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Orzechowska M, Anusewicz D, Bednarek AK. Functional Gene Expression Differentiation of the Notch Signaling Pathway in Female Reproductive Tract Tissues-A Comprehensive Review With Analysis. Front Cell Dev Biol 2021; 8:592616. [PMID: 33384996 PMCID: PMC7770115 DOI: 10.3389/fcell.2020.592616] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 11/11/2020] [Indexed: 12/13/2022] Open
Abstract
The Notch pathway involves evolutionarily conserved signaling regulating the development of the female tract organs such as breast, ovary, cervix, and uterine endometrium. A great number of studies revealed Notch aberrancies in association with their carcinogenesis and disease progression, the management of which is still challenging. The present study is a comprehensive review of the available literature on Notch signaling during the normal development and carcinogenesis of the female tract organs. The review has been enriched with our analyses of the TCGA data including breast, cervical, ovarian, and endometrial carcinomas concerning the effects of Notch signaling at two levels: the core components and downstream effectors, hence filling the lack of global overview of Notch-driven carcinogenesis and disease progression. Phenotype heterogeneity regarding Notch signaling was projected in two uniform manifold approximation and projection algorithm dimensions, preceded by the principal component analysis step reducing the data burden. Additionally, overall and disease-free survival analyses were performed with the optimal cutpoint determination by Evaluate Cutpoints software to establish the character of particular Notch components in tumorigenesis. In addition to the review, we demonstrated separate models of the examined cancers of the Notch pathway and its targets, although expression profiles of all normal tissues were much more similar to each other than to its cancerous compartments. Such Notch-driven cancerous differentiation resulted in a case of opposite association with DFS and OS. As a consequence, target genes also show very distinct profiles including genes associated with cell proliferation and differentiation, energy metabolism, or the EMT. In conclusion, the observed Notch associations with the female tract malignancies resulted from differential expression of target genes. This may influence a future analysis to search for new therapeutic targets based on specific Notch pathway profiles.
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Affiliation(s)
| | - Dorota Anusewicz
- Department of Molecular Carcinogenesis, Medical University of Lodz, Lodz, Poland
| | - Andrzej K Bednarek
- Department of Molecular Carcinogenesis, Medical University of Lodz, Lodz, Poland
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2
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Hubbard N, Prasasya RD, Mayo KE. Activation of Notch Signaling by Oocytes and Jag1 in Mouse Ovarian Granulosa Cells. Endocrinology 2019; 160:2863-2876. [PMID: 31609444 PMCID: PMC6850001 DOI: 10.1210/en.2019-00564] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/04/2019] [Indexed: 12/15/2022]
Abstract
The Notch pathway plays diverse and complex roles in cell signaling during development. In the mammalian ovary, Notch is important for the initial formation and growth of follicles, and for regulating the proliferation and differentiation of follicular granulosa cells during the periovulatory period. This study seeks to determine the contribution of female germ cells toward the initial activation and subsequent maintenance of Notch signaling within somatic granulosa cells of the ovary. To address this issue, transgenic Notch reporter (TNR) mice were crossed with Sohlh1-mCherry (S1CF) transgenic mice to visualize Notch-active cells (EGFP) and germ cells (mCherry) simultaneously in the neonatal ovary. To test the involvement of oocytes in activation of Notch signaling in ovarian somatic cells, we ablated germ cells using busulfan, a chemotherapeutic alkylating agent, or investigated KitWv/Wv (viable dominant white-spotting) mice that lack most germ cells. The data reveal that Notch pathway activation in granulosa cells is significantly suppressed when germ cells are reduced. We further demonstrate that disruption of the gene for the Notch ligand Jag1 in oocytes similarly impacts Notch activation and that recombinant JAG1 enhances Notch target gene expression in granulosa cells. These data are consistent with the hypothesis that germ cells provide a ligand, such as Jag1, that is necessary for activation of Notch signaling in the developing ovary.
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Affiliation(s)
- Nisan Hubbard
- Department of Molecular Biosciences, Center for Reproductive Science, Northwestern University, Evanston, Illinois
| | - Rexxi D Prasasya
- Department of Molecular Biosciences, Center for Reproductive Science, Northwestern University, Evanston, Illinois
| | - Kelly E Mayo
- Department of Molecular Biosciences, Center for Reproductive Science, Northwestern University, Evanston, Illinois
- Correspondence: Kelly E. Mayo, PhD, Department of Molecular Biosciences, Center for Reproductive Science, Northwestern University, 1115 Pancoe Pavilion, Evanston, Illinois 60208. E-mail:
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3
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Wang LQ, Liu JC, Chen CL, Cheng SF, Sun XF, Zhao Y, Yin S, Hou ZM, Pan B, Ding C, Shen W, Zhang XF. Regulation of primordial follicle recruitment by cross-talk between the Notch and phosphatase and tensin homologue (PTEN)/AKT pathways. Reprod Fertil Dev 2017; 28:700-12. [PMID: 25344626 DOI: 10.1071/rd14212] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 09/11/2014] [Indexed: 12/22/2022] Open
Abstract
The growth of oocytes and the development of follicles require certain pathways involved in cell proliferation and survival, such as the phosphatidylinositol 3-kinase (PI3K) pathway and the Notch signalling pathway. The aim of the present study was to investigate the interaction between Notch and the PI3K/AKT signalling pathways and their effects on primordial follicle recruitment. When the Notch pathway was inhibited by L-685,458 or N-[N-(3,5-difluorophenacetyl)-l-alanyl]-S-phenylglycinet-butyl ester (DAPT) in vitro, the expression of genes in the pathway and the percentage of oocytes in growing follicles decreased significantly in mouse ovaries. By 2 days postpartum, ovaries exposed to DAPT, short interference (si) RNA against Notch1 or siRNA against Hairy and enhancer of split-1 (Hes1) had significantly decreased expression of HES1, the target protein of the Notch signalling pathway. In contrast, expression of phosphatase and tensin homologue (Pten), a negative regulator of the AKT signalling pathway, was increased significantly. Co immunoprecipitation (Co-IP) revealed an interaction between HES1 and PTEN. In addition, inhibition of the Notch signalling pathway suppressed AKT phosphorylation and the proliferation of granulosa cells. In conclusion, the recruitment of primordial follicles was affected by the proliferation of granulosa cells and regulation of the interaction between the Notch and PI3K/AKT signalling pathways.
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Affiliation(s)
- Lin-Qing Wang
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Jing-Cai Liu
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Chun-Lei Chen
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Shun-Feng Cheng
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Xiao-Feng Sun
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Yong Zhao
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Shen Yin
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Zhu-Mei Hou
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Bo Pan
- Department of Animal and Poultry Science, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Cheng Ding
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Wei Shen
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
| | - Xi-Feng Zhang
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao 266109, China
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4
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Vanorny DA, Mayo KE. The role of Notch signaling in the mammalian ovary. Reproduction 2017; 153:R187-R204. [PMID: 28283672 DOI: 10.1530/rep-16-0689] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/03/2017] [Accepted: 03/09/2017] [Indexed: 12/21/2022]
Abstract
The Notch pathway is a contact-dependent, or juxtacrine, signaling system that is conserved in metazoan organisms and is important in many developmental processes. Recent investigations have demonstrated that the Notch pathway is active in both the embryonic and postnatal ovary and plays important roles in events including follicle assembly and growth, meiotic maturation, ovarian vasculogenesis and steroid hormone production. In mice, disruption of the Notch pathway results in ovarian pathologies affecting meiotic spindle assembly, follicle histogenesis, granulosa cell proliferation and survival, corpora luteal function and ovarian neovascularization. These aberrations result in abnormal folliculogenesis and reduced fertility. The knowledge of the cellular interactions facilitated by the Notch pathway is an important area for continuing research, and future studies are expected to enhance our understanding of ovarian function and provide critical insights for improving reproductive health. This review focuses on the expression of Notch pathway components in the ovary, and on the multiple functions of Notch signaling in follicle assembly, maturation and development. We focus on the mouse, where genetic investigations are possible, and relate this information to the human ovary.
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Affiliation(s)
- Dallas A Vanorny
- Department of Molecular Biosciences and Center for Reproductive ScienceNorthwestern University, Evanston, Illinois, USA
| | - Kelly E Mayo
- Department of Molecular Biosciences and Center for Reproductive ScienceNorthwestern University, Evanston, Illinois, USA
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Guo M, Zhang C, Wang Y, Feng L, Wang Z, Niu W, Du X, Tang W, Li Y, Wang C, Chen Z. Progesterone Receptor Membrane Component 1 Mediates Progesterone-Induced Suppression of Oocyte Meiotic Prophase I and Primordial Folliculogenesis. Sci Rep 2016; 6:36869. [PMID: 27848973 PMCID: PMC5111101 DOI: 10.1038/srep36869] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 10/21/2016] [Indexed: 12/18/2022] Open
Abstract
Well-timed progression of primordial folliculogenesis is essential for mammalian female fertility. Progesterone (P4) inhibits primordial follicle formation under physiological conditions; however, P4 receptor that mediates this effect and its underlying mechanisms are unclear. In this study, we used an in vitro organ culture system to show that progesterone receptor membrane component 1 (PGRMC1) mediated P4-induced inhibition of oocyte meiotic prophase I and primordial follicle formation. We found that membrane-impermeable BSA-conjugated P4 inhibited primordial follicle formation similar to that by P4. Interestingly, PGRMC1 and its partner serpine1 mRNA-binding protein 1 were highly expressed in oocytes in perinatal ovaries. Inhibition or RNA interference of PGRMC1 abolished the suppressive effect of P4 on follicle formation. Furthermore, P4-PGRMC1 interaction blocked oocyte meiotic progression and decreased intra-oocyte cyclic AMP (cAMP) levels in perinatal ovaries. cAMP analog dibutyryl cAMP reversed P4–PGRMC1 interaction-induced inhibition of meiotic progression and follicle formation. Thus, our results indicated that PGRMC1 mediated P4-induced suppression of oocyte meiotic progression and primordial folliculogenesis by decreasing intra-oocyte cAMP levels.
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Affiliation(s)
- Meng Guo
- Department of Laboratory Animal Science, School of Basic Medical Science, Capital Medical University, Beijing 100069, Peoples' Republic of China
| | - Cheng Zhang
- College of Life Science, Capital Normal University, Beijing 100048, People's Republic of China
| | - Yan Wang
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Science, Capital Medical University, Beijing 100069, Peoples' Republic of China
| | - Lizhao Feng
- State Key Laboratory for Agro-Biotechnology, College of Biological Science, China Agricultural University, Beijing 100193, Peoples' Republic of China
| | - Zhengpin Wang
- Laboratory of Cellular and Development Biology, NIDDK, National Institutes of Health, Bethesda MD 20892, USA
| | - Wanbo Niu
- State Key Laboratory for Agro-Biotechnology, College of Biological Science, China Agricultural University, Beijing 100193, Peoples' Republic of China
| | - Xiaoyan Du
- Department of Laboratory Animal Science, School of Basic Medical Science, Capital Medical University, Beijing 100069, Peoples' Republic of China
| | - Wang Tang
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Science, Capital Medical University, Beijing 100069, Peoples' Republic of China
| | - Yuna Li
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Science, Capital Medical University, Beijing 100069, Peoples' Republic of China
| | - Chao Wang
- State Key Laboratory for Agro-Biotechnology, College of Biological Science, China Agricultural University, Beijing 100193, Peoples' Republic of China
| | - Zhenwen Chen
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Science, Capital Medical University, Beijing 100069, Peoples' Republic of China
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6
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Zhao L, Du X, Huang K, Zhang T, Teng Z, Niu W, Wang C, Xia G. Rac1 modulates the formation of primordial follicles by facilitating STAT3-directed Jagged1, GDF9 and BMP15 transcription in mice. Sci Rep 2016; 6:23972. [PMID: 27050391 PMCID: PMC4822123 DOI: 10.1038/srep23972] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/01/2016] [Indexed: 11/17/2022] Open
Abstract
The size of the primordial follicle pool determines the reproductive potential of mammalian females, and establishment of the pool is highly dependent on specific genes expression. However, the molecular mechanisms by which the essential genes are regulated coordinately to ensure primordial follicle assembly remain a mystery. Here, we show that the small GTPase Rac1 plays an indispensable role in controlling the formation of primordial follicles in mouse ovary. Employing fetal mouse ovary organ culture system, we demonstrate that disruption of Rac1 retarded the breakdown of germline cell cysts while Rac1 overexpression accelerated the formation of primordial follicles. In addition, in vivo inhibitor injection resulted in the formation of multi-oocyte follicles. Subsequent investigation showed that Rac1 induced nuclear import of STAT3 by physical binding. In turn, nuclear STAT3 directly activated the transcription of essential oocyte-specific genes, including Jagged1, GDF9, BMP15 and Nobox. Further, GDF9 and BMP15 regulated the translation of Notch2 via mTORC1 activation in pregranulosa cells. Overexression or addition of Jagged1, GDF9 and BMP15 not only reversed the effect of Rac1 disruption, but also accelerated primordial follicle formation via Notch2 signaling activation. Collectively, these results indicate that Rac1 plays important roles as a key regulator in follicular assembly.
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Affiliation(s)
- Lihua Zhao
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xinhua Du
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Kun Huang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Tuo Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Zhen Teng
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Wanbao Niu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Chao Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Guoliang Xia
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
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7
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Teng Z, Wang C, Wang Y, Huang K, Xiang X, Niu W, Feng L, Zhao L, Yan H, Zhang H. Gap junctions are essential for murine primordial follicle assembly immediately before birth. Reproduction 2016; 151:105-15. [PMID: 26554027 DOI: 10.1530/rep-15-0282] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/09/2015] [Indexed: 12/16/2023]
Abstract
The reserve of primordial follicles determines the reproductive ability of the female mammal over its reproductive life. The primordial follicle is composed of two types of cells: oocytes and surrounding pre-granulosa cells. However, the underlying mechanism regulating primordial follicle assembly is largely undefined. In this study, we found that gap junction communication (GJC) established between the ovarian cells in the perinatal mouse ovary may be involved in the process. First, gap junction structures between the oocyte and surrounding pre-granulosa cells appear at about 19.0 dpc (days post coitum). As many as 12 gap junction-related genes are upregulated at birth, implying that a complex communication may exist between ovarian cells, because specifically silencing the genes of individual gap junction proteins, such as Gja1, Gja4 or both, has no influence on primordial follicle assembly. On the other hand, non-specific blockers of GJC, such as carbenoxolone (CBX) and 18α-glycyrrhetinic acid (AGA), significantly inhibit mouse primordial follicle assembly. We proved that the temporal window for establishment of GJC in the fetal ovary is from 19.5 dpc to 1 dpp (days postpartum). In addition, the expression of ovarian somatic cell (OSC)-specific genes, such as Notch2, Foxl2 and Irx3, was negatively affected by GJC blockers, whereas oocyte-related genes, such as Ybx2, Nobox and Sohlh1, were hardly affected, implying that the establishment of GJC during this period may be more important to OSCs than to oocytes. In summary, our results indicated that GJC involves in the mouse primordial follicle assembly process at a specific temporal window that needs Notch signaling cross-talking.
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Affiliation(s)
- Zhen Teng
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Chao Wang
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Yijing Wang
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Kun Huang
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Xi Xiang
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Wanbao Niu
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Lizhao Feng
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Lihua Zhao
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Hao Yan
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
| | - Hua Zhang
- State Key Laboratory of Agro-BiotechnologyCollege of Biological Science, China Agricultural University, Beijing 100193, China
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Mu X, Liao X, Chen X, Li Y, Wang M, Shen C, Zhang X, Wang Y, Liu X, He J. DEHP exposure impairs mouse oocyte cyst breakdown and primordial follicle assembly through estrogen receptor-dependent and independent mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2015; 298:232-240. [PMID: 26073378 DOI: 10.1016/j.jhazmat.2015.05.052] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 05/28/2015] [Accepted: 05/29/2015] [Indexed: 06/04/2023]
Abstract
Estrogen plays an essential role in the development of mammalian oocytes, and recent studies suggest that it also regulates primordial follicle assembly in the neonatal ovaries. During the last decade, potential exposure of humans and animals to estrogen-like endocrine disrupting chemicals has become a growing concern. In the present study, we focused on the effect of diethylhexyl phthalate (DEHP), a widespread plasticizer with estrogen-like activity, on germ-cell cyst breakdown and primordial follicle assembly in the early ovarian development of mouse. Neonatal mice injected with DEHP displayed impaired cyst breakdown. Using ovary organ cultures, we revealed that impairment was mediated through estrogen receptors (ERs), as ICI 182,780, an efficient antagonist of ER, reversed this DEHP-mediated effect. DEHP exposure reduced the expression of ERβ, progesterone receptor (PR), and Notch2 signaling components. Finally, DEHP reduced proliferation of pregranulosa precursor cells during the process of primordial folliculogenesis. Together, our results indicate that DEHP influences oocyte cyst breakdown and primordial follicle formation through several mechanisms. Therefore, exposure to estrogen-like chemicals during fetal or neonatal development may adversely influence early ovarian development.
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Affiliation(s)
- Xinyi Mu
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China; Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, Chongqing 400016, PR China
| | - Xinggui Liao
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China
| | - Xuemei Chen
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China
| | - Yanli Li
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China
| | - Meirong Wang
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China
| | - Cha Shen
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China
| | - Xue Zhang
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China
| | - Yingxiong Wang
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China
| | - Xueqing Liu
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China
| | - Junlin He
- Laboratory of Reproductive Biology, Chongqing Medical University, Chongqing 400016, PR China.
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Li J, Zhao D, Guo C, Li J, Mi Y, Zhang C. Involvement of Notch signaling in early chick ovarian follicle development. Cell Biol Int 2015; 40:65-73. [DOI: 10.1002/cbin.10538] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 08/15/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Jun Li
- Department of Veterinary Medicine, College of Animal Sciences; Zhejiang University; No. 866 Yuhangtang Road Hangzhou 310058 People's Republic of China
| | - Dan Zhao
- Department of Veterinary Medicine, College of Animal Sciences; Zhejiang University; No. 866 Yuhangtang Road Hangzhou 310058 People's Republic of China
| | - Changquan Guo
- Department of Veterinary Medicine, College of Animal Sciences; Zhejiang University; No. 866 Yuhangtang Road Hangzhou 310058 People's Republic of China
| | - Jian Li
- Department of Veterinary Medicine, College of Animal Sciences; Zhejiang University; No. 866 Yuhangtang Road Hangzhou 310058 People's Republic of China
| | - Yuling Mi
- Department of Veterinary Medicine, College of Animal Sciences; Zhejiang University; No. 866 Yuhangtang Road Hangzhou 310058 People's Republic of China
| | - Caiqiao Zhang
- Department of Veterinary Medicine, College of Animal Sciences; Zhejiang University; No. 866 Yuhangtang Road Hangzhou 310058 People's Republic of China
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Wang Z, Niu W, Wang Y, Teng Z, Wen J, Xia G, Wang C. Follistatin288 Regulates Germ Cell Cyst Breakdown and Primordial Follicle Assembly in the Mouse Ovary. PLoS One 2015; 10:e0129643. [PMID: 26076381 PMCID: PMC4468113 DOI: 10.1371/journal.pone.0129643] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 05/11/2015] [Indexed: 11/18/2022] Open
Abstract
In mammals, the primordial follicle pool represents the entire reproductive potential of a female. The transforming growth factor-β (TGF-β) family member activin (ACT) contributes to folliculogenesis, although the exact mechanism is not known. The role of FST288, the strongest ACT-neutralizing isoform of follistatin (FST), during cyst breakdown and primordial follicle formation in the fetal mice ovary was assessed using an in vitro culture system. FST was continuously expressed in the oocytes as well as the cuboidal granulosa cells of growing follicles in perinatal mouse ovaries. Treatment with FST288 delayed germ cell nest breakdown, particularly near the periphery of the ovary, and dramatically decreased the percentage of primordial follicles. In addition, there was a dramatic decrease in proliferation of granulosa cells and somatic cell expression of Notch signaling was impaired. In conclusion, FST288 impacts germ cell nest breakdown and primordial follicle assembly by inhibiting somatic cell proliferation.
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Affiliation(s)
- Zhengpin Wang
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, People’s Republic of China
| | - Wanbao Niu
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, People’s Republic of China
| | - Yijing Wang
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, People’s Republic of China
| | - Zhen Teng
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, People’s Republic of China
| | - Jia Wen
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, People’s Republic of China
| | - Guoliang Xia
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, People’s Republic of China
| | - Chao Wang
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, People’s Republic of China
- * E-mail:
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11
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Wang Y, Teng Z, Li G, Mu X, Wang Z, Feng L, Niu W, Huang K, Xiang X, Wang C, Zhang H, Xia G. Cyclic AMP in oocytes controls meiotic prophase I and primordial folliculogenesis in the perinatal mouse ovary. Development 2014; 142:343-51. [PMID: 25503411 DOI: 10.1242/dev.112755] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In mammalian ovaries, a fixed population of primordial follicles forms during the perinatal stage and the oocytes contained within are arrested at the dictyate stage of meiotic prophase I. In the current study, we provide evidence that the level of cyclic AMP (cAMP) in oocytes regulates oocyte meiotic prophase I and primordial folliculogenesis in the perinatal mouse ovary. Our results show that the early meiotic development of oocytes is closely correlated with increased levels of intra-oocyte cAMP. Inhibiting cAMP synthesis in fetal ovaries delayed oocyte meiotic progression and inhibited the disassembly and degradation of synaptonemal complex protein 1. In addition, inhibiting cAMP synthesis in in vitro cultured fetal ovaries prevented primordial follicle formation. Finally, using an in situ oocyte chromosome analysis approach, we found that the dictyate arrest of oocytes is essential for primordial follicle formation under physiological conditions. Taken together, these results suggest a role for cAMP in early meiotic development and primordial follicle formation in the mouse ovary.
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Affiliation(s)
- Yijing Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
| | - Zhen Teng
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
| | - Ge Li
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510663, China
| | - Xinyi Mu
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China Department of Histology and Embryology, Chongqing Medical University, Chongqing 400016, China
| | - Zhengpin Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
| | - Lizhao Feng
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
| | - Wanbao Niu
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
| | - Kun Huang
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
| | - Xi Xiang
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
| | - Chao Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
| | - Hua Zhang
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg SE-405 30, Sweden
| | - Guoliang Xia
- State Key Laboratory of Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100193, China
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Vanorny DA, Prasasya RD, Chalpe AJ, Kilen SM, Mayo KE. Notch signaling regulates ovarian follicle formation and coordinates follicular growth. Mol Endocrinol 2014; 28:499-511. [PMID: 24552588 DOI: 10.1210/me.2013-1288] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Ovarian follicles form through a process in which somatic pregranulosa cells encapsulate individual germ cells from germ cell syncytia. Complementary expression of the Notch ligand, Jagged1, in germ cells and the Notch receptor, Notch2, in pregranulosa cells suggests a role for Notch signaling in mediating cellular interactions during follicle assembly. Using a Notch reporter mouse, we demonstrate that Notch signaling is active within somatic cells of the embryonic ovary, and these cells undergo dramatic reorganization during follicle histogenesis. This coincides with a significant increase in the expression of the ligands, Jagged1 and Jagged2; the receptor, Notch2; and the target genes, Hes1 and Hey2. Histological examination of ovaries from mice with conditional deletion of Jagged1 within germ cells (J1 knockout [J1KO]) or Notch2 within granulosa cells (N2 knockout [N2KO]) reveals changes in follicle dynamics, including perturbations in the primordial follicle pool and antral follicle development. J1KO and N2KO ovaries also contain multi-oocytic follicles, which represent a failure to resolve germ cell syncytia, and follicles with enlarged oocytes but lacking somatic cell growth, signifying a potential role of Notch signaling in follicle activation and the coordination of follicle development. We also observed decreased cell proliferation and increased apoptosis in the somatic cells of both conditional knockout lines. As a consequence of these defects, J1KO female mice are subfertile; however, N2KO female mice remain fertile. This study demonstrates important functions for Jagged1 and Notch2 in the resolution of germ cell syncytia and the coordination of somatic and germ cell growth within follicles of the mouse ovary.
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Affiliation(s)
- Dallas A Vanorny
- Department of Molecular Biosciences and Center for Reproductive Science, Northwestern University, Evanston, Illinois 60208
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Feng YM, Liang GJ, Pan B, Qin XS, Zhang XF, Chen CL, Li L, Cheng SF, De Felici M, Shen W. Notch pathway regulates female germ cell meiosis progression and early oogenesis events in fetal mouse. Cell Cycle 2014; 13:782-91. [PMID: 24398584 DOI: 10.4161/cc.27708] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A critical process of early oogenesis is the entry of mitotic oogonia into meiosis, a cell cycle switch regulated by a complex gene regulatory network. Although Notch pathway is involved in numerous important aspects of oogenesis in invertebrate species, whether it plays roles in early oogenesis events in mammals is unknown. Therefore, the rationale of the present study was to investigate the roles of Notch signaling in crucial processes of early oogenesis, such as meiosis entry and early oocyte growth. Notch receptors and ligands were localized in mouse embryonic female gonads and 2 Notch inhibitors, namely DAPT and L-685,458, were used to attenuate its signaling in an in vitro culture system of ovarian tissues from 12.5 days post coitum (dpc) fetus. The results demonstrated that the expression of Stra8, a master gene for germ cell meiosis, and its stimulation by retinoic acid (RA) were reduced after suppression of Notch signaling, and the other meiotic genes, Dazl, Dmc1, and Rec8, were abolished or markedly decreased. Furthermore, RNAi of Notch1 also markedly inhibited the expression of Stra8 and SCP3 in cultured female germ cells. The increased methylation status of CpG islands within the Stra8 promoter of the oocytes was observed in the presence of DAPT, indicating that Notch signaling is probably necessary for maintaining the epigenetic state of this gene in a way suitable for RA stimulation. Furthermore, in the presence of Notch inhibitors, progression of oocytes through meiosis I was markedly delayed. At later culture periods, the rate of oocyte growth was decreased, which impaired subsequent primordial follicle assembly in cultured ovarian tissues. Taken together, these results suggested new roles of the Notch signaling pathway in female germ cell meiosis progression and early oogenesis events in mammals.
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Affiliation(s)
- Yan-Min Feng
- Laboratory of Germ Cell Biology; Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong; College of Animal Science and Technology; Qingdao Agricultural University; Qingdao, China
| | - Gui-Jin Liang
- Laboratory of Germ Cell Biology; Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong; College of Animal Science and Technology; Qingdao Agricultural University; Qingdao, China
| | - Bo Pan
- Department of Animal and Poultry Science; University of Guelph; Guelph, Ontario, Canada
| | - Xun-Si Qin
- Laboratory of Germ Cell Biology; Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong; College of Animal Science and Technology; Qingdao Agricultural University; Qingdao, China
| | - Xi-Feng Zhang
- College of Biological and Pharmaceutical Engineering; Wuhan Polytechnic University; Wuhan, China
| | - Chun-Lei Chen
- Laboratory of Germ Cell Biology; Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong; College of Animal Science and Technology; Qingdao Agricultural University; Qingdao, China
| | - Lan Li
- Laboratory of Germ Cell Biology; Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong; College of Animal Science and Technology; Qingdao Agricultural University; Qingdao, China
| | - Shun-Feng Cheng
- Laboratory of Germ Cell Biology; Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong; College of Animal Science and Technology; Qingdao Agricultural University; Qingdao, China
| | - Massimo De Felici
- Department of Biomedicine and Prevention; University of Rome "Tor Vergata"; Rome, Italy
| | - Wei Shen
- Laboratory of Germ Cell Biology; Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong; College of Animal Science and Technology; Qingdao Agricultural University; Qingdao, China
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Abstract
During oogenesis in mammals, the germ line interacts with ovarian somatic cells as follicles assemble, grow, ovulate, and die. As a result, these interactions with granulosa cells determine germ cell fate as the oocyte undergoes hypertrophy, the final stages of meiosis, and preparations required for successful fertilization. Over the past 15 years, investigators using a range of experimental approaches have uncovered the existence of multiple modalities for signaling between the oocyte and companion granulosa cells that play essential and sometimes overlapping roles during the growth and maturative phases of oogenesis. Five modalities of intercellular signaling are considered in the context of regulating oocyte gene expression, metabolism, spatial patterning, and the cell cycle. While some forms of signaling predominate at specific stages of oogenesis, such as during the assembly of primordial follicles, it is apparent that combinations of modalities work in concert to control events associated with ovulation when both nuclear and cytoplasmic maturation occur. A final key feature of the signaling platform underscoring the protracted process of oogenesis is the existence of negative and positive feedback loops designed to coordinate the tempo of oogenesis and folliculogenesis at key developmental transitions.
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Affiliation(s)
- Lynda K McGinnis
- Department of Molecular and Integrative Physiology, Kansas University Medical Center, Kansas City, Missouri, USA
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