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Radomsky T, Anderson RC, Millar RP, Newton CL. Restoring function to inactivating G protein-coupled receptor variants in the hypothalamic-pituitary-gonadal axis 1. J Neuroendocrinol 2024:e13418. [PMID: 38852954 DOI: 10.1111/jne.13418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 03/30/2024] [Accepted: 05/15/2024] [Indexed: 06/11/2024]
Abstract
G protein-coupled receptors (GPCRs) are central to the functioning of the hypothalamic-pituitary-gonadal axis (HPG axis) and include the rhodopsin-like GPCR family members, neurokinin 3 receptor, kappa-opioid receptor, kisspeptin 1 receptor, gonadotropin-releasing hormone receptor, and the gonadotropin receptors, luteinizing hormone/choriogonadotropin receptor and follicle-stimulating hormone receptor. Unsurprisingly, inactivating variants of these receptors have been implicated in a spectrum of reproductive phenotypes, including failure to undergo puberty, and infertility. Clinical induction of puberty in patients harbouring such variants is possible, but restoration of fertility is not always a realisable outcome, particularly for those patients suffering from primary hypogonadism. Thus, novel pharmaceuticals and/or a fundamental change in approach to treating these patients are required. The increasing wealth of data describing the effects of coding-region genetic variants on GPCR function has highlighted that the majority appear to be dysfunctional as a result of misfolding of the encoded receptor protein, which, in turn, results in impaired receptor trafficking through the secretory pathway to the cell surface. As such, these intracellularly retained receptors may be amenable to 'rescue' using a pharmacological chaperone (PC)-based approach. PCs are small, cell permeant molecules hypothesised to interact with misfolded intracellularly retained proteins, stabilising their folding and promoting their trafficking through the secretory pathway. In support of the use of this approach as a viable therapeutic option, it has been observed that many rescued variant GPCRs retain at least a degree of functionality when 'rescued' to the cell surface. In this review, we examine the GPCR PC research landscape, focussing on the rescue of inactivating variant GPCRs with important roles in the HPG axis, and describe what is known regarding the mechanisms by which PCs restore trafficking and function. We also discuss some of the merits and obstacles associated with taking this approach forward into a clinical setting.
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Affiliation(s)
- Tarryn Radomsky
- Centre for Neuroendocrinology, Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Ross C Anderson
- Centre for Neuroendocrinology, Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Robert P Millar
- Centre for Neuroendocrinology, Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Deanery of Biomedical Sciences, University of Edinburgh, Edinburgh, UK
- Faculty of Health Sciences, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- School of Medicine, University of St Andrews, St Andrews, UK
| | - Claire L Newton
- Centre for Neuroendocrinology, Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Deanery of Biomedical Sciences, University of Edinburgh, Edinburgh, UK
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Bakhshalizadeh S, Afkhami F, Bell KM, Robevska G, van den Bergen J, Cronin S, Jaillard S, Ayers KL, Kumar P, Siebold C, Xiao Z, Tate EW, Danaei S, Farzadi L, Shahbazi S, Sinclair AH, Tucker EJ. Diverse genetic causes of amenorrhea in an ethnically homogeneous cohort and an evolving approach to diagnosis. Mol Cell Endocrinol 2024; 587:112212. [PMID: 38521400 DOI: 10.1016/j.mce.2024.112212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/12/2024] [Accepted: 03/16/2024] [Indexed: 03/25/2024]
Abstract
RESEARCH QUESTION Premature ovarian insufficiency (POI) is characterised by amenorrhea associated with elevated follicle stimulating hormone (FSH) under the age of 40 years and affects 1-3.7% women. Genetic factors explain 20-30% of POI cases, but most causes remain unknown despite genomic advancements. DESIGN We used whole exome sequencing (WES) in four Iranian families, validated variants via Sanger sequencing, and conducted the Acyl-cLIP assay to measure HHAT enzyme activity. RESULTS Despite ethnic homogeneity, WES revealed diverse genetic causes, including a novel homozygous nonsense variant in SYCP2L, impacting synaptonemal complex (SC) assembly, in the first family. Interestingly, the second family had two independent causes for amenorrhea - the mother had POI due to a novel homozygous loss-of-function variant in FANCM (required for chromosomal stability) and her daughter had primary amenorrhea due to a novel homozygous GNRHR (required for gonadotropic signalling) frameshift variant. WES analysis also provided cytogenetic insights. WES revealed one individual was in fact 46, XY and had a novel homozygous missense variant of uncertain significance in HHAT, potentially responsible for complete sex reversal although functional assays did not support impaired HHAT activity. In the remaining individual, WES indicated likely mosaic Turners with the majority of X chromosome variants having an allelic balance of ∼85% or ∼15%. Microarray validated the individual had 90% 45,XO. CONCLUSIONS This study demonstrates the diverse causes of amenorrhea in a small, isolated ethnic cohort highlighting how a genetic cause in one individual may not clarify familial cases. We propose that, in time, genomic sequencing may become a single universal test required for the diagnosis of infertility conditions such as POI.
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Affiliation(s)
- Shabnam Bakhshalizadeh
- Murdoch Children's Research Institute, Melbourne, Australia; Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - Fateme Afkhami
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Katrina M Bell
- Department of Bioinformatics, Murdoch Children's Research Institute, Melbourne, Australia
| | | | | | - Sara Cronin
- Cyto-Molecular Diagnostic Research Laboratory, Victorian Clinical Genetics Services and Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, 3052, Victoria, Australia
| | - Sylvie Jaillard
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail), UMR_S 1085, F-35000, Rennes, France; CHU Rennes, Service de Cytogénétique et Biologie Cellulaire, F-35033, Rennes, France
| | - Katie L Ayers
- Murdoch Children's Research Institute, Melbourne, Australia; Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - Pramod Kumar
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - Christian Siebold
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - Zhangping Xiao
- Department of Chemistry, Imperial College London, 82 Wood Lane, London, W12 0BZ, UK
| | - Edward W Tate
- Department of Chemistry, Imperial College London, 82 Wood Lane, London, W12 0BZ, UK
| | - Shahla Danaei
- Department of Obstetrics and Gynecology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Laya Farzadi
- Department of Obstetrics and Gynecology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shirin Shahbazi
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Andrew H Sinclair
- Murdoch Children's Research Institute, Melbourne, Australia; Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - Elena J Tucker
- Murdoch Children's Research Institute, Melbourne, Australia; Department of Paediatrics, University of Melbourne, Melbourne, Australia.
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Tocci A, Barad D, Łukaszuk K, Orvieto R. Routine double-ovarian-stimulation (DuoStim) in poor responders lacks rationale, evidence, and follow-up. Hum Reprod 2023; 38:329-333. [PMID: 36692185 DOI: 10.1093/humrep/dead002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/22/2022] [Indexed: 01/25/2023] Open
Abstract
Double ovarian stimulation (DuoStim), initially only suggested for fertility preservation in cancer patients, is now increasingly also used in routine clinical IVF, especially in poor responders. The claimed rational for this is the alleged existence of multiple follicular waves in a single intermenstrual interval, allowing for retrieval of more oocytes in a single IVF cycle. This commentary argues that this expansion of purpose lacks rationale, evidence, and follow-up. Consequently, we suggest that, unless valid clinical indications have been established, DuoStim be only subject of controlled clinical trials with appropriate experimental consents.
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Affiliation(s)
- Angelo Tocci
- Reproductive Medicine Unit, Gruppo Donnamed, Rome, Italy
| | - David Barad
- Center for Human Reproduction, New York, NY, USA.,The Foundation for Reproductive Medicine, New York, NY, USA
| | - Krzysztof Łukaszuk
- INVICTA Fertility and Reproductive Centers, Gdańsk, Poland.,Department of Obstetrics and Gynaecological Nursing, Faculty of Health Sciences, Medical University of Gdańsk, Gdańsk, Poland.,iYoni App-For Fertility Treatment, LifeBite, Olsztyn, Poland
| | - Raoul Orvieto
- Department of Obstetrics and Gynecology, Chaim Sheba Medical Center (Tel Hashomer), Ramat Gan, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Mu Z, Shen S, Lei L. Resistant ovary syndrome: Pathogenesis and management strategies. Front Med (Lausanne) 2022; 9:1030004. [PMCID: PMC9626816 DOI: 10.3389/fmed.2022.1030004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 10/04/2022] [Indexed: 11/13/2022] Open
Abstract
Resistant ovary syndrome (ROS) is a rare and difficult gynecological endocrine disorder that poses a serious risk to women’s reproductive health. The clinical features are normal sex characteristics, regular female karyotype, and usual ovarian reserve, but elevated endogenous gonadotropin levels and low estrogen levels with primary or secondary amenorrhea. Although there have been many case reports of the disease over the past 50 years, the pathogenesis of the disease is still poorly understood, and there are still no effective clinical management strategies. In this review, we have collected all the current reports on ROS and summarized the pathogenesis and treatment strategies for this disease, intending to provide some clinical references for the management and treatment of this group of patients and provide the foothold for future studies.
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Nagel M, Moretti R, Paschke R, von Bergen M, Meiler J, Kalkhof S. Integrative model of the FSH receptor reveals the structural role of the flexible hinge region. Structure 2022; 30:1424-1431.e3. [PMID: 35973423 DOI: 10.1016/j.str.2022.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 11/16/2021] [Accepted: 07/20/2022] [Indexed: 11/16/2022]
Abstract
The follicle-stimulating hormone receptor (FSHR) belongs to the glycoprotein hormone receptors, a subfamily of G-protein-coupled receptors (GPCRs). FSHR is involved in reproductive processes such as gonadal development and maturation. Structurally, the extensive extracellular domain, which contains the hormone-binding site and is linked to the transmembrane domain by the hinge region (HR), is characteristic for these receptors. How this HR is involved in hormone binding and signal transduction is still an open question. We combined in vitro and in situ chemical crosslinking, disulfide pattern analysis, and mutation data with molecular modeling to generate experimentally driven full-length models. These models provide insights into the interface, important side-chain interactions, and activation mechanism. The interface indicates a strong involvement of the connecting loop. A major rearrangement of the HR seems implausible due to the tight arrangement and fixation by disulfide bonds. The models are expected to allow for testable hypotheses about signal transduction and drug development for GPHRs.
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Affiliation(s)
- Marcus Nagel
- Department for Molecular Systems Biology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany; Center for Structural Biology, Vanderbilt University, Nashville, TN 37212, USA; Division of Endocrinology, Department of Endocrinology and Nephrology, University Clinic Leipzig, Germany
| | - Rocco Moretti
- Center for Structural Biology, Vanderbilt University, Nashville, TN 37212, USA
| | - Ralf Paschke
- Division of Endocrinology, Department of Endocrinology and Nephrology, University Clinic Leipzig, Germany; Department of Medicine, Division of Endocrinology, Departments of Oncology, Pathology, and Biochemistry and Molecular Biology & Arnie Charbonneau Cancer Institute Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Martin von Bergen
- Department for Molecular Systems Biology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany; Institute of Biochemistry, Faculty of Life Sciences, University of Leipzig, Leipzig, Germany
| | - Jens Meiler
- Center for Structural Biology, Vanderbilt University, Nashville, TN 37212, USA; Leipzig University Medical School, Institute for Drug Discovery, 04103 Leipzig, Germany.
| | - Stefan Kalkhof
- Department for Molecular Systems Biology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany; Institute for Bioanalysis, University of Applied Sciences Coburg, Coburg, Germany; Fraunhofer Institute for Cell Therapy and Immunology, Department of Preclinical Development and Validation, 04103 Leipzig, Germany.
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Human Umbilical Cord Mesenchymal Stem Cell-Derived Extracellular Vesicles Carrying MicroRNA-29a Improves Ovarian Function of Mice with Primary Ovarian Insufficiency by Targeting HMG-Box Transcription Factor/Wnt/β-Catenin Signaling. DISEASE MARKERS 2022; 2022:5045873. [PMID: 35845134 PMCID: PMC9277157 DOI: 10.1155/2022/5045873] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 05/23/2022] [Accepted: 06/02/2022] [Indexed: 12/05/2022]
Abstract
Background Primary ovarian insufficiency (POI) is a female disease characterized by ovarian function loss under 40 years old. Transplantation of exosomes is an encouraging regenerative medicine method that has the potential for restoring ovarian functions post-POI with high efficiency. Therefore, we investigate the therapeutic efficacy and potential mechanisms of human umbilical cord mesenchymal stem cell- (UCMSC-) derived exosomes on ovarian dysfunction post-POI. Methods The model of POI was established by intraperitoneal injection with 5 mg/kg cisplatin. The mouse ovarian function was detected by measuring the levels of anti-Mullerian hormone, follicle-stimulating hormone, and estradiol and detecting the morphological changes. For in vitro experiments, the characterization and identification of UCMSCs and UCMSC-derived exosomes were done by observation of morphologies and flow cytometry. To exclude the interference effect of nonspecific precipitation substances, UCMSCs were treated with RNase A or RNase A in combination with Triton X-100. Granulosa cell (GC) identification was performed using immunofluorescence. GC proliferation and viability were assessed using 5-ethynyl-2′-deoxyuridine (EdU) assays and Cell Counting Kit-8 (CCK-8), and GC apoptosis was calculated by flow cytometry. Gene expression and protein levels were evaluated using reverse transcription quantitative polymerase chain reaction (RT-qPCR) and western blotting. The binding relationship between miR-29a and HMG-box transcription factor (HBP1) was verified by luciferase reporter assays. Results In vitro, the human UCMSC-derived exosomes carrying miR-29a upregulation promoted the proliferation of GCs and suppressed their apoptosis. In vivo, miR-29a upregulation reserved the mature follicles and restored the ovarian functions. miR-29a targeted HBP1 and negatively regulated its expression. HBP1 upregulation rescued the miR-29a upregulation-induced inhibition in GC apoptosis and inactivated the Wnt/β-catenin pathway. Conclusion The exosomal miR-29a derived from human UCMSCs improves the ovarian function by targeting HBP1 and activating the Wnt/β-catenin pathway.
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Tocci A. Reply: In response to: why double ovarian stimulation in an in vitro fertilization cycle is potentially unsafe? Hum Reprod 2022; 37:1947-1949. [DOI: 10.1093/humrep/deac128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Oktem O. In response to: why double ovarian stimulation in an in vitro fertilization cycle is potentially unsafe? Hum Reprod 2022; 37:1945-1947. [DOI: 10.1093/humrep/deac127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ozgur Oktem
- Department of Obstetrics and Gynecology, Division Reproductive Endocrinology and Infertility, Assisted Reproduction Unit, Koç University School of Medicine , Istanbul, Turkey
- The Graduate School of Health Sciences, Koç University , Istanbul, Turkey
- Research Center for Translational Medicine, Koç University , Istanbul, Turkey
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Oncul M, Ozcivit IB, Basibuyuk Z, Cebi C, Sahmay S. Anti-Müllerian hormone, an ovarian reserve marker in hypogonadotropic hypogonadism. Eur J Obstet Gynecol Reprod Biol 2022; 273:54-58. [PMID: 35477042 DOI: 10.1016/j.ejogrb.2022.04.016] [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: 05/23/2021] [Revised: 01/25/2022] [Accepted: 04/17/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To determine the usefulness of Anti-Müllerian Hormone (AMH) and antral follicle count (AFC) as an ovarian reserve marker in hypogonadotropic hypogonadism (HH) patients and to find a limit value for the gonadotropin levels in the diagnosis of HH patients. STUDY DESIGN It is a retrospective cross-sectional single-center study. One hundred ninety-nine women with HH and 171 healthy controls with no cycle disorders were included into this study. Continuous variables were expressed as mean ± standard deviation. Statistical comparisons were carried out according to the intention to treat by Student's t-test, Mann-Whitney U test, where appropriate. Receiver operating characteristic curve-ROC was used to represent the sensitivity and specificity pair corresponding to decision threshold of FSH and LH levels in HH diagnosis. P < 0.05 was accepted to be statistically significant. RESULTS There was not any statistically significant difference between HH and control group regarding the age (23.94 ± 6.56 vs. 23.92 ± 3.01, respectively; p = 0.09). Serum AMH levels didn't show statistically significant difference between HH and control group (3.26 ± 2.61 ng/mL vs. 3.15 ± 1.46 ng/mL, respectively; p = 0.11). The difference of AFC between HH and control group was statistically significant (6.67 ± 6.33 vs. 10.91 ± 2.92, respectively; p < 0.001). Follicle-stimulating hormone (FSH), Luteinizing-hormone (LH) and Estradiol (E2) levels between the groups were found to be significantly different. Area under the receiver operating characteristic curve-ROC for FSH was 0.98 and for LH was 0.96. For the diagnosis of HH, FSH levels lower than 3.05 IU/L (with a sensitivity of 92% and specificity of 94%) and LH levels lower than 1.55 IU/L (with a sensitivity of 91% and specificity of 92%) can be used. CONCLUSION In conclusion, serum AMH levels reflect the follicle cohort in HH cases validly with negligible underestimation of ovarian reserve. FSH < 3.05 IU/L and LH < 1.55 IU/L could be used with high sensitivity and specificity for the diagnosis of HH.
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Affiliation(s)
- Mahmut Oncul
- Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Turkey
| | - Ipek Betul Ozcivit
- Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine. Department of Obstetrics and Gynecology, Turkey.
| | - Zafer Basibuyuk
- Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine. Department of Obstetrics and Gynecology, Turkey
| | - Ceren Cebi
- Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine. Department of Obstetrics and Gynecology, Turkey
| | - Sezai Sahmay
- Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Turkey
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Gorsi B, Hernandez E, Moore MB, Moriwaki M, Chow CY, Coelho E, Taylor E, Lu C, Walker A, Touraine P, Nelson LM, Cooper AR, Mardis ER, Rajkovic A, Yandell M, Welt CK. Causal and Candidate Gene Variants in a Large Cohort of Women With Primary Ovarian Insufficiency. J Clin Endocrinol Metab 2022; 107:685-714. [PMID: 34718612 PMCID: PMC9006976 DOI: 10.1210/clinem/dgab775] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT A genetic etiology likely accounts for the majority of unexplained primary ovarian insufficiency (POI). OBJECTIVE We hypothesized that heterozygous rare variants and variants in enhanced categories are associated with POI. DESIGN The study was an observational study. SETTING Subjects were recruited at academic institutions. PATIENTS Subjects from Boston (n = 98), the National Institutes of Health and Washington University (n = 98), Pittsburgh (n = 20), Italy (n = 43), and France (n = 32) were diagnosed with POI (amenorrhea with an elevated follicle-stimulating hormone level). Controls were recruited for health in old age or were from the 1000 Genomes Project (total n = 233). INTERVENTION We performed whole exome sequencing (WES), and data were analyzed using a rare variant scoring method and a Bayes factor-based framework for identifying genes harboring pathogenic variants. We performed functional studies on identified genes that were not previously implicated in POI in a D. melanogaster model. MAIN OUTCOME Genes with rare pathogenic variants and gene sets with increased burden of deleterious variants were identified. RESULTS Candidate heterozygous variants were identified in known genes and genes with functional evidence. Gene sets with increased burden of deleterious alleles included the categories transcription and translation, DNA damage and repair, meiosis and cell division. Variants were found in novel genes from the enhanced categories. Functional evidence supported 7 new risk genes for POI (USP36, VCP, WDR33, PIWIL3, NPM2, LLGL1, and BOD1L1). CONCLUSIONS Candidate causative variants were identified through WES in women with POI. Aggregating clinical data and genetic risk with a categorical approach may expand the genetic architecture of heterozygous rare gene variants causing risk for POI.
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Affiliation(s)
- Bushra Gorsi
- Utah Center for Genetic Discovery, Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Edgar Hernandez
- Utah Center for Genetic Discovery, Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Marvin Barry Moore
- Utah Center for Genetic Discovery, Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Mika Moriwaki
- Division of Endocrinology, Metabolism and Diabetes, University of Utah, Salt Lake City, UT, USA
| | - Clement Y Chow
- Department of Human Genetics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Emily Coelho
- Department of Human Genetics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Elaine Taylor
- University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Claire Lu
- University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Amanda Walker
- University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Philippe Touraine
- Sorbonne Universite, Hôpital Universitaire Pitié Salpêtrière-Charles Foix, Service d’Endocrinologie et Médecine de la Reproduction, Centre de Maladies Endocriniennes Rares de la Croissance et du Développement, Centre de Pathologies Gynécologiques Rares, Paris, France
| | | | | | - Elaine R Mardis
- Institute for Genomic Medicine, Nationwide Children’s Hospital, Ohio State University College of Medicine, Columbus, OH, USA
| | - Aleksander Rajkovic
- Department of Pathology, University of California San Francisco School of Medicine, San Francisco, CA, USA
| | - Mark Yandell
- Utah Center for Genetic Discovery, Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Corrine K Welt
- Division of Endocrinology, Metabolism and Diabetes, University of Utah, Salt Lake City, UT, USA
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Chen X, Chen L, Wang Y, Shu C, Zhou Y, Wu R, Jin B, Yang L, Sun J, Qi M, Shu J. Identification and characterization of novel compound heterozygous variants in FSHR causing primary ovarian insufficiency with resistant ovary syndrome. Front Endocrinol (Lausanne) 2022; 13:1013894. [PMID: 36704038 PMCID: PMC9871476 DOI: 10.3389/fendo.2022.1013894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 12/20/2022] [Indexed: 01/12/2023] Open
Abstract
Primary ovarian insufficiency (POI) is among the foremost causes of women infertility due to premature partial or total loss of ovarian function. Resistant ovary syndrome (ROS) is a subtype of POI manifested as normal ovarian reserve but insensitive to gonadotropin stimulation. Inactivating variants of follicle-stimulating hormone receptor (FSHR), a class A G-protein coupled receptor, have been associated with POI and are inherited via an autosomal recessive pattern. In this study, we investigated the genetic causes of a primary infertility patient manifested as POI with ROS, and elucidated the structural and functional impact of variants of uncertain significance. Next-generation sequencing (NGS) combined with Sanger sequencing revealed novel compound heterozygous FSHR variants: c.1384G>C/p.Ala462Pro and c.1862C>T/p.Ala621Val, inherited from her father and mother, respectively. The two altered amino acid sequences, localized in the third and seventh transmembrane helix of FSHR, were predicted as deleterious by in silico prediction. In vitro experiments revealed that the p.Ala462Pro variant resulted in barely detectable levels of intracellular signaling both in cAMP-dependent CRE-reporter activity and ERK activation and displayed a severely reduced plasma membrane receptor expression. In contrast, the p.Ala621Val variant resulted in partial loss of receptor activation without disruption of cell surface expression. In conclusion, two unreported inactivating FSHR variants potentially responsible for POI with ROS were first identified. This study expands the current phenotypic and genotypic spectrum of POI.
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Affiliation(s)
- Xiaopan Chen
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
- Department of Genetic and Genomic Medicine, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
- *Correspondence: Jing Shu, ; Xiaopan Chen,
| | - Linjie Chen
- School of Laboratory Medicine and Bioengineering, Hangzhou Medical College, Hangzhou, China
| | - Yang Wang
- Department of Genetic and Genomic Medicine, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
- The Second Clinical Medical School of Wenzhou Medical University, Wenzhou, China
| | - Chongyi Shu
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
| | - Yier Zhou
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
| | - Ruifang Wu
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
| | - Bihui Jin
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
| | - Leixiang Yang
- Department of Genetic and Genomic Medicine, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
| | - Junhui Sun
- Reproductive Medicine Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ming Qi
- Department of Cell Biology and Medical Genetics, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jing Shu
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, China
- The Second Clinical Medical School of Wenzhou Medical University, Wenzhou, China
- *Correspondence: Jing Shu, ; Xiaopan Chen,
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Abstract
Primary ovarian insufficiency (POI) is determined by exhaustion of follicles in the ovaries, which leads to infertility before the age of 40 years. It is characterized by a strong familial and heterogeneous genetic background. Therefore, we will mainly discuss the genetic basis of POI in this review. We identified 107 genes related to POI etiology in mammals described by several independent groups. Thirty-four of these genes (AARS2, AIRE, ANTXR1, ATM, BMPR1B, CLPP, CYP17A1, CYP19A1, DCAF17, EIF2B, ERAL1, FANCA, FANCC, FMR1, FOXL2, GALT, GNAS, HARS2, HSD17B4, LARS2, LMNA, MGME1, NBN, PMM2, POLG, PREPL, RCBTB1, RECQL2/3/4, STAR, TWNK, and XRCC4/9) have been linked to syndromic POI and are mainly implicated in metabolism function and meiosis/DNA repair. In addition, the majority of genes associated with nonsyndromic POI, widely expanded by high-throughput techniques over the last decade, have been implicated in ovarian development and meiosis/DNA repair pathways (ATG7, ATG9, ANKRD31, BMP8B, BMP15, BMPR1A, BMPR1B, BMPR2, BNC1, BRCA2, CPEB1, C14ORF39, DAZL, DIAPH2, DMC1, ERCC6, FANCL, FANCM, FIGLA, FSHR, GATA4, GDF9, GJA4, HELQ, HSF2BP, HFM1, INSL3, LHCGR, LHX8, MCM8, MCM9, MEIOB, MSH4, MSH5, NANOS3, NOBOX, NOTCH2, NR5A1, NUP107, PGRMC1, POLR3H, PRDM1, PRDM9, PSMC3IP, SOHLH1, SOHLH2, SPIDR, STAG3, SYCE1, TP63, UBR2, WDR62, and XRCC2), whereas a few are related to metabolic functions (EIF4ENIF1, KHDRBS1, MRPS22, POLR2C). Some genes, such as STRA8, FOXO3A, KIT, KITL, WNT4, and FANCE, have been shown to cause ovarian insufficiency in rodents, but mutations in these genes have yet to be elucidated in women affected by POI. Lastly, some genes have been rarely implicated in its etiology (AMH, AMHR2, ERRC2, ESR1, INHA, LMN4, POF1B, POU5F1, REC8, SMC1B). Considering the heterogeneous genetic and familial background of this disorder, we hope that an overview of literature data would reinforce that genetic screening of those patients is worthwhile and helpful for better genetic counseling and patient management.
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Affiliation(s)
- Monica Malheiros França
- Unidade de Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas, Disciplina de Endocrinologia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil; Section of Endocrinology Diabetes and Metabolism, Department of Medicine, The University of Chicago, Chicago, IL, USA.
| | - Berenice Bilharinho Mendonca
- Unidade de Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas, Disciplina de Endocrinologia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
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13
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Hanyroup S, Anderson RC, Nataraja S, Yu HN, Millar RP, Newton CL. Rescue of Cell Surface Expression and Signaling of Mutant Follicle-Stimulating Hormone Receptors. Endocrinology 2021; 162:6311857. [PMID: 34192304 DOI: 10.1210/endocr/bqab134] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Indexed: 11/19/2022]
Abstract
Mutations in G protein-coupled receptors (GPCRs) underlie numerous diseases. Many cause receptor misfolding and failure to reach the cell surface. Pharmacological chaperones are cell-permeant small molecules that engage nascent mutant GPCRs in the endoplasmic reticulum, stabilizing folding and "rescuing" cell surface expression. We previously demonstrated rescue of cell surface expression of luteinizing hormone receptor mutants by an allosteric agonist. Here we demonstrate that a similar approach can be employed to rescue mutant follicle-stimulating hormone receptors (FSHRs) with poor cell surface expression using a small-molecule FSHR agonist, CAN1404. Seventeen FSHR mutations described in patients with reproductive dysfunction were expressed in HEK 293T cells, and cell surface expression was determined by enzyme-linked immunosorbent assay of epitope-tagged FSHRs before/after treatment with CAN1404. Cell surface expression was severely reduced to ≤18% of wild-type (WT) for 11, modestly reduced to 66% to 84% of WT for 4, and not reduced for 2. Of the 11 with severely reduced cell surface expression, restoration to ≥57% of WT levels was achieved for 6 by treatment with 1 µM CAN1404 for 24 h, and a corresponding increase in FSH-induced signaling was observed for 4 of these, indicating restored functionality. Therefore, CAN1404 acts as a pharmacological chaperone and can rescue cell surface expression and function of certain mutant FSHRs with severely reduced cell surface expression. These findings aid in advancing the understanding of the effects of genetic mutations on GPCR function and provide a proof of therapeutic principle for FSHR pharmacological chaperones.
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Affiliation(s)
- Sharika Hanyroup
- Centre for Neuroendocrinology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Ross C Anderson
- Centre for Neuroendocrinology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | | | | | - Robert P Millar
- Centre for Neuroendocrinology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Integrative Biomedical Sciences, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Deanery of Biomedical Sciences, University of Edinburgh, Edinburgh, UK
- School of Medicine, Medical and Biological Sciences Building, University of St Andrews, St Andrews, UK
| | - Claire L Newton
- Centre for Neuroendocrinology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Deanery of Biomedical Sciences, University of Edinburgh, Edinburgh, UK
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Live birth after in vitro maturation in women with gonadotropin resistance ovary syndrome: report of two cases. J Assist Reprod Genet 2021; 38:3243-3249. [PMID: 34846627 DOI: 10.1007/s10815-021-02355-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 11/10/2021] [Indexed: 10/19/2022] Open
Abstract
PURPOSE Gonadotropin-resistant ovary syndrome (GROS) is a rare endocrine disorder that causes hypergonadotropic hypogonadism, amenorrhea, and infertility. This study reports live birth in two women with GROS who underwent fertility treatment with in vitro maturation (IVM). METHODS Both patients had primary infertility, amenorrhea (primary and secondary), typical secondary sexual characters, elevated gonadotropin levels, normal ovarian reserve, normal chromosomal characteristics, and previous nonresponsiveness gonadotropin stimulations. One patient had polymorphism of the follicle-stimulating hormone receptor, which is a predictor of poor ovarian response. Given unresponsiveness to exogenous gonadotropin stimulations, IVM with human chorionic gonadotropin priming (hCG-IVM) was performed in both patients. All transferrable embryos were vitrified. RESULTS Both patients achieved pregnancy after their first frozen embryos transfer, and each delivered a healthy baby boy. CONCLUSIONS These results suggest that IVM should be a first-line therapeutic option for patients with GROS.
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15
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The Roles of Luteinizing Hormone, Follicle-Stimulating Hormone and Testosterone in Spermatogenesis and Folliculogenesis Revisited. Int J Mol Sci 2021; 22:ijms222312735. [PMID: 34884539 PMCID: PMC8658012 DOI: 10.3390/ijms222312735] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 12/17/2022] Open
Abstract
Spermatogenesis and folliculogenesis involve cell–cell interactions and gene expression orchestrated by luteinizing hormone (LH) and follicle-stimulating hormone (FSH). FSH regulates the proliferation and maturation of germ cells independently and in combination with LH. In humans, the requirement for high intratesticular testosterone (T) concentration in spermatogenesis remains both a dogma and an enigma, as it greatly exceeds the requirement for androgen receptor (AR) activation. Several data have challenged this dogma. Here we report our findings on a man with mutant LH beta subunit (LHβ) that markedly reduced T production to 1–2% of normal., but despite this minimal LH stimulation, T production by scarce mature Leydig cells was sufficient to initiate and maintain complete spermatogenesis. Also, in the LH receptor (LHR) knockout (LuRKO) mice, low-dose T supplementation was able to maintain spermatogenesis. In addition, in antiandrogen-treated LuRKO mice, devoid of T action, the transgenic expression of a constitutively activating follicle stimulating hormone receptor (FSHR) mutant was able to rescue spermatogenesis and fertility. Based on rodent models, it is believed that gonadotropin-dependent follicular growth begins at the antral stage, but models of FSHR inactivation in women contradict this claim. The complete loss of FSHR function results in the complete early blockage of folliculogenesis at the primary stage, with a high density of follicles of the prepubertal type. These results should prompt the reassessment of the role of gonadotropins in spermatogenesis, folliculogenesis and therapeutic applications in human hypogonadism and infertility.
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Activated Human Umbilical Cord Blood Platelet-Rich Plasma Enhances the Beneficial Effects of Human Umbilical Cord Mesenchymal Stem Cells in Chemotherapy-Induced POF Rats. Stem Cells Int 2021; 2021:8293699. [PMID: 34733331 PMCID: PMC8560297 DOI: 10.1155/2021/8293699] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 08/29/2021] [Accepted: 09/20/2021] [Indexed: 12/29/2022] Open
Abstract
Saving the ovarian function of premature ovarian failure (POF) patients undergoing chemotherapy is an important problem in the field of reproductive medicine. At present, human umbilical cord mesenchymal stem cells (HucMSCs) have been used in the treatment of POF, but the effect is still not optimal. The purpose of this study was to determine whether human umbilical cord blood platelet-rich plasma (ucPRP) enhances the beneficial effects of HucMSCs in the treatment of POF. First, we observed the effects of changes in the biological activity of ucPRP on HucMSCs in vitro. Subsequently, we tracked the distribution and function of the HucMSCs in POF rats, and the rats' estrus cycle and serum sex hormones, follicular development, ovarian angiogenesis, ovarian granulosa cell proliferation, and apoptosis were assessed. The results of the study showed that the addition of ucPRP in vitro accelerates proliferation and reduces apoptosis of the HucMSCs while upregulating the stemness gene of the HucMSCs. The combined transplantation of HucMSCs and ucPRP resulted in more stem cells being retained in the ovaries of POF rats, the estrus cycle of the POF rats being restored, the levels of serum E2, AMH, and FSH improving, and damaged follicles beginning to grow. Finally, we confirmed that the potential mechanism of the combination of HucMSCs and ucPRP to rescue the ovarian function of POF rats is to promote ovarian angiogenesis and to promote the proliferation and reduce the apoptosis of ovarian granulosa cells. The upregulation of AMH and FHSR expression and the downregulation of caspase-3 expression in granulosa cells are potential mechanisms for the recovery of ovarian function. Our research results suggest that the combined application of HucMSCs and ucPRP is a safe and efficient transplantation program for the treatment of POF, thus providing a reliable experimental basis for the clinical application of stem cell therapy in POF.
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Recchia K, Jorge AS, Pessôa LVDF, Botigelli RC, Zugaib VC, de Souza AF, Martins DDS, Ambrósio CE, Bressan FF, Pieri NCG. Actions and Roles of FSH in Germinative Cells. Int J Mol Sci 2021; 22:10110. [PMID: 34576272 PMCID: PMC8470522 DOI: 10.3390/ijms221810110] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 12/21/2022] Open
Abstract
Follicle stimulating hormone (FSH) is produced by the pituitary gland in a coordinated hypothalamic-pituitary-gonadal (HPG) axis event, plays important roles in reproduction and germ cell development during different phases of reproductive development (fetal, neonatal, puberty, and adult life), and is consequently essential for fertility. FSH is a heterodimeric glycoprotein hormone of two dissociable subunits, α and β. The FSH β-subunit (FSHβ) function starts upon coupling to its specific receptor: follicle-stimulating hormone receptor (FSHR). FSHRs are localized mainly on the surface of target cells on the testis and ovary (granulosa and Sertoli cells) and have recently been found in testicular stem cells and extra-gonadal tissue. Several reproduction disorders are associated with absent or low FSH secretion, with mutation of the FSH β-subunit or the FSH receptor, and/or its signaling pathways. However, the influence of FSH on germ cells is still poorly understood; some studies have suggested that this hormone also plays a determinant role in the self-renewal of germinative cells and acts to increase undifferentiated spermatogonia proliferation. In addition, in vitro, together with other factors, it assists the process of differentiation of primordial germ cells (PGCLCs) into gametes (oocyte-like and SSCLCs). In this review, we describe relevant research on the influence of FSH on spermatogenesis and folliculogenesis, mainly in the germ cell of humans and other species. The possible roles of FSH in germ cell generation in vitro are also presented.
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Affiliation(s)
- Kaiana Recchia
- Department of Surgery, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 01001-010, Brazil; (K.R.); (F.F.B.)
| | - Amanda Soares Jorge
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga 13635-900, Brazil; (A.S.J.); (L.V.d.F.P.); (R.C.B.); (V.C.Z.); (D.d.S.M.); (C.E.A.)
| | - Laís Vicari de Figueiredo Pessôa
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga 13635-900, Brazil; (A.S.J.); (L.V.d.F.P.); (R.C.B.); (V.C.Z.); (D.d.S.M.); (C.E.A.)
| | - Ramon Cesar Botigelli
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga 13635-900, Brazil; (A.S.J.); (L.V.d.F.P.); (R.C.B.); (V.C.Z.); (D.d.S.M.); (C.E.A.)
- Department of Pharmacology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-970, Brazil
| | - Vanessa Cristiane Zugaib
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga 13635-900, Brazil; (A.S.J.); (L.V.d.F.P.); (R.C.B.); (V.C.Z.); (D.d.S.M.); (C.E.A.)
| | - Aline Fernanda de Souza
- Department Biomedical Science, Ontary Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Daniele dos Santos Martins
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga 13635-900, Brazil; (A.S.J.); (L.V.d.F.P.); (R.C.B.); (V.C.Z.); (D.d.S.M.); (C.E.A.)
| | - Carlos Eduardo Ambrósio
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga 13635-900, Brazil; (A.S.J.); (L.V.d.F.P.); (R.C.B.); (V.C.Z.); (D.d.S.M.); (C.E.A.)
| | - Fabiana Fernandes Bressan
- Department of Surgery, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 01001-010, Brazil; (K.R.); (F.F.B.)
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga 13635-900, Brazil; (A.S.J.); (L.V.d.F.P.); (R.C.B.); (V.C.Z.); (D.d.S.M.); (C.E.A.)
| | - Naira Caroline Godoy Pieri
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga 13635-900, Brazil; (A.S.J.); (L.V.d.F.P.); (R.C.B.); (V.C.Z.); (D.d.S.M.); (C.E.A.)
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Byambaragchaa M, Ahn TY, Choi SH, Kang MH, Min KS. Functional characterization of naturally-occurring constitutively activating/inactivating mutations in equine follicle-stimulating hormone receptor (eFSHR). Anim Biosci 2021; 35:399-409. [PMID: 34474536 PMCID: PMC8902225 DOI: 10.5713/ab.21.0246] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/12/2021] [Indexed: 11/27/2022] Open
Abstract
Objective Follicle-stimulating hormone (FSH) is the central hormone involved in mammalian reproduction, maturation at puberty, and gamete production that mediates its function by control of follicle growth and function. The present study investigated the mutations involved in the regulation of FSH receptor (FSHR) activation. Methods We analyzed seven naturally-occurring mutations that were previously reported in human FSHR (hFSHR), in the context of equine FSHR (eFSHR); these include one constitutively activation variant, one allelic variant, and five inactivating variants. These mutations were introduced into wild-type eFSHR (eFSHR-wt) sequence to generate mutants that were designated as eFSHR-D566G, -A306T, -A189V, -N191I, -R572C, -A574V, and -R633H. Mutants were transfected into PathHunter EA-parental CHO-K1 cells expressing β-arrestin. The biological function of mutants was analyzed by quantitating cAMP accumulation in cells incubated with increasing concentrations of FSH. Results Cells expressing eFSHR-D566G exhibited an 8.6-fold increase in basal cAMP response, as compared to that in eFSHR-wt. The allelic variation mutant eFSHR-A306T was not found to affect the basal cAMP response or EC50 levels. On the other hand, eFSHR-D566G and eFSHR-A306T displayed a 1.5- and 1.4-fold increase in the maximal response, respectively. Signal transduction was found to be completely impaired in case of the inactivating mutants eFSHR-A189V, -R572C, and -A574V. When compared with eFSHR-wt, eFSHR-N191I displayed a 5.4-fold decrease in the EC50 levels (3910 ng/mL) and a 2.3-fold decrease in the maximal response. In contrast, cells expressing eFSHR-R633H displayed in a similar manner to that of the cells expressing the eFSHR-wt on signal transduction and maximal response. Conclusion The activating mutant eFSHR-D566G greatly enhanced the signal transduction in response to FSH, in the absence of agonist treatment. We suggest that the state of activation of the eFSHR can modulate its basal cAMP accumulation.
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Affiliation(s)
- Munkhzaya Byambaragchaa
- Animal Biotechnology, Graduate School of Future Convergence Technology, Hankyong National University, Ansung 17579, Korea
| | - Tae-Young Ahn
- Animal Biotechnology, Graduate School of Future Convergence Technology, Hankyong National University, Ansung 17579, Korea
| | - Seung-Hee Choi
- Animal Biotechnology, Graduate School of Future Convergence Technology, Hankyong National University, Ansung 17579, Korea
| | - Myung-Hwa Kang
- Department of Food Science and Nutrition, Hoseo University, Asan 31499, Korea
| | - Kwan-Sik Min
- Animal Biotechnology, Graduate School of Future Convergence Technology, Hankyong National University, Ansung 17579, Korea.,School of Animal Life Convergence Science, Institute of Genetic Engineering, Hankyong National University, Ansung 17579, Korea
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Benammar A, Fanchin R, Filali-Baba M, Vialard F, Fossard C, Vandame J, Pirtea P, Racowsky C, Ayoubi JM, Poulain M. Utilization of in vitro maturation in cases with a FSH receptor mutation. J Assist Reprod Genet 2021; 38:1311-1321. [PMID: 34089127 DOI: 10.1007/s10815-021-02249-3] [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: 04/22/2021] [Accepted: 05/26/2021] [Indexed: 10/21/2022] Open
Abstract
PURPOSE To identify the FSH receptor (FSHR) variant and efficacy of in vitro maturation (IVM) in a 28-year-old woman with secondary amenorrhea, primary infertility, and ovarian resistance to FSH, and to analyze the genotype-to-phenotype relationship in cases of FSHR mutation for the development of an IVM algorithm for use in patients with gonadotropin resistance syndrome (GRS). METHODS Oocytes retrieved after menstruation induction with norethisterone, followed by daily estrogen and an ovulatory trigger, underwent IVM, ICSI, and culture in a time-lapse (TL) incubator. Embryo transfers were performed on day 2, and after thawing on day 5. Genes associated with disorders of sex development were sequenced for both the patient and her parents. All reported cases of FSHR mutation were analyzed to investigate genotype/phenotypic relationships. RESULTS After ovum pickup, seven of 16 oocytes matured and all fertilized. After unsuccessful day 2 transfer, our patient delivered with a thawed day 5 blastocyst, the sole embryo without abnormal TL phenotypes. Genetic analysis revealed a new composite heterozygous FSHR variant. Analysis of our patient case with published cases of GRS revealed associations among FSHR variant genotype, location on the FSHR, functionality of tested variants, and type of amenorrhea. An algorithm for application of IVM for GRS patients was developed. CONCLUSIONS We report two novel variants of the FSHR. Although IVM successfully matured some oocytes, only one resulted in an embryo with normal TL phenotypes. We recommend FSHR genetic testing in GRS patients, which will help guide their suitability for IVM.
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Affiliation(s)
- Achraf Benammar
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France.
| | - Renato Fanchin
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France
| | - Meryem Filali-Baba
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France
| | - François Vialard
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France.,Genetics Federation, CHI de Poissy St Germain en Laye, 78303, Poissy, France
| | - Camille Fossard
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France
| | - Jessica Vandame
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France
| | - Paul Pirtea
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France
| | - Catherine Racowsky
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France
| | - Jean-Marc Ayoubi
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France.,Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
| | - Marine Poulain
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hospital Foch, 92150, Suresnes, France.,Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France
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20
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Zariñán T, Mayorga J, Jardón-Valadez E, Gutiérrez-Sagal R, Maravillas-Montero JL, Mejía-Domínguez NR, Martínez-Luis I, Yacini-Torres OG, Cravioto MDC, Reiter E, Ulloa-Aguirre A. A Novel Mutation in the FSH Receptor (I423T) Affecting Receptor Activation and Leading to Primary Ovarian Failure. J Clin Endocrinol Metab 2021; 106:e534-e550. [PMID: 33119067 DOI: 10.1210/clinem/dgaa782] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Indexed: 12/13/2022]
Abstract
CONTEXT Follicle-stimulating hormone (FSH) plays an essential role in gonadal function. Loss-of-function mutations in the follicle-stimulating hormone receptor (FSHR) are an infrequent cause of primary ovarian failure. OBJECTIVE To analyze the molecular physiopathogenesis of a novel mutation in the FSHR identified in a woman with primary ovarian failure, employing in vitro and in silico approaches, and to compare the features of this dysfunctional receptor with those shown by the trafficking-defective D408Y FSHR mutant. METHODS Sanger sequencing of the FSHR cDNA was applied to identify the novel mutation. FSH-stimulated cyclic adenosine monophosphate (cAMP) production, ERK1/2 phosphorylation, and desensitization were tested in HEK293 cells. Receptor expression was analyzed by immunoblotting, receptor-binding assays, and flow cytometry. Molecular dynamics simulations were performed to determine the in silico behavior of the mutant FSHRs. RESULTS A novel missense mutation (I423T) in the second transmembrane domain of the FSHR was identified in a woman with normal pubertal development but primary amenorrhea. The I423T mutation slightly impaired plasma membrane expression of the mature form of the receptor and severely impacted on cAMP/protein kinase A signaling but much less on β-arrestin-dependent ERK1/2 phosphorylation. Meanwhile, the D408Y mutation severely affected membrane expression, with most of the FSH receptor located intracellularly, and both signal readouts tested. Molecular dynamics simulations revealed important functional disruptions in both mutant FSHRs, mainly the loss of interhelical connectivity in the D408Y FSHR. CONCLUSIONS Concurrently, these data indicate that conformational differences during the inactive and active states account for the distinct expression levels, differential signaling, and phenotypic expression of the I423T and D408Y mutant FSHRs.
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Affiliation(s)
- Teresa Zariñán
- Red de Apoyo a la Investigación, National University of Mexico-Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Julio Mayorga
- Department of Reproductive Biology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Eduardo Jardón-Valadez
- Departamento de Recursos de la Tierra, Universidad Autónoma Metropolitana, Unidad Lerma, Lerma, Edo. de Mexico, Mexico
| | - Rubén Gutiérrez-Sagal
- Red de Apoyo a la Investigación, National University of Mexico-Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - José Luis Maravillas-Montero
- Red de Apoyo a la Investigación, National University of Mexico-Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Nancy R Mejía-Domínguez
- Red de Apoyo a la Investigación, National University of Mexico-Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Iván Martínez-Luis
- Red de Apoyo a la Investigación, National University of Mexico-Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Omar G Yacini-Torres
- Red de Apoyo a la Investigación, National University of Mexico-Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Ma-Del-Carmen Cravioto
- Department of Reproductive Biology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Eric Reiter
- Physiologie de la Reproduction et des Comportements (PRC), Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (INRAE), Centre National de la Recherche Scientifique (CNRS), Université de Tours, Tours, France
| | - Alfredo Ulloa-Aguirre
- Red de Apoyo a la Investigación, National University of Mexico-Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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Jaillard S, Bell K, Akloul L, Walton K, McElreavy K, Stocker WA, Beaumont M, Harrisson C, Jääskeläinen T, Palvimo JJ, Robevska G, Launay E, Satié AP, Listyasari N, Bendavid C, Sreenivasan R, Duros S, van den Bergen J, Henry C, Domin-Bernhard M, Cornevin L, Dejucq-Rainsford N, Belaud-Rotureau MA, Odent S, Ayers KL, Ravel C, Tucker EJ, Sinclair AH. New insights into the genetic basis of premature ovarian insufficiency: Novel causative variants and candidate genes revealed by genomic sequencing. Maturitas 2020; 141:9-19. [PMID: 33036707 DOI: 10.1016/j.maturitas.2020.06.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 05/12/2020] [Accepted: 06/07/2020] [Indexed: 11/20/2022]
Abstract
Ovarian deficiency, including premature ovarian insufficiency (POI) and diminished ovarian reserve (DOR), represents one of the main causes of female infertility. POI is a genetically heterogeneous condition but current understanding of its genetic basis is far from complete, with the cause remaining unknown in the majority of patients. The genes that regulate DOR have been reported but the genetic basis of DOR has not been explored in depth. Both conditions are likely to lie along a continuum of degrees of decrease in ovarian reserve. We performed genomic analysis via whole exome sequencing (WES) followed by in silico analyses and functional experiments to investigate the genetic cause of ovarian deficiency in ten affected women. We achieved diagnoses for three of them, including the identification of novel variants in STAG3, GDF9, and FANCM. We identified potentially causative FSHR variants in another patient. This is the second report of biallelic GDF9 and FANCM variants, and, combined with functional support, validates these genes as bone fide autosomal recessive "POI genes". We also identified new candidate genes, NRIP1, XPO1, and MACF1. These genes have been linked to ovarian function in mouse, pig, and zebrafish respectively, but never in humans. In the case of NRIP1, we provide functional support for the deleterious nature of the variant via SUMOylation and luciferase/β-galactosidase reporter assays. Our study provides multiple insights into the genetic basis of POI/DOR. We have further elucidated the involvement of GDF9, FANCM, STAG3 and FSHR in POI pathogenesis, and propose new candidate genes, NRIP1, XPO1, and MACF1, which should be the focus of future studies.
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Affiliation(s)
- Sylvie Jaillard
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000, Rennes, France; CHU Rennes, Service de Cytogénétique et Biologie Cellulaire, F-35033, Rennes, France; Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia.
| | - Katrina Bell
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia
| | - Linda Akloul
- CHU Rennes, Service de Génétique Clinique, CLAD Ouest, F-35033, Rennes, France
| | - Kelly Walton
- Department of Physiology, Monash Biomedicine Discovery Institute, Monash University, VIC, 3800, Australia
| | | | - William A Stocker
- Department of Physiology, Monash Biomedicine Discovery Institute, Monash University, VIC, 3800, Australia; Department of Chemistry and Biotechnology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Marion Beaumont
- CHU Rennes, Service de Cytogénétique et Biologie Cellulaire, F-35033, Rennes, France
| | - Craig Harrisson
- Department of Physiology, Monash Biomedicine Discovery Institute, Monash University, VIC, 3800, Australia
| | - Tiina Jääskeläinen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, FI-70211 Kuopio, Finland
| | - Jorma J Palvimo
- Institute of Biomedicine, University of Eastern Finland, Kuopio, FI-70211 Kuopio, Finland
| | - Gorjana Robevska
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia
| | - Erika Launay
- CHU Rennes, Service de Cytogénétique et Biologie Cellulaire, F-35033, Rennes, France
| | - Anne-Pascale Satié
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000, Rennes, France
| | - Nurin Listyasari
- Doctoral Program of Medical and Health Sciences, Faculty of Medicine, Diponegoro University, Semarang, Indonesia
| | - Claude Bendavid
- INRAE, INSERM, Univ Rennes, Institut NuMeCan, Rennes, Saint-Gilles, France; CHU Rennes, Laboratoire de Biochimie et Toxicologie, F-35033, Rennes, France
| | - Rajini Sreenivasan
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia
| | - Solène Duros
- CHU Rennes, Département de Gynécologie Obstétrique et Reproduction Humaine, F-35033, Rennes, France
| | - Jocelyn van den Bergen
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia
| | - Catherine Henry
- CHU Rennes, Service de Cytogénétique et Biologie Cellulaire, F-35033, Rennes, France
| | - Mathilde Domin-Bernhard
- CHU Rennes, Département de Gynécologie Obstétrique et Reproduction Humaine, F-35033, Rennes, France
| | - Laurence Cornevin
- CHU Rennes, Service de Cytogénétique et Biologie Cellulaire, F-35033, Rennes, France
| | - Nathalie Dejucq-Rainsford
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000, Rennes, France
| | - Marc-Antoine Belaud-Rotureau
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000, Rennes, France; CHU Rennes, Service de Cytogénétique et Biologie Cellulaire, F-35033, Rennes, France; CHU Rennes, Service de Biologie de la Reproduction-CECOS, F-35033, Rennes, France
| | - Sylvie Odent
- CHU Rennes, Service de Génétique Clinique, CLAD Ouest, F-35033, Rennes, France; Univ Rennes, CNRS UMR 6290, Institut de Génétique et Développement, F-35000, Rennes, France
| | - Katie L Ayers
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia; Department of Paediatrics, University of Melbourne, Melbourne, VIC, 3052, Australia
| | - Célia Ravel
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000, Rennes, France; CHU Rennes, Service de Biologie de la Reproduction-CECOS, F-35033, Rennes, France
| | - Elena J Tucker
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia; Department of Paediatrics, University of Melbourne, Melbourne, VIC, 3052, Australia.
| | - Andrew H Sinclair
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia; Department of Paediatrics, University of Melbourne, Melbourne, VIC, 3052, Australia
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22
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Constitutive Activation and Inactivation of Mutations Inducing Cell Surface Loss of Receptor and Impairing of Signal Transduction of Agonist-Stimulated Eel Follicle-Stimulating Hormone Receptor. Int J Mol Sci 2020; 21:ijms21197075. [PMID: 32992880 PMCID: PMC7583038 DOI: 10.3390/ijms21197075] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 09/23/2020] [Accepted: 09/23/2020] [Indexed: 12/17/2022] Open
Abstract
In the present study, we investigated the signal transduction of mutants of the eel follicle-stimulating hormone receptor (eelFSHR). Specifically, we examined the constitutively activating mutant D540G in the third intracellular loop, and four inactivating mutants (A193V, N195I, R546C, and A548V). To directly assess functional effects, we conducted site-directed mutagenesis to generate mutant receptors. We measured cyclic adenosine monophosphate (cAMP) accumulation via homogeneous time-resolved fluorescence assays in Chinese hamster ovary (CHO-K1) cells and investigated cell surface receptor loss using an enzyme-linked immunosorbent assay in human embryonic kidney (HEK) 293 cells. The cells expressing eelFSHR-D540G exhibited a 23-fold increase in the basal cAMP response without agonist treatment. The cells expressing A193V, N195I, and A548V mutants had completely impaired signal transduction, whereas those expressing the R546C mutant exhibited little increase in cAMP responsiveness and a small increase in signal transduction. Cell surface receptor loss in the cells expressing inactivating mutants A193V, R546C, and A548V was clearly slower than in the cell expressing the wild-type eelFSHR. However, cell surface receptor loss in the cells expressing inactivating mutant N195I decreased in a similar manner to that of the cells expressing the wild-type eelFSHR or the activating mutant D540G, despite the completely impaired cAMP response. These results provide important information regarding the structure–function relationships of G protein-coupled receptors during signal transduction.
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23
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Sassi A, Désir J, Janssens V, Marangoni M, Daneels D, Gheldof A, Bonduelle M, Van Dooren S, Costagliola S, Delbaere A. Novel inactivating follicle-stimulating hormone receptor mutations in a patient with premature ovarian insufficiency identified by next-generation sequencing gene panel analysis. F S Rep 2020; 1:193-201. [PMID: 34223243 PMCID: PMC8244262 DOI: 10.1016/j.xfre.2020.08.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 08/11/2020] [Accepted: 08/20/2020] [Indexed: 01/05/2023] Open
Abstract
Objective To find the genetic etiology of premature ovarian insufficiency (POI) in a patient with primary amenorrhea and hypergonadotropic hypogonadism. Design Case report. Setting University hospital. Patient(s) A Belgian woman aged 32 years with POI at the age of 17, her parents, and her sister whose POI was diagnosed at age 29. Intervention(s) Analysis of a panel of 31 genes implicated in POI (POIGP) using next-generation sequencing (NGS), Sanger sequencing, and in vitro functional study. Main Outcome Measure(s) Gene variants, family mutational segregation, and in vitro functional impact of the mutant proteins. Result(s) The analysis of the gene panel using NGS identified the presence of two novel follicle-stimulating hormone receptor (FSHR) missense mutations at a compound heterozygous state in the affected patient: c.646 G>A, p.Gly216Arg, and c.1313C>T, p.Thr438Ile. Sanger sequencing showed the presence of each mutation at heterozygous state in the patient’s parents and at heterozygous compound state in the affected sister. Both substituted amino acids (Gly216 and Thr438) were conserved in FSHR of several vertebrate species as well as in other glycoproteins receptors (TSHR and LHCGHR), suggesting a potentially important role in glycoprotein receptor function. An in vitro functional study showed similar results for both variants with more than 90% reduction of their cell surface expression and a 55% reduction of their FSH-induced cyclic adenosine 3′:5′ monophosphate (cAMP) production compared with the wild-type FSHR. Conclusion(s) The analysis of a gene panel of 31 genes implicated in POI allowed us to identify two novel partially inactivating mutations of FSHR that are likely responsible for the POI phenotype of the proband and of her affected sister.
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Affiliation(s)
- Asma Sassi
- Fertility Clinic, Department of Gynecology and Obstetrics, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Julie Désir
- Department of Genetics, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Véronique Janssens
- IRIBHM, Institute of Interdisciplinary Research in Human and Molecular Biology, Université Libre de Bruxelles, Brussels, Belgium
| | - Martina Marangoni
- Department of Genetics, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Dorien Daneels
- Brussels Interuniversity Genomics High Throughput Core (Bright Core), Brussels, Belgium.,Centre for Medical Genetics, Reproduction and Genetics and Regenerative Medicine Research Cluster, Reproduction and Genetics Research Group, Vrije Universiteit Brussel-UZ Brussel, Brussels, Belgium
| | - Alexander Gheldof
- Centre for Medical Genetics, Reproduction and Genetics and Regenerative Medicine Research Cluster, Reproduction and Genetics Research Group, Vrije Universiteit Brussel-UZ Brussel, Brussels, Belgium
| | - Maryse Bonduelle
- Brussels Interuniversity Genomics High Throughput Core (Bright Core), Brussels, Belgium.,Centre for Medical Genetics, Reproduction and Genetics and Regenerative Medicine Research Cluster, Reproduction and Genetics Research Group, Vrije Universiteit Brussel-UZ Brussel, Brussels, Belgium
| | - Sonia Van Dooren
- Brussels Interuniversity Genomics High Throughput Core (Bright Core), Brussels, Belgium.,Centre for Medical Genetics, Reproduction and Genetics and Regenerative Medicine Research Cluster, Reproduction and Genetics Research Group, Vrije Universiteit Brussel-UZ Brussel, Brussels, Belgium
| | - Sabine Costagliola
- IRIBHM, Institute of Interdisciplinary Research in Human and Molecular Biology, Université Libre de Bruxelles, Brussels, Belgium
| | - Anne Delbaere
- Fertility Clinic, Department of Gynecology and Obstetrics, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
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24
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Khor S, Lyu Q, Kuang Y, Lu X. Novel FSHR variants causing female resistant ovary syndrome. Mol Genet Genomic Med 2019; 8:e1082. [PMID: 31830376 PMCID: PMC7005632 DOI: 10.1002/mgg3.1082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 10/16/2019] [Accepted: 11/02/2019] [Indexed: 11/18/2022] Open
Abstract
Background Pathogenic variants of follicle‐stimulating hormone receptor (FSHR) are known to cause amenorrhea and infertility in women. However, only a limited number of pathogenic FSHR variants have been reported, and few reports described detailed characteristics of patients with pathogenic FSHR variants. Methods The affected siblings and both parents were subjected to whole‐genome exon sequencing. Transient transfection of HEK 293T cells was performed with constructed vectors. The cellular localization of the FSHR protein was evaluated using confocal microscopy, and cyclic adenosine monophosphate (cAMP) production was detected with a cAMP ELISA kit. Results A Chinese family with two siblings carrying compound heterozygous pathogenic variants of FSHR: c.182T>A (p.Ile61Asn) and c.2062C>A (p.Pro688Thr). Both siblings had amenorrhea, infertility, and resistance to gonadotropin (Gn) stimulation but showed high anti‐Müllerian hormone levels and early antral follicles. Molecular dynamics simulations of the FSHR variants revealed significant changes in structural characteristics and electrostatic potential. In vitro analysis indicated that the p.Ile61Asn variant lacked cell surface localization and completely abolished the cAMP second messenger response. The p.Pro688Thr variant retained cell surface localization but caused decreased FSH‐induced cAMP production. Conclusion We found two novel pathogenic FSHR variants causing resistant ovarian syndrome. This study expands the genotypic spectrum of pathogenic FSHR variants and our knowledge of phenotype–genotype correlations.
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Affiliation(s)
- Shuzin Khor
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qifeng Lyu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yanping Kuang
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xuefeng Lu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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25
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Zi XD, Hu L, Lu JY, Liu S, Zheng YC. Comparison of the sequences and expression levels of genes related to follicular development and atresia between prolific and nonprolific goat breeds. Vet Med Sci 2019; 6:187-195. [PMID: 31782269 PMCID: PMC7196674 DOI: 10.1002/vms3.225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 10/01/2019] [Accepted: 11/03/2019] [Indexed: 12/17/2022] Open
Abstract
This study investigated the variations of the nucleotide sequences and ovarian expression levels of genes related to follicular development and atresia in prolific Jintang black goats and nonprolific Tibetan goats. Eight genes, FSHB, LHB, FSHR, LHCGR, ESR2, B4GANT2, BCL2 and BAX, were examined using reverse transcription‐polymerase chain reaction and quantitative real‐time PCR. The results showed that the nucleotide and deduced amino acid sequences of the LHB and BAX genes were not different, but there was one base change in the FSHR genes between the two breeds. There was one base change in the FSHB gene, which resulted in one amino acid substitution; there were nine base changes in the LHCGR gene, which resulted in five amino acid substitutions; and there were six base changes in the B4GANT2 gene, which resulted in four amino acid substitutions. The expression levels of the FSHR, LHCGR, ESR2, B4GANT2, BCL2 and BAX genes in the ovaries were not different between the two breeds. The plasma concentrations of FSH were not different, but the plasma concentrations of LH, P4 and E2 were lower in prolific Jintang black goats than in nonprolific Tibetan goats (P ˂ 0.05) at 40 hr after removal of the Controlled Internal Drug Release Devices. These results provide some foundations elucidating the endocrine and molecular mechanisms controlling ovulation rate in goats, but these need to be further verified.
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Affiliation(s)
- Xiang-Dong Zi
- Key-Laboratory for Animal Science of State Ethnic Affairs Commission, Southwest Minzu University, Chengdu, China.,Key Laboratory of Conservation & Utilization of Qinghai-Tibetan Plateau Animal Genetic Resources of Ministry of Education, Southwest Minzu University, Chengdu, China
| | - Liang Hu
- Key-Laboratory for Animal Science of State Ethnic Affairs Commission, Southwest Minzu University, Chengdu, China
| | - Jian-Yuan Lu
- Key-Laboratory for Animal Science of State Ethnic Affairs Commission, Southwest Minzu University, Chengdu, China
| | - Shuang Liu
- Key-Laboratory for Animal Science of State Ethnic Affairs Commission, Southwest Minzu University, Chengdu, China
| | - Yu-Cai Zheng
- Key Laboratory of Conservation & Utilization of Qinghai-Tibetan Plateau Animal Genetic Resources of Ministry of Education, Southwest Minzu University, Chengdu, China
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26
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Matsushima N, Takatsuka S, Miyashita H, Kretsinger RH. Leucine Rich Repeat Proteins: Sequences, Mutations, Structures and Diseases. Protein Pept Lett 2019; 26:108-131. [PMID: 30526451 DOI: 10.2174/0929866526666181208170027] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/26/2018] [Accepted: 11/26/2018] [Indexed: 12/18/2022]
Abstract
Mutations in the genes encoding Leucine Rich Repeat (LRR) containing proteins are associated with over sixty human diseases; these include high myopia, mitochondrial encephalomyopathy, and Crohn's disease. These mutations occur frequently within the LRR domains and within the regions that shield the hydrophobic core of the LRR domain. The amino acid sequences of fifty-five LRR proteins have been published. They include Nod-Like Receptors (NLRs) such as NLRP1, NLRP3, NLRP14, and Nod-2, Small Leucine Rich Repeat Proteoglycans (SLRPs) such as keratocan, lumican, fibromodulin, PRELP, biglycan, and nyctalopin, and F-box/LRR-repeat proteins such as FBXL2, FBXL4, and FBXL12. For example, 363 missense mutations have been identified. Replacement of arginine, proline, or cysteine by another amino acid, or the reverse, is frequently observed. The diverse effects of the mutations are discussed based on the known structures of LRR proteins. These mutations influence protein folding, aggregation, oligomerization, stability, protein-ligand interactions, disulfide bond formation, and glycosylation. Most of the mutations cause loss of function and a few, gain of function.
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Affiliation(s)
- Norio Matsushima
- Center for Medical Education, Sapporo Medical University, Sapporo 060-8556, Japan.,Institute of Tandem Repeats, Noboribetsu 059-0464, Japan
| | - Shintaro Takatsuka
- Center for Medical Education, Sapporo Medical University, Sapporo 060-8556, Japan
| | - Hiroki Miyashita
- Institute of Tandem Repeats, Noboribetsu 059-0464, Japan.,Hokubu Rinsho Co., Ltd, Sapporo 060-0061, Japan
| | - Robert H Kretsinger
- Department of Biology, University of Virginia, Charlottesville, VA 22904, United States
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27
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Hsueh AJ, He J. Gonadotropins and their receptors: coevolution, genetic variants, receptor imaging, and functional antagonists. Biol Reprod 2019; 99:3-12. [PMID: 29462242 DOI: 10.1093/biolre/ioy012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 02/06/2018] [Indexed: 12/29/2022] Open
Abstract
Gonadotropins belong to the family of dimeric glycoprotein hormones and regulate gonadal physiology mediated by G protein-coupled, seven-transmembrane receptors. These glycoprotein hormones are widely used in the clinic to promote ovarian follicle development and for treating some cases of male infertility. We traced the coevolution of dimeric gonadotropin hormones and their receptors, together with thyrotropin and its receptor. We updated recent findings on human genetic variants of these genes and their association with dizygotic twining, polycystic ovarian syndrome, primary ovarian insufficiency, male-limited precocious puberty, and infertility. In addition to the known physiological roles of gonadotropin-receptor signaling in gonadal tissues, we also discussed emerging understanding of extragonadal functions of gonadotropins in bones and adipose tissues, together with recent advances in in vivo imaging of gonadotropin receptors in live animals. Recent development of gonadotropin receptor agonists and antagonists were summarized with an emphasis on the development of functional antagonists for FSH receptors to alleviate osteoporosis and obesity associated with menopause.
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Affiliation(s)
- Aaron J Hsueh
- Program of Reproductive and Stem Cell Biology, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California, USA
| | - Jiahuan He
- Program of Reproductive and Stem Cell Biology, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California, USA
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28
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Gharemirshamlu FR, Afsar M, Mokhdomi TA, Amin A, Bukhari S, Krishnan A, Kumar CV, Bamdad K, Patel TN, Qadri RA, Chikan NA, Shabir N. D224V and S128Y mutation in FSHR ED influence thumb movement differentially: An intricate insight gained by short-term molecular dynamics simulation. J Cell Biochem 2019; 120:7701-7710. [PMID: 30390320 DOI: 10.1002/jcb.28044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 10/22/2018] [Indexed: 01/24/2023]
Abstract
Follicle-stimulating hormone-follicle-stimulating hormone receptor (FSH-FSHR) interaction is one of the most thoroughly studied signaling pathways primarily because of being implicated in sexual reproduction in mammals by way of maintaining gonadal function and sexual fertility. Despite material advances in understanding the role of point mutations, their mechanistic basis in FSH-FSHR signaling is still confined to mystically altered behavior of sTYS335 (sulfated tyrosine) yet lacking a substantial theory. To understand the structural basis of receptor modulation, we choose two behaviorally contradicting mutations, namely S128Y (activating) and D224Y (inactivating), found in FSH receptor responsible for ovarian hyperstimulation syndrome and ovarian dysgenesis, respectively. Using short-term molecular dynamics simulations, the atomic scale investigations reveal that the binding pattern of sTYS with FSH and movement of the thumb region of FSHR show distinct contrasting patterns in the two mutants, which supposedly could be a critical factor for differential FSHR behavior in activating and inactivating mutations.
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Affiliation(s)
| | - Maliha Afsar
- Department of Pathology, Osmania General Hospital, Hyderabad, India
| | - Taseem A Mokhdomi
- Division of Animal Health, Computational Lab, Daskdān Biotech Solutions Ltd, Srinagar, India
| | - Asif Amin
- Department of Biotechnology, University of Kashmir, Srinagar, Jammu and Kashmir, India
| | - Shoiab Bukhari
- Division of Animal Health, Computational Lab, Daskdān Biotech Solutions Ltd, Srinagar, India
| | - Anbarasu Krishnan
- Department of Bioinformatics, School of Life Sciences, Vels University, Chennai, India
| | - Chundi Vinay Kumar
- Department of Biological Sciences, Brock University, St. Catharines, Ontario, Canada
| | | | - Trupti N Patel
- Department of Medical Biotechnology, School of Bioscience and Technology, VIT University, Vellore, India
| | - Raies A Qadri
- Department of Biotechnology, University of Kashmir, Srinagar, Jammu and Kashmir, India
| | - Naveed Anjum Chikan
- Division of Animal Health, Computational Lab, Daskdān Biotech Solutions Ltd, Srinagar, India
| | - Nadeem Shabir
- Division of Animal Biotechnology, Faculty of Veterinary Sciences & Animal Husbandry, SKUAST-Kashmir, Shuhama, Srinagar, Jammu and Kashmir, India
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29
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Zhang D, Liu Y, Zhang Z, Lv P, Liu Y, Li J, Wu Y, Zhang R, Huang Y, Xu G, Qian Y, Qian Y, Chen S, Xu C, Shen J, Zhu L, Chen K, Zhu B, Ye X, Mao Y, Bo X, Zhou C, Wang T, Chen D, Yang W, Tan Y, Song Y, Zhou D, Sheng J, Gao H, Zhu Y, Li M, Wu L, He L, Huang H. Basonuclin 1 deficiency is a cause of primary ovarian insufficiency. Hum Mol Genet 2019; 27:3787-3800. [PMID: 30010909 DOI: 10.1093/hmg/ddy261] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 07/09/2018] [Indexed: 12/30/2022] Open
Abstract
Primary ovarian insufficiency (POI) leads to infertility and premature menopause in young women. The genetic etiology of this disorder remains unknown in most patients. Using whole exome sequencing of a large Chinese POI pedigree, we identified a heterozygous 5 bp deletion inducing a frameshift in BNC1, which is predicted to result in a non-sense-mediated decay or a truncated BNC1 protein. Sanger sequencing identified another BNC1 missense mutation in 4 of 82 idiopathic patients with POI, and the mutation was absent in 332 healthy controls. Transfection of recombinant plasmids with the frameshift mutant and separately with the missense mutant in HEK293T cells led to abnormal nuclear localization. Knockdown of BNC1 was found to reduce BMP15 and p-AKT levels and to inhibit meiosis in oocytes. A female mouse model of the human Bnc1 frameshift mutation exhibited infertility, significantly increased serum follicle-stimulating hormone, decreased ovary size and reduced follicle numbers, consistent with POI. We report haploinsufficiency of BNC1 as an etiology of human autosomal dominant POI.
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Affiliation(s)
- Dan Zhang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yifeng Liu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Zhou Zhang
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China.,Institute of Biliary Tract Disease, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pingping Lv
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yun Liu
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jingyi Li
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yiqing Wu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Runjv Zhang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yun Huang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Gufeng Xu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yeqing Qian
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yuli Qian
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Songchang Chen
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Chenming Xu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Jun Shen
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Linling Zhu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Kai Chen
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Bo Zhu
- Department of Clinical Laboratory, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Xiaoqun Ye
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yuchan Mao
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Xingsheng Bo
- Department of Clinical Laboratory, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Caiyun Zhou
- Department of Pathology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Tingting Wang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China.,Vancouver Prostate Center, Department of Urologic Sciences, University of British Columbia, Vancouver, BC Canada V6T, Canada
| | - Dianfu Chen
- Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education and College of Life Sciences, Zhejiang University, Zhejiang, China
| | - Weijun Yang
- Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education and College of Life Sciences, Zhejiang University, Zhejiang, China
| | - Yajing Tan
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yang Song
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Daizhan Zhou
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jianzhong Sheng
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China.,Department of Pathology & Pathophysiology, Zhejiang University School of Medicine, Zhejiang, China
| | - Huijuan Gao
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yimin Zhu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Meigen Li
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Liping Wu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Lin He
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China.,Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Hefeng Huang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Zhejiang, China.,International Peace Maternal and Child Health Hospital, Shanghai Jiao Tong University, Shanghai, China
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He WB, Du J, Yang XW, Li W, Tang WL, Dai C, Chen YZ, Zhang YX, Lu GX, Lin G, Gong F, Tan YQ. Novel inactivating mutations in the FSH receptor cause premature ovarian insufficiency with resistant ovary syndrome. Reprod Biomed Online 2019; 38:397-406. [DOI: 10.1016/j.rbmo.2018.11.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 08/29/2018] [Accepted: 11/29/2018] [Indexed: 02/05/2023]
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Banerjee AA, Mahale SD. Extracellular loop 3 substitutions K589N and A590S in FSH receptor increase FSH-induced receptor internalization and along with S588T substitution exhibit impaired ERK1/2 phosphorylation. Arch Biochem Biophys 2018; 659:57-65. [DOI: 10.1016/j.abb.2018.09.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 09/11/2018] [Accepted: 09/14/2018] [Indexed: 12/30/2022]
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The Role of Gene Therapy in Premature Ovarian Insufficiency Management. Biomedicines 2018; 6:biomedicines6040102. [PMID: 30388808 PMCID: PMC6316312 DOI: 10.3390/biomedicines6040102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 10/23/2018] [Accepted: 10/26/2018] [Indexed: 01/06/2023] Open
Abstract
Premature ovarian insufficiency (POI) is a highly prevalent disorder, characterized by the development of menopause before the age of 40. Most cases are idiopathic; however, in some women the cause of this condition (e.g.; anticancer treatment, genetic disorders, and enzymatic defects) could be identified. Although hormone-replacement therapy, the principal therapeutic approach for POI, helps alleviate the related symptoms, this does not effectively solve the issue of fertility. Assisted reproductive techniques also lack efficacy in these women. Thus, an effective approach to manage patients with POI is highly warranted. Several mechanisms associated with POI have been identified, including the lack of function of the follicle-stimulating hormone (FSH) receptor, alterations in apoptosis control, mutations in Sal-like 4 genes, and thymulin or basonuclin-1 deficiency. The above mentioned may be good targets for gene therapy in order to correct defects leading to POI. The goal of this review is to summarize current experiences on POI studies that employed gene therapy, and to discuss possible future directions in this field.
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Szymańska K, Kałafut J, Rivero-Müller A. The gonadotropin system, lessons from animal models and clinical cases. ACTA ACUST UNITED AC 2018; 70:561-587. [PMID: 30264954 DOI: 10.23736/s0026-4784.18.04307-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review article centers upon family of gonadotropin hormones which consists of two pituitary hormones - follicle-stimulating hormone (FSH) and luteinizing hormone (LH) as well as one non-pituitary hormone - human chorionic gonadotropin (hCG) secreted by placenta, and their receptors. Gonadotropins play an essential role in proper sexual development, puberty, gametogenesis, maintenance of pregnancy and male sexual differentiation during the fetal development. They belong to the family of glycoprotein hormones thus they constitute heterodimeric proteins built of common α subunit and hormone-specific β-subunit. Hitherto, several mutations in genes encoding both gonadotropins and their receptors have been identified in humans. Their occurrence resulted in a number of different phenotypes including delayed puberty, primary amenorrhea, hermaphroditism, infertility and hypogonadism. In order to understand the effects of mutations on the phenotype observed in affected patients, detailed molecular studies are required to map the relationship between the structure and function of gonadotropins and their receptors. Nonetheless, in vitro assays are often insufficient to understand physiology. Therefore, several animal models have been developed to unravel the physiological roles of gonadotropins and their receptors.
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Santi D, Potì F, Simoni M, Casarini L. Pharmacogenetics of G-protein-coupled receptors variants: FSH receptor and infertility treatment. Best Pract Res Clin Endocrinol Metab 2018; 32:189-200. [PMID: 29678285 DOI: 10.1016/j.beem.2018.01.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Infertility treatment may represent a paradigmatic example of precision medicine. Follicle-stimulating hormone (FSH) has been proposed as a valuable therapeutic option both in males and in females, even if a standardized approach is far to be established. To date, several genetic mutations as well as polymorphisms have been demonstrated to significantly affect the pathophysiology of FSH-FSH receptor (FSHR) interaction, although the underlying molecular mechanisms remain unclear. This review aims to highlight possible aspects of FSH therapy that could benefit from a pharmacogenetic approach, providing an up-to-date overview of the variability of the response to FSH treatment in both sexes. Specific sections are dedicated to the clinical use of FSH in infertility and how FSHR polymorphisms may affect the therapeutic endpoints.
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Affiliation(s)
- Daniele Santi
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda Ospedaliero-Universitaria of Modena, Italy.
| | - Francesco Potì
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy
| | - Manuela Simoni
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda Ospedaliero-Universitaria of Modena, Italy
| | - Livio Casarini
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda Ospedaliero-Universitaria of Modena, Italy
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Puttabyatappa M, Padmanabhan V. Developmental Programming of Ovarian Functions and Dysfunctions. VITAMINS AND HORMONES 2018; 107:377-422. [PMID: 29544638 PMCID: PMC6119353 DOI: 10.1016/bs.vh.2018.01.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The pathophysiological mechanisms underlying the origin of several ovarian pathologies remain unclear. In addition to the genetic basis, developmental insults are gaining attention as a basis for the origin of these pathologies. Such early insults include maternal over or under nutrition, stress, and exposure to environmental chemicals. This chapter reviews the development and physiological function of the ovary, the known ovarian pathologies, the developmental check points of ovarian differentiation impacted by developmental insults, the role played by steroidal and metabolic factors as mediaries, the epigenetic mechanisms via which these mediaries induce their effects, and the knowledge gaps for targeting future studies to ultimately aid in the development of improved treatments.
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Ulloa-Aguirre A, Zariñán T, Gutiérrez-Sagal R, Dias JA. Intracellular Trafficking of Gonadotropin Receptors in Health and Disease. Handb Exp Pharmacol 2018; 245:1-39. [PMID: 29063275 DOI: 10.1007/164_2017_49] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Gonadotropin receptors belong to the highly conserved subfamily of the G protein-coupled receptor (GPCR) superfamily, the so-called Rhodopsin-like family (class A), which is the largest class of GPCRs and currently a major drug target. Both the follicle-stimulating hormone receptor (FSHR) and the luteinizing hormone/chorionic gonadotropin hormone receptor (LHCGR) are mainly located in the gonads where they play key functions associated to essential reproductive functions. As any other protein, gonadotropin receptors must be properly folded into a mature tertiary conformation compatible with quaternary assembly and endoplasmic reticulum export to the cell surface plasma membrane. Several primary and secondary structural features, including presence of particular amino acid residues and short motifs and in addition, posttranslational modifications, regulate intracellular trafficking of gonadotropin receptors to the plasma membrane as well as internalization and recycling of the receptor back to the cell surface after activation by agonist. Inactivating mutations of gonadotropin receptors may derive from receptor misfolding and lead to absent or reduced plasma membrane expression of the altered receptor, thereby manifesting an array of phenotypical abnormalities mostly characterized by reproductive failure and/or abnormal or absence of development of secondary sex characteristics. In this chapter we review the structural requirements necessary for intracellular trafficking of the gonadotropin receptors, and describe how mutations in these receptors may lead to receptor misfolding and disease in humans.
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Affiliation(s)
- Alfredo Ulloa-Aguirre
- Red de Apoyo a la Investigación (RAI), Universidad Nacional Autónoma de México-Instituto Nacional de Ciencias Médicas y Nutrición SZ, Vasco de Quiroga 15, Tlalpan, Mexico City, 14000, Mexico.
| | - Teresa Zariñán
- Red de Apoyo a la Investigación (RAI), Universidad Nacional Autónoma de México-Instituto Nacional de Ciencias Médicas y Nutrición SZ, Vasco de Quiroga 15, Tlalpan, Mexico City, 14000, Mexico
| | - Rubén Gutiérrez-Sagal
- Red de Apoyo a la Investigación (RAI), Universidad Nacional Autónoma de México-Instituto Nacional de Ciencias Médicas y Nutrición SZ, Vasco de Quiroga 15, Tlalpan, Mexico City, 14000, Mexico
| | - James A Dias
- Department of Biomedical Sciences, School of Public Health, University at Albany, Albany, NY, USA
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Ulloa-Aguirre A, Zariñán T, Jardón-Valadez E, Gutiérrez-Sagal R, Dias JA. Structure-Function Relationships of the Follicle-Stimulating Hormone Receptor. Front Endocrinol (Lausanne) 2018; 9:707. [PMID: 30555414 PMCID: PMC6281744 DOI: 10.3389/fendo.2018.00707] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 11/09/2018] [Indexed: 12/16/2022] Open
Abstract
The follicle-stimulating hormone receptor (FSHR) plays a crucial role in reproduction. This structurally complex receptor is a member of the G-protein coupled receptor (GPCR) superfamily of membrane receptors. As with the other structurally similar glycoprotein hormone receptors (the thyroid-stimulating hormone and luteinizing hormone-chorionic gonadotropin hormone receptors), the FSHR is characterized by an extensive extracellular domain, where binding to FSH occurs, linked to the signal specificity subdomain or hinge region. This region is involved in ligand-stimulated receptor activation whereas the seven transmembrane domain is associated with receptor activation and transmission of the activation process to the intracellular loops comprised of amino acid sequences, which predicate coupling to effectors, interaction with adapter proteins, and triggering of downstream intracellular signaling. In this review, we describe the most important structural features of the FSHR intimately involved in regulation of FSHR function, including trafficking, dimerization, and oligomerization, ligand binding, agonist-stimulated activation, and signal transduction.
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Affiliation(s)
- Alfredo Ulloa-Aguirre
- Red de Apoyo a la Investigación, Universidad Nacional Autónoma de México and Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
- *Correspondence: Alfredo Ulloa-Aguirre
| | - Teresa Zariñán
- Red de Apoyo a la Investigación, Universidad Nacional Autónoma de México and Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Eduardo Jardón-Valadez
- Departamento de Ciencias Ambientales, Universidad Autónoma Metropolitana Unidad Lerma, Lerma, Mexico
| | - Rubén Gutiérrez-Sagal
- Red de Apoyo a la Investigación, Universidad Nacional Autónoma de México and Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - James A. Dias
- Department of Biomedical Sciences, School of Public Health, University at Albany, Albany, NY, United States
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Abstract
The gonadotropin receptors (luteinising hormone receptor; LHR and follicle-stimulating hormone receptor; FSHR) are G protein-coupled receptors (GPCRs) that play an important role in the endocrine control of reproduction. Thus genetic mutations that cause impaired function of these receptors have been implicated in a number of reproductive disorders. Disease-causing genetic mutations in GPCRs frequently result in intracellular retention and degradation of the nascent protein through misfolding and subsequent recognition by cellular quality control machinery. The discovery and development of novel compounds termed pharmacological chaperones (pharmacoperones) that can stabilise misfolded receptors and restore trafficking and plasma membrane expression are therefore of great interest clinically, and promising in vitro data describing the pharmacoperone rescue of a number of intracellularly retained mutant GPCRs has provided a platform for taking these compounds into in vivo trials. Thienopyrimidine small molecule allosteric gonadotropin receptor agonists (Org 42599 and Org 41841) have been demonstrated to have pharmacoperone activity. These compounds can rescue cell surface expression and in many cases, hormone responsiveness, of a range of retained mutant gonadotropin receptors. Should gonadotropin receptor selectivity of these compounds be improved, they could offer therapeutic benefit to subsets of patients suffering from reproductive disorders attributed to defective gonadotropin receptor trafficking.
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Affiliation(s)
- Claire L Newton
- Centre for Neuroendocrinology and Department of Immunology, Faculty of Health Sciences, University of Pretoria, PO Box 2034, Pretoria, 0001, South Africa.
| | - Ross C Anderson
- Centre for Neuroendocrinology and Department of Immunology, Faculty of Health Sciences, University of Pretoria, PO Box 2034, Pretoria, 0001, South Africa
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Follicle-Stimulating Hormone Receptor: Advances and Remaining Challenges. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2018; 338:1-58. [DOI: 10.1016/bs.ircmb.2018.02.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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A novel homozygous mutation in the FSHR gene is causative for primary ovarian insufficiency. Fertil Steril 2017; 108:1050-1055.e2. [PMID: 29157895 DOI: 10.1016/j.fertnstert.2017.09.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 08/21/2017] [Accepted: 09/07/2017] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To identify the potential FSHR mutation in a Chinese woman with primary ovarian insufficiency (POI). DESIGN Genetic and functional studies. SETTING University-based reproductive medicine center. PATIENT(S) A POI patient, her family members, and another 192 control women with regular menstruation. INTERVENTION(S) Ovarian biopsy was performed in the patient. Sanger sequencing was carried out for the patient, her sister, and parents. The novel variant identified was further confirmed with the use of control subjects. MAIN OUTCOME MEASURE(S) Sanger sequencing and genotype analysis to identify the potential variant of the FSHR gene; hematoxylin and eosin staining of the ovarian section to observe the follicular development; Western blotting and immunofluorescence to detect FSH receptor (FSHR) expression; and cyclic adenosine monophosphate (cAMP) assay to monitor FSH-induced signaling. RESULT(S) Histologic examination of the ovaries in the patient revealed follicular development up to the early antral stage. Mutational screening and genotype analysis of the FSHR gene identified a novel homozygous mutation c.175C>T (p.R59X) in exon 2, which was inherited in the autosomal recessive mode from her heterozygous parents but was absent in her sister and the 192 control women. Functional studies demonstrated that in vitro the nonsense mutation caused the loss of full-length FSHR expression and that p.R59X mutant showed no response to FSH stimulation in the cAMP level. CONCLUSION(S) The mutation p.R59X in FSHR is causative for POI by means of arresting folliculogenesis.
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Banerjee AA, Achrekar SK, Joseph S, Pathak BR, Mahale SD. Functional characterization of two naturally occurring mutations V 221G and T 449N in the follicle stimulating hormone receptor. Mol Cell Endocrinol 2017; 440:69-79. [PMID: 27889471 DOI: 10.1016/j.mce.2016.11.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 12/28/2022]
Abstract
Naturally occurring mutations in follicle stimulating hormone receptor (FSHR) affect the receptor function. Here, we characterized two such previously reported mutations, V221G and T449N, in the extracellular domain and transmembrane helix 3, of FSHR, respectively. Functional studies with the V221G mutant demonstrated an impairment in FSH binding and signaling. Validation of X-ray crystallography data indicating the contribution of FSHR specific residues in the vicinity of V221 to contribute to FSH-FSHR interaction was carried out. In vitro mutational studies showed that these residues are determinants of both FSH binding and FSH induced signaling. Analysis of the T449N mutation revealed that it results in an increase in FSH binding and high cAMP response at lower doses of FSH. A marginal hCG induced and no TSH induced cAMP production was also observed. These findings corroborated with the clinical manifestations of primary amenorrhea (V221G) and spontaneous ovarian hyperstimulation syndrome (T449N) in women harbouring these mutations.
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Affiliation(s)
- Antara A Banerjee
- Division of Structural Biology, National Institute for Research in Reproductive Health (Indian Council of Medical Research), Jehangir Merwanji Street, Parel, Mumbai 400 012, India
| | - Swati K Achrekar
- ICMR Biomedical Informatics Centre, National Institute for Research in Reproductive Health (Indian Council of Medical Research), Jehangir Merwanji Street, Parel, Mumbai 400 012, India
| | - Shaini Joseph
- ICMR Biomedical Informatics Centre, National Institute for Research in Reproductive Health (Indian Council of Medical Research), Jehangir Merwanji Street, Parel, Mumbai 400 012, India
| | - Bhakti R Pathak
- Division of Structural Biology, National Institute for Research in Reproductive Health (Indian Council of Medical Research), Jehangir Merwanji Street, Parel, Mumbai 400 012, India
| | - Smita D Mahale
- Division of Structural Biology, National Institute for Research in Reproductive Health (Indian Council of Medical Research), Jehangir Merwanji Street, Parel, Mumbai 400 012, India; ICMR Biomedical Informatics Centre, National Institute for Research in Reproductive Health (Indian Council of Medical Research), Jehangir Merwanji Street, Parel, Mumbai 400 012, India.
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Núñez Miguel R, Sanders J, Furmaniak J, Smith BR. Structure and activation of the TSH receptor transmembrane domain. AUTOIMMUNITY HIGHLIGHTS 2016; 8:2. [PMID: 27921237 PMCID: PMC5136658 DOI: 10.1007/s13317-016-0090-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 11/23/2016] [Indexed: 12/30/2022]
Abstract
PURPOSE The thyroid-stimulating hormone receptor (TSHR) is the target autoantigen for TSHR-stimulating autoantibodies in Graves' disease. The TSHR is composed of: a leucine-rich repeat domain (LRD), a hinge region or cleavage domain (CD) and a transmembrane domain (TMD). The binding arrangements between the TSHR LRD and the thyroid-stimulating autoantibody M22 or TSH have become available from the crystal structure of the TSHR LRD-M22 complex and a comparative model of the TSHR LRD in complex with TSH, respectively. However, the mechanism by which the TMD of the TSHR and the other glycoprotein hormone receptors (GPHRs) becomes activated is unknown. METHODS We have generated comparative models of the structures of the inactive (TMD_In) and active (TMD_Ac) conformations of the TSHR, follicle-stimulating hormone receptor (FSHR) and luteinizing hormone receptor (LHR) TMDs. The structures of TMD_Ac and TMD_In were obtained using class A GPCR crystal structures for which fully active and inactive conformations were available. RESULTS Most conserved motifs observed in GPCR TMDs are also observed in the amino acid sequences of GPHR TMDs. Furthermore, most GPCR TMD conserved helix distortions are observed in our models of the structures of GPHR TMDs. Analysis of these structures has allowed us to propose a mechanism for activation of GPHR TMDs. CONCLUSIONS Insight into the mechanism of activation of the TSHR by both TSH and TSHR autoantibodies is likely to be useful in the development of new treatments for Graves' disease.
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Affiliation(s)
| | - Jane Sanders
- FIRS Laboratories, RSR Ltd, Parc Ty Glas, Llanishen, Cardiff, CF14 5DU, UK
| | - Jadwiga Furmaniak
- FIRS Laboratories, RSR Ltd, Parc Ty Glas, Llanishen, Cardiff, CF14 5DU, UK
| | - Bernard Rees Smith
- FIRS Laboratories, RSR Ltd, Parc Ty Glas, Llanishen, Cardiff, CF14 5DU, UK.
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Tucker EJ, Grover SR, Bachelot A, Touraine P, Sinclair AH. Premature Ovarian Insufficiency: New Perspectives on Genetic Cause and Phenotypic Spectrum. Endocr Rev 2016; 37:609-635. [PMID: 27690531 DOI: 10.1210/er.2016-1047] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Premature ovarian insufficiency (POI) is one form of female infertility, defined by loss of ovarian activity before the age of 40 and characterized by amenorrhea (primary or secondary) with raised gonadotropins and low estradiol. POI affects up to one in 100 females, including one in 1000 before the age of 30. Substantial evidence suggests a genetic basis for POI; however, the majority of cases remain unexplained, indicating that genes likely to be associated with this condition are yet to be discovered. This review discusses the current knowledge of the genetic basis of POI. We highlight genes typically known to cause syndromic POI that can be responsible for isolated POI. The role of mouse models in understanding POI pathogenesis is discussed, and a thorough list of candidate POI genes is provided. Identifying a genetic basis for POI has multiple advantages, such as enabling the identification of presymptomatic family members who can be offered counseling and cryopreservation of eggs before depletion, enabling personalized treatment based on the cause of an individual's condition, and providing better understanding of disease mechanisms that ultimately aid the development of improved treatments.
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Affiliation(s)
- Elena J Tucker
- Murdoch Children's Research Institute (E.J.T., S.R.G., A.H.S.), Royal Children's Hospital, Melbourne, VIC 3052 Australia; Department of Paediatrics (E.J.T., S.R.G., A.H.S.), University of Melbourne, Melbourne, VIC 3010, Australia; Department of Paediatric and Adolescent Gynaecology (S.R.G.), Royal Children's Hospital, Melbourne, VIC 3052, Australia; Assistance Publique Hôpitaux de Paris, (A.B., P.T.), IE3M, Université Pierre et Marie Curie, Paris 6 University, Department of Endocrinology and Reproductive Medicine, Centre de Référence des Maladies Endocriniennes Rares de la Croissance et des Pathologies Gynécologiques Rares, Pitié-Salpêtrière Hospital, Université Pierre et Marie Curie, 75013 Paris, France; Institut National de la Santé et de la Recherche Médicale (A.B., P.T.), 75654 Paris, France
| | - Sonia R Grover
- Murdoch Children's Research Institute (E.J.T., S.R.G., A.H.S.), Royal Children's Hospital, Melbourne, VIC 3052 Australia; Department of Paediatrics (E.J.T., S.R.G., A.H.S.), University of Melbourne, Melbourne, VIC 3010, Australia; Department of Paediatric and Adolescent Gynaecology (S.R.G.), Royal Children's Hospital, Melbourne, VIC 3052, Australia; Assistance Publique Hôpitaux de Paris, (A.B., P.T.), IE3M, Université Pierre et Marie Curie, Paris 6 University, Department of Endocrinology and Reproductive Medicine, Centre de Référence des Maladies Endocriniennes Rares de la Croissance et des Pathologies Gynécologiques Rares, Pitié-Salpêtrière Hospital, Université Pierre et Marie Curie, 75013 Paris, France; Institut National de la Santé et de la Recherche Médicale (A.B., P.T.), 75654 Paris, France
| | - Anne Bachelot
- Murdoch Children's Research Institute (E.J.T., S.R.G., A.H.S.), Royal Children's Hospital, Melbourne, VIC 3052 Australia; Department of Paediatrics (E.J.T., S.R.G., A.H.S.), University of Melbourne, Melbourne, VIC 3010, Australia; Department of Paediatric and Adolescent Gynaecology (S.R.G.), Royal Children's Hospital, Melbourne, VIC 3052, Australia; Assistance Publique Hôpitaux de Paris, (A.B., P.T.), IE3M, Université Pierre et Marie Curie, Paris 6 University, Department of Endocrinology and Reproductive Medicine, Centre de Référence des Maladies Endocriniennes Rares de la Croissance et des Pathologies Gynécologiques Rares, Pitié-Salpêtrière Hospital, Université Pierre et Marie Curie, 75013 Paris, France; Institut National de la Santé et de la Recherche Médicale (A.B., P.T.), 75654 Paris, France
| | - Philippe Touraine
- Murdoch Children's Research Institute (E.J.T., S.R.G., A.H.S.), Royal Children's Hospital, Melbourne, VIC 3052 Australia; Department of Paediatrics (E.J.T., S.R.G., A.H.S.), University of Melbourne, Melbourne, VIC 3010, Australia; Department of Paediatric and Adolescent Gynaecology (S.R.G.), Royal Children's Hospital, Melbourne, VIC 3052, Australia; Assistance Publique Hôpitaux de Paris, (A.B., P.T.), IE3M, Université Pierre et Marie Curie, Paris 6 University, Department of Endocrinology and Reproductive Medicine, Centre de Référence des Maladies Endocriniennes Rares de la Croissance et des Pathologies Gynécologiques Rares, Pitié-Salpêtrière Hospital, Université Pierre et Marie Curie, 75013 Paris, France; Institut National de la Santé et de la Recherche Médicale (A.B., P.T.), 75654 Paris, France
| | - Andrew H Sinclair
- Murdoch Children's Research Institute (E.J.T., S.R.G., A.H.S.), Royal Children's Hospital, Melbourne, VIC 3052 Australia; Department of Paediatrics (E.J.T., S.R.G., A.H.S.), University of Melbourne, Melbourne, VIC 3010, Australia; Department of Paediatric and Adolescent Gynaecology (S.R.G.), Royal Children's Hospital, Melbourne, VIC 3052, Australia; Assistance Publique Hôpitaux de Paris, (A.B., P.T.), IE3M, Université Pierre et Marie Curie, Paris 6 University, Department of Endocrinology and Reproductive Medicine, Centre de Référence des Maladies Endocriniennes Rares de la Croissance et des Pathologies Gynécologiques Rares, Pitié-Salpêtrière Hospital, Université Pierre et Marie Curie, 75013 Paris, France; Institut National de la Santé et de la Recherche Médicale (A.B., P.T.), 75654 Paris, France
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Bramble MS, Goldstein EH, Lipson A, Ngun T, Eskin A, Gosschalk JE, Roach L, Vashist N, Barseghyan H, Lee E, Arboleda VA, Vaiman D, Yuksel Z, Fellous M, Vilain E. A novel follicle-stimulating hormone receptor mutation causing primary ovarian failure: a fertility application of whole exome sequencing. Hum Reprod 2016; 31:905-14. [PMID: 26911863 DOI: 10.1093/humrep/dew025] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 01/28/2016] [Indexed: 12/11/2022] Open
Abstract
STUDY QUESTION Can whole exome sequencing (WES) and in vitro validation studies be used to find the causative genetic etiology in a patient with primary ovarian failure and infertility? SUMMARY ANSWER A novel follicle-stimulating hormone receptor (FSHR) mutation was found by WES and shown, via in vitro flow cytometry studies, to affect membrane trafficking. WHAT IS KNOWN ALREADY WES may diagnose up to 25-35% of patients with suspected disorders of sex development (DSD). FSHR mutations are an extremely rare cause of 46, XX gonadal dysgenesis with primary amenorrhea due to hypergonadotropic ovarian failure. STUDY DESIGN, SIZE, DURATION A WES study was followed by flow cytometry studies of mutant protein function. PARTICIPANTS/MATERIALS, SETTING, METHODS The study subjects were two Turkish sisters with hypergonadotropic primary amenorrhea, their parents and two unaffected sisters. The affected siblings and both parents were sequenced (trio-WES). Transient transfection of HEK 293T cells was performed with a vector containing wild-type FSHR as well as the novel FSHR variant that was discovered by WES. Cellular localization of FSHR protein as well as FSH-stimulated cyclic AMP (cAMP) production was evaluated using flow cytometry. MAIN RESULTS AND THE ROLE OF CHANCE Both affected sisters were homozygous for a previously unreported missense mutation (c.1222G>T, p.Asp408Tyr) in the second transmembrane domain of FSHR. Modeling predicted disrupted secondary structure. Flow cytometry demonstrated an average of 48% reduction in cell-surface signal detection (P < 0.01). The mean fluorescent signal for cAMP (second messenger of FSHR), stimulated by FSH, was reduced by 50% in the mutant-transfected cells (P < 0.01). LIMITATIONS, REASONS FOR CAUTION This is an in vitro validation. All novel purported genetic variants can be clinically reported only as 'variants of uncertain significance' until more patients with a similar phenotype are discovered with the same variant. WIDER IMPLICATIONS OF THE FINDINGS We report the first WES-discovered FSHR mutation, validated by quantitative flow cytometry. WES is a valuable tool for diagnosis of rare genetic diseases, and flow cytometry allows for quantitative characterization of purported variants. WES-assisted diagnosis allows for treatments aimed at the underlying molecular etiology of disease. Future studies should focus on pharmacological and assisted reproductive treatments aimed at the disrupted FSHR, so that patients with FSH resistance can be treated by personalized medicine. STUDY FUNDING/COMPETING INTERESTS E.V. is partially funded by the DSD Translational Research Network (NICHD 1R01HD068138). M.S.B. is funded by the Neuroendocrinology, Sex Differences and Reproduction training grant (NICHD 5T32HD007228). The authors have no competing interests to disclose.
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Affiliation(s)
- Matthew S Bramble
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Ellen H Goldstein
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of California Los Angeles, 10833 Le Conte Avenue, Room 24-130 CHS, Los Angeles, CA 90095, USA
| | - Allen Lipson
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Tuck Ngun
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Ascia Eskin
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Jason E Gosschalk
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Lara Roach
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Neerja Vashist
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Hayk Barseghyan
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Eric Lee
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Valerie A Arboleda
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Daniel Vaiman
- Department of Development, Reproduction, and Cancer, Institut Cochin, U1016 Inserm, University Sorbonne Paris, CNRS UMR8104, Paris, France
| | - Zafer Yuksel
- Department of Medical Genetics, Women and Children Hospital, Halkkent Mh. Fatih Sultan Mehmet Boulevard No. 23, Mersin 33240, Turkey
| | - Marc Fellous
- Department of Development, Reproduction, and Cancer, Institut Cochin, U1016 Inserm, University Sorbonne Paris, CNRS UMR8104, Paris, France
| | - Eric Vilain
- Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, 695 Charles E Young Drive South, Los Angeles, CA 90095, USA
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Laissue P. Aetiological coding sequence variants in non-syndromic premature ovarian failure: From genetic linkage analysis to next generation sequencing. Mol Cell Endocrinol 2015; 411:243-57. [PMID: 25960166 DOI: 10.1016/j.mce.2015.05.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 04/14/2015] [Accepted: 05/04/2015] [Indexed: 01/19/2023]
Abstract
Premature ovarian failure (POF) is a frequent pathology affecting 1-1.5% of women under 40 years old. Despite advances in diagnosing and treating human infertility, POF is still classified as being idiopathic in 50-80% of cases, strongly suggesting a genetic origin for the disease. Different types of autosomal and X-linked genetic anomalies can originate the phenotype in syndromic and non-syndromic POF cases. Particular interest has been focused on research into non-syndromic POF causative coding variants during the past two decades. This has been based on the assumption that amino acid substitutions might modify the intrinsic physicochemical properties of functional proteins, thereby inducing pathological phenotypes. In this case, a restricted number of mutations might originate the disease. However, like other complex pathologies, POF might result from synergistic/compensatory effects caused by several low-to-mildly drastic mutations which have frequently been classified as non-functional SNPs. Indeed, reproductive phenotypes can be considered as quantitative traits resulting from the subtle interaction of many genes. Although numerous sequencing projects have involved candidate genes, only a few coding mutations explaining a low percentage of cases have been described. Such apparent failure to identify aetiological coding sequence variations might have been due to the inherent molecular complexity of mammalian reproduction and to the difficulty of simultaneously analysing large genomic regions by Sanger sequencing. The purpose of this review is to present the molecular and cellular effects caused by non-synonymous mutations which have been formally associated, by functional tests, with the aetiology of hypergonadotropic non-syndromic POF. Considerations have also been included regarding the polygenic nature of reproduction and POF, as well as future approaches for identifying novel aetiological genes based on next generation sequencing (NGS).
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Affiliation(s)
- Paul Laissue
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia.
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46
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Fonseca DJ, Patiño LC, Suárez YC, de Jesús Rodríguez A, Mateus HE, Jiménez KM, Ortega-Recalde O, Díaz-Yamal I, Laissue P. Next generation sequencing in women affected by nonsyndromic premature ovarian failure displays new potential causative genes and mutations. Fertil Steril 2015; 104:154-62.e2. [PMID: 25989972 DOI: 10.1016/j.fertnstert.2015.04.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 04/07/2015] [Accepted: 04/12/2015] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To identify new molecular actors involved in nonsyndromic premature ovarian failure (POF) etiology. DESIGN This is a retrospective case-control cohort study. SETTING University research group and IVF medical center. PATIENT(S) Twelve women affected by nonsyndromic POF. The control group included 176 women whose menopause had occurred after age 50 and had no antecedents regarding gynecological disease. A further 345 women from the same ethnic origin (general population group) were also recruited to assess allele frequency for potentially deleterious sequence variants. INTERVENTION(S) Next generation sequencing (NGS), Sanger sequencing, and bioinformatics analysis. MAIN OUTCOME MEASURE(S) The complete coding regions of 70 candidate genes were massively sequenced, via NGS, in POF patients. Bioinformatics and genetics were used to confirm NGS results and to identify potential sequence variants related to the disease pathogenesis. RESULT(S) We have identified mutations in two novel genes, ADAMTS19 and BMPR2, that are potentially related to POF origin. LHCGR mutations, which might have contributed to the phenotype, were also detected. CONCLUSION(S) We thus recommend NGS as a powerful tool for identifying new molecular actors in POF and for future diagnostic/prognostic purposes.
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Affiliation(s)
- Dora Janeth Fonseca
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | - Liliana Catherine Patiño
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | - Yohjana Carolina Suárez
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | - Asid de Jesús Rodríguez
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | - Heidi Eliana Mateus
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | - Karen Marcela Jiménez
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | - Oscar Ortega-Recalde
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | | | - Paul Laissue
- Unidad de Genética, Grupo GENIUROS, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia.
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Banerjee AA, Mahale SD. Role of the Extracellular and Intracellular Loops of Follicle-Stimulating Hormone Receptor in Its Function. Front Endocrinol (Lausanne) 2015; 6:110. [PMID: 26236283 PMCID: PMC4505104 DOI: 10.3389/fendo.2015.00110] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 07/03/2015] [Indexed: 12/20/2022] Open
Abstract
Follicle-stimulating hormone receptor (FSHR) is a leucine-rich repeat containing class A G-protein coupled receptor belonging to the subfamily of glycoprotein hormone receptors (GPHRs), which includes luteinizing hormone/choriogonadotropin receptor (LH/CGR) and thyroid-stimulating hormone receptor. Its cognate ligand, follicle-stimulating hormone binds to, and activates FSHR expressed on the surface of granulosa cells of the ovary, in females, and Sertoli cells of the testis, in males, to bring about folliculogenesis and spermatogenesis, respectively. FSHR contains a large extracellular domain (ECD) consisting of leucine-rich repeats at the N-terminal end and a hinge region at the C-terminus that connects the ECD to the membrane spanning transmembrane domain (TMD). The TMD consists of seven α-helices that are connected to each other by means of three extracellular loops (ELs) and three intracellular loops (ILs) and ends in a short-cytoplasmic tail. It is well established that the ECD is the primary hormone binding domain, whereas the TMD is the signal transducing domain. However, several studies on the ELs and ILs employing site directed mutagenesis, generation of chimeric receptors and in vitro characterization of naturally occurring mutations have proven their indispensable role in FSHR function. Their role in every phase of the life cycle of the receptor like post translational modifications, cell surface trafficking, hormone binding, activation of downstream signaling, receptor phosphorylation, hormone-receptor internalization, and recycling of hormone-receptor complex have been documented. Mutations in the loops causing dysregulation of these processes lead to pathophysiological conditions. In other GPHRs as well, the loops have been convincingly shown to contribute to various aspects of receptor function. This review article attempts to summarize the extensive contributions of FSHR loops and C-terminal tail to its function.
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Affiliation(s)
- Antara A. Banerjee
- Division of Structural Biology, National Institute for Research in Reproductive Health, Indian Council of Medical Research, Mumbai, India
| | - Smita D. Mahale
- Division of Structural Biology, National Institute for Research in Reproductive Health, Indian Council of Medical Research, Mumbai, India
- ICMR Biomedical Informatics Centre, National Institute for Research in Reproductive Health, Indian Council of Medical Research, Mumbai, India
- *Correspondence: Smita D. Mahale, Division of Structural Biology, ICMR Biomedical Informatics Centre, National Institute for Research in Reproductive Health, Indian Council of Medical Research, Jehangir Merwanji Street, Parel, Mumbai 400 012, India,
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48
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Simpson JL. Genetics of female infertility due to anomalies of the ovary and mullerian ducts. Methods Mol Biol 2014; 1154:39-73. [PMID: 24782005 DOI: 10.1007/978-1-4939-0659-8_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Genetic factors are pivotal in reproductive development and subsequent reproductive processes. If disturbed, infertility can occur. In the female, genetic factors affecting the ovary and the uterus are not uncommon causes of infertility. Terminal deletions on the X long arm and X short arm and X chromosomal mosaicism have long been accepted as causes of premature ovarian failure (POF). Responsible genes on the X have not yet elucidated. Attractive candidate genes for POF also exist on autosomes, and in over a dozen genes molecular perturbations are documented in non-syndromic POF. The most common single-gene cause of POF is premutation carriers for FMR1 (fragile X syndrome). As other candidate genes and additional ethnic groups are interrogated, the proportion of POF cases due to single-gene mutation will increase. Among uterine anomalies, incomplete mullerian fusion is most common. Increased recurrence risks for first-degree relatives confirm a role for genetic factors; interrogation of candidate genes is under way.
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Affiliation(s)
- Joe Leigh Simpson
- Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, 11200 SW 8th Street, AHC2 693, Miami, FL, 33199, USA,
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49
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BMP15 c.-9C>G promoter sequence variant may contribute to the cause of non-syndromic premature ovarian failure. Reprod Biomed Online 2014; 29:627-33. [DOI: 10.1016/j.rbmo.2014.07.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 07/11/2014] [Accepted: 07/14/2014] [Indexed: 01/13/2023]
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50
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Karakaya C, Guzeloglu-Kayisli O, Hobbs RJ, Gerasimova T, Uyar A, Erdem M, Oktem M, Erdem A, Gumuslu S, Ercan D, Sakkas D, Comizzoli P, Seli E, Lalioti MD. Follicle-stimulating hormone receptor (FSHR) alternative skipping of exon 2 or 3 affects ovarian response to FSH. Mol Hum Reprod 2014; 20:630-43. [PMID: 24670307 DOI: 10.1093/molehr/gau024] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Genes critical for fertility are highly conserved in mammals. Interspecies DNA sequence variation, resulting in amino acid substitutions and post-transcriptional modifications, including alternative splicing, are a result of evolution and speciation. The mammalian follicle-stimulating hormone receptor (FSHR) gene encodes distinct species-specific forms by alternative splicing. Skipping of exon 2 of the human FSHR was reported in women of North American origin and correlated with low response to ovarian stimulation with exogenous follicle-stimulating hormone (FSH). To determine whether this variant correlated with low response in women of different genetic backgrounds, we performed a blinded retrospective observational study in a Turkish cohort. Ovarian response was determined as low, intermediate or high according to retrieved oocyte numbers after classifying patients in four age groups (<35, 35-37, 38-40, >40). Cumulus cells collected from 96 women undergoing IVF/ICSI following controlled ovarian hyperstimulation revealed four alternatively spliced FSHR products in seven patients (8%): exon 2 deletion in four patients; exon 3 and exons 2 + 3 deletion in one patient each, and a retention of an intron 1 fragment in one patient. In all others (92%) splicing was intact. Alternative skipping of exons 2, 3 or 2 + 3 were exclusive to low responders and was independent of the use of agonist or antagonist. Interestingly, skipping of exon 3 occurs naturally in the ovaries of domestic cats--a good comparative model for human fertility. We tested the signaling potential of human and cat variants after transfection in HEK293 cells and FSH stimulation. None of the splicing variants initiated cAMP signaling despite high FSH doses, unlike full-length proteins. These data substantiate the occurrence of FSHR exon skipping in a subgroup of low responders and suggest that species-specific regulation of FSHR splicing plays diverse roles in mammalian ovarian function.
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Affiliation(s)
- Cengiz Karakaya
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT 06510, USA Division of Reproductive Endocrinology and Infertility, IVF Center, Department of Obstetrics and Gynecology, Gazi University Medical School, Ankara 06500 Turkey
| | - Ozlem Guzeloglu-Kayisli
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT 06510, USA Present address: Department of Obstetrics and Gynecology, Ohio State University College of Medicine, Columbus, OH 43210, USA
| | - Rebecca J Hobbs
- Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC 20008, USA Present address: Taronga Conservation Society Australia, Taronga Western Plains Zoo, Duboo, NSW 2830, Australia
| | - Tsilya Gerasimova
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT 06510, USA
| | - Asli Uyar
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT 06510, USA
| | - Mehmet Erdem
- Division of Reproductive Endocrinology and Infertility, IVF Center, Department of Obstetrics and Gynecology, Gazi University Medical School, Ankara 06500 Turkey
| | - Mesut Oktem
- Division of Reproductive Endocrinology and Infertility, IVF Center, Department of Obstetrics and Gynecology, Gazi University Medical School, Ankara 06500 Turkey
| | - Ahmet Erdem
- Division of Reproductive Endocrinology and Infertility, IVF Center, Department of Obstetrics and Gynecology, Gazi University Medical School, Ankara 06500 Turkey
| | - Seyhan Gumuslu
- Division of Reproductive Endocrinology and Infertility, IVF Center, Department of Obstetrics and Gynecology, Gazi University Medical School, Ankara 06500 Turkey
| | - Deniz Ercan
- Division of Reproductive Endocrinology and Infertility, IVF Center, Department of Obstetrics and Gynecology, Gazi University Medical School, Ankara 06500 Turkey
| | - Denny Sakkas
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT 06510, USA Present address: Boston IVF, Waltham, MA 02451, USA
| | - Pierre Comizzoli
- Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC 20008, USA
| | - Emre Seli
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT 06510, USA
| | - Maria D Lalioti
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT 06510, USA
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