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Han Y, Zhang J, Liang W, Lv Y, Luo X, Li C, Qu X, Zhang Y, Gu W, Chen X, Jin Y. Follicular fluid exosome-derived miR-339-5p enhances in vitro maturation of porcine oocytes via targeting SFPQ, a regulator of the ERK1/2 pathway. Theriogenology 2024; 225:107-118. [PMID: 38805993 DOI: 10.1016/j.theriogenology.2024.04.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/15/2024] [Accepted: 04/30/2024] [Indexed: 05/30/2024]
Abstract
In this study, we aimed to investigate cytoplasmic maturation and miRNA expression of mature oocytes cultured in porcine follicular fluid exosomes. We also examined the effect of miR-339-5p on oocyte maturation. Twenty eight differentially expressed miRNAs were detected using miRNA-seq. We then transfected cumulus oocyte complexes with miR-339-5p mimics and inhibitor during culture. The results showed that exosomes increased endoplasmic reticulum levels and the amount of lipid droplets, and decreased ROS levels, lipid droplet size, and percentage of oocytes with abnormal cortical granule distribution. Overexpressing miR-339-5p significantly decreased cumulus expansion genes, oocyte maturation-related genes, target gene proline/glutamine-rich splicing factor (SFPQ), ERK1/2 phosphorylation levels, oocyte maturation rate, blastocyst rate, and lipid droplet number, but increased lipid droplet size and the ratio of oocytes with abnormal cortical granule distribution. Inhibiting miR-339-5p reversed the decrease observed during overexpression. Mitochondrial membrane potential and ROS levels did not differ significantly between groups. In summary, exosomes promote oocyte cytoplasmic maturation and miR-339-5p regulating ERK1/2 activity through SFPQ expression, thereby elevating oocyte maturation and blastocyst formation rate in vitro.
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Affiliation(s)
- Yue Han
- Yanbian University, Jilin, Yanji, 133000, China
| | | | | | - Yanqiu Lv
- Yanbian University, Jilin, Yanji, 133000, China
| | - Xiaotong Luo
- Institute of Animal Biotechnology, Jilin Academy of Agricultural Sciences, Jilin, Gongzhuling, 136100, China
| | - Chunyu Li
- Yanbian University, Jilin, Yanji, 133000, China
| | - Xinglin Qu
- Yanbian University, Jilin, Yanji, 133000, China
| | | | - Weiyu Gu
- Yanbian University, Jilin, Yanji, 133000, China
| | - Xuan Chen
- Yanbian University, Jilin, Yanji, 133000, China.
| | - Yi Jin
- Yanbian University, Jilin, Yanji, 133000, China.
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2
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Zhang J, Sun J, Ou M, Ouyang Y, Shi D, Lu F. Testosterone Supplementation Promotes Estrogen Synthesis of Buffalo Cumulus Cells Surrounding In Vitro-Matured Oocytes. Cell Reprogram 2024; 26:79-84. [PMID: 38579133 DOI: 10.1089/cell.2023.0121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024] Open
Abstract
Cumulus cells (CCs) synthesize estrogens that are essential for follicular development. However, the effects of androgen on estrogen production in buffalo CCs remain unknown. In the present study, the impacts of testosterone on estrogen synthesis of buffalo CCs surrounding in vitro-matured oocytes were investigated. The results showed that testosterone supplementation improved both the expression levels of estrogen synthesis-related genes (CYP11A1, CYP19A1, and 17β-HSD) and the secretion levels of estradiol in buffalo CCs surrounding in vitro-matured oocytes. Furthermore, testosterone treatment enhanced the sensitivity of buffalo CCs surrounding in vitro-matured oocytes to follicle-stimulating hormone (FSH). This study indicated that testosterone supplementation promoted the estrogen synthesis of buffalo CCs surrounding in vitro-matured oocytes mainly through strengthening the responsiveness of CCs to FSH. The present study serves as a foundation of acquiring high-quality recipient oocytes for buffalo somatic cell nuclear transfer.
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Affiliation(s)
- Jun Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
- Laboratory Animal Center, Guangxi Medical University, Nanning, China
| | - Junming Sun
- Laboratory Animal Center, Guangxi Medical University, Nanning, China
| | - Meizhen Ou
- Laboratory Animal Center, Guangxi Medical University, Nanning, China
| | - Yiqiang Ouyang
- Laboratory Animal Center, Guangxi Medical University, Nanning, China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
| | - Fenghua Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
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Ho TCT, Kawate N, Koyama K. Predicting nuclear maturation speed of oocytes from Japanese Black beef heifers through non-invasive observations during IVM: An attempt using machine learning algorithms. Theriogenology 2023; 209:235-242. [PMID: 37453399 DOI: 10.1016/j.theriogenology.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/18/2023]
Abstract
Nuclear maturation is an essential process in which oocytes acquire the competence to develop further. However, the time required for nuclear maturation during IVM varies among oocytes. Therefore, predicting nuclear maturation speed (NMS) could help identify the optimal timing for IVF and maximize the developmental competence of each oocyte. This study aimed to establish machine learning-based prediction models for NMS using non-invasive indicators during the individual IVM of Japanese Black (JB) beef heifer oocytes. We collected ovaries from abattoirs and aspirated cumulus-oocyte complexes (COCs) from follicles with diameters ranging between 2 and 8 mm. The COCs were matured individually for 18 h, and photographs of each COC were taken at the beginning and every 3 h from 12 h to the end of maturation. After IVM culture, we denuded COCs and stained oocytes to confirm the progression of meiosis. Only oocytes that reached the metaphase II (MII) stage were considered to have a fast NMS. Morphological features, including COC area, cumulus expansion ratio, expansion rate per hour, and expansion pattern, were extracted from the recorded photos and applied to develop prediction models for NMS using machine learning algorithms. The MII rates of oocytes with fast- and slow-predicted NMS differed when the decision tree (DT) and random forest (RF) models were employed (P < 0.05). To evaluate the relationship between predicted NMS by DT and RF models and fertilization dynamics during individual IVF, sperm penetration and pronuclear formation were evaluated at 3, 6, 9, and 12 h after IVF start, following 24 h of IVM. The association between predicted NMS and embryo development was investigated by performing IVC for seven days using microwell culture dishes after 24 h of IVM and 6 h of IVF. Predicted NMS did not show a significant association with fertilization dynamics. However, oocytes with fast-predicted NMS by the RF model exhibited a tendency towards a higher cleavage rate 48 h after IVF start (P = 0.08); no other relationship was found between predicted NMS and embryo development. These findings demonstrate the feasibility of using non-invasive indicators during IVM to develop prediction models for NMS of JB beef heifer oocytes. Although the effect of predicted NMS on embryo development remains unclear, customized treatments based on NMS predictions have the potential to improve the efficiency of in vitro embryo production following individual IVM culture.
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Affiliation(s)
- Thomas Chia-Tang Ho
- Laboratory of Theriogenology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Izumisano, 598-8531, Osaka, Japan
| | - Noritoshi Kawate
- Laboratory of Theriogenology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Izumisano, 598-8531, Osaka, Japan
| | - Keisuke Koyama
- Laboratory of Theriogenology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, Izumisano, 598-8531, Osaka, Japan.
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Yang X, Ma J, Mo L, Xiong Y, Xiong X, Lan D, Fu W, Yin S. Molecular cloning and characterization of STC1 gene and its functional analyses in yak (Bos grunniens) cumulus granulosa cells. Theriogenology 2023; 208:185-193. [PMID: 37354862 DOI: 10.1016/j.theriogenology.2023.06.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/06/2023] [Accepted: 06/15/2023] [Indexed: 06/26/2023]
Abstract
Cumulus granulosa cells (CGCs), an important type of ovarian somatic cells, carries out various functions related to oogenesis, follicular development, and steroidogenesis. Studying the biological mechanisms involved in the development and function of CGCs makes a great contribution to understanding the reproductive regulation in female animals. Stanniocalcin-1 (STC1) is an important Ca2+-regulated glycoprotein hormone that exhibits high expression levels in ovaries. In this study, we cloned the coding sequence of the yak STC1, predicted the structure of STC1 protein, detected the expression and localization of STC1 in yak ovaries, and analyzed the functions of STC1 in yak CGCs. The CDS (coding sequence) region of yak STC1 gene was found to be 744 bp and encoded 247 amino acids. Homology comparison revealed that STC1 protein was highly conserved among mammals. The STC1 mRNA displayed dynamic expression profiles in different stages of yak ovaries, and the highest expression was found in the follicular phase. Regarding localization, STC1 protein was widely distributed in various kinds of yak ovarian cells, including oocytes, mural granulosa cells, CGCs, and thecal cells. Repressing the expression of STC1 resulted in defective proliferation and survival of yak CGCs. In addition, knockdown the expression of STC1 repressed the secretion of progesterone and promoted the secretion of estrogen. Overexpression of STC1 partially rescued the proliferation of CGCs and resulted in opposite effects on the secretion of progesterone and estrogen. Several apoptosis and steroidogenesis-related genes, including BAX, BCL2, HSD3B1, HSD17B1, CYP11A1 and CYP17A1 showed altered expressions after repressing or increasing the expression of STC1 in yak CGCs. To the best of our knowledge, this study is the first to focus on the role of STC1 in yak CGCs, and the outcomes offer fresh insights into the mechanism governing yak reproduction.
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Affiliation(s)
- Xue Yang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, 610041, China
| | - Jun Ma
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, 610041, China
| | - Luoyu Mo
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, 610041, China
| | - Yan Xiong
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, 610041, China; Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province, Ministry of Education, Chengdu, Sichuan, 610041, China
| | - Xianrong Xiong
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, 610041, China; Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province, Ministry of Education, Chengdu, Sichuan, 610041, China
| | - Daoliang Lan
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, 610041, China; Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province, Ministry of Education, Chengdu, Sichuan, 610041, China
| | - Wei Fu
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, 610041, China; Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province, Ministry of Education, Chengdu, Sichuan, 610041, China
| | - Shi Yin
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, 610041, China; Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province, Ministry of Education, Chengdu, Sichuan, 610041, China; Key Laboratory of Modem Technology (Southwest Minzu University), State Ethnic Affairs Commission, Chengdu, Sichuan, 610041, China.
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5
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Gao S, Yang L, Yang X, Xiong Y, Fu W, Li J, Yin S. Sirtuin 7 is essential for the survival and synthesis of oestrogen in yak (Bos grunniens) cumulus granulosa cells. Reprod Domest Anim 2023; 58:323-332. [PMID: 36305218 DOI: 10.1111/rda.14289] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 10/21/2022] [Indexed: 02/07/2023]
Abstract
Cumulus granulosa cells (CGCs) are a type of important ovarian somatic cells that carries out various functions related to oogenesis, follicular development and embryogenesis. The study on the development and function of CGCs facilitates the understanding of reproductive regulation in female animals. Sirtuin 7 (SIRT7) is a member of the sirtuin family of NAD+-dependent deacetylases mediating numerous biological processes. In this study, we detected the localization of SIRT7 in yak ovaries as well as explored the function of SIRT7 in yak CGCs. The results revealed that the SIRT7 protein was mainly localized in the cytoplasm of oocytes, granulosa cells and theca cells. The knockdown of SIRT7 in yak CGCs repressed cell proliferation and impacted the expressions of several apoptosis-related genes. Furthermore, oestrogen synthesis was also inhibited in SIRT7-deficient yak CGCs. The expressions of several sterogenesis-related genes decreased significantly following SIRT7 knockdown. In addition, the lack of SIRT7 in yak CGCs resulted in decreased levels of the TGFB/SMAD family members TGFB1, TGFBR1 SMAD2 and SMAD3. Moreover, the activation of the TGFB/SMAD pathway by adding TGFB/SMAD pathway activator SRI-011381 partially rescued the level of oestrogen secreted by SIRT7-deficient yak CGCs, as well as the expressions of steroidogenesis-related genes NR5A1 and CYP19A1. This research is the first to focus on the role of SIRT7 in yak ovary, and the outcomes offer new insights into the mechanism governing yak reproduction.
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Affiliation(s)
- Shaoshuai Gao
- College of Animal & Veterinary, Southwest Minzu University, Chengdu, Sichuan, China
| | - Liuqing Yang
- College of Animal & Veterinary, Southwest Minzu University, Chengdu, Sichuan, China
| | - Xue Yang
- College of Animal & Veterinary, Southwest Minzu University, Chengdu, Sichuan, China
| | - Yan Xiong
- College of Animal & Veterinary, Southwest Minzu University, Chengdu, Sichuan, China.,Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Chengdu, Sichuan, China
| | - Wei Fu
- College of Animal & Veterinary, Southwest Minzu University, Chengdu, Sichuan, China.,Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Chengdu, Sichuan, China
| | - Jian Li
- College of Animal & Veterinary, Southwest Minzu University, Chengdu, Sichuan, China.,Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Chengdu, Sichuan, China
| | - Shi Yin
- College of Animal & Veterinary, Southwest Minzu University, Chengdu, Sichuan, China.,Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Chengdu, Sichuan, China.,Key Laboratory of Modem Technology (Southwest Minzu University), State Ethnic Affairs Commission, Chengdu, Sichuan, China
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Abundance of Dual Specificity Phosphatase (DUSP) 1 and DUSP6 mRNA Is Regulated by Hippo Signaling in Bovine Pre-ovulatory Granulosa Cells. Reprod Sci 2022; 30:1782-1788. [DOI: 10.1007/s43032-022-01142-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022]
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7
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Relav L, Estienne A, Price CA. Dual-specificity phosphatase 6 (DUSP6) mRNA and protein abundance is regulated by fibroblast growth factor 2 in sheep granulosa cells and inhibits c-Jun N-terminal kinase (MAPK8) phosphorylation. Mol Cell Endocrinol 2021; 531:111297. [PMID: 33964319 DOI: 10.1016/j.mce.2021.111297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 11/20/2022]
Abstract
Growth factors regulate ovarian follicle development and they signal through intracellular pathways including mitogen-activated protein kinase (MAPK) phosphorylation, which is negatively regulated by a subfamily of 23 dual-specificity phosphatases (DUSP). Using sheep granulosa cells as a model, we detected mRNA encoding 16 DUSPs in vivo and in vitro. Stimulation of cells in vitro with FGF2 increased (p < 0.05) abundance of DUSP1, DUSP2, DUSP5 and DUSP6 mRNA, and abundance of DUSP1 and DUSP6 proteins (p < 0.05). In contrast, neither FGF8b nor FGF18 had any major effect on DUSP mRNA abundance. Inhibition of DUSP6 action with the inhibitor BCI significantly increased (p < 0.05) MAPK8 (JNK) phosphorylation but not phosphoMAPK14 (p38) or MAPK3/1 (ERK1/2) abundance. This study suggests that FGFs stimulate DUSP protein abundance, that DUSP6 regulates MAPK8 phosphorylation in granulosa cells, and DUSPs are involved in the differential MAPK signaling of individual FGF ligands.
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Affiliation(s)
- Lauriane Relav
- Centre de recherche en reproduction animale, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, J2S 7C6, QC, Canada
| | - Anthony Estienne
- Centre de recherche en reproduction animale, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, J2S 7C6, QC, Canada
| | - Christopher A Price
- Centre de recherche en reproduction animale, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, J2S 7C6, QC, Canada.
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Akin N, von Mengden L, Herta AC, Billooye K, van Leersum J, Cava-Cami B, Saucedo-Cuevas L, Klamt F, Smitz J, Anckaert E. Glucose metabolism characterization during mouse in vitro maturation identifies alterations in cumulus cells†. Biol Reprod 2021; 104:902-913. [PMID: 33480981 DOI: 10.1093/biolre/ioab008] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 11/24/2020] [Accepted: 01/15/2021] [Indexed: 01/01/2023] Open
Abstract
In vitro maturation (IVM) is an assisted reproduction technique with reduced hormone-related side-effects. Several attempts to implement IVM in routine practice have failed, primarily due to its relatively low efficiency compared with conventional in vitro fertilization (IVF). Recently, capacitation (CAPA)-IVM-a novel two-step IVM method-has improved the embryology outcomes through synchronizing the oocyte nuclear and cytoplasmic maturation. However, the efficiency gap between CAPA-IVM and conventional IVF is still noticeable especially in the numerical production of good quality embryos. Considering the importance of glucose for oocyte competence, its metabolization is studied within both in vivo and CAPA-IVM matured mouse cumulus-oocyte-complexes (COCs) through direct measurements in both cellular compartments, from transcriptional and translational perspectives, to reveal metabolic shortcomings within the CAPA-IVM COCs. These results confirmed that within in vivo COC, cumulus cells (CCs) are highly glycolytic, whereas oocytes, with low glycolytic activity, are deviating their glucose towards pentose phosphate pathway. No significant differences were observed in the CAPA-IVM oocytes compared with their in vivo counterparts. However, their CCs exhibited a precocious increase of glycolytic activity during the pre-maturation culture step and activity was decreased during the IVM step. Here, specific alterations in mouse COC glucose metabolism due to CAPA-IVM culture were characterized using direct measurements for the first time. Present data show that, while CAPA-IVM CCs are able to utilize glucose, their ability to support oocytes during final maturation is impaired. Future CAPA-IVM optimization strategies could focus on adjusting culture media energy substrate concentrations and/or implementing co-culture strategies.
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Affiliation(s)
- Nazli Akin
- Follicle Biology Laboratory (FOBI), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Lucia von Mengden
- Laboratory of Cellular Biochemistry, Department of Biochemistry, ICBS, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre (RS), Brazil
| | - Anamaria-Cristina Herta
- Follicle Biology Laboratory (FOBI), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Katy Billooye
- Follicle Biology Laboratory (FOBI), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Julia van Leersum
- Follicle Biology Laboratory (FOBI), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Berta Cava-Cami
- Follicle Biology Laboratory (FOBI), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Laura Saucedo-Cuevas
- Follicle Biology Laboratory (FOBI), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Fabio Klamt
- Laboratory of Cellular Biochemistry, Department of Biochemistry, ICBS, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre (RS), Brazil
| | - Johan Smitz
- Follicle Biology Laboratory (FOBI), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Ellen Anckaert
- Follicle Biology Laboratory (FOBI), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
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Participation of the adenosine salvage pathway and cyclic AMP modulation in oocyte energy metabolism. Sci Rep 2019; 9:18395. [PMID: 31804531 PMCID: PMC6895058 DOI: 10.1038/s41598-019-54693-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 11/18/2019] [Indexed: 12/27/2022] Open
Abstract
A follicular spike in cyclic AMP (cAMP) and its subsequent degradation to AMP promotes oocyte maturation and ovulation. In vitro matured (IVM) oocytes do not receive the cAMP increase that occurs in vivo, and artificial elevation of cAMP in IVM cumulus-oocyte complexes improves oocyte developmental potential. This study examined whether mouse oocytes can use the cAMP degradation product AMP to generate ATP via the adenosine salvage pathway, and examined whether pharmacological elevation of cAMP in IVM cumulus-oocyte complexes alters ATP levels. Oocytes cultured with isotopic 13C5-AMP dose-dependently produced 13C5-ATP, however total cellular ATP remained constant. Pharmacological elevation of cAMP using forskolin and IBMX prior to IVM decreased oocyte ATP and ATP:ADP ratio, and promoted activity of the energy regulator AMPK. Conversely, cumulus cells exhibited higher ATP and no change in AMPK. Culture of oocytes without their cumulus cells or inhibition of their gap-junctional communication yielded lower oocyte 13C5-ATP, indicating that cumulus cells facilitate ATP production via the adenosine salvage pathway. In conclusion, this study demonstrates that mouse oocytes can generate ATP from AMP via the adenosine salvage pathway, and cAMP elevation alters adenine nucleotide metabolism and may provide AMP for energy production via the adenosine salvage pathway during the energetically demanding process of meiotic maturation.
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10
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Fu XH, Chen CZ, Li S, Han DX, Wang YJ, Yuan B, Gao Y, Zhang JB, Jiang H. Dual-specificity phosphatase 1 regulates cell cycle progression and apoptosis in cumulus cells by affecting mitochondrial function, oxidative stress, and autophagy. Am J Physiol Cell Physiol 2019; 317:C1183-C1193. [DOI: 10.1152/ajpcell.00012.2019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Dual-specificity phosphatase 1 ( DUSP1) is differentially expressed in cumulus cells of different physiological states, but its specific function and mechanism of action remain unclear. In this study, we explored the effects of DUSP1 expression inhibition on cell cycle progression, proliferation, apoptosis, and lactate and cholesterol levels in cumulus cells and examined reactive oxygen species levels, mitochondrial function, autophagy, and the expression of key cytokine genes. The results showed that inhibition of DUSP1 in cumulus cells caused abnormal cell cycle progression, increased cell proliferation, decreased apoptosis rates, increased cholesterol synthesis and lactic acid content, and increased cell expansion. The main reason for these effects was that inhibition of DUSP1 reduced ROS accumulation, increased glutathione level and mitochondrial membrane potential, and reduced autophagy levels in cells. These results indicate that DUSP1 limits the biological function of bovine cumulus cells under normal physiological conditions and will greatly contribute to further explorations of the physiological functions of cumulus cells and the interactions of the cumulus-oocyte complex.
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Affiliation(s)
- Xu-huang Fu
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Cheng-zhen Chen
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Sheng Li
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Dong-xu Han
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Yi-jie Wang
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Bao Yuan
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Yan Gao
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Jia-bao Zhang
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Hao Jiang
- College of Animal Sciences, Jilin University, Changchun, Jilin, China
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11
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Soto-Heras S, Menéndez-Blanco I, Catalá MG, Izquierdo D, Thompson JG, Paramio MT. Biphasic in vitro maturation with C-type natriuretic peptide enhances the developmental competence of juvenile-goat oocytes. PLoS One 2019; 14:e0221663. [PMID: 31442286 PMCID: PMC6707569 DOI: 10.1371/journal.pone.0221663] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 08/12/2019] [Indexed: 12/21/2022] Open
Abstract
In vitro embryo production success in juvenile animals is compromised due to their intrinsic lower oocyte quality. Conventional in vitro maturation (IVM) impairs oocyte competence by inducing spontaneous meiotic resumption. A series of experiments were performed to determine if maintaining meiotic arrest during a pre-maturation culture phase (pre-IVM) prior to conventional IVM improves oocyte competence of juvenile-goat (2 months old) cumulus-oocyte complexes (COCs). In experiment 1, COCs were cultured with C-type natriuretic peptide (CNP; 0, 50, 100, 200 nM) for 6 and 8 h. Nuclear stage was assessed, revealing no differences in the incidence of germinal vesicle (GV) breakdown. In experiment 2, the same CNP concentrations were assessed plus 10 nM estradiol, the known upstream agonist activating expression of NPR2, the exclusive receptor of CNP. CNP (200 nM) plus estradiol increased the rate of oocytes at GV stage at 6 h compared to control group (74.7% vs 28.3%; P<0.05) with predominantly condensed chromatin configuration. In experiment 3, relative mRNA quantification revealed NPR2 expression was down-regulated after pre-IVM (6 h). In experiment 4, analysis of transzonal projections indicated that pre-IVM maintained cumulus-oocyte communication after oocyte recovery. For experiments 5 and 6, biphasic IVM (6 h pre-IVM with CNP and estradiol, plus 24 h IVM) and control IVM (24 h) were compared. Biphasic IVM increased intra-oocyte glutathione and decreased ROS, up-regulated DNA-methyltransferase 1 and pentraxin 3 expression and led to an increase in rate of blastocyst development compared to control group (30.2% vs 17.2%; P<0.05). In conclusion, a biphasic IVM, including a pre-IVM with CNP, maintains oocyte meiotic arrest for 6 h and enhances the embryo developmental competence of oocytes from juvenile goats.
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Affiliation(s)
- Sandra Soto-Heras
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Irene Menéndez-Blanco
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Maria-Gracia Catalá
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Dolors Izquierdo
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Jeremy G. Thompson
- Robinson Research Institute, School of Paedriatics and Reproductive Health, The University of Adelaide, Adelaide, South Australia, Australia
- Adelaide Medical School, The University of Adelaide, Adelaide, South Australia, Australia
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics and Institute for Photonics and Advanced Sensing, Davies Research Centre, The University of Adelaide, Adelaide, South Australia, Australia
| | - Maria-Teresa Paramio
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
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12
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Park KM, Kim KJ, Jin M, Han Y, So KH, Hyun SH. The use of pituitary adenylate cyclase-activating polypeptide in the pre-maturation system improves in vitro developmental competence from small follicles of porcine oocytes. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2019; 32:1844-1853. [PMID: 31480175 PMCID: PMC6819676 DOI: 10.5713/ajas.19.0162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 06/26/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVE We investigated how pituitary adenylate cyclase-activating polypeptide (PACAP) affects embryonic development during pre-in vitro maturation (pre-IVM) using porcine oocytes isolated from small follicles. METHODS We divided the follicles into the experimental groups by size (SF, small follicles; MF, medium follicles) and treated with and without PACAP and cultured for 18 hours (Pre-SF[-]PACAP; without PACAP, Pre-SF[+]PACAP; with PACAP) before undergoing IVM. The gene expression related to extracellular matrix formation (amphiregulin, epiregulin, and hyaluronan synthase 2 [HAS2]) and apoptosis (Bcl-2-associated X [BAX], B-cell lymphoma 2, and cysteine-aspartic acid protease 3) was investigated after maturation. The impact on developmental competence was assessed by the cleavage and blastocyst rate and total cell number of blastocysts in embryos generated from parthenogenesis (PA) and in vitro fertilization (IVF). RESULTS Cleavage rates in the Pre-SF(+)PACAP after PA were significantly higher than SF and Pre-SF(-)PACAP (p<0.05). The cleavage rates between MF and Pre- SF(+)PACAP groups yielded no notable differences after IVF. Pre-SF(+)PACAP displayed the higher rate of blastocyst formation and greater total cell number than SF and Pre-SF(-)PACAP (p<0.05). Cumulus cells showed significant upregulation of HAS2 mRNA in the Pre-SF(+)PACAP compared to the SF (p<0.05). In comparison to other groups, the Pre-SF(+)PACAP group displayed a downregulation in mRNA expression of BAX in matured oocytes (p<0.05). CONCLUSION The PACAP treatment during pre-IVM improved the developmental potential of porcine oocytes derived from SF by regulating cumulus expansion and apoptosis of oocytes.
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Affiliation(s)
- Kyu-Mi Park
- Institute for Stem Cell and Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju 28644, Korea.,Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Kyu-Jun Kim
- Institute for Stem Cell and Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju 28644, Korea.,Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Minghui Jin
- Institute for Stem Cell and Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju 28644, Korea.,Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Yongquan Han
- Institute for Stem Cell and Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju 28644, Korea.,Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Kyoung-Ha So
- Institute for Stem Cell and Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju 28644, Korea.,Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Sang-Hwan Hyun
- Institute for Stem Cell and Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju 28644, Korea.,Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
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13
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Mitochondrial function in immature bovine oocytes is improved by an increase of cellular cyclic AMP. Sci Rep 2019; 9:5167. [PMID: 30914704 PMCID: PMC6435665 DOI: 10.1038/s41598-019-41610-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 03/11/2019] [Indexed: 11/08/2022] Open
Abstract
Although in vitro maturation (IVM) of oocytes is important for assisted reproduction, the rate of development of embryos from IVM oocytes is lower than from their in vivo counterparts. It has been shown that an artificial increase of intracellular cAMP before culture significantly improves oocyte developmental competence in cattle and mice. Here, we revealed that forskolin and 3-isobutyl-1-methylxanthine treatment of prophase-stage oocytes induced the expression of genes required for glycolysis, fatty acid degradation, and the mitochondrial electron transport system and improved mitochondrial functions and ATP levels in oocytes without involving nuclear maturation. We propose the existence of a comprehensive energy-supply system in oocytes under follicle-stimulating hormone stimulation as a potential explanation of how oocytes acquire developmental competence.
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14
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Ramos Leal G, Santos Monteiro CA, Souza-Fabjan JMG, de Paula Vasconcelos CO, Garcia Nogueira LA, Reis Ferreira AM, Varella Serapião R. Role of cAMP modulator supplementations during oocyte in vitro maturation in domestic animals. Anim Reprod Sci 2018; 199:1-14. [PMID: 30449707 DOI: 10.1016/j.anireprosci.2018.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 10/11/2018] [Accepted: 11/07/2018] [Indexed: 12/17/2022]
Abstract
Cyclic adenosine monophosphate (cAMP) is an important molecule in signal transduction within the cell, functioning as a second cell messenger of gonadotrophin stimulation. The concentration of cAMP in cumulus-oocyte complexes (COCs) is known to be controlled through modulation of its synthesis by adenylyl cyclase (AC) and by degradation through the cyclic nucleotide phosphodiesterase (PDE) enzymes. One of the main obstacles for in vitro embryo production is the optimization of reproduction processes that occur in oocyte maturation. The function of cAMP is important in maintaining meiotic arrest in mammalian oocytes. When the oocyte is physically removed from the antral follicle for in vitro maturation (IVM), intra-oocyte cAMP concentrations decrease and spontaneous meiotic resumption begins, due to the depletion of inhibitory factors from the follicle. In many studies, relatively greater cAMP concentrations before IVM has been reported to improve oocyte competence, leading to subsequent benefits in embryonic development in different species. There, therefore, has been an increase in oocyte cAMP concentrations with several treatments and different approaches, such as invasive AC, stimulators of AC activity, PDE inhibitors, and cAMP analogs. The aim of this review is to comprehensively evaluate and provide data related to (i) the use of cAMP modulators during IVM and the effects on completion of meiosis and cytoplasmic reorganization, which are required for development of oocytes with the capacity to contribute to fertilization and subsequent embryonic development; and (ii) the main cAMP modulators and the effects when used in oocyte IVM.
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Affiliation(s)
- Gabriela Ramos Leal
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil.
| | - Clara Ana Santos Monteiro
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Joanna Maria Gonçalves Souza-Fabjan
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil.
| | - Carlos Otávio de Paula Vasconcelos
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Luiz Altamiro Garcia Nogueira
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Ana Maria Reis Ferreira
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Raquel Varella Serapião
- Empresa de Pesquisa Agropecuária do Estado do Rio de Janeiro (PESAGRO RIO) - Avenida São Boa Ventura, 770, 24120-19, Fonseca, Niterói, Rio de Janeiro, Brazil
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15
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Xiong XR, Lan DL, Li J, Lin YQ, Li MY. Supplementation of cilostazol during in vitro maturation enhances the meiosis and developmental competence of yak oocytes by influencing cAMP content and mRNA expression. Anim Reprod Sci 2017; 186:21-30. [PMID: 28935242 DOI: 10.1016/j.anireprosci.2017.08.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 07/24/2017] [Indexed: 01/11/2023]
Abstract
The efficiency of in vitro embryo production remains low compared with that observed in vivo. Recent studies have independently shown that cyclic adenosine monophosphate (cAMP) modulation prior to in vitro maturation (IVM) supplementation improves oocyte developmental competence. In this context, special cAMP modulators have been applied during IVM as promising alternatives to improve this biotechnology. Accordingly, this study was conducted to evaluate the effects of treatment with cilostazol, a PDE3 inhibitor, during pre-IVM culture on oocyte meiotic maturation in yak. Immature yak cumulus-oocyte complexes (COCs) were treated in vitro without (control) or with 5μM cilostazol for 0, 2, or 4h prior to IVM. Results showed that the presence of cilostazol in pre-IVM medium significantly increased the percentages of oocytes at metaphase II stage compared with that in the control groups (P<0.05). Moreover, pre-IVM with cilostazol significantly enhanced intraoocyte cAMP and glutathione (GSH) levels at the pre-IVM or IVM phase relative to the no pre-IVM groups (P<0.05). After in vitro fertilization (IVF) and parthenogenetic activation (PA), the developmental competences of oocytes and embryo quality were improved significantly after pre-IVM with cilostazol compared with the control groups (P<0.05), given that the cleavage and blastocyst formation rates and the total number of blastocyst cells were increased. The presence of cilostazol also increased the levels of mRNA expression for adenylate cyclase 3 (ADCY3) and protein kinase 1 (PKA1), as well as decreased the abundance of phosphodiesterase 3A (PDE3A) in COCs and IVF blastocysts, compared with their control counterparts (P<0.05). The results demonstrated that the meiotic progression of immature yak oocytes could be reversibly affected by cAMP modulators. By contrast, treatment with cilostazol during pre-IVM positively affected the developmental competence of yak oocytes, probably by improving intraoocyte cAMP and GSH levels and regulating mRNA expression patterns. We concluded that appropriate treatment with cilostazol during pre-IVM would be beneficial for oocyte maturation in vitro.
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Affiliation(s)
- Xian-Rong Xiong
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China; College of Life Science and Technology, Southwest Minzu University, Chengdu, Sichuan 610041, China
| | - Dao-Liang 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
| | - Ya-Qiu Lin
- College of Life Science and Technology, Southwest Minzu University, Chengdu, Sichuan 610041, China
| | - Ming-Yang Li
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China.
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16
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Transcriptomic signature of the follicular somatic compartment surrounding an oocyte with high developmental competence. Sci Rep 2017; 7:6815. [PMID: 28755009 PMCID: PMC5533789 DOI: 10.1038/s41598-017-07039-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 06/22/2017] [Indexed: 12/11/2022] Open
Abstract
During antral folliculogenesis, developmental competence of prospective oocytes is regulated in large part by the follicular somatic component to prepare the oocyte for the final stage of maturation and subsequent embryo development. The underlying molecular mechanisms are poorly understood. Oocytes reaching the advanced stage of follicular growth by administration of exogenous follicle-stimulating hormone (FSH) possess higher developmental competence than oocytes in FSH-untreated smaller follicles. In this study, the transcriptomic profile of the cumulus cells from cows receiving FSH administration (FSH-priming) was compared, as a model of high oocyte competence, with that from untreated donor cows (control). Ingenuity Pathway Analysis showed that cumulus cells receiving FSH-priming were rich in down-regulated transcripts associated with cell movement and migration, including the extracellular matrix-related transcripts, probably preventing the disruption of cell-to-cell contacts. Interestingly, the transcriptomic profile of up-regulated genes in the control group was similar to that of granulosa cells from atretic follicles. Interferon regulatory factor 7 was activated as the key upstream regulator of FSH-priming. Thus, acquisition of developmental competence by oocytes can be ensured by the integrity of cumulus cells involved in cell-to-cell communication and cell survival, which may help achieve enhanced oocyte-somatic cell coupling.
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17
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Gilchrist RB, Luciano AM, Richani D, Zeng HT, Wang X, Vos MD, Sugimura S, Smitz J, Richard FJ, Thompson JG. Oocyte maturation and quality: role of cyclic nucleotides. Reproduction 2016; 152:R143-57. [PMID: 27422885 DOI: 10.1530/rep-15-0606] [Citation(s) in RCA: 139] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 07/15/2016] [Indexed: 12/12/2022]
Abstract
The cyclic nucleotides, cAMP and cGMP, are the key molecules controlling mammalian oocyte meiosis. Their roles in oocyte biology have been at the forefront of oocyte research for decades, and many of the long-standing controversies in relation to the regulation of oocyte meiotic maturation are now resolved. It is now clear that the follicle prevents meiotic resumption through the actions of natriuretic peptides and cGMP - inhibiting the hydrolysis of intra-oocyte cAMP - and that the pre-ovulatory gonadotrophin surge reverses these processes. The gonadotrophin surge also leads to a transient spike in cAMP in the somatic compartment of the follicle. Research over the past two decades has conclusively demonstrated that this surge in cAMP is important for the subsequent developmental capacity of the oocyte. This is important, as oocyte in vitro maturation (IVM) systems practised clinically do not recapitulate this cAMP surge in vitro, possibly accounting for the lower efficiency of IVM compared with clinical IVF. This review particularly focuses on this latter aspect - the role of cAMP/cGMP in the regulation of oocyte quality. We conclude that clinical practice of IVM should reflect this new understanding of the role of cyclic nucleotides, thereby creating a new generation of ART and fertility treatment options.
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Affiliation(s)
- R B Gilchrist
- Discipline of Obstetrics and GynaecologySchool of Women's and Children's Health, University of New South Wales, Sydney, New South Wales, Australia
| | - A M Luciano
- Reproductive and Developmental Biology LaboratoryDepartment of Health, Animal Science and Food Safety, University of Milan, Milano, Italy
| | - D Richani
- Discipline of Obstetrics and GynaecologySchool of Women's and Children's Health, University of New South Wales, Sydney, New South Wales, Australia
| | - H T Zeng
- Center for Reproductive MedicineSixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - X Wang
- Discipline of Obstetrics and GynaecologySchool of Women's and Children's Health, University of New South Wales, Sydney, New South Wales, Australia Department of Obstetrics and GynaecologySt George Public Hospital, Sydney, Australia
| | - M De Vos
- Follicle Biology LaboratoryUniversity Hospital UZBrussel, Medical School, Vrije Universiteit Brussel, Brussels, Belgium
| | - S Sugimura
- Institute of AgricultureDepartment of Biological Production, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - J Smitz
- Follicle Biology LaboratoryUniversity Hospital UZBrussel, Medical School, Vrije Universiteit Brussel, Brussels, Belgium
| | - F J Richard
- Centre de Recherche en Biologie de la ReproductionDépartement des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Canada
| | - J G Thompson
- School of MedicineRobinson Research Institute and ARC Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, South Australia, Australia
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18
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Park B, Lee H, Lee Y, Elahi F, Lee J, Lee ST, Park CK, Hyun SH, Lee E. Cilostamide and forskolin treatment during pre-IVM improves preimplantation development of cloned embryos by influencing meiotic progression and gap junction communication in pigs. Theriogenology 2016; 86:757-65. [PMID: 27056415 DOI: 10.1016/j.theriogenology.2016.02.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 02/24/2016] [Accepted: 02/27/2016] [Indexed: 10/22/2022]
Abstract
This study was conducted to evaluate the effects of treatment with the cAMP modulators cilostamide and/or forskolin during pre-IVM culture on meiotic progression, gap junction communication, intraoocyte cAMP level and glutathione content, embryonic development after parthenogenesis, and somatic cell nuclear transfer in pigs. Cumulus-oocyte complexes were cultured for 24 hours in unsupplemented medium or media containing 20 μM cilostamide and/or 50 μM forskolin. After pre-IVM, oocytes were cultured for 41 to 44 hours in a standard IVM medium to induce oocyte maturation. When the nuclear status of oocytes was examined after pre-IVM for 24 hours, a higher (P < 0.01) proportion of oocytes treated with forskolin (85.5%) and cilostamide + forskolin (92.6%) remained at the germinal vesicle stage compared with untreated (20.6%) and cilostamide-treated oocytes (54.7%). cAMP level in pre-IVM oocytes was significantly increased by combined treatment with cilostamide + forskolin (21.38 fmol/oocyte) relative to the no pre-IVM control, no treatment, cilostamide, and forskolin groups (2.85, 1.88, 1.74, and 8.95 fmol/oocyte, respectively). Forskolin with or without cilostamide significantly maintained open-gap junction communication relative to no treatment. Blastocyst formation in parthenogenesis was significantly (P < 0.01) improved by forskolin (65.3%) relative to other treatments (28.3% to 48.1%). Supplementation of pre-IVM with dibutyryl cAMP showed similar blastocyst formation as forskolin treatment (61.1% and 61.0%, respectively). In somatic cell nuclear transfer, simultaneous treatment with cilostamide + forskolin significantly (P < 0.05) increased embryonic development to the blastocyst stage (42.9%) relative to the no pre-IVM, control, and cilostamide groups (32.3, 28.6, and 32.8%, respectively). The glutathione contents in pre-IVM oocytes were increased by no treatment, forskolin, and cilostamide + forskolin (1.38, 1.39, and 1.27 pixels/oocyte, respectively) compared with no pre-IVM and cilostamide (1.00 and 0.99 pixels/oocyte, respectively; P < 0.05). Our results reported that the meiotic progression of immature pig oocytes could be reversibly attenuated by cAMP, whereas treatment with cilostamide and forskolin during pre-IVM had positive effects on developmental competence of oocytes in pigs, probably by improving cytoplasmic maturation.
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Affiliation(s)
- Bola Park
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - Hanna Lee
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - Yongjin Lee
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - Fazle Elahi
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - Joohyeong Lee
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - Seung Tae Lee
- Division of Applied Animal Science, College of Animal Life Science, Kangwon National University, Chuncheon, Korea
| | - Choon-Keun Park
- Division of Applied Animal Science, College of Animal Life Science, Kangwon National University, Chuncheon, Korea
| | - Sang-Hwan Hyun
- Laboratory of Veterinary Embryology and Biotechnology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - Eunsong Lee
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea; Institute of Veterinary Science, Kangwon National University, Chuncheon, Korea.
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19
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Elahi F, Lee H, Lee Y, Park B, Lee J, Hyun SH, Lee E. Cilostazol Improves Developmental Competence of Pig Oocytes by Increasing Intraoocyte Cyclic Adenosine Monophosphate Level and Delaying Meiotic Resumption. Reprod Domest Anim 2016; 51:220-6. [PMID: 26834044 DOI: 10.1111/rda.12669] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Accepted: 01/04/2016] [Indexed: 11/26/2022]
Abstract
Cilostazol (CLZ) is a cyclic adenosine monophosphate (cAMP) modulator that influences the steady state of the meiotic stage. This study was conducted to determine the effects of CLZ treatment during in vitro maturation (IVM) on developmental competence of pig oocytes. Immature oocytes were exposed to 0 (control), 0.5, 2 and 4 μm CLZ during the first 22 h of IVM. Nuclear maturation, intraoocyte glutathione content and embryo cleavage after parthenogenesis (PA) and somatic cell nuclear transfer (SCNT) were not influenced by CLZ at any concentrations. However, 4 μm CLZ significantly (p < 0.05) improved blastocyst formation after PA (52.1% vs 38.7-46.0%) and SCNT relative to other concentrations (40.8% vs 25.0-30.7%). The mean cell numbers of SCNT blastocysts were significantly increased by 4 μm CLZ compared to the control (42.6 cells vs 35.3 cells/blastocyst). CLZ treatment significantly increased the intraoocyte cAMP level and effectively arrested oocytes at the germinal vesicle (GV) and GV break down stages compared to the control (74.5% vs 45.4%). Our results demonstrated that improved developmental competence of PA and SCNT pig embryos occurred via better synchronization of nuclear and cytoplasmic maturation induced by increased cAMP and delayed meiotic resumption after CLZ treatment.
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Affiliation(s)
- F Elahi
- College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - H Lee
- College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - Y Lee
- College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - B Park
- College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - J Lee
- College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - S-H Hyun
- Laboratory of Veterinary Embryology and Biotechnology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - E Lee
- College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea.,Institute of Veterinary Science, Kangwon National University, Chuncheon, Korea
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