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Dias Da Silva I, Wuidar V, Zielonka M, Pequeux C. Unraveling the Dynamics of Estrogen and Progesterone Signaling in the Endometrium: An Overview. Cells 2024; 13:1236. [PMID: 39120268 PMCID: PMC11312103 DOI: 10.3390/cells13151236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/25/2024] [Accepted: 07/19/2024] [Indexed: 08/10/2024] Open
Abstract
The endometrium is crucial for the perpetuation of human species. It is a complex and dynamic tissue lining the inner wall of the uterus, regulated throughout a woman's life based on estrogen and progesterone fluctuations. During each menstrual cycle, this multicellular tissue undergoes cyclical changes, including regeneration, differentiation in order to allow egg implantation and embryo development, or shedding of the functional layer in the absence of pregnancy. The biology of the endometrium relies on paracrine interactions between epithelial and stromal cells involving complex signaling pathways that are modulated by the variations of estrogen and progesterone levels across the menstrual cycle. Understanding the complexity of estrogen and progesterone receptor signaling will help elucidate the mechanisms underlying normal reproductive physiology and provide fundamental knowledge contributing to a better understanding of the consequences of hormonal imbalances on gynecological conditions and tumorigenesis. In this narrative review, we delve into the physiology of the endometrium, encompassing the complex signaling pathways of estrogen and progesterone.
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Grants
- J.0165.24, 7.6529.23, J.0153.22, 7.4580.21F, 7.6518.21, J.0131.19 Fund for Scientific Research
- FSR-F-2023-FM, FSR-F-2022-FM, FSR-F-2021-FM, FSR-F-M-19/6761 University of Liège
- 2020, 2021, 2022 Fondation Léon Fredericq
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Affiliation(s)
| | | | | | - Christel Pequeux
- Tumors and Development, Estrogen-Sensitive Tissues and Cancer Team, GIGA-Cancer, Laboratory of Biology, University of Liège, 4000 Liège, Belgium; (I.D.D.S.); (V.W.); (M.Z.)
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2
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Martinez GJ, Appleton M, Kipp ZA, Loria AS, Min B, Hinds TD. Glucocorticoids, their uses, sexual dimorphisms, and diseases: new concepts, mechanisms, and discoveries. Physiol Rev 2024; 104:473-532. [PMID: 37732829 PMCID: PMC11281820 DOI: 10.1152/physrev.00021.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/07/2023] [Accepted: 09/10/2023] [Indexed: 09/22/2023] Open
Abstract
The normal stress response in humans is governed by the hypothalamic-pituitary-adrenal (HPA) axis through heightened mechanisms during stress, raising blood levels of the glucocorticoid hormone cortisol. Glucocorticoids are quintessential compounds that balance the proper functioning of numerous systems in the mammalian body. They are also generated synthetically and are the preeminent therapy for inflammatory diseases. They act by binding to the nuclear receptor transcription factor glucocorticoid receptor (GR), which has two main isoforms (GRα and GRβ). Our classical understanding of glucocorticoid signaling is from the GRα isoform, which binds the hormone, whereas GRβ has no known ligands. With glucocorticoids being involved in many physiological and cellular processes, even small disruptions in their release via the HPA axis, or changes in GR isoform expression, can have dire ramifications on health. Long-term chronic glucocorticoid therapy can lead to a glucocorticoid-resistant state, and we deliberate how this impacts disease treatment. Chronic glucocorticoid treatment can lead to noticeable side effects such as weight gain, adiposity, diabetes, and others that we discuss in detail. There are sexually dimorphic responses to glucocorticoids, and women tend to have a more hyperresponsive HPA axis than men. This review summarizes our understanding of glucocorticoids and critically analyzes the GR isoforms and their beneficial and deleterious mechanisms and the sexual differences that cause a dichotomy in responses. We also discuss the future of glucocorticoid therapy and propose a new concept of dual GR isoform agonist and postulate why activating both isoforms may prevent glucocorticoid resistance.
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Affiliation(s)
- Genesee J Martinez
- Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, Kentucky, United States
| | - Malik Appleton
- Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, Kentucky, United States
| | - Zachary A Kipp
- Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, Kentucky, United States
| | - Analia S Loria
- Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, Kentucky, United States
- Barnstable Brown Diabetes Center, University of Kentucky College of Medicine, Lexington, Kentucky, United States
| | - Booki Min
- Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States
| | - Terry D Hinds
- Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, Kentucky, United States
- Barnstable Brown Diabetes Center, University of Kentucky College of Medicine, Lexington, Kentucky, United States
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, United States
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3
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Shu M, Yao S, Zhong W, Song C, Chen F, Shang W. Personalized embryo transfer based on RNA sequencing endometrial receptivity test in repeated implantation failure patients: artificial cycle versus natural cycle. Gynecol Endocrinol 2023; 39:2181639. [PMID: 36822227 DOI: 10.1080/09513590.2023.2181639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
INTRODUCTION Embryo implantation provides an efficient way for patients with repeated implantation failure (RIF) to achieve pregnancy. The aim of this study is to compare the implantation outcomes of RIF patients in artificial cycle to those in natural cycle, both were treated with RNA sequencing endometrial receptivity test (rsERT) based personalized embryo implantation. METHODS The endometrial receptivity (ER) analysis was performed using rsERT followed by personalized embryo transfer at optimal window of implantation (WOI). The implantation rate (IR), clinical pregnancy rate (CPR) and live birth rate (LBR) were calculated. The expression levels of biomarkers involved in pregnancy process in the patients detected as in receptivity status were also analyzed. RESULTS The rsERT shown that 44.8% (natural cycle) and 47.8% (artificial cycle) patients were in non-receptive status, which indicated a WOI displacement. After personalized embryo transfer, the IR of patients in artificial cycle was higher than those in natural cycle (52.2% vs 27.6%). The expressions of FKBP52, MUC1 and LPAR3 were significantly lower in artificial cycle than in natural cycle. CONCLUSION Using artificial cycle for personalized embryo transfer based on rsERT may yield better pregnancy outcomes for RIF patients. A gene expression analysis of FKBP52, MUC1 and LPAR3 provided a potential way to increase implantation outcomes for RIF patients.
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Affiliation(s)
- Mingming Shu
- Department of Obstetrics and Gynecology, The Sixth Medical Center of PLA General Hospital, Beijing, China
| | - Shun Yao
- Department of Obstetrics and Gynecology, The Sixth Medical Center of PLA General Hospital, Beijing, China
| | - Wei Zhong
- Department of Obstetrics and Gynecology, The Sixth Medical Center of PLA General Hospital, Beijing, China
| | - Chunlan Song
- Department of Obstetrics and Gynecology, The Sixth Medical Center of PLA General Hospital, Beijing, China
| | - Fu Chen
- Department of Obstetrics and Gynecology, The Sixth Medical Center of PLA General Hospital, Beijing, China
| | - Wei Shang
- Department of Obstetrics and Gynecology, The Seventh Medical Center of PLA General Hospital, Beijing, China
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4
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Mazaira GI, Erlejman AG, Zgajnar NR, Piwien-Pilipuk G, Galigniana MD. The transportosome system as a model for the retrotransport of soluble proteins. Mol Cell Endocrinol 2023; 577:112047. [PMID: 37604241 DOI: 10.1016/j.mce.2023.112047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 08/23/2023]
Abstract
The classic model of action of the glucocorticoid receptor (GR) sustains that its associated heat-shock protein of 90-kDa (HSP90) favours the cytoplasmic retention of the unliganded GR, whereas the binding of steroid triggers the dissociation of HSP90 allowing the passive nuclear accumulation of GR. In recent years, it was described a molecular machinery called transportosome that is responsible for the active retrograde transport of GR. The transportosome heterocomplex includes a dimer of HSP90, the stabilizer co-chaperone p23, and FKBP52 (FK506-binding protein of 52-kDa), an immunophilin that binds dynein/dynactin motor proteins. The model shows that upon steroid binding, FKBP52 is recruited to the GR allowing its active retrograde transport on cytoskeletal tracks. Then, the entire GR heterocomplex translocates through the nuclear pore complex. The HSP90-based heterocomplex is released in the nucleoplasm followed by receptor dimerization. Subsequent findings demonstrated that the transportosome is also responsible for the retrotransport of other soluble proteins. Importantly, the disruption of this molecular oligomer leads to several diseases. In this article, we discuss the relevance of this transport machinery in health and disease.
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Affiliation(s)
- Gisela I Mazaira
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales de la Universidad de Buenos Aires, Buenos Aires, 1428, Argentina; Instituto de Química Biológica de la, Facultad de Ciencias Exactas y Naturales, CONICET, Buenos Aires, 1428, Argentina
| | - Alejandra G Erlejman
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales de la Universidad de Buenos Aires, Buenos Aires, 1428, Argentina; Instituto de Química Biológica de la, Facultad de Ciencias Exactas y Naturales, CONICET, Buenos Aires, 1428, Argentina
| | - Nadia R Zgajnar
- Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, 1428, Argentina
| | | | - Mario D Galigniana
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales de la Universidad de Buenos Aires, Buenos Aires, 1428, Argentina; Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, 1428, Argentina.
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5
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Gurung D, Danielson JA, Tasnim A, Zhang JT, Zou Y, Liu JY. Proline Isomerization: From the Chemistry and Biology to Therapeutic Opportunities. BIOLOGY 2023; 12:1008. [PMID: 37508437 PMCID: PMC10376262 DOI: 10.3390/biology12071008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/27/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023]
Abstract
Proline isomerization, the process of interconversion between the cis- and trans-forms of proline, is an important and unique post-translational modification that can affect protein folding and conformations, and ultimately regulate protein functions and biological pathways. Although impactful, the importance and prevalence of proline isomerization as a regulation mechanism in biological systems have not been fully understood or recognized. Aiming to fill gaps and bring new awareness, we attempt to provide a wholistic review on proline isomerization that firstly covers what proline isomerization is and the basic chemistry behind it. In this section, we vividly show that the cause of the unique ability of proline to adopt both cis- and trans-conformations in significant abundance is rooted from the steric hindrance of these two forms being similar, which is different from that in linear residues. We then discuss how proline isomerization was discovered historically followed by an introduction to all three types of proline isomerases and how proline isomerization plays a role in various cellular responses, such as cell cycle regulation, DNA damage repair, T-cell activation, and ion channel gating. We then explore various human diseases that have been linked to the dysregulation of proline isomerization. Finally, we wrap up with the current stage of various inhibitors developed to target proline isomerases as a strategy for therapeutic development.
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Affiliation(s)
- Deepti Gurung
- Department of Medicine, University of Toledo College of Medicine, Toledo, OH 43614, USA
- Department of Cell and Cancer Biology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Jacob A Danielson
- Department of Medicine, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Afsara Tasnim
- Department of Bioengineering, University of Toledo College of Engineering, Toledo, OH 43606, USA
| | - Jian-Ting Zhang
- Department of Cell and Cancer Biology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Yue Zou
- Department of Cell and Cancer Biology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Jing-Yuan Liu
- Department of Medicine, University of Toledo College of Medicine, Toledo, OH 43614, USA
- Department of Cell and Cancer Biology, University of Toledo College of Medicine, Toledo, OH 43614, USA
- Department of Bioengineering, University of Toledo College of Engineering, Toledo, OH 43606, USA
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Soto OB, Ramirez CS, Koyani R, Rodriguez-Palomares IA, Dirmeyer JR, Grajeda B, Roy S, Cox MB. Structure and function of the TPR-domain immunophilins FKBP51 and FKBP52 in normal physiology and disease. J Cell Biochem 2023:10.1002/jcb.30406. [PMID: 37087733 PMCID: PMC10903107 DOI: 10.1002/jcb.30406] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 03/22/2023] [Accepted: 04/04/2023] [Indexed: 04/24/2023]
Abstract
Coordinated cochaperone interactions with Hsp90 and associated client proteins are crucial for a multitude of signaling pathways in normal physiology, as well as in disease settings. Research on the molecular mechanisms regulated by the Hsp90 multiprotein complexes has demonstrated increasingly diverse roles for cochaperones throughout Hsp90-regulated signaling pathways. Thus, the Hsp90-associated cochaperones have emerged as attractive therapeutic targets in a wide variety of disease settings. The tetratricopeptide repeat (TPR)-domain immunophilins FKBP51 and FKBP52 are of special interest among the Hsp90-associated cochaperones given their Hsp90 client protein specificity, ubiquitous expression across tissues, and their increasingly important roles in neuronal signaling, intracellular calcium release, peptide bond isomerization, viral replication, steroid hormone receptor function, and cell proliferation to name a few. This review summarizes the current knowledge of the structure and molecular functions of TPR-domain immunophilins FKBP51 and FKBP52, recent findings implicating these immunophilins in disease, and the therapeutic potential of targeting FKBP51 and FKBP52 for the treatment of disease.
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Affiliation(s)
- Olga B. Soto
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX 79968
| | - Christian S. Ramirez
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX 79968
| | - Rina Koyani
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX 79968
| | - Isela A. Rodriguez-Palomares
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX 79968
| | - Jessica R. Dirmeyer
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX 79968
| | - Brian Grajeda
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX 79968
| | - Sourav Roy
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX 79968
| | - Marc B. Cox
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX 79968
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Texas at El Paso, El Paso, TX 79968
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Apoptosis and glucocorticoid-related genes mRNA expression is modulated by coenzyme Q10 supplementation during in vitro maturation and vitrification of bovine oocytes and cumulus cells. Theriogenology 2022; 192:62-72. [DOI: 10.1016/j.theriogenology.2022.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/02/2022] [Accepted: 08/21/2022] [Indexed: 11/20/2022]
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8
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FKBP52 and FKBP51 differentially regulate the stability of estrogen receptor in breast cancer. Proc Natl Acad Sci U S A 2022; 119:e2110256119. [PMID: 35394865 PMCID: PMC9169630 DOI: 10.1073/pnas.2110256119] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
SignificanceEstrogen receptor α (ERα) is a transcription factor that induces cell proliferation and exhibits increased expression in a large subset of breast cancers. We comprehensively searched for indicators of poor prognosis in ERα-positive breast cancer through the multiple databases, including interactome, transcriptome, and survival analysis, and identified FKBP52. We found that two immunophilins, FKBP52 and FKBP51, have opposing effects on ERα stability and propose that therapeutic targeting of FKBP52 could be useful for the prevention and treatment of ERα-positive breast cancers, including endocrine therapy-resistant breast cancers.
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9
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Smedlund KB, Sanchez ER, Hinds TD. FKBP51 and the molecular chaperoning of metabolism. Trends Endocrinol Metab 2021; 32:862-874. [PMID: 34481731 PMCID: PMC8516732 DOI: 10.1016/j.tem.2021.08.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/31/2021] [Accepted: 08/06/2021] [Indexed: 01/30/2023]
Abstract
The molecular chaperone FK506-binding protein 51 (FKBP51) is gaining attention as a meaningful biomarker of metabolic dysfunction. This review examines the emerging contributions of FKBP51 in adipogenesis and lipid metabolism, myogenesis and protein catabolism, and glucocorticoid-induced skin hypoplasia and dermal adipocytes. The FKBP51 signaling mechanisms that may explain these metabolic consequences are discussed. These mechanisms are diverse, with FKBP51 independently and directly regulating phosphorylation cascades and nuclear receptors. We provide a discussion of the newly developed compounds that antagonize FKBP51, which may offer therapeutic advantages for adiposity. These observations suggest we are only beginning to uncover the complex nature of FKBP51 and its molecular chaperoning of metabolism.
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Affiliation(s)
- Kathryn B Smedlund
- Center for Diabetes and Endocrine Research, Department of Physiology and Pharmacology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Edwin R Sanchez
- Center for Diabetes and Endocrine Research, Department of Physiology and Pharmacology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Terry D Hinds
- Barnstable Brown Diabetes Center, Markey Cancer Center, Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, KY 40508, USA.
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Bolnykh V, Rossetti G, Rothlisberger U, Carloni P. Expanding the boundaries of ligand–target modeling by exascale calculations. WIRES COMPUTATIONAL MOLECULAR SCIENCE 2021. [DOI: 10.1002/wcms.1535] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Viacheslav Bolnykh
- Laboratory of Computational Chemistry and Biochemistry École Polytechnique Fédérale de Lausanne Lausanne Switzerland
- Computational Biomedicine, Institute of Neuroscience and Medicine (INM‐9)/Institute for Advanced Simulations (IAS‐5) Forschungszentrum Jülich Jülich Germany
| | - Giulia Rossetti
- Computational Biomedicine, Institute of Neuroscience and Medicine (INM‐9)/Institute for Advanced Simulations (IAS‐5) Forschungszentrum Jülich Jülich Germany
- Jülich Supercomputing Centre (JSC) Forschungszentrum Jülich Jülich Germany
- Department of Hematology, Oncology, Hemostaseology and Stem Cell Transplantation University Hospital Aachen RWTH Aachen University Aachen Germany
| | - Ursula Rothlisberger
- Laboratory of Computational Chemistry and Biochemistry École Polytechnique Fédérale de Lausanne Lausanne Switzerland
| | - Paolo Carloni
- Institute for Neuroscience and Medicine and Institute for Advanced Simulations (IAS‐5/INM‐9) “Computational Biomedicine” Forschungszentrum Jülich Jülich Germany
- JARA‐Institute INM‐11 “Molecular Neuroscience and Neuroimaging” Forschungszentrum Jülich Jülich Germany
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11
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Iki T, Takami M, Kai T. Modulation of Ago2 Loading by Cyclophilin 40 Endows a Unique Repertoire of Functional miRNAs during Sperm Maturation in Drosophila. Cell Rep 2020; 33:108380. [PMID: 33176138 DOI: 10.1016/j.celrep.2020.108380] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/25/2020] [Accepted: 10/21/2020] [Indexed: 12/14/2022] Open
Abstract
In gene silencing, Hsp90 chaperone machinery assists Argonaute (Ago) binding and unwinding of silencing small RNA (sRNA) duplexes. This enables the formation of effector RNA-induced silencing complex (RISC) that often displays cargo preferences. Hence, in Drosophila, microRNAs (miRNAs) and small-interfering RNAs (siRNAs) are differentially sorted into Ago1-RISC and Ago2-RISC, respectively. Here, we identify fly Cyclophilin 40 (Cyp40) as a testis-specialized Hsp90 co-chaperone essential for spermatogenesis and for modulating Ago2-RISC formation. We show that testis-distinctive Ago-sorting and strand-selection mechanisms accumulate a unique set of miRNAs on Ago2. Cyp40 interacts with duplex-incorporating Ago2 through Hsp90 in vitro and selectively promotes the build-up of Ago2-bound miRNAs, but not endogenous siRNAs, in vivo. Moreover, one of Cyp40-dependent Ago2-sorted miRNAs is required for late spermatogenesis, unraveling the physiological relevance of the unconventional yet conserved Drosophila miRNA-Ago2 sorting pathway. Collectively, these results identify RISC-regulatory roles for Hsp90 machinery and, more generally, highlight the tissue-specific adaptation of sRNA pathways through chaperone diversification.
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Affiliation(s)
- Taichiro Iki
- Laboratory of Germline Biology, Graduate School of Frontier Biosciences, Osaka University, Yamadaoka1-3, Suita, Osaka 565-0871, Japan.
| | - Moe Takami
- Laboratory of Germline Biology, Graduate School of Frontier Biosciences, Osaka University, Yamadaoka1-3, Suita, Osaka 565-0871, Japan
| | - Toshie Kai
- Laboratory of Germline Biology, Graduate School of Frontier Biosciences, Osaka University, Yamadaoka1-3, Suita, Osaka 565-0871, Japan.
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12
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De Leo SA, Zgajnar NR, Mazaira GI, Erlejman AG, Galigniana MD. Role of the Hsp90-Immunophilin Heterocomplex in Cancer Biology. CURRENT CANCER THERAPY REVIEWS 2020. [DOI: 10.2174/1573394715666190102120801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The identification of new factors that may function as cancer markers and become eventual pharmacologic targets is a challenge that may influence the management of tumor development and management. Recent discoveries connecting Hsp90-binding immunophilins with the regulation of signalling events that can modulate cancer progression transform this family of proteins in potential unconventional factors that may impact on the screening and diagnosis of malignant diseases. Immunophilins are molecular chaperones that group a family of intracellular receptors for immunosuppressive compounds. A subfamily of the immunophilin family is characterized by showing structural tetratricopeptide repeats, protein domains that are able to interact with the C-terminal end of the molecular chaperone Hsp90, and via the proper Hsp90-immunophilin complex, the biological properties of a number of client-proteins involved in cancer biology are modulated. Recent discoveries have demonstrated that two of the most studied members of this Hsp90- binding subfamily of immunophilins, FKBP51 and FKBP52, participate in several cellular processes such as apoptosis, carcinogenesis progression, and chemoresistance. While the expression levels of some members of the immunophilin family are affected in both cancer cell lines and human cancer tissues compared to normal samples, novel regulatory mechanisms have emerged during the last few years for several client-factors of immunophilins that are major players in cancer development and progression, among them steroid receptors, the transctiption factor NF-κB and the catalytic subunit of telomerase, hTERT. In this review, recent findings related to the biological properties of both iconic Hsp90-binding immunophilins, FKBP51 and FKBP52, are reviewed within the context of their interactions with those chaperoned client-factors. The potential roles of both immunophilins as potential cancer biomarkers and non-conventional pharmacologic targets for cancer treatment are discussed.
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Affiliation(s)
- Sonia A. De Leo
- Departamento de Quimica Biologica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Nadia R. Zgajnar
- Instituto de Biología y Medicina Experimental (IBYME)-CONICET, Buenos Aires, Argentina
| | - Gisela I. Mazaira
- Departamento de Quimica Biologica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Alejandra G. Erlejman
- Departamento de Quimica Biologica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mario D. Galigniana
- Departamento de Quimica Biologica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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Jung JA, Yoon YJ. Development of Non-Immunosuppressive FK506 Derivatives as Antifungal and Neurotrophic Agents. J Microbiol Biotechnol 2020; 30:1-10. [PMID: 31752059 PMCID: PMC9728173 DOI: 10.4014/jmb.1911.11008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
FK506, also known as tacrolimus, is a clinically important immunosuppressant drug and has promising therapeutic potentials owing to its antifungal, neuroprotective, and neuroregenerative activities. To generate various FK506 derivatives, the structure of FK506 has been modified by chemical methods or biosynthetic pathway engineering. Herein, we describe the mode of the antifungal action of FK506 and the structure-activity relationship of FK506 derivatives in the context of immunosuppressive and antifungal activities. In addition, we discuss the neurotrophic mechanism of FK506 known to date, along with the neurotrophic FK506 derivatives with significantly reduced immunosuppressive activity. This review suggests the possibility to generate novel FK506 derivatives as antifungal as well as neuroregenerative/neuroprotective agents.
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Affiliation(s)
- Jin A Jung
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Yeo Joon Yoon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea,Corresponding author Phone: +82-2-3277-4082 Fax: +82-2-3277-3419 E-mail:
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14
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Feng X, Sippel C, Knaup FH, Bracher A, Staibano S, Romano MF, Hausch F. A Novel Decalin-Based Bicyclic Scaffold for FKBP51-Selective Ligands. J Med Chem 2019; 63:231-240. [PMID: 31800244 DOI: 10.1021/acs.jmedchem.9b01157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Selective inhibition of FKBP51 has emerged as possible novel treatment for diseases like major depressive disorder, obesity, chronic pain, and certain cancers. The current FKBP51 inhibitors are rather large, flexible, and have to be further optimized. By using a structure-based rigidification strategy, we hereby report the design and synthesis of a novel promising bicyclic scaffold for FKBP51 ligands. The structure-activity analysis revealed the decalin scaffold as the best moiety for the selectivity-enabling subpocket of FBKP51. The resulting compounds retain high potency for FKBP51 and excellent selectivity over the close homologue FKBP52. With the cocrystal structure of an advanced ligand in this novel series, we show how the decalin locks the key selectivity-inducing cyclohexyl moiety of the ligand in a conformation typical for FKBP51-selective binding. The best compound 29 produces cell death in a HeLa-derived KB cell line, a cellular model of cervical adenocarcinoma, where FKBP51 is highly overexpressed. Our results show how FKBP51 inhibitors can be rigidified and extended while preserving FKBP51 selectivity. Such inhibitors might be novel tools in the treatment of human cancers with deregulated FKBP51.
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Affiliation(s)
- Xixi Feng
- Department of Translational Research in Psychiatry , Max Planck Institute of Psychiatry , Kraepelinstrasse 2 , 80804 Munich , Germany
| | - Claudia Sippel
- Department of Translational Research in Psychiatry , Max Planck Institute of Psychiatry , Kraepelinstrasse 2 , 80804 Munich , Germany
| | - Fabian H Knaup
- Institute for Organic Chemistry and Biochemistry , Technische Universität Darmstadt , Alarich-Weiss-Strasse 4 , D-64287 Darmstadt , Germany
| | - Andreas Bracher
- Max Planck Institute of Biochemistry , Am Klopferspitz 18 , 82152 Martinsried , Germany
| | - Stefania Staibano
- Department of Advanced Biomedical Sciences , Federico II University of Naples , 80131 Naples , Italy
| | - Maria F Romano
- Department of Molecular Medicine and Medical Biotechnologies , Federico II University , 80131 Naples , Italy
| | - Felix Hausch
- Institute for Organic Chemistry and Biochemistry , Technische Universität Darmstadt , Alarich-Weiss-Strasse 4 , D-64287 Darmstadt , Germany
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15
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Ruiz-Estevez M, Staats J, Paatela E, Munson D, Katoku-Kikyo N, Yuan C, Asakura Y, Hostager R, Kobayashi H, Asakura A, Kikyo N. Promotion of Myoblast Differentiation by Fkbp5 via Cdk4 Isomerization. Cell Rep 2019; 25:2537-2551.e8. [PMID: 30485818 PMCID: PMC6350781 DOI: 10.1016/j.celrep.2018.11.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/29/2018] [Accepted: 10/31/2018] [Indexed: 01/10/2023] Open
Abstract
Fkbp5 is a widely expressed peptidyl prolyl isomerase that serves as a molecular chaperone through conformational changes of binding partners. Although it regulates diverse protein functions, little is known about its roles in myogenesis. We found here that Fkbp5 plays critical roles in myoblast differentiation through two mechanisms. First, it sequesters Cdk4 within the Hsp90 storage complex and prevents the formation of the cyclin D1-Cdk4 complex, which is a major inhibitor of differentiation. Second, Fkbp5 promotes cis-trans isomerization of the Thr172-Pro173 peptide bond in Cdk4 and inhibits phosphorylation of Thr172, an essential step for Cdk4 activation. Consistent with these in vitro findings, muscle regeneration is delayed in Fkbp5−/− mice. The related protein Fkbp4 also sequesters Cdk4 within the Hsp90 complex but does not isomerize Cdk4 or induce Thr173 phosphorylation despite its highly similar sequence. This study demonstrates protein isomerization as a critical regulatory mechanism of myogenesis by targeting Cdk4.
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Affiliation(s)
- Mercedes Ruiz-Estevez
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - James Staats
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Ellen Paatela
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Dane Munson
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA
| | - Nobuko Katoku-Kikyo
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Ce Yuan
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Bioinformatics and Computational Biology Graduate Program, University of Minnesota, Minneapolis, MN 55455, USA
| | - Yoko Asakura
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Department of Neurology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Reilly Hostager
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA
| | - Hiroshi Kobayashi
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Atsushi Asakura
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Department of Neurology, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Nobuaki Kikyo
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA.
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16
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Mangé A, Coyaud E, Desmetz C, Laurent E, Béganton B, Coopman P, Raught B, Solassol J. FKBP4 connects mTORC2 and PI3K to activate the PDK1/Akt-dependent cell proliferation signaling in breast cancer. Am J Cancer Res 2019; 9:7003-7015. [PMID: 31660083 PMCID: PMC6815969 DOI: 10.7150/thno.35561] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 08/07/2019] [Indexed: 02/06/2023] Open
Abstract
Purpose: Among the FKBP family members, FKBP4 has been described to have a potential role in tumorigenesis, and as a putative tissue marker. We previously showed that FKBP4, an HSP90-associated co-chaperone, can elicit immune response as a tumor-specific antigen, and are overexpressed in breast cancer. Experimental design: In this study, we examined how loss of FKBP4 affect breast cancer progression and exploited protein interactomics to gain mechanistic insight into this process. Results: We found that FKBP4 expression is associated with breast cancer progression and prognosis, especially of ER-negative breast cancer. Furthermore, FKBP4 depletion specifically reduces cell growth and proliferation of triple negative breast cancer cell model and xenograft tumor model. Using specific protein interactome strategy by BirA proximity-dependent biotin identification, we demonstrated that FKBP4 is a novel PI3K-Akt-mTOR proximal interacting protein. Conclusion: Our results suggest that FKBP4 interacts with PI3K and can enhance Akt activation through PDK1 and mTORC2.
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17
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Development and utilization of human decidualization reporter cell line uncovers new modulators of female fertility. Proc Natl Acad Sci U S A 2019; 116:19541-19551. [PMID: 31501330 DOI: 10.1073/pnas.1907652116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Failure of embryo implantation accounts for a significant percentage of female infertility. Exquisitely coordinated molecular programs govern the interaction between the competent blastocyst and the receptive uterus. Decidualization, the rapid proliferation and differentiation of endometrial stromal cells into decidual cells, is required for implantation. Decidualization defects can cause poor placentation, intrauterine growth restriction, and early parturition leading to preterm birth. Decidualization has not yet been systematically studied at the genetic level due to the lack of a suitable high-throughput screening tool. Herein we describe the generation of an immortalized human endometrial stromal cell line that uses yellow fluorescent protein under the control of the prolactin promoter as a quantifiable visual readout of the decidualization response (hESC-PRLY cells). Using this cell line, we performed a genome-wide siRNA library screen, as well as a screen of 910 small molecules, to identify more than 4,000 previously unrecognized genetic and chemical modulators of decidualization. Ontology analysis revealed several groups of decidualization modulators, including many previously unappreciated transcription factors, sensory receptors, growth factors, and kinases. Expression studies of hits revealed that the majority of decidualization modulators are acutely sensitive to ovarian hormone exposure. Gradient treatment of exogenous factors was used to identify EC50 values of small-molecule hits, as well as verify several growth factor hits identified by the siRNA screen. The high-throughput decidualization reporter cell line and the findings described herein will aid in the development of patient-specific treatments for decidualization-based recurrent pregnancy loss, subfertility, and infertility.
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18
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Song S, Tan Y. Expression of FKBP52 in the ovaries of PCOS rats. Int J Mol Med 2018; 43:868-878. [PMID: 30483787 PMCID: PMC6317667 DOI: 10.3892/ijmm.2018.3998] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/19/2018] [Indexed: 12/19/2022] Open
Abstract
The present study aimed to examine the expression of FK-506 binding protein 52 (FKBP52) in the ovary tissues of rats with polycystic ovarian syndrome (PCOS) and its action on mediating androgen receptor (AR) through the mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway. PCOS model rats were established by dehydroepiandrosterone injection. Enzyme-linked immunosorbent assay (ELISA) measured serum sex hormones. Hematoxylin and eosin (H&E) staining was used to examine histological changes of the ovarian tissues. The expression levels of FKBP52 were detected by immunohistochemical (IHC) staining, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) analysis and western blotting (WB). In addition, RT-qPCR analysis was used to detect the mRNA expression of AR, and WB was used to detect the protein expression levels of AR, ERK1/2 and phosphorylated (p-) ERK1/2. In granulosa cell (GC) experiments, primary GCs were extracted and cultured. FKBP4 is the FKBP52-encoding gene, therefore, adenovirus vectors Ad-Oe-FKBP4-EGFP and Ad-siRNA-FKBP4-EGFP were constructed to examine the association among the above factors using the RT-qPCR and WB methods. In the animal experiment, the vaginal smear, H&E staining and ELISA results showed that the PCOS model was successfully established. The IHC staining revealed that the expression of FKBP52 in the GCs of the PCOS model group was higher than the remaining groups (P<0.01). The mRNA and expression levels of FKBP52 and AR in the PCOS model rats were significantly increased, when compared with levels in the other rats (P<0.05). The expression level of p-ERK1/2 was also higher (P<0.05). In the GC experiment, following overexpression of the FKBP4 gene, the mRNA and expression levels of FKBP52 and AR were increased (P<0.05). The expression level of p-ERK1/2 was also increased (P<0.05). Following FKBP4 gene silencing, the mRNA and expression levels of FKBP52 and AR were decreased (P<0.05). The expression level of ERK1/2 was also decreased (P<0.05). However, the expression level of p-ERK1/2 was increased (P<0.05). In conclusion, the upregulation of co-chaperone FKBP52 may mediate the activation of AR through the MAPK/ERK pathway.
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Affiliation(s)
- Shiyan Song
- Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Yong Tan
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
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19
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Namiki T, Ito J, Kashiwazaki N. Molecular mechanisms of embryonic implantation in mammals: Lessons from the gene manipulation of mice. Reprod Med Biol 2018; 17:331-342. [PMID: 30377389 PMCID: PMC6194304 DOI: 10.1002/rmb2.12103] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 03/22/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Human infertility has become a serious and social issue all over the world, especially in developed countries. Numerous types of assisted reproductive technology have been developed and are widely used to treat infertility. However, pregnancy outcomes require further improvement. It is essential to understand the cross-talk between the uterus (mother) and the embryo (fetus) in pregnancy, which is a very complicated event. METHODS The mammalian uterus requires many physiological and morphological changes for pregnancy-associated events, including implantation, decidualization, placentation, and parturition, to occur. Here is discussed recent advances in the knowledge of the molecular mechanisms underlying these reproductive events - in particular, embryonic implantation and decidualization - based on original and review articles. MAIN FINDINGS RESULTS In mice, embryonic implantation and decidualization are regulated by two steroid hormones: estrogen and progesterone. Along with these hormones, cytokines, cell-cycle regulators, growth factors, and transcription factors have essential roles in implantation and decidualization in mice. CONCLUSION Recent studies using the gene manipulation of mice have given considerable insight into the molecular mechanisms underlying embryonic implantation and decidualization. However, as most of the findings are based on mice, comparative research using different mammalian species will be useful for a better understanding of the species-dependent differences that are associated with reproductive events, including embryonic implantation.
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Affiliation(s)
- Takafumi Namiki
- Laboratory of Animal ReproductionGraduate School of Veterinary ScienceAzabu UniversitySagamiharaJapan
| | - Junya Ito
- Laboratory of Animal ReproductionGraduate School of Veterinary ScienceAzabu UniversitySagamiharaJapan
- School of Veterinary MedicineAzabu UniversitySagamiharaJapan
| | - Naomi Kashiwazaki
- Laboratory of Animal ReproductionGraduate School of Veterinary ScienceAzabu UniversitySagamiharaJapan
- School of Veterinary MedicineAzabu UniversitySagamiharaJapan
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20
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Wang J, Shen T, Zhu W, Dou L, Gu H, Zhang L, Yang Z, Chen H, Zhou Q, Sánchez ER, Field LJ, Mayo LD, Xie Z, Xiao D, Lin X, Shou W, Yong W. Protein phosphatase 5 and the tumor suppressor p53 down-regulate each other's activities in mice. J Biol Chem 2018; 293:18218-18229. [PMID: 30262665 DOI: 10.1074/jbc.ra118.004256] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/17/2018] [Indexed: 12/20/2022] Open
Abstract
Protein phosphatase 5 (PP5), a serine/threonine phosphatase, has a wide range of biological functions and exhibits elevated expression in tumor cells. We previously reported that pp5-deficient mice have altered ataxia-telangiectasia mutated (ATM)-mediated signaling and function. However, this regulation was likely indirect, as ATM is not a known PP5 substrate. In the current study, we found that pp5-deficient mice are hypersensitive to genotoxic stress. This hypersensitivity was associated with the marked up-regulation of the tumor suppressor tumor protein p53 and its downstream targets cyclin-dependent kinase inhibitor 1A (p21), MDM2 proto-oncogene (MDM2), and phosphatase and tensin homolog (PTEN) in pp5-deficient tissues and cells. These observations suggested that PP5 plays a role in regulating p53 stability and function. Experiments conducted with p53 +/- pp5 +/- or p53 +/- pp5 -/- mice revealed that complete loss of PP5 reduces tumorigenesis in the p53 +/- mice. Biochemical analyses further revealed that PP5 directly interacts with and dephosphorylates p53 at multiple serine/threonine residues, resulting in inhibition of p53-mediated transcriptional activity. Interestingly, PP5 expression was significantly up-regulated in p53-deficient cells, and further analysis of pp5 promoter activity revealed that p53 strongly represses PP5 transcription. Our results suggest a reciprocal regulatory interplay between PP5 and p53, providing an important feedback mechanism for the cellular response to genotoxic stress.
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Affiliation(s)
- Jun Wang
- From the Comparative Medical Center, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, China,; School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Tao Shen
- DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030
| | - Wuqiang Zhu
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Longyu Dou
- From the Comparative Medical Center, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Hao Gu
- From the Comparative Medical Center, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Lingling Zhang
- From the Comparative Medical Center, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Zhenyun Yang
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Hanying Chen
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Qi Zhou
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Edwin R Sánchez
- Department of Physiology and Pharmacology, College of Medicine, University of Toledo, Toledo, Ohio 43614, and
| | - Loren J Field
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Lindsey D Mayo
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Zhongwen Xie
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Deyong Xiao
- Fountain Valley Institute of Life Sciences and Fountain Valley Biomedical Technology Company, Dalian Hi-Tech Industrial Zone, Dalian 116023, China
| | - Xia Lin
- DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030
| | - Weinian Shou
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202,.
| | - Weidong Yong
- From the Comparative Medical Center, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, China,; Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202,.
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21
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GhKLCR1, a kinesin light chain-related gene, induces drought-stress sensitivity in Arabidopsis. SCIENCE CHINA-LIFE SCIENCES 2018; 62:63-75. [PMID: 29987502 DOI: 10.1007/s11427-018-9307-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 03/10/2018] [Indexed: 10/28/2022]
Abstract
Drought stress results in significant losses in agricultural production, and especially that of cotton. The molecular mechanisms that coordinate drought tolerance remain elusive in cotton. Here, we isolated a drought-response gene GhKLCR1, which is a close homolog of AtKLCR1, which encodes a kinesin light chain-related protein enriched with a tetratrico peptide-repeat region. A subcellular localization assay showed that GhKLCR1 is associated with the cell membrane. A tissue-specific expression profile analysis demonstrated that GhKLCR1 is a cotton root-specific gene. Further abiotic and hormonal stress treatments showed that GhKLCR1 was upregulated during abiotic stresses, especially after polyethylene glycol treatments. In addition, the glucuronidase (GUS) staining activity increased as the increment of mannitol concentration in transgenic Arabidopsis plants harboring the fusion construct PGhKLCR1::GUS. The root lengths of 35S::GhKLCR1 lines were significantly reduced compared with that of wild type. Additionally, seed germination was strongly inhibited in 35S::GhKLCR1 lines after 300-mmol L-1 mannitol treatments as compared with Columbia-0, indicating the sensitivity of GhKLCR1 to drought. These findings provide a better understanding of the structural, physiological and functional mechanisms of kinesin light chain-related proteins.
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22
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Hu M, Zhang Y, Feng J, Xu X, Zhang J, Zhao W, Guo X, Li J, Vestin E, Cui P, Li X, Wu XK, Brännström M, Shao LR, Billig H. Uterine progesterone signaling is a target for metformin therapy in PCOS-like rats. J Endocrinol 2018; 237:123-137. [PMID: 29535146 DOI: 10.1530/joe-18-0086] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 03/13/2018] [Indexed: 02/06/2023]
Abstract
Impaired progesterone (P4) signaling is linked to endometrial dysfunction and infertility in women with polycystic ovary syndrome (PCOS). Here, we report for the first time that elevated expression of progesterone receptor (PGR) isoforms A and B parallels increased estrogen receptor (ER) expression in PCOS-like rat uteri. The aberrant PGR-targeted gene expression in PCOS-like rats before and after implantation overlaps with dysregulated expression of Fkbp52 and Ncoa2, two genes that contribute to the development of uterine P4 resistance. In vivo and in vitro studies of the effects of metformin on the regulation of the uterine P4 signaling pathway under PCOS conditions showed that metformin directly inhibits the expression of PGR and ER along with the regulation of several genes that are targeted dependently or independently of PGR-mediated uterine implantation. Functionally, metformin treatment corrected the abnormal expression of cell-specific PGR and ER and some PGR-target genes in PCOS-like rats with implantation. Additionally, we documented how metformin contributes to the regulation of the PGR-associated MAPK/ERK/p38 signaling pathway in the PCOS-like rat uterus. Our data provide novel insights into how metformin therapy regulates uterine P4 signaling molecules under PCOS conditions.
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Affiliation(s)
- Min Hu
- Department of Physiology/EndocrinologyInstitute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Traditional Chinese MedicineThe First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yuehui Zhang
- Department of Physiology/EndocrinologyInstitute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Obstetrics and GynecologyKey Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Jiaxing Feng
- Department of Obstetrics and GynecologyKey Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xue Xu
- Department of Obstetrics and GynecologyKey Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Jiao Zhang
- Department of Acupuncture and MoxibustionSecond Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Wei Zhao
- Department of Obstetrics and GynecologyKey Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xiaozhu Guo
- Department of Obstetrics and GynecologyKey Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Juan Li
- Department of Physiology/EndocrinologyInstitute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Traditional Chinese MedicineThe First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Edvin Vestin
- Department of Physiology/EndocrinologyInstitute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Peng Cui
- Department of Physiology/EndocrinologyInstitute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Integrative Medicine and NeurobiologyState Key Lab of Medical Neurobiology, Shanghai Medical College and Institute of Acupuncture Research (WHO Collaborating Center for Traditional Medicine), Institute of Brain Science, Fudan University, Shanghai, China
- Institute of Integrative Medicine of Fudan UniversityShanghai, China
| | - Xin Li
- Department of Physiology/EndocrinologyInstitute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Gynecology Obstetrics and GynecologyHospital of Fudan University, Shanghai, China
- Shanghai Key Laboratory of Female Reproductive Endocrine Related DiseasesShanghai, China
| | - Xiao-Ke Wu
- Department of Obstetrics and GynecologyKey Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Mats Brännström
- Department of Obstetrics and GynecologySahlgrenska University Hospital, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Linus R Shao
- Department of Physiology/EndocrinologyInstitute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Håkan Billig
- Department of Physiology/EndocrinologyInstitute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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23
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Koh YQ, Peiris HN, Vaswani K, Almughlliq FB, Meier S, Burke CR, Roche JR, Reed CB, Arachchige BJ, Reed S, Mitchell MD. Proteome profiling of exosomes derived from plasma of heifers with divergent genetic merit for fertility. J Dairy Sci 2018; 101:6462-6473. [PMID: 29705424 DOI: 10.3168/jds.2017-14190] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 03/16/2018] [Indexed: 12/12/2022]
Abstract
The current study evaluated exosomes isolated from plasma of heifers bred to have high or low fertility through developing extreme diversity in fertility breeding values, however, key animal traits (e.g., body weight, milk production, and percentage of North American genetics) remained similar between the 2 groups. The exosomes were isolated by a combined ultracentrifugation and size exclusion chromatography approach and characterized by their size distribution (nanoparticle tracking analysis), morphology (transmission electron microscopy), and presence of exosomal markers (immunoblotting). In addition, a targeted mass spectrometry approach was used to confirm the presence of 2 exosomal markers, tumor susceptibility gene 101 and flotillin 1. The number of exosomes from plasma of high fertility heifers was greater compared with low fertility heifers. Interestingly, the exosomal proteomic profile, evaluated using mass spectrometry, identified 89 and 116 proteins in the high and low fertility heifers respectively, of which 4 and 31 were unique, respectively. These include proteins associated with specific biological processes and molecular functions of fertility. Most notably, the tetratricopeptide repeat protein 41-related, glycodelin, and kelch-like protein 8 were identified in plasma exosomes unique to the low fertility heifers. These proteins are suggested to play a role in reproduction; however, the role of these proteins in dairy cow reproduction remains to be elucidated. Their identification underscores the potential for proteins within exosomes to provide information on the fertility status and physiological condition of the cow. This may potentially lead to the development of prognostic tools and interventions to improving dairy cow fertility.
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Affiliation(s)
- Yong Qin Koh
- University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland 4029, Australia
| | - Hassendrini N Peiris
- University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland 4029, Australia
| | - Kanchan Vaswani
- University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland 4029, Australia
| | - Fatema B Almughlliq
- University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland 4029, Australia
| | - Susanne Meier
- DairyNZ Ltd., Private Bag 3221, Hamilton 3240, New Zealand
| | - Chris R Burke
- DairyNZ Ltd., Private Bag 3221, Hamilton 3240, New Zealand
| | - John R Roche
- DairyNZ Ltd., Private Bag 3221, Hamilton 3240, New Zealand; School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | | | - Buddhika J Arachchige
- University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland 4029, Australia
| | - Sarah Reed
- University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland 4029, Australia
| | - Murray D Mitchell
- University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland 4029, Australia.
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24
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Wei M, Gao Y, Lu B, Jiao Y, Liu X, Cui B, Hu S, Sun L, Mao S, Dong J, Yan L, Chen Z, Zhao Y. FKBP51 regulates decidualization through Ser473 dephosphorylation of AKT. Reproduction 2018; 155:283-295. [DOI: 10.1530/rep-17-0625] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 01/22/2018] [Indexed: 02/01/2023]
Abstract
Defective decidualization of human endometrial stromal cells (ESCs) has recently been highlighted as an underlying cause of implantation failure. FK-506-binding protein 51 (FKBP51) has been shown to participate in the steroid hormone response and the protein kinase B (AKT) regulation process, both of which are important pathways involved in decidualization. The objective of the present study was to investigate the potential effects and mechanisms of FKBP51 in the regulation of ESC decidualization. By performing immunohistochemical staining on an endometrial tissue microarray (TMA) derived from normal females, we found that FKBP51 expression was much higher in the luteal phase than in the follicular phase in ESCs. Primary ESCs were isolated from patients to build an in vitro decidualization model through co-culture with medroxyprogesterone acetate (MPA) and 8-bromoadenosine (cAMP). SC79, a specific AKT activator in various physiological and pathological conditions, and shRNA-FKBP51 were used to examine the roles of AKT and FKBP51 in decidualization. The Western blot and RT-PCR results showed that FKBP51, insulin-like growth factor-binding protein 1 (IGFBP1) and prolactin (PRL) expression increased in ESCs treated with MPA + cAMP; meanwhile, the level of p-Ser473 AKT (p-S473 AKT) decreased and forkhead box protein O1 (FOXO1A) expression increased. Decidualization was inhibited by the AKT activator SC79 and the transfection of FKBP51-shRNA by affecting protein synthesis, cell morphology, cell growth and cell cycle. Furthermore, this inhibition was rescued by FKBP51-cDNA transfection. The results supported that FKBP51 promotes decidualization by reducing the Ser473 phosphorylation levels in AKT.
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Shelton LB, Koren J, Blair LJ. Imbalances in the Hsp90 Chaperone Machinery: Implications for Tauopathies. Front Neurosci 2017; 11:724. [PMID: 29311797 PMCID: PMC5744016 DOI: 10.3389/fnins.2017.00724] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 12/12/2017] [Indexed: 12/21/2022] Open
Abstract
The ATP-dependent 90 kDa heat shock protein, Hsp90, is a major regulator of protein triage, from assisting in nascent protein folding to refolding or degrading aberrant proteins. Tau, a microtubule associated protein, aberrantly accumulates in Alzheimer's disease (AD) and other neurodegenerative diseases, deemed tauopathies. Hsp90 binds to and regulates tau fate in coordination with a diverse group of co-chaperones. Imbalances in chaperone levels and activity, as found in the aging brain, can contribute to disease onset and progression. For example, the levels of the Hsp90 co-chaperone, FK506-binding protein 51 kDa (FKBP51), progressively increase with age. In vitro and in vivo tau models demonstrated that FKBP51 synergizes with Hsp90 to increase neurotoxic tau oligomer production. Inversely, protein phosphatase 5 (PP5), which dephosphorylates tau to restore microtubule-binding function, is repressed with aging and activity is further repressed in AD. Similarly, levels of cyclophilin 40 (CyP40) are reduced in the aged brain and further repressed in AD. Interestingly, CyP40 was shown to breakup tau aggregates in vitro and prevent tau-induced neurotoxicity in vivo. Moreover, the only known stimulator of Hsp90 ATPase activity, Aha1, increases tau aggregation and toxicity. While the levels of Aha1 are not significantly altered with aging, increased levels have been found in AD brains. Overall, these changes in the Hsp90 heterocomplex could drive tau deposition and neurotoxicity. While the relationship of tau and Hsp90 in coordination with these co-chaperones is still under investigation, it is clear that imbalances in these proteins with aging can contribute to disease onset and progression. This review highlights the current understanding of how the Hsp90 family of molecular chaperones regulates tau or other misfolded proteins in neurodegenerative diseases with a particular emphasis on the impact of aging.
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Affiliation(s)
- Lindsey B Shelton
- Department of Molecular Medicine and USF Health Byrd Institute, University of South Florida, Tampa, FL, United States
| | - John Koren
- Department of Molecular Medicine and USF Health Byrd Institute, University of South Florida, Tampa, FL, United States
| | - Laura J Blair
- Department of Molecular Medicine and USF Health Byrd Institute, University of South Florida, Tampa, FL, United States
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Lussier JG, Diouf MN, Lévesque V, Sirois J, Ndiaye K. Gene expression profiling of upregulated mRNAs in granulosa cells of bovine ovulatory follicles following stimulation with hCG. Reprod Biol Endocrinol 2017; 15:88. [PMID: 29100496 PMCID: PMC5670713 DOI: 10.1186/s12958-017-0306-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 10/16/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ovulation and luteinization of follicles are complex biological processes initiated by the preovulatory luteinizing hormone surge. The objective of this study was to identify genes that are differentially expressed in bovine granulosa cells (GC) of ovulatory follicles. METHODS Granulosa cells were collected during the first follicular wave of the bovine estrous cycle from dominant follicles (DF) and from ovulatory follicles (OF) obtained 24 h following injection of human chorionic gonadotropin (hCG). A granulosa cell subtracted cDNA library (OF-DF) was generated using suppression subtractive hybridization and screened. RESULTS Detection of genes known to be upregulated in bovine GC during ovulation, such as ADAMTS1, CAV1, EGR1, MMP1, PLAT, PLA2G4A, PTGES, PTGS2, RGS2, TIMP1, TNFAIP6 and VNN2 validated the physiological model and analytical techniques used. For a subset of genes that were identified for the first time, gene expression profiles were further compared by semiquantitative RT-PCR in follicles obtained at different developmental stages. Results confirmed an induction or upregulation of the respective mRNAs in GC of OF 24 h after hCG-injection compared with those of DF for the following genes: ADAMTS9, ARAF, CAPN2, CRISPLD2, FKBP5, GFPT2, KIT, KITLG, L3MBLT3, MRO, NUDT10, NUDT11, P4HA3, POSTN, PSAP, RBP1, SAT1, SDC4, TIMP2, TNC and USP53. In bovine GC, CRISPLD2 and POSTN mRNA were found as full-length transcript whereas L3MBLT3 mRNA was alternatively spliced resulting in a truncated protein missing the carboxy-terminal end amino acids, 774KNSHNEL780. Conversely, L3MBLT3 is expressed as a full-length mRNA in a bovine endometrial cell line. The 774KNSHNEL780 sequence is well conserved in all mammalian species and follows a SAM domain known to confer protein/protein interactions, which suggest a key function for these amino acids in the epigenetic control of gene expression. CONCLUSIONS We conclude that we have identified novel genes that are upregulated by hCG in bovine GC of OF, thereby providing novel insight into peri-ovulatory regulation of genes that contribute to ovulation and/or luteinization processes.
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Affiliation(s)
- Jacques G Lussier
- Centre de recherche en reproduction et fertilité, Faculté de médecine vétérinaire, Université de Montréal, 3200 Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada.
| | - Mame N Diouf
- Centre de recherche en reproduction et fertilité, Faculté de médecine vétérinaire, Université de Montréal, 3200 Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada
- Institut Sénégalais de Recherches Agricoles (ISRA) Laboratoire National de l'Elevage et de Recherches Vétérinaires (LNERV), BP 2057, Dakar-Hann, Sénégal
| | - Valérie Lévesque
- Centre de recherche en reproduction et fertilité, Faculté de médecine vétérinaire, Université de Montréal, 3200 Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada
| | - Jean Sirois
- Centre de recherche en reproduction et fertilité, Faculté de médecine vétérinaire, Université de Montréal, 3200 Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada
| | - Kalidou Ndiaye
- Centre de recherche en reproduction et fertilité, Faculté de médecine vétérinaire, Université de Montréal, 3200 Sicotte, St-Hyacinthe, Québec, J2S 2M2, Canada
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Bonner JM, Boulianne GL. Diverse structures, functions and uses of FK506 binding proteins. Cell Signal 2017; 38:97-105. [DOI: 10.1016/j.cellsig.2017.06.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 06/15/2017] [Accepted: 06/20/2017] [Indexed: 02/08/2023]
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Joshi NR, Miyadahira EH, Afshar Y, Jeong JW, Young SL, Lessey BA, Serafini PC, Fazleabas AT. Progesterone Resistance in Endometriosis Is Modulated by the Altered Expression of MicroRNA-29c and FKBP4. J Clin Endocrinol Metab 2017; 102:141-149. [PMID: 27778641 PMCID: PMC5413101 DOI: 10.1210/jc.2016-2076] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 10/21/2016] [Indexed: 01/21/2023]
Abstract
CONTEXT Endometriosis results in aberrant gene expression in the eutopic endometrium (EuE) and subsequent progesterone resistance. MicroRNA (miR) microarray data in a baboon model of endometriosis showed an increased expression of miR-29c. OBJECTIVES To explore the role of miR-29c in progesterone resistance in a subset of women with endometriosis. DESIGN MiR-29c expression was analyzed in the endometrium of baboons and women with or without endometriosis. The role in progesterone resistance and decidualization was analyzed by transfecting human uterine fibroblast cells with miR-29c. PATIENTS Subjects diagnosed with deep infiltrative endometriosis (DIE) by transvaginal ultrasound with bowel preparation underwent surgical excision of endometriosis. Eutopic secretory endometrium was collected pre- and postoperatively. Women with normal EuE and without DIE served as controls. RESULTS Quantitative reverse transcription polymerase chain reaction demonstrated that miR-29c expression increased, while the transcript levels of its target, FK506-binding protein 4 (FKBP4), decreased in the EuE of baboons following the induction of endometriosis. FKBP4 messenger RNA and decidual markers were statistically significantly decreased in decidualized human uterine fibroblast cells transfected with a miR-29c mimic compared with controls. Human data corroborated our baboon data and demonstrated higher expression of miR-29c in endometriosis EuE compared with normal EuE. MiR-29c was significantly decreased in endometriosis EuE postoperatively compared with preoperative tissues, and FKBP4 showed an inverse trend following radical laparoscopic resection surgery. CONCLUSIONS We demonstrate that miR-29c expression is increased in EuE of baboons and women with endometriosis, which might contribute to a compromised progesterone response by diminishing the levels of FKBP4. Resection of DIE is likely to reverse the progesterone resistance associated with endometriosis in women.
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Affiliation(s)
- Niraj R. Joshi
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University, Grand Rapids, Michigan 49503;
| | | | - Yalda Afshar
- Department of Obstetrics and Gynecology, University of California, Los Angeles, California 90095;
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University, Grand Rapids, Michigan 49503;
| | - Steven L. Young
- Department of Obstetrics and Gynecology, The University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599;
| | - Bruce A. Lessey
- Greenville Hospital System, University of South Carolina School of Medicine, Greenville, South Carolina 29605; and
| | - Paulo C. Serafini
- Discipline of Gynecology, Department of Obstetrics and Gynecology, Hospital das clinicas, faculdade de Medicina, Universidade de São Paulo, São Paulo 01246-903, Brazil
| | - Asgerally T. Fazleabas
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University, Grand Rapids, Michigan 49503;
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Stechschulte LA, Qiu B, Warrier M, Hinds TD, Zhang M, Gu H, Xu Y, Khuder SS, Russo L, Najjar SM, Lecka-Czernik B, Yong W, Sanchez ER. FKBP51 Null Mice Are Resistant to Diet-Induced Obesity and the PPARγ Agonist Rosiglitazone. Endocrinology 2016; 157:3888-3900. [PMID: 27442117 PMCID: PMC5045506 DOI: 10.1210/en.2015-1996] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
FK506-binding protein-51 (FKBP51) is a molecular cochaperone recently shown to be a positive regulator of peroxisome proliferator-activated receptor (PPAR)γ, the master regulator of adipocyte differentiation and function. In cellular models of adipogenesis, loss of FKBP51 not only reduced PPARγ activity but also reduced lipid accumulation, suggesting that FKBP51 knock-out (KO) mice might have insufficient development of adipose tissue and lipid storage ability. This model was tested by examining wild-type (WT) and FKBP51-KO mice under regular and high-fat diet conditions. Under both diets, FKBP51-KO mice were resistant to weight gain, hepatic steatosis, and had greatly reduced white adipose tissue (WAT) but higher amounts of brown adipose tissue. Under high-fat diet, KO mice were highly resistant to adiposity and exhibited reduced plasma lipids and elevated glucose and insulin tolerance. Profiling of perigonadal and sc WAT revealed elevated expression of brown adipose tissue lineage genes in KO mice that correlated increased energy expenditure and a shift of substrate oxidation to carbohydrates, as measured by indirect calorimetry. To directly test PPARγ involvement, WT and KO mice were fed rosiglitazone agonist. In WT mice, rosiglitazone induced whole-body weight gain, increased WAT mass, a shift of substrate oxidation to lipids, and elevated expression of PPARγ-regulated lipogenic genes in WAT. In contrast, KO mice had reduced rosiglitazone responses for these parameters. Our results identify FKBP51 as an important regulator of PPARγ in WAT and as a potential new target in the treatment of obesity and diabetes.
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Young MJ, Geiszler PC, Pardon MC. A novel role for the immunophilin FKBP52 in motor coordination. Behav Brain Res 2016; 313:97-110. [PMID: 27418439 DOI: 10.1016/j.bbr.2016.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 07/09/2016] [Accepted: 07/10/2016] [Indexed: 02/01/2023]
Abstract
FKBP52 is a ubiquitously distributed immunophilin that has been associated with wide-ranging functions in cell signalling as well as hormonal and stress responses. Amongst other pathways, it acts via complex-formation with corticosteroid receptors and has consequently been associated with stress- and age- related neurodegenerative disorders including Alzheimer's and Parkinson's diseases. Reduced levels of FKBP52 have been linked to tau dysfunction and amyloid beta toxicity in AD. However, FKBP52's role in cognition and neurodegenerative disorder-like phenotypes remain to be elucidated. The present study aimed therefore at investigating the cognitive and behavioural effects of reduced FKBP52 levels of genetically modified mice during ageing. Female and male FKBP52(+/+), FKBP52(+/-) and FKBP52(-/-) mice were compared at two-, ten-, twelve-, fifteen- and eighteen-months-of-age in a series of behavioural tests covering specie-specific behaviour, motor activity and coordination, fear-, spatial and recognition memory as well as curiosity and emotionality. Whilst cognitively unimpaired, FKBP52(+/-) mice performed worse on an accelerating rotating rod than FKBP52(+/+) littermates across all age-groups suggesting that FKBP52 is involved in processes controlling motor coordination. This deficit did not exacerbate with age but did worsen with repeated testing; pointing towards a role for FKBP52 in learning of tasks requiring motor coordination abilities. This study contributes to the knowledge base of FKBP52's implication in neurodegenerative diseases by demonstrating that FKBP52 by itself does not directly affect cognition and may therefore rather play an indirect, modulatory role in the functional pathology of AD, whereas it directly affects motor coordination, an early sign of neurodegenerative damages to the brain.
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Affiliation(s)
- Matthew J Young
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom
| | - Philippine C Geiszler
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom
| | - Marie-Christine Pardon
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom.
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31
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Philp LK, Day TK, Butler MS, Laven-Law G, Jindal S, Hickey TE, Scher HI, Butler LM, Tilley WD. Small Glutamine-Rich Tetratricopeptide Repeat-Containing Protein Alpha (SGTA) Ablation Limits Offspring Viability and Growth in Mice. Sci Rep 2016; 6:28950. [PMID: 27358191 PMCID: PMC4928056 DOI: 10.1038/srep28950] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 06/07/2016] [Indexed: 01/26/2023] Open
Abstract
Small glutamine-rich tetratricopeptide repeat-containing protein α (SGTA) has been implicated as a co-chaperone and regulator of androgen and growth hormone receptor (AR, GHR) signalling. We investigated the functional consequences of partial and full Sgta ablation in vivo using Cre-lox Sgta-null mice. Sgta(+/-) breeders generated viable Sgta(-/-) offspring, but at less than Mendelian expectancy. Sgta(-/-) breeders were subfertile with small litters and higher neonatal death (P < 0.02). Body size was significantly and proportionately smaller in male and female Sgta(-/-) (vs WT, Sgta(+/-) P < 0.001) from d19. Serum IGF-1 levels were genotype- and sex-dependent. Food intake, muscle and bone mass and adiposity were unchanged in Sgta(-/-). Vital and sex organs had normal relative weight, morphology and histology, although certain androgen-sensitive measures such as penis and preputial size, and testis descent, were greater in Sgta(-/-). Expression of AR and its targets remained largely unchanged, although AR localisation was genotype- and tissue-dependent. Generally expression of other TPR-containing proteins was unchanged. In conclusion, this thorough investigation of SGTA-null mutation reports a mild phenotype of reduced body size. The model's full potential likely will be realised by genetic crosses with other models to interrogate the role of SGTA in the many diseases in which it has been implicated.
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Affiliation(s)
- Lisa K. Philp
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Tanya K. Day
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Miriam S. Butler
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Geraldine Laven-Law
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Shalini Jindal
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Theresa E. Hickey
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | | | - Lisa M. Butler
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
- Freemason’s Foundation Centre for Men’s Health, School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Wayne D. Tilley
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
- Freemason’s Foundation Centre for Men’s Health, School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
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Hybrid Sterility in Rice (Oryza sativa L.) Involves the Tetratricopeptide Repeat Domain Containing Protein. Genetics 2016; 203:1439-51. [PMID: 27182946 DOI: 10.1534/genetics.115.183848] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 04/20/2016] [Indexed: 11/18/2022] Open
Abstract
Intersubspecific hybrid sterility is a common form of reproductive isolation in rice (Oryza sativa L.), which significantly hampers the utilization of heterosis between indica and japonica varieties. Here, we elucidated the mechanism of S7, which specially causes Aus-japonica/indica hybrid female sterility, through cytological and genetic analysis, map-based cloning, and transformation experiments. Abnormal positioning of polar nuclei and smaller embryo sac were observed in F1 compared with male and female parents. Female gametes carrying S7(cp) and S7(i) were aborted in S7(ai)/S7(cp) and S7(ai)/S7(i), respectively, whereas they were normal in both N22 and Dular possessing a neutral allele, S7(n) S7 was fine mapped to a 139-kb region in the centromere region on chromosome 7, where the recombination was remarkably suppressed due to aggregation of retrotransposons. Among 16 putative open reading frames (ORFs) localized in the mapping region, ORF3 encoding a tetratricopeptide repeat domain containing protein was highly expressed in the pistil. Transformation experiments demonstrated that ORF3 is the candidate gene: downregulated expression of ORF3 restored spikelet fertility and eliminated absolutely preferential transmission of S7(ai) in heterozygote S7(ai)/S7(cp); sterility occurred in the transformants Cpslo17-S7(ai) Our results may provide implications for overcoming hybrid embryo sac sterility in intersubspecific hybrid rice and utilization of hybrid heterosis for cultivated rice improvement.
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Feng X, Sippel C, Bracher A, Hausch F. Structure–Affinity Relationship Analysis of Selective FKBP51 Ligands. J Med Chem 2015; 58:7796-806. [DOI: 10.1021/acs.jmedchem.5b00785] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xixi Feng
- Department
of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Kraepelinstrasse 2, 80804 Munich, Germany
| | - Claudia Sippel
- Department
of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Kraepelinstrasse 2, 80804 Munich, Germany
| | - Andreas Bracher
- Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Felix Hausch
- Department
of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Kraepelinstrasse 2, 80804 Munich, Germany
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Kim TH, Yoo JY, Wang Z, Lydon JP, Khatri S, Hawkins SM, Leach RE, Fazleabas AT, Young SL, Lessey BA, Ku BJ, Jeong JW. ARID1A Is Essential for Endometrial Function during Early Pregnancy. PLoS Genet 2015; 11:e1005537. [PMID: 26378916 PMCID: PMC4574948 DOI: 10.1371/journal.pgen.1005537] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 08/27/2015] [Indexed: 02/03/2023] Open
Abstract
AT-rich interactive domain 1A gene (ARID1A) loss is a frequent event in endometriosis-associated ovarian carcinomas. Endometriosis is a disease in which tissue that normally grows inside the uterus grows outside the uterus, and 50% of women with endometriosis are infertile. ARID1A protein levels were significantly lower in the eutopic endometrium of women with endometriosis compared to women without endometriosis. However, an understanding of the physiological effects of ARID1A loss remains quite poor, and the function of Arid1a in the female reproductive tract has remained elusive. In order to understand the role of Arid1a in the uterus, we have generated mice with conditional ablation of Arid1a in the PGR positive cells (Pgrcre/+Arid1af/f; Arid1ad/d). Ovarian function and uterine development of Arid1ad/d mice were normal. However, Arid1ad/d mice were sterile due to defective embryo implantation and decidualization. The epithelial proliferation was significantly increased in Arid1ad/d mice compared to control mice. Enhanced epithelial estrogen activity and reduced epithelial PGR expression, which impedes maturation of the receptive uterus, was observed in Arid1ad/d mice at the peri-implantation period. The microarray analysis revealed that ARID1A represses the genes related to cell cycle and DNA replication. We showed that ARID1A positively regulates Klf15 expression with PGR to inhibit epithelial proliferation at peri-implantation. Our results suggest that Arid1a has a critical role in modulating epithelial proliferation which is a critical requisite for fertility. This finding provides a new signaling pathway for steroid hormone regulation in female reproductive biology and furthers our understanding of the molecular mechanisms that underlie dysregulation of hormonal signaling in human reproductive disorders such as endometriosis.
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Affiliation(s)
- Tae Hoon Kim
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America
| | - Jung-Yoon Yoo
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America
| | - Zhong Wang
- Department of Cardiac Surgery, University of Michigan, Ann Arbor, Michigan, United States of America
| | - John P. Lydon
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Shikha Khatri
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Shannon M. Hawkins
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Richard E. Leach
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America
- Department of Women’s Health, Spectrum Health System, Grand Rapids, Michigan, United States of America
| | - Asgerally T. Fazleabas
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America
- Department of Women’s Health, Spectrum Health System, Grand Rapids, Michigan, United States of America
| | - Steven L. Young
- Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Bruce A. Lessey
- Department of Obstetrics and Gynecology, University Medical Group, Greenville Health System, Greenville, South Carolina, United States of America
| | - Bon Jeong Ku
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
- * E-mail: (BJK); (JWJ)
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America
- Department of Women’s Health, Spectrum Health System, Grand Rapids, Michigan, United States of America
- * E-mail: (BJK); (JWJ)
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35
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Grimm SL, Ward RD, Obr AE, Franco HL, Fernandez-Valdivia R, Kim JS, Roberts JM, Jeong JW, DeMayo FJ, Lydon JP, Edwards DP, Weigel NL. A role for site-specific phosphorylation of mouse progesterone receptor at serine 191 in vivo. Mol Endocrinol 2015; 28:2025-37. [PMID: 25333515 DOI: 10.1210/me.2014-1206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Progesterone receptors (PRs) are phosphorylated on multiple sites, and a variety of roles for phosphorylation have been suggested by cell-based studies. Previous studies using PR-null mice have shown that PR plays an important role in female fertility, regulation of uterine growth, the uterine decidualization response, and proliferation as well as ductal side-branching and alveologenesis in the mammary gland. To study the role of PR phosphorylation in vivo, a mouse was engineered with homozygous replacement of PR with a PR serine-to-alanine mutation at amino acid 191. No overt phenotypes were observed in the mammary glands or uteri of PR S191A treated with progesterone (P4). In contrast, although PR S191A mice were fertile, litters were 19% smaller than wild type and the estrous cycle was lengthened slightly. Moreover, P4-dependent gene regulation in primary mammary epithelial cells (MECs) was altered in a gene-selective manner. MECs derived from wild type and PR S191A mice were grown in a three-dimensional culture. Both formed acinar structures that were morphologically similar, and proliferation was stimulated equally by P4. However, P4 induction of receptor activator of nuclear factor-κB ligand and calcitonin was selectively reduced in S191A cultures. These differences were confirmed in freshly isolated MECs. Chromatin immunoprecipitation analysis showed that the binding of S191A PR to some of the receptor activator of nuclear factor-κB ligand enhancers and a calcitonin enhancer was substantially reduced. Thus, the elimination of a single phosphorylation site is sufficient to modulate PR activity in vivo. PR contains many phosphorylation sites, and the coordinate regulation of multiple sites is a potential mechanism for selective modulation of PR function.
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Affiliation(s)
- Sandra L Grimm
- Departments of Molecular and Cellular Biology (S.L.G., R.D.W., A.E.O., H.L.F., R.F.-V., J.-S.K., J.M.R., J.-W.J., F.J.D., J.P.L., D.P.E., N.L.W.) and Pathology and Immunology (D.P.E.), Baylor College of Medicine, Houston, Texas 77030
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Ortega HH, Marelli BE, Rey F, Amweg AN, Díaz PU, Stangaferro ML, Salvetti NR. Molecular aspects of bovine cystic ovarian disease pathogenesis. Reproduction 2015; 149:R251-64. [DOI: 10.1530/rep-14-0618] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 03/12/2015] [Indexed: 11/08/2022]
Abstract
Cystic ovarian disease (COD) is one of the main causes of reproductive failure in cattle and causes severe economic loss to the dairy farm industry because it increases both days open in the post partum period and replacement rates due to infertility. This disease is the consequence of the failure of a mature follicle to ovulate at the time of ovulation in the estrous cycle. This review examines the evidence for the role of altered steroid and gonadotropin signaling systems and the proliferation/apoptosis balance in the ovary with cystic structures. This evidence suggests that changes in the expression of ovarian molecular components associated with these cellular mechanisms could play a fundamental role in the pathogenesis of COD. The evidence also shows that gonadotropin receptor expression in bovine cystic follicles is altered, which suggests that changes in the signaling system of gonadotropins could play a fundamental role in the pathogenesis of conditions characterized by altered ovulation, such as COD. Ovaries from animals with COD exhibit a disrupted steroid receptor pattern with modifications in the expression of coregulatory proteins. These changes in the pathways of endocrine action would trigger the changes in proliferation and apoptosis underlying the aberrant persistence of follicular cysts.Free Spanish abstract: A Spanish translation of this abstract is freely available at http://www.reproduction-online.org/content/149/6/R251/suppl/DC1.
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Mazaira GI, Camisay MF, De Leo S, Erlejman AG, Galigniana MD. Biological relevance of Hsp90-binding immunophilins in cancer development and treatment. Int J Cancer 2015; 138:797-808. [PMID: 25754838 DOI: 10.1002/ijc.29509] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 02/17/2015] [Indexed: 12/14/2022]
Abstract
Immunophilins are a family of intracellular receptors for immunosuppressive drugs. Those immunophilins that are related to immunosuppression are the smallest proteins of the family, i.e., FKBP12 and CyPA, whereas the other members of the family have higher molecular weight because the show additional domains to the drug-binding site. Among these extra domains, the TPR-domain is perhaps the most relevant because it permits the interaction of high molecular weight immunophilins with the 90-kDa heat-shock protein, Hsp90. This essential molecular chaperone regulates the biological function of several protein-kinases, oncogenes, protein phosphatases, transcription factors and cofactors . Hsp90-binding immunophilins where first characterized due to their association with steroid receptors. They regulate the cytoplasmic transport and the subcellular localization of these and other Hsp90 client proteins, as well as transcriptional activity, cell proliferation, cell differentiation and apoptosis. Hsp90-binding immunophilins are frequently overexpressed in several types of cancers and play a key role in cell survival. In this article we analyze the most important biological actions of the best characterized Hsp90-binding immunophilins in both steroid receptor function and cancer development and discuss the potential use of these immunophilins for therapeutic purposes as potential targets of specific small molecules.
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Affiliation(s)
- Gisela I Mazaira
- Departamento De Química Biológica, Facultad De Ciencias Exactas Y Naturales, Universidad De Buenos Aires and IQUIBICEN-CONICET, Buenos Aires, Argentina
| | - María F Camisay
- Departamento De Química Biológica, Facultad De Ciencias Exactas Y Naturales, Universidad De Buenos Aires and IQUIBICEN-CONICET, Buenos Aires, Argentina
| | - Sonia De Leo
- Departamento De Química Biológica, Facultad De Ciencias Exactas Y Naturales, Universidad De Buenos Aires and IQUIBICEN-CONICET, Buenos Aires, Argentina
| | - Alejandra G Erlejman
- Departamento De Química Biológica, Facultad De Ciencias Exactas Y Naturales, Universidad De Buenos Aires and IQUIBICEN-CONICET, Buenos Aires, Argentina
| | - Mario D Galigniana
- Departamento De Química Biológica, Facultad De Ciencias Exactas Y Naturales, Universidad De Buenos Aires and IQUIBICEN-CONICET, Buenos Aires, Argentina.,Instituto De Biología Y Medicina Experimental-CONICET, Buenos Aires, Argentina
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Cha JM, Dey SK. Reflections on Rodent Implantation. REGULATION OF IMPLANTATION AND ESTABLISHMENT OF PREGNANCY IN MAMMALS 2015; 216:69-85. [DOI: 10.1007/978-3-319-15856-3_5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Gellersen B, Brosens JJ. Cyclic decidualization of the human endometrium in reproductive health and failure. Endocr Rev 2014; 35:851-905. [PMID: 25141152 DOI: 10.1210/er.2014-1045] [Citation(s) in RCA: 626] [Impact Index Per Article: 62.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Decidualization denotes the transformation of endometrial stromal fibroblasts into specialized secretory decidual cells that provide a nutritive and immunoprivileged matrix essential for embryo implantation and placental development. In contrast to most mammals, decidualization of the human endometrium does not require embryo implantation. Instead, this process is driven by the postovulatory rise in progesterone levels and increasing local cAMP production. In response to falling progesterone levels, spontaneous decidualization causes menstrual shedding and cyclic regeneration of the endometrium. A growing body of evidence indicates that the shift from embryonic to maternal control of the decidual process represents a pivotal evolutionary adaptation to the challenge posed by invasive and chromosomally diverse human embryos. This concept is predicated on the ability of decidualizing stromal cells to respond to individual embryos in a manner that either promotes implantation and further development or facilitates early rejection. Furthermore, menstruation and cyclic regeneration involves stem cell recruitment and renders the endometrium intrinsically capable of adapting its decidual response to maximize reproductive success. Here we review the endocrine, paracrine, and autocrine cues that tightly govern this differentiation process. In response to activation of various signaling pathways and genome-wide chromatin remodeling, evolutionarily conserved transcriptional factors gain access to the decidua-specific regulatory circuitry. Once initiated, the decidual process is poised to transit through distinct phenotypic phases that underpin endometrial receptivity, embryo selection, and, ultimately, resolution of pregnancy. We discuss how disorders that subvert the programming, initiation, or progression of decidualization compromise reproductive health and predispose for pregnancy failure.
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Affiliation(s)
- Birgit Gellersen
- Endokrinologikum Hamburg (B.G.), 20251 Hamburg, Germany; and Division of Reproductive Health (J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom
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Selective inhibitors of the FK506-binding protein 51 by induced fit. Nat Chem Biol 2014; 11:33-7. [PMID: 25436518 DOI: 10.1038/nchembio.1699] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 10/09/2014] [Indexed: 01/17/2023]
Abstract
The FK506-binding protein 51 (FKBP51, encoded by the FKBP5 gene) is an established risk factor for stress-related psychiatric disorders such as major depression. Drug discovery for FKBP51 has been hampered by the inability to pharmacologically differentiate against the structurally similar but functional opposing homolog FKBP52, and all known FKBP ligands are unselective. Here, we report the discovery of the potent and highly selective inhibitors of FKBP51, SAFit1 and SAFit2. This new class of ligands achieves selectivity for FKBP51 by an induced-fit mechanism that is much less favorable for FKBP52. By using these ligands, we demonstrate that selective inhibition of FKBP51 enhances neurite elongation in neuronal cultures and improves neuroendocrine feedback and stress-coping behavior in mice. Our findings provide the structural and functional basis for the development of mechanistically new antidepressants.
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Cato L, Neeb A, Brown M, Cato ACB. Control of steroid receptor dynamics and function by genomic actions of the cochaperones p23 and Bag-1L. NUCLEAR RECEPTOR SIGNALING 2014; 12:e005. [PMID: 25422595 PMCID: PMC4242288 DOI: 10.1621/nrs.12005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 09/20/2014] [Indexed: 01/23/2023]
Abstract
Molecular chaperones encompass a group of unrelated proteins that facilitate the
correct assembly and disassembly of other macromolecular structures, which they
themselves do not remain a part of. They associate with a large and diverse set
of coregulators termed cochaperones that regulate their function and
specificity. Amongst others, chaperones and cochaperones regulate the activity
of several signaling molecules including steroid receptors, which upon ligand
binding interact with discrete nucleotide sequences within the nucleus to
control the expression of diverse physiological and developmental genes.
Molecular chaperones and cochaperones are typically known to provide the correct
conformation for ligand binding by the steroid receptors. While this
contribution is widely accepted, recent studies have reported that they further
modulate steroid receptor action outside ligand binding. They are thought to
contribute to receptor turnover, transport of the receptor to different
subcellular localizations, recycling of the receptor on chromatin and even
stabilization of the DNA-binding properties of the receptor. In addition to
these combined effects with molecular chaperones, cochaperones are reported to
have additional functions that are independent of molecular chaperones. Some of
these functions also impact on steroid receptor action. Two well-studied
examples are the cochaperones p23 and Bag-1L, which have been identified as
modulators of steroid receptor activity in nuclei. Understanding details of
their regulatory action will provide new therapeutic opportunities of
controlling steroid receptor action independent of the widespread effects of
molecular chaperones.
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Affiliation(s)
- Laura Cato
- Division of Molecular and Cellular Oncology, Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA (LC, MB) and Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany (AN, ACBC)
| | - Antje Neeb
- Division of Molecular and Cellular Oncology, Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA (LC, MB) and Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany (AN, ACBC)
| | - Myles Brown
- Division of Molecular and Cellular Oncology, Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA (LC, MB) and Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany (AN, ACBC)
| | - Andrew C B Cato
- Division of Molecular and Cellular Oncology, Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA (LC, MB) and Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany (AN, ACBC)
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Hinds TD, Stechschulte LA, Elkhairi F, Sanchez ER. Analysis of FK506, timcodar (VX-853) and FKBP51 and FKBP52 chaperones in control of glucocorticoid receptor activity and phosphorylation. Pharmacol Res Perspect 2014; 2:e00076. [PMID: 25505617 PMCID: PMC4186452 DOI: 10.1002/prp2.76] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 06/30/2014] [Accepted: 07/01/2014] [Indexed: 02/02/2023] Open
Abstract
The immunosuppressive ligand FK506 and the FK506-binding protein FKBP52 are stimulatory to glucocorticoid receptor (GR) activity. Here, we explore the underlying mechanism by comparing GR activity and phosphorylation status in response to FK506 and the novel nonimmunosuppressive ligand timcodar (VX-853) and in the presence and absence of FKBP52 and the closely related protein FKBP51. Using mouse embryonic fibroblast cells (MEFs) deficient knockout (KO) in FKBP51 or FKBP52, we show decreased GR activity at endogenous genes in 52KO cells, but increased activity in 51KO cells. In 52KO cells, elevated phosphorylation occurred at inhibitory serine 212 and decreased phosphorylation at the stimulatory S220 residue. In contrast, 51KO cells showed increased GR phosphorylation at the stimulatory residues S220 and S234. In wild-type (WT) MEF cells, timcodar, like FK506, potentiated dexamethasone-induced GR transcriptional activity at two endogenous genes. Using 52KO and 51KO MEF cells, FK506 potentiated GR activity in 51KO cells but could not do so in 52KO cells, suggesting FKBP52 as the major target of FK506 action. Like FK506, timcodar potentiated GR in 51KO cells, but it also increased GR activity in 52KO cells. Knock-down of FKBP51 in the 52KO cells showed that the latter effect of timcodar required FKBP51. Thus, timcodar appears to have a dual specificity for FKBP51 and FKBP52. This work demonstrates phosphorylation as an important mechanism in FKBP control of GR and identifies the first nonimmunosuppressive macrolide capable of targeting GR action.
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Affiliation(s)
- Terry D Hinds
- Center for Diabetes and Endocrine Research, Department of Physiology & Pharmacology, University of Toledo College of Medicine Toledo, Ohio, 43614 ; Center for Hypertension and Personalized Medicine, Department of Physiology & Pharmacology, University of Toledo College of Medicine Toledo, Ohio, 43614
| | - Lance A Stechschulte
- Center for Diabetes and Endocrine Research, Department of Physiology & Pharmacology, University of Toledo College of Medicine Toledo, Ohio, 43614
| | - Fadel Elkhairi
- Department of Urology, University of Toledo College of Medicine Toledo, Ohio, 43614
| | - Edwin R Sanchez
- Center for Diabetes and Endocrine Research, Department of Physiology & Pharmacology, University of Toledo College of Medicine Toledo, Ohio, 43614
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Erlejman AG, De Leo SA, Mazaira GI, Molinari AM, Camisay MF, Fontana V, Cox MB, Piwien-Pilipuk G, Galigniana MD. NF-κB transcriptional activity is modulated by FK506-binding proteins FKBP51 and FKBP52: a role for peptidyl-prolyl isomerase activity. J Biol Chem 2014; 289:26263-26276. [PMID: 25104352 DOI: 10.1074/jbc.m114.582882] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Hsp90 binding immunophilins FKBP51 and FKBP52 modulate steroid receptor trafficking and hormone-dependent biological responses. With the purpose to expand this model to other nuclear factors that are also subject to nuclear-cytoplasmic shuttling, we analyzed whether these immunophilins modulate NF-κB signaling. It is demonstrated that FKBP51 impairs both the nuclear translocation rate of NF-κB and its transcriptional activity. The inhibitory action of FKBP51 requires neither the peptidylprolyl-isomerase activity of the immunophilin nor its association with Hsp90. The TPR domain of FKBP51 is essential. On the other hand, FKBP52 favors the nuclear retention time of RelA, its association to a DNA consensus binding sequence, and NF-κB transcriptional activity, the latter effect being strongly dependent on the peptidylprolyl-isomerase activity and also on the TPR domain of FKBP52, but its interaction with Hsp90 is not required. In unstimulated cells, FKBP51 forms endogenous complexes with cytoplasmic RelA. Upon cell stimulation with phorbol ester, the NF-κB soluble complex exchanges FKBP51 for FKBP52, and the NF-κB biological effect is triggered. Importantly, FKBP52 is functionally recruited to the promoter region of NF-κB target genes, whereas FKBP51 is released. Competition assays demonstrated that both immunophilins antagonize one another, and binding assays with purified proteins suggest that the association of RelA and immunophilins could be direct. These observations suggest that the biological action of NF-κB in different cell types could be positively regulated by a high FKBP52/FKBP51 expression ratio by favoring NF-κB nuclear retention, recruitment to the promoter regions of target genes, and transcriptional activity.
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Affiliation(s)
- Alejandra G Erlejman
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Química Biológica de Ciencias Exactas y Naturales (IQUIBICEN)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, C1428ADN Argentina
| | - Sonia A De Leo
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Química Biológica de Ciencias Exactas y Naturales (IQUIBICEN)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, C1428ADN Argentina
| | - Gisela I Mazaira
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Química Biológica de Ciencias Exactas y Naturales (IQUIBICEN)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, C1428ADN Argentina
| | - Alejandro M Molinari
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Química Biológica de Ciencias Exactas y Naturales (IQUIBICEN)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, C1428ADN Argentina
| | - María Fernanda Camisay
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Química Biológica de Ciencias Exactas y Naturales (IQUIBICEN)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, C1428ADN Argentina
| | - Vanina Fontana
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Química Biológica de Ciencias Exactas y Naturales (IQUIBICEN)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, C1428ADN Argentina
| | - Marc B Cox
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas, El Paso, Texas 79968
| | - Graciela Piwien-Pilipuk
- Laboratorio de Arquitectura Nuclear, Instituto de Biología y Medicina Experimental/CONICET, Buenos Aires C1428ADN, Argentina, and
| | - Mario D Galigniana
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Química Biológica de Ciencias Exactas y Naturales (IQUIBICEN)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, C1428ADN Argentina,; Laboratorio de Receptores Nucleares, Instituto de Biología y Medicina Experimental/CONICET, Buenos Aires C1428ADN, Argentina.
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Bracher A, Kozany C, Hähle A, Wild P, Zacharias M, Hausch F. Crystal structures of the free and ligand-bound FK1-FK2 domain segment of FKBP52 reveal a flexible inter-domain hinge. J Mol Biol 2013; 425:4134-44. [PMID: 23933011 DOI: 10.1016/j.jmb.2013.07.041] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 07/30/2013] [Accepted: 07/31/2013] [Indexed: 12/11/2022]
Abstract
The human Hsp90 co-chaperone FKBP52 belongs to the family of FK506-binding proteins, which act as peptidyl-prolyl isomerases. FKBP52 specifically enhances the signaling of steroid hormone receptors, modulates ion channels and regulates neuronal outgrowth dynamics. In turn, small-molecule ligands of FKBP52 have been suggested as potential neurotrophic or anti-prostate cancer agents. The usefulness of available ligands is however limited by a lack of selectivity. The immunophilin FKBP52 is composed of three domains, an FK506-binding domain with peptidyl-prolyl isomerase activity, an FKBP-like domain of unknown function and a TPR-clamp domain, which recognizes the C-terminal peptide of Hsp90 with high affinity. The herein reported crystal structures of FKBP52 reveal that the short linker connecting the FK506-binding domain and the FKBP-like domain acts as a flexible hinge. This enhanced flexibility and its modulation by phosphorylation might explain some of the functional antagonism between the closely related homologs FKBP51 and FKBP52. We further present two co-crystal structures of FKBP52 in complex with the prototypic ligand FK506 and a synthetic analog thereof. These structures revealed the molecular interactions in great detail, which enabled in-depth comparison with the corresponding complexes of the other cytosolic FKBPs, FKBP51 and FKBP12. The observed subtle differences provide crucial insights for the rational design of ligands with improved selectivity for FKBP52.
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Affiliation(s)
- Andreas Bracher
- Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany.
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Trotta AP, Need EF, Selth LA, Chopra S, Pinnock CB, Leach DA, Coetzee GA, Butler LM, Tilley WD, Buchanan G. Knockdown of the cochaperone SGTA results in the suppression of androgen and PI3K/Akt signaling and inhibition of prostate cancer cell proliferation. Int J Cancer 2013; 133:2812-23. [PMID: 23740762 DOI: 10.1002/ijc.28310] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 05/14/2013] [Indexed: 01/22/2023]
Abstract
Solid tumors have an increased reliance on Hsp70/Hsp90 molecular chaperones for proliferation, survival and maintenance of intracellular signaling systems. An underinvestigated component of the chaperone system is the tetratricopeptide repeat (TPR)-containing cochaperone, which coordinates Hsp70/Hsp90 involvement on client proteins as well as having diverse individual actions. A potentially important cochaperone in prostate cancer (PCa) is small glutamine-rich TPR-containing protein alpha (SGTA), which interacts with the androgen receptor (AR) and other critical cancer-related client proteins. In this study, the authors used small interfering RNA coupled with genome-wide expression profiling to investigate the biological significance of SGTA in PCa and its influence on AR signaling. Knockdown of SGTA for 72 hr in PCa C4-2B cells significantly altered expression of >1,900 genes (58% decreased) and reduced cell proliferation (p < 0.05). The regulation of 35% of 5α-dihydrotestosterone (DHT) target genes was affected by SGTA knockdown, with gene-specific effects on basal or DHT-induced expression or both. Pathway analysis revealed a role for SGTA in p53, generic PCa and phosphoinositol kinase (PI3K) signaling pathways; the latter evident by a reduction in PI3K subunit p100β levels and decreased phosphorylated Akt. Immunohistochemical analysis of 64 primary advanced PCa samples showed a significant increase in the AR:SGTA ratio in cancerous lesions compared to patient-matched benign prostatic hyperplasia tissue (p < 0.02). This study not only provides insight into the biological actions of SGTA and its effect on genome-wide AR transcriptional activity and other therapeutically targeted intracellular signaling pathways but also provides evidence for PCa-specific alterations in SGTA expression.
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Affiliation(s)
- Andrew P Trotta
- Cancer Biology Group, Freemasons Foundation Centre for Men's Health, Basil Hetzel Institute for Translational Health Research, Department of Medicine, University of Adelaide, Adelaide, Australia
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Philp LK, Butler MS, Hickey TE, Butler LM, Tilley WD, Day TK. SGTA: a new player in the molecular co-chaperone game. Discov Oncol 2013; 4:343-57. [PMID: 23818240 PMCID: PMC7091355 DOI: 10.1007/s12672-013-0151-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/12/2013] [Indexed: 12/25/2022] Open
Abstract
Small glutamine-rich tetratricopeptide repeat-containing protein α (SGTA) is a steroid receptor molecular co-chaperone that may substantially influence hormone action and, consequently, hormone-mediated carcinogenesis. To date, published studies describe SGTA as a protein that is potentially critical in a range of biological processes, including viral infection, cell division, mitosis, and cell cycle checkpoint activation. SGTA interacts with the molecular chaperones, heat shock protein 70 (HSP70) and HSP90, and with steroid receptor complexes, including those containing the androgen receptor. Steroid receptors are critical for maintaining cell growth and differentiation in hormonally regulated tissues, such as male and female reproductive tissues, and also play a role in disease states involving these tissues. There is growing evidence that, through its interactions with chaperones and steroid receptors, SGTA may be a key player in the pathogenesis of hormonally influenced disease states, including prostate cancer and polycystic ovary syndrome. Research into the function of SGTA has been conducted in several model organisms and cell types, with these studies showing that SGTA functionality is cell-specific and tissue-specific. However, very few studies have been replicated in multiple cell types or experimental systems. Although a broad range of functions have been attributed to SGTA, there is a serious lack of mechanistic information to describe how SGTA acts. In this review, published evidence linking SGTA with hormonally regulated disease states is summarized and discussed, highlighting the need for future research to more clearly define the biological function(s) of this potentially important co-chaperone.
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Affiliation(s)
- Lisa K. Philp
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, Faculty of Health Sciences, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000 Australia
| | - Miriam S. Butler
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, Faculty of Health Sciences, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000 Australia
| | - Theresa E. Hickey
- Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, Faculty of Health Sciences, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000 Australia
| | - Lisa M. Butler
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, Faculty of Health Sciences, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000 Australia
| | - Wayne D. Tilley
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, Faculty of Health Sciences, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000 Australia
| | - Tanya K. Day
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, Faculty of Health Sciences, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000 Australia
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Matsumoto H, Yamamoto Y, Shiota M, Kuruma H, Beraldi E, Matsuyama H, Zoubeidi A, Gleave M. Cotargeting Androgen Receptor and Clusterin Delays Castrate-Resistant Prostate Cancer Progression by Inhibiting Adaptive Stress Response and AR Stability. Cancer Res 2013; 73:5206-17. [PMID: 23786771 DOI: 10.1158/0008-5472.can-13-0359] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although androgen receptor (AR) pathway inhibitors prolong survival in castrate-resistant prostate cancer (CRPC), resistance rapidly develops and is often associated with increased stress-activated molecular chaperones like clusterin (CLU) and continued AR signaling. Because adaptive pathways activated by treatment facilitate development of acquired resistance, cotargeting the stress response, activated by AR inhibition and mediated through CLU, may create conditional lethality and improve outcomes. Here, we report that CLU is induced by AR antagonism and silencing using MDV3100 and antisense, respectively, to become highly expressed in castrate- and MDV3100-resistant tumors and cell lines. CLU, as well as AKT and mitogen-activated protein kinase (MAPK) signalosomes, increase in response to MDV3100-induced stress. Mechanistically, this stress response is coordinated by a feed-forward loop involving p90rsk (RPS6KA)-mediated phosphoactivation of YB-1 with subsequent induction of CLU. CLU inhibition repressed MDV3100-induced activation of AKT and MAPK pathways. In addition, when combined with MDV3100, CLU knockdown accelerated AR degradation and repressed AR transcriptional activity through mechanisms involving decreased YB-1-regulated expression of the AR cochaperone, FKBP52. Cotargeting the AR (with MDV3100) and CLU (with OGX-011) synergistically enhanced apoptotic rates over that seen with MDV3100 or OGX-011 monotherapy and delayed CRPC LNCaP tumor and prostate-specific antigen (PSA) progression in vivo. These data indicate that cotargeting adaptive stress pathways activated by AR pathway inhibitors, and mediated through CLU, creates conditional lethality and provides mechanistic and preclinical proof-of-principle to guide biologically rational combinatorial clinical trial design.
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Affiliation(s)
- Hiroaki Matsumoto
- Authors' Affiliations: The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada; and Department of Urology, Graduate School of Medicine, Yamaguchi University, Ube, Japan
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Cluning C, Ward BK, Rea SL, Arulpragasam A, Fuller PJ, Ratajczak T. The helix 1-3 loop in the glucocorticoid receptor LBD is a regulatory element for FKBP cochaperones. Mol Endocrinol 2013; 27:1020-35. [PMID: 23686112 DOI: 10.1210/me.2012-1023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The heat-shock protein 90 (Hsp90) cochaperone FK506-binding protein 52 (FKBP52) upregulates, whereas FKBP51 inhibits, hormone binding and nuclear targeting of the glucocorticoid receptor (GR). Decreased cortisol sensitivity in the guinea pig is attributed to changes within the helix 1 to helix 3 (H1-H3) loop of the guinea pig GR (gpGR) ligand-binding domain. It has been proposed that this loop serves as a contact point for FKBP52 and/or FKBP51 with receptor. We examined the role of the H1-H3 loop in GR activation by FKBP52 using a Saccharomyces cerevisiae model. The activity of rat GR (rGR) containing the gpGR H1-H3 loop substitutions was still potentiated by FKBP52, confirming the loop is not involved in primary FKBP52 interactions. Additional assays also excluded a role for other intervening loops between ligand-binding domain helices in direct interactions with FKBP52 associated with enhanced receptor activity. Complementary studies in FKBP51-deficient mouse embryo fibroblasts and HEK293 cells demonstrated that substitution of the gpGR H1-H3 loop residues into rGR dramatically increased receptor repression by FKBP51 without enhancing receptor-FKBP51 interaction and did not alter recruitment of endogenous Hsp90 and the p23 cochaperone to receptor complexes. FKBP51 suppression of the mutated rGR did not require FKBP51 peptidylprolyl cis-trans isomerase activity and was not disrupted by mutation of the FK1 proline-rich loop thought to mediate reciprocal FKBP influences on receptor activity. We conclude that the gpGR-specific mutations within the H1-H3 loop confer global changes within the GR-Hsp90 complex that favor FKBP51 repression over FKBP52 potentiation, thus identifying the loop as an important target for GR regulation by the FKBP cochaperones.
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Affiliation(s)
- Carmel Cluning
- Laboratory for Molecular Endocrinology, Western Australian Institute forMedical Research and the UWA Centre for Medical Research, The University of Western Australia, Australia
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Mechanisms of implantation: strategies for successful pregnancy. Nat Med 2013; 18:1754-67. [PMID: 23223073 DOI: 10.1038/nm.3012] [Citation(s) in RCA: 859] [Impact Index Per Article: 78.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 10/16/2012] [Indexed: 12/14/2022]
Abstract
Physiological and molecular processes initiated during implantation for pregnancy success are complex but highly organized. This review primarily highlights adverse ripple effects arising from defects during the peri-implantation period that perpetuate throughout pregnancy. These defects are reflected in aberrations in embryo spacing, decidualization, placentation and intrauterine embryonic growth, manifesting in preeclampsia, miscarriages and/or preterm birth. Understanding molecular signaling networks that coordinate strategies for successful implantation and decidualization may lead to approaches to improve the outcome of natural pregnancy and pregnancy conceived from in vitro fertilization.
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Zhang S, Lin H, Kong S, Wang S, Wang H, Wang H, Armant DR. Physiological and molecular determinants of embryo implantation. Mol Aspects Med 2013; 34:939-80. [PMID: 23290997 DOI: 10.1016/j.mam.2012.12.011] [Citation(s) in RCA: 346] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 12/25/2012] [Accepted: 12/26/2012] [Indexed: 01/19/2023]
Abstract
Embryo implantation involves the intimate interaction between an implantation-competent blastocyst and a receptive uterus, which occurs in a limited time period known as the window of implantation. Emerging evidence shows that defects originating during embryo implantation induce ripple effects with adverse consequences on later gestation events, highlighting the significance of this event for pregnancy success. Although a multitude of cellular events and molecular pathways involved in embryo-uterine crosstalk during implantation have been identified through gene expression studies and genetically engineered mouse models, a comprehensive understanding of the nature of embryo implantation is still missing. This review focuses on recent progress with particular attention to physiological and molecular determinants of blastocyst activation, uterine receptivity, blastocyst attachment and uterine decidualization. A better understanding of underlying mechanisms governing embryo implantation should generate new strategies to rectify implantation failure and improve pregnancy rates in women.
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Affiliation(s)
- Shuang Zhang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, PR China
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