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Zhang Y, Guo T, Li Q, Qin J, Ding X, Ye S, Zhao J, Zhou Y. Novel ultrafine-grained β-type Ti-28Nb-2Zr-8Sn alloy for biomedical applications. J Biomed Mater Res A 2019; 107:1628-1639. [PMID: 30916874 DOI: 10.1002/jbm.a.36679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/18/2019] [Accepted: 03/15/2019] [Indexed: 12/23/2022]
Abstract
Titanium alloys are widely accepted as orthopedic or dental implant materials in the medical field. It is important to evaluate the biocompatibility of an implant material prior to use. A new β-type ultrafine-grained Ti-28Nb-2Zr-8Sn (TNZS) alloy with low Young's modulus of 31.6 GPa was fabricated. This study aims to evaluate the biocompatibility of TNZS alloy. In this study, we examined the microstructure, chemical composition and surface wettability of the TNZS alloy. The mouse embryonic osteoblast MC3T3-E1 cells and human umbilical vein endothelial cells (HUVECs) were cultured to study the cytocompatibility of TNZS alloy. Also, we evaluated the proinflammatory response of TNZS alloy in vitro and in vivo. The results show that the TNZS did not cause cytotoxicity, genotoxicity to MC3T3-E1 cells and HUVECs. Whereas, the TNZS alloy could significantly promote the cell proliferation, cell spreading and cell adhesion of MC3T3-E1 cells and HUVECs, as well as facilitate the osteogenic differentiation of MC3T3-E1 cells. Moreover, the TNZS alloy did not induce any remarkable proinflammatory response in vitro and in vivo. Thus, the novel TNZS alloy with an elasticity closer to that of human bone is biologically safe and could be a potential candidate for biomedical implant application. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 1628-1639, 2019.
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Affiliation(s)
- Yidi Zhang
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Tianqi Guo
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Qiushi Li
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China.,Department of VIP, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Jie Qin
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Xinxin Ding
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Shan Ye
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Jinghui Zhao
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Yanmin Zhou
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
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52
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Lih E, Park W, Park KW, Chun SY, Kim H, Joung YK, Kwon TG, Hubbell JA, Han DK. A Bioinspired Scaffold with Anti-Inflammatory Magnesium Hydroxide and Decellularized Extracellular Matrix for Renal Tissue Regeneration. ACS CENTRAL SCIENCE 2019; 5:458-467. [PMID: 30937373 PMCID: PMC6439446 DOI: 10.1021/acscentsci.8b00812] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Indexed: 05/23/2023]
Abstract
Kidney diseases are a worldwide public health issue. Renal tissue regeneration using functional scaffolds with biomaterials has attracted a great deal of attention due to limited donor organ availability. Here, we developed a bioinspired scaffold that can efficiently induce renal tissue regeneration. The bioinspired scaffold was designed with poly(lactide-co-glycolide) (PLGA), magnesium hydroxide (Mg(OH)2), and decellularized renal extracellular matrix (ECM). The Mg(OH)2 inhibited materials-induced inflammatory reactions by neutralizing the acidic microenvironment formed by degradation products of PLGA, and the acellular ECM helped restore the biological function of kidney tissues. When the PLGA/ECM/Mg(OH)2 scaffold was implanted in a partially nephrectomized mouse model, it led to the regeneration of renal glomerular tissue with a low inflammatory response. Finally, the PLGA/ECM/Mg(OH)2 scaffold was able to restore renal function more effectively than the control groups. These results suggest that the bioinspired scaffold can be used as an advanced scaffold platform for renal disease treatment.
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Affiliation(s)
- Eugene Lih
- Center
for Biomaterials, Korea Institute of Science
and Technology, Seoul 02792, Republic of Korea
| | - Wooram Park
- Department
of Biomedical Science, College of Life Sciences, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, Gyeonggi 13488, Republic of Korea
| | - Ki Wan Park
- Center
for Biomaterials, Korea Institute of Science
and Technology, Seoul 02792, Republic of Korea
- Department
of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Republic of Korea
| | - So Young Chun
- BioMedical
Research Institute, Kyungpook National University
Hospital, Daegu 41944, Republic of Korea
| | - Hyuncheol Kim
- Department
of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Republic of Korea
| | - Yoon Ki Joung
- Center
for Biomaterials, Korea Institute of Science
and Technology, Seoul 02792, Republic of Korea
| | - Tae Gyun Kwon
- Department
of Urology, School of Medicine, Kyungpook
National University, Daegu 37224, Republic of Korea
| | - Jeffrey A. Hubbell
- Institute
for Molecular Engineering, University of
Chicago, Chicago, Illinois 60637, United States
| | - Dong Keun Han
- Department
of Biomedical Science, College of Life Sciences, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, Gyeonggi 13488, Republic of Korea
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53
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Minardi S, Guo M, Zhang X, Luo X. An elastin-based vasculogenic scaffold promotes marginal islet mass engraftment and function at an extrahepatic site. JOURNAL OF IMMUNOLOGY AND REGENERATIVE MEDICINE 2019; 3:1-12. [PMID: 31681866 PMCID: PMC6824601 DOI: 10.1016/j.regen.2018.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In islet transplantation, one of the major obstacles to optimal engraftment is the loss of islet natural vascularization and islet-specific extracellular matrix (ECM) during the islet isolation process. Thus, transplanted islets must re-establish nutritional and physical support through formation of new blood vessels and new ECM. To promote this critical process, we developed an elastin-based vasculogenic and ECM-promoting scaffold engineered for extrahepatic islet transplantation. The scaffold by design consisted of type I collagen (Coll) blended with 20wt% of elastin (E) shown to promote angiogenesis as well as de novo ECM deposition. The resulting "CollE" scaffolds h ad interconnected pores with a size distribution tailored to accommodate seeding of islets as well as growth of new blood vessels. In vitro, CollE scaffolds enabled prolonged culture of murine islets for up to one week while preserving their integrity, viability and function. In vivo, after only four weeks post-transplant of a marginal islet mass, CollE scaffolds demonstrated enhanced vascularization of the transplanted islets in the epididymal fat pad and promoted a prompt reversal of hyperglycemia in previously diabetic recipients. This outcome was comparable to that of kidney capsular (KC) islet transplantation, and superior to that of islets transplanted on the control collagen-only scaffolds (Coll). Crucial genes associated with angiogenesis (VEGFA, PDGFB, FGF1, and COL3A1) as well as de novo islet-specific matrix deposition (COL6A1, COL4A1, LAMA2 and FN1) were all significantly upregulated in islets on CollE scaffolds in comparison to those on Coll scaffolds. Finally, CollE scaffolds were also able to support human islet culture in vitro. In conclusion, CollE scaffolds have the potential to improve the clinical outcome of marginal islet transplantation at extrahepatic sites by promoting angiogenesis and islet-specific ECM deposition.
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Affiliation(s)
- Silvia Minardi
- Center for Kidney Research and Therapeutics, Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
- Division of Nephrology and Hypertension, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Michelle Guo
- Weinberg College of Arts and Sciences, Northwestern University, Chicago, IL, United States
| | - Xiaomin Zhang
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Xunrong Luo
- Center for Kidney Research and Therapeutics, Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
- Division of Nephrology and Hypertension, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
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54
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Cao G, Huang Y, Li K, Fan Y, Xie H, Li X. Small intestinal submucosa: superiority, limitations and solutions, and its potential to address bottlenecks in tissue repair. J Mater Chem B 2019; 7:5038-5055. [PMID: 31432871 DOI: 10.1039/c9tb00530g] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Small intestinal submucosa (SIS) has attracted much attention in tissue repair because it can provide plentiful bioactive factors and a biomimetic three-dimensional microenvironment to induce desired cellular functions.
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Affiliation(s)
- Guangxiu Cao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100083
- China
| | - Yan Huang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100083
- China
| | - Kun Li
- State Key Laboratory of Powder Metallurgy
- Central South University
- Changsha 410083
- China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100083
- China
| | - Huiqi Xie
- Laboratory of Stem Cell and Tissue Engineering
- State Key Laboratory of Biotherapy and Cancer Center
- West China Hospital
- Sichuan University and Collaborative Innovation Center of Biotherapy
- Chengdu 610041
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100083
- China
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55
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Bonartsev AP, Voinova VV, Bonartseva GA. Poly(3-hydroxybutyrate) and Human Microbiota (Review). APPL BIOCHEM MICRO+ 2018. [DOI: 10.1134/s0003683818060066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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56
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Regeneration of different types of tissues depends on the interplay of stem cells-laden constructs and microenvironments in vivo. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:938-948. [PMID: 30423782 DOI: 10.1016/j.msec.2018.10.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 09/23/2018] [Accepted: 10/07/2018] [Indexed: 01/14/2023]
Abstract
The ability of repair and regeneration of tissues or organs has been significantly improved by using biomaterials-based constructs. Our previous studies found the regeneration of both articular cartilage and subchondral bone by implantation of a poly(lactide-co-glycolide) (PLGA)/fibrin gel/bone marrow stem cells (BMSCs)/(lipofectamine/pDNA-transforming growth factor (TGF)-β1) construct in vivo, without the step of pre-induced differentiation of the laden stem cells in vitro. To substantiate the ability to regenerate multi-types of tissues by the same constructs, in this study the constructs were implanted into three types of tissues or tissue defects in vivo, including subcutaneous fascia layer, and ear cartilage and eyelid tarsal plate defects. The ear cartilage and eyelid tarsal plate defects were fully regenerated 8 w post-implantation, showing a similar morphology to the corresponding native tissues. In the neo ear cartilage, abundant chondrocytes with obvious lacunas and cartilage-specific extracellular matrices (ECMs) were found. Neo eyelid tarsal plate with mature meibomian gland acinar units was regenerated. Furthermore, expressions of the ECMs-specific genes and proteins, as well as the cell behavior modulatory factors, Sry related HMG box 9 (Sox9) and TGF-β1 were significantly up-regulated in the regenerated ear cartilages and eyelid tarsal plate than those in the subcutaneously implanted constructs, which were filled with fibrocytes, inflammatory cells, obvious vascularization and slight ECMs deposition. These results confirm firmly the ability to regenerate multi-types of tissues by a stem cells-laden construct via adapting to the microenvironments of corresponding tissues.
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57
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Effective sustained release of 5-FU-loaded PLGA implant for improving therapeutic index of 5-FU in colon tumor. Int J Pharm 2018; 550:380-387. [DOI: 10.1016/j.ijpharm.2018.07.045] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 07/04/2018] [Accepted: 07/20/2018] [Indexed: 02/06/2023]
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58
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Reis KP, Sperling LE, Teixeira C, Paim Á, Alcântara B, Vizcay-Barrena G, Fleck RA, Pranke P. Application of PLGA/FGF-2 coaxial microfibers in spinal cord tissue engineering: an in vitro and in vivo investigation. Regen Med 2018; 13:785-801. [DOI: 10.2217/rme-2018-0060] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Aim: Scaffolds are a promising approach for spinal cord injury (SCI) treatment. FGF-2 is involved in tissue repair but is easily degradable and presents collateral effects in systemic administration. In order to address the stability issue and avoid the systemic effects, FGF-2 was encapsulated into core–shell microfibers by coaxial electrospinning and its in vitro and in vivo potential were studied. Materials & methods: The fibers were characterized by physicochemical and biological parameters. The scaffolds were implanted in a hemisection SCI rat model. Locomotor test was performed weekly for 6 weeks. After this time, histological analyses were performed and expression of nestin and GFAP was quantified by flow cytometry. Results: Electrospinning resulted in uniform microfibers with a core–shell structure, with a sustained liberation of FGF-2 from the fibers. The fibers supported PC12 cells adhesion and proliferation. Implanted scaffolds into SCI promoted locomotor recovery at 28 days after injury and reduced GFAP expression. Conclusion: These results indicate the potential of these microfibers in SCI tissue engineering. [Formula: see text]
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Affiliation(s)
- Karina P Reis
- Hematology & Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federale do Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
- Stem Cell Laboratory, Fundamental Health Science Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
- Post Graduate Program in Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Laura E Sperling
- Hematology & Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federale do Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
- Stem Cell Laboratory, Fundamental Health Science Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Cristian Teixeira
- Hematology & Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federale do Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
- Stem Cell Laboratory, Fundamental Health Science Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Ágata Paim
- Hematology & Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federale do Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
- Stem Cell Laboratory, Fundamental Health Science Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Bruno Alcântara
- Hematology & Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federale do Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
- Stem Cell Laboratory, Fundamental Health Science Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Gema Vizcay-Barrena
- Centre for Ultrastructural Imaging, King’s College London, London, WC2R 2LS, UK
| | - Roland A Fleck
- Centre for Ultrastructural Imaging, King’s College London, London, WC2R 2LS, UK
| | - Patricia Pranke
- Hematology & Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federale do Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
- Stem Cell Laboratory, Fundamental Health Science Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
- Post Graduate Program in Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
- Stem Cell Research Institute, Porto Alegre, RS, 90020-10, Brazil
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Perez JR, Kouroupis D, Li DJ, Best TM, Kaplan L, Correa D. Tissue Engineering and Cell-Based Therapies for Fractures and Bone Defects. Front Bioeng Biotechnol 2018; 6:105. [PMID: 30109228 PMCID: PMC6079270 DOI: 10.3389/fbioe.2018.00105] [Citation(s) in RCA: 207] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 07/09/2018] [Indexed: 12/25/2022] Open
Abstract
Bone fractures and segmental bone defects are a significant source of patient morbidity and place a staggering economic burden on the healthcare system. The annual cost of treating bone defects in the US has been estimated to be $5 billion, while enormous costs are spent on bone grafts for bone injuries, tumors, and other pathologies associated with defective fracture healing. Autologous bone grafts represent the gold standard for the treatment of bone defects. However, they are associated with variable clinical outcomes, postsurgical morbidity, especially at the donor site, and increased surgical costs. In an effort to circumvent these limitations, tissue engineering and cell-based therapies have been proposed as alternatives to induce and promote bone repair. This review focuses on the recent advances in bone tissue engineering (BTE), specifically looking at its role in treating delayed fracture healing (non-unions) and the resulting segmental bone defects. Herein we discuss: (1) the processes of endochondral and intramembranous bone formation; (2) the role of stem cells, looking specifically at mesenchymal (MSC), embryonic (ESC), and induced pluripotent (iPSC) stem cells as viable building blocks to engineer bone implants; (3) the biomaterials used to direct tissue growth, with a focus on ceramic, biodegradable polymers, and composite materials; (4) the growth factors and molecular signals used to induce differentiation of stem cells into the osteoblastic lineage, which ultimately leads to active bone formation; and (5) the mechanical stimulation protocols used to maintain the integrity of the bone repair and their role in successful cell engraftment. Finally, a couple clinical scenarios are presented (non-unions and avascular necrosis—AVN), to illustrate how novel cell-based therapy approaches can be used. A thorough understanding of tissue engineering and cell-based therapies may allow for better incorporation of these potential therapeutic approaches in bone defects allowing for proper bone repair and regeneration.
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Affiliation(s)
- Jose R Perez
- Department of Orthopedics, UHealth Sports Medicine Institute, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Dimitrios Kouroupis
- Department of Orthopedics, UHealth Sports Medicine Institute, Miller School of Medicine, University of Miami, Miami, FL, United States.,Diabetes Research Institute & Cell Transplant Center, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Deborah J Li
- Department of Orthopedics, UHealth Sports Medicine Institute, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Thomas M Best
- Department of Orthopedics, UHealth Sports Medicine Institute, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Lee Kaplan
- Department of Orthopedics, UHealth Sports Medicine Institute, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Diego Correa
- Department of Orthopedics, UHealth Sports Medicine Institute, Miller School of Medicine, University of Miami, Miami, FL, United States.,Diabetes Research Institute & Cell Transplant Center, Miller School of Medicine, University of Miami, Miami, FL, United States
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60
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Osteoinductive potential of small intestinal submucosa/ demineralized bone matrix as composite scaffolds for bone tissue engineering. ASIAN BIOMED 2018. [DOI: 10.2478/abm-2010-0119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Background: Demineralized bone matrix (DBM) is extensively used in orthopedic, periodontal, and maxillofacial application and investigated as a material to induce new bone formation. Small intestinal submucosa (SIS) derived from the submucosa layer of porcine intestine has widely utilized as biomaterial with minimum immune response. Objectives: Determine the osteoinductive potential of SIS, DBM, SIS/DBM composites in the in vitro cell culture and in vivo animal bioassays for bone tissue engineering. Materials and methods: Human periosteal (HPO) cells were treated in the absence or presence SIS, DBM, and SIS/DBM. Cell proliferation was examined by direct cell counting. Osteoblast differentiation of the HPO cells was analyzed with alkaline phosphatase activity assay. The Wistar rat muscle implant model was used to evaluate the osteoinductive potential of SIS, DBM, and SIS/DBM composites. Results: HPO cells could differentiate along osteogenic lineage when treated with either DBM or SIS/DBM. SIS/ DBM had a tendency to promote more cellular proliferation and osteoblast differentiation than the other treatments. In Wistar rat bioassay, SIS showed no new bone formation and the implants were surrounded by fibrous tissues. DBM demonstrated new bone formation along the edge of old DBM particles. SIS/DBM composite exhibited high osteoinductivity, and the residual SIS/DBM was surrounded by osteoid-like matrix and newly formed bone. Conclusion: DBM and SIS/DBM composites could retain their osteoinductive capability. SIS/DBM scaffolds may provide an alternative approach for bone tissue engineering.
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61
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Khorramirouz R, Go JL, Noble C, Jana S, Maxson E, Lerman A, Young MD. A novel surgical technique for a rat subcutaneous implantation of a tissue engineered scaffold. Acta Histochem 2018. [PMID: 29519681 PMCID: PMC5914524 DOI: 10.1016/j.acthis.2018.02.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Objectives Subcutaneous implantations in small animal models are currently required for preclinical studies of acellular tissue to evaluate biocompatibility, including host recellularization and immunogenic reactivity. Methods Three rat subcutaneous implantation methods were evaluated in six Sprague Dawley rats. An acellular xenograft made from porcine pericardium was used as the tissue-scaffold. Three implantation methods were performed; 1) Suture method is where a tissue-scaffold was implanted by suturing its border to the external oblique muscle, 2) Control method is where a tissue-scaffold was implanted without any suturing or support, 3) Frame method is where a tissue-scaffold was attached to a circular frame composed of polycaprolactone (PCL) biomaterial and placed subcutaneously. After 1 and 4 weeks, tissue-scaffolds were explanted and evaluated by hematoxylin and eosin (H&E), Masson’s trichrome, Picrosirius Red, transmission electron microscopy (TEM), immunohistochemistry, and mechanical testing. Results Macroscopically, tissue-scaffold degradation with the suture method and tissue-scaffold folding with the control method were observed after 4 weeks. In comparison, the frame method demonstrated intact tissue scaffolds after 4 weeks. H&E staining showed progressive cell repopulation over the course of the experiment in all groups with acute and chronic inflammation observed in suture and control methods throughout the duration of the study. Immunohistochemistry quantification of CD3, CD 31, CD 34, CD 163, and αSMA showed a statistically significant differences between the suture, control and frame methods (P < 0.05) at both time points. The average tensile strength was 4.03 ± 0.49, 7.45 ± 0.49 and 5.72 ± 1.34 (MPa) after 1 week and 0.55 ± 0.26, 0.12 ± 0.03 and 0.41 ± 0.32 (MPa) after 4 weeks in the suture, control, and frame methods; respectively. TEM analysis showed an increase in inflammatory cells in both suture and control methods following implantation. Conclusion Rat subcutaneous implantation with the frame method was performed with success and ease. The surgical approach used for the frame technique was found to be the best methodology for in vivo evaluation of tissue engineered acellular scaffolds, where the frame method did not compromise mechanical strength, but it reduced inflammation significantly.
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62
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Xiang P, Wang SS, He M, Han YH, Zhou ZH, Chen DL, Li M, Ma LQ. The in vitro and in vivo biocompatibility evaluation of electrospun recombinant spider silk protein/PCL/gelatin for small caliber vascular tissue engineering scaffolds. Colloids Surf B Biointerfaces 2018; 163:19-28. [DOI: 10.1016/j.colsurfb.2017.12.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 11/25/2017] [Accepted: 12/11/2017] [Indexed: 01/29/2023]
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63
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Tang R, Wang X, Zhang H, Liang X, Feng X, Zhu X, Lu X, Wu F, Liu Z. Promoting early neovascularization of SIS-repaired abdominal wall by controlled release of bioactive VEGF. RSC Adv 2018; 8:4548-4560. [PMID: 35539528 PMCID: PMC9077786 DOI: 10.1039/c7ra11954b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/06/2018] [Indexed: 11/21/2022] Open
Abstract
Insufficient early neovascularization post-operation is thought to be the main reason of surgical recurrence of porcine small intestinal submucosa (SIS)-repaired abdominal wall defects.
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Affiliation(s)
- Rui Tang
- Department of Hernia and Abdominal Wall Surgery
- Shanghai East Hospital
- TongJi University
- Shanghai 200120
- PR China
| | - Xin Wang
- Department of Vascular Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200001
- PR China
| | - Hanying Zhang
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- PR China
| | - Xi Liang
- Department of Thoracic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200001
- PR China
| | - Xueyi Feng
- Department of General Surgery
- Lu'an People's Hospital
- Lu'an Affiliated Hospital of Anhui Medical University
- Lu'an
- PR China
| | - Xiaoqiang Zhu
- Department of Hernia and Abdominal Wall Surgery
- Shanghai East Hospital
- TongJi University
- Shanghai 200120
- PR China
| | - Xinwu Lu
- Department of Vascular Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200001
- PR China
| | - Fei Wu
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- PR China
| | - Zhengni Liu
- Department of Hernia and Abdominal Wall Surgery
- Shanghai East Hospital
- TongJi University
- Shanghai 200120
- PR China
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Zamecnik CR, Lowe MM, Patterson DM, Rosenblum MD, Desai TA. Injectable Polymeric Cytokine-Binding Nanowires Are Effective Tissue-Specific Immunomodulators. ACS NANO 2017; 11:11433-11440. [PMID: 29124929 PMCID: PMC5709211 DOI: 10.1021/acsnano.7b06094] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Injectable nanomaterials that interact with the host immune system without surgical intervention present spatially anchored complements to cell transplantation and could offer improved pharmacokinetics compared to systemic cytokine therapy. Here we demonstrate fabrication of high aspect ratio polycaprolactone nanowires coupled with cytokine-binding antibodies that assemble into porous matrices when injected into the subcutaneous space. These structures are fabricated using a nanotemplating technique that allows for tunability of particle dimensions and utilize a straightforward maleimide conjugation chemistry to allow site-specific coupling to proteins. Nanowires are well tolerated in vivo and incite minimal inflammatory infiltrate. Nanowires conjugated with antibodies were designed to capture and potentiate endogenous interleukin-2 (IL-2), an important leukocyte activating cytokine. Together these nanowire-antibody matrices were capable of localizing endogenous IL-2 in the skin and activated targeted specific natural killer and T cell subsets, demonstrating both tissue- and cell-specific immune activation. These self-assembling nanowire matrices show promise as scaffolds to present engineered, local receptor-ligand interactions for cytokine-mediated disease.
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Affiliation(s)
- Colin R. Zamecnik
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California 94158, United States
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California San Francisco, Mission Bay Campus, San Francisco, California 94158, United States
| | - Margaret M. Lowe
- Department of Dermatology, University of California San Francisco, San Francisco, California 94143, United States
| | - David M. Patterson
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94143, United States
| | - Michael D. Rosenblum
- Department of Dermatology, University of California San Francisco, San Francisco, California 94143, United States
| | - Tejal A. Desai
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California 94158, United States
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65
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Wang L, Wang W, Liao J, Wang F, Jiang J, Cao C, Li S. Novel bilayer wound dressing composed of SIS membrane with SIS cryogel enhanced wound healing process. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 85:162-169. [PMID: 29407144 DOI: 10.1016/j.msec.2017.11.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/13/2017] [Accepted: 11/21/2017] [Indexed: 10/18/2022]
Abstract
Full-thickness skin damage is a server issue and sometimes even dangerous to life. Many researches have been done toward full-thickness wound dressing. In this study, we demonstrated a facile and one-step procedure of SIS bilayer wound dressing. The top layer could protect the wound from bacterial infection and provide a moist environment suitable for wound healing, while the cryogel layer could promote cell proliferation. The SIS bilayer wound dressing has sufficient mechanical properties to protect wound from second damage and can maintain a moist environment for cell proliferation and migration at wound site. Bacterial permeation testing demonstrated that the bilayer scaffold had high efficiency in blocking bacteria at the wound site. In vivo tests and qRT-PCR results revealed that the bilayer group possessed a higher tendency toward keratinocyte proliferation and migration. The SIS bilayer has a high potential to use as full-thickness wound dressing.
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Affiliation(s)
- Liang Wang
- Department of Plastic and Aesthetic Surgery, Southwest Hospital of Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Wenping Wang
- Department of Plastic and Aesthetic Surgery, Southwest Hospital of Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Jiangui Liao
- Department of Plastic and Aesthetic Surgery, Southwest Hospital of Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Fan Wang
- Department of Plastic and Aesthetic Surgery, Southwest Hospital of Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Junzi Jiang
- Department of Plastic and Aesthetic Surgery, Southwest Hospital of Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Chuan Cao
- Department of Plastic and Aesthetic Surgery, Southwest Hospital of Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China.
| | - Shirong Li
- Department of Plastic and Aesthetic Surgery, Southwest Hospital of Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China.
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66
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Lotti F, Ranieri F, Vadalà G, Zollo L, Di Pino G. Invasive Intraneural Interfaces: Foreign Body Reaction Issues. Front Neurosci 2017; 11:497. [PMID: 28932181 PMCID: PMC5592213 DOI: 10.3389/fnins.2017.00497] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 08/23/2017] [Indexed: 12/20/2022] Open
Abstract
Intraneural interfaces are stimulation/registration devices designed to couple the peripheral nervous system (PNS) with the environment. Over the last years, their use has increased in a wide range of applications, such as the control of a new generation of neural-interfaced prostheses. At present, the success of this technology is limited by an electrical impedance increase, due to an inflammatory response called foreign body reaction (FBR), which leads to the formation of a fibrotic tissue around the interface, eventually causing an inefficient transduction of the electrical signal. Based on recent developments in biomaterials and inflammatory/fibrotic pathologies, we explore and select the biological solutions that might be adopted in the neural interfaces FBR context: modifications of the interface surface, such as organic and synthetic coatings; the use of specific drugs or molecular biology tools to target the microenvironment around the interface; the development of bio-engineered-scaffold to reduce immune response and promote interface-tissue integration. By linking what we believe are the major crucial steps of the FBR process with related solutions, we point out the main issues that future research has to focus on: biocompatibility without losing signal conduction properties, good reproducible in vitro/in vivo models, drugs exhaustion and undesired side effects. The underlined pros and cons of proposed solutions show clearly the importance of a better understanding of all the molecular and cellular pathways involved and the need of a multi-target action based on a bio-engineered combination approach.
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Affiliation(s)
- Fiorenza Lotti
- NeXT: Neurophysiology and Neuroengineering of Human-Technology Interaction Research Unit, Università Campus Bio-MedicoRome, Italy.,Research Unit of Orthopaedic and Trauma Surgery, Università Campus Bio-MedicoRome, Italy
| | - Federico Ranieri
- NeXT: Neurophysiology and Neuroengineering of Human-Technology Interaction Research Unit, Università Campus Bio-MedicoRome, Italy.,Fondazione Alberto Sordi-Research Institute for AgingRome, Italy.,Research Unit of Neurology, Neurophysiology and Neurobiology, Università Campus Bio-MedicoRome, Italy
| | - Gianluca Vadalà
- Research Unit of Orthopaedic and Trauma Surgery, Università Campus Bio-MedicoRome, Italy
| | - Loredana Zollo
- Research Unit of Biomedical Robotics and Biomicrosystems, Università Campus Bio-MedicoRome, Italy
| | - Giovanni Di Pino
- NeXT: Neurophysiology and Neuroengineering of Human-Technology Interaction Research Unit, Università Campus Bio-MedicoRome, Italy.,Research Unit of Neurology, Neurophysiology and Neurobiology, Università Campus Bio-MedicoRome, Italy
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67
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Auricular Tissue Engineering Using Osteogenic Differentiation of Adipose Stem Cells with Small Intestine Submucosa. Plast Reconstr Surg 2017; 140:297-305. [DOI: 10.1097/prs.0000000000003522] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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68
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Dou Y, Chen Y, Zhang X, Xu X, Chen Y, Guo J, Zhang D, Wang R, Li X, Zhang J. Non-proinflammatory and responsive nanoplatforms for targeted treatment of atherosclerosis. Biomaterials 2017; 143:93-108. [PMID: 28778000 DOI: 10.1016/j.biomaterials.2017.07.035] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/29/2017] [Accepted: 07/28/2017] [Indexed: 12/31/2022]
Abstract
Atherosclerosis is the leading cause of many fatal cardiovascular and cerebrovascular diseases. Whereas nanomedicines are promising for targeted therapy of atherosclerosis, great challenges remain in development of effective, safe, and translational nanotherapies for its treatment. Herein we hypothesize that non-proinflammatory nanomaterials sensitive to low pH or high reactive oxygen species (ROS) may serve as effective platforms for triggerable delivery of anti-atherosclerotic therapeutics in cellular and tissue microenvironments of inflammation. To demonstrate this hypothesis, an acid-labile material of acetalated β-cyclodextrin (β-CD) (Ac-bCD) and a ROS-sensitive β-CD material (Ox-bCD) were separately synthesized by chemical modification of β-CD, which were formed into responsive nanoparticles (NPs). Ac-bCD NP was rapidly hydrolyzed in mildly acidic buffers, while hydrolysis of Ox-bCD NP was selectively accelerated by H2O2. Using an anti-atherosclerotic drug rapamycin (RAP), we found stimuli-responsive release of therapeutic molecules from Ac-bCD and Ox-bCD nanotherapies. Compared with non-responsive poly(lactide-co-glycolide) (PLGA)-based NP, Ac-bCD and Ox-bCD NPs showed negligible inflammatory responses in vitro and in vivo. By endocytosis in cells and intracellularly releasing cargo molecules in macrophages, responsive nanotherapies effectively inhibited macrophage proliferation and suppressed foam cell formation. After intraperitoneal (i.p.) delivery in apolipoprotein E-deficient (ApoE-/-) mice, fluorescence imaging showed accumulation of NPs in atherosclerotic plaques. Flow cytometry analysis indicated that the lymphatic translocation mediated by neutrophils and monocytes/macrophages may contribute to atherosclerosis targeting of i.p. administered NPs, in addition to targeting via the leaky blood vessels. Correspondingly, i.p. treatment with different nanotherapies afforded desirable efficacies. Particularly, both pH and ROS-responsive nanomedicines more remarkably delayed progression of atherosclerosis and significantly enhanced stability of atheromatous lesions, in comparison to non-responsive PLGA nanotherapy. Furthermore, responsive nanovehicles displayed good safety performance after long-term administration in mice. Consequently, for the first time our findings demonstrated the therapeutic advantages of nanomedicines responsive to mildly acidic or abnormally high ROS microenvironments for the treatment of atherosclerosis.
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Affiliation(s)
- Yin Dou
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing 400038, China; Institute of Materia Medica, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Yue Chen
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Xiangjun Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing 400038, China; State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
| | - Xiaoqiu Xu
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Yidan Chen
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Jiawei Guo
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Dinglin Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing 400038, China; Department of Chemistry, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
| | - Xiaohui Li
- Institute of Materia Medica, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Jianxiang Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
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69
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Zhang C, Li M, Zhu J, Luo F, Zhao J. Enhanced bone repair induced by human adipose-derived stem cells on osteogenic extracellular matrix ornamented small intestinal submucosa. Regen Med 2017; 12:541-552. [PMID: 28718708 DOI: 10.2217/rme-2017-0024] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
AIM Our aim was to design an osteogenic extracellular matrix (ECM) coated bioscaffold and to apply it to critical bone defect repair with adipose-derived stem cells (ADSCs). MATERIALS & METHODS Morphology of scaffolds was scanned by scanning electron microscope. Cell adhesion, proliferation and osteogenic differentiation of ADSCs on ECM-small intestinal submucosa (SIS) were evaluated by immunofluorescences staining, cell counting kit-8 and real-time qPCR, respectively. A mouse calvarial defect model was used to assess effects on bone regeneration in vivo. RESULTS Abundant ECM was coated on SIS, which facilitated cell adhesion and proliferation of ADSCs. ECM-SIS induced osteogenic differentiation of ADSCs even without osteogenic inductive factors. Bone regeneration in vivo was enhanced by ECM-SIS + ADSCs via BMP/SMAD pathway. CONCLUSION This work suggested a biofabricated SIS scaffold coated with osteogenic ECM-facilitated bone regeneration with ADSCs synergistically.
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Affiliation(s)
- Chi Zhang
- Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China
| | - Mei Li
- Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China.,Ningbo Institute of Medical Sciences, Ningbo, Zhejiang 315020, People's Republic of China
| | - Jinjin Zhu
- Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China
| | - Fangmiao Luo
- Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China
| | - Jiyuan Zhao
- Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China
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70
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Weaver JD, Headen DM, Aquart J, Johnson CT, Shea LD, Shirwan H, García AJ. Vasculogenic hydrogel enhances islet survival, engraftment, and function in leading extrahepatic sites. SCIENCE ADVANCES 2017; 3:e1700184. [PMID: 28630926 PMCID: PMC5457148 DOI: 10.1126/sciadv.1700184] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 04/03/2017] [Indexed: 05/23/2023]
Abstract
Islet transplantation is a promising alternative therapy for insulin-dependent patients, with the potential to eliminate life-threatening hypoglycemic episodes and secondary complications of long-term diabetes. However, widespread application of this therapy has been limited by inadequate graft function and longevity, in part due to the loss of up to 60% of the graft in the hostile intrahepatic transplant site. We report a proteolytically degradable synthetic hydrogel, functionalized with vasculogenic factors for localized delivery, engineered to deliver islet grafts to extrahepatic transplant sites via in situ gelation under physiological conditions. Hydrogels induced differences in vascularization and innate immune responses among subcutaneous, small bowel mesentery, and epididymal fat pad transplant sites with improved vascularization and reduced inflammation at the epididymal fat pad site. This biomaterial-based strategy improved the survival, engraftment, and function of a single pancreatic donor islet mass graft compared to the current clinical intraportal delivery technique. This biomaterial strategy has the potential to improve clinical outcomes in islet autotransplantation after pancreatectomy and reduce the burden on donor organ availability by maximizing graft survival in clinical islet transplantation for type 1 diabetes patients.
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Affiliation(s)
- Jessica D. Weaver
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Devon M. Headen
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Jahizreal Aquart
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Christopher T. Johnson
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, Atlanta, GA, 30332, USA
| | - Lonnie D. Shea
- Department of Biomedical Engineering and Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Suite 03-2303, 250 East Superior Street, Chicago, IL 60611, USA
| | - Haval Shirwan
- Institute of Cellular Therapeutics, Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, KY, 40202, USA
- FasCure Therapeutics LLC, 300 East Market Street, Louisville, KY 40202, USA
| | - Andrés J. García
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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71
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Li M, Gu Q, Chen M, Zhang C, Chen S, Zhao J. Controlled delivery of icariin on small intestine submucosa for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:260-267. [DOI: 10.1016/j.msec.2016.10.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 08/26/2016] [Accepted: 10/13/2016] [Indexed: 02/07/2023]
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72
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Iyer NR, Wilems TS, Sakiyama-Elbert SE. Stem cells for spinal cord injury: Strategies to inform differentiation and transplantation. Biotechnol Bioeng 2017; 114:245-259. [PMID: 27531038 PMCID: PMC5642909 DOI: 10.1002/bit.26074] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 06/20/2016] [Accepted: 08/07/2016] [Indexed: 12/13/2022]
Abstract
The complex pathology of spinal cord injury (SCI), involving a cascade of secondary events and the formation of inhibitory barriers, hampers regeneration across the lesion site and often results in irreversible loss of motor function. The limited regenerative capacity of endogenous cells after SCI has led to a focus on the development of cell therapies that can confer both neuroprotective and neuroregenerative benefits. Stem cells have emerged as a candidate cell source because of their ability to self-renew and differentiate into a multitude of specialized cell types. While ethical and safety concerns impeded the use of stem cells in the past, advances in isolation and differentiation methods have largely mitigated these issues. A confluence of work in stem cell biology, genetics, and developmental neurobiology has informed the directed differentiation of specific spinal cell types. After transplantation, these stem cell-derived populations can replace lost cells, provide trophic support, remyelinate surviving axons, and form relay circuits that contribute to functional recovery. Further refinement of stem cell differentiation and transplantation methods, including combinatorial strategies that involve biomaterial scaffolds and drug delivery, is critical as stem cell-based treatments enter clinical trials. Biotechnol. Bioeng. 2017;114: 245-259. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Nisha R Iyer
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton St., Stop C0800 BME 3.314, Austin, Texas 78712
| | - Thomas S Wilems
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton St., Stop C0800 BME 3.314, Austin, Texas 78712
| | - Shelly E Sakiyama-Elbert
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton St., Stop C0800 BME 3.314, Austin, Texas 78712
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73
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Kim C, Shores L, Guo Q, Aly A, Jeon OH, Kim DH, Bernstein N, Bhattacharya R, Chae JJ, Yarema KJ, Elisseeff JH. Electrospun Microfiber Scaffolds with Anti-Inflammatory Tributanoylated N-Acetyl-d-Glucosamine Promote Cartilage Regeneration. Tissue Eng Part A 2017; 22:689-97. [PMID: 27019285 DOI: 10.1089/ten.tea.2015.0469] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Tissue-engineering strategies offer promising tools for repairing cartilage damage; however, these strategies suffer from limitations under pathological conditions. As a model disease for these types of nonideal systems, the inflammatory environment in an osteoarthritic (OA) joint limits the efficacy of engineered therapeutics by disrupting joint homeostasis and reducing its capacity for regeneration. In this work, we investigated a sugar-based drug candidate, a tributanoylated N-acetyl-d-glucosamine analogue, called 3,4,6-O-Bu3GlcNAc, that is known to reduce nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling in osteoarthritis. 3,4,6-O-Bu3GlcNAc not only inhibited NFκB signaling but also exerted chondrogenic and anti-inflammatory effects on chondrocytes isolated from patients with osteoarthritis. 3,4,6-O-Bu3GlcNAc also increased the expression of extracellular matrix proteins and induced cartilage tissue production in three-dimensional in vitro hydrogel culture systems. To translate these chondrogenic and anti-inflammatory properties to tissue regeneration in osteoarthritis, we implanted 3,4,6-O-Bu3GlcNAc-loaded poly(lactic-co-glycolic acid) microfiber scaffolds into rats. The drug-laden scaffolds were biocompatible, and when seeded with human OA chondrocytes, similarly promoted cartilage tissue formation. 3,4,6-O-Bu3GlcNAc combined with the appropriate structural environment could be a promising therapeutic approach for osteoarthritis.
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Affiliation(s)
- Chaekyu Kim
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Lucas Shores
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Qiongyu Guo
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Ahmed Aly
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Ok Hee Jeon
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Do Hun Kim
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Nicholas Bernstein
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Rahul Bhattacharya
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Jemin Jeremy Chae
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Kevin J Yarema
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Jennifer H Elisseeff
- Translational Tissue Engineering Center, Wilmer Eye Institute and the Department of Biomedical Engineering, Johns Hopkins University , Baltimore, Maryland
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74
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Masaeli E, Karamali F, Loghmani S, Eslaminejad MB, Nasr-Esfahani MH. Bio-engineered electrospun nanofibrous membranes using cartilage extracellular matrix particles. J Mater Chem B 2017; 5:765-776. [DOI: 10.1039/c6tb02015a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Functionalized nanofibrous scaffolds with decellularized ECM (DECM) particles can mimic the natural motifs of cartilage ECMs and enhance chondro-inductivity for tissue engineering applications.
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Affiliation(s)
- Elahe Masaeli
- Department of Cellular Biotechnology
- Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
| | - Fereshte Karamali
- Department of Cellular Biotechnology
- Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
| | - Shahriar Loghmani
- Department of Cellular Biotechnology
- Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
| | - Mohamadreza Baghaban Eslaminejad
- Department of Stem Cells and Developmental Biology
- Cell Science Research Center
- Royan Institute for Stem Cell Biology and Technology
- ACECR
- Tehran
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75
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Kim K, Park JH, Park SH, Lee HY, Kim JH, Kim MS. An Injectable, Click-Cross-Linked Small Intestinal Submucosa Drug Depot for the Treatment of Rheumatoid Arthritis. Adv Healthc Mater 2016; 5:3105-3117. [PMID: 27900853 DOI: 10.1002/adhm.201601040] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 10/26/2016] [Indexed: 01/08/2023]
Abstract
Here, a click-cross-linked small intestine submucosa (SIS) drug depot is described for the treatment of rheumatoid arthritis (RA). To the best of the knowledge, there have been no studies related to the intra-articular injection of methotrexate (Met)-loaded click-cross-linkable SIS (Met-loaded Cx-SIS) for RA treatment. As the key objective of this work, injectable formulations of tetrazine-modified SIS (TE-SIS) and transcyclooctene-modified SIS (TC-SIS) are employed as drug depots. Within a few seconds, the simple mixing of equal amounts of TE-SIS and TC-SIS suspensions forms a gelatinous click-cross-linked SIS (Cx-SIS) drug depot in vitro and in vivo. The formed Cx-SIS depot is maintained in the articular joint over an extended period, while SIS alone rapidly disappears. Injectable formulations of Met-loaded Cx-SIS and Met-loaded SIS are prepared and then injected into articular joints to form drug depots. Compared to animals treated with Met-loaded SIS, RA animals treated with Met-loaded Cx-SIS show effective RA repair, as well as extensive regeneration of chondrocytes and glycosaminoglycan deposits. Collectively, these results indicate that the Met-loaded Cx-SIS depot is successfully formed after intra-articular injection of click-cross-linkable SIS, and that this formulation induces long-lasting Met release and allows Met to act effectively in the articular joint, resulting in RA repair.
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Affiliation(s)
- Kyungsook Kim
- Department of Molecular Science and Technology; Ajou University; Suwon 443-759 Korea
| | - Ji Hoon Park
- Department of Molecular Science and Technology; Ajou University; Suwon 443-759 Korea
| | - Seung Hun Park
- Department of Molecular Science and Technology; Ajou University; Suwon 443-759 Korea
| | - Hye Yun Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-759 Korea
| | - Jae Ho Kim
- Department of Molecular Science and Technology; Ajou University; Suwon 443-759 Korea
| | - Moon Suk Kim
- Department of Molecular Science and Technology; Ajou University; Suwon 443-759 Korea
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76
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Mouthuy PA, Snelling SJ, Dakin SG, Milković L, Gašparović AČ, Carr AJ, Žarković N. Biocompatibility of implantable materials: An oxidative stress viewpoint. Biomaterials 2016; 109:55-68. [DOI: 10.1016/j.biomaterials.2016.09.010] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 09/06/2016] [Accepted: 09/13/2016] [Indexed: 12/13/2022]
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77
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Sun X, Qian Z, Luo L, Yuan Q, Guo X, Tao L, Wei Y, Wang X. Antibacterial Adhesion of Poly(methyl methacrylate) Modified by Borneol Acrylate. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28522-28528. [PMID: 27712052 DOI: 10.1021/acsami.6b10498] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Poly(methyl methacrylate) (PMMA) is a widely used biomaterial. But there is still a challenge facing its unwanted bacterial adhesion because the subsequent biofilm formation usually leads to failure of related implants. Herein, we present a borneol-modified PMMA based on a facile and effective stereochemical strategy, generating antibacterial copolymer named as P(MMA-co-BA). It was synthesized by free radical polymerization and studied with different ratio between methyl methacrylate (MMA) and borneol acrylate (BA) monomers. NMR, GPC, and EA, etc., were used to confirm their chemical features. Their films were challenged with Escherichia coli (Gram-negative) and Bacillus subtilis (Gram-positive), showing a BA content dependent antibacterial performance. The minimum effective dose should be 10%. Then in vivo subcutaneous implantations in mice demonstrated their biocompatibilities through routine histotomy and HE staining. Therefore, P(MMA-co-BA)s not only exhibited their unique antibacterial character but also suggested a potential for the safe usage of borneol-modified PMMA frame and devices for further implantation.
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Affiliation(s)
- Xueli Sun
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| | - Zhiyong Qian
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University , Beijing 100191, P. R. China
- Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences , Beijing 100850, P. R. China
| | - Lingqiong Luo
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| | - Qipeng Yuan
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| | - Ximin Guo
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University , Beijing 100191, P. R. China
- Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences , Beijing 100850, P. R. China
| | - Lei Tao
- Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
| | - Yen Wei
- Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
| | - Xing Wang
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology , Beijing 100029, P. R. China
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78
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Won JY, Park CY, Bae JH, Ahn G, Kim C, Lim DH, Cho DW, Yun WS, Shim JH, Huh JB. Evaluation of 3D printed PCL/PLGA/
β
-TCP versus collagen membranes for guided bone regeneration in a beagle implant model. Biomed Mater 2016; 11:055013. [DOI: 10.1088/1748-6041/11/5/055013] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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79
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Wilson K, Terlouw A, Roberts K, Wolchok JC. The characterization of decellularized human skeletal muscle as a blueprint for mimetic scaffolds. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:125. [PMID: 27324779 PMCID: PMC6260795 DOI: 10.1007/s10856-016-5735-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 05/28/2016] [Indexed: 05/08/2023]
Abstract
The use of decellularized skeletal muscle (DSM) as a cell substrate and scaffold for the repair of volumetric muscle loss injuries has shown therapeutic promise. The performance of DSM materials motivated our interest in exploring the chemical and physical properties of this promising material. We suggest that these properties could serve as a blueprint for the development of next generation engineered materials with DSM mimetic properties. In this study, whole human lower limb rectus femoris (n = 10) and upper limb supraspinatus muscle samples (n = 10) were collected from both male and female tissue donors. Skeletal muscle samples were decellularized and nine property values, capturing key compositional, architectural, and mechanical properties, were measured and statistically analyzed. Mean values for each property were determined across muscle types and sexes. Additionally, the influence of muscle type (upper vs lower limb) and donor sex (male vs female) on each of the DSM material properties was examined. The data suggests that DSM materials prepared from lower limb rectus femoris samples have an increased modulus and contain a higher collagen content then upper limb supraspinatus muscles. Specifically, lower limb rectus femoris DSM material modulus and collagen content was approximately twice that of lower limb supraspinatus DSM samples. While muscle type did show some influence on material properties, we did not find significant trends related to sex. The material properties reported herein may be used as a blueprint for the data-driven design of next generation engineered scaffolds with muscle mimetic properties, as well as inputs for computational and physical models of skeletal muscle.
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Affiliation(s)
- Klaire Wilson
- Department of Biomedical Engineering, College of Engineering, University of Arkansas, 125 Engineering Hall, Fayetteville, AR, 72701, USA
| | - Abby Terlouw
- Department of Biomedical Engineering, College of Engineering, University of Arkansas, 125 Engineering Hall, Fayetteville, AR, 72701, USA
| | - Kevin Roberts
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, USA
| | - Jeffrey C Wolchok
- Department of Biomedical Engineering, College of Engineering, University of Arkansas, 125 Engineering Hall, Fayetteville, AR, 72701, USA.
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80
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Modulevsky DJ, Cuerrier CM, Pelling AE. Biocompatibility of Subcutaneously Implanted Plant-Derived Cellulose Biomaterials. PLoS One 2016; 11:e0157894. [PMID: 27328066 PMCID: PMC4915699 DOI: 10.1371/journal.pone.0157894] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 06/07/2016] [Indexed: 12/22/2022] Open
Abstract
There is intense interest in developing novel biomaterials which support the invasion and proliferation of living cells for potential applications in tissue engineering and regenerative medicine. Decellularization of existing tissues have formed the basis of one major approach to producing 3D scaffolds for such purposes. In this study, we utilize the native hypanthium tissue of apples and a simple preparation methodology to create implantable cellulose scaffolds. To examine biocompatibility, scaffolds were subcutaneously implanted in wild-type, immunocompetent mice (males and females; 6-9 weeks old). Following the implantation, the scaffolds were resected at 1, 4 and 8 weeks and processed for histological analysis (H&E, Masson's Trichrome, anti-CD31 and anti-CD45 antibodies). Histological analysis revealed a characteristic foreign body response to the scaffold 1 week post-implantation. However, the immune response was observed to gradually disappear by 8 weeks post-implantation. By 8 weeks, there was no immune response in the surrounding dermis tissue and active fibroblast migration within the cellulose scaffold was observed. This was concomitant with the deposition of a new collagen extracellular matrix. Furthermore, active blood vessel formation within the scaffold was observed throughout the period of study indicating the pro-angiogenic properties of the native scaffolds. Finally, while the scaffolds retain much of their original shape they do undergo a slow deformation over the 8-week length of the study. Taken together, our results demonstrate that native cellulose scaffolds are biocompatible and exhibit promising potential as a surgical biomaterial.
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Affiliation(s)
- Daniel J. Modulevsky
- Centre for Interdisciplinary NanoPhysics, University of Ottawa, Ottawa, Ontario, Canada
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Charles M. Cuerrier
- Centre for Interdisciplinary NanoPhysics, University of Ottawa, Ottawa, Ontario, Canada
- Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
| | - Andrew E. Pelling
- Centre for Interdisciplinary NanoPhysics, University of Ottawa, Ottawa, Ontario, Canada
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
- Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
- Institute for Science, Society and Policy, University of Ottawa, Ottawa, Ontario, Canada
- SymbioticA, School of Anatomy, Physiology and Human Biology, University of Western Australia, Perth WA 6009, Australia
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81
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Evaluation of the Therapeutic Potential In vitro and In vivo of the SIS/PLGA Scaffolds for Costal Cartilage Regeneration. Macromol Res 2016. [DOI: 10.1007/s13233-016-4065-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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82
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Santos TC, Reis RL, Marques AP. Can host reaction animal models be used to predict and modulate skin regeneration? J Tissue Eng Regen Med 2016. [DOI: 10.1002/term.2128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- T. C. Santos
- 3Bs Research Group - Biomaterials, Biodegradables and Biomimetics; University of Minho, Taipas, and ICVS-3Bs - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - R. L. Reis
- 3Bs Research Group - Biomaterials, Biodegradables and Biomimetics; University of Minho, Taipas, and ICVS-3Bs - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - A. P. Marques
- 3Bs Research Group - Biomaterials, Biodegradables and Biomimetics; University of Minho, Taipas, and ICVS-3Bs - PT Government Associate Laboratory; Braga/Guimarães Portugal
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83
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Wang YL, Gu XM, Kong Y, Feng QL, Yang YM. Electrospun and woven silk fibroin/poly(lactic-co-glycolic acid) nerve guidance conduits for repairing peripheral nerve injury. Neural Regen Res 2015; 10:1635-42. [PMID: 26692862 PMCID: PMC4660758 DOI: 10.4103/1673-5374.167763] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
We have designed a novel nerve guidance conduit (NGC) made from silk fibroin and poly(lactic-co-glycolic acid) through electrospinning and weaving (ESP-NGCs). Several physical and biological properties of the ESP-NGCs were assessed in order to evaluate their biocompatibility. The physical properties, including thickness, tensile stiffness, infrared spectroscopy, porosity, and water absorption were determined in vitro. To assess the biological properties, Schwann cells were cultured in ESP-NGC extracts and were assessed by morphological observation, the MTT assay, and immunohistochemistry. In addition, ESP-NGCs were subcutaneously implanted in the backs of rabbits to evaluate their biocompatibility in vivo. The results showed that ESP-NGCs have high porosity, strong hydrophilicity, and strong tensile stiffness. Schwann cells cultured in the ESP-NGC extract fluids showed no significant differences compared to control cells in their morphology or viability. Histological evaluation of the ESP-NGCs implanted in vivo indicated a mild inflammatory reaction and high biocompatibility. Together, these data suggest that these novel ESP-NGCs are biocompatible, and may thus provide a reliable scaffold for peripheral nerve repair in clinical application.
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Affiliation(s)
- Ya-Ling Wang
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China ; School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu Province, China
| | - Xiao-Mei Gu
- Jiangsu College of Engineering and Technology, Nantong, Jiangsu Province, China
| | - Yan Kong
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Qi-Lin Feng
- School of Medicine, Nantong University, Nantong, Jiangsu Province, China
| | - Yu-Min Yang
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, China ; Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
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84
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Wilems TS, Pardieck J, Iyer N, Sakiyama-Elbert SE. Combination therapy of stem cell derived neural progenitors and drug delivery of anti-inhibitory molecules for spinal cord injury. Acta Biomater 2015; 28:23-32. [PMID: 26384702 DOI: 10.1016/j.actbio.2015.09.018] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/28/2015] [Accepted: 09/15/2015] [Indexed: 12/31/2022]
Abstract
Regeneration of lost synaptic connections following spinal cord injury (SCI) is limited by local ischemia, cell death, and an excitotoxic environment, which leads to the development of an inhibitory glial scar surrounding a cystic cavity. While a variety of single therapy interventions provide incremental improvements to functional recovery after SCI, they are limited; a multifactorial approach that combines several single therapies may provide a better chance of overcoming the multitude of obstacles to recovery. To this end, fibrin scaffolds were modified to provide sustained delivery of neurotrophic factors and anti-inhibitory molecules, as well as encapsulation of embryonic stem cell-derived progenitor motor neurons (pMNs). In vitro characterization of this combination scaffold confirmed that pMN viability was unaffected by culture alongside sustained delivery systems. When transplanted into a rat sub-acute SCI model, fibrin scaffolds containing growth factors (GFs), anti-inhibitory molecules without pMNs, or pMNs with GFs had lower chondroitin sulfate proteoglycan levels compared to scaffolds containing anti-inhibitory molecules with pMNs. Scaffolds containing pMNs, but not anti-inhibitory molecules, showed survival, differentiation into neuronal cell types, axonal extension in the transplant area, and the ability to integrate into host tissue. However, the combination of pMNs with sustained-delivery of anti-inhibitory molecules led to reduced cell survival and increased macrophage infiltration. While combination therapies retain potential for effective treatment of SCI, further work is needed to improve cell survival and to limit inflammation. STATEMENT OF SIGNIFICANCE Spinal cord injury (SCI) creates a highly complex inhibitory environment with a multitude of obstacles that limit recovery. Many therapeutic options have been developed to overcome single obstacles, but single therapies typically only lead to limited functional improvement. Therefore combination therapies may improve recovery by targeting several inhibitory obstacles simultaneously. The present study used biomaterial scaffolds to combine the sustained release of anti-inhibitory molecules and growth factors with cell transplantation of highly purified progenitor motor neurons. This expands upon previously established biomaterial scaffolds by supporting surviving cells, limiting inhibition from the extracellular environment, and replenishing lost cell populations. We show that while promising, certain combinations may exacerbate negative side-effects instead of augmenting positive features.
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85
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Wilems TS, Sakiyama-Elbert SE. Sustained dual drug delivery of anti-inhibitory molecules for treatment of spinal cord injury. J Control Release 2015; 213:103-111. [PMID: 26122130 PMCID: PMC4691576 DOI: 10.1016/j.jconrel.2015.06.031] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 06/05/2015] [Accepted: 06/23/2015] [Indexed: 11/25/2022]
Abstract
Myelin-associated inhibitors (MAIs) and chondroitin sulfate proteoglycans (CSPGs) are major contributors to axon growth inhibition following spinal cord injury and limit functional recovery. The NEP1-40 peptide competitively binds the Nogo receptor and partially blocks inhibition from MAIs, while chondroitinase ABC (ChABC) enzymatically digests CSPGs, which are upregulated at the site of injury. In vitro studies showed that the combination of ChABC and NEP1-40 increased neurite extension compared to either treatment alone when dissociated embryonic dorsal root ganglia were seeded onto inhibitory substrates containing both MAIs and CSPGs. Furthermore, the ability to provide sustained delivery of biologically active ChABC and NEP1-40 from biomaterial scaffolds was achieved by loading ChABC into lipid microtubes and NEP1-40 into poly (lactic-co-glycolic acid) (PLGA) microspheres, obviating the need for invasive intrathecal pumps or catheters. Fibrin scaffolds embedded with the drug delivery systems (PLGA microspheres and lipid microtubes) were capable of releasing active ChABC for up to one week and active NEP1-40 for over two weeks in vitro. In addition, the loaded drug delivery systems in fibrin scaffolds decreased CSPG deposition and development of a glial scar, while also increasing axon growth after spinal cord injury in vivo. Therefore, the sustained, local delivery of ChABC and NEP1-40 within the injured spinal cord may block both myelin and CSPG-associated inhibition and allow for improved axon growth.
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Affiliation(s)
- Thomas S Wilems
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, United States
| | - Shelly E Sakiyama-Elbert
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, United States.
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86
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In vivo bioresponses to silk proteins. Biomaterials 2015; 71:145-157. [PMID: 26322725 DOI: 10.1016/j.biomaterials.2015.08.039] [Citation(s) in RCA: 286] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 08/15/2015] [Accepted: 08/18/2015] [Indexed: 12/22/2022]
Abstract
Silks are appealing materials for numerous biomedical applications involving drug delivery, tissue engineering, or implantable devices, because of their tunable mechanical properties and wide range of physical structures. In addition to the functionalities needed for specific clinical applications, a key factor necessary for clinical success for any implanted material is appropriate interactions with the body in vivo. This review summarizes our current understanding of the in vivo biological responses to silks, including degradation, the immune and inflammatory response, and tissue remodeling with particular attention to vascularization. While we focus in this review on silkworm silk fibroin protein due to the large quantity of in vivo data thanks to its widespread use in medical materials and consumer products, spider silk information is also included if available. Silk proteins are degraded in the body on a time course that is dependent on the method of silk fabrication and can range from hours to years. Silk protein typically induces a mild inflammatory response that decreases within a few weeks of implantation. The response involves recruitment and activation of macrophages and may include activation of a mild foreign body response with the formation of multinuclear giant cells, depending on the material format and location of implantation. The number of immune cells present decreases with time and granulation tissue, if formed, is replaced by endogenous, not fibrous, tissue. Importantly, silk materials have not been demonstrated to induce mineralization, except when used in calcified tissues. Due to its ability to be degraded, silk can be remodeled in the body allowing for vascularization and tissue ingrowth with eventual complete replacement by native tissue. The degree of remodeling, tissue ingrowth, or other specific cell behaviors can be modulated with addition of growth or other signaling factors. Silk can also be combined with numerous other materials including proteins, synthetic polymers, and ceramics to enhance its characteristics for a particular function. Overall, the diverse array of silk materials shows excellent bioresponses in vivo with low immunogenicity and the ability to be remodeled and replaced by native tissue making it suitable for numerous clinical applications.
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87
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Nie X, Xiao D, Wang W, Song Z, Yang Z, Chen Y, Gu Y. Comparison of Porcine Small Intestinal Submucosa versus Polypropylene in Open Inguinal Hernia Repair: A Systematic Review and Meta-Analysis. PLoS One 2015; 10:e0135073. [PMID: 26252895 PMCID: PMC4529205 DOI: 10.1371/journal.pone.0135073] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 07/17/2015] [Indexed: 01/28/2023] Open
Abstract
Background A systematic review and meta-analysis was performed in randomized controlled trials (RCTs) to compare porcine small intestinal submucosa (SIS) with polypropylene in open inguinal hernia repair. Method Electronic databases MEDLINE, Embase, and the Cochrane Library were used to compare patient outcomes for the two groups via meta-analysis. Result A total of 3 randomized controlled trials encompassing 200 patients were included in the meta-analysis. There was no significant difference in recurrence (P = 0.16), hematomas (P = 0.06), postoperative pain within 30 days (P = 0.45), or postoperative pain after 1 year (P = 0.12) between the 2 groups. The incidence of discomfort was significantly lower (P = 0.0006) in the SIS group. However, the SIS group experienced a significantly higher incidence of seroma (P = 0.03). Conclusions Compared to polypropylene, using SIS in open inguinal hernia repair is associated with a lower incidence of discomfort and a higher incidence of seroma. However, well-designed larger RCT studies with a longer follow-up period are needed to confirm these findings.
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Affiliation(s)
- Xin Nie
- Department of General Surgery, Shanghai Ninth Hospital affiliated to Shanghai JiaoTong University School of Medicine, and Hernia and Abdominal Wall Surgery Center of Shanghai JiaoTong University, Shanghai, China
| | - Dongdong Xiao
- Department of Urology Surgery, Shanghai Ninth Hospital affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Wenyue Wang
- Department of General Surgery, Shanghai Ninth Hospital affiliated to Shanghai JiaoTong University School of Medicine, and Hernia and Abdominal Wall Surgery Center of Shanghai JiaoTong University, Shanghai, China
| | - Zhicheng Song
- Department of General Surgery, Shanghai Ninth Hospital affiliated to Shanghai JiaoTong University School of Medicine, and Hernia and Abdominal Wall Surgery Center of Shanghai JiaoTong University, Shanghai, China
| | - Zhi Yang
- Department of General Surgery, Shanghai Ninth Hospital affiliated to Shanghai JiaoTong University School of Medicine, and Hernia and Abdominal Wall Surgery Center of Shanghai JiaoTong University, Shanghai, China
| | - Yuanwen Chen
- Department of General Surgery, Shanghai Ninth Hospital affiliated to Shanghai JiaoTong University School of Medicine, and Hernia and Abdominal Wall Surgery Center of Shanghai JiaoTong University, Shanghai, China
| | - Yan Gu
- Department of General Surgery, Shanghai Ninth Hospital affiliated to Shanghai JiaoTong University School of Medicine, and Hernia and Abdominal Wall Surgery Center of Shanghai JiaoTong University, Shanghai, China
- * E-mail:
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88
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You JO, Rafat M, Almeda D, Maldonado N, Guo P, Nabzdyk CS, Chun M, LoGerfo FW, Hutchinson JW, Pradhan-Nabzdyk LK, Auguste DT. pH-responsive scaffolds generate a pro-healing response. Biomaterials 2015; 57:22-32. [DOI: 10.1016/j.biomaterials.2015.04.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 04/02/2015] [Accepted: 04/03/2015] [Indexed: 10/23/2022]
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Gigliobianco G, Roman Regueros S, Osman NI, Bissoli J, Bullock AJ, Chapple CR, MacNeil S. Biomaterials for pelvic floor reconstructive surgery: how can we do better? BIOMED RESEARCH INTERNATIONAL 2015; 2015:968087. [PMID: 25977927 PMCID: PMC4419215 DOI: 10.1155/2015/968087] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 08/19/2014] [Indexed: 12/21/2022]
Abstract
Stress urinary incontinence (SUI) and pelvic organ prolapse (POP) are major health issues that detrimentally impact the quality of life of millions of women worldwide. Surgical repair is an effective and durable treatment for both conditions. Over the past two decades there has been a trend to enforce or reinforce repairs with synthetic and biological materials. The determinants of surgical outcome are many, encompassing the physical and mechanical properties of the material used, and individual immune responses, as well surgical and constitutional factors. Of the current biomaterials in use none represents an ideal. Biomaterials that induce limited inflammatory response followed by constructive remodelling appear to have more long term success than biomaterials that induce chronic inflammation, fibrosis and encapsulation. In this review we draw upon published animal and human studies to characterize the changes biomaterials undergo after implantation and the typical host responses, placing these in the context of clinical outcomes.
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Affiliation(s)
| | | | - Nadir I. Osman
- Material Science Engineering, University of Sheffield, Sheffield S1 3JD, UK
- Royal Hallamshire Hospital, Sheffield S10 2JF, UK
| | - Julio Bissoli
- Hospital das Clínicas da Faculdade de Medicina, Universidade de Sao Paulo, 05410-020 São Paulo, Brazil
| | - Anthony J. Bullock
- Material Science Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | | | - Sheila MacNeil
- Material Science Engineering, University of Sheffield, Sheffield S1 3JD, UK
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90
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Shim SW, Kwon DY, Lee BN, Kwon JS, Park JH, Lee JH, Kim JH, Lee IW, Shin JW, Lee HB, Kim WD, Kim MS. Evaluation of small intestine submucosa and poly(caprolactone-co-lactide) conduits for peripheral nerve regeneration. Tissue Eng Part A 2015; 21:1142-51. [PMID: 25435200 PMCID: PMC4356220 DOI: 10.1089/ten.tea.2014.0165] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 10/30/2014] [Indexed: 01/26/2023] Open
Abstract
The present study employed nerve guidance conduits (NGCs) only, which were made of small intestine submucosa (SIS) and poly(caprolactone-co-lactide) (PCLA) to promote nerve regeneration in a peripheral nerve injury (PNI) model with nerve defects of 15 mm. The SIS- and PCLA-NGCs were easily prepared by rolling of a SIS sheet and a bioplotter using PCLA, respectively. The prepared SIS- and PCLA-NGCs fulfilled the general requirement for use as artificial peripheral NGCs such as easy fabrication, reproducibility for mass production, suturability, sterilizability, wettability, and proper mechanical properties to resist collapsing when applied to in vivo implantation. The SIS- and PCLA-NGCs appeared to be well integrated into the host sciatic nerve without causing dislocations and serious inflammation. All NGCs stably maintained their NGC shape for 8 weeks without collapsing, which matched well with the nerve regeneration rate. Staining of the NGCs in the longitudinal direction showed that the regenerated nerves grew successfully from the SIS- and PCLA-NGCs through the sciatic nerve-injured gap and connected from the proximal to distal direction along the NGC axis. SIS-NGCs exhibited a higher nerve regeneration rate than PCLA-NGCs. Collectively, our results indicate that SIS- and PCLA-NGCs induced nerve regeneration in a PNI model, a finding that has significant implications in the future with regard to the feasibility of clinical nerve regeneration with SIS- and PCLA-NGCs prepared through an easy fabrication method using promising biomaterials.
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Affiliation(s)
- Sun Woo Shim
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Doo Yeon Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Bit Na Lee
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Jin Seon Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Ji Hoon Park
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Jun Hee Lee
- Nature-Inspired Mechanical System Team, Korea Institute of Machinery and Materials, Daejeon, Korea
| | - Jae Ho Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Il Woo Lee
- Department of Neurosurgery, Catholic University of Korea, Daejeon, Korea
| | - Jung-Woog Shin
- Department of Biomedical Engineering, Inje University, Gimhae, Korea
| | - Hai Bang Lee
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Wan-Doo Kim
- Nature-Inspired Mechanical System Team, Korea Institute of Machinery and Materials, Daejeon, Korea
| | - Moon Suk Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
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91
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Bhattacharjee P, Kundu B, Naskar D, Maiti TK, Bhattacharya D, Kundu SC. Nanofibrous nonmulberry silk/PVA scaffold for osteoinduction and osseointegration. Biopolymers 2015; 103:271-84. [DOI: 10.1002/bip.22594] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 11/17/2014] [Accepted: 11/18/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Promita Bhattacharjee
- Materials Science Centre; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | - Banani Kundu
- Department of Biotechnology; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | - Deboki Naskar
- Department of Biotechnology; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | - Tapas K. Maiti
- Department of Biotechnology; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | - Debasis Bhattacharya
- Materials Science Centre; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | - Subhas C. Kundu
- Department of Biotechnology; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
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Hurd SA, Bhatti NM, Walker AM, Kasukonis BM, Wolchok JC. Development of a biological scaffold engineered using the extracellular matrix secreted by skeletal muscle cells. Biomaterials 2015; 49:9-17. [PMID: 25725550 DOI: 10.1016/j.biomaterials.2015.01.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 12/17/2014] [Accepted: 01/20/2015] [Indexed: 01/08/2023]
Abstract
The performance of implantable biomaterials derived from decellularized tissue, including encouraging results with skeletal muscle, suggests that the extracellular matrix (ECM) derived from native tissue has promising regenerative potential. Yet, the supply of biomaterials derived from donated tissue will always be limited, which is why the in-vitro fabrication of ECM biomaterials that mimic the properties of tissue is an attractive alternative. Towards this end, our group has utilized a novel method to collect the ECM that skeletal muscle myoblasts secrete and form it into implantable scaffolds. The cell derived ECM contained several matrix constituents, including collagen and fibronectin that were also identified within skeletal muscle samples. The ECM was organized into a porous network that could be formed with the elongated and aligned architecture observed within muscle samples. The ECM material supported the attachment and in-vitro proliferation of cells, suggesting effectiveness for cell transplantation, and was well tolerated by the host when examined in-vivo. The results suggest that the ECM collection approach can be used to produce biomaterials with compositions and structures that are similar to muscle samples, and while the physical properties may not yet match muscle values, the in-vitro and in-vivo results indicate it may be a suitable first generation alternative to tissue derived biomaterials.
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Affiliation(s)
- Shiloh A Hurd
- Department of Biomedical Engineering, College of Engineering, University of Arkansas, USA
| | - Nadia M Bhatti
- Department of Biomedical Engineering, College of Engineering, University of Arkansas, USA
| | - Addison M Walker
- Department of Biomedical Engineering, College of Engineering, University of Arkansas, USA
| | - Ben M Kasukonis
- Department of Biomedical Engineering, College of Engineering, University of Arkansas, USA
| | - Jeffrey C Wolchok
- Department of Biomedical Engineering, College of Engineering, University of Arkansas, USA.
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93
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Leng X, Wei Z, Ren Y, Li Y, Wang Y, Wang Q. Facile synthesis and comparative study of poly(l-lactide) with linear-comb and star-comb architecture. RSC Adv 2015. [DOI: 10.1039/c5ra15141d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The crystallization ability of PLLA with different chain structures.
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Affiliation(s)
- Xuefei Leng
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Zhiyong Wei
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Yingying Ren
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Yang Li
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Yurong Wang
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Qinyi Wang
- State Key Laboratory of Fine Chemicals
- Department of Polymer Science and Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
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94
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Song JE, Kim AR, Lee CJ, Tripathy N, Yoon KH, Lee D, Khang G. Effects of purified alginate sponge on the regeneration of chondrocytes: in vitro and in vivo. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 26:181-95. [PMID: 25495827 DOI: 10.1080/09205063.2014.987570] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Regeneration science has been studied using tissue engineering techniques due to the self-renewal difficulties of damaged or degenerated cartilage. A scaffold with biodegradability and biocompatibility features plays a key role in developing cartilage tissue similar to human biological materials. Herein, we have fabricated three-dimensional sponge using purified alginate for the regeneration of chondrocytes cells and formation of cartilage. We demonstrated that the alginate purification can effectively minimize inflammatory reaction through reducing the content of mannuronic acid causing immune rejection. Cartilage regeneration research was performed using three-dimensional non-purified and purified alginate sponges synthesized by modified Korbutt method. In vitro cell viability and specific gene expression in the cartilage cells were investigated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and reverse transcriptase-polymerase chain reaction (RT-PCR) after seeding chondrocytes on the as-fabricated sponges. Specific extracellular matrix (ECM) of chondrocytes, sGAG, and the content of collagen were also measured. Histological staining was carried out after purified alginate sponge seeded with chondrocytes and was implanted in subcutaneous nude mouse followed by extraction. Compared to the non-purified ones, the purified alginate sponges showed positive effects on maintaining affinities and phenotype of chondrocytes. From these results, it can be suggested that the purified alginate sponges provide a promising platform for cartilage regeneration.
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Affiliation(s)
- Jeong Eun Song
- a Department of BIN Fusion Technology , Chonbuk National University , 567, Beackje-daero, Deokjin, Jeonju 561-756 , Republic of Korea
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95
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Li H, Koenig AM, Sloan P, Leipzig ND. In vivo assessment of guided neural stem cell differentiation in growth factor immobilized chitosan-based hydrogel scaffolds. Biomaterials 2014; 35:9049-57. [DOI: 10.1016/j.biomaterials.2014.07.038] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 07/21/2014] [Indexed: 01/01/2023]
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96
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Boffito M, Sirianni P, Di Rienzo AM, Chiono V. Thermosensitive block copolymer hydrogels based on poly(ɛ-caprolactone) and polyethylene glycol for biomedical applications: State of the art and future perspectives. J Biomed Mater Res A 2014; 103:1276-90. [DOI: 10.1002/jbm.a.35253] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 05/15/2014] [Accepted: 06/02/2014] [Indexed: 01/28/2023]
Affiliation(s)
- Monica Boffito
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Corso Duca degli Abruzzi 24 Turin Italy
| | - Paolo Sirianni
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Corso Duca degli Abruzzi 24 Turin Italy
| | - Anna Maria Di Rienzo
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Corso Duca degli Abruzzi 24 Turin Italy
| | - Valeria Chiono
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Corso Duca degli Abruzzi 24 Turin Italy
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97
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Lee GY, Kang SJ, Lee SJ, Song JE, Joo CK, Lee D, Khang G. Effects of small intestinal submucosa content on the adhesion and proliferation of retinal pigment epithelial cells on SIS-PLGA films. J Tissue Eng Regen Med 2014; 11:99-108. [DOI: 10.1002/term.1882] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 02/28/2013] [Accepted: 01/31/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Ga Young Lee
- Department of BIN Fusion Technology, Department of Polymer Nano Science and Technology and Polymer Fusion Research Centre; Chonbuk National University; Jeonju Korea
| | - Su Ji Kang
- Department of BIN Fusion Technology, Department of Polymer Nano Science and Technology and Polymer Fusion Research Centre; Chonbuk National University; Jeonju Korea
| | - So Jin Lee
- Department of BIN Fusion Technology, Department of Polymer Nano Science and Technology and Polymer Fusion Research Centre; Chonbuk National University; Jeonju Korea
| | - Jeong Eun Song
- Department of BIN Fusion Technology, Department of Polymer Nano Science and Technology and Polymer Fusion Research Centre; Chonbuk National University; Jeonju Korea
| | - Choun-Ki Joo
- Department of Ophthalmology and Visual Science, College of Medicine; Catholic University; Seoul Korea
| | - Dongwon Lee
- Department of BIN Fusion Technology, Department of Polymer Nano Science and Technology and Polymer Fusion Research Centre; Chonbuk National University; Jeonju Korea
| | - Gilson Khang
- Department of BIN Fusion Technology, Department of Polymer Nano Science and Technology and Polymer Fusion Research Centre; Chonbuk National University; Jeonju Korea
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98
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Almajhdi FN, Fouad H, Khalil KA, Awad HM, Mohamed SHS, Elsarnagawy T, Albarrag AM, Al-Jassir FF, Abdo HS. In-vitro anticancer and antimicrobial activities of PLGA/silver nanofiber composites prepared by electrospinning. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1045-1053. [PMID: 24375170 DOI: 10.1007/s10856-013-5131-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 12/23/2013] [Indexed: 06/03/2023]
Abstract
In the present work, a series of 0, 1 and 7 wt% silver nano-particles (Ag NPs) incorporated poly lactic-co-glycolic acid (PLGA) nano-fibers were synthesized by the electrospinning process. The PLGA/Ag nano-fibers sheets were characterized using SEM, TEM and DSC analyses. The three synthesized PLGA/silver nano-fiber composites were screened for anticancer activity against liver cancer cell line using MTT and LDH assays. The anticancer activity of PLGA nano-fibers showed a remarkable improvement due to increasing the concentration of the Ag NPs. In addition to the given result, PLGA nano-fibers did not show any cytotoxic effect. However, PLGA nano-fibers that contain 1 % nano silver showed anticancer activity of 8.8 %, through increasing the concentration of the nano silver to 7 % onto PLGA nano-fibers, the anticancer activity was enhanced to a 67.6 %. Furthermore, the antibacterial activities of these three nano-fibers, against the five bacteria strains namely; E.coli o157:H7 ATCC 51659, Staphylococcus aureus ATCC 13565, Bacillus cereus EMCC 1080, Listeria monocytogenes EMCC 1875 and Salmonella typhimurium ATCC25566 using the disc diffusion method, were evaluated. Sample with an enhanced inhibitory effect was PLGA/Ag NPs (7 %) which inhibited all strains (inhibition zone diameter 10 mm); PLGA/Ag NPs (1 %) sample inhibited only one strain (B. cereus) with zone diameter 8 mm. The PLGA nano-fiber sample has not shown any antimicrobial activity. Based on the anticancer as well as the antimicrobial results in this study, it can be postulated that: PLGA nanofibers containing 7 % nano silver are suitable as anticancer- and antibiotic-drug delivery systems, as they will increase the anticancer as well as the antibiotic drug potency without cytotoxicity effect on the normal cells. These findings also suggest that Ag NPs, of the size (5-10 nm) evaluated in the present study, are appropriate for therapeutic application from a safety standpoint.
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Affiliation(s)
- Fahad N Almajhdi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
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99
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Jang JE, Kim HM, Kim H, Jeon DY, Park CH, Kwon SY, Chung JW, Khang G. Inflammatory Responses to Hydroxyapatite/Poly(lactic-co-glycolic acid) Scaffolds with Variation of Compositions. POLYMER-KOREA 2014. [DOI: 10.7317/pk.2014.38.2.156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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100
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Ha HJ, Song JE, Kang Y, Kim EY, Yoon SJ, Yang YI, Lee D, Khang G. PORCINE SMALL INTESTINAL SUBMUCOSA REDUCES THE INFLAMMATORY REACTION OF POLY(LACTIDE-CO-GLYCOLIDE) FILMS. BIOMEDICAL ENGINEERING-APPLICATIONS BASIS COMMUNICATIONS 2014. [DOI: 10.4015/s101623721450032x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Poly(lactide-co-glycolide) (PLGA), a well-known synthetic polymer comprised of PLA and PGA, is used commonly as a scaffold for soft and hard tissue engineering purposes; however, the appropriate strategies for reducing its host tissue inflammatory response remain obscure. Porcine small intestinal submucosa (SIS) has been applied as a natural, biodegradable matrix for dressing materials, tendon graft substitutes and scaffolds. We hypothesized that the host tissue reaction of PLGA might occur but could be reduced by impregnating SIS into PLGA. We manufactured PLGA/SIS hybrid films with 0, 10, 20, 40 and 80 wt.% SIS of PLGA. The inflammatory potential of PLGA was evaluated using mRNA expression of TNF-α, IL-1β and IL-6 in the surrounding tissue of implanted scaffolds. The response of subcutaneously implanted PLGA/SIS films were compared to PLGA film; the local inflammatory response was observed by histology. PLGA/SIS films, especially PLGA/SIS films containing 20, 40 and 80 wt.% SIS, elicited a significantly lower expression of IL-1β, TNF-α and IL-6 than PLGA film. PLGA/SIS films demonstrated a favorable tissue response profile compared to PLGA film, with significant less inflammation and fibrous capsule formation as below only 20 wt.% of PLGA/SIS film during implantation. This study demonstrates reduced inflammatory response of PLGA by different amounts of SIS and PLGA/SIS scaffolds being used for tissue engineering constructs.
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Affiliation(s)
- Hyun Jung Ha
- Department of BIN Fusion Tech and Department of Advanced Organic Materials Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, 561–756, Korea
| | - Jeong Eun Song
- Department of BIN Fusion Tech and Department of Advanced Organic Materials Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, 561–756, Korea
| | - Yunmi Kang
- Department of BIN Fusion Tech and Department of Advanced Organic Materials Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, 561–756, Korea
| | - Eun Young Kim
- Department of BIN Fusion Tech and Department of Advanced Organic Materials Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, 561–756, Korea
| | - Sun Jung Yoon
- Department of Orthopedic Surgery, Chonbuk National University Hospital, Chonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, 561–756, Korea
| | - Young Il Yang
- Department of Pathology, School of Medicine, Inje University, Paik Inje Clinical Research, Pusan 614–735, Korea
| | - Dongwon Lee
- Department of BIN Fusion Tech and Department of Advanced Organic Materials Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, 561–756, Korea
| | - Gilson Khang
- Department of BIN Fusion Tech and Department of Advanced Organic Materials Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, 561–756, Korea
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