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Walker AR, Parkin HA, Hye Kim S, Terzidou V, Woodward DF, Bennett PR, Hanyaloglu AC. Constitutive internalisation of EP2 differentially regulates G protein signalling. J Mol Endocrinol 2024; 73:e230153. [PMID: 38639976 PMCID: PMC11227035 DOI: 10.1530/jme-23-0153] [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: 01/22/2024] [Accepted: 04/19/2024] [Indexed: 04/20/2024]
Abstract
The prostanoid G protein-coupled receptor (GPCR) EP2 is widely expressed and implicated in endometriosis, osteoporosis, obesity, pre-term labour and cancer. Internalisation and intracellular trafficking are critical for shaping GPCR activity, yet little is known regarding the spatial programming of EP2 signalling and whether this can be exploited pharmacologically. Using three EP2-selective ligands that favour activation of different EP2 pathways, we show that EP2 undergoes limited agonist-driven internalisation but is constitutively internalised via dynamin-dependent, β-arrestin-independent pathways. EP2 was constitutively trafficked to early and very early endosomes (VEE), which was not altered by ligand activation. APPL1, a key adaptor and regulatory protein of the VEE, did not impact EP2 agonist-mediated cAMP. Internalisation was required for ~70% of the acute butaprost- and AH13205-mediated cAMP signalling, yet PGN9856i, a Gαs-biased agonist, was less dependent on receptor internalisation for its cAMP signalling, particularly in human term pregnant myometrial cells that endogenously express EP2. Inhibition of EP2 internalisation partially reduced calcium signalling activated by butaprost or AH13205 and had no effect on PGE2 secretion. This indicates an agonist-dependent differential spatial requirement for Gαs and Gαq/11 signalling and a role for plasma membrane-initiated Gαq/11-Ca2+-mediated PGE2 secretion. These findings reveal a key role for EP2 constitutive internalisation in its signalling and potential spatial bias in mediating its downstream functions. This, in turn, could highlight important considerations for future selective targeting of EP2 signalling pathways.
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Affiliation(s)
- Abigail R Walker
- Institute of Reproductive and Developmental Biology, Department Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Holly A Parkin
- Institute of Reproductive and Developmental Biology, Department Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Sung Hye Kim
- Institute of Reproductive and Developmental Biology, Department Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Vasso Terzidou
- Institute of Reproductive and Developmental Biology, Department Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - David F Woodward
- Department of Bioengineering, Imperial College London, London, UK
| | - Phillip R Bennett
- Institute of Reproductive and Developmental Biology, Department Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Aylin C Hanyaloglu
- Institute of Reproductive and Developmental Biology, Department Metabolism, Digestion and Reproduction, Imperial College London, London, UK
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Nayak AP, Javed E, Villalba DR, Wang Y, Morelli HP, Shah SD, Kim N, Ostrom RS, Panettieri RA, An SS, Tang DD, Penn RB. Prorelaxant E-type Prostanoid Receptors Functionally Partition to Different Procontractile Receptors in Airway Smooth Muscle. Am J Respir Cell Mol Biol 2023; 69:584-591. [PMID: 37523713 PMCID: PMC10633839 DOI: 10.1165/rcmb.2022-0445oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 07/31/2023] [Indexed: 08/02/2023] Open
Abstract
Prostaglandin E2 imparts diverse physiological effects on multiple airway cells through its actions on four distinct E-type prostanoid (EP) receptor subtypes (EP1-EP4). Gs-coupled EP2 and EP4 receptors are expressed on airway smooth muscle (ASM), yet their capacity to regulate the ASM contractile state remains subject to debate. We used EP2 and EP4 subtype-specific agonists (ONO-259 and ONO-329, respectively) in cell- and tissue-based models of human ASM contraction-magnetic twisting cytometry (MTC), and precision-cut lung slices (PCLSs), respectively-to study the EP2 and EP4 regulation of ASM contraction and signaling under conditions of histamine or methacholine (MCh) stimulation. ONO-329 was superior (<0.05) to ONO-259 in relaxing MCh-contracted PCLSs (log half maximal effective concentration [logEC50]: 4.9 × 10-7 vs. 2.2 × 10-6; maximal bronchodilation ± SE, 35 ± 2% vs. 15 ± 2%). However, ONO-259 and ONO-329 were similarly efficacious in relaxing histamine-contracted PCLSs. Similar differential effects were observed in MTC studies. Signaling analyses revealed only modest differences in ONO-329- and ONO-259-induced phosphorylation of the protein kinase A substrates VASP and HSP20, with concomitant stimulation with MCh or histamine. Conversely, ONO-259 failed to inhibit MCh-induced phosphorylation of the regulatory myosin light chain (pMLC20) and the F-actin/G-actin ratio (F/G-actin ratio) while effectively inhibiting their induction by histamine. ONO-329 was effective in reversing induced pMLC20 and the F/G-actin ratio with both MCh and histamine. Thus, the contractile-agonist-dependent differential effects are not explained by changes in the global levels of phosphorylated protein kinase A substrates but are reflected in the regulation of pMLC20 (cross-bridge cycling) and F/G-actin ratio (actin cytoskeleton integrity, force transmission), implicating a role for compartmentalized signaling involving muscarinic, histamine, and EP receptor subtypes.
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Affiliation(s)
- Ajay P. Nayak
- Center for Translational Medicine, Jane and Leonard Korman Lung Institute, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Elham Javed
- Center for Translational Medicine, Jane and Leonard Korman Lung Institute, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Dominic R. Villalba
- Center for Translational Medicine, Jane and Leonard Korman Lung Institute, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Yinna Wang
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Henry P. Morelli
- Center for Translational Medicine, Jane and Leonard Korman Lung Institute, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Sushrut D. Shah
- Center for Translational Medicine, Jane and Leonard Korman Lung Institute, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Nicholas Kim
- Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, New Jersey
| | - Rennolds S. Ostrom
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University, Irvine, California; and
| | - Reynold A. Panettieri
- Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, New Jersey
| | - Steven S. An
- Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, New Jersey
| | - Dale D. Tang
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Raymond B. Penn
- Center for Translational Medicine, Jane and Leonard Korman Lung Institute, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
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Ligresti G, Raslan AA, Hong J, Caporarello N, Confalonieri M, Huang SK. Mesenchymal cells in the Lung: Evolving concepts and their role in fibrosis. Gene 2023; 859:147142. [PMID: 36603696 PMCID: PMC10068350 DOI: 10.1016/j.gene.2022.147142] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 12/18/2022] [Accepted: 12/21/2022] [Indexed: 01/03/2023]
Abstract
Mesenchymal cells in the lung are crucial during development, but also contribute to the pathogenesis of fibrotic disorders, including idiopathic pulmonary fibrosis (IPF), the most common and deadly form of fibrotic interstitial lung diseases. Originally thought to behave as supporting cells for the lung epithelium and endothelium with a singular function of producing basement membrane, mesenchymal cells encompass a variety of cell types, including resident fibroblasts, lipofibroblasts, myofibroblasts, smooth muscle cells, and pericytes, which all occupy different anatomic locations and exhibit diverse homeostatic functions in the lung. During injury, each of these subtypes demonstrate remarkable plasticity and undergo varying capacity to proliferate and differentiate into activated myofibroblasts. Therefore, these cells secrete high levels of extracellular matrix (ECM) proteins and inflammatory cytokines, which contribute to tissue repair, or in pathologic situations, scarring and fibrosis. Whereas epithelial damage is considered the initial trigger that leads to lung injury, lung mesenchymal cells are recognized as the ultimate effector of fibrosis and attempts to better understand the different functions and actions of each mesenchymal cell subtype will lead to a better understanding of why fibrosis develops and how to better target it for future therapy. This review summarizes current findings related to various lung mesenchymal cells as well as signaling pathways, and their contribution to the pathogenesis of pulmonary fibrosis.
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Affiliation(s)
- Giovanni Ligresti
- Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston MA, US.
| | - Ahmed A Raslan
- Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston MA, US
| | - Jeongmin Hong
- Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston MA, US
| | - Nunzia Caporarello
- Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN, US
| | - Marco Confalonieri
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Steven K Huang
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, US
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Di Diego Garcia F, Cabrerizo G, Paletta A, Prez PS, Varese A, Geffner J, Bello N, Fridman V, Stecher D, Ceballos A, Remes Lenicov F. Resistance to Prostaglandin E2 Promotes Monocyte Activation During Chronic HIV Infection. J Infect Dis 2023; 227:423-433. [PMID: 36482781 DOI: 10.1093/infdis/jiac480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/28/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Monocyte activation is a driver of inflammation in the course of chronic HIV infection. Prostaglandin E2 (PGE2) is known to mediate anti-inflammatory effects, notably the inhibition of tumor necrosis factor- (TNF-) production by monocytes. We aim to investigate the effects of PGE2 on activation of monocytes in chronic HIV infection and the mechanisms through which PGE2 modulates their inflammatory signature. METHODS We recruited a group of people with HIV (PWH) and matched healthy uninfected persons. We compared plasma levels of PGE2, monocyte activation, and sensitivity of monocytes to the inhibitory actions mediated by PGE2. RESULTS We found increased plasma levels of PGE2 in PWH, and an activated phenotype in circulating monocytes, compared with uninfected individuals. Monocytes from PWH showed a significant resistance to the inhibitory actions mediated by PGE2; the concentration of PGE2 able to inhibit 50 of the production of TNF- by lipopolysaccharide-stimulated monocytes was 10 times higher in PWH compared with uninfected controls. Furthermore, the expression of phosphodiesterase 4B, a negative regulator of PGE2 activity, was significantly increased in monocytes from PWH. CONCLUSIONS Resistance to the inhibitory actions mediated by PGE2 could account, at least in part, for the inflammatory profile of circulating monocytes in PWH.
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Affiliation(s)
- Facundo Di Diego Garcia
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Gonzalo Cabrerizo
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Ana Paletta
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Paula S Prez
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Augusto Varese
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Jorge Geffner
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Natalia Bello
- Divisin Infectologa, Hospital de Clnicas Jos de San Martn, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Vanesa Fridman
- Divisin Infectologa, Hospital de Clnicas Jos de San Martn, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Daniel Stecher
- Divisin Infectologa, Hospital de Clnicas Jos de San Martn, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana Ceballos
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
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The role of PGE2 and EP receptors on lung's immune and structural cells; possibilities for future asthma therapy. Pharmacol Ther 2023; 241:108313. [PMID: 36427569 DOI: 10.1016/j.pharmthera.2022.108313] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 10/06/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022]
Abstract
Asthma is the most common airway chronic disease with treatments aimed mainly to control the symptoms. Adrenergic receptor agonists, corticosteroids and anti-leukotrienes have been used for decades, and the development of more targeted asthma treatments, known as biological therapies, were only recently established. However, due to the complexity of asthma and the limited efficacy as well as the side effects of available treatments, there is an urgent need for a new generation of asthma therapies. The anti-inflammatory and bronchodilatory effects of prostaglandin E2 in asthma are promising, yet complicated by undesirable side effects, such as cough and airway irritation. In this review, we summarize the most important literature on the role of all four E prostanoid (EP) receptors on the lung's immune and structural cells to further dissect the relevance of EP2/EP4 receptors as potential targets for future asthma therapy.
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In silico identification of a β 2-adrenoceptor allosteric site that selectively augments canonical β 2AR-Gs signaling and function. Proc Natl Acad Sci U S A 2022; 119:e2214024119. [PMID: 36449547 PMCID: PMC9894167 DOI: 10.1073/pnas.2214024119] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Activation of β2-adrenoceptors (β2ARs) causes airway smooth muscle (ASM) relaxation and bronchodilation, and β2AR agonists (β-agonists) are front-line treatments for asthma and other obstructive lung diseases. However, the therapeutic efficacy of β-agonists is limited by agonist-induced β2AR desensitization and noncanonical β2AR signaling involving β-arrestin that is shown to promote asthma pathophysiology. Accordingly, we undertook the identification of an allosteric site on β2AR that could modulate the activity of β-agonists to overcome these limitations. We employed the site identification by ligand competitive saturation (SILCS) computational method to comprehensively map the entire 3D structure of in silico-generated β2AR intermediate conformations and identified a putative allosteric binding site. Subsequent database screening using SILCS identified drug-like molecules with the potential to bind to the site. Experimental assays in HEK293 cells (expressing recombinant wild-type human β2AR) and human ASM cells (expressing endogenous β2AR) identified positive and negative allosteric modulators (PAMs and NAMs) of β2AR as assessed by regulation of β-agonist-stimulation of cyclic AMP generation. PAMs/NAMs had no effect on β-agonist-induced recruitment of β-arrestin to β2AR- or β-agonist-induced loss of cell surface expression in HEK293 cells expressing β2AR. Mutagenesis analysis of β2AR confirmed the SILCS identified site based on mutants of amino acids R131, Y219, and F282. Finally, functional studies revealed augmentation of β-agonist-induced relaxation of contracted human ASM cells and bronchodilation of contracted airways. These findings identify a allosteric binding site on the β2AR, whose activation selectively augments β-agonist-induced Gs signaling, and increases relaxation of ASM cells, the principal therapeutic effect of β-agonists.
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Wu X, Bos IST, Conlon TM, Ansari M, Verschut V, van der Koog L, Verkleij LA, D’Ambrosi A, Matveyenko A, Schiller HB, Königshoff M, Schmidt M, Kistemaker LEM, Yildirim AÖ, Gosens R. A transcriptomics-guided drug target discovery strategy identifies receptor ligands for lung regeneration. SCIENCE ADVANCES 2022; 8:eabj9949. [PMID: 35319981 PMCID: PMC8942365 DOI: 10.1126/sciadv.abj9949] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 12/15/2021] [Indexed: 05/05/2023]
Abstract
Currently, there is no pharmacological treatment targeting defective tissue repair in chronic disease. Here, we used a transcriptomics-guided drug target discovery strategy using gene signatures of smoking-associated chronic obstructive pulmonary disease (COPD) and from mice chronically exposed to cigarette smoke, identifying druggable targets expressed in alveolar epithelial progenitors, of which we screened the function in lung organoids. We found several drug targets with regenerative potential, of which EP and IP prostanoid receptor ligands had the most profound therapeutic potential in restoring cigarette smoke-induced defects in alveolar epithelial progenitors in vitro and in vivo. Mechanistically, we found, using single-cell RNA sequencing analysis, that circadian clock and cell cycle/apoptosis signaling pathways were differentially expressed in alveolar epithelial progenitor cells in patients with COPD and in a relevant model of COPD, which was prevented by prostaglandin E2 or prostacyclin mimetics. We conclude that specific targeting of EP and IP receptors offers therapeutic potential for injury to repair in COPD.
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Affiliation(s)
- Xinhui Wu
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - I. Sophie T. Bos
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Thomas M. Conlon
- Institute of Lung Biology and Disease (ILBD)/Comprehensive Pneumology Center (CPC), Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Meshal Ansari
- Institute of Lung Biology and Disease (ILBD)/Comprehensive Pneumology Center (CPC), Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Vicky Verschut
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Aquilo BV, Groningen, Netherlands
| | - Luke van der Koog
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Lars A. Verkleij
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Angela D’Ambrosi
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Aleksey Matveyenko
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Herbert B. Schiller
- Institute of Lung Biology and Disease (ILBD)/Comprehensive Pneumology Center (CPC), Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | | | - Martina Schmidt
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Loes E. M. Kistemaker
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Aquilo BV, Groningen, Netherlands
| | - Ali Önder Yildirim
- Institute of Lung Biology and Disease (ILBD)/Comprehensive Pneumology Center (CPC), Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Reinoud Gosens
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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Kim N, Shin S, Bae SW. cAMP Biosensors Based on Genetically Encoded Fluorescent/Luminescent Proteins. BIOSENSORS-BASEL 2021; 11:bios11020039. [PMID: 33572585 PMCID: PMC7911721 DOI: 10.3390/bios11020039] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/22/2021] [Accepted: 01/27/2021] [Indexed: 02/06/2023]
Abstract
Cyclic adenosine monophosphate (cAMP) plays a key role in signal transduction pathways as a second messenger. Studies on the cAMP dynamics provided useful scientific insights for drug development and treatment of cAMP-related diseases such as some cancers and prefrontal cortex disorders. For example, modulation of cAMP-mediated intracellular signaling pathways by anti-tumor drugs could reduce tumor growth. However, most early stage tools used for measuring the cAMP level in living organisms require cell disruption, which is not appropriate for live cell imaging or animal imaging. Thus, in the last decades, tools were developed for real-time monitoring of cAMP distribution or signaling dynamics in a non-invasive manner. Genetically-encoded sensors based on fluorescent proteins and luciferases could be powerful tools to overcome these drawbacks. In this review, we discuss the recent genetically-encoded cAMP sensors advances, based on single fluorescent protein (FP), Föster resonance energy transfer (FRET), single luciferase, and bioluminescence resonance energy transfer (BRET) for real-time non-invasive imaging.
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Affiliation(s)
- Namdoo Kim
- Department of Chemistry, Kongju National University, Gongju 32588, Korea;
| | - Seunghan Shin
- Green Chemistry & Materials Group, Korea Institute of Industrial Technology (KITECH), Cheonan 31056, Korea;
| | - Se Won Bae
- Green Chemistry & Materials Group, Korea Institute of Industrial Technology (KITECH), Cheonan 31056, Korea;
- Department of Chemistry and Cosmetics, Jeju National University, Jeju 63243, Korea
- Correspondence: ; Tel.: +82-64-754-3543
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Construction of a MicroRNA-mRNA Network Underlying Decidualized Endometriotic Cyst Stromal Cells Using Bioinformatics Analysis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:9246868. [PMID: 32923489 PMCID: PMC7453232 DOI: 10.1155/2020/9246868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 07/26/2020] [Accepted: 07/31/2020] [Indexed: 01/28/2023]
Abstract
Background Decidualization of ectopic endometrium often leads to the extensive proliferation of local tissue and is easily misdiagnosed as malignant tumors. The study is aimed at constructing a microRNA- (miRNA-) mRNA network underlying decidualized endometriotic cyst stromal cells (ECSCs). Methods All data were collected from the Gene Expression Omnibus (GEO) database. Firstly, the differentially expressed genes (DEGs, adj. P-Val < 0.05, | log FC | ≥1) and miRNAs (DEMs, P-Val < 0.05, ∣log FC | ≥1) were analyzed by the limma package. Secondly, we predicted the target genes (TGs) of these DEMs through the TargetScan, miRDB, and miRTarBase databases. The overlapping genes between DEGs and TGs were screened out. Thirdly, the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway and Gene Ontology (GO) enrichment analyses of the overlapping genes were performed for integrated discovery, visualization, and annotation. Then, the protein-protein interaction (PPI) network of the overlapping genes was conducted by the STRING database. Finally, we combined the PPI network and the miRNA-mRNA pairs to build a miRNA-mRNA network. Results There are 29 DEMs and 523 DEGs. Fourteen overlapping genes were screened out, and these genes were significantly enriched in metabolism and immunity. What is more, a miRNA-mRNA network, including 14 mRNAs and 9 miRNAs, was successfully constructed. Conclusions Taken together, the miRNA-mRNA regulatory networks described in this study may provide new insights in the decidualization of ECSCs, suggesting further investigations in novel pathogenic mechanisms.
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Schmidt M, Cattani-Cavalieri I, Nuñez FJ, Ostrom RS. Phosphodiesterase isoforms and cAMP compartments in the development of new therapies for obstructive pulmonary diseases. Curr Opin Pharmacol 2020; 51:34-42. [PMID: 32622335 DOI: 10.1016/j.coph.2020.05.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/17/2020] [Accepted: 05/22/2020] [Indexed: 12/20/2022]
Abstract
The second messenger molecule 3'5'-cyclic adenosine monophosphate (cAMP) imparts several beneficial effects in lung diseases such as asthma, chronic obstructive pulmonary disease (COPD) and idiopathic pulmonary fibrosis (IPF). While cAMP is bronchodilatory in asthma and COPD, it also displays anti-fibrotic properties that limit fibrosis. Phosphodiesterases (PDEs) metabolize cAMP and thus regulate cAMP signaling. While some existing therapies inhibit PDEs, there are only broad family specific inhibitors. The understanding of cAMP signaling compartments, some centered around lipid rafts/caveolae, has led to interest in defining how specific PDE isoforms maintain these signaling microdomains. The possible altered expression of PDEs, and thus abnormal cAMP signaling, in obstructive lung diseases has been poorly explored. We propose that inhibition of specific PDE isoforms can improve therapy of obstructive lung diseases by amplifying specific cAMP signals in discreet microdomains.
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Affiliation(s)
- Martina Schmidt
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands; University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, GRIAC, Groningen, The Netherlands
| | - Isabella Cattani-Cavalieri
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands; University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, GRIAC, Groningen, The Netherlands; Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Francisco J Nuñez
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, CA, USA
| | - Rennolds S Ostrom
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, CA, USA.
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