1
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Nakayama Y, Iwai R. Development of Subcutaneous SSEA3- or SSEA4-Positive Cell Capture Device. Bioengineering (Basel) 2024; 11:585. [PMID: 38927821 PMCID: PMC11200914 DOI: 10.3390/bioengineering11060585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 05/26/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Securing high-quality cell sources is important in regenerative medicine. In this study, we developed a device that can accumulate autologous stem cells in the body. When small wire-assembled molds were embedded in the dorsal subcutaneous pouches of beagles for several weeks, collagen-based tissues with minimal inflammation formed inside the molds. At 3 weeks of embedding, the outer areas of the tissues were composed of immature type III collagen with large amounts of cells expressing SSEA3 or SSEA4 markers, in addition to growth factors such as HGF or VEGF. When separated from the tissues by collagenase treatment, approximately four million cells with a proportion of 70% CD90-positive and 20% SSEA3- or SSEA4-positive cells were recovered from the single mold. The cells could differentiate into bone or cartilage cells. The obtained cell-containing tissues are expected to have potential as therapeutic materials or cell sources in regenerative medicine.
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Affiliation(s)
| | - Ryosuke Iwai
- Institute of Frontier Science and Technology, Okayama University of Science, Okayama 700-0005, Japan;
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2
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Ning LJ, Cui J, He SK, Hu RN, Yao X, Zhang Y, Ding W, Zhang YJ, Luo JC, Qin TW. Constructing a highly bioactive tendon-regenerative scaffold by surface modification of tissue-specific stem cell derived extracellular matrix. Regen Biomater 2022; 9:rbac020. [PMID: 35480863 PMCID: PMC9036902 DOI: 10.1093/rb/rbac020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/28/2022] [Accepted: 03/06/2022] [Indexed: 02/05/2023] Open
Abstract
Developing highly bioactive scaffold materials to promote stem cell migration, proliferation and tissue-specific differentiation is a crucial requirement in current tissue engineering and regenerative medicine. Our previous work has demonstrated that the decellularized tendon slices (DTSs) are able to promote stem cell proliferation and tenogenic differentiation in vitro and show certain pro-regenerative capacity for rotator cuff tendon regeneration in vivo. In this study, we present a strategy to further improve the bioactivity of the DTSs for constructing a novel highly bioactive tendon-regenerative scaffold by surface modification of tendon-specific stem cell-derived extracellular matrix (tECM), which is expected to greatly enhance the capacity of scaffold material in regulating stem cell behavior, including migration, proliferation and tenogenic differentiation. We prove that the modification of tECM could change the highly aligned surface topographical cues of the DTSs, retain the surface stiffness of the DTSs and significantly increase the content of multiple ECM components in the tECM-DTSs. As a result, the tECM-DTSs dramatically enhance the migration, proliferation as well as tenogenic differentiation of rat bone marrow-derived stem cells compared with the DTSs. Collectively, this strategy would provide a new way for constructing ECM-based biomaterials with enhanced bioactivity for in situ tendon regeneration applications. ![]()
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Affiliation(s)
- Liang-Ju Ning
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
| | - Jing Cui
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
| | - Shu-Kun He
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, P.R. China
| | - Ruo-Nan Hu
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
| | - Xuan Yao
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
| | - Yi Zhang
- Core Facility, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, P.R. China
| | - Wei Ding
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
| | - Yan-Jing Zhang
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
- Core Facility, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, P.R. China
| | - Jing-Cong Luo
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
| | - Ting-Wu Qin
- Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan, 610041, P.R. China
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3
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Divakar P, Reeves J, Gong J, Kolling FW, Jack Hoopes P, Wegst UG. High-plex expression profiling reveals that implants drive spatiotemporal protein production and innate immune activation for tissue repair. Acta Biomater 2022; 138:342-350. [PMID: 34673228 DOI: 10.1016/j.actbio.2021.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 10/08/2021] [Accepted: 10/12/2021] [Indexed: 11/01/2022]
Abstract
Surprisingly little clarity exists concerning effects of biomaterial properties on spatially localized protein expression, which drives implant success. Wound healing and tissue regeneration must be optimally supported by the implant, adsorbed proteins, immune cells, and fibroblasts; cells determine repair and functional recovery through protein production and regulation. However, not yet fully understood is how implants differentially drive spatial quantities of individual proteins both within the implant interior and the tissue surrounding it. Here we apply GeoMxⓇ digital spatial profiling to site-specifically investigate protein production in porous implants. Data is collected on the location and quantity of 40+ proteins from formalin-fixed, paraffin-embedded tissue slides of anisotropic tissue scaffolds (n = 18) with differing pore sizes (35 µm, 53 µm) and implantation durations (2, 14, 28 days); matching bulk gene expression data (700+ genes) is measured for identical implants. Notably, we discover fundamental spatial relationships in protein localization that in both the implant interior and the exterior are either uniquely independent or dependent of implant microstructure: dendritic cell marker CD11c and fibronectin significantly dominate the scaffold interior, while cell-to-cell adhesion marker CD34 and anti-inflammatory M2 polarization marker CD163 localize in the exterior. Lastly, collating spatial and bulk information, unique spatiotemporal expression patterns are identified for markers such as fibronectin, which are only uncoverable through spatial profiling and are otherwise hidden in bulk expression results. Together, these discoveries illustrate the critical importance of quantifying spatial expression patterns for implants, facilitating a paradigm shift in the iterative design, mechanistic understanding, and rapid assessment of biomaterials. STATEMENT OF SIGNIFICANCE: Spatial localization and expression of proteins, which determine implant success, are not fully understood because quantitative high-plex profiling is challenging. Applying GeoMxⓇ digital spatial profiling to site-specifically investigate protein production in porous implants, data is collected on the location and quantity of 40+ protein targets from tissue scaffolds with differing pore sizes (35 µm, 53 µm) and implantation durations (2, 14, 28 days). Collecting in parallel matched bulk gene expression data (700+ genes) for identical implants, we discover significant spatiotemporal expression patterns that remain otherwise hidden in differential bulk results. This new approach for the rapid assessment of biomaterials offers an enhanced mechanistic understanding and enables the tailoring of implants for superior regenerative outcomes.
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4
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Sato Y, Iwai R, Fukushima M, Nakayama Y. Involvement of somatic stem cells in encapsulation of foreign-body reaction in canine subcutaneous Biotube tissue formation. J Biosci Bioeng 2021; 132:524-530. [PMID: 34420897 DOI: 10.1016/j.jbiosc.2021.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 11/30/2022]
Abstract
Generally, the thickness of tubular tissues formed from silicone rods through encapsulation of the foreign-body reaction is less than approximately 0.2 mm. On the other hand, it is unclear how hollow cylindrical molds can provide thick tubular tissues, known as Biotubes, with a thickness exceeding 1 mm, during in-body tissue architecture (iBTA) using encapsulation. In this study, histological and structural analyses were performed to understand the reason for the formation of thick mold-based Biotubes. Molds were assembled with a gap between a silicone rod and a stainless-steel cylinder and were embedded into the dorsal subcutaneous pouches of beagles for 2 or 4 weeks. Thick Biotubes were obtained from the harvested mold. The histological analysis showed that the lumen side of the thick Biotubes consisted primarily of type I collagen fibers and α-smooth muscle actin-positive cells, similar to the original rod-based thin Biotubes formed only from silicone rods. Interestingly, the outer region of the thick Biotubes was an immature connective tissue consisting of type III collagen, including primitive somatic stem cells expressing CD90 and SSEA4. These stem cells may have contributed to the formation of the thick-walled Biotubes by differentiating into other cell types and through growth factor production. Because of the potential tissue-repair ability of these stem cells, iBTA could be useful for elucidating the regeneration process, remodeling the physiology/pathology of tissue defects/damage, and cell acquisition. This technology can provide autologous stem cells without in vitro cell culture. Moreover, thick-walled Biotubes may be useful as an alternative stem cell-containing material in regenerative medicine.
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Affiliation(s)
- Yasushi Sato
- Osaka Laboratory, Biotube Co., Ltd., 3-10-1 Senriyama-higashi, Suita, Osaka 565-0842, Japan; Institute of Frontier Science and Technology, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama, Okayama 700-0005, Japan.
| | - Ryosuke Iwai
- Institute of Frontier Science and Technology, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama, Okayama 700-0005, Japan
| | - Masanori Fukushima
- Translational Research Center for Medical Innovation, Foundation for Biomedical Research and Innovation at Kobe, 2-2 Minatojima Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Yasuhide Nakayama
- Osaka Laboratory, Biotube Co., Ltd., 3-10-1 Senriyama-higashi, Suita, Osaka 565-0842, Japan
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5
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Rinoldi C, Lanzi M, Fiorelli R, Nakielski P, Zembrzycki K, Kowalewski T, Urbanek O, Grippo V, Jezierska-Woźniak K, Maksymowicz W, Camposeo A, Bilewicz R, Pisignano D, Sanai N, Pierini F. Three-Dimensional Printable Conductive Semi-Interpenetrating Polymer Network Hydrogel for Neural Tissue Applications. Biomacromolecules 2021; 22:3084-3098. [PMID: 34151565 PMCID: PMC8462755 DOI: 10.1021/acs.biomac.1c00524] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
![]()
Intrinsically
conducting polymers (ICPs) are widely used to fabricate
biomaterials; their application in neural tissue engineering, however,
is severely limited because of their hydrophobicity and insufficient
mechanical properties. For these reasons, soft conductive polymer
hydrogels (CPHs) are recently developed, resulting in a water-based
system with tissue-like mechanical, biological, and electrical properties.
The strategy of incorporating ICPs as a conductive component into
CPHs is recently explored by synthesizing the hydrogel around ICP
chains, thus forming a semi-interpenetrating polymer network (semi-IPN).
In this work, a novel conductive semi-IPN hydrogel is designed and
synthesized. The hybrid hydrogel is based on a poly(N-isopropylacrylamide-co-N-isopropylmethacrylamide)
hydrogel where polythiophene is introduced as an ICP to provide the
system with good electrical properties. The fabrication of the hybrid
hydrogel in an aqueous medium is made possible by modifying and synthesizing
the monomers of polythiophene to ensure water solubility. The morphological,
chemical, thermal, electrical, electrochemical, and mechanical properties
of semi-IPNs were fully investigated. Additionally, the biological
response of neural progenitor cells and mesenchymal stem cells in
contact with the conductive semi-IPN was evaluated in terms of neural
differentiation and proliferation. Lastly, the potential of the hydrogel
solution as a 3D printing ink was evaluated through the 3D laser printing
method. The presented results revealed that the proposed 3D printable
conductive semi-IPN system is a good candidate as a scaffold for neural
tissue applications.
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Affiliation(s)
- Chiara Rinoldi
- Department of Biosystems and Soft Matter, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw 02-106, Poland
| | - Massimiliano Lanzi
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum University of Bologna, Bologna 40136, Italy
| | - Roberto Fiorelli
- Ivy Brain Tumor Center, Barrow Neurological Institute, Phoenix, Arizona 85013, United States
| | - Paweł Nakielski
- Department of Biosystems and Soft Matter, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw 02-106, Poland
| | - Krzysztof Zembrzycki
- Department of Biosystems and Soft Matter, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw 02-106, Poland
| | - Tomasz Kowalewski
- Department of Biosystems and Soft Matter, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw 02-106, Poland
| | - Olga Urbanek
- Laboratory of Polymers and Biomaterials, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw 02-106, Poland
| | - Valentina Grippo
- Faculty of Chemistry, University of Warsaw, Warsaw 02-093, Poland
| | - Katarzyna Jezierska-Woźniak
- Department of Neurology and Neurosurgery, University of Warmia and Mazury in Olsztyn, Olsztyn 11-041, Poland
| | - Wojciech Maksymowicz
- Department of Neurology and Neurosurgery, University of Warmia and Mazury in Olsztyn, Olsztyn 11-041, Poland
| | - Andrea Camposeo
- NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa 56127, Italy
| | - Renata Bilewicz
- Faculty of Chemistry, University of Warsaw, Warsaw 02-093, Poland
| | - Dario Pisignano
- NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa 56127, Italy.,Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - Nader Sanai
- Ivy Brain Tumor Center, Barrow Neurological Institute, Phoenix, Arizona 85013, United States
| | - Filippo Pierini
- Department of Biosystems and Soft Matter, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw 02-106, Poland
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6
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Yang L, Pijuan-Galito S, Rho HS, Vasilevich AS, Eren AD, Ge L, Habibović P, Alexander MR, de Boer J, Carlier A, van Rijn P, Zhou Q. High-Throughput Methods in the Discovery and Study of Biomaterials and Materiobiology. Chem Rev 2021; 121:4561-4677. [PMID: 33705116 PMCID: PMC8154331 DOI: 10.1021/acs.chemrev.0c00752] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Indexed: 02/07/2023]
Abstract
The complex interaction of cells with biomaterials (i.e., materiobiology) plays an increasingly pivotal role in the development of novel implants, biomedical devices, and tissue engineering scaffolds to treat diseases, aid in the restoration of bodily functions, construct healthy tissues, or regenerate diseased ones. However, the conventional approaches are incapable of screening the huge amount of potential material parameter combinations to identify the optimal cell responses and involve a combination of serendipity and many series of trial-and-error experiments. For advanced tissue engineering and regenerative medicine, highly efficient and complex bioanalysis platforms are expected to explore the complex interaction of cells with biomaterials using combinatorial approaches that offer desired complex microenvironments during healing, development, and homeostasis. In this review, we first introduce materiobiology and its high-throughput screening (HTS). Then we present an in-depth of the recent progress of 2D/3D HTS platforms (i.e., gradient and microarray) in the principle, preparation, screening for materiobiology, and combination with other advanced technologies. The Compendium for Biomaterial Transcriptomics and high content imaging, computational simulations, and their translation toward commercial and clinical uses are highlighted. In the final section, current challenges and future perspectives are discussed. High-throughput experimentation within the field of materiobiology enables the elucidation of the relationships between biomaterial properties and biological behavior and thereby serves as a potential tool for accelerating the development of high-performance biomaterials.
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Affiliation(s)
- Liangliang Yang
- University
of Groningen, W. J. Kolff Institute for Biomedical Engineering and
Materials Science, Department of Biomedical Engineering, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Sara Pijuan-Galito
- School
of Pharmacy, Biodiscovery Institute, University
of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Hoon Suk Rho
- Department
of Instructive Biomaterials Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Aliaksei S. Vasilevich
- Department
of Biomedical Engineering, Eindhoven University
of Technology, 5600 MB Eindhoven, The Netherlands
| | - Aysegul Dede Eren
- Department
of Biomedical Engineering, Eindhoven University
of Technology, 5600 MB Eindhoven, The Netherlands
| | - Lu Ge
- University
of Groningen, W. J. Kolff Institute for Biomedical Engineering and
Materials Science, Department of Biomedical Engineering, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Pamela Habibović
- Department
of Instructive Biomaterials Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Morgan R. Alexander
- School
of Pharmacy, Boots Science Building, University
of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Jan de Boer
- Department
of Biomedical Engineering, Eindhoven University
of Technology, 5600 MB Eindhoven, The Netherlands
| | - Aurélie Carlier
- Department
of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Patrick van Rijn
- University
of Groningen, W. J. Kolff Institute for Biomedical Engineering and
Materials Science, Department of Biomedical Engineering, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Qihui Zhou
- Institute
for Translational Medicine, Department of Stomatology, The Affiliated
Hospital of Qingdao University, Qingdao
University, Qingdao 266003, China
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7
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Abstract
The shortage of organ donors has contributed to the rapid development of cell-based therapy in which stem cells are transplanted and administered to repair or regenerate damaged tissues or organs. The common sources of stem cells are embryonic, mesenchymal, stromal, and induced pluripotent cells. Despite the popularity of stem cell therapy, evaluation of the therapeutic efficiency of transplanted stem cells and their tracking in vivo remains a major challenge. Current imaging modalities such as magnetic resonance imaging, radionuclide imaging, and positron emission tomography have certain limitations such as toxicity, shorter circulation time, and higher cost. Here, we describe near-infrared imaging methods to track and monitor stem cell recruitment to the site of injury.
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8
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Niu Y, Wang L, Yu N, Xing P, Wang Z, Zhong Z, Feng Y, Dong L, Wang C. An "all-in-one" scaffold targeting macrophages to direct endogenous bone repair in situ. Acta Biomater 2020; 111:153-169. [PMID: 32447062 DOI: 10.1016/j.actbio.2020.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/09/2020] [Accepted: 05/14/2020] [Indexed: 12/25/2022]
Abstract
Scaffolds for tissue repair are designed in an increasingly complicated manner to meet multi-facet biological needs during the healing process. However, overly sophisticated design, especially the use of multiple components and delivery of exogenous cells, hampers the bench-to-bedside translation. Here, a multi-functional - yet mono-compositional - bioactive scaffold is devised to mediate the full-range, endogenous bone repair. Based on immunoactivity screening, a chemically-modified glucomannan polysaccharide is selected and processed into an anisotropic porous scaffold, which accurately stimulates macrophages to produce pro-regenerative cytokines. These cytokines effectively enhance the recruitment ("R") and induced osteogenesis ("IO") of the bone progenitor cells in situ. Meanwhile, the anisotropic porosity and carbohydrate signal of the scaffold facilitate differential adhesion ("A") and distribution ("D") of the macrophages and bone progenitor cells - enabling the former's accumulation at the surface while encouraging the latter's infiltration into the scaffold. Implanted in a rat calvarial defect model, this "RADIO" system effectively promotes healing over 12 weeks, with the obvious formation of hard callus through the scaffold. In summary, RADIO integrates multiple functions into one single scalable system ("all-in-one") to govern the dynamic bone-repair process, by harnessing the power of host macrophages. RADIO represents an open platform to solving the long-lasting complexity-versus-simplicity dilemma in biomaterials design. STATEMENT OF SIGNIFICANCE: Biomaterials as versatile tools for tissue repair are becoming increasingly complicated, yet overly sophisticated design - especially the use of multiple components, exogenous cells, and overdosed growth factors - hampers their clinical application. The pre-requisite for designing a successful integrative scaffold is to identify an inherent biological target responding to biomaterial signals, thereby efficiently and safely promoting tissue repair via the endogenous healing capability instead of extra multifarious biochemical components. For bone regeneration, the pivotal regulator is macrophages. Through activating host macrophages, our single-component scaffold system coordinates the entire bone regenerative cascade in situ and induces successful bone regeneration in a calvarial defect model. This scaffold represents a scalable and multi-functional approach to effectively simplify the sophisticated design in regenerative medicine.
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Affiliation(s)
- Yiming Niu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Macau SAR, China
| | - Lintao Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210093, China
| | - Na Yu
- National Dental Centre Singapore, 5 Second Hospital Ave, 168938, Singapore; Duke-NUS Medical School, 8 College Road, 169857, Singapore
| | - Panfei Xing
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Macau SAR, China
| | - Zhenzhen Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Macau SAR, China
| | - Zhangfeng Zhong
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Macau SAR, China
| | - Yanxian Feng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Macau SAR, China
| | - Lei Dong
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210093, China
| | - Chunming Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Macau SAR, China.
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9
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Huang Y, Hakamivala A, Li S, Nair A, Saxena R, Hsieh JT, Tang L. Chemokine releasing particle implants for trapping circulating prostate cancer cells. Sci Rep 2020; 10:4433. [PMID: 32157115 PMCID: PMC7064596 DOI: 10.1038/s41598-020-60696-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 02/04/2020] [Indexed: 12/19/2022] Open
Abstract
Prostate cancer (PCa) is the most prevalent cancer in U.S. men and many other countries. Although primary PCa can be controlled with surgery or radiation, treatment options of preventing metastatic PCa are still limited. To develop a new treatment of eradicating metastatic PCa, we have created an injectable cancer trap that can actively recruit cancer cells in bloodstream. The cancer trap is composed of hyaluronic acid microparticles that have good cell and tissue compatibility and can extend the release of chemokines to 4 days in vitro. We find that erythropoietin (EPO) and stromal derived factor-1α can attract PCa in vitro. Animal results show that EPO-releasing cancer trap attracted large number of circulating PCa and significantly reduced cancer spreading to other organs compared with controls. These results support that cancer trap may serve as a unique device to sequester circulating PCa cells and subsequently reduce distant metastasis.
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Affiliation(s)
- YiHui Huang
- Department of Bioengineering, the University of Texas at Arlington, Arlington, Texas, 76019, USA
| | - Amirhossein Hakamivala
- Department of Bioengineering, the University of Texas at Arlington, Arlington, Texas, 76019, USA
| | - Shuxin Li
- Department of Bioengineering, the University of Texas at Arlington, Arlington, Texas, 76019, USA
| | - Ashwin Nair
- Department of Bioengineering, the University of Texas at Arlington, Arlington, Texas, 76019, USA
| | - Ramesh Saxena
- Division of Nephrology, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd, Dallas, TX, 75390, USA
| | - Jer-Tsong Hsieh
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Liping Tang
- Department of Bioengineering, the University of Texas at Arlington, Arlington, Texas, 76019, USA.
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
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10
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Lopez-Silva TL, Leach DG, Azares A, Li IC, Woodside DG, Hartgerink JD. Chemical functionality of multidomain peptide hydrogels governs early host immune response. Biomaterials 2020; 231:119667. [PMID: 31855625 PMCID: PMC7049098 DOI: 10.1016/j.biomaterials.2019.119667] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 12/03/2019] [Accepted: 12/03/2019] [Indexed: 12/21/2022]
Abstract
Multidomain Peptide (MDP) hydrogels are nanofibrous materials with many potential biomedical applications. The peptide sequence design of these materials offers high versatility and allows for the incorporation of various chemical functionalities into the nanofibrous scaffold. It is known that host response to biomaterials is strongly affected by factors such as size, shape, stiffness, and chemistry. However, there is a lack of fundamental understanding of the host response to different MDP hydrogels. In particular, it is unknown what effect the chemical functionality displayed on the nanofiber has on biological activity. Here we evaluated the early inflammatory host response to four MDP hydrogels displaying amines, guanidinium ions, and carboxylates in a subcutaneous injection model. While all the studied peptide materials possess similar nanostructure and physical properties, they trigger markedly different inflammatory responses. These were characterized by immunophenotyping of the cellular infiltrate using multi-color flow cytometry. The negatively-charged peptides elicit minimal inflammation characterized by tissue-resident macrophage infiltration, fast remodeling, and no collagen deposition or blood vessel formation within the implants. In contrast, the positively-charged peptides are highly infiltrated by immune cells, are remodeled at a slower rate, promote angiogenesis, and result in a high degree of collagen deposition. The presence of dynamic cell phenotypes characterizes the inflammation caused by the lysine-based peptide, including inflammatory monocytes, macrophages, and lymphoid cells, which is seen to be resolving over time. The arginine-based hydrogel shows higher inflammatory response with a persistent and significant infiltration of polymorphonuclear myeloid-derived cells, even ten days after implantation. This understanding of the immune response to peptide biomaterials improves our ability to design effective materials and to tailor their use for specific biomedical applications.
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Affiliation(s)
| | - David G Leach
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
| | - Alon Azares
- Department of Molecular Cardiology, Texas Heart Institute, Houston, TX, 77030, USA
| | - I-Che Li
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
| | - Darren G Woodside
- Department of Molecular Cardiology, Texas Heart Institute, Houston, TX, 77030, USA
| | - Jeffrey D Hartgerink
- Department of Chemistry, Rice University, Houston, TX, 77005, USA; Department of Bioengineering, Rice University, Houston, TX, 77005, USA.
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11
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Vu H, Zhou J, Huang Y, Hakamivala A, Khang MK, Tang L. Development of a dual-wavelength fluorescent nanoprobe for in vivo and in vitro cell tracking consecutively. Bioorg Med Chem 2019; 27:1855-1862. [PMID: 30910476 PMCID: PMC6469702 DOI: 10.1016/j.bmc.2019.03.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/12/2019] [Accepted: 03/19/2019] [Indexed: 11/22/2022]
Abstract
Many imaging probes have been developed for a wide variety of imaging modalities. However, no optical imaging probe could be utilized for both microscopic and whole animal imaging. To fill the gap, the dual-wavelength fluorescent imaging nanoprobe was developed to simultaneously carry both visible-range fluorescent dye and near-infrared (NIR) dye. Emission scan confirms that the nanoprobe exhibits two separate peaks with strong fluorescent intensity in both visible and NIR ranges. Furthermore, the dual-wavelength fluorescent nanoprobe has high photostability and colloidal stability, as well as long shelf-life. In vitro cell culture experiments show that the nanoprobe has the ability to label different types of cells (namely, esophageal, prostate, fibroblast and macrophage cell) for fluorescent microscope imaging. More importantly, cell tracking experiments confirm that cell migration and distribution in various organs can be tracked in real time using in vivo whole-body NIR imaging and in vitro microscopic imaging, respectively.
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Affiliation(s)
- Hong Vu
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA; Progenitec Inc., 7301 West Pioneer Parkway Suite B, Arlington, TX 76013, USA
| | - Jun Zhou
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA
| | - Yihui Huang
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA
| | | | - Min Kyung Khang
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA; Chemistry and Biochemistry Department, University of Texas at Arlington, Arlington, TX, USA
| | - Liping Tang
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA.
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12
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Li L, Lu H, Zhao Y, Luo J, Yang L, Liu W, He Q. Functionalized cell-free scaffolds for bone defect repair inspired by self-healing of bone fractures: A review and new perspectives. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:1241-1251. [PMID: 30813005 DOI: 10.1016/j.msec.2019.01.075] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 12/15/2018] [Accepted: 01/17/2019] [Indexed: 12/20/2022]
Abstract
Studies have demonstrated that scaffolds, a component of bone tissue engineering, play an indispensable role in bone repair. However, these scaffolds involving ex-vivo cultivated cells seeded have disadvantages in clinical practice, such as limited autologous cells, time-consuming cell expansion procedures, low survival rate and immune-rejection issues. To overcome these disadvantages, recent focus has been placed on the design of functionalized cell-free scaffolds, instead of cell-seeded scaffolds, that can reduplicate the natural self-healing events of bone fractures, such as inflammation, cell recruitment, vascularization, and osteogenic differentiation. New approaches and applications in tissue engineering and regenerative medicine continue to drive the development of functionalized cell-free scaffolds for bone repair. In this review, the self-healing processes were highlighted, and approaches for the functionalization were summarized. Also, ongoing efforts and breakthroughs in the field of functionalization for bone defect repair were discussed. Finally, a brief summery and new perspectives for functionalization strategies were presented to provide guidelines for further efforts in the design of bioinspired cell-free scaffolds.
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Affiliation(s)
- Li Li
- Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, PR China; Orthopedic Department, Southwest Hospital, Army Medical University, Chongqing 400038, PR China; Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, PR China; Orthopedic Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, PR China
| | - Hongwei Lu
- Orthopedic Department, Southwest Hospital, Army Medical University, Chongqing 400038, PR China
| | - Yulan Zhao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, PR China
| | - Jiangming Luo
- Center of Joint Surgery, Southwest Hospital, Army Medical University, Chongqing 400038, PR China
| | - Li Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, PR China
| | - Wanqian Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, PR China.
| | - Qingyi He
- Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, PR China; Orthopedic Department, Southwest Hospital, Army Medical University, Chongqing 400038, PR China; Orthopedic Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, PR China.
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13
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Khang MK, Zhou J, Huang Y, Hakamivala A, Tang L. Preparation of a novel injectable in situ-gelling nanoparticle with applications in controlled protein release and cancer cell entrapment. RSC Adv 2018; 8:34625-34633. [PMID: 35548629 PMCID: PMC9087364 DOI: 10.1039/c8ra06589f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 12/11/2018] [Accepted: 10/02/2018] [Indexed: 11/21/2022] Open
Abstract
Temperature sensitive injectable hydrogels have been used as drug/protein carriers for a variety of pharmaceutical applications. Oligo(ethylene glycol) methacrylate (OEGMA) monomers with varying ethylene oxide chain lengths have been used for the synthesis of in situ forming hydrogel. In this study, a new series of thermally induced gelling hydrogel nanoparticles (PMOA hydrogel nanoparticles) was developed by copolymerization with di(ethylene glycol) methyl ether methacrylate (MEO2MA), poly(ethylene glycol) methyl ether methacrylate (300 g mol−1, OEGMA300), and acrylic acid (AAc). The effects of acrylic acid content on the physical, chemical, and biological properties of the nanoparticle-based hydrogels were investigated. Due to its high electrostatic properties, addition of AAc increases LCST as well as gelation temperature. Further, using Cy5-labelled bovine serum albumin and erythropoietin (Epo) as model drugs, studies have shown that the thermogelling hydrogels have the ability to tune the release rate of these proteins in vitro. Finally, the ability of Epo releasing hydrogels to recruit prostate cancer cells was assessed in vivo. Overall, our results support that this new series of thermally induced gelling systems can be used as protein control releasing vehicles and cancer cell traps. At body temperature, thermosensitive nanoparticles release erythropoietin to lure metastatic cancer cells.![]()
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Affiliation(s)
- Min Kyung Khang
- Chemistry and Biochemistry Department
- University of Texas at Arlington
- Arlington
- USA
- Bioengineering Department
| | - Jun Zhou
- Bioengineering Department
- University of Texas at Arlington
- Arlington
- USA
| | - Yihui Huang
- Bioengineering Department
- University of Texas at Arlington
- Arlington
- USA
| | | | - Liping Tang
- Bioengineering Department
- University of Texas at Arlington
- Arlington
- USA
- Department of Biomedical Science and Environmental Biology
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14
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Caires HR, Esteves T, Quelhas P, Barbosa MA, Navarro M, Almeida CR. Macrophage interactions with polylactic acid and chitosan scaffolds lead to improved recruitment of human mesenchymal stem/stromal cells: a comprehensive study with different immune cells. J R Soc Interface 2017; 13:rsif.2016.0570. [PMID: 27628173 DOI: 10.1098/rsif.2016.0570] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 08/23/2016] [Indexed: 01/07/2023] Open
Abstract
Despite the importance of immune cell-biomaterial interactions for the regenerative outcome, few studies have investigated how distinct three-dimensional biomaterials modulate the immune cell-mediated mesenchymal stem/stromal cells (MSC) recruitment and function. Thus, this work compares the response of varied primary human immune cell populations triggered by different model scaffolds and describes its functional consequence on recruitment and motility of bone marrow MSC. It was found that polylactic acid (PLA) and chitosan scaffolds lead to an increase in the metabolic activity of macrophages but not of peripheral blood mononuclear cells (PBMC), natural killer (NK) cells or monocytes. PBMC and NK cells increase their cell number in PLA scaffolds and express a secretion profile that does not promote MSC recruitment. Importantly, chitosan increases IL-8, MIP-1, MCP-1 and RANTES secretion by macrophages while PLA stimulates IL-6, IL-8 and MCP-1 production, all chemokines that can lead to MSC recruitment. This secretion profile of macrophages in contact with biomaterials correlates with the highest MSC invasion. Furthermore, macrophages enhance stem cell motility within chitosan scaffolds by 44% but not in PLA scaffolds. Thus, macrophages are the cells that in contact with engineered biomaterials become activated to secrete bioactive molecules that stimulate MSC recruitment.
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Affiliation(s)
- Hugo R Caires
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal INEB-Instituto de Engenharia Biomédica, Porto, Portugal ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Tiago Esteves
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal INEB-Instituto de Engenharia Biomédica, Porto, Portugal Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
| | - Pedro Quelhas
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal INEB-Instituto de Engenharia Biomédica, Porto, Portugal
| | - Mário A Barbosa
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal INEB-Instituto de Engenharia Biomédica, Porto, Portugal ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Melba Navarro
- International Center for Numerical Methods in Engineering (CIMNE), Edificio Nexus (103) Carrer del Gran Capità, 2-4, 08034 Barcelona, Spain
| | - Catarina R Almeida
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal INEB-Instituto de Engenharia Biomédica, Porto, Portugal Department of Medical Sciences and Institute for Biomedicine-iBiMED, University of Aveiro, 3810-193 Aveiro, Portugal
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15
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Pacelli S, Basu S, Whitlow J, Chakravarti A, Acosta F, Varshney A, Modaresi S, Berkland C, Paul A. Strategies to develop endogenous stem cell-recruiting bioactive materials for tissue repair and regeneration. Adv Drug Deliv Rev 2017; 120:50-70. [PMID: 28734899 PMCID: PMC5705585 DOI: 10.1016/j.addr.2017.07.011] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 07/05/2017] [Accepted: 07/16/2017] [Indexed: 02/07/2023]
Abstract
A leading strategy in tissue engineering is the design of biomimetic scaffolds that stimulate the body's repair mechanisms through the recruitment of endogenous stem cells to sites of injury. Approaches that employ the use of chemoattractant gradients to guide tissue regeneration without external cell sources are favored over traditional cell-based therapies that have limited potential for clinical translation. Following this concept, bioactive scaffolds can be engineered to provide a temporally and spatially controlled release of biological cues, with the possibility to mimic the complex signaling patterns of endogenous tissue regeneration. Another effective way to regulate stem cell activity is to leverage the inherent chemotactic properties of extracellular matrix (ECM)-based materials to build versatile cell-instructive platforms. This review introduces the concept of endogenous stem cell recruitment, and provides a comprehensive overview of the strategies available to achieve effective cardiovascular and bone tissue regeneration.
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Affiliation(s)
- Settimio Pacelli
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.
| | - Sayantani Basu
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.
| | - Jonathan Whitlow
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.
| | - Aparna Chakravarti
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.
| | - Francisca Acosta
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.
| | - Arushi Varshney
- Department of Human Genetics, University of Michigan, Ann Arbor, MI, USA.
| | - Saman Modaresi
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.
| | - Cory Berkland
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA; Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, KS, USA.
| | - Arghya Paul
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.
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16
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In vivo engineering of bone tissues with hematopoietic functions and mixed chimerism. Proc Natl Acad Sci U S A 2017; 114:5419-5424. [PMID: 28484009 DOI: 10.1073/pnas.1702576114] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Synthetic biomimetic matrices with osteoconductivity and osteoinductivity have been developed to regenerate bone tissues. However, whether such systems harbor donor marrow in vivo and support mixed chimerism remains unknown. We devised a strategy to engineer bone tissues with a functional bone marrow (BM) compartment in vivo by using a synthetic biomaterial with spatially differing cues. Specifically, we have developed a synthetic matrix recapitulating the dual-compartment structures by modular assembly of mineralized and nonmineralized macroporous structures. Our results show that these matrices incorporated with BM cells or BM flush transplanted into recipient mice matured into functional bone displaying the cardinal features of both skeletal and hematopoietic compartments similar to native bone tissue. The hematopoietic function of bone tissues was demonstrated by its support for a higher percentage of mixed chimerism compared with i.v. injection and donor hematopoietic cell mobilization in the circulation of nonirradiated recipients. Furthermore, hematopoietic cells sorted from the engineered bone tissues reconstituted the hematopoietic system when transplanted into lethally irradiated secondary recipients. Such engineered bone tissues could potentially be used as ectopic BM surrogates for treatment of nonmalignant BM diseases and as a tool to study hematopoiesis, donor-host cell dynamics, tumor tropism, and hematopoietic cell transplantation.
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17
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Nair A, Tang L. Influence of scaffold design on host immune and stem cell responses. Semin Immunol 2017; 29:62-71. [PMID: 28431919 DOI: 10.1016/j.smim.2017.03.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 03/17/2017] [Accepted: 03/24/2017] [Indexed: 12/29/2022]
Abstract
The combined culture of isolated stem cells in tissue engineering scaffolds represents a popular strategy for the regeneration of specialized tissues. Despite of improved outcomes in some tissues, this stem cell-seeded tissue engineering strategy has not led to significant tissue regeneration as expected. The lower-than-expected outcome may be caused by overwhelming immune responses to scaffold materials and poor survival of seeded stem cells following implantation. This review is aimed at summarizing the success and failure of this strategy and also shedding some light on new directions to design scaffolds for promoting regenerative responses via autologous stem cells. The first half of this review summarizes the influence of scaffold physical and chemical properties on immune cell responses to scaffold implants. The second half focuses on the influence of scaffold design to alter immune and stem cell responses for achieving desirable tissue regeneration.
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Affiliation(s)
- Ashwin Nair
- Joint Biomedical Engineering Program, University of Texas at Arlington, Arlington, TX 76019 and University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390.
| | - Liping Tang
- Joint Biomedical Engineering Program, University of Texas at Arlington, Arlington, TX 76019 and University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390; Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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18
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Shafiq M, Jung Y, Kim SH. Covalent immobilization of stem cell inducing/recruiting factor and heparin on cell-free small-diameter vascular graft for accelerated in situ tissue regeneration. J Biomed Mater Res A 2016; 104:1352-71. [PMID: 26822178 DOI: 10.1002/jbm.a.35666] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 01/17/2016] [Accepted: 01/25/2016] [Indexed: 12/12/2022]
Abstract
The development of cell-free vascular grafts has tremendous potential for tissue engineering. However, thrombus formation, less-than-ideal cell infiltration, and a lack of growth potential limit the application of electrospun scaffolds for in situ tissue-engineered vasculature. To overcome these challenges, here we present development of an acellular tissue-engineered vessel based on electrospun poly(L-lactide-co-ɛ-caprolactone) scaffolds. Heparin was conjugated to suppress thrombogenic responses, and substance P (SP) was immobilized to recruit host cells. SP was released in a sustained manner from scaffolds and recruited human bone marrow-derived mesenchymal stem cells. The biocompatibility and biological performance of the grafts were evaluated by in vivo experiments involving subcutaneous scaffold implantation in Sprague-Dawley rats (n = 12) for up to 4 weeks. Histological analysis revealed a higher extent of accumulative host cell infiltration, neotissue formation, collagen deposition, and elastin deposition in scaffolds containing either SP or heparin/SP than in the control groups. We also observed the presence of a large number of laminin-positive blood vessels, von Willebrand factor (vWF(+) ) cells, and alpha smooth muscle actin-positive cells in the explants containing SP and heparin/SP. Additionally, SP and heparin/SP grafts showed the existence of CD90(+) and CD105(+) MSCs and induced a large number of M2 macrophages to infiltrate the graft wall compared with that observed with the control group. Our cell-free grafts could enhance vascular regeneration by endogenous cell recruitment and by mediating macrophage polarization into the M2 phenotype, suggesting that these constructs may be a promising cell-free graft candidate and are worthy of further in vivo evaluation. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 1352-1371, 2016.
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Affiliation(s)
- Muhammad Shafiq
- Department of Biomedical Engineering, Korea University of Science and Technology (UST) (305-350), Gajeong-Ro, Yuseong-Gu, Daejeon, Korea.,Center for Biomaterials 5, Hwarang-Ro 14-Gil, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seongbuk-Gu, Seoul, 136-791, Republic of Korea
| | - Youngmee Jung
- Department of Biomedical Engineering, Korea University of Science and Technology (UST) (305-350), Gajeong-Ro, Yuseong-Gu, Daejeon, Korea.,Center for Biomaterials 5, Hwarang-Ro 14-Gil, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seongbuk-Gu, Seoul, 136-791, Republic of Korea
| | - Soo Hyun Kim
- Department of Biomedical Engineering, Korea University of Science and Technology (UST) (305-350), Gajeong-Ro, Yuseong-Gu, Daejeon, Korea.,Center for Biomaterials 5, Hwarang-Ro 14-Gil, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seongbuk-Gu, Seoul, 136-791, Republic of Korea.,NBIT, KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Korea
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19
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Faia-Torres AB, Charnley M, Goren T, Guimond-Lischer S, Rottmar M, Maniura-Weber K, Spencer ND, Reis RL, Textor M, Neves NM. Osteogenic differentiation of human mesenchymal stem cells in the absence of osteogenic supplements: A surface-roughness gradient study. Acta Biomater 2015; 28:64-75. [PMID: 26432440 DOI: 10.1016/j.actbio.2015.09.028] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 09/17/2015] [Accepted: 09/23/2015] [Indexed: 12/22/2022]
Abstract
The use of biomaterials to direct osteogenic differentiation of human mesenchymal stem cells (hMSCs) in the absence of osteogenic supplements is thought to be part of the next generation of orthopedic implants. We previously engineered surface-roughness gradients of average roughness (Ra) varying from the sub-micron to the micrometer range (∼0.5-4.7 μm), and mean distance between peaks (RSm) gradually varying from ∼214 μm to 33 μm. Here we have screened the ability of such surface-gradients of polycaprolactone to influence the expression of alkaline phosphatase (ALP), collagen type 1 (COL1) and mineralization by hMSCs cultured in dexamethasone (Dex)-deprived osteogenic induction medium (OIM) and in basal growth medium (BGM). Ra∼1.53 μm/RSm∼79 μm in Dex-deprived OI medium, and Ra∼0.93 μm/RSm∼135 μm in BGM consistently showed higher effectiveness at supporting the expression of the osteogenic markers ALP, COL1 and mineralization, compared to the tissue culture polystyrene (TCP) control in complete OIM. The superior effectiveness of specific surface-roughness revealed that this strategy may be used as a compelling alternative to soluble osteogenic inducers in orthopedic applications featuring the clinically relevant biodegradable polymer polycaprolactone. STATEMENT OF SIGNIFICANCE Biodegradable polymers, such as polycaprolactone (PCL), are promising materials in the field of tissue engineering and regenerative medicine, which aims at creating viable options to replace permanent orthopedic implants. The material, cells, and growth-stimulating factors are often referred to as the key components of engineered tissues. In this article, we studied the hypothesis of specific surface modification of PCL being capable of inducing mesenchymal stem cell differentiation in bone cells in the absence of cell-differentiating factors. The systematic investigation of the linearly varying surface-roughness gradient showed that an average PCL roughness of 0.93 μm alone can serve as a compelling alternative to soluble osteogenic inducers in orthopedic applications featuring the clinically relevant biodegradable polymer polycaprolactone.
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20
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Shen J, Zheng J, Saxena R, Zhang C, Tang L. Novel source of human hematopoietic stem cells from peritoneal dialysis effluents. Stem Cell Res 2015. [PMID: 26209817 DOI: 10.1016/j.scr.2015.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Hematopoietic stem cells (HSCs) hold great promise for the treatment of various diseases and blood disorders. However, limited availability of these cells has hampered their applications in clinical and biological research. Here we have identified a new source of autologous human HSCs in peritoneal dialysis (PD) effluents from patients with end stage renal diseases (ESRDs). Cells isolated from PD effluents contain a Lin-/CD34+/CD38-/CD90+ sub-population and can repopulate NOD/SCID/gamma-/- mice in serial transplantation. Differing from cord blood HSCs, PD-derived HSCs have high tendencies to repopulate peritoneal cavity and spleen with myeloid cells and B lymphocytes. Repopulating HSCs also reside in peritoneal cavities in mice. The isolation of HSCs from peritoneal cavities provides a novel and promising source of autologous and functional HSCs for stem cell research and possible clinical use.
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Affiliation(s)
- Jinhui Shen
- Department of Bioengineering, University of Texas at Arlington, PO Box 19138, Arlington, TX 76019, United States
| | - Junke Zheng
- Departments of Physiology and Developmental Biology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, United States
| | - Ramesh Saxena
- Division of Nephrology, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd, Dallas, TX 75390, United States
| | - ChengCheng Zhang
- Departments of Physiology and Developmental Biology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, United States.
| | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, PO Box 19138, Arlington, TX 76019, United States; Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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21
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Shafiq M, Jung Y, Kim SH. Stem cell recruitment, angiogenesis, and tissue regeneration in substance P-conjugated poly(l-lactide-co-ɛ-caprolactone) nonwoven meshes. J Biomed Mater Res A 2015; 103:2673-88. [DOI: 10.1002/jbm.a.35400] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 12/23/2014] [Accepted: 01/20/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Muhammad Shafiq
- Center for Biomaterials; Biomedical Research Institute, Korea Institute of Science and Technology; Seoul 136791 South Korea
- Department of Biomedical Engineering; Korea University of Science and Technology; 113 Gwahangno, Yuseong-gu Daejeon 305333 South Korea
| | - Youngmee Jung
- Center for Biomaterials; Biomedical Research Institute, Korea Institute of Science and Technology; Seoul 136791 South Korea
- Department of Biomedical Engineering; Korea University of Science and Technology; 113 Gwahangno, Yuseong-gu Daejeon 305333 South Korea
| | - Soo Hyun Kim
- Center for Biomaterials; Biomedical Research Institute, Korea Institute of Science and Technology; Seoul 136791 South Korea
- Department of Biomedical Engineering; Korea University of Science and Technology; 113 Gwahangno, Yuseong-gu Daejeon 305333 South Korea
- NBIT; KU-KIST Graduate School of Converging Science and Technology; Korea University; Seoul 136701 South Korea
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22
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Su LC, Xu H, Tran RT, Tsai YT, Tang L, Banerjee S, Yang J, Nguyen KT. In situ re-endothelialization via multifunctional nanoscaffolds. ACS NANO 2014; 8:10826-36. [PMID: 25222570 PMCID: PMC4212783 DOI: 10.1021/nn504636n] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 09/11/2014] [Indexed: 05/25/2023]
Abstract
The endothelium monolayer lining in the luminal side of blood vessels provides critical antithrombotic functions. Damage to these cells will expose a highly thrombogenic subendothelium, which leads to pathological vascular changes. Using combined tissue engineering and ligand-receptor targeting strategy, we developed a biodegradable urethane-doped polyester (UPE) multifunctional targeting nanoparticle (MTN) scaffold system with dual ligands: (1) glycoprotein 1b (GP1b) to target the injured arterial endothelium and subendothelium and (2) anti-CD34 antibodies to capture endothelial progenitor cells for endothelium regeneration. The fabricated spherical MTNs of 400 nm were found to be cytocompatible and hemocompatible. Both the in vitro and ex vivo targeting of these nanoscaffolds not only showed binding specificity of MTNs onto the von Willebrand factor -coated surfaces that simulate the injured arterial walls but also competed with platelets for binding onto these injured sites. Further in vivo study has revealed that a single delivery of MTNs upon vascular injury reduced neointimal hyperplasia by 57% while increased endothelium regeneration by ∼ 60% in 21 days. These results support the promise of using MTN nanoscaffolds for treating vascular injury in situ.
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Affiliation(s)
- Lee-Chun Su
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
| | - Hao Xu
- Department of Internal Medicine, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
| | - Richard T. Tran
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Yi-Ting Tsai
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
| | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
| | - Subhash Banerjee
- Department of Internal Medicine, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
| | - Jian Yang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kytai T. Nguyen
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
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Baker DW, Zhou J, Tsai YT, Patty KM, Weng H, Tang EN, Nair A, Hu WJ, Tang L. Development of optical probes for in vivo imaging of polarized macrophages during foreign body reactions. Acta Biomater 2014; 10:2945-2955. [PMID: 24726956 PMCID: PMC4041819 DOI: 10.1016/j.actbio.2014.04.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 03/27/2014] [Accepted: 04/02/2014] [Indexed: 12/11/2022]
Abstract
Plasticity of macrophage (MΦ) phenotypes exist in a spectrum from classically activated (M1) cells, to alternatively activated (M2) cells, contributing to both the normal healing of tissues and the pathogenesis of implant failure. Here, folate- and mannose-based optical probes were fabricated to simultaneously determine the degree of MΦ polarization. In vitro tests show the ability of these probes to specifically target M1 and M2 cells. In an in vivo murine model, they were able to distinguish between the M1-dominated inflammatory response to infection and the M2-dominated regenerative response to particle implants. Finally, the probes were used to assess the inflammatory/regenerative properties of biomaterial implants. Our results show that these probes can be used to monitor and quantify the dynamic processes of MΦ polarization and their role in cellular responses in real time.
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Affiliation(s)
- David W Baker
- Bioengineering Department, The University of Texas at Arlington, Arlington, TX 76019-0138
| | - Jun Zhou
- Bioengineering Department, The University of Texas at Arlington, Arlington, TX 76019-0138
| | - Yi-Ting Tsai
- Bioengineering Department, The University of Texas at Arlington, Arlington, TX 76019-0138
| | - Kaitlen M Patty
- Bioengineering Department, The University of Texas at Arlington, Arlington, TX 76019-0138
| | - Hong Weng
- Bioengineering Department, The University of Texas at Arlington, Arlington, TX 76019-0138
| | - Ewin N. Tang
- Bioengineering Department, The University of Texas at Arlington, Arlington, TX 76019-0138
| | - Ashwin Nair
- Bioengineering Department, The University of Texas at Arlington, Arlington, TX 76019-0138
| | | | - Liping Tang
- Bioengineering Department, The University of Texas at Arlington, Arlington, TX 76019-0138
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Baker DW, Tsai YT, Weng H, Tang L. Alternative strategies to manipulate fibrocyte involvement in the fibrotic tissue response: pharmacokinetic inhibition and the feasibility of directed-adipogenic differentiation. Acta Biomater 2014; 10:3108-16. [PMID: 24657674 DOI: 10.1016/j.actbio.2014.03.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 02/17/2014] [Accepted: 03/11/2014] [Indexed: 01/21/2023]
Abstract
Fibrocytes have previously been identified as important mediators in several inflammatory and fibrotic diseases. However, there is no effective treatment thus far to reduce fibrotic tissue responses without affecting wound healing reactions. Here we investigate two strategies to alleviate fibrocyte interactions at the biomaterial interface, reducing collagen production and scar tissue formation. First, in an indirect approach, TGF-β inhibitor-SB431542 and IL-1β/TNF-α inhibitor SB203580 were locally released from scaffold implants to block their respective signaling pathways. We show that the inhibition of IL-1β/TNF-α has no influence on overall fibrotic tissue reactions to the implants. However, the reduction of localized TGF-β significantly decreases the fibrocyte accumulation and myofibroblast activation while reducing the fibrotic tissue formation. Since fibrocytes can be differentiated into non-fibrotic cell types, such as adipocytes, we further sought a more direct approach to reduce fibrocyte responses by directing fibrocyte differentiation into adipocytes. Interestingly, by initiating fibrocyte-to-adipocyte differentiation through sustained differentiation cocktail release, we find that adipogenic differentiation forces incoming fibrocytes away from the traditional myofibroblast lineage, leading to a substantial reduction in the collagen formation and fibrotic response. Our results support a novel and effective strategy to improve implant safety by reducing implant-associated fibrotic tissue reactions via directing non-fibrotic differentiation of fibrocytes.
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25
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Kim J, Li WA, Sands W, Mooney DJ. Effect of pore structure of macroporous poly(lactide-co-glycolide) scaffolds on the in vivo enrichment of dendritic cells. ACS APPLIED MATERIALS & INTERFACES 2014; 6:8505-12. [PMID: 24844318 PMCID: PMC4056860 DOI: 10.1021/am501376n] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The in vivo enrichment of dendritic cells (DCs) in implanted macroporous scaffolds is an emerging strategy to modulate the adaptive immune system. The pore architecture is potentially one of the key factors in controlling enrichment of DCs. However, there have been few studies examining the effects of scaffold pore structure on in vivo DC enrichment. Here we present the effects of surface porosity, pore size, and pore volume of macroporous poly(lactide-co-glycolide) (PLG) scaffolds encapsulating granulocyte macrophage colony-stimulating factor (GM-CSF), an inflammatory chemoattractant, on the in vivo enrichment of DCs. Although in vitro cell seeding studies using PLG scaffolds without GM-CSF showed higher cell infiltration in scaffolds with higher surface porosity, in vivo results revealed higher DC enrichment in GM-CSF loaded PLG scaffolds with lower surface porosity despite a similar level of GM-CSF released. The diminished compressive modulus of high surface porosity scaffolds compared to low surface porosity scaffolds lead to the significant shrinkage of these scaffolds in vivo, suggesting that the mechanical strength of scaffolds was critical to maintain a porous structure in vivo for accumulating DCs. The pore volume was also found to be important in total number of recruited cells and DCs in vivo. Varying the pore size significantly impacted the total number of cells, but similar numbers of DCs were found as long as the pore size was above 10-32 μm. Collectively, these results suggested that one can modulate in vivo enrichment of DCs by altering the pore architecture and mechanical properties of PLG scaffolds.
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Affiliation(s)
- Jaeyun Kim
- School
of Engineering and Applied Sciences and Wyss Institute
for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 01238, United States
- School
of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Weiwei Aileen Li
- School
of Engineering and Applied Sciences and Wyss Institute
for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 01238, United States
| | - Warren Sands
- School
of Engineering and Applied Sciences and Wyss Institute
for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 01238, United States
- Feinberg
School of Medicine, Northwestern University, Chicago, Illinois 60610, United States
| | - David J. Mooney
- School
of Engineering and Applied Sciences and Wyss Institute
for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 01238, United States
- D. J. Mooney. E-mail: . Tel.: 617-384-9624. Fax: 617-495-9837
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26
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Qu T, Jing J, Jiang Y, Taylor RJ, Feng JQ, Geiger B, Liu X. Magnesium-containing nanostructured hybrid scaffolds for enhanced dentin regeneration. Tissue Eng Part A 2014; 20:2422-33. [PMID: 24593189 DOI: 10.1089/ten.tea.2013.0741] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Dental caries is one of the most prevalent chronic diseases in the United States, affecting 92% of adults aged 20-64 years. Scaffold-based tissue engineering represents a promising strategy to replace damaged dental structures and restore their biological functions. Current single-component scaffolding materials used for dental tissue regeneration, however, cannot provide the proper microenvironment for dental stem/progenitor cell adhesion, proliferation, and differentiation; new biomimetic hybrid scaffolds are needed to promote better dental tissue formation. In this work, we developed a biomimetic approach to prepare three-dimensional (3D) nanofibrous gelatin/magnesium phosphate (NF-gelatin/MgP) hybrid scaffolds. These scaffolds not only mimic the nanostructured architecture and the chemical composition of natural dentin matrices but also constantly present favorable chemical signals (Mg ions) to dental pulp stem cells (DPSCs), thus providing a desirable microenvironment to facilitate DPSC proliferation, differentiation, and biomineralization. Synthesized hybrid NF-gelatin/MgP possesses natural extracellular matrix (ECM)-like architecture, high porosity, high pore interconnectivity, well-defined pore size, and controlled Mg ion release from the scaffold. Adding MgP into NF-gelatin also increased the mechanical strength of the hybrid scaffold. The sustained release of Mg ions from the NF-gelatin/MgP (MgP=10% wt/wt) scaffold significantly enhanced the proliferation, differentiation, and biomineralization of human DPSCs in vitro. The alkaline phosphatase (ALP) activity and the gene expressions for odontogenic differentiation (collagen I [Col I], ALP, osteocalcin [OCN], dentin sialophosphoprotein [DSPP], and dentin matrix protein 1 [DMP1]) were all significantly higher (p<0.05) in the NF-gelatin/MgP group than in the NF-gelatin group. Those results were further confirmed by hematoxylin and eosin (H&E) and von Kossa staining, as shown by greater ECM secretion and mineral deposition in the hybrid scaffold. Consistent with the in vitro study, the DPSCs/NF-gelatin/MgP constructs produced greater ECM deposition, hard tissue formation, and expression of marker proteins (DSPP, DMP1, Col I) for odontogenic differentiation than did the DPSCs/NF-gelatin after 5 weeks of ectopic implantation in rude mice. The controlled release of metallic ions from biomimetic nanostructured hybrid scaffolds, therefore, is a promising approach to enhancing the biological capability of the scaffolds for dental tissue regeneration.
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Affiliation(s)
- Tiejun Qu
- 1 Department of Biomedical Sciences, Texas A&M University Baylor College of Dentistry , Dallas, Texas
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27
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Shen J, Nair A, Saxena R, Zhang CC, Borrelli J, Tang L. Tissue engineering bone using autologous progenitor cells in the peritoneum. PLoS One 2014; 9:e93514. [PMID: 24681529 PMCID: PMC3969359 DOI: 10.1371/journal.pone.0093514] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 03/06/2014] [Indexed: 01/01/2023] Open
Abstract
Despite intensive research efforts, there remains a need for novel methods to improve the ossification of scaffolds for bone tissue engineering. Based on a common phenomenon and known pathological conditions of peritoneal membrane ossification following peritoneal dialysis, we have explored the possibility of regenerating ossified tissue in the peritoneum. Interestingly, in addition to inflammatory cells, we discovered a large number of multipotent mesenchymal stem cells (MSCs) in the peritoneal lavage fluid from mice with peritoneal catheter implants. The osteogenic potential of these peritoneal progenitor cells was demonstrated by their ability to easily infiltrate decalcified bone implants, produce osteocalcin and form mineralized bone in 8 weeks. Additionally, when poly(l-lactic acid) scaffolds loaded with bone morphogenetic protein-2 (a known osteogenic differentiation agent) were implanted into the peritoneum, signs of osteogenesis were seen within 8 weeks of implantation. The results of this investigation support the concept that scaffolds containing BMP-2 can stimulate the formation of bone in the peritoneum via directed autologous stem and progenitor cell responses.
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Affiliation(s)
- Jinhui Shen
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas, United States of America
| | - Ashwin Nair
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas, United States of America
| | - Ramesh Saxena
- Division of Nephrology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, United States of America
| | - Cheng Cheng Zhang
- Departments of Physiology and Developmental Biology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, United States of America
| | - Joseph Borrelli
- Texas Health Physicians Group, Texas Health Arlington Memorial Hospital, Arlington, Texas, United States of America
| | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas, United States of America
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
- * E-mail:
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28
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Tsai YT, Zhou J, Weng H, Shen J, Tang L, Hu WJ. Real-time noninvasive monitoring of in vivo inflammatory responses using a pH ratiometric fluorescence imaging probe. Adv Healthc Mater 2014; 3:221-9. [PMID: 23828849 DOI: 10.1002/adhm.201200365] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 01/31/2013] [Indexed: 12/31/2022]
Abstract
It is often difficult to continuously monitor and quantify inflammatory responses in vivo. These dynamic responses however are often accompanied by specific pH changes. A new ratiometric optical pH probe is developed by combining pH-sensitive (CypHer5E) and pH-insensitive (Oyster800) fluorescent dyes into nanoparticles for in vivo optical imaging. By taking the ratio of fluorescence intensities at different wavelengths, these nanosized sensors provide excellent measurement capabilities, and unique mapping, of the continuous in vivo pH changes for three different inflammation models. In each model a strong positive correlation is found between ratiometric pH changes and the corresponding inflammatory response measured by histological analyses. These results indicate that ratiometric imaging can provide a noninvasive, rapid, and highly sensitive optical readout for the pH-ratio changes in vivo. Furthermore this technique may be used to monitor the real-time dynamics of inflammatory processes.
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Affiliation(s)
- Yi-Ting Tsai
- Bioengineering Department, University of Texas at Arlington, P.O. Box 19138, Arlington, TX 76019-0138
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29
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Pujari S, Hoess A, Shen J, Thormann A, Heilmann A, Tang L, Karlsson-Ott M. Effects of nanoporous alumina on inflammatory cell response. J Biomed Mater Res A 2013; 102:3773-80. [PMID: 24288233 DOI: 10.1002/jbm.a.35048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 11/02/2013] [Accepted: 11/20/2013] [Indexed: 11/07/2022]
Abstract
The present study focuses on the effects of nanoscale porosity on inflammatory response in vitro and in vivo. Nanoporous alumina membranes with different pore sizes, 20 and 200 nm in diameter, were used. We first evaluated cell/alumina interactions in vitro by observing adhesion, proliferation, and activation of a murine fibroblast and a macrophage cell line. To investigate the chronic inflammatory response, the membranes were implanted subcutaneously in mice for 2 weeks. Cell recruitment to the site of implantation was determined by histology and the production of cytokines was measured by protein array analysis. Both in vitro and in vivo studies showed that 200 nm pores induced a stronger inflammatory response as compared to the alumina with 20 nm pores. This was observed by an increase in macrophage activation in vitro as well as higher cell recruitment and generation of proinflammatory cytokines around the alumina with 200 nm pores, in vivo. Our results suggest that nanofeatures can be modulated in order to control the inflammatory response to implants.
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Affiliation(s)
- Shiuli Pujari
- Applied Material Science, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, SE-751 21, Uppsala, Sweden
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30
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Nair AM, Tsai YT, Shah KM, Shen J, Weng H, Zhou J, Sun X, Saxena R, Borrelli J, Tang L. The effect of erythropoietin on autologous stem cell-mediated bone regeneration. Biomaterials 2013; 34:7364-71. [PMID: 23831188 DOI: 10.1016/j.biomaterials.2013.06.031] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 06/18/2013] [Indexed: 12/20/2022]
Abstract
Mesenchymal stem cells (MSCs) although used for bone tissue engineering are limited by the requirement of isolation and culture prior to transplantation. Our recent studies have shown that biomaterial implants can be engineered to facilitate the recruitment of MSCs. In this study, we explore the ability of these implants to direct the recruitment and the differentiation of MSCs in the setting of a bone defect. We initially determined that both stromal derived factor-1alpha (SDF-1α) and erythropoietin (Epo) prompted different degrees of MSC recruitment. Additionally, we found that Epo and bone morphogenetic protein-2 (BMP-2), but not SDF-1α, triggered the osteogenic differentiation of MSCs in vitro. We then investigated the possibility of directing autologous MSC-mediated bone regeneration using a murine calvaria model. Consistent with our in vitro observations, Epo-releasing scaffolds were found to be more potent in bridging the defect than BMP-2 loaded scaffolds, as determined by computed tomography (CT) scanning, fluorescent imaging and histological analyses. These results demonstrate the tremendous potential, directing the recruitment and differentiation of autologous MSCs has in the field of tissue regeneration.
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Affiliation(s)
- Ashwin M Nair
- Bioengineering Department, University of Texas Southwestern Medical Center and The University of Texas at Arlington, Arlington, TX 76019, USA
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31
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Santos SG, Lamghari M, Almeida CR, Oliveira MI, Neves N, Ribeiro AC, Barbosa JN, Barros R, Maciel J, Martins MCL, Gonçalves RM, Barbosa MA. Adsorbed fibrinogen leads to improved bone regeneration and correlates with differences in the systemic immune response. Acta Biomater 2013; 9:7209-17. [PMID: 23571000 DOI: 10.1016/j.actbio.2013.04.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 03/21/2013] [Accepted: 04/02/2013] [Indexed: 12/25/2022]
Abstract
Designing new biomaterials that can modulate the inflammatory response instead of attempting just to reduce it constitutes a paradigm change in regenerative medicine. This work aimed to investigate the capacity of an immunomodulatory biomaterial to enhance bone regeneration. For that purpose we incorporated a molecule with well-established pro-inflammatory and pro-healing roles, fibrinogen, in chitosan scaffolds. Two different incorporation strategies were tested, leading to concentrations of 0.54±0.10mg fibrinogen g(-1) scaffold immediately upon adsorption (Fg-Sol), and 0.34±0.04mg fibrinogen g(-1) scaffold after washing (Fg-Ads). These materials were implanted in a critical size bone defect in rats. At two months post-implantation the extent of bone regeneration was examined by histology and the systemic immune response triggered was evaluated by determining the percentages of myeloid cells, T and B lymphocytes in the draining lymph nodes. The results obtained indicate that the fibrinogen incorporation strategy conditioned the osteogenic capacity of biomaterials. Fg-Ads scaffolds led to more bone formation, and the presence of Fg stimulated angiogenesis. Furthermore, animals implanted with Fg-Ads scaffolds showed significant increases in the percentages of B lymphocytes and myeloid cells in the draining lymph nodes, while levels of T lymphocytes were not significantly different. Finally, a significant increase in TGF-β1 was detected in the plasma of animals implanted with Fg-Ads. Taken together the results presented suggest a potential correlation between the elicited immune response and biomaterial osteogenic performance.
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Affiliation(s)
- S G Santos
- Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre 823, 4150-180 Porto, Portugal.
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Abstract
The immobilization of cells into polymeric scaffolds releasing therapeutic factors, such as alginate microcapsules, has been widely employed as a drug-delivery system for numerous diseases for many years. As a result of the potential benefits stem cells offer, during recent decades, this type of cell has gained the attention of the scientific community in the field of cell microencapsulation technology and has opened many perspectives. Stem cells represent an ideal tool for cell immobilization and so does alginate as a biomaterial of choice in the elaboration of these biomimetic scaffolds, offering us the possibility of benefiting from both disciplines in a synergistic way. This review intends to give an overview of the many possibilities and the current situation of immobilized stem cells in alginate bioscaffolds, showing the diverse therapeutic applications they can already be employed in; not only drug-delivery systems, but also tissue engineering platforms.
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33
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Zhao L, Liu L, Wu Z, Zhang Y, Chu PK. Effects of micropitted/nanotubular titania topographies on bone mesenchymal stem cell osteogenic differentiation. Biomaterials 2012; 33:2629-41. [PMID: 22204980 DOI: 10.1016/j.biomaterials.2011.12.024] [Citation(s) in RCA: 202] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 12/10/2011] [Indexed: 01/14/2023]
Abstract
Micro/nanotopographical modification of biomaterials constitutes a promising approach to direct stem cell osteogenic differentiation to promote osseointegration. In this work, titania nanotubes (NTs) 25 and 80 nm in size with the acid-etched Ti topography (AcidTi) and hierarchical hybrid micropitted/nanotubular topographies (Micro/5VNT and Micro/20VNT) are produced to mimic the structure of the natural bone extracellular matrix (ECM). The effects on bone mesenchymal stem cell (MSC) osteogenic differentiation are studied systematically by various microscopic and biological characterization techniques. Cell adhesion is assayed by nucleus fluorescence staining and cell proliferation is studied by CCK-8 assay and flow cytometry. Osteogenic differentiation is assayed by alkaline phosphatase (ALP) expression, collagen secretion, matrix mineralization, and quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis on the osteogenesis related gene expression. All the topographies are observed to induce MSC osteogenic differentiation in the absence of osteogenic supplements. The nanotube surfaces significantly promote cell attachment and spread, collagen secretion and ECM mineralization, as well as osteogenesis-related gene expression. Among them, Micro/20VNT shows the best ability to simultaneously promote MSC proliferation and osteogenic differentiation. Our results unambiguously demonstrate their excellent ability to support MSC proliferation and induce MSC osteogenic differentiation, especially those with the micropitted topography.
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Affiliation(s)
- Lingzhou Zhao
- Department of Periodontology and Oral Medicine, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an 710032, China
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Ko CY, Wu L, Nair AM, Tsai YT, Lin VK, Tang L. The use of chemokine-releasing tissue engineering scaffolds in a model of inflammatory response-mediated melanoma cancer metastasis. Biomaterials 2011; 33:876-85. [PMID: 22019117 DOI: 10.1016/j.biomaterials.2011.10.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Accepted: 10/01/2011] [Indexed: 02/07/2023]
Abstract
Inflammatory responses and associated products have been implicated in cancer metastasis. However, the relationship between these two processes is uncertain due to the lack of a suitable model. Taking advantage of localized and controllable inflammatory responses induced by biomaterial implantation and the capability of tissue scaffolds to release a wide variety of chemokines, we report a novel system for studying the molecular mechanisms of inflammation-mediated cancer metastasis. The animal model is comprised of an initial subcutaneous implantation of biomaterial microspheres which prompt localized inflammatory responses, followed by the transplantation of metastatic cancer cells into the peritoneal cavity or blood circulation. Histological results demonstrated that substantial numbers of B16F10 cells were recruited to the site nearby biomaterial implants. There was a strong correlation between the degree of biomaterial-mediated inflammatory responses and number of recruited cancer cells. Inflammation-mediated cancer cell migration was inhibited by small molecule inhibitors of CXCR4 but not by neutralizing antibody against CCL21. Using chemokine-releasing scaffolds, further studies were carried out to explore the possibility of enhancing cancer cell recruitment. Interestingly, erythropoietin (EPO) releasing scaffolds, but not stromal cell-derived factor-1α-releasing scaffolds, were found to accumulate substantially more melanoma cells than controls. Rather unexpectedly, perhaps by indirectly reducing circulating cancer cells, mice implanted with EPO-releasing scaffolds had ~30% longer life span than other groups. These results suggest that chemokine-releasing scaffolds may potentially function as implantable cancer traps and serve as powerful tools for studying cancer distraction and even selective annihilation of circulating metastatic cancer cells.
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Affiliation(s)
- Cheng-Yu Ko
- Bioengineering Department, University of Texas at Arlington, Arlington, TX 76019-0138, USA
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