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Zhou X, Castro NJ, Zhu W, Cui H, Aliabouzar M, Sarkar K, Zhang LG. Improved Human Bone Marrow Mesenchymal Stem Cell Osteogenesis in 3D Bioprinted Tissue Scaffolds with Low Intensity Pulsed Ultrasound Stimulation. Sci Rep 2016; 6:32876. [PMID: 27597635 PMCID: PMC5011779 DOI: 10.1038/srep32876] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 08/16/2016] [Indexed: 12/14/2022] Open
Abstract
3D printing and ultrasound techniques are showing great promise in the evolution of human musculoskeletal tissue repair and regeneration medicine. The uniqueness of the present study was to combine low intensity pulsed ultrasound (LIPUS) and advanced 3D printing techniques to synergistically improve growth and osteogenic differentiation of human mesenchymal stem cells (MSC). Specifically, polyethylene glycol diacrylate bioinks containing cell adhesive Arginine-Glycine-Aspartic acid-Serene (RGDS) peptide and/or nanocrystalline hydroxyapatite (nHA) were used to fabricate 3D scaffolds with different geometric patterns via novel table-top stereolithography 3D printer. The resultant scaffolds provide a highly porous and interconnected 3D environment to support cell proliferation. Scaffolds with small square pores were determined to be the optimal geometric pattern for MSC attachment and growth. The optimal LIPUS working parameters were determined to be 1.5 MHz, 20% duty cycle with 150 mW/cm(2) intensity. Results demonstrated that RGDS peptide and nHA containing 3D printed scaffolds under LIPUS treatment can greatly promote MSC proliferation, alkaline phosphatase activity, calcium deposition and total protein content. These results illustrate the effectiveness of the combination of LIPUS and biomimetic 3D printing scaffolds as a valuable combinatorial tool for improved MSC function, thus make them promising for future clinical and various regenerative medicine application.
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Affiliation(s)
- Xuan Zhou
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, USA
| | - Nathan J. Castro
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, USA
| | - Wei Zhu
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, USA
| | - Haitao Cui
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, USA
| | - Mitra Aliabouzar
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, USA
| | - Kausik Sarkar
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, USA
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, USA
- Department of Biomedical Engineering, The George Washington University, Washington DC 20052, USA
- Department of Medicine, The George Washington University, Washington DC 20052, USA
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Oprych KM, Whitby RLD, Mikhalovsky SV, Tomlins P, Adu J. Repairing Peripheral Nerves: Is there a Role for Carbon Nanotubes? Adv Healthc Mater 2016; 5:1253-71. [PMID: 27027923 DOI: 10.1002/adhm.201500864] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 01/10/2016] [Indexed: 12/16/2022]
Abstract
Peripheral nerve injury continues to be a major global health problem that can result in debilitating neurological deficits and neuropathic pain. Current state-of-the-art treatment involves reforming the damaged nerve pathway using a nerve autograft. Engineered nerve repair conduits can provide an alternative to the nerve autograft avoiding the inevitable tissue damage caused at the graft donor site. Commercially available nerve repair conduits are currently only considered suitable for repairing small nerve lesions; the design and performance of engineered conduits requires significant improvements to enable their use for repairing larger nerve defects. Carbon nanotubes (CNTs) are an emerging novel material for biomedical applications currently being developed for a range of therapeutic technologies including scaffolds for engineering and interfacing with neurological tissues. CNTs possess a unique set of physicochemical properties that could be useful within nerve repair conduits. This progress report aims to evaluate and consolidate the current literature pertinent to CNTs as a biomaterial for supporting peripheral nerve regeneration. The report is presented in the context of the state-of-the-art in nerve repair conduit design; outlining how CNTs may enhance the performance of next generation peripheral nerve repair conduits.
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Affiliation(s)
- Karen M. Oprych
- Department of Brain, Repair and Rehabilitation; Institute of Neurology; University College London; Queen Square London WC1N 3BG UK
| | | | - Sergey V. Mikhalovsky
- School of Engineering; Nazarbayev University; Astana 010000 Kazakhstan
- School of Pharmacy and Biomolecular Sciences; University of Brighton; Brighton BN2 4GJ UK
| | | | - Jimi Adu
- School of Pharmacy and Biomolecular Science; University of Brighton; Brighton BN2 4GJ UK
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Zhu W, Holmes B, Glazer RI, Zhang LG. 3D printed nanocomposite matrix for the study of breast cancer bone metastasis. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 12:69-79. [PMID: 26472048 DOI: 10.1016/j.nano.2015.09.010] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 08/04/2015] [Accepted: 09/23/2015] [Indexed: 12/21/2022]
Abstract
Bone is one of the most common metastatic sites of breast cancer, but the underlying mechanisms remain unclear, in part due to an absence of advanced platforms for cancer culture and study that mimic the bone microenvironment. In the present study, we integrated a novel stereolithography-based 3D printer and a unique 3D printed nano-ink consisting of hydroxyapatite nanoparticles suspended in hydrogel to create a biomimetic bone-specific environment for evaluating breast cancer bone invasion. Breast cancer cells cultured in a geometrically optimized matrix exhibited spheroid morphology and migratory characteristics. Co-culture of tumor cells with bone marrow mesenchymal stem cells increased the formation of spheroid clusters. The 3D matrix also allowed for higher drug resistance of breast cancer cells than 2D culture. These results validate that our 3D bone matrix can mimic tumor bone microenvironments, suggesting that it can serve as a tool for studying metastasis and assessing drug sensitivity. From the Clinical Editor: Cancer remains a major cause of mortality for patients in the clinical setting. For breast cancer, bone is one of the most common metastatic sites. In this intriguing article, the authors developed a bone-like environment using 3D printing technology to investigate the underlying biology of bone metastasis. Their results would also allow a new model for other researchers who work on cancer to use.
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Affiliation(s)
- Wei Zhu
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA
| | - Benjamin Holmes
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA
| | - Robert I Glazer
- Department of Oncology, and Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA; Department of Medicine, The George Washington University, Washington, DC, USA; Department of Biomedical Engineering, The George Washington University, Washington, DC, USA.
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Wu Y, Feng S, Zan X, Lin Y, Wang Q. Aligned Electroactive TMV Nanofibers as Enabling Scaffold for Neural Tissue Engineering. Biomacromolecules 2015; 16:3466-72. [DOI: 10.1021/acs.biomac.5b00884] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yehong Wu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Sheng Feng
- Department
of Chemistry and Biochemistry, University of South Carolina, 631
Sumter Street, Columbia, South Carolina 29208, United States
| | - Xingjie Zan
- Department
of Chemistry and Biochemistry, University of South Carolina, 631
Sumter Street, Columbia, South Carolina 29208, United States
| | - Yuan Lin
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Qian Wang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- Department
of Chemistry and Biochemistry, University of South Carolina, 631
Sumter Street, Columbia, South Carolina 29208, United States
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Zhu W, Castro NJ, Cheng X, Keidar M, Zhang LG. Cold Atmospheric Plasma Modified Electrospun Scaffolds with Embedded Microspheres for Improved Cartilage Regeneration. PLoS One 2015. [PMID: 26222527 PMCID: PMC4519315 DOI: 10.1371/journal.pone.0134729] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Articular cartilage is prone to degeneration and possesses extremely poor self-healing capacity due to inherent low cell density and the absence of a vasculature network. Tissue engineered cartilage scaffolds show promise for cartilage repair. However, there still remains a lack of ideal biomimetic tissue scaffolds which effectively stimulate cartilage regeneration with appropriate functional properties. Therefore, the objective of this study is to develop a novel biomimetic and bioactive electrospun cartilage substitute by integrating cold atmospheric plasma (CAP) treatment with sustained growth factor delivery microspheres. Specifically, CAP was applied to a poly(ε-caprolactone) electrospun scaffold with homogeneously distributed bioactive factors (transforming growth factor-β1 and bovine serum albumin) loaded poly(lactic-co-glycolic) acid microspheres. We have shown that CAP treatment renders electrospun scaffolds more hydrophilic thus facilitating vitronectin adsorption. More importantly, our results demonstrate, for the first time, CAP and microspheres can synergistically enhance stem cell growth as well as improve chondrogenic differentiation of human marrow-derived mesenchymal stem cells (such as increased glycosaminoglycan, type II collagen, and total collagen production). Furthermore, CAP can substantially enhance 3D cell infiltration (over two-fold increase in infiltration depth after 1 day of culture) in the scaffolds. By integrating CAP, sustained bioactive factor loaded microspheres, and electrospinning, we have fabricated a promising bioactive scaffold for cartilage regeneration.
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Affiliation(s)
- Wei Zhu
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, United States of America
| | - Nathan J. Castro
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, United States of America
| | - Xiaoqian Cheng
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, United States of America
| | - Michael Keidar
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, United States of America
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, United States of America
- Department of Medicine, The George Washington University, Washington, District of Columbia, United States of America
- * E-mail:
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Zhu W, Masood F, O'Brien J, Zhang LG. Highly aligned nanocomposite scaffolds by electrospinning and electrospraying for neural tissue regeneration. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 11:693-704. [DOI: 10.1016/j.nano.2014.12.001] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 10/19/2014] [Accepted: 12/04/2014] [Indexed: 10/24/2022]
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O'Brien CM, Holmes B, Faucett S, Zhang LG. Three-dimensional printing of nanomaterial scaffolds for complex tissue regeneration. TISSUE ENGINEERING. PART B, REVIEWS 2015; 21:103-14. [PMID: 25084122 PMCID: PMC4322091 DOI: 10.1089/ten.teb.2014.0168] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 07/30/2014] [Indexed: 12/27/2022]
Abstract
Three-dimensional (3D) printing has recently expanded in popularity, and become the cutting edge of tissue engineering research. A growing emphasis from clinicians on patient-specific care, coupled with an increasing knowledge of cellular and biomaterial interaction, has led researchers to explore new methods that enable the greatest possible control over the arrangement of cells and bioactive nanomaterials in defined scaffold geometries. In this light, the cutting edge technology of 3D printing also enables researchers to more effectively compose multi-material and cell-laden scaffolds with less effort. In this review, we explore the current state of 3D printing with a focus on printing of nanomaterials and their effect on various complex tissue regeneration applications.
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Affiliation(s)
- Christopher M. O'Brien
- Department of Mechanical and Aerospace Engineering, School of Engineering and Applied Science, The George Washington University, Washington, District of Columbia
| | - Benjamin Holmes
- Department of Mechanical and Aerospace Engineering, School of Engineering and Applied Science, The George Washington University, Washington, District of Columbia
| | - Scott Faucett
- Department of Orthopedic Surgery, School of Medicine & Health Sciences, The George Washington University, Washington, District of Columbia
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering, School of Engineering and Applied Science, The George Washington University, Washington, District of Columbia
- Department of Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, District of Columbia
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58
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Bakhshinejad B, Sadeghizadeh M. Bacteriophages and development of nanomaterials for neural regeneration. Neural Regen Res 2015; 9:1955-8. [PMID: 25598776 PMCID: PMC4283276 DOI: 10.4103/1673-5374.145371] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2014] [Indexed: 12/26/2022] Open
Affiliation(s)
- Babak Bakhshinejad
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Majid Sadeghizadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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Hardy JG, Cornelison RC, Sukhavasi RC, Saballos RJ, Vu P, Kaplan DL, Schmidt CE. Electroactive Tissue Scaffolds with Aligned Pores as Instructive Platforms for Biomimetic Tissue Engineering. Bioengineering (Basel) 2015; 2:15-34. [PMID: 28955011 PMCID: PMC5597125 DOI: 10.3390/bioengineering2010015] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 01/12/2015] [Indexed: 01/13/2023] Open
Abstract
Tissues in the body are hierarchically structured composite materials with tissue-specific chemical and topographical properties. Here we report the preparation of tissue scaffolds with macroscopic pores generated via the dissolution of a sacrificial supramolecular polymer-based crystal template (urea) from a biodegradable polymer-based scaffold (polycaprolactone, PCL). Furthermore, we report a method of aligning the supramolecular polymer-based crystals within the PCL, and that the dissolution of the sacrificial urea yields scaffolds with macroscopic pores that are aligned over long, clinically-relevant distances (i.e., centimeter scale). The pores act as topographical cues to which rat Schwann cells respond by aligning with the long axis of the pores. Generation of an interpenetrating network of polypyrrole (PPy) and poly(styrene sulfonate) (PSS) in the scaffolds yields electroactive tissue scaffolds that allow the electrical stimulation of Schwann cells cultured on the scaffolds which increases the production of nerve growth factor (NGF).
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Affiliation(s)
- John G Hardy
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
- Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Biomedical Sciences Building JG-53, P.O. Box 116131, Gainesville, FL 32611, USA.
| | - R Chase Cornelison
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
- Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Biomedical Sciences Building JG-53, P.O. Box 116131, Gainesville, FL 32611, USA.
| | - Rushi C Sukhavasi
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
| | - Richard J Saballos
- Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Biomedical Sciences Building JG-53, P.O. Box 116131, Gainesville, FL 32611, USA.
| | - Philip Vu
- Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Biomedical Sciences Building JG-53, P.O. Box 116131, Gainesville, FL 32611, USA.
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA.
| | - Christine E Schmidt
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA.
- Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Biomedical Sciences Building JG-53, P.O. Box 116131, Gainesville, FL 32611, USA.
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