. The monolithic PTFE and the nanocomposite PTFE/Au thin films, with Au content up to 1 at %, were co-deposited by r.f. magnetron sputtering using argon as a discharge gas and deposited onto 316L stainless steel substrates, the most commonly used steel in biomaterials. The deposited thin films, before and after bovine serum albumin (BSA) adsorption, were thoroughly characterized with special emphasis on the surface properties/characteristics by atomic force microscopy (AFM), zeta potential, and static and dynamic contact angle measurements, in order to assess the relationship between structure and conformational changes. The influence of a pre-adsorbed peptide (RGD) was also evaluated. The nanotopographic and chemical changes induced by the presence of gold in the nanocomposite thin films enable RGD bonding, which is critical for the maintenance of the BSA native conformation after adsorption.
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Affiliation(s)
- Ana C Pinho
- CEMUC-GNM, Department of Mechanical Engineering, University of Coimbra, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal
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64
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Tissue engineering on the nanoscale: lessons from the heart. Curr Opin Biotechnol 2013; 24:664-71. [DOI: 10.1016/j.copbio.2012.10.016] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 10/22/2012] [Indexed: 01/01/2023]
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65
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Nanowire nanoelectronics: Building interfaces with tissue and cells at the natural scale of biology. PURE APPL CHEM 2013. [DOI: 10.1351/pac-con-12-10-19] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The interface between nanoscale electronic devices and biological systems enables interactions at length scales natural to biology, and thus should maximize communication between these two diverse yet complementary systems. Moreover, nanostructures and nanostructured substrates show enhanced coupling to artificial membranes, cells, and tissue. Such nano–bio interfaces offer better sensitivity and spatial resolution as compared to conventional planar structures. In this work, we will report the electrical properties of silicon nanowires (SiNWs) interfaced with embryonic chicken hearts and cultured cardiomyocytes. We developed a scheme that allowed us to manipulate the nanoelectronic to tissue/cell interfaces while monitoring their electrical activity. In addition, by utilizing the bottom-up approach, we extended our work to the subcellular regime, and interfaced cells with the smallest reported device ever and thus exceeded the spatial and temporal resolution limits of other electrical recording techniques. The exceptional synthetic control and flexible assembly of nanowires (NWs) provides powerful tools for fundamental studies and applications in life science, and opens up the potential of merging active transistors with cells such that the distinction between nonliving and living systems is blurred.
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66
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Shevach M, Maoz BM, Feiner R, Shapira A, Dvir T. Nanoengineering gold particle composite fibers for cardiac tissue engineering. J Mater Chem B 2013; 1:5210-5217. [DOI: 10.1039/c3tb20584c] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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