1
|
Monrose M, Holota H, Martinez G, Damon-Soubeyrand C, Thirouard L, Martinot E, Battistelli E, de Haze A, Bravard S, Tamisier C, Caira F, Coutton C, Barbotin AL, Boursier A, Lakhal L, Beaudoin C, Volle DH. Constitutive Androstane Receptor Regulates Germ Cell Homeostasis, Sperm Quality, and Male Fertility via Akt-Foxo1 Pathway. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2402082. [PMID: 39318179 DOI: 10.1002/advs.202402082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 07/02/2024] [Indexed: 09/26/2024]
Abstract
Male sexual function can be disrupted by exposure to exogenous compounds that cause testicular physiological alterations. The constitutive androstane receptor (Car) is a receptor for both endobiotics and xenobiotics involved in detoxification. However, its role in male fertility, particularly in regard to the reprotoxic effects of environmental pollutants, remains unclear. This study aims to investigate the role of the Car signaling pathway in male fertility. In vivo, in vitro, and pharmacological approaches are utilized in wild-type and Car-deficient mouse models. The results indicate that Car inhibition impaired male fertility due to altered sperm quality, specifically histone retention, which is correlated with an increased percentage of dying offspring in utero. The data highlighted interactions among Car, Akt, Foxo1, and histone acetylation. This study demonstrates that Car is crucial in germ cell homeostasis and male fertility. Further research on the Car signaling pathway is necessary to reveal unidentified causes of altered fertility and understand the harmful impact of environmental molecules on male fertility and offspring health.
Collapse
Affiliation(s)
- Mélusine Monrose
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - Hélène Holota
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - Guillaume Martinez
- CHU Grenoble Alpes, UM de Génétique Chromosomique, Grenoble, F-38000, France
- Team Genetics Epigenetics and Therapies of Infertility, Institute for Advanced Biosciences, University Grenoble Alpes, INSERM U1209, CNRS UMR 5309, Grenoble, F-38000, France
| | - Christelle Damon-Soubeyrand
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Plateform Anipath, Clermont-Ferrand, F-63001, France
| | - Laura Thirouard
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - Emmanuelle Martinot
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - Edwige Battistelli
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - Angélique de Haze
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - Stéphanie Bravard
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Plateform Anipath, Clermont-Ferrand, F-63001, France
| | - Christelle Tamisier
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - Françoise Caira
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - Charles Coutton
- CHU Grenoble Alpes, UM de Génétique Chromosomique, Grenoble, F-38000, France
- Team Genetics Epigenetics and Therapies of Infertility, Institute for Advanced Biosciences, University Grenoble Alpes, INSERM U1209, CNRS UMR 5309, Grenoble, F-38000, France
| | - Anne-Laure Barbotin
- CHU Lille, Institut de Biologie de la Reproduction-Spermiologie-CECOS, Lille, F-59000, France
- Inserm UMR-S 1172, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Lille, F-59000, France
| | - Angèle Boursier
- CHU Lille, Institut de Biologie de la Reproduction-Spermiologie-CECOS, Lille, F-59000, France
- Inserm UMR-S 1172, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Lille, F-59000, France
| | - Laila Lakhal
- INRAe UMR1331, ToxAlim, University of Toulouse, Toulouse, F-31027, France
| | - Claude Beaudoin
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| | - David H Volle
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD Institute, Team-Volle, Clermont-Ferrand, F-63001, France
| |
Collapse
|
2
|
Nicu AT, Medar C, Chifiriuc MC, Gradisteanu Pircalabioru G, Burlibasa L. Epigenetics and Testicular Cancer: Bridging the Gap Between Fundamental Biology and Patient Care. Front Cell Dev Biol 2022; 10:861995. [PMID: 35465311 PMCID: PMC9023878 DOI: 10.3389/fcell.2022.861995] [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: 01/25/2022] [Accepted: 03/22/2022] [Indexed: 11/15/2022] Open
Abstract
Testicular cancer is the most common solid tumor affecting young males. Most testicular cancers are testicular germ cell tumors (TGCTs), which are divided into seminomas (SGCTs) and non-seminomatous testicular germ cell tumors (NSGCTs). During their development, primordial germ cells (PGCs) undergo epigenetic modifications and any disturbances in their pattern might lead to cancer development. The present study provides a comprehensive review of the epigenetic mechanisms–DNA methylation, histone post-translational modifications, bivalent marks, non-coding RNA–associated with TGCT susceptibility, initiation, progression and response to chemotherapy. Another important purpose of this review is to highlight the recent investigations regarding the identification and development of epigenetic biomarkers as powerful tools for the diagnostic, prognostic and especially for epigenetic-based therapy.
Collapse
Affiliation(s)
- Alina-Teodora Nicu
- Faculty of Biology, University of Bucharest, Bucharest, Romania
- Department of Genetics, University of Bucharest, Bucharest, Romania
| | - Cosmin Medar
- University of Medicine and Pharmacy “Carol Davila”, Clinical Hospital “Prof. dr Theodor Burghele”, Bucharest, Romania
| | - Mariana Carmen Chifiriuc
- Faculty of Biology, University of Bucharest, Bucharest, Romania
- Research Institute of University of Bucharest (ICUB), Bucharest, Romania
- Academy of Romanian Scientists, Bucharest, Romania
- Romanian Academy, Bucharest, Romania
| | | | - Liliana Burlibasa
- Faculty of Biology, University of Bucharest, Bucharest, Romania
- Department of Genetics, University of Bucharest, Bucharest, Romania
| |
Collapse
|
3
|
Gaspari L, Tessier B, Paris F, Bergougnoux A, Hamamah S, Sultan C, Kalfa N. Endocrine-Disrupting Chemicals and Disorders of Penile Development in Humans. Sex Dev 2021; 15:213-228. [PMID: 34438394 DOI: 10.1159/000517157] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/10/2021] [Indexed: 01/09/2023] Open
Abstract
This paper reviews the current knowledge on the environmental effects on penile development in humans. The specific focus is on endocrine-disrupting chemicals (EDCs), a heterogeneous group of natural or manmade substances that interfere with endocrine function, and whether they can induce hypospadias and micropenis in male neonates. Epidemiological data and animal observations first raised suspicions about environmental effects, leading to the testis dysgenesis syndrome (TDS) hypothesis. More recent research has provided stronger indications that TDS may indeed be the result of the direct or indirect effects of EDCs. Drawing on epidemiological and toxicological studies, we also report on the effects of maternal diet and substances like pesticides, phthalates, bisphenol A, and polychlorinated biphenyls. Proximity to contamination hazards and occupational exposure are also suspected to contribute to the occurrence of hypospadias and micropenis. Lastly, the cumulative effects of EDCs and the possibility of transgenerational effects, with the penile development of subsequent generations being affected, raise concerns for long-term public health.
Collapse
Affiliation(s)
- Laura Gaspari
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Service de Pédiatrie, Hôpital Arnaud-de-Villeneuve, CHU Montpellier, Université Montpellier, Montpellier, France.,Développement Embryonnaire Fertilité Environnement, INSERM 1203, Université Montpellier, Montpellier, France
| | - Benoit Tessier
- Département de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Institut Debrest de Santé Publique IDESP, UMR INSERM, Université Montpellier, Montpellier, France
| | - Françoise Paris
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Service de Pédiatrie, Hôpital Arnaud-de-Villeneuve, CHU Montpellier, Université Montpellier, Montpellier, France.,Développement Embryonnaire Fertilité Environnement, INSERM 1203, Université Montpellier, Montpellier, France
| | - Anne Bergougnoux
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Laboratoire de Génétique Moléculaire, PhyMedExp, INSERM, CNRS UMR, CHU Montpellier, Université Montpellier, Montpellier, France
| | - Samir Hamamah
- Développement Embryonnaire Fertilité Environnement, INSERM 1203, Université Montpellier, Montpellier, France.,Département de Biologie de la Reproduction, Biologie de la Reproduction/DPI et CECOS, CHU Montpellier, Université Montpellier, Montpellier, France
| | - Charles Sultan
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France
| | - Nicolas Kalfa
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Département de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Institut Debrest de Santé Publique IDESP, UMR INSERM, Université Montpellier, Montpellier, France
| |
Collapse
|
4
|
Holota H, Thirouard L, Monrose M, Garcia M, De Haze A, Saru JP, Caira F, Beaudoin C, Volle DH. FXRα modulates leydig cell endocrine function in mouse. Mol Cell Endocrinol 2020; 518:110995. [PMID: 32827571 DOI: 10.1016/j.mce.2020.110995] [Citation(s) in RCA: 5] [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: 04/28/2020] [Revised: 07/27/2020] [Accepted: 08/14/2020] [Indexed: 01/14/2023]
Abstract
The hypothalamic-pituitary axis exert a major control over endocrine and exocrine testicular functions. The hypothalamic-pituitary axis corresponds to a cascade with the Gonadotropin Releasing Hormone secreted by the hypothalamus, which stimulates the synthesis and the release of Luteinizing Hormone (LH) and Follicle Stimulating Hormone by the gonadotropic cells of the anterior pituitary. The LH signaling pathway controls the steroidogenic activity of the Leydig cells via the activation of the luteinizing hormone/choriogonadotropin receptor. In order to avoid a runaway system, sex steroids exert a negative feedback within hypothalamus and pituitary. Testicular steroidogenesis is locally controlled within Leydig cells. The present work reviews some local regulations of steroidogenesis within the Leydig cells focusing mainly on the roles of the Farnesoid-X-Receptor-alpha and its interactions with several orphan members of the nuclear receptor superfamily. Further studies are required to reinforce our knowledge of the regulation of testicular endocrine function, which is necessary to ensure a better understanding of fertility disorders and then proposed an adequate treatment of the diseases.
Collapse
Affiliation(s)
- Hélène Holota
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - Laura Thirouard
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - Mélusine Monrose
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - Manon Garcia
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - Angélique De Haze
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - Jean-Paul Saru
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - Françoise Caira
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - Claude Beaudoin
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - David H Volle
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France.
| |
Collapse
|
5
|
Ronis MJ, Gomez-Acevedo H, Shankar K, Sharma N, Blackburn M, Singhal R, Mercer KE, Badger TM. EB 2017 Article: Soy protein isolate feeding does not result in reproductive toxicity in the pre-pubertal rat testis. Exp Biol Med (Maywood) 2019; 243:695-707. [PMID: 29763383 DOI: 10.1177/1535370218771333] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The isoflavone phytoestrogens found in the soy protein isolate used in soy infant formulas have been shown to have estrogenic actions in the developing male reproductive tract resulting in reproductive toxicity. However, few studies have examined potential estrogenicity of soy protein isolate as opposed to that of pure isoflavones. In this study, we fed weanling male Sprague-Dawley rats a semi-purified diet with casein or soy protein isolate as the sole protein source from postnatal day 21 to 33. Additional groups were fed casein or soy protein isolate and treated s.c. with 10 µg/kg/d estradiol via osmotic minipump. Estradiol treatment reduced testis, prostate weights, and serum androgen concentrations ( P < 0.05). Soy protein isolate had no effect. Estradiol up-regulated 489 and down-regulated 1237 testicular genes >1.5-fold ( P < 0.05). In contrast, soy protein isolate only significantly up-regulated expression of 162 genes and down-regulated 16 genes. The top 30 soy protein isolate-up-regulated genes shared 93% concordance with estradiol up-regulated genes. There was little overlap between soy protein isolate down-regulated genes and those down-regulated by estradiol treatment. Functional annotation analysis revealed significant differences in testicular biological processes affected by estradiol or soy protein isolate. Estradiol had major actions on genes involved in reproductive processes including down-regulation of testicular steroid synthesis and expression of steroid receptor activated receptor (Star) and cytochrome P450 17α-hydroxylase/(Cyp17a1). In contrast, soy protein isolate primarily affected pathways associated with macromolecule modifications including ubiquitination and histone methylation. Our results indicate that rather than acting as a weak estrogen in the developing testis, soy protein isolate appears to act as a selective estrogen receptor modulator with little effect on reproductive processes. Impact statement Soy protein isolate (SPI) is the sole protein used to make soy-based infant formulas. SPI contains phytoestrogens, which are structurally similar to estradiol. These phytoestrogens, daidzein, genistein, and equol, fit the definition of endocrine-disrupting compounds, and at high concentrations, have estrogenic actions resulting in reproductive toxicity in the developing male, when provided as isolated chemicals. However, few animal studies have examined the potential estrogenicity of SPI as opposed to pure isoflavones. In this study, SPI feeding did not elicit an estrogenic response in the testis nor any adverse outcomes including reduced testicular growth, or androgen production during early development in rats when compared to those receiving estradiol. These findings are consistent with emerging data showing no differences in reproductive development in males and female children that received breast milk, cow's milk formula, or soy infant formula during the postnatal feeding period.
Collapse
Affiliation(s)
- Martin Jj Ronis
- 1 Department of Pharmacology & Experimental Therapeutics, Louisiana State University Health Sciences Center - New Orleans, LA 70112, USA
| | - Horacio Gomez-Acevedo
- 2 Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Kartik Shankar
- 3 Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.,4 Arkansas Children's Nutrition Center, Little Rock, AR, 72202, USA
| | - Neha Sharma
- 4 Arkansas Children's Nutrition Center, Little Rock, AR, 72202, USA
| | | | - Rohit Singhal
- 4 Arkansas Children's Nutrition Center, Little Rock, AR, 72202, USA
| | - Kelly E Mercer
- 3 Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.,4 Arkansas Children's Nutrition Center, Little Rock, AR, 72202, USA
| | - Thomas M Badger
- 3 Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.,4 Arkansas Children's Nutrition Center, Little Rock, AR, 72202, USA
| |
Collapse
|
6
|
Baptissart M, Sèdes L, Holota H, Thirouard L, Martinot E, de Haze A, Rouaisnel B, Caira F, Beaudoin C, Volle DH. Multigenerational impacts of bile exposure are mediated by TGR5 signaling pathways. Sci Rep 2018; 8:16875. [PMID: 30443025 PMCID: PMC6237852 DOI: 10.1038/s41598-018-34863-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 08/16/2018] [Indexed: 01/26/2023] Open
Abstract
Besides their well-known roles in digestion and fat solubilization, bile acids (BAs) have been described as signaling molecules activating the nuclear receptor Farnesoid-X-receptor (FXRα) or the G-protein-coupled bile acid receptor-1 (GPBAR-1 or TGR5). In previous reports, we showed that BAs decrease male fertility due to abnormalities of the germ cell lineage dependent on Tgr5 signaling pathways. In the presentstudy, we tested whether BA exposure could impact germ cell DNA integrity leading to potential implications for progeny. For that purpose, adult F0 male mice were fed a diet supplemented with cholic acid (CA) or the corresponding control diet during 3.5 months prior mating. F1 progeny from CA exposed founders showed higher perinatal lethality, impaired BA homeostasis and reduced postnatal growth, as well as altered glucose metabolism in later life. The majority of these phenotypic traits were maintained up to the F2 generation. In F0 sperm cells, differential DNA methylation associated with CA exposure may contribute to the initial programming of developmental and metabolic defects observed in F1 and F2 offspring. Tgr5 knock-out mice combined with in vitro strategies defined the critical role of paternal Tgr5 dependent pathways in the multigenerational impacts of ancestral CA exposure.
Collapse
Affiliation(s)
- Marine Baptissart
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - Lauriane Sèdes
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - Hélène Holota
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - Laura Thirouard
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - Emmanuelle Martinot
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - Angélique de Haze
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - Betty Rouaisnel
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - Françoise Caira
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - Claude Beaudoin
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France
| | - David H Volle
- INSERM U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63000, Clermont-Ferrand, France.
| |
Collapse
|
7
|
Sèdes L, Desdoits-Lethimonier C, Rouaisnel B, Holota H, Thirouard L, Lesne L, Damon-Soubeyrand C, Martinot E, Saru JP, Mazaud-Guittot S, Caira F, Beaudoin C, Jégou B, Volle DH. Crosstalk between BPA and FXRα Signaling Pathways Lead to Alterations of Undifferentiated Germ Cell Homeostasis and Male Fertility Disorders. Stem Cell Reports 2018; 11:944-958. [PMID: 30245210 PMCID: PMC6178796 DOI: 10.1016/j.stemcr.2018.08.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 08/27/2018] [Accepted: 08/27/2018] [Indexed: 12/20/2022] Open
Abstract
Several studies have reported an association between the farnesoid X receptor alpha (FXRα) and estrogenic signaling pathways. Fxrα could thus be involved in the reprotoxic effects of endocrine disruptors such as bisphenol-A (BPA). To test this hypothesis, mice were exposed to BPA and/or stigmasterol (S), an FXRα antagonist. Following the exposure to both molecules, wild-type animals showed impaired fertility and lower sperm cell production associated with the alteration of the establishment and maintenance of the undifferentiated germ cell pool. The crosstalk between BPA and FXRα is further supported by the lower impact of BPA in mice genetically ablated for Fxrα and the fact that BPA counteracted the effects of FXRα agonists. These effects might result from the downregulation of Fxrα expression following BPA exposure. BPA and S act additively in human testis. Our data demonstrate that FXRα activity modulates the impact of BPA on male gonads and on undifferentiated germ cell population. BPA and S exposures synergistically induce male fertility disorders BPA regulates Fxr expression BPA and S act additively in human testis
Collapse
Affiliation(s)
- Lauriane Sèdes
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Christèle Desdoits-Lethimonier
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Betty Rouaisnel
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Hélène Holota
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Laura Thirouard
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Laurianne Lesne
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Christelle Damon-Soubeyrand
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Emmanuelle Martinot
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Jean-Paul Saru
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Séverine Mazaud-Guittot
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Françoise Caira
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Claude Beaudoin
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - Bernard Jégou
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - David H Volle
- INSERM U 1103, Université Clermont Auvergne, CNRS, UMR 6293, GReD, Laboratoire Génétique, Reproduction & Développement, 28 Place Henri-Dunant, 63000 Clermont-Ferrand, France.
| |
Collapse
|
8
|
Baptissart M, Martinot E, Vega A, Sédes L, Rouaisnel B, de Haze A, Baron S, Schoonjans K, Caira F, Volle DH. Bile acid-FXRα pathways regulate male sexual maturation in mice. Oncotarget 2017; 7:19468-82. [PMID: 26848619 PMCID: PMC4991395 DOI: 10.18632/oncotarget.7153] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 01/22/2016] [Indexed: 12/21/2022] Open
Abstract
The bile acid receptor Farnesol-X-Receptor alpha (FRXα) is a member of the nuclear receptor superfamily. FRXα is expressed in the interstitial compartment of the adult testes, which contain the Leydig cells. In adult, short term treatment (12 hours) with FRXα agonist inhibits the expression of steroidogenic genes via the induction of the Small heterodimer partner (SHP). However the consequences of FRXα activation on testicular pathophysiology have never been evaluated. We demonstrate here that mice fed a diet supplemented with bile acid during pubertal age show increased incidence of infertility. This is associated with altered differentiation and increase apoptosis of germ cells due to lower testosterone levels. At the molecular level, next to the repression of basal steroidogenesis via the induction expression of Shp and Dax-1, two repressors of steroidogenesis, the main action of the BA-FRXα signaling is through lowering the Leydig cell sensitivity to the hypothalamo-pituitary axis, the main regulator of testicular endocrine function. In conclusion, BA-FRXα signaling is a critical actor during sexual maturation.
Collapse
Affiliation(s)
- Marine Baptissart
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Emmanuelle Martinot
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Aurélie Vega
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Lauriane Sédes
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Betty Rouaisnel
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Angélique de Haze
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Silvère Baron
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Kristina Schoonjans
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Françoise Caira
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| | - David H Volle
- INSERM U 1103, Laboratoire GReD, Campus Universitaire des Cézeaux, TSA 60026, CS 60026, 63178 Aubière Cedex, France.,Université Clermont Auvergne, Université Blaise Pascal, GReD, F-63178 Aubière, France.,CNRS, UMR 6293, GReD, F-63178 Aubière, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, F-63000 Clermont-Ferrand, France
| |
Collapse
|
9
|
Sèdes L, Martinot E, Baptissart M, Baron S, Caira F, Beaudoin C, Volle DH. Bile acids and male fertility: From mouse to human? Mol Aspects Med 2017; 56:101-109. [DOI: 10.1016/j.mam.2017.05.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 05/09/2017] [Accepted: 05/12/2017] [Indexed: 02/06/2023]
|
10
|
Martinot E, Sèdes L, Baptissart M, Holota H, Rouaisnel B, Damon-Soubeyrand C, De Haze A, Saru JP, Thibault-Carpentier C, Keime C, Lobaccaro JMA, Baron S, Benoit G, Caira F, Beaudoin C, Volle DH. The Bile Acid Nuclear Receptor FXRα Is a Critical Regulator of Mouse Germ Cell Fate. Stem Cell Reports 2017; 9:315-328. [PMID: 28669602 PMCID: PMC5511114 DOI: 10.1016/j.stemcr.2017.05.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 05/31/2017] [Accepted: 05/31/2017] [Indexed: 12/14/2022] Open
Abstract
Spermatogenesis is the process by which spermatozoa are generated from spermatogonia. This cell population is heterogeneous, with self-renewing spermatogonial stem cells (SSCs) and progenitor spermatogonia that will continue on a path of differentiation. Only SSCs have the ability to regenerate and sustain spermatogenesis. This makes the testis a good model to investigate stem cell biology. The Farnesoid X Receptor alpha (FXRα) was recently shown to be expressed in the testis. However, its global impact on germ cell homeostasis has not yet been studied. Here, using a phenotyping approach in Fxrα−/− mice, we describe unexpected roles of FXRα on germ cell physiology independent of its effects on somatic cells. FXRα helps establish and maintain an undifferentiated germ cell pool and in turn influences male fertility. FXRα regulates the expression of several pluripotency factors. Among these, in vitro approaches show that FXRα controls the expression of the pluripotency marker Lin28 in the germ cells. FXRα regulated germ cell apoptotis independently of androgen homeostasis FXRα controls germ cell differentiation FXRα regulates the establishment and maintenance of undifferentiated germ cells In germ cells, FXRα controls the expression of pluripotency markers such as Lin28
Collapse
Affiliation(s)
- Emmanuelle Martinot
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Lauriane Sèdes
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Marine Baptissart
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Hélène Holota
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Betty Rouaisnel
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Christelle Damon-Soubeyrand
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 63000 Clermont-Ferrand, France
| | - Angélique De Haze
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 63000 Clermont-Ferrand, France
| | - Jean-Paul Saru
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 63000 Clermont-Ferrand, France
| | | | - Céline Keime
- IGBMC - CNRS UMR 7104 - Inserm U 964, 1 BP 10142, 67404 Illkirch Cedex, France
| | - Jean-Marc A Lobaccaro
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 63000 Clermont-Ferrand, France
| | - Silvère Baron
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 63000 Clermont-Ferrand, France
| | - Gérard Benoit
- Laboratoire de Biologie Moléculaire de la Cellule, Ecole normale supérieure de Lyon, UMR5239 CNRS/ENS Lyon/UCBL/HCL, 46, allée d'Italie, 69364 Lyon Cedex 07, France
| | - Françoise Caira
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Claude Beaudoin
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - David H Volle
- INSERM U 1103, Université Clermont Auvergne, CNRS UMR 6293, Laboratoire GReD, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France.
| |
Collapse
|
11
|
Bile acid homeostasis controls CAR signaling pathways in mouse testis through FXRalpha. Sci Rep 2017; 7:42182. [PMID: 28181583 PMCID: PMC5299845 DOI: 10.1038/srep42182] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 01/06/2017] [Indexed: 12/11/2022] Open
Abstract
Bile acids (BAs) are molecules with endocrine activities controlling several physiological functions such as immunity, glucose homeostasis, testicular physiology and male fertility. The role of the nuclear BA receptor FXRα in the control of BA homeostasis has been well characterized. The present study shows that testis synthetize BAs. We demonstrate that mice invalidated for the gene encoding FXRα have altered BA homeostasis in both liver and testis. In the absence of FXRα, BA exposure differently alters hepatic and testicular expression of genes involved in BA synthesis. Interestingly, Fxrα-/- males fed a diet supplemented with BAs show alterations of testicular physiology and sperm production. This phenotype was correlated with the altered testicular BA homeostasis and the production of intermediate metabolites of BAs which led to the modulation of CAR signaling pathways within the testis. The role of the CAR signaling pathways within testis was validated using specific CAR agonist (TCPOBOP) and inverse agonist (androstanol) that respectively inhibited or reproduced the phenotype observed in Fxrα-/- males fed BA-diet. These data open interesting perspectives to better define how BA homeostasis contributes to physiological or pathophysiological conditions via the modulation of CAR activity.
Collapse
|
12
|
Siddeek B, Lakhdari N, Inoubli L, Paul-Bellon R, Isnard V, Thibault E, Bongain A, Chevallier D, Repetto E, Trabucchi M, Michiels JF, Yzydorczyk C, Simeoni U, Urtizberea M, Mauduit C, Benahmed M. Developmental epigenetic programming of adult germ cell death disease: Polycomb protein EZH2-miR-101 pathway. Epigenomics 2016; 8:1459-1479. [PMID: 27762633 DOI: 10.2217/epi-2016-0061] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
AIM The Developmental Origin of Health and Disease refers to the concept that early exposure to toxicants or nutritional imbalances during perinatal life induces changes that enhance the risk of developing noncommunicable diseases in adulthood. Patients/materials & methods: An experimental model with an adult chronic germ cell death phenotype resulting from exposure to a xenoestrogen was used. RESULTS A reciprocal negative feedback loop involving decreased EZH2 protein level and increased miR-101 expression was identified. In vitro and in vivo knockdown of EZH2 induced an apoptotic process in germ cells through increased levels of apoptotic factors (BIM and BAD) and DNA repair alteration via topoisomerase 2B deregulation. The increased miR-101 levels were observed in the animal blood, meaning that miR-101 may be a part of a circulating mark of germ cell death. CONCLUSION miR-101-EZH2 pathway deregulation could represent a novel pathophysiological epigenetic basis for adult germ cell disease with environmental and developmental origins.
Collapse
Affiliation(s)
- Bénazir Siddeek
- Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice F-06204, France.,Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France
| | - Nadjem Lakhdari
- Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice F-06204, France.,Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France
| | - Lilia Inoubli
- Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice F-06204, France.,Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France
| | - Rachel Paul-Bellon
- Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice F-06204, France.,Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France
| | - Véronique Isnard
- Centre Hospitalier Universitaire de Nice, Pôle de Digestif-Obstétrique, Centre de Reproduction, Nice F-06202, France
| | - Emmanuelle Thibault
- Centre Hospitalier Universitaire de Nice, Pôle de Biologie, Centre de Reproduction, Nice F-06202, France
| | - André Bongain
- Centre Hospitalier Universitaire de Nice, Pôle de Digestif-Obstétrique, Centre de Reproduction, Nice F-06202, France
| | - Daniel Chevallier
- Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France.,Centre Hospitalier Universitaire de Nice, Pôle d'Urologie, Service d'Urologie, Nice F-06202, France
| | - Emanuela Repetto
- Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France.,Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 10, Nice F-06204, France
| | - Michele Trabucchi
- Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France.,Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 10, Nice F-06204, France
| | - Jean-François Michiels
- Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France.,Centre Hospitalier Universitaire de Nice, Pôle de Biologie, Service d'Anatomie et de Cytologie Pathologiques, Nice F-06202, France
| | - Catherine Yzydorczyk
- Division of Paediatrics & DOHaD Laboratory, CHUV & University of Lausanne, CH-1011, Switzerland
| | - Umberto Simeoni
- Division of Paediatrics & DOHaD Laboratory, CHUV & University of Lausanne, CH-1011, Switzerland
| | | | - Claire Mauduit
- Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice F-06204, France.,Université Lyon 1, UFR Médecine Lyon Sud, Lyon F-69921, France.,Hospices Civils de Lyon, Hopital Lyon Sud, Laboratoire d'Anatomie et de Cytologie Pathologiques, Pierre-Bénite F-69495, France
| | - Mohamed Benahmed
- Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice F-06204, France.,Université de Nice Sophia-Antipolis, Unité de Formation et de Recherche (UFR) Médecine, Nice F-06000, France.,Centre Hospitalier Universitaire de Nice, Département de Recherche Clinique et d'Innovation, Nice F-06001, France
| |
Collapse
|
13
|
Volle DH. Nuclear receptors as pharmacological targets, where are we now? Cell Mol Life Sci 2016; 73:3777-80. [PMID: 27506618 PMCID: PMC11108428 DOI: 10.1007/s00018-016-2327-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 08/04/2016] [Indexed: 01/25/2023]
Abstract
Knowledge of integrative physiology is a major challenge for scientists, as even small deregulation could lead to diseases. Cells communicate with each other to control many processes such as growth, migration, survival, or differentiation. Such interaction could be achieved via several mechanisms either through cell-cell interactions and/or through the signaling of molecules that bind to receptors on the membrane or in the target cells. The produced molecules could have either autocrine, paracrine stimulations, or even act on distant organs (endocrine signaling).
Collapse
Affiliation(s)
- David H Volle
- INSERM U 1103, Génétique Reproduction et Développement (GReD), Campus Universitaire des Cézeaux, 10 avenue Blaise Pascal, TSA 60026, CS 60026, 63178, Aubière Cedex, France.
- Université Clermont Auvergne, GReD, 63000, Clermont-Ferrand, France.
- Université Clermont Auvergne, GReD, 63170, Aubière, France.
- CNRS, UMR 6293, GReD, 63170, Aubière, France.
| |
Collapse
|
14
|
Mauduit C, Siddeek B, Benahmed M. Origine développementale et environnementale de l’infertilité masculine. Med Sci (Paris) 2016; 32:45-50. [DOI: 10.1051/medsci/20163201008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
|
15
|
Yin L, Zheng LJ, Jiang X, Liu WB, Han F, Cao J, Liu JY. Effects of Low-Dose Diethylstilbestrol Exposure on DNA Methylation in Mouse Spermatocytes. PLoS One 2015; 10:e0143143. [PMID: 26588706 PMCID: PMC4654501 DOI: 10.1371/journal.pone.0143143] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 10/30/2015] [Indexed: 12/31/2022] Open
Abstract
Evidence from previous studies suggests that the male reproductive system can be disrupted by fetal or neonatal exposure to diethylstilbestrol (DES). However, the molecular basis for this effect remains unclear. To evaluate the effects of DES on mouse spermatocytes and to explore its potential mechanism of action, the levels of DNA methyltransferases (DNMTs) and DNA methylation induced by DES were detected. The results showed that low doses of DES inhibited cell proliferation and cell cycle progression and induced apoptosis in GC-2 cells, an immortalized mouse pachytene spermatocyte-derived cell line, which reproduces primary cells responses to E2. Furthermore, global DNA methylation levels were increased and the expression levels of DNMTs were altered in DES-treated GC-2 cells. A total of 141 differentially methylated DNA sites were detected by microarray analysis. Rxra, an important component of the retinoic acid signaling pathway, and mybph, a RhoA pathway-related protein, were found to be hypermethylated, and Prkcd, an apoptosis-related protein, was hypomethylated. These results showed that low-dose DES was toxic to spermatocytes and that DNMT expression and DNA methylation were altered in DES-exposed cells. Taken together, these data demonstrate that DNA methylation likely plays an important role in mediating DES-induced spermatocyte toxicity in vitro.
Collapse
Affiliation(s)
- Li Yin
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Li-juan Zheng
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
- Gansu People’s Hospital, Lanzhou, China
| | - Xiao Jiang
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Wen-bin Liu
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Fei Han
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Jia Cao
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Jin-yi Liu
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| |
Collapse
|
16
|
Bile Acid Alters Male Mouse Fertility in Metabolic Syndrome Context. PLoS One 2015; 10:e0139946. [PMID: 26439743 PMCID: PMC4595338 DOI: 10.1371/journal.pone.0139946] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 09/18/2015] [Indexed: 12/25/2022] Open
Abstract
Bile acids have recently been demonstrated as molecules with endocrine activities controlling several physiological functions such as immunity and glucose homeostases. They act mainly through two receptors, the nuclear receptor Farnesol-X-Receptor alpha (FXRα) and the G-protein coupled receptor (TGR5). These recent studies have led to the idea that molecules derived from bile acids (BAs) and targeting their receptors must be good targets for treatment of metabolic diseases such as obesity or diabetes. Thus it might be important to decipher the potential long term impact of such treatment on different physiological functions. Indeed, BAs have recently been demonstrated to alter male fertility. Here we demonstrate that in mice with overweight induced by high fat diet, BA exposure leads to increased rate of male infertility. This is associated with the altered germ cell proliferation, default of testicular endocrine function and abnormalities in cell-cell interaction within the seminiferous epithelium. Even if the identification of the exact molecular mechanisms will need more studies, the present results suggest that both FXRα and TGR5 might be involved. We believed that this work is of particular interest regarding the potential consequences on future approaches for the treatment of metabolic diseases.
Collapse
|
17
|
Pubertal exposure to di-(2-ethylhexyl)-phthalate inhibits G9a-mediated histone methylation during spermatogenesis in mice. Arch Toxicol 2015; 90:955-69. [DOI: 10.1007/s00204-015-1529-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 05/05/2015] [Indexed: 01/30/2023]
|
18
|
The history of Distilbène® (Diethylstilbestrol) told to grandchildren--the transgenerational effect. ANNALES D'ENDOCRINOLOGIE 2015; 76:253-9. [PMID: 25934356 DOI: 10.1016/j.ando.2015.03.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 03/02/2015] [Accepted: 03/11/2015] [Indexed: 11/21/2022]
Abstract
The Distilbène® story is a dramatic episode which belongs to the history of medicine. It provided several useful lessons such as the importance of evidence-based medicine and the hazard to develop treatments during pregnancy without careful animal verifications. However, this experience has also provided unexpected progress by suggesting new pathophysiological concepts: fetal programming of adult diseases and/or transgenerational transmission of environmental effects through epigenetic modifications.
Collapse
|
19
|
Vega A, Martinot E, Baptissart M, De Haze A, Saru JP, Baron S, Caira F, Schoonjans K, Lobaccaro JMA, Volle DH. Identification of the link between the hypothalamo-pituitary axis and the testicular orphan nuclear receptor NR0B2 in adult male mice. Endocrinology 2015; 156:660-9. [PMID: 25426871 DOI: 10.1210/en.2014-1418] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The small heterodimer partner (SHP, nuclear receptor subfamily 0, group B, member 2; NR0B2) is an atypical nuclear receptor known mainly for its role in bile acid homeostasis in the enterohepatic tract. We previously showed that NR0B2 controls testicular functions such as testosterone synthesis. Moreover, NR0B2 mediates the deleterious testicular effects of estrogenic endocrine disruptors leading to infertility. The endocrine homeostasis is essential for health, because it controls many physiological functions. This is supported by a large number of studies demonstrating that alterations of steroid activity lead to several kinds of diseases such as obesity and infertility. Within the testis, the functions of the Leydig cells are mainly controlled by the hypothalamo-pituitary axis via LH/chorionic gonadotropin (CG). Here, we show that LH/CG represses Nr0b2 expression through the protein kinase A-AMP protein kinase pathway. Moreover, using a transgenic mouse model invalidated for Nr0b2, we point out that NR0B2 mediates the repression of testosterone synthesis and subsequent germ cell apoptosis induced by exposure to anti-GnRH compound. Together, our data demonstrate a new link between hypothalamo-pituitary axis and NR0B2 in testicular androgen metabolism, making NR0B2 a major actor of testicular physiology in case of alteration of LH/CG levels.
Collapse
Affiliation(s)
- Aurélie Vega
- Inserm Unit 1103 (A.V., E.M., M.B., A.D.H., J.-P.S., S.B., F.C., J.-M.A.L., D.H.V.), Génétique Reproduction et Développement (GReD), Boîte Postale 80026; Clermont Université (A.V., E.M., M.B., A.D.H., J.-P.S., S.B., F.C., J.-M.A.L., D.H.V.), Université Blaise Pascal, GReD; and Centre National de la Recherche Scientifique (A.V., E.M., M.B., A.D.H., J.-P.S., S.B., F.C., J.-M.A.L., D.H.V.), Unité Mixte de recherche 6293, GReD, F-63170 Aubière Cedex, France; Centre de Recherche en Nutrition Humaine d'Auvergne (A.V., E.M., M.B., A.D.H., J.-P.S., S.B., F.C., J.-M.A.L., D.H.V.), F-63000 Clermont-Ferrand Cedex, France; and Institute of Bioengineering (K.S.), Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Rouiller-Fabre V, Guerquin MJ, N’Tumba-Byn T, Muczynski V, Moison D, Tourpin S, Messiaen S, Habert R, Livera G. Nuclear receptors and endocrine disruptors in fetal and neonatal testes: a gapped landscape. Front Endocrinol (Lausanne) 2015; 6:58. [PMID: 25999913 PMCID: PMC4423451 DOI: 10.3389/fendo.2015.00058] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 04/07/2015] [Indexed: 11/28/2022] Open
Abstract
During the last decades, many studies reported that male reproductive disorders are increasing among humans. It is currently acknowledged that these abnormalities can result from fetal exposure to environmental chemicals that are progressively becoming more concentrated and widespread in our environment. Among the chemicals present in the environment (air, water, food, and many consumer products), several can act as endocrine disrupting compounds (EDCs), thus interfering with the endocrine system. Phthalates, bisphenol A (BPA), and diethylstilbestrol (DES) have been largely incriminated, particularly during the fetal and neonatal period, due to their estrogenic and/or anti-androgenic properties. Indeed, many epidemiological and experimental studies have highlighted their deleterious impact on fetal and neonatal testis development. As EDCs can affect many different genomic and non-genomic pathways, the mechanisms underlying the adverse effects of EDC exposure are difficult to elucidate. Using literature data and results from our laboratory, in the present review, we discuss the role of classical nuclear receptors (genomic pathway) in the fetal and neonatal testis response to EDC exposure, particularly to phthalates, BPA, and DES. Among the nuclear receptors, we focused on some of the most likely candidates, such as peroxisome-proliferator activated receptor (PPAR), androgen receptor (AR), estrogen receptors (ERα and β), liver X receptors (LXR), and small heterodimer partner (SHP). First, we describe the expression and potential functions (based on data from studies using receptor agonists and mouse knockout models) of these nuclear receptors in the developing testis. Then, for each EDC studied, we summarize the main evidences indicating that the reprotoxic effect of each EDC under study is mediated through a specific nuclear receptor(s). We also point-out the involvement of other receptors and nuclear receptor-independent pathways.
Collapse
Affiliation(s)
- Virginie Rouiller-Fabre
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
- *Correspondence: Virginie Rouiller-Fabre, Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, CEA, DSV, iRCM, SCSR, LDG, BP6, Fontenay aux Roses F-92265, France,
| | - Marie Justine Guerquin
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Thierry N’Tumba-Byn
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Vincent Muczynski
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Delphine Moison
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Sophie Tourpin
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Sébastien Messiaen
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - René Habert
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Gabriel Livera
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| |
Collapse
|
21
|
Baptissart M, Vega A, Martinot E, Volle DH. Male fertility: Is spermiogenesis the critical step for answering biomedical issues? SPERMATOGENESIS 2014; 3:e24114. [PMID: 23885302 PMCID: PMC3710220 DOI: 10.4161/spmg.24114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 02/13/2013] [Accepted: 02/25/2013] [Indexed: 12/22/2022]
Abstract
Regarding male fertility, biomedical issues have opposite goals to treat infertility or develop contraceptive drugs. Recently, the identification of the molecular mechanisms involved in germ cell differentiation suggest that spermiogenesis has to be put at the crossroad to reach these goals. Concerning fertility issues, citizens in our modern world are schizophrenic. On one side, couples have the possibility to control conception; and on the other side, more and more couples suffer from the misfortune of being infertile. These two societal problems lead to intensive research and conflicting government policies. However, these opposing goals rely on a better understanding of germ cell differentiation.
Collapse
Affiliation(s)
- Marine Baptissart
- Inserm U 1103; Génétique Reproduction et Développement (GReD); F-63177 AUBIERE, France ; Clermont Université; Université Blaise Pascal; GReD, BP 10448; F-63000 CLERMONT-FERRAND, France ; CNRS; UMR 6293; GReD; F-63177 AUBIERE, France ; Centre de Recherche en Nutrition Humaine d'Auvergne; F-63000 CLERMONT-FERRAND, France
| | | | | | | |
Collapse
|
22
|
Vega A, Baptissart M, Martinot E, Saru JP, Baron S, Schoonjans K, Volle DH. Hepatotoxicity induced by neonatal exposure to diethylstilbestrol is maintained throughout adulthood via the nuclear receptor SHP. Expert Opin Ther Targets 2014; 18:1367-76. [PMID: 25263461 DOI: 10.1517/14728222.2014.964209] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Liver physiology is sensitive to estrogens, which suggests that the liver might be a target of estrogenic endocrine disrupters (EED). However, the long-term consequences of neonatal exposure to EED on liver physiology have rarely been studied. The nuclear receptor small heterodimer partner (SHP) mediates the deleterious effects of neonatal exposure to diethylstilbestrol (DES) on male fertility. OBJECTIVES As SHP is involved in liver homeostasis, we aimed to determine whether neonatal estrogenic exposure also affected adult liver physiology through SHP. Male mouse pups were exposed to DES in the first 5 days of life. RESULTS DES exposure leads to alterations in the postnatal bile acid (BA) synthesis pathway. Neonatal DES-exposure affected adult liver BA metabolism and subsequently triglyceride (TG) homeostasis. The wild-type males neonatally exposed to DES exhibited increased liver weight and altered liver histology in the adult age. The use of deficient male mice revealed that SHP mediates the deleterious effects of DES treatment. These long-term effects of DES were associated with differently timed alterations in the expression of epigenetic factors. CONCLUSIONS However, the molecular mechanisms by which neonatal exposure persist to affect the adult liver physiology remain to be defined. In conclusion, we demonstrate that neonatal DES exposure alters adult hepatic physiology in an SHP-dependent manner.
Collapse
Affiliation(s)
- Aurélie Vega
- INSERM U 1103, Génétique Reproduction et Développement (GReD) , BP 80026, F-63171 Aubière Cedex , France +33 4 73407415 ; +33 4 73407042 ;
| | | | | | | | | | | | | |
Collapse
|
23
|
Baptissart M, Vega A, Martinot E, Pommier AJ, Houten SM, Marceau G, de Haze A, Baron S, Schoonjans K, Lobaccaro JMA, Volle DH. Bile acids alter male fertility through G-protein-coupled bile acid receptor 1 signaling pathways in mice. Hepatology 2014; 60:1054-65. [PMID: 24798773 DOI: 10.1002/hep.27204] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 05/01/2014] [Indexed: 12/12/2022]
Abstract
UNLABELLED Bile acids (BAs) are signaling molecules that are involved in many physiological functions, such as glucose and energy metabolism. These effects are mediated through activation of the nuclear and membrane receptors, farnesoid X receptor (FXR-α) and TGR5 (G-protein-coupled bile acid receptor 1; GPBAR1). Although both receptors are expressed within the testes, the potential effect of BAs on testis physiology and male fertility has not been explored thus far. Here, we demonstrate that mice fed a diet supplemented with cholic acid have reduced fertility subsequent to testicular defects. Initially, germ cell sloughing and rupture of the blood-testis barrier occur and are correlated with decreased protein accumulation of connexin-43 (Cx43) and N-cadherin, whereas at later stages, apoptosis of spermatids is observed. These abnormalities are associated with increased intratesticular BA levels in general and deoxycholic acid, a TGR5 agonist, in particular. We demonstrate here that Tgr5 is expressed within the germ cell lineage, where it represses Cx43 expression through regulation of the transcriptional repressor, T-box transcription factor 2 gene. Consistent with this finding, mice deficient for Tgr5 are protected against the deleterious testicular effects of BA exposure. CONCLUSIONS These data identify the testis as a new target of BAs and emphasize TGR5 as a critical element in testicular pathophysiology. This work may open new perspectives on the potential effect of BAs on testis physiology during liver dysfunction.
Collapse
Affiliation(s)
- Marine Baptissart
- INSERM U 1103, Génétique Reproduction et Développement (GReD), Aubière, France; Clermont Université, Université Blaise, Pascal, GReD, BP 80026, Aubière, France; CNRS, UMR 6293, GReD, Aubière, France; Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Transforming growth factor-β1 signaling represses testicular steroidogenesis through cross-talk with orphan nuclear receptor Nur77. PLoS One 2014; 9:e104812. [PMID: 25140527 PMCID: PMC4139307 DOI: 10.1371/journal.pone.0104812] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 07/15/2014] [Indexed: 11/25/2022] Open
Abstract
Transforming growth factor- β1 (TGF-β1) has been reported to inhibit luteinizing hormone (LH) mediated-steroidogenesis in testicular Leydig cells. However, the mechanism by which TGF-β1 controls the steroidogenesis in Leydig cells is not well understood. Here, we investigated the possibility that TGF-β1 represses steroidogenesis through cross-talk with the orphan nuclear receptor Nur77. Nur77, which is induced by LH/cAMP signaling, is one of major transcription factors that regulate the expression of steroidogenic genes in Leydig cells. TGF-β1 signaling inhibited cAMP-induced testosterone production and the expression of steroidogenic genes such as P450c17, StAR and 3β-HSD in mouse Leydig cells. Further, TGF-β1/ALK5 signaling repressed cAMP-induced and Nur77-activated promoter activity of steroidogenic genes. In addition, TGF-β1/ALK5-activated Smad3 repressed Nur77 transactivation of steroidogenic gene promoters by interfering with Nur77 binding to DNA. In primary Leydig cells isolated from Tgfbr2flox/flox Cyp17iCre mice, TGF-β1-mediated repression of cAMP-induced steroidogenic gene expression was significantly less than that in primary Leydig cells from Tgfbr2flox/flox mice. Taken together, these results suggest that TGF-β1/ALK5/Smad3 signaling represses the expression of steroidogenic genes via the suppression of Nur77 transactivation in testicular Leydig cells. These findings may provide a molecular mechanism involved in the TGF-β1-mediated repression of testicular steroidogenesis.
Collapse
|
25
|
Dong RR, Yang SJ, Feng RJ, Fang LL, Sun YL, Zhang YG, Xie XJ, Wang DS. Complete feminization of catfish by feeding Limnodilus, an annelid worm collected in contaminated streams. ENVIRONMENTAL RESEARCH 2014; 133:371-379. [PMID: 24952460 DOI: 10.1016/j.envres.2014.05.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 05/10/2014] [Accepted: 05/16/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Feminization of animals derived from areas polluted by endocrine disrupting chemicals (EDCs) has been observed in all classes of vertebrates. However, feminization of artificially reared offspring by feeding of specific living organisms has never been reported. METHODS Different food (including Limnodilus spp collected from the wild) and time treatment were applied to southern catfish. In addition, EDCs in Limnodilus spp., an annelid worm collected from wild contaminated small streams, was detected by LC-MS (Liquid chromatography-mass spectrometry). Serum estradiol-17β and vitellogenin (VTG) levels and gonadal Sf1, Dmrt1, Foxl2, Cyp19a1a expression levels in the catfish were measured through Estradiol/VTG EIA Kit and real-time PCR. RESULTS Here we report that feeding of Limnodilus spp. resulted in complete feminization of southern catfish, which has a 1:1 sex ratio in wild conditions. Furthermore, HPLC analysis showed that the extraction of Limnodilus spp. contained EDCs, including bisphenol A (BPA), diethylstilbestrol (DES), 4-tert-octylphenol (4-t-OP) and 4-nonylphenol (4-NP), which were further confirmed by LC-MS. Feeding southern catfish using commercial diets sprayed with EDCs cocktail also resulted in 100% female, whereas the control fish displayed approximate 1:1 sex ratio. Limnodilus spp. fed fish displayed similar serum estradiol-17β and VTG levels and gonadal Sf1, Dmrt1, Foxl2, Cyp19a1a expression levels to those of female control. CONCLUSION These results demonstrated that EDCs in Limnodilus spp. cause southern catfish feminization by affecting aromatase expression and endogenous estrogen level. This is the first report showing that feeding of any living organism resulted in complete feminization of a vertebrate.
Collapse
Affiliation(s)
- Ran-ran Dong
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Shi-jie Yang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China; Department of Hematology, Xinqiao Hospital, The Third Military Medical University, Xinqiao Street, Chongqing, China
| | - Rui-juan Feng
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Ling-ling Fang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Yun-lv Sun
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Yao-guang Zhang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Xiao-jun Xie
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - De-shou Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China.
| |
Collapse
|
26
|
Du X, Zhang H, Liu Y, Yu W, Huang C, Li X. Perinatal exposure to low-dose methoxychlor impairs testicular development in C57BL/6 mice. PLoS One 2014; 9:e103016. [PMID: 25048109 PMCID: PMC4105541 DOI: 10.1371/journal.pone.0103016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 06/25/2014] [Indexed: 01/08/2023] Open
Abstract
Methoxychlor (MXC), an organochlorine pesticide, has adverse effects on male reproduction at toxicological doses. Humans and wild animals are exposed to MXC mostly through contaminated dietary intake. Higher concentrations of MXC have been found in human milk, raising the demand for the risk assessment of offspring after maternal exposure to low doses of MXC. In this study, pregnant mice (F0) were given intraperitoneal daily evening injections of 1 mg/kg/d MXC during their gestational (embryonic day 0.5, E0.5) and lactational periods (postnatal day 21.5, P21.5), and the F1 males were assessed. F1 testes were collected at P0.5, P21.5 and P45.5. Maternal exposure to MXC disturbed the testicular development. Serum testosterone levels decreased, whereas estradiol levels increased. To understand the molecular mechanisms of exposure to MXC in male reproduction, the F1 testes were examined for changes in the expression of steroidogenesis- and spermatogenesis- related genes. RT-PCR analysis demonstrated that MXC significantly decreased Cyp11a1 and increased Cyp19a1; furthermore, it downregulated certain spermatogenic genes (Dazl, Boll, Rarg, Stra8 and Cyclin-a1). In summary, perinatal exposure to low-dose MXC disturbs the testicular development in mice. This animal study of exposure to low-dose MXC in F1 males suggests similar dysfunctional effects on male reproduction in humans.
Collapse
Affiliation(s)
- Xiaohong Du
- State Key Laboratory of AgroBiotechnology, Faculty of Biological Sciences, China Agricultural University, Beijing, China
| | - Hua Zhang
- State Key Laboratory of AgroBiotechnology, Faculty of Biological Sciences, China Agricultural University, Beijing, China
| | - Yuanwu Liu
- State Key Laboratory of AgroBiotechnology, Faculty of Biological Sciences, China Agricultural University, Beijing, China
| | - Wanpeng Yu
- State Key Laboratory of AgroBiotechnology, Faculty of Biological Sciences, China Agricultural University, Beijing, China
| | - Chaobin Huang
- State Key Laboratory of AgroBiotechnology, Faculty of Biological Sciences, China Agricultural University, Beijing, China
| | - Xiangdong Li
- State Key Laboratory of AgroBiotechnology, Faculty of Biological Sciences, China Agricultural University, Beijing, China
| |
Collapse
|
27
|
Park E, Kim Y, Lee HJ, Lee K. Differential regulation of steroidogenic enzyme genes by TRα signaling in testicular Leydig cells. Mol Endocrinol 2014; 28:822-33. [PMID: 24725081 DOI: 10.1210/me.2013-1150] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Thyroid hormone signaling has long been implicated in mammalian testicular function, affecting steroidogenesis in testicular Leydig cells. However, its molecular mechanism is not well understood. Here, we investigated the molecular action of thyroid hormone receptor-α (TRα) on mouse testicular steroidogenesis. TRα/thyroid hormone (T3) signaling differentially affected the expression of steroidogenic enzyme genes, mainly regulating their promoter activity. TRα directly regulated the promoter activity of the cytochrome P450 17α-hydroxylase/C17-20 lyase gene, elevating its expression in the presence of T3. TRα also indirectly regulated the expression of steroidogenic enzyme genes, such as steroidogenic acute regulatory protein and 3β-hydroxysteroid dehydrogenase, by modulating the transactivation of Nur77 on steroidogenic enzyme gene promoters through protein-protein interaction. TRα enhanced Nur77 transactivation by excluding histone deacetylases from Nur77 in the absence of T3, whereas liganded TRα inhibited Nur77 transactivation, likely due to interfering with the recruitment of coactivator such as the steroid receptor coactivator-1 to Nur77. Together, these findings suggest a role of TRα/T3 in testicular steroidogenesis and may provide molecular mechanisms for the differential regulation of steroidogenic enzyme genes by thyroid hormone.
Collapse
Affiliation(s)
- Eunsook Park
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju, Republic of Korea
| | | | | | | |
Collapse
|
28
|
Liver X receptors interfere with the deleterious effect of diethylstilbestrol on testicular physiology. Biochem Biophys Res Commun 2014; 446:656-62. [DOI: 10.1016/j.bbrc.2013.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 12/02/2013] [Indexed: 01/30/2023]
|
29
|
Cobellis G, Noviello C, Nino F, Romano M, Mariscoli F, Martino A, Parmeggiani P, Papparella A. Spermatogenesis and cryptorchidism. Front Endocrinol (Lausanne) 2014; 5:63. [PMID: 24829558 PMCID: PMC4013472 DOI: 10.3389/fendo.2014.00063] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 04/14/2014] [Indexed: 12/24/2022] Open
Abstract
Cryptorchidism represents the most common endocrine disease in boys, with infertility more frequently observed in bilateral forms. It is also known that undescended testes, if untreated, lead to an increased risk of testicular tumors, usually seminomas, arising from mutant germ cells. In normal testes, germ cell development is an active process starting in the first months of life when the neonatal gonocytes transform into adult dark (AD) spermatogonia. These cells are now thought to be the stem cells useful to support spermatogenesis. Several researches suggest that AD spermatogonia form between 3 and 9 months of age. Not all the neonatal gonocytes transform into AD spermatogonia; indeed, the residual gonocytes undergo involution by apoptosis. In the undescended testes, these transformations are inhibited leading to a deficient pool of stem cells for post pubertal spermatogenesis. Early surgical intervention in infancy may allow the normal development of stem cells for spermatogenesis. Moreover, it is very interesting to note that intra-tubular carcinoma in situ in the second and third decades have enzymatic markers similar to neonatal gonocytes suggesting that these cells fail transformation into AD spermatogonia and likely generate testicular cancer (TC) in cryptorchid men. Orchidopexy between 6 and 12 months of age is recommended to maximize the future fertility potential and decrease the TC risk in adulthood.
Collapse
Affiliation(s)
- Giovanni Cobellis
- Paediatric Surgery, Salesi Children’s Hospital, Università Politecnica delle Marche, Ancona, Italy
- *Correspondence: Giovanni Cobellis, Paediatric Surgery, Salesi Children’s Hospital, Università Politecnica delle Marche, Via Corridoni, Ancona 11, Italy e-mail:
| | - Carmine Noviello
- Paediatric Surgery, Salesi Children’s Hospital, Università Politecnica delle Marche, Ancona, Italy
| | - Fabiano Nino
- Paediatric Surgery, Salesi Children’s Hospital, Università Politecnica delle Marche, Ancona, Italy
| | - Mercedes Romano
- Paediatric Surgery, Salesi Children’s Hospital, Università Politecnica delle Marche, Ancona, Italy
| | - Francesca Mariscoli
- Paediatric Surgery, Salesi Children’s Hospital, Università Politecnica delle Marche, Ancona, Italy
| | - Ascanio Martino
- Paediatric Surgery, Salesi Children’s Hospital, Università Politecnica delle Marche, Ancona, Italy
| | - Pio Parmeggiani
- Paediatric Surgery, Department of Paediatrics, Faculty of Medicine, Second University of Naples, Naples, Italy
| | - Alfonso Papparella
- Paediatric Surgery, Department of Paediatrics, Faculty of Medicine, Second University of Naples, Naples, Italy
| |
Collapse
|
30
|
Noh JR, Hwang JH, Kim YH, Kim KS, Gang GT, Kim SW, Kim DK, Shong M, Lee IK, Choi HS, Lee CH. The orphan nuclear receptor small heterodimer partner negatively regulates pancreatic beta cell survival and hyperglycemia in multiple low-dose streptozotocin-induced type 1 diabetic mice. Int J Biochem Cell Biol 2013; 45:1538-45. [DOI: 10.1016/j.biocel.2013.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 05/02/2013] [Accepted: 05/06/2013] [Indexed: 12/19/2022]
|
31
|
Bisphenol A: An endocrine and metabolic disruptor. ANNALES D'ENDOCRINOLOGIE 2013; 74:211-20. [DOI: 10.1016/j.ando.2013.04.002] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 04/24/2013] [Indexed: 11/20/2022]
|
32
|
Liu C, Duan W, Li R, Xu S, Zhang L, Chen C, He M, Lu Y, Wu H, Pi H, Luo X, Zhang Y, Zhong M, Yu Z, Zhou Z. Exposure to bisphenol A disrupts meiotic progression during spermatogenesis in adult rats through estrogen-like activity. Cell Death Dis 2013; 4:e676. [PMID: 23788033 PMCID: PMC3702305 DOI: 10.1038/cddis.2013.203] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 05/07/2013] [Accepted: 05/08/2013] [Indexed: 12/11/2022]
Abstract
The effect of bisphenol A (BPA) on the reproductive system is highly debated but has been associated with meiotic abnormalities. However, evidence is lacking with regard to the mechanisms involved. In order to explore the underlying mechanisms of BPA-induced meiotic abnormalities in adult male rats, we exposed 9-week-old male Wistar rats to BPA by gavage at 0, 2, 20 or 200 μg/kg body weight (bw)/day for 60 consecutive days. 17β-Estradiol (E2) was administered at 10 μg/kg bw/day as the estrogenic positive control. Treatments with 200 μg/kg bw/day of BPA and E2 significantly decreased sperm counts and inhibited spermiation, characterized by an increase in stage VII and decrease in stage VIII in the seminiferous epithelium. This was concomitant with a disruption in the progression of meiosis I and the persistence of meiotic DNA strand breaks in pachytene spermatocytes,and the ataxia-telangiectasia-mutated and checkpoint kinase 2 signal pathway was also activated; Eventually, germ cell apoptosis was triggered as evaluated by terminal dUTP nick-end labeling assay and western blot for caspase 3. Using the estrogen receptor (ER) antagonist ICI 182780, we determined that ER signaling mediated BPA-induced meiotic disruption and reproductive impairment. Our results suggest that ER signaling-mediated meiotic disruption may be a major contributor to the molecular events leading to BPA-related male reproductive disorders. These rodent data support the growing association between BPA exposure and the rapid increase in the incidence of male reproductive disorders.
Collapse
Affiliation(s)
- C Liu
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - W Duan
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - R Li
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - S Xu
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - L Zhang
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - C Chen
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - M He
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - Y Lu
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - H Wu
- Department of Occupational and Environmental Health, School of Public Health and Health Management, Chongqing Medical University, Chongqing, People's Republic of China
| | - H Pi
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - X Luo
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - Y Zhang
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - M Zhong
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - Z Yu
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| | - Z Zhou
- Department of Occupational Health, Third Military Medical University, Chongqing, People,s Republic of China
| |
Collapse
|
33
|
Mitchell RT, Sharpe RM, Anderson RA, McKinnell C, Macpherson S, Smith LB, Wallace WHB, Kelnar CJH, van den Driesche S. Diethylstilboestrol exposure does not reduce testosterone production in human fetal testis xenografts. PLoS One 2013; 8:e61726. [PMID: 23620786 PMCID: PMC3631175 DOI: 10.1371/journal.pone.0061726] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 03/11/2013] [Indexed: 01/27/2023] Open
Abstract
In rodents, in utero exposure to exogenous estrogens including diethylstilboestrol (DES) results in major suppression of steroidogenesis in fetal testes. Whether similar effects occur in the human fetal testis is equivocal. Based on the results of the rodent studies, we hypothesised that exposure of human fetal testes to DES would result in a reduction in testosterone production. We show, using a xenograft approach, that testosterone production is not reduced in human fetal testis following DES exposure. Human fetal testes (15–19 weeks’ gestation, n = 6) were xenografted into castrate male nude mice which were then treated for 35 days with vehicle or 100 µg/kg DES three times a week. For comparison, similar treatment was applied to pregnant rats from e13.5–e20.5 and effects on fetal testes evaluated at e21.5. Xenograft testosterone production was assessed by measuring host seminal vesicle (SV) weights as an indirect measure over the entire grafting period, and single measurement of serum testosterone at termination. Human fetal testis xenografts showed similar survival in DES and vehicle-exposed hosts. SV weight (44.3 v 26.6 mg, p = 0.01) was significantly increased in DES compared to vehicle-exposed hosts, respectively, indicating an overall increase in xenograft testosterone production over the grafting period, whilst serum testosterone at termination was unchanged. In contrast intra-testicular testosterone levels were reduced by 89%, in fetal rats exposed to DES. In rats, DES effects are mediated via Estrogen Receptor α (ESR1). We determined ESR1 protein and mRNA expression in human and rat fetal testis. ESR1 was expressed in rat, but not in human, fetal Leydig cells. We conclude that human fetal testis exposure to DES does not impair testosterone production as it does in rats, probably because ESR1 is not expressed in human fetal Leydig cells. This indicates that DES exposure is likely to pose minimal risk to masculinization of the human fetus.
Collapse
Affiliation(s)
- Rod T Mitchell
- MRC Centre for Reproductive Health, Edinburgh University, Edinburgh, Scotland, UK.
| | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Maqdasy S, Baptissart M, Vega A, Baron S, Lobaccaro JMA, Volle DH. Cholesterol and male fertility: what about orphans and adopted? Mol Cell Endocrinol 2013; 368:30-46. [PMID: 22766106 DOI: 10.1016/j.mce.2012.06.011] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 06/20/2012] [Accepted: 06/21/2012] [Indexed: 12/24/2022]
Abstract
The link between cholesterol homeostasis and male fertility has been clearly suggested in patients who suffer from hyperlipidemia and metabolic syndrome. This has been confirmed by the generation of several transgenic mouse models or in animals fed with high cholesterol diet. Next to the alteration of the endocrine signaling pathways through steroid receptors (androgen and estrogen receptors); "orphan" and "adopted" nuclear receptors, such as the Liver X Receptors (LXRs), the Proliferating Peroxisomal Activated Receptors (PPARs) or the Liver Receptor Homolog-1 (LRH-1), have been involved in this cross-talk. These transcription factors show distinct expression patterns in the male genital tract, explaining the large panel of phenotypes observed in transgenic male mice and highlighting the importance of lipid homesostasis and the complexity of the molecular pathways involved. Increasing our knowledge of the roles of these nuclear receptors in male germ cell differentiation could help in proposing new approaches to either treat infertile men or define new strategies for contraception.
Collapse
|
35
|
Muczynski V, Lecureuil C, Messiaen S, Guerquin MJ, N’Tumba-Byn T, Moison D, Hodroj W, Benjelloun H, Baijer J, Livera G, Frydman R, Benachi A, Habert R, Rouiller-Fabre V. Cellular and molecular effect of MEHP Involving LXRα in human fetal testis and ovary. PLoS One 2012; 7:e48266. [PMID: 23118965 PMCID: PMC3484128 DOI: 10.1371/journal.pone.0048266] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Accepted: 09/21/2012] [Indexed: 01/26/2023] Open
Abstract
Background Phthalates have been shown to have reprotoxic effects in rodents and human during fetal life. Previous studies indicate that some members of the nuclear receptor (NR) superfamilly potentially mediate phthalate effects. This study aimed to assess if expression of these nuclear receptors are modulated in the response to MEHP exposure on the human fetal gonads in vitro. Methodology/Principal Findings Testes and ovaries from 7 to 12 gestational weeks human fetuses were exposed to 10−4M MEHP for 72 h in vitro. Transcriptional level of NRs and of downstream genes was then investigated using TLDA (TaqMan Low Density Array) and qPCR approaches. To determine whether somatic or germ cells of the testis are involved in the response to MEHP exposure, we developed a highly efficient cytometric germ cell sorting approach. In vitro exposure of fetal testes and ovaries to MEHP up-regulated the expression of LXRα, SREBP members and of downstream genes involved in the lipid and cholesterol synthesis in the whole gonad. In sorted testicular cells, this effect is only observable in somatic cells but not in the gonocytes. Moreover, the germ cell loss induced by MEHP exposure, that we previously described, is restricted to the male gonad as oogonia density is not affected in vitro. Conclusions/Significance We evidenced for the first time that phthalate increases the levels of mRNA for LXRα, and SREBP members potentially deregulating lipids/cholesterol synthesis in human fetal gonads. Interestingly, this novel effect is observable in both male and female whereas the germ cell apoptosis is restricted to the male gonad. Furthermore, we presented here a novel and potentially very useful flow cytometric cell sorting method to analyse molecular changes in germ cells versus somatic cells.
Collapse
Affiliation(s)
- Vincent Muczynski
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - Charlotte Lecureuil
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - Sébastien Messiaen
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - Marie-Justine Guerquin
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - Thierry N’Tumba-Byn
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - Delphine Moison
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - Wassim Hodroj
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - Hinde Benjelloun
- Flow Cytometry Facility, CEA – DSV/iRCM/SCSR, F-92265 Fontenay aux Roses, France
| | - Jan Baijer
- Flow Cytometry Facility, CEA – DSV/iRCM/SCSR, F-92265 Fontenay aux Roses, France
| | - Gabriel Livera
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - René Frydman
- Service de Gynécologie-Obstétrique, Hôpital A. Béclère,- Université Paris Sud, F-92141 Clamart, France
| | - Alexandra Benachi
- Service de Gynécologie-Obstétrique, Hôpital A. Béclère,- Université Paris Sud, F-92141 Clamart, France
| | - René Habert
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
| | - Virginie Rouiller-Fabre
- University Paris Diderot, Sorbonne Paris Cité, Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France
- INSERM, Unité 967, F-92265, Fontenay aux Roses, France
- * E-mail:
| |
Collapse
|
36
|
Abstract
Histone methylation at specific lysine residues is a crucial regulatory process in transcriptional regulation. Using chromatin immunoprecipitation with microarray technology (ChIP-chip) analysis, we found that the H3K9-me2 target gene JAK2 was an important factor during differentiation of the HL-60 promyelocytic leukemia cell line by all-trans-retinoic acid (ATRA) treatment. Here, we report that the H3K9 methyltransferase G9a negatively regulated JAK2 transcription in histone methyltransferase activity and in a YY1-dependent manner during ATRA-mediated leukemia cell differentiation. We found that G9a knockdown repressed ATRA-mediated HL-60 cell differentiation. We demonstrated that G9a interacts with YY1 and is recruited to the JAK2 promoter along with corepressors, including histone deacetylase, that induced H3K9-me2. Repression of JAK2 transcription by G9a decreased H3Y41 phosphorylation and promoted inhibition of the recently identified JAK2-H3Y41P-HP1α pathway-mediated leukemogenesis.
Collapse
|
37
|
Ehrlund A, Treuter E. Ligand-independent actions of the orphan receptors/corepressors DAX-1 and SHP in metabolism, reproduction and disease. J Steroid Biochem Mol Biol 2012; 130:169-79. [PMID: 21550402 DOI: 10.1016/j.jsbmb.2011.04.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 03/11/2011] [Accepted: 04/21/2011] [Indexed: 12/11/2022]
Abstract
DAX-1 and SHP are two closely related atypical orphan members of the nuclear receptor (NR) family that make up the NR0B subfamily. They combine properties of typical NRs and of NR-associated coregulators: both carry the characteristic NR ligand-binding domain but instead of a NR DNA-binding domain they have unique N-terminal regions that contain LxxLL-related NR-binding motifs often found in coregulators. Recent structural data indicate that DAX-1 lacks a ligand-binding pocket and thus should rely on ligand-independent mechanisms of regulation. This might be true, but remains to be proven, for SHP as well. DAX-1 and SHP have in common that they act as transcriptional corepressors of cholesterol metabolism pathways that are related on a molecular level. However, the expression patterns of the two NRs are largely different, with some notable exceptions, and so are the physiological processes they regulate. DAX-1 is mainly involved in steroidogenesis and reproductive development, while SHP plays major roles in maintaining cholesterol and glucose homeostasis. This review highlights the key similarities and differences between DAX-1 and SHP with regard to structure, function and biology and considers what can be learnt from recent research advances in the field. This article is part of a Special Issue entitled 'Orphan Receptors'.
Collapse
Affiliation(s)
- Anna Ehrlund
- Center for Biosciences, Department of Biosciences and Nutrition, Karolinska Institutet, S-14183 Huddinge/Stockholm, Sweden
| | | |
Collapse
|
38
|
Meunier L, Siddeek B, Vega A, Lakhdari N, Inoubli L, Bellon RP, Lemaire G, Mauduit C, Benahmed M. Perinatal programming of adult rat germ cell death after exposure to xenoestrogens: role of microRNA miR-29 family in the down-regulation of DNA methyltransferases and Mcl-1. Endocrinology 2012; 153:1936-47. [PMID: 22334722 DOI: 10.1210/en.2011-1109] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Different studies have pointed out that developmental exposure to environmental endocrine disruptors can induce long-term testicular germ cell death probably through epigenetic mechanisms. By using a model of early neonatal post-natal day (PND) 1 to 5 exposure of male rats to a xenoestrogen, estradiol benzoate (EB), we investigated the role of microRNA and DNA methyltransferases (DNMT) on the developmental effects of EB on the adult germ cell death process. Neonatal exposure to EB induced adult germ cell apoptosis together with a dose-dependent increase in miR-29a, miR-29b, and miR-29c expression. Increased miR-29 expression resulted in a decrease in DNMT1, DNMT3a, and DNMT3b and antiapoptotic myeloid cell leukemia sequence 1 (Mcl-1) protein levels as shown in 1) germ cells of adult rats exposed neonatally to EB and 2) in spermatogonial GC-1 transfected with miR-29. The DNMT decrease was associated with a concomitant increase in transcript levels of DNA methylation target genes, such as L1td1-1 ORF1 and ORF2, Cdkn2a, and Gstp1, in correlation with their pattern of methylation. Finally, GC-1 cell lines transfection with miR-29a, miR-29b, or miR-29c undergo apoptosis evidenced by Annexin-V expression. Together, the increased miR-29 with a subsequent reduction in DNMT and Mcl-1 protein levels may represent a basis of explanation for the adult expression of the germ cell apoptosis phenotype. These observations suggest that the increased expression of the "apoptomir" miR-29 family represents the upstream mechanism identified until now that is involved in adult germ cell apoptosis induced by a neonatal hormonal disruption.
Collapse
Affiliation(s)
- Léo Meunier
- Institut National de la Santé et de la Recherche Médicale, Unité 1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice F-06204, France
| | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Feil R, Fraga MF. Epigenetics and the environment: emerging patterns and implications. Nat Rev Genet 2012; 13:97-109. [PMID: 22215131 DOI: 10.1038/nrg3142] [Citation(s) in RCA: 1178] [Impact Index Per Article: 98.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Epigenetic phenomena in animals and plants are mediated by DNA methylation and stable chromatin modifications. There has been considerable interest in whether environmental factors modulate the establishment and maintenance of epigenetic modifications, and could thereby influence gene expression and phenotype. Chemical pollutants, dietary components, temperature changes and other external stresses can indeed have long-lasting effects on development, metabolism and health, sometimes even in subsequent generations. Although the underlying mechanisms remain largely unknown, particularly in humans, mechanistic insights are emerging from experimental model systems. These have implications for structuring future research and understanding disease and development.
Collapse
Affiliation(s)
- Robert Feil
- Institute of Molecular Genetics (IGMM), CNRS UMR-5535 and University of Montpellier, 1919 route de Mende, 34293 Montpellier, France. robert.feil@igmm. cnrs.fr
| | | |
Collapse
|
40
|
Abstract
Epigenetic phenomena in animals and plants are mediated by DNA methylation and stable chromatin modifications. There has been considerable interest in whether environmental factors modulate the establishment and maintenance of epigenetic modifications, and could thereby influence gene expression and phenotype. Chemical pollutants, dietary components, temperature changes and other external stresses can indeed have long-lasting effects on development, metabolism and health, sometimes even in subsequent generations. Although the underlying mechanisms remain largely unknown, particularly in humans, mechanistic insights are emerging from experimental model systems. These have implications for structuring future research and understanding disease and development.
Collapse
Affiliation(s)
- Robert Feil
- Institute of Molecular Genetics (IGMM), CNRS UMR-5535 and University of Montpellier, 1919 route de Mende, 34293 Montpellier, France. robert.feil@igmm. cnrs.fr
| | | |
Collapse
|
41
|
Vega A, Baptissart M, Caira F, Brugnon F, Lobaccaro JMA, Volle DH. Epigenetic: a molecular link between testicular cancer and environmental exposures. Front Endocrinol (Lausanne) 2012; 3:150. [PMID: 23230429 PMCID: PMC3515880 DOI: 10.3389/fendo.2012.00150] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 11/13/2012] [Indexed: 11/13/2022] Open
Abstract
In the last decades, studies in rodents have highlighted links between in utero and/or neonatal exposures to molecules that alter endocrine functions and the development of genital tract abnormalities, such as cryptorchidism, hypospadias, and impaired spermatogenesis. Most of these molecules, called endocrine disrupters exert estrogenic and/or antiandrogenic activities. These data led to the hypothesis of the testicular dysgenesis syndrome which postulates that these disorders are one clinical entity and are linked by epidemiological and pathophysiological relations. Furthermore, infertility has been stated as a risk factor for testicular cancer (TC). The incidence of TC has been increasing over the past decade. Most of testicular germ cell cancers develop through a pre-invasive carcinoma in situ from fetal germ cells (primordial germ cell or gonocyte). During their development, fetal germ cells undergo epigenetic modifications. Interestingly, several lines of evidence have shown that gene regulation through epigenetic mechanisms (DNA and histone modifications) plays an important role in normal development as well as in various diseases, including TC. Here we will review chromatin modifications which can affect testicular physiology leading to the development of TC; and highlight potential molecular pathways involved in these alterations in the context of environmental exposures.
Collapse
Affiliation(s)
- Aurelie Vega
- Génétique Reproduction et Développement, INSERM U 1103Aubière, France
- Génétique Reproduction et Développement, Clermont Université, Université Blaise PascalClermont-Ferrand, France
- Génétique Reproduction et Développement, CNRS, UMR 6293Aubière, France
- Centre de Recherche en Nutrition Humaine d’AuvergneClermont-Ferrand, France
| | - Marine Baptissart
- Génétique Reproduction et Développement, INSERM U 1103Aubière, France
- Génétique Reproduction et Développement, Clermont Université, Université Blaise PascalClermont-Ferrand, France
- Génétique Reproduction et Développement, CNRS, UMR 6293Aubière, France
- Centre de Recherche en Nutrition Humaine d’AuvergneClermont-Ferrand, France
| | - Françoise Caira
- Génétique Reproduction et Développement, INSERM U 1103Aubière, France
- Génétique Reproduction et Développement, Clermont Université, Université Blaise PascalClermont-Ferrand, France
- Génétique Reproduction et Développement, CNRS, UMR 6293Aubière, France
- Centre de Recherche en Nutrition Humaine d’AuvergneClermont-Ferrand, France
| | - Florence Brugnon
- Génétique Reproduction et Développement, INSERM U 1103Aubière, France
- Génétique Reproduction et Développement, Clermont Université, Université Blaise PascalClermont-Ferrand, France
- Génétique Reproduction et Développement, CNRS, UMR 6293Aubière, France
- Centre de Recherche en Nutrition Humaine d’AuvergneClermont-Ferrand, France
| | - Jean-Marc A. Lobaccaro
- Génétique Reproduction et Développement, INSERM U 1103Aubière, France
- Génétique Reproduction et Développement, Clermont Université, Université Blaise PascalClermont-Ferrand, France
- Génétique Reproduction et Développement, CNRS, UMR 6293Aubière, France
- Centre de Recherche en Nutrition Humaine d’AuvergneClermont-Ferrand, France
| | - David H. Volle
- Génétique Reproduction et Développement, INSERM U 1103Aubière, France
- Génétique Reproduction et Développement, Clermont Université, Université Blaise PascalClermont-Ferrand, France
- Génétique Reproduction et Développement, CNRS, UMR 6293Aubière, France
- Centre de Recherche en Nutrition Humaine d’AuvergneClermont-Ferrand, France
- *Correspondence: David H. Volle, Génétique Reproduction et Développement, INSERM U 1103, CNRS, UMR 6293, Clermont Université, 24 avenue des Landais, BP 80026, 63171 Aubière Cedex, France. e-mail:
| |
Collapse
|
42
|
Effect of 2,2′,4,4′-tetrahydroxybenzophenone (BP2) on steroidogenesis in testicular Leydig cells. Toxicology 2011; 288:18-26. [DOI: 10.1016/j.tox.2011.06.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Revised: 06/13/2011] [Accepted: 06/20/2011] [Indexed: 10/18/2022]
|
43
|
Miao J, Choi SE, Seok SM, Yang L, Zuercher WJ, Xu Y, Willson TM, Xu HE, Kemper JK. Ligand-dependent regulation of the activity of the orphan nuclear receptor, small heterodimer partner (SHP), in the repression of bile acid biosynthetic CYP7A1 and CYP8B1 genes. Mol Endocrinol 2011; 25:1159-69. [PMID: 21566081 DOI: 10.1210/me.2011-0033] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Small heterodimer partner (SHP) plays important roles in diverse biological processes by directly interacting with transcription factors and inhibiting their activities. SHP has been designated an orphan nuclear receptor, but whether its activity can be modulated by ligands has been a long-standing question. Recently, retinoid-related molecules, including 4-[3-(1-adamantyl)-4-hydroxyphenyl]-3-chlorocinnamic acid (3Cl-AHPC), were shown to bind to SHP and enhance apoptosis. We have examined whether 3Cl-AHPC acts as an agonist and increases SHP activity in the repression of bile acid biosynthetic CYP7A1 and CYP8B1 genes and delineated the underlying mechanisms. Contrary to this expectation, micromolar concentrations of 3Cl-AHPC increased CYP7A1 expression but indirectly via p38 kinase signaling. Nanomolar concentrations, however, repressed CYP7A1 expression and decreased bile acid levels in HepG2 cells, and little repression was observed when SHP was down-regulated by small hairpin RNA. Mechanistic studies revealed that 3Cl-AHPC bound to SHP, increased the interaction of SHP with liver receptor homologue (LRH)-1, a hepatic activator for CYP7A1 and CYP8B1 genes, and with repressive cofactors, Brahma, mammalian Sin3a, and histone deacetylase-1, and, subsequently, increased the occupancy of SHP and these cofactors at the promoters. Mutation of Leu-100, predicted to contact 3Cl-AHPC within the SHP ligand binding pocket by molecular modeling, severely impaired the increased interaction with LRH-1, and repression of LRH-1 activity mediated by 3Cl-AHPC. 3Cl-AHPC repressed SHP metabolic target genes in a gene-specific manner in human primary hepatocytes and HepG2 cells. These data suggest that SHP may act as a ligand-regulated receptor in metabolic pathways. Modulation of SHP activity by synthetic ligands may be a useful therapeutic strategy.
Collapse
Affiliation(s)
- Ji Miao
- Department of Molecular and Integrative Physiology, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
El-Hajjaji FZ, Oumeddour A, Pommier AJC, Ouvrier A, Viennois E, Dufour J, Caira F, Drevet JR, Volle DH, Baron S, Saez F, Lobaccaro JMA. Liver X receptors, lipids and their reproductive secrets in the male. Biochim Biophys Acta Mol Basis Dis 2011; 1812:974-81. [PMID: 21334438 DOI: 10.1016/j.bbadis.2011.02.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 02/07/2011] [Accepted: 02/11/2011] [Indexed: 12/31/2022]
Abstract
Liver X receptor (LXR) α and LXRβ belong to the nuclear receptor superfamily. For many years, they have been called orphan receptors, as no natural ligand was identified. In the last decade, the LXR natural ligands have been shown to be oxysterols, molecules derived from cholesterol. While these nuclear receptors have been abundantly studied for their roles in the regulation of lipid metabolism, it appears that they also present crucial activities in reproductive organs such as testis and epididymis, as well as prostate. Phenotypic analyses of mice lacking LXRs (lxr-/-) pointed out their physiological activities in the various cells and organs regulating reproductive functions. This review summarizes the impact of LXR-deficiency in male reproduction, highlighting the novel information coming from the phenotypic analyses of lxrα-/-, lxrβ-/- and lxrα;β-/- mice. This article is part of a Special Issue entitled: Translating nuclear receptor from health to disease.
Collapse
Affiliation(s)
- Fatim-Zorah El-Hajjaji
- CNRS Unité Mixte de Recherche 6247 Génétique, Reproduction et Développement, F-63171 Aubière, France
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Arginine methylation by PRMT5 at a naturally occurring mutation site is critical for liver metabolic regulation by small heterodimer partner. Mol Cell Biol 2011; 31:1540-50. [PMID: 21262773 DOI: 10.1128/mcb.01212-10] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Small Heterodimer Partner (SHP) inhibits numerous transcription factors that are involved in diverse biological processes, including lipid and glucose metabolism. In response to increased hepatic bile acids, SHP gene expression is induced and the SHP protein is stabilized. We now show that the activity of SHP is also increased by posttranslational methylation at Arg-57 by protein arginine methyltransferase 5 (PRMT5). Adenovirus-mediated hepatic depletion of PRMT5 decreased SHP methylation and reversed the suppression of metabolic genes by SHP. Mutation of Arg-57 decreased SHP interaction with its known cofactors, Brm, mSin3A, and histone deacetylase 1 (HDAC1), but not with G9a, and decreased their recruitment to SHP target genes in mice. Hepatic overexpression of SHP inhibited metabolic target genes, decreased bile acid and hepatic triglyceride levels, and increased glucose tolerance. In contrast, mutation of Arg-57 selectively reversed the inhibition of SHP target genes and metabolic outcomes. The importance of Arg-57 methylation for the repression activity of SHP provides a molecular basis for the observation that a natural mutation of Arg-57 in humans is associated with the metabolic syndrome. Targeting posttranslational modifications of SHP may be an effective therapeutic strategy by controlling selected groups of genes to treat SHP-related human diseases, such as metabolic syndrome, cancer, and infertility.
Collapse
|
46
|
|
47
|
Abstract
Several signals, such as hormones and signaling molecules, have been identified as important regulators of Leydig cell differentiation and function. Conveying these signals and translating them into a genomic response to ensure an accurate physiological output requires the action of a network of transcription factors, including those belonging to the nuclear receptor superfamily. Nuclear receptors regulate expression of genes important for growth, differentiation, development, and homeostasis. Several nuclear receptors, such as steroid hormone receptors (NR3A and NR3C families), are activated upon ligand binding, whereas others, including members of the NR2C, NR2F, and NR4A families, either do not require a ligand or ligands have yet to be identified. Several nuclear receptors (e.g., NR2F2 and NR5A1) have been shown to play essential roles in Leydig cells, whereas for others (e.g., NR2B1 and NR4A1), the assessment of their function has been precluded by the early embryonic lethality associated with null mice or by redundancy mechanisms by other family members. This is now being overcome with the generation of novel approaches, including Leydig cell-specific knockout models. This review provides an overview of the nuclear receptor family of transcription factors as they relate to Leydig cell gene expression and function.
Collapse
Affiliation(s)
- Luc J Martin
- Reproduction, Perinatal, and Child Health, Research Centre du Centre Universitaire de Québec, Québec City, Québec, Canada.
| | | |
Collapse
|