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Wang D, Zhang X, Ng KW, Rao Y, Wang C, Gharaibeh B, Lin S, Abrams G, Safran M, Cheung E, Campbell P, Weiss L, Ker DFE, Yang YP. Growth and differentiation factor-7 immobilized, mechanically strong quadrol-hexamethylene diisocyanate-methacrylic anhydride polyurethane polymer for tendon repair and regeneration. Acta Biomater 2022; 154:108-122. [PMID: 36272687 DOI: 10.1016/j.actbio.2022.10.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 10/13/2022] [Accepted: 10/13/2022] [Indexed: 12/14/2022]
Abstract
Biological and mechanical cues are both vital for biomaterial aided tendon repair and regeneration. Here, we fabricated mechanically tendon-like (0 s UV) QHM polyurethane scaffolds (Q: Quadrol, H: Hexamethylene diisocyanate; M: Methacrylic anhydride) and immobilized them with Growth and differentiation factor-7 (GDF-7) to produce mechanically strong and tenogenic scaffolds. In this study, we assessed QHM polymer cytocompatibility, amenability to fibrin-coating, immobilization and persistence of GDF-7, and capability to support GDF-7-mediated tendon differentiation in vitro as well as in vivo in mouse subcutaneous and acute rat rotator cuff tendon resection models. Cytocompatibility studies showed that QHM facilitated cell attachment, proliferation, and viability. Fibrin-coating and GDF-7 retention studies showed that mechanically tendon-like 0 s UV QHM polymer could be immobilized with GDF-7 and retained the growth factor (GF) for at least 1-week ex vivo. In vitro differentiation studies showed that GDF-7 mediated bone marrow-derived human mesenchymal stem cell (hMSC) tendon-like differentiation on 0 s UV QHM. Subcutaneous implantation of GDF-7-immobilized, fibrin-coated, QHM polymer in mice for 2 weeks demonstrated de novo formation of tendon-like tissue while implantation of GDF-7-immobilized, fibrin-coated, QHM polymer in a rat acute rotator cuff resection injury model indicated tendon-like tissue formation in situ and the absence of heterotopic ossification. Together, our work demonstrates a promising synthetic scaffold with human tendon-like biomechanical attributes as well as immobilized tenogenic GDF-7 for tendon repair and regeneration. STATEMENT OF SIGNIFICANCE: Biological activity and mechanical robustness are key features required for tendon-promoting biomaterials. While synthetic biomaterials can be mechanically robust, they often lack bioactivity. To biologically augment synthetic biomaterials, numerous drug and GF delivery strategies exist but the large tissue space within the shoulder is constantly flushed with saline during arthroscopic surgery, hindering efficacious controlled release of therapeutic molecules. Here, we coated QHM polymer (which exhibits human tendon-to-bone-like biomechanical attributes) with fibrin for GF binding. Unlike conventional drug delivery strategies, our approach utilizes immobilized GFs as opposed to released GFs for sustained, localized tissue regeneration. Our data demonstrated that GF immobilization can be broadly applied to synthetic biomaterials for enhancing bioactivity, and GDF-7-immobilized QHM exhibit high clinical translational potential for tendon repair.
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Affiliation(s)
- Dan Wang
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA; Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; Ministry of Education Key Laboratory for Regenerative Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Center for Neuromuscular Restorative Medicine, Hong Kong Science Park, Hong Kong SAR, China
| | - Xu Zhang
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ka Wai Ng
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ying Rao
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chenyang Wang
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Burhan Gharaibeh
- Department of Biological Sciences, University of Pittsburgh, 4249 Fifth Avenue, Pittsburgh, PA 15260, USA
| | - Sien Lin
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA; Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Geoffrey Abrams
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA
| | - Marc Safran
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA
| | - Emilie Cheung
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA
| | - Phil Campbell
- Engineering Research Accelerator, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA; Department of Biomedical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA; Robotics Institute, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
| | - Lee Weiss
- Robotics Institute, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA; Engineering Research Accelerator, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA; Department of Biomedical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
| | - Dai Fei Elmer Ker
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA; Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; Ministry of Education Key Laboratory for Regenerative Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Center for Neuromuscular Restorative Medicine, Hong Kong Science Park, Hong Kong SAR, China.
| | - Yunzhi Peter Yang
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA; Department of Material Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA 94305, USA; Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, CA 94305, USA.
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Wang D, Zhang X, Huang S, Liu Y, Fu BSC, Mak KKL, Blocki AM, Yung PSH, Tuan RS, Ker DFE. Engineering multi-tissue units for regenerative Medicine: Bone-tendon-muscle units of the rotator cuff. Biomaterials 2021; 272:120789. [PMID: 33845368 DOI: 10.1016/j.biomaterials.2021.120789] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 12/13/2022]
Abstract
Our body systems are comprised of numerous multi-tissue units. For the musculoskeletal system, one of the predominant functional units is comprised of bone, tendon/ligament, and muscle tissues working in tandem to facilitate locomotion. To successfully treat musculoskeletal injuries and diseases, critical consideration and thoughtful integration of clinical, biological, and engineering aspects are necessary to achieve translational bench-to-bedside research. In particular, identifying ideal biomaterial design specifications, understanding prior and recent tissue engineering advances, and judicious application of biomaterial and fabrication technologies will be crucial for addressing current clinical challenges in engineering multi-tissue units. Using rotator cuff tears as an example, insights relevant for engineering a bone-tendon-muscle multi-tissue unit are presented. This review highlights the tissue engineering strategies for musculoskeletal repair and regeneration with implications for other bone-tendon-muscle units, their derivatives, and analogous non-musculoskeletal tissue structures.
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Affiliation(s)
- Dan Wang
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR; School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR; Ministry of Education Key Laboratory for Regenerative Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR; Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR
| | - Xu Zhang
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR; School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR
| | - Shuting Huang
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR; School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR
| | - Yang Liu
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR
| | - Bruma Sai-Chuen Fu
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR; Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR
| | | | - Anna Maria Blocki
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR; School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR; Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR
| | - Patrick Shu-Hang Yung
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR; Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR
| | - Rocky S Tuan
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR; School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR
| | - Dai Fei Elmer Ker
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR; School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR; Ministry of Education Key Laboratory for Regenerative Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR; Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR.
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Ghorbani F, Li D, Zhong Z, Sahranavard M, Qian Z, Ni S, Zhang Z, Zamanian A, Yu B. Bioprinting a cell‐laden matrix for bone regeneration: A focused review. J Appl Polym Sci 2020. [DOI: 10.1002/app.49888] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Farnaz Ghorbani
- Department of Orthopedics, Shanghai Pudong Hospital Fudan University Pudong Medical Center Shanghai China
| | - Dejian Li
- Department of Orthopedics, Shanghai Pudong Hospital Fudan University Pudong Medical Center Shanghai China
| | - Zeyuan Zhong
- Department of Orthopedics, Shanghai Pudong Hospital Fudan University Pudong Medical Center Shanghai China
| | - Melika Sahranavard
- Department of Nanotechnology and Advanced Materials Materials and Energy Research Center Karaj Iran
| | - Zhi Qian
- Department of Orthopedics, Shanghai Pudong Hospital Fudan University Pudong Medical Center Shanghai China
| | - Shuo Ni
- Department of Orthopedics, Shanghai Pudong Hospital Fudan University Pudong Medical Center Shanghai China
| | - Zhenhua Zhang
- Department of Orthopedics, Shanghai Pudong Hospital Fudan University Pudong Medical Center Shanghai China
- School of Materials Science and Engineering University of Shanghai for Science and Technology Shanghai China
| | - Ali Zamanian
- Department of Nanotechnology and Advanced Materials Materials and Energy Research Center Karaj Iran
| | - Baoqing Yu
- Department of Orthopedics, Shanghai Pudong Hospital Fudan University Pudong Medical Center Shanghai China
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Li X, Liu B, Pei B, Chen J, Zhou D, Peng J, Zhang X, Jia W, Xu T. Inkjet Bioprinting of Biomaterials. Chem Rev 2020; 120:10793-10833. [PMID: 32902959 DOI: 10.1021/acs.chemrev.0c00008] [Citation(s) in RCA: 241] [Impact Index Per Article: 60.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The inkjet technique has the capability of generating droplets in the picoliter volume range, firing thousands of times in a few seconds and printing in the noncontact manner. Since its emergence, inkjet technology has been widely utilized in the publishing industry for printing of text and pictures. As the technology developed, its applications have been expanded from two-dimensional (2D) to three-dimensional (3D) and even used to fabricate components of electronic devices. At the end of the twentieth century, researchers were aware of the potential value of this technology in life sciences and tissue engineering because its picoliter-level printing unit is suitable for depositing biological components. Currently inkjet technology has been becoming a practical tool in modern medicine serving for drug development, scaffold building, and cell depositing. In this article, we first review the history, principles and different methods of developing this technology. Next, we focus on the recent achievements of inkjet printing in the biological field. Inkjet bioprinting of generic biomaterials, biomacromolecules, DNAs, and cells and their major applications are introduced in order of increasing complexity. The current limitations/challenges and corresponding solutions of this technology are also discussed. A new concept, biopixels, is put forward with a combination of the key characteristics of inkjet printing and basic biological units to bring a comprehensive view on inkjet-based bioprinting. Finally, a roadmap of the entire 3D bioprinting is depicted at the end of this review article, clearly demonstrating the past, present, and future of 3D bioprinting and our current progress in this field.
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Affiliation(s)
- Xinda Li
- Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China.,Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Boxun Liu
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Ben Pei
- Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China.,Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Jianwei Chen
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, People's Republic of China.,East China Institute of Digital Medical Engineering, Shangrao 334000, People's Republic of China
| | - Dezhi Zhou
- Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China.,Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Jiayi Peng
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, People's Republic of China
| | - Xinzhi Zhang
- Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China.,Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Wang Jia
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, People's Republic of China
| | - Tao Xu
- Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China.,Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China.,Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, People's Republic of China
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5
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Shanjani Y, Siebert SM, Ker DFE, Mercado-Pagán AE, Yang YP. Acoustic Patterning of Growth Factor for Three-Dimensional Tissue Engineering. Tissue Eng Part A 2020; 26:602-612. [PMID: 31950880 PMCID: PMC7310194 DOI: 10.1089/ten.tea.2019.0271] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 01/07/2020] [Indexed: 02/06/2023] Open
Abstract
Temporal and spatial presentations of biological cues are critical for tissue engineering. There is a great need in improving the incorporation of bioagent(s) (specifically growth factor(s) [GF(s)]) onto three-dimensional scaffolds. In this study, we developed a process to combine additive manufacturing (AM) technology with acoustic droplet ejection (ADE) technology to control GF distribution. More specifically, we implemented ADE to control the distribution of recombinant human bone morphogenetic protein-2 (rhBMP-2) onto polycaprolactone (PCL)-based tissue engineering constructs (TECs). Three substrates were used in this study: (1) succinimide-terminated PCL (PCL-N-hydroxysuccinimide [NHS]) as model material, (2) alkali-treated PCL (PCL-NaOH) as first control material, and (3) fibrin-coated PCL (PCL-Fibrin) as second control material. It was shown that our process enables a pattern of BMP-2 spots of ∼250 μm in diameter with ∼700 μm center-to-center spacing. An initial concentration of BMP-2 higher than 300 μg/L was required to retain a detectable amount of GF on the substrate after a wash with phosphate-buffered solution. However, to obtain detectable osteogenic differentiation of C2C12 cells, the initial concentration of BMP-2 higher than 750 μg/L was needed. The cells on PCL-NHS samples showed spatial alkaline phosphatase staining correlating with local patterns of BMP-2, although the intensity was lower than the controls (PCL-NaOH and PCL-Fibrin). Our results have demonstrated that the developed AM-ADE process holds great promise in creating TECs with highly controlled GF patterning. Impact statement The combined process of additive manufacturing with acoustic droplet ejection to control growth factor (GF) distribution across three-dimensional (3D) porous scaffolds that is presented in this study enables creating 3D tissue engineering constructs with highly controlled GF patterning. Such constructs enable temporal and spatial presentations of biological cues for enhancing cell migration and differentiation and eventually the formation of targeted tissues in vitro and in vivo.
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Affiliation(s)
- Yaser Shanjani
- Department of Orthopedic Surgery, School of Medicine, Stanford University, Stanford, California
| | - Sean Michael Siebert
- Department of Orthopedic Surgery, School of Medicine, Stanford University, Stanford, California
| | - Dai Fei Elmer Ker
- Department of Orthopedic Surgery, School of Medicine, Stanford University, Stanford, California
- Institute for Tissue Engineering and Regenerative Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, New Territories, Hong Kong SAR
| | - Angel E. Mercado-Pagán
- Department of Orthopedic Surgery, School of Medicine, Stanford University, Stanford, California
| | - Yunzhi Peter Yang
- Department of Orthopedic Surgery, School of Medicine, Stanford University, Stanford, California
- Department of Materials Science and Engineering, Stanford University, Stanford, California
- Department of Bioengineering, Stanford University, Stanford, California
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7
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Yerneni SS, Lathwal S, Shrestha P, Shirwan H, Matyjaszewski K, Weiss L, Yolcu ES, Campbell PG, Das SR. Rapid On-Demand Extracellular Vesicle Augmentation with Versatile Oligonucleotide Tethers. ACS NANO 2019; 13:10555-10565. [PMID: 31436946 PMCID: PMC6800810 DOI: 10.1021/acsnano.9b04651] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Exosomes show potential as ideal vehicles for drug delivery because of their natural role in transferring biological cargo between cells. However, current methods to engineer exosomes without negatively impacting their function remain challenging. Manipulating exosome-secreting cells is complex and time-consuming, while direct functionalization of exosome surface proteins suffers from low specificity and low efficiency. We demonstrate a rapid, versatile, and scalable method with oligonucleotide tethers to enable diverse surface functionalization on both human and murine exosomes. These exosome surface modifiers, which range from reactive functional groups and small molecules to aptamers and large proteins, can readily and efficiently enhance native exosome properties. We show that cellular uptake of exosomes can be specifically altered with a tethered AS1411 aptamer, and targeting specificity can be altered with a tethered protein. We functionalize exosomes with an immunomodulatory protein, FasL, and demonstrate their biological activity both in vitro and in vivo. FasL-functionalized exosomes, when bioprinted on a collagen matrix, allows spatial induction of apoptosis in tumor cells and, when injected in mice, suppresses proliferation of alloreactive T cells. This oligonucleotide tethering strategy is independent of the exosome source and further circumvents the need to genetically modify exosome-secreting cells.
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Affiliation(s)
| | - Sushil Lathwal
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
- Center for Nucleic Acids Science & Technology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Pradeep Shrestha
- Institute for Cellular Therapeutics and Department of Microbiology and Immunology, University of Louisville, Louisville, KY, USA
| | - Haval Shirwan
- Institute for Cellular Therapeutics and Department of Microbiology and Immunology, University of Louisville, Louisville, KY, USA
| | | | - Lee Weiss
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
- The Robotics Institute, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Esma S. Yolcu
- Institute for Cellular Therapeutics and Department of Microbiology and Immunology, University of Louisville, Louisville, KY, USA
| | - Phil G. Campbell
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
- Engineering Research Accelerator, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Subha R. Das
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
- Center for Nucleic Acids Science & Technology, Carnegie Mellon University, Pittsburgh, PA, USA
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9
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3D Inkjet Printing of Complex, Cell-Laden Hydrogel Structures. Sci Rep 2018; 8:17099. [PMID: 30459444 PMCID: PMC6244156 DOI: 10.1038/s41598-018-35504-2] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/23/2018] [Indexed: 12/25/2022] Open
Abstract
Inkjet printing is widely considered a promising strategy to pattern hydrogels and living cells into three-dimensional (3D) constructs that structurally resemble tissues in our body. However, this approach is currently constrained by the limited control over multi-component deposition: the variable droplet ejection characteristics of different bioinks and dispensing units make synchronized printing very challenging. This invariably results in artificial tissues that lack the complexity and function of their native counterparts. By careful optimization of the printing parameters for two different bioink formulations, here we report the inkjet-based 3D-patterning of hydrogels according to relatively complex blueprints. 3D printing of bioinks containing living cells resulted in high-resolution, multi-component living constructs. Finally, we describe a sacrificial material approach to inkjet print perfuseable channels for improved long-term cultures of larger samples. We believe that this work provides a foundation for the generation of more complex 3D tissue models by inkjet printing.
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10
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Shimoto T, Zhang XY, Akieda S, Ishikawa A, Higaki H, Nakayama K. Analysis of Cell Spheroid Morphological Characteristics Using the Spheroid Morphology Evaluation System. JOURNAL OF ROBOTICS AND MECHATRONICS 2018. [DOI: 10.20965/jrm.2018.p0819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Our research group established a technology for forming three-dimensional cell constructs to regenerate osteochondro cells without scaffolding. The established technology employed spheroids to form cell constructs. We also developed a method for arranging spheroids in arbitrary positions to form cell constructs in complex shapes. However, we could only form cell constructs as expected when the formed spheroids were the appropriate sizes. This study, therefore, aimed to chronologically analyze the spheroid morphological characteristics of rabbit mechanical stem cells using the developed spheroid morphological evaluation system. We set the numbers of cells/wells as 2 × 104, 3 × 104, 4 × 104, 5 × 104, 6 × 104, and 7 × 104 and the passage number as 7. Further, we observed the cultured spheroids every 24 hours after seeding for five days. The analysis enabled us to specify an optimal range for the numbers of cells required to form spheroids with high degrees of circularity. We could also control the formed spheroid sizes by adjusting the cell count and culturing time.
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11
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Tuzmen C, Verdelis K, Weiss L, Campbell P. Crosstalk between substance P and calcitonin gene-related peptide during heterotopic ossification in murine Achilles tendon. J Orthop Res 2018; 36:1444-1455. [PMID: 29227562 PMCID: PMC6449576 DOI: 10.1002/jor.23833] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 12/04/2017] [Indexed: 02/04/2023]
Abstract
Heterotopic ossification (HO) is abnormal bone formation within soft tissue, usually predisposed by neurogenic or musculoskeletal trauma. Inflammation resulting from trauma is considered to be the main trigger for HO by eliciting changes within the injury site, including elevation of bone morphogenetic proteins (BMPs). Recent research, however, has also associated changes in sensory neuropeptide expression with HO. Substance P (SP) and calcitonin gene-related peptide (CGRP) are two of those neuropeptides that have been implicated with various aspects of HO, including regulation of inflammation and BMP signaling. Despite discoveries associating SP and CGRP with soft tissue HO, it remains unclear whether SP and CGRP have a direct role in the induction of HO. Here, we investigated the effect of SP and CGRP in vivo with the aid of inkjet-based biopatterning technology to controllably deliver these neuropeptides onto a murine Achilles tendon. While we did not observe any significant effect with CGRP, SP alone promoted HO in vivo with increased expression of BMP2. Remarkably, when SP and CGRP were delivered together, CGRP counteracted the effect of SP and essentially blocked SP-induced HO. This report contributes to the understanding of the complex problem of HO pathophysiology and warrants more study to better elucidate the interplay between SP and CGRP in the induction of HO. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1444-1455, 2018.
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Affiliation(s)
- Ceren Tuzmen
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania
| | - Kostas Verdelis
- Center for Craniofacial Regeneration, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Lee Weiss
- Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania,Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Phil Campbell
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania,Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania,Engineering Research Accelerator, Carnegie Mellon University, Pittsburgh, Pennsylvania
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Heher P, Mühleder S, Mittermayr R, Redl H, Slezak P. Fibrin-based delivery strategies for acute and chronic wound healing. Adv Drug Deliv Rev 2018; 129:134-147. [PMID: 29247766 DOI: 10.1016/j.addr.2017.12.007] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/24/2017] [Accepted: 12/09/2017] [Indexed: 12/17/2022]
Abstract
Fibrin, a natural hydrogel, is the end product of the physiological blood coagulation cascade and naturally involved in wound healing. Beyond its role in hemostasis, it acts as a local reservoir for growth factors and as a provisional matrix for invading cells that drive the regenerative process. Its unique intrinsic features do not only promote wound healing directly via modulation of cell behavior but it can also be fine-tuned to evolve into a delivery system for sustained release of therapeutic biomolecules, cells and gene vectors. To further augment tissue regeneration potential, current strategies exploit and modify the chemical and physical characteristics of fibrin to employ combined incorporation of several factors and their timed release. In this work we show advanced therapeutic approaches employing fibrin matrices in wound healing and cover the many possibilities fibrin offers to the field of regenerative medicine.
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Krucińska I, Żywicka B, Komisarczyk A, Szymonowicz M, Kowalska S, Zaczyńska E, Struszczyk M, Czarny A, Jadczyk P, Umińska-Wasiluk B, Rybak Z, Kowalczuk M. Biological Properties of Low-Toxicity PLGA and PLGA/PHB Fibrous Nanocomposite Implants for Osseous Tissue Regeneration. Part I: Evaluation of Potential Biotoxicity. Molecules 2017; 22:molecules22122092. [PMID: 29186078 PMCID: PMC6149750 DOI: 10.3390/molecules22122092] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 11/17/2017] [Accepted: 11/27/2017] [Indexed: 01/11/2023] Open
Abstract
In response to the demand for new implant materials characterized by high biocompatibility and bioresorption, two prototypes of fibrous nanocomposite implants for osseous tissue regeneration made of a newly developed blend of poly(l-lactide-co-glycolide) (PLGA) and syntheticpoly([R,S]-3-hydroxybutyrate), PLGA/PHB, have been developed and fabricated. Afibre-forming copolymer of glycolide and l-lactide (PLGA) was obtained by a unique method of synthesis carried out in blocksusing Zr(AcAc)4 as an initiator. The prototypes of the implants are composed of three layers of PLGA or PLGA/PHB, nonwoven fabrics with a pore structure designed to provide the best conditions for the cell proliferation. The bioactivity of the proposed implants has been imparted by introducing a hydroxyapatite material and IGF1, a growth factor. The developed prototypes of implants have been subjected to a set of in vitro and in vivobiocompatibility tests: in vitro cytotoxic effect, in vitro genotoxicity and systemic toxicity. Rabbitsshowed no signs of negative reactionafter implantation of the experimental implant prototypes.
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Affiliation(s)
- Izabella Krucińska
- Department of Material and Commodity Sciences and Textile Metrology, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Bogusława Żywicka
- Department of Experimental Surgery and Biomaterials Research, Wroclaw Medical University, Pasteura 1, 50-367 Wroclaw, Poland.
| | - Agnieszka Komisarczyk
- Department of Material and Commodity Sciences and Textile Metrology, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Maria Szymonowicz
- Department of Experimental Surgery and Biomaterials Research, Wroclaw Medical University, Pasteura 1, 50-367 Wroclaw, Poland.
| | - Stanisława Kowalska
- Department of Material and Commodity Sciences and Textile Metrology, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Ewa Zaczyńska
- Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, RudollfaWeigla 12, 53-114 Wroclaw, Poland.
| | - Marcin Struszczyk
- Department of Material and Commodity Sciences and Textile Metrology, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Anna Czarny
- Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, RudollfaWeigla 12, 53-114 Wroclaw, Poland.
| | - Piotr Jadczyk
- Department of Sanitary Biology and Ecotechnics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
| | - Barbara Umińska-Wasiluk
- Department of Sanitary Biology and Ecotechnics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
| | - Zbigniew Rybak
- Department of Experimental Surgery and Biomaterials Research, Wroclaw Medical University, Pasteura 1, 50-367 Wroclaw, Poland.
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials of the Polish Academy of Sciences, MariiSkłodowskiej-Curie 34, 41-819 Zabrze, Poland.
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, WV1 1SB Wolverhampton, UK.
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Lee S, Kim H, Kim J. Feasibility study of a biocompatible pneumatic dispensing system using mouse 3T3-J2 fibroblasts. MICRO AND NANO SYSTEMS LETTERS 2017. [DOI: 10.1186/s40486-017-0061-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Jia C, Luo B, Wang H, Bian Y, Li X, Li S, Wang H. Precise and Arbitrary Deposition of Biomolecules onto Biomimetic Fibrous Matrices for Spatially Controlled Cell Distribution and Functions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:10.1002/adma.201701154. [PMID: 28722137 PMCID: PMC6060368 DOI: 10.1002/adma.201701154] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 05/26/2017] [Indexed: 05/21/2023]
Abstract
Advances in nano-/microfabrication allow the fabrication of biomimetic substrates for various biomedical applications. In particular, it would be beneficial to control the distribution of cells and relevant biomolecules on an extracellular matrix (ECM)-like substrate with arbitrary micropatterns. In this regard, the possibilities of patterning biomolecules and cells on nanofibrous matrices are explored here by combining inkjet printing and electrospinning. Upon investigation of key parameters for patterning accuracy and reproducibility, three independent studies are performed to demonstrate the potential of this platform for: i) transforming growth factor (TGF)-β1-induced spatial differentiation of fibroblasts, ii) spatiotemporal interactions between breast cancer cells and stromal cells, and iii) cancer-regulated angiogenesis. The results show that TGF-β1 induces local fibroblast-to-myofibroblast differentiation in a dose-dependent fashion, and breast cancer clusters recruit activated stromal cells and guide the sprouting of endothelial cells in a spatially resolved manner. The established platform not only provides strategies to fabricate ECM-like interfaces for medical devices, but also offers the capability of spatially controlling cell organization for fundamental studies, and for high-throughput screening of various biomolecules for stem cell differentiation and cancer therapeutics.
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Affiliation(s)
- Chao Jia
- Department of Biomedical Engineering, Chemistry and Biological Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Bowen Luo
- Department of Biomedical Engineering, Chemistry and Biological Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Haoyu Wang
- Department of Biomedical Engineering, Chemistry and Biological Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Yongqian Bian
- Department of Biomedical Engineering, Chemistry and Biological Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
- Department of Burns and Plastics, Tangdu Hospital, Fourth Military Medical University, Shan Xi, Xi'an, 710038, China
| | - Xueyong Li
- Department of Burns and Plastics, Tangdu Hospital, Fourth Military Medical University, Shan Xi, Xi'an, 710038, China
| | - Shaohua Li
- Department of Surgery, Rutgers University-Robert Wood Johnson Medical School, New Brunswick, NJ, 08903, USA
| | - Hongjun Wang
- Department of Biomedical Engineering, Chemistry and Biological Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
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Bracaglia LG, Smith BT, Watson E, Arumugasaamy N, Mikos AG, Fisher JP. 3D printing for the design and fabrication of polymer-based gradient scaffolds. Acta Biomater 2017; 56:3-13. [PMID: 28342878 PMCID: PMC5544968 DOI: 10.1016/j.actbio.2017.03.030] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/24/2017] [Accepted: 03/21/2017] [Indexed: 12/27/2022]
Abstract
To accurately mimic the native tissue environment, tissue engineered scaffolds often need to have a highly controlled and varied display of three-dimensional (3D) architecture and geometrical cues. Additive manufacturing in tissue engineering has made possible the development of complex scaffolds that mimic the native tissue architectures. As such, architectural details that were previously unattainable or irreproducible can now be incorporated in an ordered and organized approach, further advancing the structural and chemical cues delivered to cells interacting with the scaffold. This control over the environment has given engineers the ability to unlock cellular machinery that is highly dependent upon the intricate heterogeneous environment of native tissue. Recent research into the incorporation of physical and chemical gradients within scaffolds indicates that integrating these features improves the function of a tissue engineered construct. This review covers recent advances on techniques to incorporate gradients into polymer scaffolds through additive manufacturing and evaluate the success of these techniques. As covered here, to best replicate different tissue types, one must be cognizant of the vastly different types of manufacturing techniques available to create these gradient scaffolds. We review the various types of additive manufacturing techniques that can be leveraged to fabricate scaffolds with heterogeneous properties and discuss methods to successfully characterize them. STATEMENT OF SIGNIFICANCE Additive manufacturing techniques have given tissue engineers the ability to precisely recapitulate the native architecture present within tissue. In addition, these techniques can be leveraged to create scaffolds with both physical and chemical gradients. This work offers insight into several techniques that can be used to generate graded scaffolds, depending on the desired gradient. Furthermore, it outlines methods to determine if the designed gradient was achieved. This review will help to condense the abundance of information that has been published on the creation and characterization of gradient scaffolds and to provide a single review discussing both methods for manufacturing gradient scaffolds and evaluating the establishment of a gradient.
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Affiliation(s)
- Laura G Bracaglia
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Brandon T Smith
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Emma Watson
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Navein Arumugasaamy
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA; Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Health System, Washington, D.C. 20010, USA
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA.
| | - John P Fisher
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA.
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17
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Yin L, Yuvienco C, Montclare JK. Protein based therapeutic delivery agents: Contemporary developments and challenges. Biomaterials 2017; 134:91-116. [PMID: 28458031 DOI: 10.1016/j.biomaterials.2017.04.036] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 04/18/2017] [Accepted: 04/21/2017] [Indexed: 12/15/2022]
Abstract
As unique biopolymers, proteins can be employed for therapeutic delivery. They bear important features such as bioavailability, biocompatibility, and biodegradability with low toxicity serving as a platform for delivery of various small molecule therapeutics, gene therapies, protein biologics and cells. Depending on size and characteristic of the therapeutic, a variety of natural and engineered proteins or peptides have been developed. This, coupled to recent advances in synthetic and chemical biology, has led to the creation of tailor-made protein materials for delivery. This review highlights strategies employing proteins to facilitate the delivery of therapeutic matter, addressing the challenges for small molecule, gene, protein and cell transport.
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Affiliation(s)
- Liming Yin
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, NY 11201, United States
| | - Carlo Yuvienco
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, NY 11201, United States
| | - Jin Kim Montclare
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, NY 11201, United States; Department of Chemistry, New York University, New York, NY 10003, United States; Department of Biomaterials, NYU College of Dentistry, New York, NY 10010, United States; Department of Biochemistry, SUNY Downstate Medical Center, Brooklyn, NY 11203, United States.
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18
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Serpooshan V, Mahmoudi M, Hu DA, Hu JB, Wu SM. Bioengineering cardiac constructs using 3D printing. ACTA ACUST UNITED AC 2017. [DOI: 10.2217/3dp-2016-0009] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
To date, 3D bioprinting has found many actual and potential applications in medicine through assembling cells, biomaterials and supporting factors into living tissues. In particular, the combination of bioprinting and tissue engineering has emerged as a new promising strategy to address the growing need for tissues and organs for both transplantation and basic research. This review summarizes the current progress in the design and printing of bioengineered cardiac tissues for various applications. We highlight the specific biological and technical complexities such as the choice of cells and biomaterials, cell viability and function, vasculature design and tissue architecture. Current challenges and future perspectives in the field of cardiovascular tissue printing are also discussed.
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Affiliation(s)
- Vahid Serpooshan
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Morteza Mahmoudi
- Center for Nanomedicine and Department of Anesthesiology, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Daniel A Hu
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - James B Hu
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Sean M Wu
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, USA
- Institute of Stem Cell Biology & Regenerative Medicine, Stanford, CA, USA
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University, Stanford, CA, USA
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19
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Bioprinted fibrin-factor XIII-hyaluronate hydrogel scaffolds with encapsulated Schwann cells and their in vitro characterization for use in nerve regeneration. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.bprint.2016.12.001] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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20
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21
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Zhang W, Gorantla VS, Campbell PG, Li Y, Yang Y, Komatsu C, Weiss LE, Zheng XX, Solari MG. Biopatterned CTLA4/Fc Matrices Facilitate Local Immunomodulation, Engraftment, and Glucose Homeostasis After Pancreatic Islet Transplantation. Diabetes 2016; 65:3660-3666. [PMID: 27650855 DOI: 10.2337/db16-0320] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 09/07/2016] [Indexed: 11/13/2022]
Abstract
Pancreatic islet transplantation (PIT) represents a potential therapy to circumvent the need for exogenous insulin in type 1 diabetes. However, PIT remains limited by lack of donor islets and the need for long-term multidrug immunosuppression to prevent alloimmune islet rejection. Our goal was to evaluate a local immunoregulatory strategy that sustains islet allograft survival and restores glucose homeostasis in the absence of systemic immunosuppression. Nanogram quantities of murine CTLA4/Fc fusion protein were controllably delivered within human acellular dermal matrix scaffolds using an inkjet-based biopatterning technology and cotransplanted with allogeneic islets under the renal capsule to create an immunoregulatory microenvironment around the islet allograft. We achieved long-term engraftment of small loads of allogeneic islet cells with 40% of MHC-mismatched mouse recipients maintaining sustained normoglycemia following pancreatic β-cell ablation by streptozotocin. Biopatterned CTLA4/Fc local therapy was associated with expansion of Foxp3+ regulatory T cells and shifts in cytokine production and gene expression from proinflammatory to regulatory profiles, thus substantially benefiting islet allografts survival and function. This study is a new paradigm for targeted therapies in PIT that demonstrates the favorable effects of immune alterations in the transplant milieu and suggests a unique strategy for minimizing systemic immunosuppression and promoting islet allograft survival.
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Affiliation(s)
- Wensheng Zhang
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Vijay S Gorantla
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Phil G Campbell
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA
| | - Yang Li
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Yang Yang
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Chiaki Komatsu
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Lee E Weiss
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
- Robotics Institute, Carnegie Mellon University, Pittsburgh, PA
| | - Xin Xiao Zheng
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
- Transplantation Medical Center, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Mario G Solari
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
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22
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Kim YK, Park JA, Yoon WH, Kim J, Jung S. Drop-on-demand inkjet-based cell printing with 30- μm nozzle diameter for cell-level accuracy. BIOMICROFLUIDICS 2016; 10:064110. [PMID: 27990212 PMCID: PMC5135712 DOI: 10.1063/1.4968845] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Accepted: 11/14/2016] [Indexed: 05/05/2023]
Abstract
We present drop-on-demand inkjet-based mammalian cell printing with a 30-μm nozzle diameter for cell-level accuracy. High-speed imaging techniques have been used to analyze the go-and-stop movement of cells inside the nozzle under a pulsed pressure generated by a piezo-actuator and the jet formation after ejection. Patterning of an array of 20 × 20 dots on a glass substrate reveals that each printed drop contains 1.30 cells on average at the cell concentration of 5.0 × 106 cells ml-1 for the very small nozzle, whereas larger nozzles with the diameter of 50 and 80 μm deliver 2.57 and 2.88 cells per drop, respectively. The effects of the size and concentration of printed cells on the number of cells have also been investigated. Furthermore, the effect of the nozzle diameter on printed cells has been evaluated through an examination of viability, proliferation, and morphology of cells by using a live/dead assay kit, CCK-8 assay, and cellular morphology imaging, respectively. We believe that the 30-μm inkjet nozzle can be used for precise cell deposition without any damages to the printed mammalian cells.
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Affiliation(s)
- Young Kwon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology , 77 Cheongam-Ro, Nam-Gu, Pohang 37673, South Korea
| | - Ju An Park
- Department of Creative IT Engineering, Pohang University of Science and Technology , 77 Cheongam-Ro, Nam-Gu, Pohang 37673, South Korea
| | - Woong Hee Yoon
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology , 77 Cheongam-Ro, Nam-Gu, Pohang 37673, South Korea
| | - Joonwon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology , 77 Cheongam-Ro, Nam-Gu, Pohang 37673, South Korea
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Rabyk M, Hruby M, Vetrik M, Kucka J, Proks V, Parizek M, Konefal R, Krist P, Chvatil D, Bacakova L, Slouf M, Stepanek P. Modified glycogen as construction material for functional biomimetic microfibers. Carbohydr Polym 2016; 152:271-279. [DOI: 10.1016/j.carbpol.2016.06.107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 06/21/2016] [Accepted: 06/28/2016] [Indexed: 12/16/2022]
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24
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Eltaher HM, Yang J, Shakesheff KM, Dixon JE. Highly efficient intracellular transduction in three-dimensional gradients for programming cell fate. Acta Biomater 2016; 41:181-92. [PMID: 27265151 DOI: 10.1016/j.actbio.2016.06.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/22/2016] [Accepted: 06/02/2016] [Indexed: 01/01/2023]
Abstract
UNLABELLED Fundamental behaviour such as cell fate, growth and death are mediated through the control of key genetic transcriptional regulators. These regulators are activated or repressed by the integration of multiple signalling molecules in spatio-temporal gradients. Engineering these gradients is complex but considered key in controlling tissue formation in regenerative medicine approaches. Direct programming of cells using exogenously delivered transcription factors can by-pass growth factor complexity but there is still a requirement to deliver such activity spatio-temporally. We previously developed a technology termed GAG-binding enhanced transduction (GET) to efficiently deliver a variety of cargoes intracellularly using GAG-binding domains to promote cell targeting, and cell penetrating peptides (CPPs) to allow cell entry. Herein we demonstrate that GET can be used in a three dimensional (3D) hydrogel matrix to produce gradients of intracellular transduction of mammalian cells. Using a compartmentalised diffusion model with a source-gel-sink (So-G-Si) assembly, we created gradients of reporter proteins (mRFP1-tagged) and a transcription factor (TF, myogenic master regulator MyoD) and showed that GET can be used to deliver molecules into cells spatio-temporally by monitoring intracellular transduction and gene expression programming as a function of location and time. The ability to spatio-temporally control the intracellular delivery of functional proteins will allow the establishment of gradients of cell programming in hydrogels and approaches to direct cellular behaviour for many regenerative medicine applications. STATEMENT OF SIGNIFICANCE Regenerative medicine aims to reform functional biological tissues by controlling cell behaviour. Growth factors (GFs) are soluble cues presented to cells in spatio-temporal gradients and play important roles programming cell fate and gene expression. The efficient transduction of cells by GET (Glycosaminoglycan-enhanced transducing)-tagged transcription factors (TFs) can be used to by-pass GF-stimulation and directly program cells. For the first time we demonstrate diffusion of GET proteins generate stable protein transduction gradients. We demonstrated the feasibility of creating spatio-temporal gradients of GET-MyoD and show differential programing of myogenic differentiation. We believe that GET could provide a powerful tool to program cell behaviour using gradients of recombinant proteins that allow tissue generation directly by programming gene expression with TFs.
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25
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Gudapati H, Dey M, Ozbolat I. A comprehensive review on droplet-based bioprinting: Past, present and future. Biomaterials 2016; 102:20-42. [PMID: 27318933 DOI: 10.1016/j.biomaterials.2016.06.012] [Citation(s) in RCA: 385] [Impact Index Per Article: 48.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 06/01/2016] [Accepted: 06/05/2016] [Indexed: 02/06/2023]
Abstract
Droplet-based bioprinting (DBB) offers greater advantages due to its simplicity and agility with precise control on deposition of biologics including cells, growth factors, genes, drugs and biomaterials, and has been a prominent technology in the bioprinting community. Due to its immense versatility, DBB technology has been adopted by various application areas, including but not limited to, tissue engineering and regenerative medicine, transplantation and clinics, pharmaceutics and high-throughput screening, and cancer research. Despite the great benefits, the technology currently faces several challenges such as a narrow range of available bioink materials, bioprinting-induced cell damage at substantial levels, limited mechanical and structural integrity of bioprinted constructs, and restrictions on the size of constructs due to lack of vascularization and porosity. This paper presents a first-time review of DBB and comprehensively covers the existing DBB modalities including inkjet, electrohydrodynamic, acoustic, and micro-valve bioprinting. The recent notable studies are highlighted, the relevant bioink biomaterials and bioprinters are expounded, the application areas are presented, and the future prospects are provided to the reader.
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Affiliation(s)
- Hemanth Gudapati
- Engineering Science and Mechanics Department, Penn State University, University Park, PA 16802, USA; The Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA
| | - Madhuri Dey
- Department of Chemistry, Penn State University, University Park, PA 16802, USA; The Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA
| | - Ibrahim Ozbolat
- Engineering Science and Mechanics Department, Penn State University, University Park, PA 16802, USA; The Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA.
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26
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Scoutaris N, Ross S, Douroumis D. Current Trends on Medical and Pharmaceutical Applications of Inkjet Printing Technology. Pharm Res 2016; 33:1799-816. [DOI: 10.1007/s11095-016-1931-3] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 04/21/2016] [Indexed: 11/27/2022]
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27
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Affiliation(s)
- Falguni Pati
- Division of Proteomics and Nanobiotechnology, Science for Life Laboratory KTH – Royal Institute of Technology Stockholm Schweden
| | - Jesper Gantelius
- Division of Proteomics and Nanobiotechnology, Science for Life Laboratory KTH – Royal Institute of Technology Stockholm Schweden
| | - Helene Andersson Svahn
- Division of Proteomics and Nanobiotechnology, Science for Life Laboratory KTH – Royal Institute of Technology Stockholm Schweden
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28
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Pati F, Gantelius J, Svahn HA. 3D Bioprinting of Tissue/Organ Models. Angew Chem Int Ed Engl 2016; 55:4650-65. [PMID: 26895542 DOI: 10.1002/anie.201505062] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Indexed: 12/17/2022]
Abstract
In vitro tissue/organ models are useful platforms that can facilitate systematic, repetitive, and quantitative investigations of drugs/chemicals. The primary objective when developing tissue/organ models is to reproduce physiologically relevant functions that typically require complex culture systems. Bioprinting offers exciting prospects for constructing 3D tissue/organ models, as it enables the reproducible, automated production of complex living tissues. Bioprinted tissues/organs may prove useful for screening novel compounds or predicting toxicity, as the spatial and chemical complexity inherent to native tissues/organs can be recreated. In this Review, we highlight the importance of developing 3D in vitro tissue/organ models by 3D bioprinting techniques, characterization of these models for evaluating their resemblance to native tissue, and their application in the prioritization of lead candidates, toxicity testing, and as disease/tumor models.
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Affiliation(s)
- Falguni Pati
- Division of Proteomics and Nanobiotechnology, Science for Life Laboratory, KTH-Royal Institute of Technology, Stockholm, Sweden
| | - Jesper Gantelius
- Division of Proteomics and Nanobiotechnology, Science for Life Laboratory, KTH-Royal Institute of Technology, Stockholm, Sweden
| | - Helene Andersson Svahn
- Division of Proteomics and Nanobiotechnology, Science for Life Laboratory, KTH-Royal Institute of Technology, Stockholm, Sweden.
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29
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Wang Y, Li Y, Thérien-Aubin H, Ma J, Zandstra PW, Kumacheva E. Two-dimensional arrays of cell-laden polymer hydrogel modules. BIOMICROFLUIDICS 2016; 10:014110. [PMID: 26858822 PMCID: PMC4723409 DOI: 10.1063/1.4940430] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 01/07/2016] [Indexed: 05/05/2023]
Abstract
Microscale technologies offer the capability to generate in vitro artificial cellular microenvironments that recapitulate the spatial, biochemical, and biophysical characteristics of the native extracellular matrices and enable systematic, quantitative, and high-throughput studies of cell fate in their respective environments. We developed a microfluidic platform for the generation of two-dimensional arrays of micrometer-size cell-laden hydrogel modules (HMs) for cell encapsulation and culture. Fibroblast cells (NIH 3T3) and non-adherent T cells (EL4) encapsulated in HMs showed high viability and proliferation. The platform was used for real-time studies of the effect of spatial constraints and structural and mechanical properties of HMs on cell growth, both on the level of individual cells. Due to the large number of cell-laden HMs and stochastic cell distribution, cell studies were conducted in a time- and labor efficient manner. The platform has a broad range of applications in the exploration of the role of chemical and biophysical cues on individual cells, studies of in vitro cell migration, and the examination of cell-extracellular matrix and cell-cell interactions.
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Affiliation(s)
- Yihe Wang
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H6, Canada
| | - Yunfeng Li
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H6, Canada
| | | | - Jennifer Ma
- Institute of Biomaterials & Biomedical Engineering, University of Toronto , 164 College Street, Toronto, Ontario M5S 3G9, Canada
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Lagunas A, Martínez E, Samitier J. Surface-Bound Molecular Gradients for the High-Throughput Screening of Cell Responses. Front Bioeng Biotechnol 2015; 3:132. [PMID: 26380260 PMCID: PMC4553394 DOI: 10.3389/fbioe.2015.00132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 08/17/2015] [Indexed: 11/24/2022] Open
Abstract
Chemical gradient surfaces are described as surfaces with a gradually varying composition along their length. Continuous chemical gradients have recently been proposed as an alternative to discrete microarrays for the high-throughput screening of the effects of ligand concentration in cells. Here, we review some of the most recent examples in which gradients have been used to evaluate the effect of a varying ligand concentration in cell adhesion, morphology, growth, and differentiation of cells, including some of our recent findings. They show the importance of the organization of ligands at the nanoscale, which is highlighted by abrupt changes in cell behavior at critical concentration thresholds.
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Affiliation(s)
- Anna Lagunas
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , Madrid , Spain ; Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC) , Barcelona , Spain
| | - Elena Martínez
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , Madrid , Spain ; Biomimetic Systems for Cell Engineering Group, Institute for Bioengineering of Catalonia (IBEC) , Barcelona , Spain ; Department of Electronics, University of Barcelona (UB) , Barcelona , Spain
| | - Josep Samitier
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , Madrid , Spain ; Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC) , Barcelona , Spain ; Department of Electronics, University of Barcelona (UB) , Barcelona , Spain
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Samorezov JE, Alsberg E. Spatial regulation of controlled bioactive factor delivery for bone tissue engineering. Adv Drug Deliv Rev 2015; 84:45-67. [PMID: 25445719 PMCID: PMC4428953 DOI: 10.1016/j.addr.2014.11.018] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 11/21/2014] [Accepted: 11/24/2014] [Indexed: 12/29/2022]
Abstract
Limitations of current treatment options for critical size bone defects create a significant clinical need for tissue engineered bone strategies. This review describes how control over the spatiotemporal delivery of growth factors, nucleic acids, and drugs and small molecules may aid in recapitulating signals present in bone development and healing, regenerating interfaces of bone with other connective tissues, and enhancing vascularization of tissue engineered bone. State-of-the-art technologies used to create spatially controlled patterns of bioactive factors on the surfaces of materials, to build up 3D materials with patterns of signal presentation within their bulk, and to pattern bioactive factor delivery after scaffold fabrication are presented, highlighting their applications in bone tissue engineering. As these techniques improve in areas such as spatial resolution and speed of patterning, they will continue to grow in value as model systems for understanding cell responses to spatially regulated bioactive factor signal presentation in vitro, and as strategies to investigate the capacity of the defined spatial arrangement of these signals to drive bone regeneration in vivo.
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Affiliation(s)
- Julia E Samorezov
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Eben Alsberg
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA; Department of Orthopaedic Surgery, Case Western Reserve University, Cleveland, OH, USA; National Center for Regenerative Medicine, Division of General Medical Sciences, Case Western Reserve University, Cleveland, OH, USA.
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3D Printing and Biofabrication for Load Bearing Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 881:3-14. [DOI: 10.1007/978-3-319-22345-2_1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Herberg S, Kondrikova G, Periyasamy-Thandavan S, Howie RN, Elsalanty ME, Weiss L, Campbell P, Hill WD, Cray JJ. Inkjet-based biopatterning of SDF-1β augments BMP-2-induced repair of critical size calvarial bone defects in mice. Bone 2014; 67:95-103. [PMID: 25016095 PMCID: PMC4149833 DOI: 10.1016/j.bone.2014.07.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 06/08/2014] [Accepted: 07/03/2014] [Indexed: 01/07/2023]
Abstract
BACKGROUND A major problem in craniofacial surgery is non-healing bone defects. Autologous reconstruction remains the standard of care for these cases. Bone morphogenetic protein-2 (BMP-2) therapy has proven its clinical utility, although non-targeted adverse events occur due to the high milligram-level doses used. Ongoing efforts explore the use of different growth factors, cytokines, or chemokines, as well as co-therapy to augment healing. METHODS Here we utilize inkjet-based biopatterning to load acellular DermaMatrix delivery matrices with nanogram-level doses of BMP-2, stromal cell-derived factor-1β (SDF-1β), transforming growth factor-β1 (TGF-β1), or co-therapies thereof. We tested the hypothesis that bioprinted SDF-1β co-delivery enhances BMP-2 and TGF-β1-driven osteogenesis both in-vitro and in-vivo using a mouse calvarial critical size defect (CSD) model. RESULTS Our data showed that BMP-2 bioprinted in low-doses induced significant new bone formation by four weeks post-operation. TGF-β1 was less effective compared to BMP-2, and SDF-1β therapy did not enhance osteogenesis above control levels. However, co-delivery of BMP-2+SDF-1β was shown to augment BMP-2-induced bone formation compared to BMP-2 alone. In contrast, co-delivery of TGF-β1+SDF-1β decreased bone healing compared to TGF-β1 alone. This was further confirmed in vitro by osteogenic differentiation studies using MC3T3-E1 pre-osteoblasts. CONCLUSIONS Our data indicates that sustained release delivery of a low-dose growth factor therapy using biopatterning technology can aid in healing CSD injuries. SDF-1β augments the ability for BMP-2 to drive healing, a result confirmed in vivo and in vitro; however, because SDF-1β is detrimental to TGF-β1-driven osteogenesis, its effect on osteogenesis is not universal.
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Affiliation(s)
- Samuel Herberg
- Department of Cellular Biology and Anatomy, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA
| | - Galina Kondrikova
- Department of Cellular Biology and Anatomy, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA
| | | | - R Nicole Howie
- Department of Oral Biology, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA
| | - Mohammed E Elsalanty
- Department of Oral Biology, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA; The Institute for Regenerative and Reparative Medicine, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA
| | - Lee Weiss
- The Robotics Institute, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, PA, USA; McGowan Institute for Regenerative Medicine, 450 Technology Drive, Pittsburgh, PA, USA
| | - Phil Campbell
- The Institute for Complex Engineered Systems, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, PA, USA; McGowan Institute for Regenerative Medicine, 450 Technology Drive, Pittsburgh, PA, USA
| | - William D Hill
- Department of Cellular Biology and Anatomy, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA; Department of Orthopaedic Surgery, Georgia Regents University, 1120 15th St., Augusta, GA, USA; The Institute for Regenerative and Reparative Medicine, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA; Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - James J Cray
- Department of Cellular Biology and Anatomy, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA; Department of Oral Biology, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA; Department of Orthopaedic Surgery, Georgia Regents University, 1120 15th St., Augusta, GA, USA; Department of Orthodontics and Surgery, Division of Plastic Surgery, Georgia Regents University, 1120 15th St., Augusta, GA, USA; The Institute for Regenerative and Reparative Medicine, Georgia Regents University, 1459 Laney Walker Blvd., Augusta, GA, USA.
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Pohlmeyer JV, Waters SL, Cummings LJ. Mathematical model of growth factor driven haptotaxis and proliferation in a tissue engineering scaffold. Bull Math Biol 2013; 75:393-427. [PMID: 23358798 DOI: 10.1007/s11538-013-9810-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 01/07/2013] [Indexed: 11/28/2022]
Abstract
Motivated by experimental work (Miller et al. in Biomaterials 27(10):2213-2221, 2006, 32(11):2775-2785, 2011) we investigate the effect of growth factor driven haptotaxis and proliferation in a perfusion tissue engineering bioreactor, in which nutrient-rich culture medium is perfused through a 2D porous scaffold impregnated with growth factor and seeded with cells. We model these processes on the timescale of cell proliferation, which typically is of the order of days. While a quantitative representation of these phenomena requires more experimental data than is yet available, qualitative agreement with preliminary experimental studies (Miller et al. in Biomaterials 27(10):2213-2221, 2006) is obtained, and appears promising. The ultimate goal of such modeling is to ascertain initial conditions (growth factor distribution, initial cell seeding, etc.) that will lead to a final desired outcome.
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Affiliation(s)
- J V Pohlmeyer
- Department of Mathematical Sciences, New Jersey Institute of Technology, University Heights, Newark, NJ 07102, USA
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Lagunas A, Comelles J, Oberhansl S, Hortigüela V, Martínez E, Samitier J. Continuous bone morphogenetic protein-2 gradients for concentration effect studies on C2C12 osteogenic fate. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2013; 9:694-701. [PMID: 23313904 DOI: 10.1016/j.nano.2012.12.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 12/26/2012] [Indexed: 11/20/2022]
Abstract
UNLABELLED Cells can respond to small changes in a varying concentration of exogenous signaling molecules. Here we propose the use of continuous surface chemical gradients for the in-depth study of dose-dependent effects on cells. A continuous surface gradient of bone morphogenetic protein-2 (BMP-2) is presented. The gradient covers a narrow range of surface densities (from 1.4 to 2.3 pmol/cm(2)) with a shallow slope (0.9 pmol/cm(3)). These characteristics represent a quasi-homogeneous surface concentration at the cell scale, which is crucial for cell screening studies. Cell fate evaluation at early stages of osteogenesis in C2C12 cells, indicates the potential of continuous gradients for in vitro screening applications. FROM THE CLINICAL EDITOR The authors propose the use of surface-applied continuous chemical gradients for in-depth study of dose-dependent effects on cells. The method is demonstrated using BMP-2 proteins on C2C12 cells as a model system.
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Affiliation(s)
- Anna Lagunas
- Centro de Investigación Biomédica en Red. Bioingeniería, Biomateriales y Nanomedicina (Ciber-bbn), C/ María de Luna 11, Edificio CEEI, 50018 Zaragoza, Spain.
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Shimoto T, Hidaka N, Sasaki H, Nakayama K, Akieda S, Matsuda S, Miura H, Iwamoto Y. Bio Rapid Prototyping Project: Development of Spheroid Formation System for Regenerative Medicine. LECTURE NOTES IN ELECTRICAL ENGINEERING 2013. [DOI: 10.1007/978-94-007-6996-0_89] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Perez RA, Kim TH, Kim M, Jang JH, Ginebra MP, Kim HW. Calcium phosphate cements loaded with basic fibroblast growth factor: Delivery andin vitrocell response. J Biomed Mater Res A 2012; 101:923-31. [DOI: 10.1002/jbm.a.34390] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 07/10/2012] [Accepted: 07/24/2012] [Indexed: 11/11/2022]
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Santo VE, Gomes ME, Mano JF, Reis RL. From nano- to macro-scale: nanotechnology approaches for spatially controlled delivery of bioactive factors for bone and cartilage engineering. Nanomedicine (Lond) 2012; 7:1045-66. [DOI: 10.2217/nnm.12.78] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The field of biomaterials has advanced towards the molecular and nanoscale design of bioactive systems for tissue engineering, regenerative medicine and drug delivery. Spatial cues are displayed in the 3D extracellular matrix and can include signaling gradients, such as those observed during chemotaxis. Architectures range from the nanometer to the centimeter length scales as exemplified by extracellular matrix fibers, cells and macroscopic shapes. The main focus of this review is the application of a biomimetic approach by the combination of architectural cues, obtained through the application of micro- and nanofabrication techniques, with the ability to sequester and release growth factors and other bioactive agents in a spatiotemporal controlled manner for bone and cartilage engineering.
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Affiliation(s)
- Vítor E Santo
- 3B’s Research Group - Biomaterials, Biodegradables & Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, Guimarães, Portugal
| | - Manuela E Gomes
- 3B’s Research Group - Biomaterials, Biodegradables & Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, Guimarães, Portugal
| | - João F Mano
- 3B’s Research Group - Biomaterials, Biodegradables & Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, Guimarães, Portugal
| | - Rui L Reis
- 3B’s Research Group - Biomaterials, Biodegradables & Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, Guimarães, Portugal
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Zhu X, Zheng Q, Yang H, Cai J, Huang L, Duan Y, Xu Z, Cen P. Recent advances in inkjet dispensing technologies: applications in drug discovery. Expert Opin Drug Discov 2012; 7:761-70. [DOI: 10.1517/17460441.2012.697892] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Shimoto T, Nakayama K, Matsuda S, Iwamoto Y. Building of HD MACs Using Cell Processing Robot for Cartilage Regeneration. JOURNAL OF ROBOTICS AND MECHATRONICS 2012. [DOI: 10.20965/jrm.2012.p0347] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We have been working on the development of scaffold free cell delivery system, and showing good results in the regeneration of rabbit osteochondral defect for more than three years by implantation of molded mesenchymal stem cells construct without use of exogenous factors. The entire procedure is simple, yet it takes time and labor to build a single construct by even experienced hands. Therefore, this study was aimed to develop a cell processing robot for building scaffoldfree HD MACs (High-Density Mesenchymal stem cell Autologous Constructs) for cartilage regeneration. As a result, the scaffold-free HD MACs could be obtained with manual procedure just as the same without contamination. We have implanted the construct in a rabbit with osteochondral defect in the knee. In this study, we have developed a cell processing robot for cartilage regeneration. The entire system is almost GMP ready. We are preparing clinical trials at Kyushu University Hospital for HD MACs implantation to cartilage defect with this robot system.
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Meyers SR, Grinstaff MW. Biocompatible and bioactive surface modifications for prolonged in vivo efficacy. Chem Rev 2012; 112:1615-32. [PMID: 22007787 PMCID: PMC3878818 DOI: 10.1021/cr2000916] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Steven R. Meyers
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, MA 02215, USA
| | - Mark W. Grinstaff
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, MA 02215, USA
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42
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Yamazoe H. Fabrication of protein micropatterns using a functional substrate with convertible protein-adsorption surface properties. J Biomed Mater Res A 2011; 100:362-9. [DOI: 10.1002/jbm.a.33279] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 09/01/2011] [Accepted: 09/14/2011] [Indexed: 11/08/2022]
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Li B, Wang P, Li H, Ma XL. An individualized and bioactive artificial intervertebral disc. Orthop Surg 2011; 2:310-2. [PMID: 22009968 DOI: 10.1111/j.1757-7861.2010.00105.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Nowadays, prostheses used for total disc replacement are mostly made of non-bioactive materials and always predetermined to certain sizes by the manufacturers, resulting in irreversible attrition and non-individualization. Here, the design of a novel, individualized and bioactive artificial intervertebral disc which avoids the above-mentioned problems is described, and an evaluation made of it.
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Affiliation(s)
- Bing Li
- Department of Orthopaedics, The General Hospital of Tianjin Medical University Tianjin Hospital, Tianjin, China
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Gribova V, Crouzier T, Picart C. A material's point of view on recent developments of polymeric biomaterials: control of mechanical and biochemical properties. JOURNAL OF MATERIALS CHEMISTRY 2011; 21:14354-14366. [PMID: 25067892 PMCID: PMC4111539 DOI: 10.1039/c1jm11372k] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cells respond to a variety of stimuli, including biochemical, topographical and mechanical signals originating from their micro-environment. Cell responses to the mechanical properties of their substrates have been increasingly studied for about 14 years. To this end, several types of materials based on synthetic and natural polymers have been developed. Presentation of biochemical ligands to the cells is also important to provide additional functionalities or more selectivity in the details of cell/material interaction. In this review article, we will emphasize the development of synthetic and natural polymeric materials with well-characterized and tunable mechanical properties. We will also highlight how biochemical signals can be presented to the cells by combining them with these biomaterials. Such developments in materials science are not only important for fundamental biophysical studies on cell/material interactions but also for the design of a new generation of advanced and highly functional biomaterials.
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Affiliation(s)
- Varvara Gribova
- LMGP-MINATEC, Grenoble Institute of Technology, 3 parvis Louis Néel 38016 Grenoble, France
| | - Thomas Crouzier
- LMGP-MINATEC, Grenoble Institute of Technology, 3 parvis Louis Néel 38016 Grenoble, France
| | - Catherine Picart
- LMGP-MINATEC, Grenoble Institute of Technology, 3 parvis Louis Néel 38016 Grenoble, France
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45
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Wylie RG, Shoichet MS. Three-dimensional spatial patterning of proteins in hydrogels. Biomacromolecules 2011; 12:3789-96. [PMID: 21853977 DOI: 10.1021/bm201037j] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The ability to create three-dimensional biochemical environments that mimic those in vivo is valuable for the elucidation of fundamental biological phenomena and pathways. To this end, we designed a system in which proteins can be photochemically patterned in three dimensions within hydrogels under physiological conditions. Fibroblast growth factor-2 (FGF2) was immobilized within agarose hydrogels that were modified with two-photon labile 6-bromo-7-hydroxycoumarin-protected thiols. Two different methods were developed for FGF2 immobilization. The first procedure relies on the protein containing free cysteines for the formation of disulfide bonds with photoexposed agarose thiols. The second procedure takes advantage of the femtomolar binding partners, human serum albumin (HSA) and albumin binding domain (ABD), which have K(D) values of ~10(-14) M. Here HSA-maleimide was chemically bound to photoexposed agarose thiols, and then the FGF2-ABD fusion protein was added to form a stable complex with the immobilized HSA. The use of orthogonal, physical binding pairs allows protein immobilization under mild conditions and can be broadly applied to any protein expressed as an ABD fusion.
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Affiliation(s)
- Ryan G Wylie
- Department of Chemistry, University of Toronto, 80 St George Street, Toronto, ON, Canada M5S 3H6
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46
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Ker EDF, Nain AS, Weiss LE, Wang J, Suhan J, Amon CH, Campbell PG. Bioprinting of growth factors onto aligned sub-micron fibrous scaffolds for simultaneous control of cell differentiation and alignment. Biomaterials 2011; 32:8097-107. [PMID: 21820736 DOI: 10.1016/j.biomaterials.2011.07.025] [Citation(s) in RCA: 160] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 07/08/2011] [Indexed: 11/30/2022]
Abstract
The capability to spatially control stem cell orientation and differentiation simultaneously using a combination of geometric cues that mimic structural aspects of native extracellular matrix (ECM) and biochemical cues such as ECM-bound growth factors (GFs) is important for understanding the organization and function of musculoskeletal tissues. Herein, oriented sub-micron fibers, which are morphologically similar to musculoskeletal ECM, were spatially patterned with GFs using an inkjet-based bioprinter to create geometric and biochemical cues that direct musculoskeletal cell alignment and differentiation in vitro in registration with fiber orientation and printed patterns, respectively. Sub-micron polystyrene fibers (diameter ~ 655 nm) were fabricated using a Spinneret-based Tunable Engineered Parameters (STEP) technique and coated with serum or fibrin. The fibers were subsequently patterned with tendon-promoting fibroblast growth factor-2 (FGF-2) or bone-promoting bone morphogenetic protein-2 (BMP-2) prior to seeding with mouse C2C12 myoblasts or C3H10T1/2 mesenchymal fibroblasts. Unprinted regions of STEP fibers showed myocyte differentiation while printed FGF-2 and BMP-2 patterns promoted tenocyte and osteoblast fates, respectively, and inhibited myocyte differentiation. Additionally, cells aligned along the fiber length. Functionalizing oriented sub-micron fibers with printed GFs provides instructive cues to spatially control cell fate and alignment to mimic native tissue organization and may have applications in regenerative medicine.
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Affiliation(s)
- Elmer D F Ker
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
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47
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Chirieleison SM, Bissell TA, Scelfo CC, Anderson JE, Li Y, Koebler DJ, Deasy BM. Automated live cell imaging systems reveal dynamic cell behavior. Biotechnol Prog 2011; 27:913-24. [PMID: 21692197 DOI: 10.1002/btpr.629] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 03/11/2011] [Indexed: 11/11/2022]
Abstract
Automated time-lapsed microscopy provides unique research opportunities to visualize cells and subcellular components in experiments with time-dependent parameters. As accessibility to these systems is increasing, we review here their use in cell science with a focus on stem cell research. Although the use of time-lapsed imaging to answer biological questions dates back nearly 150 years, only recently have the use of an environmentally controlled chamber and robotic stage controllers allowed for high-throughput continuous imaging over long periods at the cell and subcellular levels. Numerous automated imaging systems are now available from both companies that specialize in live cell imaging and from major microscope manufacturers. We discuss the key components of robots used for time-lapsed live microscopic imaging, and the unique data that can be obtained from image analysis. We show how automated features enhance experimentation by providing examples of uniquely quantified proliferation and migration live cell imaging data. In addition to providing an efficient system that drastically reduces man-hours and consumes fewer laboratory resources, this technology greatly enhances cell science by providing a unique dataset of temporal changes in cell activity.
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48
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Ker EDF, Chu B, Phillippi JA, Gharaibeh B, Huard J, Weiss LE, Campbell PG. Engineering spatial control of multiple differentiation fates within a stem cell population. Biomaterials 2011; 32:3413-22. [PMID: 21316755 DOI: 10.1016/j.biomaterials.2011.01.036] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Accepted: 01/13/2011] [Indexed: 12/22/2022]
Abstract
The capability to engineer microenvironmental cues to direct a stem cell population toward multiple fates, simultaneously, in spatially defined regions is important for understanding the maintenance and repair of multi-tissue units. We have previously developed an inkjet-based bioprinter to create patterns of solid-phase growth factors (GFs) immobilized to an extracellular matrix (ECM) substrate, and applied this approach to drive muscle-derived stem cells toward osteoblasts 'on-pattern' and myocytes 'off-pattern' simultaneously. Here this technology is extended to spatially control osteoblast, tenocyte and myocyte differentiation simultaneously. Utilizing immunofluorescence staining to identify tendon-promoting GFs, fibroblast growth factor-2 (FGF-2) was shown to upregulate the tendon marker Scleraxis (Scx) in C3H10T1/2 mesenchymal fibroblasts, C2C12 myoblasts and primary muscle-derived stem cells, while downregulating the myofibroblast marker α-smooth muscle actin (α-SMA). Quantitative PCR studies indicated that FGF-2 may direct stem cells toward a tendon fate via the Ets family members of transcription factors such as pea3 and erm. Neighboring patterns of FGF-2 and bone morphogenetic protein-2 (BMP-2) printed onto a single fibrin-coated coverslip upregulated Scx and the osteoblast marker ALP, respectively, while non-printed regions showed spontaneous myotube differentiation. This work illustrates spatial control of multi-phenotype differentiation and may have potential in the regeneration of multi-tissue units.
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Affiliation(s)
- Elmer D F Ker
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213, USA
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Baraniak PR, Nelson DM, Leeson CE, Katakam AK, Friz JL, Cress DE, Hong Y, Guan J, Wagner WR. Spatial control of gene expression within a scaffold by localized inducer release. Biomaterials 2011; 32:3062-71. [PMID: 21269687 DOI: 10.1016/j.biomaterials.2010.12.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 12/26/2010] [Indexed: 12/31/2022]
Abstract
Gene expression can be controlled in genetically modified cells by employing an inducer/promoter system where presence of the inducer molecule regulates the timing and level of gene expression. By applying the principles of controlled release, it should be possible to control gene expression on a biomaterial surface by the presence or absence of inducer release from the underlying material matrix, thus avoiding alternative techniques that rely upon uptake of relatively labile DNA from material surfaces. To evaluate this concept, a modified ecdysone-responsive gene expression system was transfected into B16 murine cells and the ability of an inducer ligand, which was released from elastomeric poly(ester urethane) urea (PEUU), to initiate gene expression was studied. The synthetic inducer ligand was first loaded into PEUU to demonstrate extended release of the bioactive molecule at various loading densities over a one year period in vitro. Patterning films of PEUU variably-loaded with inducer resulted in spatially controlled cell expression of the gene product (green fluorescent protein, GFP). In porous scaffolds made from PEUU by salt leaching, where the central region was exclusively loaded with inducer, cells expressed GFP predominately in the loaded central regions whereas expression was minimal in outer regions where ligand was omitted. This scaffold system may ultimately provide a means to precisely control progenitor cell commitment in a spatially-defined manner in vivo for soft tissue repair and regeneration.
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Affiliation(s)
- Priya R Baraniak
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
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Miller ED, Li K, Kanade T, Weiss LE, Walker LM, Campbell PG. Spatially directed guidance of stem cell population migration by immobilized patterns of growth factors. Biomaterials 2011; 32:2775-85. [PMID: 21272933 DOI: 10.1016/j.biomaterials.2010.12.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Accepted: 12/01/2010] [Indexed: 01/08/2023]
Abstract
We investigated how engineered gradients of exogenous growth factors, immobilized to an extracellular matrix material, influence collective guidance of stem cell populations over extended time (>1 day) and length (>1 mm) scales in vitro. Patterns of low-to-high, high-to-low, and uniform concentrations of heparin-binding epidermal growth factor-like growth factor were inkjet printed at precise locations on fibrin substrates. Proliferation and migration responses of mesenchymal stem cells seeded at pattern origins were observed with time-lapse video microscopy and analyzed using both manual and automated computer vision-based cell tracking techniques. Based on results of established chemotaxis studies, we expected that the low-to-high gradient would most effectively direct cell guidance away from the cell source. All printed patterns, however, were found to direct net collective cell guidance with comparable responses. Our analysis revealed that collective "cell diffusion" down a cell-to-cell confinement gradient originating at the cell starting lines and not the net sum of directed individual cell migration up a growth factor concentration gradient is the principal driving force for directing mesenchymal stem cell population outgrowth from a cell source. These results suggest that simple uniform distributions of growth factors immobilized to an extracellular matrix material may be as effective in directing cell migration into a wound site as more complex patterns with concentration gradients.
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Affiliation(s)
- Eric D Miller
- Department of Biomedical Engineering, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA 15213, USA
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