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Martino NA, Marzano G, Mastrorocco A, Lacalandra GM, Vincenti L, Hinrichs K, Dell Aquila ME. Use of time-lapse imaging to evaluate morphokinetics of in vitro equine blastocyst development after oocyte holding for two days at 15°C versus room temperature before intracytoplasmic sperm injection. Reprod Fertil Dev 2020; 31:1862-1873. [PMID: 31708015 DOI: 10.1071/rd19223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/17/2019] [Indexed: 01/25/2023] Open
Abstract
Time-lapse imaging was used to establish the morphokinetics of equine embryo development to the blastocyst stage after invitro oocyte maturation (IVM), intracytoplasmic sperm injection (ICSI) and embryo culture, in oocytes held overnight at room temperature (22-27°C; standard conditions) before IVM. Embryos that developed to the blastocyst stage underwent precleavage cytoplasmic extrusion and cleavage to the 2-, 3- and 4-cell stages significantly earlier than did embryos that arrested in development. We then determined the rate of blastocyst formation after ICSI in oocytes held for 2 days at either 15°C or room temperature before IVM (15-2d and RT-2d treatment groups respectively). The blastocyst development rate was significantly higher in the 15-2d than in the RT-2d group (13% vs 0% respectively). The failure of blastocyst development in the RT-2d group precluded comparison of morphokinetics of blastocyst development between treatments. In any condition examined, development to the blastocyst stage was characterised by earlier cytoplasmic extrusion before cleavage, earlier cleavage to 2- and 4-cell stages and reduced duration at the 2-cell stage compared with non-competent embryos. In conclusion, this study presents morphokinetic parameters predictive of embryo development invitro to the blastocyst stage after ICSI in the horse. We conclude that time-lapse imaging allows increased precision for evaluating effects of different treatments on equine embryo development.
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Affiliation(s)
- N A Martino
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Str. Prov. Casamassima Km 3, 70010, Valenzano, Bari, Italy; and Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095, Grugliasco, Italy; and Corresponding author.
| | - G Marzano
- Department of Mathematics and Physics Ennio de Giorgi, University of Salento, Via per Arnesano, 73100, Lecce, Italy; and Institute of Nanotechnology, CNR Nanotec, Via per Monteroni, 73100, Lecce, Italy
| | - A Mastrorocco
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Str. Prov. Casamassima Km 3, 70010, Valenzano, Bari, Italy
| | - G M Lacalandra
- Department of Veterinary Medicine, University of Bari Aldo Moro, Str. Prov. Casamassima Km 3, 70010, Valenzano, Bari, Italy
| | - L Vincenti
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095, Grugliasco, Italy
| | - K Hinrichs
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466, USA
| | - M E Dell Aquila
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Str. Prov. Casamassima Km 3, 70010, Valenzano, Bari, Italy
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2
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Qiao F, Ge H, Ma X, Zhang Y, Zuo Z, Wang M, Zhang Y, Wang Y. Bovine uterus-derived exosomes improve developmental competence of somatic cell nuclear transfer embryos. Theriogenology 2018; 114:199-205. [PMID: 29653387 DOI: 10.1016/j.theriogenology.2018.03.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 03/13/2018] [Accepted: 03/16/2018] [Indexed: 01/15/2023]
Abstract
Exosomes widely exist in various tissues and body fluids, including blood, tissue fluid, and urine. In the present study, exosomes were first isolated from the early luteal phase uterus and confirmed through morphological examination, immunofluorescence (IF) staining of special membrane antigen, and Western blot. The effects of exosomes on the developmental competence of somatic cell nuclear transfer (SCNT) embryos were investigated. Transmission electron microscopy results showed that the isolated exsomes were spherical particles with a 50 nm-150 nm diameter. Immunostaining showed that the surface of these isolated particles were CD9 positive, which was confirmed using Western blot. Supplementing SCNT embryos with these isolated exsomes on day 4 of culture significantly increased the blastocyst formation rate (31% vs. 34%, 40.3%, and 34.3%) and hatching rate (30.3% vs. 33.3%, 40.7%, and 35%) in comparison with the non-supplementation (control), and day 3 and day 5 supplementation groups. Blastocysts from the exsome supplementation groups showed higher inner cell mass/trophectoderm cell ratio (48% vs 37.9%) and lower apoptosis index (2.1% vs 6.5%) than the control group. The gene expression analysis of the blastocysts also showed that the exsomes supplementation significantly enhanced the expression levels of IFNT and acrogranin and decreased the expression levels of HSP70, BAX and BIP. In conclusion, the present study indicated that the early luteal phase uterus secretes exosomes, which might play important roles in the development of SCNT embryos.
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Affiliation(s)
- Fang Qiao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Hui Ge
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Xiaonan Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Ying Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhenzi Zuo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Mengyun Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Yongsheng Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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3
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Lin FH, Zhang WL, Li H, Tian XD, Zhang J, Li X, Li CY, Tan JH. Role of autophagy in modulating post-maturation aging of mouse oocytes. Cell Death Dis 2018; 9:308. [PMID: 29472597 PMCID: PMC5833823 DOI: 10.1038/s41419-018-0368-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 01/29/2018] [Accepted: 01/30/2018] [Indexed: 11/30/2022]
Abstract
Mechanisms for post-maturation oocyte aging (PMOA) are not fully understood, and whether autophagy plays any role in PMOA is unknown. To explore the role of autophagy in PMOA, expression of autophagosomes and effects of the autophagy (macro-autophagy) activity on PMOA were observed in mouse oocytes. Oocyte activation rates and active caspase-3 levels increased continuously from 0 to 18 h of in vitro aging. While levels of microtubule-associated protein light chain 3 (LC3)-II increased up to 12 h and decreased thereafter, contents of p62 decreased from 0 to 12 h and then elevated to basal level by 18 h. However, the LC3-II/I ratio remained unchanged following aging in different media or for different times. During in vitro aging up to 12 h, upregulating autophagy with rapamycin or lithium chloride decreased activation susceptibility, cytoplasmic calcium, p62 contents, oxidative stress, caspase-3 activation and cytoplasmic fragmentation while increasing developmental competence, LC3-II contents, LC3-II/I ratio, mitochondrial membrane potential, spindle/chromosome integrity and normal cortical granule distribution. Downregulating autophagy with 3-methyladenine (3-MA) produced opposite effects on all these parameters except cytoplasmic fragmentation. After 12 h of aging culture, however, regulating autophagy with either rapamycin/lithium chloride or 3-MA had no impact on oocyte activation susceptibility. It is concluded that autophagy plays an important role in regulating PMOA. Thus, during the early stage of PMOA, autophagy increases as an adaptive response to prevent further apoptosis, but by the late stage of PMOA, the activation of more caspases blocks the autophagic process leading to severer apoptosis.
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Affiliation(s)
- Fei-Hu Lin
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P. R. China
| | - Wei-Ling Zhang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P. R. China
| | - Hong Li
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P. R. China
| | - Xiao-Dan Tian
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P. R. China
| | - Jie Zhang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P. R. China
| | - Xiao Li
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P. R. China
| | - Chuan-Yong Li
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P. R. China
| | - Jing-He Tan
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P. R. China.
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Roychoudhury S, Agarwal A, Virk G, Cho CL. Potential role of green tea catechins in the management of oxidative stress-associated infertility. Reprod Biomed Online 2017; 34:487-498. [DOI: 10.1016/j.rbmo.2017.02.006] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 01/27/2017] [Accepted: 02/03/2017] [Indexed: 12/25/2022]
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5
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Qu P, Qing S, Liu R, Qin H, Wang W, Qiao F, Ge H, Liu J, Zhang Y, Cui W, Wang Y. Effects of embryo-derived exosomes on the development of bovine cloned embryos. PLoS One 2017; 12:e0174535. [PMID: 28350875 PMCID: PMC5370134 DOI: 10.1371/journal.pone.0174535] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 03/11/2017] [Indexed: 01/21/2023] Open
Abstract
The developmental competence of in vitro cultured (IVC) embryos is markedly lower than that of their in vivo counterparts, suggesting the need for optimization of IVC protocols. Embryo culture medium is routinely replaced three days after initial culture in bovine, however, whether this protocol is superior to continuous nonrenewal culture method under current conditions remains unclear. Using bovine somatic cell nuclear transfer (SCNT) embryos as the model, our results showed that compared with routine renewal treatment, nonrenewal culture system significantly improved blastocyst formation, blastocyst quality (increased total cell number, decreased stress and apoptosis, enhanced Oct-4 expression and ratio of ICM/TE), as well as following development to term. Existence and function of SCNT embryo-derived exosomes were then investigated to reveal the cause of impaired development induced by culture medium replacement. Exosomes were successfully isolated through differential centrifugation and identified by both electron microscopy and immunostaining against exosomal membrane marker CD9. Supplementation of extracted exosomes into freshly renewed medium significantly rescued not only blastocyst formation and quality (in vitro development), but also following growth to term (in vivo development). Notably, ratio of ICM/TE and calving rate were enhanced to a similar level as that in nonrenewal group. In conclusion, our results for the first time indicate that 1: bovine SCNT embryos can secrete exosomes into chemically defined culture medium during IVC; 2: secreted exosomes are essential for SCNT blastocyst formation, blastocyst quality, and following development to term; 3: removal of exosomes induced by culture medium replacement impairs SCNT embryo development, which can be avoided by nonrenewal culture procedure or markedly recovered by exosome supplementation.
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Affiliation(s)
- Pengxiang Qu
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
| | - Suzhu Qing
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
| | - Ruiqi Liu
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
| | - Hongyu Qin
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
| | - Weiwei Wang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
| | - Fang Qiao
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
| | - Hui Ge
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
| | - Jun Liu
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
- * E-mail: (YZ); (WC); (YW)
| | - Wei Cui
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, United States of America
- * E-mail: (YZ); (WC); (YW)
| | - Yongsheng Wang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, PR China
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, United States of America
- * E-mail: (YZ); (WC); (YW)
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6
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Weng Q, Liu Z, Li B, Liu K, Wu W, Liu H. Oxidative Stress Induces Mouse Follicular Granulosa Cells Apoptosis via JNK/FoxO1 Pathway. PLoS One 2016; 11:e0167869. [PMID: 27936150 PMCID: PMC5148000 DOI: 10.1371/journal.pone.0167869] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 11/21/2016] [Indexed: 01/03/2023] Open
Abstract
The c-Jun N-terminal protein kinase (JNK) plays an important role in the regulation of cell apoptosis. Forkhead box O (FoxO) transcription factors are involved in diverse biological processes, including cellular metabolism, cell apoptosis, and cell cycle. However, the JNK/FoxO1 pathway involved in the process of apoptosis induced by oxidative stress remains to be elucidated. Here, we demonstrated that the JNK activity significantly increased in response to oxidative stress in mouse follicular granulosa cells (MGCs). SP600125, a selective JNK inhibitor, attenuated the oxidative stress-induced MGCs apoptosis. Oxidative stress enhanced the FoxO1 nuclear translocation by activating the JNK activity. Moreover, JNK mediated the dissociation of FoxO1 from 14-3-3 proteins in MGCs after the treatment with H2O2. Finally, oxidative stress up-regulated the expression of FoxO1 via JNK mediation of FoxO1 self-regulation in MGCs. Taken together, our findings suggest that JNK/FoxO1 is involved in the regulation of oxidative stress-induced cell apoptosis in MGCs.
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Affiliation(s)
- Qiannan Weng
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Zequn Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
- Liaoning Province of Animal Product Safety Supervision, Shenyang, China
| | - Bojiang Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Kaiqing Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Wangjun Wu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Honglin Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
- * E-mail:
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7
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Oocyte aging-induced Neuronatin (NNAT) hypermethylation affects oocyte quality by impairing glucose transport in porcine. Sci Rep 2016; 6:36008. [PMID: 27782163 PMCID: PMC5080544 DOI: 10.1038/srep36008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/10/2016] [Indexed: 01/24/2023] Open
Abstract
DNA methylation plays important roles in regulating many physiological behaviors; however, few studies were focused on the changes of DNA methylation during oocyte aging. Early studies showed that some imprinted genes’ DNA methylation had been changed in aged mouse oocytes. In this study, we used porcine oocytes to test the hypothesis that oocyte aging would alter DNA methylation pattern of genes and disturb their expression in age oocytes, which affected the developmental potential of oocytes. We compared several different types of genes and found that the expression and DNA methylation of Neuronatin (NNAT) were disturbed in aged oocytes significantly. Additional experiments demonstrated that glucose transport was impaired in aged oocytes and injection of NNAT antibody into fresh oocytes led to the same effects on glucose transport. These results suggest that the expression of NNAT was declined by elevating DNA methylation, which affected oocyte quality by decreasing the ability of glucose transport in aged oocytes.
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8
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Suttirojpattana T, Somfai T, Matoba S, Parnpai R, Nagai T, Geshi M. Effect of medium additives during liquid storage on developmental competence of in vitro matured bovine oocytes. Anim Sci J 2016; 88:231-240. [PMID: 27169667 PMCID: PMC5298027 DOI: 10.1111/asj.12623] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 12/11/2015] [Accepted: 01/07/2016] [Indexed: 11/29/2022]
Abstract
Our aim was to improve the developmental competence of bovine oocytes during their liquid storage by using additives. In vitro matured oocytes were stored for 20 h at 25°C in HEPES buffered TCM 199 medium (base medium). After storage, in vitro embryo development after in vitro fertilization was compared to those of non-stored (control) ones. Addition of 10% (v/v) newborn calf serum or 10.27 mmol/L pyruvate alone to the base medium did not improve blastocyst formation rates in stored oocytes; however, their simultaneous addition significantly improved the rate compared with those stored in base medium (P < 0.05). Supplementation of the holding medium with dithiothreitol (DTT) at any concentrations did not improve embryo development from stored oocytes. Although supplementation with cyclosporine A (CsA) significantly reduced apoptosis and membrane damage rates during storage, it did not improve the developmental competence of oocytes. 1,2-bis(2-aminophenoxy) ethane N,N,N',N'-tetraacetic acid tetrakis-acetoxymethyl ester and ruthenium red had no effect on oocyte apoptotic rates. Blastocyst formation rates in all stored groups remained significantly lower than that of the control. In conclusion, pyruvate and serum had a synergic effect to moderate the reduction of oocyte quality during storage, whereas mitochondrial membrane pore inhibitor CsA and the antioxidant DTT did not affect their developmental competence.
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Affiliation(s)
- Tayita Suttirojpattana
- Embryo Technology and Stem Cell Research Center, Suranaree University of Technology, Nakhon Ratchasima, Thailand.,Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Tamas Somfai
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Satoko Matoba
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Rangsun Parnpai
- Embryo Technology and Stem Cell Research Center, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Takashi Nagai
- Food and Fertilizer Technology Center, Taipei, Taiwan
| | - Masaya Geshi
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
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9
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Zheng J, Yin XQ, Ge W, He GF, Qian WP, Ma JY, Shen W, Yin S, Sun QY. Post-ovulatory aging of mouse oocytesin vivoandin vitro: Effects of caffeine on exocytosis and translocation of cortical granules. Anim Sci J 2016; 87:1340-1346. [DOI: 10.1111/asj.12611] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 12/28/2015] [Accepted: 01/08/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Jie Zheng
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology; Qingdao Agricultural University; Qingdao Shandong China
- Institute of Reproductive Sciences; Qingdao Agricultural University; Qingdao China
| | - Xun-Qiang Yin
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology; Qingdao Agricultural University; Qingdao Shandong China
- Institute of Reproductive Sciences; Qingdao Agricultural University; Qingdao China
| | - Wei Ge
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology; Qingdao Agricultural University; Qingdao Shandong China
- Institute of Reproductive Sciences; Qingdao Agricultural University; Qingdao China
| | - Gui-Fang He
- College of Life Science; Qingdao Agricultural University; Qingdao China
- Institute of Reproductive Sciences; Qingdao Agricultural University; Qingdao China
| | - Wei-Ping Qian
- Department of Reproductive Medicine; Peking University Shenzhen Hospital; Medical Center of Peking University; Shenzhen Guangdong China
| | - Jun-Yu Ma
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology; Qingdao Agricultural University; Qingdao Shandong China
- Institute of Reproductive Sciences; Qingdao Agricultural University; Qingdao China
| | - Wei Shen
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology; Qingdao Agricultural University; Qingdao Shandong China
- Institute of Reproductive Sciences; Qingdao Agricultural University; Qingdao China
| | - Shen Yin
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology; Qingdao Agricultural University; Qingdao Shandong China
- Institute of Reproductive Sciences; Qingdao Agricultural University; Qingdao China
| | - Qing-Yuan Sun
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology; Qingdao Agricultural University; Qingdao Shandong China
- Institute of Reproductive Sciences; Qingdao Agricultural University; Qingdao China
- State Key Laboratory of Reproductive Biology; Institute of Zoology; Chinese Academy of Sciences; Beijing China
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Suttirojpattana T, Somfai T, Matoba S, Nagai T, Parnpai R, Geshi M. The effect of temperature during liquid storage of in vitro-matured bovine oocytes on subsequent embryo development. Theriogenology 2015; 85:509-518.e1. [PMID: 26483307 DOI: 10.1016/j.theriogenology.2015.09.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 09/16/2015] [Accepted: 09/18/2015] [Indexed: 11/24/2022]
Abstract
The aim of the present study was to optimize the temperature for the temporal storage of matured bovine oocytes. In vitro-matured bovine oocytes were preserved in HEPES-buffered TCM199 medium supplemented with 10% newborn calf serum at different temperatures (4 °C, 15 °C, 25 °C, and 38.5 °C) for 20 hours. Embryo development and blastocyst quality after in vitro fertilization, cytoplasmic ATP and glutathione levels in oocytes, and the frequency of apoptotic oocytes were compared among storage groups and a control group without storage. Among the storage groups, those at 25 °C and 38.5 °C showed the highest rates of blastocyst development (19.3% and 24.5%, respectively) compared with those stored at 4 °C and 15 °C (8.5% and 14.9%, respectively); however, blastocyst formation rates in all storage groups were lower than that in the control group (39.8%; P < 0.05). Storage at 38.5 °C and 15 °C was associated with reduced cell numbers in resultant blastocysts compared with the control and the 25 °C storage groups. Storage at 4 °C reduced metabolic activity of oocytes characterized by their lower ATP levels compared with the other groups. Storage for 20 hours significantly reduced the glutathione content in oocytes in all groups in a similar manner, irrespective of the temperature. Storage at 4 °C or 15 °C but not at 25 °C and 38.5 °C significantly increased the percentage of apoptotic oocytes compared with the control group. In conclusion, 25 °C was found to be the most suitable temperature for the temporal storage of matured bovine oocytes regarding both the developmental competence of oocytes and the quality of resultant blastocysts.
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Affiliation(s)
- Tayita Suttirojpattana
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan; Embryo Technology and Stem Cell Research Center, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Tamas Somfai
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan.
| | - Satoko Matoba
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Takashi Nagai
- Food and Fertilizer Technology Center, Taipei, Taiwan; Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - Rangsun Parnpai
- Embryo Technology and Stem Cell Research Center, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
| | - Masaya Geshi
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Tsukuba, Japan
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11
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Lee PC, Wildt DE, Comizzoli P. Nucleolar Translocation of Histone Deacetylase 2 Is Involved in Regulation of Transcriptional Silencing in the Cat Germinal Vesicle. Biol Reprod 2015; 93:33. [PMID: 26108793 DOI: 10.1095/biolreprod.115.129106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 06/15/2015] [Indexed: 12/21/2022] Open
Abstract
Histone deacetylase 2 (HDAC2) is a key transcriptional coregulator that is suspected to play a role during oogenesis. It is known that RNA transcription in the cat germinal vesicle (GV) stops during folliculogenesis at the late antral follicle stage and is unrelated to histone deacetylation or chromatin condensation. The objective of the present study was to determine if and how HDAC2 participates in transcription regulation in the cat GV. Spatiotemporal HDAC2 protein expression was examined by immunostaining oocytes from primary to large antral follicles. HDAC2 was detected in the majority of GVs within oocytes from early, small, and large antral follicles. At early and small antral stages, HDAC2 was found primarily in the GV's nucleoplasm. There then was a significant shift in HDAC2 localization into the nucleolus, mostly in oocytes from large antral follicles. Assessments revealed that transcription was active in oocytes that contained nucleoplasm-localized HDAC2, whereas nucleolar-bound HDAC2 was associated with loss of both global transcription and ribosomal RNA presence at all antral stages. When oocytes were exposed to the HDAC inhibitor valproic acid, results indicated that HDAC regulated transcriptional activity in the nucleoplasm, but not in the nucleolus. Collective results suggest that nucleolar translocation of HDAC2 is associated with transcriptional silencing in the GV, thereby likely contributing to an oocyte's acquisition of competence.
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Affiliation(s)
- Pei-Chih Lee
- Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, District of Columbia, and Front Royal, Virginia
| | - David E Wildt
- Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, District of Columbia, and Front Royal, Virginia
| | - Pierre Comizzoli
- Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, District of Columbia, and Front Royal, Virginia
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Combined inhibitory effects of low temperature and N-acetyl-l-cysteine on the postovulatory aging of mouse oocytes. ZYGOTE 2015; 24:195-205. [PMID: 25801325 DOI: 10.1017/s0967199415000039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The postovulatory aging of oocytes eventually affects the development of oocytes and embryos. Oxidative stress is known to accelerate the onset of apoptosis in oocytes and influence their capacity for fertilisation. This study aimed to reveal the roles of temperature and the antioxidant N-acetyl-l-cysteine in preventing the aging of postovulatory mouse oocytes. First, newly ovulated mouse oocytes were cultured at various temperature and time combinations in HCZB medium with varying concentrations of N-acetyl-l-cysteine to assess signs of aging and developmental potential. When cultured in HCZB with 300 μM N-acetyl-l-cysteine at different temperature and incubation time combinations (namely 25°C for 12 h, 15°C for 24 h and 5°C for 12 h), the increase in the susceptibility of oocytes to activating stimuli was efficiently prevented, and the developmental potential was maintained following Sr2+ activation or in vitro fertilisation. After incubation at either 15°C for 36 h or 5°C for 24 h, oocytes that had decreased blastocyst rates displayed unrecoverable abnormal cortical granule distribution together with decreased BCL2 levels, total glutathione concentrations and glutathione/glutathione disulphide (GSH/GSSG) ratios. In conclusion, postovulatory oocyte aging could be effectively inhibited by appropriate N-acetyl-l-cysteine addition at low temperatures. In addition, a simple method for the temporary culture of mature oocytes was established.
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