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Aramli MS, Sarvi Moghanlou K, Pourahad Anzabi M. A brief review of the methodology and cryoprotectants in selected fish and mammalian species. Reprod Domest Anim 2024; 59:e14575. [PMID: 38715442 DOI: 10.1111/rda.14575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 03/24/2024] [Accepted: 04/18/2024] [Indexed: 05/23/2024]
Abstract
Cryopreservation is a valuable technique used to assist in the genetic improvement of cultured stocks and provide a continuous supply of good-quality semen for artificial insemination. Conserving semen by cryopreservation serves several purposes (e.g. artificial reproductive technologies and species conservation) and is also used in the clinical treatment of human infertility. However, the lifespan of cryopreserved semen is influenced by a range of factors, including storage temperature, cooling rate, chemical composition of the extender, the concentration of cryoprotectant, reactive oxygen species, seminal plasma composition and hygienic control. The choice of cryoprotectant is a vital factor underlying the success of animal semen cryopreservation. In this regard, extensive research has been carried out on various cryoprotectants, such as egg yolk, dimethyl sulfoxide, methanol, ethylene glycol and dimethylacetamide. Recent studies have also described the use of a range of new cryoprotectants for cryopreservation, including compounds of plant origin (soy), amino acids, antifreeze proteins, carbohydrates and cyclodextrins. Moreover, semen cryopreservation and storage require the use of liquid nitrogen or ultralow refrigeration methods for both long- and short-term storage. This review summarizes the general methods used for freezing semen and discusses the use of traditional and newly emerging cryoprotectants (permeable and non-permeable) for the cryopreservation of semen in selected fish and mammalian species.
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2
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McPherson NO, Nottle M, McIlfatrick S, Saini A, Hamilton H, Bowman E, Tully CA, Pacella-Ince L, Zander-Fox D, Bakos HW. Clinical use of progesterone in human sperm preparation media for increasing IVF success. Reprod Biomed Online 2024; 48:103625. [PMID: 38402675 DOI: 10.1016/j.rbmo.2023.103625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 10/12/2023] [Accepted: 10/14/2023] [Indexed: 02/27/2024]
Abstract
RESEARCH QUESTION Can the addition of progesterone and neurotensin, molecular agents found in the female reproductive tract, after sperm washing increase the fertilization potential of human spermatozoa? DESIGN (i) Cohort study of 24 men. Spermatozoa selected by swim-up were incubated in either progesterone or neurotensin (0.1-100 µM) for 1-4 h, and hyperactive motility and binding to hyaluronan (0.1-100 µM) were assessed. The effect of progesterone 10 µM on sperm function was assessed in a blinded manner, including: hyperactive motility, binding to hyaluronan, tyrosine phosphorylation, acrosome reaction and oxidative DNA damage. (i) Embryo safety testing [one-cell mouse embryo assay (MEA), endotoxin and sterility counts (n = 3)] in preclinical embryo models of IVF (murine and porcine, n = 7 each model) and a small preliminary human study (n = 4) of couples undergoing standard IVF with oocytes inseminated with spermatozoa ± 10 µM progesterone. RESULTS Progesterone 10 µM increased sperm binding to hyaluronan, hyperactive motility and tyrosine phosphorylation (all P < 0.05). Neurotensin had no effect (P > 0.05). Progesterone 10 µM in human embryo culture media passed embryo safety testing (MEA, endotoxin concentration and sterility plate count). In preclinical models of IVF, the exposure of spermatozoa to progesterone 10 µM and oocytes to progesterone 1 µM was not detrimental, and increased the fertilization rate in mice and the blastocyst cell number in mice and pigs (all P ≤ 0.03). In humans, every transferred blastocyst that had been produced from spermatozoa exposed to progesterone resulted in a live birth. CONCLUSION The addition of progesterone to sperm preparation media shows promise as an adjunct to current methods for increasing fertilization potential. Randomized controlled trials are required to determine the clinical utility of progesterone for improving IVF outcomes.
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Affiliation(s)
- Nicole O McPherson
- Discipline of Reproduction and Development, School of Biomedicine, University of Adelaide, Adelaide, Australia; Freemasons Centre for Male Health and Wellbeing, University of Adelaide, Adelaide, Australia; Robinson Research Institute, University of Adelaide, Adelaide, Australia; Monash IVF Group, Clayton, Australia.
| | - Mark Nottle
- Discipline of Reproduction and Development, School of Biomedicine, University of Adelaide, Adelaide, Australia; Robinson Research Institute, University of Adelaide, Adelaide, Australia
| | - Stephan McIlfatrick
- Discipline of Reproduction and Development, School of Biomedicine, University of Adelaide, Adelaide, Australia; Robinson Research Institute, University of Adelaide, Adelaide, Australia
| | - Anmol Saini
- Discipline of Reproduction and Development, School of Biomedicine, University of Adelaide, Adelaide, Australia; Robinson Research Institute, University of Adelaide, Adelaide, Australia
| | | | | | - Cathryn A Tully
- Discipline of Reproduction and Development, School of Biomedicine, University of Adelaide, Adelaide, Australia; Robinson Research Institute, University of Adelaide, Adelaide, Australia; Repromed, Dulwich, Australia
| | - Leanne Pacella-Ince
- Discipline of Reproduction and Development, School of Biomedicine, University of Adelaide, Adelaide, Australia; Robinson Research Institute, University of Adelaide, Adelaide, Australia; Repromed, Dulwich, Australia
| | - Deirdre Zander-Fox
- Discipline of Reproduction and Development, School of Biomedicine, University of Adelaide, Adelaide, Australia; Monash IVF Group, Clayton, Australia; Monash University, Clayton, Australia
| | - Hassan W Bakos
- Monash IVF Group, Clayton, Australia; University of Newcastle, Newcastle, Australia; Memphasys Ltd, Homebush, Australia
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Zander-Fox DL, Pacella-Ince L, Morgan DK, Green MP. Mammalian embryo culture media: now and into the future. Reprod Fertil Dev 2023; 36:66-80. [PMID: 38064187 DOI: 10.1071/rd23168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023] Open
Abstract
For over 70years, since the culture of the first mammalian embryo in vitro , scientists have undertaken studies to devise and optimise media to support the manipulation and culture of gametes and embryos. This area of research became especially active in the late 1970s onwards following the successful birth of the first human in vitro fertilised embryo. This review summarises some of the key advances in mammalian embryo culture media over time based on a greater understanding of the biochemical milieu of the reproductive tract. It highlights how learnings from studies in mice and agricultural species have informed human culture media compositions, in particular the inclusion of albumin, growth factors, cytokines, and antioxidants into contemporary culture media formulations, and how these advances may then in turn help to inform and guide development of in vitro culture systems used in other arenas, in particular agriculture. Additionally, it will highlight how the introduction of new technologies, such as timelapse, can influence current trends in media composition and usage that may see a return to a single step medium.
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Affiliation(s)
- Deirdre L Zander-Fox
- Monash IVF Group, Melbourne, Vic., Australia; and Biomedicine Discovery Institute, Monash University, Melbourne, Vic., Australia; and School of Biomedicine, University of Adelaide, Adelaide, SA, Australia
| | - Leanne Pacella-Ince
- School of Biomedicine, University of Adelaide, Adelaide, SA, Australia; and Repromed, Adelaide, SA, Australia
| | | | - Mark P Green
- Monash IVF Group, Melbourne, Vic., Australia; and School of BioSciences, University of Melbourne, Melbourne, Vic., Australia
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4
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Tamari T, Ikeda Y, Morimoto K, Kobayashi K, Mizuno-Iijima S, Ayabe S, Kuno A, Mizuno S, Yoshiki A. A universal method for generating knockout mice in multiple genetic backgrounds using zygote electroporation. Biol Open 2023; 12:bio059970. [PMID: 37623822 PMCID: PMC10497038 DOI: 10.1242/bio.059970] [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: 04/12/2023] [Accepted: 08/04/2023] [Indexed: 08/26/2023] Open
Abstract
Genetically engineered mouse models are essential tools for understanding mammalian gene functions and disease pathogenesis. Genome editing allows the generation of these models in multiple inbred strains of mice without backcrossing. Zygote electroporation dramatically removed the barrier for introducing the CRISPR-Cas9 complex in terms of cost and labour. Here, we demonstrate that the generalised zygote electroporation method is also effective for generating knockout mice in multiple inbred strains. By combining in vitro fertilisation and electroporation, we obtained founders for knockout alleles in eight common inbred strains. Long-read sequencing analysis detected not only intended mutant alleles but also differences in read frequency of intended and unintended alleles among strains. Successful germline transmission of knockout alleles demonstrated that our approach can establish mutant mice targeting the same locus in multiple inbred strains for phenotyping analysis, contributing to reverse genetics and human disease research.
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Affiliation(s)
- Tomohiro Tamari
- Model Generation & Breeding Service, The Jackson Laboratory Japan, Inc., 955 Kamibayashi, Ishioka, Ibaraki 315-0138, Japan
- Experimental Animal Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan
- Doctoral Program in Biomedical Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Yoshihisa Ikeda
- Model Generation & Breeding Service, The Jackson Laboratory Japan, Inc., 955 Kamibayashi, Ishioka, Ibaraki 315-0138, Japan
- Laboratory Animal Resource Center in Trans-Border Medical Research Center, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Kento Morimoto
- Doctoral Program in Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
- Research Fellow of the Japan Society for the Promotion of Science, Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Keiko Kobayashi
- Model Generation & Breeding Service, The Jackson Laboratory Japan, Inc., 955 Kamibayashi, Ishioka, Ibaraki 315-0138, Japan
| | - Saori Mizuno-Iijima
- Experimental Animal Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan
| | - Shinya Ayabe
- Experimental Animal Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan
| | - Akihiro Kuno
- Department of Anatomy and Embryology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Seiya Mizuno
- Laboratory Animal Resource Center in Trans-Border Medical Research Center, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Atsushi Yoshiki
- Experimental Animal Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan
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Ito J, Iwata H. Age-related advanced glycation end-product accumulation impairs mitochondrial regulation after vitrification†. Biol Reprod 2023; 109:271-281. [PMID: 37399120 DOI: 10.1093/biolre/ioad070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 04/05/2023] [Accepted: 06/26/2023] [Indexed: 07/05/2023] Open
Abstract
Vitrification is an important assisted reproductive technology, although it induces mitochondrial dysfunction in embryos. Herein, we aimed to investigate whether age-associated accumulation of advanced glycation end-products (AGEs) in oocytes impairs the recovery of embryos from cryopreservation-induced mitochondrial dysfunction/damage. Mouse eight-cell stage embryos developed in vitro were vitrified and warmed and incubated up to the blastocyst stage. AGE levels in oocytes were higher in both aged mice and AGE accumulation mouse models (MGO-mice) than those in young and control mice. In addition, the level of SIRT1 upregulation was lower for embryos of aged and MGO-mice than that for embryos of young and control mice. The highest mitochondrial DNA (mtDNA) content was detected in blastocysts derived from vitrified embryos of aged and MGO-mice. The spent culture medium of blastocysts derived from both aged and MGO-mice contained higher mtDNA content than that of the blastocysts derived from young and control mice. EX527 increased mtDNA content in the spent culture medium of vitrified embryos derived from young mice. In addition, p62 aggregate levels were higher in vitrified embryos of control mice than those in vitrified embryos of MGO-mice. The SIRT1 activator, resveratrol, increased p62 aggregation levels in vitrified embryos derived from young and aged mice, whereas vitrification did not affect p62 aggregation levels in embryos from aged mice. Therefore, age-associated AGE accumulation induces decreased responsive SIRT1 upregulation following vitrified-warmed treatment and impairs mitochondrial quality control activity in vitrified embryos.
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Affiliation(s)
- Jun Ito
- Laboratory of Animal Reproduction, Department of Animal Science, Tokyo University of Agriculture, Atsugi, Kanagawa, Japan
| | - Hisataka Iwata
- Laboratory of Animal Reproduction, Department of Animal Science, Tokyo University of Agriculture, Atsugi, Kanagawa, Japan
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Hosotani M, Ichii O, Watanabe T, Kon Y. Oocyte cumulus complex quality and oviduct transportation velocity in systemic autoimmune disease model mice. Exp Biol Med (Maywood) 2023; 248:1359-1363. [PMID: 36961243 PMCID: PMC10657593 DOI: 10.1177/15353702231160875] [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: 11/11/2022] [Accepted: 01/30/2023] [Indexed: 03/25/2023] Open
Abstract
Oocyte transportation by the oviduct involves the interaction between ciliated epithelial cells and cumulus cells. To determine whether the quality of cumulus-oocyte complexes (COCs) changes the transportation property of COCs, we compared the transportation velocity of COCs (TVC) by the infundibulum ex vivo with various combinations of infundibula and COCs collected from different mice. We used young and aged C57BL/6N and MRL/MpJ, and MRL/MpJ-Faslpr/lpr mice as the strains with intact female reproductive function and the systemic autoimmune disease model exhibiting oocyte pick-up dysfunction owing to the morphofunctional abnormality of ciliated epithelium, respectively. The TVC of aged MRL strains was less than that of aged C57BL/6N mice, suggesting that aging affects the transportation of COCs in MRL strains. The TVC of aged MRL/MpJ-Faslpr/lpr mice was the least among all examined combinations, whereas the TVC accelerated when the infundibulum or COCs were collected from other strains. These results indicate that the transportation property of COCs is determined not only by the ciliary function in the infundibulum but also by the properties of COCs.
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Affiliation(s)
- Marina Hosotani
- Laboratory of Veterinary Anatomy, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu 069-8501, Japan
| | - Osamu Ichii
- Laboratory of Anatomy, Department of Basic Veterinary Science, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
- Laboratory of Agrobiomedical Science, Faculty of Agriculture, Hokkaido University, Sapporo 060-0818, Japan
| | - Takafumi Watanabe
- Laboratory of Veterinary Anatomy, Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu 069-8501, Japan
| | - Yasuhiro Kon
- Laboratory of Anatomy, Department of Basic Veterinary Science, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
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7
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Van NT, Kim SV. Improved approach for the cryopreservation of mouse sperm by combining monothioglycerol and l-glutamine. Cryobiology 2023; 111:142-145. [PMID: 37001845 PMCID: PMC10247421 DOI: 10.1016/j.cryobiol.2023.03.005] [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: 12/16/2022] [Revised: 02/07/2023] [Accepted: 03/15/2023] [Indexed: 03/31/2023]
Abstract
The CryoPreservation Media (CPM) for mouse sperm using raffinose and skim milk have been improved by adding either monothioglycerol (MTG) or l-glutamine to reduce the oxidative damage during sperm freezing and thawing. The CARD-CPM utilizing l-glutamine, but not MTG, has been widely used to meet the rising demand for cryopreservation of genetically modified mice, as the CARD method also improved sperm capacitation and in vitro fertilization (IVF). However, the viability of sperm frozen in the CARD-CPM is highly variable, indicating a room for improvement. To develop a more dependable technique for mouse sperm cryopreservation, we investigate whether combining MTG and l-glutamine in the CPM (MG-CPM) can produce a synergistic impact on sperm thawing and IVF rate. We found that MG-CPM reduced the incidence of infertility and increased the IVF success rate. Therefore, cryopreservation of mouse sperm in MG-CPM is a reliable method to ensure embryo generation from frozen sperm.
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Affiliation(s)
- Nguyen T Van
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107, USA; Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, 19107, USA
| | - Sangwon V Kim
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107, USA; Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, 19107, USA.
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8
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Francés-Herrero E, Lopez R, Campo H, de Miguel-Gómez L, Rodríguez-Eguren A, Faus A, Pellicer A, Cervelló I. Advances of xenogeneic ovarian extracellular matrix hydrogels for in vitro follicle development and oocyte maturation. BIOMATERIALS ADVANCES 2023; 151:213480. [PMID: 37267748 DOI: 10.1016/j.bioadv.2023.213480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 05/16/2023] [Accepted: 05/17/2023] [Indexed: 06/04/2023]
Abstract
Research aimed at preserving female fertility is increasingly using bioengineering techniques to develop new platforms capable of supporting ovarian cell function in vitro and in vivo. Natural hydrogels (alginate, collagen, and fibrin) have been the most exploited approaches; however they are biologically inert and/or biochemically simple. Thus, establishing a suitable biomimetic hydrogel from decellularized ovarian cortex (OC) extracellular matrix (OvaECM) could provide a complex native biomaterial for follicle development and oocyte maturation. The objectives of this work were (i) to establish an optimal protocol to decellularize and solubilize bovine OC, (ii) to characterize the histological, molecular, ultrastructural, and proteomic properties of the resulting tissue and hydrogel, and (iii) to assess its biocompatibility and adequacy for murine in vitro follicle growth (IVFG). Sodium dodecyl sulfate was identified as the best detergent to develop bovine OvaECM hydrogels. Hydrogels added into standard media or used as plate coatings were employed for IVFG and oocyte maturation. Follicle growth, survival, hormone production, and oocyte maturation and developmental competence were evaluated. OvaECM hydrogel-supplemented media best supported follicle survival, expansion, and hormone production, while the coatings provided more mature and competent oocytes. Overall, the findings support the xenogeneic use of OvaECM hydrogels for future human female reproductive bioengineering.
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Affiliation(s)
- Emilio Francés-Herrero
- Department of Pediatrics, Obstetrics and Gynecology, School of Medicine, University of Valencia, 46010 Valencia, Spain; IVIRMA Global Research Alliance, IVI Foundation, Instituto de Investigación Sanitaria La Fe (IIS La Fe), 46026 Valencia, Spain
| | - Rosalba Lopez
- Department of Pediatrics, Obstetrics and Gynecology, School of Medicine, University of Valencia, 46010 Valencia, Spain; IVIRMA Global Research Alliance, IVI Foundation, Instituto de Investigación Sanitaria La Fe (IIS La Fe), 46026 Valencia, Spain
| | - Hannes Campo
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Lucía de Miguel-Gómez
- Department of Pediatrics, Obstetrics and Gynecology, School of Medicine, University of Valencia, 46010 Valencia, Spain; IVIRMA Global Research Alliance, IVI Foundation, Instituto de Investigación Sanitaria La Fe (IIS La Fe), 46026 Valencia, Spain
| | - Adolfo Rodríguez-Eguren
- IVIRMA Global Research Alliance, IVI Foundation, Instituto de Investigación Sanitaria La Fe (IIS La Fe), 46026 Valencia, Spain
| | - Amparo Faus
- IVIRMA Global Research Alliance, IVI Foundation, Instituto de Investigación Sanitaria La Fe (IIS La Fe), 46026 Valencia, Spain
| | - Antonio Pellicer
- Department of Pediatrics, Obstetrics and Gynecology, School of Medicine, University of Valencia, 46010 Valencia, Spain; IVI Roma Parioli, IVI-RMA Global, 00197 Rome, Italy
| | - Irene Cervelló
- IVIRMA Global Research Alliance, IVI Foundation, Instituto de Investigación Sanitaria La Fe (IIS La Fe), 46026 Valencia, Spain.
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9
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Nakao S, Ito K, Sugahara C, Watanabe H, Kondoh G, Nakagata N, Takeo T. Synchronization of the ovulation and copulation timings increased the number of in vivo fertilized oocytes in superovulated female mice. PLoS One 2023; 18:e0281330. [PMID: 36745586 PMCID: PMC9901804 DOI: 10.1371/journal.pone.0281330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 01/20/2023] [Indexed: 02/07/2023] Open
Abstract
The number of sperm that reaches the oocytes in mammalian species is limited. In mice, 8-10 oocytes are ovulated, a similar number of sperm reaches the oocytes, and nearly all oocytes are fertilized via natural mating. Meanwhile, our improved superovulation technique (ultrasuperovulation: administration of inhibin antiserum and equine chorionic gonadotropin [IASe]) produced 100 oocytes from a single female C57BL/6 mouse but resulted in only approximately 20 fertilized oocytes via mating. We hypothesized that sperm shortage in the ampulla might cause this low fertilization rate. Mice were mated in the proestrus stage or after hormone injection, but ovulation timing was not considered. In clinical application, the rhythm method supports fertilization by testing the ovulation period and synchronizing the ovulation and copulation timings. Therefore, this study examined the effects of ovulation and copulation timings on in vivo fertilization in female mice with IASe. Synchronization of the ovulation and copulation timings increased fertilization efficiency in female mice with ultrasuperovulation. The number of embryos obtained post ovulation was three times higher than that obtained pre ovulation. This study suggests that synchronized ovulation and copulation timings improve the efficiency of in vivo fertilization in IASe-treated female mice. This technique can be used to produce genetically modified mice and develop technologies for infertility treatment.
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Affiliation(s)
- Satohiro Nakao
- Division of Reproductive Engineering, Center for Animal Resources and Development, Kumamoto University, Kumamoto, Japan
| | - Kotono Ito
- Division of Reproductive Engineering, Center for Animal Resources and Development, Kumamoto University, Kumamoto, Japan
| | - Chihiro Sugahara
- Division of Reproductive Engineering, Center for Animal Resources and Development, Kumamoto University, Kumamoto, Japan
| | - Hitomi Watanabe
- Laboratory of Integrative Biological Science, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Gen Kondoh
- Laboratory of Integrative Biological Science, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Naomi Nakagata
- Division of Reproductive Biotechnology and Innovation, Center for Animal Resources and Development, Kumamoto University, Kumamoto, Japan
| | - Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development, Kumamoto University, Kumamoto, Japan
- * E-mail:
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10
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Battistella A, Andolfi L, Stebel M, Ciubotaru C, Lazzarino M. Investigation on the change of spermatozoa flagellar beating forces before and after capacitation. BIOMATERIALS ADVANCES 2023; 145:213242. [PMID: 36549152 DOI: 10.1016/j.bioadv.2022.213242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 11/14/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
The swimming forces exerted by mammalian spermatozoa during the pathway to the ovary and during the interaction with the oocyte are thought to play a fundamental role in the fertilization of the egg. In particular, a process named capacitation is of key relevance for its success. Capacitation enables spermatozoa to undergo the acrosome reaction and to exhibit different motility called hyperactivation with a change in the sperm cell tail motion from symmetric to a more asymmetric beating, characterized by wider flagellar bending at lower frequencies. Despite several studies about the mechanism that underlies capacitation, no quantitative information is available about the forces associated with sperm motility. Sperm cell motility has been widely studied with digital imaging tools and video microscopy, but these methodologies cannot provide information about the forces exerted by spermatozoa during the motion and the contribution of every single frequency of flagellar beating to the sperm cell movement. For this purpose, fluidic force microscopy was used to trap single swimming spermatozoa allowing to evaluate these parameters. We observe significant differences between capacitated and non-capacitated spermatozoa in terms of force exerted and beating frequencies. The description of the dynamics of this process is of great interest in the field of reproductive medicine. Such information could be useful to clarify unknown causes of male infertility or for the development of novel methods to assess the quality of semen samples.
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Affiliation(s)
- Alice Battistella
- CNR-IOM, SS 14 km 163.5 Area Science Park Basovizza, 34149 Trieste, Italy.
| | - Laura Andolfi
- CNR-IOM, SS 14 km 163.5 Area Science Park Basovizza, 34149 Trieste, Italy.
| | - Marco Stebel
- University of Trieste, P. le Europa 1, 34100 Trieste, Italy.
| | - Catalin Ciubotaru
- CNR-IOM, SS 14 km 163.5 Area Science Park Basovizza, 34149 Trieste, Italy.
| | - Marco Lazzarino
- CNR-IOM, SS 14 km 163.5 Area Science Park Basovizza, 34149 Trieste, Italy.
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11
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Sari GP, Hilario PLL, Yuri S, Honda A, Isotani A. Scheduled simple production method of pseudopregnant female mice for embryo transfer using the luteinizing hormone-releasing hormone agonist. Sci Rep 2022; 12:21985. [PMID: 36539541 PMCID: PMC9767918 DOI: 10.1038/s41598-022-26425-2] [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: 05/09/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
The use of mice as experimental animal models has been a practice since the development of genetically engineered mouse models (GEMMs) in the early 1980s. New technologies, including genome editing, have helped in the time- and cost-efficient generation of GEMMs. However, methods for preparing pseudopregnant females, essential for the generation of GEMMs, remain less advanced. This study proposes a new method to achieve simple production of pseudopregnant female mice using a luteinizing hormone-releasing hormone agonist (LHRHa). A 20 µg LHRHa/mouse was identified as the best dose for inducing estrus synchronization. However, the frequency of copulation was 40% on a single injection. With sequential injections of 20 µg LHRHa/mouse on Days-1 and -2, followed by pairing on Day-5, 74% of LHRHa-treated females copulated with male mice. Moreover, LHRHa treatment did not affect fetal and postnatal development. Eventually, successful generation of offspring via embryo transfer was attained using LHRHa-treated pseudopregnant females. LHRHa administration method is efficient in producing pseudopregnant female mice for the generation of GEMMs, and we expect that it will contribute towards advancing the clinical research.
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Affiliation(s)
- Gema Puspa Sari
- grid.260493.a0000 0000 9227 2257Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-Cho, Ikoma, Nara 630-0192 Japan
| | - Patrick Louis Lagman Hilario
- grid.260493.a0000 0000 9227 2257Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-Cho, Ikoma, Nara 630-0192 Japan
| | - Shunsuke Yuri
- grid.260493.a0000 0000 9227 2257Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-Cho, Ikoma, Nara 630-0192 Japan
| | - Arata Honda
- grid.410804.90000000123090000Center for Development of Advanced Medical Technology, School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-Shi, Tochigi-Ken 329-0498 Japan
| | - Ayako Isotani
- grid.260493.a0000 0000 9227 2257Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-Cho, Ikoma, Nara 630-0192 Japan
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12
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Gerb SA, Agca C, Stevey L, Agca Y. Effects of CO₂ Euthanasia of C57BL/6 Mice on Sperm Motility, In Vitro Fertilization, and Embryonic Developmental Competence. JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE : JAALAS 2022; 61:603-610. [PMID: 36283799 PMCID: PMC9732780 DOI: 10.30802/aalas-jaalas-22-000012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Cryopreservation of epididymal sperm collected after euthanasia is a common method to preserve and distribute valuable mouse models worldwide. However, the euthanasia method used prior to sperm collection must not adversely affect sperm quality. The most common method of euthanasia in mice is CO₂ asphyxiation, but its effect on the quality of sperm collected postmortem is largely unknown. The objective of this study was to determine the effects of CO₂ euthanasia of C57BL/6 mice on both freshly recovered sperm and sperm subjected to freezing and thawing. First, sperm concentration, progressive motility, curvilineal velocity (VCL), average path velocity (VAP), and progressive velocity (VSL) were analyzed for mice euthanized by cervical dislocation (CD), high flow CO₂ (100%), or low flow CO₂ (30%) displacement/minute, respectively. Then, in-vitro fertilization and embryonic development rates were determined using frozen-thawed sperm from each euthanasia method. Neither fresh nor frozen-thawed sperm showed significant differences in sperm concentration, progressive motility, VAP, or VCL when compared to CD and CO₂ groups. However, frozen-thawed sperm collected from CD mice had higher VCL values than did those collected from the low flow mice (P = 0.039). VCL was not different in fresh or frozen-thawed sperm collected after mouse euthanasia by CD as compared with high flow CO₂ or by high flow as compared with low flow CO₂. Frozen-thawed sperm showed no differences among the 3 euthanasia groups for fertilization (P = 0.452) or blastocyst development rates (P = 0.298). The results indicate that CO₂ euthanasia can be used as an alternative to CD to obtain optimal quality mouse sperm for cryopreservation while remaining compliant with welfare requirements.
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Affiliation(s)
- Samantha A Gerb
- College of Veterinary Medicine, University of Missouri, Columbia, Missouri, and
| | - Cansu Agca
- College of Veterinary Medicine, University of Missouri, Columbia, Missouri, and
| | - Lynlee Stevey
- Department of Animal Resources, University of Southern California, Los Angeles, California
| | - Yuksel Agca
- College of Veterinary Medicine, University of Missouri, Columbia, Missouri;,
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13
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Takeo T, Nakao S, Mikoda N, Yamaga K, Maeda R, Tsuchiyama S, Nakatsukasa E, Nakagata N. Optimized protocols for sperm cryopreservation and in vitro fertilization in the rat. Lab Anim (NY) 2022; 51:256-274. [DOI: 10.1038/s41684-022-01053-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 08/15/2022] [Indexed: 11/05/2022]
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14
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S. Aljaser F. Cryopreservation Methods and Frontiers in the Art of Freezing Life in Animal Models. Vet Med Sci 2022. [DOI: 10.5772/intechopen.101750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The development in cryobiology in animal breeding had revolutionized the field of reproductive medicine. The main objective to preserve animal germplasm stems from variety of reasons such as conservation of endangered animal species, animal diversity, and an increased demand of animal models and/or genetically modified animals for research involving animal and human diseases. Cryopreservation has emerged as promising technique for fertility preservation and assisted reproduction techniques (ART) for production of animal breeds and genetically engineered animal species for research. Slow rate freezing and rapid freezing/vitrification are the two main methods of cryopreservation. Slow freezing is characterized by the phase transition (liquid turning into solid) when reducing the temperature below freezing point. Vitrification, on the other hand, is a phenomenon in which liquid solidifies without the formation of ice crystals, thus the process is referred to as a glass transition or ice-free cryopreservation. The vitrification protocol applies high concentrations of cryoprotective agents (CPA) used to avoid cryoinjury. This chapter provides a brief overview of fundamentals of cryopreservation and established methods adopted in cryopreservation. Strategies involved in cryopreserving germ cells (sperm and egg freezing) are included in this chapter. Last section describes the frontiers and advancement of cryopreservation in some of the important animal models like rodents (mouse and rats) and in few large animals (sheep, cow etc).
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15
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Hasegawa A, Mochida K, Nakamura A, Miyagasako R, Ohtsuka M, Hatakeyama M, Ogura A. Use of anti-inhibin monoclonal antibody for increasing the litter size of mouse strains and its application to i-GONAD. Biol Reprod 2022; 107:605-618. [PMID: 35368067 PMCID: PMC9382380 DOI: 10.1093/biolre/ioac068] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/08/2022] [Accepted: 03/25/2022] [Indexed: 11/20/2022] Open
Abstract
The litter size of mouse strains is determined by the number of oocytes naturally ovulated. Many attempts have been made to increase litter sizes by conventional superovulation regimens (e.g., using equine or human gonadotropins, eCG/hCG but had limited success because of unexpected decreases in the numbers of embryos surviving to term. Here, we examined whether rat-derived anti-inhibin monoclonal antibodies (AIMAs) could be used for this purpose. When C57BL/6 female mice were treated with an AIMA and mated, the number of healthy offspring per mouse increased by 1.4-fold (11.9 vs. 8.6 in controls). By contrast, treatment with eCG/hCG or anti-inhibin serum resulted in fewer offspring than in nontreated controls. The overall efficiency of production based on all females treated (including nonpregnant ones) was improved 2.4 times with AIMA compared with nontreated controls. The AIMA treatment was also effective in ICR mice, increasing the litter size from 15.3 to 21.2 pups. We then applied this technique to an in vivo genome-editing method (improved genome-editing via oviductal nucleic acid delivery, i-GONAD) to produce C57BL/6 mice deficient for tyrosinase. The mean litter size following i-GONAD increased from 4.8 to 7.3 after the AIMA treatment and genetic modifications were confirmed in 80/88 (91%) of the offspring. Thus, AIMA treatment is a promising method for increasing the litter size of mice and may be applied for the easy proliferation of mouse colonies as well as in vivo genetic manipulation, especially when the mouse strains are sensitive to handling.
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Affiliation(s)
- Ayumi Hasegawa
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Keiji Mochida
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Ayaka Nakamura
- Support Center for Medical Research and Education, Tokai University, Kanagawa, Japan
| | - Rico Miyagasako
- Division of Basic Medical Science and Molecular Medicine, School of Medicine, Tokai University, Kanagawa Japan
| | - Masato Ohtsuka
- Division of Basic Medical Science and Molecular Medicine, School of Medicine, Tokai University, Kanagawa Japan
- The Institute of Medical Sciences, Tokai University, Kanagawa, Japan
| | | | - Atsuo Ogura
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
- Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Center for Disease Biology and Integrative Medicine, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Tokyo, Japan
- RIKEN Cluster for Pioneering Research, Wako, Saitama, Japan
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16
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Irie T. Inclusion Solves Insolubility —Translational Research Cycle from Bedside to Bench and Bench to Bedside for Drug Development Targeting Niemann-Pick Disease Type C—. YAKUGAKU ZASSHI 2022; 142:389-400. [DOI: 10.1248/yakushi.21-00215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Tetsumi Irie
- Graduate School of Life Sciences, Kumamoto University
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17
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Battistella A, Andolfi L, Zanetti M, dal Zilio S, Stebel M, Ricci G, Lazzarino M. Atomic force spectroscopy‐based essay to evaluate oocyte post‐ovulatory ageing. Bioeng Transl Med 2022; 7:e10294. [PMID: 36176606 PMCID: PMC9472013 DOI: 10.1002/btm2.10294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 12/23/2021] [Accepted: 01/10/2022] [Indexed: 12/03/2022] Open
Abstract
Postovulatory aging is a process occurring in the mature (MII) oocyte leading the unfertilized ones to apoptosis. The optimal time window of fertility for different mammalian species after oocytes maturation depends on its timeliness: the higher the time elapsed from the accomplishment of the MII stage, the lower are the chances of fertilization and of development of a viable embryo. In the in vitro fertilization, the selection of competent oocytes for intracytoplasmic sperm injection (ICSI) is mostly made by the visual inspection of the MII oocyte morphology, which does not allow to determine the oocyte postovulatory age. On the other hand, more specific tests usually involve some kind of staining, thus compromising the viability of the oocyte for reproductive purposes. Hence, the need of a noninvasive analysis of oocyte aging to improve the success rate of in vitro fertilization procedures. Here, we exploit atomic force microscopy to examine the evolution of the mechanical properties of mouse oocytes during in vitro postovulatory aging. Three hours before the occurrence of any visual morphological feature related to degradation, we observe a sudden change of the mechanical parameters: the elastic modulus doubles its initial value, while the viscosity decreases significantly. These mechanical variations are temporally correlated with the release of the cortical granules, investigated by fluorescence microscopy. Interestingly, the oocyte mechanics correlates as well with the yield of embryo formation, evaluated up to the blastocyst formation stage. These results demonstrate that minimally invasive mechanical measurements are very sensitive to the aging of the oocyte and can be used as a label‐free method to detect the age of the postovulatory oocytes.
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Affiliation(s)
| | | | | | | | | | - Giuseppe Ricci
- IRCSS Burlo Garofalo Trieste Italy
- Department of Medicine, Surgery and Health Sciences University of Trieste Trieste Italy
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18
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Boersma A, Primus J, Wagner B, Broukal V, Andersen L, Pachner B, Dahlhoff M, Rülicke T, Auer KE. Influence of sperm cryopreservation on sperm motility and proAKAP4 concentration in mice. Reprod Med Biol 2022; 21:e12480. [PMID: 35919386 PMCID: PMC9336535 DOI: 10.1002/rmb2.12480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/13/2022] [Accepted: 07/04/2022] [Indexed: 02/06/2023] Open
Abstract
Background The protein proAKAP4 is crucial for sperm motility and has been suggested as an indicator of male fertility. We determined the relationship between proAKAP4 concentration and sperm motility parameters in mice, and investigated the effects of cryopreservation on these variables. Methods Computer-assisted sperm analysis and ELISA were applied to determine sperm motility and proAKAP4 concentration in fresh and frozen-thawed epididymal sperm of SWISS, B6D2F1, C57BL/6N, and BALB/c mice. Results ProAKAP4 levels ranged between 12 and 89 ng/ml and did not differ between fresh and frozen-thawed samples, or between strains. We found a negative relationship between proAKAP4 levels and some sperm motility parameters. Sperm traits differed between strains, and cryopreservation negatively affected sperm velocity but not sperm direction parameters. Conclusion ProAKAP4 levels in epididymal mouse spermatozoa were unaffected by cryopreservation, highlighting the robustness of this parameter as a potentially time-independent marker for sperm motility and fertility. The high individual variation in proAKAP4 levels supports the potential role of proAKAP4 as a marker for sperm quality, though we found no positive, and even negative relationships between proAKAP4 levels and some sperm motility parameters. Future studies have to investigate the significance of proAKAP4 as an indicator for fertility in mice.
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Affiliation(s)
- Auke Boersma
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Jasmin Primus
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Bettina Wagner
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Veronika Broukal
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
- Department of RadiologyCharité – Universitätsmedizin BerlinBerlinGermany
| | - Lill Andersen
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Barbara Pachner
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Maik Dahlhoff
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Thomas Rülicke
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Kerstin E. Auer
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
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19
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Wigger M, Tröder SE, Zevnik B. A simple and economic protocol for efficient in vitro fertilization using cryopreserved mouse sperm. PLoS One 2021; 16:e0259202. [PMID: 34710162 PMCID: PMC8553151 DOI: 10.1371/journal.pone.0259202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/14/2021] [Indexed: 11/18/2022] Open
Abstract
The advent of genome editing tools like CRISPR/Cas has substantially increased the number of genetically engineered mouse models in recent years. In support of refinement and reduction, sperm cryopreservation is advantageous compared to embryo freezing for archiving and distribution of such mouse models. The in vitro fertilization using cryopreserved sperm from the most widely used C57BL/6 strain has become highly efficient in recent years due to several improvements of the procedure. However, purchase of the necessary media for routine application of the current protocol poses a constant burden on budgetary constraints. In-house media preparation, instead, is complex and requires quality control of each batch. Here, we describe a cost-effective and easily adaptable approach for in vitro fertilization using cryopreserved C57BL/6 sperm. This is mainly achieved by modification of an affordable commercial fertilization medium and a step-by-step description of all other necessary reagents. Large-scale comparison of fertilization rates from independent lines of genetically engineered C57BL/6 mice upon cryopreservation and in vitro fertilization with our approach demonstrated equal or significantly superior fertilization rates to current protocols. Our novel SEcuRe (Simple Economical set-up for Rederivation) method provides an affordable, easily adaptable and harmonized protocol for highly efficient rederivation using cryopreserved C57BL/6 sperm for a broad application of colony management in the sense of the 3Rs.
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Affiliation(s)
- Magdalena Wigger
- Cluster of Excellence Cellular Stress Responses in Aging-Associated Diseases (CECAD), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- in vivo Research Facility, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Simon E. Tröder
- Cluster of Excellence Cellular Stress Responses in Aging-Associated Diseases (CECAD), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- in vivo Research Facility, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- * E-mail: (BZ); (SET)
| | - Branko Zevnik
- Cluster of Excellence Cellular Stress Responses in Aging-Associated Diseases (CECAD), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- in vivo Research Facility, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- * E-mail: (BZ); (SET)
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20
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Liu Y, Zhang C, Wang S, Hu Y, Jing J, Ye L, Jing R, Ding Z. Dependence of sperm structural and functional integrity on testicular calcineurin isoform PPP3R2 expression. J Mol Cell Biol 2021; 12:515-529. [PMID: 31900494 PMCID: PMC7493031 DOI: 10.1093/jmcb/mjz115] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 09/05/2019] [Accepted: 11/27/2019] [Indexed: 01/09/2023] Open
Abstract
After leaving the testis, mammalian sperm undergo a sequential maturation process in the epididymis followed by capacitation during their movement through the female reproductive tract. These phenotypic changes are associated with modification of protein phosphorylation and membrane remodeling, which is requisite for sperm to acquire forward motility and induce fertilization. However, the molecular mechanisms underlying sperm maturation and capacitation are still not fully understood. Herein, we show that PPP3R2, a testis-specific regulatory subunit of protein phosphatase 3 (an isoform of calcineurin in the testis), is essential for sperm maturation and capacitation. Knockout of Ppp3r2 in mice leads to male sterility due to sperm motility impairment and morphological defects. One very noteworthy change includes increases in sperm membrane stiffness. Moreover, PPP3R2 regulates sperm maturation and capacitation via (i) modulation of membrane diffusion barrier function at the annulus and (ii) facilitation of cholesterol efflux during sperm capacitation. Taken together, PPP3R2 plays a critical role in modulating cholesterol efflux and mediating the dynamic control of membrane remodeling during sperm maturation and capacitation.
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Affiliation(s)
- Yue Liu
- Department of Histology, Embryology, Genetics and Developmental Biology, Shanghai Key Laboratory for Reproductive Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Chujun Zhang
- Department of Clinical Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Shiyao Wang
- Department of Clinical Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yanqin Hu
- Department of Histology, Embryology, Genetics and Developmental Biology, Shanghai Key Laboratory for Reproductive Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jia Jing
- Department of Histology, Embryology, Genetics and Developmental Biology, Shanghai Key Laboratory for Reproductive Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Luyao Ye
- Department of Clinical Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ran Jing
- Department of Clinical Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zhide Ding
- Department of Histology, Embryology, Genetics and Developmental Biology, Shanghai Key Laboratory for Reproductive Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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21
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Takei GL, Tourzani DA, Paudel B, Visconti PE. Activation of cAMP-dependent phosphorylation pathways is independent of ROS production during mouse sperm capacitation. Mol Reprod Dev 2021; 88:544-557. [PMID: 34318548 DOI: 10.1002/mrd.23524] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 07/14/2021] [Indexed: 12/26/2022]
Abstract
Mammalian sperm have to undergo capacitation to fertilize the egg. At the molecular level, capacitation involves cAMP synthesis, protein kinase A activation, and downstream increase in tyrosine phosphorylation. In addition, during capacitation, mammalian sperm actively generate reactive oxygen species (ROS). It has been proposed that ROS modulate phosphorylation pathways; however, the crosstalk between these signaling processes is not well-understood. In the present study, we used loss- and gain-of-function approaches to evaluate the interconnection between ROS and phosphorylation. We showed that BSA and HCO3 - , but not Ca2+ , in the capacitation media are required for ROS production. The synergic effect of these compounds was neither mediated by HCO3 - stimulation of cAMP synthesis nor by BSA-induced cholesterol efflux. The capacitation-induced ROS generation was blocked in the presence of superoxide dismutase (SOD), catalase, and apocynin. However, none of these compounds affected cAMP-dependent or tyrosine phosphorylation. On the other hand, the addition of NADPH to the media induced ROS generation in sperm incubated in the absence of BSA and HCO3 - without upregulating cAMP-dependent or tyrosine phosphorylation signaling. Most interestingly, catalase, but not SOD, blocked in vitro fertilization suggesting a role for H2 O2 in this process.
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Affiliation(s)
- Gen L Takei
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Darya A Tourzani
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Bidur Paudel
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Pablo E Visconti
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
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22
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Mochida K, Hasegawa A, Shikata D, Itami N, Hada M, Watanabe N, Tomishima T, Ogura A. Easy and quick (EQ) sperm freezing method for urgent preservation of mouse strains. Sci Rep 2021; 11:14149. [PMID: 34239008 PMCID: PMC8266870 DOI: 10.1038/s41598-021-93604-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 06/28/2021] [Indexed: 11/08/2022] Open
Abstract
Cryopreservation of mouse spermatozoa is widely used for the efficient preservation and safe transport of valuable mouse strains. However, the current cryopreservation method requires special containers (plastic straws), undefined chemicals (e.g., skim milk), liquid nitrogen, and expertise when handling sperm suspensions. Here, we report an easy and quick (EQ) sperm freezing method. The main procedure consists of only one step: dissecting a single cauda epididymis in a microtube containing 20% raffinose solution, which is then stored in a -80 °C freezer. The frozen-thawed spermatozoa retain practical fertilization rates after 1 (51%) or even 3 months (25%) with the C57BL/6 J strain, the most sensitive strain for sperm freezing. More than half of the embryos thus obtained developed into offspring after embryo transfer. Importantly, spermatozoa stored at -80 °C can be transferred into liquid nitrogen for indefinite storage. As far as we know, our EQ method is the easiest and quickest method for mouse sperm freezing and should be applicable in all laboratories without expertise in sperm cryopreservation. This technique can help avoid the loss of irreplaceable strains because of closure of animal rooms in emergency situations such as unexpected microbiological contamination or social emergencies such as the COVID-19 threat.
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Affiliation(s)
- Keiji Mochida
- RIKEN BioResouce Research Center, Tsukuba, Ibaraki, 305-0074, Japan.
| | - Ayumi Hasegawa
- RIKEN BioResouce Research Center, Tsukuba, Ibaraki, 305-0074, Japan
| | - Daiki Shikata
- RIKEN BioResouce Research Center, Tsukuba, Ibaraki, 305-0074, Japan
- Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki, 305- 8572, Japan
| | - Nobuhiko Itami
- RIKEN BioResouce Research Center, Tsukuba, Ibaraki, 305-0074, Japan
| | - Masashi Hada
- RIKEN BioResouce Research Center, Tsukuba, Ibaraki, 305-0074, Japan
| | - Naomi Watanabe
- RIKEN BioResouce Research Center, Tsukuba, Ibaraki, 305-0074, Japan
- Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki, 305- 8572, Japan
| | | | - Atsuo Ogura
- RIKEN BioResouce Research Center, Tsukuba, Ibaraki, 305-0074, Japan.
- Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki, 305- 8572, Japan.
- Center for Disease Biology and Integrative Medicine, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Tokyo, Japan.
- RIKEN Cluster for Pioneering Research, Hirosawa, Wako, Saitama, 351-0198, Japan.
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23
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Hart-Johnson S, Mankelow K. Archiving genetically altered animals: a review of cryopreservation and recovery methods for genome edited animals. Lab Anim 2021; 56:26-34. [PMID: 33847177 DOI: 10.1177/00236772211007306] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
With the ever-expanding numbers of genetically altered (GA) animals created in this new age of CRISPR/Cas, tools for helping the management of this vast and valuable resource are essential. Cryopreservation of embryos and germplasm of GA animals has been a widely used tool for many years now, allowing for the archiving, distribution and colony management of stock. However, each year brings an array of advances, improving survival rates of embryos, success rates of in-vitro fertilisation and the ability to better share lines and refine the methods to preserve them. This article will focus on the mouse field, referencing the latest developments and assessing their efficacy and ease of implementation, with a brief note on other common genetically altered species (rat, zebrafish, Xenopus, avian species and non-human Primates).
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24
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Wuri L, Agca C, Agca Y. Morphometric, subcellular, in vitro fertilisation and embryonic developmental assessment of mouse oocytes produced by anti-inhibin serum or pregnant mare serum gonadotrophin superovulation. Reprod Fertil Dev 2021; 32:474-483. [PMID: 31972126 DOI: 10.1071/rd19131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 08/01/2019] [Indexed: 11/23/2022] Open
Abstract
This study compared the morphometric, subcellular characteristics, in vitro fertilisation (IVF) and embryonic developmental potential of metaphase II (MII) mouse oocytes obtained from females superovulated with either anti-inhibin serum-human chorionic gonadotrophin (AIS-hCG) or pregnant mare serum gonadotrophin (PMSG)-hCG. The oocyte's quantity, quality, zona pellucida (ZP) thickness, perivitelline space (PVS), diameter, microtubules, F-actin, cortical granules (CGs) and mitochondrial distribution were determined. Superovulation using AIS-hCG resulted in a higher numbers of oocyte/donor compared with PMSG-hCG (P=0.002). There was no difference in morphologically normal and abnormal oocytes between AIS-hCG and PMSG-hCG (P=0.425 and P=0.194, respectively). The morphometric measurements showed no difference in oocyte diameter between AIS-hCG and PMSG-hCG (P=0.289). However, the thickness of the ZP of oocytes from AIS-hCG females was decreased compared with PMSG-hCG (P<0.001). The PVS of oocytes from the AIS-hCG was larger than with PMSG-hCG (P<0.001). The microtubules of oocytes from both AIS-hCG and PMSG-hCG were normal, although there was an increased fluorescence intensity in the AIS-hCG oocytes (P<0.001). The F-actin and CGs distribution in oocytes from both AIS-hCG and PMSG-hCG were similar (P=0.330 and P=0.13, respectively). Although the oocytes from PMSG-hCG females had homogenously distributed mitochondria, AIS-hCG oocytes showed more peripheral distribution with no differences in fluorescence intensity (P=0.137). The blastocyst development rates after IVF with fresh sperm showed no difference between AIS-hCG and PMSG-hCG (P=0.235). These data suggested that AIS-hCG superovulation produces high numbers of morphologically normal oocytes that also possess normal subcellular structures, good morphological characteristics and had high invitro embryonic developmental potential.
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Affiliation(s)
- Liga Wuri
- Division of Animal Sciences, University of Missouri, 920 East Campus Drive, Columbia, MO 65201, USA
| | - Cansu Agca
- College of Veterinary Medicine, University of Missouri, 1600 East Rollins Street, Columbia, MO 65211, USA
| | - Yuksel Agca
- Division of Animal Sciences, University of Missouri, 920 East Campus Drive, Columbia, MO 65201, USA; and College of Veterinary Medicine, University of Missouri, 1600 East Rollins Street, Columbia, MO 65211, USA; and Corresponding author.
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Abstract
Germplasm cryobanking of transgenic rodent models is a valuable tool for protecting important genotypes from genetic drift, genetic contamination, and loss of breeding colonies due to disease or catastrophic disasters to the housing facilities as well as avoiding stress associated with domestic and international live animal shipment. Furthermore, cryopreservation of germplasm enhances management efficiencies by saving animal room space, reducing workload for staff, reducing cost of maintaining live animals, reducing the number of animals used to maintain a breeding colony, and facilitating transportation of genetics by allowing distribution of frozen germplasm rather than live animals which also reduces the risk of transfer of pathogens between facilities. Thus, effective long-term preservation methods of mouse spermatozoa are critical for future reconstitution of scientifically important mouse strains used for biomedical research.
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Affiliation(s)
- Yuksel Agca
- College of Veterinary Medicine, University of Missouri, Columbia, MO, USA.
| | - Cansu Agca
- College of Veterinary Medicine, University of Missouri, Columbia, MO, USA
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26
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Molaro A, Wood AJ, Janssens D, Kindelay SM, Eickbush MT, Wu S, Singh P, Muller CH, Henikoff S, Malik HS. Biparental contributions of the H2A.B histone variant control embryonic development in mice. PLoS Biol 2020; 18:e3001001. [PMID: 33362208 PMCID: PMC7757805 DOI: 10.1371/journal.pbio.3001001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/30/2020] [Indexed: 12/15/2022] Open
Abstract
Histone variants expand chromatin functions in eukaryote genomes. H2A.B genes are testis-expressed short histone H2A variants that arose in placental mammals. Their biological functions remain largely unknown. To investigate their function, we generated a knockout (KO) model that disrupts all 3 H2A.B genes in mice. We show that H2A.B KO males have globally altered chromatin structure in postmeiotic germ cells. Yet, they do not show impaired spermatogenesis or testis function. Instead, we find that H2A.B plays a crucial role postfertilization. Crosses between H2A.B KO males and females yield embryos with lower viability and reduced size. Using a series of genetic crosses that separate parental and zygotic contributions, we show that the H2A.B status of both the father and mother, but not of the zygote, affects embryonic viability and growth during gestation. We conclude that H2A.B is a novel parental-effect gene, establishing a role for short H2A histone variants in mammalian development. We posit that parental antagonism over embryonic growth drove the origin and ongoing diversification of short histone H2A variants in placental mammals.
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Affiliation(s)
- Antoine Molaro
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Anna J. Wood
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Howard Hughes Medical Institute, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Derek Janssens
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Selina M. Kindelay
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Howard Hughes Medical Institute, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Michael T. Eickbush
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Howard Hughes Medical Institute, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Steven Wu
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Priti Singh
- Comparative Medicine, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Charles H. Muller
- Male Fertility Laboratory, University of Washington School of Medicine, Seattle, Washington, United States of America
| | - Steven Henikoff
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Howard Hughes Medical Institute, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Harmit S. Malik
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Howard Hughes Medical Institute, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
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27
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Hasegawa A, Mochida K, Matoba S, Inoue K, Hama D, Kadota M, Hiraiwa N, Yoshiki A, Ogura A. Development of assisted reproductive technologies for Mus spretus†. Biol Reprod 2020; 104:234-243. [PMID: 32990726 DOI: 10.1093/biolre/ioaa177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/22/2020] [Accepted: 09/29/2020] [Indexed: 02/04/2023] Open
Abstract
The genus Mus consists of many species with high genetic diversity. However, only one species, Mus musculus (the laboratory mouse), is common in biomedical research. The unavailability of assisted reproductive technologies (ARTs) for other Mus species might be a major reason for their limited use in laboratories. Here, we devised ARTs for Mus spretus (the Algerian mouse), a commonly used wild-derived Mus species. We found that in vitro production of M. spretus embryos was difficult because of low efficacies of superovulation with equine chorionic gonadotropin or anti-inhibin serum (AIS) (5-8 oocytes per female) and a low fertilization rate following in vitro fertilization (IVF; 15.2%). The primary cause of this was the hardening of the zona pellucida but not the sperm's fertilizing ability, as revealed by reciprocal IVF with laboratory mice. The largest number of embryos (16 per female) were obtained when females were injected with AIS followed by human chorionic gonadotropin and estradiol injections 24 h later, and then by natural mating. These in vivo-derived 2-cell embryos could be vitrified/warmed with a high survival rate (94%) using an ethylene glycol-based solution. Importantly, more than 60% of such embryos developed into healthy offspring following interspecific embryo transfer into (C57BL/6 × C3H) F1 female mice. Thus, we have devised practical ARTs for Mus spretus mice, enabling efficient production of embryos and animals, with safe laboratory preservation of their strains. In addition, we have demonstrated that interspecific embryo transfer is possible in murine rodents.
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Affiliation(s)
| | | | - Shogo Matoba
- RIKEN BioResouce Research Center, Tsukuba, Japan
| | - Kimiko Inoue
- RIKEN BioResouce Research Center, Tsukuba, Japan.,Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Japan
| | - Daiki Hama
- RIKEN BioResouce Research Center, Tsukuba, Japan
| | | | | | | | - Atsuo Ogura
- RIKEN BioResouce Research Center, Tsukuba, Japan.,Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Japan.,Center for Disease Biology and Integrative Medicine, Faculty of Medicine, University of Tokyo, Tokyo, Japan.,RIKEN Cluster for Pioneering Research, Saitama, Japan
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28
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Takeo T, Nakao S, Nakagawa Y, Sztein JM, Nakagata N. Cryopreservation of mouse resources. Lab Anim Res 2020; 36:33. [PMID: 32963977 PMCID: PMC7495967 DOI: 10.1186/s42826-020-00066-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 09/10/2020] [Indexed: 01/19/2023] Open
Abstract
The cryopreservation of sperm and embryos is useful to efficiently archive valuable resources of genetically engineered mice. Till date, more than 60,000 strains of genetically engineered mice have been archived in mouse banks worldwide. Researchers can request for the archived mouse strains for their research projects. The research infrastructure of mouse banks improves the availability of mouse resources, the productivity of research projects, and the reproducibility of animal experiments. Our research team manages the mouse bank at the Center for Animal Resources and Development in Kumamoto University and continuously develops new techniques in mouse reproductive technology to efficiently improve the system of mouse banking. In this review, we introduce the activities of mouse banks and the latest techniques used in mouse reproductive technology.
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Affiliation(s)
- Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, 2-2-1 Honjo, Kumamoto, 860-0811 Japan
| | - Satohiro Nakao
- Division of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, 2-2-1 Honjo, Kumamoto, 860-0811 Japan
| | - Yoshiko Nakagawa
- Division of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, 2-2-1 Honjo, Kumamoto, 860-0811 Japan
| | - Jorge M Sztein
- Division of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, 2-2-1 Honjo, Kumamoto, 860-0811 Japan
| | - Naomi Nakagata
- Division of Reproductive Biotechnology and Innovation, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan
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29
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Jang S, Lee S, Park H. β-Cyclodextrin Inhibits Monocytic Adhesion to Endothelial Cells through Nitric Oxide-Mediated Depletion of Cell Adhesion Molecules. Molecules 2020; 25:molecules25163575. [PMID: 32781622 PMCID: PMC7464935 DOI: 10.3390/molecules25163575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/03/2020] [Accepted: 08/05/2020] [Indexed: 11/16/2022] Open
Abstract
Cyclodextrins (CDs) are used as drug delivery agents. In this study, we examined whether CDs have an inflammatory effect on endothelial cells. First, we found that β-CD promoted cell proliferation in bovine aortic endothelial cells and elevated nitric oxide (NO) production through dephosphorylation of threonine-495 (T-495) in endothelial nitric oxide synthetase (eNOS). Dephosphorylation of T-495 is known to activate eNOS. Phosphorylation of T-495 was found to be catalyzed by protein kinase Cε (PKCε). We then found that β-CD inhibits binding of PKCε to diacylglycerol (DAG) via formation of a β-CD-DAG complex, indicating that β-CD inactivates PKCε. Furthermore, β-CD controls activation of PKCε by reducing the recruitment of PKCε into the plasma membrane. Finally, β-CD inhibits expression of intercellular and vascular cell adhesion molecule-1 by increasing NO via control of PKCε/eNOS and suppression of THP-1 cell adhesion to endothelial cells. These findings imply that β-CD plays an important role in anti-inflammatory processes.
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Affiliation(s)
| | | | - Heonyong Park
- Correspondence: ; Tel.: +82-41-550-3489; Fax: +82-41-559-7941
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30
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Bernabò N, Valbonetti L, Raspa M, Fontana A, Palestini P, Botto L, Paoletti R, Fray M, Allen S, Machado-Simoes J, Ramal-Sanchez M, Pilato S, Scavizzi F, Barboni B. Graphene Oxide Improves in vitro Fertilization in Mice With No Impact on Embryo Development and Preserves the Membrane Microdomains Architecture. Front Bioeng Biotechnol 2020; 8:629. [PMID: 32612987 PMCID: PMC7308453 DOI: 10.3389/fbioe.2020.00629] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/22/2020] [Indexed: 12/04/2022] Open
Abstract
During the latest years, human infertility worsened all over the world and is nowadays reputed as a global public health issue. As a consequence, the adoption of Assisted Reproductive Technologies (ARTs) such as In Vitro Fertilization (IVF) is undergoing an impressive increase. In this context, one of the most promising strategies is the innovative adoption of extra-physiological materials for advanced sperm preparation methods. Here, by using a murine model, the addition of Graphene Oxide (GO) at a specific concentration has demonstrated to increase the spermatozoa fertilizing ability in an IVF assay, finding that 0.5 μg/ml GO addition to sperm suspensions before IVF is able to increase both the number of fertilized oocytes and embryos created with a healthy offspring given by Embryo Transplantation (ET). In addition, GO treatment has been found more effective than that carried out with methyl-β-cyclodextrin, which represents the gold standard in promoting in vitro fertility of mice spermatozoa. Subsequent biochemical characterization of its interaction with male gametes has been additionally performed. As a result, it was found that GO exerts its positive effect by extracting cholesterol from membranes, without affecting the integrity of microdomains and thus preserving the sperm functions. In conclusion, GO improves IVF outcomes in vitro and in vivo, defining new perspectives for innovative strategies in the treatment of human infertility.
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Affiliation(s)
- Nicola Bernabò
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy.,National Research Council - Institute of Biochemistry and Cell Biology, Rome, Italy
| | - Luca Valbonetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy.,National Research Council - Institute of Biochemistry and Cell Biology, Rome, Italy
| | - Marcello Raspa
- National Research Council - Institute of Biochemistry and Cell Biology, Rome, Italy
| | - Antonella Fontana
- Department of Pharmacy, D'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Paola Palestini
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Laura Botto
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | | | | | | | - Juliana Machado-Simoes
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Marina Ramal-Sanchez
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Serena Pilato
- Department of Pharmacy, D'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Ferdinando Scavizzi
- National Research Council - Institute of Biochemistry and Cell Biology, Rome, Italy
| | - Barbara Barboni
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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31
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Goto M, Takeo T, Takahashi R, Nakagata N. Efficient production of immunodeficient non-obese diabetic/Shi-scid IL2rγnull mice via the superovulation technique using inhibin antiserum and gonadotropin. Lab Anim 2020; 55:13-20. [PMID: 32507045 DOI: 10.1177/0023677220928091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Severe immunodeficient mice are an essential tool for the examination of the efficacy and safety of new therapeutic technologies as a humanized model. Previously, non-obese diabetic (NOD)/Shi-scid IL2rγnull (NOG) mice were established as immunodeficient mice by combining interleukin-2 receptor-γ chain-knockout mice and NOD/Shi-scid mice. The NOG mice are used frequently in the research of therapeutic monoclonal antibodies and regenerative medicine for human diseases. Establishment of an efficient production system of NOG mice, using optimized reproductive techniques, is required to accelerate research. In this study, we investigated the efficacy of the superovulation technique using equine chorionic gonadotropin (eCG) and inhibin antiserum (IAS) in NOG mice of various ages (4, 8, 12, 24, or 54 weeks). Additionally, we examined the fertilizing and developmental ability of the oocytes through in-vitro fertilization using frozen-thawed sperm, embryo culture and embryo transfer. The results showed that NOG mice produced the highest number of oocytes at 12 weeks old following the co-administration of eCG and IAS (collectively IASe) (70 oocytes/female). IASe was more effective in increasing the number of oocytes v. eCG at all ages. The IASe-derived oocytes demonstrated the ability to fertilize and develop into blastocysts and pups. Finally, we demonstrated that three strains of genetically modified NOG mice were efficiently produced through the optimized reproductive techniques. In summary, we developed an efficient system for the production of immunodeficient mice using 12-week-old, IASe-treated female NOG mice.
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Affiliation(s)
- Motohito Goto
- 13565Central Institute for Experimental Animals (CIEA), Japan.,Center for Animal Resources and Development (CARD), Kumamoto University, Japan
| | - Toru Takeo
- Center for Animal Resources and Development (CARD), Kumamoto University, Japan
| | | | - Naomi Nakagata
- Center for Animal Resources and Development (CARD), Kumamoto University, Japan
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32
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Successful selection of mouse sperm with high viability and fertility using microfluidics chip cell sorter. Sci Rep 2020; 10:8862. [PMID: 32483250 PMCID: PMC7264210 DOI: 10.1038/s41598-020-65931-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 05/11/2020] [Indexed: 02/06/2023] Open
Abstract
Cell sorting via flow cytometry is a powerful tool to select subpopulations of cells in many biological fields. Selection of fertilisation-prone sperm is a critical step to ensure a stable and high fertilisation rate in in vitro fertilisation (IVF). However, a combination of conventional cell sorting and IVF system has not been established because of severe mechanical damages to the sperm during the sorting process. A cell sorter with microfluidics chip technology that lessens cell damage during cell sorting may address this problem. We evaluated the effects of microfluidics chip cell sorting on the sperm using the parameters, such as motility and fertility, and found this cell sorting method had minimal harmful effect on the sperm. Then, sperm were selected by a marker for acrosome reaction and showed higher fertilisation rate than that of the population of acrosome-intact sperm. Embryo derived from these sperm developed normally. These results indicated that microfluidics chip cell sorting can select fertile sperm to improve IVF technique.
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33
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Adeoye O, Bártolo I, Conceição J, da Silva AB, Duarte N, Francisco AP, Taveira N, Cabral-Marques H. Pyromellitic dianhydride crosslinked soluble cyclodextrin polymers: Synthesis, lopinavir release from sub-micron sized particles and anti-HIV-1 activity. Int J Pharm 2020; 583:119356. [PMID: 32325245 DOI: 10.1016/j.ijpharm.2020.119356] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/30/2020] [Accepted: 04/18/2020] [Indexed: 12/24/2022]
Abstract
We report the synthesis of water soluble cyclodextrin (CD) polymers prepared by crosslinking pyromellitic dianhydride (PMDA) with two CD derivatives (methyl-β-CD - MβCD and (2-hydroxy)propyl-β-CD - HPβCD) and their evaluation as functional sub-micron sized carriers in the development of antiretroviral drug delivery systems. Using the protease inhibitor lopinavir (LPV) as model drug, LPV loaded CD polymers (pHPβCD and pMβCD) were prepared and fully characterized. The physicochemical characterization and in vitro drug release confirmed the successful synthesis of pHPβCD and pMβCD, the formation of sub-micron sized particles and a 12-14 fold increase in LPV solubility. Cytotoxicity assays indicated that both pHPβCD and pMβCD were able to improve the safety profile of LPV while the viral infectivity assay revealed a concentration independent anti-HIV-1 effect for both pHPβCD and pMβCD with a maximum percentage inhibition (MPI) of 79 and 91% respectively. After LPV loading, the antiviral profile of pHPβCD was reversed to the sigmoidal dose-response profile of LPV, while pMβCD maintained its dose-independent profile followed by a LPV mediated increase in viral inhibition. Overall, both pHPβCD and pMβCD demonstrated anti-HIV-1 activity, while drug loaded pMβCD indicated its potential as functional sub-micron sized drug delivery polymers for achieving synergistic anti-HIV activity.
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Affiliation(s)
- Oluwatomide Adeoye
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Inês Bártolo
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Jaime Conceição
- UCIBIO/REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Oporto, Portugal
| | - Andreia Bento da Silva
- Faculdade de Farmácia da Universidade de Lisboa (FFULisboa), Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Noélia Duarte
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Paula Francisco
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Nuno Taveira
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal; Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Caparica, Portugal
| | - Helena Cabral-Marques
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal.
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34
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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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35
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Hosotani M, Ichii O, Nakamura T, Masum MA, Otani Y, Elewa YHA, Kon Y. Altered ciliary morphofunction in the oviductal infundibulum of systemic autoimmune disease-prone MRL/MpJ-Faslpr/lpr mice. Cell Tissue Res 2020; 380:627-641. [DOI: 10.1007/s00441-020-03175-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 01/20/2020] [Indexed: 12/11/2022]
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36
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Abstract
Cryobanking of sperm, oocytes, and embryos is a useful means to efficiently maintain mouse colonies without breeding live animals. Cryopreserved cells can be permanently stored in well-managed systems in liquid nitrogen tanks at -196 °C and quickly reanimated for use via in vitro fertilization and/or embryo transfer. Recent improvements of reproductive technology markedly enhanced the efficiency of recovering and producing animals using cryopreserved cells. The establishment of a cryobanking system will increase the performance of animal experiments, meet the principles of 3Rs (replacement, reduction, and refinement), and reduce labour and costs. In this chapter, we described the latest techniques of sperm cryopreservation, in vitro fertilization, and oocyte and two-cell embryo vitrification developed at the Center for Animal Resources and Development (CARD).
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Affiliation(s)
- Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto-shi, Japan.
| | - Naomi Nakagata
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Chuo-ku, Kumamoto-shi, Japan
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37
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Sugiyama Y, Fujinoki M, Shibahara H. Effects of 5-hydroxytryptamine on spermatozoal hyperactivation and in vitro fertilization in mice. J Reprod Dev 2019; 65:541-550. [PMID: 31694987 PMCID: PMC6923157 DOI: 10.1262/jrd.2019-082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In this study, we examined the effects of 5-hydroxytryptamine (5-HT) on the motility and hyperactivation of mouse spermatozoa. In addition, we examined whether 5-HT increases the success of
in vitro fertilization (IVF) in mice. Interestingly, 5-HT and agonists of the 5-HT2, 5-HT3, 5-HT4, and 5-HT7 receptors
significantly increased the percentage of hyperactivated spermatozoa but did not affect the percentage of motile spermatozoa. Moreover, agonists of the 5-HT2, 5-HT3,
and 5-HT4 receptors significantly affected the velocities, linearity, straightness, wobbler coefficient, amplitude and/or frequency of spermatozoa. In particular, the improvement
of hyperactivation by 5-HT was strongly inhibited by antagonists of the receptors 5-HT4 and 5-HT7 and was completely inhibited by a mixture of the four 5-HT-receptor
antagonists. The increase in hyperactivation by the agonists was significantly inhibited by the corresponding 5-HT-receptor antagonist. Moreover, 5-HT significantly increased the percentage
of two-cell embryos. The increase in the IVF success rate by 5-HT was significantly inhibited by a 5-HT4-receptor antagonist. These results suggest that 5-HT increased
hyperactivation through the 5-HT receptors and increased the success of IVF in mice.
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Affiliation(s)
- Yukiko Sugiyama
- Department of Obstetrics and Gynecology, Hyogo College of Medicine, Hyogo 663-8501, Japan
| | - Masakatsu Fujinoki
- Department of Physiology, School of Medicine, Dokkyo Medical University, Tochigi 321-0293, Japan.,Laboratory Animal Research Center, Dokkyo Medical University, Tochigi 321-0293, Japan
| | - Hiroaki Shibahara
- Department of Obstetrics and Gynecology, Hyogo College of Medicine, Hyogo 663-8501, Japan
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38
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Nakagata N, Takeo T. Basic mouse reproductive techniques developed and modified at the Center for Animal Resources and Development (CARD), Kumamoto University. Exp Anim 2019; 68:391-395. [PMID: 31243193 PMCID: PMC6842795 DOI: 10.1538/expanim.19-0070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The Center for Animal Resources and Development (CARD), Kumamoto University was
established in 1998. We provide advanced research support services for the mouse-based
biomedical research community via an official and a premium mouse bank system. To
efficiently manage these mouse banks, we have actively developed and modified basic mouse
reproductive techniques. We shall introduce these techniques in this paper.
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Affiliation(s)
- 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
| | - 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
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39
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Simple Transportation of Genetically Engineered Mice via Cold Storage Techniques. Methods Mol Biol 2019. [PMID: 31512219 DOI: 10.1007/978-1-4939-9837-1_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Live genetically modified (GM) mice are often shipped in transportation cages. However, the shipment of live mice is sometimes associated with difficulties. Recently, we developed an alternative means to transport GM mice via cold storage techniques for sperm and embryos. Cold storage of the cauda epididymis, the male reproductive organ for storing mature sperm, can maintain the fertility of sperm in cold preservation medium for 10 days. The sperm can then be used to produce embryos or pups via in vitro fertilization and embryo transfer. Conversely, cold-stored two-cell embryos maintain developmental ability for 4 days. The embryos can be used to produce pups via embryo transfer. Cold transport techniques are being increasingly employed to create local and global networks between research institutes for the shipment of GM mice. In this text, we described a cold transport technique for sperm and two-cell embryos in mice.
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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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BODIPY-cholesterol can be reliably used to monitor cholesterol efflux from capacitating mammalian spermatozoa. Sci Rep 2019; 9:9804. [PMID: 31285440 PMCID: PMC6614389 DOI: 10.1038/s41598-019-45831-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 06/11/2019] [Indexed: 02/06/2023] Open
Abstract
Capacitation is the final maturation step spermatozoa undergo prior to fertilisation. The efflux of cholesterol from the sperm membrane to the extracellular environment is a crucial step during capacitation but current methods to quantify this process are suboptimal. In this study, we validate the use of a BODIPY-cholesterol assay to quantify cholesterol efflux from spermatozoa during in vitro capacitation, using the boar as a model species. The novel flow cytometric BODIPY-cholesterol assay was validated with endogenous cholesterol loss as measured by mass spectrometry and compared to filipin labelling. Following exposure to a range of conditions, the BODIPY-cholesterol assay was able to detect and quantify cholesterol efflux akin to that measured with mass spectrometry. The ability to counterstain for viability is a unique feature of this assay that allowed us to highlight the importance of isolating viable cells only for a reliable measure of cholesterol efflux. Finally, the BODIPY-cholesterol assay proved to be the superior method to quantify cholesterol efflux relative to filipin labelling, though filipin remains useful for assessing cholesterol redistribution. Taken together, the BODIPY-cholesterol assay is a simple, inexpensive and reliable flow cytometric method for the measurement of cholesterol efflux from spermatozoa during in vitro capacitation.
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Bernecic NC, Gadella BM, Leahy T, de Graaf SP. Novel methods to detect capacitation-related changes in spermatozoa. Theriogenology 2019; 137:56-66. [PMID: 31230703 DOI: 10.1016/j.theriogenology.2019.05.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Prior to interaction with the oocyte, spermatozoa must undergo capacitation, which involves a series of physio-chemical transformations that occur in the female tract. As capacitation is a pre-requisite for successful fertilisation, it is a topic of great interest for sperm biologists, but the complexity of the numerous biochemical and biophysical processes involved make it difficult to measure. Capacitation is an extremely complex event that encompasses numerous integrated processes that can occur concurrently during this window of time. The identification of techniques to accurately assess and quantify capacitation is therefore crucial to gain a meaningful insight into this fascinating sperm maturation event. Whilst there are extensive reviews in the literature that focus on the functional changes to spermatozoa during capacitation, few have examined the methods required to measure these changes. The aim of this review is to highlight frequently used methods to quantify different stages of capacitation and identify promising novel techniques. Factors that are able to modulate various capacitation processes will also be discussed. The overall outcome is to provide researchers with a toolbox of methods that can be used to gain a deeper understanding of the intricacies of capacitation in spermatozoa.
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Affiliation(s)
- Naomi C Bernecic
- The University of Sydney, Faculty of Science, NSW, 2006, Australia.
| | - Bart M Gadella
- Department of Biochemistry & Cell Biology, Utrecht University, the Netherlands; Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, the Netherlands
| | - Tamara Leahy
- The University of Sydney, Faculty of Science, NSW, 2006, Australia
| | - Simon P de Graaf
- The University of Sydney, Faculty of Science, NSW, 2006, Australia
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Wuri L, Agca C, Agca Y. Euthanasia via CO 2 inhalation causes premature cortical granule exocytosis in mouse oocytes and influences in vitro fertilization and embryo development. Mol Reprod Dev 2019; 86:825-834. [PMID: 31087431 DOI: 10.1002/mrd.23167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/12/2019] [Indexed: 11/08/2022]
Abstract
Generation of high quality mouse metaphase II oocytes is an integral part for efficient in vitro fertilization (IVF), and subsequent embryo production for reproductive studies and genome banking. The main objectives of this study were to investigate the impact of various euthanasia methods on IVF, embryo development, and subcellular structures of MII mouse oocytes. Following superovulation regimen, female mice were euthanized by high flow CO2 (H CO2 ), low flow CO2 (L CO2 ), or cervical dislocation (CD). The MII oocytes obtained from these mice were evaluated for subcellular integrity by assessing their cortical granules and F-actin. Furthermore, fertilization and subsequent embryonic development competence up to blastocyst stage were also evaluated in vitro. The oocytes collected from females euthanized by CD resulted in significantly higher two-cell development rates (p = 0.028) and subsequently lead to in higher embryo development rates (p = 0.027) compared with oocytes from females euthanized by L CO2 . The cortical granule integrity analysis revealed significantly higher rate of premature cortical granules exocytosis (PCGE) for L CO2 group compared with CD and H CO2 groups (p < 0.001). These data collectively suggest that CO2 associated PCGE during euthanasia procedure is the main cause of decreased IVF rates and CD is the optimal euthanasia method for the purpose of obtaining good quality MII oocytes for mouse IVF and other reproductive studies.
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Affiliation(s)
- Liga Wuri
- Division of Animal Sciences, University of Missouri, Columbia, Missouri
| | - Cansu Agca
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, Missouri
| | - Yuksel Agca
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, Missouri
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Intergenerational transmission of the positive effects of physical exercise on brain and cognition. Proc Natl Acad Sci U S A 2019; 116:10103-10112. [PMID: 31010925 DOI: 10.1073/pnas.1816781116] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Physical exercise has positive effects on cognition, but very little is known about the inheritance of these effects to sedentary offspring and the mechanisms involved. Here, we use a patrilineal design in mice to test the transmission of effects from the same father (before or after training) and from different fathers to compare sedentary- and runner-father progenies. Behavioral, stereological, and whole-genome sequence analyses reveal that paternal cognition improvement is inherited by the offspring, along with increased adult neurogenesis, greater mitochondrial citrate synthase activity, and modulation of the adult hippocampal gene expression profile. These results demonstrate the inheritance of exercise-induced cognition enhancement through the germline, pointing to paternal physical activity as a direct factor driving offspring's brain physiology and cognitive behavior.
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Nakata K, Yoshida K, Yamashita N. Preclinical evaluation of a new cryopreservation container for a limited number of human spermatozoa. J Reprod Dev 2019; 65:297-304. [PMID: 30971616 PMCID: PMC6708847 DOI: 10.1262/jrd.2017-086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to develop a new container for cryopreservation of a limited number of spermatozoa. To evaluate the efficacy and safety of this new container, we performed preclinical evaluations using human sperm or mouse oocytes and sperm. First, using human sperm that was frozen and then thawed, we demonstrated that the sperm recovery rate using the new container was 96.7% (58/60), which was significantly higher (P < 0.05) than the recovery rate of 21.2% (11/52) when using the Cryotop®. Sperm motility rates were 19.2% (10/52) using the Cryotop® and 35.0% (21/60) using the new container. Second, murine epididymal spermatozoa were divided into three groups: fresh spermatozoa, spermatozoa frozen using a straw, and spermatozoa frozen using the new container. Sperm motility, sperm membrane and DNA integrity, in vitro development of fertilized eggs, and offspring development after embryo transfer were assessed. The motility of freeze-thawed sperm was lower in spermatozoa that were frozen using the new container than in fresh spermatozoa or those that were frozen using a straw. After intracytoplasmic sperm injection, the survival rate was 96.7% (145/150), the 2-cell development rate was 90.3% (131/145), and the blastocyst development rate was 77.2% (112/145), when using the new container. There were no differences in the sperm membrane, DNA integrity, or in the embryo development rates to the blastocyst stage among the different frozen groups. Six offspring were derived from spermatozoa freeze-thawed in the new container, and they developed normally. Thus, the new container allows easy handling of a small number of sperms and minimizes sperm loss during cryopreservation.
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Affiliation(s)
- Kumiko Nakata
- Reproductive Medicine Research Center, Yamashita Shonan Yume Clinic, Kanagawa 251-0025, Japan.,Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Kaoru Yoshida
- Faculty of Biomedical Engineering, Toin University of Yokohama, Kanagawa 225-8503, Japan
| | - Naoki Yamashita
- Reproductive Medicine Research Center, Yamashita Shonan Yume Clinic, Kanagawa 251-0025, Japan
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Higashi T. Cyclodextrin-Based Molecular Accessories for Drug Discovery and Drug Delivery. Chem Pharm Bull (Tokyo) 2019; 67:289-298. [DOI: 10.1248/cpb.c18-00735] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Taishi Higashi
- Priority Organization for Innovation and Excellence, Kumamoto University
- Graduate School of Pharmaceutical Sciences, Kumamoto University
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Bai C, Kang N, Zhao J, Dai J, Gao H, Chen Y, Dong H, Huang C, Dong Q. Cryopreservation disrupts lipid rafts and heat shock proteins in yellow catfish sperm. Cryobiology 2019; 87:32-39. [PMID: 30876909 DOI: 10.1016/j.cryobiol.2019.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/06/2019] [Accepted: 03/08/2019] [Indexed: 11/25/2022]
Abstract
Lipid rafts and associated membrane proteins (flotillin, caveolin) play important roles in cell signaling and sperm fertilization while heat shock proteins (Hsp) ensure properly protein folding to fulfill their physiological functions. The markedly reduced fertility in thawed sperm after cryopreservation could result from disrupted membrane lipid rafts and these proteins. To explore the effect of sperm cryopreservation on lipid rafts and heat shock proteins, we compared lipid raft integrity, and the expression levels of lipid raft associated proteins (Flot-1, Flot-2, Cav-1) as well as heat shock proteins (Hsp90, Hsp70) in fresh and thawed sperm cryopreserved under different scenarios in yellow catfish. We found higher lipid raft integrity, higher protein expression levels of Flot-1, Flot-2, Cav-1, Hsp90, and Hsp70 in fresh sperm samples than in thawed sperm samples, in thawed sperm samples cryopreserved with optimal cooling rate than those cryopreserved with sub-optimal cooling rate, and in thawed sperm samples cryopreserved with extenders supplemented with cholesterol than those supplemented with methyl-β-cyclodextrin (for cholesterol removal). Our findings indicate that lipid raft integrity, and expression levels of Flot-1, Flot-2, Cav-1, Hsp90, and Hsp70 are clearly associated with sperm quality, and together they may play a cumulative role in reduced fertility associated with thawed sperm in aquatic species.
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Affiliation(s)
- Chenglian Bai
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Ning Kang
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Junping Zhao
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Jun Dai
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Hui Gao
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Yuanhong Chen
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Haojia Dong
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Changjiang Huang
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Qiaoxiang Dong
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China.
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Yoshimoto H, Takeo T, Nakagata N. Dimethyl sulfoxide and quercetin prolong the survival, motility, and fertility of cold-stored mouse sperm for 10 days. Biol Reprod 2019; 97:883-891. [PMID: 29126179 PMCID: PMC5803767 DOI: 10.1093/biolre/iox144] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/07/2017] [Indexed: 12/15/2022] Open
Abstract
Technology for preserving sperm is useful for disseminating valuable male genetic traits. Cold storage is suitable for easily transporting sperm as an alternative to the shipment of live animals. However, there is a technical limitation in that the fertility of cold-stored sperm declines within 3 days. To overcome this problem, we examined the protective effects of quercetin and dimethyl sulfoxide (DMSO). DMSO and quercetin maintained the fertility and motility of cold-stored sperm for 10 days. In addition, quercetin attenuated the reduction of mitochondrial membrane potential of cold-stored sperm during sperm preincubation, allowing the induction of capacitation, and it localized to the midpiece of sperm. Furthermore, DMSO and quercetin enhanced the level of tyrosine phosphorylation of cold-stored sperm. DMSO and quercetin have life-prolonging effects on sperm during cold storage. Cold storage using DMSO and quercetin will provide a robust system for internationally transporting valuable sperm samples.
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Affiliation(s)
- Hidetaka Yoshimoto
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Kumamoto, Japan
| | - Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Kumamoto, Japan
| | - Naomi Nakagata
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Kumamoto, Japan
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Hosotani M, Ichii O, Nakamura T, Masum MA, Otani Y, Otsuka-Kanazawa S, Elewa YHA, Kon Y. MRL/MpJ mice produce more oocytes and exhibit impaired fertilisation and accelerated luteinisation after superovulation treatment. Reprod Fertil Dev 2019; 31:760-773. [DOI: 10.1071/rd18319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 11/09/2018] [Indexed: 11/23/2022] Open
Abstract
MRL/MpJ mice exhibit distinct phenotypes in several biological processes, including wound healing. Herein we report two unique phenotypes in the female reproductive system of MRL/MpJ mice that affect ovulation and luteinisation. We found that superovulation treatment resulted in the production of significantly more oocytes in MRL/MpJ than C57BL/6 mice (71.0±13.4 vs 26.8±2.8 respectively). However, no exon mutations were detected in genes coding for female reproductive hormones or their receptors in MRL/MpJ mice. In addition, the fertilisation rate was lower for ovulated oocytes from MRL/MpJ than C57BL/6 mice, with most of the fertilised oocytes showing abnormal morphology, characterised by deformation and cytolysis. Histological tracing of luteinisation showed that MRL/MpJ mice formed corpora lutea within 36h after ovulation, whereas C57BL/6 mice were still at the corpora haemorrhagica formation stage after 36h. The balance between the expression of matrix metalloproteinases and their tissue inhibitors shifted towards the former earlier after ovulation in MRL/MpJ than C57BL/6 mice. This result indicates a possible link between accelerated extracellular matrix remodelling in the ovulated or ruptured follicles and luteinisation in MRL/MpJ mice. Together, these findings reveal novel phenotypes in MRL/MpJ mice that provide novel insights into reproductive biology.
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Takeo T, Sztein J, Nakagata N. The CARD Method for Mouse Sperm Cryopreservation and In Vitro Fertilization Using Frozen-Thawed Sperm. Methods Mol Biol 2019; 1874:243-256. [PMID: 30353518 DOI: 10.1007/978-1-4939-8831-0_14] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In the last few years sperm cryopreservation was rapidly established as the technique to efficiently manage production, preservation, and transportation of genetically engineered mice. However, occasionally, the reduced fertility of the frozen-thawed mouse sperm can make it difficult to revitalize the mouse by in vitro fertilization (IVF). In particular, the frozen-thawed sperm of C57BL/6 mice, widely used as the background of choice for genetically engineered strains, show very low fertility after freezing and thawing. To overcome this problem, we have developed a new protocol for sperm cryopreservation and IVF with frozen-thawed C57BL/6 sperm as well as other mouse strains. This protocol has the following three modifications: (1) addition of L-glutamine to the sperm cryoprotectant, (2) addition of methyl-β-cyclodextrin to the sperm preincubation medium, and (3) addition of reduced glutathione to the fertilization medium. These modifications greatly enhanced the fertility of frozen-thawed C57BL/6 sperm, resulting in a stable fertilization rate >80% in IVF. Our results indicate that this robust protocol for sperm cryopreservation may improve the archiving and distributing system for genetically engineered mice.
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Affiliation(s)
- Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Kumamoto, Japan.
| | - Jorge Sztein
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Kumamoto, Japan
| | - Naomi Nakagata
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Kumamoto, Japan
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