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Yamamoto N, Hiramatsu N, Kato Y, Sato A, Kojima H. Development of an Eye Irritation Test Method Using an In-House Fabrication of a Reconstructed Human Cornea-like Epithelium Model for Eye Hazard Identification. Bioengineering (Basel) 2024; 11:302. [PMID: 38671724 PMCID: PMC11047593 DOI: 10.3390/bioengineering11040302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 03/17/2024] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
In a previous study, a novel human corneal-like epithelium model utilizing an immortalized human corneal epithelial cell line (iHCE-NY1) was developed as an alternative to animal models to identify chemicals not classified under the United Nations Globally Harmonized System of Classification and Labeling of Chemicals (GHS) and was evaluated following the criteria of Test Guideline 492 of the Organization for Economic Co-operation and Development (OECD). In the present study, our aim was to establish an eye irritation test protocol using the iHCE-NY1 model to classify liquid chemicals under the GHS ocular hazard categories: no effect, no classification (No Cat.), Category 2 (Cat. 2) reversible effects, and Category 1 (Cat. 1) irreversible eye damage. The protocol involved exposing the iHCE-NY1 model to 31 liquid test chemicals for 5 min, followed by observation at post-incubation periods (PIPs) to assess recovery. Classification was based on cell viability, and histopathological findings on PIP days 7, 14, and 21. The outcomes were compared with an established database of classifications. All Cat. 1 liquid chemicals, 62.5% of No Cat., and 63.2% of Cat. 2 were correctly categorized. This study demonstrates that the iHCE-NY1 model can not only distinguish No Cat. test liquid chemicals but also differentiate between Cat. 2 and Cat. 1 liquid chemicals.
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Affiliation(s)
- Naoki Yamamoto
- Support Office for Bioresource Research, Center for Translational Research, Translational Research Headquarters, Fujita Health University, Toyoake 470-1192, Aichi, Japan;
- International Center for Cell and Gene Therapy, Research Promotion Headquarters, Fujita Health University, Toyoake 470-1192, Aichi, Japan
| | - Noriko Hiramatsu
- Support Office for Bioresource Research, Center for Translational Research, Translational Research Headquarters, Fujita Health University, Toyoake 470-1192, Aichi, Japan;
| | - Yoshinao Kato
- Nippon Menard Cosmetic Co., Ltd., Nagoya 451-0071, Aichi, Japan
| | - Atsushi Sato
- Nippon Menard Cosmetic Co., Ltd., Nagoya 451-0071, Aichi, Japan
| | - Hajime Kojima
- Japanese Center for the Validation of Alternative Methods (JaCVAM), National Institute of Health Sciences (NIHS), Kawasaki 210-9501, Kanagawa, Japan;
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Hiramatsu N, Nagai N, Kondo M, Imaizumi K, Sasaki H, Yamamoto N. Morphological comparison between three-dimensional structure of immortalized human lens epithelial cells and Soemmering's ring. Med Mol Morphol 2021; 54:216-226. [PMID: 33458799 DOI: 10.1007/s00795-021-00280-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 01/03/2021] [Indexed: 01/01/2023]
Abstract
The incidence rate of post-cataract surgery posterior capsule opacification (PCO) and lens turbidity is about 20% in 5 years. Soemmering's ring, which is a type of PCO also called a regenerated lens with similar tissue structure to that of a human lens, is an important proxy for elucidating the mechanism of lens regeneration and maintenance of transparency. The authors created new human immortalized crystalline lens epithelial cells (iHLEC-NY1s) with excellent differentiation potential, and as a result of culturing the cells by static and rotation-floating methods, succeeded in producing a three-dimensional cell structure model (3D-iHLEC-NY1s) which is similar to Soemmering's ring in tissue structure and expression characteristics of αA-crystalline, βB2-crystalline, vimentin proteins. 3D-iHLEC-NY1s is expected to be a proxy in vitro experimental model of Soemmering's ring to enable evaluation of drug effects on suppression of cell aggregate formation and transparency. By further improving the culture conditions, we aim to control the cell sequence and elucidate the mechanism underlying the maintenance of lens transparency.
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Affiliation(s)
- Noriko Hiramatsu
- Center for Clinical Trial and Research Support, Fujita Health University Research Promotion and Support Headquarters, Toyoake, Aichi, 470-1192, Japan
- Graduate School of Medicine, Fujita Health University, Toyoake, Aichi, 470-1192, Japan
| | - Noriaki Nagai
- Faculty of Pharmacy, Kindai University, Higashiosaka, Osaka, 577-8502, Japan
| | - Masashi Kondo
- Center for Clinical Trial and Research Support, Fujita Health University Research Promotion and Support Headquarters, Toyoake, Aichi, 470-1192, Japan
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, 470-1192, Japan
| | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, 470-1192, Japan
| | - Hiroshi Sasaki
- Department of Ophthalmology, Kanazawa Medical University, Kahoku, Ishikawa, 920-0293, Japan
| | - Naoki Yamamoto
- Department of Ophthalmology, Kanazawa Medical University, Kahoku, Ishikawa, 920-0293, Japan.
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Yamamoto N, Takeda S, Hatsusaka N, Hiramatsu N, Nagai N, Deguchi S, Nakazawa Y, Takata T, Kodera S, Hirata A, Kubo E, Sasaki H. Effect of a Lens Protein in Low-Temperature Culture of Novel Immortalized Human Lens Epithelial Cells (iHLEC-NY2). Cells 2020; 9:cells9122670. [PMID: 33322631 PMCID: PMC7764252 DOI: 10.3390/cells9122670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/27/2020] [Accepted: 12/11/2020] [Indexed: 11/24/2022] Open
Abstract
The prevalence of nuclear cataracts was observed to be significantly higher among residents of tropical and subtropical regions compared to those of temperate and subarctic regions. We hypothesized that elevated environmental temperatures may pose a risk of nuclear cataract development. The results of our in silico simulation revealed that in temperate and tropical regions, the human lens temperature ranges from 35.0 °C to 37.5 °C depending on the environmental temperature. The medium temperature changes during the replacement regularly in the cell culture experiment were carefully monitored using a sensor connected to a thermometer and showed a decrease of 1.9 °C, 3.0 °C, 1.7 °C, and 0.1 °C, after 5 min when setting the temperature of the heat plate device at 35.0 °C, 37.5 °C, 40.0 °C, and 42.5 °C, respectively. In the newly created immortalized human lens epithelial cell line clone NY2 (iHLEC-NY2), the amounts of RNA synthesis of αA crystallin, protein expression, and amyloid β (Aβ)1-40 secreted into the medium were increased at the culture temperature of 37.5 °C compared to 35.0 °C. In short-term culture experiments, the secretion of Aβ1-40 observed in cataracts was increased at 37.5 °C compared to 35.0 °C, suggesting that the long-term exposure to a high-temperature environment may increase the risk of cataracts.
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Affiliation(s)
- Naoki Yamamoto
- Department of Ophthalmology, Kanazawa Medical University, Ishikawa 920-0293, Japan; (N.Y.); (S.T.); (N.H.); (E.K.)
- Research Promotion and Support Headquarters, Fujita Health University, Aichi 470-1192, Japan;
| | - Shun Takeda
- Department of Ophthalmology, Kanazawa Medical University, Ishikawa 920-0293, Japan; (N.Y.); (S.T.); (N.H.); (E.K.)
| | - Natsuko Hatsusaka
- Department of Ophthalmology, Kanazawa Medical University, Ishikawa 920-0293, Japan; (N.Y.); (S.T.); (N.H.); (E.K.)
| | - Noriko Hiramatsu
- Research Promotion and Support Headquarters, Fujita Health University, Aichi 470-1192, Japan;
| | - Noriaki Nagai
- Faculty of Pharmacy, Kindai University, Osaka 577-8502, Japan; (N.N.); (S.D.)
| | - Saori Deguchi
- Faculty of Pharmacy, Kindai University, Osaka 577-8502, Japan; (N.N.); (S.D.)
| | - Yosuke Nakazawa
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan;
| | - Takumi Takata
- Radiation Biochemistry, Division of Radiation Life Science, Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka 590-0494, Japan;
| | - Sachiko Kodera
- Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Aichi 466-8555, Japan; (S.K.); (A.H.)
| | - Akimasa Hirata
- Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Aichi 466-8555, Japan; (S.K.); (A.H.)
- Center of Biomedical Physics and Information Technology, Nagoya Institute of Technology, Aichi 466-8555, Japan
| | - Eri Kubo
- Department of Ophthalmology, Kanazawa Medical University, Ishikawa 920-0293, Japan; (N.Y.); (S.T.); (N.H.); (E.K.)
| | - Hiroshi Sasaki
- Department of Ophthalmology, Kanazawa Medical University, Ishikawa 920-0293, Japan; (N.Y.); (S.T.); (N.H.); (E.K.)
- Correspondence: ; Tel.: +81-762-286-2211
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Nakazawa Y, Aoki M, Ishiwa S, Morishita N, Endo S, Nagai N, Yamamoto N, Funakoshi-Tago M, Tamura H. Oral intake of α‑glucosyl‑hesperidin ameliorates selenite‑induced cataract formation. Mol Med Rep 2020; 21:1258-1266. [PMID: 32016451 PMCID: PMC7003023 DOI: 10.3892/mmr.2020.10941] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 11/27/2019] [Indexed: 01/09/2023] Open
Abstract
Hesperetin is a natural flavonoid with robust antioxidant properties. Our previous study reported that hesperetin can prevent cataract formation. However, an important consideration regarding hesperetin consumption is the limited bioavailability due to its poor solubility. The present study investigated the anti‑cataract effects of α‑glucosyl hesperidin in vivo and in vitro using a selenite‑induced cataract model. SD rats (age, 13 days) were orally administered PBS (0.2 ml) or α‑glucosyl hesperidin (200 mg/kg) on days 0, 1 and 2. Sodium selenite was subcutaneously administered to the rats 4 h after the first oral administration on day 0. Antioxidant levels in the lens and blood were measured on day 6. In vitro, human lens epithelial cells were treated with sodium selenite (10 µM) and/or hesperetin (50 or 100 mM) for 24 h and analyzed for apoptosis markers using sub‑G1 population and Annexin V‑FITC/propidium iodide staining and DNA ladder formation. α‑glucosyl hesperidin treatment significantly reduced the severity of selenite‑induced cataract. The level of antioxidants was significantly reduced in the selenite‑treated rats compared with in the controls; however, they were normalized with α‑glucosyl hesperidin treatment. In vitro, hesperetin could significantly reduce the number of cells undergoing apoptosis induced by sodium selenite in human lens epithelial cell lines. Overall, oral consumption of α‑glucosyl hesperidin could delay the onset of selenite‑induced cataract, at least in part by modulating the selenite‑induced cell death in lens epithelial cells.
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Affiliation(s)
- Yosuke Nakazawa
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105‑8512, Japan
| | - Miki Aoki
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105‑8512, Japan
| | - Sho Ishiwa
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105‑8512, Japan
| | | | - Shin Endo
- R&D Division, Hayashibara Co., Ltd, Okayama 702‑8006, Japan
| | - Noriaki Nagai
- Department of Advanced Design for Pharmaceuticals, Faculty of Pharmacy, Kindai University, Osaka 577‑8502, Japan
| | - Naoki Yamamoto
- Regenerative Medicine Support Promotion Facility, Center for Research Promotion and Support, Fujita Health University, Toyoake, Aichi 470‑1192, Japan
| | - Megumi Funakoshi-Tago
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105‑8512, Japan
| | - Hiroomi Tamura
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105‑8512, Japan
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Zhan K, Lin M, Liu MM, Sui YN, Zhao GQ. Establishment of primary bovine intestinal epithelial cell culture and clone method. In Vitro Cell Dev Biol Anim 2016; 53:54-57. [PMID: 27561890 DOI: 10.1007/s11626-016-0082-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 07/27/2016] [Indexed: 11/29/2022]
Abstract
The aim of this study was to establish bovine intestinal epithelial cell (BIEC) line and provide a novel clone cell method. Although various strategies of bovine cell culture and clone techniques have been reported, these methods remain not established. Here, we culture successfully primary BIECs and establish a novel clone cell method. Our result showed that BIECs could be successfully cultured and passaged about generation 5. These cellular aggregates and clusters were adherent loosely at day 2 of culture. Cell aggregates and clusters start to proliferate after approximately 4 d. The BIECs showed positive reaction against cytokeratin 18, E-cadherin, and characteristics of epithelial-like morphology. In addition, the fatty acid-binding proteins (FABPs), villin, and intestinal peptidase (IP) band were positive in BIECs. Our results suggest that the establishment of culturing and clone BIEC methods will apply to isolate and clone other primary cells. These BIECs could therefore contribute to the study of bovine intestinal nutrient absorption and regulation, immune regulation, and the pathogenesis of the bovine intestinal disease, which will provide intestinal cell model in vitro.
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Affiliation(s)
- Kang Zhan
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Miao Lin
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Ming-Mei Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Yang-Nan Sui
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Guo-Qi Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, People's Republic of China.
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