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Imashiro C, Morikura T, Hayama M, Ezura A, Komotori J, Miyata S, Sakaguchi K, Shimizu T. Metallic Vessel with Mesh Culture Surface Fabricated Using Three-dimensional Printing Engineers Tissue Culture Environment. BIOTECHNOL BIOPROC E 2023. [DOI: 10.1007/s12257-022-0227-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Nishi R, Oda Y, Morikura T, Miyata S. Effect of Compressive Stress in Tumor Microenvironment on Malignant Tumor Spheroid Invasion Process. Int J Mol Sci 2022; 23:ijms23137091. [PMID: 35806095 PMCID: PMC9266885 DOI: 10.3390/ijms23137091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 06/23/2022] [Indexed: 11/21/2022] Open
Abstract
In this study, we proposed an in vitro tumor model to simulate the mechanical microenvironment and investigate the effect of compressive stress on the invasion process of malignant tumors. It has been pointed out that the biomechanical environment, as well as the biochemical environment, could affect the transformation of cancer cell migration, invasion, and metastasis. We hypothesized that the solid stress caused by the exclusion of surrounding tissue could transform tumor cells from noninvasive to invasive phenotypes. Colorectal cell spheroids were embedded and cultured in agarose gels of varying concentrations to simulate the earliest stages of tumor formation and invasion. The spheroids embedded in gels at higher concentrations showed peculiar growth after 72 h of culture, and the external compressive loading imposed on them caused peculiar growth even in the gels at lower concentrations. In conclusion, the mechanical microenvironment caused the transformation of tumor cell phenotypes, promoting the growth and invasion of tumor cell spheroids.
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Affiliation(s)
- Ryota Nishi
- Graduate School of Science and Technology, Keio University, Yokohama 223-8522, Japan; (R.N.); (T.M.)
| | - Yudai Oda
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan;
| | - Takashi Morikura
- Graduate School of Science and Technology, Keio University, Yokohama 223-8522, Japan; (R.N.); (T.M.)
| | - Shogo Miyata
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan;
- Correspondence:
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Imashiro C, Takeshita H, Morikura T, Miyata S, Takemura K, Komotori J. Development of accurate temperature regulation culture system with metallic culture vessel demonstrates different thermal cytotoxicity in cancer and normal cells. Sci Rep 2021; 11:21466. [PMID: 34728686 PMCID: PMC8563756 DOI: 10.1038/s41598-021-00908-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 10/18/2021] [Indexed: 12/24/2022] Open
Abstract
Hyperthermia has been studied as a noninvasive cancer treatment. Cancer cells show stronger thermal cytotoxicity than normal cells, which is exploited in hyperthermia. However, the absence of methods evaluating the thermal cytotoxicity in cells prevents the development of hyperthermia. To investigate the thermal cytotoxicity, culture temperature should be regulated. We, thus, developed a culture system regulating culture temperature immediately and accurately by employing metallic culture vessels. Michigan Cancer Foundation-7 cells and normal human dermal fibroblasts were used for models of cancer and normal cells. The findings showed cancer cells showed stronger thermal cytotoxicity than normal cells, which is quantitatively different from previous reports. This difference might be due to regulated culture temperature. The thermal stimulus condition (43 °C/30 min) was, further, focused for assays. The mRNA expression involving apoptosis changed dramatically in cancer cells, indicating the strong apoptotic trend. In contrast, the mRNA expression of heat shock protein (HSP) of normal cells upon the thermal stimulus was stronger than cancer cells. Furthermore, exclusively in normal cells, HSP localization to nucleus was confirmed. These movement of HSP confer thermotolerance to cells, which is consistent with the different thermal cytotoxicity between cancer and normal cells. In summary, our developed system can be used to develop hyperthermia treatment.
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Affiliation(s)
- Chikahiro Imashiro
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, 162-8666, Japan.
- Department of Mechanical Engineering, Keio University, Yokohama, 223-8522, Japan.
| | - Haruka Takeshita
- Department of Mechanical Engineering, Keio University, Yokohama, 223-8522, Japan
| | - Takashi Morikura
- Department of Mechanical Engineering, Keio University, Yokohama, 223-8522, Japan
| | - Shogo Miyata
- Department of Mechanical Engineering, Keio University, Yokohama, 223-8522, Japan
| | - Kenjiro Takemura
- Department of Mechanical Engineering, Keio University, Yokohama, 223-8522, Japan
| | - Jun Komotori
- Department of Mechanical Engineering, Keio University, Yokohama, 223-8522, Japan.
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Imashiro C, Hirano M, Morikura T, Fukuma Y, Ohnuma K, Kurashina Y, Miyata S, Takemura K. Detachment of cell sheets from clinically ubiquitous cell culture vessels by ultrasonic vibration. Sci Rep 2020; 10:9468. [PMID: 32528073 PMCID: PMC7289836 DOI: 10.1038/s41598-020-66375-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 05/20/2020] [Indexed: 01/09/2023] Open
Abstract
Proteinases that digest the extracellular matrix are usually used to harvest cells from culture vessels in a general culture process, which lowers the initial adhesion rate in regenerative medicine. Cell sheet engineering is one of the most important technologies in this field, especially for transplantation, because fabricated cell sheets have rich extracellular matrixes providing strong initial adhesion. Current cell sheet fabrication relies on temperature-responsive polymer-coated dishes. Cells are cultured on such specialized dishes and subjected to low temperature. Thus, we developed a simple but versatile cell sheet fabrication method using ubiquitous culture dishes/flasks without any coating or temperature modulation. Confluent mouse myoblasts (C2C12 cell line) were exposed to ultrasonic vibration from underneath and detached as cell sheets from entire culture surfaces. Because of the absence of low temperature, cell metabolism was statically increased compared with the conventional method. Furthermore, viability, morphology, protein expression, and mRNA expression were normal. These analyses indicated no side effects of ultrasonic vibration exposure. Therefore, this novel method may become the standard for cell sheet fabrication. Our method can be easily conducted following a general culture procedure with a typical dish/flask, making cell sheets more accessible to medical experts.
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Affiliation(s)
- Chikahiro Imashiro
- Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.,Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, TWIns, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, Japan
| | - Makoto Hirano
- Department of Pharmacy, Yasuda Women's University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima, Japan
| | - Takashi Morikura
- School of Science for Open and Environmental Systems, Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Yuki Fukuma
- School of Science for Open and Environmental Systems, Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Kiyoshi Ohnuma
- Department of Bioengineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata, 940-2188, Japan.,Department of Science of Technology Innovation, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka, Niigata, 940-2188, Japan
| | - Yuta Kurashina
- Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.,Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Shogo Miyata
- Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Kenjiro Takemura
- Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
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Morikura T, Miyata S. Effect of Mechanical Compression on Invasion Process of Malignant Melanoma Using In Vitro Three-Dimensional Cell Culture Device. Micromachines (Basel) 2019; 10:mi10100666. [PMID: 31575066 PMCID: PMC6843826 DOI: 10.3390/mi10100666] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 09/27/2019] [Accepted: 09/28/2019] [Indexed: 12/15/2022]
Abstract
Malignant melanoma in the plantar surface of the foot is subjected to various mechanical stimuli generated by daily human activity such as walking. Some studies have reported that mechanical compression affects the development and progression of melanoma. However, little is known about how mechanical compression affects the behavior of malignant melanoma cells in a physiological condition due to the complexity of the invasion mechanisms. In this study, we developed an in vitro three-dimensional cell culture device using microporous membrane in order to evaluate the effects of mechanical compression on the invasion process of malignant melanoma. Our results suggest that the invasion of melanoma cells under the compressive stress for 8 h of culture was promoted with the elongation of F-actin filaments compared to control groups, whereas there was no significant difference between both groups at 32 h of culture, with increasing cell death associated with promoting melanin synthesis. The results of this study contribute to the elucidation of the invasion mechanisms of malignant melanoma caused by mechanical stimulation.
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Affiliation(s)
- Takashi Morikura
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
| | - Shogo Miyata
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
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Bansai S, Morikura T, Onoe H, Miyata S. Effect of Cyclic Stretch on Tissue Maturation in Myoblast-Laden Hydrogel Fibers. Micromachines (Basel) 2019; 10:mi10060399. [PMID: 31208059 PMCID: PMC6630375 DOI: 10.3390/mi10060399] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/09/2019] [Accepted: 06/13/2019] [Indexed: 11/16/2022]
Abstract
Engineering of the skeletal muscles has attracted attention for the restoration of damaged muscles from myopathy, injury, and extraction of malignant tumors. Reconstructing a three-dimensional muscle using living cells could be a promising approach. However, the regenerated tissue exhibits a weak construction force due to the insufficient tissue maturation. The purpose of this study is to establish the reconstruction system for the skeletal muscle. We used a cell-laden core-shell hydrogel microfiber as a three-dimensional culture to control the cellular orientation. Moreover, to mature the muscle tissue in the microfiber, we also developed a custom-made culture device for imposing cyclic stretch stimulation using a motorized stage and the fiber-grab system. As a result, the directions of the myotubes were oriented and the mature myotubes could be formed by cyclic stretch stimulation.
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Affiliation(s)
- Shinako Bansai
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
| | - Takashi Morikura
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
| | - Hiroaki Onoe
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
| | - Shogo Miyata
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
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