1
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The progress in techniques for culturing human limbal epithelial stem cells. Hum Cell 2023; 36:1-14. [PMID: 36181663 DOI: 10.1007/s13577-022-00794-2] [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: 07/21/2022] [Accepted: 09/11/2022] [Indexed: 01/07/2023]
Abstract
In vitro culture of human limbal epithelial stem cells (hLESCs) is crucial to cell therapy in the treatment of limbal stem cell deficiency, a potentially vision-threatening disease that is characterized by persistent corneal epithelial defects and corneal epithelium conjunctivalization. Traditionally, hLESCs are cultivated based on either limbal tissue explants or single-cell suspensions in culture media containing xenogenous components, such as fetal bovine serum and murine 3T3 feeder cells. Plastic culture dishes and human amniotic membranes are classical growth substrates used in conventional hLESC culture systems. The past few decades have witnessed considerable progress and innovations in hLESC culture techniques to ensure a higher level of biosafety and lower immunogenicity for further cell treatment, including complete removal of xenogenous components from culture media, the application of human-derived feeder cells, and the development of novel scaffolds. Three-dimensional artificial niches and three-dimensional culture techniques have also been established to simulate the real microenvironment of limbal crypts for better cell outgrowth and proliferation. All these progresses ensure that in vitro cultured hLESCs are more adaptable to translational stem cell therapy for limbal stem cell deficiency.
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Jang Y, Kim H, Jung J, Oh J. Controlled Thin Polydimethylsiloxane Membrane with Small and Large Micropores for Enhanced Attachment and Detachment of the Cell Sheet. MEMBRANES 2022; 12:membranes12070688. [PMID: 35877891 PMCID: PMC9315480 DOI: 10.3390/membranes12070688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/30/2022] [Accepted: 06/30/2022] [Indexed: 02/01/2023]
Abstract
Polydimethylsiloxane (PDMS) membranes can allow the precise control of well-defined micropore generation. A PDMS solution was mixed with a Rushton impeller to generate a large number of microbubbles. The mixed solution was spin-coated on silicon wafer to control the membrane thickness. The microbubbles caused the generation of a large number of small and large micropores in the PDMS membranes with decreased membrane thickness. The morphology of the thinner porous PDMS membrane induced higher values of roughness, Young’s modulus, contact angle, and air permeability. At day 7, the viability of cells on the porous PDMS membranes fabricated at the spin-coating speed of 5000 rpm was the highest (more than 98%) due to their internal networking structure and surface properties. These characteristics closely correlated with the increased formation of actin stress fibers and migration of keratinocyte cells, resulting in enhanced physical connection of actin stress fibers of neighboring cells throughout the discontinuous adherent junctions. The intact detachment of a cell sheet attached to a porous PDMS membrane was demonstrated. Therefore, PDMS has a great potential for enhancing the formation of cell sheets in regenerative medicine.
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Affiliation(s)
- Yeongseok Jang
- Department of Mechanical Design Engineering, College of Engineering, Jeonbuk National University, Jeonju 54896, Korea;
| | - Hyojae Kim
- Center for Social Innovation Policy, Office of S&T Policy Planning, Korea Institute of S&T Evaluation and Planning, Eumseong 27740, Korea;
| | - Jinmu Jung
- Department of Nano-bio Mechanical System Engineering, College of Engineering, Jeonbuk National University, Jeonju 54896, Korea
- Correspondence: (J.J.); (J.O.); Tel.: +82-632704572 (J.J.); +82-632702451 (J.O.)
| | - Jonghyun Oh
- Department of Nano-bio Mechanical System Engineering, College of Engineering, Jeonbuk National University, Jeonju 54896, Korea
- Correspondence: (J.J.); (J.O.); Tel.: +82-632704572 (J.J.); +82-632702451 (J.O.)
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3
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Saito H, Kato M, Hirai K, Kiyama M, Ohyama K, Hanzawa H, Nakane A, Sekiya S, Yoshida K, Kishino A, Tsuchida A, Kimura T, Takahashi J, Takeda S. Analysis of extracellular vesicles as a potential index for monitoring differentiation of neural lineage cells from induced pluripotent stem cells. J Biosci Bioeng 2021; 132:381-389. [PMID: 34284947 DOI: 10.1016/j.jbiosc.2021.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/01/2021] [Accepted: 06/10/2021] [Indexed: 12/15/2022]
Abstract
To improve cell production efficacy, it is important to evaluate cell conditions during culture. Extracellular vesicles (EVs) secreted from various cells are involved in stem cell differentiation. As EVs carry information about their source cells, we hypothesized that they may serve as a noninvasive index of cell conditions. We evaluated changes in EV morphology, concentration, and microRNA (miRNA) and protein expression in culture supernatants during the differentiation of induced pluripotent stem cells (iPSCs) into neural lineage cells, for application in regenerative medicine for Parkinson's disease. We observed EVs (50-150 nm) in culture supernatants of iPSCs and differentiated cells. The EVs expressed the exosome markers CD63, CD81, and CD9. Throughout differentiation, the EV concentration in the supernatants decreased, and EV miRNA and protein expression changed substantially. Especially, miR-106b, involved in neural stem cell differentiation and normal brain development, was considerably downregulated. CD63 expression correlated with the CORIN-positive cell rate, which is an index of differentiation. Thus, EV concentration and miRNA and protein expression may reflect the differentiation status of iPSCs. These findings pave the way for the development of novel and sensitive cell culture monitoring methods.
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Affiliation(s)
- Hikaru Saito
- Center for Exploratory Research, Research and Development Group, Hitachi, Ltd., Kobe Center for Medical Innovation Building 201, 6-3-5 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Midori Kato
- Center for Exploratory Research, Research and Development Group, Hitachi, Ltd., Kobe Center for Medical Innovation Building 201, 6-3-5 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Kakuro Hirai
- Center for Exploratory Research, Research and Development Group, Hitachi, Ltd., Kobe Center for Medical Innovation Building 201, 6-3-5 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Masaharu Kiyama
- Center for Exploratory Research, Research and Development Group, Hitachi, Ltd., Kobe Center for Medical Innovation Building 201, 6-3-5 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Kunio Ohyama
- Center for Exploratory Research, Research and Development Group, Hitachi, Ltd., Kobe Center for Medical Innovation Building 201, 6-3-5 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Hiroko Hanzawa
- Center for Exploratory Research, Research and Development Group, Hitachi, Ltd., Kobe Center for Medical Innovation Building 201, 6-3-5 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Atsushi Nakane
- Regenerative and Cellular Medicine Kobe Center, Sumitomo Dainippon Pharma Co., Ltd., Kobe KIMEC Center Building 5th Fl., 1-5-2 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Sayaka Sekiya
- Regenerative and Cellular Medicine Kobe Center, Sumitomo Dainippon Pharma Co., Ltd., Kobe KIMEC Center Building 5th Fl., 1-5-2 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Kenji Yoshida
- Regenerative and Cellular Medicine Kobe Center, Sumitomo Dainippon Pharma Co., Ltd., Kobe KIMEC Center Building 5th Fl., 1-5-2 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Akiyoshi Kishino
- Regenerative and Cellular Medicine Kobe Center, Sumitomo Dainippon Pharma Co., Ltd., Kobe KIMEC Center Building 5th Fl., 1-5-2 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Atsushi Tsuchida
- Regenerative and Cellular Medicine Office, Sumitomo Dainippon Pharma Co., Ltd., 13-1 Kyobashi 1-chome, Chuo-ku, Tokyo 104-8356, Japan
| | - Toru Kimura
- Regenerative and Cellular Medicine Office, Sumitomo Dainippon Pharma Co., Ltd., 13-1 Kyobashi 1-chome, Chuo-ku, Tokyo 104-8356, Japan
| | - Jun Takahashi
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Shizu Takeda
- Center for Exploratory Research, Research and Development Group, Hitachi, Ltd., Kobe Center for Medical Innovation Building 201, 6-3-5 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
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Han F, Wang J, Ding L, Hu Y, Li W, Yuan Z, Guo Q, Zhu C, Yu L, Wang H, Zhao Z, Jia L, Li J, Yu Y, Zhang W, Chu G, Chen S, Li B. Tissue Engineering and Regenerative Medicine: Achievements, Future, and Sustainability in Asia. Front Bioeng Biotechnol 2020; 8:83. [PMID: 32266221 PMCID: PMC7105900 DOI: 10.3389/fbioe.2020.00083] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/29/2020] [Indexed: 12/11/2022] Open
Abstract
Exploring innovative solutions to improve the healthcare of the aging and diseased population continues to be a global challenge. Among a number of strategies toward this goal, tissue engineering and regenerative medicine (TERM) has gradually evolved into a promising approach to meet future needs of patients. TERM has recently received increasing attention in Asia, as evidenced by the markedly increased number of researchers, publications, clinical trials, and translational products. This review aims to give a brief overview of TERM development in Asia over the last decade by highlighting some of the important advances in this field and featuring major achievements of representative research groups. The development of novel biomaterials and enabling technologies, identification of new cell sources, and applications of TERM in various tissues are briefly introduced. Finally, the achievement of TERM in Asia, including important publications, representative discoveries, clinical trials, and examples of commercial products will be introduced. Discussion on current limitations and future directions in this hot topic will also be provided.
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Affiliation(s)
- Fengxuan Han
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Jiayuan Wang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Luguang Ding
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Yuanbin Hu
- Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing, China
| | - Wenquan Li
- Department of Otolaryngology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhangqin Yuan
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Qianping Guo
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Caihong Zhu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Li Yu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Huan Wang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Zhongliang Zhao
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Luanluan Jia
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Jiaying Li
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Yingkang Yu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Weidong Zhang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Genglei Chu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Song Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
| | - Bin Li
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
- Orthopaedic Institute, Soochow University, Suzhou, China
- China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, China
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Nishimura A, Nakajima R, Takagi R, Zhou G, Suzuki D, Kiyama M, Nozaki T, Owaki T, Takahara T, Nagai S, Nakamura T, Sugaya M, Terada K, Igarashi Y, Hanzawa H, Okano T, Shimizu T, Yamato M, Takeda S. Fabrication of tissue-engineered cell sheets by automated cell culture equipment. J Tissue Eng Regen Med 2019; 13:2246-2255. [PMID: 31677247 PMCID: PMC6972683 DOI: 10.1002/term.2968] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 09/05/2019] [Accepted: 09/27/2019] [Indexed: 01/02/2023]
Abstract
Most cells for regenerative medicine are currently cultured manually. In order to promote the widespread use of regenerative medicine, it will be necessary to develop automated culture techniques so that cells can be produced in greater quantities at lower cost and with more stable quality. In the field of regenerative medicine technology, cell sheet therapy is an effective tissue engineering technique whereby cells can be grafted by attaching them to a target site. We have developed automated cell culture equipment to promote the use of this cell sheet regenerative treatment. This equipment features a fully closed culture vessel and circuit system that avoids contamination with bacteria and the like from the external environment, and it was designed to allow 10 cell sheets to be simultaneously cultured in parallel. We used this equipment to fabricate 50 sheets of human oral mucosal epithelial cells in five automated culture tests in this trial. By analyzing these sheets, we confirmed that 49 of the 50 sheets satisfied the quality standards of clinical research. To compare the characteristics of automatically fabricated cell sheets with those of manually fabricated cell sheets, we performed histological analyses using immunostaining and transmission electron microscopy. The results confirmed that cell sheets fabricated with the automated cell culture are differentiated in the same way as cultures fabricated manually.
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Affiliation(s)
- Ayako Nishimura
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Ryota Nakajima
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Ryo Takagi
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku-ku, Japan
| | - Guangbin Zhou
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Daisuke Suzuki
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Masaharu Kiyama
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Takayuki Nozaki
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Toshiyuki Owaki
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku-ku, Japan
| | - Tomomi Takahara
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku-ku, Japan
| | - Shigeru Nagai
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku-ku, Japan
| | - Taku Nakamura
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Masakazu Sugaya
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Koichi Terada
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Yumiko Igarashi
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Hiroko Hanzawa
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku-ku, Japan
| | - Tatsuya Shimizu
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku-ku, Japan
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku-ku, Japan
| | - Shizu Takeda
- Research & Development Group
- , Hitachi, Ltd., Hatoyama, Japan
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6
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Mobaraki M, Abbasi R, Omidian Vandchali S, Ghaffari M, Moztarzadeh F, Mozafari M. Corneal Repair and Regeneration: Current Concepts and Future Directions. Front Bioeng Biotechnol 2019; 7:135. [PMID: 31245365 PMCID: PMC6579817 DOI: 10.3389/fbioe.2019.00135] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 05/20/2019] [Indexed: 12/13/2022] Open
Abstract
The cornea is a unique tissue and the most powerful focusing element of the eye, known as a window to the eye. Infectious or non-infectious diseases might cause severe visual impairments that need medical intervention to restore patients' vision. The most prominent characteristics of the cornea are its mechanical strength and transparency, which are indeed the most important criteria considerations when reconstructing the injured cornea. Corneal strength comes from about 200 collagen lamellae which criss-cross the cornea in different directions and comprise nearly 90% of the thickness of the cornea. Regarding corneal transparency, the specific characteristics of the cornea include its immune and angiogenic privilege besides its limbus zone. On the other hand, angiogenic privilege involves several active cascades in which anti-angiogenic factors are produced to compensate for the enhanced production of proangiogenic factors after wound healing. Limbus of the cornea forms a border between the corneal and conjunctival epithelium, and its limbal stem cells (LSCs) are essential in maintenance and repair of the adult cornea through its support of corneal epithelial tissue repair and regeneration. As a result, the main factors which threaten the corneal clarity are inflammatory reactions, neovascularization, and limbal deficiency. In fact, the influx of inflammatory cells causes scar formation and destruction of the limbus zone. Current studies about wound healing treatment focus on corneal characteristics such as the immune response, angiogenesis, and cell signaling. In this review, studied topics related to wound healing and new approaches in cornea regeneration, which are mostly related to the criteria mentioned above, will be discussed.
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Affiliation(s)
- Mohammadmahdi Mobaraki
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Reza Abbasi
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Sajjad Omidian Vandchali
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Maryam Ghaffari
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Fathollah Moztarzadeh
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Masoud Mozafari
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
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Lee Y, Kim MT, Rhodes G, Sack K, Son SJ, Rich CB, Kolachalama VB, Gabel CV, Trinkaus-Randall V. Sustained Ca2+ mobilizations: A quantitative approach to predict their importance in cell-cell communication and wound healing. PLoS One 2019; 14:e0213422. [PMID: 31017899 PMCID: PMC6481807 DOI: 10.1371/journal.pone.0213422] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/11/2019] [Indexed: 01/12/2023] Open
Abstract
Epithelial wound healing requires the coordination of cells to migrate as a unit over the basement membrane after injury. To understand the process of this coordinated movement, it is critical to study the dynamics of cell-cell communication. We developed a method to characterize the injury-induced sustained Ca2+ mobilizations that travel between cells for periods of time up to several hours. These events of communication are concentrated along the wound edge and are reduced in cells further away from the wound. Our goal was to delineate the role and contribution of these sustained mobilizations and using MATLAB analyses, we determined the probability of cell-cell communication events in both in vitro models and ex vivo organ culture models. We demonstrated that the injury response was complex and represented the activation of a number of receptors. In addition, we found that pannexin channels mediated the cell-cell communication and motility. Furthermore, the sustained Ca2+ mobilizations are associated with changes in cell morphology and motility during wound healing. The results demonstrate that both purinoreceptors and pannexins regulate the sustained Ca2+ mobilization necessary for cell-cell communication in wound healing.
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Affiliation(s)
- Yoonjoo Lee
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Min Tae Kim
- Department of Ophthalmology, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Garrett Rhodes
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Kelsey Sack
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America
| | - Sung Jun Son
- Department of Ophthalmology, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Celeste B. Rich
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Vijaya B. Kolachalama
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Christopher V. Gabel
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Vickery Trinkaus-Randall
- Department of Ophthalmology, Boston University School of Medicine, Boston, Massachusetts, United States of America
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, United States of America
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8
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Matsumoto E, Koide N, Hanzawa H, Kiyama M, Ohta M, Kuwabara J, Takeda S, Takahashi M. Fabricating retinal pigment epithelial cell sheets derived from human induced pluripotent stem cells in an automated closed culture system for regenerative medicine. PLoS One 2019; 14:e0212369. [PMID: 30865653 PMCID: PMC6415881 DOI: 10.1371/journal.pone.0212369] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/31/2019] [Indexed: 12/24/2022] Open
Abstract
Regenerative medicine has received a lot of attention as a novel strategy for injuries and diseases that are difficult to cure using current techniques. Cell production, which is vital for regenerative medicine, has undergone remarkable progress via breakthroughs in developmental biology and tissue engineering; currently, cell production requires numerous experimental operators performing manual, small-scale cell cultures. Other major obstacles for cell production and regenerative medicine include the variable quality of products based on the experimental procedure, the skills of operators, the level of labor required for production, and costs. Technological developments are required to overcome this, including automation instead of manual culture. Age-related macular regeneration (AMD) is a refractory ocular disease that causes severe deterioration in central vision due to senescence in the retinal pigment epithelium (RPE). Recently, we performed an autologous transplantation of induced pluripotent stem (iPS) cell-derived RPE cell sheets and started clinical research on allografts from RPE cell suspensions differentiated from iPS cells. The use of regenerative therapies for AMD using iPS cell-derived RPE is expected to become more widespread. In the present study, human iPS cell-derived RPE cells were cultured to form RPE cell sheets using equipment with a closed culture module. The quality of the automated cultured RPE cell sheets was confirmed by comparing their morphological and biological properties with those of manually generated RPE cell sheets. As a result, machine-cultured RPE sheets displayed the same quality as manually cultured RPE sheets, showing that iPS cell-derived RPE cell sheets were successfully cultured by an automated process.
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Affiliation(s)
- Erino Matsumoto
- Center for Exploratory Research, Research & Development Group, Hitachi, Ltd., Kobe, Hyogo, Japan
| | - Naoshi Koide
- Laboratory for Retinal Regeneration, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Hiroko Hanzawa
- Center for Exploratory Research, Research & Development Group, Hitachi, Ltd., Kobe, Hyogo, Japan
| | - Masaharu Kiyama
- Center for Exploratory Research, Research & Development Group, Hitachi, Ltd., Kobe, Hyogo, Japan
| | - Mari Ohta
- Center for Exploratory Research, Research & Development Group, Hitachi, Ltd., Kobe, Hyogo, Japan
| | - Junichi Kuwabara
- Planning and Development Division, Sanplatec Co., Ltd., Osaka, Japan
| | - Shizu Takeda
- Center for Exploratory Research, Research & Development Group, Hitachi, Ltd., Kobe, Hyogo, Japan
| | - Masayo Takahashi
- Laboratory for Retinal Regeneration, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
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9
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Nakashima Y, Kounoura M, Malasuk C, Nakakubo K, Watanabe N, Iwata S, Morita K, Oki Y, Kuhara S, Tashiro K, Nakanishi Y. Continuous cell culture monitoring using a compact microplate reader with a silicone optical technology-based spatial filter. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:035106. [PMID: 30927768 DOI: 10.1063/1.5054824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 02/23/2019] [Indexed: 06/09/2023]
Abstract
Continuous cell monitoring is very important for the maintenance and control of cell multiplication and differentiation. This paper presents a compact microplate reader that is able to continuously measure a 24-well microplate (6 × 4 wells) using the optical absorption measurement method. The 24-channel plate reader consisted of a spatial filter, light emitting diode light source, and color sensors and was similarly sized with the cell culture microwell plates. A spatial filter was previously fabricated by our group using silicone optical technology (SOT). This SOT-based spatial filter has an excellent noise reduction effect. Light reflection at the optical path interface can be absorbed and only forward light can be transmitted; accordingly, a larger S/N ratio than that of conventional optical systems is expected. The fabricated 24-channel plate reader permits real-time cell monitoring during cultivation on the clean bench and in cell culture conditions by incorporating the SOT spatial filter. Using the device, it was possible to continuously evaluate the concentration and pH of reagents in the 24 wells in real time. Moreover, cell activity and protein production were detectable using the device. These results suggest that the newly fabricated device is a promising tool for the evaluation of cell behaviors for cell management.
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Affiliation(s)
- Y Nakashima
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 096-8555, Japan
| | - M Kounoura
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 096-8555, Japan
| | - C Malasuk
- Department of I&E Visionaries, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - K Nakakubo
- Department of I&E Visionaries, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - N Watanabe
- Graduate School of Bioresource and Bioenvironmental Science, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - S Iwata
- Graduate School of Bioresource and Bioenvironmental Science, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - K Morita
- Department of I&E Visionaries, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Y Oki
- Department of I&E Visionaries, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - S Kuhara
- Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 812-8581, Japan
| | - K Tashiro
- Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 812-8581, Japan
| | - Y Nakanishi
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 096-8555, Japan
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Nakajima R, Takeda S. Efficient fabrication of epidermal cell sheets using γ-secretase inhibitor. J Dermatol Sci 2014; 76:246-54. [PMID: 25445926 DOI: 10.1016/j.jdermsci.2014.09.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 08/28/2014] [Accepted: 09/11/2014] [Indexed: 01/15/2023]
Abstract
BACKGROUND Epidermal cell sheets have been utilized for regeneration of skin when skin defects occur and prevention of esophageal stricture after endoscopic submucosal dissection. To reduce the cost of cultivation, a novel culture method to shorten a culture process needs to be developed. OBJECTIVES To shorten a culture process of epidermal cell sheets, we developed a novel culture method to accelerate the fabrication of epidermal cell sheets using γ-secretase inhibitor. METHODS Normal human epidermal keratinocytes (NHEKs) were cultured using γ-secretase inhibitor, DAPT, during expansion of the cells to confluence and culture without DAPT during stratification. The cell growth, quantitative gene expression of stem/progenitor or differentiation markers, and protein expression of these markers were analyzed to verify the effectiveness of the novel method. RESULTS The proliferation of NHEKs on cell-culture inserts was promoted using DAPT. However, NHEKs were not stratified completely in the presence of DAPT. In contrast, NHEKs cultured using DAPT were stratified and differentiated by eliminating the inhibitor after the cells reached confluence. Real-time PCR analyses showed that the gene expressions of putative epithelial stem/progenitor cell markers and epidermis differentiation markers in the cell sheets fabricated using this novel method were significantly higher than those in the cell sheets fabricated without DAPT. Histological and immunofluorescence analyses revealed that it was possible to fabricate well-differentiated epidermal cell sheets efficiently by the novel culture method. The culture period was shortened to 67% of the time required for the control group. In feeder-free conditions, stratified epidermal cell sheets were also fabricated using DAPT. CONCLUSIONS The novel culture method using γ-secretase inhibitor, DAPT, was found to be effective for fabricating epidermal cell sheets.
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Affiliation(s)
- Ryota Nakajima
- Central Research Laboratory, Hitachi Ltd., 2520 Hatoyama, Saitama 350-0395, Japan.
| | - Shizu Takeda
- Central Research Laboratory, Hitachi Ltd., 2520 Hatoyama, Saitama 350-0395, Japan.
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11
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Corneal regeneration by transplantation of corneal epithelial cell sheets fabricated with automated cell culture system in rabbit model. Biomaterials 2013; 34:9010-7. [DOI: 10.1016/j.biomaterials.2013.07.065] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 07/19/2013] [Indexed: 11/23/2022]
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Nakajima R, Takeda S. The efficient fabrication of corneal epithelial cell sheets by controlling oxygen concentration. Exp Eye Res 2013; 116:434-8. [DOI: 10.1016/j.exer.2013.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 06/10/2013] [Accepted: 07/09/2013] [Indexed: 10/26/2022]
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Fabrication of corneal epithelial cell sheets maintaining colony-forming cells without feeder cells by oxygen-controlled method. Exp Eye Res 2013; 118:53-60. [PMID: 24184720 DOI: 10.1016/j.exer.2013.10.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 09/11/2013] [Accepted: 10/19/2013] [Indexed: 01/28/2023]
Abstract
The use of murine 3T3 feeder cells needs to be avoided when fabricating corneal epithelial cell sheets for use in treating ocular surface diseases. However, the expression level of the epithelial stem/progenitor cell marker, p63, is down-regulated in feeder-free culture systems. In this study, in order to fabricate corneal epithelial cell sheets that maintain colony-forming cells without using any feeder cells, we investigated the use of an oxygen-controlled method that was developed previously to fabricate cell sheets efficiently. Rabbit limbal epithelial cells were cultured under hypoxia (1-10% O2) and under normoxia during stratification after reaching confluence. Multilayered corneal epithelial cell sheets were fabricated using an oxygen-controlled method, and immunofluorescence analysis showed that cytokeratin 3 and p63 was expressed in appropriate localization in the cell sheets. The colony-forming efficiency of the cell sheets fabricated by the oxygen-controlled method without feeder cells was significantly higher than that of cell sheets fabricated under 20% O2 without feeder cells. These results indicate that the oxygen-controlled method has the potential to achieve a feeder-free culture system for fabricating corneal epithelial cell sheets for corneal regeneration.
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Nakajima R, Kobayashi T, Kikuchi T, Kitano Y, Watanabe H, Mizutani M, Nozaki T, Senda N, Saitoh K, Takagi R, Yamato M, Okano T, Takeda S. Fabrication of transplantable corneal epithelial and oral mucosal epithelial cell sheets using a novel temperature-responsive closed culture device. J Tissue Eng Regen Med 2013; 9:637-40. [DOI: 10.1002/term.1728] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 10/22/2012] [Accepted: 01/24/2013] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Naoko Senda
- Central Research Laboratory; Hitachi Ltd; Saitama Japan
| | - Kazuo Saitoh
- Central Research Laboratory; Hitachi Ltd; Saitama Japan
| | - Ryo Takagi
- Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University; Tokyo Japan
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University; Tokyo Japan
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University; Tokyo Japan
| | - Shizu Takeda
- Central Research Laboratory; Hitachi Ltd; Saitama Japan
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