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Mukunoki A, Takeo T, Nakagata N. N-acetyl cysteine restores the fertility of vitrified-warmed mouse oocytes derived through ultrasuperovulation. PLoS One 2019; 14:e0224087. [PMID: 31639156 PMCID: PMC6804996 DOI: 10.1371/journal.pone.0224087] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 10/05/2019] [Indexed: 01/22/2023] Open
Abstract
Oocyte cryopreservation is useful for preserving fertility and storing genetic resources. However, the small number of oocytes acquired using conventional treatment to induce superovulation and the reduction of fertility due to cryopreservation represent significant problems. Herein, we vitrified the oocytes derived through high-yield superovulation using inhibin antiserum and equine chorionic gonadotropin (IAS + eCG: IASe) and examined the yield of cryopreserved oocytes and survival rates relative to those of vitrified–warmed mouse oocytes derived through conventional superovulation using equine chorionic gonadotropin (eCG). Furthermore, we investigated the effects of N-acetyl cysteine on the fertility and developmental potential of vitrified–warmed oocytes derived using IASe. Compared with eCG, IASe increased the yield of cryopreserved oocytes and achieved equivalent survival rates. N-acetyl cysteine (0.5 mM) increased the fertilization rate of vitrified–warmed oocytes derived using IASe. Vitrification decreased thiol levels in the zona pellucida (ZP), while warming followed by N-acetyl cysteine treatment increased free thiol levels in ZP. Moreover, N-acetyl cysteine treatment recovered zona hardening by cleaving disulfide bonds and promoting the expansion of ZP. Two-cell embryos derived via in vitro fertilization using N-acetyl cysteine developed into normal pups through embryo transfer. Therefore, we developed an efficient technique for the production of cryopreserved oocytes using IASe through superovulation and found that N-acetyl cysteine improves the fertility of vitrified–warmed oocytes by cleaving the disulfide bonds and promoting the expansion of ZP.
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Affiliation(s)
- Ayumi Mukunoki
- Division of Reproductive Engineering, Center for Animal Resources and Development, Kumamoto University, Honjo, Chuo-ku, Kumamoto, Japan
| | - Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development, Kumamoto University, Honjo, Chuo-ku, Kumamoto, Japan
| | - Naomi Nakagata
- Division of Reproductive Engineering, Center for Animal Resources and Development, Kumamoto University, Honjo, Chuo-ku, Kumamoto, Japan
- * E-mail:
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Takeo T, Mukunoki A, Nakagata N. Ovulation of juvenile, mature, and aged female C57BL/6 mice following coadministration of inhibin antiserum and equine chorionic gonadotropin. Theriogenology 2019; 135:1-6. [DOI: 10.1016/j.theriogenology.2019.05.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 05/27/2019] [Accepted: 05/29/2019] [Indexed: 02/02/2023]
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Yoshimoto H, Takeo T, Irie T, Nakagata N. Fertility of cold-stored mouse sperm is recovered by promoting acrosome reaction and hyperactivation after cholesterol efflux by methyl-beta-cyclodextrin. Biol Reprod 2017; 96:446-455. [DOI: 10.1095/biolreprod.116.142901] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 12/24/2016] [Accepted: 01/04/2017] [Indexed: 12/17/2022] Open
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Horikoshi Y, Takeo T, Nakagata N. N-acetyl cysteine prolonged the developmental ability of mouse two-cell embryos against oxidative stress at refrigerated temperatures. Cryobiology 2016; 72:198-204. [DOI: 10.1016/j.cryobiol.2016.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/25/2016] [Accepted: 05/04/2016] [Indexed: 11/29/2022]
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Raspa M, Mahabir E, Fray M, Volland R, Scavizzi F. Lack of transmission of murine norovirus to mice via in vitro fertilization, intracytoplasmic sperm injection, and ovary transplantation. Theriogenology 2016; 86:579-88. [PMID: 26972226 DOI: 10.1016/j.theriogenology.2016.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 02/10/2016] [Accepted: 02/11/2016] [Indexed: 11/27/2022]
Abstract
Since its discovery in 2003, murine norovirus (MNV) is still endemic in many rodent animal facilities. Our aim was to determine the risk of transmission of MNV (91% homology to MNV3) to embryo recipients and pups via assisted reproductive technologies, especially those which compromise the integrity of the zona pellucida. In vitro fertilization (IVF), assisted in vitro fertilization (AIVF) with reduced glutathione, intracytoplasmic sperm injection, and ovary transplantation were performed. Murine norovirus was detected by qualitative and quantitative reverse transcription polymerase chain reaction. After natural infection of immunocompetent C57BL/6NTacCnrm and immunodeficient athymic nude mice with MNV, the mesenteric lymph nodes, small intestine, spleen, liver, lung, brain, ovary, and testis were infected at specific intervals for more than a 1-year period. At Week 12, the number of viral genomes per milligram of gonad from both strains was 20 to 50. Murine norovirus strictly adhered to spermatozoa collected from infected mice because three washes did not remove MNV from the sperm. After using MNV-positive sperm for IVF, AIVF, and intracytoplasmic sperm injection, 27 to 30 genomes were detected in IVF (n = 100) and AIVF (n = 100) embryos from both mouse strains. Approximately 87% of MNV detected in these embryos was found in the zona pellucida. However, all embryo transfer recipients, pups, and ovary recipients were MNV-negative. The results indicate that manipulation of the germplasm through assisted reproductive technologies did not lead to transmission of MNV to mice. This may be because of the absence of an infectious dose or failure of the MNV strain to replicate effectively in developing embryos and the reproductive tract.
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Affiliation(s)
- Marcello Raspa
- National Research Council (IBCN), CNR-Campus International Development (EMMA-INFRAFRONTIER-IMPC), Monterotondo Scalo, Italy
| | - Esther Mahabir
- Comparative Medicine, Center for Molecular Medicine, University of Cologne, Cologne, Germany
| | - Martin Fray
- Mary Lyon Centre, MRC Harwell, Harwell Science and Innovation Campus, Oxfordshire, UK
| | - Ruth Volland
- Department of Pediatric Oncology and Hematology, Children's Hospital, University of Cologne, Cologne, Germany
| | - Ferdinando Scavizzi
- National Research Council (IBCN), CNR-Campus International Development (EMMA-INFRAFRONTIER-IMPC), Monterotondo Scalo, Italy.
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Takeo T, Nakagata N. Superovulation using the combined administration of inhibin antiserum and equine chorionic gonadotropin increases the number of ovulated oocytes in C57BL/6 female mice. PLoS One 2015; 10:e0128330. [PMID: 26024317 PMCID: PMC4449130 DOI: 10.1371/journal.pone.0128330] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 04/24/2015] [Indexed: 01/11/2023] Open
Abstract
Superovulation is a reproductive technique generally used to produce genetically engineered mice. Superovulation in mice involves the administration of equine chorionic gonadotropin (eCG) to promote follicle growth and then that of human chorionic gonadotropin (hCG) to induce ovulation. Previously, some published studies reported that inhibin antiserum (IAS) increased the number of ovulated oocytes in ddY and wild-derived strains of mice. However, the effect of IAS on the C57BL/6 strain, which is the most widely used inbred strain for the production of genetically engineered mice, has not been investigated. In addition, the combined effect of IAS and eCG (IASe) on the number of ovulated oocytes in superovulation treatment has not been examined. In this study, we examined the effect of IAS and eCG on the number of ovulated oocytes in immature female mice of the C57BL/6 strain in superovulation treatment. Furthermore, we evaluated the quality of obtained oocytes produced by superovulation using IASe by in vitro fertilization (IVF) with sperm from C57BL/6 or genetically engineered mice. The developmental ability of fresh or cryopreserved embryos was examined by embryo transfer. The administration of IAS or eCG had a similar effect on the number of ovulated oocytes in C57BL/6 female mice. The number of ovulated oocytes increased to about 3-fold by the administration of IASe than by the administration of IAS or eCG alone. Oocytes derived from superovulation using IASe normally developed into 2-cell embryos by IVF using sperm from C57BL/6 mice. Fresh or cryopreserved 2-cell embryos produced by IVF between oocytes of C57BL/6 mice and sperm from genetically engineered mice normally developed into live pups following embryo transfer. In summary, a novel technique of superovulation using IASe is extremely useful for producing a great number of oocytes and offspring from genetically engineered mice.
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Affiliation(s)
- Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860–0811, Japan
| | - Naomi Nakagata
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860–0811, Japan
- * E-mail:
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Takeo T, Horikoshi Y, Nakao S, Sakoh K, Ishizuka Y, Tsutsumi A, Fukumoto K, Kondo T, Haruguchi Y, Takeshita Y, Nakamuta Y, Tsuchiyama S, Nakagata N. Cysteine analogs with a free thiol group promote fertilization by reducing disulfide bonds in the zona pellucida of mice. Biol Reprod 2015; 92:90. [PMID: 25715791 DOI: 10.1095/biolreprod.114.125443] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 02/12/2015] [Indexed: 11/01/2022] Open
Abstract
Archives of cryopreserved sperm harvested from genetically engineered mice, in mouse resource centers, are a readily accessible genetic resource for the scientific community. We previously reported that exposure of oocytes to reduced glutathione (GSH) greatly improves the fertilization rate of frozen-thawed mouse sperm. Application of GSH to in vitro fertilization techniques is widely accepted as a standard protocol to produce sufficient numbers of mice from cryopreserved sperm. However, the detailed mechanism of the enhancement of fertilization mediated by GSH in vitro is not fully understood. Here we focused on the chemical by determining the effects of its amino acid constituents and cysteine analogs on the fertilization of oocytes by frozen-thawed sperm. Furthermore, we determined the stability of these compounds in aqueous solution. We show here that l-cysteine (l-Cys), d-cysteine (d-Cys), or N-acetyl-l-cysteine (NAC) increased the rate of fertilization when added to the medium but did not adversely affect embryo development in vitro or in vivo. The levels of thiol groups of proteins in the zona pellucida (ZP) and the expansion of the ZP were increased by l-Cys, d-Cys, and NAC. These effects were abrogated by the methylation of the thiol group of l-Cys. NAC was the most stable of these compounds in the fertilization medium at 4°C. These results suggest that the thiol groups of cysteine analogs markedly enhance the fertilization rate of mouse oocytes.
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Affiliation(s)
- Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Yuka Horikoshi
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Satohiro Nakao
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Kazuhito Sakoh
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Yuta Ishizuka
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Aki Tsutsumi
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Kiyoko Fukumoto
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Tomoko Kondo
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Yukie Haruguchi
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Yumi Takeshita
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Yuko Nakamuta
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Shuuji Tsuchiyama
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Naomi Nakagata
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto, Japan
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Ishizuka Y, Takeo T, Nakao S, Yoshimoto H, Hirose Y, Sakai Y, Horikoshi Y, Takeuji S, Tsuchiyama S, Nakagata N. Prolonged exposure to hyaluronidase decreases the fertilization and development rates of fresh and cryopreserved mouse oocytes. J Reprod Dev 2014; 60:454-9. [PMID: 25225080 PMCID: PMC4284320 DOI: 10.1262/jrd.2014-045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Hyaluronidase is generally used to remove cumulus cells from mouse oocytes before oocyte cryopreservation, intracytoplasmic sperm injection or DNA injection. In general, use of cumulus-free mouse oocytes decreases in vitro fertilizing ability compared with cumulus-surrounded oocytes. The effect of hyaluronidase exposure on the quality of mouse oocytes is not fully understood. Here, we investigated the effect of hyaluronidase exposure time on the fertilization rate of fresh and vitrified mouse oocytes and their subsequent developmental ability in vitro. We found that the fertilization rate decreased with hyaluronidase treatments. This reduction in the fertilization rate following treatment with hyaluronidase was fully reversed by removal of the zona pellucida. In addition, oocytes treated with hyaluronidase for 5 min or longer had a reduced capacity to develop to the morula and blastocyst stage. The survival, fertilization, and
developmental rates of vitrified-warmed oocytes were also reduced by longer exposure to hyaluronidase. In conclusion, these results suggest that prolonged exposure to hyaluronidase decreases the quality of mouse oocytes and shorter hyaluronidase treatment times may help achieve a stable and high fertilization rate in fresh and cryopreserved oocytes.
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Affiliation(s)
- Yuta Ishizuka
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Kumamoto 860-0811, Japan
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Kaneko R, Kakinuma T, Sato S, Jinno-Oue A, Hata H. Littermate influence on infant growth in mice: comparison of SJL/J and ICR as cotransferred carrier embryos. Exp Anim 2014; 63:375-81. [PMID: 25007838 PMCID: PMC4244286 DOI: 10.1538/expanim.63.375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In mice, a minimum number of healthy embryos is required to trigger and maintain
pregnancy. Therefore, when recovering mouse embryos from a limited litter, one useful
technique is to transfer carrier ICR embryos along with the embryos of interest, a
technique referred to as cotransfer. In this study, we examined suitable mouse strains for
cotransfer with C57BL/6J (B6) embryos in regards to the maintenance of pregnancy, number
of pups born, intrauterine growth, and postnatal growth. Because the coat color of B6 is
black, we compared two white coat-colored strains, SJL/J and ICR. Cotransfer of SJL/J and
ICR embryos had similar effects on maintenance of pregnancy, number of pups born, and
intrauterine growth. However, the postnatal growth of B6 mouse pups cotransferred and
grown with SJL/J pups was better than for B6 mouse pups cotransferred and grown with ICR
pups, suggesting competition among littermates. These results demonstrate that cotransfer
of SJL/J embryos will be useful not only as carrier embryos with B6-background embryos but
also as a model system to examine littermate competition.
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Affiliation(s)
- Ryosuke Kaneko
- Bioresource Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
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KANEKO R, KAKINUMA T, SATO S, JINNO-OUE A, HATA H. Littermate Influence on Infant Growth in Mice: Comparison of SJL/J and ICR as Cotransferred Carrier Embryos. Exp Anim 2014. [DOI: 10.1538/expanim.14-0009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Affiliation(s)
- Ryosuke KANEKO
- Bioresource Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Toshie KAKINUMA
- Bioresource Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Sachiko SATO
- Bioresource Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Atsushi JINNO-OUE
- Bioresource Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Hidekazu HATA
- Bioresource Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
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