1
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Jeanneteau F. Stress and the risk of Alzheimer dementia: Can deconstructed engrams be rebuilt? J Neuroendocrinol 2023; 35:e13235. [PMID: 36775895 DOI: 10.1111/jne.13235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/20/2023] [Accepted: 01/21/2023] [Indexed: 01/26/2023]
Abstract
The exact neuropathological mechanism by which the dementia process unfolds is under intense scrutiny. The disease affects about 38 million people worldwide, 70% of which are clinically diagnosed with Alzheimer's disease (AD). If the destruction of synapses essential for learning, planning and decision-making is part of the problem, must the restoration of previously lost synapses be part of the solution? It is plausible that neuronal capacity to restitute information corresponds with the adaptive capacity of its connectivity reserve. A challenge will be to promote the functional connectivity that can compensate for the lost one. This will require better clarification of the remodeling of functional connectivity during the progression of AD dementia and its reversal upon experimental treatment. A major difficulty is to promote the neural pathways that are atrophied in AD dementia while suppressing others that are bolstered. Therapeutic strategies should aim at scaling functional connectivity to a just balance between the atrophic and hypertrophic systems. However, the exact factors that can help reach this objective are still unclear. Similarities between the effects of chronic stress and some neuropathological mechanisms underlying AD dementia support the idea that common components deserve prime attention as therapeutic targets.
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Affiliation(s)
- Freddy Jeanneteau
- Institut de génomique fonctionnelle, Université de Montpellier, INSERM, CNRS, Montpellier, France
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2
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Gulyaeva NV. Glucocorticoids Orchestrate Adult Hippocampal Plasticity: Growth Points and Translational Aspects. Biochemistry (Mosc) 2023; 88:565-589. [PMID: 37331704 DOI: 10.1134/s0006297923050012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/10/2023] [Accepted: 04/10/2023] [Indexed: 06/20/2023]
Abstract
The review analyzes modern concepts about the control of various mechanisms of the hippocampal neuroplasticity in adult mammals and humans by glucocorticoids. Glucocorticoid hormones ensure the coordinated functioning of key components and mechanisms of hippocampal plasticity: neurogenesis, glutamatergic neurotransmission, microglia and astrocytes, systems of neurotrophic factors, neuroinflammation, proteases, metabolic hormones, neurosteroids. Regulatory mechanisms are diverse; along with the direct action of glucocorticoids through their receptors, there are conciliated glucocorticoid-dependent effects, as well as numerous interactions between various systems and components. Despite the fact that many connections in this complex regulatory scheme have not yet been established, the study of the factors and mechanisms considered in the work forms growth points in the field of glucocorticoid-regulated processes in the brain and primarily in the hippocampus. These studies are fundamentally important for the translation into the clinic and the potential treatment/prevention of common diseases of the emotional and cognitive spheres and respective comorbid conditions.
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Affiliation(s)
- Natalia V Gulyaeva
- Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow, 117485, Russia.
- Research and Clinical Center for Neuropsychiatry of Moscow Healthcare Department, Moscow, 115419, Russia
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3
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Jeanneteau F, Meijer OC, Moisan MP. Structural basis of glucocorticoid receptor signaling bias. J Neuroendocrinol 2023; 35:e13203. [PMID: 36221223 DOI: 10.1111/jne.13203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 09/15/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022]
Abstract
Dissociation between the healthy and toxic effects of cortisol, a major stress-responding hormone has been a widely used strategy to develop anti-inflammatory glucocorticoids with fewer side effects. Such strategy falls short when treating brain disorders as timing and activity state within large-scale neuronal networks determine the physiological and behavioral specificity of cortisol response. Advances in structural molecular dynamics posit the bases for engineering glucocorticoids with precision bias for select downstream signaling pathways. Design of allosteric and/or cooperative control for the glucocorticoid receptor could help promote the beneficial and reduce the deleterious effects of cortisol on brain and behavior in disease conditions.
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Affiliation(s)
- Freddy Jeanneteau
- Institut de génomique fonctionnelle, Université de Montpellier, INSERM, CNRS, Montpellier, France
| | - Onno C Meijer
- Leiden University Medical Center, Leiden, The Netherlands
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4
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Luo J, Liu H, Hua S, Song L. The Correlation of PM2.5 Exposure with Acute Attack and Steroid Sensitivity in Asthma. Biomed Res Int 2022; 2022:2756147. [PMID: 36033576 PMCID: PMC9410784 DOI: 10.1155/2022/2756147] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/05/2022] [Accepted: 08/08/2022] [Indexed: 11/17/2022]
Abstract
Bronchial asthma is a common chronic inflammatory disease of the respiratory system. Asthma primarily manifests in reversible airflow limitation and airway inflammation, airway remodeling, and persistent airway hyperresponsiveness. PM2.5, also known as fine particulate matter, is the main component of air pollution and refers to particulate matter with an aerodynamic diameter of ≤2.5 μm. PM2.5 can be suspended in the air for an extensive time and, in addition, can contain or adsorb heavy metals, toxic gases, polycyclic aromatic hydrocarbons, bacterial viruses, and other harmful substances. Epidemiological studies have demonstrated that, in addition to increasing the incidence of asthma, PM2.5 exposure results in a significant increase in the incidence of hospital visits and deaths due to acute asthma attacks. Furthermore, PM2.5 was reported to induce glucocorticoid resistance in asthmatic individuals. Although various countries have implemented strict control measures, due to the wide range of PM2.5 sources, complex components, and unknown pathogenic mechanisms involving the atmosphere, environment, chemistry, and toxicology, PM2.5 damage to human health still cannot be effectively controlled. In this present review, we summarized the current knowledge base regarding the relationship between PM2.5 toxicity and the onset, acute attack prevalence, and steroid sensitivity in asthma.
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Affiliation(s)
- Jingjing Luo
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun 130021, China
| | - Han Liu
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun 130021, China
| | - Shucheng Hua
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun 130021, China
| | - Lei Song
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun 130021, China
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5
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Shah MA, Haris M, Faheem HI, Hamid A, Yousaf R, Rasul A, Shah GM, Khalil AAK, Wahab A, Khan H, Alhasani RH, Althobaiti NA. Cross-Talk between Obesity and Diabetes: Introducing Polyphenols as an Effective Phytomedicine to Combat the Dual Sword Diabesity. Curr Pharm Des 2022; 28:1523-1542. [PMID: 35762558 DOI: 10.2174/1381612828666220628123224] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 02/06/2022] [Indexed: 12/15/2022]
Abstract
: Obesity-associated diabetes mellitus, a chronic metabolic affliction accounting for 90% of all diabetic patients, has been affecting humanity extremely badly and escalating the risk of developing other serious disorders. It is observed that 0.4 billion people globally have diabetes, whose major cause is obesity. Currently, innumerable synthetic drugs like alogliptin and rosiglitazone are being used to get through diabetes, but they have certain complications, restrictions with severe side effects, and toxicity issues. Recently, the frequency of plant-derived phytochemicals as advantageous substitutes against diabesity is increasing progressively due to their unparalleled benefit of producing less side effects and toxicity. Of these phytochemicals, dietary polyphenols have been accepted as potent agents against the dual sword "diabesity". These polyphenols target certain genes and molecular pathways through dual mechanisms such as adiponectin upregulation, cannabinoid receptor antagonism, free fatty acid oxidation, ghrelin antagonism, glucocorticoid inhibition, sodium-glucose cotransporter inhibition, oxidative stress and inflammation inhibition etc. which sequentially help to combat both diabetes and obesity. In this review, we have summarized the most beneficial natural polyphenols along with their complex molecular pathways during diabesity.
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Affiliation(s)
| | - Muhammad Haris
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Hafiza Ishmal Faheem
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Ayesha Hamid
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Rimsha Yousaf
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Azhar Rasul
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
| | - Ghulam Mujtaba Shah
- Department of Pharmacy, Hazara University, Mansehra, Pakistan.,Department of Botany, Hazara University, Mansehra, Pakistan
| | - Atif Ali Khan Khalil
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi 46000, Pakistan
| | - Abdul Wahab
- Department of Pharmacy, Kohat University of Science & Technology, Kohat, Pakistan
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan, Pakistan
| | - Reem Hasaballah Alhasani
- Department of Biology, Faculty of Applied Science, Umm Al-Qura University, 21961 Makkah, Saudi Arabia
| | - Nora A Althobaiti
- Department of Biology, College of Science and Humanities-Al Quwaiiyah, Shaqra University, Al Quwaiiyah, Saudi Arabia
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6
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Dromard Y, Arango-Lievano M, Borie A, Dedin M, Fontanaud P, Torrent J, Garabedian MJ, Ginsberg SD, Jeanneteau F. Loss of glucocorticoid receptor phosphorylation contributes to cognitive and neurocentric damages of the amyloid-β pathway. Acta Neuropathol Commun 2022; 10:91. [PMID: 35733193 PMCID: PMC9219215 DOI: 10.1186/s40478-022-01396-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 06/13/2022] [Indexed: 12/22/2022] Open
Abstract
Aberrant cortisol and activation of the glucocorticoid receptor (GR) play an essential role in age-related progression of Alzheimer's disease (AD). However, the GR pathways required for influencing the pathobiology of AD dementia remain unknown. To address this, we studied an early phase of AD-like progression in the well-established APP/PS1 mouse model combined with targeted mutations in the BDNF-dependent GR phosphorylation sites (serines 134/267) using molecular, behavioral and neuroimaging approaches. We found that disrupting GR phosphorylation (S134A/S267A) in mice exacerbated the deleterious effects of the APP/PS1 genotype on mortality, neuroplasticity and cognition, without affecting either amyloid-β deposition or vascular pathology. The dynamics, maturation and retention of task-induced new dendritic spines of cortical excitatory neurons required GR phosphorylation at the BDNF-dependent sites that amyloid-β compromised. Parallel studies in postmortem human prefrontal cortex revealed AD subjects had downregulated BDNF signaling and concomitant upregulated cortisol pathway activation, which correlated with cognitive decline. These results provide key evidence that the loss of neurotrophin-mediated GR phosphorylation pathway promotes the detrimental effects of the brain cortisol response that contributes to the onset and/or progression of AD dementia. These findings have important translational implications as they provide a novel approach to treating AD dementia by identifying drugs that increase GR phosphorylation selectively at the neurotrophic sites to improve memory and cognition.
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Affiliation(s)
- Yann Dromard
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France
| | - Margarita Arango-Lievano
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France
| | - Amelie Borie
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France
| | - Maheva Dedin
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France
| | - Pierre Fontanaud
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France.,Imagerie du Petit Animal de Montpellier, 34090, Montpellier, France
| | - Joan Torrent
- Institut de Neuroscience de Montpellier, INSERM, 34090, Montpellier, France
| | - Michael J Garabedian
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY, 10016, USA
| | - Stephen D Ginsberg
- Nathan Kline Institute, Orangeburg, NY, 10962, USA.,Departments of Psychiatry, Neuroscience & Physiology, NYU Neuroscience Institute, New York University Grossman School of Medicine, New York, NY, 10016, USA
| | - Freddy Jeanneteau
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France.
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7
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Gerber AN, Newton R, Sasse SK. Repression of transcription by the glucocorticoid receptor: A parsimonious model for the genomics era. J Biol Chem 2021; 296:100687. [PMID: 33891947 DOI: 10.1016/j.jbc.2021.100687] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 12/15/2022] Open
Abstract
Glucocorticoids are potent anti-inflammatory drugs that are used to treat an extraordinary range of human disease, including COVID-19, underscoring the ongoing importance of understanding their molecular mechanisms. Early studies of GR signaling led to broad acceptance of models in which glucocorticoid receptor (GR) monomers tether repressively to inflammatory transcription factors, thus abrogating inflammatory gene expression. However, newer data challenge this core concept and present an exciting opportunity to reframe our understanding of GR signaling. Here, we present an alternate, two-part model for transcriptional repression by glucocorticoids. First, widespread GR-mediated induction of transcription results in rapid, primary repression of inflammatory gene transcription and associated enhancers through competition-based mechanisms. Second, a subset of GR-induced genes, including targets that are regulated in coordination with inflammatory transcription factors such as NF-κB, exerts secondary repressive effects on inflammatory gene expression. Within this framework, emerging data indicate that the gene set regulated through the cooperative convergence of GR and NF-κB signaling is central to the broad clinical effectiveness of glucocorticoids in terminating inflammation and promoting tissue repair.
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8
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HUZARD D, RAPPENEAU V, MEIJER OC, TOUMA C, ARANGO-LIEVANO M, GARABEDIAN MJ, JEANNETEAU F. Experience and activity-dependent control of glucocorticoid receptors during the stress response in large-scale brain networks. Stress 2021; 24:130-153. [PMID: 32755268 PMCID: PMC7907260 DOI: 10.1080/10253890.2020.1806226] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The diversity of actions of the glucocorticoid stress hormones among individuals and within organs, tissues and cells is shaped by age, gender, genetics, metabolism, and the quantity of exposure. However, such factors cannot explain the heterogeneity of responses in the brain within cells of the same lineage, or similar tissue environment, or in the same individual. Here, we argue that the stress response is continuously updated by synchronized neural activity on large-scale brain networks. This occurs at the molecular, cellular and behavioral levels by crosstalk communication between activity-dependent and glucocorticoid signaling pathways, which updates the diversity of responses based on prior experience. Such a Bayesian process determines adaptation to the demands of the body and external world. We propose a framework for understanding how the diversity of glucocorticoid actions throughout brain networks is essential for supporting optimal health, while its disruption may contribute to the pathophysiology of stress-related disorders, such as major depression, and resistance to therapeutic treatments.
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Affiliation(s)
- Damien HUZARD
- Department of Neuroscience and Physiology, University of Montpellier, CNRS, INSERM, Institut de Génomique Fonctionnelle, Montpellier, France
| | - Virginie RAPPENEAU
- Department of Behavioural Biology, University of Osnabrück, Osnabrück, Germany
| | - Onno C. MEIJER
- Division of Endocrinology, Department of Internal Medicine, Leiden University Medical Center, Leiden University, Leiden, the Netherlands
| | - Chadi TOUMA
- Department of Behavioural Biology, University of Osnabrück, Osnabrück, Germany
| | - Margarita ARANGO-LIEVANO
- Department of Neuroscience and Physiology, University of Montpellier, CNRS, INSERM, Institut de Génomique Fonctionnelle, Montpellier, France
| | | | - Freddy JEANNETEAU
- Department of Neuroscience and Physiology, University of Montpellier, CNRS, INSERM, Institut de Génomique Fonctionnelle, Montpellier, France
- Corresponding author:
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9
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Zimmerman JAO, Fang M, Doumbia B, Neyman A, Cha JH, Thomas M, Hall B, Wu M, Wilson AM, Pufall MA. Deacylcortivazol-like pyrazole regioisomers reveal a more accommodating expanded binding pocket for the glucocorticoid receptor. RSC Med Chem 2020; 12:203-212. [PMID: 34046609 DOI: 10.1039/d0md00278j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/26/2020] [Indexed: 01/26/2023] Open
Abstract
Glucocorticoids (GCs) are widely used, potent anti-inflammatory and chemotherapeutic drugs. They work by binding to the glucocorticoid receptor (GR), a ligand-activated transcription factor, inducing translocation to the nucleus and regulation of genes that influence a variety of cellular activities. Despite being effective for a broad number of conditions, GC use is limited by severe side effects. To identify ligands that are more selective, we synthesized pairs of regioisomers in the pyrazole ring that probe the expanded binding pocket of GR opened by deacylcortivazol (DAC). Using an Ullmann-type reaction, a deacylcortivazol-like (DAC-like) backbone was modified with five pendant groups at the 1'- and 2'-positions of the pyrazole ring, yielding 9 ligands. Most of the compounds were cytotoxic to leukemia cells, and all required GR expression. Both aliphatic and other aromatic groups substituted at the 2'-position produced ligands with GC activity, with phenyl and 4-fluorophenyl substitutions exhibiting high cellular affinity for the receptor and >5× greater potency than dexamethasone, a commonly used strong GC. Surprisingly, phenyl substitution at the 1'-position produced a high-affinity ligand with ∼10× greater potency than dexamethasone, despite little apparent room in the expanded binding pocket to accommodate 1'-modifications. Other 1'-modifications, however, were markedly less potent. The potency of the 2'-substituted and 1'-substituted DAC-like compounds tracked linearly with cellular affinity but had different slopes, suggesting a different mode of interaction with GR. These data provide evidence that the expanded binding pocket opened by deacylcortivazol is more accommodating that expected, allowing development of new, and possibly selective, GCs by substitution within the pyrazole ring.
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Affiliation(s)
- Jessica A O Zimmerman
- Department of Biochemistry, Carver College of Medicine, University of Iowa Iowa City IA USA .,Stead Family Department of Pediatrics, Carver College of Medicine, University of Iowa Iowa City IA USA
| | - Mimi Fang
- Department of Biochemistry, Carver College of Medicine, University of Iowa Iowa City IA USA
| | - Bintou Doumbia
- Department of Chemistry, Butler University Indianapolis IN USA
| | - Alexis Neyman
- Department of Chemistry, Butler University Indianapolis IN USA
| | - Ji Hyeon Cha
- Department of Chemistry, Butler University Indianapolis IN USA
| | - Michael Thomas
- Department of Chemistry, Butler University Indianapolis IN USA
| | | | - Meng Wu
- Department of Biochemistry, Carver College of Medicine, University of Iowa Iowa City IA USA .,University of Iowa High Throughput Screening (UIHTS) Core USA.,Division of Medicinal and Natural Products Chemistry, Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa USA
| | - Anne M Wilson
- Department of Chemistry, Butler University Indianapolis IN USA
| | - Miles A Pufall
- Department of Biochemistry, Carver College of Medicine, University of Iowa Iowa City IA USA
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10
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Wang E, Chen S, Yang H, Yang J, Li Y, Chen Y. CHOROIDAL THICKENING AND PACHYCHOROID IN CUSHING SYNDROME: Correlation With Endogenous Cortisol Level. Retina 2019; 39:408-14. [PMID: 29266048 DOI: 10.1097/IAE.0000000000001956] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE To investigate subfoveal choroidal thickness and pachychoroid and their correlation with hormone level in patients with endogenous Cushing syndrome (CS). METHODS We enrolled a consecutive series of patients with CS and healthy controls. All participants had swept-source optical coherence tomography. All patients with CS had hormone test including morning plasma-free cortisol, 24-hour urine-free cortisol (24UFC), and plasma adrenocorticotropic hormone. We compared subfoveal choroidal thickness and pachychoroid changes between two groups. We performed univariate and multivariate analysis to study correlation between hormone level and choroid thickness as well as pachychoroid in patients with CS. RESULTS Compared with control group, Cushing group had significantly greater subfoveal choroidal thickness (371.6 ± 114.9 and 320.0 ± 74.0, P = 0.002) and higher proportion of eyes with pachychoroid (53.1 and 14.3%, P < 0.001). Subfoveal choroidal thickness was significantly correlated with 24UFC (P = 0.007) but not with plasma-free cortisol (P = 0.48) or adrenocorticotropic hormone (P = 0.56). Pachychoroid was significantly correlated with 24UFC (P = 0.03) but not with plasma-free cortisol (P = 0.24) or adrenocorticotropic hormone (P = 0.32). CONCLUSION There was a positive correlation between elevated 24UFC and choroid thickening as well as pachychoroid, indicating the importance of normal endogenous cortisol level in maintaining the human choroid vasculature.
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11
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Sasse SK, Kadiyala V, Danhorn T, Panettieri RA, Phang TL, Gerber AN. Glucocorticoid Receptor ChIP-Seq Identifies PLCD1 as a KLF15 Target that Represses Airway Smooth Muscle Hypertrophy. Am J Respir Cell Mol Biol 2017; 57:226-237. [PMID: 28375666 DOI: 10.1165/rcmb.2016-0357oc] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Glucocorticoids exert important therapeutic effects on airway smooth muscle (ASM), yet few direct targets of glucocorticoid signaling in ASM have been definitively identified. Here, we show that the transcription factor, Krüppel-like factor 15 (KLF15), is directly induced by glucocorticoids in primary human ASM, and that KLF15 represses ASM hypertrophy. We integrated transcriptome data from KLF15 overexpression with genome-wide analysis of RNA polymerase (RNAP) II and glucocorticoid receptor (GR) occupancy to identify phospholipase C delta 1 as both a KLF15-regulated gene and a novel repressor of ASM hypertrophy. Our chromatin immunoprecipitation sequencing data also allowed us to establish numerous direct transcriptional targets of GR in ASM. Genes with inducible GR occupancy and putative antiinflammatory properties included IRS2, APPL2, RAMP1, and MFGE8. Surprisingly, we also observed GR occupancy in the absence of supplemental ligand, including robust GR binding peaks within the IL11 and LIF loci. Detection of antibody-GR complexes at these areas was abrogated by dexamethasone treatment in association with reduced RNA polymerase II occupancy, suggesting that noncanonical pathways contribute to cytokine repression by glucocorticoids in ASM. Through defining GR interactions with chromatin on a genome-wide basis in ASM, our data also provide an important resource for future studies of GR in this therapeutically relevant cell type.
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Affiliation(s)
| | | | - Thomas Danhorn
- 2 Center for Genes, Health, and the Environment, National Jewish Health, Denver, Colorado
| | - Reynold A Panettieri
- 3 Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, New Jersey; and
| | - Tzu L Phang
- 4 Department of Medicine, University of Colorado, Denver, Colorado
| | - Anthony N Gerber
- 1 Department of Medicine and.,4 Department of Medicine, University of Colorado, Denver, Colorado
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12
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Brossaud J, Roumes H, Helbling JC, Moisan MP, Pallet V, Ferreira G, Biyong EF, Redonnet A, Corcuff JB. Retinoic acid increases glucocorticoid receptor phosphorylation via cyclin-dependent kinase 5. Mol Cell Neurosci 2017; 82:96-104. [PMID: 28477983 DOI: 10.1016/j.mcn.2017.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/25/2017] [Accepted: 05/01/2017] [Indexed: 12/20/2022] Open
Abstract
Glucocorticoid receptor (GR) function is modulated by phosphorylation. As retinoic acid (RA) can activate some cytoplasmic kinases able to phosphorylate GR, we investigated whether RA could modulate GR phosphorylation in neuronal cells in a context of long-term glucocorticoid exposure. A 4-day treatment of dexamethasone (Dex) plus RA, showed that RA potentiated the (Dex)-induced phosphorylation on GR Serine 220 (pSer220GR) in the nucleus of a hippocampal HT22 cell line. This treatment increased the cytoplasmic ratio of p35/p25 proteins, which are major CDK5 cofactors. Roscovitine, a pharmacological CDK5 inhibitor, or a siRNA against CDK5 prevented RA potentiation of GR phosphorylation. Furthermore, roscovitine counter-acted the effect of RA on GR sensitive target proteins such as BDNF or tissue-transglutaminase. These data help understanding the interaction between RA- and glucocorticoid-signalling pathways, both of which have strong influences on the adult brain.
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Affiliation(s)
- Julie Brossaud
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France; Departments of Nuclear Medicine University Hospital and University of Bordeaux, France.
| | - Hélène Roumes
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | | | - Marie-Pierre Moisan
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Véronique Pallet
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Guillaume Ferreira
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Essi-Fanny Biyong
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Anabelle Redonnet
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Jean-Benoît Corcuff
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France; Departments of Nuclear Medicine University Hospital and University of Bordeaux, France
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Chen Q, Li C, Gong Z, Chan ECY, Snyder SA, Lam SH. Common deregulated gene expression profiles and morphological changes in developing zebrafish larvae exposed to environmental-relevant high to low concentrations of glucocorticoids. Chemosphere 2017; 172:429-439. [PMID: 28092764 DOI: 10.1016/j.chemosphere.2017.01.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 01/04/2017] [Accepted: 01/05/2017] [Indexed: 06/06/2023]
Abstract
Synthetic glucocorticoids have been detected in environmental waters and their biological potency have raised concerns of their impact on aquatic vertebrates especially fish. In this study, developing zebrafish larvae exposed to representative glucocorticoids (dexamethasone, prednisolone and triamcinolone) at 50 pM to 50 nM from 3 h post-fertilisation to 5 days post-fertilisation were investigated. Microarray analysis identified 1255, 1531, and 2380 gene probes, which correspondingly mapped to 660, 882 and 1238 human/rodent homologs, as deregulated by dexamethasone, prednisolone and triamcinolone, respectively. A total of 248 gene probes which mapped to 159 human/rodent homologs were commonly deregulated by the three glucocorticoids. These homologs were associated with over 20 molecular functions from cell cycle to cellular metabolisms, and were involved in the development and function of connective tissue, nervous, haematological, and digestive systems. Glucocorticoid receptor signalling, NRF2-mediated oxidative stress response and RAR signalling were among the top perturbed canonical pathways. Morphological analyses using four transgenic zebrafish lines revealed that the hepatic and endothelial-vascular systems were affected by all three glucocorticoids while nervous, pancreatic and myeloid cell systems were affected by one of them. Quantitative real-time PCR detected significant change in the expression of seven genes at 50 pM of all three glucocorticoids, a concentration comparable to total glucocorticoids reported in environmental waters. Three genes (cry2b, fbxo32, and klhl38b) responded robustly to all glucocorticoid concentrations tested. The common deregulated genes with the associated biological processes and morphological changes can be used for biological inference of glucocorticoid exposure in fish for future studies.
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Affiliation(s)
- Qiyu Chen
- NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Caixia Li
- NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, Singapore 117411, Singapore; Department of Biological Science, National University of Singapore, 14 Science Drive 4, Singapore 117543, Singapore
| | - Zhiyuan Gong
- Department of Biological Science, National University of Singapore, 14 Science Drive 4, Singapore 117543, Singapore
| | - Eric Chun Yong Chan
- Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Shane A Snyder
- University of Arizona, 1133 E. James E. Rogers Way, Harshbarger 108, Tucson, AZ 85721-0011, USA
| | - Siew Hong Lam
- NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, Singapore 117411, Singapore; Department of Biological Science, National University of Singapore, 14 Science Drive 4, Singapore 117543, Singapore.
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Khudyakov JI, Champagne CD, Meneghetti LM, Crocker DE. Blubber transcriptome response to acute stress axis activation involves transient changes in adipogenesis and lipolysis in a fasting-adapted marine mammal. Sci Rep 2017; 7:42110. [PMID: 28186107 PMCID: PMC5301240 DOI: 10.1038/srep42110] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 01/05/2017] [Indexed: 01/04/2023] Open
Abstract
Stress can compromise an animal’s ability to conserve metabolic stores and participate in energy-demanding activities that are critical for fitness. Understanding how wild animals, especially those already experiencing physiological extremes (e.g. fasting), regulate stress responses is critical for evaluating the impacts of anthropogenic disturbance on physiology and fitness, key challenges for conservation. However, studies of stress in wildlife are often limited to baseline endocrine measurements and few have investigated stress effects in fasting-adapted species. We examined downstream molecular consequences of hypothalamic-pituitary-adrenal (HPA) axis activation by exogenous adrenocorticotropic hormone (ACTH) in blubber of northern elephant seals due to the ease of blubber sampling and its key role in metabolic regulation in marine mammals. We report the first phocid blubber transcriptome produced by RNAseq, containing over 140,000 annotated transcripts, including metabolic and adipocytokine genes of interest. The acute response of blubber to stress axis activation, measured 2 hours after ACTH administration, involved highly specific, transient (lasting <24 hours) induction of gene networks that promote lipolysis and adipogenesis in mammalian adipocytes. Differentially expressed genes included key adipogenesis factors which can be used as blubber-specific markers of acute stress in marine mammals of concern for which sampling of other tissues is not possible.
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Affiliation(s)
- J I Khudyakov
- Department of Biological Sciences, University of the Pacific, 3601 Pacific Avenue, Stockton, CA 95211, USA.,National Marine Mammal Foundation, 2240 Shelter Island Drive Suite 200, San Diego, CA 92106, USA
| | - C D Champagne
- National Marine Mammal Foundation, 2240 Shelter Island Drive Suite 200, San Diego, CA 92106, USA.,Department of Biological Sciences, Old Dominion University, 1 Monarch Way, Norfolk, VA 23529, USA
| | - L M Meneghetti
- Department of Biology, Sonoma State University, 1801 E Cotati Avenue, Rohnert Park, CA 94928, USA
| | - D E Crocker
- Department of Biology, Sonoma State University, 1801 E Cotati Avenue, Rohnert Park, CA 94928, USA
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Arango-Lievano M, Jeanneteau F. Timing and crosstalk of glucocorticoid signaling with cytokines, neurotransmitters and growth factors. Pharmacol Res 2016; 113:1-17. [DOI: 10.1016/j.phrs.2016.08.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 08/02/2016] [Accepted: 08/02/2016] [Indexed: 01/05/2023]
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Catteau X, Simon P, Buxant F, Noël JC. Expression of the glucocorticoid receptor in breast cancer-associated fibroblasts. Mol Clin Oncol 2016; 5:372-376. [PMID: 27699028 PMCID: PMC5038192 DOI: 10.3892/mco.2016.975] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 05/30/2016] [Indexed: 12/03/2022] Open
Abstract
Cancer- associated fibroblasts (CAFs) are actively involved in breast carcinoma. Our previous study demonstrated that the majority of these CAFs were smooth muscle actin (SMA) positive and were therefore termed peritumoral myofibroblast (PMY). Glucocorticoid, linked or not with its receptor (GR), has been postulated to serve a major role in normal breast and breast carcinoma; however, their role in CAFs remains poorly understood. The aim of the present study was to assess the presence of GR in breast CAFs and particularly in PMY in 56 cases of invasive breast carcinoma in correlation with clinicopathological parameters, by immunohistochemistry. GR was observed in CAFs in 51 cases (91%) and were more frequent in luminal A subtype (19/19 cases; 100%). The stromal expression was statistically correlated with the tumor grade (P=0.03), the Ki-67 index (P=0.003) and the presence of GR in the epithelial component (P=0.01). The demonstration of a frequent expression of GR in breast CAFs may serve as an interesting target for future therapeutics for the regulation of the tumoral breast microenvironment.
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Affiliation(s)
- Xavier Catteau
- Department of Pathology, Tivoli University Hospital-Free University of Brussels, La Louvière, Belgium; Department of Pathology, Erasme University Hospital-Free University of Brussels, Brussels, Belgium; Institute of Pathology and Genetics, Gosselies, Belgium
| | - Philippe Simon
- Department of Pathology, Erasme University Hospital-Free University of Brussels, Brussels, Belgium; Gynaecology Unit, Erasme University Hospital-Free University of Brussels, Brussels, Belgium
| | - Frédéric Buxant
- Gynaecology Unit, Iris South Hospital-Free University of Brussels, Brussels, Belgium
| | - Jean-Christophe Noël
- Department of Pathology, Erasme University Hospital-Free University of Brussels, Brussels, Belgium; Gynaecopathology Unit, Pathology Department, Erasme University Hospital-Free University of Brussels, Brussels, Belgium
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Jeanneteau F, Arango-Lievano M. Linking Mitochondria to Synapses: New Insights for Stress-Related Neuropsychiatric Disorders. Neural Plast 2016; 2016:3985063. [PMID: 26885402 DOI: 10.1155/2016/3985063] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 11/09/2015] [Indexed: 12/31/2022] Open
Abstract
The brain evolved cellular mechanisms for adapting synaptic function to energy supply. This is particularly evident when homeostasis is challenged by stress. Signaling loops between the mitochondria and synapses scale neuronal connectivity with bioenergetics capacity. A biphasic “inverted U shape” response to the stress hormone glucocorticoids is demonstrated in mitochondria and at synapses, modulating neural plasticity and physiological responses. Low dose enhances neurotransmission, synaptic growth, mitochondrial functions, learning, and memory whereas chronic, higher doses produce inhibition of these functions. The range of physiological effects by stress and glucocorticoid depends on the dose, duration, and context at exposure. These criteria are met by neuronal activity and the circadian, stress-sensitive and ultradian, stress-insensitive modes of glucocorticoid secretion. A major hallmark of stress-related neuropsychiatric disorders is the disrupted glucocorticoid rhythms and tissue resistance to signaling with the glucocorticoid receptor (GR). GR resistance could result from the loss of context-dependent glucocorticoid signaling mediated by the downregulation of the activity-dependent neurotrophin BDNF. The coincidence of BDNF and GR signaling changes glucocorticoid signaling output with consequences on mitochondrial respiration efficiency, synaptic plasticity, and adaptive trajectories.
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