1
|
Maylem ERS, Schütz LF, Spicer LJ. The role of asprosin in regulating ovarian granulosa- and theca-cell steroidogenesis: a review with comparisons to other adipokines. Reprod Fertil Dev 2024; 36:RD24027. [PMID: 39074236 DOI: 10.1071/rd24027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 07/04/2024] [Indexed: 07/31/2024] Open
Abstract
Adipose tissues produce a variety of biologically active compounds, including cytokines, growth factors and adipokines. Adipokines are important as they function as endocrine hormones that are related to various metabolic and reproductive diseases. The goal of this review was to summarise the role of asprosin, a recently discovered adipokine, and compare its role in ovarian steroidogenesis with that of other adipokines including adiponectin, leptin, resistin, apelin, visfatin, chemerin, irisin, and gremlin 1. The summary of concentrations of these adipokines in humans, rats and other animals will help researchers identify appropriate doses to test in future studies. Review of the literature indicated that asprosin increases androstenedione production in theca cells (Tc), and when cotreated with FSH increases oestradiol production in granulosa cells (Gc). In comparison, other adipokines (1) stimulate Gc oestradiol production but inhibit Tc androgen production (adiponectin), (2) inhibit Gc oestradiol production and Tc androstenedione production (leptin and chemerin), (3) inhibit Gc steroidogenesis with no effect on Tc (resistin), (4) inhibit Gc oestradiol production but stimulate Tc androgen production (gremlin 1), and (5) increase steroid secretion by Gc, with unknown effects on Tc steroidogenesis (apelin and visfatin). Irisin has direct effects on Gc but its precise role (inhibitory or stimulatory) may be species dependent and its effects on Tc will require additional research. Thus, most adipokines have direct effects (either positive or negative) on steroid production in ovarian cells, but how they all work together to create a cumulative effect or disease will require further research.
Collapse
Affiliation(s)
- Excel Rio S Maylem
- Philippine Carabao Center, National Headquarters and Gene Pool, Science City of Munoz, Nueva Ecija, Philippines
| | - Luis Fernando Schütz
- Department of Agriculture, Veterinary and Rangeland Sciences, University of Nevada, Reno, NV 89557, USA
| | - Leon J Spicer
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| |
Collapse
|
2
|
Suzuki E, Fukuda T. Multifaceted Functions of TWSG1: From Embryogenesis to Cancer Development. Int J Mol Sci 2022; 23:12755. [PMID: 36361543 PMCID: PMC9657663 DOI: 10.3390/ijms232112755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/11/2022] [Accepted: 10/20/2022] [Indexed: 01/21/2024] Open
Abstract
Bone morphogenetic proteins (BMPs) play an important role in development. Twisted gastrulation BMP signaling modulator 1 (TWSG1) was initially identified as a regulator of the dorsoventral axis formation in Drosophila. The mechanism of BMP signaling modulation by TWSG1 is complex. TWSG1 inhibits BMP signaling by binding to BMP ligands including BMP4, whereas it enhances signaling by interacting with Chordin, a BMP antagonist. Therefore, TWSG1 can act as both a BMP agonist and antagonist. TWSG1 has various functions ranging from embryogenesis to cancer progression. TWSG1 knockout mice showed neural, craniofacial, and mammary defects. TWSG1 also regulated erythropoiesis and thymocyte development. Furthermore, the relationship between TWSG1 and cancer has been elucidated. Allelic loss of TWSG1 was detected in colorectal cancer. TWSG1 expression was upregulated in papillary thyroid carcinoma and glioblastoma but downregulated in gastric and endometrial cancers. TWSG1 suppressed BMP7-enhanced sphere formation and migration in endometrial cancer cells, indicating its tumor-suppressive role. Further studies are required to clarify the TWSG1 function and its association with BMP signaling in cancer development. Finally, TWSG1 is abundantly expressed in human and mouse ovaries and sustains follicular growth in rodent ovaries. Thus, TWSG1 has various functions ranging from fertility to cancer. Therefore, TWSG1 signaling modulation may be beneficial in treating specific diseases such as cancer.
Collapse
Affiliation(s)
| | - Tomohiko Fukuda
- Department of Obstetrics and Gynecology, The University of Tokyo Hospital, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
| |
Collapse
|
3
|
Long X, Yang Q, Qian J, Yao H, Yan R, Cheng X, Zhang Q, Gu C, Gao F, Wang H, Zhang L, Guo F. Obesity modulates cell-cell interactions during ovarian folliculogenesis. iScience 2022; 25:103627. [PMID: 35005562 PMCID: PMC8718989 DOI: 10.1016/j.isci.2021.103627] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 11/30/2021] [Accepted: 12/10/2021] [Indexed: 02/06/2023] Open
Abstract
Obesity is known to affect female reproduction, as evidenced by obese patients suffering from subfertility and abnormal oogenesis. However, the underlying mechanisms by which obesity impairs folliculogenesis are poorly documented. Here, we performed comprehensive single-cell transcriptome analysis in both regular diet (RD) and obese mouse models to systematically uncover how obesity affects ovarian follicle cells and their interactions. We found an increased proportion of Inhbb highly expressed granulosa cells (GCs) among all the GC subpopulations in obese mice. Under obese conditions, excessive androgen secreted from endocrine theca cells (ETCs) may contribute to the imbalanced change of GC subtypes through ETCs-GCs interactions. This is alleviated by enzalutamide, an androgen receptor antagonist. We also identified and confirmed typical GC markers, such as Marcks and Prkar2b, for sensitive evaluation of female fertility in obesity. These data represent a resource for studying transcriptional networks and cell-cell interactions during folliculogenesis under physiological and pathological conditions.
Collapse
Affiliation(s)
- Xin Long
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiuyun Yang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
| | - Jingjing Qian
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
| | - Huiying Yao
- West China Second Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Rui Yan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
- West China Second Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xin Cheng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
- West China Second Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Qiancheng Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chan Gu
- West China Second Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Fei Gao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongmei Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lin Zhang
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, China
- West China Second Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Corresponding author
| | - Fan Guo
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Corresponding author
| |
Collapse
|
4
|
Spicer LJ, Schutz LF, Aad PY. Effects of bone morphogenetic protein 4, gremlin, and connective tissue growth factor on estradiol and progesterone production by bovine granulosa cells. J Anim Sci 2021; 99:6415266. [PMID: 34724558 DOI: 10.1093/jas/skab318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 10/28/2021] [Indexed: 12/20/2022] Open
Abstract
Bone morphogenetic proteins (BMPs) are members of the transforming growth factor-β family of proteins that have been implicated in the paracrine regulation of granulosa cell (GC) function, but whether responses to BMPs change with follicular size or interact with connective tissue growth factor (CTGF) or BMP antagonists (e.g., gremlin [GREM]) to directly affect GC function of cattle is unknown. Therefore, to determine the effects of BMP4 on proliferation and steroidogenesis of GCs and its interaction with GREM or CTGF, experiments were conducted using bovine GC cultures. In vitro, BMP4 (30 ng/mL) inhibited (P < 0.05) follicle-stimulating hormone (FSH) plus insulin-like growth factor 1 (IGF1)-induced progesterone and estradiol production by large- and small-follicle GCs, but the inhibitory effect of BMP4 on estradiol production was much more pronounced in large-follicle GCs. In small-follicle GCs, BMP4 had no effect (P > 0.10) on IGF1-induced proliferation, but GREM inhibited (P < 0.05) cell proliferation and estradiol and progesterone production in IGF1 plus FSH-treated GCs. In large-follicle GCs, BMP4 (10 to 30 ng/mL) increased (P < 0.05) GC numbers and GREM (100 ng/mL) blocked this effect. In large-follicle GCs, CTGF inhibited (P < 0.05) FSH plus IGF1-induced progesterone and estradiol production, and CTGF blocked the stimulatory effect of BMP4 on GC proliferation. These results indicate that BMP4, GREM, and CTGF inhibit GC aromatase activity and progesterone production. Also, the stimulatory effect of BMP4 on GC proliferation and the inhibitory effects of BMP4 on GC steroidogenesis are more pronounced in large vs. small follicles.
Collapse
Affiliation(s)
- Leon J Spicer
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Luis F Schutz
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Pauline Y Aad
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| |
Collapse
|
5
|
Abstract
The reproductive lifespan of female mammals is limited and ultimately depends on the production of a sufficient number of high quality oocytes from a pool of non-growing primordial follicles that are set aside during embryonic and perinatal development. Recent studies show multiple signaling pathways are responsible for maintaining primordial follicle arrest and regulation of activation. Identification of these pathways and their regulatory mechanisms is essential for developing novel treatments for female infertility, improving existing in vitro fertilization techniques, and more recently, restoring the function of cryopreserved ovarian tissue. This review focuses on recent developments in transforming growth factor beta (TGFβ) family signaling in ovarian follicle development and its potential application to therapeutic design. Mouse models have been an essential tool for discovering genes critical for fertility, and recent advancements in human organ culture have additionally allowed for the translation of murine discoveries into human research and clinical settings.
Collapse
|
6
|
Rydze RT, Patton B, Briley SM, Salazar-Torralba H, Gipson G, James R, Rajkovic A, Thompson T, Pangas SA. Deletion of Gremlin-2 alters estrous cyclicity and disrupts female fertility in mice. Biol Reprod 2021; 105:1205-1220. [PMID: 34333627 DOI: 10.1093/biolre/ioab148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/28/2021] [Accepted: 07/27/2021] [Indexed: 11/13/2022] Open
Abstract
Members of the differential screening-selected gene aberrative in neuroblastoma (DAN) protein family are developmentally conserved extracellular binding proteins that antagonize bone morphogenetic protein (BMP) signaling. This protein family includes the Gremlin proteins, GREM1 and GREM2, which have key functions during embryogenesis and adult physiology. While BMPs play essential roles in ovarian follicle development, the role of the DAN family in female reproductive physiology is less understood. We generated mice null for Grem2 to determine its role in female reproduction in addition to screening patients with primary ovarian insufficiency for variants in GREM2. Grem2-/- mice are viable, but female Grem2-/- mice have diminished fecundity and irregular estrous cycles. This is accompanied by significantly reduced production of ovarian anti-Müllerian hormone (AMH) from small growing follicles, leading to a significant decrease in serum AMH. Surprisingly, as AMH is a well-established marker of the ovarian reserve, morphometric analysis of ovarian follicles showed maintenance of primordial follicles in Grem2-/- mice like wild type littermates. While Grem2 mRNA transcripts were not detected in the pituitary, Grem2 is expressed in hypothalami of wild type female mice, suggesting the potential for dysfunction in multiple tissues composing the hypothalamic-pituitary-ovarian axis that contribute to the subfertility phenotype. Additionally, screening 106 women with primary ovarian insufficiency identified one individual with a heterozygous variant in GREM2 that lies within the predicted BMP-GREM2 interface. In total, these data suggest Grem2 is necessary for female fecundity by playing a novel role in regulating the HPO axis and contributing to female reproductive disease.
Collapse
Affiliation(s)
- Robert T Rydze
- Division of Reproductive Endocrinology & Infertility, Department of Obstetrics & Gynecology, Baylor College of Medicine and Texas Children's Hospital Pavilion for Women, Houston, TX, 77030, USA.,Graduate Program in Clinical Scientist Training, Baylor College of Medicine, Houston, TX 77030
| | - Bethany Patton
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030.,Graduate Program in Molecular & Cellular Biology, Baylor College of Medicine, Houston, TX 77030
| | - Shawn M Briley
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030.,Graduate Program in Biochemistry & Molecular Biology, Baylor College of Medicine, Houston, TX 77030
| | | | - Gregory Gipson
- Department of Molecular Genetics, Biochemistry, & Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Rebecca James
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030
| | - Aleksandar Rajkovic
- Department of Pathology, University of California, San Francisco, USA, Department of OB-GYN, University of California, San Francisco, USA, Institute of Human Genetics, University of California, San Francisco, USA
| | - Thomas Thompson
- Department of Molecular Genetics, Biochemistry, & Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Stephanie A Pangas
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030.,Graduate Program in Molecular & Cellular Biology, Baylor College of Medicine, Houston, TX 77030.,Graduate Program in Biochemistry & Molecular Biology, Baylor College of Medicine, Houston, TX 77030.,Department of Molecular & Cellular Biology, Baylor College of Medicine, Houston, TX 77030
| |
Collapse
|
7
|
Twisted gastrulation signaling modulator 1 promotes the ability of glioma cell through activating Akt pathway. Neuroreport 2021; 32:198-205. [PMID: 33534374 DOI: 10.1097/wnr.0000000000001581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Glioblastoma is one of the most common primary nervous system tumors and has a high mortality rate. It is necessary to explore a novel biological target and treatment approach. Twisted gastrulation signaling modulator 1 (TWSG1) is expressed in many tumors and closely related to tumor growth and proliferation. However, there is almost no report about the mechanism of TWSG1 in glioma. We used a glioma chip to detect the expression level of TWSG1 by Immunohistochemistry. The overexpression and silence experiments of TWSG1 were performed to assay the biological function of TWSG1 in LN229 and U251 cells. Subcutaneous xenograft mouse model presented the effect of TWSG1 expression on the malignant behavior of tumor cells. Experimental results displayed that the expression level for TWSG1 was substantially elevated in gliomas compared to that in normal brain tissue. The expression knockdown of TWSG1 caused inhibition of glioma cell proliferation. Besides, TWSG1 overexpression enhanced proliferation in glioma cells, and the capacity of proliferation was partly abolished by the PI3K inhibitor LY294002. We found that TWSG1 affected the activity of Akt signaling pathway. In conclusion, TWSG1 is overexpressed in glioma tissue and promotes tumor proliferation through Akt signaling pathway, may serve as a potential target for glioma diagnosis and therapy.
Collapse
|
8
|
Qin N, Tyasi TL, Sun X, Chen X, Zhu H, Zhao J, Xu R. Determination of the roles of GREM1 gene in granulosa cell proliferation and steroidogenesis of hen ovarian prehierarchical follicles. Theriogenology 2020; 151:28-40. [PMID: 32251937 DOI: 10.1016/j.theriogenology.2020.03.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 03/21/2020] [Accepted: 03/24/2020] [Indexed: 10/24/2022]
Abstract
Gremlin genes are known members of the DAN family of bone morphogenetic protein (BMP) antagonists, but their functions and regulatory mechanisms in ovarian follicular development of chicken remain unknown. The current study was designed to investigate the mRNA expression patterns of gremlin1 gene (GREM1) and its protein location in the follicles sampled, and to explore the biological effect of GREM1 on the prehierarchical follicular development. This work revealed that chicken GREM1 mRNA exhibits a constant expression level across all the prehierarchical follicles (PFs) from 1-4 mm to 7-8 mm in diameter, and the preovulatory follicles (from F6 to F1) by using RT-qPCR (P > 0.05). The GREM1 protein is predominantly expressed in the oocytes and granulosa cells (GCs) of the PFs by immunohistochemistry. Furthermore, our data demonstrated that siRNA-mediated knockdown of GREM1 in the GCs resulted in a significant reduction in cell proliferation (P < 0.001); conversely, overexpression of GREM1 in the GCs led to a remarkable increase in cell proliferation (P < 0.001). Interestingly, the expression levels of proliferating cell nuclear antigen (PCNA) and cyclin D2 (CCND2) mRNA and proteins were notably increased when GREM1 expression was upregulated in the GCs (P < 0.01), however, the expression levels of CYP11A1 and StAR were markedly downregulated (P < 0.01). The current results showed that GREM1 gene plays a stimulatory role in GC proliferation during growth and development of the prehierarchical follicles in vitro but an inhibitory role in GC differentiation and steroidogenesis of the hen ovary follicles.
Collapse
Affiliation(s)
- Ning Qin
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China; Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Thobela Louis Tyasi
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Xue Sun
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China; Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Xiaoxia Chen
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Hongyan Zhu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Jinghua Zhao
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Rifu Xu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China; Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China.
| |
Collapse
|
9
|
Hohos NM, Elliott EM, Cho KJ, Lin IS, Rudolph MC, Skaznik-Wikiel ME. High-fat diet-induced dysregulation of ovarian gene expression is restored with chronic omega-3 fatty acid supplementation. Mol Cell Endocrinol 2020; 499:110615. [PMID: 31628964 PMCID: PMC6878773 DOI: 10.1016/j.mce.2019.110615] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/09/2019] [Accepted: 10/09/2019] [Indexed: 12/26/2022]
Abstract
Chronic high-fat diet (HFD) consumption causes ovarian dysfunction in rodents. Acute dietary treatment with docosahexaenoic acid (DHA) increases oocyte quality and ovarian reserve at advanced reproductive age. We hypothesized that DHA supplementation after HFD exposure reverses HFD-induced ovarian defects. We conducted a dietary intervention with reversal to chow, DHA-supplemented chow, or DHA-supplemented HFD after HFD consumption. After 10 weeks, HFD-fed mice had impaired estrous cyclicity, decreased primordial follicles, and altered ovarian expression of 24 genes compared to chow controls. Diet reversal to either chow or chow + DHA restored estrous cyclicity, however only chow + DHA appeared to mitigated the impact of HFD on ovarian reserve. All dietary interventions restored HFD-dysregulated gene expression to chow levels. We found no association between follicular fluid DHA levels and ovarian reserve. In conclusion our data suggest some benefit of DHA supplementation after HFD, particularly in regards to ovarian gene expression, however complete restoration of ovarian function was not achieved.
Collapse
Affiliation(s)
- Natalie M Hohos
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Emily M Elliott
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Kirstin J Cho
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Ivy S Lin
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Michael C Rudolph
- Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, 12700 East 19th Ave, Aurora, CO, 80045, USA
| | | |
Collapse
|
10
|
SMAD3 directly regulates cell cycle genes to maintain arrest in granulosa cells of mouse primordial follicles. Sci Rep 2019; 9:6513. [PMID: 31015579 PMCID: PMC6478827 DOI: 10.1038/s41598-019-42878-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 04/09/2019] [Indexed: 01/05/2023] Open
Abstract
Primordial follicles, consisting of granulosa cell (GC)-enveloped oocytes are maintained in a state of developmental arrest until activated to grow. The mechanism that operates to maintain this arrested state in GCs is currently unknown. Here, we show the TGFβ-activated transcription factor SMAD3 is expressed in primordial GC nuclei alongside the cell cycle proteins, cyclin D2 (CCND2) and P27. Using neonatal C57/Bl6 mouse ovaries densely populated with primordial follicles, CCND2 protein co-localised and was detected in complex with P27 by immunofluorescence and co-immunoprecipitation, respectively. In the same tissue, SMAD3 co-precipitated with DNA sequences upstream of Ccnd2 and Myc transcription start sites implicating both as direct SMAD3 targets. In older ovaries follicle growth was associated with nuclear exclusion of SMAD3 and reduced P27 and CCND2 in GCs, alongside elevated Myc expression. Brief (2 H) exposure of neonatal ovaries to TGFβ1 (10 ng/ml) in vitro led to immediate dissociation of SMAD3 from the Ccnd2 and Myc promoters. This coincided with elevated Myc and phospho-S6, an indicator of mTOR signalling, followed by a small increase in mean primordial GC number after 48 H. These findings highlight a concentration-dependent role for TGFβ signalling in the maintenance and activation of primordial follicles, through SMAD-dependent and independent signalling pathways, respectively.
Collapse
|
11
|
Ahmad MJ, Ahmad HI, Adeel MM, Liang A, Hua G, Murtaza S, Mirza RH, Elokil A, Ullah F, Yang L. Evolutionary Analysis of Makorin Ring Finger Protein 3 Reveals Positive Selection in Mammals. Evol Bioinform Online 2019; 15:1176934319834612. [PMID: 31024214 PMCID: PMC6472170 DOI: 10.1177/1176934319834612] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 01/17/2019] [Indexed: 01/12/2023] Open
Abstract
Makorin ring finger proteins (MKRNs) are part the of ubiquitin-proteasome system;
a complex system important for cell functions. Ubiquitin fate through
proteolytic, non-proteolytic pathways varies, depending on covalent linkage
between ubiquitin and protein substrates. Makorin ring finger protein 3 is an
integral part of covalent linkage of ubiquitin to protein substrates. Similar to
others imprinted genes, MKRN3 also evolve under positive selection; however,
which codons are specifically selected in MKRN3 during evolution are needed to
be explored. Different maximum-likelihood (ML) codon-based methodologies were
used to ascertain positive selection signatures in 22 mammalian sequences of
MKRN3 to probe an individual codon for positive selection signatures. By
applying the HyPhy software package implemented in the Data Monkey Web Server
and CODEML implemented in PAML, evolutionary analysis based on two Ml frameworks
were conducted. The analysis was executed by comparing M1a against M2a, M7
against M8, and PAML models and 2∆Lnl (LRT)
was resulted by likelihood logs. M1a contributed ω1 (dN/dS)
with LRT value (∆Lnl) 12.01, and positive
selection was found in M2a with ω3 = 2.23603. To further improve selection test,
M8 was compared to M7 with 2∆Lnl (LRT) 30.17,
and M8 showed positive selection with ω = 1.55759. The data were fit to M8 than
M7, which suggests that M8 was the most significant model of selection. M8 was
judged encouraging for this analysis and used to establish a positive selection
of MKRN3 proteins. We found Gly312 as a positively selected amino acid in a zinc
finger motif/Really Interesting New Gene (RING) finger motif; the former ones’
region is involved in RNA binding and the later ones in ubiquitin ligase
activity of the protein, vital for protein function. Selection analyses of MKRNs
might advance the developments in unique approaches that could lead to genetic
progress over the selection of superior individuals with the breeding values
higher for certain traits as ancestries to get the next generation.
Collapse
Affiliation(s)
- Muhammad Jamil Ahmad
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hafiz Ishfaq Ahmad
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Institute of Applied Biological Resources, Guangzhou, China
| | - Muhammad Muzammal Adeel
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, China
| | - Aixin Liang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Guohua Hua
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Saeed Murtaza
- Faculty of veterinary sciences, Bahauddin Zakariya University Multan, Multan, Pakistan
| | - Riaz Hussain Mirza
- Faculty of veterinary sciences, Bahauddin Zakariya University Multan, Multan, Pakistan
| | - Abdelmotaleb Elokil
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China.,Animal Production Department, Faculty of Agriculture, Benha University, Moshtohor, Egypt
| | - Farman Ullah
- Department of Animal Breeding and Genetics, Faculty of Veterinary and Animal Sciences, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Pakistan
| | - Liguo Yang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| |
Collapse
|
12
|
Asadi A, Montgelard C, Nazarizadeh M, Moghaddasi A, Fatemizadeh F, Simonov E, Kami HG, Kaboli M. Evolutionary history and postglacial colonization of an Asian pit viper (Gloydius halys caucasicus) into Transcaucasia revealed by phylogenetic and phylogeographic analyses. Sci Rep 2019; 9:1224. [PMID: 30718614 PMCID: PMC6362119 DOI: 10.1038/s41598-018-37558-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 12/10/2018] [Indexed: 11/17/2022] Open
Abstract
It has been generally acknowledged that glacial climates at the time of the Pleistocene altered the patterns of species distributions, prompting latitudinal and altitudinal distribution shifts in several species, including poikilothermic species commonly known for their thermal sensitivity. However, the historical phylogeographic patterns of such species have remained largely unknown. Here, we present the historical biogeographic, phylogenetic, and phylogeographic relationships of the Caucasian pit viper, G. h. caucasicus, based on two mtDNA (cyt b and ND4) and one nDNA (c-mos) genes. This pit viper represents the westernmost member of the Crotalinae subfamily in the Palearctic and occurs in a variety of habitats, from 30 m to 3,000 m above sea level. In Iran, it is distributed on the northern and southern slopes of the Alborz Mountains, rendering it a target for phylogenetic and phylogeographic studies of a terrestrial poikilothermic animal. Our study identified four Iranian lineages of G. h. caucasicus along the northeastern to northwestern slopes of the Alborz Mountains and southern Azerbaijan (Talysh Mountains). Diversification of the Iranian lineages highlights population expansion and subsequent isolation into four plausible refugial areas during the Quaternary paleo-climatic oscillations, confirmed by our molecular dating and historical biogeographic analyses. The results of coalescence-based simulations support the incursion of the species from northeastern Iran to the western end of the Alborz, and then toward Transcaucasia via two directions: northern and southern slopes of the Alborz Mountains. Furthermore, our results clearly implied that G. h. caucasicus should be elevated to species rank and further referred to as G. caucasicus (Nikolsky, 1916).
Collapse
Affiliation(s)
- Atefeh Asadi
- CEFE, PSL-EPHE (Biogéographie et Ecologie des Vertébrés), CNRS, University Montpellier, Univ Paul Valéry Montpellier 3, IRD, Montpellier, France
| | - Claudine Montgelard
- CEFE, PSL-EPHE (Biogéographie et Ecologie des Vertébrés), CNRS, University Montpellier, Univ Paul Valéry Montpellier 3, IRD, Montpellier, France
- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, University of Johannesburg, Johannesburg, South Africa
| | - Masoud Nazarizadeh
- Department of Environmental Science, Faculty of Natural Resources, University of Tehran, Karaj, Iran
| | - Akram Moghaddasi
- Department of Environmental Science, Faculty of Natural Resources, University of Tehran, Karaj, Iran
| | - Faezeh Fatemizadeh
- Department of Environmental Science, Faculty of Natural Resources, University of Tehran, Karaj, Iran
| | - Evgeniy Simonov
- Laboratory of Forest Genomics Siberian Federal University, 660036, Akademgorodok 50a/2, rasnoyarsk, Russia
| | - Haji Gholi Kami
- Department of Biology, Faculty of Sciences, Golestan University, Gorgan, Iran
| | - Mohammad Kaboli
- Department of Environmental Science, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
| |
Collapse
|
13
|
Kim CL, Jung MY, Kim YS, Jang JW, Lee GM. Improving the production of recombinant human bone morphogenetic protein-4 in Chinese hamster ovary cell cultures by inhibition of undesirable endocytosis. Biotechnol Bioeng 2018; 115:2565-2575. [PMID: 30011067 DOI: 10.1002/bit.26798] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 06/30/2018] [Accepted: 07/11/2018] [Indexed: 12/17/2023]
Abstract
Endocytic regulation serves a critical role in modulating the extracellular level of signaling molecules, such as bone morphogenetic proteins (BMPs). Unfortunately, endocytosis may result in poor yields of recombinant human BMP-4 (rhBMP-4) from Chinese hamster ovary (CHO) cell cultures. When rhBMP-4 was incubated with CHO cells, rhBMP-4 was actively internalized into cells. Cell surface bound heparan sulfate proteoglycans (HSPGs) served as the major receptors for rhBMP-4 internalization. Removal of cell surface heparan sulfate (HS) by heparinases or reduction of HSPG synthesis by knockdown of xylosyltransferase2 (xylt2) in CHO cells decreased internalization of rhBMP-4. In addition, treatment with endocytosis inhibitors (chlorpromazine, genistein, and dynasore) identified a clathrin- and dynamin-dependent endocytic pathway as the major route for rhBMP-4 internalization. To enhance product yield by minimizing rhBMP-4 internalization in recombinant CHO (rCHO) cell cultures, we have tested various strategies to reduce HSPG synthesis (knockdown of xylt2 and sodium chlorate treatment) or inhibit the binding of rhBMP-4 to cell-surface-bound HSPGs (supplementation with heparin or dextran sulfate [DS]). Among these approaches, DS, which is a linear anionic sulfated polysaccharide with similarity to HS chains, was the most effective in enhancing rhBMP-4 production in rCHO cell cultures. Compared with the control cultures, DS addition to the culture medium (1.0 g/L) resulted in 1.4-fold and 2.3-fold increases in maximum rhBMP-4 concentration in batch and fed-batch cultures, respectively. Taken together, the addition of DS, an effective competitor of HSPGs, improved rhBMP-4 production in rCHO cell cultures through blockage of rhBMP-4 internalization.
Collapse
Affiliation(s)
- Che Lin Kim
- Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Mi Yeong Jung
- Institute of Biomaterial and Medical Engineering, Cellumed, Seoul, Republic of Korea
| | - Young Sik Kim
- Institute of Biomaterial and Medical Engineering, Cellumed, Seoul, Republic of Korea
| | - Ju Woong Jang
- Institute of Biomaterial and Medical Engineering, Cellumed, Seoul, Republic of Korea
| | - Gyun Min Lee
- Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| |
Collapse
|
14
|
Hardy K, Mora JM, Dunlop C, Carzaniga R, Franks S, Fenwick MA. Nuclear exclusion of SMAD2/3 in granulosa cells is associated with primordial follicle activation in the mouse ovary. J Cell Sci 2018; 131:jcs.218123. [PMID: 30111581 DOI: 10.1242/jcs.218123] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/31/2018] [Indexed: 12/14/2022] Open
Abstract
Maintenance and activation of the limited supply of primordial follicles in the ovary are important determinants of reproductive lifespan. Currently, the molecular programme that maintains the primordial phenotype and the early events associated with follicle activation are not well defined. Here, we have systematically analysed these events using microscopy and detailed image analysis. Using the immature mouse ovary as a model, we demonstrate that the onset of granulosa cell (GC) proliferation results in increased packing density on the oocyte surface and consequent GC cuboidalization. These events precede oocyte growth and nuclear translocation of FOXO3a, a transcription factor important in follicle activation. Immunolabelling of the TGFβ signalling mediators and transcription factors SMAD2/3 revealed a striking expression pattern specific to GCs of small follicles. SMAD2/3 were expressed in the nuclei of primordial GCs but were mostly excluded in early growing follicles. In activated follicles, GC nuclei lacking SMAD2/3 generally expressed Ki67. These findings suggest that the first phenotypic changes during follicle activation are observed in GCs, and that TGFβ signalling is fundamental for regulating GC arrest and the onset of proliferation.
Collapse
Affiliation(s)
- Kate Hardy
- Department of Surgery and Cancer, Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
| | - Jocelyn M Mora
- Department of Surgery and Cancer, Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
| | - Carina Dunlop
- Department of Mathematics, University of Surrey, Guildford GU2 7XH, UK
| | | | - Stephen Franks
- Department of Surgery and Cancer, Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
| | - Mark A Fenwick
- Department of Surgery and Cancer, Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
| |
Collapse
|
15
|
Yuan J, Zeng J, Shuai C, Liu Y. TWSG1 Is a Novel Tumor Suppressor in Gastric Cancer. DNA Cell Biol 2018; 37:574-583. [DOI: 10.1089/dna.2018.4188] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Jingyi Yuan
- School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
| | - Jiali Zeng
- School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
| | - Chun Shuai
- Neonatal Department, Guangdong Province Women's and Children's Hospital, Guangzhou, Guangzhou, People's Republic of China
| | - Yue Liu
- Department of Biochemistry and Molecular Biology, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Single-Cell Technology and Application, Guangzhou, People's Republic of China
| |
Collapse
|
16
|
Hayata T, Chiga M, Ezura Y, Asashima M, Katabuchi H, Nishinakamura R, Noda M. Dullard deficiency causes hemorrhage in the adult ovarian follicles. Genes Cells 2018. [PMID: 29521016 DOI: 10.1111/gtc.12575] [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: 11/27/2022]
Abstract
In mammals, the ovarian follicles are regulated at least in part by bone morphogenetic protein (BMP) family members. Dullard (also known as Ctdnep1) gene encodes a phosphatase that suppresses BMP signaling by inactivating or degrading BMP receptors. Here we report that the Col1a1-Cre-induced Dullard mutant mice displayed hemorrhagic ovarian cysts, with red blood cells accumulated in the follicles, resulting in infertility. Cells expressing Cre driven by Col1a1 2.3-kb promoter and their descendants were found in granulosa cells in the ovary and in Sertoli cells in the testis. DullardmRNA was localized to granulosa cells in the ovary. Genes involved in steroid hormone genesis including Cyp11a1, Hsd3b1 and Star were reduced, whereas expression of Smad6 and Smad7, BMP-inducible inhibitory Smads, was up-regulated in the Dullard mutant ovaries. Tamoxifen-inducible Dullard deletion in the whole body using Rosa26-CreER mice also resulted in hemorrhagic ovarian cysts in 2 weeks, which was rescued by administration of LDN-193189, a chemical inhibitor of BMP receptor kinase, suggesting that the hemorrhage in the Dullard-deficient ovarian follicles might be caused by increased BMP signaling. Thus, we conclude that Dullard is essential for ovarian homeostasis at least in part via suppression of BMP signaling.
Collapse
Affiliation(s)
- Tadayoshi Hayata
- Department of Biological Signaling and Regulation, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Molecular Pharmacology, Medical Research Institute, Tokyo Medical & Dental University, Bunkyo, Tokyo, Japan
| | - Masahiko Chiga
- Department of Kidney Development, Institute of Molecular Embryology and Genetics, Kumamoto University, Chuo, Kumamoto, Kumamoto, Japan.,Department of Obstetrics and Gynecology, Faculty of Life Sciences, Kumamoto University, Chuo, Kumamoto, Kumamoto, Japan
| | - Yoichi Ezura
- Department of Molecular Pharmacology, Medical Research Institute, Tokyo Medical & Dental University, Bunkyo, Tokyo, Japan
| | | | - Hidetaka Katabuchi
- Department of Obstetrics and Gynecology, Faculty of Life Sciences, Kumamoto University, Chuo, Kumamoto, Kumamoto, Japan
| | - Ryuichi Nishinakamura
- Department of Kidney Development, Institute of Molecular Embryology and Genetics, Kumamoto University, Chuo, Kumamoto, Kumamoto, Japan
| | - Masaki Noda
- Department of Molecular Pharmacology, Medical Research Institute, Tokyo Medical & Dental University, Bunkyo, Tokyo, Japan.,Department of Orthopedic Surgery, School of Medicine, Tokyo Medical & Dental University, Bunkyo, Tokyo, Japan.,Yokohama City Minato Red Cross Hospital, Yokohama, Kanagawa, Japan
| |
Collapse
|
17
|
Ahmad HI, Ahmad MJ, Adeel MM, Asif AR, Du X. Positive selection drives the evolution of endocrine regulatory bone morphogenetic protein system in mammals. Oncotarget 2018; 9:18435-18445. [PMID: 29719616 PMCID: PMC5915083 DOI: 10.18632/oncotarget.24240] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 12/06/2017] [Indexed: 12/12/2022] Open
Abstract
The rapid evolution of reproductive proteins might be driven by positive Darwinian selection. The bone morphogenetic protein family is the largest within the transforming growth factor (TGF) superfamily. A little have been known about the molecular evolution of bone morphogenetic proteins exhibiting potential role in mammalian reproduction. In this study we investigated mammalian bone morphogenetic proteins using maximum likelihood approaches of codon substitutions to identify positive Darwinian selection in various species. The proportion of positively selected sites was tested by different likelihood models for individual codon, and M8 were found to be the best model. The percentage of positively elected sites under M8 are 2.20% with ω = 1.089 for BMP2, 1.6% with ω = 1.61 for BMP 4 0.53% for BMP15 with ω = 1.56 and 0.78% for GDF9 with ω = 1.93. The percentage of estimated selection sites under M8 is strong statistical confirmation that divergence of bone morphogenetic proteins is driven by Darwinian selection. For the proteins, model M8 was found significant for all proteins with ω > 1. To further test positive selection on particular amino acids, the evolutionary conservation of amino acid were measured based on phylogenetic linkage among sequences. For exploring the impact of these somatic substitution mutations in the selection region on human cancer, we identified one pathogenic mutation in human BMP4 and one in BMP15, possibly causing prostate cancer and six neutral mutations in BMPs. The comprehensive map of selection results allows the researchers to perform systematic approaches to detect the evolutionary footprints of selection on specific gene in specific species.
Collapse
Affiliation(s)
- Hafiz Ishfaq Ahmad
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of the Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Muhammad Jamil Ahmad
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of the Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Muhammad Muzammal Adeel
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Akhtar Rasool Asif
- University of Veterinary and Animal Sciences, Lahore, Sub Campus Jhang, Pakistan
| | - Xiaoyong Du
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of the Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China.,Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P.R. China
| |
Collapse
|
18
|
Laird M, Thomson K, Fenwick M, Mora J, Franks S, Hardy K. Androgen Stimulates Growth of Mouse Preantral Follicles In Vitro: Interaction With Follicle-Stimulating Hormone and With Growth Factors of the TGFβ Superfamily. Endocrinology 2017; 158:920-935. [PMID: 28324051 PMCID: PMC5460807 DOI: 10.1210/en.2016-1538] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 01/13/2017] [Indexed: 01/06/2023]
Abstract
Androgens are essential for the normal function of mature antral follicles but also have a role in the early stages of follicle development. Polycystic ovary syndrome (PCOS), the most common cause of anovulatory infertility, is characterized by androgen excess and aberrant follicle development that includes accelerated early follicle growth. We have examined the effects of testosterone and dihydrotestosterone (DHT) on development of isolated mouse preantral follicles in culture with the specific aim of investigating interaction with follicle-stimulating hormone (FSH), the steroidogenic pathway, and growth factors of the TGFβ superfamily that are known to have a role in early follicle development. Both testosterone and DHT stimulated follicle growth and augmented FSH-induced growth and increased the incidence of antrum formation among the granulosa cell layers of these preantral follicles after 72 hours in culture. Effects of both androgens were reversed by the androgen receptor antagonist flutamide. FSH receptor expression was increased in response to both testosterone and DHT, as was that of Star, whereas Cyp11a1 was down-regulated. The key androgen-induced changes in the TGFβ signaling pathway were down-regulation of Amh, Bmp15, and their receptors. Inhibition of Alk6 (Bmpr1b), a putative partner for Amhr2 and Bmpr2, by dorsomorphin resulted in augmentation of androgen-stimulated growth and modification of androgen-induced gene expression. Our findings point to varied effects of androgen on preantral follicle growth and function, including interaction with FSH-activated growth and steroidogenesis, and, importantly, implicate the intrafollicular TGFβ system as a key mediator of androgen action. These findings provide insight into abnormal early follicle development in PCOS.
Collapse
Affiliation(s)
- Mhairi Laird
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Kacie Thomson
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Mark Fenwick
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Jocelyn Mora
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Stephen Franks
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Kate Hardy
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, United Kingdom
| |
Collapse
|
19
|
Kim YY, Tamadon A, Ku SY. Potential Use of Antiapoptotic Proteins and Noncoding RNAs for EfficientIn VitroFollicular Maturation and Ovarian Bioengineering. TISSUE ENGINEERING PART B-REVIEWS 2017; 23:142-158. [DOI: 10.1089/ten.teb.2016.0156] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yoon Young Kim
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, South Korea
| | - Amin Tamadon
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, South Korea
| | - Seung-Yup Ku
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, South Korea
| |
Collapse
|
20
|
Sharum IB, Granados-Aparici S, Warrander FC, Tournant FP, Fenwick MA. Serine threonine kinase receptor associated protein regulates early follicle development in the mouse ovary. Reproduction 2017; 153:221-231. [DOI: 10.1530/rep-16-0612] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 11/14/2016] [Accepted: 11/22/2016] [Indexed: 12/13/2022]
Abstract
The molecular mechanisms involved in regulating the development of small, gonadotrophin-independent follicles are poorly understood; however, many studies have highlighted an essential role for TGFB ligands. Canonical TGFB signalling is dependent upon intracellular SMAD proteins that regulate transcription. STRAP has been identified in other tissues as an inhibitor of the TGFB–SMAD signalling pathway. Therefore, in this study we aimed to determine the expression and role of STRAP in the context of early follicle development. Using qPCR, Strap, Smad3 and Smad7 revealed similar expression profiles in immature ovaries from mice aged 4–16 days containing different populations of early growing follicles. STRAP and SMAD2/3 proteins co-localised in granulosa cells of small follicles using immunofluorescence. Using an established culture model, neonatal mouse ovary fragments with a high density of small non-growing follicles were used to examine the effects of Strap knockdown using siRNA and STRAP protein inhibition by immuno-neutralisation. Both interventions caused a reduction in the proportion of small, non-growing follicles and an increase in the proportion and size of growing follicles in comparison to untreated controls, suggesting inhibition of STRAP facilitates follicle activation. Recombinant STRAP protein had no effect on small, non-growing follicles, but increased the mean oocyte size of growing follicles in the neonatal ovary model and also promoted the growth of isolated preantral follicles in vitro. Overall findings indicate STRAP is expressed in the mouse ovary and is capable of regulating development of small follicles in a stage-dependent manner.
Collapse
|
21
|
Hardy K, Fenwick M, Mora J, Laird M, Thomson K, Franks S. Onset and Heterogeneity of Responsiveness to FSH in Mouse Preantral Follicles in Culture. Endocrinology 2017; 158:134-147. [PMID: 27819761 PMCID: PMC5412982 DOI: 10.1210/en.2016-1435] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 10/31/2016] [Indexed: 01/03/2023]
Abstract
The obligatory role of follicle-stimulating hormone (FSH) in normal development and function of ovarian antral follicles is well recognized, but its function in preantral growth is less clear. The specific objective of this study was to investigate the response, in culture, to FSH of mouse preantral follicles of increasing size, focusing particularly on growth rate and gene expression. Preantral follicles were mechanically isolated from ovaries of C57BL/6 mice, 12 to 16 days postpartum, and single follicles cultured for up to 96 hours in medium alone (n = 511) or with recombinant human FSH 10 ng/mL (n = 546). Data were grouped according to initial follicle diameter in 6 strata ranging from <100 to >140 μm. Follicles of all sizes grew in the absence of FSH (P < 0.01, paired t test). All follicles grew at a faster rate (P < 0.0001) in the presence of 10 ng/mL FSH but larger follicles showed the greatest change in response to FSH. Even the smallest follicles expressed FSH receptor messenger RNA (mRNA). FSH-induced growth was inhibited by KT5720, an inhibitor of protein kinase A (PKA), implicating the PKA pathway in FSH-induced follicle growth. In response to FSH in vitro, FSH receptor mRNA (measured by quantitative polymerase chain reaction) was reduced (P < 0.01), as was Amh (P < 0.01), whereas expression of StAR (P < 0.0001) and the steroidogenic enzymes Cyp11a1 (P < 0.01) and Cyp19 (P < 0.0001) was increased. These results show heterogeneous responses to FSH according to initial follicle size, smaller follicles being less FSH dependent than larger preantral follicles. These findings strongly suggest that FSH has a physiological role in preantral follicle growth and function.
Collapse
Affiliation(s)
- Kate Hardy
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, W12 0NN, United Kingdom
| | - Mark Fenwick
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, W12 0NN, United Kingdom
| | - Jocelyn Mora
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, W12 0NN, United Kingdom
| | - Mhairi Laird
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, W12 0NN, United Kingdom
| | - Kacie Thomson
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, W12 0NN, United Kingdom
| | - Stephen Franks
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London, W12 0NN, United Kingdom
| |
Collapse
|
22
|
Bonnet A, Servin B, Mulsant P, Mandon-Pepin B. Spatio-Temporal Gene Expression Profiling during In Vivo Early Ovarian Folliculogenesis: Integrated Transcriptomic Study and Molecular Signature of Early Follicular Growth. PLoS One 2015; 10:e0141482. [PMID: 26540452 PMCID: PMC4634757 DOI: 10.1371/journal.pone.0141482] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 10/08/2015] [Indexed: 11/19/2022] Open
Abstract
Background The successful achievement of early ovarian folliculogenesis is important for fertility and reproductive life span. This complex biological process requires the appropriate expression of numerous genes at each developmental stage, in each follicular compartment. Relatively little is known at present about the molecular mechanisms that drive this process, and most gene expression studies have been performed in rodents and without considering the different follicular compartments. Results We used RNA-seq technology to explore the sheep transcriptome during early ovarian follicular development in the two main compartments: oocytes and granulosa cells. We documented the differential expression of 3,015 genes during this phase and described the gene expression dynamic specific to these compartments. We showed that important steps occurred during primary/secondary transition in sheep. We also described the in vivo molecular course of a number of pathways. In oocytes, these pathways documented the chronology of the acquisition of meiotic competence, migration and cellular organization, while in granulosa cells they concerned adhesion, the formation of cytoplasmic projections and steroid synthesis. This study proposes the involvement in this process of several members of the integrin and BMP families. The expression of genes such as Kruppel-like factor 9 (KLF9) and BMP binding endothelial regulator (BMPER) was highlighted for the first time during early follicular development, and their proteins were also predicted to be involved in gene regulation. Finally, we selected a data set of 24 biomarkers that enabled the discrimination of early follicular stages and thus offer a molecular signature of early follicular growth. This set of biomarkers includes known genes such as SPO11 meiotic protein covalently bound to DSB (SPO11), bone morphogenetic protein 15 (BMP15) and WEE1 homolog 2 (S. pombe)(WEE2) which play critical roles in follicular development but other biomarkers are also likely to play significant roles in this process. Conclusions To our knowledge, this is the first in vivo spatio-temporal exploration of transcriptomes derived from early follicles in sheep.
Collapse
Affiliation(s)
- Agnes Bonnet
- INRA, UMR 1388 GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31326 Castanet-Tolosan, France
- Université de Toulouse, INP, ENSAT, GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31326 Castanet-Tolosan, France
- Université de Toulouse, INP, ENVT, GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31076 Toulouse, France
- * E-mail:
| | - Bertrand Servin
- INRA, UMR 1388 GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31326 Castanet-Tolosan, France
- Université de Toulouse, INP, ENSAT, GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31326 Castanet-Tolosan, France
- Université de Toulouse, INP, ENVT, GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31076 Toulouse, France
| | - Philippe Mulsant
- INRA, UMR 1388 GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31326 Castanet-Tolosan, France
- Université de Toulouse, INP, ENSAT, GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31326 Castanet-Tolosan, France
- Université de Toulouse, INP, ENVT, GenPhySE (Génétique, Physiologie et Systèmes d’Elevage), F-31076 Toulouse, France
| | - Beatrice Mandon-Pepin
- INRA, UMR1198 Biologie du Développement et de la Reproduction, F-78350 Jouy-en-Josas, France
| |
Collapse
|
23
|
Xie SY, Wang D, Zhu H, Zhang W, Geng NQ, Feng X, Sun CX, Li M. Cloning and spatio-temporal expression of bone morphogenetic proteins-2,-4 gene during ovarian development in New Zealand white rabbit. Reprod Domest Anim 2014; 49:1000-3. [PMID: 25256420 DOI: 10.1111/rda.12421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Accepted: 08/10/2014] [Indexed: 11/27/2022]
Abstract
In the transforming growth factor-β(TGF-β) superfamily, bone morphogenetic proteins (BMPs) are one of the largest subfamily, among which BMP-2 and BMP-4 are the most powerful molecules in biological activities. They have been shown to be involved in follicle development of ovary in mammals. However, whether these factors are involved in folliculogenesis in rabbit is still unknown. This study was performed to determine the relationships between ovarian development and the expression of BMP (BMP-2,-4) mRNAs in rabbit. Ovaries were removed from different development stages of rabbits (30-, 60-, 120-, 180-day age and 6-day encyesis), and method of RT-PCR was used for the cloning. The relative transcript levels of BMP-2,-4 genes were measured by real-time quantitative PCR, with GAPDH as an internal control. Known from the results, the BMP-2,-4 genes showed similar but also different expression patterns during ovarian development; they both increased significantly (p < 0.05) in the ovary on 60-day compared with 120-day and 6-day encyesis, and the expression of BMP-2 was always higher than that of BMP-4. The expression law of BMP-2,-4 genes presented in this study may lay the theoretical foundation for the study of BMPs' biological function.
Collapse
Affiliation(s)
- S-Y Xie
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Nilsson EE, Larsen G, Skinner MK. Roles of Gremlin 1 and Gremlin 2 in regulating ovarian primordial to primary follicle transition. Reproduction 2014; 147:865-74. [PMID: 24614542 DOI: 10.1530/rep-14-0005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A network of extracellular signaling factors has previously been shown to act in concert to control the ovarian primordial to primary follicle transition. The current study was designed to investigate the roles of the endogenous bone morphogenetic protein (BMP) inhibitors Gremlin 1 (GREM1) and GREM2 in primordial follicle transition in the rat ovary. GREM1 and GREM2 treatments were found to reverse the effects of anti-Müllerian hormone (AMH) to inhibit follicle transition in a whole-ovary culture system. GREM1 reversed the effect of BMP4 to stimulate primordial follicle transition. Immunohistochemical studies showed that GREM2, but not GREM1, was present in primordial follicles suggesting that GREM2 may regulate primordial follicle transition in vivo. Co-immunoprecipitation studies indicated that GREM2 directly binds to AMH, as well as to BMP4. Transcriptome analyses of ovaries treated with GREM2 or GREM1 yielded negligible numbers of differentially expressed genes, suggesting that the immediate effects of GREM2 or GREM1 appear to be at the level of protein-protein interactions, rather than direct actions on the cells. A number of other ovarian growth factors were found to influence the expression of Grem2. Observations suggest that Grem2 is a part of the signaling network of growth factors that regulate the primordial to primary follicle transition. Insights into the regulatory networks affecting the pool of primordial follicles are important to understand the molecular basis for reproductive diseases such as primary ovarian insufficiency.
Collapse
Affiliation(s)
- Eric E Nilsson
- School of Biological SciencesCenter for Reproductive Biology, Washington State University, Pullman, Washington 99164-4236, USA
| | - Ginger Larsen
- School of Biological SciencesCenter for Reproductive Biology, Washington State University, Pullman, Washington 99164-4236, USA
| | - Michael K Skinner
- School of Biological SciencesCenter for Reproductive Biology, Washington State University, Pullman, Washington 99164-4236, USA
| |
Collapse
|
25
|
Visser JA, Themmen APN. Role of anti-Müllerian hormone and bone morphogenetic proteins in the regulation of FSH sensitivity. Mol Cell Endocrinol 2014; 382:460-465. [PMID: 23994017 DOI: 10.1016/j.mce.2013.08.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 08/18/2013] [Indexed: 10/26/2022]
Abstract
The ovary is under control of the hypothalamus and pituitary through the glycoprotein hormones LH and FSH. These hormones undergo a cyclic variation which results in the selection of the species-specific number of follicles that will ovulate during the cycle. Where LH is the main ovulatory hormone and regulator of corpus luteum function, FSH plays an essential role in the cyclic recruitment of the follicles. Within the microenvironment of the ovary, growth factors affect this dominant control of FSH by regulating the FSH sensitivity of individual follicles. In this review we discuss the role of anti-Müllerian hormone (AMH) and bone morphogenetic proteins (BMPs) in this process.
Collapse
Affiliation(s)
- Jenny A Visser
- Dept. of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Axel P N Themmen
- Dept. of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands.
| |
Collapse
|
26
|
Kristensen SG, Andersen K, Clement CA, Franks S, Hardy K, Andersen CY. Expression of TGF-beta superfamily growth factors, their receptors, the associated SMADs and antagonists in five isolated size-matched populations of pre-antral follicles from normal human ovaries. ACTA ACUST UNITED AC 2013; 20:293-308. [DOI: 10.1093/molehr/gat089] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
|
27
|
Fenwick MA, Mora JM, Mansour YT, Baithun C, Franks S, Hardy K. Investigations of TGF-β signaling in preantral follicles of female mice reveal differential roles for bone morphogenetic protein 15. Endocrinology 2013; 154:3423-36. [PMID: 23782946 DOI: 10.1210/en.2012-2251] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Bone morphogenetic protein 15 (BMP15) and growth differentiation factor 9 (GDF9) are 2 closely related TGF-β ligands implicated as key regulators of follicle development and fertility. Animals harboring mutations of these factors often exhibit a blockage in follicle development beyond the primary stage and therefore little is known about the role of these ligands during subsequent (preantral) stages. Preantral follicles isolated from immature mice were cultured with combinations of BMP15, GDF9, and activin receptor-like kinase (ALK) inhibitors. Individually, GDF9 and BMP15 promoted follicle growth during the first 24 hours, whereas BMP15 subsequently (48-72 h) caused follicle shrinkage and atresia with increased granulosa cell apoptosis. Inhibition of ALK6 prevented the BMP15-induced reduction in follicle size and under basal conditions promoted a rapid increase in granulosa cell proliferation, suggesting BMP15 signals through ALK6, which in turn acts to restrain follicle growth. In the presence of GDF9, BMP15 no longer promoted atresia and in fact follicle growth was increased significantly more than with either ligand alone. This cooperative effect was accompanied by differential expression of Id1-3, Smad6-7, and Has2 and was blocked by the same ALK5 inhibitor used to block GDF9 signaling. Immunostaining for SMAD2/3 and SMAD1/5/8, representing the 2 main branches of TGF-β signaling, supported the fact that both canonical pathways have the potential to be active in growing follicles, whereas primordial follicles only express SMAD2/3. Overall results highlight differential effects of the 2 main TGF-β signaling pathways during preantral follicle growth.
Collapse
Affiliation(s)
- Mark A Fenwick
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0NN, United Kingdom.
| | | | | | | | | | | |
Collapse
|
28
|
Functional link between bone morphogenetic proteins and insulin-like peptide 3 signaling in modulating ovarian androgen production. Proc Natl Acad Sci U S A 2013; 110:E1426-35. [PMID: 23530236 DOI: 10.1073/pnas.1222216110] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Bone morphogenetic proteins (BMPs) are firmly implicated as intra-ovarian regulators of follicle development and steroidogenesis. Here we report a microarray analysis showing that treatment of cultured bovine theca cells (TC) with BMP6 significantly (>twofold; P < 0.01) up- or down-regulated expression of 445 genes. Insulin-like peptide 3 (INSL3) was the most heavily down-regulated gene (-43-fold) with cytochrome P450, subfamily XVII (CYP17A1) and other key steroidogenic transcripts including steroidogenic acute regulatory protein (STAR), cytochrome P450 family 11, subfamily A1 (CYP11A1) and 3 beta-hydroxysteroid dehydrogenase type 1 (HSD3B1) also down-regulated. BMP6 also reduced expression of nuclear receptor subfamily 5A1 (NR5A1) known to target the promoter regions of the aforementioned genes. Real-time PCR confirmed these findings and also revealed a marked reduction in expression of INSL3 receptor, relaxin/insulin-like family peptide receptor 2 (RXFP2). Secretion of INSL3 protein and androstenedione were also suppressed suggesting a functional link between BMP and INSL3 pathways in controlling androgen synthesis. RNAi-mediated knockdown of INSL3 reduced INSL3 mRNA (75%) and protein (94%) level and elicited a 77% reduction in CYP17A1 mRNA and 83% reduction in androstenedione secretion. Knockdown of RXFP2 also reduced CYP17A1 expression (81%) and androstenedione secretion (88%). Conversely, treatment with exogenous (human) INSL3 increased androstenedione secretion ∼twofold. The CYP17A1 inhibitor abiraterone abolished androgen secretion and reduced expression of both INSL3 and RXFP2. Collectively, these findings indicate a positive autoregulatory role for INSL3 signaling in maintaining thecal androgen production, and visa versa. Moreover, BMP6-induced suppression of thecal androgen synthesis may be mediated, at least in part, by reduced INSL3-RXFP2 signaling.
Collapse
|
29
|
Endo M, Kawahara-Miki R, Cao F, Kimura K, Kuwayama T, Monji Y, Iwata H. Estradiol supports in vitro development of bovine early antral follicles. Reproduction 2013; 145:85-96. [DOI: 10.1530/rep-12-0319] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Antrum formation and estradiol (E2) secretion are specific features of oocyte and granulosa cell complexes (OGCs). This study investigates the effect of E2 on the in vitro development of bovine OGCs derived from early antral follicles as well as on the expression of genes in granulosa cells (GCs). The supplementation of culture medium with either E2 or androstenedione (A4) improved the in vitro development of OGCs and the nuclear maturation of enclosed oocytes. When OGCs were cultured in medium containing A4, developmentally competent OGCs secreted more E2 than OGCs that were not competent. In addition, fulvestrant inhibited the effect of both E2 and A4 on OGCs development. Comprehensive gene expression analysis using next-generation sequence technology was conducted for the following three types of GCs: i) GCs of OGCs cultured for 4 days with E2 (1 μg/ml; E2(+)), ii) GCs of OGCs cultured for 4 days without E2 (E2(−)) or iii) OGCs that formed clear antrum after 8 days of in vitro culture in medium containing E2 (1 μg/ml; AF group). GCs of the E2(+) group had a similar gene expression profile to the profile reported previously for the in vivo development of large follicles. This genetic profile included factors implicated in the up-regulation of E2 biosynthesis and down-regulation of cytoskeleton and extracellular matrices. In addition, a novel gene expression profile was found in the AF group. In conclusion, E2 impacts the gene expression profile of GCs to support the in vitro development of OGCs.
Collapse
|
30
|
Fleming R, Kelsey TW, Anderson RA, Wallace WH, Nelson SM. Interpreting human follicular recruitment and antimüllerian hormone concentrations throughout life. Fertil Steril 2012; 98:1097-102. [PMID: 22921077 DOI: 10.1016/j.fertnstert.2012.07.1114] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 07/13/2012] [Accepted: 07/13/2012] [Indexed: 11/28/2022]
Abstract
The changes in the relationships between circulating antimüllerian hormone, the size of the primordial follicle pool, and follicular recruitment before and through the reproductive years have now been clarified, and show dynamic changes through sexual development. The constant relationship between the number of follicles and circulating antimüllerian hormone exists only after the age of 25 years, implying that the association between follicular recruitment and follicular survival to the later stages of development is not constant across the reproductive life course. This commentary assesses the factors that may underlie these relationships and their clinical implications for reproductive health.
Collapse
Affiliation(s)
- Richard Fleming
- Glasgow Centre for Reproductive Medicine, Glasgow, United Kingdom.
| | | | | | | | | |
Collapse
|
31
|
Pangas SA. Regulation of the ovarian reserve by members of the transforming growth factor beta family. Mol Reprod Dev 2012; 79:666-79. [PMID: 22847922 DOI: 10.1002/mrd.22076] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 07/13/2012] [Indexed: 11/08/2022]
Abstract
Genetic or environmental factors that affect the endowment of oocytes, their assembly into primordial follicles, or their subsequent entry into the growing follicle pool can disrupt reproductive function and may underlie disorders such as primary ovarian insufficiency. Mouse models have been instrumental in identifying genes important in ovarian development, and a number of genes now associated with ovarian dysfunction in women were first identified as causing reproductive defects in knockout mice. The transforming growth factor beta (TGFB) family consists of developmentally important growth factors that include the TGFBs, anti-Müllerian hormone (AMH), activins, bone morphogenetic proteins (BMPs), and growth and differentiation factor 9 (GDF9). The ovarian primordial follicle pool is the source of oocytes in adults. Development of this pool can be grossly divided into three key processes: (1) establishment of oocytes during embryogenesis followed by (2) assembly and (3) activation of the primordial follicle. Disruptions in any of these processes may cause reproductive dysfunction. Most members of the TGFB family show pivotal roles in each of these areas. Understanding the phenotypes of various mouse models for this protein family will be directly relevant to understanding how disruptions in TGFB family signaling result in reproductive diseases in women and will present new areas for development of tailored diagnostics and interventions for infertility.
Collapse
Affiliation(s)
- Stephanie A Pangas
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas 77030, USA.
| |
Collapse
|
32
|
Childs AJ, McNeilly AS. Epithelial-to-mesenchymal transition in granulosa cells: a key to activation of follicle growth? Biol Reprod 2012; 86:152, 1-2. [PMID: 22402964 DOI: 10.1095/biolreprod.112.100156] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- Andrew J Childs
- MRC Centre for Reproductive Health, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom.
| | | |
Collapse
|
33
|
Mora JM, Fenwick MA, Castle L, Baithun M, Ryder TA, Mobberley M, Carzaniga R, Franks S, Hardy K. Characterization and Significance of Adhesion and Junction-Related Proteins in Mouse Ovarian Follicles1. Biol Reprod 2012; 86:153, 1-14. [DOI: 10.1095/biolreprod.111.096156] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
|