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Matsumura T, Katagiri K, Yao T, Ishikawa-Yamauchi Y, Nagata S, Hashimoto K, Sato T, Kimura H, Shinohara T, Sanbo M, Hirabayashi M, Ogawa T. Generation of rat offspring using spermatids produced through in vitro spermatogenesis. Sci Rep 2023; 13:12105. [PMID: 37495678 PMCID: PMC10372019 DOI: 10.1038/s41598-023-39304-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 07/23/2023] [Indexed: 07/28/2023] Open
Abstract
An in vitro spermatogenesis method using mouse testicular tissue to produce fertile sperm was established more than a decade ago. Although this culture method has generally not been effective in other animal species, we recently succeeded in improving the culture condition to induce spermatogenesis of rats up to the round spermatid stage. In the present study, we introduced acrosin-EGFP transgenic rats in order to clearly monitor the production of haploid cells during spermatogenesis in vitro. In addition, a metabolomic analysis of the culture media during cultivation revealed the metabolic dynamics of the testis tissue. By modifying the culture media based on these results, we were able to induce rat spermatogenesis repeatedly up to haploid cell production, including the formation of elongating spermatids, which was confirmed histologically and immunohistochemically. Finally, we performed a microinsemination experiment with in vitro produced spermatids, which resulted in the production of healthy and fertile offspring. This is the first demonstration of the in vitro production of functional haploid cells that yielded offspring in animals other than mice. These results are expected to provide a basis for the development of an in vitro spermatogenesis system applicable to many other mammals.
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Affiliation(s)
- Takafumi Matsumura
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
| | - Kumiko Katagiri
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
| | - Tatsuma Yao
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
- Research and Development Center, Fuso Pharmaceutical Industries, Ltd., 2-3-30 Morinomiya, Joto-ku, Osaka, 536-8523, Japan
| | - Yu Ishikawa-Yamauchi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
| | - Shino Nagata
- Laboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa, 230-0045, Japan
| | - Kiyoshi Hashimoto
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
- Department of Urology, Yokohama City University School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
| | - Takuya Sato
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
| | - Hiroshi Kimura
- Micro/Nano Technology Center, Tokai University, Hiratsuka, Kanagawa, 259-1292, Japan
| | - Takashi Shinohara
- Department of Molecular Genetics, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan
| | - Makoto Sanbo
- Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Aichi, 444-8787, Japan
| | - Masumi Hirabayashi
- Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Aichi, 444-8787, Japan.
| | - Takehiko Ogawa
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan.
- Department of Urology, Yokohama City University School of Medicine, Yokohama, Kanagawa, 236-0004, Japan.
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Kulibin AY, Malolina EA. In vitro spermatogenesis: In search of fully defined conditions. Front Cell Dev Biol 2023; 11:1106111. [PMID: 36910153 PMCID: PMC9998899 DOI: 10.3389/fcell.2023.1106111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 02/08/2023] [Indexed: 03/14/2023] Open
Abstract
A complete reconstruction of spermatogenesis in vitro under fully defined conditions still has not been achieved. However, many techniques have been proposed to get closer to that aim. Here we review the current progress in the field. At first, we describe the most successful technique, the organ culture method, which allows to produce functional haploid cells. However, this method is based on the culturing of intact testis tissue with unknown factors acting inside it. Then we discuss different types of 3D-cultures where specific testicular cell populations may be aggregated and the impact of each cell population may be examined. Unfortunately, germ cell development does not proceed further than the pachytene stage of meiosis there, with rare exceptions. Finally, we describe recent studies that focus on germ cells in a conventional adherent cell culture. Such studies thoroughly examine issues with in vitro meiosis and provide insight into the mechanisms of meiotic initiation.
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Affiliation(s)
- A Yu Kulibin
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
| | - E A Malolina
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
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Matsumura T, Sato T, Abe T, Sanjo H, Katagiri K, Kimura H, Fujii T, Tanaka H, Hirabayashi M, Ogawa T. Rat in vitro spermatogenesis promoted by chemical supplementations and oxygen-tension control. Sci Rep 2021; 11:3458. [PMID: 33568686 PMCID: PMC7875995 DOI: 10.1038/s41598-021-82792-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 01/21/2021] [Indexed: 02/06/2023] Open
Abstract
In vitro spermatogenesis (IVS) using air-liquid interphase organ culture method is possible with mouse testis tissues. The same method, however, has been hardly applicable to animals other than mice, only producing no or limited progression of spermatogenesis. In the present study, we challenged IVS of rats with modifications of culture medium, by supplementing chemical substances, including hormones, antioxidants, and lysophospholipids. In addition, reducing oxygen tension by placing tissues in an incubator of lower oxygen concentration and/or applying silicone cover ceiling on top of the tissue were effective for improving the spermatogenic efficiency. Through these modifications of the culture condition, rat spermatogenesis up to round spermatids was maintained over 70 days in the cultured tissue. Present results demonstrated a significant progress in rat IVS, revealing conditions commonly favorable for mice and rats as well as finding rat-specific optimizations. This is an important step towards successful IVS in many animal species, including humans.
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Affiliation(s)
- Takafumi Matsumura
- grid.268441.d0000 0001 1033 6139Laboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa Japan
| | - Takuya Sato
- grid.268441.d0000 0001 1033 6139Laboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa Japan
| | - Takeru Abe
- grid.268441.d0000 0001 1033 6139Laboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa Japan
| | - Hiroyuki Sanjo
- grid.268441.d0000 0001 1033 6139Department of Urology, Yokohama City University School of Medicine, Yokohama, Kanagawa Japan
| | - Kumiko Katagiri
- grid.268441.d0000 0001 1033 6139Laboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa Japan
| | - Hiroshi Kimura
- grid.265061.60000 0001 1516 6626Department of Mechanical Engineering, Tokai University, Hiratsuka, Kanagawa Japan
| | - Teruo Fujii
- grid.26999.3d0000 0001 2151 536XInstitute of Industrial Science, University of Tokyo, Bunkyo, Tokyo Japan
| | - Hiromitsu Tanaka
- grid.411871.a0000 0004 0647 5488Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Nagasaki Japan
| | - Masumi Hirabayashi
- grid.467811.d0000 0001 2272 1771Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Aichi Japan
| | - Takehiko Ogawa
- grid.268441.d0000 0001 1033 6139Laboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa Japan ,grid.268441.d0000 0001 1033 6139Department of Urology, Yokohama City University School of Medicine, Yokohama, Kanagawa Japan
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