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Mori Y, Terasaki M, Osaka N, Fujikawa T, Yashima H, Saito T, Kataoka Y, Ohara M, Higashimoto Y, Matsui T, Yamagishi SI. DNA Aptamer Raised against Advanced Glycation End Products Improves Sperm Concentration, Motility, and Viability by Suppressing Receptors for Advanced Glycation End Product-Induced Oxidative Stress and Inflammation in the Testes of Diabetic Mice. Int J Mol Sci 2024; 25:5947. [PMID: 38892134 PMCID: PMC11172898 DOI: 10.3390/ijms25115947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 05/21/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a risk factor for male infertility, but the underlying molecular mechanisms remain unclear. Advanced glycation end products (AGEs) are pathogenic molecules for diabetic vascular complications. Here, we investigated the effects of the DNA aptamer raised against AGEs (AGE-Apt) on testicular and sperm abnormalities in a T2DM mouse model. KK-Ay (DM) and wild-type (non-DM) 4- and 7-week-old male mice were sacrificed to collect the testes and spermatozoa for immunofluorescence, RT-PCR, and histological analyses. DM and non-DM 7-week-old mice were subcutaneously infused with the AGE-Apt or control-aptamer for 6 weeks and were then sacrificed. Plasma glucose, testicular AGEs, and Rage gene expression in 4-week-old DM mice and plasma glucose, testicular AGEs, oxidative stress, and pro-inflammatory gene expressions in 7-week-old DM mice were higher than those in age-matched non-DM mice, the latter of which was associated with seminiferous tubular dilation. AGE-Apt did not affect glycemic parameters, but it inhibited seminiferous tubular dilation, reduced the number of testicular macrophages and apoptotic cells, and restored the decrease in sperm concentration, motility, and viability of 13-week-old DM mice. Our findings suggest that AGEs-Apt may improve sperm abnormality by suppressing AGE-RAGE-induced oxidative stress and inflammation in the testes of DM mice.
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Affiliation(s)
- Yusaku Mori
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Anti-Glycation Research Section, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan
| | - Michishige Terasaki
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan; (M.T.); (S.-i.Y.)
| | - Naoya Osaka
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan; (M.T.); (S.-i.Y.)
| | - Tomoki Fujikawa
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan; (M.T.); (S.-i.Y.)
| | - Hironori Yashima
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan; (M.T.); (S.-i.Y.)
| | - Tomomi Saito
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan; (M.T.); (S.-i.Y.)
| | - Yurie Kataoka
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan; (M.T.); (S.-i.Y.)
| | - Makoto Ohara
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan; (M.T.); (S.-i.Y.)
| | - Yuichiro Higashimoto
- Department of Chemistry, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan;
| | - Takanori Matsui
- Department of Bioscience and Biotechnology, Fukui Prefectural University, Eiheiji 910-1195, Fukui, Japan
| | - Sho-ichi Yamagishi
- Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University Graduate School of Medicine, Shinagawa 142-8555, Tokyo, Japan; (M.T.); (S.-i.Y.)
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Production of mouse offspring from zygotes fertilized with freeze-dried spermatids. Sci Rep 2022; 12:18430. [PMID: 36319672 PMCID: PMC9626645 DOI: 10.1038/s41598-022-22850-5] [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: 06/15/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022] Open
Abstract
Mouse cloning by nuclear transfer using freeze-drying (FD) somatic cells is now possible, but the success rate is significantly lower than that of FD spermatozoa. Because spermatozoa, unlike somatic cells, are haploid cells with hardened nuclei due to protamine, the factors responsible for their tolerance to FD treatment remain unclear. In this study, we attempt to produce offspring from FD spermatid, a haploid sperm progenitor cell whose nuclei, like somatic cells, have not yet been replaced by protamine. We developed a method for collecting FD spermatids from testicular suspension. Despite the significantly lower success rate than that of FD spermatozoa, healthy offspring were obtained when FD spermatids were injected into oocytes. Offspring were also obtained from FD spermatids derived from immature male mice that had not yet produced spermatozoa. These results suggest that nuclear protaminization, rather than haploid nuclei, is one of the key processes responsible for tolerance to FD treatment.
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Shi J, Fok KL, Dai P, Qiao F, Zhang M, Liu H, Sang M, Ye M, Liu Y, Zhou Y, Wang C, Sun F, Xie G, Chen H. Spatio-temporal landscape of mouse epididymal cells and specific mitochondria-rich segments defined by large-scale single-cell RNA-seq. Cell Discov 2021; 7:34. [PMID: 34001862 PMCID: PMC8129088 DOI: 10.1038/s41421-021-00260-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/08/2021] [Indexed: 02/03/2023] Open
Abstract
Spermatozoa acquire their fertilizing ability and forward motility during epididymal transit, suggesting the importance of the epididymis. Although the cell atlas of the epididymis was reported recently, the heterogeneity of the cells and the gene expression profile in the epididymal tube are still largely unknown. Considering single-cell RNA sequencing results, we thoroughly studied the cell composition, spatio-temporal differences in differentially expressed genes (DEGs) in epididymal segments and mitochondria throughout the epididymis with sufficient cell numbers. In total, 40,623 cells were detected and further clustered into 8 identified cell populations. Focused analyses revealed the subpopulations of principal cells, basal cells, clear/narrow cells, and halo/T cells. Notably, two subtypes of principal cells, the Prc7 and Prc8 subpopulations were enriched as stereocilia-like cells according to GO analysis. Further analysis demonstrated the spatially specific pattern of the DEGs in each cell cluster. Unexpectedly, the abundance of mitochondria and mitochondrial transcription (MT) was found to be higher in the corpus and cauda epididymis than in the caput epididymis by scRNA-seq, immunostaining, and qPCR validation. In addition, the spatio-temporal profile of the DEGs from the P42 and P56 epididymis, including transiting spermatozoa, was depicted. Overall, our study presented the single-cell transcriptome atlas of the mouse epididymis and revealed the novel distribution pattern of mitochondria and key genes that may be linked to sperm functionalities in the first wave and subsequent wave of sperm, providing a roadmap to be emulated in efforts to achieve sperm maturation regulation in the epididymis.
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Affiliation(s)
- Jianwu Shi
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Kin Lam Fok
- grid.10784.3a0000 0004 1937 0482School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR China
| | - Pengyuan Dai
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Feng Qiao
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Mengya Zhang
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Huage Liu
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Mengmeng Sang
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Mei Ye
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Yang Liu
- grid.16821.3c0000 0004 0368 8293Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Yiwen Zhou
- grid.16821.3c0000 0004 0368 8293Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Chengniu Wang
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Fei Sun
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Gangcai Xie
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Hao Chen
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
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Kamimura S, Inoue K, Mizutani E, Kim JM, Inoue H, Ogonuki N, Miyamoto K, Ihashi S, Itami N, Wakayama T, Ito A, Nishino N, Yoshida M, Ogura A. Improved development of mouse somatic cell nuclear transfer embryos by chlamydocin analogues, class I and IIa histone deacetylase inhibitors†. Biol Reprod 2021; 105:543-553. [PMID: 33982061 PMCID: PMC8335354 DOI: 10.1093/biolre/ioab096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 03/29/2021] [Accepted: 05/07/2021] [Indexed: 12/13/2022] Open
Abstract
In mammalian cloning by somatic cell nuclear transfer (SCNT), the treatment of reconstructed embryos with histone deacetylase (HDAC) inhibitors improves efficiency. So far, most of those used for SCNT are hydroxamic acid derivatives-such as trichostatin A-characterized by their broad inhibitory spectrum. Here, we examined whether mouse SCNT efficiency could be improved using chlamydocin analogues, a family of newly designed agents that specifically inhibit class I and IIa HDACs. Development of SCNT-derived embryos in vitro and in vivo revealed that four out of five chlamydocin analogues tested could promote the development of cloned embryos. The highest pup rates (7.1-7.2%) were obtained with Ky-9, similar to those achieved with trichostatin A (7.2-7.3%). Thus, inhibition of class I and/or IIa HDACs in SCNT-derived embryos is enough for significant improvements in full-term development. In mouse SCNT, the exposure of reconstructed oocytes to HDAC inhibitors is limited to 8-10 h because longer inhibition with class I inhibitors causes a two-cell developmental block. Therefore, we used Ky-29, with higher selectivity for class IIa than class I HDACs for longer treatment of SCNT-derived embryos. As expected, 24-h treatment with Ky-29 up to the two-cell stage did not induce a developmental block, but the pup rate was not improved. This suggests that the one-cell stage is a critical period for improving SCNT cloning using HDAC inhibitors. Thus, chlamydocin analogues appear promising for understanding and improving the epigenetic status of mammalian SCNT-derived embryos through their specific inhibitory effects on HDACs.
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Affiliation(s)
- Satoshi Kamimura
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan.,Faculty of Life and Environmental Sciences, University of Yamanashi, Kofu, Yamanashi, Japan.,Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Kimiko Inoue
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan.,Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Eiji Mizutani
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan.,Faculty of Life and Environmental Sciences, University of Yamanashi, Kofu, Yamanashi, Japan.,Laboratory of Stem Cell Therapy, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.,Division of Stem Cell Therapy, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Jin-Moon Kim
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Hiroki Inoue
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Narumi Ogonuki
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Kei Miyamoto
- Faculty of Biology-Oriented Science and Technology, Kindai University, Kinokawa-shi, Wakayama-ken, Japan
| | - Shunya Ihashi
- Faculty of Biology-Oriented Science and Technology, Kindai University, Kinokawa-shi, Wakayama-ken, Japan
| | - Nobuhiko Itami
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Teruhiko Wakayama
- Faculty of Life and Environmental Sciences, University of Yamanashi, Kofu, Yamanashi, Japan
| | - Akihiro Ito
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan.,RIKEN Center for Sustainable Resource Science, Wako, Saitama, Japan
| | - Norikazu Nishino
- RIKEN Center for Sustainable Resource Science, Wako, Saitama, Japan.,Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, Japan
| | - Minoru Yoshida
- RIKEN Center for Sustainable Resource Science, Wako, Saitama, Japan.,Department of Biotechnology, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Atsuo Ogura
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan.,Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,RIKEN Cluster for Pioneering Research, Wako, Saitama, Japan
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Inoue R, Harada K, Wakayama S, Ooga M, Wakayama T. Improvement of a twice collection method of mouse oocytes by surgical operation. J Reprod Dev 2020; 66:427-433. [PMID: 32507772 PMCID: PMC7593636 DOI: 10.1262/jrd.2020-059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Mouse oocytes are generally collected after euthanasia. However, if oocytes were collected without euthanasia, then mice could be used to collect oocytes again after recovery. This condition is especially useful for mice that are genotypically rare. In this study, we examined the reusability of mice after collecting oocytes via a surgical operation. When oocytes were collected using medetomidine/midazolam/butorphanol combination anesthesia and examined for the quality of oocytes after in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI), they could develop to full term at the same rate as controls. When oocytes were collected from those mice a second time, the average number of oocytes was reduced by nearly 1/3. However, the blastocyst and offspring rates of those oocytes after IVF or ICSI were the same as those of the control regardless of the recovery day period. Although germinal vesicle (GV) oocytes can be collected from all reused mice, the final number of offspring did not increase. Interestingly, when oocytes were collected from the front position of the ampulla, 76% of the oviducts possessed oocytes after reuse, and the average number of oocytes significantly increased to a level comparable to that of the control. Finally, we examined whether reused mice can be used as recipient females, and then healthy offspring were obtained similarly as the control recipients. In conclusion, we provide a new method to collect a sufficient number of oocytes from reused mice without concern.
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Affiliation(s)
- Rei Inoue
- Faculty of Life and Environmental Science, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Kana Harada
- Faculty of Life and Environmental Science, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Sayaka Wakayama
- Advanced Biotechnology Center, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Masatoshi Ooga
- Faculty of Life and Environmental Science, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Teruhiko Wakayama
- Advanced Biotechnology Center, University of Yamanashi, Yamanashi 400-8510, Japan
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Mochida K. Development of assisted reproductive technologies in small animal species for their efficient preservation and production. J Reprod Dev 2020; 66:299-306. [PMID: 32307339 PMCID: PMC7470897 DOI: 10.1262/jrd.2020-033] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Assisted reproductive technologies (ARTs) are widely used in the animal industry, human clinics, and for basic research. In small laboratory animal species such as mice, ARTs are essential for the production of animals for experiments, the preservation of genetic resources, and for the generation of new strains of genetically modified animals. The RIKEN BioResource Research Center (BRC) is one of the largest repositories of such animal bioresources, and maintains approximately 9,500 strains of mice with a variety of genetic backgrounds. We have sought to devise ARTs specific to the reproductive and physiological characteristics of each strain. Such ARTs include superovulation, in vitro fertilization (IVF), the cryopreservation of embryos and spermatozoa, transportation of cryopreserved materials and embryo transfer (ET). Of these, superovulation likely has the most influence on animal production because it determines the quantity of starting material for other ARTs. Superovulation using anti-inhibin serum combined with estrous synchronization has resulted in approximately a three-fold increase in production efficiency with IVF-ET in the C57BL/6J strain. Wild-derived strains are important as genetically diverse resources for murine rodents (Genus Mus), and many are unique to the BRC. We have also successfully developed ARTs for more than 50 wild-derived strains, which have been cryopreserved for future use. Our work to improve and develop ARTs for mice and other small laboratory species will contribute to the cost-effectiveness of routine operations at repository centers, and to the provision of high quality animals for research use.
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Affiliation(s)
- Keiji Mochida
- RIKEN BioResource Research Center, Tsukuba, Ibaraki 305-0074, Japan
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