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Gao L, Wang S, Xu J, Lu D, Cui Y. SET improved oocyte maturation by serine/threonine protein phosphatase 2A and inhibited oocyte apoptosis in mouse oocytes. Reprod Biol 2022; 22:100668. [PMID: 35728284 DOI: 10.1016/j.repbio.2022.100668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/11/2022] [Accepted: 06/07/2022] [Indexed: 10/18/2022]
Abstract
SET is a multifunctional protein involved in a variety of molecular processes such as cell apoptosis and cell-cycle regulation. In ovaries SET is predominantly expressed in theca cells and oocytes. In polycystic ovary syndrome (PCOS) patients the expression of SET was increased than healthy people. The current study was designed to determine whether SET plays a role in oocyte maturation and apoptosis, which may provide clues for the underlying pathological mechanism of follicular development in PCOS patients. Oocytes at germinal vesicle (GV) stage were collected from 6-week-old female ICR mice ovaries. The expression of SET was manipulated by AdCMV-SET and AdH1-SiRNA/SET adenoviruses. SET overexpression improved oocyte maturation whereas SET knockdown inhibited oocyte maturation. Moreover, SET negatively regulated serine/threonine protein phosphatase 2A (PP2A) activity in oocytes. Treatment with PP2A inhibitor okadaic acid (OA) promoted oocyte maturation. Furthermore, PP2A knockdown confirmed the role of PP2A in oocyte maturation, and OA was able to block the AdH1-SiRNA/SET-mediated inhibition on oocyte maturation. The central role of PP2A in SET-mediated regulation of oocyte maturation was confirmed by the finding that SET increased the expression of bone morphogenetic protein 15 (BMP15) and growth differentiation factor 9 (GDF9) and PP2A inhibited their expressions. Besides, SET inhibited oocyte apoptosis through decreasing the expression of caspase 3 and caspases 8, while PP2A had no effect on oocyte apoptosis. SET promoted oocyte maturation by inhibiting PP2A activity and inhibited oocyte apoptosis in mouse in-vitro cultured oocytes, which may provide a pathologic pathway leading to impaired oocyte developmental competence in PCOS.
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Affiliation(s)
- Lingling Gao
- Department of Obstetrics and Gynecology, Clinical Medical College, Yangzhou University, Yangzhou 225001, China.
| | - Siying Wang
- Department of Obstetrics and Gynecology, Clinical Medical College, Yangzhou University, Yangzhou 225001, China
| | - Jianbo Xu
- Department of Obstetrics and Gynecology, Clinical Medical College, Yangzhou University, Yangzhou 225001, China
| | - Dan Lu
- Department of Obstetrics and Gynecology, Clinical Medical College, Yangzhou University, Yangzhou 225001, China
| | - Yugui Cui
- State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
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Elgebaly MM, Hazaa ABM, Amer HA, Mesalam A. L-Cysteine improves bovine oocyte developmental competence in vitro via activation of oocyte-derived growth factors BMP-15 and GDF-9. Reprod Domest Anim 2022; 57:734-742. [PMID: 35313050 DOI: 10.1111/rda.14113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/18/2022] [Indexed: 12/17/2022]
Abstract
This study was designed to investigate the effect of different concentrations of L-cysteine supplementation into the maturation medium on the oocyte nuclear maturation, cumulus cell expansion, ultrastructure of the oocytes and the expression of oocyte-derived growth factors BMP-15, GDF-9 and CB-1 genes. Cumulus oocyte complexes (COCs) were collected from cow's ovaries obtained from abattoir and incubated at 38.5°C in maturation media supplemented with 0, 0.6, 0.8 or 1 mM L-cysteine in 5% CO2 under humidified air for 24 hr. We found that a significantly higher percentage of oocytes progressed to metaphase II stage in the in vitro maturation (IVM) medium supplemented with L-cysteine, particularly 0.8 mM group, compared with untreated control oocytes. Additionally, L-cysteine treatment significantly increased the number of expanded COCs and the degree of expansion of individual COCs. Results of RT-qPCR showed significant increase in expression levels of BMP-15 and GDF-9 in L-cysteine-treated groups compared with control one. Electron microgram showed improvement of cytoplasmic maturation regarding ultrastructure of the oocytes and oocyte-cumulus cell gap junction communication in all L-cysteine-treated groups especially 0.8 mM L-cysteine-treated one. In conclusion, supplementation of IVM medium with a potential anti-oxidant, L-cysteine can effectively improve in vitro oocytes cytoplasmic and nuclear maturation via activation of oocyte maturation related BMP-15 and GDF-9 genes in bovine oocytes, benefiting the extended researches about the potential applications of L-cysteine in mammalian breeding technologies.
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Affiliation(s)
- Maha Mosad Elgebaly
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Abo Bakr Maher Hazaa
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Hussein Ahmed Amer
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Ayman Mesalam
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
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Ibrahim AH. Genetic variants of the BMP2 and GDF9 genes and their associations with reproductive performance traits in Barki ewes. Small Rumin Res 2021. [DOI: 10.1016/j.smallrumres.2020.106302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Adib M, Seifati SM, Ashkezari MD, Khoradmehr A, Rezaee-Ranjbar-Sardari R, Tahajjodi SS, Aflatoonian B. The effect of the human cumulus cells-conditioned medium on in vitro maturation of mouse oocyte: An experimental study. Int J Reprod Biomed 2020; 18:1019-1028. [PMID: 33426412 PMCID: PMC7778757 DOI: 10.18502/ijrm.v18i12.8023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/12/2020] [Accepted: 07/29/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND To increase the results of infertility treatment, many efforts have been made to improve the treatment methods. As assisted reproductive technology is mainly using cell culture methods, one of the approaches to improve this technology is conditioned medium from different sources. It is desirable to apply in vitro maturation (IVM) and use oocytes from normal cycles instead of stimulating ovulation. OBJECTIVE To investigate the effect of human cumulus cell condition medium (hCCCM) on the IVM of immature mouse oocytes and morphology. MATERIALS AND METHODS In this experimental study, 240 germinal vesile oocytes were collected from four-six wk-old mice after 48 hr of 5IU pregnant mare serum gonadotropin (PMSG) injection and cultured in hCCCM (test group, n = 120) and DMEM + 20% FBS (control group, n = 120). The IVM rates and changes in perivitelline space (PVS) and shape were investigated at 8, 16, and 24 hr following the culture. The mature (MII) oocytes were subjected to in vitro fertilization (IVF) and the fertilization rate was assessed in three days. RESULTS A significant difference was observed between the maturation rates in the hCCCM and control groups (24.16% vs 0%; p = 0.001), as well as morphologic changes between the two groups (p = 0.04, p = 0.05). The development rate for MII oocytes attained from IVM in the hCCCM group was 27.58% (2-cell) and 6.89% (4-cell). Data displayed that hCCCM is an effective medium for oocytes maturation compared to the control medium. CONCLUSION hCCCM supports oocyte in vitro growth and maturation. Moreover, hCCCM changes the oocyte shape and size of perivitelline space.
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Affiliation(s)
- Maryam Adib
- Medical Biotechnology Research Center, Ashkezar Branch, Islamic Azad University, Ashkezar, Yazd, Iran
| | - Seyed Morteza Seifati
- Medical Biotechnology Research Center, Ashkezar Branch, Islamic Azad University, Ashkezar, Yazd, Iran
| | | | - Arezoo Khoradmehr
- Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | | | - Somayyeh Sadat Tahajjodi
- Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Behrouz Aflatoonian
- Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Advanced Medical Sciences and Technologies, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Adib M, Seifati SM, Dehghani Ashkezari M, Akyash F, Khoradmehr A, Aflatoonian B. Effect of Human Testicular Cells Conditioned Medium on In Vitro Maturation and Morphology of Mouse Oocytes. INTERNATIONAL JOURNAL OF FERTILITY & STERILITY 2020; 14:175-184. [PMID: 33098383 PMCID: PMC7604698 DOI: 10.22074/ijfs.2020.6097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 04/10/2020] [Indexed: 12/25/2022]
Abstract
Background Testicular cell conditioned medium (TCCM) has been shown to induce female germ cell development
in vitro from embryonic stem cells (ESCs). Testicular cells (TCs) secrete a variety of growth factors such as growth
differentiation factor-9 (GDF-9), bone morphogenetic protein 4 (BMP-4), stem cell factor (SCF), leukemia inhibitory
factor (LIF), and other, that could improve oocyte maturation. Here we have investigated the effect of human TCCM
(hTCCM) on in vitro maturation (IVM) and morphology of mouse oocytes. Materials and Methods In this experimental study, 360 germinal vesicle (GV) oocytes were obtained from NMRI
mice, aged 4-6 weeks that had received 5 IU pregnant mare's serum gonadotropin (PMSG) 48 hours before. GV
oocytes were subjected to IVM. 120 GV oocytes were cultured in each medium; hTCCM as the test group, DMEM
+ 20%FBS as the control group and Ham’s F10 + HFF medium as the sham group. The rates of the IVM and perivi-
telline space (PVS) changes were recorded at 8, 16 and 24 hours after culture. The metaphase II (MII) oocytes were
subjected for in vitro fertilization (IVF) and the fertilization rate was evaluated after 1, 2, and 3 days. Results There was a significant difference between the maturation rates in hTCCM (31.67% MII) and the control [0% MII,
P<0.05, (7.5% MI, 52.5% deg. and 40%GV)] groups but there was not a significant difference between the maturation rates
in hTCCM and the sham group (53.33% MII, P>0.05). IVF success rate for MII oocytes obtained from IVM in the hTCCM
group was 28.94% (n=11). Our data showed that hTCCM is an effective medium for GV oocyte growth and maturation
compared to the control medium. Conclusion Our findings show that TCCM supports oocyte IVM in mice and affect oocyte morphology.
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Affiliation(s)
- Maryam Adib
- Medical Biotechnology Research Center, Ashkezar Branch, Islamic Azad University, Ashkezar, Yazd, Iran
| | - Seyed Morteza Seifati
- Medical Biotechnology Research Center, Ashkezar Branch, Islamic Azad University, Ashkezar, Yazd, Iran. Electronic Address:
| | | | - Fatemeh Akyash
- Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Genetics and Fertility Unit, Erfan Hospital, Tehran, Iran
| | - Arezoo Khoradmehr
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Behrouz Aflatoonian
- Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.Electronic Address:.,Department of Reproductive Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Department of Advanced Medical Sciences and Technologies, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Morselli MG, Loiacono M, Colombo M, Mortarino M, Luvoni GC. Nuclear competence and genetic expression of growth differentiation factor-9 (GDF-9) of canine oocytes in 3D culture. Reprod Domest Anim 2019; 53 Suppl 3:117-124. [PMID: 30474337 DOI: 10.1111/rda.13336] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 08/30/2018] [Indexed: 11/26/2022]
Abstract
To evaluate the ability of a 3D culture system in improving the nuclear and molecular competence of canine oocytes, barium alginate microcapsules were used for in vitro maturation (IVM) and the expression profile of one selected oocyte-secreted factor, the growth differentiation factor-9 (GDF-9) was analysed. In Experiment I, canine grade I cumulus-oocyte complexes (COCs) were in vitro matured in 3D microcapsules in a controlled atmosphere for 72 hr, and meiosis resumption rates were compared to those of oocytes cultured in traditional 2D microdrops of medium. In Experiment II, a primer pair specific for canine GDF-9 was designed, and preliminary tested in conventional PCR on genomic DNA. Total RNA content was isolated from oocytes at different time intervals (T0-T24-T48-T72) during in vitro 3D culture, and a reverse transcription to cDNA was performed. The expression of target gene was assessed by quantitative Reverse Transcription Real-Time PCR (qRT-PCR), and the obtained amplicons were sequenced to check the specificity of the analysis. Canine COCs resumed meiosis at higher rates in 3D microcapsules than in 2D microdrops (p < 0.05), even though no significant differences in the proportions of oocytes achieving full maturational stages were obtained. A significant dynamic decrease in GDF-9 expression was recorded during culture: after 72 hr of IVM, the GDF-9 transcription significantly dropped (p = 0.018) compared to 24 and 48 hr. In conclusion, in vitro 3D culture represents an efficient system for IVM of canine oocytes, and the expression profile of GDF-9 well reflects temporal dynamics for the acquisition of developmental competence in this species.
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Affiliation(s)
- Maria Giorgia Morselli
- Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare, Università degli Studi di Milano, Milan, Italy
| | - Monica Loiacono
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano, Milan, Italy
| | - Martina Colombo
- Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare, Università degli Studi di Milano, Milan, Italy
| | - Michele Mortarino
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano, Milan, Italy
| | - Gaia Cecilia Luvoni
- Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare, Università degli Studi di Milano, Milan, Italy
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Lou Q, Li T, Wu P, Qiu C, Zhang G, Wang J. Polymorphism identification in GDF9 gene and its association analysis with reproduction traits in Jinghai Yellow chicken. Anim Biotechnol 2018; 30:332-341. [PMID: 30394177 DOI: 10.1080/10495398.2018.1516222] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
GDF9 (growth differentiation factor 9) belongs to the transforming growth factor-β (TGF-β) superfamily and plays an irreplaceable role in female fertility. To reveal its genetic effects on productivity performance in chickens, 373 Jinghai Yellow chickens were chosen randomly to detect SNPs in GDF9 by PCR-SSCP and DNA sequencing methods. Eventually, four SNPs (g.2053G > A, g.2275T > C, g.2338C > T, g.2420T > C) in total had been detected. Amongst them, g.2420T > C was first found significantly associated with reproduction trait in chickens and heterozygous type C2T2 had higher average egg weight at 300 days of age (AEWD300) than T2T2 (p < 0.01). Least squares analysis showed that age at first laying (AFE) of H1 and H1H1 chickens were significantly earlier than that of H7 and H7H7 ones, respectively (p < 0.05). H1H5 hens showed higher AEWD300 than H4H7 ones (p < 0.05). For total egg number at 300 days of age (END300), mean of H5H5 was significantly higher than that of H4H4 (p < 0.05). Hence, the study suggested that hybrid vigor at g.2420T > C could be utilized in practice. H1H1, H1H5 and H5H5 could be the dominant diplotypes for chicken breeding. The study may contribute to the breeding progress of productive chickens and supply reference for oviparous animal production practice.
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Affiliation(s)
- Qiuhong Lou
- College of Animal Science and Technology, Yangzhou University , Yangzhou , Jiangsu , China
| | - Tingting Li
- College of Animal Science and Technology, Yangzhou University , Yangzhou , Jiangsu , China
| | - Pengfei Wu
- College of Animal Science and Technology, Yangzhou University , Yangzhou , Jiangsu , China
| | - Cong Qiu
- Jiangsu Jinghai Poultry Group Co., Ltd. , Nantong , Jiangsu , China
| | - Genxi Zhang
- College of Animal Science and Technology, Yangzhou University , Yangzhou , Jiangsu , China
| | - Jinyu Wang
- College of Animal Science and Technology, Yangzhou University , Yangzhou , Jiangsu , China
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Current perspectives on in vitro maturation and its effects on oocyte genetic and epigenetic profiles. SCIENCE CHINA-LIFE SCIENCES 2018; 61:633-643. [PMID: 29569023 DOI: 10.1007/s11427-017-9280-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 12/26/2017] [Indexed: 12/14/2022]
Abstract
In vitro maturation (IVM), the maturation in culture of immature oocytes, has been used in clinic for more than 20 years. Although IVM has the specific advantages of low cost and minor side effects over controlled ovarian stimulation, the prevalence of IVM is less than 1% of routine in vitro fertilization and embryo transfer techniques in many reproductive centers. In this review, we searched the MEDLINE database for all full texts and/or abstract articles published in English with content related to oocyte IVM mainly between 2000 and 2016. Many different aspects of the IVM method may influence oocyte potential, including priming, gonadotrophin, growth factors, and culture times. The culture conditions of IVM result in alterations in the oocyte or cumulus cell transcriptome that are not observed under in vivo culture conditions. Additionally, epigenetic modifications, such as DNA methylation or acetylation, are also different between in vitro and in vivo cultured oocytes. In sum, current IVM technique is still not popular and requires more systematic and intensive research to improve its effects and applications. This review will help point our problems, supply evidence or clues for future improving IVM technique, thus assist patients for fertility treatment or preservation as an additional option.
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Belli M, Shimasaki S. Molecular Aspects and Clinical Relevance of GDF9 and BMP15 in Ovarian Function. VITAMINS AND HORMONES 2018; 107:317-348. [PMID: 29544636 DOI: 10.1016/bs.vh.2017.12.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Growth and differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15) are oocyte-secreted factors with a leading role in the control of ovarian function in female reproduction, modulating both the cell fate of the somatic granulosa cells and the quality and developmental competence of the egg. This short review aims to consolidate the molecular aspects of GDF9 and BMP15 and their integral actions in female fertility to understand particularly their effects on oocyte quality and fetal growth. The significant consequences of mutations in the GDF9 and BMP15 genes in women with dizygotic twins as well as the clinical relevance of these oocyte factors in the pathogenesis of primary ovarian insufficiency and polycystic ovary syndrome are also addressed.
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Affiliation(s)
- Martina Belli
- University of California San Diego, School of Medicine, La Jolla, CA, United States
| | - Shunichi Shimasaki
- University of California San Diego, School of Medicine, La Jolla, CA, United States.
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He XY, Ma LB, He XN, Si WT, Zheng YM. Improved development of somatic cell cloned bovine embryos by a mammary gland epithelia cells in vitro model. J Vet Sci 2017; 17:145-52. [PMID: 26243608 PMCID: PMC4921662 DOI: 10.4142/jvs.2016.17.2.145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/17/2015] [Accepted: 07/31/2015] [Indexed: 12/18/2022] Open
Abstract
Previous studies have established a bovine mammary gland epithelia cells in vitro model by the adenovirus-mediated telomerase (hTERT-bMGEs). The present study was conducted to confirm whether hTERT-bMGEs were effective target cells to improve the efficiency of transgenic expression and somatic cell nuclear transfer (SCNT). To accomplish this, a mammary-specific vector encoding human lysozyme and green fluorescent protein was used to verify the transgenic efficiency of hTERT-bMGEs, and untreated bovine mammary gland epithelial cells (bMGEs) were used as a control group. The results showed that the hTERT-bMGEs group had much higher transgenic efficiency and protein expression than the bMGEs group. Furthermore, the nontransgenic and transgenic hTERT-bMGEs were used as donor cells to evaluate the efficiency of SCNT. There were no significant differences in rates of cleavage or blastocysts or hatched blastocysts of cloned embryos from nontransgenic hTERT-bMGEs at passage 18 and 28 groups (82.8% vs. 81.9%, 28.6% vs. 24.8%, 58.6% vs. 55.3%, respectively) and the transgenic group (80.8%, 26.5% and 53.4%); however, they were significantly higher than the bMGEs group (71.2%, 12.8% and 14.8%), (p < 0.05). We confirmed that hTERT-bMGEs could serve as effective target cells for improving development of somatic cell cloned cattle embryos.
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Affiliation(s)
- Xiao-Ying He
- School of Life Science and Technology, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Li-Bing Ma
- School of Life Science and Technology, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Xiao-Ning He
- Research and Development Center for Tissue Engineering, Xi'an 710048, China
| | - Wan-Tong Si
- School of Life Science and Technology, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yue-Mao Zheng
- College of Veterinary Medicine, Northwest A&F University, Shenyang 712100, China.,Key Laboratory of Animal Reproductive Endocrinology & Embryo Engineering, Ministry of Agriculture, Shenyang 712100, China
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Pan Y, He H, Cui Y, Baloch AR, Li Q, Fan J, He J, Yu S. Recombinant Human Bone Morphogenetic Protein 6 Enhances Oocyte Reprogramming Potential and Subsequent Development of the Cloned Yak Embryos. Cell Reprogram 2016; 17:484-93. [PMID: 26655079 DOI: 10.1089/cell.2015.0049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This study investigated the effects of bone morphogenetic protein 6 (BMP6) supplementation in the medium during in vitro maturation (IVM) on the developmental potential of oocytes and in the subsequent development of cloned yak embryos. Cumulus-oocyte complexes (COCs) were aspirated from the antral follicles of yak ovaries and cultured with different concentrations of recombinant human BMP6 in oocyte maturation medium. Following maturation, the metaphase II (MII) oocytes were used for somatic cell nuclear transfer (SCNT), and these were cultured in vitro. The development of blastocysts and cell numbers were detected on day 8. The apoptosis and histone modifications of yak cloned blastocysts were evaluated by detecting the expression of relevant genes and proteins (Bax, Bcl-2, H3K9ac, H3K18ac, and H3K9me3) using relative quantitative RT-PCR or immunofluorescence. The presence of 100 ng/mL BMP6 significantly enhanced the oocyte maturation ratios (66.12 ± 2.04% vs. 73.11 ± 1.38%), cleavage rates (69.40 ± 1.03% vs. 78.16 ± 0.93%), and blastocyst formation rates (20.63 ± 1.32% vs. 28.16 ± 1.67%) of cloned yak embryos. The total blastocysts (85.24 ± 3.12 vs. 103.36 ± 5.28), inner cell mass (ICM) cell numbers (19.59 ± 2.17 vs. 32.20 ± 2.61), and ratio of ICM to trophectoderm (TE) (22.93 ± 1.43% vs. 31.21 ± 1.62%) were also enhanced (p < 0.05). The ratio of the Bax to the Bcl-2 gene was lowest in the SCNT + BMP6 groups (p < 0.05). The H3K9ac and H3K18ac levels were increased in SCNT + BMP6 groups (p < 0.05), whereas the H3K9me3 level was decreased; the differences in blastocysts were not significant (p > 0.05). These study results demonstrate that addition of oocyte maturation medium with recombinant BMP6 enhances yak oocyte developmental potential and the subsequent developmental competence of SCNT embryos, and provides evidence that BMP6 is an important determinant of mammalian oocyte developmental reprogramming.
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Affiliation(s)
- Yangyang Pan
- 1 Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University , Lanzhou, China
| | - Honghong He
- 1 Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University , Lanzhou, China
| | - Yan Cui
- 1 Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University , Lanzhou, China
| | - Abdul Rasheed Baloch
- 2 University of South Bohemia in České Budějovice , Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Vodňany, Czech Republic
| | - Qin Li
- 1 Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University , Lanzhou, China
| | - Jiangfeng Fan
- 1 Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University , Lanzhou, China
| | - Junfeng He
- 1 Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University , Lanzhou, China
| | - Sijiu Yu
- 1 Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University , Lanzhou, China
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Su J, Wang Y, Xing X, Zhang L, Sun H, Zhang Y. Melatonin significantly improves the developmental competence of bovine somatic cell nuclear transfer embryos. J Pineal Res 2015; 59:455-68. [PMID: 26331949 DOI: 10.1111/jpi.12275] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 08/28/2015] [Indexed: 01/08/2023]
Abstract
Somatic cell nuclear transfer (SCNT) is a promising technology, but its application is hampered by its low efficiency. Hence, the majority of SCNT embryos fail to develop to term. In this study, the antioxidant melatonin reduced apoptosis and reactive oxygen species (ROS) in bovine SCNT embryos. It also increased cell number, inner cell mass (ICM) cell numbers, and the ratio of ICM to total cells while improving the development of bovine SCNT embryos in vitro and in vivo. Gene expression analysis showed that melatonin suppressed the expression of the pro-apoptotic genes p53 and Bax and stimulated the expression of the antioxidant genes SOD1 and Gpx4, the anti-apoptotic gene BCL2L1, and the pluripotency-related gene SOX2 in SCNT blastocysts. We also analyzed the epigenetic modifications in bovine in vitro fertilization, melatonin-treated, and untreated SCNT embryos. The global H3K9ac levels of melatonin-treated SCNT embryos at the four-cell stage were higher than those of the untreated SCNT embryos. We conclude that exogenous melatonin affects the expression of genes related to apoptosis, antioxidant function, and development. Moreover, melatonin reduced apoptosis and ROS in bovine SCNT embryos and enhanced blastocyst quality, thereby ultimately improving bovine cloning efficiency.
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Affiliation(s)
- Jianmin Su
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Yongsheng Wang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Xupeng Xing
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Lei Zhang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Hongzheng Sun
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
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