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Lee CH, Hunt D, Roth JG, Chiu CC, Suhar RA, LeSavage BL, Seymour AJ, Lindsay C, Krajina B, Chen YT, Chang KH, Hsieh IC, Chu PH, Wen MS, Heilshorn SC. Tuning pro-survival effects of human induced pluripotent stem cell-derived exosomes using elastin-like polypeptides. Biomaterials 2022; 291:121864. [DOI: 10.1016/j.biomaterials.2022.121864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 09/03/2022] [Accepted: 10/17/2022] [Indexed: 11/28/2022]
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2
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Lima LF, Sousa MGDC, Rodrigues GR, de Oliveira KBS, Pereira AM, da Costa A, Machado R, Franco OL, Dias SC. Elastin-like Polypeptides in Development of Nanomaterials for Application in the Medical Field. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.874790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Elastin-like polypeptides (ELPs) are biopolymers formed by amino acid sequences derived from tropoelastin. These biomolecules can be soluble below critical temperatures, forming aggregates at higher temperatures, which makes them an interesting source for the design of different nanobiomaterials. These nanobiomaterials can be obtained from heterologous expression in several organisms such as bacteria, fungi, and plants. Thanks to the many advantages of ELPs, they have been used in the biomedical field to develop nanoparticles, nanofibers, and nanocomposites. These nanostructures can be used in multiple applications such as drug delivery systems, treatments of type 2 diabetes, cardiovascular diseases, tissue repair, and cancer therapy. Thus, this review aims to shed some light on the main advances in elastin-like-based nanomaterials, their possible expression forms, and importance to the medical field.
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Nelson DW, Gilbert RJ. Extracellular Matrix-Mimetic Hydrogels for Treating Neural Tissue Injury: A Focus on Fibrin, Hyaluronic Acid, and Elastin-Like Polypeptide Hydrogels. Adv Healthc Mater 2021; 10:e2101329. [PMID: 34494398 PMCID: PMC8599642 DOI: 10.1002/adhm.202101329] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/23/2021] [Indexed: 12/19/2022]
Abstract
Neurological and functional recovery is limited following central nervous system injury and severe injury to the peripheral nervous system. Extracellular matrix (ECM)-mimetic hydrogels are of particular interest as regenerative scaffolds for the injured nervous system as they provide 3D bioactive interfaces that modulate cellular response to the injury environment and provide naturally degradable scaffolding for effective tissue remodeling. In this review, three unique ECM-mimetic hydrogels used in models of neural injury are reviewed: fibrin hydrogels, which rely on a naturally occurring enzymatic gelation, hyaluronic acid hydrogels, which require chemical modification prior to chemical crosslinking, and elastin-like polypeptide (ELP) hydrogels, which exhibit a temperature-sensitive gelation. The hydrogels are reviewed by summarizing their unique biological properties, their use as drug depots, and their combination with other biomaterials, such as electrospun fibers and nanoparticles. This review is the first to focus on these three ECM-mimetic hydrogels for their use in neural tissue engineering. Additionally, this is the first review to summarize the use of ELP hydrogels for nervous system applications. ECM-mimetic hydrogels have shown great promise in preclinical models of neural injury and future advancements in their design and use can likely lead to viable treatments for patients with neural injury.
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Affiliation(s)
- Derek W Nelson
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St, Troy, NY, 12180, USA
| | - Ryan J Gilbert
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St, Troy, NY, 12180, USA
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Rodriguez-Cabello JC, Gonzalez De Torre I, González-Pérez M, González-Pérez F, Montequi I. Fibrous Scaffolds From Elastin-Based Materials. Front Bioeng Biotechnol 2021; 9:652384. [PMID: 34336798 PMCID: PMC8323661 DOI: 10.3389/fbioe.2021.652384] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 06/25/2021] [Indexed: 11/28/2022] Open
Abstract
Current cutting-edge strategies in biomaterials science are focused on mimicking the design of natural systems which, over millions of years, have evolved to exhibit extraordinary properties. Based on this premise, one of the most challenging tasks is to imitate the natural extracellular matrix (ECM), due to its ubiquitous character and its crucial role in tissue integrity. The anisotropic fibrillar architecture of the ECM has been reported to have a significant influence on cell behaviour and function. A new paradigm that pivots around the idea of incorporating biomechanical and biomolecular cues into the design of biomaterials and systems for biomedical applications has emerged in recent years. Indeed, current trends in materials science address the development of innovative biomaterials that include the dynamics, biochemistry and structural features of the native ECM. In this context, one of the most actively studied biomaterials for tissue engineering and regenerative medicine applications are nanofiber-based scaffolds. Herein we provide a broad overview of the current status, challenges, manufacturing methods and applications of nanofibers based on elastin-based materials. Starting from an introduction to elastin as an inspiring fibrous protein, as well as to the natural and synthetic elastin-based biomaterials employed to meet the challenge of developing ECM-mimicking nanofibrous-based scaffolds, this review will follow with a description of the leading strategies currently employed in nanofibrous systems production, which in the case of elastin-based materials are mainly focused on supramolecular self-assembly mechanisms and the use of advanced manufacturing technologies. Thus, we will explore the tendency of elastin-based materials to form intrinsic fibers, and the self-assembly mechanisms involved. We will describe the function and self-assembly mechanisms of silk-like motifs, antimicrobial peptides and leucine zippers when incorporated into the backbone of the elastin-based biomaterial. Advanced polymer-processing technologies, such as electrospinning and additive manufacturing, as well as their specific features, will be presented and reviewed for the specific case of elastin-based nanofiber manufacture. Finally, we will present our perspectives and outlook on the current challenges facing the development of nanofibrous ECM-mimicking scaffolds based on elastin and elastin-like biomaterials, as well as future trends in nanofabrication and applications.
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Affiliation(s)
- Jose Carlos Rodriguez-Cabello
- BIOFORGE, University of Valladolid, Valladolid, Spain
- Center for Biomedical Research in the Network in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Israel Gonzalez De Torre
- BIOFORGE, University of Valladolid, Valladolid, Spain
- Center for Biomedical Research in the Network in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Miguel González-Pérez
- BIOFORGE, University of Valladolid, Valladolid, Spain
- Center for Biomedical Research in the Network in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Fernando González-Pérez
- BIOFORGE, University of Valladolid, Valladolid, Spain
- Center for Biomedical Research in the Network in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Irene Montequi
- BIOFORGE, University of Valladolid, Valladolid, Spain
- Center for Biomedical Research in the Network in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
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Sarangthem V, Singh TD, Dinda AK. Emerging Role of Elastin-Like Polypeptides in Regenerative Medicine. Adv Wound Care (New Rochelle) 2021; 10:257-269. [PMID: 32602815 DOI: 10.1089/wound.2019.1085] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Significance: Wound dressing based on naturally derived polymer provides a useful platform for treatment of skin injuries. Owing to the high mechanical strength and tunable structural and physicochemical properties of human elastin-like polypeptides (ELPs), they may be used as excellent materials for fabricating biocompatible scaffolds and other products for wound management. Recent Advances: Designing recombinant ELPs mimicking natural elastin to fabricate synthetic polymers suitable for human health care has generated significant interest. ELP-based cell-adhesive biopolymers have been used as an alternative for successful sutureless wound closure due to the physicochemical characteristics of the extracellular matrix. Critical Issues: Different systems of ELPs are being developed in the form of scaffolds, films, hydrogels, photo-linkable sheets, and composites linked with various types of growth factors for wound healing application. However, optimizing the quality and safety attributes for specific application needs designing of recombinant ELPs with structural and functional modifications as needed for the intervention. Future Direction: Chronic wounds are difficult to treat as the wound repair process is interrupted by conditions such as excessive inflammation, impaired extracellular matrix formation, and persistent infections. Conventional therapies such as skin substitutes or autologous skin grafts, in many cases, are unable to reestablish tissue homeostasis and proper healing. The development of innovative materials could induce a better regenerative healing response. In this study, we are reviewing different types of elastin-based materials for wound care application and their future prospects in regenerative medicine.
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Affiliation(s)
- Vijaya Sarangthem
- Department of Pathology and All India Institute of Medical Sciences, New Delhi, India
| | - Thoudam Debraj Singh
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Amit Kumar Dinda
- Department of Pathology and All India Institute of Medical Sciences, New Delhi, India
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Taskin MB, Ahmad T, Wistlich L, Meinel L, Schmitz M, Rossi A, Groll J. Bioactive Electrospun Fibers: Fabrication Strategies and a Critical Review of Surface-Sensitive Characterization and Quantification. Chem Rev 2021; 121:11194-11237. [DOI: 10.1021/acs.chemrev.0c00816] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mehmet Berat Taskin
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Taufiq Ahmad
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Laura Wistlich
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Lorenz Meinel
- Institute of Pharmacy and Food Chemistry and Helmholtz Institute for RNA Based Infection Research, 97074 Würzburg, Germany
| | - Michael Schmitz
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Angela Rossi
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
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Meco E, Lampe KJ. Impact of Elastin-like Protein Temperature Transition on PEG-ELP Hybrid Hydrogel Properties. Biomacromolecules 2019; 20:1914-1925. [DOI: 10.1021/acs.biomac.9b00113] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Edi Meco
- Department of Chemical Engineering, Chemical Eng., Office 117, University of Virginia, 102 Engineer’s Way, Charlottesville, Virginia 22904, United States
| | - Kyle J. Lampe
- Department of Chemical Engineering, Chemical Eng., Office 117, University of Virginia, 102 Engineer’s Way, Charlottesville, Virginia 22904, United States
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Fernández-Colino A, Wolf F, Rütten S, Rodríguez-Cabello JC, Jockenhoevel S, Mela P. Combining Catalyst-Free Click Chemistry with Coaxial Electrospinning to Obtain Long-Term, Water-Stable, Bioactive Elastin-Like Fibers for Tissue Engineering Applications. Macromol Biosci 2018; 18:e1800147. [PMID: 30260568 DOI: 10.1002/mabi.201800147] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/09/2018] [Indexed: 11/09/2022]
Abstract
Elastic fibers are a fundamental requirement for tissue-engineered equivalents of physiologically elastic native tissues. Here, a simple one-step electrospinning approach is developed, combining i) catalyst-free click chemistry, ii) coaxial electrospinning, and iii) recombinant elastin-like polymers as a relevant class of biomaterials. Water-stable elastin-like fibers are obtained without the use of cross-linking agents, catalysts, or harmful organic solvents. The fibers can be directly exposed to an aqueous environment at physiological temperature and their morphology maintained for at least 3 months. The bioactivity of the fibers is demonstrated with human vascular cells and the potential of the process for vascular tissue engineering is shown by fabricating small-diameter tubular fibrous scaffolds. Moreover, highly porous fluffy 3D constructs are obtained without the use of specially designed collectors or sacrificial materials, further supporting their applicability in the biomedical field. Ultimately, the strategy that is developed here may be applied to other click systems, contributing to expanding their potential in medical technology.
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Affiliation(s)
- Alicia Fernández-Colino
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Forckenbeckstraße 55, 52074, Aachen, Germany
| | - Frederic Wolf
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Forckenbeckstraße 55, 52074, Aachen, Germany
| | - Stephan Rütten
- Electron Microscopy Facility, Uniklinik RWTH Aachen, Pauwelsstrasse, 30, D-52074, Aachen, Germany
| | | | - Stefan Jockenhoevel
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Forckenbeckstraße 55, 52074, Aachen, Germany.,Aachen-Maastricht-Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167 RD, Geleen, The Netherlands
| | - Petra Mela
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Forckenbeckstraße 55, 52074, Aachen, Germany
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9
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Wang H, Paul A, Nguyen D, Enejder A, Heilshorn SC. Tunable Control of Hydrogel Microstructure by Kinetic Competition between Self-Assembly and Crosslinking of Elastin-like Proteins. ACS APPLIED MATERIALS & INTERFACES 2018; 10:21808-21815. [PMID: 29869869 DOI: 10.1021/acsami.8b02461] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The fabrication of three dimensional "bead-string" microstructured hydrogels is rationally achieved by controlling the relative timing of chemical crosslinking and physical self-assembly processes of an engineered protein. To demonstrate this strategy, an elastin-like protein (ELP) amino acid sequence was selected to enable site-specific chemical crosslinking and thermoresponsive physical self-assembly. This method allows the tuning of material microstructures without altering the ELP amino acid sequence but simply through controlling the chemical crosslinking extent before the thermally induced, physical coacervation of ELP. A loosely crosslinked network enables ELP to have greater chain mobility, resulting in phase segregation into larger beads. By contrast, a network with higher crosslinking density has restricted ELP chain mobility, resulting in more localized self-assembly into smaller beads. As a proof of concept application for this facile assembly process, we demonstrate one-pot, simultaneous, dual encapsulation of hydrophilic and hydrophobic model drugs within the microstructured hydrogel and differential release rates of the two drugs from the material.
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Affiliation(s)
- Huiyuan Wang
- Department of Materials Science & Engineering , Stanford University , Stanford , California 94305 , United States
| | - Alexandra Paul
- Department of Biology and Biological Engineering , Chalmers University of Technology , Gothenburg SE-412 96 , Sweden
| | - Duong Nguyen
- Department of Biology and Biological Engineering , Chalmers University of Technology , Gothenburg SE-412 96 , Sweden
| | - Annika Enejder
- Department of Materials Science & Engineering , Stanford University , Stanford , California 94305 , United States
| | - Sarah C Heilshorn
- Department of Materials Science & Engineering , Stanford University , Stanford , California 94305 , United States
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10
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González de Torre I, Ibáñez-Fonseca A, Quintanilla L, Alonso M, Rodríguez-Cabello JC. Random and oriented electrospun fibers based on a multicomponent, in situ clickable elastin-like recombinamer system for dermal tissue engineering. Acta Biomater 2018; 72:137-149. [PMID: 29574183 DOI: 10.1016/j.actbio.2018.03.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/20/2018] [Accepted: 03/14/2018] [Indexed: 10/17/2022]
Abstract
Herein we present a system to obtain fibers from clickable elastin-like recombinamers (ELRs) that crosslink in situ during the electrospinning process itself, with no need for any further treatment to stabilize them. These ELR-click fibers are completely stable under in vitro conditions. A wrinkled fiber morphology is obtained. In addition to a random fiber orientation, oriented fibers with a high degree of alignment and coherence can also be obtained by using a rotational electrode. The production of multicomponent fibers means that different functionalities, such as cell-adhesion domains (RGD peptides), can be incorporated into them. In a subsequent study, two main cell lines present in the dermis and epidermis, namely keratinocytes and fibroblasts, were cultured on top of the ELR-click fibers. Adhesion, proliferation, fluorescence, immunostaining and histology studies showed the cytocompatibility of these scaffolds, thus suggesting their possible use for wound dressings in skin tissue engineering applications. STATEMENT OF SIGNIFICANCE For the first time stable electrospun bioactive fibers are obtained by the in situ mixing of two "clickable" ELR components previously described by Gonzalez et al (Acta Biomaterialia 2014). This work describes an efficient system to prepare fibrous scaffolds based on peptidic polymers by electrospinning without the need of crosslinking agents that could be harmful for cells or living tissues. These bioactive fibers support cell growth due to the inclusion of RGD motifs (Staubli et al. Biomaterials 2017). Finally, the in vitro biocompatibility of the two main cell types found in the outer layers of skin, fibroblasts and keratinocytes, indicates that this system is of great interest to prepare elastic artificial skin substitutes for wound healing applications.
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Rodríguez-Cabello JC, González de Torre I, Ibañez-Fonseca A, Alonso M. Bioactive scaffolds based on elastin-like materials for wound healing. Adv Drug Deliv Rev 2018; 129:118-133. [PMID: 29551651 DOI: 10.1016/j.addr.2018.03.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 02/06/2018] [Accepted: 03/13/2018] [Indexed: 01/08/2023]
Abstract
Wound healing is a complex process that, in healthy tissues, starts immediately after the injury. Even though it is a natural well-orchestrated process, large trauma wounds, or injuries caused by acids or other chemicals, usually produce a non-elastic deformed tissue that not only have biological reduced properties but a clear aesthetic effect. One of the main drawbacks of the scaffolds used for wound dressing is the lack of elasticity, driving to non-elastic and contracted tissues. In the last decades, elastin based materials have gained in importance as biomaterials for tissue engineering applications due to their good cyto- and bio-compatibility, their ease handling and design, production and modification. Synthetic elastin or elastin like-peptides (ELPs) are the two main families of biomaterials that try to mimic the outstanding properties of natural elastin, elasticity amongst others; although there are no in vivo studies that clearly support that these two families of elastin based materials improve the elasticity of the artificial scaffolds and of the regenerated skin. Within the next pages a review of the different forms (coacervates, fibres, hydrogels and biofunctionalized surfaces) in which these two families of biomaterials can be processed to be applied in the wound healing field have been done. Here, we explore the mechanical and biological properties of these scaffolds as well as the different in vivo approaches in which these scaffolds have been used.
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Affiliation(s)
- J Carlos Rodríguez-Cabello
- BIOFORGE, CIBER-BBN, Edificio Lucia, Universidad de Valladolid, Paseo Belén 19, 47011 Valladolid, Spain; G.I.R. BIOFORGE, Universidad de Valladolid, Paseo de Belén 19, 47011 Valladolid, Spain.
| | - I González de Torre
- BIOFORGE, CIBER-BBN, Edificio Lucia, Universidad de Valladolid, Paseo Belén 19, 47011 Valladolid, Spain; G.I.R. BIOFORGE, Universidad de Valladolid, Paseo Belén 9 A, 47011 Valladolid, Spain.
| | - A Ibañez-Fonseca
- BIOFORGE, CIBER-BBN, Edificio Lucia, Universidad de Valladolid, Paseo Belén 19, 47011 Valladolid, Spain; G.I.R. BIOFORGE, Universidad de Valladolid, Paseo Belén 9 A, 47011 Valladolid, Spain.
| | - M Alonso
- BIOFORGE, CIBER-BBN, Edificio Lucia, Universidad de Valladolid, Paseo Belén 19, 47011 Valladolid, Spain; G.I.R. BIOFORGE, Universidad de Valladolid, Paseo de Belén 19, 47011 Valladolid, Spain.
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12
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Pesqueira T, Costa-Almeida R, Mithieux SM, Babo PS, Franco AR, Mendes BB, Domingues RMA, Freitas P, Reis RL, Gomes ME, Weiss AS. Engineering magnetically responsive tropoelastin spongy-like hydrogels for soft tissue regeneration. J Mater Chem B 2018; 6:1066-1075. [DOI: 10.1039/c7tb02035j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Magnetic biomaterials are a key focus in medical research.
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Wang H, Zhu D, Paul A, Cai L, Enejder A, Yang F, Heilshorn SC. Covalently adaptable elastin-like protein - hyaluronic acid (ELP - HA) hybrid hydrogels with secondary thermoresponsive crosslinking for injectable stem cell delivery. ADVANCED FUNCTIONAL MATERIALS 2017; 27:1605609. [PMID: 33041740 PMCID: PMC7546546 DOI: 10.1002/adfm.201605609] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Shear-thinning, self-healing hydrogels are promising vehicles for therapeutic cargo delivery due to their ability to be injected using minimally invasive surgical procedures. We present an injectable hydrogel using a novel combination of dynamic covalent crosslinking with thermoresponsive engineered proteins. Ex situ at room temperature, rapid gelation occurs through dynamic covalent hydrazone bonds by simply mixing two components: hydrazine-modified elastin-like protein (ELP) and aldehyde-modified hyaluronic acid. This hydrogel provides significant mechanical protection to encapsulated human mesenchymal stem cells during syringe needle injection and rapidly recovers after injection to retain the cells homogeneously within a 3D environment. In situ, the ELP undergoes a thermal phase transition, as confirmed by Coherent anti-Stokes Raman scattering microscopy observation of dense ELP thermal aggregates. The formation of the secondary network reinforces the hydrogel and results in a 10-fold slower erosion rate compared to a control hydrogel without secondary thermal crosslinking. This improved structural integrity enables cell culture for three weeks post injection, and encapsulated cells maintain their ability to differentiate into multiple lineages, including chondrogenic, adipogenic, and osteogenic cell types. Together, these data demonstrate the promising potential of ELP-HA hydrogels for injectable stem cell transplantation and tissue regeneration.
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Affiliation(s)
- Huiyuan Wang
- Department of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Danqing Zhu
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Alexandra Paul
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, SE-412 96, Sweden
| | - Lei Cai
- Department of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Annika Enejder
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, SE-412 96, Sweden
| | - Fan Yang
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, 94305, USA
| | - Sarah C Heilshorn
- Department of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA
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14
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da Costa A, Pereira AM, Gomes AC, Rodriguez-Cabello JC, Sencadas V, Casal M, Machado R. Single step fabrication of antimicrobial fibre mats from a bioengineered protein-based polymer. Biomed Mater 2017; 12:045011. [DOI: 10.1088/1748-605x/aa7104] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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The effects of porosity and stiffness of genipin cross-linked egg white simulating aged extracellular matrix on proliferation and aggregation of ovarian cancer cells. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.02.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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16
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Mascharak S, Benitez PL, Proctor AC, Madl CM, Hu KH, Dewi RE, Butte MJ, Heilshorn SC. YAP-dependent mechanotransduction is required for proliferation and migration on native-like substrate topography. Biomaterials 2017; 115:155-166. [PMID: 27889666 PMCID: PMC5572766 DOI: 10.1016/j.biomaterials.2016.11.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/13/2016] [Accepted: 11/15/2016] [Indexed: 01/02/2023]
Abstract
Native vascular extracellular matrices (vECM) consist of elastic fibers that impart varied topographical properties, yet most in vitro models designed to study the effects of topography on cell behavior are not representative of native architecture. Here, we engineer an electrospun elastin-like protein (ELP) system with independently tunable, vECM-mimetic topography and demonstrate that increasing topographical variation causes loss of endothelial cell-cell junction organization. This loss of VE-cadherin signaling and increased cytoskeletal contractility on more topographically varied ELP substrates in turn promote YAP activation and nuclear translocation, resulting in significantly increased endothelial cell migration and proliferation. Our findings identify YAP as a required signaling factor through which fibrous substrate topography influences cell behavior and highlights topography as a key design parameter for engineered biomaterials.
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Affiliation(s)
- Shamik Mascharak
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Patrick L Benitez
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Amy C Proctor
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Christopher M Madl
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Kenneth H Hu
- Biophysics Graduate Group, Stanford University, Stanford, CA, 94305, USA
| | - Ruby E Dewi
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Manish J Butte
- Department of Pediatrics, Stanford University, Stanford, CA, 94305, USA
| | - Sarah C Heilshorn
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
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Li L, Mahara A, Tong Z, Levenson EA, McGann CL, Jia X, Yamaoka T, Kiick KL. Recombinant Resilin-Based Bioelastomers for Regenerative Medicine Applications. Adv Healthc Mater 2016; 5:266-75. [PMID: 26632334 PMCID: PMC4754112 DOI: 10.1002/adhm.201500411] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 09/15/2015] [Indexed: 12/22/2022]
Abstract
The outstanding elasticity, excellent resilience at high-frequency, and hydrophilic capacity of natural resilin have motivated investigations of recombinant resilin-based biomaterials as a new class of bio-elastomers in the engineering of mechanically active tissues. Accordingly, here the comprehensive characterization of modular resilin-like polypeptide (RLP) hydrogels is presented and their suitability as a novel biomaterial for in vivo applications is introduced. Oscillatory rheology confirmed that a full suite of the RLPs can be rapidly cross-linked upon addition of the tris(hydroxymethyl phosphine) cross-linker, achieving similar in situ shear storage moduli (20 k ± 3.5 Pa) across various material compositions. Uniaxial stress relaxation tensile testing of hydrated RLP hydrogels under cyclic loading and unloading showed negligible stress reduction and hysteresis, superior reversible extensibility, and high resilience with Young's moduli of 30 ± 7.4 kPa. RLP hydrogels containing MMP-sensitive domains are susceptible to enzymatic degradation by matrix metalloproteinase-1 (MMP-1). Cell culture studies revealed that RLP-based hydrogels supported the attachment and spreading (2D) of human mesenchymal stem cells and did not activate cultured macrophages. Subcutaneous transplantation of RLP hydrogels in a rat model, which to our knowledge is the first such reported in vivo analysis of RLP-based hydrogels, illustrated that these materials do not elicit a significant inflammatory response, suggesting their potential as materials for tissue engineering applications with targets of mechanically demanding tissues such as vocal fold and cardiovascular tissues.
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Affiliation(s)
- Linqing Li
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Atsushi Mahara
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Fujishiro-dai Suita, Osaka, 565-8565, Japan
| | - Zhixiang Tong
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Eric A Levenson
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Christopher L McGann
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Xinqiao Jia
- Department of Materials Science and Engineering, Department of Biomedical Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Tetsuji Yamaoka
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Fujishiro-dai Suita, Osaka, 565-8565, Japan
| | - Kristi L Kiick
- Department of Materials Science and Engineering, Department of Biomedical Engineering, University of Delaware, Newark, DE, 19716, USA
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18
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Benitez PL, Mascharak S, Proctor AC, Heilshorn SC. Use of protein-engineered fabrics to identify design rules for integrin ligand clustering in biomaterials. Integr Biol (Camb) 2015; 8:50-61. [PMID: 26692238 DOI: 10.1039/c5ib00258c] [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]
Abstract
While ligand clustering is known to enhance integrin activation, this insight has been difficult to apply to the design of implantable biomaterials because the local and global ligand densities that enable clustering-enhanced integrin signaling were unpredictable. Here, two general design principles for biomaterial ligand clustering are elucidated. First, clustering ligands enhances integrin-dependent signals when the global ligand density, i.e., the ligand density across the cellular length scale, is near the ligand's effective dissociation constant (KD,eff). Second, clustering ligands enhances integrin activation when the local ligand density, i.e., the ligand density across the length scale of individual focal adhesions, is less than an overcrowding threshold. To identify these principles, we fabricated a series of elastin-like, electrospun fabrics with independent control over the local (0 to 122 000 ligands μm(-2)) and global (0 to 71 000 ligand μm(-2)) densities of an arginine-glycine-aspartate (RGD) ligand. Antibody blocking studies confirmed that human umbilical vein endothelial cell adhesion to these protein-engineered biomaterials was primarily due to αVβ3 integrin binding. Clustering ligands enhanced cell proliferation, focal adhesion number, and focal adhesion kinase expression near the ligand's KD,eff of 12 000 RGD μm(-2). Near this global ligand density, cells on ligand-clustered fabrics behaved similarly to cells grown on fabrics with significantly larger global ligand densities but without clustering. However, this enhanced ligand-clustering effect was not observed above a threshold cut-off concentration. At a local ligand density of 122 000 RGD μm(-2), cell division, focal adhesion number, and focal adhesion kinase expression were significantly reduced relative to fabrics with identical global ligand density and lesser local ligand densities. Thus, when clustering results in overcrowding of ligands, integrin receptors are no longer able to effectively engage with their target ligands. Together, these two insights into the cellular responses to ligand clustering at the cell-matrix interface may serve as design principles when developing future generations of implantable biomaterials.
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Affiliation(s)
- Patrick L Benitez
- Department of Bioengineering, Stanford University, 476 Lomita Mall, Stanford, CA 94305,
| | - Shamik Mascharak
- Department of Bioengineering, Stanford University, 476 Lomita Mall, Stanford, CA 94305,
| | - Amy C Proctor
- Department of Chemical Engineering, Stanford University, 476 Lomita Mall, Stanford, CA 94305,
| | - Sarah C Heilshorn
- Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, CA 94305
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19
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Cho S, Dong S, Parent KN, Chen M. Immune-tolerant elastin-like polypeptides (iTEPs) and their application as CTL vaccine carriers. J Drug Target 2015; 24:328-39. [PMID: 26307138 PMCID: PMC4813525 DOI: 10.3109/1061186x.2015.1077847] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 07/27/2015] [Indexed: 01/19/2023]
Abstract
BACKGROUND Cytotoxic T lymphocyte (CTL) vaccine carriers are known to enhance the efficacy of vaccines, but a search for more effective carriers is warranted. Elastin-like polypeptides (ELPs) have been examined for many medical applications but not as CTL vaccine carriers. PURPOSE We aimed to create immune tolerant ELPs using a new polypeptide engineering practice and create CTL vaccine carriers using the ELPs. RESULTS Four sets of novel ELPs, termed immune-tolerant elastin-like polypeptide (iTEP) were generated according to the principles dictating humoral immunogenicity of polypeptides and phase transition property of ELPs. The iTEPs were non-immunogenic in mice. Their phase transition feature was confirmed through a turbidity assay. An iTEP nanoparticle (NP) was assembled from an amphiphilic iTEP copolymer plus a CTL peptide vaccine, SIINFEKL. The NP facilitated the presentation of the vaccine by dendritic cells (DCs) and enhanced vaccine-induced CTL responses. DISCUSSION A new ELP design and development practice was established. The non-canonical motif and the immune tolerant nature of the iTEPs broaden our insights about ELPs. ELPs, for the first time, were successfully used as carriers for CTL vaccines. CONCLUSION It is feasible to concurrently engineer both immune-tolerant and functional peptide materials. ELPs are a promising type of CTL vaccine carriers.
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Affiliation(s)
- S. Cho
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, 30 E 2000 S, Salt Lake City, Utah 84112
| | - S. Dong
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, 30 E 2000 S, Salt Lake City, Utah 84112
| | - K. N. Parent
- Dept. of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, MI 48824
| | - M. Chen
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, 30 E 2000 S, Salt Lake City, Utah 84112
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20
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Abstract
Elastin is the dominant mammalian elastic protein found in soft tissue. Elastin-based biomaterials have the potential to repair elastic tissues by improving local elasticity and providing appropriate cellular interactions and signaling. Studies that combine these biomaterials with mesenchymal stem cells have demonstrated their capacity to also regenerate non-elastic tissue. Mesenchymal stem cell differentiation can be controlled by their immediate environment, and their sensitivity to elasticity makes them an ideal candidate for combining with elastin-based biomaterials. With the growing accessibility of the elastin precursor, tropoelastin, and elastin-derived materials, the amount of research interest in combining these two fields has increased and, subsequently, is leading to the realization of a potentially new strategy for regenerative medicine.
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Affiliation(s)
- Jazmin Ozsvar
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia ; Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
| | - Suzanne M Mithieux
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia ; Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
| | - Richard Wang
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia ; Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
| | - Anthony S Weiss
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia ; Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
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21
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Le DHT, Kawakami R, Teraoka Y, Okubo T, Sugawara-Narutaki A. Crosslinking-assisted Stabilization of Beaded Nanofibers from Elastin-like Double Hydrophobic Polypeptides. CHEM LETT 2015. [DOI: 10.1246/cl.141189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Duc H. T. Le
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo
| | - Reiko Kawakami
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo
| | - Yusuke Teraoka
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo
| | - Tatsuya Okubo
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo
| | - Ayae Sugawara-Narutaki
- Department of Crystalline Materials Science, Graduate School of Engineering, Nagoya University
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22
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da Costa A, Machado R, Ribeiro A, Collins T, Thiagarajan V, Neves-Petersen MT, Rodríguez-Cabello JC, Gomes AC, Casal M. Development of Elastin-Like Recombinamer Films with Antimicrobial Activity. Biomacromolecules 2015; 16:625-35. [DOI: 10.1021/bm5016706] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- André da Costa
- CBMA
(Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Raul Machado
- CBMA
(Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Artur Ribeiro
- CBMA
(Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Tony Collins
- CBMA
(Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Viruthachalam Thiagarajan
- School
of Chemistry, Bharathidasan University, Tiruchirappalli − 620 024, India
- BioPhotonics
Group, Nanomedicine Department, International Iberian Nanotechnology Laboratory (INL), P-4715-310 Braga, Portugal
| | - Maria Teresa Neves-Petersen
- BioPhotonics
Group, Nanomedicine Department, International Iberian Nanotechnology Laboratory (INL), P-4715-310 Braga, Portugal
- Faculty
of Medicine, Aalborg University, DK-9220 Aalborg, Denmark
| | - José Carlos Rodríguez-Cabello
- Bioforge
(Group for Advanced Materials and Nanobiotechnology), Centro I+D, Universidad de Valladolid, Valladolid, Spain
- Networking
Research Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-47011 Valladolid, Spain
| | - Andreia C. Gomes
- CBMA
(Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Margarida Casal
- CBMA
(Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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23
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Lau HK, Kiick KL. Opportunities for multicomponent hybrid hydrogels in biomedical applications. Biomacromolecules 2015; 16:28-42. [PMID: 25426888 PMCID: PMC4294583 DOI: 10.1021/bm501361c] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 11/14/2014] [Indexed: 02/08/2023]
Abstract
Hydrogels provide mechanical support and a hydrated environment that offer good cytocompatibility and controlled release of molecules, and myriad hydrogels thus have been studied for biomedical applications. In the past few decades, research in these areas has shifted increasingly to multicomponent hydrogels that better capture the multifunctional nature of native biological environments and that offer opportunities to selectively tailor materials properties. This review summarizes recent approaches aimed at producing multicomponent hydrogels, with descriptions of contemporary chemical and physical approaches for forming networks, and of the use of both synthetic and biologically derived molecules to impart desired properties. Specific multicomponent materials with enhanced mechanical properties are presented, as well as materials in which multiple biological functions are imparted for applications in tissue engineering, cancer treatment, and gene therapies. The progress in the field suggests significant promise for these approaches in the development of biomedically relevant materials.
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Affiliation(s)
- Hang Kuen Lau
- Department of Materials Science and Engineering and ‡Biomedical Engineering, University of Delaware , Newark Delaware 19716, United States
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24
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Desai MS, Lee SW. Protein-based functional nanomaterial design for bioengineering applications. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 7:69-97. [DOI: 10.1002/wnan.1303] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 08/12/2014] [Accepted: 09/02/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Malav S. Desai
- Department of Bioengineering; University of California, Berkeley; Berkeley CA USA
- Physical Biosciences Division; Lawrence Berkeley National Laboratory; Berkeley CA USA
| | - Seung-Wuk Lee
- Department of Bioengineering; University of California, Berkeley; Berkeley CA USA
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25
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Wang H, Cai L, Paul A, Enejder A, Heilshorn SC. Hybrid elastin-like polypeptide-polyethylene glycol (ELP-PEG) hydrogels with improved transparency and independent control of matrix mechanics and cell ligand density. Biomacromolecules 2014; 15:3421-8. [PMID: 25111283 PMCID: PMC4157761 DOI: 10.1021/bm500969d] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 08/08/2014] [Indexed: 01/18/2023]
Abstract
Hydrogels have been developed as extracellular matrix (ECM) mimics both for therapeutic applications and basic biological studies. In particular, elastin-like polypeptide (ELP) hydrogels, which can be tuned to mimic several biochemical and physical characteristics of native ECM, have been constructed to encapsulate various types of cells to create in vitro mimics of in vivo tissues. However, ELP hydrogels become opaque at body temperature because of ELP's lower critical solution temperature behavior. This opacity obstructs light-based observation of the morphology and behavior of encapsulated cells. In order to improve the transparency of ELP hydrogels for better imaging, we have designed a hybrid ELP-polyethylene glycol (PEG) hydrogel system that rapidly cross-links with tris(hydroxymethyl) phosphine (THP) in aqueous solution via Mannich-type condensation. As expected, addition of the hydrophilic PEG component significantly improves the light transmittance. Coherent anti-Stokes Raman scattering (CARS) microscopy reveals that the hybrid ELP-PEG hydrogels have smaller hydrophobic ELP aggregates at 37 °C. Importantly, this hydrogel platform enables independent tuning of adhesion ligand density and matrix stiffness, which is desirable for studies of cell-matrix interactions. Human fibroblasts encapsulated in these hydrogels show high viability (>98%) after 7 days of culture. High-resolution confocal microscopy of encapsulated fibroblasts reveals that the cells adopt a more spread morphology in response to higher RGD ligand concentrations and softer gel mechanics.
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Affiliation(s)
- Huiyuan Wang
- Department
of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
| | - Lei Cai
- Department
of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
| | - Alexandra Paul
- Chalmers
University of Technology, Gothenburg SE-412 96, Sweden
| | - Annika Enejder
- Chalmers
University of Technology, Gothenburg SE-412 96, Sweden
| | - Sarah C. Heilshorn
- Department
of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
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26
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Cai L, Heilshorn SC. Designing ECM-mimetic materials using protein engineering. Acta Biomater 2014; 10:1751-60. [PMID: 24365704 DOI: 10.1016/j.actbio.2013.12.028] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 12/13/2013] [Accepted: 12/16/2013] [Indexed: 11/26/2022]
Abstract
The natural extracellular matrix (ECM), with its multitude of evolved cell-instructive and cell-responsive properties, provides inspiration and guidelines for the design of engineered biomaterials. One strategy to create ECM-mimetic materials is the modular design of protein-based engineered ECM (eECM) scaffolds. This modular design strategy involves combining multiple protein domains with different functionalities into a single, modular polymer sequence, resulting in a multifunctional matrix with independent tunability of the individual domain functions. These eECMs often enable decoupled control over multiple material properties for fundamental studies of cell-matrix interactions. In addition, since the eECMs are frequently composed entirely of bioresorbable amino acids, these matrices have immense clinical potential for a variety of regenerative medicine applications. This brief review demonstrates how fundamental knowledge gained from structure-function studies of native proteins can be exploited in the design of novel protein-engineered biomaterials. While the field of protein-engineered biomaterials has existed for over 20years, the community is only now beginning to fully explore the diversity of functional peptide modules that can be incorporated into these materials. We have chosen to highlight recent examples that either (i) demonstrate exemplary use as matrices with cell-instructive and cell-responsive properties or (ii) demonstrate outstanding creativity in terms of novel molecular-level design and macro-level functionality.
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27
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Gagner JE, Kim W, Chaikof EL. Designing protein-based biomaterials for medical applications. Acta Biomater 2014; 10:1542-57. [PMID: 24121196 PMCID: PMC3960372 DOI: 10.1016/j.actbio.2013.10.001] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/29/2013] [Accepted: 10/01/2013] [Indexed: 02/01/2023]
Abstract
Biomaterials produced by nature have been honed through billions of years, evolving exquisitely precise structure-function relationships that scientists strive to emulate. Advances in genetic engineering have facilitated extensive investigations to determine how changes in even a single peptide within a protein sequence can produce biomaterials with unique thermal, mechanical and biological properties. Elastin, a naturally occurring protein polymer, serves as a model protein to determine the relationship between specific structural elements and desirable material characteristics. The modular, repetitive nature of the protein facilitates the formation of well-defined secondary structures with the ability to self-assemble into complex three-dimensional architectures on a variety of length scales. Furthermore, many opportunities exist to incorporate other protein-based motifs and inorganic materials into recombinant protein-based materials, extending the range and usefulness of these materials in potential biomedical applications. Elastin-like polypeptides (ELPs) can be assembled into 3-D architectures with precise control over payload encapsulation, mechanical and thermal properties, as well as unique functionalization opportunities through both genetic and enzymatic means. An overview of current protein-based materials, their properties and uses in biomedicine will be provided, with a focus on the advantages of ELPs. Applications of these biomaterials as imaging and therapeutic delivery agents will be discussed. Finally, broader implications and future directions of these materials as diagnostic and therapeutic systems will be explored.
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Affiliation(s)
- Jennifer E Gagner
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, and the Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215, USA
| | - Wookhyun Kim
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, and the Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215, USA
| | - Elliot L Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, and the Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215, USA.
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28
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Whittaker J, Balu R, Choudhury NR, Dutta NK. Biomimetic protein-based elastomeric hydrogels for biomedical applications. POLYM INT 2014. [DOI: 10.1002/pi.4670] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jasmin Whittaker
- Ian Wark Research Institute, Mawson Lakes Campus; University of South Australia; Mawson Lakes Adelaide SA 5095 Australia
| | - Rajkamal Balu
- Ian Wark Research Institute, Mawson Lakes Campus; University of South Australia; Mawson Lakes Adelaide SA 5095 Australia
| | - Namita R. Choudhury
- Ian Wark Research Institute, Mawson Lakes Campus; University of South Australia; Mawson Lakes Adelaide SA 5095 Australia
| | - Naba K. Dutta
- Ian Wark Research Institute, Mawson Lakes Campus; University of South Australia; Mawson Lakes Adelaide SA 5095 Australia
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29
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Sridhar R, Madhaiyan K, Sundarrajan S, Góra A, Venugopal JR, Ramakrishna S. Cross-linking of protein scaffolds for therapeutic applications: PCL nanofibers delivering riboflavin for protein cross-linking. J Mater Chem B 2014; 2:1626-1633. [DOI: 10.1039/c3tb21789b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We propose a new concept of cross-linking natural protein nanofibers using riboflavin following UV treatment, and demonstrate it with gelatin cross-linking in nanofibers, film and solution.
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Affiliation(s)
- Radhakrishnan Sridhar
- Center for Nanofibers and Nanotechnology
- NUSNNI
- National University of Singapore
- Singapore
- Department of Mechanical Engineering
| | | | - Subramanian Sundarrajan
- Center for Nanofibers and Nanotechnology
- NUSNNI
- National University of Singapore
- Singapore
- Department of Mechanical Engineering
| | - Aleksander Góra
- Center for Nanofibers and Nanotechnology
- NUSNNI
- National University of Singapore
- Singapore
- Department of Mechanical Engineering
| | - Jayarama Reddy Venugopal
- Center for Nanofibers and Nanotechnology
- NUSNNI
- National University of Singapore
- Singapore
- NUS Nanoscience & Nanotechnology Initiative
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology
- NUSNNI
- National University of Singapore
- Singapore
- Department of Mechanical Engineering
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30
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Khademhosseini A, Peppas NA. Micro- and nanoengineering of biomaterials for healthcare applications. Adv Healthc Mater 2013; 2:10-2. [PMID: 23299936 DOI: 10.1002/adhm.201200444] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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