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Takuma M, Fujita H, Zushi N, Nagano H, Azuma R, Kiyosawa T, Fujie T. An intrinsically semi-permeable PDMS nanosheet encapsulating adipose tissue-derived stem cells for enhanced angiogenesis. Biomater Sci 2024; 12:3401-3410. [PMID: 38804980 DOI: 10.1039/d4bm00460d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Cell encapsulation devices are expected to be promising tools that can control the release of therapeutic proteins secreted from transplanted cells. The protein permeability of the device membrane is important because it allows the isolation of transplanted cells while enabling the effectiveness of the device. In this study, we investigated free-standing polymeric ultra-thin films (nanosheets) as an intrinsically semi-permeable membrane made from polydimethylsiloxane (PDMS). The PDMS nanosheet with a thickness of 600 nm showed intrinsic protein permeability, and the device fabricated with the PDMS nanosheet showed that VEGF secreted from implanted adipose tissue-derived stem cells (ASCs) could be released for at least 5 days. The ASC encapsulation device promoted angiogenesis and the development of granulation tissue 1 week after transplantation to the subcutaneous area of a mouse. This cell encapsulation device consisting of PDMS nanosheets provides a new method for pre-vascularization of the subcutaneous area in cell transplantation therapy.
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Affiliation(s)
- Megumi Takuma
- School of Life Science and Technology, Tokyo Institute of Technology, B-50, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan.
| | - Hajime Fujita
- School of Life Science and Technology, Tokyo Institute of Technology, B-50, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan.
| | - Nanami Zushi
- School of Life Science and Technology, Tokyo Institute of Technology, B-50, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan.
| | - Hisato Nagano
- Department of Plastic and Reconstructive Surgery, National Defense Medical College, Tokorozawa, Saitama 359-8513, Japan
| | - Ryuichi Azuma
- Department of Plastic and Reconstructive Surgery, National Defense Medical College, Tokorozawa, Saitama 359-8513, Japan
| | - Tomoharu Kiyosawa
- Department of Plastic and Reconstructive Surgery, National Defense Medical College, Tokorozawa, Saitama 359-8513, Japan
| | - Toshinori Fujie
- School of Life Science and Technology, Tokyo Institute of Technology, B-50, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan.
- Research Center for Autonomous Systems Materialogy (ASMat), Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
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2
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Popescu RC, Calin BS, Tanasa E, Vasile E, Mihailescu M, Paun IA. Magnetically-actuated microcages for cells entrapment, fabricated by laser direct writing via two photon polymerization. Front Bioeng Biotechnol 2023; 11:1273277. [PMID: 38170069 PMCID: PMC10758856 DOI: 10.3389/fbioe.2023.1273277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 11/14/2023] [Indexed: 01/05/2024] Open
Abstract
The manipulation of biological materials at cellular level constitutes a sine qua non and provocative research area regarding the development of micro/nano-medicine. In this study, we report on 3D superparamagnetic microcage-like structures that, in conjunction with an externally applied static magnetic field, were highly efficient in entrapping cells. The microcage-like structures were fabricated using Laser Direct Writing via Two-Photon Polymerization (LDW via TPP) of IP-L780 biocompatible photopolymer/iron oxide superparamagnetic nanoparticles (MNPs) composite. The unique properties of LDW via TPP technique enabled the reproduction of the complex architecture of the 3D structures, with a very high accuracy i.e., about 90 nm lateral resolution. 3D hyperspectral microscopy was employed to investigate the structural and compositional characteristics of the microcage-like structures. Scanning Electron Microscopy coupled with Energy Dispersive X-Ray Spectroscopy was used to prove the unique features regarding the morphology and the functionality of the 3D structures seeded with MG-63 osteoblast-like cells. Comparative studies were made on microcage-like structures made of IP-L780 photopolymer alone (i.e., without superparamagnetic properties). We found that the cell-seeded structures made by IP-L780/MNPs composite actuated by static magnetic fields of 1.3 T were 13.66 ± 5.11 folds (p < 0.01) more efficient in terms of cells entrapment than the structures made by IP-L780 photopolymer alone (i.e., that could not be actuated magnetically). The unique 3D architecture of the microcage-like superparamagnetic structures and their actuation by external static magnetic fields acted in synergy for entrapping osteoblast-like cells, showing a significant potential for bone tissue engineering applications.
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Affiliation(s)
- Roxana Cristina Popescu
- Department of Bioengineering and Biotechnology, Faculty of Medical Engineering, Politehnica University from Bucharest, Bucharest, Romania
- Department of Life and Environmental Physics, National Institute for R&D in Physics and Nuclear Engineering “Horia Hulubei”, Magurele, Romania
- Faculty of Applied Physics, Politehnica University from Bucharest, Bucharest, Romania
| | - Bogdan Stefanita Calin
- Center for Advanced Laser Technologies (CETAL), National Institute for Laser, Plasma and Radiation Physics, Magurelee, Romania
| | - Eugenia Tanasa
- Department of Physics, Faculty of Applied Physics, Politehnica University from Bucharest, Bucharest, Romania
| | - Eugeniu Vasile
- Faculty of Applied Physics, Politehnica University from Bucharest, Bucharest, Romania
| | - Mona Mihailescu
- Department of Physics, Faculty of Applied Physics, Politehnica University from Bucharest, Bucharest, Romania
| | - Irina Alexandra Paun
- Center for Advanced Laser Technologies (CETAL), National Institute for Laser, Plasma and Radiation Physics, Magurelee, Romania
- Department of Physics, Faculty of Applied Physics, Politehnica University from Bucharest, Bucharest, Romania
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3
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Dong L, Li X, Leng W, Guo Z, Cai T, Ji X, Xu C, Zhu Z, Lin J. Adipose stem cells in tissue regeneration and repair: From bench to bedside. Regen Ther 2023; 24:547-560. [PMID: 37854632 PMCID: PMC10579872 DOI: 10.1016/j.reth.2023.09.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 10/20/2023] Open
Abstract
ADSCs are a large number of mesenchymal stem cells in Adipose tissue, which can be applied to tissue engineering. ADSCs have the potential of multi-directional differentiation, and can differentiate into bone tissue, cardiac tissue, urothelial cells, skin tissue, etc. Compared with other mesenchymal stem cells, ADSCs have a multitude of promising advantages, such as abundant number, accessibility in cell culture, stable function, and less immune rejection. There are two main methods to use ADSCs for tissue repair and regeneration. One is to implant the "ADSCs-scaffold composite" into the injured site to promote tissue regeneration. The other is cell-free therapy: using ADSC-exos or ADSC-CM alone to release a large number of miRNAs, cytokines and other bioactive substances to promote tissue regeneration. The tissue regeneration potential of ADSCs is regulated by a variety of cytokines, signaling molecules, and external environment. The differentiation of ADSCs into different tissues is also induced by growth factors, ions, hormones, scaffold materials, physical stimulation, and other factors. The specific mechanisms are complex, and most of the signaling pathways need to be further explored. This article reviews and summarizes the mechanism and clinical application of ADSCs in tissue injury repair so far, and puts forward further problems that need to be solved in this field, hoping to provide directions for further research in this field.
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Affiliation(s)
- Lei Dong
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
| | - Xiaoyu Li
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
| | - Wenyuan Leng
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
| | - Zhenke Guo
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
| | - Tianyu Cai
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
| | - Xing Ji
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
| | - Chunru Xu
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
| | - Zhenpeng Zhu
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
| | - Jian Lin
- Department of Urology, Peking University First Hospital, Beijing, 100034, China
- Institute of Urology, Peking University, Beijing, 100034, China
- National Urological Cancer Center, Beijing, 100034, China
- Beijing Key Laboratory of Urogenital Diseases (male) Molecular Diagnosis and Treatment Center, Beijing, 100034, China
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Socci MC, Rodríguez G, Oliva E, Fushimi S, Takabatake K, Nagatsuka H, Felice CJ, Rodríguez AP. Polymeric Materials, Advances and Applications in Tissue Engineering: A Review. Bioengineering (Basel) 2023; 10:bioengineering10020218. [PMID: 36829712 PMCID: PMC9952269 DOI: 10.3390/bioengineering10020218] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/28/2023] [Accepted: 01/29/2023] [Indexed: 02/10/2023] Open
Abstract
Tissue Engineering (TE) is an interdisciplinary field that encompasses materials science in combination with biological and engineering sciences. In recent years, an increase in the demand for therapeutic strategies for improving quality of life has necessitated innovative approaches to designing intelligent biomaterials aimed at the regeneration of tissues and organs. Polymeric porous scaffolds play a critical role in TE strategies for providing a favorable environment for tissue restoration and establishing the interaction of the biomaterial with cells and inducing substances. This article reviewed the various polymeric scaffold materials and their production techniques, as well as the basic elements and principles of TE. Several interesting strategies in eight main TE application areas of epithelial, bone, uterine, vascular, nerve, cartilaginous, cardiac, and urinary tissue were included with the aim of learning about current approaches in TE. Different polymer-based medical devices approved for use in clinical trials and a wide variety of polymeric biomaterials are currently available as commercial products. However, there still are obstacles that limit the clinical translation of TE implants for use wide in humans, and much research work is still needed in the field of regenerative medicine.
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Affiliation(s)
- María Cecilia Socci
- Laboratorio de Medios e Interfases (LAMEIN), Departamento de Bioingeniería, FACET-UNT, Tucumán 4000, Argentina
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET, Tucumán 4000, Argentina
- Correspondence: (M.C.S.); (A.P.R.)
| | - Gabriela Rodríguez
- Laboratorio de Medios e Interfases (LAMEIN), Departamento de Bioingeniería, FACET-UNT, Tucumán 4000, Argentina
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET, Tucumán 4000, Argentina
| | - Emilia Oliva
- Laboratorio de Medios e Interfases (LAMEIN), Departamento de Bioingeniería, FACET-UNT, Tucumán 4000, Argentina
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET, Tucumán 4000, Argentina
| | - Shigeko Fushimi
- Department of Oral Pathology and Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan
- Department of Oral Pathology and Medicine, Okayama University Dental School, Okayama 700-8525, Japan
| | - Kiyofumi Takabatake
- Department of Oral Pathology and Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan
| | - Hitoshi Nagatsuka
- Department of Oral Pathology and Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan
| | - Carmelo José Felice
- Laboratorio de Medios e Interfases (LAMEIN), Departamento de Bioingeniería, FACET-UNT, Tucumán 4000, Argentina
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET, Tucumán 4000, Argentina
| | - Andrea Paola Rodríguez
- Laboratorio de Medios e Interfases (LAMEIN), Departamento de Bioingeniería, FACET-UNT, Tucumán 4000, Argentina
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET, Tucumán 4000, Argentina
- Correspondence: (M.C.S.); (A.P.R.)
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Brembilla NC, Vuagnat H, Boehncke WH, Krause KH, Preynat-Seauve O. Adipose-Derived Stromal Cells for Chronic Wounds: Scientific Evidence and Roadmap Toward Clinical Practice. Stem Cells Transl Med 2022; 12:17-25. [PMID: 36571216 PMCID: PMC9887085 DOI: 10.1093/stcltm/szac081] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/16/2022] [Indexed: 12/27/2022] Open
Abstract
Chronic wounds, ie, non-healing ulcers, have a prevalence of ~1% in the general population. Chronic wounds strongly affect the quality of life and generate considerable medical costs. A fraction of chronic wounds will heal within months of appropriate treatment; however, a significant fraction of patients will develop therapy-refractory chronic wounds, leading to chronic pain, infection, and amputation. Given the paucity of therapeutic options for refractory wounds, cell therapy and in particular the use of adipose-derived stromal cells (ASC) has emerged as a promising concept. ASC can be used as autologous or allogeneic cells. They can be delivered in suspension or in 3D cultures within scaffolds. ASC can be used without further processing (stromal vascular fraction of the adipose tissue) or can be expanded in vitro. ASC-derived non-cellular components, such as conditioned media or exosomes, have also been investigated. Many in vitro and preclinical studies in animals have demonstrated the ASC efficacy on wounds. ASC efficiency appears to occurs mainly through their regenerative secretome. Hitherto, the majority of clinical trials focused mainly on safety issues. However more recently, a small number of randomized, well-controlled trials provided first convincing evidences for a clinical efficacy of ASC-based chronic wound therapies in humans. This brief review summarizes the current knowledge on the mechanism of action, delivery and efficacy of ASC in chronic wound therapy. It also discusses the scientific and pharmaceutical challenges to be solved before ASC-based wound therapy enters clinical reality.
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Affiliation(s)
- Nicolo C Brembilla
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland,Division of Dermatology and Venereology, Geneva University Hospitals, Geneva, Switzerland
| | - Hubert Vuagnat
- Program for Wounds and Wound Healing, Care Directorate, Geneva University Hospitals, Geneva, Switzerland
| | - Wolf-Henning Boehncke
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland,Division of Dermatology and Venereology, Geneva University Hospitals, Geneva, Switzerland
| | - Karl-Heinz Krause
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland,Laboratory of Therapy and Stem Cells, Geneva University Hospitals, Geneva, Switzerland
| | - Olivier Preynat-Seauve
- Corresponding author: Olivier Preynat-Seauve, PATIM, 1 rue Michel Servet CH-1211 Geneva 4, Switzerland. Tel: +41223794139;
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Strategies to capitalize on cell spheroid therapeutic potential for tissue repair and disease modeling. NPJ Regen Med 2022; 7:70. [PMID: 36494368 PMCID: PMC9734656 DOI: 10.1038/s41536-022-00266-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
Cell therapies offer a tailorable, personalized treatment for use in tissue engineering to address defects arising from trauma, inefficient wound repair, or congenital malformation. However, most cell therapies have achieved limited success to date. Typically injected in solution as monodispersed cells, transplanted cells exhibit rapid cell death or insufficient retention at the site, thereby limiting their intended effects to only a few days. Spheroids, which are dense, three-dimensional (3D) aggregates of cells, enhance the beneficial effects of cell therapies by increasing and prolonging cell-cell and cell-matrix signaling. The use of spheroids is currently under investigation for many cell types. Among cells under evaluation, spheroids formed of mesenchymal stromal cells (MSCs) are particularly promising. MSC spheroids not only exhibit increased cell survival and retained differentiation, but they also secrete a potent secretome that promotes angiogenesis, reduces inflammation, and attracts endogenous host cells to promote tissue regeneration and repair. However, the clinical translation of spheroids has lagged behind promising preclinical outcomes due to hurdles in their formation, instruction, and use that have yet to be overcome. This review will describe the current state of preclinical spheroid research and highlight two key examples of spheroid use in clinically relevant disease modeling. It will highlight techniques used to instruct the phenotype and function of spheroids, describe current limitations to their use, and offer suggestions for the effective translation of cell spheroids for therapeutic treatments.
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Hong IS. Enhancing Stem Cell-Based Therapeutic Potential by Combining Various Bioengineering Technologies. Front Cell Dev Biol 2022; 10:901661. [PMID: 35865629 PMCID: PMC9294278 DOI: 10.3389/fcell.2022.901661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 06/17/2022] [Indexed: 12/05/2022] Open
Abstract
Stem cell-based therapeutics have gained tremendous attention in recent years due to their wide range of applications in various degenerative diseases, injuries, and other health-related conditions. Therapeutically effective bone marrow stem cells, cord blood- or adipose tissue-derived mesenchymal stem cells (MSCs), embryonic stem cells (ESCs), and more recently, induced pluripotent stem cells (iPSCs) have been widely reported in many preclinical and clinical studies with some promising results. However, these stem cell-only transplantation strategies are hindered by the harsh microenvironment, limited cell viability, and poor retention of transplanted cells at the sites of injury. In fact, a number of studies have reported that less than 5% of the transplanted cells are retained at the site of injury on the first day after transplantation, suggesting extremely low (<1%) viability of transplanted cells. In this context, 3D porous or fibrous national polymers (collagen, fibrin, hyaluronic acid, and chitosan)-based scaffold with appropriate mechanical features and biocompatibility can be used to overcome various limitations of stem cell-only transplantation by supporting their adhesion, survival, proliferation, and differentiation as well as providing elegant 3-dimensional (3D) tissue microenvironment. Therefore, stem cell-based tissue engineering using natural or synthetic biomimetics provides novel clinical and therapeutic opportunities for a number of degenerative diseases or tissue injury. Here, we summarized recent studies involving various types of stem cell-based tissue-engineering strategies for different degenerative diseases. We also reviewed recent studies for preclinical and clinical use of stem cell-based scaffolds and various optimization strategies.
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Affiliation(s)
- In-Sun Hong
- Department of Health Sciences and Technology, GAIHST, Gachon University, Seongnam, South Korea
- Department of Molecular Medicine, School of Medicine, Gachon University, Seongnam, South Korea
- *Correspondence: In-Sun Hong,
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Yu J, Hsu YC, Lee JK, Cheng NC. Enhanced angiogenic potential of adipose-derived stem cell sheets by integration with cell spheroids of the same source. Stem Cell Res Ther 2022; 13:276. [PMID: 35765015 PMCID: PMC9241243 DOI: 10.1186/s13287-022-02948-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 06/09/2022] [Indexed: 11/24/2022] Open
Abstract
Background Adipose-derived stem cell (ASC) has been considered as a desirable source for cell therapy. In contrast to combining scaffold materials with cells, ASCs can be fabricated into scaffold-free three-dimensional (3D) constructs to promote regeneration at tissue level. However, previous reports have found decreased expression of vascular endothelial growth factor (VEGF) in ASC sheets. In this study, we aimed to integrate ASC spheroids into ASC sheets to enhance the angiogenic capability of cell sheets. Methods ASCs were seeded in agarose microwells to generate uniform cell spheroids with adjustable size, while extracellular matrix deposition could be stimulated by ascorbic acid 2-phosphate to form ASC sheets. RNA sequencing was performed to identify the transcriptomic profiles of ASC spheroids and sheets relative to monolayer ASCs. By transferring ASC spheroids onto ASC sheets, the spheroid sheet composites could be successfully fabricated after a short-term co-culture, and their angiogenic potential was evaluated in vitro and in ovo. Results RNA sequencing analysis revealed that upregulation of angiogenesis-related genes was found only in ASC spheroids. The stimulating effect of spheroid formation on ASCs toward endothelial lineage was demonstrated by enhanced CD31 expression, which maintained after ASC spheroids were seeded on cell sheets. Relative to ASC sheets, enhanced expression of VEGF and hepatocyte growth factor was also noted in ASC spheroid sheets, and conditioned medium of ASC spheroid sheets significantly enhanced tube formation of endothelial cells in vitro. Moreover, chick embryo chorioallantoic membrane assay showed a significantly higher capillary density with more branch points after applying ASC spheroid sheets, and immunohistochemistry also revealed a significantly higher ratio of CD31-positive area. Conclusion In the spheroid sheet construct, ASC spheroids can augment the pro-angiogenesis capability of ASC sheets without the use of exogenous biomaterial or genetic manipulation. The strategy of this composite system holds promise as an advance in 3D culture technique of ASCs for future application in angiogenesis and regeneration therapies. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-02948-3.
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Affiliation(s)
- Jiashing Yu
- Department of Chemical Engineering, College of Engineering, National Taiwan University, 1 Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
| | - Yi-Chiung Hsu
- Department of Biomedical Sciences and Engineering, National Central University, 300 Zhongda Rd., Taoyuan 320, Taiwan
| | - Jen-Kuang Lee
- Department of Medicine, National Taiwan University Hospital and College of Medicine, 7 Chung-Shan S. Rd., Taipei 100, Taiwan
| | - Nai-Chen Cheng
- Department of Surgery, National Taiwan University Hospital and College of Medicine, 7 Chung-Shan S. Rd., Taipei 100, Taiwan.
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9
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Suematsu Y, Nagano H, Kiyosawa T, Takeoka S, Fujie T. Angiogenic efficacy of ASC spheroids filtrated on porous nanosheets for the treatment of a diabetic skin ulcer. J Biomed Mater Res B Appl Biomater 2021; 110:1245-1254. [PMID: 34931751 DOI: 10.1002/jbm.b.34995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/30/2021] [Accepted: 12/05/2021] [Indexed: 11/09/2022]
Abstract
Stem cell transplantation is expected to be an effective treatment for intractable skin ulcers by promoting angiogenesis; however, it is challenging to quickly realize a sufficient bloodstream for the ulcers. For this treatment, sheet-like materials with monolayer cells such as cell sheets have been investigated. However, they have a limitation of cell number that can be transplanted at one time due to the two-dimensional, monolayer cell structure, and sufficient secretion of growth factors cannot be expected. In this regard, cellular aggregates, such as spheroids, can reproduce three-dimensional cell-cell interactions that cause biological functions of living tissues more representative than monolayer cells, which is important to achieving efficient secretion of growth factors. In this study, we focused on free-standing porous polymer ultrathin films ("porous nanosheets") comprising poly(d,l-lactic acid) (PDLLA) and succeeded in developing a spheroid-covered nanosheet, on which more than 1000 spheroids from adipose-tissue derived stem cells (ASCs) were loaded. The porous structure with an average pore diameter of 4 μm allowed for facile filtration and carrying spheroids on the nanosheet, as well as sufficient oxygen and nutrients inflow to the cells. The spheroid-covered nanosheet achieved homogeneous transference of spheroids to a whole skin defect in diabetic model mice. Given the continuous release of vascular endothelial growth factor (VEGF) from the spheroids, the transplanted spheroids promoted healing with more accelerated angiogenesis than a nanosheet with a monolayer of cells. The spheroid-covered nanosheet may be a new regenerative material for promoting intractable skin ulcer healing.
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Affiliation(s)
- Yoshitaka Suematsu
- Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Hisato Nagano
- Department of Plastic Surgery, National Defense Medical College, Saitama, Japan
| | - Tomoharu Kiyosawa
- Department of Plastic Surgery, National Defense Medical College, Saitama, Japan
| | - Shinji Takeoka
- Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan.,Institute for Advanced Research of Biosystem Dynamics, Research Institute for Science and Engineering, Waseda University, Tokyo, Japan
| | - Toshinori Fujie
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan.,Research Organization for Nano & Life Innovation, Waseda University, Tokyo, Japan
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10
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Moreira HR, Marques AP. Vascularization in skin wound healing: where do we stand and where do we go? Curr Opin Biotechnol 2021; 73:253-262. [PMID: 34555561 DOI: 10.1016/j.copbio.2021.08.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/23/2021] [Accepted: 08/31/2021] [Indexed: 12/12/2022]
Abstract
Cutaneous healing is a highly complex process that, if altered due to, for example, impaired vascularization, results in chronic wounds or repaired neotissue of poor quality. Significant progress has been achieved in promoting neotissue vascularization during tissue repair/regeneration. In this review, we discuss the strategies that have been explored and how each one of them contributes to regulate vascularization in the context of cutaneous wound healing from two different perspectives - biomaterial-based and a cell-based approaches. Finally, we discuss the implications of these findings on the development of the 'next generation' approaches to target vascularization in wound healing highlighting the importance of going beyond its contribution to regulate vascularization and take into consideration the temporal features of the healing process and of different types of wounds.
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Affiliation(s)
- Helena R Moreira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark - Zona Industrial da Gandra, Guimarães 4805-017, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães 4805-017, Portugal
| | - Alexandra P Marques
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark - Zona Industrial da Gandra, Guimarães 4805-017, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães 4805-017, Portugal.
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