1
|
Regulation of CATSPER1 expression by the testis-determining gene SRY. PLoS One 2018; 13:e0205744. [PMID: 30379860 PMCID: PMC6209213 DOI: 10.1371/journal.pone.0205744] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 09/03/2018] [Indexed: 11/19/2022] Open
Abstract
CATSPER1 gene encodes a pore-forming and pH-sensing subunit of the CatSper Ca2+- permeable channel, a protein in the flagellum essential for sperm hyperactivation. Previous studies have shown that the murine Catsper1 gene promoter is regulated by different Sox proteins. Likewise, it is acknowledged that the human CATSPER1 gene promoter sequence is enriched in potential interaction sites for the sex-determining region Y gene (SRY), which suggest a novel regulatory transcriptional mechanism for CatSper1 channel expression. Therefore, in this work, we sought to determine whether the human CATSPER1 gene expression is regulated by the SRY transcription factor. To this end, a series of deletions and mutations were introduced in the wild- type CATSPER1 gene promoter to eliminate the SRY sites, and the different constructs were tested for their ability to activate transcription in human embryonic kidney and murine spermatogonial germ cell lines (HEK-293 and GC1-spg, respectively) using luciferase assays. In addition, by using a strategy that combines electrophoretic mobility shift assays (EMSA) and chromatin immunoprecipitation (ChIP) we investigated whether the CATSPER1 gene expression is regulated by the SRY transcription factor both in vitro and in vivo. Our results show that the transcriptional factor SRY specifically binds to different sites in the promoter sequence and has the ability to control CATSPER1 gene transcription.
Collapse
|
2
|
Shen XH, Jin YX, Liang S, Kwon JW, Zhu JW, Lei L, Kim NH. Autophagy is required for proper meiosis of porcine oocytes maturing in vitro. Sci Rep 2018; 8:12581. [PMID: 30135500 PMCID: PMC6105682 DOI: 10.1038/s41598-018-29872-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 07/03/2018] [Indexed: 01/08/2023] Open
Abstract
Autophagy is an essential cellular mechanism that degrades cytoplasmic proteins and organelles to recycle their components; however, the contribution of autophagy during meiosis has not been studied in porcine oocytes maturing in vitro. In this study, we observed that the autophagy-related gene, LC3, was expressed in porcine oocytes during maturation for 44 h in vitro. Knockdown of the autophagy-related gene, BECN1, reduced both BECN1 and LC3 protein expression levels. Moreover, BECN1 knockdown and treatment with the autophagy inhibitor, LY294002, during maturation of porcine oocytes in vitro impaired polar body extrusion, disturbed mitochondrial function, triggered the DNA damage response, and induced early apoptosis in porcine oocytes. Autophagy inhibition during oocyte maturation also impaired the further developmental potential of porcine oocytes. These results indicate that autophagy is required for the in vitro maturation of porcine oocytes.
Collapse
Affiliation(s)
- Xing-Hui Shen
- Department of Histology and Embryology, Harbin Medical University, Harbin, Heilongjiang, China.,Department of Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Yong-Xun Jin
- Department of Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea.,Department of Animal Science, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Shuang Liang
- Department of Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea.,Department of Animal Science, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Jeong-Woo Kwon
- Department of Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Ji-Wei Zhu
- Department of Forensic Medicine, Harbin Medical University, Harbin, Heilongjiang, China
| | - Lei Lei
- Department of Histology and Embryology, Harbin Medical University, Harbin, Heilongjiang, China.
| | - Nam-Hyung Kim
- Department of Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea. .,Department of Animal Science, College of Animal Sciences, Jilin University, Changchun, Jilin, China.
| |
Collapse
|
3
|
Pedersen HS, Callesen H, Løvendahl P, Chen F, Nyengaard JR, Nikolaisen NK, Holm P, Hyttel P. Ultrastructure and mitochondrial numbers in pre- and postpubertal pig oocytes. Reprod Fertil Dev 2017; 28:586-98. [PMID: 25482576 DOI: 10.1071/rd14220] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 08/19/2014] [Indexed: 11/23/2022] Open
Abstract
Prepubertal pig oocytes are associated with lower developmental competence. The aim of this experiment was to conduct an exhaustive survey of oocyte ultrastructure and to use a design-unbiased stereological approach to quantify the numerical density and total number of mitochondria in oocytes with different diameters from pre- and postpubertal pigs. The ultrastructure of smaller prepubertal immature oocytes indicated active cells in close contact with cumulus cells. The postpubertal oocytes were more quiescent cell types. The small prepubertal oocytes had a lower total mitochondrial number, but no differences were observed in mitochondrial densities between groups. Mature postpubertal oocytes adhered to the following characteristics: presence of metaphase II, lack of contact between cumulus cells and oocyte, absence of rough endoplasmic reticulum and Golgi complexes, peripheral location of cortical granules and central localisation of mitochondria, vesicles and lipid droplets. Prepubertal oocytes displayed more variation. The ultrastructure of large pre- and postpubertal oocytes was compatible with higher developmental competence, whereas that of smaller prepubertal oocytes could explain their reduced capacity. The higher number of mitochondria in large pre- and postpubertal oocytes could have an influence on oocyte competence, by increasing the pool of mitochondria available for early embryonic development.
Collapse
Affiliation(s)
| | - Henrik Callesen
- Department of Animal Science, Aarhus University, Blichers Allé 20, DK-8830 Tjele, Denmark
| | - Peter Løvendahl
- Department of Molecular Biology and Genetics, Aarhus University, Blichers Allé 20, DK-8830 Tjele, Denmark
| | - Fenghua Chen
- Stereology and Electron Microscopy Laboratory, Centre for Stochastic Geometry and Advanced Bioimaging, Aarhus University, Nørrebrogade 44, DK-8000 Aarhus C, Denmark
| | - Jens Randel Nyengaard
- Stereology and Electron Microscopy Laboratory, Centre for Stochastic Geometry and Advanced Bioimaging, Aarhus University, Nørrebrogade 44, DK-8000 Aarhus C, Denmark
| | - Nanett Kvist Nikolaisen
- Department of Veterinary Clinical and Animal Science, University of Copenhagen, Dyrlægevej 16, DK-1870 Frederiksberg C, Denmark
| | - Peter Holm
- Department of Veterinary Clinical and Animal Science, University of Copenhagen, Dyrlægevej 16, DK-1870 Frederiksberg C, Denmark
| | - Poul Hyttel
- Department of Veterinary Clinical and Animal Science, University of Copenhagen, Dyrlægevej 16, DK-1870 Frederiksberg C, Denmark
| |
Collapse
|
4
|
Lee W, Song K, Lee I, Shin H, Lee BC, Yeon S, Jang G. Cloned foal derived from in vivo matured horse oocytes aspirated by the short disposable needle system. J Vet Sci 2016; 16:509-16. [PMID: 26119166 PMCID: PMC4701744 DOI: 10.4142/jvs.2015.16.4.509] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/11/2015] [Accepted: 04/30/2015] [Indexed: 11/20/2022] Open
Abstract
Transvaginal ultrasound-guided follicle aspiration is one method of obtaining recipient oocytes for equine somatic cell nuclear transfer (SCNT). This study was conducted: (1) to evaluate the possibility of oocyte aspiration from pre-ovulatory follicles using a short disposable needle system (14-G) by comparing the oocyte recovery rate with that of a long double lumen needle (12-G); (2) to investigate the developmental competence of recovered oocytes after SCNT and embryo transfer. The recovery rates with the short disposable needle vs. the long needle were not significantly different (47.5% and 35.0%, respectively). Twenty-six SCNT embryos were transferred to 13 mares, and one mare delivered a live offspring at Day 342. There was a perfect identity match between the cloned foal and the cell donor after analysis of microsatellite DNA, and the mitochondrial DNA of the cloned foal was identical with that of the oocyte donor. These results demonstrated that the short disposable needle system can be used to recover oocytes to use as cytoplasts for SCNT, in the production of cloned foals and for other applications in equine embryology.
Collapse
Affiliation(s)
- Wonyou Lee
- Department of Theriogenology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Kilyoung Song
- Department of Theriogenology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Inhyung Lee
- Department of Surgery, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Hyungdo Shin
- Department of Life Science, Sogang University, Seoul 04107, Korea
| | - Byeong Chun Lee
- Department of Theriogenology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Seongchan Yeon
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Goo Jang
- Department of Theriogenology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea.,Emergence Center for Food-Medicine Personalized Therapy System, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 16229, Korea.,Farm Animal Clinical Training and Research Center, Institutes of GreenBio Science Technology, Seoul National University, Pyeongchang 25354, Korea
| |
Collapse
|
5
|
Lee J, Park JI, Yun JI, Lee Y, Yong H, Lee ST, Park CK, Hyun SH, Lee GS, Lee E. Rapamycin treatment during in vitro maturation of oocytes improves embryonic development after parthenogenesis and somatic cell nuclear transfer in pigs. J Vet Sci 2015; 16:373-80. [PMID: 25797293 PMCID: PMC4588024 DOI: 10.4142/jvs.2015.16.3.373] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 03/07/2015] [Indexed: 11/27/2022] Open
Abstract
This study was conducted to investigate the effects of rapamycin treatment during in vitro maturation (IVM) on oocyte maturation and embryonic development after parthenogenetic activation (PA) and somatic cell nuclear transfer (SCNT) in pigs. Morphologically good (MGCOCs) and poor oocytes (MPCOCs) were untreated or treated with 1 nM rapamycin during 0-22 h, 22-42 h, or 0-42 h of IVM. Rapamycin had no significant effects on nuclear maturation and blastocyst formation after PA of MGCOCs. Blastocyst formation after PA was significantly increased by rapamycin treatment during 22-42 h and 0-42 h (46.6% and 46.5%, respectively) relative to the control (33.3%) and 0-22 h groups (38.6%) in MPCOCs. In SCNT, blastocyst formation tended to increase in MPCOCs treated with rapamycin during 0-42 h of IVM relative to untreated oocytes (20.3% vs. 14.3%, 0.05 < p < 0.1), while no improvement was observed in MGCOCs. Gene expression analysis revealed that transcript abundance of Beclin 1 and microtubule-associated protein 1 light chain 3 mRNAs was significantly increased in MPCOCs by rapamycin relative to the control. Our results demonstrated that autophagy induction by rapamycin during IVM improved developmental competence of oocytes derived from MPCOCs.
Collapse
Affiliation(s)
- Joohyeong Lee
- College of Veterinary Medicine, Kangwon National University, Chuncheon 200-701, Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Pedersen HS, Liu Y, Li R, Purup S, Løvendahl P, Holm P, Hyttel P, Callesen H. Selection of pre- versus postpubertal pig oocytes for parthenogenetic activation and somatic cell nuclear transfer. Reprod Fertil Dev 2015; 27:544-50. [DOI: 10.1071/rd13283] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 01/10/2014] [Indexed: 11/23/2022] Open
Abstract
Pig oocytes have been used increasingly for in vitro production techniques in recent years. The slaughterhouse-derived oocytes that are often used are mostly of prepubertal origin. The aims of the present study were to compare the developmental competence between pre- and postpubertal pig oocytes, and to develop a simple and practical method for the selection of prepubertal pig oocytes for parthenogenetic activation (PA) and somatic cell nuclear transfer (SCNT) based on oocyte morphology after IVM and oocyte inside zona pellucida (ZP) diameter (‘small’ ≤110 µm; ‘medium’ >110 µm; ‘large’ ≥120 µm). Meiotic competence and blastocyst rates after PA and SCNT of prepubertal oocytes increased with oocyte size, with the large prepubertal oocytes reaching a level similar to postpubertal oocytes after SCNT. Blastocyst cell number was not related to oocyte inside ZP diameter and oocyte donor to the same extent as blastocyst rate. Very low blastocyst rates were obtained after PA of morphologically bad pre- and postpubertal oocytes. In conclusion, measurement of inside ZP diameter combined with morphological selection is useful to remove incompetent oocytes. Further studies are needed to clarify the relative importance of cytoplasmic volume and stage in oocyte growth phase.
Collapse
|
7
|
Li Z, He X, Chen L, Shi J, Zhou R, Xu W, Liu D, Wu Z. Bone marrow mesenchymal stem cells are an attractive donor cell type for production of cloned pigs as well as genetically modified cloned pigs by somatic cell nuclear transfer. Cell Reprogram 2013; 15:459-70. [PMID: 24033142 DOI: 10.1089/cell.2013.0010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The somatic cell nuclear transfer (SCNT) technique has been widely applied to clone pigs or to produce genetically modified pigs. Currently, this technique relies mainly on using terminally differentiated fibroblasts as donor cells. To improve cloning efficiency, only partially differentiated multipotent mesenchymal stem cells (MSCs), thought to be more easily reprogrammed to a pluripotent state, have been used as nuclear donors in pig SCNT. Although in vitro-cultured embryos cloned from porcine MSCs (MSCs-embryos) were shown to have higher preimplantation developmental ability than cloned embryos reconstructed from fibroblasts (Fs-embryos), the difference in in vivo full-term developmental rate between porcine MSCs-embryos and Fs-embryos has not been investigated so far. In this study, we demonstrated that blastocyst total cell number and full-term survival abilities of MSCs-embryos were significantly higher than those of Fs-embryos cloned from the same donor pig. The enhanced developmental potential of MSCs-embryos may be associated with their nuclear donors' DNA methylation profile, because we found that the methylation level of imprinting genes and repeat sequences differed between MSCs and fibroblasts. In addition, we showed that use of transgenic porcine MSCs generated from transgene plasmid transfection as donor cells for SCNT can produce live transgenic cloned pigs. These results strongly suggest that porcine bone marrow MSCs are a desirable donor cell type for production of cloned pigs and genetically modified cloned pigs via SCNT.
Collapse
Affiliation(s)
- Zicong Li
- 1 Department of Animal Genetics, Breeding and Reproduction, South China Agricultural University , Guangzhou, Guangdong, P. R. China, 510642
| | | | | | | | | | | | | | | |
Collapse
|