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Sayour NV, Tóth VÉ, Nagy RN, Vörös I, Gergely TG, Onódi Z, Nagy N, Bödör C, Váradi B, Ruppert M, Radovits T, Bleckwedel F, Zelarayán LC, Pacher P, Ágg B, Görbe A, Ferdinandy P, Varga ZV. Droplet Digital PCR Is a Novel Screening Method Identifying Potential Cardiac G-Protein-Coupled Receptors as Candidate Pharmacological Targets in a Rat Model of Pressure-Overload-Induced Cardiac Dysfunction. Int J Mol Sci 2023; 24:13826. [PMID: 37762130 PMCID: PMC10531061 DOI: 10.3390/ijms241813826] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/31/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
The identification of novel drug targets is needed to improve the outcomes of heart failure (HF). G-protein-coupled receptors (GPCRs) represent the largest family of targets for already approved drugs, thus providing an opportunity for drug repurposing. Here, we aimed (i) to investigate the differential expressions of 288 cardiac GPCRs via droplet digital PCR (ddPCR) and bulk RNA sequencing (RNAseq) in a rat model of left ventricular pressure-overload; (ii) to compare RNAseq findings with those of ddPCR; and (iii) to screen and test for novel, translatable GPCR drug targets in HF. Male Wistar rats subjected to transverse aortic constriction (TAC, n = 5) showed significant systolic dysfunction vs. sham operated animals (SHAM, n = 5) via echocardiography. In TAC vs. SHAM hearts, RNAseq identified 69, and ddPCR identified 27 significantly differentially expressed GPCR mRNAs, 8 of which were identified using both methods, thus showing a correlation between the two methods. Of these, Prostaglandin-F2α-receptor (Ptgfr) was further investigated and localized on cardiomyocytes and fibroblasts in murine hearts via RNA-Scope. Antagonizing Ptgfr via AL-8810 reverted angiotensin-II-induced cardiomyocyte hypertrophy in vitro. In conclusion, using ddPCR as a novel screening method, we were able to identify GPCR targets in HF. We also show that the antagonism of Ptgfr could be a novel target in HF by alleviating cardiomyocyte hypertrophy.
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Affiliation(s)
- Nabil V. Sayour
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- HCEMM-SU Cardiometabolic Immunology Research Group, 1085 Budapest, Hungary
- MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Semmelweis University, 1085 Budapest, Hungary
| | - Viktória É. Tóth
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- HCEMM-SU Cardiometabolic Immunology Research Group, 1085 Budapest, Hungary
- MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Semmelweis University, 1085 Budapest, Hungary
| | - Regina N. Nagy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
| | - Imre Vörös
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- HCEMM-SU Cardiometabolic Immunology Research Group, 1085 Budapest, Hungary
- MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Semmelweis University, 1085 Budapest, Hungary
| | - Tamás G. Gergely
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- HCEMM-SU Cardiometabolic Immunology Research Group, 1085 Budapest, Hungary
- MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Semmelweis University, 1085 Budapest, Hungary
| | - Zsófia Onódi
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- HCEMM-SU Cardiometabolic Immunology Research Group, 1085 Budapest, Hungary
- MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Semmelweis University, 1085 Budapest, Hungary
| | - Noémi Nagy
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, 1085 Budapest, Hungary
| | - Csaba Bödör
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, 1085 Budapest, Hungary
| | - Barnabás Váradi
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- HCEMM-SU Cardiometabolic Immunology Research Group, 1085 Budapest, Hungary
| | - Mihály Ruppert
- Heart and Vascular Center, Semmelweis University, 1085 Budapest, Hungary
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, 1085 Budapest, Hungary
| | - Federico Bleckwedel
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen (UMG), 37075 Göttingen, Germany
- German Center for Cardiovascular Research (DZHK) Partner Site, 37075 Goettingen, Germany
| | - Laura C. Zelarayán
- Institute of Pharmacology and Toxicology, University Medical Center Goettingen (UMG), 37075 Göttingen, Germany
- German Center for Cardiovascular Research (DZHK) Partner Site, 37075 Goettingen, Germany
| | - Pal Pacher
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institute of Health, Rockville, MD 20852, USA
| | - Bence Ágg
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary
- Pharmahungary Group, 6720 Szeged, Hungary
| | - Anikó Görbe
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- Pharmahungary Group, 6720 Szeged, Hungary
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary
- Pharmahungary Group, 6720 Szeged, Hungary
| | - Zoltán V. Varga
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1085 Budapest, Hungary; (N.V.S.)
- HCEMM-SU Cardiometabolic Immunology Research Group, 1085 Budapest, Hungary
- MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Semmelweis University, 1085 Budapest, Hungary
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Sedki D, Cho A, Cao Y, Nikolajev L, Atmuri NDP, Lubell WD, Laporte SA. Prostaglandin F2α and angiotensin II type 1 receptors exhibit differential cognate G protein coupling regulation. J Biol Chem 2022; 298:102294. [PMID: 35872018 PMCID: PMC9418914 DOI: 10.1016/j.jbc.2022.102294] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 11/21/2022] Open
Abstract
Promiscuous G protein–coupled receptors (GPCRs) engage multiple Gα subtypes with different efficacies to propagate signals in cells. A mechanistic understanding of Gα selectivity by GPCRs is critical for therapeutic design, since signaling can be restrained by ligand–receptor complexes to preferentially engage specific G proteins. However, details of GPCR selectivity are unresolved. Here, we investigated cognate G protein selectivity using the prototypical promiscuous Gαq/11 and Gα12/13 coupling receptors, angiotensin II type I receptor (AT1R) and prostaglandin F2α receptor (FP), bioluminescence resonance energy transfer–based G protein and pathway-selective sensors, and G protein knockout cells. We determined that competition between G proteins for receptor binding occurred in a receptor- and G protein–specific manner for AT1R and FP but not for other receptors tested. In addition, we show that while Gα12/13 competes with Gαq/11 for AT1R coupling, the opposite occurs for FP, and Gαq-mediated signaling regulated G protein coupling only at AT1R. In cells, the functional modulation of biased ligands at FP and AT1R was contingent upon cognate Gα availability. The efficacy of AT1R-biased ligands, which poorly signal through Gαq/11, increased in the absence of Gα12/13. Finally, we show that a positive allosteric modulator of Gαq/11 signaling that also allosterically decreases FP–Gα12/13 coupling, lost its negative modulation in the absence of Gαq/11 coupling to FP. Together, our findings suggest that despite preferential binding of similar subsets of G proteins, GPCRs follow distinct selectivity rules, which may contribute to the regulation of ligand-mediated G protein bias of AT1R and FP.
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Affiliation(s)
- Dana Sedki
- Department of Medicine, Research Institute of the McGill University Health Center, McGill University, Montréal, Québec H4A 3J1, Canada
| | - Aaron Cho
- Department of Medicine, Research Institute of the McGill University Health Center, McGill University, Montréal, Québec H4A 3J1, Canada
| | - Yubo Cao
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6, Canada
| | - Ljiljana Nikolajev
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6, Canada
| | - N D Prasad Atmuri
- Department of Chemistry, University of Montréal, Montréal, Québec H3A 0B8, Canada
| | - William D Lubell
- Department of Chemistry, University of Montréal, Montréal, Québec H3A 0B8, Canada
| | - Stéphane A Laporte
- Department of Medicine, Research Institute of the McGill University Health Center, McGill University, Montréal, Québec H4A 3J1, Canada; Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6, Canada.
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Katsumata Y, Shinmura K, Sugiura Y, Tohyama S, Matsuhashi T, Ito H, Yan X, Ito K, Yuasa S, Ieda M, Urade Y, Suematsu M, Fukuda K, Sano M. Endogenous prostaglandin D2 and its metabolites protect the heart against ischemia-reperfusion injury by activating Nrf2. Hypertension 2013; 63:80-7. [PMID: 24101662 DOI: 10.1161/hypertensionaha.113.01639] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We recently demonstrated that glucocorticoids markedly upregulate the expression of cyclooxygenase-2 in cardiomyocytes and protect hearts from ischemia-reperfusion (I/R) injury by activating lipocalin-type prostaglandin D (PGD) synthase (L-PGDS)-derived PGD(2) biosynthesis. We examined a downstream mechanism of cardioprotection elicited by PGD(2) biosynthesis. Acute PGD(2) treatment did not protect hearts against I/R injury. We then speculated that PGD(2) and its metabolite 15-deoxy-Δ12,14-PGJ(2) activate gene expression networks to mediate the glucocorticoid-mediated cardioprotection. Using an unbiased approach, we identified that glucocorticoids induce a number of well-known erythroid-derived 2-like 2 (Nrf2) target genes in the heart in an L-PGDS-dependent manner and that the cardioprotective effect of glucocorticoids against I/R injury was not seen in Nrf2-knockout hearts. We showed relatively low expression of PGD(2) receptors (ie, DP1 and DP2) in the heart but abundant expression of PGF(2α) receptor (FP), which binds PGF(2α) and PGD(2) with equal affinity. Glucocorticoids also failed to induce the expression of L-PGDS-dependent Nrf2 target genes in FP-knockout hearts. PGD(2) acted through its metabolite 15-deoxy-Δ12,14-PGJ(2) in the heart as evidenced by the glucocorticoid-mediated activation of peroxisome proliferator-activated receptor-γ. In turn, glucocorticoids failed to induce the expression of L-PGDS-dependent Nrf2 target genes in hearts pretreated with peroxisome proliferator-activated receptor-γ antagonist GW9662, and glucocorticoid-mediated cardioprotection against I/R injury was compromised in FP-knockout mice and GW9662-treated mice. In conclusion, PGD(2) protects heart against I/R injury by activating Nrf2 predominantly via FP receptor. In addition, we propose activation of peroxisome proliferator-activated receptor-γ by the dehydrated metabolite of PGD(2) (15-deoxy-Δ12,14-PGJ(2)) as another mechanism by which glucocorticoids induce cardioprotection.
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Affiliation(s)
- Yoshinori Katsumata
- Department of Cardiology, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo 160-8582, Japan.
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