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Asunción-Alvarez D, Palacios J, Ybañez-Julca RO, Rodriguez-Silva CN, Nwokocha C, Cifuentes F, Greensmith DJ. Calcium signaling in endothelial and vascular smooth muscle cells: sex differences and the influence of estrogens and androgens. Am J Physiol Heart Circ Physiol 2024; 326:H950-H970. [PMID: 38334967 DOI: 10.1152/ajpheart.00600.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 02/05/2024] [Accepted: 02/05/2024] [Indexed: 02/10/2024]
Abstract
Calcium signaling in vascular endothelial cells (ECs) and smooth muscle cells (VSMCs) is essential for the regulation of vascular tone. However, the changes to intracellular Ca2+ concentrations are often influenced by sex differences. Furthermore, a large body of evidence shows that sex hormone imbalance leads to dysregulation of Ca2+ signaling and this is a key factor in the pathogenesis of cardiovascular diseases. In this review, the effects of estrogens and androgens on vascular calcium-handling proteins are discussed, with emphasis on the associated genomic or nongenomic molecular mechanisms. The experimental models from which data were collected were also considered. The review highlights 1) in female ECs, transient receptor potential vanilloid 4 (TRPV4) and mitochondrial Ca2+ uniporter (MCU) enhance Ca2+-dependent nitric oxide (NO) generation. In males, only transient receptor potential canonical 3 (TRPC3) plays a fundamental role in this effect. 2) Female VSMCs have lower cytosolic Ca2+ levels than males due to differences in the activity and expression of stromal interaction molecule 1 (STIM1), calcium release-activated calcium modulator 1 (Orai1), calcium voltage-gated channel subunit-α1C (CaV1.2), Na+-K+-2Cl- symporter (NKCC1), and the Na+/K+-ATPase. 3) When compared with androgens, the influence of estrogens on Ca2+ homeostasis, vascular tone, and incidence of vascular disease is better documented. 4) Many studies use supraphysiological concentrations of sex hormones, which may limit the physiological relevance of outcomes. 5) Sex-dependent differences in Ca2+ signaling mean both sexes ought to be included in experimental design.
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Affiliation(s)
- Daniel Asunción-Alvarez
- Laboratorio de Bioquímica Aplicada, Química y Farmacia, Facultad de Ciencias de la Salud, Universidad Arturo Prat, Iquique, Chile
| | - Javier Palacios
- Laboratorio de Bioquímica Aplicada, Química y Farmacia, Facultad de Ciencias de la Salud, Universidad Arturo Prat, Iquique, Chile
| | - Roberto O Ybañez-Julca
- Departamento de Farmacología, Facultad de Farmacia y Bioquímica, Universidad Nacional de Trujillo, Trujillo, Perú
| | - Cristhian N Rodriguez-Silva
- Departamento de Farmacología, Facultad de Farmacia y Bioquímica, Universidad Nacional de Trujillo, Trujillo, Perú
| | - Chukwuemeka Nwokocha
- Department of Basic Medical Sciences Physiology Section, Faculty of Medical Sciences, The University of the West Indies, Kingston, Jamaica
| | - Fredi Cifuentes
- Laboratorio de Fisiología Experimental (EphyL), Instituto Antofagasta (IA), Universidad de Antofagasta, Antofagasta, Chile
| | - David J Greensmith
- Biomedical Research Centre, School of Science, Engineering and Environment, The University of Salford, Salford, United Kingdom
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2
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Cole BA, Becker EBE. Modulation and Regulation of Canonical Transient Receptor Potential 3 (TRPC3) Channels. Cells 2023; 12:2215. [PMID: 37759438 PMCID: PMC10526463 DOI: 10.3390/cells12182215] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Canonical transient receptor potential 3 (TRPC3) channel is a non-selective cation permeable channel that plays an essential role in calcium signalling. TRPC3 is highly expressed in the brain and also found in endocrine tissues and smooth muscle cells. The channel is activated directly by binding of diacylglycerol downstream of G-protein coupled receptor activation. In addition, TRPC3 is regulated by endogenous factors including Ca2+ ions, other endogenous lipids, and interacting proteins. The molecular and structural mechanisms underlying activation and regulation of TRPC3 are incompletely understood. Recently, several high-resolution cryogenic electron microscopy structures of TRPC3 and the closely related channel TRPC6 have been resolved in different functional states and in the presence of modulators, coupled with mutagenesis studies and electrophysiological characterisation. Here, we review the recent literature which has advanced our understanding of the complex mechanisms underlying modulation of TRPC3 by both endogenous and exogenous factors. TRPC3 plays an important role in Ca2+ homeostasis and entry into cells throughout the body, and both pathological variants and downstream dysregulation of TRPC3 channels have been associated with a number of diseases. As such, TRPC3 may be a valuable therapeutic target, and understanding its regulatory mechanisms will aid future development of pharmacological modulators of the channel.
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Affiliation(s)
- Bethan A. Cole
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU, UK
- Kavli Institute for Nanoscience Discovery, University of Oxford, Oxford OX1 3QU, UK
| | - Esther B. E. Becker
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU, UK
- Kavli Institute for Nanoscience Discovery, University of Oxford, Oxford OX1 3QU, UK
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3
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Ondřejíková L, Pařízek A, Šimják P, Vejražková D, Velíková M, Anderlová K, Vosátková M, Krejčí H, Koucký M, Kancheva R, Dušková M, Vaňková M, Bulant J, Hill M. Altered Steroidome in Women with Gestational Diabetes Mellitus: Focus on Neuroactive and Immunomodulatory Steroids from the 24th Week of Pregnancy to Labor. Biomolecules 2021; 11:biom11121746. [PMID: 34944390 PMCID: PMC8698588 DOI: 10.3390/biom11121746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/12/2021] [Accepted: 11/20/2021] [Indexed: 12/19/2022] Open
Abstract
Gestational diabetes mellitus (GDM) is a complication in pregnancy, but studies focused on the steroidome in patients with GDM are not available in the public domain. This article evaluates the steroidome in GDM+ and GDM- women and its changes from 24 weeks (± of gestation) to labor. The study included GDM+ (n = 44) and GDM- women (n = 33), in weeks 24-28, 30-36 of gestation and at labor and mixed umbilical blood after delivery. Steroidomic data (101 steroids quantified by GC-MS/MS) support the concept that the increasing diabetogenic effects with the approaching term are associated with mounting progesterone levels. The GDM+ group showed lower levels of testosterone (due to reduced AKR1C3 activity), estradiol (due to a shift from the HSD17B1 towards HSD17B2 activity), 7-oxygenated androgens (competing with cortisone for HSD11B1 and shifting the balance from diabetogenic cortisol towards the inactive cortisone), reduced activities of SRD5As, and CYP17A1 in the hydroxylase but higher CYP17A1 activity in the lyase step. With the approaching term, the authors found rising activities of CYP3A7, AKR1C1, CYP17A1 in its hydroxylase step, but a decline in its lyase step, rising conjugation of neuroinhibitory and pregnancy-stabilizing steroids and weakening AKR1D1 activity.
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Affiliation(s)
- Leona Ondřejíková
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
| | - Antonín Pařízek
- Department of Gynecology and Obstetrics, First Faculty of Medicine, General University Hospital in Prague, Charles University in Prague, 128 08 Prague, Czech Republic; (A.P.); (P.Š.); (K.A.); (H.K.); (M.K.)
| | - Patrik Šimják
- Department of Gynecology and Obstetrics, First Faculty of Medicine, General University Hospital in Prague, Charles University in Prague, 128 08 Prague, Czech Republic; (A.P.); (P.Š.); (K.A.); (H.K.); (M.K.)
| | - Daniela Vejražková
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
| | - Marta Velíková
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
| | - Kateřina Anderlová
- Department of Gynecology and Obstetrics, First Faculty of Medicine, General University Hospital in Prague, Charles University in Prague, 128 08 Prague, Czech Republic; (A.P.); (P.Š.); (K.A.); (H.K.); (M.K.)
| | - Michala Vosátková
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
| | - Hana Krejčí
- Department of Gynecology and Obstetrics, First Faculty of Medicine, General University Hospital in Prague, Charles University in Prague, 128 08 Prague, Czech Republic; (A.P.); (P.Š.); (K.A.); (H.K.); (M.K.)
| | - Michal Koucký
- Department of Gynecology and Obstetrics, First Faculty of Medicine, General University Hospital in Prague, Charles University in Prague, 128 08 Prague, Czech Republic; (A.P.); (P.Š.); (K.A.); (H.K.); (M.K.)
| | - Radmila Kancheva
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
| | - Michaela Dušková
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
| | - Markéta Vaňková
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
| | - Josef Bulant
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
| | - Martin Hill
- Institute of Endocrinology, 116 94 Prague, Czech Republic; (L.O.); (D.V.); (M.V.); (M.V.); (R.K.); (M.D.); (M.V.); (J.B.)
- Correspondence: ; Tel.: +420-224-905-246
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Hill M, Třískala Z, Honců P, Krejčí M, Kajzar J, Bičíková M, Ondřejíková L, Jandová D, Sterzl I. Aging, hormones and receptors. Physiol Res 2021; 69:S255-S272. [PMID: 33094624 DOI: 10.33549/physiolres.934523] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Ageing is accompanied by deterioration in physical condition and a number of physiological processes and thus a higher risk of a range of diseases and disorders. In particular, we focused on the changes associated with aging, especially the role of small molecules, their role in physiological and pathophysiological processes and potential treatment options. Our previously published results and data from other authors lead to the conclusion that these unwanted changes are mainly linked to the hypothalamic-pituitary-adrenal axis can be slowed down, stopped, or in some cases even reversed by an appropriate treatment, but especially by a life-management adjustment.
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Affiliation(s)
- M Hill
- Department of Steroids and Proteohormones, Institute of Endocrinology, Prague, Czech Republic.
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Singh R, Adhya P, Sharma SS. Redox-sensitive TRP channels: a promising pharmacological target in chemotherapy-induced peripheral neuropathy. Expert Opin Ther Targets 2021; 25:529-545. [PMID: 34289785 DOI: 10.1080/14728222.2021.1956464] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Chemotherapy-induced peripheral neuropathy (CIPN) and its related pain is a major side effect of certain chemotherapeutic agents used in cancer treatment. Available analgesics are mostly symptomatic, and on prolonged treatment, patients become refractive to them. Hence, the development of improved therapeutics that act on novel therapeutic targets is necessary. Potential targets include the redox-sensitive TRP channels [e.g. TRPA1, TRPC5, TRPC6, TRPM2, TRPM8, TRPV1, TRPV2, and TRPV4] which are activated under oxidative stress associated with CIPN. AREAS COVERED We have examined numerous neuropathy-inducing cancer chemotherapeutics and their pathophysiological mechanisms. Oxidative stress and its downstream targets, the redox-sensitive TRP channels, together with their potential pharmacological modulators, are discussed. Finally, we reflect upon the barriers to getting new therapeutic approaches into the clinic. The literature search was conducted in PubMed upto and including April 2021. EXPERT OPINION Redox-sensitive TRP channels are a promising target in CIPN. Pharmacological modulators of these channels have reduced pain in preclinical models and in clinical studies. Clinical scrutiny suggests that TRPA1, TRPM8, and TRPV1 are the most promising targets because of their pain-relieving potential. In addition to the analgesic effect, TRPV1 agonist-Capsaicin possesses a disease-modifying effect in CIPN through its restorative property in damaged sensory nerves.
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Affiliation(s)
- Ramandeep Singh
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Mohali, Punjab, India
| | - Pratik Adhya
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Mohali, Punjab, India
| | - Shyam Sunder Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Mohali, Punjab, India
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Björkgren I, Mendoza S, Chung DH, Haoui M, Petersen NT, Lishko PV. The epithelial potassium channel Kir7.1 is stimulated by progesterone. J Gen Physiol 2021; 153:212552. [PMID: 34387656 PMCID: PMC8374857 DOI: 10.1085/jgp.202112924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/29/2021] [Indexed: 11/20/2022] Open
Abstract
The choroid plexus (CP) epithelium secretes cerebrospinal fluid and plays an important role in healthy homeostasis of the brain. CP function can be influenced by sex steroid hormones; however, the precise molecular mechanism of such regulation is not well understood. Here, using whole-cell patch-clamp recordings from male and female murine CP cells, we show that application of progesterone resulted in specific and strong potentiation of the inwardly rectifying potassium channel Kir7.1, an essential protein that is expressed in CP and is required for survival. The potentiation was progesterone specific and independent of other known progesterone receptors expressed in CP. This effect was recapitulated with recombinant Kir7.1, as well as with endogenous Kir7.1 expressed in the retinal pigment epithelium. Current-clamp studies further showed a progesterone-induced hyperpolarization of CP cells. Our results provide evidence of a progesterone-driven control of tissues in which Kir7.1 is present.
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Affiliation(s)
- Ida Björkgren
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Sarah Mendoza
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Dong Hwa Chung
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Monika Haoui
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Natalie True Petersen
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Polina V Lishko
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
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7
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Sternberg AK, Buck VU, Classen-Linke I, Leube RE. How Mechanical Forces Change the Human Endometrium during the Menstrual Cycle in Preparation for Embryo Implantation. Cells 2021; 10:2008. [PMID: 34440776 PMCID: PMC8391722 DOI: 10.3390/cells10082008] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 12/12/2022] Open
Abstract
The human endometrium is characterized by exceptional plasticity, as evidenced by rapid growth and differentiation during the menstrual cycle and fast tissue remodeling during early pregnancy. Past work has rarely addressed the role of cellular mechanics in these processes. It is becoming increasingly clear that sensing and responding to mechanical forces are as significant for cell behavior as biochemical signaling. Here, we provide an overview of experimental evidence and concepts that illustrate how mechanical forces influence endometrial cell behavior during the hormone-driven menstrual cycle and prepare the endometrium for embryo implantation. Given the fundamental species differences during implantation, we restrict the review to the human situation. Novel technologies and devices such as 3D multifrequency magnetic resonance elastography, atomic force microscopy, organ-on-a-chip microfluidic systems, stem-cell-derived organoid formation, and complex 3D co-culture systems have propelled the understanding how endometrial receptivity and blastocyst implantation are regulated in the human uterus. Accumulating evidence has shown that junctional adhesion, cytoskeletal rearrangement, and extracellular matrix stiffness affect the local force balance that regulates endometrial differentiation and blastocyst invasion. A focus of this review is on the hormonal regulation of endometrial epithelial cell mechanics. We discuss potential implications for embryo implantation.
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Affiliation(s)
| | | | | | - Rudolf E. Leube
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany; (A.K.S.); (V.U.B.); (I.C.-L.)
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Rapid effects of neurosteroids on neuronal plasticity and their physiological and pathological implications. Neurosci Lett 2021; 750:135771. [PMID: 33636284 DOI: 10.1016/j.neulet.2021.135771] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/15/2021] [Accepted: 02/20/2021] [Indexed: 11/22/2022]
Abstract
Current neuroscience research on neurosteroids and their synthetic analogues - neuroactive steroids - clearly demonstrate their drug likeness in a variety of neurological and psychiatric conditions. Moreover, research on neurosteroids continues to provide novel mechanistic insights into receptor activation or inhibition of various receptors. This mini-review will provide a high-level overview of the research area and discuss the various classes of potential physiological and pathological implications discovered so far.
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9
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Horváth Á, Biró-Sütő T, Kántás B, Payrits M, Skoda-Földes R, Szánti-Pintér E, Helyes Z, Szőke É. Antinociceptive Effects of Lipid Raft Disruptors, a Novel Carboxamido-Steroid and Methyl β-Cyclodextrin, in Mice by Inhibiting Transient Receptor Potential Vanilloid 1 and Ankyrin 1 Channel Activation. Front Physiol 2020; 11:559109. [PMID: 33071817 PMCID: PMC7539994 DOI: 10.3389/fphys.2020.559109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/18/2020] [Indexed: 12/29/2022] Open
Abstract
Transient Receptor Potential Vanilloid 1 and Ankyrin 1 (TRPV1, TRPA1) cation channels are expressed in nociceptive primary sensory neurons, and play an integrative role in pain processing and inflammatory functions. Lipid rafts are liquid-ordered plasma membrane microdomains rich in cholesterol, sphingomyelin, and gangliosides. We earlier proved that lipid raft disintegration by cholesterol depletion using a novel carboxamido-steroid compound (C1) and methyl β-cyclodextrin (MCD) significantly and concentration-dependently inhibit TRPV1 and TRPA1 activation in primary sensory neurons and receptor-expressing cell lines. Here we investigated the effects of C1 compared to MCD in mouse pain models of different mechanisms. Both C1 and MCD significantly decreased the number of the TRPV1 activation (capsaicin)-induced nocifensive eye-wiping movements in the first hour by 45% and 32%, respectively, and C1 also in the second hour by 26%. Furthermore, C1 significantly decreased the TRPV1 stimulation (resiniferatoxin)-evoked mechanical hyperalgesia involving central sensitization processes, while its inhibitory effect on thermal allodynia was not statistically significant. In contrast, MCD did not affect these resiniferatoxin-evoked nocifensive responses. Both C1 and MCD had inhibitory action on TRPA1 activation (formalin)-induced acute nocifensive reactions (paw liftings, lickings, holdings, and shakings) in the second, neurogenic inflammatory phase by 36% and 51%, respectively. These are the first in vivo data showing that our novel lipid raft disruptor carboxamido-steroid compound exerts antinociceptive and antihyperalgesic effects by inhibiting TRPV1 and TRPA1 ion channel activation similarly to MCD, but in 150-fold lower concentrations. It is concluded that C1 is a useful experimental tool to investigate the effects of cholesterol depletion in animal models, and it also might open novel analgesic drug developmental perspectives.
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Affiliation(s)
- Ádám Horváth
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Tünde Biró-Sütő
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Boglárka Kántás
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Maja Payrits
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Rita Skoda-Földes
- Department of Organic Chemistry, Institute of Chemistry, University of Pannonia, Veszprém, Hungary
| | - Eszter Szánti-Pintér
- Department of Organic Chemistry, Institute of Chemistry, University of Pannonia, Veszprém, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Éva Szőke
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
- János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
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Negri S, Faris P, Pellavio G, Botta L, Orgiu M, Forcaia G, Sancini G, Laforenza U, Moccia F. Group 1 metabotropic glutamate receptors trigger glutamate-induced intracellular Ca 2+ signals and nitric oxide release in human brain microvascular endothelial cells. Cell Mol Life Sci 2020; 77:2235-2253. [PMID: 31473770 PMCID: PMC11104941 DOI: 10.1007/s00018-019-03284-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 08/02/2019] [Accepted: 08/16/2019] [Indexed: 12/20/2022]
Abstract
Neurovascular coupling (NVC) is the mechanism whereby an increase in neuronal activity causes an increase in local cerebral blood flow (CBF) to ensure local supply of oxygen and nutrients to the activated areas. The excitatory neurotransmitter glutamate gates post-synaptic N-methyl-D-aspartate receptors to mediate extracellular Ca2+ entry and stimulate neuronal nitric oxide (NO) synthase to release NO, thereby triggering NVC. Recent work suggested that endothelial Ca2+ signals could underpin NVC by recruiting the endothelial NO synthase. For instance, acetylcholine induced intracellular Ca2+ signals followed by NO release by activating muscarinic 5 receptors in hCMEC/D3 cells, a widely employed model of human brain microvascular endothelial cells. Herein, we sought to assess whether also glutamate elicits metabotropic Ca2+ signals and NO release in hCMEC/D3 cells. Glutamate induced a dose-dependent increase in intracellular Ca2+ concentration ([Ca2+]i) that was blocked by α-methyl-4-carboxyphenylglycine and phenocopied by trans-1-amino-1,3-cyclopentanedicarboxylic acid, which, respectively, block and activate group 1 metabotropic glutamate receptors (mGluRs). Accordingly, hCMEC/D3 expressed both mGluR1 and mGluR5 and the Ca2+ response to glutamate was inhibited by their pharmacological blockade with, respectively, CPCCOEt and MTEP hydrochloride. The Ca2+ response to glutamate was initiated by endogenous Ca2+ release from the endoplasmic reticulum and endolysosomal Ca2+ store through inositol-1,4,5-trisphosphate receptors and two-pore channels, respectively, and sustained by store-operated Ca2+ entry. In addition, glutamate induced robust NO release that was suppressed by pharmacological blockade of the accompanying increase in [Ca2+]i. These data demonstrate for the first time that glutamate may induce metabotropic Ca2+ signals in human brain microvascular endothelial cells. The Ca2+ response to glutamate is likely to support NVC during neuronal activity, thereby reinforcing the emerging role of brain microvascular endothelial cells in the regulation of CBF.
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Affiliation(s)
- Sharon Negri
- Laboratory of General Physiology, Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, Via Forlanini 6, 27100, Pavia, Italy
| | - Pawan Faris
- Laboratory of General Physiology, Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, Via Forlanini 6, 27100, Pavia, Italy
- Research Center, Salahaddin University, Erbil, Kurdistan-Region of Iraq, Iraq
| | - Giorgia Pellavio
- Human Physiology Unit, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Laura Botta
- Laboratory of General Physiology, Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, Via Forlanini 6, 27100, Pavia, Italy
| | - Matteo Orgiu
- Laboratory of General Physiology, Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, Via Forlanini 6, 27100, Pavia, Italy
| | - Greta Forcaia
- Department of Experimental Medicine, University of Milano-Bicocca, Monza, Italy
| | - Giulio Sancini
- Department of Experimental Medicine, University of Milano-Bicocca, Monza, Italy
| | - Umberto Laforenza
- Human Physiology Unit, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Francesco Moccia
- Laboratory of General Physiology, Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, Via Forlanini 6, 27100, Pavia, Italy.
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11
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Gkika D, Lolignier S, Grolez GP, Bavencoffe A, Shapovalov G, Gordienko D, Kondratskyi A, Meleine M, Prival L, Chapuy E, Etienne M, Eschalier A, Shuba Y, Skryma R, Busserolles J, Prevarskaya N. Testosterone-androgen receptor: The steroid link inhibiting TRPM8-mediated cold sensitivity. FASEB J 2020; 34:7483-7499. [PMID: 32277850 DOI: 10.1096/fj.201902270r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/10/2020] [Accepted: 03/18/2020] [Indexed: 11/11/2022]
Abstract
Recent studies have revealed gender differences in cold perception, and pointed to a possible direct action of testosterone (TST) on the cold-activated TRPM8 (Transient Receptor Potential Melastatin Member 8) channel. However, the mechanisms by which TST influences TRPM8-mediated sensory functions remain elusive. Here, we show that TST inhibits TRPM8-mediated mild-cold perception through the noncanonical engagement of the Androgen Receptor (AR). Castration of both male rats and mice increases sensitivity to mild cold, and this effect depends on the presence of intact TRPM8 and AR. TST in nanomolar concentrations suppresses whole-cell TRPM8-mediated currents and single-channel activity in native dorsal root ganglion (DRG) neurons and HEK293 cells co-expressing recombinant TRPM8 and AR, but not TRPM8 alone. AR cloned from rat DRGs shows no difference from standard AR. However, biochemical assays and confocal imaging reveal the presence of AR on the cell surface and its interaction with TRPM8 in response to TST, leading to an inhibition of channel activity.
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Affiliation(s)
- Dimitra Gkika
- Univ. Lille, Inserm, U1003 - PHYCEL - Physiologie Cellulaire, Lille, France
| | - Stéphane Lolignier
- Université Clermont Auvergne, Inserm, Neuro-Dol, Clermont-Ferrand, France.,Institut Analgesia, Faculté de Médecine, Clermont-Ferrand, France
| | - Guillaume P Grolez
- Univ. Lille, Inserm, U1003 - PHYCEL - Physiologie Cellulaire, Lille, France
| | - Alexis Bavencoffe
- Univ. Lille, Inserm, U1003 - PHYCEL - Physiologie Cellulaire, Lille, France
| | - Georges Shapovalov
- Univ. Lille, Inserm, U1003 - PHYCEL - Physiologie Cellulaire, Lille, France
| | - Dmitri Gordienko
- Univ. Lille, Inserm, U1003 - PHYCEL - Physiologie Cellulaire, Lille, France
| | - Artem Kondratskyi
- Univ. Lille, Inserm, U1003 - PHYCEL - Physiologie Cellulaire, Lille, France.,Department of Neuromuscular Physiology, Bogomoletz Institute of Physiology NASU, Kyiv, Ukraine
| | - Mathieu Meleine
- Université Clermont Auvergne, Inserm, Neuro-Dol, Clermont-Ferrand, France.,Institut Analgesia, Faculté de Médecine, Clermont-Ferrand, France
| | - Laetitia Prival
- Université Clermont Auvergne, Inserm, Neuro-Dol, Clermont-Ferrand, France.,Institut Analgesia, Faculté de Médecine, Clermont-Ferrand, France
| | - Eric Chapuy
- Université Clermont Auvergne, Inserm, Neuro-Dol, Clermont-Ferrand, France.,Institut Analgesia, Faculté de Médecine, Clermont-Ferrand, France
| | - Monique Etienne
- Université Clermont Auvergne, Inserm, Neuro-Dol, Clermont-Ferrand, France.,Institut Analgesia, Faculté de Médecine, Clermont-Ferrand, France
| | - Alain Eschalier
- Université Clermont Auvergne, Inserm, Neuro-Dol, Clermont-Ferrand, France.,Institut Analgesia, Faculté de Médecine, Clermont-Ferrand, France
| | - Yaroslav Shuba
- Univ. Lille, Inserm, U1003 - PHYCEL - Physiologie Cellulaire, Lille, France.,Department of Neuromuscular Physiology, Bogomoletz Institute of Physiology NASU, Kyiv, Ukraine
| | - Roman Skryma
- Univ. Lille, Inserm, U1003 - PHYCEL - Physiologie Cellulaire, Lille, France
| | - Jérôme Busserolles
- Université Clermont Auvergne, Inserm, Neuro-Dol, Clermont-Ferrand, France.,Institut Analgesia, Faculté de Médecine, Clermont-Ferrand, France
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12
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Sex hormone intake in female blood donors: impact on haemolysis during cold storage and regulation of erythrocyte calcium influx by progesterone. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2020; 17:263-273. [PMID: 31385799 DOI: 10.2450/2019.0053-19] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/17/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND Sex hormone intake in blood donors may affect the quality of red blood cell (RBC) products via modulation of RBC function and predisposition to haemolysis during cold storage. The aims of this study were to evaluate the association between female sex hormone intake and RBC storage outcomes, and to examine possible mechanisms by which sex hormones interact with RBCs. MATERIALS AND METHODS Sex hormone intake by race/ethnicity and menopausal status, and association analyses between hormone intake and donor scores of storage, osmotic or oxidative haemolysis, were evaluated in 6,636 female donors who participated in the National Heart, Lung and Blood Institute's RBC-Omics study. A calcium fluorophore, Fluo-3AM, was used to define RBC calcium influx in response to exogenous sex hormones or transient receptor potential cation (TRPC) channel drugs. RESULTS Sex hormone intake was more prevalent in premenopausal women from all racial groups (18-31%) than in postmenopausal women (4-8%). Hormone intake was significantly (p<0.0001) associated with reduced storage haemolysis in all females, reduced osmotic haemolysis in postmenopausal donors (23.1±10.2% vs 26.8±12.0% in controls, p<0.001), and enhanced susceptibility to oxidative haemolysis in premenopausal women. In vitro, supraphysiological levels of progesterone (10 μmol/L), but not 17β-oestradiol or testosterone, inhibited calcium influx into RBC and was associated with lower spontaneous haemolysis after 30 days of cold storage (0.95±0.18% vs 1.85±0.35% in controls, p<0.0001) or in response to a TRPC6 activator. CONCLUSIONS Sex hormone intake in female donors is associated with changes in RBC predisposition to haemolysis. Menstrual status and the type of hormone preparation may contribute to differences in haemolytic responses of female RBCs to osmotic and oxidative stress. Progesterone modulates calcium influx into RBC via a mechanism that may involve interactions with membrane TRPC6 channels.
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13
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Dattilo M, Penington NJ, Williams K. Regulation of TRPC5 currents by intracellular ATP: Single channel studies. J Cell Physiol 2020; 235:7056-7066. [PMID: 31994734 DOI: 10.1002/jcp.29602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 01/10/2020] [Indexed: 11/09/2022]
Abstract
TRPC5 channels are nonselective cation channels activated by G-protein-coupled receptors. It was previously found that recombinant TRPC5 currents are inhibited by intracellular ATP, when studied by whole-cell patch-clamp recording. In the present study, we investigated the mechanism of ATP inhibition at the single-channel level using patches from HEK-293 cells transiently transfected with TRPC5 and the M1 muscarinic receptor. In inside-out patches, application of ATP to the intracellular face of the membrane reduced TRPC5 channel activity at both positive and negative potentials without affecting the unitary current amplitude or open dwell time of the channel. The effect of ATP was rapidly reversible. These results suggest that ATP may bind to the channel protein and affect the ability of the channel to open or to remain in an open, nondesensitized state. The activity of TRPC5 channels may be influenced by cellular metabolism via changes in ATP levels.
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Affiliation(s)
- Michael Dattilo
- Department of Physiology and Pharmacology, State University of New York, Downstate Health Sciences University, Brooklyn, New York.,Program in Neural and Behavioral Science and Robert F. Furchgott, Center for Neural and Behavioral Science, State University of New York, Downstate Health Sciences University, Brooklyn, New York
| | - Nicholas J Penington
- Department of Physiology and Pharmacology, State University of New York, Downstate Health Sciences University, Brooklyn, New York.,Program in Neural and Behavioral Science and Robert F. Furchgott, Center for Neural and Behavioral Science, State University of New York, Downstate Health Sciences University, Brooklyn, New York
| | - Keith Williams
- Department of Physiology and Pharmacology, State University of New York, Downstate Health Sciences University, Brooklyn, New York.,Program in Neural and Behavioral Science and Robert F. Furchgott, Center for Neural and Behavioral Science, State University of New York, Downstate Health Sciences University, Brooklyn, New York
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14
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Lee AG. Interfacial Binding Sites for Cholesterol on TRP Ion Channels. Biophys J 2019; 117:2020-2033. [PMID: 31672270 DOI: 10.1016/j.bpj.2019.10.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/11/2019] [Accepted: 10/15/2019] [Indexed: 12/24/2022] Open
Abstract
Transient receptor potential (TRP) channels are members of a large family of ion channels located in membranes rich in cholesterol, some of whose functions are affected by the cholesterol content of the membrane. Here, cholesterol binding to TRPs is studied using a docking procedure that allows the transmembrane surface of a TRP to be swept rapidly for potential binding sites at the interfaces on the two sides of the membrane. Cholesterol docking poses determined in this way match 89% of the cholesterol hemisuccinate molecules in published TRP structures when cholesterol hemisuccinate molecules unlikely to represent typical bound cholesterols are excluded. TRPs are tetrameric, with large clefts at the interfaces between subunits; cholesterol poses are located in hollows, largely within these clefts. Comparison of cholesterol poses with phospholipid binding sites suggests that binding of cholesterol to a TRP need not result in displacement of phospholipid molecules from the TRP surface.
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Affiliation(s)
- Anthony G Lee
- School of Biological Sciences, University of Southampton, Southampton, United Kingdom.
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15
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Honců P, Hill M, Bičíková M, Jandová D, Velíková M, Kajzar J, Kolátorová L, Bešťák J, Máčová L, Kancheva R, Krejčí M, Novotný J, Stárka Ľ. Activation of Adrenal Steroidogenesis and an Improvement of Mood Balance in Postmenopausal Females after Spa Treatment Based on Physical Activity. Int J Mol Sci 2019; 20:ijms20153687. [PMID: 31357645 PMCID: PMC6695846 DOI: 10.3390/ijms20153687] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/12/2019] [Accepted: 07/26/2019] [Indexed: 12/16/2022] Open
Abstract
Spa treatment can effectively reestablish mood balance in patients with psychiatric disorders. In light of the adrenal gland’s role as a crossroad of psychosomatic medicine, this study evaluated changes in 88 circulating steroids and their relationships with a consolidation of somatic, psychosomatic and psychiatric components from a modified N-5 neurotic questionnaire in 46 postmenopausal 50+ women with anxiety-depressive complaints. The patients underwent a standardized one-month intervention therapy with physical activity and an optimized daily regimen in a spa in the Czech Republic. All participants were on medication with selective serotonin reuptake inhibitors. An increase of adrenal steroidogenesis after intervention indicated a reinstatement of the hypothalamic-pituitary-adrenal axis. The increases of many of these steroids were likely beneficial to patients, including immunoprotective adrenal androgens and their metabolites, neuroactive steroids that stimulate mental activity but protect from excitotoxicity, steroids that suppress pain perception and fear, steroids that consolidate insulin secretion, and steroids that improve xenobiotic clearance. The positive associations between the initial values of neurotic symptoms and their declines after the intervention, as well as between initial adrenal activity and the decline of neurotic symptoms, indicate that neurotic impairment may be alleviated by such therapy provided that the initial adrenal activity is not seriously disrupted.
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Affiliation(s)
- Pavla Honců
- Department of Rehabilitation Medicine, 3rd Faculty of Medicine, Charles University, 12808 Prague, Czech Republic
| | - Martin Hill
- Institute of Endocrinology, 11694 Prague, Czech Republic.
| | - Marie Bičíková
- Institute of Endocrinology, 11694 Prague, Czech Republic
| | - Dobroslava Jandová
- College of Physical Education and Sport Palestra, 19700 Prague, Czech Republic
| | - Marta Velíková
- Institute of Endocrinology, 11694 Prague, Czech Republic
| | - Jiří Kajzar
- College of Physical Education and Sport Palestra, 19700 Prague, Czech Republic
| | | | - Jiří Bešťák
- Institute of Endocrinology, 11694 Prague, Czech Republic
| | - Ludmila Máčová
- Institute of Endocrinology, 11694 Prague, Czech Republic
| | | | - Milada Krejčí
- College of Physical Education and Sport Palestra, 19700 Prague, Czech Republic
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16
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Ma W, Chen X, Cerne R, Syed SK, Ficorilli JV, Cabrera O, Obukhov AG, Efanov AM. Catechol estrogens stimulate insulin secretion in pancreatic β-cells via activation of the transient receptor potential A1 (TRPA1) channel. J Biol Chem 2018; 294:2935-2946. [PMID: 30587572 DOI: 10.1074/jbc.ra118.005504] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 12/10/2018] [Indexed: 12/22/2022] Open
Abstract
Estrogen hormones play an important role in controlling glucose homeostasis and pancreatic β-cell function. Despite the significance of estrogen hormones for regulation of glucose metabolism, little is known about the roles of endogenous estrogen metabolites in modulating pancreatic β-cell function. In this study, we evaluated the effects of major natural estrogen metabolites, catechol estrogens, on insulin secretion in pancreatic β-cells. We show that catechol estrogens, hydroxylated at positions C2 and C4 of the steroid A ring, rapidly potentiated glucose-induced insulin secretion via a nongenomic mechanism. 2-Hydroxyestrone, the most abundant endogenous estrogen metabolite, was more efficacious in stimulating insulin secretion than any other tested catechol estrogens. In insulin-secreting cells, catechol estrogens produced rapid activation of calcium influx and elevation in cytosolic free calcium. Catechol estrogens also generated sustained elevations in cytosolic free calcium and evoked inward ion current in HEK293 cells expressing the transient receptor potential A1 (TRPA1) cation channel. Calcium influx and insulin secretion stimulated by estrogen metabolites were dependent on the TRPA1 activity and inhibited with the channel-specific pharmacological antagonists or the siRNA. Our results suggest the role of estrogen metabolism in a direct regulation of TRPA1 activity with potential implications for metabolic diseases.
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Affiliation(s)
- Wenzhen Ma
- From the Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285 and
| | - Xingjuan Chen
- the Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Rok Cerne
- From the Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285 and
| | - Samreen K Syed
- From the Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285 and
| | - James V Ficorilli
- From the Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285 and
| | - Over Cabrera
- From the Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285 and
| | - Alexander G Obukhov
- the Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Alexander M Efanov
- From the Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285 and
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17
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Artero-Morales M, González-Rodríguez S, Ferrer-Montiel A. TRP Channels as Potential Targets for Sex-Related Differences in Migraine Pain. Front Mol Biosci 2018; 5:73. [PMID: 30155469 PMCID: PMC6102492 DOI: 10.3389/fmolb.2018.00073] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 07/10/2018] [Indexed: 12/31/2022] Open
Abstract
Chronic pain is one of the most debilitating human diseases and represents a social and economic burden for our society. Great efforts are being made to understand the molecular and cellular mechanisms underlying the pathophysiology of pain transduction. It is particularly noteworthy that some types of chronic pain, such as migraine, display a remarkable sex dimorphism, being up to three times more prevalent in women than in men. This gender prevalence in migraine appears to be related to sex differences arising from both gonadal and genetic factors. Indeed, the functionality of the somatosensory, immune, and endothelial systems seems modulated by sex hormones, as well as by X-linked genes differentially expressed during development. Here, we review the current data on the modulation of the somatosensory system functionality by gonadal hormones. Although this is still an area that requires intense investigation, there is evidence suggesting a direct regulation of nociceptor activity by sex hormones at the transcriptional, translational, and functional levels. Data are being accumulated on the effect of sex hormones on TRP channels such as TRPV1 that make pivotal contributions to nociceptor excitability and sensitization in migraine and other chronic pain syndromes. These data suggest that modulation of TRP channels' expression and/or activity by gonadal hormones provide novel pathways for drug intervention that may be useful for targeting the sex dimorphism observed in migraine.
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Affiliation(s)
- Maite Artero-Morales
- Instituto de Biología Molecular y Celular, Universitas Miguel Hernández, Elche, Spain
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18
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Sághy É, Payrits M, Bíró-Sütő T, Skoda-Földes R, Szánti-Pintér E, Erostyák J, Makkai G, Sétáló G, Kollár L, Kőszegi T, Csepregi R, Szolcsányi J, Helyes Z, Szőke É. Carboxamido steroids inhibit the opening properties of transient receptor potential ion channels by lipid raft modulation. J Lipid Res 2018; 59:1851-1863. [PMID: 30093524 PMCID: PMC6168298 DOI: 10.1194/jlr.m084723] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 08/03/2018] [Indexed: 11/20/2022] Open
Abstract
Transient Receptor Potential (TRP) cation channels, like the TRP Vanilloid 1 (TRPV1) and TRP Ankyrin 1 (TRPA1), are expressed on primary sensory neurons. These thermosensor channels play a role in pain processing. We have provided evidence previously that lipid raft disruption influenced the TRP channel activation, and a carboxamido-steroid compound (C1) inhibited TRPV1 activation. Therefore, our aim was to investigate whether this compound exerts its effect through lipid raft disruption and the steroid backbone (C3) or whether altered position of the carboxamido group (C2) influences the inhibitory action by measuring Ca2+ transients on isolated neurons and calcium-uptake on receptor-expressing CHO cells. Membrane cholesterol content was measured by filipin staining and membrane polarization by fluorescence spectroscopy. Both the percentage of responsive cells and the magnitude of the intracellular Ca2+ enhancement evoked by the TRPV1 agonist capsaicin were significantly inhibited after C1 and C2 incubation, but not after C3 administration. C1 was able to reduce other TRP channel activation as well. The compounds induced cholesterol depletion in CHO cells, but only C1 induced changes in membrane polarization. The inhibitory action of the compounds on TRP channel activation develops by lipid raft disruption, and the presence and the position of the carboxamido group is essential.
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Affiliation(s)
- Éva Sághy
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Maja Payrits
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary
| | - Tünde Bíró-Sütő
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary
| | - Rita Skoda-Földes
- Department of Organic Chemistry, Institute of Chemistry, University of Pannonia, Veszprém, Hungary
| | - Eszter Szánti-Pintér
- Department of Organic Chemistry, Institute of Chemistry, University of Pannonia, Veszprém, Hungary
| | - János Erostyák
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Experimental Physics, University of Pécs, Hungary
| | - Géza Makkai
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Experimental Physics, University of Pécs, Hungary
| | - György Sétáló
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Medical Biology, University of Pécs, Hungary
| | - László Kollár
- Department of Inorganic Chemistry and MTA-PTE Research Group for Selective Chemical Syntheses, University of Pécs, Hungary
| | - Tamás Kőszegi
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Laboratory Medicine, University of Pécs, Hungary
| | - Rita Csepregi
- Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,Department of Laboratory Medicine, University of Pécs, Hungary
| | - János Szolcsányi
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary.,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,National Brain Research Program-2 Chronic Pain Research Group, Pécs, Hungary
| | - Éva Szőke
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Hungary .,Medical School, János Szentágothai Research Center and Centre for Neuroscience, University of Pécs, Hungary.,National Brain Research Program-2 Chronic Pain Research Group, Pécs, Hungary
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19
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Endothelial Ca 2+ Signaling and the Resistance to Anticancer Treatments: Partners in Crime. Int J Mol Sci 2018; 19:ijms19010217. [PMID: 29324706 PMCID: PMC5796166 DOI: 10.3390/ijms19010217] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 01/08/2018] [Accepted: 01/10/2018] [Indexed: 02/06/2023] Open
Abstract
Intracellular Ca2+ signaling drives angiogenesis and vasculogenesis by stimulating proliferation, migration, and tube formation in both vascular endothelial cells and endothelial colony forming cells (ECFCs), which represent the only endothelial precursor truly belonging to the endothelial phenotype. In addition, local Ca2+ signals at the endoplasmic reticulum (ER)-mitochondria interface regulate endothelial cell fate by stimulating survival or apoptosis depending on the extent of the mitochondrial Ca2+ increase. The present article aims at describing how remodeling of the endothelial Ca2+ toolkit contributes to establish intrinsic or acquired resistance to standard anti-cancer therapies. The endothelial Ca2+ toolkit undergoes a major alteration in tumor endothelial cells and tumor-associated ECFCs. These include changes in TRPV4 expression and increase in the expression of P2X7 receptors, Piezo2, Stim1, Orai1, TRPC1, TRPC5, Connexin 40 and dysregulation of the ER Ca2+ handling machinery. Additionally, remodeling of the endothelial Ca2+ toolkit could involve nicotinic acetylcholine receptors, gasotransmitters-gated channels, two-pore channels and Na⁺/H⁺ exchanger. Targeting the endothelial Ca2+ toolkit could represent an alternative adjuvant therapy to circumvent patients' resistance to current anti-cancer treatments.
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20
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Rebas E, Radzik T, Boczek T, Zylinska L. Calcium-engaged Mechanisms of Nongenomic Action of Neurosteroids. Curr Neuropharmacol 2017; 15:1174-1191. [PMID: 28356049 PMCID: PMC5725547 DOI: 10.2174/1570159x15666170329091935] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 01/01/1970] [Accepted: 03/25/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Neurosteroids form the unique group because of their dual mechanism of action. Classically, they bind to specific intracellular and/or nuclear receptors, and next modify genes transcription. Another mode of action is linked with the rapid effects induced at the plasma membrane level within seconds or milliseconds. The key molecules in neurotransmission are calcium ions, thereby we focus on the recent advances in understanding of complex signaling crosstalk between action of neurosteroids and calcium-engaged events. METHODS Short-time effects of neurosteroids action have been reviewed for GABAA receptor complex, glycine receptor, NMDA receptor, AMPA receptor, G protein-coupled receptors and sigma-1 receptor, as well as for several membrane ion channels and plasma membrane enzymes, based on available published research. RESULTS The physiological relevance of neurosteroids results from the fact that they can be synthesized and accumulated in the central nervous system, independently from peripheral sources. Fast action of neurosteroids is a prerequisite for genomic effects and these early events can significantly modify intracellular downstream signaling pathways. Since they may exert either positive or negative effects on calcium homeostasis, their role in monitoring of spatio-temporal Ca2+ dynamics, and subsequently, Ca2+-dependent physiological processes or initiation of pathological events, is evident. CONCLUSION Neurosteroids and calcium appear to be the integrated elements of signaling systems in neuronal cells under physiological and pathological conditions. A better understanding of cellular and molecular mechanisms of nongenomic, calcium-engaged neurosteroids action could open new ways for therapeutic interventions aimed to restore neuronal function in many neurological and psychiatric diseases.
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Affiliation(s)
- Elzbieta Rebas
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Poland
| | - Tomasz Radzik
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Poland
| | - Tomasz Boczek
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Poland
- Boston Children’s Hospital and Harvard Medical School, Boston, USA
| | - Ludmila Zylinska
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Poland
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21
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Beckmann H, Richter J, Hill K, Urban N, Lemoine H, Schaefer M. A benzothiadiazine derivative and methylprednisolone are novel and selective activators of transient receptor potential canonical 5 (TRPC5) channels. Cell Calcium 2017; 66:10-18. [PMID: 28807145 DOI: 10.1016/j.ceca.2017.05.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 05/19/2017] [Accepted: 05/19/2017] [Indexed: 01/11/2023]
Abstract
The transient receptor potential canonical channel 5 (TRPC5) is a Ca2+-permeable ion channel, which is predominantly expressed in the brain. TRPC5-deficient mice exhibit a reduced innate fear response and impaired motor control. In addition, outgrowth of hippocampal and cerebellar neurons is retarded by TRPC5. However, pharmacological evidence of TRPC5 function on cellular or organismic levels is sparse. Thus, there is still a need for identifying novel and efficient TRPC5 channel modulators. We, therefore, screened compound libraries and identified the glucocorticoid methylprednisolone and N-[3-(adamantan-2-yloxy)propyl]-3-(6-methyl-1,1-dioxo-2H-1λ6,2,4-benzothiadiazin-3-yl)propanamide (BTD) as novel TRPC5 activators. Comparisons with closely related chemical structures from the same libraries indicate important substructures for compound efficacy. Methylprednisolone activates TRPC5 heterologously expressed in HEK293 cells with an EC50 of 12μM, while BTD-induced half-maximal activation is achieved with 5-fold lower concentrations, both in Ca2+ assays (EC50=1.4μM) and in electrophysiological whole cell patch clamp recordings (EC50=1.3 μM). The activation resulting from both compounds is long lasting, reversible and sensitive to clemizole, a recently established TRPC5 inhibitor. No influence of BTD on homotetrameric members of the remaining TRPC family was observed. On the main sensory TRP channels (TRPA1, TRPV1, TRPM3, TRPM8) BTD exerts only minor activity. Furthermore, BTD can activate heteromeric channel complexes consisting of TRPC5 and its closest relatives TRPC1 or TRPC4, suggesting a high selectivity of BTD for channel complexes bearing at least one TRPC5 subunit.
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Affiliation(s)
- Holger Beckmann
- Rudolf-Boehm-Institute of Pharmacology and Toxicology, Leipzig University, Härtelstraße 16-18, 04107 Leipzig, Germany.
| | - Julia Richter
- Rudolf-Boehm-Institute of Pharmacology and Toxicology, Leipzig University, Härtelstraße 16-18, 04107 Leipzig, Germany
| | - Kerstin Hill
- Rudolf-Boehm-Institute of Pharmacology and Toxicology, Leipzig University, Härtelstraße 16-18, 04107 Leipzig, Germany.
| | - Nicole Urban
- Rudolf-Boehm-Institute of Pharmacology and Toxicology, Leipzig University, Härtelstraße 16-18, 04107 Leipzig, Germany.
| | - Horst Lemoine
- Institute for Lasermedicine, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany.
| | - Michael Schaefer
- Rudolf-Boehm-Institute of Pharmacology and Toxicology, Leipzig University, Härtelstraße 16-18, 04107 Leipzig, Germany.
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22
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Abstract
Glioma is the most common type of brain tumors and malignant glioma is extremely lethal, with patients' 5-year survival rate less than 10%. Treatment of gliomas poses remarkable clinical challenges, not only because of their particular localization but also because glioma cells possess several malignant biological features, including highly proliferative, highly invasive, highly angiogenic, and highly metabolic aberrant. All these features make gliomas highly recurrent and drug resistant. Finding new and effective molecular drug targets for glioma is an urgent and critical task for both basic and clinical research. Recent studies have proposed a type of non-voltage-gated calcium channels, namely, canonical transient receptor potential (TRPC) channels, to be newly emerged potential drug targets for glioma. They are heavily involved in the proliferation, migration, invasion, angiogenesis, and metabolism of glioma cells. Abundant evidence from both cell models and preclinical mouse models has demonstrated that inhibition of TRPC channels shows promising anti-glioma effect. In this chapter, we will give a comprehensive review on the current progress in the studies on TRPC channels and glioma and discuss their potential clinical implication in glioma therapy.
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Affiliation(s)
- Shanshan Li
- Department of Molecular and Cellular Biology, Baylor College of Medicine, 1 Baylor Plaza, Houston, 77030, TX, USA.
| | - Xia Ding
- Mouse Cancer Genetics Program, National Cancer Institute, NIH, Frederick, MD, 21702, USA.
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23
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Svobodova B, Groschner K. Reprint of "Mechanisms of lipid regulation and lipid gating in TRPC channels". Cell Calcium 2016; 60:133-41. [PMID: 27431463 DOI: 10.1016/j.ceca.2016.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/24/2016] [Accepted: 03/25/2016] [Indexed: 01/04/2023]
Abstract
TRPC proteins form cation channels that integrate and relay cellular signals by mechanisms involving lipid recognition and lipid-dependent gating. The lipohilic/amphiphilic molecules that function as cellular activators or modulators of TRPC proteins span a wide range of chemical structures. In this context, cellular redox balance is likely linked to the lipid recognition/gating features of TRPC channels. Both classical ligand-protein interactions as well as indirect and promiscuous sensory mechanisms have been proposed. Some of the recognition processes are suggested to involve ancillary lipid-binding scaffolds or regulators as well as dynamic protein-protein interactions determined by bilayer architecture. A complex interplay of protein-protein and protein-lipid interactions is likely to govern the gating and/or plasma membrane recruitment of TRPC channels, thereby providing a distinguished platform for signal integration and coincident signal detection. Both the primary molecular event(s) of lipid recognition by TRPC channels as well as the transformation of these events into distinct gating movements is poorly understood at the molecular level, and it remains elusive whether lipid sensing in TRPCs is conferred to a distinct sensor domain. Recent structural information on the molecular action of lipophilic activators in distantly related members of the TRP superfamily encourages speculations on TRPC gating mechanisms involved in lipid recognition/gating. This review aims to provide an update on the current understanding of the lipid-dependent control of TRPC channels with focus on the TRPC lipid sensing, signal-integration hub and a short discussion of potential links to redox signaling.
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Affiliation(s)
- Barbora Svobodova
- Institute of Biophysics, Medical University of Graz, A-8010 Graz, Austria
| | - Klaus Groschner
- Institute of Biophysics, Medical University of Graz, A-8010 Graz, Austria.
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24
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Mechanisms of lipid regulation and lipid gating in TRPC channels. Cell Calcium 2016; 59:271-9. [PMID: 27125985 DOI: 10.1016/j.ceca.2016.03.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/24/2016] [Accepted: 03/25/2016] [Indexed: 12/15/2022]
Abstract
TRPC proteins form cation channels that integrate and relay cellular signals by mechanisms involving lipid recognition and lipid-dependent gating. The lipohilic/amphiphilic molecules that function as cellular activators or modulators of TRPC proteins span a wide range of chemical structures. In this context, cellular redox balance is likely linked to the lipid recognition/gating features of TRPC channels. Both classical ligand-protein interactions as well as indirect and promiscuous sensory mechanisms have been proposed. Some of the recognition processes are suggested to involve ancillary lipid-binding scaffolds or regulators as well as dynamic protein-protein interactions determined by bilayer architecture. A complex interplay of protein-protein and protein-lipid interactions is likely to govern the gating and/or plasma membrane recruitment of TRPC channels, thereby providing a distinguished platform for signal integration and coincident signal detection. Both the primary molecular event(s) of lipid recognition by TRPC channels as well as the transformation of these events into distinct gating movements is poorly understood at the molecular level, and it remains elusive whether lipid sensing in TRPCs is conferred to a distinct sensor domain. Recent structural information on the molecular action of lipophilic activators in distantly related members of the TRP superfamily encourages speculations on TRPC gating mechanisms involved in lipid recognition/gating. This review aims to provide an update on the current understanding of the lipid-dependent control of TRPC channels with focus on the TRPC lipid sensing, signal-integration hub and a short discussion of potential links to redox signaling.
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25
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Elbaz M, Ahirwar D, Xiaoli Z, Zhou X, Lustberg M, Nasser MW, Shilo K, Ganju RK. TRPV2 is a novel biomarker and therapeutic target in triple negative breast cancer. Oncotarget 2016; 9:33459-33470. [PMID: 30323891 DOI: 10.18632/oncotarget.9663] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 04/27/2016] [Indexed: 12/31/2022] Open
Abstract
Transient receptor potential vanilloid type-2 (TRPV2) is an ion channel that is triggered by agonists like cannabidiol (CBD). Triple negative breast cancer (TNBC) is an aggressive disease with limited therapeutic options. Chemotherapy is still the first line for the treatment of TNBC patients; however, TNBC usually gains rapid resistance and unresponsiveness to chemotherapeutic drugs. In this study, we found that TRPV2 protein is highly up-regulated in TNBC tissues compared to normal breast tissues. We also observed that TNBC and estrogen receptor alpha negative (ERβ-) patients with higher TRPV2 expression have significantly higher recurrence free survival compared to patients with lower TRPV2 expression especially those who were treated with chemotherapy. In addition, we showed that TRPV2 overexpression or activation by CBD significantly increased doxorubicin (DOX) uptake and apoptosis in TNBC cells. The induction of DOX uptake was abrogated by TRPV2 blocking or downregulation. In vivo mouse model studies showed that the TNBC tumors derived from CBD+DOX treated mice have significantly reduced weight and increased apoptosis compared to those treated with CBD or DOX alone. Overall, our studies for the first time revealed that TRPV2 might be a good prognostic marker for TNBC and ERβ- breast cancer patient especially for those who are treated with chemotherapy. In addition, TRPV2 activation could be a novel therapeutic strategy to enhance the uptake and efficacy of chemotherapy in TNBC patients.
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Affiliation(s)
- Mohamad Elbaz
- Department of Pathology, Wexner Medical Center, Ohio State University (OSU), Columbus, OH, USA.,The Comprehensive Cancer Center, Ohio State University (OSU), Wexner Medical Center, Columbus, OH, USA.,Department of Pharmacology, Pharmacy School, Helwan University, Helwan, Egypt
| | - Dinesh Ahirwar
- Department of Pathology, Wexner Medical Center, Ohio State University (OSU), Columbus, OH, USA.,The Comprehensive Cancer Center, Ohio State University (OSU), Wexner Medical Center, Columbus, OH, USA
| | - Zhang Xiaoli
- Center for Biostatistics, Ohio State University (OSU), Columbus, OH, USA
| | - Xinyu Zhou
- Department of surgery, Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, USA
| | - Maryam Lustberg
- Department of Internal Medicine, Ohio State University (OSU), Columbus, OH, USA
| | - Mohd W Nasser
- Department of Pathology, Wexner Medical Center, Ohio State University (OSU), Columbus, OH, USA.,The Comprehensive Cancer Center, Ohio State University (OSU), Wexner Medical Center, Columbus, OH, USA
| | - Konstantin Shilo
- Department of Pathology, Wexner Medical Center, Ohio State University (OSU), Columbus, OH, USA.,The Comprehensive Cancer Center, Ohio State University (OSU), Wexner Medical Center, Columbus, OH, USA
| | - Ramesh K Ganju
- Department of Pathology, Wexner Medical Center, Ohio State University (OSU), Columbus, OH, USA.,The Comprehensive Cancer Center, Ohio State University (OSU), Wexner Medical Center, Columbus, OH, USA
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26
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Kumar A, Kumari S, Majhi RK, Swain N, Yadav M, Goswami C. Regulation of TRP channels by steroids: Implications in physiology and diseases. Gen Comp Endocrinol 2015; 220:23-32. [PMID: 25449179 DOI: 10.1016/j.ygcen.2014.10.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 10/09/2014] [Accepted: 10/10/2014] [Indexed: 01/26/2023]
Abstract
While effects of different steroids on the gene expression and regulation are well established, it is proven that steroids can also exert rapid non-genomic actions in several tissues and cells. In most cases, these non-genomic rapid effects of steroids are actually due to intracellular mobilization of Ca(2+)- and other ions suggesting that Ca(2+) channels are involved in such effects. Transient Receptor Potential (TRP) ion channels or TRPs are the largest group of non-selective and polymodal ion channels which cause Ca(2+)-influx in response to different physical and chemical stimuli. While non-genomic actions of different steroids on different ion channels have been established to some extent, involvement of TRPs in such functions is largely unexplored. In this review, we critically analyze the literature and summarize how different steroids as well as their metabolic precursors and derivatives can exert non-genomic effects by acting on different TRPs qualitatively and/or quantitatively. Such effects have physiological repercussion on systems such as in sperm cells, immune cells, bone cells, neuronal cells and many others. Different TRPs are also endogenously expressed in diverse steroid-producing tissues and thus may have importance in steroid synthesis as well, a process which is tightly controlled by the intracellular Ca(2+) concentrations. Tissue and cell-specific expression of TRP channels are also regulated by different steroids. Understanding of the crosstalk between TRP channels and different steroids may have strong significance in physiological, endocrinological and pharmacological context and in future these compounds can also be used as potential biomedicine.
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Affiliation(s)
- Ashutosh Kumar
- School of Biology, National Institute of Science Education and Research, Sachivalaya Marg, Bhubaneswar, Orissa 751005, India
| | - Shikha Kumari
- School of Biology, National Institute of Science Education and Research, Sachivalaya Marg, Bhubaneswar, Orissa 751005, India
| | - Rakesh Kumar Majhi
- School of Biology, National Institute of Science Education and Research, Sachivalaya Marg, Bhubaneswar, Orissa 751005, India
| | - Nirlipta Swain
- School of Biology, National Institute of Science Education and Research, Sachivalaya Marg, Bhubaneswar, Orissa 751005, India
| | - Manoj Yadav
- School of Biology, National Institute of Science Education and Research, Sachivalaya Marg, Bhubaneswar, Orissa 751005, India
| | - Chandan Goswami
- School of Biology, National Institute of Science Education and Research, Sachivalaya Marg, Bhubaneswar, Orissa 751005, India.
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27
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Zhu Y, Lu Y, Qu C, Miller M, Tian J, Thakur DP, Zhu J, Deng Z, Hu X, Wu M, McManus OB, Li M, Hong X, Zhu MX, Luo HR. Identification and optimization of 2-aminobenzimidazole derivatives as novel inhibitors of TRPC4 and TRPC5 channels. Br J Pharmacol 2015; 172:3495-509. [PMID: 25816897 DOI: 10.1111/bph.13140] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 02/16/2015] [Accepted: 03/18/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND PURPOSE Transient receptor potential canonical (TRPC) channels play important roles in a broad array of physiological functions and are involved in various diseases. However, due to a lack of potent subtype-specific inhibitors the exact roles of TRPC channels in physiological and pathophysiological conditions have not been elucidated. EXPERIMENTAL APPROACH Using fluorescence membrane potential and Ca(2+) assays and electrophysiological recordings, we characterized new 2-aminobenzimidazole-based small molecule inhibitors of TRPC4 and TRPC5 channels identified from cell-based fluorescence high-throughput screening. KEY RESULTS The original compound, M084, was a potent inhibitor of both TRPC4 and TRPC5, but was also a weak inhibitor of TRPC3. Structural modifications of the lead compound resulted in the identification of analogues with improved potency and selectivity for TRPC4 and TRPC5 channels. The aminobenzimidazole derivatives rapidly inhibited the TRPC4- and TRPC5-mediated currents when applied from the extracellular side and this inhibition was independent of the mode of activation of these channels. The compounds effectively blocked the plateau potential mediated by TRPC4-containing channels in mouse lateral septal neurons, but did not affect the activity of heterologously expressed TRPA1, TRPM8, TRPV1 or TRPV3 channels or that of the native voltage-gated Na(+) , K(+) and Ca(2) (+) channels in dissociated neurons. CONCLUSIONS AND IMPLICATIONS The TRPC4/C5-selective inhibitors developed here represent novel and useful pharmaceutical tools for investigation of physiological and pathophysiological functions of TRPC4/C5 channels.
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Affiliation(s)
- Yingmin Zhu
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Yungang Lu
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, TX, USA.,The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Chunrong Qu
- State Key Laboratory of Virology, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Wuhan University), Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, Hubei, China
| | - Melissa Miller
- Department of Neuroscience, High Throughput Biology Center and Johns Hopkins Ion Channel Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jinbin Tian
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Dhananjay P Thakur
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Jinmei Zhu
- State Key Laboratory of Virology, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Wuhan University), Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, Hubei, China
| | - Zixin Deng
- State Key Laboratory of Virology, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Wuhan University), Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, Hubei, China
| | - Xianming Hu
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Meng Wu
- Department of Neuroscience, High Throughput Biology Center and Johns Hopkins Ion Channel Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Owen B McManus
- Department of Neuroscience, High Throughput Biology Center and Johns Hopkins Ion Channel Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Min Li
- Department of Neuroscience, High Throughput Biology Center and Johns Hopkins Ion Channel Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Xuechuan Hong
- State Key Laboratory of Virology, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Wuhan University), Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, Hubei, China
| | - Michael X Zhu
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Huai-Rong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, Yunnan, China
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28
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De Clercq K, Held K, Van Bree R, Meuleman C, Peeraer K, Tomassetti C, Voets T, D'Hooghe T, Vriens J. Functional expression of transient receptor potential channels in human endometrial stromal cells during the luteal phase of the menstrual cycle. Hum Reprod 2015; 30:1421-36. [PMID: 25820697 DOI: 10.1093/humrep/dev068] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 03/05/2015] [Indexed: 12/21/2022] Open
Abstract
STUDY QUESTION Are members of the transient receptor potential (TRP) channel superfamily functionally expressed in the human endometrial stroma? SUMMARY ANSWER The Ca(2+)-permeable ion channels TRPV2, TRPV4, TRPC6 and TRPM7 are functionally expressed in primary endometrial stromal cells. WHAT IS KNOWN ALREADY Intercellular communication between epithelial and stromal endometrial cells is required to initiate decidualization, a prerequisite for successful implantation. TRP channels are possible candidates as signal transducers involved in cell-cell communication, but no fingerprint is available of the functional distribution of TRP channels in the human endometrium during the luteal phase of the menstrual cycle. STUDY DESIGN, SIZE, DURATION Endometrial biopsy samples (previously frozen) from patients of reproductive age with regular menstrual cycles, who were undergoing diagnostic laparoscopic surgery for pain and/or infertility, were analysed. Samples were obtained from the menstrual (Days 1-5, n = 3), follicular (Days 6-14, n = 6), early luteal (Days 15-20, n = 5) and late luteal (Days 21-28, n = 5) phases. In addition, a total of 13 patient samples taken during the luteal phase were used to set up primary cell cultures for further experiments. PARTICIPANTS/MATERIALS, SETTING, METHODS Quantitative real-time PCR (qRT-PCR), immunocytochemistry, Fura2-based Ca(2+)-microfluorimetry and whole-cell patch clamp experiments were performed to study the functional expression pattern of TRP channels. Specific pharmacological agents, such as Δ(9)-tetrahydrocannabinol, GSK1016790A and 1-oleoyl-2-acetyl-glycerol, were used to functionally assess the expression of TRPV2, TRPV4 and TRPC6, respectively. MAIN RESULTS AND THE ROLE OF CHANCE Expression of TRPV2, TRPV4, TRPC1, TRPC4, TRPC6, TRPM4 and TRPM7 was detected at the mRNA level in endometrial biopsies (n = 19) and in primary endometrial stromal cell cultures obtained from patients during the luteal phase (n = 5) of the menstrual cycle. Messenger RNA levels of TRPV2, TRPC4 and TRPC6 were significantly increased (P < 0.01) in the late luteal phase compared with the early luteal phase. Immunocytochemistry experiments showed a positive staining for TRPV2, TRPV4, TRPC6 and TRPM7 in the plasma membrane and in the cytoplasm of primary endometrial stromal cells. Ca(2+)-microfluorimetry revealed significant increases (P < 0.001) in intracellular Ca(2+) levels when stromal cells were incubated with specific activators of TRPV2, TRPV4 and TRPC6. Further functional characterization was performed using whole-cell patch clamp experiments. Taken together, these data provide evidence for the functional activity of TRPV2, TRPV4, TRPC6 and TRPM7 channels in primary stromal cell cultures. LIMITATIONS, REASONS FOR CAUTION Although mRNA levels are detected for TRPV6, TRPC1, TRPC4 and TRPM4, the limited supply of specific antibodies and lack of selective pharmacological agents restricted any additional analysis of these ion channels. WIDER IMPLICATIONS OF THE FINDINGS Embryo implantation is a dynamic developmental process that integrates many signalling molecules into a precisely orchestrated programme. Our findings identified certain members of the TRP superfamily as candidate sensors in the epithelial-stromal crosstalk. These results are very helpful to unravel the signalling cascade required for successful embryo implantation. In addition, this knowledge could lead to new strategies to correct implantation failure and facilitate the development of novel non-hormonal contraceptives. STUDY FUNDING/ COMPETING INTERESTS This work was supported by grants from the Research Foundation-Flanders (G.0856.13N to J.V.), the Research Council of the KU Leuven (OT/13/113 to J.V. and T.D. and PF-TRPLe to T.V.) and by the Planckaert-De Waele fund (to J.V.). K.D.C. and K.H. are funded by the FWO Belgium. None of the authors have a conflict of interest.
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Affiliation(s)
- Katrien De Clercq
- Laboratory of Obstetrics and Experimental Gynaecology, KU Leuven, Herestraat 49 box 611, B-3000 Leuven, Belgium
| | - Katharina Held
- Laboratory of Obstetrics and Experimental Gynaecology, KU Leuven, Herestraat 49 box 611, B-3000 Leuven, Belgium Laboratory of Ion Channel Research and TRP Research Platform Leuven (TRPLe), KU Leuven, Herestraat 49 box 802, B-3000 Leuven, Belgium
| | - Rieta Van Bree
- Laboratory of Obstetrics and Experimental Gynaecology, KU Leuven, Herestraat 49 box 611, B-3000 Leuven, Belgium
| | - Christel Meuleman
- Department of Obstetrics and Gynaecology, Leuven University Fertility Centre, University Hospital Gasthuisberg, B-3000 Leuven, Belgium
| | - Karen Peeraer
- Department of Obstetrics and Gynaecology, Leuven University Fertility Centre, University Hospital Gasthuisberg, B-3000 Leuven, Belgium
| | - Carla Tomassetti
- Department of Obstetrics and Gynaecology, Leuven University Fertility Centre, University Hospital Gasthuisberg, B-3000 Leuven, Belgium
| | - Thomas Voets
- Laboratory of Ion Channel Research and TRP Research Platform Leuven (TRPLe), KU Leuven, Herestraat 49 box 802, B-3000 Leuven, Belgium
| | - Thomas D'Hooghe
- Department of Obstetrics and Gynaecology, Leuven University Fertility Centre, University Hospital Gasthuisberg, B-3000 Leuven, Belgium
| | - Joris Vriens
- Laboratory of Obstetrics and Experimental Gynaecology, KU Leuven, Herestraat 49 box 611, B-3000 Leuven, Belgium
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29
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De Loof A. The essence of female-male physiological dimorphism: differential Ca2+-homeostasis enabled by the interplay between farnesol-like endogenous sesquiterpenoids and sex-steroids? The Calcigender paradigm. Gen Comp Endocrinol 2015; 211:131-46. [PMID: 25540913 DOI: 10.1016/j.ygcen.2014.12.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 12/10/2014] [Accepted: 12/13/2014] [Indexed: 12/14/2022]
Abstract
Ca(2+) is the most omnipresent pollutant on earth, in higher concentrations a real threat to all living cells. When [Ca(2+)]i rises above 100 nM (=resting level), excess Ca(2+) needs to be confined in the SER and mitochondria, or extruded by the different Ca(2+)-ATPases. The evolutionary origin of eggs and sperm cells has a crucial, yet often overlooked link with Ca(2+)-homeostasis. Because there is no goal whatsoever in evolution, gametes did neither originate "with the purpose" of generating a progeny nor of increasing fitness by introducing meiosis. The explanation may simply be that females "invented the trick" to extrude eggs from their body as an escape strategy for getting rid of toxic excess Ca(2+) resulting from a sex-hormone driven increased influx into particular cells and tissues. The production of Ca(2+)-rich milk, seminal fluid in males and all secreted proteins by eukaryotic cells may be similarly explained. This view necessitates an upgrade of the role of the RER-Golgi system in extruding Ca(2+). In the context of insect metamorphosis, it has recently been (re)discovered that (some isoforms of) Ca(2+)-ATPases act as membrane receptors for some types of lipophilic ligands, in particular for endogenous farnesol-like sesquiterpenoids (FLS) and, perhaps, for some steroid hormones as well. A novel paradigm, tentatively named "Calcigender" emerges. Its essence is: gender-specific physiotypes ensue from differential Ca(2+)-homeostasis enabled by genetic differences, farnesol/FLS and sex hormones. Apparently the body of reproducing females gets temporarily more poisoned by Ca(2+) than the male one, a selective benefit rather than a disadvantage.
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Affiliation(s)
- Arnold De Loof
- Functional Genomics and Proteomics Group, Department of Biology, KU Leuven-University of Leuven, Belgium.
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30
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Hill M, Dušková M, Stárka L. Dehydroepiandrosterone, its metabolites and ion channels. J Steroid Biochem Mol Biol 2015; 145:293-314. [PMID: 24846830 DOI: 10.1016/j.jsbmb.2014.05.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 05/06/2014] [Accepted: 05/11/2014] [Indexed: 11/20/2022]
Abstract
This review is focused on the physiological and pathophysiological relevance of steroids influencing the activities of the central and peripheral nervous systems with regard to their concentrations in body fluids and tissues in various stages of human life like the fetal development or pregnancy. The data summarized in this review shows that DHEA and its unconjugated and sulfated metabolites are physiologically and pathophysiologically relevant in modulating numerous ion channels and participate in vital functions of the human organism. DHEA and its unconjugated and sulfated metabolites including 5α/β-reduced androstane steroids participate in various physiological and pathophysiological processes like the management of GnRH cyclic release, regulation of glandular and neurotransmitter secretions, maintenance of glucose homeostasis on one hand and insulin insensitivity on the other hand, control of skeletal muscle and smooth muscle activities including vasoregulation, promotion of tolerance to ischemia and other neuroprotective effects. In respect of prevalence of steroid sulfates over unconjugated steroids in the periphery and the opposite situation in the CNS, the sulfated androgens and androgen metabolites reach relevance in peripheral organs. The unconjugated androgens and estrogens are relevant in periphery and so much the more in the CNS due to higher concentrations of most unconjugated steroids in the CNS tissues than in circulation and peripheral organs. This article is part of a Special Issue entitled "Essential role of DHEA".
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Affiliation(s)
- M Hill
- Steroid Hormone Unit, Institute of Endocrinology, Národní třída 8, Prague 116 94, Praha 1, CZ 116 94, Czech Republic.
| | - M Dušková
- Steroid Hormone Unit, Institute of Endocrinology, Národní třída 8, Prague 116 94, Praha 1, CZ 116 94, Czech Republic.
| | - L Stárka
- Steroid Hormone Unit, Institute of Endocrinology, Národní třída 8, Prague 116 94, Praha 1, CZ 116 94, Czech Republic.
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31
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Bon RS, Beech DJ. In pursuit of small molecule chemistry for calcium-permeable non-selective TRPC channels -- mirage or pot of gold? Br J Pharmacol 2014; 170:459-74. [PMID: 23763262 DOI: 10.1111/bph.12274] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 04/29/2013] [Accepted: 05/09/2013] [Indexed: 12/21/2022] Open
Abstract
The primary purpose of this review is to address the progress towards small molecule modulators of human Transient Receptor Potential Canonical proteins (TRPC1, TRPC3, TRPC4, TRPC5, TRPC6 and TRPC7). These proteins generate channels for calcium and sodium ion entry. They are relevant to many mammalian cell types including acinar gland cells, adipocytes, astrocytes, cardiac myocytes, cochlea hair cells, endothelial cells, epithelial cells, fibroblasts, hepatocytes, keratinocytes, leukocytes, mast cells, mesangial cells, neurones, osteoblasts, osteoclasts, platelets, podocytes, smooth muscle cells, skeletal muscle and tumour cells. There are broad-ranging positive roles of the channels in cell adhesion, migration, proliferation, survival and turning, vascular permeability, hypertrophy, wound-healing, hypo-adiponectinaemia, angiogenesis, neointimal hyperplasia, oedema, thrombosis, muscle endurance, lung hyper-responsiveness, glomerular filtration, gastrointestinal motility, pancreatitis, seizure, innate fear, motor coordination, saliva secretion, mast cell degranulation, cancer cell drug resistance, survival after myocardial infarction, efferocytosis, hypo-matrix metalloproteinase, vasoconstriction and vasodilatation. Known small molecule stimulators of the channels include hyperforin, genistein and rosiglitazone, but there is more progress with inhibitors, some of which have promising potency and selectivity. The inhibitors include 2-aminoethoxydiphenyl borate, 2-aminoquinolines, 2-aminothiazoles, fatty acids, isothiourea derivatives, naphthalene sulfonamides, N-phenylanthranilic acids, phenylethylimidazoles, piperazine/piperidine analogues, polyphenols, pyrazoles and steroids. A few of these agents are starting to be useful as tools for determining the physiological and pathophysiological functions of TRPC channels. We suggest that the pursuit of small molecule modulators for TRPC channels is important but that it requires substantial additional effort and investment before we can reap the rewards of highly potent and selective pharmacological modulators.
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Affiliation(s)
- Robin S Bon
- School of Chemistry, University of Leeds, Leeds, UK
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Nilius B, Szallasi A. Transient Receptor Potential Channels as Drug Targets: From the Science of Basic Research to the Art of Medicine. Pharmacol Rev 2014; 66:676-814. [DOI: 10.1124/pr.113.008268] [Citation(s) in RCA: 348] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Kaneko Y, Szallasi A. Transient receptor potential (TRP) channels: a clinical perspective. Br J Pharmacol 2014; 171:2474-507. [PMID: 24102319 PMCID: PMC4008995 DOI: 10.1111/bph.12414] [Citation(s) in RCA: 271] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 08/28/2013] [Accepted: 08/31/2013] [Indexed: 12/14/2022] Open
Abstract
Transient receptor potential (TRP) channels are important mediators of sensory signals with marked effects on cellular functions and signalling pathways. Indeed, mutations in genes encoding TRP channels are the cause of several inherited diseases in humans (the so-called 'TRP channelopathies') that affect the cardiovascular, renal, skeletal and nervous systems. TRP channels are also promising targets for drug discovery. The initial focus of research was on TRP channels that are expressed on nociceptive neurons. Indeed, a number of potent, small-molecule TRPV1, TRPV3 and TRPA1 antagonists have already entered clinical trials as novel analgesic agents. There has been a recent upsurge in the amount of work that expands TRP channel drug discovery efforts into new disease areas such as asthma, cancer, anxiety, cardiac hypertrophy, as well as obesity and metabolic disorders. A better understanding of TRP channel functions in health and disease should lead to the discovery of first-in-class drugs for these intractable diseases. With this review, we hope to capture the current state of this rapidly expanding and changing field.
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Affiliation(s)
- Yosuke Kaneko
- Discovery Research Alliance, Ono Pharmaceutical Co. LtdOsaka, Japan
| | - Arpad Szallasi
- Department of Pathology and Laboratory Medicine, Monmouth Medical CenterLong Branch, NJ, USA
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Abstract
Drug-like compounds that exert biological activity towards TRP channels are either being used as cell biological tools or further developed into pharmacological lead structures aiming at therapeutic use in diseased states. Although drug-likeliness is not easy to predict, common rules include a relatively low molecular weight, physicochemical constraints, and the absence of known reactive or otherwise toxic groups. Small molecules that exert a biological activity to block, activate, or modulate TRP channels are intensely sought. Such tool compounds may be useful to assign native currents to a certain TRP channel and to validate the channel as a candidate target for future pharmacological intervention. Depending on the TRP channel isotype, these activities have reached different levels, with only few TRP channels modulators already being clinically tested in humans, whereas other compounds only underwent a preliminary validation. For some TRP channels, reliable low molecular weight inhibitors are not yet available. Hence, further efforts need to be undertaken in order to explore the physiological impact and possible therapeutic potential of TRP channel targeting with drug-like compounds.
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Affiliation(s)
- Michael Schaefer
- Rudolf-Boehm-Institut für Pharmakologie und Toxikologie, Härtelstraße 16-18, 04107, Leipzig, Germany,
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Abstract
Transient receptor potential (TRP) ion channels have been detected in neurons that are part of the neural network controlling reproductive physiology and behavior. In this chapter we will primarily take a look at the classical/canonical TRP (TRPC) channels but will also examine some other members of the TRP channel superfamily in reproductive (neuro)endocrinology. The referenced data suggest that different TRP proteins could play functional roles at different levels of the reproductive pathway. Still, our understanding of TRP channel involvement in (neuro)endocrinology is quite limited. Due to their mechanism of activation and complex regulation, these channels are however ideally suited to be part of the transduction machinery of hormone-secreting cells.
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Affiliation(s)
- Trese Leinders-Zufall
- Department of Physiology, University of Saarland School of Medicine, 66421, Homburg, Germany,
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Hill M, Pašková A, Kančeva R, Velíková M, Kubátová J, Kancheva L, Adamcová K, Mikešová M, Žižka Z, Koucký M, Šarapatková H, Kačer V, Matucha P, Meloun M, Pařízek A. Steroid profiling in pregnancy: a focus on the human fetus. J Steroid Biochem Mol Biol 2014; 139:201-22. [PMID: 23583279 DOI: 10.1016/j.jsbmb.2013.03.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 03/24/2013] [Accepted: 03/26/2013] [Indexed: 12/12/2022]
Abstract
In this review we focused on steroid metabolomics in human fetuses and newborns and its role in the physiology and pathophysiology of human pregnancy and subsequent stages of human life, and on the physiological relevance of steroids influencing the nervous systems with regards to their concentrations in the fetus. Steroid profiling provides valuable data for the diagnostics of diseases related to altered steroidogenesis in the fetal and maternal compartments and placenta. We outlined a potential use of steroid metabolomics for the prediction of reproductive disorders, misbalance of hypothalamic-pituitary-adrenal axis, and impaired insulin sensitivity in subsequent stages of human life. A possible role of steroids exhibiting a non-genomic effect in the development of gestational diabetes and in the neuroprotection via negative modulation of AMPA/kainate receptors was also indicated. Increasing progesterone synthesis and catabolism, declining production of tocolytic 5β-pregnane steroids, and rising activities of steroid sulfotransferases with the approaching term may be of importance in sustaining pregnancy. An increasing trend was demonstrated with advancing gestation toward the production of ketones (and 3β-hydroxyl groups in the case of 3α-hydroxy-steroids) was demonstrated in the fetus on the expense of 3α-hydroxy-, 17β-hydroxy-, and 20α-hydroxy-groups weakening in the sequence C17, C3, and C20. There was higher production of active progestogen but lower production of active estrogen and GABAergic steroids with the approaching term. Rising activities of placental CYP19A1 and oxidative isoforms of HSD17B, and of fetal CYP3A7 with advancing gestation may protect the fetus from hyperestrogenization. This article is part of a Special Issue entitled 'Pregnancy and Steroids'.
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Affiliation(s)
- Martin Hill
- Institute of Endocrinology, Národní třída 8, Prague CZ 116 94, Czech Republic.
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Neurosteroids, stress and depression: potential therapeutic opportunities. Neurosci Biobehav Rev 2012; 37:109-22. [PMID: 23085210 DOI: 10.1016/j.neubiorev.2012.10.005] [Citation(s) in RCA: 146] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 09/28/2012] [Accepted: 10/02/2012] [Indexed: 12/19/2022]
Abstract
Neurosteroids are potent and effective neuromodulators that are synthesized from cholesterol in the brain. These agents and their synthetic derivatives influence the function of multiple signaling pathways including receptors for γ-aminobutyric acid (GABA) and glutamate, the major inhibitory and excitatory neurotransmitters in the central nervous system (CNS). Increasing evidence indicates that dysregulation of neurosteroid production plays a role in the pathophysiology of stress and stress-related psychiatric disorders, including mood and anxiety disorders. In this paper, we review the mechanisms of neurosteroid action in brain with an emphasis on those neurosteroids that potently modulate the function of GABA(A) receptors. We then discuss evidence indicating a role for GABA and neurosteroids in stress and depression, and focus on potential strategies that can be used to manipulate CNS neurosteroid synthesis and function for therapeutic purposes.
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Miehe S, Crause P, Schmidt T, Löhn M, Kleemann HW, Licher T, Dittrich W, Rütten H, Strübing C. Inhibition of diacylglycerol-sensitive TRPC channels by synthetic and natural steroids. PLoS One 2012; 7:e35393. [PMID: 22530015 PMCID: PMC3328449 DOI: 10.1371/journal.pone.0035393] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Accepted: 03/16/2012] [Indexed: 12/19/2022] Open
Abstract
TRPC channels are a family of nonselective cation channels that regulate ion homeostasis and intracellular Ca2+ signaling in numerous cell types. Important physiological functions such as vasoregulation, neuronal growth, and pheromone recognition have been assigned to this class of ion channels. Despite their physiological relevance, few selective pharmacological tools are available to study TRPC channel function. We, therefore, screened a selection of pharmacologically active compounds for TRPC modulating activity. We found that the synthetic gestagen norgestimate inhibited diacylglycerol-sensitive TRPC3 and TRPC6 with IC50s of 3–5 µM, while half-maximal inhibition of TRPC5 required significantly higher compound concentrations (>10 µM). Norgestimate blocked TRPC-mediated vasopressin-induced cation currents in A7r5 smooth muscle cells and caused vasorelaxation of isolated rat aorta, indicating that norgestimate could be an interesting tool for the investigation of TRP channel function in native cells and tissues. The steroid hormone progesterone, which is structurally related to norgestimate, also inhibited TRPC channel activity with IC50s ranging from 6 to 18 µM but showed little subtype selectivity. Thus, TRPC channel inhibition by high gestational levels of progesterone may contribute to the physiological decrease of uterine contractility and immunosuppression during pregnancy.
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Affiliation(s)
- Susanne Miehe
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
| | - Peter Crause
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
| | - Thorsten Schmidt
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
| | - Matthias Löhn
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
| | - Heinz-Werner Kleemann
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
| | - Thomas Licher
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
| | - Werner Dittrich
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
| | - Hartmut Rütten
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
| | - Carsten Strübing
- Sanofi-Aventis Deutschland GmbH, Research and Development, Frankfurt am Main, Germany
- * E-mail:
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Chevalier M, Gilbert G, Lory P, Marthan R, Quignard JF, Savineau JP. Dehydroepiandrosterone (DHEA) inhibits voltage-gated T-type calcium channels. Biochem Pharmacol 2012; 83:1530-9. [PMID: 22391268 DOI: 10.1016/j.bcp.2012.02.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 02/24/2012] [Accepted: 02/24/2012] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND PURPOSE Dehydroepiandrosterone (DHEA) and its sulfated form, DHEAS, are the most abundant steroid hormones in the mammalian blood flow. DHEA may have beneficial effects in various pathophysiological conditions such as cardiovascular diseases or deterioration of the sense of well-being. However to date, the cellular mechanism underlying DHEA action remains elusive and may involve ion channel modulation. In this study, we have characterized the effect of DHEA on T-type voltage-activated calcium channels (T-channels), which are involved in several cardiovascular and neuronal diseases. KEY RESULTS Using the whole-cell patch-clamp technique, we demonstrate that DHEA inhibits the three recombinant T-channels (Ca(V)3.1, Ca(V)3.2 and Ca(V)3.3) expressed in NG108-15 cell line, as well as native T-channels in pulmonary artery smooth muscle cells. This effect of DHEA is both concentration (IC(50) between 2 and 7μM) and voltage-dependent and results in a significant shift of the steady-state inactivation curves toward hyperpolarized potentials. Consequently, DHEA reduces window T-current and inhibits membrane potential oscillations induced by Ca(V)3 channels. DHEA inhibition is not dependent on the activation of nuclear androgen or estrogen receptors and implicates a PTX-sensitive Gi protein pathway. Functionally, DHEA and the T-type inhibitor NNC 55-0396 inhibited KCl-induced contraction of pulmonary artery rings and their effect was not cumulative. CONCLUSIONS Altogether, the present data demonstrate that DHEA inhibits T-channels by a Gi protein dependent pathway. DHEA-induced alteration in T-channel activity could thus account for its therapeutic action and/or physiological effects.
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Affiliation(s)
- M Chevalier
- Univ. Bordeaux, Centre de recherche Cardio-Thoracique de Bordeaux, Bordeaux, France
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Abstract
Transient receptor potential canonical (TRPC) channels are the canonical (C) subset of the TRP proteins, which are widely expressed in mammalian cells. They are thought to be primarily involved in determining calcium and sodium entry and have wide-ranging functions that include regulation of cell proliferation, motility and contraction. The channels are modulated by a multiplicity of factors, putatively existing as integrators in the plasma membrane. This review considers the sensitivities of TRPC channels to lipids that include diacylglycerols, phosphatidylinositol bisphosphate, lysophospholipids, oxidized phospholipids, arachidonic acid and its metabolites, sphingosine-1-phosphate, cholesterol and some steroidal derivatives and other lipid factors such as gangliosides. Promiscuous and selective lipid sensing have been detected. There appear to be close working relationships with lipids of the phospholipase C and A2 enzyme systems, which may enable integration with receptor signalling and membrane stretch. There are differences in the properties of each TRPC channel that are further complicated by TRPC heteromultimerization. The lipids modulate activity of the channels or insertion in the plasma membrane. Lipid microenvironments and intermediate sensing proteins have been described that include caveolae, G protein signalling, SEC14-like and spectrin-type domains 1 (SESTD1) and podocin. The data suggest that lipid sensing is an important aspect of TRPC channel biology enabling integration with other signalling systems.
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Affiliation(s)
- D. J. Beech
- Faculty of Biological Sciences, Institute of Membrane and Systems Biology, University of Leeds, Leeds, UK
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Pregnenolone sulphate-independent inhibition of TRPM3 channels by progesterone. Cell Calcium 2011; 51:1-11. [PMID: 22000496 PMCID: PMC3275754 DOI: 10.1016/j.ceca.2011.09.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 09/12/2011] [Accepted: 09/21/2011] [Indexed: 11/23/2022]
Abstract
Transient Receptor Potential Melastatin 3 (TRPM3) is a widely expressed calcium-permeable non-selective cation channel that is stimulated by high concentrations of nifedipine or by physiological steroids that include pregnenolone sulphate. Here we sought to identify steroids that inhibit TRPM3. Channel activity was studied using calcium-measurement and patch-clamp techniques. Progesterone (0.01–10 μM) suppressed TRPM3 activity evoked by pregnenolone sulphate. Progesterone metabolites and 17β-oestradiol were also inhibitory but the effects were relatively small. Dihydrotestosterone was an inhibitor at concentrations higher than 1 μM. Corticosteroids lacked effect. Overlay assays indicated that pregnenolone sulphate, progesterone and dihydrotestosterone bound to TRPM3. In contrast to dihydrotestosterone, progesterone inhibited nifedipine-evoked TRPM3 activity or activity in the absence of an exogenous activator, suggesting a pregnenolone sulphate-independent mechanism of action. Dihydrotestosterone, like a non-steroid look-alike compound, acted as a competitive antagonist at the pregnenolone sulphate binding site. Progesterone inhibited endogenous TRPM3 in vascular smooth muscle cells. Relevance of TRPM3 or the progesterone effect to ovarian cells, which have been suggested to express TRPM3, was not identified. The data further define a chemical framework for competition with pregnenolone sulphate at TRPM3 and expand knowledge of steroid interactions with TRPM3, suggesting direct steroid binding and pregnenolone sulphate-independent inhibition by progesterone.
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