1
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Horiguchi I, Nagate H, Sakai Y. Particle-tracking-based strategy for the optimization of agitation conditions in a suspension culture of human induced pluripotent stem cells in a shaking vessel. J Biosci Bioeng 2023; 135:411-416. [PMID: 36925357 DOI: 10.1016/j.jbiosc.2023.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/09/2023] [Accepted: 02/24/2023] [Indexed: 03/16/2023]
Abstract
Suspension cultures are widely used for cell expansion in regenerative medicine and production. Shaking culture is one of the useful suspension culture methods that ensures gentle agitation. There are other shaking methods, including orbital shaking, reciprocating, and rocking; however, optimizing the shaking conditions for each method to meet cell culture requirements is time-consuming. In this study, we used a particle-tracking-based strategy for optimizing the agitation conditions. When the average accelerations of aggregates were calculated, high acceleration occurred periodically, and acceleration of the aggregates in orbital shaking was stable. Furthermore, the number of dead cells correlated with the average time of acceleration. We observed that cell growth was ideally maintained by factors such as optimal acceleration, aggregate formation, and cell death. These results indicate that the image-based analyses of aggregates help optimize the agitation conditions for the shaking suspension culture of induced pluripotent stem cells (iPSCs).
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Affiliation(s)
- Ikki Horiguchi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan.
| | - Hotaka Nagate
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yasuyuki Sakai
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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2
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Tsuchiya A, Terai S, Horiguchi I, Homma Y, Saito A, Nakamura N, Sato Y, Ochiya T, Kino-oka M. Basic points to consider regarding the preparation of extracellular vesicles and their clinical applications in Japan. Regen Ther 2022; 21:19-24. [PMID: 35619946 PMCID: PMC9127121 DOI: 10.1016/j.reth.2022.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 04/03/2022] [Revised: 05/02/2022] [Accepted: 05/04/2022] [Indexed: 12/23/2022] Open
Abstract
In recent years, extracellular vesicles (EVs)1 have attracted attention as a new therapeutic tool. In Europe, the United States, and Asia, there is an accelerating trend of moving beyond basic research on clinical trials. However, treatment using EVs is still in the research and development stage, and the general public has insufficient awareness and understanding of the risks involved in ensuring safety and efficacy, the status of laws and regulations, and global research and development trends regarding their use. The Japanese Society for Regenerative Medicine, which has promoted the research and development of regenerative medicine, an innovative medical technology based on the principle of delivering it safely, effectively, and promptly, including the establishment of laws and regulations, would like to express two positions in light of the rapid development of therapies using EVs: 1) concern about treatments that are based solely on the discretion of medical practitioners, and 2) active promotion of treatments based on sound scientific evidence. Because EVs are released from cells, there are many similarities between EVs and processed cells2 in terms of manufacturing processes and safety hazards. As for efficacy, the mechanism of action of EVs is still unclear, as is the case with specified processed cellsb; in such cases, it is difficult to measure potency, identify efficacy-related quality attributes, and evaluate the comparability of quality before and after a change in the manufacturing process. In other words, the number of quality attributes that can be obtained for EVs is limited because of their complex characteristics, and it is difficult to grasp their quality through specifications and characterization. Therefore, while designing a quality control strategy for EVs, it is important to ensure the quality of the final product (EVs) by controlling the raw materials and manufacturing process. On the contrary, since EVs do not contain living cell components and are not classified into specified processed cells, non-commercial clinical research on treatments using EVs and individual medical treatments with EVs at the discretion of medical practitioners are out of the scope of the Act on the Safety of Regenerative Medicine of Japan3. At present, there are no relevant laws or regulations for the use of EVs other than the Medical Practitioners’ Act and the Medical Care Act in Japan. Therefore, there is a concern that treatment will be performed without sufficient objective evaluation of the scientific basis for safety and efficacy. Despite these concerns, the development of therapies using EVs is underway worldwide. This could potentially lead to a wide variety of new therapeutic areas if the methods needed to stably secure and mass cultivate cells as raw materials and the technologies needed for the mass production of EVs can be developed, in addition to understanding the risks involved and developing relevant laws and regulations. As part of the Japanese Society for Regenerative Medicine, we will continue to work on the development of these methods and technologies and hope that such a promising field will be promoted with a high level of safety before reaching the public.
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Affiliation(s)
- Atsunori Tsuchiya
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Corresponding author. Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757, Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
| | - Ikki Horiguchi
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Yasuhiro Homma
- Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Atsuhiro Saito
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Norimasa Nakamura
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
- Institute for Medical Science in Sports, Osaka Health Science University, Osaka, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, Osaka, Japan
| | - Yoji Sato
- Division of Cell-Based Therapeutic Products, National Institute of Health Sciences, Kawasaki, Japan
| | - Takahiro Ochiya
- Department of Molecular and Cellular Medicine, Tokyo Medical University, Tokyo, Japan
| | - Masahiro Kino-oka
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Osaka, Japan
- Corresponding author. Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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3
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Ishibashi Y, Hagiwara S, Shimura A, Horiguchi I, Komada Y. Association between school start time affected by extracurricular activities and sleep duration: national questionary survey in Japan. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.192] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Nair A, Horiguchi I, Fukumori K, Kino-oka M. Development of instability analysis for the filling process of human-induced pluripotent stem cell products. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108506] [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: 11/02/2022]
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5
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Torizal FG, Kim SM, Horiguchi I, Inamura K, Suzuki I, Morimura T, Nishikawa M, Sakai Y. Production of homogenous size-controlled human induced pluripotent stem cell aggregates using ring-shaped culture vessel. J Tissue Eng Regen Med 2021; 16:254-266. [PMID: 34923748 DOI: 10.1002/term.3278] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 10/23/2021] [Accepted: 12/16/2021] [Indexed: 01/01/2023]
Abstract
Aggregate size is an important parameter that determines the cell fate and quality of the resulting human-induced pluripotent stem cells (hiPSCs). Nowadays, large-scale suspension culture is a common method for scaling-up the biomanufacturing of hiPSCs to realize their practical application. However, this culture system exhibits a complex hydrodynamic condition resulting from the different mixing conditions of culture media, which potentially produce non-uniform aggregates, which may decrease the quality of the cell yield. Here, we performed expansion in a ring-shaped culture vessel and compared it with three other suspension-based culture systems to evaluate the uniformity and characteristics of hiPSC aggregates. Morphologically, the hiPSC aggregates formed and expanded in the ring-shaped culture vessel, resulting in small and uniform aggregates compared to the other culture systems. This aggregate population showed a decent mass transfer required for the exchange of biochemical substances, such as nutrients, growth factors, oxygen, and waste metabolic products, inside the aggregates. Thus, better metabolic performance and pluripotency markers were achieved in this system. Interestingly, all culture systems used in this study showed different tendencies in embryoid body differentiation. The smaller aggregates produced by sphere ring and dish bag tended to differentiate toward ectodermal and mesodermal lineages, while predominantly larger aggregates from the 6-well plates and spinner flask exhibited more potential for endodermal lineage. Our study demonstrates the production of a decent homogenous aggregate population by providing equal hydrodynamic force through the ring-shaped culture vessel design, which may be further upscaled to produce a large number of hiPSCs for clinical applications.
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Affiliation(s)
- Fuad Gandhi Torizal
- Department of Chemical Systems Engineering, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Japan.,Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
| | - Seong Min Kim
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
| | - Ikki Horiguchi
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Kousuke Inamura
- Department of Chemical Systems Engineering, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
| | - Ikumi Suzuki
- Division of Biotechnology Industrial Equipments, Fukoku Ltd, Saitama, Japan
| | - Takashi Morimura
- Division of Biotechnology Industrial Equipments, Fukoku Ltd, Saitama, Japan
| | - Masaki Nishikawa
- Department of Chemical Systems Engineering, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
| | - Yasuyuki Sakai
- Department of Chemical Systems Engineering, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Japan.,Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Japan
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6
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Torizal FG, Lau QY, Ibuki M, Kawai Y, Horikawa M, Minami M, Michiue T, Horiguchi I, Nishikawa M, Sakai Y. A miniature dialysis-culture device allows high-density human-induced pluripotent stem cells expansion from growth factor accumulation. Commun Biol 2021; 4:1316. [PMID: 34799690 PMCID: PMC8604949 DOI: 10.1038/s42003-021-02848-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 11/04/2021] [Indexed: 11/16/2022] Open
Abstract
Three-dimensional aggregate-suspension culture is a potential biomanufacturing method to produce a large number of human induced pluripotent stem cells (hiPSCs); however, the use of expensive growth factors and method-induced mechanical stress potentially result in inefficient production costs and difficulties in preserving pluripotency, respectively. Here, we developed a simple, miniaturized, dual-compartment dialysis-culture device based on a conventional membrane-culture insert with deep well plates. The device improved cell expansion up to approximately ~3.2 to 4×107 cells/mL. The high-density expansion was supported by reduction of excessive shear stress and agglomeration mediated by the addition of the functional polymer FP003. The results revealed accumulation of several growth factors, including fibroblast growth factor 2 and insulin, along with endogenous Nodal, which acts as a substitute for depleted transforming growth factor-β1 in maintaining pluripotency. Because we used the same growth-factor formulation per volume in the upper culture compartment, the cost reduced in inverse proportional manner with the cell density. We showed that growth-factor-accumulation dynamics in a low-shear-stress environment successfully improved hiPSC proliferation, pluripotency, and differentiation potential. This miniaturised dialysis-culture system demonstrated the feasibility of cost-effective mass production of hiPSCs in high-density culture.
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Affiliation(s)
- Fuad Gandhi Torizal
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan. .,Department of Chemical Systems Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.
| | - Qiao You Lau
- grid.26999.3d0000 0001 2151 536XDepartment of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Masato Ibuki
- grid.410860.b0000 0000 9776 0030Regenerative Medicine and Cell Therapy Laboratories, Kaneka Corporation, Kobe, Japan
| | - Yoshikazu Kawai
- grid.410860.b0000 0000 9776 0030Regenerative Medicine and Cell Therapy Laboratories, Kaneka Corporation, Kobe, Japan
| | - Masato Horikawa
- grid.420062.20000 0004 1763 4894Materials Research Laboratories, Nissan Chemical Corporation, Saitama, Japan
| | - Masataka Minami
- grid.420062.20000 0004 1763 4894Materials Research Laboratories, Nissan Chemical Corporation, Saitama, Japan
| | - Tatsuo Michiue
- grid.26999.3d0000 0001 2151 536XDepartment of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Ikki Horiguchi
- grid.136593.b0000 0004 0373 3971Department of Biotechnology, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Masaki Nishikawa
- grid.26999.3d0000 0001 2151 536XDepartment of Chemical Systems Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yasuyuki Sakai
- grid.26999.3d0000 0001 2151 536XDepartment of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan ,grid.26999.3d0000 0001 2151 536XDepartment of Chemical Systems Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
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7
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Nair A, Horiguchi I, Fukumori K, Kino-oka M. Suggestion and variation analysis of quality attributes in filling process of human-induced pluripotent stem cells. Cytotherapy 2021. [DOI: 10.1016/s1465324921006216] [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: 10/21/2022]
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8
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Horiguchi I, Torizal FG, Nagate H, Inose H, Inamura K, Hirata O, Hayashi H, Horikawa M, Sakai Y. Protection of human induced pluripotent stem cells against shear stress in suspension culture by Bingham plastic fluid. Biotechnol Prog 2020; 37:e3100. [PMID: 33169533 PMCID: PMC8244041 DOI: 10.1002/btpr.3100] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/17/2020] [Accepted: 11/04/2020] [Indexed: 12/14/2022]
Abstract
Suspension culture is an important method used in the industrial preparation of pluripotent stem cells (PSCs), for regenerative therapy and drug screening. Generally, a suspension culture requires agitation to keep PSC aggregates suspended and to promote mass transfer, but agitation also causes cell damage. In this study, we investigated the use of a Bingham plastic fluid, supplemented with a polysaccharide‐based polymer, to preserve PSCs from cell damage in suspension culture. Rheometric analysis showed that the culture medium gained yield stress and became a Bingham plastic fluid, after supplementation with the polymer FP003. A growth/death analysis revealed that 2 days of aggregate formation and 2 days of suspension in the Bingham plastic medium improved cell growth and prevented cell death. After the initial aggregation step, whereas strong agitation (120 rpm) of a conventional culture medium resulted in massive cell death, in the Bingham plastic fluid we obtained the same growth as the normal culture with optimal agitation (90 rpm). This indicates that Bingham plastic fluid protected cells from shear stress in suspension culture and could be used to enhance their robustness when developing a large‐scale.
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Affiliation(s)
- Ikki Horiguchi
- Department of Biotechnology, Osaka University, Osaka, Japan
| | - Fuad Gandhi Torizal
- Department of Chemical System Engineering, The University of Tokyo, Tokyo, Japan
| | - Hotaka Nagate
- Department of Chemical System Engineering, The University of Tokyo, Tokyo, Japan
| | - Haruka Inose
- Department of Chemical System Engineering, The University of Tokyo, Tokyo, Japan
| | - Kousuke Inamura
- Department of Chemical System Engineering, The University of Tokyo, Tokyo, Japan
| | | | | | | | - Yasuyuki Sakai
- Department of Chemical System Engineering, The University of Tokyo, Tokyo, Japan
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9
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Sugiyama H, Shiokaramatsu M, Kagihiro M, Fukumori K, Horiguchi I, Kino‐oka M. Cover Image. J Tissue Eng Regen Med 2020. [DOI: 10.1002/term.3147] [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: 11/08/2022]
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10
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Sugiyama H, Shiokaramatsu M, Kagihiro M, Fukumori K, Horiguchi I, Kino-Oka M. Apoptosis-based method for determining lot sizes in the filling of human-induced pluripotent stem cells. J Tissue Eng Regen Med 2020; 14:1641-1651. [PMID: 32886861 DOI: 10.1002/term.3127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 07/06/2020] [Accepted: 08/26/2020] [Indexed: 11/05/2022]
Abstract
Standardization in process design and operation is needed in the commercial production of human-induced pluripotent stem (hiPS) cells. Lot sizing in the filling of hiPS cells into containers, a part of the preservation process, also needs to be standardized because of the temporal changes in cell quality during the process. Here, we present an apoptosis-based method that can determine lot sizes in the filling of hiPS cells considering temporal changes in cell quality. Two indicators were developed for (i) the cell quality change using reactive oxygen species (ROS) measurement and (ii) the cell survival and probability of filling success, which are parts of the lot-sizing problem. Using computational simulation, a map out of the optimal lot size was produced that minimized the expected production costs at a given cell demand and an acceptable change in cell quality. At a filling temperature of 4°C, the largest possible lot size was calculated as 6 L (corresponding to a filling time of 125 min). The results of a sensitivity analysis recommended cold filling or the addition of an antioxidant. The presented method is effective to determine the lot size considering the change in cell quality during filling. The study uniquely combines the experimental results with mathematical modeling and computational simulation techniques. The map out of the optimal lot size could guide the development of industrial filling processes of hiPS cells.
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Affiliation(s)
- Hirokazu Sugiyama
- Department of Chemical System Engineering, The University of Tokyo, Tokyo, Japan
| | - Masaki Shiokaramatsu
- Department of Chemical System Engineering, The University of Tokyo, Tokyo, Japan
| | | | | | - Ikki Horiguchi
- Department of Biotechnology, Osaka University, Suita, Japan
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11
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Kagihiro M, Fukumori K, Horiguchi I, Kim MH, Kino-oka M. Suppression of time-dependent decay by controlling the redox balance of human induced pluripotent stem cells suspended in a cryopreservation solution. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2019.107465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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Pang Y, Sutoko S, Wang Z, Horimoto Y, Montagne K, Horiguchi I, Shinohara M, Danoy M, Niino T, Sakai Y. Organization of liver organoids using Raschig ring-like micro-scaffolds and triple co-culture: Toward modular assembly-based scalable liver tissue engineering. Med Eng Phys 2019; 76:69-78. [PMID: 31883633 DOI: 10.1016/j.medengphy.2019.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 10/16/2019] [Accepted: 10/20/2019] [Indexed: 12/26/2022]
Abstract
In order to address the remaining issues of fragile structure and insufficient mass transfer faced in modular assembly-based liver tissue engineering, a Raschig ring-like hollowed micro-scaffold was proposed and fabricated using poly-ε-caprolactone with 60% porosity and 11.4 mm2 effective surface area for cell immobilization. The method of cell inoculation, the types of cells for co-culture and the scalability of the proposed hollowed micro-scaffold in perfusion were all investigated to obtain an optimized organoid made of tissue modules. Extracellular matrix was found necessary to establish a hierarchical co-culture, and the triple co-culture of Human Hepatoma Hep G2 cells, liver sinusoid cell line TMNK-1 cells and fibroblasts (Swiss 3T3 cells) was recognized to be the most efficient to obtain higher cell attachment, proliferation and hepatic function. The equipped intersecting hollow channels provided in the micro-scaffold functioned as flow paths to promote mass transfer to the immobilized cells after the modules have been randomly packed into a bioreactor for perfusion culture, and resulted in enhanced albumin production and high cellular viability. Cell density comparable to those found in vivo were obtained in the perfused construct, which also maintained its rigid structure. Those results suggest that modular tissues made with hollowed micro-scaffold-based organoids hold great potential for scaling up tissue engineered constructs towards implantation.
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Affiliation(s)
- Yuan Pang
- Biomanufacturing Center, Department of Mechanical Engineering, Tsinghua University, Room A730, Lee Shau Kee science and Technology Building Haidian District, Beijing 100084, China; Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, Beijing 100084, China.
| | - Stephanie Sutoko
- Institute of Industrial Science, University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8505, Japan
| | - Zitong Wang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Haidian District, Beijing 100084, China
| | - Yohei Horimoto
- Graduate School of Engineering, Shibaura Institute of Technology, Shibaura 3-9-14, Minato-ku, Tokyo 108-8548, Japan
| | - Kevin Montagne
- Department of Mechanical Engineering, Graduate School of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-033, Japan
| | - Ikki Horiguchi
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Japan
| | - Marie Shinohara
- Institute of Industrial Science, University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8505, Japan
| | - Mathieu Danoy
- Department of Chemical System Engineering, Graduate School of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-033, Japan
| | - Toshiki Niino
- Institute of Industrial Science, University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8505, Japan
| | - Yasuyuki Sakai
- Department of Chemical System Engineering, Graduate School of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-033, Japan
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13
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Torizal FG, Kimura K, Horiguchi I, Sakai Y. Size-dependent hepatic differentiation of human induced pluripotent stem cells spheroid in suspension culture. Regen Ther 2019; 12:66-73. [PMID: 31890768 PMCID: PMC6933468 DOI: 10.1016/j.reth.2019.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 03/05/2019] [Accepted: 04/18/2019] [Indexed: 01/07/2023] Open
Abstract
Suspension culture of three-dimensional (3D) spheroid of human induced pluripotent stem cells (hiPSCs) has been known as a potential method to enhance the scalability of hepatic differentiation of hiPSCs. However, the impact of size-related factor of initial formed spheroid were not largely considered. To address this problem, we evaluate the impact of different specific spheroid size of hiPSCs by forming the individual spheroid from different number of hiPSCs and differentiated into hiPSCs-derived hepatocytes (iHeps). The results showed that larger spheroid exhibit enhanced capability to differentiated into hepatic lineage by increasing the expression marker albumin, CYP3A4 and lower expression of fetal hepatic marker AFP. Several factor such as the tendency of cystic like structure forming, the necrotic area of the large dense spheroid, and interference of WNT/β-catenin signaling was significantly affecting the resulted iHeps. In this study, we suggest that the optimal spheroid size for hepatic differentiation can be attained from 500 to 600 μm diameter spheroid formed from 12,500–25,000 hiPSCs. This size can be potentially applied for various practical use of hepatic differentiation in scalable suspension culture.
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Affiliation(s)
- Fuad Gandhi Torizal
- Department of Bioengineering, School of Engineering, The University of Tokyo, Japan
| | - Keiichi Kimura
- Department of Bioengineering, School of Engineering, The University of Tokyo, Japan
| | - Ikki Horiguchi
- Department of Biotechnology, School of Engineering, Osaka University, Japan
| | - Yasuyuki Sakai
- Department of Chemical Systems Engineering, School of Engineering, The University of Tokyo, Japan.,International Research Center on Integrative Biomedical Systems (CIBiS), Institute of Industrial Science, The University of Tokyo, Japan
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14
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Oki Y, Kirita K, Ohta S, Ohba S, Horiguchi I, Sakai Y, Ito T. Switching of Cell Proliferation/Differentiation in Thiol–Maleimide Clickable Microcapsules Triggered by in Situ Conjugation of Biomimetic Peptides. Biomacromolecules 2019; 20:2350-2359. [DOI: 10.1021/acs.biomac.9b00333] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yuichiro Oki
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Katsuhisa Kirita
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Seiichi Ohta
- Center for
Disease
Biology and Integrative Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinsuke Ohba
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Center for
Disease
Biology and Integrative Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ikki Horiguchi
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yasuyuki Sakai
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Taichi Ito
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Center for
Disease
Biology and Integrative Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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15
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Ibuki M, Horiguchi I, Sakai Y. A novel tool for suspension culture of human induced pluripotent stem cells: Lysophospholipids as a cell aggregation regulator. Regen Ther 2019; 12:74-82. [PMID: 31890769 PMCID: PMC6933451 DOI: 10.1016/j.reth.2019.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 03/13/2019] [Accepted: 03/20/2019] [Indexed: 01/26/2023] Open
Abstract
Suspension culture for the increase in human induced pluripotent stem cells (hiPSCs) has been one of the major challenges. Previously, we reported that albumin-associated lipids prevented aggregation of hiPSCs, whereas, lipids responsible for this function were unclear. Here, by using cell aggregation assay, we investigated principal lipids regulated aggregation size of hiPSCs. As a result, lysophosphatidic acid (LPA) and Sphingosine-1-phosphate (S1P), known as lysophospholipids acting as a signaling molecule, were identified. These lipids regulated the aggregation size in a dose-dependent manner. Aggregates formed with these lipids kept the high-expression rates of pluripotent marker genes and had the abilities of proliferation. These studies demonstrated that LPA and S1P were useful for suspension culture for hiPSCs without affecting the growth ability and pluripotency of hiPSCs. This knowledge will lead to the development of a simple and robust method for the mass culture of hiPSCs.
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Affiliation(s)
- Masato Ibuki
- Regenerative Medicine and Cell Therapy Laboratories, Kaneka Corporation, 6-7-3, Minatojima Minamimachi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
| | - Ikki Horiguchi
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Yasuyuki Sakai
- Department of Chemical System Engineering, School of Engineering, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
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Torizal FG, Horiguchi I, Sakai Y. Physiological Microenvironmental Conditions in Different Scalable Culture Systems for Pluripotent Stem Cell Expansion and Differentiation. Open Biomed Eng J 2019. [DOI: 10.2174/1874120701913010041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Human Pluripotent Stem Cells (PSCs) are a valuable cell type that has a wide range of biomedical applications because they can differentiate into many types of adult somatic cell. Numerous studies have examined the clinical applications of PSCs. However, several factors such as bioreactor design, mechanical stress, and the physiological environment have not been optimized. These factors can significantly alter the pluripotency and proliferation properties of the cells, which are important for the mass production of PSCs. Nutritional mass transfer and oxygen transfer must be effectively maintained to obtain a high yield. Various culture systems are currently available for optimum cell propagation by maintaining the physiological conditions necessary for cell cultivation. Each type of culture system using a different configuration with various advantages and disadvantages affecting the mechanical conditions in the bioreactor, such as shear stress. These factors make it difficult to preserve the cellular viability and pluripotency of PSCs. Additional limitations of the culture system for PSCs must also be identified and overcome to maintain the culture conditions and enable large-scale expansion and differentiation of PSCs. This review describes the different physiological conditions in the various culture systems and recent developments in culture technology for PSC expansion and differentiation.
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Horiguchi I, Suzuki I, Morimura T, Sakai Y. An Orbital Shaking Culture of Mammalian Cells in O-shaped Vessels to Produce Uniform Aggregates. J Vis Exp 2019. [PMID: 30663657 DOI: 10.3791/57922] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Suspension cultures of mammalian cell aggregates are required for various applications in medical and biotechnological fields. The disposable bag-based method is one of the simplest techniques for the mass production of cellular aggregates, but it does not protect the cultures against over-aggregation, which occurs when they gather at the bottom center of the culture vessel. To solve this problem, we developed an O-shaped dish and an O-shaped bag, neither of which contains a central region. Aggregates grown in either O-shaped culture vessel were noticeably more uniform in size than aggregates grown in conventional vessels. Histological analyses showed that aggregates in conventional culture dishes contained necrotic cores most likely caused by a poor oxygen supply. In contrast, aggregates that were grown in the O-shaped bag, even those with similar diameters to aggregates in conventional culture dishes, did not show necrotic cores. These results suggest that the O-shaped bag provides sufficient oxygen to the aggregates due to the oxygen permeability of the bag material. We, therefore, propose that this novel gas-permeable O-shaped culture bag is suitable for the mass production of uniform aggregates that are necessary in various biotechnological fields.
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Affiliation(s)
- Ikki Horiguchi
- Department of Chemical System Engineering, University of Tokyo; Department of Biotechnology, Osaka University;
| | | | | | - Yasuyuki Sakai
- Department of Chemical System Engineering, University of Tokyo; Institute of Industrial Science, University of Tokyo
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Kimura K, Horiguchi I, Kido T, Miyajima A, Sakai Y. Enhanced Hepatic Differentiation of Human Induced Pluripotent Stem Cells Using Gas-Permeable Membrane. Tissue Eng Part A 2018; 25:457-467. [PMID: 30141379 DOI: 10.1089/ten.tea.2018.0084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
IMPACT STATEMENT Although oxygen is a vital nutrient for the hepatocytes in vitro, few reports have focused on its effect during hepatic differentiation of induced pluripotent stem cells (iPSCs). In this report, we performed the hepatic differentiation of human iPSCs (hiPSCs) under different atmospheric oxygen concentrations and oxygen supply fluxes to investigate the effects of oxygen in terms of both the concentration and the supply flux. Results demonstrate that direct oxygenation through a polydimethylsiloxane (PDMS) membrane enhances the maturation and efficient production of hiPSC-derived hepatocyte-like cells (iHeps). Thus, direct oxygenation through a PDMS membrane is a better alternative culture method over conventional tissue culture-treated polystyrene (TCPS) plates for the maturation of hiPSC-derived hepatocytes in vitro.
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Affiliation(s)
- Keiichi Kimura
- 1 Department of Bioengineering and School of Engineering, University of Tokyo, Tokyo, Japan
| | - Ikki Horiguchi
- 2 Department of Chemical System Engineering, School of Engineering, University of Tokyo, Tokyo, Japan
| | - Taketomo Kido
- 3 Laboratory of Cell Growth and Differentiation, Institute of Molecular and Cellular Biosciences, University of Tokyo, Tokyo, Japan
| | - Atsushi Miyajima
- 3 Laboratory of Cell Growth and Differentiation, Institute of Molecular and Cellular Biosciences, University of Tokyo, Tokyo, Japan
| | - Yasuyuki Sakai
- 1 Department of Bioengineering and School of Engineering, University of Tokyo, Tokyo, Japan.,2 Department of Chemical System Engineering, School of Engineering, University of Tokyo, Tokyo, Japan.,4 Center for International Research on Integrative Biomedical Systems, Institute of Industrial Science, University of Tokyo, Tokyo, Japan.,5 Max Planck-The University of Tokyo, Center for Integrative Inflammology, University of Tokyo, Tokyo, Japan
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Kino-oka M, Kagihiro M, Aoki T, Taki Y, Fukumori K, Horiguchi I, Mizutani M. Critical quality attributes in the filling process for iPSCs and MSCs by considering the kinetics of cell death and growth. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.02.184] [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: 10/17/2022]
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Horiguchi I, Urabe Y, Kimura K, Sakai Y. Effects of glucose, lactate and basic FGF as limiting factors on the expansion of human induced pluripotent stem cells. J Biosci Bioeng 2018; 125:111-115. [DOI: 10.1016/j.jbiosc.2017.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/26/2017] [Accepted: 08/04/2017] [Indexed: 12/15/2022]
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Horiguchi I, Sakai Y. Serum replacement with albumin-associated lipids prevents excess aggregation and enhances growth of induced pluripotent stem cells in suspension culture. Biotechnol Prog 2016; 32:1009-16. [PMID: 27193385 DOI: 10.1002/btpr.2301] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 05/10/2016] [Indexed: 01/08/2023]
Abstract
Suspension culture systems are currently under investigation for the mass production of pluripotent stem (PS) cells for tissue engineering; however, the control of cell aggregation in suspension culture remains challenging. Existing methods to control aggregation such as microwell culture are difficult to scale up. To address this issue, in this study a novel method that incorporates the addition of KnockOut Serum Replacement (KSR) to the PS cell culture medium was described. The method regulated cellular aggregation and significantly improved cell growth (a 2- to 10-fold increase) without any influence on pluripotency. In addition, albumin-associated lipids as the major working ingredient of KSR responsible for this inhibition of aggregation were identified. This is one of the simplest methods described to date to control aggregation and requires only chemically synthesizable reagents. Thus, this method has the potential to simplify the mass production process of PS cells and thus lower their cost. © 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:1009-1016, 2016.
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Affiliation(s)
- Ikki Horiguchi
- Dept. of Chemical System Engineering, The University of Tokyo, Tokyo, Japan
| | - Yasuyuki Sakai
- Dept. of Chemical System Engineering, The University of Tokyo, Tokyo, Japan.,Center for International Research on Integrative Biomedical Systems, Inst. of Industrial Science, The University of Tokyo, Tokyo, Japan
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Abstract
Pluripotent stem cells (PS cells) are the focus of intense research due to their role in regenerative medicine and drug screening. However, the development of a mass culture system would be required for using PS cells in these applications. Suspension culture is one promising culture method for the mass production of PS cells, although some issues such as controlling aggregation and limiting shear stress from the culture medium are still unsolved. In order to solve these problems, we developed a method of calcium alginate (Alg-Ca) encapsulation using a co-axial nozzle. This method can control the size of the capsules easily by co-flowing N₂ gas. The controllable capsule diameter must be larger than 500 µm because too high a flow rate of N₂ gas causes the breakdown of droplets and thus heterogeneous-sized capsules. Moreover, a low concentration of Alg-Na and CaCl₂ causes non-spherical capsules. Although an Alg-Ca capsule without a coating of Alg-PLL easily dissolves enabling the collection of cells, they can also potentially leak out from capsules lacking an Alg-PLL coating. Indeed, an alginate-PLL coating can prevent cellular leakage but is also hard to break. This technology can be used to research the stem cell niche as well as the mass production of PS cells because encapsulation can modify the micro-environment surrounding cells including the extracellular matrix and the concentration of secreted factors.
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Affiliation(s)
- Ikki Horiguchi
- Center for International Research on Integrative Biomedical System, Institute of Industrial Science, The University of Tokyo;
| | - Yasuyuki Sakai
- Center for International Research on Integrative Biomedical System, Institute of Industrial Science, The University of Tokyo
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Horiguchi I, Chowdhury MM, Sakai Y, Tabata Y. Proliferation, morphology, and pluripotency of mouse induced pluripotent stem cells in three different types of alginate beads for mass production. Biotechnol Prog 2014; 30:896-904. [DOI: 10.1002/btpr.1891] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 02/18/2014] [Indexed: 01/05/2023]
Affiliation(s)
- Ikki Horiguchi
- Dept. of Materials and Environmental science; Inst. of Industrial Science; University of Tokyo; 4-6-1 Komaba Tokyo Japan
| | - Mohammad M. Chowdhury
- Dept. of Materials and Environmental science; Inst. of Industrial Science; University of Tokyo; 4-6-1 Komaba Tokyo Japan
| | - Yasuyuki Sakai
- Dept. of Materials and Environmental science; Inst. of Industrial Science; University of Tokyo; 4-6-1 Komaba Tokyo Japan
| | - Yoji Tabata
- Dept. of Materials and Environmental science; Inst. of Industrial Science; University of Tokyo; 4-6-1 Komaba Tokyo Japan
- Laboratory of Stem Cell Bioengineering and Inst. of Bioengineering; Ecole Polytechnique Fédérale de Lausanne; Lausanne Switzerland
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Tabata Y, Horiguchi I, Lutolf MP, Sakai Y. Development of bioactive hydrogel capsules for the 3D expansion of pluripotent stem cells in bioreactors. Biomater Sci 2014; 2:176-183. [DOI: 10.1039/c3bm60183h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Maswanya ES, Moji K, Horiguchi I, Nagata K, Aoyagi K, Honda S, Takemoto T. Knowledge, risk perception of AIDS and reported sexual behaviour among students in secondary schools and colleges in Tanzania. Health Educ Res 1999; 14:185-196. [PMID: 10387499 DOI: 10.1093/her/14.2.185] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A questionnaire survey was carried out among 1041 students in secondary schools and colleges in Dar-es-Salaam, Tanzania to evaluate the relationship between HIV-risky sexual behaviour and anti-condom bias, as well as with AIDS-related information, knowledge, perceptions and attitudes. Self-reportedly, 54% of students (75% of the boys and 40% of the girls) were sexually active, 39% had a regular sexual partner and 13% had multiple partners in the previous year. The condom use rate was higher than previous reports. However, 30% of sexually active respondents did not always use condoms (Risk-1 behaviour) and 35% of those with multiple partners in the previous year did not always use condoms (Risk-2 behaviour). Multiple logistic regression analyses indicated that 'sex partner hates condom' had association with both Risk-1 behaviour (OR 2.47; 95% CI 1.58-3.85) and Risk-2 behaviour (OR 2.47; 95% CI 1.10-5.48). 'Use of condom prevents HIV infection' also had association with both Risk-1 behaviour (OR 2.09; 95% CI 1.19-3.67) and Risk-2 behaviour (OR 3.73; 95% CI 1.28-11.03). Students engaging in risky behaviour were aware of the risk, even though they failed to change their behaviour. Reasons for the AIDS epidemic among Tanzanian students and the importance of more effective AIDS education are also discussed.
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Affiliation(s)
- E S Maswanya
- Department of Public Health, Nagasaki University School of Medicine, Japan
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Tachibana H, Izumi T, Honda S, Horiguchi I, Manabe E, Takemoto T. A study of the impact of occupational and domestic factors on insomnia among industrial workers of a manufacturing company in Japan. Occup Med (Lond) 1996; 46:221-7. [PMID: 8695775 DOI: 10.1093/occmed/46.3.221] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Insomnia is one of the most common health problems and has recently been re-termed 'Disorders of initiating and Maintaining Sleep', or DIMS. The main purpose of the present study was to investigate the relationship between daily psychosocial stressors, to which workers are exposed in occupational and/or private life, and insomnia among male industrial workers in a medium-sized company located in Nagasaki City, Japan. All of the workers in the company (n = 368, male = 319) were asked to answer six sleep related questions and 24 questions about working and private conditions. Two hundred and seventy-one (85.0%) of them completed the questionnaire (average age was 40.9 years old). Twenty seven point seven per cent of the subjects complained of insomnia in the last month prior to the survey and the prevalence was in general accord with previous surveys. On the other hand, the proportion of hypnotic use (1.1%), especially in insomniac group (2.7%) was lower than previous reports. The results of multiple logistic regression analysis demonstrated that four psychosocial factors were significantly associated with insomnia: i.e. VDT work overload (odds ratio [OR] 5.058; 95% confidence intervals [95% CI] 2.381-10.745), limited space of bedroom (OR 2.612; 95% CI 1.283-5.683), over-involvement in job (OR 2.78; 95% CI 1.188-6.540), frequent alcohol beverages consumption (OR 2.595; CI 1.77-5.719).
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Affiliation(s)
- H Tachibana
- Department of Public Health, Nagasaki University School of Medicine, Japan
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