151
|
Rath SN, Brandl A, Hiller D, Hoppe A, Gbureck U, Horch RE, Boccaccini AR, Kneser U. Bioactive copper-doped glass scaffolds can stimulate endothelial cells in co-culture in combination with mesenchymal stem cells. PLoS One 2014; 9:e113319. [PMID: 25470000 PMCID: PMC4254617 DOI: 10.1371/journal.pone.0113319] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Accepted: 10/27/2014] [Indexed: 01/01/2023] Open
Abstract
Bioactive glass (BG) scaffolds are being investigated for bone tissue engineering applications because of their osteoconductive and angiogenic nature. However, to increase the in vivo performance of the scaffold, including enhancing the angiogenetic growth into the scaffolds, some researchers use different modifications of the scaffold including addition of inorganic ionic components to the basic BG composition. In this study, we investigated the in vitro biocompatibility and bioactivity of Cu2+-doped BG derived scaffolds in either BMSC (bone-marrow derived mesenchymal stem cells)-only culture or co-culture of BMSC and human dermal microvascular endothelial cells (HDMEC). In BMSC-only culture, cells were seeded either directly on the scaffolds (3D or direct culture) or were exposed to ionic dissolution products of the BG scaffolds, kept in permeable cell culture inserts (2D or indirect culture). Though we did not observe any direct osteoinduction of BMSCs by alkaline phosphatase (ALP) assay or by PCR, there was increased vascular endothelial growth factor (VEGF) expression, observed by PCR and ELISA assays. Additionally, the scaffolds showed no toxicity to BMSCs and there were healthy live cells found throughout the scaffold. To analyze further the reasons behind the increased VEGF expression and to exploit the benefits of the finding, we used the indirect method with HDMECs in culture plastic and Cu2+-doped BG scaffolds with or without BMSCs in cell culture inserts. There was clear observation of increased endothelial markers by both FACS analysis and acetylated LDL (acLDL) uptake assay. Only in presence of Cu2+-doped BG scaffolds with BMSCs, a high VEGF secretion was demonstrated by ELISA; and typical tubular structures were observed in culture plastics. We conclude that Cu2+-doped BG scaffolds release Cu2+, which in turn act on BMSCs to secrete VEGF. This result is of significance for the application of BG scaffolds in bone tissue engineering approaches.
Collapse
Affiliation(s)
- Subha N. Rath
- Department of Plastic and Hand Surgery, University of Erlangen-Nürnberg, Erlangen, Germany
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Yeddumailaram, Telangana, India
| | - Andreas Brandl
- Department of Plastic and Hand Surgery, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Daniel Hiller
- Department of Plastic and Hand Surgery, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Alexander Hoppe
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen- Nürnberg, Erlangen, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, Universtiy of Würzburg, Würzburg, Germany
| | - Raymund E. Horch
- Department of Plastic and Hand Surgery, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen- Nürnberg, Erlangen, Germany
| | - Ulrich Kneser
- Department of Plastic and Hand Surgery, University of Erlangen-Nürnberg, Erlangen, Germany
- Department of Hand, Plastic and Reconstructive Surgery - Burn Center, University of Heidelberg, Ludwigshafen, Germany
| |
Collapse
|
152
|
Corchero JL, Vázquez E, García-Fruitós E, Ferrer-Miralles N, Villaverde A. Recombinant protein materials for bioengineering and nanomedicine. Nanomedicine (Lond) 2014; 9:2817-28. [DOI: 10.2217/nnm.14.153] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Proteins are essential macromolecules supporting life. Being efficient catalyzers and offering specific cross-molecular contacts, proteins are largely exploited in biotechnology and biomedicine as therapeutics, in industrial catalysis or as molecular reagents. Recombinant enzymes, hormones, immunogens and antibodies are produced aiming to different applications, on the basis of their ability to interact with or modify substrates or biological targets. In nature, proteins also perform task-specific architectonic roles, and they can organize in supramolecular complexes with intriguing physical properties such as elasticity and adhesiveness, and with regulatable stiffness, flexibility and mechanical strength. Proteins have recently gained interest as materials for bioengineering and nanomedicine as they can combine these features with functionality, biocompatibility and degradability in unusually versatile composites. We revise here the fundamental properties of the diverse categories of emerging protein materials resulting from biological synthesis and how they can be genetically re-designed to engineer the interplay between mechanical and biological properties in a medically oriented exploitable way.
Collapse
Affiliation(s)
- José Luis Corchero
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona, Spain
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
- Department de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Esther Vázquez
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona, Spain
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
- Department de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Elena García-Fruitós
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona, Spain
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
- Department de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Neus Ferrer-Miralles
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona, Spain
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
- Department de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Antonio Villaverde
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona, Spain
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
- Department de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| |
Collapse
|
153
|
Patil S, Paul S. A comprehensive review on the role of various materials in the osteogenic differentiation of mesenchymal stem cells with a special focus on the association of heat shock proteins and nanoparticles. Cells Tissues Organs 2014; 199:81-102. [PMID: 25401759 DOI: 10.1159/000362226] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2014] [Indexed: 11/19/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have important roles in the area of regenerative medicine and clinical applications due to their pluripotent nature. Osteogenic differentiation of MSCs has been studied extensively using various stimulants to develop models of bone repair. There are several factors that enhance the differentiation of MSCs into bone tissues. This review focuses on the effects of various inducers on the osteoblast differentiation of MSCs at different stages of cellular development. We discuss the various growth factors, hormones, vitamins, cytokines, chemical stimulants, and mechanical forces applied in bioreactors that play an essential role in the proliferation, differentiation, and matrix mineralization of stem cells during osteogenesis. Various nanoparticles have also been used recently for the same purpose and the results are promising. Moreover, we review the role of various stresses, including thermal stress, and the subsequent involvement of heat shock proteins as inducers of the proliferation and differentiation of osteoblasts. We also report how various proteasome inhibitors have been shown to induce proliferation and osteogenic differentiation of MSCs in a number of cases. In this communication, the role of peptide-based scaffolds in osteoblast proliferation and differentiation is also reviewed. Based on the reviewed information, this article proposes novel possibilities for the enhancement of proliferation, differentiation, and migration of osteoblasts from MSCs. © 2014 S. Karger AG, Basel.
Collapse
Affiliation(s)
- Supriya Patil
- Structural Biology and Nanomedicine Laboratory, Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, India
| | | |
Collapse
|
154
|
Designer self-assembling hydrogel scaffolds can impact skin cell proliferation and migration. Sci Rep 2014; 4:6903. [PMID: 25384420 PMCID: PMC4227029 DOI: 10.1038/srep06903] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 10/09/2014] [Indexed: 02/02/2023] Open
Abstract
There is a need to develop economical, efficient and widely available therapeutic approaches to enhance the rate of skin wound healing. The optimal outcome of wound healing is restoration to the pre-wound quality of health. In this study we investigate the cellular response to biological stimuli using functionalized nanofibers from the self-assembling peptide, RADA16. We demonstrate that adding different functional motifs to the RADA16 base peptide can influence the rate of proliferation and migration of keratinocytes and dermal fibroblasts. Relative to unmodified RADA16; the Collagen I motif significantly promotes cell migration, and reduces proliferation.
Collapse
|
155
|
Tang W, Policastro GM, Hua G, Guo K, Zhou J, Wesdemiotis C, Doll GL, Becker ML. Bioactive surface modification of metal oxides via catechol-bearing modular peptides: multivalent-binding, surface retention, and peptide bioactivity. J Am Chem Soc 2014; 136:16357-67. [PMID: 25343707 DOI: 10.1021/ja508946h] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A series of multivalent dendrons containing a bioactive osteogenic growth peptide (OGP) domain and surface-binding catechol domains were obtained through solid phase synthesis, and their binding affinity to hydroxyapatite, TiO2, ZrO2, CeO2, Fe3O4 and gold was characterized using a quartz crystal microbalance with dissipation (QCM-d). Using the distinct difference in binding affinity of the bioconjugate to the metal oxides, TiO2-coated glass slides were selectively patterned with bioactive peptides. Cell culture studies demonstrated the bioavailability of the OGP and that OGP remained on the surface for at least 2 weeks under in vitro cell culture conditions. Bone sialoprotein (BSP) and osteocalcein (OCN) markers were upregulated 3-fold and 60-fold, respectively, relative to controls at 21 days. Similarly, 3-fold more calcium was deposited using the OGP tethered dendron compared to TiO2. These catechol-bearing dendrons provide a fast and efficient method to functionalize a wide range of inorganic materials with bioactive peptides and have the potential to be used in coating orthopaedic implants and fixation devices.
Collapse
Affiliation(s)
- Wen Tang
- Department of Polymer Science, The University of Akron , Akron, Ohio 44325, United States
| | | | | | | | | | | | | | | |
Collapse
|
156
|
Yuan D, Du X, Shi J, Zhou N, Baoum AA, Xu B. Synthesis of novel conjugates of a saccharide, amino acids, nucleobase and the evaluation of their cell compatibility. Beilstein J Org Chem 2014; 10:2406-13. [PMID: 25383110 PMCID: PMC4222440 DOI: 10.3762/bjoc.10.250] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 10/01/2014] [Indexed: 12/18/2022] Open
Abstract
This article reports the synthesis of a novel type of conjugate of three fundamental biological build blocks (i.e., saccharide, amino acids, and nucleobase) and their cell compatibility. The facile synthesis starts with the synthesis of nucleobase and saccharide derivatives, then uses solid-phase peptide synthesis (SPPS) to build the peptide segment (Phe-Arg-Gly-Asp or naphthAla-Phe-Arg-Gly-Asp with fully protected groups), and later, an amidation reaction in liquid phase connects these three parts together. The overall yield of these multiple step synthesis is about 34%. Besides exhibiting excellent solubility, these conjugates of saccharide-amino acids-nucleobase (SAN), like the previously reported conjugates of nucleobase-amino acids-saccharide (NAS) and nucleobase-saccharide-amino acids (NSA), are mammalian cell compatible.
Collapse
Affiliation(s)
- Dan Yuan
- Department of Chemistry, Brandeis University, 415 South Street, MS015, Waltham, MA 02453, USA
| | - Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, MS015, Waltham, MA 02453, USA
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, 415 South Street, MS015, Waltham, MA 02453, USA
| | - Ning Zhou
- Department of Chemistry, Brandeis University, 415 South Street, MS015, Waltham, MA 02453, USA
| | | | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, MS015, Waltham, MA 02453, USA
| |
Collapse
|
157
|
He C, Nie W, Feng W. Engineering of biomimetic nanofibrous matrices for drug delivery and tissue engineering. J Mater Chem B 2014; 2:7828-7848. [PMID: 32262073 DOI: 10.1039/c4tb01464b] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Biomimetic nanofibers have emerged as promising candidates for drug delivery and tissue engineering applications. In this paper, recent advances on the fabrication and application of biomimetic nanofibers as drug carriers and scaffolding materials are reviewed. First, we delineate the three popular nanofiber fabrication techniques including electrospinning, phase separation and molecular self-assembly, covering the principal materials used for different techniques and surface functionalization strategies for nanofibers. Furthermore, we focus our interest on the nanofiber-based delivery strategies and underlying kinetics for growth factors and other bioactive molecules, following which we summarize the recent advances in the development of these nanofibrous matrices for bone, vascular and neural tissue engineering applications. Finally, research challenges and future trends in the related areas are discussed.
Collapse
Affiliation(s)
- Chuanglong He
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.
| | | | | |
Collapse
|
158
|
Hydrogel depots for local co-delivery of osteoinductive peptides and mesenchymal stem cells. J Control Release 2014; 189:158-68. [DOI: 10.1016/j.jconrel.2014.06.030] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 06/04/2014] [Accepted: 06/19/2014] [Indexed: 01/17/2023]
|
159
|
Mehrban N, Abelardo E, Wasmuth A, Hudson KL, Mullen LM, Thomson AR, Birchall MA, Woolfson DN. Assessing cellular response to functionalized α-helical peptide hydrogels. Adv Healthc Mater 2014; 3:1387-91. [PMID: 24659615 PMCID: PMC4276410 DOI: 10.1002/adhm.201400065] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Indexed: 01/18/2023]
Abstract
α-Helical peptide hydrogels are decorated with a cell-binding peptide motif (RGDS), which is shown to promote adhesion, proliferation, and differentiation of PC12 cells. Gel structure and integrity are maintained after functionalization. This opens possibilities for the bottom-up design and engineering of complex functional scaffolds for 2D and 3D cell cultures.
Collapse
Affiliation(s)
- Nazia Mehrban
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | | | | | | | | | | | | | | |
Collapse
|
160
|
Chen C, Gu Y, Deng L, Han S, Sun X, Chen Y, Lu JR, Xu H. Tuning gelation kinetics and mechanical rigidity of β-hairpin peptide hydrogels via hydrophobic amino acid substitutions. ACS APPLIED MATERIALS & INTERFACES 2014; 6:14360-14368. [PMID: 25087842 DOI: 10.1021/am5036303] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Self-assembling peptide hydrogels with faster gelation kinetics and higher mechanical rigidity are favorable for their practical applications. A design strategy to control the folding, self-assembly, and hydrogelation of β-hairpin peptides via hydrophobic amino acid substitutions has been explored in this study. Isoleucine has higher hydrophobicity and stronger propensity for β-sheet hydrogen bonding than valine. After the valine residues of MAX1 (VKVKVKVKV(D)PPTKVKVKVKV-NH2) were replaced with isoleucines, oscillatory rheometry and circular dichroism (CD) spectroscopy characterizations indicated that the variants had clearly faster self-assembly and hydrogelation rates and that the resulting gels displayed higher mechanical stiffness. Transmission electron microscopy (TEM) indicated the parent MAX1 and its variants all formed networks of long and entangled fibrils with the similar diameters of ∼3 nm, suggesting little effect of hydrophobic substitutions on the self-assembled morphology. The MAX1I8 (IKIKIKIKV(D)PPTKIKIKIKI-NH2) hydrogel showed the fastest gelation rate (within 5 min) and the highest gel rigidity with the series, supporting the homogeneous cell distribution within its 3D scaffold. In addition, the MAX1I8 hydrogel showed quick shear-thinning and rapid recovery upon cessation of shear strain, and the MTT and immunological assays indicated its low cytotoxicity and good biocompatibility. These features are highly attractive for its widespread use in 3D cell culturing and regenerative medical treatments.
Collapse
Affiliation(s)
- Cuixia Chen
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China) , 66 Changjiang West Road, Qingdao, Shandong 266580, China
| | | | | | | | | | | | | | | |
Collapse
|
161
|
Liu L, Liu X, Deng H, Wu Z, Zhang J, Cen B, Xu Q, Ji A. Something between the amazing functions and various morphologies of self-assembling peptides materials in the medical field. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:1331-45. [DOI: 10.1080/09205063.2014.943536] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
162
|
Hudalla GA, Sun T, Gasiorowski JZ, Han H, Tian YF, Chong AS, Collier JH. Gradated assembly of multiple proteins into supramolecular nanomaterials. NATURE MATERIALS 2014; 13:829-36. [PMID: 24930032 PMCID: PMC4180598 DOI: 10.1038/nmat3998] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 04/29/2014] [Indexed: 04/14/2023]
Abstract
Biomaterials exhibiting precise ratios of different bioactive protein components are critical for applications ranging from vaccines to regenerative medicine, but their design is often hindered by limited choices and cross-reactivity of protein conjugation chemistries. Here, we describe a strategy for inducing multiple different expressed proteins of choice to assemble into nanofibres and gels with exceptional compositional control. The strategy employs 'βTail' tags, which allow for good protein expression in bacteriological cultures, yet can be induced to co-assemble into nanomaterials when mixed with additional β-sheet fibrillizing peptides. Multiple different βTail fusion proteins could be inserted into peptide nanofibres alone or in combination at predictable, smoothly gradated concentrations, providing a simple yet versatile route to install precise combinations of proteins into nanomaterials. The technology is illustrated by achieving precisely targeted hues using mixtures of fluorescent proteins, by creating nanofibres bearing enzymatic activity, and by adjusting antigenic dominance in vaccines.
Collapse
Affiliation(s)
| | - Tao Sun
- Department of Surgery, University of Chicago
| | | | - Huifang Han
- Department of Surgery, University of Chicago
| | - Ye F. Tian
- Department of Surgery, University of Chicago
- Illinois Institute of Technology, Department of Biomedical Engineering
| | - Anita. S. Chong
- Department of Surgery, University of Chicago
- Committee on Immunology, University of Chicago
| | - Joel H. Collier
- Department of Surgery, University of Chicago
- Committee on Molecular Medicine, University of Chicago
- Committee on Immunology, University of Chicago
- Author to whom correspondence and requests for materials should be addressed: Joel H. Collier Associate Professor Department of Surgery, Committee on Immunology, Committee on Molecular Medicine University of Chicago 5841 S. Maryland Ave ML 5032 Chicago, IL 60637 Tel: 773-834-4161 Fax: 773-834-4546
| |
Collapse
|
163
|
Nanobiotechnology and bone regeneration: a mini-review. INTERNATIONAL ORTHOPAEDICS 2014; 38:1877-84. [PMID: 24962293 DOI: 10.1007/s00264-014-2412-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 06/03/2014] [Indexed: 12/27/2022]
Abstract
The purpose of this paper is to review current developments in bone tissue engineering, with special focus on the promising role of nanobiotechnology. This unique fusion between nanotechnology and biotechnology offers unprecedented possibilities in studying and modulating biological processes on a molecular and atomic scale. First we discuss the multiscale hierarchical structure of bone and its implication on the design of new scaffolds and delivery systems. Then we briefly present different types of nanostructured scaffolds, and finally we conclude with nanoparticle delivery systems and their potential use in promoting bone regeneration. This review is not meant to be exhaustive and comprehensive, but aims to highlight concepts and key advances in the field of nanobiotechnology and bone regeneration.
Collapse
|
164
|
Wen Y, Roudebush SL, Buckholtz GA, Goehring TR, Giannoukakis N, Gawalt ES, Meng WS. Coassembly of amphiphilic peptide EAK16-II with histidinylated analogues and implications for functionalization of β-sheet fibrils in vivo. Biomaterials 2014; 35:5196-205. [DOI: 10.1016/j.biomaterials.2014.03.009] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 03/03/2014] [Indexed: 02/02/2023]
|
165
|
Tao H, Zhang Y, Wang CF, Zhang C, Wang XM, Wang DL, Bai XD, Wen TY, Xin HK, Wu JH, Liu Y, He Q, Ruan D. Biological Evaluation of Human Degenerated Nucleus Pulposus Cells in Functionalized Self-Assembling Peptide Nanofiber Hydrogel Scaffold. Tissue Eng Part A 2014; 20:1621-31. [PMID: 24450796 DOI: 10.1089/ten.tea.2013.0279] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Affiliation(s)
- Hui Tao
- The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Yan Zhang
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Chao-feng Wang
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Chao Zhang
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Xiu-mei Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, People's Republic of China
| | - De-li Wang
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Xue-dong Bai
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Tian-yong Wen
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Hong-kui Xin
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Jian-hong Wu
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Yue Liu
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Qin He
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| | - Dike Ruan
- Department of Orthopaedic Surgery, Navy General Hospital, Beijing, People's Republic of China
| |
Collapse
|
166
|
Kim JE, Lee SM, Kim SH, Tatman P, Gee AO, Kim DH, Lee KE, Jung Y, Kim SJ. Effect of self-assembled peptide-mesenchymal stem cell complex on the progression of osteoarthritis in a rat model. Int J Nanomedicine 2014; 9 Suppl 1:141-57. [PMID: 24872709 PMCID: PMC4024982 DOI: 10.2147/ijn.s54114] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
PURPOSE To evaluate the efficacy of mesenchymal stem cells (MSCs) encapsulated in self-assembled peptide (SAP) hydrogels in a rat knee model for the prevention of osteoarthritis (OA) progression. MATERIALS AND METHODS Nanostructured KLD-12 SAPs were used as the injectable hydrogels. Thirty-three Sprague Dawley rats were used for the OA model. Ten rats were used for the evaluation of biotin-tagged SAP disappearance. Twenty-three rats were divided into four groups: MSC (n=6), SAP (n=6), SAP-MSC (n=6), and no treatment (n=5). MSCs, SAPs, and SAP-MSCs were injected into the knee joints 3 weeks postsurgery. Histologic examination, immunofluorescent staining, measurement of cytokine levels, and micro-computed tomography analysis were conducted 6 weeks after injections. Behavioral studies were done to establish baseline measurements before treatment, and repeated 3 and 6 weeks after treatment to measure the efficacy of SAP-MSCs. RESULTS Concentration of biotinylated SAP at week 1 was not significantly different from those at week 3 and week 6 (P=0.565). Bone mineral density was significantly lower in SAP-MSC groups than controls (P=0.002). Significant differences in terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick-end labeling staining between the control group and all other groups were observed. Caspase-8, tissue inhibitor of metalloproteinases 1, and matrix metalloproteinase 9 were diffusely stained in controls, whereas localized or minimal staining was observed in other groups. Modified Mankin scores were significantly lower in the SAP and SAP-MSC groups than in controls (P=0.001 and 0.013). Although not statistically significant, synovial inflammation scores were lower in the SAP (1.3±0.3) and SAP-MSC (1.3±0.2) groups than in controls (2.6±0.2). However, neither the cytokine level nor the behavioral score was significantly different between groups. CONCLUSION Injection of SAP-MSC hydrogels showed evidence of chondroprotection, as measured by the histologic grading and decreased expression of biochemical markers of inflammation and apoptosis. It also lowered subchondral bone mineral density, which can be increased by OA. This suggests that the SAP-MSC complex may have clinical potential to inhibit OA progression.
Collapse
Affiliation(s)
- Ji Eun Kim
- Biomaterials Research Center, Korea Institute of Science and Technology, Seoul, South Korea
| | - Sang Mok Lee
- Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Seoul, South Korea
| | - Soo Hyun Kim
- Biomaterials Research Center, Korea Institute of Science and Technology, Seoul, South Korea
| | - Phil Tatman
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Albert O Gee
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA
| | - Deok-Ho Kim
- Department of Bioengineering, University of Washington, Seattle, WA, USA ; Institute for Stem Cell and Regenerative Medicine and Center for Cardiovascular Biology, University of Washington, Seattle, WA, USA
| | - Kyung Eun Lee
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul, South Korea
| | - Youngmee Jung
- Biomaterials Research Center, Korea Institute of Science and Technology, Seoul, South Korea
| | - Sang Jun Kim
- Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Seoul, South Korea
| |
Collapse
|
167
|
Nguyen MM, Eckes KM, Suggs LJ. Charge and sequence effects on the self-assembly and subsequent hydrogelation of Fmoc-depsipeptides. SOFT MATTER 2014; 10:2693-702. [PMID: 24647784 PMCID: PMC4018732 DOI: 10.1039/c4sm00009a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Herein we report on the self-assembly of a family of Fmoc-depsipeptides into nanofibers and hydrogels. We show that fiber formation occurs in depsipeptide structures in which the fluorenyl group is closely associated and that side-chain charge and sequence affect the extent of self-assembly and subsequent gelation. Using fluorescence emission spectroscopy and circular dichroism, we show that self-assembly can be monitored and is observed in these slow-gelling systems prior to hydrogel formation. We also demonstrate that the ionic strength of salt-containing solutions affects the time at which self-assembly results in gelation of the bulk solution. From transmission electron microscopy, we report that morphological changes progress over time and are observed as micelles transitioning to fibers prior to the onset of gelation. Gelled depsipeptides degraded at a slower rate than non-gelled samples in the presence of salt, while hydrolysis in water of both gels and solution samples was minimal even after 14 days. Our work shows that while incorporating ester functionality within a peptide backbone reduces the number of hydrogen bonding sites available for forming and stabilizing supramolecular assemblies, the substitution does not prohibit self-assembly and subsequent gelation.
Collapse
Affiliation(s)
- Mary M. Nguyen
- The University of Texas at Austin, Department of Biomedical Engineering, 107 W Dean Keeton Street, Austin, TX, 78712, USA. Fax: 512 471 0616; Tel: 512 232 8593
| | - Kevin M. Eckes
- The University of Texas at Austin, Department of Biomedical Engineering, 107 W Dean Keeton Street, Austin, TX, 78712, USA. Fax: 512 471 0616; Tel: 512 232 8593
| | - Laura J. Suggs
- The University of Texas at Austin, Department of Biomedical Engineering, 107 W Dean Keeton Street, Austin, TX, 78712, USA. Fax: 512 471 0616; Tel: 512 232 8593
| |
Collapse
|
168
|
Sakina R, Ali M. An Appraisal of the Efficacy and Effectiveness of Nanoscaffolds Developed by Different Techniques for Bone Tissue Engineering Applications: Electrospinning A Paradigm Shift. ADVANCES IN POLYMER TECHNOLOGY 2014. [DOI: 10.1002/adv.21429] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Rabeil Sakina
- Department of Biomedical Engineering & Sciences; School of Mechanical and Manufacturing Engineering, National University of Sciences and Technology; Islamabad 44000 Pakistan
| | - Murtaza Ali
- Department of Biomedical Engineering & Sciences; School of Mechanical and Manufacturing Engineering, National University of Sciences and Technology; Islamabad 44000 Pakistan
| |
Collapse
|
169
|
Das RK, Zouani OF. A review of the effects of the cell environment physicochemical nanoarchitecture on stem cell commitment. Biomaterials 2014; 35:5278-5293. [PMID: 24720880 DOI: 10.1016/j.biomaterials.2014.03.044] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 03/10/2014] [Indexed: 12/14/2022]
Abstract
Physicochemical features of a cell nanoenvironment exert important influence on stem cell behavior and include the influence of matrix elasticity and topography on differentiation processes. The presence of growth factors such as TGF-β and BMPs on these matrices provides chemical cues and thus plays vital role in directing eventual stem cell fate. Engineering of functional biomimetic scaffolds that present programmed spatio-temporal physical and chemical signals to stem cells holds great promise in stem cell therapy. Progress in this field requires tacit understanding of the mechanistic aspects of cell-environment nanointeractions, so that they can be manipulated and exploited for the design of sophisticated next generation biomaterials. In this review, we report and discuss the evolution of these processes and pathways in the context of matrix adhesion as they might relate to stemness and stem cell differentiation. Super-resolution microscopy and single-molecule methods for in vitro nano-manipulation are helping to identify and characterize the molecules and mechanics of structural transitions within stem cells and matrices. All these advances facilitate research toward understanding of stem cell niche and consequently to developing new class of biomaterials helping the "used biomaterials" for applications in tissue engineering and regenerative medicine.
Collapse
Affiliation(s)
- Rajat K Das
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
| | - Omar F Zouani
- AVEGEM, Parc Unitec 1, 2 Allée du Doyen Georges Brus, 33600 Pessac, France.
| |
Collapse
|
170
|
Abul-Haija YM, Roy S, Frederix PWJM, Javid N, Jayawarna V, Ulijn RV. Biocatalytically triggered co-assembly of two-component core/shell nanofibers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:973-979. [PMID: 24027125 DOI: 10.1002/smll.201301668] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/29/2013] [Indexed: 06/02/2023]
Abstract
For the development of applications and novel uses for peptide nanostructures, robust routes for their surface functionalization, that ideally do not interfere with their self-assembly properties, are required. Many existing methods rely on covalent functionalization, where building blocks are appended with functional groups, either pre- or post-assembly. A facile supramolecular approach is demonstrated for the formation of functionalized nanofibers by combining the advantages of biocatalytic self-assembly and surfactant/gelator co-assembly. This is achieved by enzymatically triggered reconfiguration of free flowing micellar aggregates of pre-gelators and functional surfactants to form nanofibers that incorporate and display the surfactants' functionality at the surface. Furthermore, by varying enzyme concentration, the gel stiffness and supramolecular organization of building blocks can be varied.
Collapse
Affiliation(s)
- Yousef M Abul-Haija
- Pure and Applied Chemistry Department/WestCHEM, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | | | | | | | | | | |
Collapse
|
171
|
Ding X, Janjanam J, Tiwari A, Thompson M, Heiden PA. Peptide-directed self-assembly of functionalized polymeric nanoparticles part I: design and self-assembly of peptide-copolymer conjugates into nanoparticle fibers and 3D scaffolds. Macromol Biosci 2014; 14:853-71. [PMID: 24610743 DOI: 10.1002/mabi.201300569] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 01/26/2014] [Indexed: 11/05/2022]
Abstract
A robust self-assembly of nanoparticles into fibers and 3D scaffolds is designed and fabricated by functionalizing a RAFT-polymerized amphiphilic triblock copolymer with designer ionic complementary peptides so that the assembled core-shell polymeric nanoparticles are directed by peptide assembly into continuous "nanoparticle fibers," ultimately leading to 3D fiber scaffolds. The assembled nanostructure is confirmed by FESEM and optical microscopy. The assembly is not hindered when a protein (insulin) is incorporated within the nanoparticles as an active ingredient. MTS cytotoxicity tests on SW-620 cell lines show that the peptides, copolymers, and peptide-copolymer conjugates are biocompatible. The methodology of self-assembled nanoparticle fibers and 3D scaffolds is intended to combine the advantages of a flexible hydrogel scaffold with the versatility of controlled release nanoparticles to offer unprecedented ability to incorporate desired drug(s) within a self-assembled scaffold system with individual control over the release of each drug.
Collapse
Affiliation(s)
- Xiaochu Ding
- Department of Chemistry, Michigan Technological University, Houghton, MI, 49931, USA.
| | | | | | | | | |
Collapse
|
172
|
Haridas V, Sadanandan S, Collart-Dutilleul PY, Gronthos S, Voelcker NH. Lysine-appended polydiacetylene scaffolds for human mesenchymal stem cells. Biomacromolecules 2014; 15:582-90. [PMID: 24364714 DOI: 10.1021/bm4015655] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We report on the self-assembly based fabrication of fibrous polymers for tissue engineering applications. Directed self-assembly followed by polymerization of lysine-appended diacetylenes generated a variety of polymers (P1-P5) with distinct chemical properties. The self-assembly along with the conjugated double and triple bonds and rigid geometry of diacetylene backbone imposed a nanofibrous morphology on the resulting polymers. Chemical properties including wettability of the polymers were tuned by using lysine (Lys) with orthogonal protecting groups (Boc and Fmoc). These Lys-appended polydiacetylene scaffolds were compared in terms of their efficiency toward human mesenchymal stem cells adhesion and spreading. Interestingly, polymer P4 containing Lys N(α)-NH2 and Lys N(ε)-Boc with balanced wettability supported cell adhesion better than the more hydrophobic polymer P2 with N(ε)-Boc and N(α)-Fmoc or more hydrophilic polymer P5 containing free N(ε) and N(α) amino groups. The molecular level control in the fabrication of nanofibrous polymers compared with other existing methods for the generation of fibrous polymers is the hallmark of this work.
Collapse
Affiliation(s)
- V Haridas
- Department of Chemistry, Indian Institute of Technology Delhi , New Delhi-110016, India
| | | | | | | | | |
Collapse
|
173
|
Feng P, Wei P, Shuai C, Peng S. Characterization of mechanical and biological properties of 3-D scaffolds reinforced with zinc oxide for bone tissue engineering. PLoS One 2014; 9:e87755. [PMID: 24498185 PMCID: PMC3909231 DOI: 10.1371/journal.pone.0087755] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 01/02/2014] [Indexed: 11/18/2022] Open
Abstract
A scaffold for bone tissue engineering should have highly interconnected porous structure, appropriate mechanical and biological properties. In this work, we fabricated well-interconnected porous β-tricalcium phosphate (β-TCP) scaffolds via selective laser sintering (SLS). We found that the mechanical and biological properties of the scaffolds were improved by doping of zinc oxide (ZnO). Our data showed that the fracture toughness increased from 1.09 to 1.40 MPam(1/2), and the compressive strength increased from 3.01 to 17.89 MPa when the content of ZnO increased from 0 to 2.5 wt%. It is hypothesized that the increase of ZnO would lead to a reduction in grain size and an increase in density of the strut. However, the fracture toughness and compressive strength decreased with further increasing of ZnO content, which may be due to the sharp increase in grain size. The biocompatibility of the scaffolds was investigated by analyzing the adhesion and the morphology of human osteoblast-like MG-63 cells cultured on the surfaces of the scaffolds. The scaffolds exhibited better and better ability to support cell attachment and proliferation when the content of ZnO increased from 0 to 2.5 wt%. Moreover, a bone like apatite layer formed on the surfaces of the scaffolds after incubation in simulated body fluid (SBF), indicating an ability of osteoinduction and osteoconduction. In summary, interconnected porous β-TCP scaffolds doped with ZnO were successfully fabricated and revealed good mechanical and biological properties, which may be used for bone repair and replacement potentially.
Collapse
Affiliation(s)
- Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, Hunan Province, P. R. China
| | - Pingpin Wei
- Cancer Research Institute, Central South University, Changsha, Hunan Province, P. R. China
| | - Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, Hunan Province, P. R. China
- Department of Regenerative Medicine & Cell Biology, Medical University of South Carolina, Charleston, South Carolina, United States of America
- * E-mail: (CS); (SP)
| | - Shuping Peng
- Cancer Research Institute, Central South University, Changsha, Hunan Province, P. R. China
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut, United States of America
- * E-mail: (CS); (SP)
| |
Collapse
|
174
|
Williams ML, Bhatia SK. Engineering the extracellular matrix for clinical applications: endoderm, mesoderm, and ectoderm. Biotechnol J 2014; 9:337-47. [PMID: 24390851 DOI: 10.1002/biot.201300120] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 10/09/2013] [Accepted: 11/27/2013] [Indexed: 12/12/2022]
Abstract
Tissue engineering is rapidly progressing from a research-based discipline to clinical applications. Emerging technologies could be utilized to develop therapeutics for a wide range of diseases, but many are contingent on a cell scaffold that can produce proper tissue ultrastructure. The extracellular matrix, which a cell scaffold simulates, is not merely a foundation for tissue growth but a dynamic participant in cellular crosstalk and organ homeostasis. Cells change their growth rates, recruitment, and differentiation in response to the composition, modulus, and patterning of the substrate on which they reside. Cell scaffolds can regulate these factors through precision design, functionalization, and application. The ideal therapy would utilize highly specialized cell scaffolds to best mimic the tissue of interest. This paper discusses advantages and challenges of optimized cell scaffold design in the endoderm, mesoderm, and ectoderm for clinical applications in tracheal transplant, cardiac regeneration, and skin grafts, respectively.
Collapse
Affiliation(s)
- Miguel L Williams
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | | |
Collapse
|
175
|
Tejeda-Montes E, Smith KH, Rebollo E, Gómez R, Alonso M, Rodriguez-Cabello JC, Engel E, Mata A. Bioactive membranes for bone regeneration applications: effect of physical and biomolecular signals on mesenchymal stem cell behavior. Acta Biomater 2014; 10:134-41. [PMID: 24035887 DOI: 10.1016/j.actbio.2013.09.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 08/07/2013] [Accepted: 09/03/2013] [Indexed: 12/25/2022]
Abstract
This study focuses on the in vitro characterization of bioactive elastin-like recombinamer (ELR) membranes for bone regeneration applications. Four bioactive ELRs exhibiting epitopes designed to promote mesenchymal stem cell adhesion (RGDS), endothelial cell adhesion (REDV), mineralization (HAP), and both cell adhesion and mineralization (HAP-RGDS) were synthesized using standard recombinant protein techniques. The materials were then used to fabricate ELR membranes incorporating a variety of topographical micropatterns including channels, holes and posts. Primary rat mesenchymal stem cells (rMSCs) were cultured on the different membranes and the effects of biomolecular and physical signals on cell adhesion, morphology, proliferation, and differentiation were evaluated. All results were analyzed using a custom-made MATLAB program for high throughput image analysis. Effects on cell morphology were mostly dependent on surface topography, while cell proliferation and cell differentiation were largely dependent on the biomolecular signaling from the ELR membranes. In particular, osteogenic differentiation (evaluated by staining for the osteoblastic marker osterix) was significantly enhanced on cells cultured on HAP membranes. Remarkably, cells growing on membranes containing the HAP sequence in non-osteogenic differentiation media exhibited significant up-regulation of the osteogenic marker as early as day 5, while those growing on fibronectin-coated glass in osteogenic differentiation media did not. These results are part of our ongoing effort to develop an optimized molecularly designed periosteal graft.
Collapse
|
176
|
Panda JJ, Chauhan VS. Short peptide based self-assembled nanostructures: implications in drug delivery and tissue engineering. Polym Chem 2014. [DOI: 10.1039/c4py00173g] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Self-assembling peptides with many potential biomedical applications.
Collapse
Affiliation(s)
- Jiban Jyoti Panda
- International Centre for Genetic Engineering and Biotechnology
- New Delhi 110067, India
- Institute of Nano Science and Technology
- Mohali, India
| | | |
Collapse
|
177
|
Self-assembling peptide nanofiber scaffolds enhance dopaminergic differentiation of mouse pluripotent stem cells in 3-dimensional culture. PLoS One 2013; 8:e84504. [PMID: 24376815 PMCID: PMC3869843 DOI: 10.1371/journal.pone.0084504] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 11/22/2013] [Indexed: 12/31/2022] Open
Abstract
Dopaminergic differentiation of embryonic stem cells (ESCs) gains more and more attention worldwide owing to its potential use for neurorestorative therapy for the treatment of Parkinson’s disease. The conventional 2D cell culture on petri dishes with various animal derived substrata such as collagen gels, laminin, and Matrigel is widely used to induce dopaminergic differentiation and it may limit the efficiency in the generation of dopaminergic neurons from ESCs and prevent their application for human therapies. Here, we reported that a self-assembling peptide made from natural amino acids has a property to generate a true 3D environment for dopaminergic differentiation. Mouse ESCs (R1) and mouse iPSCs (TTF-1) embedded in RADA16-I peptide-derived nanofiber scaffolds led to a marked increase in dopaminergic differentiation compared to the laminin-coated 2D culture or Matrigel-encapsulated 3D culture. These differentiated neurons expressed specific dopaminergic markers and produced appropriate patterns of action potential firing. Consistent with the increase in the number of dopaminergic neurons differentiated from R1 or TTF-1 in the self-assembling peptide nanofiber scaffold (SAPNS), both the expression levels of genes that involve in dopaminergic differentiation and maturation and the dopamine release in SAPNS culture were significantly elevated. The results of the study suggest that SAPNS provides a promising 3D culture system for dopaminergic differentiation.
Collapse
|
178
|
Volpatti LR, Knowles TPJ. Polymer physics inspired approaches for the study of the mechanical properties of amyloid fibrils. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23428] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lisa R. Volpatti
- Department of Chemistry; University of Cambridge; Lensfield Road, CB2 1EW United Kingdom
| | - Tuomas P. J. Knowles
- Department of Chemistry; University of Cambridge; Lensfield Road, CB2 1EW United Kingdom
| |
Collapse
|
179
|
Xia Y, Peng SS, Xie LZ, Lian XJ, Zhang XJ, Cui H, Song TX, Zhang FM, Gu N, Cui FZ. A novel combination of nano-scaffolds with micro-scaffolds to mimic extracellularmatrices improve osteogenesis. J Biomater Appl 2013; 29:59-71. [DOI: 10.1177/0885328213514467] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
To improve bone engineering for clinical applications, we coupled nanofiber-peptide hydrogel to nano-hydroxyapatite/collagen to form a bioactive scaffold (cnHAC) that mimics extracellular matrices. In comparison to nano-hydroxyapatite/collagen, we found that cnHAC promoted cell adhesion and spreading, and DNA content measurements, alkaline phosphatase activity assays, and reverse transcriptase-polymerase chain reaction analyses of osteogenic gene expression showed that cnHAC significantly improved cellular attachment, proliferation, and osteogenic differentiation in vitro ( P < 0.05). In vivo models based on rat calvarial implants showed that cnHAC significantly enhanced bone regeneration ( P < 0.05). In conclusion, we demonstrated that novel cnHAC scaffolds could potentially facilitate future bone regenerative medicine.
Collapse
Affiliation(s)
- Yang Xia
- Institute of Stomatology, Nanjing Medical University, Nanjing, PR China
| | - Sha-Sha Peng
- Institute of Stomatology, Nanjing Medical University, Nanjing, PR China
- Department of Stomatology, Yancheng No.1 People's Hospital, Yancheng, PR China
| | - Li-Zhe Xie
- Institute of Stomatology, Nanjing Medical University, Nanjing, PR China
| | - Xiao-Jie Lian
- Biomaterials Laboratory, Department of Materials Science and Engineering, Tsinghua University, Beijing, PR China
- School of Mechanics, Taiyuan University of Technology, Taiyuan, PR China
| | - Xiao-Jun Zhang
- Beijing Allgens Medical Science & Technology Co., Ltd, Beijing, PR China
| | - Han Cui
- Beijing Allgens Medical Science & Technology Co., Ltd, Beijing, PR China
| | - Tian-Xi Song
- Beijing Allgens Medical Science & Technology Co., Ltd, Beijing, PR China
| | - Fei-Min Zhang
- Institute of Stomatology, Nanjing Medical University, Nanjing, PR China
| | - Ning Gu
- Suzhou Institute, Southeast University, Suzhou, PR China
| | - Fu-Zhai Cui
- Biomaterials Laboratory, Department of Materials Science and Engineering, Tsinghua University, Beijing, PR China
| |
Collapse
|
180
|
Functionalization of biomaterials with small osteoinductive moieties. Acta Biomater 2013; 9:8773-89. [PMID: 23933486 DOI: 10.1016/j.actbio.2013.08.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 07/11/2013] [Accepted: 08/02/2013] [Indexed: 12/16/2022]
Abstract
Human mesenchymal stem cells (MSCs) are currently recognized as a powerful cell source for regenerative medicine, notably for their capacity to differentiate into multiple cell types. The combination of MSCs with biomaterials functionalized with instructive cues can be used as a strategy to direct specific lineage commitment, and can thus improve the therapeutic efficacy of these cells. In terms of biomaterial design, one common approach is the functionalization of materials with ligands capable of directly binding to cell receptors and trigger specific differentiation signaling pathways. Other strategies focus on the use of moieties that have an indirect effect, acting, for example, as sequesters of bioactive ligands present in the extracellular milieu that, in turn, will interact with cells. Compared with complex biomolecules, the use of simple compounds, such as chemical moieties and peptides, and other small molecules can be advantageous by leading to less expensive and easily tunable biomaterial formulations. This review describes different strategies that have been used to promote substrate-mediated guidance of osteogenic differentiation of immature osteoblasts, osteoprogenitors and MSCs, through chemically conjugated small moieties, both in two- and three-dimensional set-ups. In each case, the selected moiety, the coupling strategy and the main findings of the study were highlighted. The latest advances and future perspectives in the field are also discussed.
Collapse
|
181
|
Heterodimeric BMP-2/7 antagonizes the inhibition of all-trans retinoic acid and promotes the osteoblastogenesis. PLoS One 2013; 8:e78198. [PMID: 24205156 PMCID: PMC3813516 DOI: 10.1371/journal.pone.0078198] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 09/09/2013] [Indexed: 12/31/2022] Open
Abstract
Objectives Hypervitaminosis A and alcoholism can result in a low mineral density and compromised regenerative capacity of bone, thus delaying implant osteointegration. The inhibitory effect of all-trans retinoic acid on osteoblastogenesis is considered to be one of the mechanisms. We hypothesized that heterodimeric bone morphogenetic protein-2/7 could antagonize all-trans retinoic acid and enhance osteoblastogenesis, with an aim to accelerate and enhance bone regeneration and implant osteointegration. Materials and Methods We applied 5 ng/ml or 50 ng/ml bone morphogenetic protein-2/7 to restore the osteoblastogenesis of pre-osteoblasts (MC3T3-E1 cell line) that was inhibited by 1 µM all-trans retinoic acid. We evaluated the efficacy by assessing cell numbers (proliferation), alkaline phosphatase activity (a marker for early differentiation), osteocalcin (a marker for late differentiation), calcium deposition (a marker for final mineralization) and the expression of osteoblastogenic genes (such as Runx2, Collagen Ia, alkaline phosphatase and osteocalcin) at different time points. Results All-trans retinoic acid significantly inhibited the expression of all the tested osteoblastogenic genes and proteins except alkaline phosphatase activity. In the presence of ATRA, 50 ng/ml bone morphogenetic protein-2/7 not only completely restored but also significantly enhanced all the osteoblastogenic genes and proteins. On the 28th day, mineralization was completely inhibited by all-trans retinoic acid. In contrast, 50 ng/ml BMP-2/7 could antagonize ATRA and significantly enhance the mineralization about 2.5 folds in comparison with the control treatment (no ATRA, no BMP2/7). Conclusions Heterodimeric bone morphogenetic protein-2/7 bears a promising application potential to significantly promote bone regeneration and implant osteointegration for the patients with hypervitaminosis A and alcoholism.
Collapse
|
182
|
Hong MH, Kim SM, Om JY, Kwon N, Lee YK. Seeding cells on calcium phosphate scaffolds using hydrogel enhanced osteoblast proliferation and differentiation. Ann Biomed Eng 2013; 42:1424-35. [PMID: 24129755 DOI: 10.1007/s10439-013-0926-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 10/07/2013] [Indexed: 01/07/2023]
Abstract
Internal pores in calcium phosphate (CaP) scaffolds pose an obstacle in cell seeding efficiency. Previous studies have shown inverse relationships between cell attachment and internal pore size, which mainly resulted from cells flowing to the bottom of culture plates. In order to overcome this structure-based setback, we have designed a method for cell seeding that involves hydrogel. CaP scaffolds fabricated with hydroxyapatite, biphasic calcium phosphate, and β-tricalcium phosphate, had respective porosities of 77.0, 77.9, and 82.5% and pore diameters of 671.1, 694.7, and 842.8 μm. We seeded the cells on the scaffolds using two methods: the first using osteogenic medium and the second using hydrogel to entrap cells. As expected, cell seeding efficiency of the groups with hydrogel ranged from 92.5 to 96.3%, whereas efficiency of the control groups ranged only from 64.2 to 71.8%. Cell proliferation followed a similar trend, which may have further influenced early stages of cell differentiation. We suggest that our method of cell seeding with hydrogel can impact the field of tissue engineering even further with modifications of the materials or the addition of biological factors.
Collapse
Affiliation(s)
- Min-Ho Hong
- Department of Orthopaedic Surgery, Center for Orthopaedic Research, Columbia University Medical Center, 650 West 168th Street, New York, NY, 10032, USA
| | | | | | | | | |
Collapse
|
183
|
Bi W, Gu Z, Zheng Y, Wang L, Guo J, Wu G. Antagonistic and synergistic effects of bone morphogenetic protein 2/7 and all-trans retinoic acid on the osteogenic differentiation of rat bone marrow stromal cells. Dev Growth Differ 2013; 55:744-54. [PMID: 24111806 DOI: 10.1111/dgd.12090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 08/07/2013] [Accepted: 08/24/2013] [Indexed: 11/29/2022]
Abstract
The osteogenesis of bone marrow stromal cells (BMSCs) is of paramount importance for the repair of large-size bone defects, which may be compromised by the dietary-accumulated all-trans retinoic acid (ATRA). We have shown that heterodimeric bone morphogenetic protein 2/7 (BMP2/7) could induce bone regeneration in a significantly higher dose-efficiency in comparison with homodimeric BMPs. In this study, we evaluated the effects of ATRA and BMP2/7 on the proliferation, differentiation, mineralization and osteogenic genes. ATRA and BMP2/7 exhibited both antagonistic and synergistic effects on the osteogenesis of BMSCs. ATRA significantly inhibited proliferation and expression of osteocalcin but enhanced the activity of alkaline phosphatase of BMSCs. On day 21, 50 ng/mL BMP2/7 could antagonize the inhibitive effects of ATRA and significantly enhance osteogenesis of BMSCs. These findings suggested a promising application potential of heterodimeric BMP2/7 in clinic to promote bone regeneration for the cases with dietary accumulated ATRA.
Collapse
Affiliation(s)
- Wenjuan Bi
- School/Hospital of Stomatology, Zhejiang University, Yan'an St. 395, Hangzhou, Zhejiang, 310006, China
| | - Zhiyuan Gu
- School/Hospital of Stomatology, Zhejiang University, Yan'an St. 395, Hangzhou, Zhejiang, 310006, China.,School of Stomatology, Hangzhou Dental Hospital, Zhejiang Chinese Medical University, 97 Mailbox, Binwen Road 548, Binjiang District, Hangzhou, 310053, China
| | - Yuanna Zheng
- School of Stomatology, Hangzhou Dental Hospital, Zhejiang Chinese Medical University, 97 Mailbox, Binwen Road 548, Binjiang District, Hangzhou, 310053, China
| | - Limin Wang
- Department of Stomatology, No. 117th Hospital of People's Liberation Army, Airport Road 40, Hangzhou, Zhejiang, 310004, China
| | - Jing Guo
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU-University of Amsterdam, Research Institute MOVE, VU University, Gustav Mahlerlaan 3004, Amsterdam, 1018LA, the Netherlands
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU-University of Amsterdam, Research Institute MOVE, VU University, Gustav Mahlerlaan 3004, Amsterdam, 1018LA, the Netherlands
| |
Collapse
|
184
|
Cormier AR, Pang X, Zimmerman MI, Zhou HX, Paravastu AK. Molecular structure of RADA16-I designer self-assembling peptide nanofibers. ACS NANO 2013; 7:7562-72. [PMID: 23977885 PMCID: PMC3946435 DOI: 10.1021/nn401562f] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The designer self-assembling peptide RADA16-I forms nanofiber matrices which have shown great promise for regenerative medicine and three-dimensional cell culture. The RADA16-I amino acid sequence has a β-strand-promoting alternating hydrophobic/charged motif, but arrangement of β-strands into the nanofiber structure has not been previously determined. Here we present a structural model of RADA16-I nanofibers, based on solid-state NMR measurements on samples with different schemes for (13)C isotopic labeling. NMR peak positions and line widths indicate an ordered structure composed of β-strands. The NMR data show that the nanofibers are composed of two stacked β-sheets stabilized by a hydrophobic core formed by alanine side chains, consistent with previous proposals. However, the previously proposed antiparallel β-sheet structure is ruled out by measured (13)C-(13)C dipolar couplings. Instead, neighboring β-strands within β-sheets are parallel, with a registry shift that allows cross-strand staggering of oppositely charged arginine and aspartate side chains. The resulting structural model is compared to nanofiber dimensions observed via images taken by transmission electron microscopy and atomic force microscopy. Multiple NMR peaks for each alanine side chain were observed and could be attributed to multiple configurations of side chain packing within a single scheme for intermolecular packing.
Collapse
Affiliation(s)
- Ashley R. Cormier
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer Street, Tallahassee, FL 32310-6046
- National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310
| | - Xiaodong Pang
- Department of Physics and Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306
| | - Maxwell I. Zimmerman
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer Street, Tallahassee, FL 32310-6046
- National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310
| | - Huan-Xiang Zhou
- Department of Physics and Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306
| | - Anant K. Paravastu
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer Street, Tallahassee, FL 32310-6046
- National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310
- Address correspondence to
| |
Collapse
|
185
|
Busseron E, Ruff Y, Moulin E, Giuseppone N. Supramolecular self-assemblies as functional nanomaterials. NANOSCALE 2013; 5:7098-140. [PMID: 23832165 DOI: 10.1039/c3nr02176a] [Citation(s) in RCA: 496] [Impact Index Per Article: 45.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In this review, we survey the diversity of structures and functions which are encountered in advanced self-assembled nanomaterials. We highlight their flourishing implementations in three active domains of applications: biomedical sciences, information technologies, and environmental sciences. Our main objective is to provide the reader with a concise and straightforward entry to this broad field by selecting the most recent and important research articles, supported by some more comprehensive reviews to introduce each topic. Overall, this compilation illustrates how, based on the rules of supramolecular chemistry, the bottom-up approach to design functional objects at the nanoscale is currently producing highly sophisticated materials oriented towards a growing number of applications with high societal impact.
Collapse
Affiliation(s)
- Eric Busseron
- SAMS Research Group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84087, 67034 Strasbourg Cedex 2, France
| | | | | | | |
Collapse
|
186
|
Mendes AC, Baran ET, Reis RL, Azevedo HS. Self-assembly in nature: using the principles of nature to create complex nanobiomaterials. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2013; 5:582-612. [DOI: 10.1002/wnan.1238] [Citation(s) in RCA: 208] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 06/03/2013] [Indexed: 01/01/2023]
Affiliation(s)
- Ana C. Mendes
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Erkan T. Baran
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Rui L. Reis
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Helena S. Azevedo
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga/Guimarães Portugal
| |
Collapse
|
187
|
Li Q, Chow KL, Chau Y. Three-dimensional self-assembling peptide matrix enhances the formation of embryoid bodies and their neuronal differentiation. J Biomed Mater Res A 2013; 102:1991-2000. [DOI: 10.1002/jbm.a.34876] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Revised: 04/10/2013] [Accepted: 07/09/2013] [Indexed: 01/14/2023]
Affiliation(s)
- Qianqian Li
- Department of Chemical and Biomolecular Engineering; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong Republic of China
| | - King L. Chow
- Division of Life Science; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong Republic of China
- Division of Biomedical Engineering; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong Republic of China
- State Key Laboratory of Molecular Neuroscience; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong Republic of China
| | - Ying Chau
- Department of Chemical and Biomolecular Engineering; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong Republic of China
- Division of Biomedical Engineering; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong Republic of China
| |
Collapse
|
188
|
|
189
|
Liu Y, Yang Y, Wang C, Zhao X. Stimuli-responsive self-assembling peptides made from antibacterial peptides. NANOSCALE 2013; 5:6413-21. [PMID: 23739953 DOI: 10.1039/c3nr00225j] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
How to use bioactive peptide sequences as fundamental building blocks to make hydrogel materials which are stimuli-responsive? In this article, we provide a novel designed peptide comprising two antibacterial peptide sequences (KIGAKI)3-NH2 and a central tetrapeptide linker. Results show that balancing the forces of the electrostatic repulsion of the charged lysine residues against the hydrophobic collapse of the isoleucine and alanine residues and backbone β-sheet hydrogen bonding allows the structural transition and formation of individually dispersed nanofibers. Circular Dichroism (CD) and rheology analysis demonstrated that the designed peptide can undergo an abrupt structural transition from a random coil to a stable unimolecular β-hairpin conformation and subsequently form an elastic hydrogel when exposed to external stimuli such as pH, ionic strength and heat. The assembly kinetics of the obtained antibacterial sequence comprising peptide (ASCP) was studied by time-lapse Atomic Force Microscopy (AFM) and Thioflavin T (ThT) binding assay. In addition, the inherent antibacterial activity of the peptide hydrogel was confirmed by the antibacterial assay against Escherichia coli. This example described epitomizes the use of bioactive peptide sequences in the design of finite self-assembled structures with potential inherent activity. These hydrogel materials may find applications in drug delivery, tissue engineering and regenerative medicine.
Collapse
Affiliation(s)
- Yanfei Liu
- West China Hospital Nanomedicine Laboratory, West China Hospital, Sichuan University, Chengdu, 610041, China
| | | | | | | |
Collapse
|
190
|
Li M, Liu W, Sun J, Xianyu Y, Wang J, Zhang W, Zheng W, Huang D, Di S, Long YZ, Jiang X. Culturing primary human osteoblasts on electrospun poly(lactic-co-glycolic acid) and poly(lactic-co-glycolic acid)/nanohydroxyapatite scaffolds for bone tissue engineering. ACS APPLIED MATERIALS & INTERFACES 2013; 5:5921-5926. [PMID: 23790233 DOI: 10.1021/am401937m] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this work, we fabricated polymeric fibrous scaffolds for bone tissue engineering using primary human osteoblasts (HOB) as the model cell. By employing one simple approach, electrospinning, we produced poly(lactic-co-glycolic acid) (PLGA) scaffolds with different topographies including microspheres, beaded fibers, and uniform fibers, as well as the PLGA/nanohydroxyapatite (nano-HA) composite scaffold. The bone-bonding ability of electrospun scaffolds was investigated by using simulated body fluid (SBF) solution, and the nano-HA in PLGA/nano-HA composite scaffold can significantly enhance the formation of the bonelike apatites. Furthermore, we carried out in vitro experiments to test the performance of electrospun scaffolds by utilizing both mouse preosteoblast cell line (MC 3T3 E1) and HOB. Results including cell viability, alkaline phosphatase (ALP) activity, and osteocalcin concentration demonstrated that the PLGA/nano-HA fibers can promote the proliferation of HOB efficiently, indicating that it is a promising scaffold for human bone repair.
Collapse
|
191
|
Ndlovu H, Ashcroft AE, Radford SE, Harris SA. Molecular dynamics simulations of mechanical failure in polymorphic arrangements of amyloid fibrils containing structural defects. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2013; 4:429-440. [PMID: 23946911 PMCID: PMC3740767 DOI: 10.3762/bjnano.4.50] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Accepted: 06/24/2013] [Indexed: 06/02/2023]
Abstract
We examine how the different steric packing arrangements found in amyloid fibril polymorphs can modulate their mechanical properties using steered molecular dynamics simulations. Our calculations demonstrate that for fibrils containing structural defects, their ability to resist force in a particular direction can be dominated by both the number and molecular details of the defects that are present. The simulations thereby suggest a hierarchy of factors that govern the mechanical resilience of fibrils, and illustrate the general principles that must be considered when quantifying the mechanical properties of amyloid fibres containing defects.
Collapse
Affiliation(s)
- Hlengisizwe Ndlovu
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Alison E Ashcroft
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
- School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Sheena E Radford
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
- School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Sarah A Harris
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| |
Collapse
|
192
|
Luo Z, Yue Y, Zhang Y, Yuan X, Gong J, Wang L, He B, Liu Z, Sun Y, Liu J, Hu M, Zheng J. Designer D-form self-assembling peptide nanofiber scaffolds for 3-dimensional cell cultures. Biomaterials 2013; 34:4902-13. [DOI: 10.1016/j.biomaterials.2013.03.081] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 03/27/2013] [Indexed: 12/21/2022]
|
193
|
Cormier AR, Lopez-Majada JM, Alamo RG, Paravastu AK. Distinct solid and solution state self-assembly pathways of RADA16-I designer peptide. J Pept Sci 2013; 19:477-84. [DOI: 10.1002/psc.2524] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 04/22/2013] [Accepted: 05/03/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Ashley R. Cormier
- FAMU-FSU College of Engineering; Department of Chemical and Biomedical Engineering; 2525 Pottsdamer Street Tallahassee FL 32310-6046 USA
- National High Magnetic Field Laboratory; 1800 E. Paul Dirac Drive Tallahassee FL 32310 USA
| | - Juan M. Lopez-Majada
- FAMU-FSU College of Engineering; Department of Chemical and Biomedical Engineering; 2525 Pottsdamer Street Tallahassee FL 32310-6046 USA
- National High Magnetic Field Laboratory; 1800 E. Paul Dirac Drive Tallahassee FL 32310 USA
| | - Rufina G. Alamo
- FAMU-FSU College of Engineering; Department of Chemical and Biomedical Engineering; 2525 Pottsdamer Street Tallahassee FL 32310-6046 USA
- National High Magnetic Field Laboratory; 1800 E. Paul Dirac Drive Tallahassee FL 32310 USA
| | - Anant K. Paravastu
- FAMU-FSU College of Engineering; Department of Chemical and Biomedical Engineering; 2525 Pottsdamer Street Tallahassee FL 32310-6046 USA
- National High Magnetic Field Laboratory; 1800 E. Paul Dirac Drive Tallahassee FL 32310 USA
| |
Collapse
|
194
|
Zou Z, Liu T, Li J, Li P, Ding Q, Peng G, Zheng Q, Zeng X, Wu Y, Guo X. Biocompatibility of functionalized designer self-assembling nanofiber scaffolds containing FRM motif for neural stem cells. J Biomed Mater Res A 2013; 102:1286-93. [PMID: 23703883 DOI: 10.1002/jbm.a.34804] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 02/15/2013] [Accepted: 05/09/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Zhenwei Zou
- Cancer Center; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| | - Ting Liu
- Department of Infectious disease; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| | - JingFeng Li
- Department of Orthopaedics; Zhongnan Hospital of Wuhan University; Wuhan 430071 China
| | - Pindong Li
- Cancer Center; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| | - Qian Ding
- Cancer Center; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| | - Gang Peng
- Cancer Center; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| | - Qixin Zheng
- Department of Orthopaedics; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| | - Xianlin Zeng
- Department of Orthopaedics; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| | - Yongchao Wu
- Department of Orthopaedics; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| | - Xiaodong Guo
- Department of Orthopaedics; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430022 China
| |
Collapse
|
195
|
Liu X, Wang X, Wang X, Ren H, He J, Qiao L, Cui FZ. Functionalized self-assembling peptide nanofiber hydrogels mimic stem cell niche to control human adipose stem cell behavior in vitro. Acta Biomater 2013; 9:6798-805. [PMID: 23380207 DOI: 10.1016/j.actbio.2013.01.027] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 01/21/2013] [Accepted: 01/25/2013] [Indexed: 10/27/2022]
Abstract
A class of designer functionalized self-assembling peptide nanofiber scaffolds developed from self-assembling peptide RADA16-I (AcN-RADARADARADARADA-CONH2) has become increasingly attractive not only for studying spatial behaviors of cells, but also for developing approaches for a wide range of medical applications including regenerative medicine, rapid hemostasis and cell therapy. In this study, we report three functionalized self-assembling peptide hydrogels that serve as a three-dimensional (3-D) artificial microenvironment to control human adipose stem cell (hASC) behavior in vitro. Short peptide motifs SKPPGTSS (bone marrow homing motif), FHRRIKA (heparin-binding motif) and PRGDSGYRGDS (two-unit RGD cell adhesion motif) were used to extend the C-terminus of RADA16-I to obtain functionalized peptides. Atomic force microscopy confirmed the formation of self-assembling nanofibers in the mixture of RADA16-I peptide and functionalized peptides. The behaviors of hASCs cultured in 3-D peptide hydrogels, including migration, proliferation and growth factor-secretion ability, were studied. Our results showed that the functionalized peptide hydrogels were suitable 3-D scaffolds for hASC growth with higher cell proliferation, migration and the secretion of angiogenic growth factors compared with tissue culture plates and pure RADA16-I scaffolds. The present study suggests that these functionalized designer peptide hydrogels not only have promising applications for diverse tissue engineering and regenerative medicine applications as stem cell delivery vehicles, but also could be a biomimetic 3-D system to study nanobiomaterial-stem cell interactions and to direct stem cell behaviors.
Collapse
|
196
|
|
197
|
Sangiambut S, Channon K, Thomson NM, Sato S, Tsuge T, Doi Y, Sivaniah E. A robust route to enzymatically functional, hierarchically self-assembled peptide frameworks. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:2661-2665. [PMID: 23341342 DOI: 10.1002/adma.201204127] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 11/21/2012] [Indexed: 06/01/2023]
Abstract
The addition of enzyme biofunctionality to self-assembling peptide nanofibers is challenging since such additions can inhibit functionality or self-assembly. We introduce a method for peptide nanofiber enzyme functionalization, demonstrated by the attachment of a polymerization synthase to peptide nanofibers. The enzyme generates a biocompatible, biodegradable biopolyester coat on the fibers with applicablity in medical engineering. This approach provides a template for generation of functional bionanomaterials.
Collapse
Affiliation(s)
- S Sangiambut
- Biological and Soft Systems, Cavendish Laboratory, University of Cambridge, CB3 0HE, UK
| | | | | | | | | | | | | |
Collapse
|
198
|
Hosseinkhani H, Hong PD, Yu DS. Self-assembled proteins and peptides for regenerative medicine. Chem Rev 2013; 113:4837-61. [PMID: 23547530 DOI: 10.1021/cr300131h] [Citation(s) in RCA: 196] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Hossein Hosseinkhani
- Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology (Taiwan Tech), Taipei 10607, Taiwan.
| | | | | |
Collapse
|
199
|
Marí-Buyé N, Luque T, Navajas D, Semino CE. Development of a three-dimensional bone-like construct in a soft self-assembling peptide matrix. Tissue Eng Part A 2013; 19:870-81. [PMID: 23157379 PMCID: PMC3589873 DOI: 10.1089/ten.tea.2012.0077] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Accepted: 10/17/2012] [Indexed: 12/25/2022] Open
Abstract
This work describes the development of a three-dimensional (3D) model of osteogenesis using mouse preosteoblastic MC3T3-E1 cells and a soft synthetic matrix made out of self-assembling peptide nanofibers. By adjusting the matrix stiffness to very low values (around 120 Pa), cells were found to migrate within the matrix, interact forming a cell-cell network, and create a contracted and stiffer structure. Interestingly, during this process, cells spontaneously upregulate the expression of bone-related proteins such as collagen type I, bone sialoprotein, and osteocalcin, indicating that the 3D environment enhances their osteogenic potential. However, unlike MC3T3-E1 cultures in 2D, the addition of dexamethasone is required to acquire a final mature phenotype characterized by features such as matrix mineralization. Moreover, a slight increase in the hydrogel stiffness (threefold) or the addition of a cell contractility inhibitor (Rho kinase inhibitor) abrogates cell elongation, migration, and 3D culture contraction. However, this mechanical inhibition does not seem to noticeably affect the osteogenic process, at least at early culture times. This 3D bone model intends to emphasize cell-cell interactions, which have a critical role during tissue formation, by using a compliant unrestricted synthetic matrix.
Collapse
Affiliation(s)
- Núria Marí-Buyé
- Tissue Engineering Laboratory, Department of Bioengineering, IQS-Universitat Ramon Llull, Barcelona, Spain
- Translational Centre for Regenerative Medicine (TRM-Leipzig), Universität Leipzig, Leipzig, Germany
| | - Tomás Luque
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
- Institut de Bioenginyeria de Catalunya (IBEC), Barcelona, Spain
| | - Daniel Navajas
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
- Institut de Bioenginyeria de Catalunya (IBEC), Barcelona, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Bunyola, Spain
| | - Carlos E. Semino
- Tissue Engineering Laboratory, Department of Bioengineering, IQS-Universitat Ramon Llull, Barcelona, Spain
- Translational Centre for Regenerative Medicine (TRM-Leipzig), Universität Leipzig, Leipzig, Germany
| |
Collapse
|
200
|
Liedmann A, Frech S, Morgan PJ, Rolfs A, Frech MJ. Differentiation of human neural progenitor cells in functionalized hydrogel matrices. Biores Open Access 2013; 1:16-24. [PMID: 23515105 PMCID: PMC3560381 DOI: 10.1089/biores.2012.0209] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hydrogel-based three-dimensional (3D) scaffolds are widely used in the field of regenerative medicine, translational medicine, and tissue engineering. Recently, we reported the effect of scaffold formation on the differentiation and survival of human neural progenitor cells (hNPCs) using PuraMatrix™ (RADA-16) scaffolds. Here, we were interested in the impact of PuraMatrix modified by the addition of short peptide sequences, based on a bone marrow homing factor and laminin. The culture and differentiation of the hNPCs in the modified matrices resulted in an approximately fivefold increase in neuronal cells. The examination of apoptotic and necrotic cells, as well as the level of the anti-apoptotic protein Bcl-2, indicates benefits for cells hosted in the modified formulations. In addition, we found a trend to lower proportions of apoptotic or necrotic neuronal cells in the modified matrices. Interestingly, the neural progenitor cell pool was increased in all the tested matrices in comparison to the standard 2D culture system, while no difference was found between the modified matrices. We conclude that a combination of elevated neuronal differentiation and a protective effect of the modified matrices underlies the increased proportion of neuronal cells.
Collapse
Affiliation(s)
- Andrea Liedmann
- Albrecht-Kossel-Institute for Neuroregeneration, University of Rostock , Rostock, Germany
| | | | | | | | | |
Collapse
|