201
|
Guo Z, Zhang T, Fang K, Dou J, Zhou N, Ma X, Gu N. The effects of macroporosity and stiffness of poly[(methyl vinyl ether)-alt-(maleic acid)] cross-linked egg white simulations of an aged extracellular matrix on the proliferation of ovarian cancer cells. RSC Adv 2016. [DOI: 10.1039/c6ra05134k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effects of macroporosity and stiffness of P(MVE-alt-MA) cross-linked EW simulations of an aged ECM on the proliferation of cancer cells.
Collapse
Affiliation(s)
- Zhenchao Guo
- State Key Laboratory of Bioelectronics
- Jiangsu Key Laboratory for Biomaterials and Devices
- School of Biological Science and Medical Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Southeast University
- Nanjing 210096
| | - Tianzhu Zhang
- State Key Laboratory of Bioelectronics
- Jiangsu Key Laboratory for Biomaterials and Devices
- School of Biological Science and Medical Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Southeast University
- Nanjing 210096
| | - Kun Fang
- State Key Laboratory of Bioelectronics
- Jiangsu Key Laboratory for Biomaterials and Devices
- School of Biological Science and Medical Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Southeast University
- Nanjing 210096
| | - Jun Dou
- Medical School
- Southeast University
- Nanjing 210009
- China
| | - Naizhen Zhou
- State Key Laboratory of Bioelectronics
- Jiangsu Key Laboratory for Biomaterials and Devices
- School of Biological Science and Medical Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Southeast University
- Nanjing 210096
| | - Xiaoe Ma
- State Key Laboratory of Bioelectronics
- Jiangsu Key Laboratory for Biomaterials and Devices
- School of Biological Science and Medical Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Southeast University
- Nanjing 210096
| | - Ning Gu
- State Key Laboratory of Bioelectronics
- Jiangsu Key Laboratory for Biomaterials and Devices
- School of Biological Science and Medical Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Southeast University
- Nanjing 210096
| |
Collapse
|
202
|
Lequoy P, Murschel F, Liberelle B, Lerouge S, De Crescenzo G. Controlled co-immobilization of EGF and VEGF to optimize vascular cell survival. Acta Biomater 2016; 29:239-247. [PMID: 26485166 DOI: 10.1016/j.actbio.2015.10.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 09/09/2015] [Accepted: 10/16/2015] [Indexed: 01/02/2023]
Abstract
Growth factors (GFs) are potent signaling molecules that act in a coordinated manner in physiological processes such as tissue healing or angiogenesis. Co-immobilizing GFs on materials while preserving their bioactivity still represents a major challenge in the field of tissue regeneration and bioactive implants. In this study, we explore the potential of an oriented immobilization technique based on two high affinity peptides, namely the Ecoil and Kcoil, to allow for the simultaneous capture of the epidermal growth factor (EGF) and the vascular endothelial growth factor (VEGF) on a chondroitin sulfate coating. This glycosaminoglycan layer was selected as it promotes cell adhesion but reduces non-specific adsorption of plasma proteins. We demonstrate here that both Ecoil-tagged GFs can be successfully immobilized on chondroitin sulfate surfaces that had been pre-decorated with the Kcoil peptide. As shown by direct ELISA, changing the incubation concentration of the various GFs enabled to control their grafted amount. Moreover, cell survival studies with endothelial and smooth muscle cells confirmed that our oriented tethering strategy preserved GF bioactivity. Of salient interest, co-immobilizing EGF and VEGF led to better cell survival compared to each GF captured alone, suggesting a synergistic effect of these GFs. Altogether, these results demonstrate the potential of coiled-coil oriented GF tethering for the co-immobilization of macromolecules; it thus open the way to the generation of biomaterials surfaces with fine-tuned biological properties. STATEMENT OF SIGNIFICANCE Growth factors are potent signaling molecules that act in a coordinated manner in physiological processes such as tissue healing or angiogenesis. Controlled coimmobilization of growth factors on biomaterials while preserving their bioactivity represents a major challenge in the field of tissue regeneration and bioactive implants. This study demonstrates the potential of an oriented immobilization technique based on two high affinity peptides to allow for the simultaneous capture of epidermal growth factor (EGF) and vascular endothelial growth factor (VEGF). Our system allowed an efficient control on growth factor immobilization by adjusting the incubation concentrations of EGF and VEGF. Of salient interest, co-immobilizing of specific ratios of EGF and VEGF demonstrated a synergistic effect on cell survival compared to each GF captured alone.
Collapse
Affiliation(s)
- Pauline Lequoy
- Department of Mechanical Engineering, École de technologie supérieure (ÉTS), 1100 boul. Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada; Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), 900 St Denis, Tour Viger, Montréal, QC H2X 0A9, Canada
| | - Frederic Murschel
- Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal, QC H3C 3A7, Canada
| | - Benoit Liberelle
- Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal, QC H3C 3A7, Canada
| | - Sophie Lerouge
- Department of Mechanical Engineering, École de technologie supérieure (ÉTS), 1100 boul. Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada; Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), 900 St Denis, Tour Viger, Montréal, QC H2X 0A9, Canada.
| | - Gregory De Crescenzo
- Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal, QC H3C 3A7, Canada.
| |
Collapse
|
203
|
Roberts JJ, Farrugia BL, Green RA, Rnjak-Kovacina J, Martens PJ. In situ formation of poly(vinyl alcohol)-heparin hydrogels for mild encapsulation and prolonged release of basic fibroblast growth factor and vascular endothelial growth factor. J Tissue Eng 2016; 7:2041731416677132. [PMID: 27895888 PMCID: PMC5117248 DOI: 10.1177/2041731416677132] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 10/11/2016] [Indexed: 12/12/2022] Open
Abstract
Heparin-based hydrogels are attractive for controlled growth factor delivery, due to the native ability of heparin to bind and stabilize growth factors. Basic fibroblast growth factor and vascular endothelial growth factor are heparin-binding growth factors that synergistically enhance angiogenesis. Mild, in situ encapsulation of both basic fibroblast growth factor and vascular endothelial growth factor and subsequent bioactive dual release has not been demonstrated from heparin-crosslinked hydrogels, and the combined long-term delivery of both growth factors from biomaterials is still a major challenge. Both basic fibroblast growth factor and vascular endothelial growth factor were encapsulated in poly(vinyl alcohol)-heparin hydrogels and demonstrated controlled release. A model cell line, BaF32, was used to show bioactivity of heparin and basic fibroblast growth factor released from the gels over multiple days. Released basic fibroblast growth factor promoted higher human umbilical vein endothelial cell outgrowth over 24 h and proliferation for 3 days than the poly(vinyl alcohol)-heparin hydrogels alone. The release of vascular endothelial growth factor from poly(vinyl alcohol)-heparin hydrogels promoted human umbilical vein endothelial cell outgrowth but not significant proliferation. Dual-growth factor release of basic fibroblast growth factor and vascular endothelial growth factor from poly(vinyl alcohol)-heparin hydrogels resulted in a synergistic effect with significantly higher human umbilical vein endothelial cell outgrowth compared to basic fibroblast growth factor or vascular endothelial growth factor alone. Poly(vinyl alcohol)-heparin hydrogels allowed bioactive growth factor encapsulation and provided controlled release of multiple growth factors which is beneficial toward tissue regeneration applications.
Collapse
Affiliation(s)
| | | | | | | | - Penny J Martens
- Graduate School of Biomedical Engineering, UNSW Australia, Sydney, NSW, Australia
| |
Collapse
|
204
|
Ma L, Cheng C, He C, Nie C, Deng J, Sun S, Zhao C. Substrate-Independent Robust and Heparin-Mimetic Hydrogel Thin Film Coating via Combined LbL Self-Assembly and Mussel-Inspired Post-Cross-linking. ACS APPLIED MATERIALS & INTERFACES 2015; 7:26050-26062. [PMID: 26553500 DOI: 10.1021/acsami.5b09634] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, we designed a robust and heparin-mimetic hydrogel thin film coating via combined layer-by-layer (LbL) self-assembly and mussel-inspired post-cross-linking. Dopamine-grafted heparin-like/-mimetic polymers (DA-g-HepLP) with abundant carboxylic and sulfonic groups were synthesized by the conjugation of adhesive molecule, DA, which exhibited substrate-independent adhesive affinity to various solid surfaces because of the formation of irreversible covalent bonds. The hydrogel thin film coated substrates were prepared by a three-step reaction: First, the substrates were coated with DA-g-HepLP to generate negatively charged surfaces. Then, multilayers were obtained via LbL coating of chitosan and the DA-g-HepLP. Finally, the noncovalent multilayers were oxidatively cross-linked by NaIO4. Surface ATR-FTIR and XPS spectra confirmed the successful fabrication of the hydrogel thin film coatings onto membrane substrates; SEM images revealed that the substrate-independent coatings owned 3D porous morphology. The soaking tests in highly alkaline, acid, and concentrated salt solutions indicated that the cross-linked hydrogel thin film coatings owned high chemical resistance. In comparison, the soaking tests in physiological solution indicated that the cross-linked hydrogel coatings owned excellent long-term stability. The live/dead cell staining and morphology observations of the adhered cells revealed that the heparin-mimetic hydrogel thin film coated substrates had low cell toxicity and high promotion ability for cell proliferation. Furthermore, systematic in vitro investigations of protein adsorption, platelet adhesion, blood clotting, and blood-related complement activation confirmed that the hydrogel film coated substrates showed excellent hemocompatibility. Both the results of inhibition zone and bactericidal activity indicated that the gentamycin sulfate loaded hydrogel thin films had significant inhibition capability toward both Escherichia coli and Staphylococcus aureus bacteria. Combined the above advantages, it is believed that the designed heparin-mimetic hydrogel thin films may show high potential for applications in various biological and clinical fields, such as long-term hemocompatible and drug-loading materials for implants.
Collapse
Affiliation(s)
- Lang Ma
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering and ‡National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610065, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering and ‡National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610065, China
| | - Chao He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering and ‡National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610065, China
| | - Chuanxiong Nie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering and ‡National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610065, China
| | - Jie Deng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering and ‡National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610065, China
| | - Shudong Sun
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering and ‡National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610065, China
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering and ‡National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610065, China
| |
Collapse
|
205
|
Sridhar. BV, Dailing EA, Brock JL, Stansbury JW, Randolph MA, Anseth KS. A Biosynthetic Scaffold that Facilitates Chondrocyte-Mediated Degradation and Promotes Articular Cartilage Extracellular Matrix Deposition. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2015; 1:11-21. [PMID: 26900597 PMCID: PMC4758520 DOI: 10.1007/s40883-015-0002-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Articular cartilage remains a significant clinical challenge to repair because of its limited self-healing capacity. Interest has grown in the delivery of autologous chondrocytes to cartilage defects, and combining cell-based therapies with scaffolds that capture aspects of native tissue and allow cell-mediated remodeling could improve outcomes. Currently, scaffold-based therapies with encapsulated chondrocytes permit matrix production; however, resorption of the scaffold often does not match the rate of matrix production by chondrocytes, which can limit functional tissue regeneration. Here, we designed a hybrid biosynthetic system consisting of poly (ethylene glycol) (PEG) endcapped with thiols and crosslinked by norbornene-functionalized gelatin via a thiol-ene photopolymerization. The protein crosslinker was selected to facilitate chondrocyte-mediated scaffold remodeling and matrix deposition. Gelatin was functionalized with norbornene to varying degrees (~4-17 norbornenes/gelatin), and the shear modulus of the resulting hydrogels was characterized (<0.1-0.5 kPa). Degradation of the crosslinked PEG-gelatin hydrogels by chondrocyte-secreted enzymes was confirmed by gel permeation chromatography. Finally, chondrocytes encapsulated in these biosynthetic scaffolds showed significantly increased glycosaminoglycan deposition over just 14 days of culture, while maintaining high levels of viability and producing a distributed matrix. These results indicate the potential of a hybrid PEG-gelatin hydrogel to permit chondrocyte-mediated remodeling and promote articular cartilage matrix production. Tunable scaffolds that can easily permit chondrocyte-mediated remodeling may be useful in designing treatment options for cartilage tissue engineering applications.
Collapse
Affiliation(s)
- Balaji V. Sridhar.
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado
- BioFrontiers Institute, University of Colorado, Boulder, Colorado
| | - Eric A. Dailing
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado
| | - J. Logan Brock
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado
- BioFrontiers Institute, University of Colorado, Boulder, Colorado
| | - Jeffrey W. Stansbury
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado, Aurora, Colorado
| | - Mark A. Randolph
- Department of Orthopedic Surgery, Laboratory for Musculoskeletal Tissue Engineering, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
- Plastic Surgery Research Laboratory, Division of Plastic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Kristi S. Anseth
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado
- BioFrontiers Institute, University of Colorado, Boulder, Colorado
- Howard Hughes Medical Institute, University of Colorado, Boulder, Colorado
| |
Collapse
|
206
|
Conducting polymer-based multilayer films for instructive biomaterial coatings. Future Sci OA 2015; 1:FSO79. [PMID: 28031928 PMCID: PMC5137882 DOI: 10.4155/fso.15.79] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 09/04/2015] [Indexed: 01/03/2023] Open
Abstract
Aim: To demonstrate the design, fabrication and testing of conformable conducting biomaterials that encourage cell alignment. Materials & methods: Thin conducting composite biomaterials based on multilayer films of poly(3.4-ethylenedioxythiophene) derivatives, chitosan and gelatin were prepared in a layer-by-layer fashion. Fibroblasts were observed with fluorescence microscopy and their alignment (relative to the dipping direction and direction of electrical current passed through the films) was determined using ImageJ. Results: Fibroblasts adhered to and proliferated on the films. Fibroblasts aligned with the dipping direction used during film preparation and this was enhanced by a DC current. Conclusion: We report the preparation of conducting polymer-based films that enhance the alignment of fibroblasts on their surface which is an important feature of a variety of tissues.
Lay abstract: Cells inhabit environments known as the extracellular matrix (ECM) which consists of a mixture of different biomolecules, and the precise composition and topographical properties are different in different tissues (e.g., bone, brain, muscle, skin). Cells interact intimately with the ECM, not only constructing the biomolecules, but assist its organization in 3D space, and its degradation (which is important for tissue remodeling); reciprocally, cells respond to the ECM (e.g., by modifying their size, shape, etc). Cellular alignment is observed in organs and tissues such as bones, muscles and skin, and this alignment is important for the healthy functioning of the organ/tissue. Here, we present a novel method of aligning cells on biomaterials, simply by applying an electrical current through the biomaterial.
Collapse
|
207
|
Azevedo HS, Pashkuleva I. Biomimetic supramolecular designs for the controlled release of growth factors in bone regeneration. Adv Drug Deliv Rev 2015; 94:63-76. [PMID: 26325686 DOI: 10.1016/j.addr.2015.08.003] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 08/17/2015] [Accepted: 08/25/2015] [Indexed: 12/13/2022]
Abstract
The extracellular matrix (ECM) of tissues is an assembly of insoluble macromolecules that specifically interact with soluble bioactive molecules and regulate their distribution and availability to cells. Recapitulating this ability has been an important target in controlled growth factor delivery strategies for tissue regeneration and requires the design of multifunctional carriers. This review describes the integration of supramolecular interactions on the design of delivery strategies that encompass self-assembling and engineered affinity components to construct advanced biomimetic carriers for growth factor delivery. Several glycan- and peptide-based self-assemblies reported in the literature are highlighted and commented upon. These examples demonstrate how molecular design and chemistry are successfully employed to create versatile multifunctional molecules which self-assemble/disassemble in a precisely predicted manner, thus controlling compartmentalization, transport and delivery. Finally, we discuss whether recent advances in the design and preparation of supramolecular delivery systems have been sufficient to drive real translation towards a clinical impact.
Collapse
Affiliation(s)
- Helena S Azevedo
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK; Institute of Bioengineering, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
| | - Iva Pashkuleva
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| |
Collapse
|
208
|
Martino MM, Briquez PS, Maruyama K, Hubbell JA. Extracellular matrix-inspired growth factor delivery systems for bone regeneration. Adv Drug Deliv Rev 2015; 94:41-52. [PMID: 25895621 DOI: 10.1016/j.addr.2015.04.007] [Citation(s) in RCA: 172] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 03/27/2015] [Accepted: 04/11/2015] [Indexed: 12/22/2022]
Abstract
Growth factors are very promising molecules to enhance bone regeneration. However, their translation to clinical use has been seriously limited, facing issues related to safety and cost-effectiveness. These problems derive from the vastly supra-physiological doses of growth factor used without optimized delivery systems. Therefore, these issues have motivated the development of new delivery systems allowing better control of the spatiotemporal release and signaling of growth factors. Because the extracellular matrix (ECM) naturally plays a fundamental role in coordinating growth factor activity in vivo, a number of novel delivery systems have been inspired by the growth factor regulatory function of the ECM. After introducing the role of growth factors during the bone regeneration process, this review exposes different issues that growth factor-based therapies have encountered in the clinic and highlights recent delivery approaches based on the natural interaction between growth factor and the ECM.
Collapse
Affiliation(s)
- Mikaël M Martino
- Immunology Frontier Research Center, Osaka University, Osaka, Japan.
| | - Priscilla S Briquez
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Kenta Maruyama
- Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Jeffrey A Hubbell
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA; Materials Science Division, Argonne National Laboratory, Argonne, IL, USA.
| |
Collapse
|
209
|
Park KM, Gerecht S. Polymeric hydrogels as artificial extracellular microenvironments for cancer research. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.06.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
210
|
Wang L, Li H, Chen S, Nie C, Cheng C, Zhao C. Interfacial Self-Assembly of Heparin-Mimetic Multilayer on Membrane Substrate as Effective Antithrombotic, Endothelialization, and Antibacterial Coating. ACS Biomater Sci Eng 2015; 1:1183-1193. [PMID: 33429557 DOI: 10.1021/acsbiomaterials.5b00320] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this study, we design the interfacial self-assembly of heparin-mimetic multilayer on poly(ether sulfone) (PES) membrane, which can endow the substrate with excellent cytocompatibility, highly hemocompatibility and enhanced antibacterial properties. The coated 3D sponge-like multilayer was fabricated by surface engineered layer by layer assembly of sulfonic amino polyether sulfone (SNPES) and quaternized chitosan (QC). The cell morphology observation and viability evaluation suggested that the assembled multilayer coating had remarkable cytocompatibility with endothelial cells due to the synergistic promotion of bovine serum albumin adsorption and heparin-mimetic groups; which further indicated that surface endothelialization could be achieved on the heparin-mimetic multilayer. The systematical tests of antithrombotic and blood activation indicated that the heparin-mimetic multilayer-coated membrane owned significantly suppressed adsorption of bovine serum fibrinogen, platelet adhesion and activation, prolonged clotting times, as well as lower activation of blood complement. Furthermore, the antibacterial test suggested the multilayer coated substrates exhibited obvious inhibition capability for both Escherichia coli and Staphylococcus aureus. Therefore, we believe that the developed SNPES/QC multilayer on PES membrane show great potential as a multifunctional coating toward versatile biomedical applications due to the integrated and highly effective antithrombotic, endothelialization, and antibacterial properties.
Collapse
Affiliation(s)
- Lingren Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.,Jiangsu Provincial Key Laboratory for Interventional Medical Devices. Huaiyin Institute of Technology, Huaian 223003, China
| | - Hao Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Shuai Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Chuanxiong Nie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.,Department of Chemistry and Biochemistry, Freie Universitat Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| |
Collapse
|
211
|
Yang J, Yao MH, Du MS, Jin RM, Zhao DH, Ma J, Ma ZY, Zhao YD, Liu B. A near-infrared light-controlled system for reversible presentation of bioactive ligands using polypeptide-engineered functionalized gold nanorods. Chem Commun (Camb) 2015; 51:2569-72. [PMID: 25566852 DOI: 10.1039/c4cc09516b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A near-infrared light-controlled hybrid platform with polypeptide-engineered functionalized gold nanorods has been designed for reversible presentation of the immobilized ligands to cell surface receptors on the engineered materials.
Collapse
Affiliation(s)
- Jie Yang
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Hubei, Wuhan 430074, P. R. China.
| | | | | | | | | | | | | | | | | |
Collapse
|
212
|
Gouveia RM, Hamley IW, Connon CJ. Bio-fabrication and physiological self-release of tissue equivalents using smart peptide amphiphile templates. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:242. [PMID: 26411438 DOI: 10.1007/s10856-015-5581-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
In this study we applied a smart biomaterial formed from a self-assembling, multi-functional synthetic peptide amphiphile (PA) to coat substrates with various surface chemistries. The combination of PA coating and alignment-inducing functionalised substrates provided a template to instruct human corneal stromal fibroblasts to adhere, become aligned and then bio-fabricate a highly-ordered, multi-layered, three-dimensional tissue by depositing an aligned, native-like extracellular matrix. The newly-formed corneal tissue equivalent was subsequently able to eliminate the adhesive properties of the template and govern its own complete release via the action of endogenous proteases. Tissues recovered through this method were structurally stable, easily handled, and carrier-free. Furthermore, topographical and mechanical analysis by atomic force microscopy showed that tissue equivalents formed on the alignment-inducing PA template had highly-ordered, compact collagen deposition, with a two-fold higher elastic modulus compared to the less compact tissues produced on the non-alignment template, the PA-coated glass. We suggest that this technology represents a new paradigm in tissue engineering and regenerative medicine, whereby all processes for the bio-fabrication and subsequent self-release of natural, bio-prosthetic human tissues depend solely on simple template-tissue feedback interactions.
Collapse
Affiliation(s)
- Ricardo M Gouveia
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Newcastle upon Tyne, NE1 3BZ, UK
| | - Ian W Hamley
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Che J Connon
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Newcastle upon Tyne, NE1 3BZ, UK.
| |
Collapse
|
213
|
Ahadian S, Sadeghian RB, Salehi S, Ostrovidov S, Bae H, Ramalingam M, Khademhosseini A. Bioconjugated Hydrogels for Tissue Engineering and Regenerative Medicine. Bioconjug Chem 2015; 26:1984-2001. [DOI: 10.1021/acs.bioconjchem.5b00360] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Samad Ahadian
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Ramin Banan Sadeghian
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Sahar Salehi
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Serge Ostrovidov
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Hojae Bae
- College
of Animal Bioscience and Technology, Department of Bioindustrial Technologies, Konkuk University, Hwayang-dong,
Kwangjin-gu, Seoul 143-701, Republic of Korea
| | - Murugan Ramalingam
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
- Centre
for Stem Cell Research, Institute for Stem Cell Biology and Regenerative Medicine, Christian Medical College Campus, Vellore 632002, India
| | - Ali Khademhosseini
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
- College
of Animal Bioscience and Technology, Department of Bioindustrial Technologies, Konkuk University, Hwayang-dong,
Kwangjin-gu, Seoul 143-701, Republic of Korea
- Department
of Medicine, Center for Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
| |
Collapse
|
214
|
Kuang R, Zhang Z, Jin X, Hu J, Gupte MJ, Ni L, Ma PX. Nanofibrous spongy microspheres enhance odontogenic differentiation of human dental pulp stem cells. Adv Healthc Mater 2015; 4:1993-2000. [PMID: 26138254 DOI: 10.1002/adhm.201500308] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 06/08/2015] [Indexed: 01/02/2023]
Abstract
Dentin regeneration is challenging due to its complicated anatomical structure and the shortage of odontoblasts. In this study, a novel injectable cell carrier, nanofibrous spongy microspheres (NF-SMS), is developed for dentin regeneration. Biodegradable and biocompatible poly(l-lactic acid)-block-poly(l-lysine) are synthesized and fabricated into NF-SMS using self-assembly and thermally induced phase separation techniques. It is hypothesized that NF-SMS with interconnected pores and nanofibers can enhance the proliferation and odontogenic differentiation of human dental pulp stem cells (hDPSCs), compared to nanofibrous microspheres (NF-MS) without pore structure and conventional solid microspheres (S-MS) with neither nanofibers nor pore structure. During the first 9 d in culture, hDPSCs proliferate significantly faster on NF-SMS than on NF-MS or S-MS (p < 0.05). Following in vitro odontogenic induction, all the examined odontogenic genes (alkaline phosphatase content, osteocalcin, bone sialoprotein, collagen 1, dentin sialophosphoprotein (DSPP)), calcium content, and DSPP protein content are found significantly higher in the NF-SMS group than in the control groups. Furthermore, 6 weeks after subcutaneous injection of hDPSCs and microspheres into nude mice, histological analysis shows that NF-SMS support superior dentin-like tissue formation compared to NF-MS or S-MS. Taken together, NF-SMS have great potential as an injectable cell carrier for dentin regeneration.
Collapse
Affiliation(s)
- Rong Kuang
- State Key Laboratory of Military Stomatology; Department of Operative Dentistry and Endodontics, School of Stomatology; The Fourth Military Medical University; Xi'an 710032 P. R. China
- Department of Biologic and Materials Sciences; University of Michigan; Ann Arbor MI 48109 USA
| | - Zhanpeng Zhang
- Department of Biomedical Engineering; University of Michigan; Ann Arbor MI 48109 USA
| | - Xiaobing Jin
- Department of Biologic and Materials Sciences; University of Michigan; Ann Arbor MI 48109 USA
| | - Jiang Hu
- Department of Biologic and Materials Sciences; University of Michigan; Ann Arbor MI 48109 USA
| | - Melanie J. Gupte
- Department of Biomedical Engineering; University of Michigan; Ann Arbor MI 48109 USA
| | - Longxing Ni
- State Key Laboratory of Military Stomatology; Department of Operative Dentistry and Endodontics, School of Stomatology; The Fourth Military Medical University; Xi'an 710032 P. R. China
| | - Peter X. Ma
- Department of Biologic and Materials Sciences; University of Michigan; Ann Arbor MI 48109 USA
- Department of Biomedical Engineering; University of Michigan; Ann Arbor MI 48109 USA
- Macromolecular Science and Engineering Center; University of Michigan; Ann Arbor MI 48109 USA
- Department of Materials Science and Engineering; University of Michigan; Ann Arbor MI 48109 USA
| |
Collapse
|
215
|
Supracolloidal Assemblies as Sacrificial Templates for Porous Silk-Based Biomaterials. Int J Mol Sci 2015; 16:20511-22. [PMID: 26343650 PMCID: PMC4613216 DOI: 10.3390/ijms160920511] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 08/18/2015] [Accepted: 08/19/2015] [Indexed: 11/17/2022] Open
Abstract
Tissues in the body are hierarchically structured composite materials with tissue-specific properties. Urea self-assembles via hydrogen bonding interactions into crystalline supracolloidal assemblies that can be used to impart macroscopic pores to polymer-based tissue scaffolds. In this communication, we explain the solvent interactions governing the solubility of urea and thereby the scope of compatible polymers. We also highlight the role of solvent interactions on the morphology of the resulting supracolloidal crystals. We elucidate the role of polymer-urea interactions on the morphology of the pores in the resulting biomaterials. Finally, we demonstrate that it is possible to use our urea templating methodology to prepare Bombyx mori silk protein-based biomaterials with pores that human dermal fibroblasts respond to by aligning with the long axis of the pores. This methodology has potential for application in a variety of different tissue engineering niches in which cell alignment is observed, including skin, bone, muscle and nerve.
Collapse
|
216
|
Gao Y, Jacot JG. Stem Cells and Progenitor Cells for Tissue-Engineered Solutions to Congenital Heart Defects. Biomark Insights 2015; 10:139-46. [PMID: 26379417 PMCID: PMC4554358 DOI: 10.4137/bmi.s20058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/01/2015] [Accepted: 03/04/2015] [Indexed: 02/06/2023] Open
Abstract
Synthetic patches and fixed grafts currently used in the repair of congenital heart defects are nonliving, noncontractile, and not electrically responsive, leading to increased risk of complication, reoperation, and sudden cardiac death. Studies suggest that tissue-engineered patches made from living, functional cells could grow with the patient, facilitate healing, and help recover cardiac function. In this paper, we review the research into possible sources of cardiomyocytes and other cardiac cells, including embryonic stem cells, induced pluripotent stem cells, mesenchymal stem cells, adipose-derived stem cells, umbilical cord blood cells, amniotic fluid-derived stem cells, and cardiac progenitor cells. Each cell source has advantages, but also has technical hurdles to overcome, including heterogeneity, functional maturity, immunogenicity, and pathogenicity. Additionally, biomaterials used as patch materials will need to attract and support desired cells and induce minimal immune responses.
Collapse
Affiliation(s)
- Yang Gao
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Jeffrey G Jacot
- Department of Bioengineering, Rice University, Houston, TX, USA
- Congenital Heart Surgery Services, Texas Children’s Hospital, Houston, TX, USA
| |
Collapse
|
217
|
Abstract
Medical advances have led to a welcome increase in life expectancy. However, accompanying longevity introduces new challenges: increases in age-related diseases and associated reductions in quality of life. The loss of skeletal tissue that can accompany trauma, injury, disease or advancing years can result in significant morbidity and significant socio-economic cost and emphasise the need for new, more reliable skeletal regeneration strategies. To address the unmet need for bone augmentation, tissue engineering and regenerative medicine have come to the fore in recent years with new approaches for de novo skeletal tissue formation. Typically, these approaches seek to harness stem cells, innovative scaffolds and biological factors that promise enhanced and more reliable bone formation strategies to improve the quality of life for many. This review provides an overview of recent developments in bone tissue engineering focusing on skeletal stem cells, vascular development, bone formation and the translation from preclinical in vivo models to clinical delivery.
Collapse
|
218
|
Briquez PS, Hubbell JA, Martino MM. Extracellular Matrix-Inspired Growth Factor Delivery Systems for Skin Wound Healing. Adv Wound Care (New Rochelle) 2015; 4:479-489. [PMID: 26244104 DOI: 10.1089/wound.2014.0603] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 10/31/2014] [Indexed: 12/15/2022] Open
Abstract
Significance: Growth factors are very promising molecules for the treatment of skin wounds. However, their translation to clinical use has been seriously limited, facing issues related to safety and cost-effectiveness. These problems may derive from the fact that growth factors are used at vastly supra-physiological levels without optimized delivery systems. Recent Advances: The extracellular matrix (ECM) plays a fundamental role in coordinating growth factor signaling. Therefore, understanding the mechanisms by which the ECM modulates growth factor activity is key for designing efficient growth factor-based therapies. Recently, several growth factor-binding domains have been discovered within various ECM proteins, and growth factor delivery systems integrating these ECM growth factor-binding domains showed promising results in animal models of skin wound healing. Moreover, a novel strategy consisting of engineering growth factors to target endogenous ECM could substantially enhance their efficacy, even when used at low doses. Critical Issues: Optimal delivery of growth factors often requires complex engineered biomaterial matrices, which can face regulatory issues for clinical translation. To simplify delivery systems and render strategies more applicable, growth factors can be engineered to optimally function with clinically approved biomaterials or with endogenous ECM present at the delivery site. Future Directions: Further development and clinical trials will reveal whether growth factor-based therapies can be used as main therapeutic approaches for skin wound healing. The future impact of these therapies will depend on our capacity to deliver growth factors more precisely, to improve efficacy, safety, and cost-effectiveness.
Collapse
Affiliation(s)
- Priscilla S. Briquez
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Jeffrey A. Hubbell
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
- Institute for Molecular Engineering, University of Chicago, Chicago, Illinois
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois
| | - Mikaël M. Martino
- World Premier International Immunology Frontier Research Center, Osaka University, Osaka, Japan
| |
Collapse
|
219
|
Ahmad E, Fatima MT, Hoque M, Owais M, Saleemuddin M. Fibrin matrices: The versatile therapeutic delivery systems. Int J Biol Macromol 2015; 81:121-36. [PMID: 26231328 DOI: 10.1016/j.ijbiomac.2015.07.054] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Revised: 07/24/2015] [Accepted: 07/26/2015] [Indexed: 12/12/2022]
Abstract
Fibrin sealants, that have been employed for over a century by surgeons to stop post surgery bleeding, are finding novel applications in the controlled delivery of antibiotics and several other therapeutics. Fibrinogen can be easily purified from blood plasma and converted by thrombolysis to fibrin that undergoes spontaneous aggregation to form insoluble clot. During the gelling, fibrin can be formulated into films, clots, threads, microbeads, nanoconstructs and nanoparticles. Whole plasma clots in the form of beads and microparticles can also be prepared by activating endogenous thrombin, for possible drug delivery. Fibrin formulations offer remarkable scope for controlling the porosity as well as in vivo degradability and hence the release of the associated therapeutics. Binding/covalent-linking of therapeutics to the fibrin matrix, crosslinking of the matrix with bifunctional reagents and coentrapment of protease inhibitors have been successful in regulating both in vitro and in vivo release of the therapeutics. The release rates can also be remarkably lowered by preentrapment of therapeutics in insoluble particles like liposomes or by anchoring them to the matrix via molecules that bind them as well as fibrin.
Collapse
Affiliation(s)
- Ejaj Ahmad
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | | | - Mehboob Hoque
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohammad Owais
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohammed Saleemuddin
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India.
| |
Collapse
|
220
|
Affiliation(s)
- Rúben F. Pereira
- Centre for Rapid and Sustainable Product Development (CDRsp), Polytechnic Institute of Leiria; Marinha Grande 2430-028 Portugal
- Instituto de Investigação e Inovação em Saúde, (I3S) Universidade do Porto; Porto 4200-393 Portugal
- Instituto Nacional de Engenharia Biomédica (INEB), Universidade do Porto; Porto 4150-180 Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto; Porto 4050-313 Portugal
| | - Paulo J. Bártolo
- School of Mechanical, Aerospace and Civil Engineering, University of Manchester; Manchester M13 9PL United Kingdom
- Manchester Institute of Biotechnology, University of Manchester; Manchester M1 7DN United Kingdom
| |
Collapse
|
221
|
Fan M, Ma Y, Mao J, Zhang Z, Tan H. Cytocompatible in situ forming chitosan/hyaluronan hydrogels via a metal-free click chemistry for soft tissue engineering. Acta Biomater 2015; 20:60-68. [PMID: 25839124 DOI: 10.1016/j.actbio.2015.03.033] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 03/11/2015] [Accepted: 03/27/2015] [Indexed: 12/22/2022]
Abstract
Injectable hydrogels are important cell scaffolding materials for tissue engineering and regenerative medicine. Here, we report a new class of biocompatible and biodegradable polysaccharide hydrogels derived from chitosan and hyaluronan via a metal-free click chemistry, without the addition of copper catalyst. For the metal-free click reaction, chitosan and hyaluronan were modified with oxanorbornadiene (OB) and 11-azido-3,6,9-trioxaundecan-1-amine (AA), respectively. The gelation is attributed to the triazole ring formation between OB and azido groups of polysaccharide derivatives. The molecular structures were verified by FT-IR spectroscopy and elemental analysis, giving substitution degrees of 58% and 47% for chitosan-OB and hyaluronan-AA, respectively. The in vitro gelation, morphologies, equilibrium swelling, compressive modulus and degradation of the composite hydrogels were examined. The potential of the metal-free hydrogel as a cell scaffold was demonstrated by encapsulation of human adipose-derived stem cells (ASCs) within the gel matrix in vitro. Cell culture showed that this metal-free hydrogel could support survival and proliferation of ASCs. A preliminary in vivo study demonstrated the usefulness of the hydrogel as an injectable scaffold for adipose tissue engineering. These characteristics provide a potential opportunity to use the metal-free click chemistry in preparation of biocompatible hydrogels for soft tissue engineering applications.
Collapse
Affiliation(s)
- Ming Fan
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Ye Ma
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jiahui Mao
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Ziwei Zhang
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Huaping Tan
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| |
Collapse
|
222
|
Jiang T, Carbone EJ, Lo KWH, Laurencin CT. Electrospinning of polymer nanofibers for tissue regeneration. Prog Polym Sci 2015. [DOI: 10.1016/j.progpolymsci.2014.12.001] [Citation(s) in RCA: 336] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
223
|
Gouveia RM, Castelletto V, Hamley IW, Connon CJ. New self-assembling multifunctional templates for the biofabrication and controlled self-release of cultured tissue. Tissue Eng Part A 2015; 21:1772-84. [PMID: 25712617 PMCID: PMC4449702 DOI: 10.1089/ten.tea.2014.0671] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 02/17/2015] [Indexed: 12/22/2022] Open
Abstract
The need to source live human tissues for research and clinical applications has been a major driving force for the development of new biomaterials. Ideally, these should elicit the formation of scaffold-free tissues with native-like structure and composition. In this study, we describe a biologically interactive coating that combines the fabrication and subsequent self-release of live purposeful tissues using template-cell-environment feedback. This smart coating was formed from a self-assembling peptide amphiphile comprising a protease-cleavable sequence contiguous with a cell attachment and signaling motif. This multifunctional material was subsequently used not only to instruct human corneal or skin fibroblasts to adhere and deposit discreet multiple layers of native extracellular matrix but also to govern their own self-directed release from the template solely through the action of endogenous metalloproteases. Tissues recovered through this physiologically relevant process were carrier-free and structurally and phenotypically equivalent to their natural counterparts. This technology contributes to a new paradigm in regenerative medicine, whereby materials are able to actively direct and respond to cell behavior. The novel application of such materials as a coating capable of directing the formation and detachment of complex tissues solely under physiological conditions can have broad use for fundamental research and in future cell and tissue therapies.
Collapse
Affiliation(s)
- Ricardo M Gouveia
- 1Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Valeria Castelletto
- 2School of Chemistry, Food and Pharmacy, University of Reading, Reading, United Kingdom
| | - Ian W Hamley
- 2School of Chemistry, Food and Pharmacy, University of Reading, Reading, United Kingdom
| | - Che J Connon
- 1Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
| |
Collapse
|
224
|
|
225
|
Macrí-Pellizzeri L, Pelacho B, Sancho A, Iglesias-García O, Simón-Yarza AM, Soriano-Navarro M, González-Granero S, García-Verdugo JM, De-Juan-Pardo EM, Prosper F. Substrate Stiffness and Composition Specifically Direct Differentiation of Induced Pluripotent Stem Cells. Tissue Eng Part A 2015; 21:1633-41. [DOI: 10.1089/ten.tea.2014.0251] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Laura Macrí-Pellizzeri
- Laboratory of Cell Therapy, Division of Oncology, Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain
| | - Beatriz Pelacho
- Laboratory of Cell Therapy, Division of Oncology, Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain
| | - Ana Sancho
- Tissue Engineering and Biomaterials Unit, CEIT and Tecnun, University of Navarra, Pamplona, Spain
| | - Olalla Iglesias-García
- Laboratory of Cell Therapy, Division of Oncology, Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain
| | - Ana María Simón-Yarza
- Laboratory of Cell Therapy, Division of Oncology, Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain
| | - Mario Soriano-Navarro
- Laboratorio de Neurobiología Comparada, Instituto Cavanilles, University of Valencia, Valencia, Spain
| | - Susana González-Granero
- Laboratorio de Neurobiología Comparada, Instituto Cavanilles, University of Valencia, Valencia, Spain
| | - José Manuel García-Verdugo
- Laboratorio de Neurobiología Comparada, Instituto Cavanilles, University of Valencia, Valencia, Spain
- Unidad mixta de Esclerosis Múltiple y Neurorregeneración, IIS Hospital La Fe - UV, Valencia, Spain
| | - Elena M. De-Juan-Pardo
- Tissue Engineering and Biomaterials Unit, CEIT and Tecnun, University of Navarra, Pamplona, Spain
| | - Felipe Prosper
- Laboratory of Cell Therapy, Division of Oncology, Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain
- Hematology and Cell Therapy, Clinica Universidad de Navarra, University of Navarra, Pamplona, Spain
| |
Collapse
|
226
|
Duan B, Hockaday LA, Das S, Xu C, Butcher JT. Comparison of Mesenchymal Stem Cell Source Differentiation Toward Human Pediatric Aortic Valve Interstitial Cells within 3D Engineered Matrices. Tissue Eng Part C Methods 2015; 21:795-807. [PMID: 25594437 DOI: 10.1089/ten.tec.2014.0589] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Living tissue-engineered heart valves (TEHV) would be a major benefit for children who require a replacement with the capacity for growth and biological integration. A persistent challenge for TEHV is accessible human cell source(s) that can mimic native valve cell phenotypes and matrix remodeling characteristics that are essential for long-term function. Mesenchymal stem cells derived from bone marrow (BMMSC) or adipose tissue (ADMSC) are intriguing cell sources for TEHV, but they have not been compared with pediatric human aortic valve interstitial cells (pHAVIC) in relevant 3D environments. In this study, we compared the spontaneous and induced multipotency of ADMSC and BMMSC with that of pHAVIC using different induction media within three-dimensional (3D) bioactive hybrid hydrogels with material modulus comparable to that of aortic heart valve leaflets. pHAVIC possessed some multi-lineage differentiation capacity in response to induction media, but limited to the earliest stages and much less potent than either ADMSC or BMMSC. ADMSC expressed cell phenotype markers more similar to pHAVIC when conditioned in basic fibroblast growth factor (bFGF) containing HAVIC growth medium, while BMMSC generally expressed similar extracellular matrix remodeling characteristics to pHAVIC. Finally, we covalently attached bFGF to PEG monoacrylate linkers and further covalently immobilized in the 3D hybrid hydrogels. Immobilized bFGF upregulated vimentin expression and promoted the fibroblastic differentiation of pHAVIC, ADMSC, and BMMSC. These findings suggest that stem cells retain a heightened capacity for osteogenic differentiation in 3D culture, but can be shifted toward fibroblast differentiation through matrix tethering of bFGF. Such a strategy is likely important for utilizing stem cell sources in heart valve tissue engineering applications.
Collapse
Affiliation(s)
- Bin Duan
- 1 Department of Biomedical Engineering, Cornell University , Ithaca, New York
| | - Laura A Hockaday
- 1 Department of Biomedical Engineering, Cornell University , Ithaca, New York
| | - Shoshana Das
- 2 Department of Biological and Environmental Engineering, Cornell University , Ithaca, New York
| | - Charlie Xu
- 2 Department of Biological and Environmental Engineering, Cornell University , Ithaca, New York
| | - Jonathan T Butcher
- 1 Department of Biomedical Engineering, Cornell University , Ithaca, New York
| |
Collapse
|
227
|
Lin YD, Chang MY, Cheng B, Liu YW, Lin LC, Chen JH, Hsieh PCH. Injection of Peptide nanogels preserves postinfarct diastolic function and prolongs efficacy of cell therapy in pigs. Tissue Eng Part A 2015; 21:1662-71. [PMID: 25686878 DOI: 10.1089/ten.tea.2014.0581] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Accumulating evidence suggests that the benefits of cell therapy for cardiac repair are modest and transient due to progressive harmful cardiac remodeling as well as loss of transplanted cells. We previously demonstrated that injection of peptide nanofibers (NFs) reduces ventricular remodeling and facilitates cell retention at 1 month after acute myocardial infarction (MI) in pigs. However, it remains unclear whether these benefits still persist as the material is being degraded. In this study, 2 mL of placebo or NFs, with or without 1×10(8) mononuclear cells (MNCs), was injected into the pig myocardium after MI (n≥5 in each group), and cardiac function was assessed by echocardiography, including myocardial deformation analyses and catheterization at 3 months post-MI. Our results reveal that MNC-only injection slightly improved cardiac systolic function at 1 month post-MI, but this benefit was lost at later time points (ejection fraction: 42.0±2.3 in MI+normal saline [NS] and 43.5±1.1 in MI+MNCs). In contrast, NF-only injection resulted in improved cardiac diastolic function and reduced pathological remodeling at 3 months post-MI. Furthermore, combined injection of MNCs/NFs provided a greater and longer term cardiac performance (52.1±1.2 in MI+MNCs/NFs, p<0.001 versus MI+NS and MI+MNCs) and 11.3-fold transplanted cell retention. We also found that about 30% NFs remained at 3 months after injection; however, endogenous myofibroblasts were recruited to the NF-injected microenvironment to replace the degraded NFs and preserved cardiac dimensions and mechanics. In conclusion, we demonstrated that injection of NFs contributes to preservation of ventricular mechanical integrity and sustains MNC efficacy at 3 months postinjection.
Collapse
Affiliation(s)
- Yi-Dong Lin
- 1 Institute of Biomedical Sciences , Academia Sinica, Taipei, Taiwan
| | | | | | | | | | | | | |
Collapse
|
228
|
Yu X, Suárez-González D, Khalil AS, Murphy WL. How does the pathophysiological context influence delivery of bone growth factors? Adv Drug Deliv Rev 2015; 84:68-84. [PMID: 25453269 PMCID: PMC4401584 DOI: 10.1016/j.addr.2014.10.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 08/29/2014] [Accepted: 10/07/2014] [Indexed: 02/08/2023]
Abstract
"Orthobiologics" represents an important category of therapeutics for the regeneration of bone defects caused by injuries or diseases, and bone growth factors are a particularly rapidly growing sub-category. Clinical application of bone growth factors has accelerated in the last two decades with the introduction of BMPs into clinical bone repair. Optimal use of growth factor-mediated treatments heavily relies on controlled delivery, which can substantially influence the local growth factor dose, release kinetics, and biological activity. The characteristics of the surrounding environment, or "context", during delivery can dictate growth factor loading efficiency, release and biological activity. This review discusses the influence of the surrounding environment on therapeutic delivery of bone growth factors. We specifically focus on pathophysiological components, including soluble components and cells, and how they can actively influence the therapeutic delivery and perhaps efficacy of bone growth factors.
Collapse
Affiliation(s)
- Xiaohua Yu
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Darilis Suárez-González
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Andrew S Khalil
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - William L Murphy
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, 53705, USA.
| |
Collapse
|
229
|
Leijten J, Chai Y, Papantoniou I, Geris L, Schrooten J, Luyten F. Cell based advanced therapeutic medicinal products for bone repair: Keep it simple? Adv Drug Deliv Rev 2015; 84:30-44. [PMID: 25451134 DOI: 10.1016/j.addr.2014.10.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 09/18/2014] [Accepted: 10/20/2014] [Indexed: 02/08/2023]
Abstract
The development of cell based advanced therapeutic medicinal products (ATMPs) for bone repair has been expected to revolutionize the health care system for the clinical treatment of bone defects. Despite this great promise, the clinical outcomes of the few cell based ATMPs that have been translated into clinical treatments have been far from impressive. In part, the clinical outcomes have been hampered because of the simplicity of the first wave of products. In response the field has set-out and amassed a plethora of complexities to alleviate the simplicity induced limitations. Many of these potential second wave products have remained "stuck" in the development pipeline. This is due to a number of reasons including the lack of a regulatory framework that has been evolving in the last years and the shortage of enabling technologies for industrial manufacturing to deal with these novel complexities. In this review, we reflect on the current ATMPs and give special attention to novel approaches that are able to provide complexity to ATMPs in a straightforward manner. Moreover, we discuss the potential tools able to produce or predict 'goldilocks' ATMPs, which are neither too simple nor too complex.
Collapse
|
230
|
Kim SE, Harker EC, De Leon AC, Advincula RC, Pokorski JK. Coextruded, aligned, and gradient-modified poly(ε-caprolactone) fibers as platforms for neural growth. Biomacromolecules 2015; 16:860-7. [PMID: 25715836 PMCID: PMC5569576 DOI: 10.1021/bm501767x] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polymeric fibers are of increasing interest to regenerative medicine, as materials made from these fibers are porous, allowing for cell infiltration, influx of nutrients, and efflux of waste products. Recently, multilayered coextrusion has emerged as a scalable and rapid fabrication method to yield microscale to submicron fibers. In this report, we describe the multilayered coextrusion of aligned poly(ε-caprolactone) (PCL) fibers, followed by a simple photochemical patterning to create surface-immobilized gradients onto the polymer fibers. PCL fibers were photochemically decorated with a linear gradient of propargyl benzophenone using a gradient photomask to control light source intensity. The pendant alkynes were then able to undergo the copper-catalyzed azide-alkyne cycloaddition reaction with an azide-modified IKVAV peptide to further functionalize the surface. Gradient-modified IKVAV fibers were evaluated for neural cell adhesion and neural differentiation, using PC-12 cells cultured onto the fibers. The aligned gradient fibers provided directional cues for neurite outgrowth and alignment of neural cells, as observed by cellular elongation, neurite differentiation, and orientation. The work presented herein describes a scalable fiber system combined with simple chemical patterning to generate aligned fibers with controlled surface gradients as cell-seeding scaffolds.
Collapse
Affiliation(s)
- Si-Eun Kim
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, United States
| | - Emily C. Harker
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, United States
| | - Al C. De Leon
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, United States
| | - Rigoberto C. Advincula
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, United States
| | - Jonathan K. Pokorski
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, United States
| |
Collapse
|
231
|
Mashinchian O, Turner LA, Dalby MJ, Laurent S, Shokrgozar MA, Bonakdar S, Imani M, Mahmoudi M. Regulation of stem cell fate by nanomaterial substrates. Nanomedicine (Lond) 2015; 10:829-47. [DOI: 10.2217/nnm.14.225] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Stem cells are increasingly studied because of their potential to underpin a range of novel therapies, including regenerative strategies, cell type-specific therapy and tissue repair, among others. Bionanomaterials can mimic the stem cell environment and modulate stem cell differentiation and proliferation. New advances in these fields are presented in this review. This work highlights the importance of topography and elasticity of the nano-/micro-environment, or niche, for the initiation and induction of stem cell differentiation and proliferation.
Collapse
Affiliation(s)
- Omid Mashinchian
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine (SATiM), Tehran University of Medical Sciences, PO Box 14177–55469, Tehran, Iran
| | - Lesley-Anne Turner
- Centre for Cell Engineering, Joseph Black Building, Institute of Biomedical & Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, UK
| | - Matthew J Dalby
- Centre for Cell Engineering, Joseph Black Building, Institute of Biomedical & Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, UK
| | - Sophie Laurent
- Department of General, Organic & Biomedical Chemistry, NMR & Molecular Imaging Laboratory, University of Mons, Avenue Maistriau 19, B-7000 Mons, Belgium
- CMMI – Center for Microscopy & Molecular Imaging, Rue Adrienne Bolland, 8, B-6041 Gosselies, Belgium
| | | | - Shahin Bonakdar
- National Cell Bank, Pasteur Institute of Iran, PO Box 13169–43551, Tehran, Iran
| | - Mohammad Imani
- Novel Drug Delivery Systems Department, Iran Polymer & Petrochemical Institute (IPPI), PO Box 14965/115, Tehran, Iran
| | - Morteza Mahmoudi
- Department of Nanotechnology & Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, PO Box 14155–6451, Tehran, Iran
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA 94305–5101, USA
- Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305–5101, USA
| |
Collapse
|
232
|
Lee TT, García JR, Paez J, Singh A, Phelps EA, Weis S, Shafiq Z, Shekaran A, del Campo A, García AJ. Light-triggered in vivo activation of adhesive peptides regulates cell adhesion, inflammation and vascularization of biomaterials. NATURE MATERIALS 2015; 14:352-60. [PMID: 25502097 PMCID: PMC4336636 DOI: 10.1038/nmat4157] [Citation(s) in RCA: 288] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Accepted: 10/31/2014] [Indexed: 05/03/2023]
Abstract
Materials engineered to elicit targeted cellular responses in regenerative medicine must display bioligands with precise spatial and temporal control. Although materials with temporally regulated presentation of bioadhesive ligands using external triggers, such as light and electric fields, have recently been realized for cells in culture, the impact of in vivo temporal ligand presentation on cell-material responses is unknown. Here, we present a general strategy to temporally and spatially control the in vivo presentation of bioligands using cell-adhesive peptides with a protecting group that can be easily removed via transdermal light exposure to render the peptide fully active. We demonstrate that non-invasive, transdermal time-regulated activation of cell-adhesive RGD peptide on implanted biomaterials regulates in vivo cell adhesion, inflammation, fibrous encapsulation, and vascularization of the material. This work shows that triggered in vivo presentation of bioligands can be harnessed to direct tissue reparative responses associated with implanted biomaterials.
Collapse
Affiliation(s)
- Ted T. Lee
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - José R. García
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - Julieta Paez
- Max-Planck-Institut für Polymerforschung, Mainz 55128, Germany
| | - Ankur Singh
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, USA
| | - Edward A. Phelps
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - Simone Weis
- Max-Planck-Institut für Polymerforschung, Mainz 55128, Germany
| | - Zahid Shafiq
- Max-Planck-Institut für Polymerforschung, Mainz 55128, Germany
| | - Asha Shekaran
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | | | - Andrés J. García
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- Correspondence and requests for materials should be addressed to A.J.G.
| |
Collapse
|
233
|
Nie C, Ma L, Cheng C, Deng J, Zhao C. Nanofibrous heparin and heparin-mimicking multilayers as highly effective endothelialization and antithrombogenic coatings. Biomacromolecules 2015; 16:992-1001. [PMID: 25668587 DOI: 10.1021/bm501882b] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Combining the advantages of the fibrous nanostructure of carbon nanotubes (CNTs) and the bioactivities of heparin/heparin-mimicking polyanions, functional nanofibrous heparin or heparin-mimicking multilayers were constructed on PVDF membrane with highly promoted endothelialization and antithrombogenic activities. Oxidized CNT (oCNT) was first functionalized with water-soluble chitosan (polycation), then enwrapped with heparin or a typical sulfonated heparin-mimicking polymers (poly(sodium 4-styrenesulfonate-co-sodium methacrylate)) to construct the multilayers. Then, the surface-deposited multilayers were constructed via electrostatic layer-by-layer assembly of the functionalized oCNTs. The scanning electron microscope and atom force microscope images confirmed that the coated multilayers exhibited nanofibrous and porous structure. The live/dead cell staining and cell viability assay results indicated that the coated nanofibrous multilayers had excellent compatibility with endothelial cells. The cell morphology observation further confirmed the promotion ability of surface endothelialization due to the coated heparin/heparin-mimicking multilayers. Further systematical evaluation on blood compatibility revealed that the surface heparin/heparin-mimicking multilayer-coated membranes also had significantly improved blood compatibility including restrained platelet adhesion and activation, prolonged blood clotting times, and inhibited activation of coagulation and complement factors. In summary, the proposed nanofibrous multilayers integrated endothelialization and antithrombogenic properties; meanwhile, the heparin-mimicking coating validated comparable performances as heparin coating. Herein, it is expected that the surface coating of nanofibrous multilayers, especially the facilely constructed heparin-mimicking coating, may have great application potential in biomedical fields.
Collapse
Affiliation(s)
- Chuanxiong Nie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | | | | | | | | |
Collapse
|
234
|
Tsang KM, Annabi N, Ercole F, Zhou K, Karst D, Li F, Haynes JM, Evans RA, Thissen H, Khademhosseini A, Forsythe JS. Facile One-step Micropatterning Using Photodegradable Methacrylated Gelatin Hydrogels for Improved Cardiomyocyte Organization and Alignment. ADVANCED FUNCTIONAL MATERIALS 2015; 25:977-986. [PMID: 26327819 PMCID: PMC4551408 DOI: 10.1002/adfm.201403124] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Hydrogels are often employed as temporary platforms for cell proliferation and tissue organization in vitro. Researchers have incorporated photodegradable moieties into synthetic polymeric hydrogels as a means of achieving spatiotemporal control over material properties. In this study protein-based photodegradable hydrogels composed of methacrylated gelatin (GelMA) and a crosslinker containing o-nitrobenzyl ester groups have been developed. The hydrogels are able to degrade rapidly and specifically in response to UV light and can be photopatterned to a variety of shapes and dimensions in a one-step process. Micropatterned photodegradable hydrogels are shown to improve cell distribution, alignment and beating regularity of cultured neonatal rat cardiomyocytes. Overall this work introduces a new class of photodegradable hydrogel based on natural and biofunctional polymers as cell culture substrates for improving cellular organization and function.
Collapse
Affiliation(s)
- Kelly M.C. Tsang
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia. CSIRO Manufacturing Flagship, Bayview Avenue, Clayton, VIC 3168, Australia. CRC for Polymers, 8 Redwood Drive, Notting Hill, VIC 3168, Australia
| | - Nasim Annabi
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 02139, MA, USA. Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, 02115, MA, USA
| | - Francesca Ercole
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia
| | - Kun Zhou
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia
| | - Daniel Karst
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 02139, MA, USA. Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA
| | - Fanyi Li
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia
| | - John M. Haynes
- Faculty of Pharmacy and Pharmaceutical Sciences; Drug Discovery Biology, Department of Pharmaceutical Biology, Monash University, Parkville, VIC 3052, Australia
| | - Richard A. Evans
- CSIRO Manufacturing Flagship, Bayview Avenue, Clayton, VIC 3168, Australia. CRC for Polymers, 8 Redwood Drive, Notting Hill, VIC 3168, Australia
| | - Helmut Thissen
- CSIRO Manufacturing Flagship, Bayview Avenue, Clayton, VIC 3168, Australia. CRC for Polymers, 8 Redwood Drive, Notting Hill, VIC 3168, Australia
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 02139, MA, USA. Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, 02115, MA, USA. Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul 130-701, Republic of Korea. Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia
| | - John S. Forsythe
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia
| |
Collapse
|
235
|
Hopkins AM, DeSimone E, Chwalek K, Kaplan DL. 3D in vitro modeling of the central nervous system. Prog Neurobiol 2015; 125:1-25. [PMID: 25461688 PMCID: PMC4324093 DOI: 10.1016/j.pneurobio.2014.11.003] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 10/12/2014] [Accepted: 11/15/2014] [Indexed: 12/15/2022]
Abstract
There are currently more than 600 diseases characterized as affecting the central nervous system (CNS) which inflict neural damage. Unfortunately, few of these conditions have effective treatments available. Although significant efforts have been put into developing new therapeutics, drugs which were promising in the developmental phase have high attrition rates in late stage clinical trials. These failures could be circumvented if current 2D in vitro and in vivo models were improved. 3D, tissue-engineered in vitro systems can address this need and enhance clinical translation through two approaches: (1) bottom-up, and (2) top-down (developmental/regenerative) strategies to reproduce the structure and function of human tissues. Critical challenges remain including biomaterials capable of matching the mechanical properties and extracellular matrix (ECM) composition of neural tissues, compartmentalized scaffolds that support heterogeneous tissue architectures reflective of brain organization and structure, and robust functional assays for in vitro tissue validation. The unique design parameters defined by the complex physiology of the CNS for construction and validation of 3D in vitro neural systems are reviewed here.
Collapse
Affiliation(s)
- Amy M Hopkins
- Department of Biomedical Engineering, Tufts University, Science & Technology Center, 4 Colby Street, Medford, MA 02155, USA
| | - Elise DeSimone
- Department of Biomedical Engineering, Tufts University, Science & Technology Center, 4 Colby Street, Medford, MA 02155, USA
| | - Karolina Chwalek
- Department of Biomedical Engineering, Tufts University, Science & Technology Center, 4 Colby Street, Medford, MA 02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Science & Technology Center, 4 Colby Street, Medford, MA 02155, USA.
| |
Collapse
|
236
|
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.
Collapse
Affiliation(s)
- Hang Kuen Lau
- Department of Materials Science and Engineering and ‡Biomedical Engineering, University of Delaware , Newark Delaware 19716, United States
| | | |
Collapse
|
237
|
Hashimoto Y, Mukai SA, Sawada SI, Sasaki Y, Akiyoshi K. Nanogel tectonic porous gel loading biologics, nanocarriers, and cells for advanced scaffold. Biomaterials 2015; 37:107-15. [DOI: 10.1016/j.biomaterials.2014.10.045] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Accepted: 10/02/2014] [Indexed: 11/27/2022]
|
238
|
Murphy NP, Lampe KJ. Mimicking biological phenomena in hydrogel-based biomaterials to promote dynamic cellular responses. J Mater Chem B 2015; 3:7867-7880. [DOI: 10.1039/c5tb01045d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Novel methods to endow cell-responsiveness into hydrogels are explored and successful work is summarized.
Collapse
Affiliation(s)
- Nicholas P. Murphy
- Department of Chemical Engineering
- University of Virginia
- Charlottesville
- USA
| | - Kyle J. Lampe
- Department of Chemical Engineering
- University of Virginia
- Charlottesville
- USA
| |
Collapse
|
239
|
Tharp KM, Stahl A. Bioengineering Beige Adipose Tissue Therapeutics. Front Endocrinol (Lausanne) 2015; 6:164. [PMID: 26539163 PMCID: PMC4611961 DOI: 10.3389/fendo.2015.00164] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 10/05/2015] [Indexed: 02/06/2023] Open
Abstract
Unlocking the therapeutic potential of brown/beige adipose tissue requires technological advancements that enable the controlled expansion of this uniquely thermogenic tissue. Transplantation of brown fat in small animal model systems has confirmed the expectation that brown fat expansion could possibly provide a novel therapeutic to combat obesity and related disorders. Expansion and/or stimulation of uncoupling protein-1 (UCP1)-positive adipose tissues have repeatedly demonstrated physiologically beneficial reductions in circulating glucose and lipids. The recent discovery that brown adipose tissue (BAT)-derived secreted factors positively alter whole body metabolism further expands potential benefits of brown or beige/brite adipose expansion. Unfortunately, there are no sources of transplantable BATs for human therapeutic purposes at this time. Recent developments in bioengineering, including novel hyaluronic acid-based hydrogels, have enabled non-immunogenic, functional tissue allografts that can be used to generate large quantities of UCP1-positive adipose tissue. These sophisticated tissue-engineering systems have provided the methodology to develop metabolically active brown or beige/brite adipose tissue implants with the potential to be used as a metabolic therapy. Unlike the pharmacological browning of white adipose depots, implantation of bioengineered UCP1-positive adipose tissues offers a spatially controlled therapeutic. Moving forward, new insights into the mechanisms by which extracellular cues govern stem-cell differentiation and progenitor cell recruitment may enable cell-free matrix implant approaches, which generate a niche sufficient to recruit white adipose tissue-derived stem cells and support their differentiation into functional beige/brite adipose tissues. This review summarizes clinically relevant discoveries in tissue-engineering and biology leading toward the recent development of biomaterial supported beige adipose tissue implants and their potential for the metabolic therapies.
Collapse
Affiliation(s)
- Kevin M. Tharp
- Program in Metabolic Biology, Department of Nutritional Science and Toxicology, University of California Berkeley, Berkeley, CA, USA
- Department of Bioengineering, University of California Berkeley, Berkeley, CA, USA
| | - Andreas Stahl
- Program in Metabolic Biology, Department of Nutritional Science and Toxicology, University of California Berkeley, Berkeley, CA, USA
- *Correspondence: Andreas Stahl,
| |
Collapse
|
240
|
Wang L, Su B, Cheng C, Ma L, Li S, Nie S, Zhao C. Layer by layer assembly of sulfonic poly(ether sulfone) as heparin-mimicking coatings: scalable fabrication of super-hemocompatible and antibacterial membranes. J Mater Chem B 2015; 3:1391-1404. [PMID: 32264490 DOI: 10.1039/c4tb01865f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this study, super-hemocompatible and antibacterial polymeric membranes with surface coated nanofilms were fabricated by LBL assembly of water-soluble heparin-mimicking polymer and quaternized chitosan.
Collapse
Affiliation(s)
- Lingren Wang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Baihai Su
- Department of Nephrology
- West China Hospital
- Sichuan University
- Chengdu 610041
- People's Republic of China
| | - Chong Cheng
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lang Ma
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Shuangsi Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Shengqiang Nie
- College of Chemistry and Materials Engineering
- Guiyang University
- Guiyang 550005
- China
| | - Changsheng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| |
Collapse
|
241
|
Khan F, Tanaka M, Ahmad SR. Fabrication of polymeric biomaterials: a strategy for tissue engineering and medical devices. J Mater Chem B 2015; 3:8224-8249. [DOI: 10.1039/c5tb01370d] [Citation(s) in RCA: 153] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Fabrication of biomaterials scaffolds using various methods and techniques is discussed, utilising biocompatible, biodegradable and stimuli-responsive polymers and their composites. This review covers the lithography and printing techniques, self-organisation and self-assembly methods for 3D structural scaffolds generation, and smart hydrogels, for tissue regeneration and medical devices.
Collapse
Affiliation(s)
- Ferdous Khan
- Senior Polymer Chemist
- ECOSE-Biopolymer
- Knauf Insulation Limited
- St. Helens
- UK
| | - Masaru Tanaka
- Biomaterials Science Group
- Department of Biochemical Engineering
- Graduate School of Science and Engineering
- Yamagata University
- Yonezawa
| | - Sheikh Rafi Ahmad
- Centre for Applied Laser Spectroscopy
- CDS
- DEAS
- Cranfield University
- Swindon
| |
Collapse
|
242
|
Ruggeri FS, Byrne C, Khemtemourian L, Ducouret G, Dietler G, Jacquot Y. Concentration-dependent and surface-assisted self-assembly properties of a bioactive estrogen receptor α-derived peptide. J Pept Sci 2014; 21:95-104. [PMID: 25530026 DOI: 10.1002/psc.2730] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/25/2014] [Accepted: 11/28/2014] [Indexed: 11/10/2022]
Abstract
We have synthesized a 17-mer peptide (ERα17p) that is issued from the hinge region of the estrogen receptor α and which activates the proliferation of breast carcinoma cells in steroid-deprived conditions. In the present paper, we show that at a concentration of ~50 μM, it rapidly forms amyloid-like fibrils with the assistance of electrostatic interactions and that at higher concentrations, it spontaneously forms a hydrogel. By using biophysical, spectral and rheological techniques, we have explored the structural, biophysical and mechanical characteristics of ERα17p with respect to fibril formation and gelation.
Collapse
Affiliation(s)
- Francesco Simone Ruggeri
- Laboratoire de Physique de la Matière Vivante, Institut de Physique des Systèmes Biologiques, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | | | | | | | | | | |
Collapse
|
243
|
Liu X, Deng J, Ma L, Cheng C, Nie C, He C, Zhao C. Catechol chemistry inspired approach to construct self-cross-linked polymer nanolayers as versatile biointerfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14905-14915. [PMID: 25420156 DOI: 10.1021/la503872h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, we proposed a catechol chemistry inspired approach to construct surface self-cross-linked polymer nanolayers for the design of versatile biointerfaces. Several representative biofunctional polymers, P(SS-co-AA), P(SBMA-co-AA), P(EGMA-co-AA), P(VP-co-AA), and P(MTAC-co-AA), were first synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization, and then the catecholic molecules (dopamine, DA) were conjugated to the acrylic acid (AA) units by the facile carbodiimide chemistry. Then, the catechol (Cat) group conjugated biofunctional polymers, named PSS-Cat, PSBMA-Cat, PEGMA-Cat, PVP-Cat, and PMTAC-Cat, were applied for the construction of self-cross-linked nanolayers on polymeric substrates via the pH induced catechol cross-linking and immobilization. The XPS spectra, surface morphology, and wettability gave robust evidence that the catechol conjugated polymers were successfully coated, and the coated substrates possessed increased surface roughness and hydrophilicity. Furthermore, the systematic in vitro investigation of protein adsorption, platelet adhesion, activated partial thromboplastin time (APTT), thrombin time (TT), cell viability, and antibacterial ability confirmed that the coated nanolayers conferred the substrates with versatile biological performances. The PSS-Cat coated substrate had low blood component activation and excellent anticoagulant activity; while the PEGMA-Cat and PSBMA-Cat showed ideal resistance to protein fouling and inhibition of platelet activation. The PSS-Cat and PVP-Cat coated substrates exhibited promoted endothelial cell proliferation and viability. The PMTAC-Cat coated substrate showed an outstanding activity on bacterial inhibition. In conclusion, the catechol chemistry inspired approach allows the self-cross-linked nanolayers to be easily immobilized on polymeric substrates with the stable conformation and multiple biofunctionalities. It is expected that this low-cost and facile bioinspired coating system will present great potential in creating novel and versatile biointerfaces.
Collapse
Affiliation(s)
- Xinyue Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | | | | | | | | | | | | |
Collapse
|
244
|
Qi P, Yan W, Yang Y, Li Y, Fan Y, Chen J, Yang Z, Tu Q, Huang N. Immobilization of DNA aptamers via plasma polymerized allylamine film to construct an endothelial progenitor cell-capture surface. Colloids Surf B Biointerfaces 2014; 126:70-9. [PMID: 25575347 DOI: 10.1016/j.colsurfb.2014.12.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 11/25/2014] [Accepted: 12/01/2014] [Indexed: 02/06/2023]
Abstract
The endothelial progenitor cells (EPCs) capture stent has drawn increasing attentions and become one of the most promising concepts for the next generation vascular stent. In this regard, it is of great significance to immobilize a molecule with the ability to bind EPC for rapid in vivo endothelialization with high specificity. In this work, a facile two-step method aimed at constructing a coating with specific EPC capturing aptamers is reported. The processes involves as the first-step deposition of plasma polymerized allylamine (PPAam) on a substrate to introduce amine groups, followed by the electrostatic adsorption of a 34 bases single strand DNA sequence to the PPAam surface as a second step (PPAam-DNA). Grazing incidence attenuated total reflection Fourier transform infrared spectroscopy (GATR-FTIR) and X-ray photoelectron spectroscopy (XPS) confirmed the successful immobilization of the aptamers. Quartz crystal microbalance with dissipation (QCM-D) real time monitoring result shows that about 175 ng/cm(2) aptamers were conjugated onto the PPAam surface. The interactions between the modified surfaces and human umbilical vein endothelial cells (ECs), smooth muscle cells (SMCs), and murine induced EPCs derived from mesenchymal stem cells (MSCs) were also investigated. It was demonstrated that PPAam-DNA samples could capture more EPCs, and present a cellular friendly surface for the proliferation of both EPCs and ECs but no effect on the hyperplasia of SMCs. Also, the co-culture results of 3 types of cells confirmed that the aptamer could specifically bond EPCs rather than ECs and SMCs, suggesting the competitive adhesion advantage of EPCs to ECs and SMCs. These data demonstrate that the EPC aptamer has large potential for designing an EPC captured stent and other vascular grafts with targeted in situ endothelialization.
Collapse
Affiliation(s)
- Pengkai Qi
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Wei Yan
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Ying Yang
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yalong Li
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Yi Fan
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Junying Chen
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhilu Yang
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Qiufen Tu
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China.
| | - Nan Huang
- Key Lab of Advanced Technology of Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| |
Collapse
|
245
|
Singh NK, Lee DS. In situ gelling pH- and temperature-sensitive biodegradable block copolymer hydrogels for drug delivery. J Control Release 2014; 193:214-27. [DOI: 10.1016/j.jconrel.2014.04.056] [Citation(s) in RCA: 200] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/28/2014] [Accepted: 04/29/2014] [Indexed: 12/22/2022]
|
246
|
Lowe SB, Tan VTG, Soeriyadi AH, Davis TP, Gooding JJ. Synthesis and High-Throughput Processing of Polymeric Hydrogels for 3D Cell Culture. Bioconjug Chem 2014; 25:1581-601. [DOI: 10.1021/bc500310v] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | | | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Parkville, VIC 3052, Australia
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Monash Institute
of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - J. Justin Gooding
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Parkville, VIC 3052, Australia
| |
Collapse
|
247
|
Grigore A, Sarker B, Fabry B, Boccaccini AR, Detsch R. Behavior of Encapsulated MG-63 Cells in RGD and Gelatine-Modified Alginate Hydrogels. Tissue Eng Part A 2014; 20:2140-50. [DOI: 10.1089/ten.tea.2013.0416] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Alexandra Grigore
- Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
- Biophysics Group, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Bapi Sarker
- Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Ben Fabry
- Biophysics Group, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Rainer Detsch
- Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
| |
Collapse
|
248
|
Ignjatović N, Vranješ Djurić S, Mitić Z, Janković D, Uskoković D. Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive ¹²⁵Iodine labeling. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 43:439-46. [PMID: 25175234 DOI: 10.1016/j.msec.2014.07.046] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 06/07/2014] [Accepted: 07/13/2014] [Indexed: 01/08/2023]
Abstract
In this study, we have investigated the synthesis of nanoparticles of hydroxyapatite (HAp) and hydroxyapatite coated with chitosan (HAp/Ch) and the chitosan-poly-d,l-lactide-co-glycolide polymer blend (HAp/Ch-PLGA) as an organ-targeting system. We have examined and defined the final destination, as well as the dynamics and the pathways of the synthesized particles following intravenous administration in vivo. The XRD, ZP, FT-IR and SEM analyses have confirmed that the hydroxyapatite nanoparticles with d50=72 nm are coated with polymers. Radioactive 125-Iodine ((125)I), a low energy gamma emitter, was used to develop a novel in situ method for the radiolabeling of particles and investigation of their biodistribution. (125)I-labeled particles exhibited high stability in saline and serum over the second day, which justified their use in the following in vivo studies. The biodistribution of (125)I-labeled particles after intravenous injection in rats differed significantly: HAp particles mostly targeted the liver, HAp/Ch the spleen and the liver, while HAp/Ch-PLGA targeted the lungs. Twenty-four hours post injection, HAp particles were excreted completely, while both (125)I-HAp/Ch and (125)I-HAp/Ch-PLGA were retained in the body for a prolonged period of time with more than 20% of radioactivity still found in different organs.
Collapse
Affiliation(s)
- Nenad Ignjatović
- Centre for Fine Particles Processing and Nanotechnologies, Institute of Technical Sciences of the Serbian Academy of Science and Arts, Knez Mihailova 35/4, 11000 Belgrade, Serbia
| | - Sanja Vranješ Djurić
- Laboratory for Radioisotopes, Vinča Institute of Nuclear Sciences, University of Belgrade, PO Box 522, 11001 Belgrade, Serbia
| | - Zarko Mitić
- Faculty of Medicine, Department of Pharmacy, University of Niš, Bulevar dr Zorana Đinđića 81, 18000 Niš, Serbia
| | - Drina Janković
- Laboratory for Radioisotopes, Vinča Institute of Nuclear Sciences, University of Belgrade, PO Box 522, 11001 Belgrade, Serbia
| | - Dragan Uskoković
- Centre for Fine Particles Processing and Nanotechnologies, Institute of Technical Sciences of the Serbian Academy of Science and Arts, Knez Mihailova 35/4, 11000 Belgrade, Serbia.
| |
Collapse
|
249
|
Ultrashort peptide nanofibrous hydrogels for the acceleration of healing of burn wounds. Biomaterials 2014; 35:4805-14. [DOI: 10.1016/j.biomaterials.2014.02.047] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 02/23/2014] [Indexed: 12/31/2022]
|
250
|
Li B, Qiu T, Zhang P, Wang X, Yin Y, Li S. IKVAV regulates ERK1/2 and Akt signalling pathways in BMMSC population growth and proliferation. Cell Prolif 2014; 47:133-45. [PMID: 24617901 PMCID: PMC4232901 DOI: 10.1111/cpr.12094] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 11/08/2013] [Indexed: 12/26/2022] Open
Abstract
Objectives The molecular mechanism of bone marrow mesenchymal stem cell (BMMSC) population growth and proliferation, induced by Isoleucyl‐lysyl‐valyl‐alanyl‐valine (IKVAV), was explored in this study. Materials and methods IKVAV peptides were synthesized by the solid‐phase method. Influence of IKVAV on BMMSC population growth and proliferation were investigated by assays of CCK‐8, flow cytometry, real‐time PCR and western blotting. Results IKVAV peptide was found to induce proliferation and proliferating cell nuclear antigen (PCNA) synthesis of BMMSC in a dose‐ and time‐dependent manner. Cell cycle analysis showed that the proportion of IKVAV‐treated BMMSC in S phase in was higher than controls. Western blot results suggested that mitogen‐activated protein kinase/extracellular signal‐regulated kinase (MAPK/ERK) and phosphatidylinositol 3‐kinase/protein kinase B (PI3K/Akt) signalling pathways were activated by IKVAV by enhancing phosphorylation levels of ERK1/2 and Akt in the BMMSCs. Meanwhile, phosphorylation levels of ERK1/2 and Akt were partially blocked by ERK1/2 inhibitor (PD98059) and Akt inhibitor (wortmannin), respectively. Conclusions Our results demonstrated that IKVAV stimulated BMMSC population growth and proliferation by activating MAPK/ERK1/2 and PI3K/Akt signalling pathways. This study is the first to reveal an enhancement effect of IKVAV peptide on BMMSC at the signal transduction level, and the outcome could provide experimental evidence for application of IKVAV‐grafted scaffolds in the field of BMMSC‐based tissue engineering.
Collapse
Affiliation(s)
- B Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and Biomaterials Science and Engineering Research Center, Wuhan University of Technology, Wuhan, 430070, China
| | | | | | | | | | | |
Collapse
|