151
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Miguel SP, Figueira DR, Simões D, Ribeiro MP, Coutinho P, Ferreira P, Correia IJ. Electrospun polymeric nanofibres as wound dressings: A review. Colloids Surf B Biointerfaces 2018; 169:60-71. [PMID: 29747031 DOI: 10.1016/j.colsurfb.2018.05.011] [Citation(s) in RCA: 186] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 05/03/2018] [Accepted: 05/04/2018] [Indexed: 12/19/2022]
Abstract
Skin wounds have significant morbidity and mortality rates associated. This is explained by the limited effectiveness of the currently available treatments, which in some cases do not allow the reestablishment of the structure and functions of the damaged skin, leading to wound infection and dehydration. These drawbacks may have an impact on the healing process and ultimately prompt patients' death. For this reason, researchers are currently developing new wound dressings that enhance skin regeneration. Among them, electrospun polymeric nanofibres have been regarded as promising tools for improving skin regeneration due to their structural similarity with the extracellular matrix of normal skin, capacity to promote cell growth and proliferation and bactericidal activity as well as suitability to deliver bioactive molecules to the wound site. In this review, an overview of the recent studies concerning the production and evaluation of electrospun polymeric nanofibrous membranes for skin regenerative purposes is provided. Moreover, the current challenges and future perspectives of electrospun nanofibrous membranes suitable for this biomedical application are highlighted.
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Affiliation(s)
- Sónia P Miguel
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior,Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Daniela R Figueira
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior,Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Déborah Simões
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior,Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Maximiano P Ribeiro
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior,Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; UDI-IPG- Unidade de Investigação para o Desenvolvimento do Interior, Instituto Politécnico da Guarda, 6300-559 Guarda, Portugal
| | - Paula Coutinho
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior,Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; UDI-IPG- Unidade de Investigação para o Desenvolvimento do Interior, Instituto Politécnico da Guarda, 6300-559 Guarda, Portugal
| | - Paula Ferreira
- CIEPQPF, Department of Chemical Engineering, University of Coimbra, P-3030 790 Coimbra, Portugal
| | - Ilídio J Correia
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior,Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; CIEPQPF, Department of Chemical Engineering, University of Coimbra, P-3030 790 Coimbra, Portugal.
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152
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O’Neill E, Awale G, Daneshmandi L, Umerah O, Lo KWH. The roles of ions on bone regeneration. Drug Discov Today 2018; 23:879-890. [DOI: 10.1016/j.drudis.2018.01.049] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/04/2018] [Accepted: 01/29/2018] [Indexed: 12/16/2022]
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153
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Jung CS, Kim BK, Lee J, Min BH, Park SH. Development of Printable Natural Cartilage Matrix Bioink for 3D Printing of Irregular Tissue Shape. Tissue Eng Regen Med 2018; 15:155-162. [PMID: 30603543 PMCID: PMC6171689 DOI: 10.1007/s13770-017-0104-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 11/10/2017] [Accepted: 11/22/2017] [Indexed: 12/22/2022] Open
Abstract
The extracellular matrix (ECM) is known to provide instructive cues for cell attachment, proliferation, differentiation, and ultimately tissue regeneration. The use of decellularized ECM scaffolds for regenerative-medicine approaches is rapidly expanding. In this study, cartilage acellular matrix (CAM)-based bioink was developed to fabricate functional biomolecule-containing scaffolds. The CAM provides an adequate cartilage tissue-favorable environment for chondrogenic differentiation of cells. Conventional manufacturing techniques such as salt leaching, solvent casting, gas forming, and freeze drying when applied to CAM-based scaffolds cannot precisely control the scaffold geometry for mimicking tissue shape. As an alternative to the scaffold fabrication methods, 3D printing was recently introduced in the field of tissue engineering. 3D printing may better control the internal microstructure and external appearance because of the computer-assisted construction process. Hence, applications of the 3D printing technology to tissue engineering are rapidly proliferating. Therefore, printable ECM-based bioink should be developed for 3D structure stratification. The aim of this study was to develop printable natural CAM bioink for 3D printing of a tissue of irregular shape. Silk fibroin was chosen to support the printing of the CAM powder because it can be physically cross-linked and its viscosity can be easily controlled. The newly developed CAM-silk bioink was evaluated regarding printability, cell viability, and tissue differentiation. Moreover, we successfully demonstrated 3D printing of a cartilage-shaped scaffold using only this CAM-silk bioink. Future studies should assess the efficacy of in vivo implantation of 3D-printed cartilage-shaped scaffolds.
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Affiliation(s)
- Chi Sung Jung
- Departments of Molecular Science and Technology, Ajou University, 206, World Cup-ro, Yeongtonggu, Suwon, 16499 Korea
| | - Byeong Kook Kim
- Departments of Molecular Science and Technology, Ajou University, 206, World Cup-ro, Yeongtonggu, Suwon, 16499 Korea
| | - Junhee Lee
- Department of Nature-Inspired Nano Convergence System, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103 Korea
| | - Byoung-Hyun Min
- Departments of Molecular Science and Technology, Ajou University, 206, World Cup-ro, Yeongtonggu, Suwon, 16499 Korea
- Department of Orthopedic Surgery, School of Medicine, Ajou University, 206, World Cup-ro, Yeongtonggu, Suwon, 16499 Korea
| | - Sang-Hyug Park
- Department of Biomedical Engineering, Pukyong National University, 45, Yongso-ro, Namgu, Busan, 48513 Korea
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154
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Niepel MS, Almouhanna F, Ekambaram BK, Menzel M, Heilmann A, Groth T. Cross-linking multilayers of poly-l-lysine and hyaluronic acid: Effect on mesenchymal stem cell behavior. Int J Artif Organs 2018. [PMID: 29528795 DOI: 10.1177/0391398817752598] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Cells possess a specialized machinery through which they can sense physical as well as chemical alterations in their surrounding microenvironment that affect their cellular behavior. AIM In this study, we aim to establish a polyelectrolyte multilayer system of 24 layers of poly-l-lysine and hyaluronic acid to control stem cell response after chemical cross-linking. METHODS AND RESULTS The multilayer build-up process is monitored using different methods, which show that the studied polyelectrolyte multilayer system grows exponentially following the islands and islets theory. Successful chemical cross-linking is monitored by an increased zeta potential toward negative magnitude and an extraordinary growth in thickness. Human adipose-derived stem cells are used here and a relationship between cross-linking degree and cell spreading is shown as cells seeded on higher cross-linked polyelectrolyte multilayer show enhanced spreading. Furthermore, cells that fail to establish focal adhesions on native and low cross-linked polyelectrolyte multilayer films do not proliferate to a high extent in comparison to cells seeded on highly cross-linked polyelectrolyte multilayer, which also show an increased metabolic activity. Moreover, this study shows the relation between cross-linking degree and human adipose-derived stem cell lineage commitment. Histological staining reveals that highly cross-linked polyelectrolyte multilayers support osteogenic differentiation, whereas less cross-linked and native polyelectrolyte multilayers support adipogenic differentiation in the absence of any specific inducers. CONCLUSION Owing to the precise control of polyelectrolyte multilayer properties such as potential, wettability, and viscoelasticity, the system presented here offers great potential for guided stem cell differentiation in regenerative medicine, especially in combination with materials exhibiting a defined surface topography.
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Affiliation(s)
- Marcus S Niepel
- 1 Institute of Pharmacy, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,2 Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Fadi Almouhanna
- 1 Institute of Pharmacy, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,3 Pharmaceutical Biology, Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
| | - Bhavya K Ekambaram
- 1 Institute of Pharmacy, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Matthias Menzel
- 4 Biological and Macromolecular Materials Business Unit, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Andreas Heilmann
- 4 Biological and Macromolecular Materials Business Unit, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Thomas Groth
- 1 Institute of Pharmacy, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,2 Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
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155
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The development of an alginate/polycaprolactone composite scaffold for in situ transfection application. Carbohydr Polym 2018; 183:29-36. [DOI: 10.1016/j.carbpol.2017.11.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 10/05/2017] [Accepted: 11/08/2017] [Indexed: 12/13/2022]
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156
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Attachment of nanoparticulate drug-release systems on poly(ε-caprolactone) nanofibers via a graftpolymer as interlayer. Colloids Surf B Biointerfaces 2018; 163:309-320. [DOI: 10.1016/j.colsurfb.2017.12.050] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 12/20/2017] [Accepted: 12/27/2017] [Indexed: 12/22/2022]
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157
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Kucińska-Lipka J. Polyurethanes Crosslinked with Poly(vinyl alcohol) as a Slowly-Degradable and Hydrophilic Materials of Potential Use in Regenerative Medicine. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E352. [PMID: 29495510 PMCID: PMC5872931 DOI: 10.3390/ma11030352] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/12/2018] [Accepted: 02/22/2018] [Indexed: 01/29/2023]
Abstract
Novel, slowly-degradable and hydrophilic materials with proper mechanical properties and surface characteristics are in great demand within the biomedical field. In this paper, the design, synthesis, and characterization of polyurethanes (PUR) crosslinked with poly(vinyl alcohol) (PVA) as a new proposition for regenerative medicine is described. PVA-crosslinked PURs were synthesized by a two-step polymerization performed in a solvent (dimethylsulfoxide, DMSO). The raw materials used for the synthesis of PVA-crosslinked PURs were poly(ε-caprolactone) (PCL), 1,6-hexamethylene diisocyanate (HDI), and PVA as a crosslinking agent. The obtained materials were studied towards their physicochemical, mechanical, and biological performance. The tests revealed contact angle of the materials surface between 38-47° and tensile strength in the range of 41-52 MPa. Mechanical characteristics of the obtained PURs was close to the characteristics of native human bone such as the cortical bone (TSb = 51-151 MPa) or the cancellous bone (TSb = 10-20 MPa). The obtained PVA-crosslinked PURs did not show significant progress of degradation after 3 months of incubation in a phosphate-buffered saline (PBS). Accordingly, the obtained materials may behave similar to slowly-degradable materials, which can provide long-term physical support in, for example, tissue regeneration, as well as providing a uniform calcium deposition on the material surface, which may influence, for example, bone restoration. A performed short-term hemocompatibility study showed that obtained PVA-crosslinked PURs do not significantly influence blood components, and a cytotoxicity test performed with the use of MG 63 cell line revealed the great cytocompatibility of the obtained materials. According to the performed studies, such PVA-crosslinked PURs may be a suitable proposition for the field of tissue engineering in regenerative medicine.
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Affiliation(s)
- Justyna Kucińska-Lipka
- Department of Polymers Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza St. 11/12, 80-233 Gdansk, Poland.
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158
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Calejo MT, Ilmarinen T, Skottman H, Kellomäki M. Breath figures in tissue engineering and drug delivery: State-of-the-art and future perspectives. Acta Biomater 2018; 66:44-66. [PMID: 29183847 DOI: 10.1016/j.actbio.2017.11.043] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 11/09/2017] [Accepted: 11/22/2017] [Indexed: 12/11/2022]
Abstract
The breath figure (BF) method is an easy, low-cost method to prepare films with a highly organized honeycomb-like porous surface. The particular surface topography and porous nature of these materials makes them valuable substrates for studying the complex effects of topography on cell fate, and to produce biomimetic materials with high performance in tissue engineering. Numerous researchers over the last two decades have studied the effects of the honeycomb topography on a variety of primary and immortalized cell lines, and drew important conclusions that can be translated to the construction of optimal biomaterials for cell culture. The literature also encouragingly shows the potential of honeycomb films to induce differentiation of stem cells down a specific lineage without the need for biochemical stimuli. Here, we review the main studies where BF honeycomb films are used as substrates for tissue engineering applications. Furthermore, we highlight the numerous advantages of the porous nature of the films, such as the enhanced, spatially controlled adsorption of proteins, the topographical cues influencing cellular behavior, and the enhanced permeability which is essential both in vitro and in vivo. Finally, this review highlights the elegant use of honeycomb films as drug-eluting biomaterials or as reservoirs for distinct drug delivery systems. STATEMENT OF SIGNIFICANCE Combining biocompatible surfaces and 3D nano/microscale topographies, such as pores or grooves, is an effective strategy for manufacturing tissue engineering scaffolds. The breath figure (BF) method is an easy technique to prepare cell culture substrates with an organized, honeycomb-like porous surface. These surface features make these scaffolds valuable for studying how the cells interact with the biomaterials. Their unique surface topography can also resemble the natural environment of the tissues in the human body. For that reason, numerous studies, using different cell types, have shown that honeycomb films can constitute high performance substrates for cell culture. Here, we review those studies, we highlight the advantages of honeycomb films in tissue engineering and we discuss their potential as unique drug-eluting systems.
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Affiliation(s)
- Maria Teresa Calejo
- BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland.
| | - Tanja Ilmarinen
- BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Heli Skottman
- BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Minna Kellomäki
- BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland; BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
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159
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Damania A, Kumar A, Teotia AK, Kimura H, Kamihira M, Ijima H, Sarin SK, Kumar A. Decellularized Liver Matrix-Modified Cryogel Scaffolds as Potential Hepatocyte Carriers in Bioartificial Liver Support Systems and Implantable Liver Constructs. ACS APPLIED MATERIALS & INTERFACES 2018; 10:114-126. [PMID: 29210278 DOI: 10.1021/acsami.7b13727] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Recent progress in the use of decellularized organ scaffolds as regenerative matrices for tissue engineering holds great promise in addressing the issue of donor organ shortage. Decellularization preserves the mechanical integrity, composition, and microvasculature critical for zonation of hepatocytes in the liver. Earlier studies have reported the possibility of repopulating decellularized matrices with hepatic cell lines or stem cells to improve liver regeneration. In this work, we study the versatility of the decellularized liver matrix as a substrate coating of three-dimensional cryogel scaffolds. The coated cryogels were analyzed for their ability to maintain hepatic cell growth and functionality in vitro, which was found to be significantly better than the uncoated cryogel scaffolds. The decellularized liver matrix-coated cryogel scaffolds were evaluated for their potential application as a cell-loaded bioreactor for bioartificial liver support and as an implantable liver construct. Extracorporeal connection of the coated cryogel bioreactor to a liver failure model showed improvement in liver function parameters. Additionally, offline clinical evaluation of the bioreactor using patient-derived liver failure plasma showed its efficacy in improving liver failure conditions by approximately 30-60%. Furthermore, implantation of the decellularized matrix-coated cryogel showed complete integration with the native tissue as confirmed by hematoxylin and eosin staining of tissue sections. HepG2 cells and primary human hepatocytes seeded in the coated cryogel scaffolds implanted in the liver failure model maintained functionality in terms of albumin synthesis and cytochrome P450 activity post 2 weeks of implantation. In addition, a 20-60% improvement in liver function parameters was observed post implantation. These results, put together, suggest a possibility of using the decellularized matrix-coated cryogel scaffolds for liver tissue engineering applications.
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Affiliation(s)
- Apeksha Damania
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur , Kanpur-208016 Uttar Pradesh, India
| | - Anupam Kumar
- Institute of Liver and Biliary Sciences , Vasant Kunj, New Delhi 110070, India
| | - Arun K Teotia
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur , Kanpur-208016 Uttar Pradesh, India
| | - Haruna Kimura
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University , Fukuoka 8190395, Japan
| | - Masamichi Kamihira
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University , Fukuoka 8190395, Japan
| | - Hiroyuki Ijima
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University , Fukuoka 8190395, Japan
| | - Shiv Kumar Sarin
- Institute of Liver and Biliary Sciences , Vasant Kunj, New Delhi 110070, India
| | - Ashok Kumar
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur , Kanpur-208016 Uttar Pradesh, India
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160
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Chen YW, Hsieh SC, Yang YC, Hsu SH, Kung ML, Lin PY, Hsieh HH, Lin CH, Tang CM, Hung HS. Functional engineered mesenchymal stem cells with fibronectin-gold composite coated catheters for vascular tissue regeneration. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:699-711. [PMID: 29325741 DOI: 10.1016/j.nano.2017.12.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 11/20/2017] [Accepted: 12/29/2017] [Indexed: 11/30/2022]
Abstract
Vascularization of engineered tissues remains one of the key problems. Here, we described a novel approach to promote vascularization of engineered tissues using fibronectin (FN) incorporated gold nanoparticles (AuNP) coated onto catheters with mesenchymal stem cells (MSCs) for tissue engineering. We found that the FN-AuNP composite with 43.5 ppm of AuNP exhibited better biomechanical properties and thermal stability than pure FN. FN-AuNP composites promoted MSC proliferation and increased the biocompatibility. Mechanistically, vascular endothelial growth factor (VEGF) promoted MSC migration on FN-AuNP through the endothelial oxide synthase (eNOS)/metalloproteinase (MMP) signaling pathway. Vascular femoral artery tissues isolated from the implanted FN-AuNP-coated catheters with MSCs expressed substantial CD31 and alpha-smooth muscle actin (α-SMA), displayed higher antithrombotic activity, as well as better endothelialization ability than those coated with all other materials. These data suggested that the implantation of FN-AuNP-coated catheter with MSCs could be a novel strategy for vascular biomaterials applications.
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Affiliation(s)
- Yun-Wen Chen
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Shu-Chen Hsieh
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C; Center for Stem Cell Research, Kaohsiung Medical University, Kaohsiung, Taiwan, R.O.C
| | - Yi-Chin Yang
- Department of Neurosurgery, Taichung Veterans General Hospital, Taichung, Taiwan, R.O.C
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, R.O.C
| | - Mei-Lang Kung
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C
| | - Pei-Ying Lin
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C
| | - Hsien-Hsu Hsieh
- Blood Bank, Taichung Veterans General Hospital, Taichung, Taiwan, R. O. C
| | - Ching-Hao Lin
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan, R.O.C
| | - Cheng-Ming Tang
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan, R.O.C
| | - Huey-Shan Hung
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan, R.O.C; Translational Medicine Research, China Medical University Hospital, Taichung, Taiwan, R.O.C.
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161
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Jafarkhani M, Salehi Z, Kowsari-Esfahan R, Shokrgozar MA, Rezaa Mohammadi M, Rajadas J, Mozafari M. Strategies for directing cells into building functional hearts and parts. Biomater Sci 2018; 6:1664-1690. [DOI: 10.1039/c7bm01176h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review presents the current state-of-the-art, emerging directions and future trends to direct cells for building functional heart parts.
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Affiliation(s)
- Mahboubeh Jafarkhani
- School of Chemical Engineering
- College of Engineering
- University of Tehran
- Iran
- Center for Nanomedicine and Theranostics
| | - Zeinab Salehi
- School of Chemical Engineering
- College of Engineering
- University of Tehran
- Iran
| | | | | | - M. Rezaa Mohammadi
- Biomaterials and Advanced Drug Delivery Laboratory
- Stanford University School of Medicine
- Palo Alto
- USA
- Division of Cardiovascular Medicine
| | - Jayakumar Rajadas
- Biomaterials and Advanced Drug Delivery Laboratory
- Stanford University School of Medicine
- Palo Alto
- USA
- Division of Cardiovascular Medicine
| | - Masoud Mozafari
- Bioengineering Research Group
- Nanotechnology and Advanced Materials Department
- Materials and Energy Research Center (MERC)
- Tehran
- Iran
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162
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Fibrin-Based Biomaterial Applications in Tissue Engineering and Regenerative Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1064:253-261. [DOI: 10.1007/978-981-13-0445-3_16] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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163
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Wang X, Schröder HC, Müller WEG. Amorphous polyphosphate, a smart bioinspired nano-/bio-material for bone and cartilage regeneration: towards a new paradigm in tissue engineering. J Mater Chem B 2018; 6:2385-2412. [DOI: 10.1039/c8tb00241j] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Physiological amorphous polyphosphate nano/micro-particles, injectable and implantable, attract and stimulate MSCs into implants for tissue regeneration.
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Affiliation(s)
- Xiaohong Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry
- University Medical Center of the Johannes Gutenberg University
- 55128 Mainz
- Germany
| | - Heinz C. Schröder
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry
- University Medical Center of the Johannes Gutenberg University
- 55128 Mainz
- Germany
| | - Werner E. G. Müller
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry
- University Medical Center of the Johannes Gutenberg University
- 55128 Mainz
- Germany
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164
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Ali Z, Islam A, Sherrell P, Le-Moine M, Lolas G, Syrigos K, Rafat M, Jensen LD. Adjustable delivery of pro-angiogenic FGF-2 by collagen-alginate microspheres. Biol Open 2018; 7:bio.027060. [PMID: 29449216 PMCID: PMC5898261 DOI: 10.1242/bio.027060] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Therapeutic induction of blood vessel growth (angiogenesis) in ischemic tissues holds great potential for treatment of myocardial infarction and stroke. Achieving sustained angiogenesis and vascular maturation has, however, been highly challenging. Here, we demonstrate that alginate:collagen hydrogels containing therapeutic, pro-angiogenic FGF-2, and formulated as microspheres, is a promising and clinically relevant vehicle for therapeutic angiogenesis. By titrating the amount of readily dissolvable and degradable collagen with more slowly degradable alginate in the hydrogel mixture, the degradation rates of the biomaterial controlling the release kinetics of embedded pro-angiogenic FGF-2 can be adjusted. Furthermore, we elaborate a microsphere synthesis protocol allowing accurate control over sphere size, also a critical determinant of degradation/release rate. As expected, alginate:collagen microspheres were completely biocompatible and did not cause any adverse reactions when injected in mice. Importantly, the amount of pro-angiogenic FGF-2 released from such microspheres led to robust induction of angiogenesis in zebrafish embryos similar to that achieved by injecting FGF-2-releasing cells. These findings highlight the use of microspheres constructed from alginate:collagen hydrogels as a promising and clinically relevant delivery system for pro-angiogenic therapy. Summary: The development of alginate:collagen composite hydrogel microspheres of adjustable size and degradation speed is described as a new platform for delivery of pro-angiogenic FGF-2 or pro-angiogenic cells.
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Affiliation(s)
- Zaheer Ali
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
| | - Anik Islam
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
| | - Peter Sherrell
- Department of Materials, Faculty of Engineering, Imperial College London, London, UK
| | - Mark Le-Moine
- Department of Biomedical Engineering, Linkoping University, Linköping, Sweden
| | - Georgios Lolas
- Oncology Unit, 3rd Department of Medicine, “Sotiria” General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Syrigos
- Oncology Unit, 3rd Department of Medicine, “Sotiria” General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Mehrdad Rafat
- Department of Biomedical Engineering, Linkoping University, Linköping, Sweden
| | - Lasse D. Jensen
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
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165
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Kargozar S, Hamzehlou S, Baino F. Potential of Bioactive Glasses for Cardiac and Pulmonary Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E1429. [PMID: 29244726 PMCID: PMC5744364 DOI: 10.3390/ma10121429] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 01/11/2023]
Abstract
Repair and regeneration of disorders affecting cardiac and pulmonary tissues through tissue-engineering-based approaches is currently of particular interest. On this matter, different families of bioactive glasses (BGs) have recently been given much consideration with respect to treating refractory diseases of these tissues, such as myocardial infarction. The inherent properties of BGs, including their ability to bond to hard and soft tissues, to stimulate angiogenesis, and to elicit antimicrobial effects, along with their excellent biocompatibility, support these newly proposed strategies. Moreover, BGs can also act as a bioactive reinforcing phase to finely tune the mechanical properties of polymer-based constructs used to repair the damaged cardiac and pulmonary tissues. In the present study, we evaluated the potential of different forms of BGs, alone or in combination with other materials (e.g., polymers), in regards to repair and regenerate injured tissues of cardiac and pulmonary systems.
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Affiliation(s)
- Saeid Kargozar
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad 917794-8564, Iran.
| | - Sepideh Hamzehlou
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran 14155-6447, Iran.
| | - Francesco Baino
- Institute of Materials Physics and Engineering, Department of Applied Science and Technology (DISAT), Politecnico di Torino, 10129 Torino, Italy.
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166
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Fibrin-Enhanced Canonical Wnt Signaling Directs Plasminogen Expression in Cementoblasts. Int J Mol Sci 2017; 18:ijms18112380. [PMID: 29120400 PMCID: PMC5713349 DOI: 10.3390/ijms18112380] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/06/2017] [Accepted: 11/07/2017] [Indexed: 11/17/2022] Open
Abstract
Cementum is a mineralized layer on the tooth's root surface and facilitates the biomechanical anchoring of fibrous connective tissues as a part of tooth-supportive complexes. Previously, we observed that OCCM30 cementoblasts cultured on fibrin matrices underwent apoptosis due to fibrin degradation through the expression of proteases. Here, we demonstrated that OCCM30 on fibrin matrices (OCCM30-fibrin) enhanced canonical Wnt signaling, which directed to plasminogen expression. The OCCM30-fibrin showed higher levels of Wnt3a expression, nuclear translocation of β-catenin, and T-cell factor (TCF) optimal motif (TOP) reporter activity than the cells on tissue culture dishes (OCCM30-TCD), indicating that the OCCM30-fibrin enhanced canonical Wnt/β-catenin signaling. Also, OCCM30-fibrin expressed biomineralization-associated markers at higher levels than OCCM30-TCD, of which levels were further increased with LiCl, a Wnt signaling activator. The OCCM30 cementoblasts simultaneously showed that high levels of plasminogen, a critical component of fibrinolysis, were expressed in the OCCM30-fibrin. Activation of canonical Wnt signaling with LiCl treatment or with forced lymphoid enhancer factor 1 (LEF1)-expression increased the expression of plasminogen. On the contrary, the inhibition of canonical Wnt signaling with siRNAs against Wnt3a or β-catenin abrogated fibrin-enhanced plasminogen expression. Furthermore, there are three conserved putative response elements for the LEF1/β-catenin complex in the plasminogen proximal promoter regions (-900 to +54). Site-directed mutations and chromatin immunoprecipitation indicated that canonical Wnt signaling directed plasminogen expression. Taken together, this study suggests that fibrin-based materials can modulate functional periodontal formations in controlling cementoblast differentiation and fibrin degradation.
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167
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Malikmammadov E, Tanir TE, Kiziltay A, Hasirci V, Hasirci N. PCL and PCL-based materials in biomedical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 29:863-893. [PMID: 29053081 DOI: 10.1080/09205063.2017.1394711] [Citation(s) in RCA: 376] [Impact Index Per Article: 53.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Biodegradable polymers have met with an increasing demand in medical usage over the last decades. One of such polymers is poly(ε-caprolactone) (PCL), which is a polyester that has been widely used in tissue engineering field for its availability, relatively inexpensive price and suitability for modification. Its chemical and biological properties, physicochemical state, degradability and mechanical strength can be adjusted, and therefore, it can be used under harsh mechanical, physical and chemical conditions without significant loss of its properties. Degradation time of PCL is quite long, thus it is used mainly in the replacement of hard tissues in the body where healing also takes an extended period of time. It is also used at load-bearing tissues of the body by enhancing its stiffness. However, due to its tailorability, use of PCL is not restricted to one type of tissue and it can be extended to engineering of soft tissues by decreasing its molecular weight and degradation time. This review outlines the basic properties of PCL, its composites, blends and copolymers. We report on various techniques for the production of different forms, and provide examples of medical applications such as tissue engineering and drug delivery systems covering the studies performed in the last decades.
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Affiliation(s)
- Elbay Malikmammadov
- a BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering , Middle East Technical University , Ankara , Turkey.,b Graduate Department of Micro and Nanotechnology, Graduate School of Natural and Applied Sciences , Middle East Technical University , Ankara , Turkey
| | - Tugba Endogan Tanir
- a BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering , Middle East Technical University , Ankara , Turkey.,c Central Laboratory , Middle East Technical University , Ankara , Turkey
| | - Aysel Kiziltay
- a BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering , Middle East Technical University , Ankara , Turkey.,c Central Laboratory , Middle East Technical University , Ankara , Turkey
| | - Vasif Hasirci
- a BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering , Middle East Technical University , Ankara , Turkey.,b Graduate Department of Micro and Nanotechnology, Graduate School of Natural and Applied Sciences , Middle East Technical University , Ankara , Turkey.,d Department of Biological Sciences , Middle East Technical University , Ankara , Turkey
| | - Nesrin Hasirci
- a BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering , Middle East Technical University , Ankara , Turkey.,b Graduate Department of Micro and Nanotechnology, Graduate School of Natural and Applied Sciences , Middle East Technical University , Ankara , Turkey.,e Department of Chemistry , Middle East Technical University , Ankara , Turkey
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168
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Sharan J, Koul V, Dinda AK, Kharbanda OP, Lale SV, Duggal R, Mishra M, Gupta G, Singh MP. Bio-functionalization of grade V titanium alloy with type I human collagen for enhancing and promoting human periodontal fibroblast cell adhesion - an in-vitro study. Colloids Surf B Biointerfaces 2017; 161:1-9. [PMID: 29035745 DOI: 10.1016/j.colsurfb.2017.10.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 10/05/2017] [Accepted: 10/06/2017] [Indexed: 11/26/2022]
Abstract
Surface modification of medical grade V titanium alloy (Ti-6Al-4V) with biomolecules is an important and vital step for tailoring it for various biomedical applications. Present study investigates theinfluence of type I human collagen (T1HC) bio-conjugation through a three stage process. Polished grade V titanium alloy discs were functionalizedwith free OH group by means of controlled heat and alkali treatment followed by coating of 3-aminopropyltriethoxy (APTES) silane couplingagent. T1HC were bio-conjugated through 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide hydrochloride N-hydroxysuccinimide (EDCNHS)coupling reaction. At each stage, grade V titanium alloy surfaces were characterized by atomic force microscopy (AFM), scanning electronmicroscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and Xrayphotoelectron spectroscopy (XPS). FTIR and XPS studies confirms thecovalent attachment of APTES with titanium alloy surface while terminalamine groups of APTES remained free for further attachment of T1HCthrough covalent bond. Aqueous stability of bio-conjugated titanium discsat various pH and time intervals (i.e. at pH of 5.5, 6.8 and 8.0 at timeinterval of 27 and 48h) confirmed the stability of T1HC bioconjugated collagen on titanium surface. Further human periodontalfibroblast cell line (HPdlF) culture revealed enhanced adhesion on theT1HC bio-conjugated surface compared to the polystyrene and polishedgrade V titanium alloy surfaces.
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Affiliation(s)
- Jitendra Sharan
- Divison of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Veena Koul
- Centre for Biomedical Engineering, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India; Department of Biomedical Engineering, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Amit K Dinda
- Department of Pathology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Om P Kharbanda
- Divison of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi 110029, India.
| | - Shantanu V Lale
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA
| | - Ritu Duggal
- Divison of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Monu Mishra
- Physics of Energy Harvesting, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Govind Gupta
- Physics of Energy Harvesting, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Manoj P Singh
- Advanced Instrumentation Research Facility, Jawaharlal Nehru University, New Delhi 110067, India
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169
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Calcium phosphate/polyvinyl alcohol composite hydrogels: A review on the freeze-thawing synthesis approach and applications in regenerative medicine. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.08.048] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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170
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Chaudhuri R, Ramachandran M, Moharil P, Harumalani M, Jaiswal AK. Biomaterials and cells for cardiac tissue engineering: Current choices. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.121] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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171
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Woldetsadik AD, Sharma SK, Khapli S, Jagannathan R, Magzoub M. Hierarchically Porous Calcium Carbonate Scaffolds for Bone Tissue Engineering. ACS Biomater Sci Eng 2017; 3:2457-2469. [PMID: 33445303 DOI: 10.1021/acsbiomaterials.7b00301] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Hierarchically porous CaCO3 scaffolds comprised of micro- (diameter = 2.0 ± 0.3 μm) and nano-sized (diameter = 50.4 ± 14.4 nm) pores were fabricated on silicon substrates using a supercritical CO2-based process. Differentiated human THP-1 monocytes exposed to the CaCO3 scaffolds produced negligible levels of the inflammatory cytokine tumor necrosis factor-alpha (TNF-α), confirming the lack of immunogenicity of the scaffolds. Extracellular matrix (ECM) proteins, vitronectin and fibronectin, displayed enhanced adsorption to the scaffolds compared to the silicon controls. ECM protein-coated CaCO3 scaffolds promoted adhesion, growth, and proliferation of osteoblast MC3T3 cells. MC3T3 cells grown on the CaCO3 scaffolds produced substantially higher levels of transforming growth factor-beta and vascular endothelial growth factor A, which regulate osteoblast differentiation, and exhibited markedly increased alkaline phosphatase activity, a marker of early osteoblast differentiation, compared to controls. Moreover, the CaCO3 scaffolds stimulated matrix mineralization (calcium deposition), an end point of advanced osteoblast differentiation and an important biomarker for bone tissue formation. Taken together, these results demonstrate the significant potential of the hierarchically porous CaCO3 scaffolds for bone tissue engineering applications.
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Affiliation(s)
- Abiy D Woldetsadik
- Biology Program, Division of Science, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Sudhir K Sharma
- Nano and Bio Materials Laboratory, Engineering Division, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Sachin Khapli
- Nano and Bio Materials Laboratory, Engineering Division, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Ramesh Jagannathan
- Nano and Bio Materials Laboratory, Engineering Division, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Mazin Magzoub
- Biology Program, Division of Science, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
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172
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Winnacker M. Covalent polyester-biomolecule conjugates: advances in their synthesis and applications in biomedicine and nanotechnology. POLYM INT 2017. [DOI: 10.1002/pi.5459] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Malte Winnacker
- WACKER-Chair of Macromolecular Chemistry and Catalysis Research Center; Technische Universität München, Garching bei München; Germany
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173
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Wang L, Wu Y, Hu T, Guo B, Ma PX. Electrospun conductive nanofibrous scaffolds for engineering cardiac tissue and 3D bioactuators. Acta Biomater 2017; 59:68-81. [PMID: 28663141 DOI: 10.1016/j.actbio.2017.06.036] [Citation(s) in RCA: 175] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/25/2017] [Accepted: 06/26/2017] [Indexed: 11/25/2022]
Abstract
Mimicking the nanofibrous structure similar to extracellular matrix and conductivity for electrical propagation of native myocardium would be highly beneficial for cardiac tissue engineering and cardiomyocytes-based bioactuators. Herein, we developed conductive nanofibrous sheets with electrical conductivity and nanofibrous structure composed of poly(l-lactic acid) (PLA) blending with polyaniline (PANI) for cardiac tissue engineering and cardiomyocytes-based 3D bioactuators. Incorporating of varying contents of PANI from 0wt% to 3wt% into the PLA polymer, the electrospun nanofibrous sheets showed enhanced conductivity while maintaining the same fiber diameter. These PLA/PANI conductive nanofibrous sheets exhibited good cell viability and promoting effect on differentiation of H9c2 cardiomyoblasts in terms of maturation index and fusion index. Moreover, PLA/PANI nanofibrous sheets enhanced the cell-cell interaction, maturation and spontaneous beating of primary cardiomyocytes. Furthermore, the cardiomyocytes-laden PLA/PANI conductive nanofibrous sheets can form 3D bioactuators with tubular and folding shapes, and spontaneously beat with much higher frequency and displacement than that on cardiomyocytes-laden PLA nanofibrous sheets. Therefore, these PLA/PANI conductive nanofibrous sheets with conductivity and extracellular matrix like nanostructure demonstrated promising potential in cardiac tissue engineering and cardiomyocytes-based 3D bioactuators. STATEMENT OF SIGNIFICANCE Cardiomyocytes-based bioactuators have been paid more attention due to their spontaneous motion by integrating cardiomyocytes into polymer structures, but developing suitable scaffolds for bioactuators remains challenging. Electrospun nanofibrous scaffolds have been widely used in cardiac tissue engineering because they can mimic the extracellular matrix of myocardium. Developing conductive nanofibrous scaffolds by electrospinning would be beneficial for cardiomyocytes-based bioactuators, but such scaffolds have been rarely reported. This work presented a conductive nanofibrous sheet based on polylactide and polyaniline via electrospinning with tunable conductivity. These conductive nanofibrous sheets performed the ability to enhance cardiomyocytes maturation and spontaneous beating, and further formed cardiomyocytes-based 3D bioactuators with tubular and folding shapes, which indicated their great potential in cardiac tissue engineering and bioactuators applications.
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174
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Kleber C, Bruns M, Lienkamp K, Rühe J, Asplund M. An interpenetrating, microstructurable and covalently attached conducting polymer hydrogel for neural interfaces. Acta Biomater 2017; 58:365-375. [PMID: 28578108 DOI: 10.1016/j.actbio.2017.05.056] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 05/19/2017] [Accepted: 05/30/2017] [Indexed: 01/25/2023]
Abstract
This study presents a new conducting polymer hydrogel (CPH) system, consisting of the synthetic hydrogel P(DMAA-co-5%MABP-co-2,5%SSNa) and the conducting polymer (CP) poly(3,4-ethylenedioxythiophene) (PEDOT), intended as coating material for neural interfaces. The composite material can be covalently attached to the surface electrode, can be patterned by a photolithographic process to influence selected electrode sites only and forms an interpenetrating network. The hybrid material was characterized using cyclic voltammetry (CV), impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS), which confirmed a homogeneous distribution of PEDOT throughout all CPH layers. The CPH exhibited a 2,5 times higher charge storage capacity (CSC) and a reduced impedance when compared to the bare hydrogel. Electrochemical stability was proven over at least 1000 redox cycles. Non-toxicity was confirmed using an elution toxicity test together with a neuroblastoma cell-line. The described material shows great promise for surface modification of neural probes making it possible to combine the beneficial properties of the hydrogel with the excellent electronic properties necessary for high quality neural microelectrodes. STATEMENT OF SIGNIFICANCE Conductive polymer hydrogels have emerged as a promising new class of materials to functionalize electrode surfaces for enhanced neural interfaces and drug delivery. Common weaknesses of such systems are delamination from the connection surface, and the lack of suitable patterning methods for confining the gel to the selected electrode site. Various studies have reported on conductive polymer hydrogels addressing one of these challenges. In this study we present a new composite material which offers, for the first time, the unique combination of properties: it can be covalently attached to the substrate, forms an interpenetrating network, shows excellent electrical properties and can be patterned via UV-irradiation through a structured mask.
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Affiliation(s)
- Carolin Kleber
- BrainLinks-BrainTools Center, University of Freiburg, Germany; Department of Microsystems Engineering (IMTEK), University of Freiburg, Germany.
| | - Michael Bruns
- Institute for Applied Materials (IAM) and Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Karen Lienkamp
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Germany
| | - Jürgen Rühe
- BrainLinks-BrainTools Center, University of Freiburg, Germany; Department of Microsystems Engineering (IMTEK), University of Freiburg, Germany
| | - Maria Asplund
- BrainLinks-BrainTools Center, University of Freiburg, Germany; Department of Microsystems Engineering (IMTEK), University of Freiburg, Germany
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175
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Tanha S, Rafiee-Tehrani M, Abdollahi M, Vakilian S, Esmaili Z, Naraghi ZS, Seyedjafari E, Javar HA. G-CSF loaded nanofiber/nanoparticle composite coated with collagen promotes wound healing in vivo. J Biomed Mater Res A 2017; 105:2830-2842. [PMID: 28589686 DOI: 10.1002/jbm.a.36135] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 05/10/2017] [Accepted: 06/01/2017] [Indexed: 12/22/2022]
Abstract
Sustained release of functional growth factors can be considered as a beneficial methodology for wound healing. In this study, recombinant human granulocyte colony-stimulating factor (G-CSF)-loaded chitosan nanoparticles were incorporated in Poly(ε-caprolactone) (PCL) nanofibers, followed by surface coating with collagen type I. Physical and mechanical properties of the PCL nanofibers containing G-CSF loaded chitosan nanoparticles PCL/NP(G-CSF) and in vivo performance for wound healing were investigated. G-CSF structural stability was evaluated through SDS_PAGE, reversed phase (RP) HPLC and size-exclusion chromatography, as well as circular dichroism. Nanofiber/nanoparticle composite scaffold was demonstrated to have appropriate mechanical properties as a wound dresser and a sustained release of functional G-CSF. The PCL/NP(G-CSF) scaffold showed a suitable proliferation and well-adherent morphology of stem cells. In vivo study and histopathological evaluation outcome revealed that skin regeneration was dramatically accelerated under PCL/NP(G-CSF) as compared with control groups. Superior fibroblast maturation, enhanced collagen deposition and minimum inflammatory cells were also the beneficial properties of PCL/NP(G-CSF) over the commercial dressing. The synergistic effect of extracellular matrix-mimicking nanofibrous membrane and G-CSF could develop a suitable supportive substrate in order to extensive utilization for the healing of skin wounds. © 2017 Wiley Periodicals Inc. J Biomed Mater Res Part A: 105A: 2830-2842, 2017.
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Affiliation(s)
- Shima Tanha
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Morteza Rafiee-Tehrani
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohamad Abdollahi
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeid Vakilian
- Department of Nanotechnology and Tissue Engineering, Stem Cell Technology Research Center, Tehran, Iran
| | - Zahra Esmaili
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Safaei Naraghi
- Departments of Dermatology and Pathology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - Ehsan Seyedjafari
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Hamid Akbari Javar
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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176
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Zamani M, Khafaji M, Naji M, Vossoughi M, Alemzadeh I, Haghighipour N. A Biomimetic Heparinized Composite Silk-Based Vascular Scaffold with sustained Antithrombogenicity. Sci Rep 2017; 7:4455. [PMID: 28667291 PMCID: PMC5493666 DOI: 10.1038/s41598-017-04510-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 05/17/2017] [Indexed: 12/03/2022] Open
Abstract
Autologous grafts, as the gold standard for vascular bypass procedures, associated with several problems that limit their usability, so tissue engineered vessels have been the subject of an increasing number of works. Nevertheless, gathering all of the desired characteristics of vascular scaffolds in the same construct has been a big challenge for scientists. Herein, a composite silk-based vascular scaffold (CSVS) was proposed to consider all the mechanical, structural and biological requirements of a small-diameter vascular scaffold. The scaffold’s lumen composed of braided silk fiber-reinforced silk fibroin (SF) sponge covalently heparinized (H-CSVS) using Hydroxy-Iron Complexes (HICs) as linkers. The highly porous SF external layer with pores above 60 μm was obtained by lyophilization. Silk fibers were fully embedded in scaffold’s wall with no delamination. The H-CSVS exhibited much higher burst pressure and suture retention strength than native vessels while comparable elastic modulus and compliance. H-CSVSs presented milder hemolysis in vitro and significant calcification resistance in subcutaneous implantation compared to non-heparinized ones. The in vitro antithrombogenic activity was sustained for over 12 weeks. The cytocompatibility was approved using endothelial cells (ECs) and vascular smooth muscle cells (SMCs) in vitro. Therefore, H-CSVS demonstrates a promising candidate for engineering of small-diameter vessels.
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Affiliation(s)
- Masoud Zamani
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Mona Khafaji
- Institute for Nano-science and Nano-technology, Sharif University of Technology, Tehran, Iran
| | - Mohammad Naji
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Manouchehr Vossoughi
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran. .,Institute for Nano-science and Nano-technology, Sharif University of Technology, Tehran, Iran.
| | - Iran Alemzadeh
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
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177
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Wu Y, Wang L, Guo B, Ma PX. Interwoven Aligned Conductive Nanofiber Yarn/Hydrogel Composite Scaffolds for Engineered 3D Cardiac Anisotropy. ACS NANO 2017; 11:5646-5659. [PMID: 28590127 DOI: 10.1021/acsnano.7b01062] [Citation(s) in RCA: 264] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Mimicking the anisotropic cardiac structure and guiding 3D cellular orientation play a critical role in designing scaffolds for cardiac tissue regeneration. Significant advances have been achieved to control cellular alignment and elongation, but it remains an ongoing challenge for engineering 3D cardiac anisotropy using these approaches. Here, we present a 3D hybrid scaffold based on aligned conductive nanofiber yarns network (NFYs-NET, composition: polycaprolactone, silk fibroin, and carbon nanotubes) within a hydrogel shell for mimicking the native cardiac tissue structure, and further demonstrate their great potential for engineering 3D cardiac anisotropy for cardiac tissue engineering. The NFYs-NET structures are shown to control cellular orientation and enhance cardiomyocytes (CMs) maturation. 3D hybrid scaffolds were then fabricated by encapsulating NFYs-NET layers within hydrogel shell, and these 3D scaffolds performed the ability to promote aligned and elongated CMs maturation on each layer and individually control cellular orientation on different layers in a 3D environment. Furthermore, endothelialized myocardium was constructed by using this hybrid strategy via the coculture of CMs on NFYs-NET layer and endothelial cells within hydrogel shell. Therefore, these 3D hybrid scaffolds, containing NFYs-NET layer inducing cellular orientation, maturation, and anisotropy and hydrogel shell providing a suitable 3D environment for endothelialization, has great potential in engineering 3D cardiac anisotropy.
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Affiliation(s)
- Yaobin Wu
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
| | - Ling Wang
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
| | - Baolin Guo
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
| | - Peter X Ma
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
- Department of Biomedical Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
- Department of Biologic and Materials Sciences, University of Michigan , Ann Arbor, Michigan 48109, United States
- Macromolecular Science and Engineering Center, University of Michigan , Ann Arbor, Michigan 48109, United States
- Department of Materials Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
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178
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Zamuner A, Brun P, Scorzeto M, Sica G, Castagliuolo I, Dettin M. Smart biomaterials: Surfaces functionalized with proteolytically stable osteoblast-adhesive peptides. Bioact Mater 2017; 2:121-130. [PMID: 29744421 PMCID: PMC5935176 DOI: 10.1016/j.bioactmat.2017.05.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/09/2017] [Accepted: 05/09/2017] [Indexed: 02/07/2023] Open
Abstract
Engineered scaffolds for bone tissue regeneration are designed to promote cell adhesion, growth, proliferation and differentiation. Recently, covalent and selective functionalization of glass and titanium surfaces with an adhesive peptide (HVP) mapped on [351-359] sequence of human Vitronectin allowed to selectively increase osteoblast attachment and adhesion strength in in vitro assays, and to promote osseointegration in in vivo studies. For the first time to our knowledge, in this study we investigated the resistance of adhesion sequences to proteolytic digestion: HVP was completely cleaved after 5 h. In order to overcome the enzymatic degradation of the native peptide under physiological conditions we synthetized three analogues of HVP sequence. A retro-inverted peptide D-2HVP, composed of D amino acids, was completely stable in serum-containing medium. In addition, glass surfaces functionalized with D-2HVP increased human osteoblast adhesion as compared to the native peptide and maintained deposition of calcium. Interestingly, D-2HVP increased expression of IBSP, VTN and SPP1 genes as compared to HVP functionalized surfaces. Total internal reflection fluorescence microscope analysis showed cells with numerous filopodia spread on D-2HVP-functionalized surfaces. Therefore, the D-2HVP sequence is proposed as new osteoblast adhesive peptide with increased bioactivity and high proteolytic resistance.
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Affiliation(s)
- Annj Zamuner
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 9, 35131, Padova, Italy
| | - Paola Brun
- Department of Molecular Medicine, University of Padova, Via A. Gabelli 63, 35121, Padova, Italy
| | - Michele Scorzeto
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy
| | - Giuseppe Sica
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 9, 35131, Padova, Italy
| | - Ignazio Castagliuolo
- Department of Molecular Medicine, University of Padova, Via A. Gabelli 63, 35121, Padova, Italy
| | - Monica Dettin
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 9, 35131, Padova, Italy
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179
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Baki A, Rahman CV, White LJ, Scurr DJ, Qutachi O, Shakesheff KM. Surface modification of PdlLGA microspheres with gelatine methacrylate: Evaluation of adsorption, entrapment, and oxygen plasma treatment approaches. Acta Biomater 2017; 53:450-459. [PMID: 28093368 PMCID: PMC5424780 DOI: 10.1016/j.actbio.2017.01.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 01/11/2017] [Accepted: 01/12/2017] [Indexed: 11/16/2022]
Abstract
Injectable poly (dl-lactic-co-glycolic acid) (PdlLGA) microspheres are promising candidates as biodegradable controlled release carriers for drug and cell delivery applications; however, they have limited functional groups on the surface to enable dense grafting of tissue specific biocompatible molecules. In this study we have evaluated surface adsorption, entrapment and oxygen plasma treatment as three approaches to modify the surfaces of PdlLGA microspheres with gelatine methacrylate (gel-MA) as a biocompatible and photo cross-linkable macromolecule. Time of flight secondary ion mass spectroscopy (TOF SIMS) and X-ray photoelectron spectroscopy (XPS) were used to detect and quantify gel-MA on the surfaces. Fluorescent and scanning electron microscopies (SEM) were used to image the topographical changes. Human mesenchymal stem cells (hMSCs) of immortalised cell line were cultured on the surface of gel-MA modified PdlLGA microspheres and Presto-Blue assay was used to study the effect of different surface modifications on cell proliferation. Data analysis showed that the oxygen plasma treatment approach resulted in the highest density of gel-MA deposition. This study supports oxygen plasma treatment as a facile approach to modify the surface of injectable PdlLGA microspheres with macromolecules such as gel-MA to enhance proliferation rate of injected cells and potentially enable further grafting of tissue specific molecules. Statement of Significance Poly (dl lactic-co-glycolic) acid (PdlLGA) microspheres offer limited functional groups on their surface to enable proper grafting of tissue specific bioactive molecules. To overcome this limitation, previous approaches have suggested using alkaline solutions to introduce active groups to the surface; however, they may compromise surface topography and lose any potential surface patterns. Plasma polymerisation of bioactive monomers has been suggested to enhance surface biocompatibility; however, it is not applicable on low vapour pressure macromolecules such as most extracellular matrix (ECM) proteins and growth factors. This study aims to evaluate three different approaches to modify the surface of PdlLGA microspheres with gelatine-methacrylate (gel-MA) to enable further grafting of cross-linkable biomolecules without compromising the surface topography or the biocompatibility of the system.
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Affiliation(s)
- Abdulrahman Baki
- Division of Drug Delivery and Tissue Engineering, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Cheryl V Rahman
- Division of Drug Delivery and Tissue Engineering, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Lisa J White
- Division of Drug Delivery and Tissue Engineering, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - David J Scurr
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Omar Qutachi
- Division of Drug Delivery and Tissue Engineering, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Kevin M Shakesheff
- Division of Drug Delivery and Tissue Engineering, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK.
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180
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Gentile P, Ferreira AM, Callaghan JT, Miller CA, Atkinson J, Freeman C, Hatton PV. Multilayer Nanoscale Encapsulation of Biofunctional Peptides to Enhance Bone Tissue Regeneration In Vivo. Adv Healthc Mater 2017; 6. [PMID: 28169513 DOI: 10.1002/adhm.201601182] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/08/2017] [Indexed: 11/09/2022]
Abstract
Bone tissue healing is a dynamic process that is initiated by the recruitment of osteoprogenitor cells followed by their migration, proliferation, differentiation, and development of a mineralizing extracellular matrix. The work aims to manufacture a functionalized porous membrane that stimulates early events in bone healing for initiating a regenerative cascade. Layer-by-layer (LbL) assembly is proposed to modify the surface of osteoconductive electrospun meshes, based on poly(lactic-co-glycolic acid) and nanohydroxyapatite, by using poly(allylamine hydrochloride) and poly(sodium 4-styrenesulfonate) as polyelectrolytes. Molecular cues are incorporated by grafting peptide fragments into the discrete nanolayers. KRSR (lysine-arginine-serine-arginine) sequence is grafted to enhance cell adhesion and proliferation, NSPVNSKIPKACCVPTELSAI to guide bone marrow mesenchymal stem cells differentiation in osteoblasts, and FHRRIKA (phenylalanine-histidine-arginine-arginine-isoleucine-lysine-alanine) to improve mineralization matrix formation. Scanning electron microscopy, infrared spectroscopy, and X-ray photoelectron spectroscopy demonstrate the successful surface functionalization. Furthermore, the peptide incorporation enhances cellular processes, with good viability and significant increase of alkaline phosphatase activity, osteopontin, and osteocalcin. The functionalized membrane induces a favorable in vivo response after implantation for four weeks in nonhealing rat calvarial defect model. It is concluded that the multilayer nanoencapsulation of biofunctional peptides using LbL approach has significant potential as innovative manufacturing technique to improve bone regeneration in orthopedic and craniofacial medical devices.
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Affiliation(s)
- Piergiorgio Gentile
- School of Mechanical and Systems Engineering; Newcastle University; Claremont Road Newcastle upon Tyne NE1 7RU UK
| | - Ana Marina Ferreira
- School of Mechanical and Systems Engineering; Newcastle University; Claremont Road Newcastle upon Tyne NE1 7RU UK
| | - Jill T. Callaghan
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| | - Cheryl A. Miller
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| | - Joss Atkinson
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| | - Christine Freeman
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| | - Paul V. Hatton
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
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181
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Wu RX, Yin Y, He XT, Li X, Chen FM. Engineering a Cell Home for Stem Cell Homing and Accommodation. ACTA ACUST UNITED AC 2017; 1:e1700004. [PMID: 32646164 DOI: 10.1002/adbi.201700004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 02/27/2017] [Indexed: 12/14/2022]
Abstract
Distilling complexity to advance regenerative medicine from laboratory animals to humans, in situ regeneration will continue to evolve using biomaterial strategies to drive endogenous cells within the human body for therapeutic purposes; this approach avoids the need for delivering ex vivo-expanded cellular materials. Ensuring the recruitment of a significant number of reparative cells from an endogenous source to the site of interest is the first step toward achieving success. Subsequently, making the "cell home" cell-friendly by recapitulating the natural extracellular matrix (ECM) in terms of its chemistry, structure, dynamics, and function, and targeting specific aspects of the native stem cell niche (e.g., cell-ECM and cell-cell interactions) to program and steer the fates of those recruited stem cells play equally crucial roles in yielding a therapeutically regenerative solution. This review addresses the key aspects of material-guided cell homing and the engineering of novel biomaterials with desirable ECM composition, surface topography, biochemistry, and mechanical properties that can present both biochemical and physical cues required for in situ tissue regeneration. This growing body of knowledge will likely become a design basis for the development of regenerative biomaterials for, but not limited to, future in situ tissue engineering and regeneration.
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Affiliation(s)
- Rui-Xin Wu
- State Key Laboratory of Military Stomatology, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P. R. China.,National Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P.R. China
| | - Yuan Yin
- State Key Laboratory of Military Stomatology, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P. R. China.,National Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P.R. China
| | - Xiao-Tao He
- State Key Laboratory of Military Stomatology, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P. R. China.,National Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P.R. China
| | - Xuan Li
- State Key Laboratory of Military Stomatology, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P. R. China.,National Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P.R. China
| | - Fa-Ming Chen
- State Key Laboratory of Military Stomatology, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P. R. China.,National Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, P.R. China
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182
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Mohammadi Amirabad L, Massumi M, Shamsara M, Shabani I, Amari A, Mossahebi Mohammadi M, Hosseinzadeh S, Vakilian S, Steinbach SK, Khorramizadeh MR, Soleimani M, Barzin J. Enhanced Cardiac Differentiation of Human Cardiovascular Disease Patient-Specific Induced Pluripotent Stem Cells by Applying Unidirectional Electrical Pulses Using Aligned Electroactive Nanofibrous Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6849-6864. [PMID: 28116894 DOI: 10.1021/acsami.6b15271] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In the embryonic heart, electrical impulses propagate in a unidirectional manner from the sinus venosus and appear to be involved in cardiogenesis. In this work, aligned and random polyaniline/polyetersulfone (PANI/PES) nanofibrous scaffolds doped by Camphor-10-sulfonic acid (β) (CPSA) were fabricated via electrospinning and used to conduct electrical impulses in a unidirectional and multidirectional fashion, respectively. A bioreactor was subsequently engineered to apply electrical impulses to cells cultured on PANI/PES scaffolds. We established cardiovascular disease-specific induced pluripotent stem cells (CVD-iPSCs) from the fibroblasts of patients undergoing cardiothoracic surgeries. The CVD-iPSCs were seeded onto the scaffolds, cultured in cardiomyocyte-inducing factors, and exposed to electrical impulses for 1 h/day, over a 15-day time period in the bioreactor. The application of the unidirectional electrical stimulation to the cells significantly increased the number of cardiac Troponin T (cTnT+) cells in comparison to multidirectional electrical stimulation using random fibrous scaffolds. This was confirmed by real-time polymerase chain reaction for cardiac-related transcription factors (NKX2.5, GATA4, and NPPA) and a cardiac-specific structural gene (TNNT2). Here we report for the first time that applying electrical pulses in a unidirectional manner mimicking the unidirectional wave of electrical stimulation in the heart, could increase the derivation of cardiomyocytes from CVD-iPSCs.
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Affiliation(s)
- Leila Mohammadi Amirabad
- Stem Cells Department, National Institute of Genetic Engineering and Biotechnology , Tehran, Iran
- School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Mohammad Massumi
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital , Toronto, Ontario M5T 3H7, Canada
- Department of Physiology, University of Toronto , Toronto, Ontario M5S 1A8, Canada
| | - Mehdi Shamsara
- Stem Cells Department, National Institute of Genetic Engineering and Biotechnology , Tehran, Iran
| | - Iman Shabani
- Biomedical Engineering Department, Amirkabir University of Technology , Tehran, Iran
| | - Afshin Amari
- Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences , Ahvaz 61357-15794, Iran
| | | | - Simzar Hosseinzadeh
- School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences , Tehran, Iran
| | - Saeid Vakilian
- Stem Cells Biology Department, Stem Cell Technology Research Center , Tehran, Iran
| | - Sarah K Steinbach
- McEwen Centre for Regenerative Medicine, Toronto, Ontario M5G 1L7, Canada
| | - Mohammad R Khorramizadeh
- Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences , Tehran, Iran
| | - Masoud Soleimani
- Stem Cells Biology Department, Stem Cell Technology Research Center , Tehran, Iran
| | - Jalal Barzin
- Biomaterials Department, Iran Polymer and Petrochemical Institute , Tehran, Iran
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183
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Kao CW, Cheng PH, Wu PT, Wang SW, Chen IC, Cheng NC, Yang KC, Yu J. Zwitterionic poly(sulfobetaine methacrylate) hydrogels incorporated with angiogenic peptides promote differentiation of human adipose-derived stem cells. RSC Adv 2017. [DOI: 10.1039/c7ra08919h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The superhydrophilic and ultralow biofouling properties as well as the resistance to foreign-body reaction make zwitterionic polymer promising in biomedical applications.
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Affiliation(s)
- Chung-Wei Kao
- Department of Chemical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Po-Hsiu Cheng
- Department of Chemical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Po-Ting Wu
- Department of Chemical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Shih-Wen Wang
- Department of Chemical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - I.-Chun Chen
- Department of Chemical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Nai-Chen Cheng
- National Taiwan University Hospital
- Department of Surgery
- Taipei
- Taiwan
| | - Kai-Chiang Yang
- School of Dental Technology
- College of Oral Medicine
- Taipei Medical University
- Taipei
- Taiwan
| | - Jiashing Yu
- Department of Chemical Engineering
- National Taiwan University
- Taipei
- Taiwan
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184
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Li Y, Shi X, Tian L, Sun H, Wu Y, Li X, Li J, Wei Y, Han X, Zhang J, Jia X, Bai R, Jing L, Ding P, Liu H, Han D. AuNP-Collagen Matrix with Localized Stiffness for Cardiac-Tissue Engineering: Enhancing the Assembly of Intercalated Discs by β1-Integrin-Mediated Signaling. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:10230-10235. [PMID: 27723133 DOI: 10.1002/adma.201603027] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/29/2016] [Indexed: 05/14/2023]
Abstract
A schematic for the mechanism of accelerating the assembly of intercalated discs (IDs) in cardiac myocytes regulated by gold nanoparticles (AuNPs) is presented. AuNPs with local nanoscale stiffness in the substrate activate β1-integrin signaling, which mediates the activation of integrin-linked kinase (ILK) and its downstream signal kinase by stimulating expression of the transcription factors GATA4 and MEF-2c.
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Affiliation(s)
- Yi Li
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Xiaoli Shi
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Lei Tian
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Hongyu Sun
- Chengdu Military General Hospital, Chengdu, Sichuan Province, 610083, P. R. China
| | - Yujing Wu
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Xia Li
- Affiliated Hospital of Academy of Military Medical Sciences, Beijing, 100071, P. R. China
| | - Jianjun Li
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yujie Wei
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Xinxiao Han
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jiao Zhang
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Xiaowei Jia
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Rui Bai
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Limin Jing
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Peng Ding
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Huiliang Liu
- Department of Cardiology, The General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, P. R. China
| | - Dong Han
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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185
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Abstract
In this review, we focus on new approaches that could lead to the regeneration of heart muscle and the restoration of cardiac muscle function derived from newly-formed cardiomyocytes. Various strategies for the production of cardiomyocytes from embryonic stem cells, induced pluripotent stem cells, adult bone marrow stem cells and cardiac spheres from human heart biopsies are described. Pathological conditions which lead to atherosclerosis and coronary artery disease often are followed by myocardial infarction causing myocardial cell death. After cell death, there is very little self-regeneration of the cardiac muscle tissue, which is replaced by non-contractile connective tissue, thus weakening the ability of the heart muscle to contract fully and leading to heart failure. A number of experimental research approaches to stimulate heart muscle regeneration with the hope of regaining normal or near normal heart function in the damaged heart muscle have been attempted. Some of these very interesting studies have used a variety of stem cell types in combination with potential cardiogenic differentiation factors in an attempt to promote differentiation of new cardiac muscle for possible future use in the clinical treatment of patients who have suffered heart muscle damage from acute myocardial infarctions or related cardiovascular diseases. Although progress has been made in recent years relative to promoting the differentiation of cardiac muscle tissue from non-muscle cells, much work remains to be done for this technology to be used routinely in translational clinical medicine to treat patients with damaged heart muscle tissue and return such individuals to pre-heart-attack activity levels.
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Affiliation(s)
- Andrei Kochegarov
- Department of Biological and Environmental Sciences, Texas A&M University-Commerce, Commerce, Texas, USA
| | - Larry F Lemanski
- Department of Biological and Environmental Sciences, Texas A&M University-Commerce, Commerce, Texas, USA
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186
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Pascual-Gil S, Simón-Yarza T, Garbayo E, Prósper F, Blanco-Prieto MJ. Cytokine-loaded PLGA and PEG-PLGA microparticles showed similar heart regeneration in a rat myocardial infarction model. Int J Pharm 2016; 523:531-533. [PMID: 27838293 DOI: 10.1016/j.ijpharm.2016.11.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 10/11/2016] [Accepted: 11/08/2016] [Indexed: 11/16/2022]
Abstract
Neuregulin (NRG1) and fibroblast growth factor (FGF1) are well known growth factors implicated in cardiomyocyte proliferation and survival, as well as in angiogenesis, the development of adult heart and the maintenance of cardiac function. NRG1 and FGF1 have become promising therapeutic agents to treat myocardial infarction (MI) disorder. Unfortunately, clinical trials performed so far reported negative efficacy results, because growth factors are rapidly degraded and eliminated from the biological tissues once administered. In order to increase their bioavailability and favour their therapeutic effects, they have been combined with poly(lactic-co-glycolic acid) and polyethylene glycol microparticles (PLGA MPs and PEG-PLGA MPs). Here we compare both types of microparticles loaded with NRG1 or FGF1 in terms of efficacy in a rat MI model. Our results showed that intramyocardial injection of NRG1 or FGF1-loaded PLGA and PEG-PLGA MPs brought about similar improvements in the ejection fraction, angiogenesis and arteriogenesis after administration into the infarcted hearts. PEG coating did not add any effect regarding MP efficacy. Both PLGA and PEG-PLGA MPs were equally phagocyted in the heart. To our knowledge, this is the first study analysing the opsonisation process in heart tissue. The results allow us to conclude that the opsonisation process is different in heart tissue compared to blood.
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Affiliation(s)
- Simon Pascual-Gil
- Pharmacy and Pharmaceutical Technology Department, School of Pharmacy, Universidad de Navarra, Pamplona, C/Irunlarrea 1, E-31080, Spain; Instituto de Investigación Sanitaria de Navarra, IdiSNA, Pamplona, C/Irunlarrea 3, E-31008 Pamplona, Spain
| | - Teresa Simón-Yarza
- Pharmacy and Pharmaceutical Technology Department, School of Pharmacy, Universidad de Navarra, Pamplona, C/Irunlarrea 1, E-31080, Spain
| | - Elisa Garbayo
- Pharmacy and Pharmaceutical Technology Department, School of Pharmacy, Universidad de Navarra, Pamplona, C/Irunlarrea 1, E-31080, Spain; Instituto de Investigación Sanitaria de Navarra, IdiSNA, Pamplona, C/Irunlarrea 3, E-31008 Pamplona, Spain
| | - Felipe Prósper
- Instituto de Investigación Sanitaria de Navarra, IdiSNA, Pamplona, C/Irunlarrea 3, E-31008 Pamplona, Spain; Hematology Service and Area of Cell Therapy, Clínica Universidad de Navarra, Foundation for Applied Medical Research, Universidad de Navarra, Pamplona, C/Irunlarrea 1, E-31080, Spain
| | - María J Blanco-Prieto
- Pharmacy and Pharmaceutical Technology Department, School of Pharmacy, Universidad de Navarra, Pamplona, C/Irunlarrea 1, E-31080, Spain; Instituto de Investigación Sanitaria de Navarra, IdiSNA, Pamplona, C/Irunlarrea 3, E-31008 Pamplona, Spain.
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187
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Davidenko N, Schuster CF, Bax DV, Farndale RW, Hamaia S, Best SM, Cameron RE. Evaluation of cell binding to collagen and gelatin: a study of the effect of 2D and 3D architecture and surface chemistry. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:148. [PMID: 27582068 PMCID: PMC5007264 DOI: 10.1007/s10856-016-5763-9] [Citation(s) in RCA: 263] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/03/2016] [Indexed: 05/17/2023]
Abstract
Studies of cell attachment to collagen-based materials often ignore details of the binding mechanisms-be they integrin-mediated or non-specific. In this work, we have used collagen and gelatin-based substrates with different dimensional characteristics (monolayers, thin films and porous scaffolds) in order to establish the influence of composition, crosslinking (using carbodiimide) treatment and 2D or 3D architecture on integrin-mediated cell adhesion. By varying receptor expression, using cells with collagen-binding integrins (HT1080 and C2C12 L3 cell lines, expressing α2β1, and Rugli expressing α1β1) and a parent cell line C2C12 with gelatin-binding receptors (αvβ3 and α5β1), the nature of integrin binding sites was studied in order to explain the bioactivity of different protein formulations. We have shown that alteration of the chemical identity, conformation and availability of free binding motifs (GxOGER and RGD), resulting from addition of gelatin to collagen and crosslinking, have a profound effect on the ability of cells to adhere to these formulations. Carbodiimide crosslinking ablates integrin-dependent cell activity on both two-dimensional and three-dimensional architectures while the three-dimensional scaffold structure also leads to a high level of non-specific interactions remaining on three-dimensional samples even after a rigorous washing regime. This phenomenon, promoted by crosslinking, and attributed to cell entrapment, should be considered in any assessment of the biological activity of three-dimensional substrates. Spreading data confirm the importance of integrin-mediated cell engagement for further cell activity on collagen-based compositions. In this work, we provide a simple, but effective, means of deconvoluting the effects of chemistry and dimensional characteristics of a substrate, on the cell activity of protein-derived materials, which should assist in tailoring their biological properties for specific tissue engineering applications.
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Affiliation(s)
- Natalia Davidenko
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK.
| | - Carlos F Schuster
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Daniel V Bax
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Richard W Farndale
- Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, UK
| | - Samir Hamaia
- Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, UK
| | - Serena M Best
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Ruth E Cameron
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
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188
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Citartan M, Ch'ng ES, Rozhdestvensky TS, Tang TH. Aptamers as the ‘capturing’ agents in aptamer-based capture assays. Microchem J 2016. [DOI: 10.1016/j.microc.2016.04.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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189
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Effect of Polymer Concentration, Rotational Speed, and Solvent Mixture on Fiber Formation Using Forcespinning®. FIBERS 2016. [DOI: 10.3390/fib4020020] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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190
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Menasché P, Vanneaux V. Stem cells for the treatment of heart failure. Curr Res Transl Med 2016; 64:97-106. [PMID: 27316393 DOI: 10.1016/j.retram.2016.04.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 04/02/2016] [Accepted: 04/08/2016] [Indexed: 12/17/2022]
Abstract
Stem cell-based therapy is currently tested in several trials of chronic heart failure. The main question is to determine how its implementation could be extended to standard clinical practice. To answer this question, it is helpful to capitalize on the three main lessons drawn from the accumulated experience, both in the laboratory and in the clinics. Regarding the cell type, the best outcomes seem to be achieved by cells the phenotype of which closely matches that of the target tissue. This argues in favor of the use of cardiac-committed cells among which the pluripotent stem cell-derived cardiac progeny is particularly attractive. Regarding the mechanism of action, there has been a major paradigm shift whereby cells are no longer expected to structurally integrate within the recipient myocardium but rather to release biomolecules that foster endogenous repair processes. This implies to focus on early cell retention, rather than on sustained cell survival, so that the cells reside in the target tissue long enough and in sufficient amounts to deliver the factors underpinning their action. Biomaterials are here critical adjuncts to optimize this residency time. Furthermore, the paracrine hypothesis gives more flexibility for using allogeneic cells in that targeting an only transient engraftment requires to delay, and no longer to avoid, rejection, which, in turn, should simplify immunomodulation regimens. Regarding manufacturing, a broad dissemination of cardiac cell therapy requires the development of automated systems allowing to yield highly reproducible cell products. This further emphasizes the interest of allogeneic cells because of their suitability for industrially-relevant and cost-effective scale-up and quality control procedures. At the end, definite confirmation that the effects of cells can be recapitulated by the factors they secrete could lead to acellular therapies whereby factors alone (possibly clustered in extracellular vesicles) would be delivered to the patient. The production process of these cell-derived biologics would then be closer to that of a pharmaceutical compound, which could streamline the manufacturing and regulatory paths and thereby facilitate an expended clinical use.
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Affiliation(s)
- P Menasché
- Department of Cardiovascular Surgery, Hôpital Européen Georges Pompidou, 20, rue Leblanc, 75015 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, 75010 Paris, France; INSERM U 970, 75010 Paris, France.
| | - V Vanneaux
- INSERM UMR1160, Institut Universitaire d'Hématologie, 75475 Paris cedex 10, France; Assistance publique-Hôpitaux de Paris, Unité de thérapie cellulaire et CIC de Biothérapies, Hôpital Saint-Louis, 75475 Paris cedex 10, France
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191
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Quijano LM, Lynch KM, Allan CH, Badylak SF, Ahsan T. Looking Ahead to Engineering Epimorphic Regeneration of a Human Digit or Limb. TISSUE ENGINEERING. PART B, REVIEWS 2016; 22:251-62. [PMID: 26603349 PMCID: PMC4892205 DOI: 10.1089/ten.teb.2015.0401] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 11/24/2015] [Indexed: 01/08/2023]
Abstract
Approximately 2 million people have had limb amputations in the United States due to disease or injury, with more than 185,000 new amputations every year. The ability to promote epimorphic regeneration, or the regrowth of a biologically based digit or limb, would radically change the prognosis for amputees. This ambitious goal includes the regrowth of a large number of tissues that need to be properly assembled and patterned to create a fully functional structure. We have yet to even identify, let alone address, all the obstacles along the extended progression that limit epimorphic regeneration in humans. This review aims to present introductory fundamentals in epimorphic regeneration to facilitate design and conduct of research from a tissue engineering and regenerative medicine perspective. We describe the clinical scenario of human digit healing, featuring published reports of regenerative potential. We then broadly delineate the processes of epimorphic regeneration in nonmammalian systems and describe a few mammalian regeneration models. We give particular focus to the murine digit tip, which allows for comparative studies of regeneration-competent and regeneration-incompetent outcomes in the same animal. Finally, we describe a few forward-thinking opportunities for promoting epimorphic regeneration in humans.
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Affiliation(s)
- Lina M. Quijano
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana
| | - Kristen M. Lynch
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana
| | - Christopher H. Allan
- Department of Orthopedics and Sports Medicine, University of Washington, Seattle, Washington
| | - Stephen F. Badylak
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Tabassum Ahsan
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana
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192
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Chen W, Zhang Q, Luk BT, Fang RH, Liu Y, Gao W, Zhang L. Coating nanofiber scaffolds with beta cell membrane to promote cell proliferation and function. NANOSCALE 2016; 8:10364-70. [PMID: 27139582 PMCID: PMC4866884 DOI: 10.1039/c6nr00535g] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The cell membrane cloaking technique has emerged as an intriguing strategy in nanomaterial functionalization. Coating synthetic nanostructures with natural cell membranes bestows the nanostructures with unique cell surface antigens and functions. Previous studies have focused primarily on development of cell membrane-coated spherical nanoparticles and the uses thereof. Herein, we attempt to extend the cell membrane cloaking technique to nanofibers, a class of functional nanomaterials that are drastically different from nanoparticles in terms of dimensional and mechanophysical characteristics. Using pancreatic beta cells as a model cell line, we demonstrate successful preparation of cell membrane-coated nanofibers and validate that the modified nanofibers possess an antigenic exterior closely resembling that of the source beta cells. When such nanofiber scaffolds are used to culture beta cells, both cell proliferation rate and function are significantly enhanced. Specifically, glucose-dependent insulin secretion from the cells is increased by near five-fold compared with the same beta cells cultured in regular, unmodified nanofiber scaffolds. Overall, coating cell membranes onto nanofibers could add another dimension of flexibility and controllability in harnessing cell membrane functions and offer new opportunities for innovative applications.
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Affiliation(s)
- Wansong Chen
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA.
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193
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Menasché P. The future of stem cells: Should we keep the "stem" and skip the "cells"? J Thorac Cardiovasc Surg 2016; 152:345-9. [PMID: 27021156 DOI: 10.1016/j.jtcvs.2016.02.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 02/23/2016] [Indexed: 11/29/2022]
Abstract
There is accumulating evidence that the cardioprotective effects of stem cells are predominantly mediated by the release of a blend of factors, possibly clustered into extracellular vesicles, which harness endogenous repair pathways. The clinical translation of this concept requires the identification of the cell-secreted signaling biomolecules and an appropriate transfer method. The study by Wei and colleagues has addressed these 2 requirements by showing that the epicardial delivery of a collagen patch loaded with the cardiokine follistatin-like 1 improved left ventricular function in animal models of myocardial infarction. Beyond the choice of the factor and its vehicle, these data may open a new therapeutic path whereby the functionalization of biomaterials by bioactive compounds could successfully substitute for the current cell transplantation-based strategy.
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Affiliation(s)
- Philippe Menasché
- Department of Cardiovascular Surgery, Hôpital Européen Georges Pompidou, University Paris Descartes, Sorbonne Paris Cité; and INSERM U 970, Paris, France.
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194
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Development of Synthetic and Natural Materials for Tissue Engineering Applications Using Adipose Stem Cells. Stem Cells Int 2016; 2016:5786257. [PMID: 26977158 PMCID: PMC4764745 DOI: 10.1155/2016/5786257] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 01/09/2016] [Accepted: 01/12/2016] [Indexed: 12/12/2022] Open
Abstract
Adipose stem cells have prominent implications in tissue regeneration due to their abundance and relative ease of harvest from adipose tissue and their abilities to differentiate into mature cells of various tissue lineages and secrete various growth cytokines. Development of tissue engineering techniques in combination with various carrier scaffolds and adipose stem cells offers great potential in overcoming the existing limitations constraining classical approaches used in plastic and reconstructive surgery. However, as most tissue engineering techniques are new and highly experimental, there are still many practical challenges that must be overcome before laboratory research can lead to large-scale clinical applications. Tissue engineering is currently a growing field of medical research; in this review, we will discuss the progress in research on biomaterials and scaffolds for tissue engineering applications using adipose stem cells.
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195
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Rambhia KJ, Ma PX. Controlled drug release for tissue engineering. J Control Release 2015; 219:119-128. [PMID: 26325405 DOI: 10.1016/j.jconrel.2015.08.049] [Citation(s) in RCA: 146] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 08/23/2015] [Accepted: 08/25/2015] [Indexed: 11/19/2022]
Abstract
Tissue engineering is often referred to as a three-pronged discipline, with each prong corresponding to 1) a 3D material matrix (scaffold), 2) drugs that act on molecular signaling, and 3) regenerative living cells. Herein we focus on reviewing advances in controlled release of drugs from tissue engineering platforms. This review addresses advances in hydrogels and porous scaffolds that are synthesized from natural materials and synthetic polymers for the purposes of controlled release in tissue engineering. We pay special attention to efforts to reduce the burst release effect and to provide sustained and long-term release. Finally, novel approaches to controlled release are described, including devices that allow for pulsatile and sequential delivery. In addition to recent advances, limitations of current approaches and areas of further research are discussed.
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Affiliation(s)
- Kunal J Rambhia
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Peter X Ma
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biologic and Materials Sciences, 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.
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