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Prossnitz ER, Barton M. The G protein-coupled oestrogen receptor GPER in health and disease: an update. Nat Rev Endocrinol 2023:10.1038/s41574-023-00822-7. [PMID: 37193881 DOI: 10.1038/s41574-023-00822-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/28/2023] [Indexed: 05/18/2023]
Abstract
Oestrogens and their receptors contribute broadly to physiology and diseases. In premenopausal women, endogenous oestrogens protect against cardiovascular, metabolic and neurological diseases and are involved in hormone-sensitive cancers such as breast cancer. Oestrogens and oestrogen mimetics mediate their effects via the cytosolic and nuclear receptors oestrogen receptor-α (ERα) and oestrogen receptor-β (ERβ) and membrane subpopulations as well as the 7-transmembrane G protein-coupled oestrogen receptor (GPER). GPER, which dates back more than 450 million years in evolution, mediates both rapid signalling and transcriptional regulation. Oestrogen mimetics (such as phytooestrogens and xenooestrogens including endocrine disruptors) and licensed drugs such as selective oestrogen receptor modulators (SERMs) and downregulators (SERDs) also modulate oestrogen receptor activity in both health and disease. Following up on our previous Review of 2011, we herein summarize the progress made in the field of GPER research over the past decade. We will review molecular, cellular and pharmacological aspects of GPER signalling and function, its contribution to physiology, health and disease, and the potential of GPER to serve as a therapeutic target and prognostic indicator of numerous diseases. We also discuss the first clinical trial evaluating a GPER-selective drug and the opportunity of repurposing licensed drugs for the targeting of GPER in clinical medicine.
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Affiliation(s)
- Eric R Prossnitz
- Department of Internal Medicine, Division of Molecular Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
- Center of Biomedical Research Excellence in Autophagy, Inflammation and Metabolism, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
- University of New Mexico Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
| | - Matthias Barton
- Molecular Internal Medicine, University of Zürich, Zürich, Switzerland.
- Andreas Grüntzig Foundation, Zürich, Switzerland.
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2
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Arterburn JB, Prossnitz ER. G Protein-Coupled Estrogen Receptor GPER: Molecular Pharmacology and Therapeutic Applications. Annu Rev Pharmacol Toxicol 2023; 63:295-320. [PMID: 36662583 PMCID: PMC10153636 DOI: 10.1146/annurev-pharmtox-031122-121944] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The actions of estrogens and related estrogenic molecules are complex and multifaceted in both sexes. A wide array of natural, synthetic, and therapeutic molecules target pathways that produce and respond to estrogens. Multiple receptors promulgate these responses, including the classical estrogen receptors of the nuclear hormone receptor family (estrogen receptors α and β), which function largely as ligand-activated transcription factors, and the 7-transmembrane G protein-coupled estrogen receptor, GPER, which activates a diverse array of signaling pathways. The pharmacology and functional roles of GPER in physiology and disease reveal important roles in responses to both natural and synthetic estrogenic compounds in numerous physiological systems. These functions have implications in the treatment of myriad disease states, including cancer, cardiovascular diseases, and metabolic disorders. This review focuses on the complex pharmacology of GPER and summarizes major physiological functions of GPER and the therapeutic implications and ongoing applications of GPER-targeted compounds.
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Affiliation(s)
- Jeffrey B Arterburn
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico, USA
- University of New Mexico Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, New Mexico, USA;
| | - Eric R Prossnitz
- University of New Mexico Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, New Mexico, USA;
- Center of Biomedical Research Excellence in Autophagy, Inflammation and Metabolism, and Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico, USA
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3
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Gohar EY, Almutlaq RN, Fan C, Balkawade RS, Butt MK, Curtis LM. Does G Protein-Coupled Estrogen Receptor 1 Contribute to Cisplatin-Induced Acute Kidney Injury in Male Mice? Int J Mol Sci 2022; 23:ijms23158284. [PMID: 35955435 PMCID: PMC9368456 DOI: 10.3390/ijms23158284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/18/2022] [Accepted: 07/21/2022] [Indexed: 12/04/2022] Open
Abstract
Nephrotoxicity is the dose-limiting side-effect of the chemotherapeutic agent cisplatin (Cp). Recent evidence points to renal protective actions of G protein-coupled estrogen receptor 1 (GPER1). In addition, it has been shown that GPER1 signaling elicits protective actions against acute ischemic injuries that involve multiple organ systems; however, the involvement of GPER1 signaling in Cp-induced acute kidney injury (AKI) remains unclear. This study tested whether genetic deletion of GPER1 exacerbates Cp-induced AKI in male mice. We subjected male mice, homozygous (homo) and heterozygous (het) knockout for the GPER1 gene, and wild-type (WT) littermates to Cp or saline injections and assessed markers for renal injury on the third day after injections. We also determined serum levels of proinflammatory markers in saline and Cp-treated mice. Given the protective role of heme oxygenase-1 (HO-1) in Cp-mediated apoptosis, we also investigated genotypic differences in renal HO-1 abundance, cell death, and proliferation by Western blotting, the TUNEL assay, and Ki67 immunostaining, respectively. Cp increased serum creatinine, urea, and neutrophil gelatinase-associated lipocalin (NGAL) levels, the renal abundance of kidney injury molecule-1, and NGAL in all groups. Cp-induced AKI resulted in comparable histological evidence of injury in all genotypes. WT and homo mice showed greater renal HO-1 abundance in response to Cp. Renal HO-1 abundance was lower in Cp-treated homo, compared to Cp-treated WT mice. Of note, GPER1 deletion elicited a remarkable increase in renal apoptosis; however, no genotypic differences in cell proliferation were observed. Cp augmented kidney Ki67-positive counts, regardless of the genotype. Overall, our data do not support a role for GPER1 in mediating Cp-induced renal injury. GPER1 deletion promotes renal apoptosis and diminishes HO-1 induction in response to Cp, suggesting that GPER1 may play cytoprotective and anti-apoptotic actions in AKI. GPER1-induced regulation of HO-1 and apoptosis may offer novel therapeutic targets for the treatment of AKI.
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Affiliation(s)
- Eman Y. Gohar
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Correspondence: ; Tel.: +1-615-875-0623
| | - Rawan N. Almutlaq
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
| | - Chunlan Fan
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
| | - Rohan S. Balkawade
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
| | - Maryam K. Butt
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
| | - Lisa M. Curtis
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (R.N.A.); (C.F.); (R.S.B.); (M.K.B.); (L.M.C.)
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Mauvais-Jarvis F, Lange CA, Levin ER. Membrane-Initiated Estrogen, Androgen, and Progesterone Receptor Signaling in Health and Disease. Endocr Rev 2022; 43:720-742. [PMID: 34791092 PMCID: PMC9277649 DOI: 10.1210/endrev/bnab041] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Indexed: 12/15/2022]
Abstract
Rapid effects of steroid hormones were discovered in the early 1950s, but the subject was dominated in the 1970s by discoveries of estradiol and progesterone stimulating protein synthesis. This led to the paradigm that steroid hormones regulate growth, differentiation, and metabolism via binding a receptor in the nucleus. It took 30 years to appreciate not only that some cellular functions arise solely from membrane-localized steroid receptor (SR) actions, but that rapid sex steroid signaling from membrane-localized SRs is a prerequisite for the phosphorylation, nuclear import, and potentiation of the transcriptional activity of nuclear SR counterparts. Here, we provide a review and update on the current state of knowledge of membrane-initiated estrogen (ER), androgen (AR) and progesterone (PR) receptor signaling, the mechanisms of membrane-associated SR potentiation of their nuclear SR homologues, and the importance of this membrane-nuclear SR collaboration in physiology and disease. We also highlight potential clinical implications of pathway-selective modulation of membrane-associated SR.
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Affiliation(s)
- Franck Mauvais-Jarvis
- Department of Medicine, Section of Endocrinology and Metabolism, Tulane University School of Medicine, New Orleans, LA, 70112, USA.,Tulane Center of Excellence in Sex-Based Biology & Medicine, New Orleans, LA, 70112, USA.,Southeast Louisiana Veterans Affairs Medical Center, New Orleans, LA, 70119, USA
| | - Carol A Lange
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA.,Department of Medicine (Division of Hematology, Oncology, and Transplantation), University of Minnesota, Minneapolis, MN 55455, USA.,Department of Pharmacology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Ellis R Levin
- Division of Endocrinology, Department of Medicine, University of California, Irvine, Irvine, CA, 92697, USA.,Department of Veterans Affairs Medical Center, Long Beach, Long Beach, CA, 90822, USA
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Yu X, Nguyen P, Burns NC, Heaps CL, Stallone JN, Sohrabji F, Han G. Activation of G protein-coupled estrogen receptor fine-tunes age-related decreased vascular activities in the aortae of female and male rats. Steroids 2022; 183:108997. [PMID: 35314416 DOI: 10.1016/j.steroids.2022.108997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 02/07/2022] [Accepted: 02/22/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Hormone replacement therapy was found to be effective in cardiovascular protection only in younger women, not in older women. In this study, we tested whether G protein-coupled estrogen receptor 1 (GPER) activation improves vascular activities in response to ET-1 and ACh in aging rats. METHODS Isometric tension study was applied on aortic rings isolated from young adult (5-7 months) and reproductive senescent middle-aged (10-12 months) female Sprague Dawley rats and age matched males. RESULTS The aortic contractile response to ET-1 and the relaxation response to ACh were reduced in the female middle-aged rats compared to the female young adult rats. The presence of G-1, the GPER agonist, normalized the reduced vascular activities. Cyclooxygenase inhibitor, meclofenamate, blocked the increased constriction effect of G-1, but further enhanced relaxation effect of G-1. There was no significant difference in aortic reactivity to either ET-1 or ACh between the male middle-aged and young adult rats. The contractile response to ET-1 was not different within the same age of the two sex groups, but there was a remarkable difference in relaxation response to ACh between young adult females and males with better response in females. GPER activation greatly improved the aortic relaxation of both young adult and middle-aged females, but not the males. CONCLUSIONS Endothelial dysfunction occurs earlier in males, but in females, dysfunction delays until middle age. GPER activation improves the vascular activities in females, but not males. It is promising to employ GPER as a potential drug target in cardiovascular disease in women.
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Affiliation(s)
- Xuan Yu
- Women's Health Division, Michael E. DeBakey Institute, Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, TX, USA
| | - Peter Nguyen
- Women's Health Division, Michael E. DeBakey Institute, Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, TX, USA
| | - Nioka C Burns
- Women's Health in Neuroscience Program, Department of Neuroscience and Experimental Therapeutics, Texas A&M Health Science Center, TX, USA
| | - Cristine L Heaps
- Women's Health Division, Michael E. DeBakey Institute, Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, TX, USA
| | - John N Stallone
- Women's Health Division, Michael E. DeBakey Institute, Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, TX, USA
| | - Farida Sohrabji
- Women's Health in Neuroscience Program, Department of Neuroscience and Experimental Therapeutics, Texas A&M Health Science Center, TX, USA
| | - Guichun Han
- Women's Health Division, Michael E. DeBakey Institute, Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, TX, USA; Department of Basic Sciences, Kentucky College of Osteopathic Medicine, University of Pikeville, KY, USA.
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6
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Ogola BO, Abshire CM, Visniauskas B, Kiley JX, Horton AC, Clark GL, Kilanowski-Doroh I, Diaz Z, Bicego AN, McNally AB, Zimmerman MA, Groban L, Trask AJ, Miller KS, Lindsey SH. Sex Differences in Vascular Aging and Impact of GPER Deletion. Am J Physiol Heart Circ Physiol 2022; 323:H336-H349. [PMID: 35749718 PMCID: PMC9306784 DOI: 10.1152/ajpheart.00238.2022] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aging is a nonmodifiable risk factor for cardiovascular disease associated with arterial stiffening and endothelial dysfunction. We hypothesized that sex differences exist in vascular aging processes and would be attenuated by global deletion of the G protein-coupled estrogen receptor. Blood pressure was measured by tail cuff plethysmography, pulse wave velocity (PWV) and echocardiography were assessed with high resolution ultrasound, and small vessel reactivity was measured using wire myography in adult (25 weeks) and middle-aged (57 weeks) male and female mice. Adult female mice displayed lower blood pressure and PWV, but this sex difference was absent in middle-aged mice. Aging significantly increased PWV but not blood pressure in both sexes. Adult female carotids were more distensible than males, but this sex difference was lost during aging. Acetylcholine-induced relaxation was greater in female than male mice at both ages, and only males showed aging-induced changes in cardiac hypertrophy and function. GPER deletion removed the sex difference in PWV as well as ex vivo stiffness in adult mice. The sex difference in blood pressure was absent in KO mice and was associated with endothelial dysfunction in females. These findings indicate that the impact of aging on arterial stiffening and endothelial function is not the same in male and female mice. Moreover, nongenomic estrogen signaling through GPER impacted vascular phenotype differently in male and female mice. Delineating sex differences in vascular changes during healthy aging is an important first step in improving early detection and sex-specific treatments in our aging population.
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Affiliation(s)
- Benard O Ogola
- Tulane University, Department of Pharmacology, New Orleans, LA
| | - Caleb M Abshire
- Tulane University, Department of Pharmacology, New Orleans, LA
| | | | - Jasmine X Kiley
- Tulane University, Department of Biomedical Engineering, New Orleans, LA
| | - Alec C Horton
- Tulane University, Department of Pharmacology, New Orleans, LA
| | - Gabrielle L Clark
- Tulane University, Department of Biomedical Engineering, New Orleans, LA
| | | | - Zaidmara Diaz
- Tulane University, Department of Pharmacology, New Orleans, LA
| | - Anne N Bicego
- Tulane University, Department of Pharmacology, New Orleans, LA
| | | | | | - Leanne Groban
- Wake Forest School of Medicine, Department of Anesthesiology, Winston Salem, NC
| | - Aaron J Trask
- Center for Cardiovascular Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH.,Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH
| | - Kristin S Miller
- Tulane University, Department of Biomedical Engineering, New Orleans, LA
| | - Sarah H Lindsey
- Tulane University, Department of Pharmacology, New Orleans, LA
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G-Protein-Coupled Estrogen Receptor Expression in Rat Uterine Artery Is Increased by Pregnancy and Induces Dilation in a Ca2+ and ERK1/2 Dependent Manner. Int J Mol Sci 2022; 23:ijms23115996. [PMID: 35682675 PMCID: PMC9180712 DOI: 10.3390/ijms23115996] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/23/2022] [Accepted: 05/23/2022] [Indexed: 02/04/2023] Open
Abstract
Increasing levels of estrogens across gestation are partly responsible for the physiological adaptations of the maternal vasculature to pregnancy. The G protein-coupled estrogen receptor (GPER) mediates acute vasorelaxing effects in the uterine vasculature, which may contribute to the regulation of uteroplacental blood flow. The aim of this study was to investigate whether GPER expression and vasorelaxation may occur following pregnancy. Elucidation of the functional signalling involved was also investigated. Radial uterine and third-order mesenteric arteries were isolated from non-pregnant (NP) and pregnant rats (P). GPER mRNA levels were determined and—concentration–response curve to the GPER-specific agonist, G1 (10−10–10−6 M), was assessed in arteries pre-constricted with phenylephrine. In uterine arteries, GPER mRNA expression was significantly increased and vasorelaxation to G1 was significantly enhanced in P compared with NP rats. Meanwhile, in mesenteric arteries, there was a similar order of magnitude in NP and P rats. Inhibition of L-type calcium channels and extracellular signal-regulated kinases 1/2 significantly reduced vasorelaxation triggered by G1 in uterine arteries. Increased GPER expression and GPER-mediated vasorelaxation are associated with the advancement of gestation in uterine arteries. The modulation of GPER is exclusive to uterine arteries, thus suggesting a physiological contribution of GPER toward the regulation of uteroplacental blood flow during pregnancy.
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Singh R, Nasci VL, Guthrie G, Ertuglu LA, Butt MK, Kirabo A, Gohar EY. Emerging Roles for G Protein-Coupled Estrogen Receptor 1 in Cardio-Renal Health: Implications for Aging. Biomolecules 2022; 12:biom12030412. [PMID: 35327604 PMCID: PMC8946600 DOI: 10.3390/biom12030412] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/25/2022] [Accepted: 03/01/2022] [Indexed: 02/05/2023] Open
Abstract
Cardiovascular (CV) and renal diseases are increasingly prevalent in the United States and globally. CV-related mortality is the leading cause of death in the United States, while renal-related mortality is the 8th. Despite advanced therapeutics, both diseases persist, warranting continued exploration of disease mechanisms to develop novel therapeutics and advance clinical outcomes for cardio-renal health. CV and renal diseases increase with age, and there are sex differences evident in both the prevalence and progression of CV and renal disease. These age and sex differences seen in cardio-renal health implicate sex hormones as potentially important regulators to be studied. One such regulator is G protein-coupled estrogen receptor 1 (GPER1). GPER1 has been implicated in estrogen signaling and is expressed in a variety of tissues including the heart, vasculature, and kidney. GPER1 has been shown to be protective against CV and renal diseases in different experimental animal models. GPER1 actions involve multiple signaling pathways: interaction with aldosterone and endothelin-1 signaling, stimulation of the release of nitric oxide, and reduction in oxidative stress, inflammation, and immune infiltration. This review will discuss the current literature regarding GPER1 and cardio-renal health, particularly in the context of aging. Improving our understanding of GPER1-evoked mechanisms may reveal novel therapeutics aimed at improving cardio-renal health and clinical outcomes in the elderly.
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Affiliation(s)
- Ravneet Singh
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Medical Research Building IV, Nashville, TN 37232, USA; (R.S.); (V.L.N.)
| | - Victoria L. Nasci
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Medical Research Building IV, Nashville, TN 37232, USA; (R.S.); (V.L.N.)
| | - Ginger Guthrie
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35233, USA; (G.G.); (M.K.B.)
| | - Lale A. Ertuglu
- Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; (L.A.E.); (A.K.)
| | - Maryam K. Butt
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35233, USA; (G.G.); (M.K.B.)
| | - Annet Kirabo
- Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; (L.A.E.); (A.K.)
| | - Eman Y. Gohar
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Medical Research Building IV, Nashville, TN 37232, USA; (R.S.); (V.L.N.)
- Correspondence:
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Early Inactivation of Membrane Estrogen Receptor Alpha (ERα) Recapitulates the Endothelial Dysfunction of Aged Mouse Resistance Arteries. Int J Mol Sci 2022; 23:ijms23052862. [PMID: 35270003 PMCID: PMC8911509 DOI: 10.3390/ijms23052862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 12/11/2022] Open
Abstract
Flow-mediated dilation (FMD) of resistance arteries is essential for tissue perfusion but it decreases with ageing. As estrogen receptor alpha (Erα encoded by Esr1), and more precisely membrane ERα, plays an important role in FMD in young mice in a ligand-independent fashion, we evaluated its influence on this arteriolar function in ageing. We first confirmed that in young (6-month-old) mice, FMD of mesenteric resistance arteries was reduced in Esr1−/− (lacking ERα) and C451A-ERα (lacking membrane ERα). In old (24-month-old) mice, FMD was reduced in WT mice compared to young mice, whereas it was not further decreased in Esr1−/− and C451A-ERα mice. Markers of oxidative stress were similarly increased in old WT and C451A-ERα mice. Reduction in oxidative stress with superoxide dismutase plus catalase or Mito-tempo, which reduces mitochondrial superoxide restored FMD to a normal control level in young C451A-ERα mice as well as in old WT mice and old C451A-ERα mice. Estradiol-mediated dilation was absent in old WT mice. We conclude that oxidative stress is a key event in the decline of FMD, and that an early defect in membrane ERα recapitulates phenotypically and functionally ageing of these resistance arteries. The loss of this function could take part in vascular ageing.
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10
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Wang XH, Ao QG, Cheng QL. Caloric restriction inhibits renal artery ageing by reducing endothelin-1 expression. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:979. [PMID: 34277779 PMCID: PMC8267285 DOI: 10.21037/atm-21-2218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/28/2021] [Indexed: 12/31/2022]
Abstract
Background The renal artery plays a central role in renal perfusion and is critical for proper renal function. Ageing is an independent risk factor for both impaired renal function and vascular disorders, and associated with an increase in the expression of the vasoconstrictor endothelin-1 (ET-1), and caloric restriction (CR) without malnutrition has been shown to be an effective inhibitor of renal dysfunction induced by ageing. The objective of this study was to determine whether CR-mediated alleviation of renal dysfunction is mediated by ET-1 expression. Methods The young (2 months, 2 M) and old (12 months, 12 M) Sprague-Dawley male rats were used and fed ad libitum. The 12-month-old rats were further divided into 12 M and 12 M-caloric restriction (CR) (30% calorie restriction). After 8 weeks, the renal tissues were showed by PAS staining, and age-related metabolic parameters and renal functions were detected in each group of rats. The inflammatory cytokines of interleukin (IL)-6, IL-1β, tumor necrosis factor alpha (TNF-α), and transforming growth factor beta 1 (TGF-β1) were analyzed using ELISA. The mRNA and protein expression in the renal artery were analysis by qRT-PCR and Immunoblot analysis. Results Ageing was associated with significant increases in 24 h urine protein content and serum triglyceride and cholesterol in 12 M rats, both of which were significantly inhibited in 12 M-CR. The mRNA expression and the secretion of IL-6, IL-1β, TNF-α, and TGF-β1 in the renal artery was significantly increased with ageing and inhibited by CR. CR also inhibited ageing-induced Edn1 (encoding ET-1) mRNA and protein expression in the renal artery. In addition, CR could regulate ET-1 expression by inhibiting the activation of NF-κB signaling and activation and induction in the expression of NF-E2-related factor 2 (Nrf2) and histone deacetylase and gene repressor sirtuin 1 (SIRT1), both of which play a central role in mitigating oxidative stress in young rats. Conclusions Moderate CR can reverse the ageing related kidney dysfunction by reducing the ET-1 expression. CR might be used as an alternative to prevent the ageing induced renal artery dysfunction.
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Affiliation(s)
- Xiao-Hua Wang
- Department of Nephrology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Qiang-Guo Ao
- Department of Nephrology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Qing-Li Cheng
- Department of Nephrology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China
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11
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Luttrell M, Kim H, Shin SY, Holly D, Massett MP, Woodman CR. Heterogeneous effect of aging on vasorelaxation responses in large and small arteries. Physiol Rep 2020; 8:e14341. [PMID: 31960593 PMCID: PMC6971410 DOI: 10.14814/phy2.14341] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Aging is associated with impaired vascular function characterized in part by attenuated vasorelaxation to acetylcholine (ACh) and sodium nitroprusside (SNP). Due to structural and functional differences between conduit and resistance arteries, the effect of aging on vasorelaxation responses may vary along the arterial tree. Our purpose was to determine age-related differences in vasorelaxation responses in large and small arteries. Responses to the endothelium-dependent vasodilator acetylcholine (ACh) and the endothelium-independent vasodilator sodium nitroprusside (SNP) were assessed in abdominal aorta (AA), iliac arteries (IA), femoral arteries (FA), and gastrocnemius feed arteries (GFA) from young and old male rats. ACh-mediated vasorelaxation was significantly impaired in old AA and IA. SNP-mediated vasorelaxation was impaired in old AA. To investigate a potential mechanism for impaired relaxation responses in AA and IA, we assessed eNOS protein content and interactions with caveolin-1 (Cav-1), and calmodulin (CaM) via immunoprecipitation and immunoblot analysis. We found no age differences in eNOS content or interactions with Cav1 and CaM. Combined data from all rats revealed that eNOS content was higher in IA compared to AA and FA (p < .001), and was higher in GFA than AA (p < .05). Cav1:eNOS interaction was greater in FA than in AA and IA (p < .01), and in GFA compared to IA (p < .05). No differences in CaM:eNOS were detected. In conclusion, age-related impairment of vasorelaxation responses occurred in the large conduit, but not small conduit or resistance arteries. These detrimental effects of age were not associated with changes in eNOS or its interactions with Cav-1 or CaM.
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Affiliation(s)
- Meredith Luttrell
- Department of Health & KinesiologyTexas A&M UniversityCollege StationTexas
| | - Hyoseon Kim
- Department of Health & KinesiologyTexas A&M UniversityCollege StationTexas
- Present address:
Department of Kinesiology and Sport ManagementTexas Tech UniversityLubbockTexas
| | - Song Yi Shin
- Department of Health & KinesiologyTexas A&M UniversityCollege StationTexas
| | - Dylan Holly
- Department of Health & KinesiologyTexas A&M UniversityCollege StationTexas
| | - Michael P. Massett
- Department of Health & KinesiologyTexas A&M UniversityCollege StationTexas
- Present address:
Department of Kinesiology and Sport ManagementTexas Tech UniversityLubbockTexas
| | - Christopher R. Woodman
- Department of Health & KinesiologyTexas A&M UniversityCollege StationTexas
- Department of Veterinary Physiology & PharmacologyTexas A&M UniversityCollege StationTexas
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Barton M, Meyer MR, Prossnitz ER. Nox1 downregulators: A new class of therapeutics. Steroids 2019; 152:108494. [PMID: 31518594 PMCID: PMC6891104 DOI: 10.1016/j.steroids.2019.108494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/29/2019] [Accepted: 09/06/2019] [Indexed: 02/07/2023]
Abstract
Chronic non-communicable diseases share the pathomechanism of increased reactive oxygen species (ROS) production by nicotinamide adenine dinucleotide phosphate (NADPH) oxidases, known as Nox. The recent discovery that expression of Nox1, a Nox isoform that has been implicated in the pathogenesis of cardiovascular and kidney disease and cancer is regulated by the expression and activity of G protein-coupled estrogen receptor (GPER) led to the identification of orally active small-molecule GPER blockers as selective Nox1 downregulators (NDRs). Preclinical studies using NDRs have demonstrated beneficial effects in vascular disease, hypertension, and glomerular renal injury. These findings suggest the therapeutic potential of NDRs, which reduce Nox1 protein levels, not only for cardiovascular disease conditions including arterial hypertension, pulmonary hypertension, heart failure with preserved ejection fraction (HFpEF), and chronic renal disease, but also for other non-communicable diseases, such as cerebrovascular disease and vascular dementia, Alzheimer's disease, autoimmune diseases and cancer, in which elevated Nox1-derived ROS production plays a causal role.
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Affiliation(s)
- Matthias Barton
- Molecular Internal Medicine, University of Zürich, Zürich, Switzerland; Andreas Grüntzig Foundation, Zürich, Switzerland.
| | - Matthias R Meyer
- Division of Cardiology, Triemli City Hospital, Zürich, Switzerland; Institute of Primary Care, University of Zürich, Zürich, Switzerland
| | - Eric R Prossnitz
- Division of Molecular Medicine, Department of Internal Medicine, Health Sciences Center, Albuquerque, NM, USA; University of New Mexico Comprehensive Cancer Center, University of New Mexico, Health Sciences Center, Albuquerque, NM, USA
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Ogola BO, Zimmerman MA, Sure VN, Gentry KM, Duong JL, Clark GL, Miller KS, Katakam PVG, Lindsey SH. G Protein-Coupled Estrogen Receptor Protects From Angiotensin II-Induced Increases in Pulse Pressure and Oxidative Stress. Front Endocrinol (Lausanne) 2019; 10:586. [PMID: 31507536 PMCID: PMC6718465 DOI: 10.3389/fendo.2019.00586] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/09/2019] [Indexed: 12/14/2022] Open
Abstract
Our previous work showed that the G protein-coupled estrogen receptor (GPER) is protective in the vasculature and kidneys during angiotensin (Ang) II-dependent hypertension by inhibiting oxidative stress. The goal of the current study was to assess the impact of GPER deletion on sex differences in Ang II-induced hypertension and oxidative stress. Male and female wildtype and GPER knockout mice were implanted with radiotelemetry probes for measurement of baseline blood pressure before infusion of Ang II (700 ng/kg/min) for 2 weeks. Mean arterial pressure was increased to the same extent in all groups, but female wildtype mice were protected from Ang II-induced increases in pulse pressure, aortic wall thickness, and Nox4 mRNA. In vitro studies using vascular smooth muscle cells found that pre-treatment with the GPER agonist G-1 inhibited Ang II-induced ROS and NADP/NADPH. Ang II increased while G-1 decreased Nox4 mRNA and protein. The effects of Ang II were blocked by losartan and Nox4 siRNA, while the effects of G-1 were inhibited by adenylyl cyclase inhibition and mimicked by phosphodiesterase inhibition. We conclude that during conditions of elevated Ang II, GPER via the cAMP pathway suppresses Nox4 transcription to limit ROS production and prevent arterial stiffening. Taken together with our previous work, this study provides insight into how acute estrogen signaling via GPER provides cardiovascular protection during Ang II hypertension and potentially other diseases characterized by increased oxidative stress.
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Affiliation(s)
- Benard O. Ogola
- Department of Pharmacology, Tulane University, New Orleans, LA, United States
| | | | - Venkata N. Sure
- Department of Pharmacology, Tulane University, New Orleans, LA, United States
| | - Kaylee M. Gentry
- Department of Pharmacology, Tulane University, New Orleans, LA, United States
| | - Jennifer L. Duong
- Department of Pharmacology, Tulane University, New Orleans, LA, United States
| | - Gabrielle L. Clark
- Department of Biomedical Engineering, Tulane University, New Orleans, LA, United States
| | - Kristin S. Miller
- Department of Biomedical Engineering, Tulane University, New Orleans, LA, United States
| | | | - Sarah H. Lindsey
- Department of Pharmacology, Tulane University, New Orleans, LA, United States
- *Correspondence: Sarah H. Lindsey
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The G protein-coupled estrogen receptor (GPER/GPR30) may serve as a prognostic marker in early-stage cervical cancer. J Cancer Res Clin Oncol 2017; 144:13-19. [PMID: 28924735 DOI: 10.1007/s00432-017-2510-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 08/20/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Estrogen signalling is transmitted via various receptors and multiple intracellular signalling pathways. Estrogen receptor alpha (ERα)-mediated transcription of target genes has been demonstrated to be closely linked to human papilloma virus (HPV)-induced carcinogenesis in case of cervical cancer. So far, the role of non-genomic estrogen signals in cervical cancer, e.g. transmitted by the G protein-coupled estrogen receptor (GPER) remains to be rather elusive. Today's knowledge on the role of GPER in cervical cancer is sparse and-to the best of our knowledge-GPER has not been investigated in context with clinicopathological parameters or prognosis of cervical cancer. Therefore, the current study investigated whether GPER is expressed in cervical cancer tissue. Further, GPER was correlated to clinicopathological parameters, tissue markers of cervical carcinogenesis and to patient overall and recurrence-free survival. MATERIALS AND METHODS Cervical cancer tissue was collected from 156 patients during surgery between 1993 and 2002. GPER immunostaining was performed on all the cases and correlated to clinicopathological data. More than half of all patients were diagnosed at advanced stage (FIGO II-IV 93/156; 59.6%) of disease. The large majority of patients presented with tumours of intermediate or high grade (G2-3 140/152, 92.1%). 22 cervical cancer-related deaths (22/156, 14.1%) were documented during the follow-up period. RESULTS GPER was detected in various subcellular staining patterns. In 129/156 (82.7%) cases GPER was expressed in the tumour cell cytoplasm (GPERcyt). GPER immunopositivity at the cell membrane (GPERmem) was found in 114/156 (73.1%) cases. While co-occurrence of both membrane and cytoplasmic staining (GPERcyt + GPERmem) was detected in the majority of tissue samples (101/156; 64.7%), only few cases (14/156, 9.0%) were classified as not expressing GPER at all. GPERcyt was positively correlated with tumour grade. Statistical associations of GPER and both p16 and p53 were detected. Finally, immunopositivity of GPERcyt was predictive for favourable overall as well as recurrence-free survival in cervical cancer of early stage (FIGO I). CONCLUSION This retrospective study reports GPERcyt to be associated with improved overall and recurrence-free survival in early-stage cervical cancer. Further investigations are needed thus to determine whether this observation may be of clinical impact. Interestingly, Raloxifene-a GPER-activating selective estrogen receptor modulator-has recently been demonstrated to be preventive for cervical cancer relapse in mice. Whether this effect is only reliant on raloxifene blocking ERα or may also be related to activation of GPER remains to be determined.
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