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Biomedical applications of solid-binding peptides and proteins. Mater Today Bio 2023; 19:100580. [PMID: 36846310 PMCID: PMC9950531 DOI: 10.1016/j.mtbio.2023.100580] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
Over the past decades, solid-binding peptides (SBPs) have found multiple applications in materials science. In non-covalent surface modification strategies, solid-binding peptides are a simple and versatile tool for the immobilization of biomolecules on a vast variety of solid surfaces. Especially in physiological environments, SBPs can increase the biocompatibility of hybrid materials and offer tunable properties for the display of biomolecules with minimal impact on their functionality. All these features make SBPs attractive for the manufacturing of bioinspired materials in diagnostic and therapeutic applications. In particular, biomedical applications such as drug delivery, biosensing, and regenerative therapies have benefited from the introduction of SBPs. Here, we review recent literature on the use of solid-binding peptides and solid-binding proteins in biomedical applications. We focus on applications where modulating the interactions between solid materials and biomolecules is crucial. In this review, we describe solid-binding peptides and proteins, providing background on sequence design and binding mechanism. We then discuss their application on materials relevant for biomedicine (calcium phosphates, silicates, ice crystals, metals, plastics, and graphene). Although the limited characterization of SBPs still represents a challenge for their design and widespread application, our review shows that SBP-mediated bioconjugation can be easily introduced into complex designs and on nanomaterials with very different surface chemistries.
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2
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Nanocomposite electrospun fibers of poly(ε-caprolactone)/bioactive glass with shape memory properties. Bioact Mater 2022; 11:230-239. [PMID: 34977428 PMCID: PMC8668438 DOI: 10.1016/j.bioactmat.2021.09.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 02/06/2023] Open
Abstract
Electrospun fibers of shape memory triethoxysilane-terminated poly(epsilon-caprolactone) (PCL-TES) loaded with bioactive glasses (BG) are here presented. Unloaded PCL-TES, as well as PCL/BG nanocomposite fibers, are also considered for comparison. It is proposed that hydrolysis and condensation reactions take place between triethoxysilane groups of the polymer and the silanol groups at the BG particle surface, thus generating additional crosslinking points with respect to those present in the PCL-TES system. The as-spun PCL-TES/BG fibers display excellent shape memory properties, in terms of shape fixity and shape recovery ratios, without the need of a thermal crosslinking treatment. BG particles confer in vitro bioactivity to PCL-based nanocomposite fibers and favor the precipitation of hydroxycarbonate apatite on the fiber surface. Preliminary cytocompatibility tests demonstrate that the addition of BG particles to PCL-based polymer does not inhibit ST-2 cell viability. This novel approach of using bioactive glasses not only for their biological properties, but also for the enhancement of shape memory properties of PCL-based polymers, widens the versatility and suitability of the obtained composite fibers for a huge portfolio of biomedical applications.
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3
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Development and Application of 3D Bioprinted Scaffolds Supporting Induced Pluripotent Stem Cells. BIOMED RESEARCH INTERNATIONAL 2021; 2021:4910816. [PMID: 34552987 PMCID: PMC8452409 DOI: 10.1155/2021/4910816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 08/06/2021] [Indexed: 12/18/2022]
Abstract
Three-dimensional (3D) bioprinting is a revolutionary technology that replicates 3D functional living tissue scaffolds in vitro by controlling the layer-by-layer deposition of biomaterials and enables highly precise positioning of cells. With the development of this technology, more advanced research on the mechanisms of tissue morphogenesis, clinical drug screening, and organ regeneration may be pursued. Because of their self-renewal characteristics and multidirectional differentiation potential, induced pluripotent stem cells (iPSCs) have outstanding advantages in stem cell research and applications. In this review, we discuss the advantages of different bioinks containing human iPSCs that are fabricated by using 3D bioprinting. In particular, we focus on the ability of these bioinks to support iPSCs and promote their proliferation and differentiation. In addition, we summarize the applications of 3D bioprinting with iPSC-containing bioinks and put forward new views on the current research status.
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4
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Hua J, Liu C, Ng PF, Fei B. Bacterial cellulose reinforced double-network hydrogels for shape memory strand. Carbohydr Polym 2021; 259:117737. [DOI: 10.1016/j.carbpol.2021.117737] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 01/20/2021] [Accepted: 01/25/2021] [Indexed: 10/22/2022]
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5
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Kumar B, Noor N, Thakur S, Pan N, Narayana H, Yan SC, Wang F, Shah P. Shape Memory Polyurethane-Based Smart Polymer Substrates for Physiologically Responsive, Dynamic Pressure (Re)Distribution. ACS OMEGA 2019; 4:15348-15358. [PMID: 31572833 PMCID: PMC6761750 DOI: 10.1021/acsomega.9b01167] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
Shape memory polymers (SMPs) are an exciting class of stimuli-responsive smart materials that demonstrate reactive and reversible changes in mechanical property, usually by switching between different states due to external stimuli. We report on the development of a polyurethane-based SMP foam for effective pressure redistribution that demonstrates controllable changes in dynamic pressure redistribution capability at a low transition temperature (∼24 °C)-ideally suited to matching modulations in body contact pressure for dynamic pressure relief (e.g., for alleviation or pressure ulcer effects). The resultant SMP material has been extensively characterized by a series of tests including stress-strain testing, compression testing, dynamic mechanical analysis, optical microscopy, UV-visible absorbance spectroscopy, variable-temperature areal pressure distribution, Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, differential scanning calorimetry, dynamic thermogravimetric analysis, and 1H nuclear magnetic resonance spectroscopy. The foam system exhibits high responsivity when tested for plantar pressure modulation with significant potential in pressure ulcers treatment. Efficient pressure redistribution (∼80% reduction in interface pressure), high stress response (∼30% applied stress is stored in fixity and released on recovery), and excellent deformation recovery (∼100%) are demonstrated in addition to significant cycling ability without performance loss. By providing highly effective pressure redistribution and modulation when in contact with the body's surface, this SMP foam offers novel mechanisms for alleviating the risk of pressure ulcers.
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Affiliation(s)
- Bipin Kumar
- Department of Textile Technology, Indian
Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Nuruzzaman Noor
- Institute of Textiles and Clothing, University Research
Facility in Chemical and Environmental Analysis, and School of Design, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Suman Thakur
- Institute of Textiles and Clothing, University Research
Facility in Chemical and Environmental Analysis, and School of Design, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Ning Pan
- Biological & Agricultural Engineering, UC Davis, Davis, California 95616, United States
| | - Harishkumar Narayana
- Institute of Textiles and Clothing, University Research
Facility in Chemical and Environmental Analysis, and School of Design, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Siu-cheong Yan
- Institute of Textiles and Clothing, University Research
Facility in Chemical and Environmental Analysis, and School of Design, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Faming Wang
- Institute of Textiles and Clothing, University Research
Facility in Chemical and Environmental Analysis, and School of Design, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Parth Shah
- Institute of Textiles and Clothing, University Research
Facility in Chemical and Environmental Analysis, and School of Design, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
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6
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YUCA ESRA, TAMERLER CANDAN. Self Assembled Recombinant Proteins on Metallic Nanoparticles As Bimodal Imaging Probes. JOM (WARRENDALE, PA. : 1989) 2019; 71:1281-1290. [PMID: 34149269 PMCID: PMC8211090 DOI: 10.1007/s11837-018-03325-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 12/28/2018] [Indexed: 05/12/2023]
Abstract
Combining multiple modalities is at the center of developing new methods for sensing and imaging that are required for comprehensive understanding of events at the molecular level. Various imaging modalities have been developed using metallic nanoparticles owning to their exceptional physical and chemical properties. Due to their localized surface plasmon resonance characteristics, gold and silver nanoparticles exhibit unique optoelectronic properties commonly used in biomedical sciences and engineering. Self assembled monolayers or physical adsorption have previously been adapted to functionalize the surfaces of nanoparticles with biomolecules for targeted imaging. However, depending on differences among the functional groups used on the nanoparticle surface, wide variation in the displayed biomolecular property to recognize its target may result. In the last decade, the properties of inorganic binding peptides have been proven advantageous to assemble selective functional nano-entities or proteins onto nanoparticles surfaces. Herein we explored formation of self-assembled hybrid metallic nano-architectures that are composed of gold and silver nanoparticles with fluorescent proteins, for use as bimodal imaging probes. We employed metal binding peptide-based assembly to self assemble green fluorescence protein onto metallic substrates of various geometries. Assembly of the green fluorescent proteins, genetically engineered to incorporate gold- or silver-binding peptides onto metallic nanoparticles, resulted in the generation of hybrid-, biomodal-imaging probes in a single step. Green fluorescent activity on gold and silver surfaces can be been monitored using both plasmonic and fluorescent signatures. Our results demonstrate a novel bimodal imaging system that can be finely tuned with respect to nanoparticle size and protein concentration. Resulting hybrid probes may mitigate the limitation of depth penetration into biological tissues as well as providing high signal-to-noise ratio and sensitivity.
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Affiliation(s)
- ESRA YUCA
- Institute for Bioengineering Research, University of Kansas, Lawrence-KS, 66045, USA
- Molecular Biology and Genetics, Yildiz Technical University, Istanbul 34210, Turkey
| | - CANDAN TAMERLER
- Institute for Bioengineering Research, University of Kansas, Lawrence-KS, 66045, USA
- Bioengineering Program, University of Kansas, Lawrence-KS, 66045, USA
- Mechanical Engineering, University of Kansas, Lawrence, KS 66045, USA
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7
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Hong X, Harker A, Edirisinghe M. Process Modeling for the Fiber Diameter of Polymer, Spun by Pressure-Coupled Infusion Gyration. ACS OMEGA 2018; 3:5470-5479. [PMID: 31458751 PMCID: PMC6641922 DOI: 10.1021/acsomega.8b00452] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 05/02/2018] [Indexed: 06/10/2023]
Abstract
Several new spinning methods have been developed recently to mass produce polymeric fibers. Pressure-coupled infusion gyration is one of them. Because the fiber diameter plays a pivotal role for the mechanical, electrical, and optical properties of the produced fiber mats, in this work, polyethylene oxide is used as a model polymer, and the processing parameters including polymer concentration, infusion (flow) rate, working pressure, and rotational speed are chosen as variables to control fiber diameters spanning the micro- to nanoscale. The experimental process is modeled using response surface methodology, both in linear and nonlinear fitting formats, to allow optimization of processing parameters. The successes of the fitted models are evaluated using adjusted R 2 and Akaike information criterion. A systematic description of the experimental process could be obtained according to the model in this study. From the analysis of variance, it is concluded that the polymer concentration of the solution and the working pressure affected the fiber diameters more strongly than other parameters.
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Affiliation(s)
- Xianze Hong
- Department
of Mechanical Engineering, University College
London (UCL), Torrington
Place, London WC1E 7JE, U.K.
| | - Anthony Harker
- Department
of Physics and Astronomy, University College
London (UCL), Gower Street, London WC1E 6BT, U.K.
| | - Mohan Edirisinghe
- Department
of Mechanical Engineering, University College
London (UCL), Torrington
Place, London WC1E 7JE, U.K.
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8
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Brako F, Raimi-Abraham BT, Mahalingam S, Craig DQM, Edirisinghe M. The development of progesterone-loaded nanofibers using pressurized gyration: A novel approach to vaginal delivery for the prevention of pre-term birth. Int J Pharm 2018; 540:31-39. [PMID: 29408268 DOI: 10.1016/j.ijpharm.2018.01.043] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/22/2018] [Accepted: 01/22/2018] [Indexed: 01/16/2023]
Abstract
Recent evidence has continued to support the applicability of progesterone in preventing preterm birth, hence the development of an appropriate vaginal delivery system for this drug would be of considerable interest. Here, we describe the development of progesterone-loaded bioadhesive nanofibers using pressurized gyration for potential incorporation into a vaginal insert, with a particular view to addressing the challenges of incorporating a poorly water-soluble drug into a hydrophilic nanofiber carrier. Polyethylene oxide and carboxymethyl cellulose were chosen as polymers to develop the carrier systems, based on previous evidence of their yielding mucoadhesive nanofibers using the pressurized gyration technique. The fabrication parameters such as solvent system, initial drug loading and polymer composition were varied to facilitate optimisation of fiber structure and efficiency of drug incorporation. Such studies resulted in the formation of nanofibers with satisfactory surface appearance, diameters in the region of 400 nm and loading of up to 25% progesterone. Thermal and spectroscopic analyses indicated that the drug was incorporated in a nanocrystalline state. Release from the drug-loaded fibers indicated comparable rates of progesterone dissolution to that of Cyclogest, a commercially available progesterone pessary, allowing release over a period of hours. Overall, the study has shown that pressurized gyration may produce bioadhesive progesterone-loaded nanofibers which have satisfactory loading of a poorly water-soluble drug as well as having suitable structural and release properties. The technique is also capable of producing fibers at a yield commensurate with practical applicability, hence we believe that the approach shows considerable promise for the development of progesterone dosage forms for vaginal application.
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Affiliation(s)
- Francis Brako
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.
| | | | | | - Duncan Q M Craig
- University College London School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK.
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.
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9
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Baudequin T, Tabrizian M. Multilineage Constructs for Scaffold-Based Tissue Engineering: A Review of Tissue-Specific Challenges. Adv Healthc Mater 2018; 7. [PMID: 29193897 DOI: 10.1002/adhm.201700734] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 09/28/2017] [Indexed: 12/11/2022]
Abstract
There is a growing interest in the regeneration of tissue in interfacial regions, where biological, physical, and chemical attributes vary across tissue type. The simultaneous use of distinct cell lineages can help in developing in vitro structures, analogous to native composite tissues. This literature review gathers the recent reports that have investigated multiple cell types of various sources and lineages in a coculture system for tissue-engineered constructs. Such studies aim at mimicking the native organization of tissues and their interfaces, and/or to improve the development of complex tissue substitutes. This paper thus distinguishes itself from those focusing on technical aspects of coculturing for a single specific tissue. The first part of this review is dedicated to variables of cocultured tissue engineering such as scaffold, cells, and in vitro culture environment. Next, tissue-specific coculture methods and approaches are covered for the most studied tissues. Finally, cross-analysis is performed to highlight emerging trends in coculture principles and to discuss how tissue-specific challenges can inspire new approaches for regeneration of different interfaces to improve the outcomes of various tissue engineering strategies.
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Affiliation(s)
- Timothée Baudequin
- Faculty of Medicine; Biomat'X Laboratory; Department of Biomedical Engineering; McGill University; 740 ave. Dr. Penfield, Room 4300 Montréal QC H3A 0G1 Québec Canada
| | - Maryam Tabrizian
- Faculty of Medicine; Biomat'X Laboratory; Department of Biomedical Engineering; McGill University; 740 ave. Dr. Penfield, Room 4300 Montréal QC H3A 0G1 Québec Canada
- Faculty of Dentistry; McGill University; 3775 rue University, Room 313/308B Montréal QC H3A 2B4 Québec Canada
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10
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Zhou Q, Zhang H, Zhou Y, Yu Z, Yuan H, Feng B, van Rijn P, Zhang Y. Alkali-Mediated Miscibility of Gelatin/Polycaprolactone for Electrospinning Homogeneous Composite Nanofibers for Tissue Scaffolding. Macromol Biosci 2017; 17. [PMID: 29068545 DOI: 10.1002/mabi.201700268] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/12/2017] [Indexed: 11/12/2022]
Abstract
Electrospun natural-synthetic composite nanofibers, which possess favorable biological and mechanical properties, have gained widespread attention in tissue engineering. However, the development of biomimetic nanofibers of hybrids remains a huge challenge due to phase separation of the polymer blends. Here, aqueous sodium hydroxide (NaOH) solution is proposed to modulate the miscibility of a representative natural-synthetic hybrid of gelatin (GT) and polycaprolactone (PCL) for electrospinning homogeneous composite nanofibers. Alkali-doped GT/PCL solutions and nanofibers examined at macroscopic, microscopic, and internal molecular levels demonstrate appropriate miscibility of GT and PCL after introducing the alkali dopant. Particularly, homogeneous GT/PCL nanofibers with smooth surface and uniform diameter are obtained when aqueous NaOH solution with a concentration of 10 m is used. The fibers become more hydrophilic and possess improved mechanical properties both in dry and wet conditions. Moreover, biocompatibility experiments show that stem cells adhere to and proliferate better on the alkali-modified nanofibers than the untreated one. This study provides a facile and effective approach to solve the phase separation issue of the synthetic-natural hybrid GT/PCL and establishes a correlation of compositionally and morphologically homogeneous composite nanofibers with respect to cell responses.
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Affiliation(s)
- Qihui Zhou
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.,Department of Biomedical Engineering-FB40, W.J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, University of GroningenUniversity Medical Center Groningen, A. Deusinglaan 1,, 9713, AV Groningen, The Netherlands
| | - Huilan Zhang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Ya Zhou
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Zhepao Yu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Huihua Yuan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.,School of Life Sciences, Nantong University, Nantong, Jiangsu, 226019, China
| | - Bei Feng
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Patrick van Rijn
- Department of Biomedical Engineering-FB40, W.J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, University of GroningenUniversity Medical Center Groningen, A. Deusinglaan 1,, 9713, AV Groningen, The Netherlands
| | - Yanzhong Zhang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.,China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, 310058, China
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11
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Forget A, Blaeser A, Miessmer F, Köpf M, Campos DFD, Voelcker NH, Blencowe A, Fischer H, Shastri VP. Mechanically Tunable Bioink for 3D Bioprinting of Human Cells. Adv Healthc Mater 2017; 6. [PMID: 28731220 DOI: 10.1002/adhm.201700255] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/17/2017] [Indexed: 12/13/2022]
Abstract
This study introduces a thermogelling bioink based on carboxylated agarose (CA) for bioprinting of mechanically defined microenvironments mimicking natural tissues. In CA system, by adjusting the degree of carboxylation, the elastic modulus of printed gels can be tuned over several orders of magnitudes (5-230 Pa) while ensuring almost no change to the shear viscosity (10-17 mPa) of the bioink solution; thus enabling the fabrication of 3D structures made of different mechanical domains under identical printing parameters and low nozzle shear stress. Human mesenchymal stem cells printed using CA as a bioink show significantly higher survival (95%) in comparison to when printed using native agarose (62%), a commonly used thermogelling hydrogel for 3D-bioprinting applications. This work paves the way toward the printing of complex tissue-like structures composed of a range of mechanically discrete microdomains that could potentially reproduce natural mechanical aspects of functional tissues.
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Affiliation(s)
- Aurelien Forget
- Institute for Macromolecular Chemistry University of Freiburg; 79104 Freiburg Germany
- Science and Engineering Faculty; Queensland University of Technology; Brisbane 4001 Australia
- School of Pharmacy and Medical Science University of South Australia; Adelaide 5000 Australia
| | - Andreas Blaeser
- Department of Dental Materials and Biomaterials Research; RWTH Aachen University Hospital; 52074 Aachen Germany
| | - Florian Miessmer
- Institute for Macromolecular Chemistry University of Freiburg; 79104 Freiburg Germany
| | - Marius Köpf
- Department of Dental Materials and Biomaterials Research; RWTH Aachen University Hospital; 52074 Aachen Germany
| | - Daniela F. Duarte Campos
- Department of Dental Materials and Biomaterials Research; RWTH Aachen University Hospital; 52074 Aachen Germany
| | | | - Anton Blencowe
- School of Pharmacy and Medical Science University of South Australia; Adelaide 5000 Australia
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research; RWTH Aachen University Hospital; 52074 Aachen Germany
| | - V. Prasad Shastri
- Institute for Macromolecular Chemistry University of Freiburg; 79104 Freiburg Germany
- BIOSS - Centre for Biological Signalling Studies; University of Freiburg; 79104 Freiburg Germany
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12
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Gu Q, Tomaskovic‐Crook E, Wallace GG, Crook JM. 3D Bioprinting Human Induced Pluripotent Stem Cell Constructs for In Situ Cell Proliferation and Successive Multilineage Differentiation. Adv Healthc Mater 2017; 6. [PMID: 28544655 DOI: 10.1002/adhm.201700175] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/25/2017] [Indexed: 01/01/2023]
Abstract
The ability to create 3D tissues from induced pluripotent stem cells (iPSCs) is poised to revolutionize stem cell research and regenerative medicine, including individualized, patient-specific stem cell-based treatments. There are, however, few examples of tissue engineering using iPSCs. Their culture and differentiation is predominantly planar for monolayer cell support or induction of self-organizing embryoids (EBs) and organoids. Bioprinting iPSCs with advanced biomaterials promises to augment efforts to develop 3D tissues, ideally comprising direct-write printing of cells for encapsulation, proliferation, and differentiation. Here, such a method, employing a clinically amenable polysaccharide-based bioink, is described as the first example of bioprinting human iPSCs for in situ expansion and sequential differentiation. Specifically, we have extrusion printed the bioink including iPSCs, alginate (Al; 5% weight/volume [w/v]), carboxymethyl-chitosan (5% w/v), and agarose (Ag; 1.5% w/v), crosslinked the bioink in calcium chloride for a stable and porous construct, proliferated the iPSCs within the construct and differentiated the same iPSCs into either EBs comprising cells of three germ lineages-endoderm, ectoderm, and mesoderm, or more homogeneous neural tissues containing functional migrating neurons and neuroglia. This defined, scalable, and versatile platform is envisaged being useful in iPSC research and translation for pharmaceuticals development and regenerative medicine.
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Affiliation(s)
- Qi Gu
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility Innovation Campus University of Wollongong Squires Way Fairy Meadow New South Wales 2519 Australia
- State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 P. R. China
| | - Eva Tomaskovic‐Crook
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility Innovation Campus University of Wollongong Squires Way Fairy Meadow New South Wales 2519 Australia
- Illawarra Health and Medical Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility Innovation Campus University of Wollongong Squires Way Fairy Meadow New South Wales 2519 Australia
| | - Jeremy M. Crook
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility Innovation Campus University of Wollongong Squires Way Fairy Meadow New South Wales 2519 Australia
- Illawarra Health and Medical Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
- Department of Surgery St Vincent's Hospital The University of Melbourne Fitzroy Victoria 3065 Australia
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Time-Resolved Study of Nanomorphology and Nanomechanic Change of Early-Stage Mineralized Electrospun Poly(lactic acid) Fiber by Scanning Electron Microscopy, Raman Spectroscopy and Atomic Force Microscopy. NANOMATERIALS 2017; 7:nano7080223. [PMID: 28817096 PMCID: PMC5575705 DOI: 10.3390/nano7080223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/05/2017] [Accepted: 08/10/2017] [Indexed: 01/15/2023]
Abstract
In this study, scanning electron microscopy (SEM), Raman spectroscopy and high-resolution atomic force microscopy (AFM) were used to reveal the early-stage change of nanomorphology and nanomechanical properties of poly(lactic acid) (PLA) fibers in a time-resolved manner during the mineralization process. Electrospun PLA nanofibers were soaked in simulated body fluid (SBF) for different periods of time (0, 1, 3, 5, 7 and 21 days) at 10 °C, much lower than the conventional 37 °C, to simulate the slow biomineralization process. Time-resolved Raman spectroscopy analysis can confirm that apatites were deposited on PLA nanofibers after 21 days of mineralization. However, there is no significant signal change among several Raman spectra before 21 days. SEM images can reveal the mineral deposit on PLA nanofibers during the process of mineralization. In this work, for the first time, time-resolved AFM was used to monitor early-stage nanomorphology and nanomechanical changes of PLA nanofibers. The Surface Roughness and Young’s Modulus of the PLA nanofiber quantitatively increased with the time of mineralization. The electrospun PLA nanofibers with delicate porous structure could mimic the extracellular matrix (ECM) and serve as a model to study the early-stage mineralization. Tested by the mode of PLA nanofibers, we demonstrated that AFM technique could be developed as a potential diagnostic tool to monitor the early onset of pathologic mineralization of soft tissues.
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14
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Karimpoor M, IIlangakoon E, Reid AG, Claudiani S, Edirisinghe M, Khorashad JS. Development of artificial bone marrow fibre scaffolds to study resistance to anti-leukaemia agents. Br J Haematol 2017; 182:924-927. [DOI: 10.1111/bjh.14883] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Mahroo Karimpoor
- Department of Mechanical Engineering; University College London; London UK
| | - Eranka IIlangakoon
- Department of Mechanical Engineering; University College London; London UK
| | - Alistair G. Reid
- Molecular Pathology Unit; Liverpool Clinical Laboratories; Liverpool UK
| | - Simone Claudiani
- Centre for Haematology; Department of Medicine; Imperial College; Hammersmith Hospital; London UK
| | - Mohan Edirisinghe
- Department of Mechanical Engineering; University College London; London UK
| | - Jamshid S. Khorashad
- Centre for Haematology; Department of Medicine; Imperial College; Hammersmith Hospital; London UK
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15
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Use of Polycaprolactone Electrospun Nanofibers as a Coating for Poly(methyl methacrylate) Bone Cement. NANOMATERIALS 2017; 7:nano7070175. [PMID: 28698500 PMCID: PMC5535241 DOI: 10.3390/nano7070175] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/23/2017] [Accepted: 06/27/2017] [Indexed: 11/16/2022]
Abstract
Poly(methyl methacrylate) (PMMA) bone cement has limited biocompatibility. Polycaprolactone (PCL) electrospun nanofiber (ENF) has many applications in the biomedical field due to its excellent biocompatibility and degradability. The effect of coating PCL ENF on the surface topography, biocompatibility, and mechanical strength of PMMA bone cement is not currently known. This study is based on the hypothesis that the PCL ENF coating on PMMA will increase PMMA roughness leading to increased biocompatibility without influencing its mechanical properties. This study prepared PMMA samples without and with the PCL ENF coating, which were named the control and ENF coated samples. This study determined the effects on the surface topography and cytocompatibility (osteoblast cell adhesion, proliferation, mineralization, and protein adsorption) properties of each group of PMMA samples. This study also determined the bending properties (strength, modulus, and maximum deflection at fracture) of each group of PMMA samples from an American Society of Testing Metal (ASTM) standard three-point bend test. This study found that the ENF coating on PMMA significantly improved the surface roughness and cytocompatibility properties of PMMA (p < 0.05). This study also found that the bending properties of ENF-coated PMMA samples were not significantly different when compared to those values of the control PMMA samples (p > 0.05). Therefore, the PCL ENF coating technique should be further investigated for its potential in clinical applications.
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Ye Q, Spencer P, Yuca E, Tamerler C. Engineered Peptide Repairs Defective Adhesive-Dentin Interface. MACROMOLECULAR MATERIALS AND ENGINEERING 2017; 302:1600487. [PMID: 29056869 PMCID: PMC5650097 DOI: 10.1002/mame.201600487] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Failure of dental composite restorations is primarily due to recurrent decay at the tooth-composite interface. At this interface, the adhesive and its bond with dentin is the barrier between the restored tooth and the oral environment. In vivo degradation of the bond formed at the adhesive/dentin (a/d) interface follows a cascade of events leading to weakening of the composite restoration. Here, a peptide-based approach is developed to mineralize deficient dentin matrices at the a/d interface. Peptides that have an inherent capacity to self-assemble on dentin and to induce calcium-phosphate remineralization are anchored at the interface. Distribution of adhesive, collagen, and mineral is analyzed using micro-Raman spectroscopy and fluorescence microscopy. The analysis demonstrates remineralization of the deficient dentin matrices achieved throughout the interface with homogeneous distribution of mineral. The peptide-based remineralization demonstrated here can be an enabling technology to design integrated biomaterial-tissue interfaces.
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Affiliation(s)
- Qiang Ye
- Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA
| | - Paulette Spencer
- Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA. Department of Mechanical Engineering, University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA
| | - Esra Yuca
- Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA
| | - Candan Tamerler
- Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA. Department of Mechanical Engineering, University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA
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