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Farhana S, Kai YC, Kadir R, Sulaiman WAW, Nordin NA, Nasir NAM. The fate of adipose tissue and adipose-derived stem cells in allograft. Cell Tissue Res 2023; 394:269-292. [PMID: 37624425 DOI: 10.1007/s00441-023-03827-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023]
Abstract
Utilizing adipose tissue and adipose-derived stem cells (ADSCs) turned into a promising field of allograft in recent years. The therapeutic potential of adipose tissue and ADSCs is governed by their molecular secretions, ability to sustain multi-differentiation and self-renewal which are pivotal in reconstructive, genetic diseases, and cosmetic goals. However, revisiting the existing functional capacity of adipose tissue and ADSCs and their intricate relationship with allograft is crucial to figure out the remarkable question of safety to use in allograft due to the growing evidence of interactions between tumor microenvironment and ADSCs. For instance, the molecular secretions of adipose tissue and ADSCs induce angiogenesis, create growth factors, and control the inflammatory response; it has now been well determined. Though the existing preclinical allograft studies gave positive feedback, ADSCs and adipose tissue are attracted by some factors of tumor stroma. Moreover, allorecognition is pivotal to allograft rejection which is carried out by costimulation in a complement-dependent way and leads to the destruction of the donor cells. However, extensive preclinical trials of adipose tissue and ADSCs in allograft at molecular level are still limited. Hence, comprehensive immunomodulatory analysis could ensure the successful allograft of adipose tissue and ADSCs avoiding the oncological risk.
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Affiliation(s)
- Sadia Farhana
- Reconstructive Sciences Unit, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150, Kota Bharu, Kelantan, Malaysia
| | - Yew Chun Kai
- Reconstructive Sciences Unit, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150, Kota Bharu, Kelantan, Malaysia
- Hospital Universiti Sains Malaysia, 16150, Kota Bharu, Kelantan, Malaysia
| | - Ramlah Kadir
- Department of Immunology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150, Kota Bharu, Kelantan, Malaysia
| | - Wan Azman Wan Sulaiman
- Reconstructive Sciences Unit, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150, Kota Bharu, Kelantan, Malaysia
- Hospital Universiti Sains Malaysia, 16150, Kota Bharu, Kelantan, Malaysia
| | - Nor Asyikin Nordin
- Department of Immunology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150, Kota Bharu, Kelantan, Malaysia
| | - Nur Azida Mohd Nasir
- Reconstructive Sciences Unit, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150, Kota Bharu, Kelantan, Malaysia.
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Santos LF, Patrício SG, Silva AS, Mano JF. Freestanding Magnetic Microtissues for Tissue Engineering Applications. Adv Healthc Mater 2022; 11:e2101532. [PMID: 34921719 DOI: 10.1002/adhm.202101532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 12/10/2021] [Indexed: 02/06/2023]
Abstract
A long-sought goal in tissue engineering (TE) is the development of tissues able to recapitulate the complex architecture of the native counterpart. Microtissues, by resembling the functional units of living structures, can be used to recreate tissues' architecture. Howbeit, microfabrication methodologies fail to reproduce cell-based tissues with uniform shape. At the macroscale, complex tissues are already produced by magnetic-TE using solely magnetized cells as building materials. The enhanced extracellular matrix (ECM) deposition guaranties the conservation of tissues' architecture, leading to a successful cellular engraftment. Following the same rational, now the combination of a versatile microfabrication-platform is proposed with magnetic-TE to generate robust micro-tissues with complex architecture for TE purposes. Small tissue units with circle, square, and fiber-like shapes are designed with high fidelity acting as building blocks for engineering complex tissues. Notably, freestanding microtissues maintain their geometry after 7 days post-culturing, overcoming the challenges of microtissues fabrication. Lastly, the ability of microtissues in invading distinct tissue models while releasing trophic factors is substantiated in methacryloyl laminarin (LAM) and platelet lysates (PLMA) hydrogels. By simply using cells as building units and such microfabrication-platform, the fabrication of complex multiscale and multifunctional tissues with clinical relevance is envisaged, including for therapies or disease models.
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Affiliation(s)
- Lúcia F. Santos
- Department of Chemistry CICECO–Aveiro Institute of Materials University of Aveiro Aveiro 3810‐193 Portugal
| | - Sónia G. Patrício
- Department of Chemistry CICECO–Aveiro Institute of Materials University of Aveiro Aveiro 3810‐193 Portugal
| | - Ana Sofia Silva
- Department of Chemistry CICECO–Aveiro Institute of Materials University of Aveiro Aveiro 3810‐193 Portugal
| | - João F. Mano
- Department of Chemistry CICECO–Aveiro Institute of Materials University of Aveiro Aveiro 3810‐193 Portugal
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3
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Wu X, Darlington DN, Christy BA, Liu B, Keesee JD, Salgado CL, Bynum JA, Cap AP. Intravenous administration of mesenchymal stromal cells leads to a dose-dependent coagulopathy and is unable to attenuate acute traumatic coagulopathy in rats. J Trauma Acute Care Surg 2022; 92:542-552. [PMID: 34797814 PMCID: PMC8860226 DOI: 10.1097/ta.0000000000003476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/01/2021] [Accepted: 11/06/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Mesenchymal stromal cells (MSCs) express surface tissue factor (TF), which may affect hemostasis and detract from therapeutic outcomes of MSCs if administered intravenously. In this study, we determine a safe dose of MSCs for intravenous (IV) administration and further demonstrate the impact of IV-MSC on acute traumatic coagulopathy (ATC) in rats. METHODS Tissue factor expression of rat bone marrow-derived mesenchymal stromal cell (BMSC) or adipose-derived mesenchymal stromal cell (AMSC) was detected by immunohistochemistry and enzyme-linked immunosorbent assay. The coagulation properties were measured in MSC-treated rat whole blood, and blood samples were collected from rats after IV administration of MSCs. Acute traumatic coagulopathy rats underwent polytrauma and 40% hemorrhage, followed by IV administration of 5 or 10 million/kg BMSCs (BMSC-5, BMSC-10), or vehicle at 1 hour after trauma. RESULTS Rat MSCs expressed TF, and incubation of rat BMSCs or AMSCs with whole blood in vitro led to a significantly shortened clotting time. However, a dose-dependent prolongation of prothrombin time with reduction in platelet counts and fibrinogen was found in healthy rat treated with IV-MSCs. Bone marrow-derived mesenchymal stromal cells at 5 million/kg or less led to minimal effect on hemostasis. Mesenchymal stromal cells were not found in circulation but in the lungs after IV administration regardless of the dosage. Acute traumatic coagulopathy with prolonged prothrombin time was not significantly affected by 5 or 10 million/kg BMSCs. Intravenous administration of 10 million/kg BMSCs led to significantly lower fibrinogen and platelet counts, while significantly higher levels of lactate, wet/dry weight ratio, and leukocyte infiltration in the lung were present compared with BMSC-5 or vehicle. No differences were seen in immune or inflammatory profiles with BMSC treatment in ATC rats, at least in the acute timeframe. CONCLUSION Intravenous administration of MSCs leads to a risk of coagulopathy associated with a dose-dependent reduction in platelet counts and fibrinogen and is incapable of restoring hemostasis of rats with ATC after polytrauma and hemorrhagic shock.
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Pant T, Murarka V, Jain R, Dandekar P. Chitosan based microcarriers for cellular growth and biologics production. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Woodroof AE, Naughton GK, Wood FM, Christy RJ, Natesan S, Hickerson WL. Path to 'One and Done'. J Wound Care 2021; 30:794-802. [PMID: 34644136 DOI: 10.12968/jowc.2021.30.10.794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Gail K Naughton
- Founder and Scientific Advisor, Histogen, Inc., San Diego, CA, US
| | | | - Robert J Christy
- Supervisory Research Physiologist, Cross Functional Research Team, Burn and Soft Tissue Research, US Army Institute of Surgical Research, Ft. Sam Houston, TX, US
| | - Shanmugasundaram Natesan
- Research Scientist, Cross Functional Research Team, Burn and Soft Tissue Research, US Army Institute of Surgical Research, Ft. Sam Houston, TX, US
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Selective Proliferation of Highly Functional Adipose-Derived Stem Cells in Microgravity Culture with Stirred Microspheres. Cells 2021; 10:cells10030560. [PMID: 33806638 PMCID: PMC7998608 DOI: 10.3390/cells10030560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 11/16/2022] Open
Abstract
Therapeutic effects of adult stem-cell transplantations are limited by poor cell-retention in target organs, and a reduced potential for optimal cell differentiation compared to embryonic stem cells. However, contemporary studies have indicated heterogeneity within adult stem-cell pools, and a novel culturing technique may address these limitations by selecting those for cell proliferation which are highly functional. Here, we report the preservation of stemness in human adipose-derived stem cells (hASCs) by using microgravity conditions combined with microspheres in a stirred suspension. The cells were bound to microspheres (100-300 μm) and cultured using a wave-stirring shaker. One-week cultures using polystyrene and collagen microspheres increased the proportions of SSEA-3(+) hASCs 4.4- and 4.3-fold (2.7- and 2.9-fold increases in their numbers), respectively, compared to normal culture conditions. These cultured hASCs expressed higher levels of pluripotent markers (OCT4, SOX2, NANOG, MYC, and KLF), and had improved abilities for proliferation, colony formation, network formation, and multiple-mesenchymal differentiation. We believe that this novel culturing method may further enhance regenerative therapies using hASCs.
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Gohi BFCA, Liu XY, Zeng HY, Xu S, Ake KMH, Cao XJ, Zou KM, Namulondo S. Enhanced efficiency in isolation and expansion of hAMSCs via dual enzyme digestion and micro-carrier. Cell Biosci 2020; 10:2. [PMID: 31921407 PMCID: PMC6945441 DOI: 10.1186/s13578-019-0367-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 12/16/2019] [Indexed: 01/08/2023] Open
Abstract
A two-stage method of obtaining viable human amniotic stem cells (hAMSCs) in large-scale is described. First, human amniotic stem cells are isolated via dual enzyme (collagenase II and DNAase I) digestion. Next, relying on a culture of the cells from porous chitosan-based microspheres in vitro, high purity hAMSCs are obtained in large-scale. Dual enzymatic (collagenase II and DNase I) digestion provides a primary cell culture and first subculture with a lower contamination rate, higher purity and a larger number of isolated cells. The obtained hAMSCs were seeded onto chitosan microspheres (CM), gelatin-chitosan microspheres (GCM) and collagen-chitosan microspheres (CCM) to produce large numbers of hAMSCs for clinical trials. Growth activity measurement and differentiation essays of hAMSCs were realized. Within 2 weeks of culturing, GCMs achieved over 1.28 ± 0.06 × 107 hAMSCs whereas CCMs and CMs achieved 7.86 ± 0.11 × 106 and 1.98 ± 0.86 × 106 respectively within this time. In conclusion, hAMSCs showed excellent attachment and viability on GCM-chitosan microspheres, matching the hAMSCs' normal culture medium. Therefore, dual enzyme (collagenase II and DNAase I) digestion may be a more useful isolation process and culture of hAMSCs on porous GCM in vitro as an ideal environment for the large-scale expansion of highly functional hAMSCs for eventual use in stem cell-based therapy.
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Affiliation(s)
- Bi Foua Claude Alain Gohi
- Biology and Chemical Engineering School, Panzhihua University, Panzhihua, 617000 Sichuan People’s Republic of China
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan, 411105 Hunan People’s Republic of China
| | - Xue-Ying Liu
- Economical Forest Cultivation and Utilization of 2011 Collaborative Innovation Center in Hunan Province, Hunan Key Laboratory of Green, Zhuzhou, China
- Packaging and Application of Biological Nanotechnology, Hunan University of Technology, Zhuzhou, 412007 Hunan China
| | - Hong-Yan Zeng
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan, 411105 Hunan People’s Republic of China
| | - Sheng Xu
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan, 411105 Hunan People’s Republic of China
| | - Kouassi Marius Honore Ake
- Faculty of Business Administration, Laval University, Pavillon Palasis-Prince, 2325 Rue de la Terrasse, G1V 0A6 Quebec City, Canada
| | - Xiao-Ju Cao
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan, 411105 Hunan People’s Republic of China
| | - Kai-Min Zou
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan, 411105 Hunan People’s Republic of China
| | - Sheila Namulondo
- Institute of Comparative Literature and World Literature, College of Literature and Journalism, Xiangtan University, Xiangtan, 411105 Hunan People’s Republic of China
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Samberg M, Stone R, Natesan S, Kowalczewski A, Becerra S, Wrice N, Cap A, Christy R. Platelet rich plasma hydrogels promote in vitro and in vivo angiogenic potential of adipose-derived stem cells. Acta Biomater 2019; 87:76-87. [PMID: 30665019 DOI: 10.1016/j.actbio.2019.01.039] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/18/2018] [Accepted: 01/17/2019] [Indexed: 12/23/2022]
Abstract
Despite great advances in skin wound care utilizing grafting techniques, the resulting severe scarring, deformity and ineffective vascularization remains a challenge. Alternatively, tissue engineering of new skin using patient-derived stem cells and scaffolding materials promises to greatly increase the functional and aesthetic outcome of skin wound healing. This work focused on the optimization of a polyethylene glycol modified (PEGylated) platelet-rich plasma (PRP) hydrogel for the protracted release of cytokines, growth factors, and signaling molecules and also the delivery of a provisional physical framework for stem cell angiogenesis. Freshly collected whole blood was utilized to synthesize PEGylated PRP hydrogels containing platelet concentrations ranging from 0 to 200,000 platelets/µl. Hydrogels were characterized using thromboelastography and impedance aggregometry for platelet function and were visualized using scanning electron microscopy. To assess the effects of PEGylated PRP hydrogels on cells, PRP solutions were seeded with human adipose-derived stem cells (ASCs) prior to gelation. Following 14 days of incubation in vitro, increased platelet concentrations resulted in higher ASC proliferation and vascular gene and protein expression (assessed via RT-PCR, ELISA, and immunochemistry). Using a rat skin excision model, wounds treated with PRP + ASC hydrogels increased the number of vessels in the wound by day 8 (80.2 vs. 62.6 vessels/mm2) compared to controls. In conclusion, the proposed PEGylated PRP hydrogel promoted both in vitro and transient in vivo angiogenesis of ASCs for improved wound healing. STATEMENT OF SIGNIFICANCE: Our findings support an innovative means of cellular therapy intervention to improve surgical wound healing in a normal wound model. ASCs seeded within PEGylated PRP could be an efficacious and completely autologous therapy for treating patients who have poorly healing wounds caused by vascular insufficiency, previous irradiation, or full-thickness burns. Because wound healing is a dynamic and complex process, the application of more than one growth factor with ASCs demonstrates an advantageous way of improving healing.
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Affiliation(s)
- Meghan Samberg
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Randolph Stone
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Shanmugasundaram Natesan
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Andrew Kowalczewski
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Sandra Becerra
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Nicole Wrice
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Andrew Cap
- U.S. Army Institute of Surgical Research, Coagulation and Blood Research, JBSA Fort Sam Houston, TX, USA
| | - Robert Christy
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA.
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Ishihara M, Kishimoto S, Nakamura S, Fukuda K, Sato Y, Hattori H. Biomaterials as cell carriers for augmentation of adipose tissue-derived stromal cell transplantation. Biomed Mater Eng 2019; 29:567-585. [PMID: 30400072 DOI: 10.3233/bme-181009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Adipose tissue-derived stromal cells (ADSCs) contain lineage-committed progenitor cells that have the ability to differentiate into various cell types that may be useful for autologous cell transplantation to correct defects of skin, adipose, cartilage, bone, tendon, and blood vessels. The multipotent characteristics of ADSCs, as well as their abundance in the human body, make them an attractive potential resource for wound repair and applications to tissue engineering. ADSC transplantation has been used in combination with biomaterials, including cell sheets, hydrogel, and three-dimensional (3D) scaffolds based on chitosan, fibrin, atelocollagen, and decellularized porcine dermis, etc. Furthermore, low molecular weight heparin/protamine nanoparticles (LH/P NPs) have been used as an inducer of ADSC aggregation. The tissue engineering potential of these biomaterials as cell carriers is increased by the synergistic relationship between ADSCs and the biomaterials, resulting in the release of angiogenic cytokines and growth factors. In this review article, we describe the advantages of ADSC transplantation for tissue engineering, focusing on biomaterials as cell carriers which we have studied.
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Affiliation(s)
- Masayuki Ishihara
- Division of Biomedical Engineering Research Institute, National Defense Medical College, Saitama 359-8513, Japan
| | - Satoko Kishimoto
- Research Support Center, Dokkyo Medical University, Tochigi 321-0293, Japan
| | - Shingo Nakamura
- Division of Biomedical Engineering Research Institute, National Defense Medical College, Saitama 359-8513, Japan
| | - Koichi Fukuda
- Division of Biomedical Engineering Research Institute, National Defense Medical College, Saitama 359-8513, Japan
| | - Yoko Sato
- Division of Biomedical Engineering Research Institute, National Defense Medical College, Saitama 359-8513, Japan
| | - Hidemi Hattori
- Department of Biochemistry and Applied Sciences, University of Miyazaki, Miyazaki 889-2162, Japan
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10
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Jeong YH, Oh HM, Lee MR, Kim CY, Joo C, Park SJ, Song YH, Kang C, Chung HM, Kang SW, Huh KM, Moon SH. The Effect of Hexanoyl Glycol Chitosan on the Proliferation of Human Mesenchymal Stem Cells. Polymers (Basel) 2018; 10:polym10080839. [PMID: 30960764 PMCID: PMC6404012 DOI: 10.3390/polym10080839] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/25/2018] [Accepted: 07/27/2018] [Indexed: 02/06/2023] Open
Abstract
Adipose-derived mesenchymal stem cells (AD-MSCs) have been studied as desirable cell sources for regenerative medicine and therapeutic application. However, it has still remained a challenge to obtain enough adequate and healthy cells in large quantities. To overcome this limitation, various biomaterials have been used to promote expansion of MSCs in vitro. Recently, hexanoyl glycol chitosan (HGC) was introduced as a new biomaterial for various biomedical applications, in particular 3D cell culture, because of its biodegradability, biocompatibility, and other promising biofunctional properties. In this study, the effect of HGC on the proliferation of AD-MSCs was examined in vitro, and its synergistic effect with basic fibroblast growth factor (bFGF), which has been widely used to promote proliferation of cells, was evaluated. We found that the presence of HGC increased the proliferative capacity of AD-MSCs during long-term culture, even at low concentrations of bFGF. Furthermore, it suppressed the expression of senescence-related genes and improved the mitochondrial functionality. Taken all together, these findings suggest that the HGC demonstrate a potential for sustained growth of AD-MSCs in vitro.
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Affiliation(s)
- Young-Hoon Jeong
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea.
| | - Hye Min Oh
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea.
| | - Man Ryul Lee
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soon Chun Hyang University, Cheonan 31151, Korea.
| | - C-Yoon Kim
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea.
| | - Chanyang Joo
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea.
| | - Soon-Jung Park
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea.
| | - Yun-Ho Song
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea.
| | - Changhee Kang
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea.
| | - Hyung-Min Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea.
| | - Sun-Woong Kang
- Predictive Model Research Center, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea.
- Department of Human and Environmental Toxicology, University of Science and Technology, Daejeon 34114, Korea.
| | - Kang Moo Huh
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea.
| | - Sung-Hwan Moon
- Department of Medicine, School of Medicine, Konkuk University, Seoul 05029, Korea.
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Aboulhoda BE, Abd el Fattah S. Bone marrow-derived versus adipose-derived stem cells in wound healing: value and route of administration. Cell Tissue Res 2018; 374:285-302. [DOI: 10.1007/s00441-018-2879-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 06/22/2018] [Indexed: 02/06/2023]
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12
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Leach JK, Whitehead J. Materials-Directed Differentiation of Mesenchymal Stem Cells for Tissue Engineering and Regeneration. ACS Biomater Sci Eng 2018; 4:1115-1127. [PMID: 30035212 PMCID: PMC6052883 DOI: 10.1021/acsbiomaterials.6b00741] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cell-based therapies are a promising alternative to grafts and organ transplantation for treating tissue loss or damage due to trauma, malfunction, or disease. Over the past two decades, mesenchymal stem cells (MSCs) have attracted much attention as a potential cell population for use in regenerative medicine. While the proliferative capacity and multilineage potential of MSCs provide an opportunity to generate clinically relevant numbers of transplantable cells, their use in tissue regenerative applications has met with relatively limited success to date apart from secreting paracrine-acting factors to modulate the defect microenvironment. Presently, there is significant effort to engineer the biophysical properties of biomaterials to direct MSC differentiation and further expand on the potential of MSCs in tissue engineering, regeneration, and repair. Biomaterials can dictate MSC differentiation by modulating features of the substrate including composition, mechanical properties, porosity, and topography. The purpose of this review is to highlight recent approaches for guiding MSC fate using biomaterials and provide a description of the underlying characteristics that promote differentiation toward a desired phenotype.
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Affiliation(s)
- J. Kent Leach
- Department of Biomedical Engineering, University of California, Davis, Davis, CA 95616
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Medical Center, Sacramento, C 95817
| | - Jacklyn Whitehead
- Department of Biomedical Engineering, University of California, Davis, Davis, CA 95616
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Thomas D, O'Brien T, Pandit A. Toward Customized Extracellular Niche Engineering: Progress in Cell-Entrapment Technologies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1703948. [PMID: 29194781 DOI: 10.1002/adma.201703948] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 09/12/2017] [Indexed: 06/07/2023]
Abstract
The primary aim in tissue engineering is to repair, replace, and regenerate dysfunctional tissues to restore homeostasis. Cell delivery for repair and regeneration is gaining impetus with our understanding of constructing tissue-like environments. However, the perpetual challenge is to identify innovative materials or re-engineer natural materials to model cell-specific tissue-like 3D modules, which can seamlessly integrate and restore functions of the target organ. To devise an optimal functional microenvironment, it is essential to define how simple is complex enough to trigger tissue regeneration or restore cellular function. Here, the purposeful transition of cell immobilization from a cytoprotection point of view to that of a cell-instructive approach is examined, with advances in the understanding of cell-material interactions in a 3D context, and with a view to further application of the knowledge for the development of newer and complex hierarchical tissue assemblies for better examination of cell behavior and offering customized cell-based therapies for tissue engineering.
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Affiliation(s)
- Dilip Thomas
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Galway, Ireland
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway, Galway, Ireland
- Cardiovascular Institute, Stanford University, Palo Alto, CA, 94305, USA
| | - Timothy O'Brien
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway, Galway, Ireland
| | - Abhay Pandit
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Galway, Ireland
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Aurora A, Wrice N, Walters TJ, Christy RJ, Natesan S. A PEGylated platelet free plasma hydrogel based composite scaffold enables stable vascularization and targeted cell delivery for volumetric muscle loss. Acta Biomater 2018; 65:150-162. [PMID: 29128541 DOI: 10.1016/j.actbio.2017.11.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 10/26/2017] [Accepted: 11/07/2017] [Indexed: 12/18/2022]
Abstract
Extracellular matrix (ECM) scaffolds are being used for the clinical repair of soft tissue injuries. Although improved functional outcomes have been reported, ECM scaffolds show limited tissue specific remodeling response with concomitant deposition of fibrotic tissue. One plausible explanation is the regression of blood vessels which may be limiting the diffusion of oxygen and nutrients across the scaffold. Herein we develop a composite scaffold as a vasculo-inductive platform by integrating PEGylated platelet free plasma (PFP) hydrogel with a muscle derived ECM scaffold (m-ECM). In vitro, adipose derived stem cells (ASCs) seeded onto the composite scaffold differentiated into two distinct morphologies, a tubular network in the hydrogel, and elongated structures along the m-ECM scaffold. The composite scaffold showed a high expression of ITGA5, ITGB1, and FN and a synergistic up-regulation of ang1 and tie-2 transcripts. The in vitro ability of the composite scaffold to provide extracellular milieu for cell adhesion and molecular cues to support vessel formation was investigated in a rodent volumetric muscle loss (VML) model. The composite scaffold delivered with ASCs supported robust and stable vascularization. Additionally, the composite scaffold supported increased localization of ASCs in the defect demonstrating its ability for localized cell delivery. Interestingly, ASCs were observed homing in the injured muscle and around the perivascular space possibly to stabilize the host vasculature. In conclusion, the composite scaffold delivered with ASCs presents a promising approach for scaffold vascularization. The versatile nature of the composite scaffold also makes it easily adaptable for the repair of soft tissue injuries. STATEMENT OF SIGNIFICANCE Decellularized extracellular matrix (ECM) scaffolds when used for soft tissue repair is often accompanied by deposition of fibrotic tissue possibly due to limited scaffold vascularization, which limits the diffusion of oxygen and nutrients across the scaffold. Although a variety of scaffold vascularization strategies has been investigated, their limitations preclude rapid clinical translation. In this study we have developed a composite scaffold by integrating bi-functional polyethylene glycol modified platelet free plasma (PEGylated PFP) with adipose derived stem cells (ASCs) along with a muscle derived ECM scaffold (m-ECM). The composite scaffold provides a vasculo-inductive and an effective cell delivery platform for volumetric muscle loss.
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Gettler BC, Zakhari JS, Gandhi PS, Williams SK. Formation of Adipose Stromal Vascular Fraction Cell-Laden Spheroids Using a Three-Dimensional Bioprinter and Superhydrophobic Surfaces. Tissue Eng Part C Methods 2017; 23:516-524. [PMID: 28665236 DOI: 10.1089/ten.tec.2017.0056] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The therapeutic infusion of adipose-derived stromal vascular fraction (SVF) cells for the treatment of multiple diseases, has progressed to numerous human clinical trials; however, the often poor retention of the cells following implantation remains a common drawback of direct cell injection. One solution to cellular retention at the injection site has been the use of biogels to encapsulate cells within a microenvironment before and upon implantation. The current study utilized three-dimensional bioprinting technology to evaluate the ability to form SVF cell-laden spheroids with collagen I as a gel-forming biomatrix. A superhydrophobic surface was created to maintain the bioprinted structures in a spheroid shape. A hydrophilic disc was printed onto the hydrophobic surface to immobilize the spheroids during the gelation process. Conditions for the automated rapid formation of SVF cell-laden spheroids were explored, including time/pressure relationships for spheroid extrusion during bioprinting. The formed spheroids maintain SVF viability in both static culture and dynamic spinner culture. Spheroids also undergo a time-dependent contraction with the retention of angiogenic sprout phenotype over the 14-day culture period. The use of a biphilic surface exhibiting both superhydrophobicity to maintain the spheroid shape and a hydrophilicity to immobilize the spheroid during gel formation produces SVF cell-laden spheroids that can be immediately transplanted for therapeutic applications.
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Affiliation(s)
- Brian C Gettler
- Cardiovascular Innovation Institute, University of Louisville , Louisville, Kentucky
| | - Joseph S Zakhari
- Cardiovascular Innovation Institute, University of Louisville , Louisville, Kentucky
| | - Piyani S Gandhi
- Cardiovascular Innovation Institute, University of Louisville , Louisville, Kentucky
| | - Stuart K Williams
- Cardiovascular Innovation Institute, University of Louisville , Louisville, Kentucky
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Gil J, Natesan S, Li J, Valdes J, Harding A, Solis M, Davis SC, Christy RJ. A PEGylated fibrin hydrogel-based antimicrobial wound dressing controls infection without impeding wound healing. Int Wound J 2017; 14:1248-1257. [PMID: 28771993 DOI: 10.1111/iwj.12791] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 06/08/2017] [Accepted: 06/15/2017] [Indexed: 02/06/2023] Open
Abstract
Combat injuries are associated with a high incidence of infection, and there is a continuing need for improved approaches to control infection and promote wound healing. Due to the possible local and systemic adverse effects of standard 1% cream formulation (Silvadene), we had previously developed a polyethylene glycol (PEGylated) fibrin hydrogel (FPEG)-based wound dressing for the controlled delivery of silver sulfadiazine (SSD) entrapped in chitosan microspheres (CSM). In this study, we have evaluated the antimicrobial and wound healing efficacy of SSD-CSM-FPEG using a full-thickness porcine wound infected with Pseudomonas aeruginosa. Infected wounds treated with a one-time application of the SSD-CSM-FPEG wound dressing demonstrated significantly reduced bacterial bioburden over time (99·99% of reduction by day 11; P < 0·05) compared with all the other treatment groups. The epithelial thickness and granulation of the wound bed was significantly better on day 7 (150·9 ± 13·12 µm), when compared with other treatment groups. Overall, our findings demonstrate that the SSD-CSM-FPEG wound dressing effectively controls P. aeruginosa infection and promotes wound healing by providing a favourable environment that induces neovascularisation. Collectively, sustained release of SSD using fibrin hydrogel exhibited enhanced benefits when compared with the currently available SSD treatment, and this may have significant implications in the bacterial reduction of infected wounds in military and civilian populations.
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Affiliation(s)
- Joel Gil
- Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Shanmugasundaram Natesan
- Department of Extremity Trauma Research and Regenerative Medicine, United States Army Institute of Surgical Research, Houston, TX, USA
| | - Jie Li
- Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Jose Valdes
- Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Andrew Harding
- Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Michael Solis
- Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Stephen C Davis
- Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Robert J Christy
- Department of Extremity Trauma Research and Regenerative Medicine, United States Army Institute of Surgical Research, Houston, TX, USA
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Hackethal J, Mühleder S, Hofer A, Schneider KH, Prüller J, Hennerbichler S, Redl H, Teuschl A. An Effective Method ofAtelocollagenType 1/3 Isolation from Human Placenta and ItsIn VitroCharacterization in Two-Dimensional and Three-Dimensional Cell Culture Applications. Tissue Eng Part C Methods 2017; 23:274-285. [DOI: 10.1089/ten.tec.2017.0016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Johannes Hackethal
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Severin Mühleder
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Alexandra Hofer
- Research Area Biochemical Engineering, Institute of Chemical Engineering, Vienna University of Technology, Vienna, Austria
| | - Karl Heinrich Schneider
- Center of Biomedical Research, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria
| | - Johanna Prüller
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Department of Biochemical Engineering, University of Applied Sciences Technikum Wien, Vienna, Austria
| | - Simone Hennerbichler
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Red Cross Blood Transfusion Service of Upper Austria, Linz, Austria
| | - Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Andreas Teuschl
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Department of Biochemical Engineering, University of Applied Sciences Technikum Wien, Vienna, Austria
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Alaribe FN, Manoto SL, Motaung SCKM. Scaffolds from biomaterials: advantages and limitations in bone and tissue engineering. Biologia (Bratisl) 2016. [DOI: 10.1515/biolog-2016-0056] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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20
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Berndt M, Li Y, Seyedhassantehrani N, Yao L. Fabrication and characterization of microspheres encapsulating astrocytes for neural regeneration. ACS Biomater Sci Eng 2016; 3:1313-1321. [PMID: 28948211 DOI: 10.1021/acsbiomaterials.6b00229] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Astrocytes play a critical role in supporting the normal physiological function of neurons. Recent studies have revealed that astrocyte transplantation can promote axonal regeneration and functional recovery after spinal cord injury. Biomaterial can be designed as a growth-permissive substrate and serve as a carrier for astrocyte transplantation into injured spinal cord. In this study, we developed a method to generate collagen microspheres encapsulating astrocytes by injecting a mixture of collagen and astrocytes into a cell culture medium with a syringe controlled by a syringe pump. The collagen microspheres were crosslinked with poly(ethylene glycol) ether tetrasuccinimidyl glutarate (4S-StarPEG) to reduce the degradation rate. The viability of cells in the crosslinked microspheres was higher than 90%. Astrocytes were transfected with plasmids encoding nerve growth factor (NGF)-ires-enhanced green fluorescent protein (EGFP) genes by electroporation and encapsulated in crosslinked microspheres. The level of NGF released into the cell culture medium was higher than that remaining in the microspheres or astrocytes. When microspheres encapsulating astrocytes transfected with plasmids encoding NGF-ires-EGFP genes were added into the cultured rat dorsal root ganglion, the axonal growth was significantly enhanced. This study shows that the microspheres can be potentially used as a carrier of astrocytes to promote nerve regeneration in injured neural tissue.
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Affiliation(s)
- Marcus Berndt
- Department of Biological Sciences, Wichita State University, Fairmount 1845, Wichita, KS, 67260, USA
| | - Yongchao Li
- Department of Biological Sciences, Wichita State University, Fairmount 1845, Wichita, KS, 67260, USA
| | - Negar Seyedhassantehrani
- Department of Biological Sciences, Wichita State University, Fairmount 1845, Wichita, KS, 67260, USA
| | - Li Yao
- Department of Biological Sciences, Wichita State University, Fairmount 1845, Wichita, KS, 67260, USA
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Zhang Z, Eyster TW, Ma PX. Nanostructured injectable cell microcarriers for tissue regeneration. Nanomedicine (Lond) 2016; 11:1611-28. [PMID: 27230960 PMCID: PMC5619097 DOI: 10.2217/nnm-2016-0083] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/05/2016] [Indexed: 11/21/2022] Open
Abstract
Biodegradable polymer microspheres have emerged as cell carriers for the regeneration and repair of irregularly shaped tissue defects due to their injectability, controllable biodegradability and capacity for drug incorporation and release. Notably, recent advances in nanotechnology allowed the manipulation of the physical and chemical properties of the microspheres at the nanoscale, creating nanostructured microspheres mimicking the composition and/or structure of natural extracellular matrix. These nanostructured microspheres, including nanocomposite microspheres and nanofibrous microspheres, have been employed as cell carriers for tissue regeneration. They enhance cell attachment and proliferation, promote positive cell-carrier interactions and facilitate stem cell differentiation for target tissue regeneration. This review highlights the recent advances in nanostructured microspheres that are employed as injectable, biomimetic and cell-instructive cell carriers.
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Affiliation(s)
- Zhanpeng Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
| | - Thomas W Eyster
- Department of Biologic & Materials Sciences, University of Michigan, Ann Arbor, MI 48109-1078, USA
| | - Peter X Ma
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Department of Biologic & Materials Sciences, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Macromolecular Science & Engineering Center, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Materials Science & Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
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Combellack EJ, Jessop ZM, Naderi N, Griffin M, Dobbs T, Ibrahim A, Evans S, Burnell S, Doak SH, Whitaker IS. Adipose regeneration and implications for breast reconstruction: update and the future. Gland Surg 2016; 5:227-41. [PMID: 27047789 PMCID: PMC4791352 DOI: 10.3978/j.issn.2227-684x.2016.01.01] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 10/17/2015] [Indexed: 12/20/2022]
Abstract
The evolution of breast reconstruction and management of breast cancer has evolved significantly since the earliest descriptions in the Edwin Smith Papyrus (3,000 BC). The development of surgical and scientific expertise has changed the way that women are managed, and plastic surgeons are now able to offer a wide range of reconstructive options to suit individual needs. Beyond the gold standard autologous flap based reconstructions, regenerative therapies promise the elimination of donor site morbidity whilst providing equivalent aesthetic and functional outcomes. Future research aims to address questions regarding ideal cell source, optimisation of scaffold composition and interaction of de novo adipose tissue in the microenvironment of breast cancer.
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23
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Cherubino M, Valdatta L, Balzaretti R, Pellegatta I, Rossi F, Protasoni M, Tedeschi A, Accolla RS, Bernardini G, Gornati R. Human adipose-derived stem cells promote vascularization of collagen-based scaffolds transplanted into nude mice. Regen Med 2016; 11:261-71. [PMID: 26965659 PMCID: PMC4976995 DOI: 10.2217/rme-2015-0010] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
AIM After in vivo implantation of cell-loaded devices, only the cells close to the capillaries can obtain nutrients to maintain their functions. It is known that factors secreted by stem cells, rather than stem cells themselves, are fundamental to guarantee new vascularization in the area of implant. MATERIALS & METHODS To investigate this possibility, we have grafted mice with Bilayer and Flowable Integra(®) scaffolds, loaded or not with human adipose-derived stem cells. RESULTS Our results support the therapeutic potential of human adipose-derived stem cells to induce new vascular networks of engineered organs and tissues. CONCLUSION This finding suggests that our approach can help to form new vascular networks that allow sufficient vascularization of engineered organs and tissues in cases of difficult wound healing due to ischemic conditions.
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Affiliation(s)
- Mario Cherubino
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Via Dunant 3, Varese, Italy
| | - Luigi Valdatta
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Via Dunant 3, Varese, Italy
| | - Riccardo Balzaretti
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Via Dunant 3, Varese, Italy
| | - Igor Pellegatta
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Via Dunant 3, Varese, Italy
| | - Federica Rossi
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Via Dunant 3, Varese, Italy
| | - Marina Protasoni
- Dipartimento di Scienze Chirurgiche e Morfologiche, Università degli Studi dell'Insubria, Via Guicciardini 9, 21100 Varese, Italy
| | - Alessandra Tedeschi
- Dipartimento di Scienze Chirurgiche e Morfologiche, Università degli Studi dell'Insubria, Via Guicciardini 9, 21100 Varese, Italy
| | - Roberto S Accolla
- Dipartimento di Scienze Chirurgiche e Morfologiche, Università degli Studi dell'Insubria, Via Guicciardini 9, 21100 Varese, Italy
| | - Giovanni Bernardini
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Via Dunant 3, Varese, Italy.,"The Protein Factory" Research Center, Politecnico di Milano, ICRM-CNR Milano & Università dell'Insubria, Via Mancinelli 7, Milano, Italy
| | - Rosalba Gornati
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Via Dunant 3, Varese, Italy.,"The Protein Factory" Research Center, Politecnico di Milano, ICRM-CNR Milano & Università dell'Insubria, Via Mancinelli 7, Milano, Italy
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Wehmeyer JL, Natesan S, Christy RJ. Development of a Sterile Amniotic Membrane Tissue Graft Using Supercritical Carbon Dioxide. Tissue Eng Part C Methods 2015; 21:649-59. [DOI: 10.1089/ten.tec.2014.0304] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jennifer L. Wehmeyer
- Extremity Trauma Research and Regenerative Medicine, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas
| | - Shanmugasundaram Natesan
- Extremity Trauma Research and Regenerative Medicine, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas
| | - Robert J. Christy
- Extremity Trauma Research and Regenerative Medicine, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas
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Yao L, Phan F, Li Y. Collagen microsphere serving as a cell carrier supports oligodendrocyte progenitor cell growth and differentiation for neurite myelination in vitro. Stem Cell Res Ther 2014; 4:109. [PMID: 24018105 PMCID: PMC3854863 DOI: 10.1186/scrt320] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/12/2013] [Accepted: 09/06/2013] [Indexed: 01/14/2023] Open
Abstract
Introduction Microspheres fabricated from natural materials serve as a promising biodegradable and biocompatible carrier in a small volume for efficient cell delivery to the lesion of the injured neural tissue to generate biological functions. As the major component of extracellular matrix and due to its natural abundance within the body, collagen may be fabricated into microspheres and improve the ability of pre-seeded cells on the microspheres to encounter the hostile micro-environment in the lesion. Methods In this study, collagen microspheres were fabricated using the water-in-oil emulsion technique and cross-linked with 1-ethyl-3-(3-dimethylaminopropryl) carbodiimide. Oligodendrocyte progenitor cells isolated from postnatal day P1 to 2 rats were cultured and differentiated on the microspheres. The microspheres carrying the oligodendrocyte progenitor cells were co-cultured with dorsal root ganglions from 15-day-old rat embryos. The myelination formation was studied for the co-culture of oligodendrocyte progenitor cells and dorsal root ganglions. Results We showed that the viability of oligodendrocyte progenitor cells, B104 cells and PC12 cells grown on microspheres was not significantly different with those in cell culture plates. Oligodendrocyte progenitor cells differentiated into oligodendrocytes on collagen microspheres. The oligodendrocytes grown on microspheres extended processes that wrapped the axons of dorsal root ganglion neurons and the formation of myelin sheath was observed in the co-culture. Conclusions This study demonstrates the feasibility of collagen microspheres in further applications for the delivery of neural progenitor cells for neural regeneration.
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Ansboro S, Hayes JS, Barron V, Browne S, Howard L, Greiser U, Lalor P, Shannon F, Barry FP, Pandit A, Murphy JM. A chondromimetic microsphere for in situ spatially controlled chondrogenic differentiation of human mesenchymal stem cells. J Control Release 2014; 179:42-51. [DOI: 10.1016/j.jconrel.2014.01.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 01/19/2014] [Accepted: 01/22/2014] [Indexed: 12/20/2022]
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Garg T, Goyal AK. Biomaterial-based scaffolds – current status and future directions. Expert Opin Drug Deliv 2014; 11:767-89. [DOI: 10.1517/17425247.2014.891014] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Cheng X, Tsao C, Sylvia VL, Cornet D, Nicolella DP, Bredbenner TL, Christy RJ. Platelet-derived growth-factor-releasing aligned collagen-nanoparticle fibers promote the proliferation and tenogenic differentiation of adipose-derived stem cells. Acta Biomater 2014; 10:1360-9. [PMID: 24291329 DOI: 10.1016/j.actbio.2013.11.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 10/17/2013] [Accepted: 11/20/2013] [Indexed: 01/08/2023]
Abstract
In order to enhance the healing potential of an injured tendon, we have prepared a novel biomimetic aligned collagen-nanoparticle (NP) composite fiber using an electrochemical process. The aligned collagen-NP composite fiber is designed to affect the cellular activity of adipose-derived stem cells (ADSCs) through two different ways: (i) topographic cues from the alignment of collagen fibril and (ii) controlled release of platelet-derived growth factors (PDGFs) from the NPs. PDGF released from collagen-NP fibers significantly enhanced the proliferation of ADSCs when tested for up to 7 days. Moreover, compared to random collagen fibers with PDGFs, aligned collagen-NP fibers significantly promoted the desirable tenogenic differentiation of ADSCs, as evidenced by an increased level of tendon markers such as tenomodulin and scleraxis. On the other hand, no undesirable osteogenic differentiation, as measured by the unchanged level of alkaline phosphatase and osteocalcin, was observed. Together, these results indicate that the aligned collagen-NP composite fiber induced the tenogenic differentiation of ADSCs through both a topographic cue (aligned collagen fibril) and a chemical cue (PDGF released from NPs). Thus, our novel aligned collagen-NP composite fiber has a significant potential to be used for tendon tissue engineering and regeneration.
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Affiliation(s)
- XingGuo Cheng
- Microencapsulation and Nanomaterials Department, Southwest Research Institute, 6220 Culebra Rd, San Antonio, TX 78238, USA.
| | - Christopher Tsao
- Microencapsulation and Nanomaterials Department, Southwest Research Institute, 6220 Culebra Rd, San Antonio, TX 78238, USA
| | - Victor L Sylvia
- Department of Orthopedics, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr., San Antonio, TX 78229, USA
| | - Douglas Cornet
- Department of Orthopedics, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr., San Antonio, TX 78229, USA
| | - Daniel P Nicolella
- Materials Engineering Department, Southwest Research Institute, 6220 Culebra Rd, San Antonio, TX 78238, USA
| | - Todd L Bredbenner
- Materials Engineering Department, Southwest Research Institute, 6220 Culebra Rd, San Antonio, TX 78238, USA
| | - Robert J Christy
- Extremity Trauma and Regenerative Medicine Program, US Army Institute of Surgical Research, 3698 Chambers Pass, Fort Sam Houston, TX 78234, USA
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Werner BC, Li X, Shen FH. Stem cells in preclinical spine studies. Spine J 2014; 14:542-51. [PMID: 24246748 DOI: 10.1016/j.spinee.2013.08.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 07/05/2013] [Accepted: 08/23/2013] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT The recent identification and characterization of mesenchymal stem cells have introduced a shift in the research focus for future technologies in spinal surgery to achieve spinal fusion and treat degenerative disc disease. Current and past techniques use allograft to replace diseased tissue or rely on host responses to recruit necessary cellular progenitors. Adult stem cells display long-term proliferation, efficient self-renewal, and multipotent differentiation. PURPOSE This review will focus on two important applications of stem cells in spinal surgery: spine fusion and the management of degenerative disc disease. STUDY DESIGN Review of the literature. METHODS Relevant preclinical literature regarding stem cell sources, growth factors, scaffolds, and animal models for both osteogenesis and chondrogenesis will be reviewed, with an emphasis on those studies that focus on spine applications of these technologies. RESULTS In both osteogenesis and chondrogenesis, adult stem cells derived from bone marrow or adipose show promise in preclinical studies. Various growth factors and scaffolds have also been shown to enhance the properties and eventual clinical potential of these cells. Although its utility in clinical applications has yet to be proven, gene therapy has also been shown to hold promise in preclinical studies. CONCLUSIONS The future of spine surgery is constantly evolving, and the recent advancements in stem cell-based technologies for both spine fusion and the treatment of degenerative disc disease is promising and indicative that stem cells will undoubtedly play a major role clinically. It is likely that these stem cells, growth factors, and scaffolds will play a critical role in the future for replacing diseased tissue in disease processes such as degenerative disc disease and in enhancing host tissue to achieve more reliable spine fusion.
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Affiliation(s)
- Brian C Werner
- Department of Orthopaedic Surgery, University of Virginia, PO Box 800159, Charlottesville, VA 22908-0159 USA
| | - Xudong Li
- Department of Orthopaedic Surgery, University of Virginia, PO Box 800159, Charlottesville, VA 22908-0159 USA
| | - Francis H Shen
- Department of Orthopaedic Surgery, University of Virginia, PO Box 800159, Charlottesville, VA 22908-0159 USA.
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Fang X, Murakami H, Demura S, Hayashi K, Matsubara H, Kato S, Yoshioka K, Inoue K, Ota T, Shinmura K, Tsuchiya H. A novel method to apply osteogenic potential of adipose derived stem cells in orthopaedic surgery. PLoS One 2014; 9:e88874. [PMID: 24586422 PMCID: PMC3929506 DOI: 10.1371/journal.pone.0088874] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 01/16/2014] [Indexed: 01/22/2023] Open
Abstract
Background A number of publications have reported that adipose derived stem cells (ADSCs) have the capacity to be induced to differentiate into osteoblasts both in vitro and in vivo. However, it has been difficult to use separate ADSCs for cortical bone regeneration and bone reconstruction so far. Inspired by the research around stromal stem cells and cell sheets, we developed a new method to fabricate ADSCs sheets to accelerate and enhance the bone regeneration and bone reconstruction. Purpose To fabricate ADSCs sheets and evaluate their capacity to be induced to differentiate to osteoblasts in vitro. Methods Human adipose derived stem cells (hADSCs) were employed in this research. The fabricating medium containing 50 µM ascorbate-2-phosphate was used to enhance the secretion of collagen protein by the ADSCs and thus to make the cell sheets of ADSCs. As the separate ADSCs were divided into osteo-induction group and control group, the ADSCs sheets were also divided into two groups depending on induction by osteogenesis medium or no induction. The osteogenic capacity of each group was evaluated by ALP staining, Alizarin Red staining and ALP activity. Results The ADSCs sheets were fabricated after one-week culture in the fabricating medium. The ALP staining of ADSCs sheets showed positive results after 5 days osteo-induction and the Alizarin Red staining of ADSCs sheets showed positive results after 1 week osteo-induction. The ALP activity showed significant differences between these four groups. The ALP activity of ADSCs sheets groups showed higher value than that of separate ADSCs. Conclusion The experiments demonstrated that ADSCs sheets have better capacity than separate ADSCs to be induced to differentiate into osteoblasts. This indicates that it is possible to use the ADSCs sheets as a source of mesenchymal stem cells for bone regeneration and bone reconstruction.
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Affiliation(s)
- Xiang Fang
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
| | - Hideki Murakami
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
| | - Satoru Demura
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
| | - Katsuhiro Hayashi
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
| | | | - Satoshi Kato
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
| | | | - Kei Inoue
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
| | - Takashi Ota
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
| | - Kazuya Shinmura
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
| | - Hiroyuki Tsuchiya
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
- * E-mail:
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Kilgore JA, Dolman NJ, Davidson MW. A review of reagents for fluorescence microscopy of cellular compartments and structures, Part III: reagents for actin, tubulin, cellular membranes, and whole cell and cytoplasm. ACTA ACUST UNITED AC 2014; 67:12.32.1-12.32.17. [PMID: 24510770 DOI: 10.1002/0471142956.cy1232s67] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Non-antibody commercial fluorescent reagents for imaging of cytoskeletal structures have been limited primarily to tubulin and actin, with the main factor in choice based mainly on whether cells are live or fixed and permeabilized. A wider range of options exist for cell membrane dyes, and the choice of reagent primarily depends on the preferred localization in the cell (i.e., all membranes or only the plasma membrane) and usage (i.e., whether the protocol involves fixation and permeabilization). For whole-cell or cytoplasmic imaging, the choice of reagent is determined mostly by the length of time that the cells need to be visualized (hours or days) and by fixation status. Presented here is a discussion on choosing commercially available reagents for these cellular structures, with an emphasis on use for microscopic imaging, with a featured reagent for each structure, a recommended protocol, troubleshooting guide, and example image.
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Affiliation(s)
- Jason A Kilgore
- Molecular Probes Labeling and Detection, Life Technologies, Eugene, Oregon
| | - Nick J Dolman
- Molecular Probes Labeling and Detection, Life Technologies, Eugene, Oregon
| | - Michael W Davidson
- National High Magnetic Field Laboratory and Department of Biological Science, Florida State University, Tallahassee, Florida
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Ferraro GA, De Francesco F, Nicoletti G, Paino F, Desiderio V, Tirino V, D'Andrea F. Human adipose CD34+ CD90+ stem cells and collagen scaffold constructs grafted in vivo fabricate loose connective and adipose tissues. J Cell Biochem 2013; 114:1039-49. [PMID: 23129214 DOI: 10.1002/jcb.24443] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Accepted: 10/24/2012] [Indexed: 12/12/2022]
Abstract
Stem cell based therapies for the repair and regeneration of various tissues are of great interest for a high number of diseases. Adult stem cells, instead, are more available, abundant and harvested with minimally invasive procedures. In particular, mesenchymal stem cells (MSCs) are multi-potent progenitors, able to differentiate into bone, cartilage, and adipose tissues. Human adult adipose tissue seems to be the most abundant source of MSCs and, due to its easy accessibility; it is able to give a considerable amount of stem cells. In this study, we selected MSCs co-expressing CD34 and CD90 from adipose tissue. This stem cell population displayed higher proliferative capacity than CD34(-) CD90(-) cells and was able to differentiate in vitro into adipocytes (PPARγ(+) and adiponectin(+)) and endothelial cells (CD31(+) VEGF(+) Flk1(+)). In addition, in methylcellulose without VEGF, it formed a vascular network. The aim of this study was to investigate differentiation potential of human adipose CD34(+) /CD90(+) stem cells loaded onto commercial collagen sponges already used in clinical practice (Gingistat) both in vitro and in vivo. The results of this study clearly demonstrate that human adult adipose and loose connective tissues can be obtained in vivo, highlighting that CD34(+) /CD90 ASCs are extremely useful for regenerative medicine.
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Affiliation(s)
- Giuseppe A Ferraro
- Dipartimento di Scienze Ortopediche, Riabilitative, Traumatologiche e Plastico-Ricostruttive, Seconda Università degli Studi di Napoli, Italy
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Kim SJ, Park SH, Sung YC, Kim SW. Effect of mesenchymal stem cells associated to matrixen on the erectile function in the rat model with bilateral cavernous nerve crushing injury. Int Braz J Urol 2013; 38:833-41. [PMID: 23302404 DOI: 10.1590/1677-553820133806833] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2012] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVES To evaluate the effect of mesenchymal stem cells (MSCs) and MSCs mixed with Matrixen as a cell carrier on the erectile dysfunction caused by bilateral cavernous nerve crushing injury. MATERIALS AND METHODS White male Sprague-Dawley rats were divided into 4 groups: sham-operated control group (n = 5), bilateral cavernous nerve crushing group (BCNC group, n = 10), BCNC administered with MSCs group (n = 10,1x106 in 20 µL), BCNC administered with Matrixen group (n = 10.1x106 in 20 µL), BCNC administered with MSCs/Matrixen group (n = 10.1x106 in 20 µL). After functional assessment at 4 weeks, major pelvic ganglion (MPG) and penile tissue were collected. Immunofluorescent staining of MPG was performed with PKH26 and Tuj1. Western blot analysis of endothelial nitric oxide synthase (eNOS) and neuronal nitric oxide synthase (nNOS) were done in corpus cavernosum. RESULTS ICP/MAP ratios of BCNC with MSCs and MSCs/Matrixen groups were significantly increased compared with BCNC and BCNC with Matrixen group. Moreover, ICP/MAP ratios of MSCs/Matrixen group were significantly increased compared with BCNC with MSCs group. In MPG, the more implantation of MSCs and increased expression of nerve cells were observed in MSCs/Matrixen group compared with BCNC with MSCs group. Significant increase expression of eNOS and nNOS was also noted in BCNC with MSCs/Matrixen group. CONCLUSION The erectile function was more preserved in MSCs/Matrixen group compared with the administration of MSCs alone in the rats with bilateral cavernous nerve crushing injury. Therefore, we consider that the use of transplant cell carrier such as Matrixen may help the implantation of MSCs and improve the therapeutic effect of MSCs.
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Affiliation(s)
- Su Jin Kim
- Department of Urology, Catholic University of Korea, College of Medicine, Pohang, Republic of Korea
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Oh J, Kim K, Won SW, Cha C, Gaharwar A, Selimović Š, Bae H, Lee KH, Lee DH, Lee SH, Khademhosseini A. Microfluidic fabrication of cell adhesive chitosan microtubes. Biomed Microdevices 2013; 15:465-72. [PMID: 23355068 PMCID: PMC3651799 DOI: 10.1007/s10544-013-9746-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Chitosan has been used as a scaffolding material in tissue engineering due to its mechanical properties and biocompatibility. With increased appreciation of the effect of micro- and nanoscale environments on cellular behavior, there is increased emphasis on generating microfabricated chitosan structures. Here we employed a microfluidic coaxial flow-focusing system to generate cell adhesive chitosan microtubes of controlled sizes by modifying the flow rates of a chitosan pre-polymer solution and phosphate buffered saline (PBS). The microtubes were extruded from a glass capillary with a 300 μm inner diameter. After ionic crosslinking with sodium tripolyphosphate (TPP), fabricated microtubes had inner and outer diameter ranges of 70-150 μm and 120-185 μm. Computational simulation validated the controlled size of microtubes and cell attachment. To enhance cell adhesiveness on the microtubes, we mixed gelatin with the chitosan pre-polymer solution. During the fabrication of microtubes, fibroblasts suspended in core PBS flow adhered to the inner surface of chitosan-gelatin microtubes. To achieve physiological pH values, we adjusted pH values of chiotsan pre-polymer solution and TPP. In particular, we were able to improve cell viability to 92 % with pH values of 5.8 and 7.4 for chitosan and TPP solution respectively. Cell culturing for three days showed that the addition of the gelatin enhanced cell spreading and proliferation inside the chitosan-gelatin microtubes. The microfluidic fabrication method for ionically crosslinked chitosan microtubes at physiological pH can be compatible with a variety of cells and used as a versatile platform for microengineered tissue engineering.
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Affiliation(s)
- Jonghyun Oh
- Center for Biomedical Engineering, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Keekyoung Kim
- Center for Biomedical Engineering, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA 02115, USA
| | - Sung Wook Won
- Center for Biomedical Engineering, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Chaenyung Cha
- Center for Biomedical Engineering, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Akhilesh Gaharwar
- Center for Biomedical Engineering, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA 02115, USA
| | - Šeila Selimović
- Center for Biomedical Engineering, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hojae Bae
- Center for Biomedical Engineering, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kwang Ho Lee
- Department of Advanced Materials Science and Engineering, Kangwon National University, Chuncheon 200-701, South Korea
| | - Dong Hwan Lee
- Department of Mechanical Design Engineering, Chonbuk National University, Jeonju 664-14, South Korea
| | - Sang-Hoon Lee
- Department of Biomedical Engineering, College of Health Science, Korea University, Seoul 136-703, South Korea
| | - Ali Khademhosseini
- Center for Biomedical Engineering, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA 02115, USA
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Current trends in the development of wound dressings, biomaterials and devices. Pharm Pat Anal 2013; 2:341-59. [DOI: 10.4155/ppa.13.18] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Wound management covers all aspects of patient care from initial injury, treatment of infection, fluid loss, tissue regeneration, wound closure to final scar formation and remodeling. There are many wound-care products available including simple protective layers, hydrogels, metal ion-impregnated dressings and artificial skin substitutes, which facilitate surface closure. This review examines recent developments in wound dressings, biomaterials and devices. Particular attention is focused on the design and manufacture of hydrogel-based dressings, their polymeric constituents and chemical modification. Finally, topical negative pressure and hyperbaric oxygen therapy are considered. Current wound-management strategies can be expensive, time consuming and labor intensive. Progress in the multidisciplinary arena of wound care will address these issues and be of immense benefit to patients, by improving both clinical outcomes and their quality of life.
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Natesan S, Zamora DO, Wrice NL, Baer DG, Christy RJ. Bilayer Hydrogel With Autologous Stem Cells Derived From Debrided Human Burn Skin for Improved Skin Regeneration. J Burn Care Res 2013; 34:18-30. [DOI: 10.1097/bcr.0b013e3182642c0e] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Declercq HA, Tamara De Caluwé, Krysko O, Bachert C, Cornelissen MJ. Bone grafts engineered from human adipose-derived stem cells in dynamic 3D-environments. Biomaterials 2013; 34:1004-17. [DOI: 10.1016/j.biomaterials.2012.10.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 10/22/2012] [Indexed: 02/06/2023]
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Yao R, Zhang R, Lin F, Luan J. Injectable cell/hydrogel microspheres induce the formation of fat lobule-like microtissues and vascularized adipose tissue regeneration. Biofabrication 2012; 4:045003. [PMID: 23075755 DOI: 10.1088/1758-5082/4/4/045003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this paper, we demonstrated that collagen/alginate microspheres could be generated by a non-contact microfabrication device and serve as excellent cell embedding and delivery devices as they were porous, injectable and able to provide growth- and differentiation-supporting matrix for human adipose-derived stem cells (hASCs). The microsphere matrix demonstrated highly porous structure and mechanical stability for as long as 90 days. hASCs demonstrated high viability after microsphere formation as well as higher proliferation and more mature adipocytes induction compared to two-dimensional culture. After four weeks culture in adipogenic differentiation medium, adipocytes/collagen/alginate microspheres highly mimicking natural fat lobules were obtained and injected subcutaneously into the head of node mice. The in vivo study demonstrated vascularized adipose tissue formation in four weeks. The regenerated vasculature among the transplantation showed functional anastomosis with host vasculature, suggesting that these cell/hydrogel microspheres present injectable adipocytes delivery devices capable of generating vascularized adipose tissue in vivo and thus suitable for cell transplantation and tissue regeneration.
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Affiliation(s)
- Rui Yao
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China.
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Zamora DO, Natesan S, Christy RJ. Constructing a collagen hydrogel for the delivery of stem cell-loaded chitosan microspheres. J Vis Exp 2012:e3624. [PMID: 22688576 DOI: 10.3791/3624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Multipotent stem cells have been shown to be extremely useful in the field of regenerative medicine. However, in order to use these cells effectively for tissue regeneration, a number of variables must be taken into account. These variables include: the total volume and surface area of the implantation site, the mechanical properties of the tissue and the tissue microenvironment, which includes the amount of vascularization and the components of the extracellular matrix. Therefore, the materials being used to deliver these cells must be biocompatible with a defined chemical composition while maintaining a mechanical strength that mimics the host tissue. These materials must also be permeable to oxygen and nutrients to provide a favorable microenvironment for cells to attach and proliferate. Chitosan, a cationic polysaccharide with excellent biocompatibility, can be easily chemically modified and has a high affinity to bind with in vivo macromolecules. Chitosan mimics the glycosaminoglycan portion of the extracellular matrix, enabling it to function as a substrate for cell adhesion, migration and proliferation. In this study we utilize chitosan in the form of microspheres to deliver adipose-derived stem cells (ASC) into a collagen based three-dimensional scaffold. An ideal cell-to-microsphere ratio was determined with respect to incubation time and cell density to achieve maximum number of cells that could be loaded. Once ASC are seeded onto the chitosan microspheres (CSM), they are embedded in a collagen scaffold and can be maintained in culture for extended periods. In summary, this study provides a method to precisely deliver stem cells within a three dimensional biomaterial scaffold.
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Affiliation(s)
- David O Zamora
- Department of Regenerative Medicine, United States Army Institute of Surgical Research, USA
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Panseri S, Russo A, Cunha C, Bondi A, Di Martino A, Patella S, Kon E. Osteochondral tissue engineering approaches for articular cartilage and subchondral bone regeneration. Knee Surg Sports Traumatol Arthrosc 2012; 20:1182-91. [PMID: 21910001 DOI: 10.1007/s00167-011-1655-1] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2011] [Accepted: 08/30/2011] [Indexed: 12/16/2022]
Abstract
PURPOSE Osteochondral defects (i.e., defects which affect both the articular cartilage and underlying subchondral bone) are often associated with mechanical instability of the joint and therefore with the risk of inducing osteoarthritic degenerative changes. This review addresses the current surgical treatments and most promising tissue engineering approaches for articular cartilage and subchondral bone regeneration. METHODS The capability to repair osteochondral or bone defects remains a challenging goal for surgeons and researchers. So far, most clinical approaches have been shown to have limited capacity to treat severe lesions. Current surgical repair strategies vary according to the nature and size of the lesion and the preference of the operating surgeon. Tissue engineering has emerged as a promising alternative strategy that essentially develops viable substitutes capable of repairing or regenerating the functions of damaged tissue. RESULTS An overview of novel and most promising osteochondroconductive scaffolds, osteochondroinductive signals, osteochondrogenic precursor cells, and scaffold fixation approaches are presented addressing advantages, drawbacks, and future prospectives for osteochondral regenerative medicine. CONCLUSION Tissue engineering has emerged as an excellent approach for the repair and regeneration of damaged tissue, with the potential to circumvent all the limitations of autologous and allogeneic tissue repair. LEVEL OF EVIDENCE Systematic review, Level III.
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Affiliation(s)
- Silvia Panseri
- Laboratory of Nano-Biotechnology, Rizzoli Orthopaedic Institute, Via di Barbiano 1/10, 40136 Bologna, Italy.
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Natesan S, Zamora DO, Suggs LJ, Christy RJ. Engineering a bilayered hydrogel to control ASC differentiation. J Vis Exp 2012:e3953. [PMID: 22664758 DOI: 10.3791/3953] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Natural polymers over the years have gained more importance because of their host biocompatibility and ability to interact with cells in vitro and in vivo. An area of research that holds promise in regenerative medicine is the combinatorial use of novel biomaterials and stem cells. A fundamental strategy in the field of tissue engineering is the use of three-dimensional scaffold (e.g., decellularized extracellular matrix, hydrogels, micro/nano particles) for directing cell function. This technology has evolved from the discovery that cells need a substrate upon which they can adhere, proliferate, and express their differentiated cellular phenotype and function. More recently, it has also been determined that cells not only use these substrates for adherence, but also interact and take cues from the matrix substrate (e.g., extracellular matrix, ECM). Therefore, the cells and scaffolds have a reciprocal connection that serves to control tissue development, organization, and ultimate function. Adipose-derived stem cells (ASCs) are mesenchymal, non-hematopoetic stem cells present in adipose tissue that can exhibit multi-lineage differentiation and serve as a readily available source of cells (i.e. pre-vascular endothelia and pericytes). Our hypothesis is that adipose-derived stem cells can be directed toward differing phenotypes simultaneously by simply co-culturing them in bilayered matrices. Our laboratory is focused on dermal wound healing. To this end, we created a single composite matrix from the natural biomaterials, fibrin, collagen, and chitosan that can mimic the characteristics and functions of a dermal-specific wound healing ECM environment.
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Affiliation(s)
- Shanmugasundaram Natesan
- Department of Extremity Trauma Research and Regenerative Medicine, United States Army Institute of Surgical Research, USA
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McEwan K, Padavan DT, Deng C, Vulesevic B, Kuraitis D, Korbutt GS, Suuronen EJ. Tunable collagen hydrogels are modified by the therapeutic agents they are designed to deliver. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:1467-83. [PMID: 21771391 DOI: 10.1163/092050611x584397] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Injectable hydrogels are increasingly being developed for biomedical applications due to their ability to be delivered in a minimally invasive manner. One potential use for such materials is in cell delivery for cardiac regeneration. While the materials' properties are often characterized, how these properties (and in particular gelation) are affected by the addition of the therapeutic agent(s) they are designed to deliver is often overlooked. The aim of this study was to examine the interactive effects between collagen-based hydrogels and different additives (cells and microspheres). The results demonstrated that the incorporation of either cells or microspheres to a collagen hydrogel decreased its gelation time and increased its viscosity. Increased concentrations of the EDC/NHS cross-linker resulted in greater loss of cell viability. However, it was found that this cell loss could be minimized by delivering cells with the cross-linker scavenger glycine. A better understanding of how materials and cells (and other additives) respond to each other will help towards the goal of improving scaffolds being developed for regenerative therapy.
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Affiliation(s)
- Kimberly McEwan
- a Division of Cardiac Surgery, University of Ottawa Heart Institute , 40 Ruskin Street , Ottawa , ON , Canada , K1Y4W7
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Abstract
Adipose tissue engineering has recently gained significant attention from materials scientists as a result of the exponential growth of soft tissue filler procedures being performed within the clinic. While several injectable materials are currently being marketed for filling subcutaneous voids, they often face limited longevity due to rapid resorption. Their inability to encourage natural adipose formation or ingrowth necessitates repeated injections for a prolonged effect and thus classifies them as temporary fillers. As a result, a significant need for injectable materials that not only act as fillers but also promote in vivo adipogenesis is beginning to be realized. This paper will discuss the advantages and disadvantages of commercially available soft tissue fillers. It will then summarize the current state of research using injectable synthetic materials, biopolymers and extracellular matrix-derived materials for adipose tissue engineering. Furthermore, the successful attributes observed across each of these materials will be outlined along with a discussion of the current difficulties and future directions for adipose tissue engineering.
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Affiliation(s)
- D A Young
- Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0412, USA
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Chen Z, Wang L, Stegemann JP. Phase-separated chitosan-fibrin microbeads for cell delivery. J Microencapsul 2012; 28:344-52. [PMID: 21736519 DOI: 10.3109/02652048.2011.569764] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Matrix-enhanced delivery of cells is a promising approach to improving current cell therapies. Our objective was to create cell-laden composite microbeads that combine the attractive features of the natural polymers chitosan and fibrin. Liquid polydimethylsiloxane was used to emulsify a chitosan-fibrinogen solution containing suspended human fibroblast cells, followed by initiation of thrombin-mediated polymerization of fibrin and thermal/pH-mediated gelation of chitosan. Chitosan/fibrin weight percent (wt%) ratios of 100/0, 75/25, 50/50 and 25/75 were investigated. Microbead diameters ranged from 275 ± 99 µm to 38 ± 10 µm using impeller speeds from 600 to 1400 rpm. Fibroblasts remained viable on day 1 post-fabrication in all matrices, but cell viability was markedly higher in high-fibrin microbeads by day 8 post-fabrication. Cell spreading and interaction with the extracellular matrix was also markedly increased in high-fibrin matrices. Such composite microbeads containing viable entrapped cells have potential for minimally invasive delivery of cells for a variety of tissue repair applications.
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Affiliation(s)
- Zhewei Chen
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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Seetharaman S, Natesan S, Stowers RS, Mullens C, Baer DG, Suggs LJ, Christy RJ. A PEGylated fibrin-based wound dressing with antimicrobial and angiogenic activity. Acta Biomater 2011; 7:2787-96. [PMID: 21515420 DOI: 10.1016/j.actbio.2011.04.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Revised: 03/08/2011] [Accepted: 04/07/2011] [Indexed: 11/16/2022]
Abstract
Wounds sustained under battlefield conditions are considered to be contaminated and their initial treatment should focus on decreasing this contamination and thus reducing the possibility of infection. The early and aggressive administration of antimicrobial treatment starting with intervention on the battlefield has resulted in improved patient outcomes and is considered the standard of care. Chitosan microspheres (CSM) loaded with silver sulfadiazine (SSD) were developed via a novel water-in-oil emulsion technique to address this problem. The SSD-loaded spheres were porous with needle-like structures (attributed to SSD) that were evenly distributed over the spheres. The average particle size of the SSD-CSM was 125-180 μm with 76.50 ± 2.8% drug entrapment. As a potential new wound dressing with angiogenic activity SSD-CSM particles were impregnated in polyethylene glycol (PEGylated) fibrin gels. In vitro drug release studies showed that a burst release of 27.02% in 6h was achieved, with controlled release for 72 h, with an equilibrium concentration of 27.7% (70 μg). SSD-CSM-PEGylated fibrin gels were able to exhibit microbicidal activity at 125 and 100 μg ml(-1) against Staphylococcus aureus and Pseudomonas aeruginosa, respectively. The in vitro vasculogenic activity of this composite dressing was shown by seeding adipose-derived stem cells (ASC) in SSD-CSM-PEGylated fibrin gels. The ASC spontaneously formed microvascular tube-like structures without the addition of any exogenous factors. This provides a method for the extended release of an antimicrobial drug in a matrix that may provide an excellent cellular environment for revascularization of infected wounds.
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Scott MA, Nguyen VT, Levi B, James AW. Current methods of adipogenic differentiation of mesenchymal stem cells. Stem Cells Dev 2011; 20:1793-804. [PMID: 21526925 DOI: 10.1089/scd.2011.0040] [Citation(s) in RCA: 160] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
There has been a recent increase in our understanding in the isolation, culture, and differentiation of mesenchymal stem cells (MSCs). Concomitantly, the availability of MSCs has increased, with cells now commercially available, including human MSCs from adipose tissue and bone marrow. Despite an increased understanding of MSC biology and an increase in their availability, standardization of techniques for adipogenic differentiation of MSCs is lacking. The following review will explore the variability in adipogenic differentiation in vitro, specifically in 3T3-L1 and primary MSCs derived from both adipose tissue and bone marrow. A review of alternative methods of adipogenic induction is also presented, including the use of specific peroxisome proliferator-activated receptor-gamma agonists as well as bone morphogenetic proteins. Finally, we define a standard, commonly used adipogenic differentiation medium in the hopes that this will be adopted for the future standardization of laboratory techniques--however, we also highlight the essentially arbitrary nature of this decision. With the current, rapid pace of electronic publications, it becomes imperative for standardization of such basic techniques so that interlaboratory results may be easily compared and interpreted.
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Affiliation(s)
- Michelle A Scott
- Orthodontics and Dentofacial Orthopedics, College of Dental Medicine, University of Southern Nevada, Henderson, Nevada, USA
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