1
|
Kim S, Oh D, Choi H, Kim M, Cai L, Jawad A, Haomiao Z, Lee J, Kim E, Hyun SH. The effect of C–C motif chemokine ligand 2 supplementation on in vitro maturation of porcine cumulus-oocyte complexes and subsequent developmental competence after parthenogenetic activation. Front Vet Sci 2023; 10:1136705. [PMID: 36992978 PMCID: PMC10040565 DOI: 10.3389/fvets.2023.1136705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 02/22/2023] [Indexed: 03/16/2023] Open
Abstract
Porcine embryos are used for a variety of applications. However, the maturation rate in vitro remains low, and novel in vitro maturation (IVM) techniques that facilitate the collection of mature oocytes are necessary. C-C motif chemokine ligand 2 (CCL2) is a key periovulatory chemokine present in cumulus-oocyte complexes (COCs). We aimed to examine the effects of CCL2 supplementation during IVM on oocyte maturation and embryonic development. The CCL2 concentration was significantly higher in porcine follicular fluid (pFF) derived from follicles >8 mm in size than in pFF derived from smaller follicles. There was a significant increase in CCL2 mRNA levels in all follicular cells after IVM compared with that before IVM. We analyzed the localization of CCL2 and its receptor, the CCL2 receptor, in follicular cells. During IVM, different concentrations of CCL2 were added to COCs cultured in a maturation medium. After IVM, the group treated with 100 ng/mL CCL2 showed significantly higher metaphase II rates than the control group. All CCL2-treatment groups showed a significant increase in intracellular glutathione levels and a significant decrease in reactive oxygen species levels, compared to the control. In CCs treated with 100 ng/mL CCL2, the mRNA levels of BAX, CASP3, and NPR2 were significantly decreased. Furthermore, the mRNA levels of SOD1, SOD2, and CD44 were significantly increased. In oocytes treated with 10 ng/mL CCL2, mRNA levels of BAX and CASP3 were significantly decreased, whereas, NRF2 and NPM2 were significantly increased. ERK1 exhibited significantly increased mRNA expression in both CCs and oocytes treated with 10 ng/mL CCL2. The protein expression ratio of phosphorylated ERK1/2 to total ERK1/2 was significantly increased in CCs treated with 10 ng/mL CCL2. After parthenogenetic activation, cleavage rates were significantly improved in the 100 ng/mL CCL2 treatment group, and blastocyst formation rates were significantly enhanced in the 10 ng/mL CCL2 treatment group. Overall, our results suggest that IVM medium along with CCL2 improves porcine oocyte maturation and the development of parthenogenetically-activated embryos.
Collapse
Affiliation(s)
- Sohee 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 and Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Dongjin Oh
- 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 and Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Hyerin Choi
- 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 and 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 and Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Lian Cai
- 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 and Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
- Graduate School of Veterinary Biosecurity and Protection, Chungbuk National University, Cheongju, Republic of Korea
| | - Ali Jawad
- 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 and Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Zheng Haomiao
- 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 and Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Joohyeong Lee
- 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 and Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Eunhye Kim
- Laboratory of Molecular Diagnostics and Cell Biology, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
- *Correspondence: Eunhye Kim
| | - 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 and Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
- Graduate School of Veterinary Biosecurity and Protection, Chungbuk National University, Cheongju, Republic of Korea
- Sang-Hwan Hyun
| |
Collapse
|
2
|
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.
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
Abizadeh M, Novin MG, Amidi F, Ziaei SA, Abdollahifar MA, Nazarian H. Potential of Auraptene in Improvement of Oocyte Maturation, Fertilization Rate, and Inflammation in Polycystic Ovary Syndrome Mouse Model. Reprod Sci 2020; 27:1742-1751. [PMID: 32124396 DOI: 10.1007/s43032-020-00168-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/13/2020] [Indexed: 11/24/2022]
Abstract
Polycystic ovary with poor-quality oocytes has remained problematic in polycystic ovary syndrome (PCOS) patients. It is well documented that the inflammation and production of reactive oxygen species (ROS) in PCOS ovaries are significantly higher than normal voluntaries. In this study, we hypothesized that auraptene (AUR), as a coumarin derivative with anti-inflammatory properties, may be effective in improvement of oocyte maturation and fertilization rate in PCOS patients. For this purpose, PCOS model was induced in NMRI mice and confirmed by ovarian histopathology observations and hormonal assays. PCOS-induced mice were administrated with AUR (PCOS-AUR) and metformin (PCOS-MET), and their effects on inflammation, apoptosis rate, oocyte maturation, and in vitro fertilization capacity were determined and compared with those normal and PCOS animals treated with sesame oil (PCOS-sesame oil) and no treatment (PCOS). Treatment with AUR and MET decreased the inflammation and apoptosis rates in PCOS mice compared with PCOS animals with no treatment. PCOS-AUR and PCOS-MET oocytes also showed higher intracellular glutathione and lower ROS concentrations compared with PCOS mice, indicating improved oocyte maturation rate. PCOS-AUR and PCOS-MET groups showed higher percentages of expansion rate and MII stage oocytes, and lower rate of abnormal oocytes compared with PCOS with no treatment. The rate of fertilization in the oocytes isolated from PCOS-AUR and PCOS-MET groups was higher than PCOS-sesame oil and PCOS groups. Our findings suggest that AUR can be considered as a potential candidate for improvement of oocyte maturation and fertilization capacity in PCOS patients, comparable to MET.
Collapse
Affiliation(s)
- Marzieh Abizadeh
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Marefat Ghaffari Novin
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fardin Amidi
- Department of Biology and Anatomical Sciences, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Ali Ziaei
- Department of Pharmaceutical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Nazarian
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Men's Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
5
|
Park KM, Wang JW, Yoo YM, Choi MJ, Hwang KC, Jeung EB, Jeong YW, Hwang WS. Sphingosine-1-phosphate (S1P) analog phytosphingosine-1-phosphate (P1P) improves the in vitro maturation efficiency of porcine oocytes via regulation of oxidative stress and apoptosis. Mol Reprod Dev 2019; 86:1705-1719. [PMID: 31490595 DOI: 10.1002/mrd.23264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 08/03/2019] [Indexed: 12/11/2022]
Abstract
Phytosphingosine-1-phosphate (P1P) is a signaling sphingolipid that regulates various physiological activities. However, little is known about the effect of P1P in the context of reproduction. Thus, we aimed to investigate the influence of P1P on oocyte maturation during porcine in vitro maturation (IVM). Here, we report the expression of S1PR1-3 among P1P receptors (S1PR1-4) in cumulus cells and oocytes. When P1P was administered at concentrations of 10, 50, 100, and 1,000 nM during IVM, the metaphase II rate was significantly increased in the 1,000 nM (1 μM) P1P treatment group. Maturation rate improvement by P1P supplementation was observed only in the presence of epidermal growth factor (EGF). Oocytes under the influence of P1P showed decreased intracellular reactive oxygen species levels but no significant differences in glutathione levels. In our molecular studies, P1P treatment upregulated gene expression involved in cumulus expansion (Has2 and EGF), antioxidant enzymes (SOD3 and Cat), and developmental competence (Oct4) while activating extracellular signal-regulated kinase1/2 and Akt signaling. P1P treatment also influenced oocyte survival by shifting the ratio of Bcl-2 to Bax while inactivating JNK signaling. We further demonstrated that oocytes matured with P1P displayed significantly higher developmental competence (cleavage and blastocyst [BL] formation rate) and greater BL quality (total cell number and the ratio of apoptotic cells) when activated via parthenogenetic activation (PA) and in vitro fertilization. Despite the low levels of endogenous P1P found in animals, exogenous P1P influenced animal reproduction, as shown by increased porcine oocyte maturation as well as preimplantation embryo development. This study and its findings are potentially relevant for both human and animal-assisted reproduction.
Collapse
Affiliation(s)
- Kyu-Mi Park
- Sooam Biotech Research Foundation, Guro-gu, Seoul, Republic of Korea
| | - Jae Woong Wang
- Sooam Biotech Research Foundation, Guro-gu, Seoul, Republic of Korea
| | - Yeong-Min Yoo
- Laboratory of Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | | | - Kyu Chan Hwang
- Sooam Biotech Research Foundation, Guro-gu, Seoul, Republic of Korea
| | - Eui-Bae Jeung
- Laboratory of Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Yeon Woo Jeong
- Sooam Biotech Research Foundation, Guro-gu, Seoul, Republic of Korea
| | - Woo Suk Hwang
- Sooam Biotech Research Foundation, Guro-gu, Seoul, Republic of Korea
| |
Collapse
|
6
|
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.
Collapse
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.
| |
Collapse
|
7
|
Xiong X, Lan D, Li J, Lin Y, Zi X. Effects of Zinc Supplementation During In Vitro Maturation on Meiotic Maturation of Oocytes and Developmental Capacity in Yak. Biol Trace Elem Res 2018; 185:89-97. [PMID: 29247445 DOI: 10.1007/s12011-017-1217-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 12/04/2017] [Indexed: 12/26/2022]
Abstract
Zinc (Zn) is an essential trace element that is required during mammalian developmental processes. The objective of this study was to investigate the effects of Zn supplementation during in vitro maturation (IVM) on the developmental capacity of yak (Bos grunniens) oocytes. Cumulus expansion, nuclear maturation, intracellular glutathione (GSH), reactive oxygen species (ROS) levels, superoxide dismutase (SOD) activity, subsequent embryonic development, and the expression of Zn transporters (ZnTs) and Zrt and Irt-like proteins (ZiPs) were evaluated. The Zn concentrations in yak plasma and follicular fluid were 0.740 ± 0.012 and 0.382 ± 0.009 μg/mL, respectively. The cumulus expansion did not show significant differences in COCs after matured with or without Zn supplementation (P > 0.05). The intracellular GSH was higher in oocytes matured with 1 or 2 mg/L Zn than in control group (0 mg/L) (P < 0.05). However, ROS levels of oocytes matured with 1 or 2 mg/L Zn were reduced significantly compared with the control and 0.5 mg/L groups (P < 0.05). The SOD activity was increased significantly after Zn supplementation. The cleavage rate was not significantly different after Zn supplementation (P > 0.05). Percentages of matured oocytes that developed into the blastocyst stage after IVF were 47.9, 50.5, 60.4, and 58.9% for 0, 0.5, 1, and 2 mg/L Zn groups, respectively. Gene expression analysis revealed that the expression patterns associated with Zn were changed after Zn supplementation. In conclusion, Zn supplementation to IVM improved yak oocyte maturation and subsequent development by increasing GSH and SOD activity, decreasing ROS in oocytes.
Collapse
Affiliation(s)
- Xianrong Xiong
- College of Life Science and Technology, Southwest Minzu University, Chengdu, Sichuan, 610041, China
| | - Daoliang Lan
- College of Life Science and Technology, Southwest Minzu University, Chengdu, Sichuan, 610041, China
| | - Jian Li
- College of Life Science and Technology, Southwest Minzu University, Chengdu, Sichuan, 610041, China.
| | - Yaqiu Lin
- College of Life Science and Technology, Southwest Minzu University, Chengdu, Sichuan, 610041, China
| | - Xiangdong Zi
- College of Life Science and Technology, Southwest Minzu University, Chengdu, Sichuan, 610041, China
| |
Collapse
|
8
|
Treatment of allicin improves maturation of immature oocytes and subsequent developmental ability of preimplantation embryos. ZYGOTE 2017; 25:480-488. [DOI: 10.1017/s0967199417000302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
SummaryAllicin (AL) regulates the cellular redox, proliferation, viability, and cell cycle of different cells against extracellular-derived stress. This study investigated the effects of allicin treatment on porcine oocyte maturation and developmental competence. Porcine oocytes were cultured in medium supplemented with 0 (control), 0.01, 0.1, 1, 10 or 100 μM AL, respectively, during in vitro maturation (IVM). The rate of polar body emission was higher in the 0.1 AL-treated group (74.5% ± 2.3%) than in the control (68.0% ± 2.6%) (P < 0.1). After parthenogenetic activation, the rates of cleavage and blastocyst formation were significantly higher in the 0.1 AL-treated group than in the control (P < 0.05). The reactive oxygen species level at metaphase II did not significantly differ among all groups. In matured oocytes, the expression of both BAK and CASP3, and BIRC5 was significantly lower and higher, respectively, in the 0.1 AL-treated group than in the control. Similarly, the expression of BMP15 and CCNB1, and the activity of phospho-p44/42 mitogen-activated protein kinase (MAPK), significantly increased. These results indicate that supplementation of oocyte maturation medium with allicin during IVM improves the maturation of oocytes and the subsequent developmental competence of porcine oocytes.
Collapse
|
9
|
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.
Collapse
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.
| |
Collapse
|
10
|
Nakai M, Ito J, Suzuki SI, Fuchimoto DI, Sembon S, Suzuki M, Noguchi J, Kaneko H, Onishi A, Kashiwazaki N, Kikuchi K. Lack of calcium oscillation causes failure of oocyte activation after intracytoplasmic sperm injection in pigs. J Reprod Dev 2016; 62:615-621. [PMID: 27725347 PMCID: PMC5177980 DOI: 10.1262/jrd.2016-113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In pigs, the efficiency of embryo production after intracytoplasmic sperm injection (ICSI) is still low because of frequent failure of normal fertilization,
which involves formation of two polar bodies and two pronuclei. To clarify the reasons for this, we hypothesized that ICSI does not properly trigger
sperm-induced fertilization events, especially intracellular Ca2+ signaling, also known as Ca2+ oscillation. We also suspected that the
use of in vitro-matured oocytes might negatively affect fertilization events and embryonic development of sperm-injected oocytes. Therefore, we
compared the patterns of Ca2+ oscillation, the efficiency of oocyte activation and normal fertilization, and embryo development to the blastocyst
stage among in vivo- or in vitro-matured oocytes after ICSI or in vitro fertilization (IVF). Unexpectedly, we
found that the pattern of Ca2+ oscillation, such as the frequency and amplitude of Ca2+ rises, in oocytes after ICSI was similar to that
in oocytes after IVF, irrespective of the oocyte source. However, half of the oocytes failed to become activated after ICSI and showed no Ca2+
oscillation. Moreover, the embryonic development of normal fertilized oocytes was reduced when in vitro-matured oocytes were used, irrespective
of the fertilization method employed. These findings suggest that low embryo production efficiency after ICSI is attributable mainly to poor developmental
ability of in vitro-matured oocytes and a lack of Ca2+ oscillation, rather than the pattern of oscillation.
Collapse
Affiliation(s)
- Michiko Nakai
- Division of Animal Sciences, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki 305-8602, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Yoo H, Kim E, Hwang SU, Yoon JD, Jeon Y, Park KM, Kim KJ, Jin M, Lee CK, Lee E, Kim H, Kim G, Hyun SH. Ultrastructural comparison of porcine putative embryonic stem cells derived by in vitro fertilization and somatic cell nuclear transfer. J Reprod Dev 2016; 62:177-85. [PMID: 26821870 PMCID: PMC4848575 DOI: 10.1262/jrd.2015-124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The ultrastructure of porcine putative embryonic stem cells and porcine fetal fibroblasts (PFFs) was
analyzed by transmission electron microscopy. The aim of this study was to compare the features of organelles
in in vitro fertilization (IVF) derived porcine embryonic stem cells (IVF-pESCs) and somatic
cell nuclear transfer (SCNT) derived pESCs (SCNT-pESCs). Also, the features of organelles in high-passage
IVF-pESCs were compared with those in low-passage cells. The ultrastructure of PFFs showed rare microvilli on
the cell surfaces, polygonal or irregular nuclei with one to two reticular-shaped nucleoli and euchromatin,
low cytoplasm-to-nucleus ratios, rare ribosomes, rare rough endoplasmic reticulum, elongated mitochondria,
rich lysosomes and rich phagocytic vacuoles. IVF-pESCs showed rare microvilli on the cell surfaces, round or
irregular nuclei with one to two reticular-shaped nucleoli and euchromatin, low cytoplasm-to-nucleus ratios,
rich ribosomes, long stacks of rough endoplasmic reticulum, elongated mitochondria, rare lysosomes and rare
autophagic vacuoles. By contrast, SCNT-pESCs showed rich microvilli with various lengths and frequencies on
the cell surfaces, polygonal nuclei with one reticular shaped nucleoli and heterochromatin, high
cytoplasm-to-nucleus ratios, rare ribosomes, rare rough endoplasmic reticulum, round mitochondria, rich
lysosomes and rich phagocytic vacuoles with clear intercellular junctions. Furthermore, high-passage IVF-pESCs
showed irregularly shaped colonies, pyknosis and numerous lysosomes associated with autophagic vacuoles
showing signs of apoptosis. In conclusion, this study confirms that the ultrastructural characteristics of
pESCs differ depending on their origin. These ultrastructural characteristics might be useful in biomedical
research using pESCs, leading to new insights regarding regenerative medicine and tissue repair.
Collapse
Affiliation(s)
- Hyunju Yoo
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Uysal F, Akkoyunlu G, Ozturk S. Dynamic expression of DNA methyltransferases (DNMTs) in oocytes and early embryos. Biochimie 2015; 116:103-13. [PMID: 26143007 DOI: 10.1016/j.biochi.2015.06.019] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 06/26/2015] [Indexed: 11/26/2022]
Abstract
Epigenetic mechanisms play critical roles in oogenesis and early embryo development in mammals. One of these epigenetic mechanisms, DNA methylation is accomplished through the activities of DNA methyltransferases (DNMTs), which are responsible for adding a methyl group to the fifth carbon atom of the cytosine residues within cytosine-phosphate-guanine (CpG) and non-CpG dinuclotide sites. Five DNMT enzymes have been identified in mammals including DNMT1, DNMT2, DNMT3A, DNMT3B, and DNMT3L. They function in two different methylation processes: maintenance and de novo. For maintenance methylation, DNMT1 preferentially transfers methyl groups to the hemi-methylated DNA strands following DNA replication. However, for de novo methylation activities both DNMT3A and DNMT3B function in the methylation of the unmodified cytosine residues. Although DNMT3L indirectly contributes to de novo methylation process, DNMT2 enables the methylation of the cytosine 38 in the anticodon loop of aspartic acid transfer RNA and does not methylate DNA. In this review article, we have evaluated and discussed the existing published studies to characterize the spatial and temporal expression patterns of the DNMTs in mouse, bovine and human oocytes and early embryos. We have also reviewed the effects of in vitro culture conditions (serum abundance and glucose concentration), aging, superovulation, vitrification, and somatic cell nuclear transfer technology on the dynamics of DNMTs.
Collapse
Affiliation(s)
- Fatma Uysal
- Department of Histology and Embryology, Akdeniz University, School of Medicine, Antalya, Turkey
| | - Gokhan Akkoyunlu
- Department of Histology and Embryology, Akdeniz University, School of Medicine, Antalya, Turkey
| | - Saffet Ozturk
- Department of Histology and Embryology, Akdeniz University, School of Medicine, Antalya, Turkey.
| |
Collapse
|
13
|
Jeon Y, Yoon JD, Cai L, Hwang SU, Kim E, Zheng Z, Jeung E, Lee E, Hyun SH. Zinc deficiency during in vitro maturation of porcine oocytes causes meiotic block and developmental failure. Mol Med Rep 2015; 12:5973-82. [PMID: 26238161 DOI: 10.3892/mmr.2015.4125] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 06/23/2015] [Indexed: 11/06/2022] Open
Abstract
The present study investigated the effects of zinc deficiency during in vitro maturation (IVM) of porcine oocytes. Zinc deficiency was induced by administering the membrane‑permeable zinc chelator N,N,N',N'‑tetrakis‑(2‑pyridylmethyl)‑ethylendiamine (TPEN). First, the effects of zinc deficiency during IVM on a TPEN‑treated group and a TPEN+zinc-treated group compared with a control group were assessed. The oocyte maturation rates and subsequent embryonic developmental competence of the TPEN+zinc‑treated oocytes were similar to those of the control oocytes (metaphase II [MII] rate, 93.0 and 92.7%, respectively, and blastocyst [BL] formation rate, 42.0 and 40.0%, respectively). These results were significantly different from those obtained for the TPEN‑treated oocytes (MII rate, 0.61%; BL formation rate, 0%). Although the TPEN‑treated oocytes were arrested at metaphase I (MI), the distribution of microtubules was normal. However, microfilament formation was abnormal in the TPEN‑treated oocytes. Furthermore, the effect of a temporary zinc deficiency during IVM on oocyte maturation and subsequent embryonic development was assessed. TPEN (10 µM) was added to the IVM medium for 0, 7, 15 or 22 h. The 0 h‑treated oocytes showed an 83.9% MII rate, while the 7 h‑treated oocytes had a significantly lower MII rate (44.8%). Most of the 15- and 22 h‑treated oocytes were arrested at MI (MI rate: 98.0 and 97.2%, respectively; MII rate, 0% in both groups). Reductions in the BL formation were dependent on the TPEN treatment duration (29.3, 9.2, 0, and 0% after 0, 7, 15 and 22 h, respectively). In conclusion, zinc is an essential element for successful oocyte maturation and embryonic development in pigs. Zinc deficiency caused a meiotic block and had lasting effects on early embryonic development.
Collapse
Affiliation(s)
- Yubyeol Jeon
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Junchul David Yoon
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Lian Cai
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Seon-Ung Hwang
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Eunhye Kim
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Zhong Zheng
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Euibae Jeung
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Eunsong Lee
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Gangwon 200-710, Republic of Korea
| | - Sang-Hwan Hyun
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| |
Collapse
|
14
|
Jeon Y, Yoon JD, Cai L, Hwang SU, Kim E, Zheng Z, Lee E, Kim DY, Hyun SH. Supplementation of zinc on oocyte in vitro maturation improves preimplatation embryonic development in pigs. Theriogenology 2014; 82:866-74. [DOI: 10.1016/j.theriogenology.2014.06.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 05/30/2014] [Accepted: 06/28/2014] [Indexed: 01/18/2023]
|
15
|
Effects of resveratrol on vitrified porcine oocytes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:920257. [PMID: 24223236 PMCID: PMC3816072 DOI: 10.1155/2013/920257] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 08/31/2013] [Indexed: 01/29/2023]
Abstract
Vitrified MII porcine oocytes are characterized by reduced developmental competence, associated with the activation of the apoptotic pathway. Resveratrol (R), a polyphenolic compound present in several vegetal sources, has been reported to exert, among all its other biological effects, an antiapoptotic one. The aim of this study was to determine the effects of R (2 µM) on the apoptotic status of porcine oocytes vitrified by Cryotop method, evaluating phosphatidylserine (PS) exteriorization and caspases activation. R was added during IVM (A); 2 h postwarming incubation (B); vitrification/warming and 2 h postwarming incubation (C); all previous phases (D). Data on PS exteriorization showed, in each treated group, a significantly higher (P < 0.05) percentage of live nonapoptotic oocytes as compared with CTR; moreover, the percentage of live apoptotic oocytes was significantly (P < 0.05) lower in all R-treated groups relative to CTR. The results on caspase activation showed a tendency to an increase of viable oocytes with inactive caspases in B, C, and D, while a significant (P < 0.05) increase in A compared to CTR was recorded. These data demonstrate that R supplementation in various phases of IVM and vitrification/warming procedure can modulate the apoptotic process, improving the resistance of porcine oocytes to cryopreservation-induced damage.
Collapse
|