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Lee DY, Lee SY, Yun SH, Jeong JW, Kim JH, Kim HW, Choi JS, Kim GD, Joo ST, Choi I, Hur SJ. Review of the Current Research on Fetal Bovine Serum and the
Development of Cultured Meat. Food Sci Anim Resour 2022; 42:775-799. [PMID: 36133630 PMCID: PMC9478980 DOI: 10.5851/kosfa.2022.e46] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/12/2022] [Accepted: 08/15/2022] [Indexed: 11/19/2022] Open
Abstract
The purpose of this review is to summarize studies that investigate blood and the
main components of fetal bovine serum (FBS) in vertebrates, including major
livestock, and review the current research on commercializing cultured meat.
Detailed research on FBS is still lacking; however, some studies have shown that
FBS consists of proteins, carbohydrates, growth factors, cytokines, fats,
vitamins, minerals, hormones, non-protein nitrogen, and inorganic compounds.
However, there are few studies on how the composition of FBS differs from blood
or serum composition in adult animals, which is probably one of the main reasons
for not successfully replacing FBS. Moreover, recent studies on the development
of FBS replacers and serum-free media have shown that it is difficult to
conclude whether FBS has been completely replaced or serum-free media have been
developed successfully. Our review of the industrialization of cultured meat
reveals that many basic studies on the development of cultured meat have been
conducted, but it is assumed that the study to reduce or replace ingredients
derived from fetuses such as FBS has not yet been actively developed. Therefore,
developing inexpensive and edible media is necessary for the successful
industrialization of cultured meat.
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Affiliation(s)
- Da Young Lee
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Seung Yun Lee
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Seung Hyeon Yun
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Jae Won Jeong
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Jae Hyeon Kim
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Hyun Woo Kim
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Jung Seok Choi
- Department of Animal Science, Chungbuk
National University, Cheongju 28644, Korea
| | - Gap-Don Kim
- Graduate School of International
Agricultural Technology, Institutes of Green Bio Science and Technology,
Seoul National University, Pyeongchang 25354, Korea
| | - Seon Tea Joo
- Division of Applied Life Science (BK21
Four), Institute of Agriculture & Life Science, Gyeongsang National
University, Jinju 52828, Korea
| | - Inho Choi
- Department of Medical Biotechnology,
Yeungnam University, Gyeongsan 38541, Korea
| | - Sun Jin Hur
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
- Corresponding author: Sun Jin
Hur, Department of Animal Science and Technology, Chung-Ang University, Anseong
17546, Korea, Tel: +82-31-670-4673, Fax: +82-31-670-3108, E-mail:
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Effect of Interleukin-7 on In Vitro Maturation of Porcine Cumulus-Oocyte Complexes and Subsequent Developmental Potential after Parthenogenetic Activation. Animals (Basel) 2021; 11:ani11030741. [PMID: 33800509 PMCID: PMC8001781 DOI: 10.3390/ani11030741] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/02/2021] [Accepted: 03/06/2021] [Indexed: 12/30/2022] Open
Abstract
Simple Summary Oocyte-secreted factors play an essential role in oogenesis and fertility through bidirectional crosstalk between oocytes and somatic cells. Interleukin-7, known as an oocyte-secreted factor, has recently been shown to improve oocyte developmental competence through interaction with cumulus cells around the oocytes. This study aimed to investigate the effects of interleukin-7 on porcine cumulus-oocyte complexes during in vitro maturation. Our results showed that supplementation with interleukin-7 during in vitro maturation exerted beneficial effects on porcine oocyte meiotic maturation by upregulating antioxidant-related genes and enhanced the subsequent developmental potential of porcine embryos after parthenogenetic activation. Abstract Interleukin-7 (IL-7) is a cytokine essential for cell development, proliferation and survival. However, its role in oocyte maturation is largely unknown. To investigate the effects of IL-7 on the in vitro maturation (IVM) of porcine oocytes, we analyzed nuclear maturation, intracellular glutathione (GSH) and reactive oxygen species (ROS) levels, and subsequent embryonic developmental competence after parthenogenetic activation (PA) under several concentrations of IL-7. After IVM, IL-7 treated groups showed significantly higher nuclear maturation and significantly decreased intracellular ROS levels compared with the control group. All IL-7 treatment groups exhibited significantly increased intracellular GSH levels compared with the control group. All oocytes matured with IL-7 treatment during IVM exhibited significantly higher cleavage and blastocyst formation rates after PA than the non-treatment group. Furthermore, significantly higher mRNA expression levels of developmental-related genes (PCNA, Filia, and NPM2) and antioxidant-related genes (GSR and PRDX1) were observed in the IL-7-supplemented oocytes than in the control group. IL-7-supplemented cumulus cells showed significantly higher mRNA expression of the anti-apoptotic gene BCL2L1 and mitochondria-related genes (TFAM and NOX4), and lower transcript levels of the apoptosis related-gene, Caspase3, than the control group. Collectively, the present study suggests that IL-7 supplementation during porcine IVM improves oocyte maturation and the developmental potential of porcine embryos after PA.
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Hirayama Y, Takishita R, Misawa H, Kikuchi K, Misumi K, Egawa S, Motoyama S, Hasuta Y, Nakamura Y, Hashiyada Y. Non-surgical transfer of vitrified porcine embryos using a catheter designed for a proximal site of the uterus. Anim Sci J 2020; 91:e13457. [PMID: 32959472 PMCID: PMC7757184 DOI: 10.1111/asj.13457] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/31/2020] [Accepted: 08/14/2020] [Indexed: 01/02/2023]
Abstract
This study aimed to compare the efficiency of non‐surgical embryo transfer (ET) using a newly developed catheter, which enables transferring embryos into a proximal site of the uterus (mostly uterine body), and surgical ET of vitrified porcine embryos. In Experiment 1, the catheter was inserted into 12 gilts, with each half of the group allocated to skilled or novice operators. The time required for insertion into the uterus did not differ between skilled and novice operators (4 min 9 s and 4 min 6 s, respectively). In Experiment 2, 12 gilts were used as recipients for non‐surgical and surgical ET with vitrified embryos (n = 6, each). There was no significant difference in the rate of piglet production based on the number of transferred embryos between surgical and non‐surgical ET (25.8% vs. 15.4%, p = .098). The results suggest that non‐surgical ET catheter allowed for easy insertion and transfer of embryos without special training. Although the catheter is effective for deposition of embryos into the proximal site of uterus, the efficiency of piglet production is not enhanced compared with surgical ET. The ET method using this catheter, being labor‐saving and less‐invasive, may contribute to the improvement of ET in pigs.
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Affiliation(s)
- Yuri Hirayama
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan
| | - Rie Takishita
- National Livestock Breeding Center Miyazaki Station, Miyazaki, Japan
| | - Hiroyasu Misawa
- First development Gr. Section, Misawa Medical Industry Co., Ltd, Ibaraki, Japan
| | - Kazuhiro Kikuchi
- Reproductive Biology Unit, Division of Animal Sciences, Institute of Agrobiological Sciences, NARO (National Agriculture and Food Research Organization), Ibaraki, Japan.,The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Koji Misumi
- National Livestock Breeding Center Miyazaki Station, Miyazaki, Japan.,Department of Animal Science and Resources, Nihon University College of Bioresource Sciences, Kanagawa, Japan
| | - Sachiko Egawa
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan
| | | | - Yasunobu Hasuta
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan
| | | | - Yutaka Hashiyada
- Department of Planning and Coordination, National Livestock Breeding Center, Fukushima, Japan.,Department of Bioproduction Science, Faculty of Bioresources, and Environmental Sciences, Ishikawa Prefectural University, Ishikawa, Japan
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Yoon JD, Hwang SU, Kim M, Jeon Y, Hyun SH. Growth differentiation factor 8 regulates SMAD2/3 signaling and improves oocyte quality during porcine oocyte maturation in vitro†. Biol Reprod 2020; 101:63-75. [PMID: 31004472 DOI: 10.1093/biolre/ioz066] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 08/07/2018] [Accepted: 04/17/2019] [Indexed: 11/12/2022] Open
Abstract
Growth differentiation factor 8 (GDF8), also known as myostatin, is a member of the transforming growth factor-β (TGF-β) family and has been identified as a strong physiological regulator of muscle differentiation. Recently, the functional role of GDF8 in reproductive organs has received increased interest following its detection in the human placenta and uterus. To investigate the effects of GDF8 during porcine oocyte in vitro maturation (IVM), we assessed the quality of matured oocytes. Furthermore, we investigated the specific gene transcription and protein activation levels in oocytes and cumulus cells after IVM and subsequent embryonic development after in vitro fertilization and parthenogenetic activation. Prior to these experiments, the concentration of GDF8 in porcine follicular fluid was determined. During the entire IVM period, 1.3 ng/mL GDF8 and its signaling inhibitor SB431542 (SB) at 5 μM were added as control, SB, SB + GDF8, and GDF8 groups, respectively. Our results demonstrate that supplementation with GDF8 during porcine oocyte IVM enhanced both meiotic and cytoplasmic maturation, with altered transcriptional patterns, via activation of Sma- and Mad-related protein 2/3 (SMAD2/3). Using the pharmacological inhibitor SB431542, we demonstrated that inhibition of GDF8-induced Smad2/3 signaling reduces matured oocyte quality. In conclusion, for the first time, we demonstrated paracrine factor GDF8 in porcine follicular fluid in vivo. Furthermore, we showed that GDF8 supplementation improved mature oocyte quality by regulating p38 mitogen-activated protein kinase phosphorylation and intracellular glutathione and reactive oxygen species levels during porcine IVM.
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Affiliation(s)
- Junchul David Yoon
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea.,Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Seon-Ung Hwang
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea.,Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Mirae Kim
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea.,Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Yubyeol Jeon
- Laboratory of Theriogenology and Reproductive Biotechnologies, College of Veterinary Medicine, Chonbuk National University, Iksan, Jeolabuk-do, Republic of Korea
| | - Sang-Hwan Hyun
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea.,Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
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Dang-Nguyen TQ, Wells D, Haraguchi S, Men NT, Nguyen HT, Noguchi J, Kaneko H, Kikuchi K. Combined refinements to somatic cell nuclear transfer methods improve porcine embryo development. J Reprod Dev 2020; 66:281-286. [PMID: 32173679 PMCID: PMC7297629 DOI: 10.1262/jrd.2019-156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The discovery of how to utilize CRISPR (clustered, regularly interspaced, short, palindromic repeats)-Cas (CRISPR-associated) systems for genome modification has accelerated
development of the field of genome editing, especially in large animals such as pigs. The low efficiency of somatic cell nuclear transfer (SCNT) is now becoming a major obstacle in
the production of genome-edited animals via cell-mediated approaches and improving efficacy of this technique is crucial. In this study, we propose a few simple modifications to a
zona-free SCNT protocol that are effective to produce numerous high-quality blastocysts. To refine the SCNT protocol we modified the following steps/factors: 1) culture medium for
SCNT embryos, 2) chemical treatment to prevent precocious activation of the manipulated/reconstructed oocytes and 3) donor cell serum starvation treatment. Although changes in each
of these steps only resulted in small improvements, the combination of all modifications altogether significantly enhanced developmental competence of SCNT embryos. Our modified
method yielded approximately three times greater blastocyst formation rates. Moreover, resulting blastocysts had roughly twice as many cells as compared to blastocysts produced by
the conventional SCNT method. With these significant in vitro improvements, our refined SCNT method is potentially suited for use in the production of genome
edited pigs.
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Affiliation(s)
- Thanh Quang Dang-Nguyen
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki 305-8602, Japan
| | - David Wells
- AgResearch Ltd., Ruakura Research Centre, Hamilton, New Zealand
| | - Seiki Haraguchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki 305-8602, Japan
| | - Nguyen Thi Men
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki 305-8602, Japan
| | - Hiep Thi Nguyen
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki 305-8602, Japan.,The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan.,Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Junko Noguchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki 305-8602, Japan
| | - Hiroyuki Kaneko
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki 305-8602, Japan
| | - Kazuhiro Kikuchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki 305-8602, Japan.,The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan
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In Vitro Culture of Late Stage Pig Embryos in a Chemically Defined Medium, Porcine Blastocyst Medium (PBM). Methods Mol Biol 2019. [PMID: 31230275 DOI: 10.1007/978-1-4939-9566-0_7] [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
In vitro production (IVP) of porcine preimplantation embryos is an important technique not only for basic and biomedical research purposes but also for animal biotechnology application such as transgenesis, cloning, and embryo transfer. In this chapter, we demonstrate a superior IVP procedure of porcine embryos derived from cumulus-oocyte complexes (COCs) of slaughtered pig ovaries which are cultured sequentially in different defined media. Porcine blastocyst medium (PBM) particularly designed for the late stage embryo culture could improve the potential of morulae or blastocysts to develop into hatching and hatched blastocysts with good quality.
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Sprícigo J, Leme L, Guimarães A, Oliveira Neto J, Silva P, Moreira N, Pivato I, Silva B, Ramos A, Dode M. Phospholipid composition and resistance to vitrification of in vivo blastocyst of a Brazilian naturalized porcine breed. ARQ BRAS MED VET ZOO 2019. [DOI: 10.1590/1678-4162-10249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
ABSTRACT Piau porcine blastocysts were submitted to MALDI-TOF to identify the main phospholipids (PL). After that, in vivo blastocysts (D6) were vitrified (n=52), non-vitrified were used as control (n=42). After warming, blastocysts were in vitro cultured to assess re-expansion and hatching at 24 and 48 hours. Finally, at 48 hours, hatched blastocysts were submitted to RT-qPCR searching for BCL2A1, BAK, BAX and CASP3 genes. For MALDI-TOF, the ion intensity was expressed in arbitrary units. Blastocyst development was compared by Qui-square (P< 0.05). Among the most representative PL was the phosphatidylcholine [PC (32:0) + H]+; [PC (34:1) + H]+ and [PC (36:4) + H]+. Beyond the PL, MALDI revealed some triglycerides (TG), including PPL (50:2) + Na+, PPO (50:1) + Na+, PLO (52:3) + Na+ and POO (52:2) + Na. Re-expansion did not differ (P> 0.05) between fresh or vitrified blastocysts at 24 (33.3%; 32.7%) or 48 hours (2.4%; 13.5%). Hatching rates were higher (P< 0.05) for fresh compared to vitrified at 24 (66.7%; 15.4%) and 48 hours (97.6%; 36.0%). BAX was overexpressed (P< 0.05) after vitrification. In conclusion, Piau blastocysts can be cryopreserved by Cryotop. This study also demonstrated that the apoptotic pathway may be responsible for the low efficiency of porcine embryo cryopreservation.
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Affiliation(s)
- J.F.W. Sprícigo
- Embrapa Recursos Genéticos e Biotecnologia, Brazil; University of Guelph, Canada
| | - L.O. Leme
- Embrapa Recursos Genéticos e Biotecnologia, Brazil
| | | | | | | | | | | | - B.D.M. Silva
- Embrapa Recursos Genéticos e Biotecnologia, Brazil
| | - A.F. Ramos
- Embrapa Recursos Genéticos e Biotecnologia, Brazil
| | - M.A.N. Dode
- Embrapa Recursos Genéticos e Biotecnologia, Brazil
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Yoon JD, Hwang SU, Kim M, Lee G, Jeon Y, Hyun SH. GDF8 enhances SOX2 expression and blastocyst total cell number in porcine IVF embryo development. Theriogenology 2019; 129:70-76. [PMID: 30825707 DOI: 10.1016/j.theriogenology.2019.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 01/21/2019] [Accepted: 02/03/2019] [Indexed: 01/14/2023]
Abstract
Growth differentiation factor 8 (GDF8) is a member of the transforming growth factor-β family and a physiological regulator. According to recent studies, GDF8 can be detected in follicular fluid and the uterus, suggesting that GDF8 may affect preimplantation embryonic development and act in a paracrine manner to improve the success of late-blastocyst implantation in vivo. We investigated the effect of GDF8 supplementation during in vitro culture (IVC) of porcine embryos derived from in vitro fertilization (IVF) and parthenogenetic activation (PA) on cleavage, blastocyst formation rate, and total cell number and analysed gene transcription levels and cell linage specification in the resulting blastocysts. First, the concentration of GDF8 in porcine oviductal fluid was determined to be 139.8 pg/mL. Then, 0, 0.2, 2, or 20 ng/mL GDF8 was added to embryos throughout the entire IVC period. Our results showed that supplementation with GDF8 during porcine preimplantation embryo IVC enhanced blastocyst formation and total cell number and altered the transcriptional patterns of genes that regulate pluripotency and cavitation. Furthermore, using differential immunostaining, we demonstrated that supplementation with GDF8 enhanced the expression of the genuine inner cell mass (ICM) marker SOX2 and the ICM/trophectoderm ratio, improving IVF blastocyst quality. In conclusion, for the first time, we demonstrated the presence of the in vivo oviductal factor GDF8 in oviductal fluid. Furthermore, we found that GDF8 supplementation at 0.2 ng/mL increased the blastocyst total cell number and ICM/trophectoderm ratio by inducing the transcription of genes involved in developmental competence and the expression of genuine ICM marker SOX2 during porcine IVF embryo development in vitro.
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Affiliation(s)
- Junchul David Yoon
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, 28644, Republic of Korea
| | - Seon-Ung Hwang
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, 28644, Republic of Korea
| | - Mirae Kim
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, 28644, Republic of Korea
| | - Gabsang Lee
- Institute for Cell Engineering, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Yubyeol Jeon
- Laboratory of Theriogenology and Reproductive Biotechnologies, College of Veterinary Medicine, Chonbuk National University, 79 Gobong-ro, Iksan, Jeolabuk-do, 54596, Republic of Korea.
| | - Sang-Hwan Hyun
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, 28644, Republic of Korea.
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Li S, Guo Q, Wang YM, Li ZY, Kang JD, Yin XJ, Zheng X. Glycine treatment enhances developmental potential of porcine oocytes and early embryos by inhibiting apoptosis. J Anim Sci 2018; 96:2427-2437. [PMID: 29762687 PMCID: PMC6095358 DOI: 10.1093/jas/sky154] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Glycine, a component of glutathione (GSH), plays an important role in protection from reactive oxygen species (ROS) and inhibition of apoptosis. The aim of this study was to determine the effect of glycine on in vitro maturation (IVM) of porcine oocytes and their developmental competence after parthenogenetic activation (PA). We examined nuclear maturation, ROS levels, apoptosis, mitochondrial membrane potential (ΔΨm), and ATP concentration, as well as the expression of several genes related to oocyte maturation and development. Our studies found that treatment with glycine in IVM culture medium increased nuclear maturation rate, but varying the concentrations of glycine (0.6, 6, or 12 mM) had no significant effect. Furthermore, 6 mM glycine supported greater blastocyst formation rates and lesser apoptosis after PA than the other concentrations (P < 0.05). All the glycine treatment groups had decreased levels of ROS in both matured oocytes and at the 2-cell stage (P < 0.05). At the 2-cell stage, the 6 mM glycine group had ROS levels that were lesser than the other 2 glycine treatment groups (0.6 and 12 mM). From this, we deemed 6 mM to be the optimal condition, and we then investigated the effects of 6 mM glycine on gene expression. The expression of both FGFR2 and Hsf1 were greater than the control group in mature oocytes. The glycine treatment group had greater levels of expression of an antiapoptotic gene (Bcl2) in mature oocytes and cumulus cells and lesser levels of expression of a proapoptotic gene (Bax) in PA blastocysts (P < 0.05). In addition, mitochondrial ΔΨm and ATP concentration were increased in 6 mM glycine group compared with the control group. In conclusion, our results suggest that glycine plays an important role in oocyte maturation and later development by reducing ROS levels and increasing mitochondrial function to reduce apoptosis.
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Affiliation(s)
- Suo Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Qing Guo
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Yanji, Jilin, China
| | - Yu-Meng Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Zi-Yue Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Jin-Dan Kang
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Yanji, Jilin, China
| | - Xi-Jun Yin
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Yanji, Jilin, China
| | - Xin Zheng
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
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10
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Yoon JD, Hwang SU, Kim E, Jin M, Kim S, Hyun SH. GDF8 activates p38 MAPK signaling during porcine oocyte maturation in vitro. Theriogenology 2017; 101:123-134. [PMID: 28708509 DOI: 10.1016/j.theriogenology.2017.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 05/30/2017] [Accepted: 06/04/2017] [Indexed: 02/07/2023]
Abstract
Growth Differentiation Factor 8 (GDF8) is a member of the transforming growth factor-β (TGF-β) family and has been identified as a strong physiological regulator. This factor is expressed as a paracrine factor in mural granulosa cells. To investigate the effects of GDF8 on the in vitro maturation (IVM) of porcine oocytes, we assessed the quality of matured oocytes as well as the specific gene transcription and protein activation levels in oocytes and cumulus cells (CCs) after IVM and subsequent embryonic development after in vitro fertilization (IVF) and parthenogenetic activation (PA). Supplemental concentrations (0, 1, 10, and 100 ng/ml) of GDF8 were provided in IVM medium. Supplementation with GDF8 during IVM induced transcription of specific TGF-β receptor genes, such as ActRIIb and Alk4/5, and the recognition of the GDF8 by these receptors induced phosphorylation of p38 MAPK. Activated p38 MAPK signaling changed oocyte maturation and cumulus expansion-related gene transcription: Nrf2 and Bcl-2 in oocytes and PCNA, Nrf2, Has2, Ptx3, and TNFAIP6 in CCs. The altered gene expression pattern during IVM resulted in a 10% lower level of intracellular ROS in mature oocytes. The improved cytoplasmic maturation led to an increase in the fertilization efficiency and subsequent embryonic developmental competence. The embryonic development showed increases in the blastocyst formation rate and higher transcription levels of POU5F1 and BCL-2 in the blastocysts. The present study suggests that supplementation of GDF8 during IVM synergistically improved the developmental potential of IVF- and PA-derived porcine embryos by reducing the intracellular ROS level in oocytes by altering the transcription of specific genes and increasing the phosphorylation of p38 MAPK during IVM. In conclusion, for the first time, our results demonstrate that GDF8 can act as a paracrine factor to modulate oocyte maturation by regulating p38 MAPK phosphorylation and intracellular ROS level during porcine IVM.
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Affiliation(s)
- Junchul David Yoon
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea
| | - Seon-Ung Hwang
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea
| | - Eunhye Kim
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea
| | - Minghui Jin
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea
| | - Soochong Kim
- Laboratory of Veterinary Pathology and Platelets Signaling, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea
| | - Sang-Hwan Hyun
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea; Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea.
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11
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Direct and Osmolarity-Dependent Effects of Glycine on Preimplantation Bovine Embryos. PLoS One 2016; 11:e0159581. [PMID: 27459477 PMCID: PMC4961386 DOI: 10.1371/journal.pone.0159581] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 07/04/2016] [Indexed: 12/13/2022] Open
Abstract
Concentrations of glycine (Gly) in embryo culture media are often lower (~0.1 mM) than those in oviductal or uterine fluids (≥1.2 mM). The objective of this study was to determine direct and osmolarity-dependent effects of physiological concentrations of Gly on blastocyst formation and hatching, cell allocation to the trophectoderm (TE) and inner cell mass (ICM), and metabolic activity of bovine embryos. In experiment 1, zygotes were cultured with 100 or 120 mM NaCl and 0 or 1 mM Gly for the first 72 h of culture. Blastocyst formation and hatching were improved (P<0.05) when embryos were cultured with 100 compared to 120 mM NaCl. Inclusion of 1 mM Gly improved (P<0.05) blastocyst formation compared to 0 mM Gly, but this effect was only significant (P<0.05) for embryos cultured with 120 mM NaCl, suggesting bovine embryos can utilize Gly as an osmolyte. In experiment 2, embryos were cultured with 0.1, 1.1, 2.1, or 4.1 mM Gly (100 mM NaCl) for the final 96 h of culture. Blastocyst development was not affected (P>0.05) by Gly, but hatching (0.1 mM Gly, 18.2%) was improved (P<0.05) when embryos were cultured with 1.1 (31.4%) or 2.1 (29.4%) mM Gly. Blastocyst, TE, and ICM cell numbers were not affected (P>0.05) by Gly in either experiment. Blastocysts produced alanine, glutamine, pyruvate, and urea and consumed aspartate, but this metabolic profile was not affected (P>0.05) by Gly. In conclusion, Gly (1.0 mM) improves the development of both early and late stage embryos, but beneficial effects are more pronounced for early embryos exposed to elevated osmolarity.
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12
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Redel BK, Spate LD, Lee K, Mao J, Whitworth KM, Prather RS. Glycine supplementation in vitro enhances porcine preimplantation embryo cell number and decreases apoptosis but does not lead to live births. Mol Reprod Dev 2016; 83:246-58. [PMID: 26824641 PMCID: PMC5067679 DOI: 10.1002/mrd.22618] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 01/17/2016] [Indexed: 01/09/2023]
Abstract
Most in vitro culture conditions are less‐than‐optimal for embryo development. Here, we used a transcriptional‐profiling database to identify culture‐induced differences in gene expression in porcine blastocysts compared to in vivo‐produced counterparts. Genes involved in glycine transport (SLC6A9), glycine metabolism (GLDC, GCSH, DLD, and AMT), and serine metabolism (PSAT1, PSPH, and PHGDH) were differentially expressed. Addition of 10 mM glycine to the culture medium (currently containing 0.1 mM) reduced the abundance of SLC6A9 transcript and increased total cell number, primarily in the trophectoderm lineage (P = 0.003); this was likely by decreasing the percentage of apoptotic nuclei. As serine and glycine can be reversibly metabolized by serine hydroxymethyltransferase 2 (SHMT2), we assessed the abundance of SHMT2 transcript as well as its functional role by inhibiting it with aminomethylphosphonic acid (AMPA), a glycine analog, during in vitro culture. Both AMPA supplementation and elevated glycine decreased the mRNA abundance of SHMT2 and tumor protein p53 (TP53), which is activated in response to cellular stress, compared to controls (P ≤ 0.02). On the other hand, mitochondrial activity of blastocysts, mtDNA copy number, and abundance of mitochondria‐related transcripts did not differ between control and 10 mM glycine culture conditions. Despite improvements to these metrics of blastocyst quality, transfer of embryos cultured in 10 mM glycine did not result in pregnancy whereas the transfer of in vitro‐produced embryos cultured in control medium yielded live births. Mol. Reprod. Dev. 83: 246–258, 2016. © 2016 The Authors.
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Affiliation(s)
- Bethany K Redel
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Lee D Spate
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Kiho Lee
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Jiude Mao
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Kristin M Whitworth
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Randall S Prather
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
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13
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Sakagami N, Nishida K, Misumi K, Hirayama Y, Yamashita S, Hoshi H, Misawa H, Akiyama K, Suzuki C, Yoshioka K. The relationship between oxygen consumption rate and viability of in vivo-derived pig embryos vitrified by the micro volume air cooling method. Anim Reprod Sci 2016; 164:40-6. [DOI: 10.1016/j.anireprosci.2015.11.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 11/26/2022]
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14
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Suzuki C, Sakaguchi Y, Hoshi H, Yoshioka K. Lipid-rich bovine serum albumin improves the viability and hatching ability of porcine blastocysts produced in vitro. J Reprod Dev 2015; 62:79-86. [PMID: 26582048 PMCID: PMC4768781 DOI: 10.1262/jrd.2015-076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The effects of lipid-rich bovine serum albumin (LR-BSA) on the development of porcine blastocysts produced in vitro were examined. Addition of 0.5 to 5 mg/ml LR-BSA to porcine blastocyst medium (PBM) from Day 5 (Day 0 = in vitro fertilization) significantly increased the hatching rates of blastocysts on Day 7 and the total cell numbers in Day-7 blastocysts. When Day-5 blastocysts were cultured with PBM alone, PBM containing LR-BSA, recombinant human serum albumin or fatty acid-free BSA, addition of LR-BSA significantly enhanced hatching rates and the cell number in blastocysts that survived compared with other treatments. The diameter, ATP content and numbers of both inner cell mass and total cells in Day-6 and Day-7 blastocysts cultured with PBM containing LR-BSA were significantly higher than in blastocysts cultured with PBM alone, whereas LR-BSA had no effect on mitochondrial membrane potential. The mRNA levels of enzymes involved in fatty acid metabolism and β-oxidation (ACSL1, ACSL3, CPT1, CPT2 and KAT) in Day-7 blastocysts were significantly upregulated by the addition of LR-BSA. The results indicated that LR-BSA enhanced hatching ability and quality of porcine blastocysts produced in vitro, as determined by ATP content, blastocyst diameter and expression levels of the specific genes, suggesting that the stimulatory effects of LR-BSA arise from lipids bound to albumin.
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Affiliation(s)
- Chie Suzuki
- Pathology and Physiopathology Research Division, National Institute of Animal Health, Ibaraki 305-0856, Japan
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15
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Mito T, Yoshioka K, Noguchi M, Yamashita S, Misumi K, Hoshi T, Hoshi H. Birth of piglets from in vitro–produced porcine blastocysts vitrified and warmed in a chemically defined medium. Theriogenology 2015; 84:1314-20. [DOI: 10.1016/j.theriogenology.2015.06.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 06/13/2015] [Accepted: 06/13/2015] [Indexed: 10/23/2022]
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16
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Sakagami N, Nishida K, Misumi K, Hirayama Y, Hoshi T, Hoshi H, Fujiya A, Nakano S, Akiyama K, Suzuki C, Yoshioka K. Transportation of Preimplantation Porcine Embryos without Cryopreservation Using a Novel Embryo Carrier. ACTA ACUST UNITED AC 2015. [DOI: 10.1274/jmor.32.121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Shibutani M, Mori T, Miyano T, Miyake M. Removal of O-GlcNAcylation is important for pig preimplantation development. J Reprod Dev 2015; 61:341-50. [PMID: 26004176 PMCID: PMC4547992 DOI: 10.1262/jrd.2014-173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Glucose has been recognized as an energy source for a long time, but it has recently been suggested that the hexosamine biosynthesis pathway (HBP) and downstream protein O-GlcNAcylation have important functions in mouse preimplantation development. Thus, whether or not O-GlcNAcylation was present and what functions O-GlcNAcylation has in pig preimplantation development were investigated in the present study. The expressions of mRNA of glutaminefructose-6-phosphate aminotransferase (Gfpt), O-GlcNAc transferase (Ogt) and O-GlcNAcase (Oga), which are involved in the HBP and O-GlcNAc cycling, were examined in pig parthenogenetic diploids at each preimplantation developmental stage. Gfpt and Ogt were detected in diploids at all stages. Though Oga was detected at all stages except the 4-cell stage, OGA proteins were detected in diploids from the 2-cell to
blastocyst stage. Furthermore, O-GlcNAcylated proteins in MII oocytes and diploids were also detected by immunofluorescence at every stage. Inhibition of OGT by 4.0 mM BADGP did not affect development up to the blastocyst stage, while inhibition of OGA by 300 µM PUGNAc decreased the proportion of diploids beyond the 4-cell stage. Four-cell diploids cultured with PUGNAc until 48 h developed to the blastocyst stage after culture in a PUGNAc-free medium until 144 h after electrostimulation. RNA polymerase II (Pol II) phosphorylation, which indicates the onset of mRNA transcription, was detected in nuclei of diploids in the control group at 48 h but not in the PUGNAc-treated group. These results indicate that HBP and O-GlcNAcylation have important functions in pig preimplantation development and that inhibition of OGA is fatal for development. It is also suggested that OGA inhibition disrupts normal Pol II regulation and may cause a zygotic gene activation error.
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Affiliation(s)
- Mihiro Shibutani
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
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18
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Sakurai M, Suzuki C, Yoshioka K. Effect of knockout serum replacement supplementation to culture medium on porcine blastocyst development and piglet production. Theriogenology 2015; 83:679-686.e1. [DOI: 10.1016/j.theriogenology.2014.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 09/17/2014] [Accepted: 11/01/2014] [Indexed: 10/24/2022]
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19
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Shibutani M, Lee J, Miyano T, Miyake M. Demands for carbohydrates as major energy substrates depend on the preimplantation developmental stage in pig embryos: differential use of fructose by parthenogenetic diploids before and after the 4-cell stage in the pig. J Reprod Dev 2015; 61:106-15. [PMID: 25736264 PMCID: PMC4410308 DOI: 10.1262/jrd.2014-093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The embryo culture technique has been improving, but the detailed demands for energy substrates such as glucose, fructose, pyruvate and lactate of preimplantation embryos are still unclear. In the present study, the demands of pig preimplantation embryos at each different developmental stage were investigated by use of parthenogenetic diploids as a model of pig preimplantation embryos. Pig parthenogenetic diploids showed different use of glucose and fructose before and after the 4-cell stage. Although glucose supported the development of pig embryos throughout the preimplantation stages and even maintained the expansion and hatching of blastocysts, it suppressed development to the blastocyst stage when glucose coexisted with pyruvate and lactate from 4 h after activation, but not after 48 h (early 4-cell stage). Since ketohexokinase that metabolizes fructose was not expressed in 2-cell and 4-cell diploids, a medium that included only fructose as a major
energy substrate did not support early cleavage of pig diploids beyond the 4-cell stage, and almost no diploids developed to the morula stage just as in a medium without carbohydrates. These results may explain the different suppressive effects on pig preimplantation development between glucose and fructose when pyruvate and lactate were present in a medium. In addition, 4-cell diploids that had been cultured in a medium with pyruvate and lactate developed to the expanded blastocyst stage without any carbohydrates as a major energy substrate. These results show that the demands for carbohydrates are different depending on the developmental stage in pig preimplantation embryos.
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Affiliation(s)
- Mihiro Shibutani
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
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20
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Lee E, Min SH, Song BS, Yeon JY, Kim JW, Bae JH, Park SY, Lee YH, Kim SU, Lee DS, Chang KT, Koo DB. Exogenous γ-tocotrienol promotes preimplantation development and improves the quality of porcine embryos. Reprod Fertil Dev 2015; 27:481-90. [DOI: 10.1071/rd13167] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 12/11/2013] [Indexed: 01/07/2023] Open
Abstract
γ-tocotrienol (GTT), an isomer of vitamin E, has been the subject of increasing interest due to its strong anti-oxidant effects. Therefore, in this study, the effects of GTT on blastocyst development, expression levels of reactive oxygen species (ROS) and apoptotic index were investigated in preimplantation porcine embryos. After in vitro maturation and fertilisation, porcine embryos were cultured for 6 days in porcine zygote medium 3 supplemented with or without GTT (200 μM) under oxidative stress conditions (200 μM hydrogen peroxide (H2O2)). Blastocyst development was significantly improved in the GTT-treated group when compared with the H2O2-treated group (P < 0.05). Subsequent evaluation of the intracellular levels of ROS and numbers of apoptotic nuclei in GTT-treated blastocysts revealed that ROS levels of GTT-treated porcine blastocysts were decreased (P < 0.05) and the numbers of apoptotic nuclei were reduced by GTT treatment in porcine embryos. Moreover, the total cell numbers of blastocysts were significantly increased in the GTT-treated group relative to the untreated group under H2O2-induced oxidative stress (P < 0.05). The expression levels of apoptosis-related genes (BCL-XL, BAX) in GTT-treated blastocysts were then investigated using real-time reverse transcription polymerase chain reaction. Expression of the anti-apoptotic BCL-XL gene was shown to be increased in the GTT-treated blastocyst group, whereas expression of the pro-apoptotic BAX gene was decreased. Taken together, these results suggest that GTT (200 μM) under H2O2-induced oxidative stress, thereby improving the developmental competence of porcine embryos via modulation of intracellular levels of ROS and the apoptotic index during the preimplantation stage.
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21
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Sakagami N, Nishida K, Akiyama K, Abe H, Hoshi H, Suzuki C, Yoshioka K. Relationships between oxygen consumption rate, viability, and subsequent development of in vivo–derived porcine embryos. Theriogenology 2015; 83:14-20. [DOI: 10.1016/j.theriogenology.2014.06.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 06/09/2014] [Accepted: 06/09/2014] [Indexed: 10/24/2022]
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22
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Effect of Three Dimensional Culture of Porcine Endometrial Cells on Their Plasminogen Activity and Pre-implantation Embryo Development after Co-culture. JOURNAL OF ANIMAL REPRODUCTION AND BIOTECHNOLOGY 2014. [DOI: 10.12750/jet.2014.29.2.207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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23
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Mullen MP, Bazer FW, Wu G, Parr MH, Evans ACO, Crowe MA, Diskin MG. Effects of systemic progesterone during the early luteal phase on the availabilities of amino acids and glucose in the bovine uterine lumen. Reprod Fertil Dev 2014; 26:282-92. [PMID: 23374643 DOI: 10.1071/rd12319] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 12/18/2012] [Indexed: 12/26/2022] Open
Abstract
The uterine histotroph provides essential nutrition to the developing conceptus during the preimplantation period of pregnancy. The objective of the present study was to examine the effects of cycle stage and progesterone (P4) concentrations in the blood on the recoverable quantities of amino acids and glucose in the histotroph during the preimplantaion period of conceptus development. Following oestrus, dairy heifers were assigned to low, control or high P4 groups (n=6 heifers per treatment and time point). The uterine horn ipsilateral to the corpus luteum was flushed on either Day 7 or Day 13. The present study quantified 24 amino acids and glucose in the uterine flushings using HPLC and fluorometry, respectively. Heifers in the low P4 group had lower plasma concentrations of P4 throughout the cycle, whereas heifers in the high group had higher plasma concentrations of P4 between Days 3 and 7 compared with the control group (P<0.05). Total recoverable neutral (Ser, Gln, Gly, Thr, Cit, β-Ala, Tau, Ala, Tyr, Trp, Met, Val, Phe, Ile, Leu, Pro and Cys), acidic (Glu) and basic (His, Arg, Orn and Lys) amino acids were greater (P<0.05) on Day 13 than on Day 7. There was no significant difference in the amount of Asp or Asn between Day 7 and Day 13. The amount of amino acids recovered on Day 7 was similar across treatment groups. On Day 13, the amount of Asn, His and Thr was lower (P<0.05) in the low P4 heifers compared with the controls and/or high P4 heifers. Quantities of glucose were not altered by cycle stage or P4 treatment. In conclusion, the stage of oestrous cycle and P4 play important roles in modulating amino acids in the histotroph, a potentially critical factor for early embryonic and/or conceptus survival.
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Affiliation(s)
- Michael P Mullen
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Mellows Campus, Athenry, Co. Galway, Ireland
| | - Fuller W Bazer
- Department of Animal Science, Texas A&M University, College Station, TX 77843-2471, USA
| | - Guoyao Wu
- Department of Animal Science, Texas A&M University, College Station, TX 77843-2471, USA
| | - Mervyn H Parr
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Mellows Campus, Athenry, Co. Galway, Ireland
| | - Alexander C O Evans
- UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Mark A Crowe
- UCD School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - Michael G Diskin
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Mellows Campus, Athenry, Co. Galway, Ireland
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24
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Grupen CG. The evolution of porcine embryo in vitro production. Theriogenology 2014; 81:24-37. [PMID: 24274407 DOI: 10.1016/j.theriogenology.2013.09.022] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/14/2013] [Accepted: 09/14/2013] [Indexed: 12/23/2022]
Abstract
The in vitro production of porcine embryos has presented numerous challenges to researchers over the past four decades. Some of the problems encountered were specific to porcine gametes and embryos and needed the concerted efforts of many to overcome. Gradually, porcine embryo in vitro production systems became more reliable and acceptable rates of blastocyst formation were achieved. Despite the significant improvements, the problem of polyspermic fertilization has still not been adequately resolved and the embryo in vitro culture conditions are still considered to be suboptimal. Whereas early studies focused on increasing our understanding of the reproductive processes involved, the technology evolved to the point where in vitro-matured oocytes and in vitro-produced embryos could be used as research material for developing associated reproductive technologies, such as SCNT and embryo cryopreservation. Today, the in vitro procedures used to mature oocytes and culture embryos are integral to the production of transgenic pigs by SCNT. This review discusses the major achievements, advances, and knowledge gained from porcine embryo in vitro production studies and highlights the future research perspectives of this important technology.
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Affiliation(s)
- Christopher G Grupen
- Faculty of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia.
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Somfai T, Yoshioka K, Tanihara F, Kaneko H, Noguchi J, Kashiwazaki N, Nagai T, Kikuchi K. Generation of live piglets from cryopreserved oocytes for the first time using a defined system for in vitro embryo production. PLoS One 2014; 9:e97731. [PMID: 24844283 PMCID: PMC4028240 DOI: 10.1371/journal.pone.0097731] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 04/04/2014] [Indexed: 11/25/2022] Open
Abstract
We report the successful piglet production from cryopreserved oocytes for the first time by using a simple, high capacity vitrification protocol for preservation and a defined system for in vitro embryo production. Immature cumulus-oocyte complexes (COCs) from prepubertal gilts were vitrified in microdrops and stored in liquid nitrogen. After warming, COCs were subjected to in vitro maturation (IVM), fertilization (IVF), and subsequent culture (IVC). Adjusting warmplate temperature to 42°C during warming prevented temperature drops in a medium below 34.0°C and significantly increased the percentage of oocyte survival and thus blastocyst yields obtained from total vitrified oocytes compared with that of warming at 38°C (87.1% vs 66.9% and 4.4% vs 2.7%, respectively). Nuclear maturation and fertilization of oocytes were not affected by vitrification and warming temperature. Blastocyst development on day 7 (day 0 = IVF) of the surviving oocytes after warming at 38°C and 42°C was not different but lower (P<0.05) than those of non-vitrified control oocytes (4.6%, 5.2% and 17.9%, respectively). However, blastocyst cell numbers in the control and vitrified groups were similar irrespective of warming temperature. Omitting porcine follicular fluid (pFF) from IVM medium (POM) did not affect maturation, fertilization and embryo development of vitrified-warmed oocytes. Transfer of blastocysts obtained on day 5 from vitrified oocytes matured either with or without pFF into 4 recipients (2 for each group) resulted in 4 pregnancies and the delivery of a total of 18 piglets. In conclusion, optimization of warming temperature was a key factor for achieving high survival rates, and surviving oocytes could be utilized in vitro using defined media. Using these modifications, live piglets could be obtained from cryopreserved oocytes for the first time.
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Affiliation(s)
- Tamás Somfai
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Ibaraki, Japan
- * E-mail:
| | - Koji Yoshioka
- Pathology and Pathophysiology Research Division, National Institute of Animal Health, Tsukuba, Ibaraki, Japan
| | - Fuminori Tanihara
- Animal Development and Differentiation Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
- The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
| | - Hiroyuki Kaneko
- Animal Development and Differentiation Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
| | - Junko Noguchi
- Animal Development and Differentiation Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
| | - Naomi Kashiwazaki
- Graduate School of Veterinary Sciences, Azabu University, Sagamihara, Kanagawa, Japan
| | - Takashi Nagai
- Food and Fertilizer Technology Center, Taipei, Taiwan
| | - Kazuhiro Kikuchi
- Animal Development and Differentiation Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
- The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
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26
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Krisher RL, Prather RS. A role for the Warburg effect in preimplantation embryo development: metabolic modification to support rapid cell proliferation. Mol Reprod Dev 2012; 79:311-20. [PMID: 22431437 DOI: 10.1002/mrd.22037] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this essay, we propose that embryos express a metabolic phenotype necessarily different from that of differentiated somatic cells and more like that of rapidly proliferating cancer cells. This metabolic adaptation, known as the Warburg effect, supports rapid cell proliferation. One of the hallmarks of the Warburg effect is that pyruvate is directed away from the tri-carboxylic acid cycle and metabolized to lactate, resulting in a buildup of glycolytic intermediates. Although this is a comparatively inefficient way to generate ATP, this adaptation allows the cell to meet other critical metabolic requirements, including biomass production and redox regulation. Thus, utilization of WE gives proliferating cells a selective growth advantage. This model represents a completely new understanding of embryo metabolism in the context of a broad, interconnected network of metabolic mechanisms that influence viability, versus the current dogma of carbohydrate metabolism via oxidative phosphorylation. A more complete understanding of embryo metabolism is critical to better support embryo viability in vitro, and to avoid forcing embryos to adapt to suboptimal culture conditions at a significant cost to future growth and development.
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Affiliation(s)
- Rebecca L Krisher
- National Foundation for Fertility Research, Lone Tree, Colorado 80124, USA.
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