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Seibel-Ehlert U, Plank N, Inoue A, Bernhardt G, Strasser A. Label-Free Investigations on the G Protein Dependent Signaling Pathways of Histamine Receptors. Int J Mol Sci 2021; 22:9739. [PMID: 34575903 PMCID: PMC8467282 DOI: 10.3390/ijms22189739] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/03/2021] [Accepted: 09/06/2021] [Indexed: 01/14/2023] Open
Abstract
G protein activation represents an early key event in the complex GPCR signal transduction process and is usually studied by label-dependent methods targeting specific molecular events. However, the constrained environment of such "invasive" techniques could interfere with biological processes. Although histamine receptors (HRs) represent (evolving) drug targets, their signal transduction is not fully understood. To address this issue, we established a non-invasive dynamic mass redistribution (DMR) assay for the human H1-4Rs expressed in HEK cells, showing excellent signal-to-background ratios above 100 for histamine (HIS) and higher than 24 for inverse agonists with pEC50 values consistent with literature. Taking advantage of the integrative nature of the DMR assay, the involvement of endogenous Gαq/11, Gαs, Gα12/13 and Gβγ proteins was explored, pursuing a two-pronged approach, namely that of classical pharmacology (G protein modulators) and that of molecular biology (Gα knock-out HEK cells). We showed that signal transduction of hH1-4Rs occurred mainly, but not exclusively, via their canonical Gα proteins. For example, in addition to Gαi/o, the Gαq/11 protein was proven to contribute to the DMR response of hH3,4Rs. Moreover, the Gα12/13 was identified to be involved in the hH2R mediated signaling pathway. These results are considered as a basis for future investigations on the (patho)physiological role and the pharmacological potential of H1-4Rs.
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Affiliation(s)
- Ulla Seibel-Ehlert
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany; (N.P.); (G.B.)
| | - Nicole Plank
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany; (N.P.); (G.B.)
| | - Asuka Inoue
- Department of Pharmacological Sciences, Tohoku University, Sendai 980-8578, Japan;
| | - Guenther Bernhardt
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany; (N.P.); (G.B.)
| | - Andrea Strasser
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany; (N.P.); (G.B.)
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Tanner MA, Thomas TP, Maitz CA, Grisanti LA. β2-Adrenergic Receptors Increase Cardiac Fibroblast Proliferation Through the Gαs/ERK1/2-Dependent Secretion of Interleukin-6. Int J Mol Sci 2020; 21:ijms21228507. [PMID: 33198112 PMCID: PMC7697911 DOI: 10.3390/ijms21228507] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/04/2020] [Accepted: 11/10/2020] [Indexed: 12/18/2022] Open
Abstract
Fibroblasts are an important resident cell population in the heart involved in maintaining homeostasis and structure during normal conditions. They are also crucial in disease states for sensing signals and initiating the appropriate repair responses to maintain the structural integrity of the heart. This sentinel role of cardiac fibroblasts occurs, in part, through their ability to secrete cytokines. β-adrenergic receptors (βAR) are also critical regulators of cardiac function in the normal and diseased state and a major therapeutic target clinically. βAR are known to influence cytokine secretion in various cell types and they have been shown to be involved in cytokine production in the heart, but their role in regulating cytokine production in cardiac fibroblasts is not well understood. Thus, we hypothesized that βAR activation on cardiac fibroblasts modulates cytokine production to influence fibroblast function. Using primary fibroblast cultures from neonatal rats and adult mice, increased interleukin (IL)-6 expression and secretion occurred following β2AR activation. The use of pharmacological inhibitors and genetic manipulations showed that IL-6 elevations occurred through the Gαs-mediated activation of ERK1/2 and resulted in increased fibroblast proliferation. In vivo, a lack of β2AR resulted in increased infarct size following myocardial infarction and impaired wound closure in a murine dermal wound healing assay. These findings identify an important role for β2AR in regulating fibroblast proliferation through Gαs/ERK1/2-dependent alterations in IL-6 and may lead to the development of improved heart failure therapies through targeting fibrotic function of β2AR.
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Affiliation(s)
- Miles A. Tanner
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
| | - Toby P. Thomas
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
| | - Charles A. Maitz
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA;
| | - Laurel A. Grisanti
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
- Correspondence: ; Tel.: +573-884-8852
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Finetti L, Ferrari F, Caló G, Cassanelli S, De Bastiani M, Civolani S, Bernacchia G. Modulation of Drosophila suzukii type 1 tyramine receptor (DsTAR1) by monoterpenes: a potential new target for next generation biopesticides. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 165:104549. [PMID: 32359540 DOI: 10.1016/j.pestbp.2020.02.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 02/21/2020] [Accepted: 02/22/2020] [Indexed: 06/11/2023]
Abstract
This study proposes a biochemical and molecular model for the interaction between the Drosophila suzukii type 1 tyramine receptor (DsTAR1) and monoterpenes. A preliminary molecular and functional characterization of DsTAR1 cDNA revealed that a 1.8 kb long ORF codes for a 600 amino acid polypeptide featuring seven transmembrane domains, as expected for a GPCR. A stable HEK 293 cell line expressing DsTAR1 was tested for responsiveness to tyramine (TA) and octopamine (OA). In intracellular calcium mobilization studies, TA led to a concentration-dependent increase in [Ca2+]i (pEC50 ~ 6.40), completely abolished by pre-incubation with the antagonist yohimbine 1 μM. Besides, in dynamic mass redistribution (DMR) studies, TA evoked a positive DMR signal in a concentration-dependent manner (pEC50 ~ 6.80). The recombinant cell line was then used to test three monoterpenes (thymol, carvacrol and α-terpineol) as putative ligands for DsTAR1. The terpenoids showed no agonist effects in both DMR and calcium mobilization assays, but they increased the potency of the endogenous ligand, TA, acting as positive allosteric modulators. Moreover, expression analysis on adults D. suzukii, exposed for 24, 72 or 120 h to a sublethal concentration of the three monoterpenes, showed a downregulation of DsTAR1. This evidence has led to hypothesize that the downregulation of DsTAR1 might be a compensatory mechanism in response to the positive allosteric modulation of the receptor induced by monoterpenes. Therefore, these findings might be useful for the development of a new generation of biopesticides against Drosophila suzukii, targeting TAR1.
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Affiliation(s)
- Luca Finetti
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Federica Ferrari
- Department of Medical Sciences, Section of Pharmacology, University of Ferrara, Ferrara, Italy
| | - Girolamo Caló
- Department of Medical Sciences, Section of Pharmacology, University of Ferrara, Ferrara, Italy
| | - Stefano Cassanelli
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Morena De Bastiani
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Stefano Civolani
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy; InnovaRicerca s.r.l. Monestirolo, Ferrara, Italy
| | - Giovanni Bernacchia
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy.
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Jørgensen CV, Zhou H, Seibel MJ, Bräuner-Osborne H. Label-free dynamic mass redistribution analysis of endogenous adrenergic receptor signaling in primary preadipocytes and differentiated adipocytes. J Pharmacol Toxicol Methods 2019; 97:59-66. [PMID: 30946893 DOI: 10.1016/j.vascn.2019.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/27/2019] [Accepted: 03/29/2019] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Adipose tissues release adipokines, which regulate energy intake and expenditure. G protein-coupled receptors (GPCRs) and associated signaling pathways in adipocytes are potentially important drug targets for conditions with disturbed energy metabolism. METHODS The aim of the current study was to compare signaling of endogenously expressed GPCRs between primary preadipocytes and differentiated adipocytes using a novel state-of-the-art unbiased method that measures dynamic mass redistribution (DMR) in real-time. Adrenergic agonists were chosen since they control adipocyte functions such as lipolysis and glycogenolysis. RESULTS Isoprenaline (ISO) and phenylephrine (PE) elicited concentration-dependent responses in preadipocytes and differentiated adipocytes. The effect of ISO was cholera toxin (CTX)-sensitive, indicating it is Gs-dependent. The effect could also be blocked by propranolol proving the signal is mediated through β-adrenergic receptors. The signaling resulting from PE stimulation was completely abolished by the Gq/11-selective inhibitor FR900359 and CTX in preadipocytes but surprisingly became FR900359-insensitive but remained CTX-sensitive in differentiated adipocytes. The use of prazosin and propranolol revealed that the PE-response in differentiated adipocytes had a β-adrenergic receptor component to it. In addition, we tested the bone-derived peptide osteocalcin, which did not result in DMR changes in preadipocytes or differentiated adipocytes. DISCUSSION In conclusion, this study for the first time demonstrates that DMR assays can be used to assess signaling in differentiated adipocytes. This platform can serve as a tool for future drug screening in primary adipocytes. Furthermore, this study illustrates that PE-induced effects on adipocytes vary by developmental stage and are not as selective as originally thought.
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Affiliation(s)
- Christinna V Jørgensen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Hong Zhou
- Bone Research Program, ANZAC Research Institute, University of Sydney, Australia
| | - Markus J Seibel
- Bone Research Program, ANZAC Research Institute, University of Sydney, Australia
| | - Hans Bräuner-Osborne
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
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Ruzza C, Ferrari F, Guerrini R, Marzola E, Preti D, Reinscheid RK, Calo G. Pharmacological profile of the neuropeptide S receptor: Dynamic mass redistribution studies. Pharmacol Res Perspect 2018; 6:e00445. [PMID: 30534379 PMCID: PMC6277375 DOI: 10.1002/prp2.445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 12/19/2022] Open
Abstract
Neuropeptide S (NPS) is the endogenous ligand of the neuropeptide S receptor (NPSR). NPS modulates several biological functions including anxiety, wakefulness, pain, and drug abuse. The aim of this study was the investigation of the pharmacological profile of NPSR using the dynamic mass redistribution (DMR) assay. DMR is a label-free assay that offers a holistic view of cellular responses after receptor activation. HEK293 cells stably transfected with the murine NPSR (HEK293mNPSR) have been used. To investigate the nature of the NPS-evoked DMR signaling, FR900359 (Gq inhibitor), pertussis toxin (Gi inhibitor), and rolipram (phosphodiesterase inhibitor) were used. To determine the pharmacology of NPSR, several selective ligands (agonists, partial agonists, antagonists) have been tested. NPS, through selective NPSR activation, evoked a robust DMR signal with potency in the nanomolar range. This signal was predominantly, but not completely, blocked by FR900359, suggesting the involvement of the Gq-dependent signaling cascade. NPSR ligands (agonists and antagonists) displayed potency values in DMR experiments similar, but not identical, to those reported in the literature. Furthermore, partial agonists produced a higher efficacy in DMR than in calcium experiments. DMR can be successfully used to study the pharmacology and signaling properties of novel NPSR ligands. This innovative approach will likely increase the translational value of in vitro pharmacological studies.
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Affiliation(s)
- Chiara Ruzza
- Department of Medical SciencesSection of PharmacologyNational Institute of NeuroscienceUniversity of FerraraFerraraItaly
| | - Federica Ferrari
- Department of Medical SciencesSection of PharmacologyNational Institute of NeuroscienceUniversity of FerraraFerraraItaly
| | - Remo Guerrini
- Department of Chemical and Pharmaceutical Sciences and LTTAUniversity of FerraraFerraraItaly
| | - Erika Marzola
- Department of Chemical and Pharmaceutical Sciences and LTTAUniversity of FerraraFerraraItaly
| | - Delia Preti
- Department of Chemical and Pharmaceutical Sciences and LTTAUniversity of FerraraFerraraItaly
| | - Rainer K. Reinscheid
- Institute of Pharmacology and ToxicologyJena University HospitalFriedrich Schiller University JenaJenaGermany
- Institute of Physiology IUniversity Hospital MünsterUniversity of MünsterMünsterGermany
| | - Girolamo Calo
- Department of Medical SciencesSection of PharmacologyNational Institute of NeuroscienceUniversity of FerraraFerraraItaly
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Krebs K, Pfeil EM, Simon K, Grundmann M, Häberlein F, Bautista-Aguilera OM, Gütschow M, Weaver CD, Fleischmann BK, Kostenis E. Label-Free Whole Cell Biosensing for High-Throughput Discovery of Activators and Inhibitors Targeting G Protein-Activated Inwardly Rectifying Potassium Channels. ACS OMEGA 2018; 3:14814-14823. [PMID: 30555990 PMCID: PMC6289404 DOI: 10.1021/acsomega.8b02254] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 10/22/2018] [Indexed: 06/09/2023]
Abstract
Dynamic mass redistribution (DMR) and cellular dielectric spectroscopy (CDS) are label-free biosensor technologies that capture real-time integrated cellular responses upon exposure to extra- and intracellular stimuli. They register signaling routes that are accompanied by cell shape changes and/or molecular movement of cells proximal to the biosensor to which they are attached. Here, we report the unexpected observation that robust DMR and CDS signatures are also elicited upon direct stimulation of G protein-activated inwardly rectifying potassium (GIRK) channels, which are involved in the regulation of excitability in the heart and brain. Using ML297, a small-molecule GIRK activator, along with channel blockers and cytoskeletal network inhibitors, we found that GIRK activation exerts its effects on cell shape by a mechanism which depends on actin but not the microtubule network. Because label-free real-time biosensing (i) quantitatively determines concentration dependency of GIRK activators, (ii) accurately assesses the impact of GIRK channel blockers, (iii) is high throughput-compatible, and (iv) visualizes previously unknown cellular consequences downstream of direct GIRK activation, we do not only provide a novel experimental strategy for identification of GIRK ligands but also an entirely new angle to probe GIRK (ligand) biology. We envision that DMR and CDS may add to the repertoire of technologies for systematic exploitation of ion channel function and, in turn, to the identification of novel GIRK ligands in order to treat cardiovascular and neurological disorders.
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Affiliation(s)
- Katrin
M. Krebs
- Molecular,
Cellular and Pharmacobiology Section, Institute for Pharmaceutical
Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
- Research
Training Group 1873, University of Bonn, Bonn, Germany
| | - Eva M. Pfeil
- Molecular,
Cellular and Pharmacobiology Section, Institute for Pharmaceutical
Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
- Research
Training Group 1873, University of Bonn, Bonn, Germany
| | - Katharina Simon
- Molecular,
Cellular and Pharmacobiology Section, Institute for Pharmaceutical
Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
| | - Manuel Grundmann
- Molecular,
Cellular and Pharmacobiology Section, Institute for Pharmaceutical
Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
| | - Felix Häberlein
- Molecular,
Cellular and Pharmacobiology Section, Institute for Pharmaceutical
Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
| | - Oscar M. Bautista-Aguilera
- Pharmaceutical
Chemistry I, Institute of Pharmacy, University
of Bonn, An der Immenburg
4, 53121 Bonn, Germany
| | - Michael Gütschow
- Pharmaceutical
Chemistry I, Institute of Pharmacy, University
of Bonn, An der Immenburg
4, 53121 Bonn, Germany
| | - C. David Weaver
- Vanderbilt
Institute of Chemical Biology, Department of Pharmacology and Department
of Chemistry, Vanderbilt University, Nashville, 37232 Tennessee, United States
| | - Bernd K. Fleischmann
- Institute
of Physiology I, Life and Brain Center, Medical Faculty, University of Bonn, Sigmund-Freud-Straße 25, 53105 Bonn, Germany
| | - Evi Kostenis
- Molecular,
Cellular and Pharmacobiology Section, Institute for Pharmaceutical
Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
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Malfacini D, Simon K, Trapella C, Guerrini R, Zaveri NT, Kostenis E, Calo’ G. NOP receptor pharmacological profile - A dynamic mass redistribution study. PLoS One 2018; 13:e0203021. [PMID: 30161182 PMCID: PMC6117024 DOI: 10.1371/journal.pone.0203021] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 08/14/2018] [Indexed: 12/12/2022] Open
Abstract
The Nociceptin/Orphanin FQ (N/OFQ) peptide NOP receptor is coupled to pertussis toxin (PTX)-sensitive G proteins (Gi/o) whose activation leads to the inhibition of both cAMP production and calcium channel activity, and to the stimulation of potassium currents. The label free dynamic mass redistribution (DMR) approach has been demonstrated useful for investigating the pharmacological profile of G protein-coupled receptors. Herein, we employ DMR technology to systematically characterize the pharmacology of a large panel of NOP receptor ligands. These are of peptide and non-peptide nature and display varying degrees of receptor efficacy, ranging from full agonism to pure antagonism. Using Chinese hamster ovary (CHO) cells expressing the human NOP receptor we provide rank orders of potency for full and partial agonists as well as apparent affinities for selective antagonists. We find the pharmacological profile of NOP receptor ligands to be similar but not identical to values reported in the literature using canonical assays for Gi/o-coupled receptors. Our data demonstrate that holistic label-free DMR detection can be successfully used to investigate the pharmacology of the NOP receptor and to characterize the cellular effects of novel NOP receptor ligands.
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Affiliation(s)
- Davide Malfacini
- Molecular, Cellular and Pharmacobiology Section, Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
- Section of Pharmacology, Department of Medical Sciences, and National Institute of Neurosciences, University of Ferrara, Ferrara, Italy
- * E-mail:
| | - Katharina Simon
- Molecular, Cellular and Pharmacobiology Section, Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Claudio Trapella
- Department of Chemical and Pharmaceutical Sciences and LTTA, University of Ferrara, Ferrara, Italy
| | - Remo Guerrini
- Department of Chemical and Pharmaceutical Sciences and LTTA, University of Ferrara, Ferrara, Italy
| | | | - Evi Kostenis
- Molecular, Cellular and Pharmacobiology Section, Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Girolamo Calo’
- Section of Pharmacology, Department of Medical Sciences, and National Institute of Neurosciences, University of Ferrara, Ferrara, Italy
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Christensen HB, Gloriam DE, Pedersen DS, Cowland JB, Borregaard N, Bräuner-Osborne H. Applying label-free dynamic mass redistribution assay for studying endogenous FPR1 receptor signalling in human neutrophils. J Pharmacol Toxicol Methods 2017; 88:72-78. [PMID: 28716665 DOI: 10.1016/j.vascn.2017.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 06/02/2017] [Accepted: 07/13/2017] [Indexed: 11/18/2022]
Abstract
INTRODUCTION The label-free dynamic mass redistribution-based assay (DMR) is a powerful method for studying signalling pathways of G protein-coupled receptors (GPCRs). Herein we present the label-free DMR assay as a robust readout for pharmacological characterization of formyl peptide receptors (FPRs) in human neutrophils. METHODS Neutrophils were isolated from fresh human blood and their responses to FPR1 and FPR2 agonists, i.e. compound 43, fMLF and WKYMVm were measured in a label-free DMR assay using Epic Benchtop System from Corning®. Obtained DMR traces were used to calculate agonist potencies. RESULTS The potencies (pEC50) of fMLF, WKYMVm and compound 43, determined on human neutrophils using the label-free DMR assay were 8.63, 7.76 and 5.92, respectively. The DMR response to fMLF, but not WKYMVm and compound 43 could be blocked by the FPR1-specific antagonist cyclosporin H. DISCUSSION We conclude that the DMR assay can be used, and complements more traditional methods, to study the signalling and pharmacology of endogenous FPR receptors in human neutrophils.
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Affiliation(s)
- Hanna B Christensen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
| | - David E Gloriam
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
| | - Daniel Sejer Pedersen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
| | - Jack B Cowland
- Granulocyte Research Laboratory, Department of Hematology, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark.
| | - Niels Borregaard
- Granulocyte Research Laboratory, Department of Hematology, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Hans Bräuner-Osborne
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
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Inhibition of lectin-like oxidized low-density lipoprotein receptor-1 reduces cardiac fibroblast proliferation by suppressing GATA Binding Protein 4. Biochem Biophys Res Commun 2016; 475:329-34. [DOI: 10.1016/j.bbrc.2016.05.095] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 05/19/2016] [Indexed: 11/21/2022]
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10
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Talman V, Ruskoaho H. Cardiac fibrosis in myocardial infarction-from repair and remodeling to regeneration. Cell Tissue Res 2016; 365:563-81. [PMID: 27324127 PMCID: PMC5010608 DOI: 10.1007/s00441-016-2431-9] [Citation(s) in RCA: 511] [Impact Index Per Article: 63.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/07/2016] [Indexed: 12/11/2022]
Abstract
Ischemic cell death during a myocardial infarction leads to a multiphase reparative response in which the damaged tissue is replaced with a fibrotic scar produced by fibroblasts and myofibroblasts. This also induces geometrical, biomechanical, and biochemical changes in the uninjured ventricular wall eliciting a reactive remodeling process that includes interstitial and perivascular fibrosis. Although the initial reparative fibrosis is crucial for preventing rupture of the ventricular wall, an exaggerated fibrotic response and reactive fibrosis outside the injured area are detrimental as they lead to progressive impairment of cardiac function and eventually to heart failure. In this review, we summarize current knowledge of the mechanisms of both reparative and reactive cardiac fibrosis in response to myocardial infarction, discuss the potential of inducing cardiac regeneration through direct reprogramming of fibroblasts and myofibroblasts into cardiomyocytes, and review the currently available and potential future therapeutic strategies to inhibit cardiac fibrosis. Graphical abstract Reparative response following a myocardial infarction. Hypoxia-induced cardiomyocyte death leads to the activation of myofibroblasts and a reparative fibrotic response in the injured area. Right top In adult mammals, the fibrotic scar formed at the infarcted area is permanent and promotes reactive fibrosis in the uninjured myocardium. Right bottom In teleost fish and newts and in embryonic and neonatal mammals, the initial formation of a fibrotic scar is followed by regeneration of the cardiac muscle tissue. Induction of post-infarction cardiac regeneration in adult mammals is currently the target of intensive research and drug discovery attempts.
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Affiliation(s)
- Virpi Talman
- Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, FI-00014, Helsinki, Finland.
| | - Heikki Ruskoaho
- Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, FI-00014, Helsinki, Finland
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Fang Y. Combining label-free cell phenotypic profiling with computational approaches for novel drug discovery. Expert Opin Drug Discov 2015; 10:331-43. [DOI: 10.1517/17460441.2015.1020788] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ye Fang
- Corning Inc., Biochemical Technologies, Science and Technology Division, Corning, NY 14831, USA
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12
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Multiplexing Label-Free and Fluorescence-Based Methods for Pharmacological Characterization of GPCR Ligands. METHODS IN PHARMACOLOGY AND TOXICOLOGY 2015. [DOI: 10.1007/978-1-4939-2617-6_12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Label-Free Profiling of Endogenous Receptor Responses in Primary Isolated Cardiac Cells. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/978-1-4939-2617-6_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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14
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Talarico JA, Carter RL, Grisanti LA, Yu JE, Repas AA, Tilley DG. β-adrenergic receptor-dependent alterations in murine cardiac transcript expression are differentially regulated by gefitinib in vivo. PLoS One 2014; 9:e99195. [PMID: 24901703 PMCID: PMC4047088 DOI: 10.1371/journal.pone.0099195] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/12/2014] [Indexed: 11/18/2022] Open
Abstract
β-adrenergic receptor (βAR)-mediated transactivation of epidermal growth factor receptor (EGFR) has been shown to promote cardioprotection in a mouse model of heart failure and we recently showed that this mechanism leads to enhanced cell survival in part via regulation of apoptotic transcript expression in isolated primary rat neonatal cardiomyocytes. Thus, we hypothesized that this process could regulate cardiac transcript expression in vivo. To comprehensively assess cardiac transcript alterations in response to acute βAR-dependent EGFR transactivation, we performed whole transcriptome analysis of hearts from C57BL/6 mice given i.p. injections of the βAR agonist isoproterenol in the presence or absence of the EGFR antagonist gefitinib for 1 hour. Total cardiac RNA from each treatment group underwent transcriptome analysis, revealing a substantial number of transcripts regulated by each treatment. Gefitinib alone significantly altered the expression of 405 transcripts, while isoproterenol either alone or in conjunction with gefitinib significantly altered 493 and 698 distinct transcripts, respectively. Further statistical analysis was performed, confirming 473 transcripts whose regulation by isoproterenol were significantly altered by gefitinib (isoproterenol-induced up/downregulation antagonized/promoted by gefinitib), including several known to be involved in the regulation of numerous processes including cell death and survival. Thus, βAR-dependent regulation of cardiac transcript expression in vivo can be modulated by the EGFR antagonist gefitinib.
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Affiliation(s)
- Jennifer A. Talarico
- Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Rhonda L. Carter
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Laurel A. Grisanti
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Justine E. Yu
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Ashley A. Repas
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Douglas G. Tilley
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania, United States of America
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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