1
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Noh S, Jin YJ, Shin DI, Kwon HJ, Yun HW, Kim KM, Park JY, Chung JY, Park DY. Selective Extracellular Matrix Guided Mesenchymal Stem Cell Self-Aggregate Engineering for Replication of Meniscal Zonal Tissue Gradient in a Porcine Meniscectomy Model. Adv Healthc Mater 2023; 12:e2301180. [PMID: 37463568 DOI: 10.1002/adhm.202301180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/13/2023] [Accepted: 07/14/2023] [Indexed: 07/20/2023]
Abstract
Degenerative meniscus tears (DMTs) are prevalent findings in osteoarthritic knees, yet current treatment is mostly limited to arthroscopic partial meniscectomy rather than regeneration, which further exacerbates arthritic changes. Translational research regarding meniscus regeneration is hindered by the complex, composite nature of the meniscus which exhibit a gradient from inner cartilage-like tissue to outer fibrous tissue, as well as engineering hurdles often requiring growth factors and cross-linking agents. Here, a meniscus zonal tissue gradient is proposed using zone-specific decellularized meniscus extracellular matrix (DMECM) and autologous synovial mesenchymal stem cells (SMSC) via self-aggregation without the use of growth factors or cross-linking agents. Combination with zone-specific DMECM during self-aggregation of MSCs forms zone-specific meniscus tissue that reflects the respective DMECM harvest site. The implantation of these constructs leads to the regeneration of meniscus tissue resembling the native meniscus, demonstrating inner cartilaginous and outer fibrous characteristics as well as recovery of native meniscal microarchitecture in a porcine partial meniscectomy model at 6 months. In all, the findings offer a potential regenerative therapy for DMTs that may improve current partial meniscectomy-based patient care.
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Affiliation(s)
- Sujin Noh
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon, 16499, Republic of Korea
| | - Yong Jun Jin
- Department of Orthopedic Surgery, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea
| | - Dong Il Shin
- Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea
| | - Hyeon Jae Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea
| | - Hee-Woong Yun
- Department of Orthopedic Surgery, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea
- Cell Therapy Center, Ajou Medical Center, Suwon, 16499, Republic of Korea
| | - Kyu Min Kim
- Cell Therapy Center, Ajou Medical Center, Suwon, 16499, Republic of Korea
| | - Jae-Young Park
- Department of Orthopedics Surgery, CHA University Bundang Medical Center, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
| | - Jun Young Chung
- Department of Orthopedic Surgery, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea
| | - Do Young Park
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon, 16499, Republic of Korea
- Department of Orthopedic Surgery, School of Medicine, Ajou University, Suwon, 16499, Republic of Korea
- Cell Therapy Center, Ajou Medical Center, Suwon, 16499, Republic of Korea
- Ajou University, Leading Convergence of Healthcare and Medicine, Institute of Science & Technology (ALCHeMIST), Suwon, 16499, Republic of Korea
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2
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Jeyachandran D, Murshed M, Haglund L, Cerruti M. A Bioglass-Poly(lactic-co-glycolic Acid) Scaffold@Fibrin Hydrogel Construct to Support Endochondral Bone Formation. Adv Healthc Mater 2023; 12:e2300211. [PMID: 37462089 DOI: 10.1002/adhm.202300211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 06/21/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023]
Abstract
Bone tissue engineering using stem cells to build bone directly on a scaffold matrix often fails due to lack of oxygen at the injury site. This may be avoided by following the endochondral ossification route; herein, a cartilage template is promoted first, which can survive hypoxic environments, followed by its hypertrophy and ossification. However, hypertrophy is so far only achieved using biological factors. This work introduces a Bioglass-Poly(lactic-co-glycolic acid@fibrin (Bg-PLGA@fibrin) construct where a fibrin hydrogel infiltrates and encapsulates a porous Bg-PLGA. The hypothesis is that mesenchymal stem cells (MSCs) loaded in the fibrin gel and induced into chondrogenesis degrade the gel and become hypertrophic upon reaching the stiffer, bioactive Bg-PLGA core, without external induction factors. Results show that Bg-PLGA@fibrin induces hypertrophy, as well as matrix mineralization and osteogenesis; it also promotes a change in morphology of the MSCs at the gel/scaffold interface, possibly a sign of osteoblast-like differentiation of hypertrophic chondrocytes. Thus, the Bg-PLGA@fibrin construct can sequentially support the different phases of endochondral ossification purely based on material cues. This may facilitate clinical translation by decreasing in-vitro cell culture time pre-implantation and the complexity associated with the use of external induction factors.
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Affiliation(s)
| | - Monzur Murshed
- Faculty of Dentistry, Department of Medicine, and Shriners Hospital for Children, McGill University, Montreal, Quebec, H4A 0A9, Canada
| | - Lisbet Haglund
- Experimental Surgery, McGill University, Montreal, H3G 2M1, Canada
| | - Marta Cerruti
- Department of Mining and Materials Engineering, McGill University, Montreal, H3A 0C1, Canada
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3
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M Galindo J, San-Millán I, Castillo-Sarmiento CA, Ballesteros-Yáñez I, Herrero MA, Merino S, Vázquez E. Mimicking the extracellular matrix by incorporating functionalized graphene into hybrid hydrogels. NANOSCALE 2023; 15:14238-14248. [PMID: 37599610 DOI: 10.1039/d3nr02689b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
The efficient functionalization of graphene with sulfonic groups using a sustainable approach facilitates the interaction of biomolecules with its surface. The inclusion of these graphene sheets inside a photopolymerized acrylamide-based hydrogel provides a 3D scaffold with viscoelastic behaviour closer to that found in natural tissues. Cell-culture experiments and differentiation assays with SH-SY5Y cells showed that these hybrid hydrogels are non-cytotoxic, thus making them potentially useful as scaffold materials mimicking the extracellular environment.
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Affiliation(s)
- Josué M Galindo
- Instituto Regional de Investigación Científica Aplicada (IRICA) and Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.
| | - Irene San-Millán
- Instituto Regional de Investigación Científica Aplicada (IRICA) and Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.
| | | | | | - M Antonia Herrero
- Instituto Regional de Investigación Científica Aplicada (IRICA) and Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.
| | - Sonia Merino
- Instituto Regional de Investigación Científica Aplicada (IRICA) and Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.
| | - Ester Vázquez
- Instituto Regional de Investigación Científica Aplicada (IRICA) and Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.
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4
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Haq-Siddiqi NA, Britton D, Kim Montclare J. Protein-engineered biomaterials for cartilage therapeutics and repair. Adv Drug Deliv Rev 2023; 192:114647. [PMID: 36509172 DOI: 10.1016/j.addr.2022.114647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 10/17/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022]
Abstract
Cartilage degeneration and injury are major causes of pain and disability that effect millions, and yet treatment options for conditions like osteoarthritis (OA) continue to be mainly palliative or involve complete replacement of injured joints. Several biomaterial strategies have been explored to address cartilage repair either by the delivery of therapeutics or as support for tissue repair, however the complex structure of cartilage tissue, its mechanical needs, and lack of regenerative capacity have hindered this goal. Recent advances in synthetic biology have opened new possibilities for engineered proteins to address these unique needs. Engineered protein and peptide-based materials benefit from inherent biocompatibility and nearly unlimited tunability as they utilize the body's natural building blocks to fabricate a variety of supramolecular structures. The pathophysiology and needs of OA cartilage are presented here, along with an overview of the current state of the art and next steps for protein-engineered repair strategies for cartilage.
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Affiliation(s)
- Nada A Haq-Siddiqi
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, United States
| | - Dustin Britton
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, United States
| | - Jin Kim Montclare
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, United States; Department of Chemistry, New York University, New York 10003, United States; Department of Radiology, New York University Grossman School of Medicine, New York 10016, United States; Department of Biomaterials, NYU College of Dentistry, New York, NY 10010, United States; Department of Biomedical Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, United States.
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5
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Sun Z, Khlusov IA, Evdokimov KE, Konishchev ME, Kuzmin OS, Khaziakhmatova OG, Malashchenko VV, Litvinova LS, Rutkowski S, Frueh J, Kozelskaya AI, Tverdokhlebov SI. Nitrogen-doped titanium dioxide films fabricated via magnetron sputtering for vascular stent biocompatibility improvement. J Colloid Interface Sci 2022; 626:101-112. [DOI: 10.1016/j.jcis.2022.06.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 06/11/2022] [Accepted: 06/22/2022] [Indexed: 10/31/2022]
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6
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Li J, Shao J, Zeng Z, He Y, Tang C, Park SH, Lee JH, Liu R. Mechanosensitive turnover of phosphoribosyl pyrophosphate synthetases regulates nucleotide metabolism. Cell Death Differ 2022; 29:206-217. [PMID: 34465890 PMCID: PMC8738752 DOI: 10.1038/s41418-021-00851-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 02/07/2023] Open
Abstract
Cells coordinate their behaviors with the mechanical properties of the extracellular matrix (ECM). Tumor cells frequently harbor an enhanced nucleotide synthesis, presumably to meet the increased demands for rapid proliferation. Nevertheless, how ECM rigidity regulates nucleotide metabolism remains elusive. Here we show that shift from stiff to soft matrix blunts glycolysis-derived nucleotide synthesis in tumor cells. Soft ECM results in TNF receptor-associated factor 2 (TRAF2)-dependent K29 ubiquitination and degradation of phosphoribosyl pyrophosphate synthetase (PRPS)1/2. Recruitment of TRAF2 to PRPS1/2 requires phosphorylation of PRPS1 S285 or PRPS2 T285, which is mediated by low stiffness-activated large tumor suppressor (LATS)1/2 kinases. Further, non-phosphoryable or non-ubiquitinatable PRPS1/2 mutations maintain PRPS1/2 expression and nucleotide synthesis at low stiffness, and promote tumor growth and metastasis. Our findings demonstrate that PRPS1/2 stability and nucleotide metabolism is ECM rigidity-sensitive, and thereby highlight a regulatory cascade underlying mechanics-guided tumor metabolism reprogramming.
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Affiliation(s)
- Jingyi Li
- grid.464276.50000 0001 0381 3718The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, China ,grid.413856.d0000 0004 1799 3643School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, China
| | - Jichun Shao
- grid.464276.50000 0001 0381 3718The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, China
| | - Zhijun Zeng
- grid.464276.50000 0001 0381 3718The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, China
| | - Yumin He
- grid.13291.380000 0001 0807 1581State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Can Tang
- grid.413856.d0000 0004 1799 3643School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, China
| | - Su Hwan Park
- grid.255166.30000 0001 2218 7142Department of Health Sciences, The Graduate School of Dong-A University, Busan, Republic of Korea
| | - Jong-Ho Lee
- grid.255166.30000 0001 2218 7142Department of Health Sciences, The Graduate School of Dong-A University, Busan, Republic of Korea ,grid.255166.30000 0001 2218 7142Department of Biological Sciences, Dong-A University, Busan, Republic of Korea
| | - Rui Liu
- grid.13291.380000 0001 0807 1581State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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7
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Rana MM, De la Hoz Siegler H. Tuning the Properties of PNIPAm-Based Hydrogel Scaffolds for Cartilage Tissue Engineering. Polymers (Basel) 2021; 13:3154. [PMID: 34578055 PMCID: PMC8467289 DOI: 10.3390/polym13183154] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 01/15/2023] Open
Abstract
Poly(N-isopropylacrylamide) (PNIPAm) is a three-dimensional (3D) crosslinked polymer that can interact with human cells and play an important role in the development of tissue morphogenesis in both in vitro and in vivo conditions. PNIPAm-based scaffolds possess many desirable structural and physical properties required for tissue regeneration, but insufficient mechanical strength, biocompatibility, and biomimicry for tissue development remain obstacles for their application in tissue engineering. The structural integrity and physical properties of the hydrogels depend on the crosslinks formed between polymer chains during synthesis. A variety of design variables including crosslinker content, the combination of natural and synthetic polymers, and solvent type have been explored over the past decade to develop PNIPAm-based scaffolds with optimized properties suitable for tissue engineering applications. These design parameters have been implemented to provide hydrogel scaffolds with dynamic and spatially patterned cues that mimic the biological environment and guide the required cellular functions for cartilage tissue regeneration. The current advances on tuning the properties of PNIPAm-based scaffolds were searched for on Google Scholar, PubMed, and Web of Science. This review provides a comprehensive overview of the scaffolding properties of PNIPAm-based hydrogels and the effects of synthesis-solvent and crosslinking density on tuning these properties. Finally, the challenges and perspectives of considering these two design variables for developing PNIPAm-based scaffolds are outlined.
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Affiliation(s)
- Md Mohosin Rana
- Biomedical Engineering Graduate Program, Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada;
| | - Hector De la Hoz Siegler
- Biomedical Engineering Graduate Program, Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada;
- Department of Chemical and Petroleum Engineering, Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
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8
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Balu R, Dorishetty P, Mata JP, Hill AJ, Dutta NK, Choudhury NR. Tuning the Hierarchical Structure and Resilience of Resilin-like Polypeptide Hydrogels Using Graphene Oxide. ACS APPLIED BIO MATERIALS 2020; 3:8688-8697. [DOI: 10.1021/acsabm.0c01088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rajkamal Balu
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Pramod Dorishetty
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Jitendra P. Mata
- Australian Centre for Neutron Scattering (ACNS), Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, New South Wales 2232, Australia
| | - Anita J. Hill
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - Naba K. Dutta
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
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9
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Zhao Y, You Z, Xing D, Li JJ, Zhang Q, Huang H, Li Z, Jiang S, Wu Z, Zhang Y, Li W, Zhang L, Du Y, Lin J. Comparison of Chondrocytes in Knee Osteoarthritis and Regulation by Scaffold Pore Size and Stiffness. Tissue Eng Part A 2020; 27:223-236. [PMID: 32539550 DOI: 10.1089/ten.tea.2020.0085] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
In knee osteoarthritis (OA), there is more pronounced cartilage damage in the medial compartment ("lesion zone") than the lateral compartment ("remote zone"). This study fills a gap in the literature by conducting a systematic comparison of cartilage and chondrocyte characteristics from these two zones. It also investigates whether chondrocytes from the different zones respond distinctly to changes in the physical and mechanical microenvironment using three-dimensional porous scaffolds by changing stiffness and pore size. Cartilage was harvested from patients with end-stage varus knee OA. Cartilage from the lesion and remote zones were compared through histological and biomechanical assessments, and through proteomic and gene transcription analyses of chondrocytes. Gelatin scaffolds with varied pore sizes and stiffness were used to investigate in vitro microenvironmental regulation of chondrocytes from the two zones. Cartilage from the lesion and remote zones differed significantly (p < 0.05) in histological and biomechanical characteristics, as well as phenotype, protein, and gene expression of chondrocytes. Chondrocytes from both zones were sensitive to changes in the structural and mechanical properties of gelatin scaffolds. Of interest, although all chondrocytes better retained chondrocyte phenotype in stiffer scaffolds, those from the lesion and remote zones, respectively, preferred scaffolds with larger and smaller pores. Distinct variations exist in cartilage and chondrocyte characteristics in the lesion and remote zones of knee OA. Cells in these two zones respond differently to variations in the physical and mechanical microenvironment. Understanding and manipulating these differences will facilitate the development of more efficient and precise diagnostic and therapeutic approaches for knee OA.
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Affiliation(s)
- Yu Zhao
- Arthritis Clinic and Research Center, Peking University People's Hospital, Peking University, Beijing, China.,Arthritis Institute, Peking University, Beijing, China
| | - Zhifeng You
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - Dan Xing
- Arthritis Clinic and Research Center, Peking University People's Hospital, Peking University, Beijing, China.,Arthritis Institute, Peking University, Beijing, China
| | - Jiao Jiao Li
- Kolling Institute, Faculty of Medicine and Health, University of Sydney, St. Leonards, Australia
| | - Qingxi Zhang
- Arthritis Clinic and Research Center, Peking University People's Hospital, Peking University, Beijing, China.,Arthritis Institute, Peking University, Beijing, China
| | - Hesuyuan Huang
- Arthritis Clinic and Research Center, Peking University People's Hospital, Peking University, Beijing, China.,Arthritis Institute, Peking University, Beijing, China
| | - Zhikun Li
- Arthritis Clinic and Research Center, Peking University People's Hospital, Peking University, Beijing, China.,Arthritis Institute, Peking University, Beijing, China
| | - Shumeng Jiang
- Department of Mechanical Engineering and Materials science, Washington University in St. Louis, St. Louis, USA
| | - Zhaozhao Wu
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - Yuying Zhang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - Wenjing Li
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - Lin Zhang
- MOE Key Laboratory of Bioinformatics, Center for Synthetic and Systems Biology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Yanan Du
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - Jianhao Lin
- Arthritis Clinic and Research Center, Peking University People's Hospital, Peking University, Beijing, China.,Arthritis Institute, Peking University, Beijing, China
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10
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Steering cell behavior through mechanobiology in 3D: A regenerative medicine perspective. Biomaterials 2020; 268:120572. [PMID: 33285439 DOI: 10.1016/j.biomaterials.2020.120572] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 09/04/2020] [Accepted: 11/21/2020] [Indexed: 12/14/2022]
Abstract
Mechanobiology, translating mechanical signals into biological ones, greatly affects cellular behavior. Steering cellular behavior for cell-based regenerative medicine approaches requires a thorough understanding of the orchestrating molecular mechanisms, among which mechanotransducive ones are being more and more elucidated. Because of their wide use and highly mechanotransduction dependent differentiation, this review focuses on mesenchymal stromal cells (MSCs), while also briefly relating the discussed results to other cell types. While the mechanotransduction pathways are relatively well-studied in 2D, much remains unknown of the role and regulation of these pathways in 3D. Ultimately, cells need to be cultured in a 3D environment to create functional de novo tissue. In this review, we explore the literature on the roles of different material properties on cellular behavior and mechanobiology in 2D and 3D. For example, while stiffness plays a dominant role in 2D MSCs differentiation, it seems to be of subordinate importance in 3D MSCs differentiation, where matrix remodeling seems to be key. Also, the role and regulation of some of the main mechanotransduction players are discussed, focusing on MSCs. We have only just begun to fundamentally understand MSCs and other stem cells behavior in 3D and more fundamental research is required to advance biomaterials able to replicate the stem cell niche and control cell activity. This better understanding will contribute to smarter tissue engineering scaffold design and the advancement of regenerative medicine.
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11
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Lee HJ, Seo Y, Kim HS, Lee JW, Lee KY. Regulation of the Viscoelastic Properties of Hyaluronate-Alginate Hybrid Hydrogel as an Injectable for Chondrocyte Delivery. ACS OMEGA 2020; 5:15567-15575. [PMID: 32637832 PMCID: PMC7331060 DOI: 10.1021/acsomega.0c01763] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/03/2020] [Indexed: 06/11/2023]
Abstract
Modulation of the viscoelastic properties of hydrogels is critical in tissue engineering applications. In the present study, a hyaluronate-alginate hybrid (HAH) was synthesized by introducing alginate to the hyaluronate backbone with varying molecular weights (700-2500 kDa), and HAH hydrogels were prepared in the presence of calcium ions at the same cross-linking density. The storage shear moduli of the HAH hydrogels increased with the concomitant increase in the molecular weight of hyaluronate in the HAH polymer. The HAH hydrogels were also modified with arginine-glycine-aspartic acid (RGD) and histidine-alanine-valine (HAV) peptides to enhance cell-matrix and cell-cell interactions, respectively. The chondrogenic differentiation of ATDC5 cells encapsulated within the HAH hydrogels was enhanced with the increase in the storage shear moduli of the gels in vitro as well as in vivo. This approach of regulating the viscoelastic properties of hydrogels using polymers of varying molecular weights at the same cross-linking density may prove to be useful in various tissue engineering applications including cartilage regeneration.
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Affiliation(s)
- Hyun Ji Lee
- Department
of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Yerang Seo
- Department
of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Hyun Seung Kim
- Department
of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jae Won Lee
- Department
of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Kuen Yong Lee
- Department
of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
- Institute
of Nano Science and Technology, Hanyang
University, Seoul 04763, Republic of Korea
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12
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Seo Y, Lee H, Lee JW, Lee KY. Hyaluronate-alginate hybrid hydrogels prepared with various linkers for chondrocyte encapsulation. Carbohydr Polym 2019; 218:1-7. [DOI: 10.1016/j.carbpol.2019.04.067] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/02/2019] [Accepted: 04/18/2019] [Indexed: 11/27/2022]
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13
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Su RSC, Gill EE, Kim Y, Liu JC. Characterization of resilin-like proteins with tunable mechanical properties. J Mech Behav Biomed Mater 2019; 91:68-75. [PMID: 30544024 PMCID: PMC6774346 DOI: 10.1016/j.jmbbm.2018.11.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/18/2018] [Accepted: 11/18/2018] [Indexed: 11/17/2022]
Abstract
Resilin is an elastomeric protein abundant in insect cuticle. Its exceptional properties, which include high resilience and efficient energy storage, motivate its potential use in tissue engineering and drug delivery applications. Our lab has previously developed recombinant proteins based on the resilin-like sequence derived from Anopheles gambiae and demonstrated their promise as a scaffold for cartilage and vascular engineering. In this work, we describe a more thorough investigation of the physical properties of crosslinked resilin-like hydrogels. The resilin-like proteins rapidly form crosslinked hydrogels in physiological conditions. We also show that the mechanical properties of these resilin-like hydrogels can be modulated simply by varying the protein concentration or the stoichiometric ratio of crosslinker to crosslinking sites. Crosslinked resilin-like hydrogels were hydrophilic and had a high water content when swollen. In addition, these hydrogels exhibited moderate resilience values, which were comparable to those of common synthetic rubbers. Cryo-scanning electron microscopy showed that the crosslinked resilin-like hydrogels at 16 wt% featured a honeycomb-like structure. These studies thus demonstrate the potential to use recombinant resilin-like proteins in a wide variety of applications such as tissue engineering and drug delivery due to their tunable physical properties.
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Affiliation(s)
- Renay S-C Su
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN 47907-2100, United States
| | - Emily E Gill
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907-2032, United States
| | - Yeji Kim
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN 47907-2100, United States
| | - Julie C Liu
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN 47907-2100, United States; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907-2032, United States.
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14
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Gullotta F, Izzo D, Scalera F, Palazzo B, Martin I, Sannino A, Gervaso F. Biomechanical evaluation of hMSCs-based engineered cartilage for chondral tissue regeneration. J Mech Behav Biomed Mater 2018; 86:294-304. [DOI: 10.1016/j.jmbbm.2018.06.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/18/2018] [Accepted: 06/25/2018] [Indexed: 01/22/2023]
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15
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Jiang T, Kai D, Liu S, Huang X, Heng S, Zhao J, Chan BQY, Loh XJ, Zhu Y, Mao C, Zheng L. Mechanically cartilage-mimicking poly(PCL-PTHF urethane)/collagen nanofibers induce chondrogenesis by blocking NF-kappa B signaling pathway. Biomaterials 2018; 178:281-292. [PMID: 29945065 PMCID: PMC6301151 DOI: 10.1016/j.biomaterials.2018.06.023] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/26/2018] [Accepted: 06/14/2018] [Indexed: 12/15/2022]
Abstract
Cartilage cannot self-repair and thus regeneration is a promising approach to its repair. Here we developed new electrospun nanofibers, made of poly (ε-caprolactone)/polytetrahydrofuran (PCL-PTHF urethane) and collagen I from calf skin (termed PC), to trigger the chondrogenic differentiation of mesenchymal stem cells (MSCs) and the cartilage regeneration in vivo. We found that the PC nanofibers had a modulus (4.3 Mpa) lower than the PCL-PTHF urethane nanofibers without collagen I from calf skin (termed P) (6.8 Mpa) although both values are within the range of the modulus of natural cartilage (1-10 MPa). Both P and PC nanofibers did not show obvious difference in the morphology and size. Surprisingly, in the absence of the additional chondrogenesis inducers, the softer PC nanofibers could induce the chondrogenic differentiation in vitro and cartilage regeneration in vivo more efficiently than the stiffer P nanofibers. Using mRNA-sequence analysis, we found that the PC nanofibers outperformed P nanofibers in inducing chondrogenesis by specifically blocking the NF-kappa B signaling pathway to suppress inflammation. Our work shows that the PC nanofibers can serve as building blocks of new scaffolds for cartilage regeneration and provides new insights on the effect of the mechanical properties of the nanofibers on the cartilage regeneration.
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Affiliation(s)
- Tongmeng Jiang
- Department of Bone and Joint Surgery & Guangxi Key Laboratory of Regenerative Medicine, International Joint Laboratory on Regeneration of Bone and Soft Tissue, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, 530021, China; Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration & Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, 530021, China
| | - Dan Kai
- Institute of Materials Research and Engineering (IMRE), A*STAR, 3 Research Link, Singapore 117602, Singapore
| | - Sijia Liu
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration & Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, 530021, China; School of Preclinical Medicine, Guangxi Medical University, Nanning, 530021, China
| | - Xianyuan Huang
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration & Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, 530021, China
| | - Shujun Heng
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration & Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, 530021, China
| | - Jinmin Zhao
- Department of Bone and Joint Surgery & Guangxi Key Laboratory of Regenerative Medicine, International Joint Laboratory on Regeneration of Bone and Soft Tissue, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, 530021, China; Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration & Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, 530021, China.
| | - Benjamin Qi Yu Chan
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), A*STAR, 3 Research Link, Singapore 117602, Singapore; Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore; Singapore Eye Research Institute, 11 Third Hospital Avenue, Singapore 168751, Singapore
| | - Ye Zhu
- Department of Chemistry & Biochemistry, Stephenson Life Sciences Research Center, Institute for Biomedical Engineering, Science and Technology, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019-5300, USA
| | - Chuanbin Mao
- Department of Chemistry & Biochemistry, Stephenson Life Sciences Research Center, Institute for Biomedical Engineering, Science and Technology, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019-5300, USA; School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Li Zheng
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration & Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, 530021, China.
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Sun Y, Yan L, Chen S, Pei M. Functionality of decellularized matrix in cartilage regeneration: A comparison of tissue versus cell sources. Acta Biomater 2018; 74:56-73. [PMID: 29702288 PMCID: PMC7307012 DOI: 10.1016/j.actbio.2018.04.048] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 01/12/2023]
Abstract
Increasing evidence indicates that decellularized extracellular matrices (dECMs) derived from cartilage tissues (T-dECMs) or chondrocytes/stem cells (C-dECMs) can support proliferation and chondrogenic differentiation of cartilage-forming cells. However, few review papers compare the differences between these dECMs when they serve as substrates for cartilage regeneration. In this review, after an introduction of cartilage immunogenicity and decellularization methods to prepare T-dECMs and C-dECMs, a comprehensive comparison focuses on the effects of T-dECMs and C-dECMs on proliferation and chondrogenic differentiation of chondrocytes/stem cells in vitro and in vivo. Key factors within dECMs, consisting of microarchitecture characteristics and micromechanical properties as well as retained insoluble and soluble matrix components, are discussed in-depth for potential mechanisms underlying the functionality of these dECMs in regulating chondrogenesis. With this information, we hope to benefit dECM based cartilage engineering and tissue regeneration for future clinical application. STATEMENT OF SIGNIFICANCE The use of decellularized extracellular matrix (dECM) is becoming a promising approach for tissue engineering and regeneration. Compared to dECM derived from cartilage tissue, recently reported dECM from cell sources exhibits a distinct role in cell based cartilage regeneration. In this review paper, for the first time, tissue and cell based dECMs are comprehensively compared for their functionality in cartilage regeneration. This information is expected to provide an update for dECM based cartilage regeneration.
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Affiliation(s)
- Yu Sun
- Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, Morgantown, WV 26506, USA; Department of Orthopaedics, Orthopaedics Institute, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, China
| | - Lianqi Yan
- Department of Orthopaedics, Orthopaedics Institute, Subei People's Hospital of Jiangsu Province, Yangzhou, Jiangsu 225001, China
| | - Song Chen
- Department of Orthopaedics, Chengdu Military General Hospital, Chengdu, Sichuan 610083, China
| | - Ming Pei
- Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, Morgantown, WV 26506, USA; Exercise Physiology, West Virginia University, Morgantown, WV 26506, USA; WVU Cancer Institute, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506, USA.
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17
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Wood CR, Al Delfi IRT, Innes JF, Myint P, Johnson WEB. Exposing mesenchymal stem cells to chondroitin sulphated proteoglycans reduces their angiogenic and neuro-adhesive paracrine activity. Biochimie 2018; 155:26-36. [PMID: 29680669 DOI: 10.1016/j.biochi.2018.04.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 04/13/2018] [Indexed: 01/04/2023]
Abstract
The multifactorial complexity of spinal cord injuries includes the formation of a glial scar, of which chondroitin sulphated proteoglycans (CSPG) are an integral component. Previous studies have shown CSPG to have inhibitory effects on endothelial and neuronal cell growth, highlighting the difficulty of spinal cord regeneration. Mesenchymal stem/stromal cells (MSC) are widely used as a cell therapy, and there is mounting evidence for their angiogenic and neurotrophic paracrine properties. However, in vivo studies have observed poor engraftment and survival of MSC when injected into SCI. Currently, it is not known whether increasing CSPG concentrations seen after SCI may affect MSC; therefore we have investigated the effects of CSPG exposure to MSC in vitro. CSPG-mediated inhibition of MSC adhesion was observed when MSC were cultured on substrates of increasing CSPG concentration, however MSC viability was not affected even up to five days of culture. Culture conditioned medium harvested from these cultures (primed MSC CM) was used as both culture substrata and soluble medium for EA.hy926 endothelial cells and SH-SY5Y neuronal cells. MSC CM was angiogenic, promoting endothelial cell adhesion, proliferation and tubule formation. However, exposing MSC to CSPG reduced the effects of CSPG-primed MSC CM on endothelial cell adhesion and proliferation, but did not reduce MSC-induced endothelial tubule formation. Primed MSC CM also promoted neuronal cell adhesion, which was reduced following exposure to CSPG. There were no marked differences in neurite outgrowth in MSC CM from CSPG primed MSC cultures versus control conditions, although non-primed MSC CM from the same donors was found to significantly enhance neurite outgrowth. Taken together, these studies demonstrate that MSC are resilient to CSPG exposure, but that there is a marked effect of CSPG on their paracrine regenerative activity. The findings increase our understanding of how the wound microenvironment after SCI can mitigate the beneficial effects of MSC transplantation.
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Affiliation(s)
- Chelsea R Wood
- Biological Sciences, Faculty of Medicine, Dentistry and Life Sciences, University of Chester, Parkgate Road, Chester, CH1 4BJ, United Kingdom.
| | - Ibtesam R T Al Delfi
- Centre for Experimental Medicine, Queen's University, 97 Lisburn Road, Belfast, BT9 7BL, Northern Ireland, UK.
| | - John F Innes
- Veterinary Tissue Bank Ltd, Brynkinalt Business Centre, Wrexham, LL14 5NS, United Kingdom.
| | - Peter Myint
- Veterinary Tissue Bank Ltd, Brynkinalt Business Centre, Wrexham, LL14 5NS, United Kingdom.
| | - William E B Johnson
- Biological Sciences, Faculty of Medicine, Dentistry and Life Sciences, University of Chester, Parkgate Road, Chester, CH1 4BJ, United Kingdom.
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18
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Kohn C, Klemens JM, Kascholke C, Murthy NS, Kohn J, Brandenburger M, Hacker MC. Dual-component collagenous peptide/reactive oligomer hydrogels as potential nerve guidance materials - from characterization to functionalization. Biomater Sci 2018; 4:1605-1621. [PMID: 27722483 DOI: 10.1039/c6bm00397d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Toward a new generation of improved nerve guidance conduits (NGCs), novel biomaterials are required to address pressing clinical shortcomings in peripheral nerve regeneration (PNR) and to promote biological performance. A dual-component hydrogel system formed by cross-linking reaction between maleic anhydride groups in an oligomeric building block for cross-linking of free amine functionalities in partially hydrolyzed collagen is formulated for continuous processing and NGC fabrication. The influence of the gelation base is optimized for processing from a double syringe delivery system with a static mixer. A hydrophilic low-concentrated base was introduced to control network formation and to utilize highly reactive macromers for gelation. Cross-linking extent and building block conversion were improved and homogenous monoliths were fabricated. Chemically derivatized hydrogels were obtained by conversion of a fraction of anhydride groups in the oligomeric precursor with monovalent primary amine-containing grafting molecules prior to gelation. Network stability in functionalized hydrogels was maintained and cationic moieties were implement to the gel that promoted in vitro cell attachment and spreading irrespective of mechanical stiffness. A molding strategy was introduced that allowed for fabrication of flexible tubular conduits in tunable dimensions and with chemically patterned structures. These hydrogel-based conduits hold promise for the next generation NGCs with integrated chemical cues for PNR.
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Affiliation(s)
- C Kohn
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - J M Klemens
- Fraunhofer Research Institution for Marine Biotechnology EMB, 23562 Lübeck, Germany
| | - C Kascholke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - N S Murthy
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8066, USA
| | - J Kohn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8066, USA
| | - M Brandenburger
- Fraunhofer Research Institution for Marine Biotechnology EMB, 23562 Lübeck, Germany
| | - M C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
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19
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A microfabricated platform for the study of chondrogenesis under different compressive loads. J Mech Behav Biomed Mater 2018; 78:404-413. [DOI: 10.1016/j.jmbbm.2017.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 11/29/2017] [Accepted: 12/01/2017] [Indexed: 01/09/2023]
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20
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Cao B, Peng Y, Liu X, Ding J. Effects of Functional Groups of Materials on Nonspecific Adhesion and Chondrogenic Induction of Mesenchymal Stem Cells on Free and Micropatterned Surfaces. ACS APPLIED MATERIALS & INTERFACES 2017; 9:23574-23585. [PMID: 28616967 DOI: 10.1021/acsami.7b08339] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Functional groups of materials are known to affect cell behaviors, yet the corresponding effect on stem cell differentiation is always coupled with that of cell spreading; it is thus unclear whether the chemical groups influence cell differentiation directly or via cell spreading indirectly. Herein we used a unique surface patterning technique to decouple the corresponding effects. Mesenchymal stem cells (MSCs) derived from bone marrow were seeded on surfaces coated with alkanethiols with one of four functional end groups (-CH3, -OH, -COOH, and -NH2) and underwent 9 days of chondrogenic induction. The measurements of quartz crystal microbalance with dissipation confirmed less proteins adsorbed from the cell culture media on the neutral -CH3 and -OH surfaces than on the charged -COOH and -NH2 surfaces. The neutral surfaces exhibited less cell spreading and higher extents of chondrogenic differentiation than the charged surfaces, according to the characterizations of immunofluorescence staining and quantitative real-time polymerase chain reaction. We further used a transfer lithography technique to prepare patterned surfaces on nonfouling poly(ethylene glycol) hydrogels to localize single MSCs on microislands with self-assembly monolayers of different alkanethiols, under given microisland areas and thus well-defined spreading areas of cells. While small microislands were always beneficial for chondrogenic induction, we found that the type of functional groups had no significant effect on chondrogenic induction under the given cell spreading areas, implying that the chemical groups influence cell differentiation only indirectly. Our results hence illustrate that functional groups regulate stem cell differentiation via tuning protein adsorption and then nonspecific cell adhesion and thus cell spreading.
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Affiliation(s)
- Bin Cao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
| | - Yuanmeng Peng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
| | - Xiangnan Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
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21
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22
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Kohn-Polster C, Bhatnagar D, Woloszyn DJ, Richtmyer M, Starke A, Springwald AH, Franz S, Schulz-Siegmund M, Kaplan HM, Kohn J, Hacker MC. Dual-Component Gelatinous Peptide/Reactive Oligomer Formulations as Conduit Material and Luminal Filler for Peripheral Nerve Regeneration. Int J Mol Sci 2017; 18:E1104. [PMID: 28531139 PMCID: PMC5455012 DOI: 10.3390/ijms18051104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/09/2017] [Accepted: 05/17/2017] [Indexed: 02/01/2023] Open
Abstract
Toward the next generation of nerve guidance conduits (NGCs), novel biomaterials and functionalization concepts are required to address clinical demands in peripheral nerve regeneration (PNR). As a biological polymer with bioactive motifs, gelatinous peptides are promising building blocks. In combination with an anhydride-containing oligomer, a dual-component hydrogel system (cGEL) was established. First, hollow cGEL tubes were fabricated by a continuous dosing and templating process. Conduits were characterized concerning their mechanical strength, in vitro and in vivo degradation and biocompatibility. Second, cGEL was reformulated as injectable shear thinning filler for established NGCs, here tyrosine-derived polycarbonate-based braided conduits. Thereby, the formulation contained the small molecule LM11A-31. The biofunctionalized cGEL filler was assessed regarding building block integration, mechanical properties, in vitro cytotoxicity, and growth permissive effects on human adipose tissue-derived stem cells. A positive in vitro evaluation motivated further application of the filler material in a sciatic nerve defect. Compared to the empty conduit and pristine cGEL, the functionalization performed superior, though the autologous nerve graft remains the gold standard. In conclusion, LM11A-31 functionalized cGEL filler with extracellular matrix (ECM)-like characteristics and specific biochemical cues holds great potential to support PNR.
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Affiliation(s)
- Caroline Kohn-Polster
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
- Collaborative Research Center (SFB-TR67), Matrixengineering Leipzig and Dresden, Germany.
| | - Divya Bhatnagar
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
| | - Derek J Woloszyn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
- Boston University School of Medicine, Boston University, Boston, MA 02118, USA.
| | - Matthew Richtmyer
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
| | - Annett Starke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - Alexandra H Springwald
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - Sandra Franz
- Collaborative Research Center (SFB-TR67), Matrixengineering Leipzig and Dresden, Germany.
- Department of Dermatology, Venereology and Allergology of Medical Faculty of Leipzig University, 04317 Leipzig, Germany.
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
- Collaborative Research Center (SFB-TR67), Matrixengineering Leipzig and Dresden, Germany.
| | - Hilton M Kaplan
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
| | - Joachim Kohn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
| | - Michael C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
- Collaborative Research Center (SFB-TR67), Matrixengineering Leipzig and Dresden, Germany.
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23
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Yaylaci SU, Sen M, Bulut O, Arslan E, Guler MO, Tekinay AB. Chondrogenic Differentiation of Mesenchymal Stem Cells on Glycosaminoglycan-Mimetic Peptide Nanofibers. ACS Biomater Sci Eng 2016; 2:871-878. [DOI: 10.1021/acsbiomaterials.6b00099] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seher Ustun Yaylaci
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, Ankara 06800, Turkey
| | - Merve Sen
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, Ankara 06800, Turkey
| | - Ozlem Bulut
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, Ankara 06800, Turkey
| | - Elif Arslan
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, Ankara 06800, Turkey
| | - Mustafa O. Guler
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, Ankara 06800, Turkey
| | - Ayse B. Tekinay
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, Ankara 06800, Turkey
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24
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Pustlauk W, Paul B, Gelinsky M, Bernhardt A. Jellyfish collagen and alginate: Combined marine materials for superior chondrogenesis of hMSC. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 64:190-198. [PMID: 27127044 DOI: 10.1016/j.msec.2016.03.081] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 02/28/2016] [Accepted: 03/22/2016] [Indexed: 11/15/2022]
Abstract
Marine, hybrid constructs of porous scaffolds from fibrillized jellyfish collagen and alginate hydrogel are mimicking both of the main tissue components of cartilage, thus being a promising approach for chondrogenic differentiation of human mesenchymal stem cells (hMSC). Investigating their potential for articular cartilage repair, the present study examined scaffolds being either infiltrated with an alginate-cell-suspension (ACS) or seeded with hMSC and embedded in alginate after cell adhesion (EAS). Hybrid constructs with 2×10(5) and 4.5×10(5)hMSC/scaffold were compared to hMSC encapsulated in pure alginate discs, both chondrogenically stimulated for 21days. Typical round, chondrocyte-like morphology was observed in pure alginate gels and ACS scaffolds, while cells in EAS were elongated and tightly attached to the collagen pores. Col 2 gene expression was comparable in all scaffold types examined. However, the Col 2/Col 1 ratio was higher for pure alginate discs and ACS scaffolds compared to EAS. In contrast, cells in EAS scaffolds displayed higher gene expression of Sox 9, Col 11 and ACAN compared to ACS and pure alginate. Secretion of sulfated glycosaminoglycans (sGAG) was comparable for ACS and EAS scaffolds. In conclusion hybrid constructs of jellyfish collagen and alginate support hMSC chondrogenic differentiation and provide more stable and constructs compared to pure hydrogels.
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Affiliation(s)
- W Pustlauk
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Medical Faculty Carl Gustav Carus of Technische Universität Dresden, Fetscher Str. 74, 01307 Dresden, Germany
| | - B Paul
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Medical Faculty Carl Gustav Carus of Technische Universität Dresden, Fetscher Str. 74, 01307 Dresden, Germany
| | - M Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Medical Faculty Carl Gustav Carus of Technische Universität Dresden, Fetscher Str. 74, 01307 Dresden, Germany
| | - A Bernhardt
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Medical Faculty Carl Gustav Carus of Technische Universität Dresden, Fetscher Str. 74, 01307 Dresden, Germany.
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25
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Bennett NK, Dhaliwal A, Moghe PV. Convergence of Highly Resolved and Rapid Screening Platforms with Dynamically Engineered, Cell Phenotype-Prescriptive Biomaterials. ACTA ACUST UNITED AC 2016; 2:142-151. [PMID: 27482508 DOI: 10.1007/s40495-016-0057-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Biophysical and biochemical cues from the cellular microenvironment initiate intracellular signaling through cellular membrane receptors and trigger specific cell developmental programs. Extracellular substrates and matrix scaffolds engineered to mimic cell's native physiological environment must incorporate the multifactorial parameters (composition, micro and nanoscale organization and topography) of the extracellular matrix as well as the dynamic nature of the matrix. The design of such engineered biomaterials is challenged by the inherent complexity and dynamic nature of the cell-extracellular matrix reciprocity, while the validation of robust microenvironments requires a deeper, higher content phenotypic resolution of cell-matrix interactions alongside a rapid screening capability. To this end, high-throughput platforms are integral to facilitating the screening and optimization of complex engineered microenvironments for directing desired cell developmental pathway. This review highlights the recent advances in biomaterial platforms that present dynamic cues and enable high throughput screening of cell's response to a combination of micro-environmental factors. We also address some newer techniques involving high content image informatics to elucidate emergent cellular behaviors with a focus on stem cell regenerative endpoints.
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Affiliation(s)
- Neal K Bennett
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ
| | - Anandika Dhaliwal
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ
| | - Prabhas V Moghe
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ; Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ
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26
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Lin X, Shi Y, Cao Y, Liu W. Recent progress in stem cell differentiation directed by material and mechanical cues. ACTA ACUST UNITED AC 2016; 11:014109. [PMID: 26836059 DOI: 10.1088/1748-6041/11/1/014109] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stem cells play essential roles in tissue regeneration in vivo via specific lineage differentiation induced by environmental factors. In the past, biochemical signals were the focus of induced stem cell differentiation. As reported by Engler et al (2006 Cell 126 677-89), biophysical signal mediated stem cell differentiation could also serve as an important inducer. With the advancement of material science, it becomes a possible strategy to generate active biophysical signals for directing stem cell fate through specially designed material microstructures. In the past five years, significant progress has been made in this field, and these designed biophysical signals include material elasticity/rigidity, micropatterned structure, extracellular matrix (ECM) coated materials, material transmitted extracellular mechanical force etc. A large number of investigations involved material directed differentiation of mesenchymal stem cells, neural stem/progenitor cells, adipose derived stem cells, hematopoietic stem/progenitor cells, embryonic stem cells and other cells. Hydrogel based materials were commonly used to create varied mechanical properties via modifying the ratio of different components, crosslinking levels, matrix concentration and conjugation with other components. Among them, polyacrylamide (PAM) and polydimethylsiloxane (PDMS) hydrogels remained the major types of material. Specially designed micropatterning was not only able to create a unique topographical surface to control cell shape, alignment, cell-cell and cell-matrix contact for basic stem cell biology study, but also could be integrated with 3D bioprinting to generate micropattered 3D structure and thus to induce stem cell based tissue regeneration. ECM coating on a specific topographical structure was capable of inducing even more specific and potent stem cell differentiation along with soluble factors and mechanical force. The article overviews the progress of the past five years in this particular field.
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Affiliation(s)
- Xunxun Lin
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhi Zao Ju Rd, People's Republic of China. Shanghai Key Laboratory of Tissue Engineering Research, National Tissue Engineering Center of China, Shanghai, People's Republic of China
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27
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Gaut C, Sugaya K. Critical review on the physical and mechanical factors involved in tissue engineering of cartilage. Regen Med 2015; 10:665-79. [DOI: 10.2217/rme.15.31] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Articular cartilage defects often progress to osteoarthritis, which negatively impacts quality of life for millions of people worldwide and leads to high healthcare expenditures. Tissue engineering approaches to osteoarthritis have concentrated on proliferation and differentiation of stem cells by activation and suppression of signaling pathways, and by using a variety of scaffolding techniques. Recent studies indicate a key role of environmental factors in the differentiation of mesenchymal stem cells to mature cartilage-producing chondrocytes. Therapeutic approaches that consider environmental regulation could optimize chondrogenesis protocols for regeneration of articular cartilage. This review focuses on the effect of scaffold structure and composition, mechanical stress and hypoxia in modulating mesenchymal stem cell fate and the current use of these environmental factors in tissue engineering research.
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Affiliation(s)
- Carrie Gaut
- INDICASAT-AIP, Ciudad de Saber, Clayton, Apartado 0843-01103, Panama, Rep. de Panama
- Department of Biotechnology, Acharya Nagarjuna University, Guntur, Andhra Pradesh 522510, India
| | - Kiminobu Sugaya
- Burnett School of Biomedical Sciences, University of Central Florida College of Medicine, Orlando, FL 32827, USA
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Lv H, Li L, Sun M, Zhang Y, Chen L, Rong Y, Li Y. Mechanism of regulation of stem cell differentiation by matrix stiffness. Stem Cell Res Ther 2015; 6:103. [PMID: 26012510 PMCID: PMC4445995 DOI: 10.1186/s13287-015-0083-4] [Citation(s) in RCA: 236] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Stem cell behaviors are regulated by multiple microenvironmental cues. As an external signal, mechanical stiffness of the extracellular matrix is capable of governing stem cell fate determination, but how this biophysical cue is translated into intracellular signaling remains elusive. Here, we elucidate mechanisms by which stem cells respond to microenvironmental stiffness through the dynamics of the cytoskeletal network, leading to changes in gene expression via biophysical transduction signaling pathways in two-dimensional culture. Furthermore, a putative rapid shift from original mechanosensing to de novo cell-derived matrix sensing in more physiologically relevant three-dimensional culture is pointed out. A comprehensive understanding of stem cell responses to this stimulus is essential for designing biomaterials that mimic the physiological environment and advancing stem cell-based clinical applications for tissue engineering.
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Affiliation(s)
- Hongwei Lv
- The Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China. .,College of Public Health, Jilin University, Changchun, 130021, China.
| | - Lisha Li
- The Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China.
| | - Meiyu Sun
- The Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China.
| | - Yin Zhang
- The Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China. .,College of Public Health, Jilin University, Changchun, 130021, China.
| | - Li Chen
- The Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China. .,College of Public Health, Jilin University, Changchun, 130021, China.
| | - Yue Rong
- The Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China. .,College of Clinical Medicine, Jilin University, Changchun, 130021, China.
| | - Yulin Li
- The Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China.
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Thompson EM, Matsiko A, Farrell E, Kelly DJ, O'Brien FJ. Recapitulating endochondral ossification: a promising route toin vivobone regeneration. J Tissue Eng Regen Med 2014; 9:889-902. [DOI: 10.1002/term.1918] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 02/14/2014] [Accepted: 04/24/2014] [Indexed: 12/22/2022]
Affiliation(s)
- Emmet M. Thompson
- Tissue Engineering Research Group, Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute; Trinity College Dublin; Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre; Dublin Ireland
| | - Amos Matsiko
- Tissue Engineering Research Group, Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute; Trinity College Dublin; Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre; Dublin Ireland
| | - Eric Farrell
- Department of Oral and Maxillofacial Surgery, Erasmus MC; University Medical Centre Rotterdam; The Netherlands
| | - Daniel J. Kelly
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute; Trinity College Dublin; Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre; Dublin Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering; Trinity College Dublin; Ireland
| | - Fergal J. O'Brien
- Tissue Engineering Research Group, Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute; Trinity College Dublin; Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre; Dublin Ireland
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30
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RhoA controls Wnt upregulation on microstructured titanium surfaces. BIOMED RESEARCH INTERNATIONAL 2014; 2014:401859. [PMID: 24949442 PMCID: PMC4052847 DOI: 10.1155/2014/401859] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 03/20/2014] [Indexed: 01/12/2023]
Abstract
Rough topography enhances the activation of Wnt canonical signaling in vitro, and this mediates its effects on cell differentiation. However, the molecular mechanisms underlying topography-dependent control of Wnt signaling are still poorly understood. As the small GTPase RhoA controls cytoskeletal reorganization and actomyosin-induced tensional forces, we hypothesized that RhoA could affect the activation of Wnt signaling in cells on micropatterned titanium surfaces. G-LISA assay revealed that RhoA activation was higher in C2C12 cells on rough (SLA) surfaces under basal conditions than on smooth (Polished) titanium. Transfection with dominant negative RhoA decreased Wnt activation by normalized TCF-Luc activity on SLA, whilst transfection with constitutively active RhoA increased TCF-Luc activation on Polished titanium. One mM Myosin II inhibitor Blebbistatin increased RhoA activation but decreased Wnt activation on SLA surfaces, indicating that tension-generating structures are required for canonical Wnt modulation on titanium surfaces. Actin inhibitor Cytochalasin markedly enhanced RhoA and TCF-Luc activation on both surfaces and increased the expression of differentiation markers in murine osteoblastic MC3T3 cells. Taken together, these data show that RhoA is upregulated in cells on rough surfaces and it affects the activation of Wnt canonical signaling through Myosin II modulation.
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31
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Guo X, Chu X, Li W, Pan Q, You H. Chondrogenic effect of precartilaginous stem cells following NLS-TAT cell penetrating peptide-assisted transfection of eukaryotic hTGFβ3. J Cell Biochem 2014; 114:2588-94. [PMID: 23757322 DOI: 10.1002/jcb.24606] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 05/31/2013] [Indexed: 12/25/2022]
Abstract
Cell penetrating peptides (CPPs) are a series of promising carriers for delivering exogenous DNA to living cells. Among them, the combination of the human immunodeficiency virus TAT protein (TAT) with the SV40 large T protein nuclear localization signal (NLS) to form NLS-TAT performs well. In the present study, we took advantage of this new carrier to deliver transforming growth factor-beta 3 (TGFβ3) genes. TGFβ3 was expressed by the pEGFP-N1 vector following transfection of rat precartilaginous stem cells (PSCs), which promoted hTGFβ3 protein self-expression. At 24, 48, 72, and 120 h after transfection, the expression levels of hTGFβ3 were found to be elevated as compared with the control. The expression of hTGFβ3 was found to mediate the chondrogenic effect of PSCs. Thus, we determined the expression of the chondrogenesis-related genes type II collagen, Sox 9, and aggrecan in PSCs at 24, 48, 72, and 120 h after transfection. We found that their transcription and translation was augmented, which indicated a trend of active chondrogenesis in the PSCs. Our results demonstrated that NLS-TAT had the ability to deliver exogenous DNA into rat PSCs and could be actively expressed. This process successfully promoted PSC chondrogenesis. Additionally, PSC, may represent a new type of stem cells, and thus show great potential in regenerative repair following cartilage injury.
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Affiliation(s)
- Xin Guo
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
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Fernández-Muiños T, Suárez-Muñoz M, Sanmartí-Espinal M, Semino CE. Matrix Dimensions, Stiffness, and Structural Properties Modulate Spontaneous Chondrogenic Commitment of Mouse Embryonic Fibroblasts. Tissue Eng Part A 2014; 20:1145-55. [DOI: 10.1089/ten.tea.2013.0369] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Teresa Fernández-Muiños
- Tissue Engineering Laboratory, Department of Bioengineering, IQS School of Engineering, Barcelona, Spain
| | - Melva Suárez-Muñoz
- Tissue Engineering Laboratory, Department of Bioengineering, IQS School of Engineering, Barcelona, Spain
- IMC Fachhochschule Krems GesmbH, Krems, Austria
| | - Marta Sanmartí-Espinal
- Tissue Engineering Laboratory, Department of Bioengineering, IQS School of Engineering, Barcelona, Spain
| | - Carlos E. Semino
- Tissue Engineering Laboratory, Department of Bioengineering, IQS School of Engineering, Barcelona, Spain
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Kwon HJ, Yasuda K, Gong JP, Ohmiya Y. Polyelectrolyte hydrogels for replacement and regeneration of biological tissues. Macromol Res 2014. [DOI: 10.1007/s13233-014-2045-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Controlling stem cell-mediated bone regeneration through tailored mechanical properties of collagen scaffolds. Biomaterials 2013; 35:1176-84. [PMID: 24211076 DOI: 10.1016/j.biomaterials.2013.10.054] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 10/19/2013] [Indexed: 02/07/2023]
Abstract
Mechanical properties of the extracellular matrix (ECM) play an essential role in cell fate determination. To study the role of mechanical properties of ECM in stem cell-mediated bone regeneration, we used a 3D in vivo ossicle model that recapitulates endochondral bone formation. Three-dimensional gelatin scaffolds with distinct stiffness were developed using 1-Ethyl-3-[3-dimethylaminopropyl] carbodiimide hydrochloride (EDC) mediated zero-length crosslinking. The mechanical strength of the scaffolds was significantly increased by EDC treatment, while the microstructure of the scaffold was preserved. Cell behavior on the scaffolds with different mechanical properties was evaluated in vitro and in vivo. EDC-treated scaffolds promoted early chondrogenic differentiation, while it promoted both chondrogenic and osteogenic differentiation at later time points. Both micro-computed tomography and histologic data demonstrated that EDC-treatment significantly increased trabecular bone formation by transplanted cells transduced with AdBMP. Moreover, significantly increased chondrogenesis was observed in the EDC-treated scaffolds. Based on both in vitro and in vivo data, we conclude that the high mechanical strength of 3D scaffolds promoted stem cell mediated bone regeneration by promoting endochondral ossification. These data suggest a new method for harnessing stem cells for bone regeneration in vivo by tailoring the mechanical properties of 3D scaffolds.
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35
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MacQueen L, Sun Y, Simmons CA. Mesenchymal stem cell mechanobiology and emerging experimental platforms. J R Soc Interface 2013; 10:20130179. [PMID: 23635493 PMCID: PMC3673151 DOI: 10.1098/rsif.2013.0179] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 04/10/2013] [Indexed: 12/18/2022] Open
Abstract
Experimental control over progenitor cell lineage specification can be achieved by modulating properties of the cell's microenvironment. These include physical properties of the cell adhesion substrate, such as rigidity, topography and deformation owing to dynamic mechanical forces. Multipotent mesenchymal stem cells (MSCs) generate contractile forces to sense and remodel their extracellular microenvironments and thereby obtain information that directs broad aspects of MSC function, including lineage specification. Various physical factors are important regulators of MSC function, but improved understanding of MSC mechanobiology requires novel experimental platforms. Engineers are bridging this gap by developing tools to control mechanical factors with improved precision and throughput, thereby enabling biological investigation of mechanics-driven MSC function. In this review, we introduce MSC mechanobiology and review emerging cell culture platforms that enable new insights into mechanobiological control of MSCs. Our main goals are to provide engineers and microtechnology developers with an up-to-date description of MSC mechanobiology that is relevant to the design of experimental platforms and to introduce biologists to these emerging platforms.
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Affiliation(s)
- Luke MacQueen
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Yu Sun
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Craig A. Simmons
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
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