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Zhang J, Liu W, Sun X, Kong F, Zhu Y, Lei Y, Su Y, Su Y, Li J. Inhibition of mTOR Signaling Pathway Delays Follicle Formation in Mice. J Cell Physiol 2016; 232:585-595. [PMID: 27301841 DOI: 10.1002/jcp.25456] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 06/13/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Jing Zhang
- State Key Laboratory of Reproductive Medicine; Nanjing Medical University; Nanjing China
| | - Wenwen Liu
- State Key Laboratory of Reproductive Medicine; Nanjing Medical University; Nanjing China
| | - Xinhui Sun
- State Key Laboratory of Reproductive Medicine; Nanjing Medical University; Nanjing China
| | - Feifei Kong
- State Key Laboratory of Reproductive Medicine; Nanjing Medical University; Nanjing China
| | - Ye Zhu
- Department of Gynecology; Nanjing Maternal and Child Health Hospital; Nanjing Medical University; Nanjing China
| | - Yue Lei
- Department of Gynecology; Nanjing Maternal and Child Health Hospital; Nanjing Medical University; Nanjing China
| | - Youqiang Su
- State Key Laboratory of Reproductive Medicine; Nanjing Medical University; Nanjing China
| | - Yiping Su
- Department of Gynecology; Nanjing Maternal and Child Health Hospital; Nanjing Medical University; Nanjing China
| | - Jing Li
- State Key Laboratory of Reproductive Medicine; Nanjing Medical University; Nanjing China
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Monniaux D. Driving folliculogenesis by the oocyte-somatic cell dialog: Lessons from genetic models. Theriogenology 2016; 86:41-53. [PMID: 27155734 DOI: 10.1016/j.theriogenology.2016.04.017] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 12/09/2015] [Accepted: 03/14/2016] [Indexed: 12/12/2022]
Abstract
This review focuses on the role of the dialog between the oocyte and its companion somatic cells in driving folliculogenesis from the primordial to the preovulatory follicle stage. Mouse and sheep genetic models have brought complementary evidence of these cell interactions and their consequences for ovarian function. In mouse, the deletion of genes encoding connexins has shown that functional gap junction channels between oocytes and granulosa cells and between granulosa cells themselves maintain the follicle in a functionally integrated state. Targeted deletions in oocytes or granulosa cells have revealed the cell- and stage-specific role of ubiquist factors belonging to the phosphatidylinositol 3 kinase signaling pathway in primordial follicle activation, oocyte growth and follicle survival. Various models of transgenic mice and sheep carrying natural loss-of-function mutations associated with sterility have established that the oocyte-derived factors, bone morphogenetic protein (BMP) 15 and growth differentiation factor 9 orchestrate follicle development, support cumulus metabolism and maturation and participate in oocyte meiosis arrest. Unexpectedly in sheep, mutations resulting in the attenuation of BMP signaling lead to enhanced ovulation rate, likely resulting from a lowered follicular atresia rate and the enhancement of FSH-regulated follicular maturation. Both the activation level of BMP signaling and an adequate equilibrium between BMP15 and growth differentiation factor 9 determine follicle survival, maturation, and development toward ovulation. The physiological approaches which were implemented on genetic animal models during the last 20 years have opened up new perspectives for female fertility by identifying the main signaling pathways of the oocyte-somatic cell dialog.
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Affiliation(s)
- Danielle Monniaux
- INRA, UMR85 Physiologie de la Reproduction et des Comportements, Nouzilly, France; CNRS, UMR7247, Nouzilly, France; Université François Rabelais de Tours, Tours, France; IFCE, Nouzilly, France.
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Zhen X, Wu B, Wang J, Lu C, Gao H, Qiao J. Increased Incidence of Mitochondrial Cytochrome C Oxidase 1 Gene Mutations in Patients with Primary Ovarian Insufficiency. PLoS One 2015. [PMID: 26225554 PMCID: PMC4520565 DOI: 10.1371/journal.pone.0132610] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Primary ovarian insufficiency (POI), also known as premature ovarian failure (POF), is defined as more than six months of cessation of menses before the age of 40 years, with two serum follicle stimulating hormone (FSH) levels (at least 1 month apart) falling in the menopause range. The cause of POI remains undetermined in the majority of cases, although some studies have reported increased levels of reactive oxygen species (ROS) in idiopathic POF. The role of mitochondrial DNA in the pathogenesis of POI has not been studied extensively. This aim of this study was to uncover underlying mitochondrial genetic defects in patients with POI. The entire region of the mitochondrial genome was amplified in subjects with idiopathic POI (n=63) and age-matched healthy female controls (n=63) using nine pair sets of primers, followed by screening of the mitochondrial genome using an Illumina MiSeq. We identified a total of 96 non-synonymous mitochondrial variations in POI patients and 93 non-synonymous variations in control subjects. Of these, 21 (9 in POI and 12 in control) non-synonymous variations had not been reported previously. Eight mitochondrial cytochrome coxidase 1 (MT-CO1) missense variants were identified in POI patients, whereas only four missense mutations were observed in controls. A high incidence of MT-CO1 missense variants were identified in POI patients compared with controls, and the difference between the groups was statistically significant (13/63 vs. 5/63, p=0.042). Our results show that patients with primary ovarian insufficiency exhibit an increased incidence of mitochondrial cytochrome c oxidase 1 gene mutations, suggesting that MT-CO1 gene mutation may be causal in POI.
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Affiliation(s)
- Xiumei Zhen
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China
- Genetic Diagnosis Lab Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, 02115, United States of America
| | - Bailin Wu
- Genetic Diagnosis Lab Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, 02115, United States of America
| | - Jian Wang
- Genetic Diagnosis Lab Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, 02115, United States of America
- Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Cuiling Lu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China
| | - Huafang Gao
- Genetic Diagnosis Lab Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, 02115, United States of America
- Human Genetic Resource Center, National Research Institute for Health and Family Planning, Beijing, 100081, China
- * E-mail: (HG); (JQ)
| | - Jie Qiao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China
- * E-mail: (HG); (JQ)
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