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Lee H, Amatya B, Villar VAM, Asico LD, Jeong JK, Feranil J, Moore SC, Zheng X, Bishop M, Gomes JP, Polzin J, Smeriglio N, de Castro PASV, Armando I, Felder RA, Hao L, Jose PA. Renal autocrine neuropeptide FF (NPFF) signaling regulates blood pressure. Sci Rep 2024; 14:15407. [PMID: 38965251 PMCID: PMC11224344 DOI: 10.1038/s41598-024-64484-9] [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: 09/17/2022] [Accepted: 06/10/2024] [Indexed: 07/06/2024] Open
Abstract
The kidney and brain play critical roles in the regulation of blood pressure. Neuropeptide FF (NPFF), originally isolated from the bovine brain, has been suggested to contribute to the pathogenesis of hypertension. However, the roles of NPFF and its receptors, NPFF-R1 and NPFF-R2, in the regulation of blood pressure, via the kidney, are not known. In this study, we found that the transcripts and proteins of NPFF and its receptors, NPFF-R1 and NPFF-R2, were expressed in mouse and human renal proximal tubules (RPTs). In mouse RPT cells (RPTCs), NPFF, but not RF-amide-related peptide-2 (RFRP-2), decreased the forskolin-stimulated cAMP production in a concentration- and time-dependent manner. Furthermore, dopamine D1-like receptors colocalized and co-immunoprecipitated with NPFF-R1 and NPFF-R2 in human RPTCs. The increase in cAMP production in human RPTCs caused by fenoldopam, a D1-like receptor agonist, was attenuated by NPFF, indicating an antagonistic interaction between NPFF and D1-like receptors. The renal subcapsular infusion of NPFF in C57BL/6 mice decreased renal sodium excretion and increased blood pressure. The NPFF-mediated increase in blood pressure was prevented by RF-9, an antagonist of NPFF receptors. Taken together, our findings suggest that autocrine NPFF and its receptors in the kidney regulate blood pressure, but the mechanisms remain to be determined.
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Affiliation(s)
- Hewang Lee
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA.
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
| | - Bibhas Amatya
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
| | - Van Anthony M Villar
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Laureano D Asico
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Jin Kwon Jeong
- Department of Pharmacology and Physiology, The George Washington University School of Medicine and Health Sciences, Washington, DC, 20052, USA
| | - Jun Feranil
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Shaun C Moore
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
| | - Xiaoxu Zheng
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
| | - Michael Bishop
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
| | - Jerald P Gomes
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Jacob Polzin
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
| | - Noah Smeriglio
- Department of Chemistry, Columbian College of Arts and Sciences, The George Washington University, Washington, DC, 20052, USA
| | - Pedro A S Vaz de Castro
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
| | - Ines Armando
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Robin A Felder
- Department of Pathology, University of Virginia Health Sciences Center, Charlottesville, VA, 22908.5, USA
| | - Ling Hao
- Department of Chemistry, Columbian College of Arts and Sciences, The George Washington University, Washington, DC, 20052, USA
| | - Pedro A Jose
- Division of Renal Diseases and Hypertension, Department of Medicine, The George Washington University School of Medicine and Health Sciences, 2300 Eye Street, NW, Washington, DC, 20052, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Department of Pharmacology and Physiology, The George Washington University School of Medicine and Health Sciences, Washington, DC, 20052, USA
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Strnadová V, Morgan A, Škrlová M, Haasová E, Bardová K, Myšková A, Sýkora D, Kuneš J, Železná B, Maletínská L. Peripheral administration of lipidized NPAF and NPFF analogs does not influence central food intake regulation but induces anxiety-like behavior. Neuropeptides 2024; 104:102417. [PMID: 38422597 DOI: 10.1016/j.npep.2024.102417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
RF-amide peptides influence multiple physiological processes, including the regulation of appetite, stress responses, behavior, and reproductive and endocrine functions. In this study, we examined the roles of neuropeptide FF receptors (NPFFR1 and NPFFR2) by generating several lipidized analogs of neuropeptide AF (NPAF) and 1DMe, a stable analog of neuropeptide FF (NPFF). These analogs were administered peripherally for the first time to investigate their effects on food intake and other potential physiological outcomes. Lipidized NPAF and 1DMe analogs exhibited enhanced stability and increased pharmacokinetics. These analogs demonstrated preserved high affinity for NPFFR2 in the nanomolar range, while the binding affinity for NPFFR1 was tens of nanomoles. They activated the ERK and Akt signaling pathways in cells overexpressing the NPFFR1 and NPFFR2 receptors. Acute food intake in fasted mice decreased after the peripheral administration of oct-NPAF or oct-1DMe. However, this effect was not as pronounced as that observed after the injection of palm11-PrRP31, a potent anorexigenic compound used as a comparator that binds to GPR10 and the NPFFR2 receptor with high affinity. Neither oct-1DMe nor oct-NPAF decreased food intake or body weight in mice with diet-induced obesity during long-term treatment. In mice treated with oct-1DMe, we observed decreased activity in the central zone during the open field test and decreased activity in the open arms of the elevated plus maze. Furthermore, we observed a decrease in plasma noradrenaline levels and an increase in plasma corticosterone levels, as well as an increase in Crh expression in the hypothalamus. Moreover, neuronal activity in the hypothalamus was increased after treatment with oct-1DMe. In this study, we report that oct-1DMe did not have any long-term effects on the central regulation of food intake; however, it caused anxiety-like behavior.
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Affiliation(s)
- Veronika Strnadová
- Institute of Organic Chemistry and Biochemistry, CAS, Prague, Czech Republic
| | - Alena Morgan
- Institute of Organic Chemistry and Biochemistry, CAS, Prague, Czech Republic
| | - Magdalena Škrlová
- Institute of Organic Chemistry and Biochemistry, CAS, Prague, Czech Republic; First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Eliška Haasová
- Institute of Physiology, CAS, Prague, Czech Republic; Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | | | - Aneta Myšková
- Institute of Organic Chemistry and Biochemistry, CAS, Prague, Czech Republic; Department of Analytical Chemistry, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - David Sýkora
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry, CAS, Prague, Czech Republic; Institute of Physiology, CAS, Prague, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry, CAS, Prague, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry, CAS, Prague, Czech Republic.
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Lin YT, Wu KH, Jhang JJ, Jhang JL, Yu Z, Tsai SC, Chen JC, Hsu PH, Li HY. Hypothalamic NPFFR2 attenuates central insulin signaling and its knockout diminishes metabolic dysfunction in mouse models of diabetes mellitus. Clin Nutr 2024; 43:603-619. [PMID: 38301284 DOI: 10.1016/j.clnu.2024.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/24/2023] [Accepted: 01/14/2024] [Indexed: 02/03/2024]
Abstract
BACKGROUND The hypothalamus is a crucial brain region that mediates the effects of insulin and leptin signals on peripheral metabolic functions. Previous research has shown that insulin signals in the hypothalamus act via multiple neuronal circuits and anabolic/catabolic pathways that converge on the vagus nerve and sympathetic fibers to coordinate energy metabolism in peripheral organs. Additionally, neuropeptide FF (NPFF) has been identified as a regulator of feeding behaviors and energy homeostasis in the hypothalamus, but the mechanisms underlying its involvement in metabolic control remain unclear. This study aims to explore the underlying mechanisms of NPFF in modulating metabolic disorders. METHODS In this study, we investigated the physiological role of NPFF in insulin-related energy homeostasis and metabolic health. First, we evaluated the effects of NPFF and its receptors on central insulin signaling using mouse hypothalamic cell lines and Npffr2-overexpressing mice. To further explore the effects of NPFFR2 on insulin-related metabolic disorders, such as diabetes mellitus, we used Npffr2-deleted mice in combination with the streptozotocin (STZ)-induced type 1 diabetes and high-fat diet/STZ-induced type 2 diabetic mouse models. The impacts of central NPFFR2 were demonstrated specifically through Npffr2 overexpression in the hypothalamic arcuate nucleus, which subsequently induced type 2 diabetes. RESULTS We found that stimulating NPFFR2 in the hypothalamus blocked hypothalamic insulin activity. Npffr2 deletion improved central and peripheral metabolic symptoms in both mouse models of diabetes mellitus, exerting effects on central and systemic insulin resistance, feeding behaviors, glucose and insulin intolerance, lipid metabolism, liver steatosis, and inflammation of white adipose tissues. The overexpression of ARC Npffr2 augmented the metabolic dysregulation in the mouse model of type 2 diabetes. CONCLUSIONS Our findings demonstrate that hypothalamic NPFFR2 negatively regulates insulin signaling in the central nervous system and plays an important role in maintaining systemic metabolic health, thereby providing valuable insights for potential clinical interventions targeting these health challenges.
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Affiliation(s)
- Ya-Tin Lin
- Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition & TMU Research Center for Digestive Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110301, Taiwan; Nutrition Research Center, Taipei Medical University Hospital, 250 Wu-Hsing Street, Taipei 110301, Taiwan.
| | - Kuan-Hsuan Wu
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, 259 Wen-Hua 1st Road, Taoyuan 33302, Taiwan
| | - Jie-Jhu Jhang
- Department of Medicine, Chang Gung University, 259 Wen-Hua 1st Road, Taoyuan 33302, Taiwan
| | - Jie-Lan Jhang
- Department of Medicine, Chang Gung University, 259 Wen-Hua 1st Road, Taoyuan 33302, Taiwan
| | - Zachary Yu
- Department of Medicine, Chang Gung University, 259 Wen-Hua 1st Road, Taoyuan 33302, Taiwan
| | - Sze-Chi Tsai
- Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition & TMU Research Center for Digestive Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110301, Taiwan
| | - Jin-Chung Chen
- Graduate Institute of Biomedical Sciences, Department of Physiology and Pharmacology & Healthy Aging Research Center, Chang Gung University, 259 Wen-Hua 1st Road, Taoyuan 33302, Taiwan; Neuroscience Research Center, Chang Gung Memorial Hospital, 5 Fuxing Street, Taoyuan 33305, Taiwan
| | - Po-Hung Hsu
- Department of Medical Research and Development, Chang Gung Memorial Hospital, Linkou 33305, Taiwan
| | - Hui-Yun Li
- Department of Natural Sciences, Oregon Institute of Technology, 3201 Campus Drive, Klamath Falls, OR 97601, USA
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Goudarzi MH, Eagles DA, Lim J, Biggs KA, Kotze AC, Ruffell AP, Fairlie DP, King GF, Walker AA. Venom composition and bioactive RF-amide peptide toxins of the saddleback caterpillar, Acharia stimulea (Lepidoptera: Limacodidae). Biochem Pharmacol 2023; 213:115598. [PMID: 37201876 DOI: 10.1016/j.bcp.2023.115598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023]
Abstract
Limacodidae is a family of lepidopteran insects comprising >1500 species. More than half of these species produce pain-inducing defensive venoms in the larval stage, but little is known about their venom toxins. Recently, we characterised proteinaceous toxins from the Australian limacodid caterpillar Doratifera vulnerans, but it is unknown if the venom of this species is typical of other Limacodidae. Here, we use single animal transcriptomics and venom proteomics to investigate the venom of an iconic limacodid, the North American saddleback caterpillar Acharia stimulea. We identified 65 venom polypeptides, grouped into 31 different families. Neurohormones, knottins, and homologues of the immune signaller Diedel make up the majority of A.stimulea venom, indicating strong similarities to D. vulnerans venom, despite the large geographic separation of these caterpillars. One notable difference is the presence of RF-amide peptide toxins in A. stimulea venom. Synthetic versions of one of these RF-amide toxins potently activated the human neuropeptide FF1 receptor, displayed insecticidal activity when injected into Drosophila melanogaster, and moderately inhibited larval development of the parasitic nematode Haemonchus contortus. This study provides insights into the evolution and activity of venom toxins in Limacodidae, and provides a platform for future structure-function characterisation of A.stimulea peptide toxins.
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Affiliation(s)
- Mohaddeseh H Goudarzi
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Australian Research Council Centre of Excellence for Innovations in Protein and Peptide Science, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - David A Eagles
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Australian Research Council Centre of Excellence for Innovations in Protein and Peptide Science, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Junxian Lim
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Australian Research Council Centre of Excellence for Innovations in Protein and Peptide Science, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Centre for Inflammation and Disease Research, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Kimberley A Biggs
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Australian Research Council Centre of Excellence for Innovations in Protein and Peptide Science, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Andrew C Kotze
- CSIRO Agriculture and Food, St Lucia, Queensland 4072, Australia
| | - Angela P Ruffell
- CSIRO Agriculture and Food, St Lucia, Queensland 4072, Australia
| | - David P Fairlie
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Australian Research Council Centre of Excellence for Innovations in Protein and Peptide Science, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Centre for Inflammation and Disease Research, The University of Queensland, St Lucia, Queensland 4072, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Glenn F King
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Australian Research Council Centre of Excellence for Innovations in Protein and Peptide Science, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia.
| | - Andrew A Walker
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia; Australian Research Council Centre of Excellence for Innovations in Protein and Peptide Science, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia.
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Wu Z, Jia Q, Liu B, Fang L, Leung PCK, Cheng JC. NPFF stimulates human ovarian cancer cell invasion by upregulating MMP-9 via ERK1/2 signaling. Exp Cell Res 2023; 430:113693. [PMID: 37392963 DOI: 10.1016/j.yexcr.2023.113693] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 05/17/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023]
Abstract
Neuropeptide FF (NPFF) belongs to the RFamide peptide family. NPFF regulates a variety of physiological functions by binding to a G protein-coupled receptor, NPFFR2. Epithelial ovarian cancer (EOC) is a leading cause of death among gynecological malignancies. The pathogenesis of EOC can be regulated by many local factors, including neuropeptides, through an autocrine/paracrine manner. However, to date, the expression and/or function of NPFF/NPFFR2 in EOC is undetermined. In this study, we show that the upregulation of NPFFR2 mRNA was associated with poor overall survival in EOC. The TaqMan probe-based RT-qPCR showed that NPFF and NPFFR2 were expressed in three human EOC cells, CaOV3, OVCAR3, and SKOV3. In comparison, NPFF and NPFFR2 expression levels were higher in SKOV3 cells than in CaOV3 or OVCAR3 cells. Treatment of SKOV3 cells with NPFF did not affect cell viability and proliferation but stimulated cell invasion. NPFF treatment upregulates matrix metalloproteinase-9 (MMP-9) expression. Using the siRNA-mediated knockdown approach, we showed that the stimulatory effect of NPFF on MMP-9 expression was mediated by the NPFFR2. Our results also showed that ERK1/2 signaling was activated in SKOV3 cells in response to the NPFF treatment. In addition, blocking the activation of ERK1/2 signaling abolished the NPFF-induced MMP-9 expression and cell invasion. This study provides evidence that NPFF stimulates EOC cell invasion by upregulating MMP-9 expression through the NPFFR2-mediated ERK1/2 signaling pathway.
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Affiliation(s)
- Ze Wu
- Center for Reproductive Medicine, Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qiongqiong Jia
- Center for Reproductive Medicine, Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Boqun Liu
- Center for Reproductive Medicine, Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lanlan Fang
- Center for Reproductive Medicine, Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Peter C K Leung
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, British Columbia, V5Z 4H4, Canada
| | - Jung-Chien Cheng
- Center for Reproductive Medicine, Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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Jiang H, Wang L, Zhu J, Ping Z. NPFFR2 gene compound heterozygous variants associated with preeclampsia identified by whole-exome sequencing. Gene 2023; 854:147108. [PMID: 36535464 DOI: 10.1016/j.gene.2022.147108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 11/28/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Preeclampsia (PE) is an idiopathic disorder of pregnancy. The exact cause of PE remains unknown. Emerging evidence indicates that the cause of PE is linked to genetic factors. Therefore, the aim of this study was to identify the susceptibility genes for PE. METHODS Nine families with severe PE were recruited. The whole-exome sequencing (WES) was performed on each family, and Sanger sequencing was used to identify the potential pathogenic genetic variants. RESULTS After a rigorous bioinformatics analysis, compound heterozygous variants in the NPFFR2 gene, NM_004885.2: c.601A > G, p.Met201Val and c.995C > T, p.Ala332Val were found in the No.4 pedigree. Bioinformatics analysis showed that these sites were highly conserved among several species and were predicted to be pathogenic variants according to multiple online mutational function prediction software packages. Due to the compound heterozygous variants of NPFFR2, more bonds are generated between mutant amino acids and spatial adjacent amino acids, which may lead to more stable active conformation of protein and not easy to be degraded. CONCLUSIONS We demonstrated for the first time that compound heterozygous variants of the NPFFR2 gene might be potentially associated with severe PE, the results of this study provide clinicians and researchers with a better understanding of the molecular mechanisms underlying severe PE in pregnant women.
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Affiliation(s)
- Huling Jiang
- Department of Prenatal Diagnosis Center, Maternity and Child Health Care Affiliated Hospital, Jiaxing University, Jiaxing 314000, China
| | - Luming Wang
- Department of Prenatal Diagnosis Center, Maternity and Child Health Care Affiliated Hospital, Jiaxing University, Jiaxing 314000, China
| | - Jianjun Zhu
- Department of Prenatal Diagnosis Center, Maternity and Child Health Care Affiliated Hospital, Jiaxing University, Jiaxing 314000, China.
| | - Zepeng Ping
- Department of Prenatal Diagnosis Center, Maternity and Child Health Care Affiliated Hospital, Jiaxing University, Jiaxing 314000, China.
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Zhang L, Koller J, Gopalasingam G, Qi Y, Herzog H. Central NPFF signalling is critical in the regulation of glucose homeostasis. Mol Metab 2022; 62:101525. [PMID: 35691527 PMCID: PMC9234230 DOI: 10.1016/j.molmet.2022.101525] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/03/2022] [Indexed: 11/01/2022] Open
Abstract
OBJECTIVE Neuropeptide FF (NPFF) group peptides belong to the evolutionary conserved RF-amide peptide family. While they have been assigned a role as pain modulators, their roles in other aspects of physiology have received much less attention. NPFF peptides and their receptor NPFFR2 have strong and localized expression within the dorsal vagal complex that has emerged as the key centre for regulating glucose homeostasis. Therefore, we investigated the role of the NPFF system in the control of glucose metabolism and the histochemical and molecular identities of NPFF and NPFFR2 neurons. METHODS We examined glucose metabolism in Npff-/- and wild type (WT) mice using intraperitoneal (i.p.) glucose tolerance and insulin tolerance tests. Body composition and glucose tolerance was further examined in mice after 1-week and 3-week of high-fat diet (HFD). Using RNAScope double ISH, we investigated the neurochemical identity of NPFF and NPFFR2 neurons in the caudal brainstem, and the expression of receptors for peripheral factors in NPFF neurons. RESULTS Lack of NPFF signalling in mice leads to improved glucose tolerance without significant impact on insulin excursion after the i.p. glucose challenge. In response to an i.p. bolus of insulin, Npff-/- mice have lower glucose excursions than WT mice, indicating an enhanced insulin action. Moreover, while HFD has rapid and potent detrimental effects on glucose tolerance, this diet-induced glucose intolerance is ameliorated in mice lacking NPFF signalling. This occurs in the absence of any significant impact of NPFF deletion on lean or fat masses, suggesting a direct effect of NPFF signalling on glucose metabolism. We further reveal that NPFF neurons in the subpostrema area (SubP) co-express receptors for peripheral factors involved in glucose homeostasis regulation such as insulin and GLP1. Furthermore, Npffr2 is expressed in the glutamatergic NPFF neurons in the SubP, and in cholinergic neurons of the dorsal motor nucleus of the vagus (DMV), indicating that central NPFF signalling is likely modulating vagal output to innervated peripheral tissues including those important for glucose metabolic control. CONCLUSIONS NPFF signalling plays an important role in the regulation of glucose metabolism. NPFF neurons in the SubP are likely to receive peripheral signals and mediate the control of whole-body glucose homeostasis via centrally vagal pathways. Targeting NPFF and NPFFR2 signalling may provide a new avenue for treating type 2 diabetes and obesity.
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Affiliation(s)
- Lei Zhang
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, NSW, Australia; St. Vincent's Clinical Campus, School of Clinical Medicine, UNSW Medicine and Health, UNSW Sydney, NSW Australia.
| | - Julia Koller
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, NSW, Australia; St. Vincent's Clinical Campus, School of Clinical Medicine, UNSW Medicine and Health, UNSW Sydney, NSW Australia
| | - Gopana Gopalasingam
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, NSW, Australia
| | - Yue Qi
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, NSW, Australia
| | - Herbert Herzog
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, NSW, Australia; St. Vincent's Clinical Campus, School of Clinical Medicine, UNSW Medicine and Health, UNSW Sydney, NSW Australia
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8
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NPFF Decreases Activity of Human Arcuate NPY Neurons: A Study in Embryonic-Stem-Cell-Derived Model. Int J Mol Sci 2022; 23:ijms23063260. [PMID: 35328681 PMCID: PMC8948797 DOI: 10.3390/ijms23063260] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 12/10/2022] Open
Abstract
Restoring the control of food intake is the key to obesity management and prevention. The arcuate nucleus (ARC) of the hypothalamus is extensively being studied as a potential anti-obesity target. Animal studies showed that neuropeptide FF (NPFF) reduces food intake by its action in neuropeptide Y (NPY) neurons of the hypothalamic ARC, but the detailed mode of action observed in human neurons is missing, due to the lack of a human-neuron-based model for pharmacology testing. Here, we validated and utilized a human-neural-stem-cell-based (hNSC) model of ARC to test the effects of NPFF on cellular pathways and neuronal activity. We found that in the human neurons, decreased cAMP levels by NPFF resulted in a reduced rate of cytoplasmic calcium oscillations, indicating an inhibition of ARC NPY neurons. This suggests the therapeutic potential of NPFFR2 in obesity. In addition, we demonstrate the use of human-stem-cell-derived neurons in pharmacological applications and the potential of this model to address functional aspects of human hypothalamic neurons.
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Koller J, Herzog H, Zhang L. The distribution of Neuropeptide FF and Neuropeptide VF in central and peripheral tissues and their role in energy homeostasis control. Neuropeptides 2021; 90:102198. [PMID: 34534716 DOI: 10.1016/j.npep.2021.102198] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/30/2021] [Accepted: 09/06/2021] [Indexed: 11/26/2022]
Abstract
Neuropeptide FF (NPFF) and Neuropeptide VF (NPVF) are part of the extended RFamide peptide family characterized by their common arginine (R) and amidated phenylalanine (F)-motif at the carboxyl terminus. Both peptides signal through their respective high affinity G-protein coupled receptors, NPFFR2 and NPFFR1, but also show binding affinity for the other receptor due to their sequence similarity. NPFF and NPVF are highly conserved throughout evolution and can be found across the whole animal kingdom. Both have been implicated in a variety of biological mechanisms, including nociception, locomotion, reproduction, and response to pain and stress. However, more recently a new major functional role in the control of energy homeostasis has been discovered. In this article we will summarise the current knowledge on the distribution of NPFF, NPVF, and their receptors in central and peripheral tissues, as well as how this relates to the regulation of food intake and energy balance, which will help to better understand their role in these processes and thus might help finding treatments for impaired energy homeostasis disorders, such as obesity or anorexia.
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Affiliation(s)
- Julia Koller
- Healthy Aging, Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, Sydney, NSW 2010, Australia; St. Vincent's Clinical School, UNSW Sydney, NSW 2052, Australia
| | - Herbert Herzog
- Healthy Aging, Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, Sydney, NSW 2010, Australia; School of Medical Sciences, UNSW Sydney, NSW, Australia; Faculty of Medicine, UNSW Sydney, NSW, Australia
| | - Lei Zhang
- Healthy Aging, Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, Sydney, NSW 2010, Australia; St. Vincent's Clinical School, UNSW Sydney, NSW 2052, Australia.
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10
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Zhang L, Koller J, Ip CK, Gopalasingam G, Bajaj N, Lee NJ, Enriquez RF, Herzog H. Lack of neuropeptide FF signalling in mice leads to reduced repetitive behavior, altered drinking behavior, and fuel type selection. FASEB J 2021; 35:e21980. [PMID: 34694651 DOI: 10.1096/fj.202100703r] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 09/06/2021] [Accepted: 09/22/2021] [Indexed: 12/20/2022]
Abstract
Although best known for their involvement in modulating nociception, Neuropeptide FF (NPFF) group peptides have been suggested to fulfil a variety of biological functions such as feeding, anxiety behaviors and thermogenesis. However, evidence supporting these functions of NPFF is mostly pharmacological, leaving the physiological relevance unaddressed. Here we examined the physiological impact of lack of NPFF signalling in both genders using a Npff-/- mouse model. NPFF expression in the mouse is restricted to the spinal cord and brainstem while its cognate receptor NPFFR2 has wider distribution throughout the brain. Both male and female Npff-/- mice showed reduced repetitive behaviors evidenced in the marble burying test and self-grooming test. A decrease in anxiety-related behaviors in the Npff-/- mice was also observe in the open field test and to a lesser degree in an elevated plus maze test. Moreover, both male and female Npff-/- mice exhibited increased water intake resulting from increases in drinking size, rather than number of drinking events. During a fasting-refeeding challenge, Npff-/- mice of both genders displayed alterations in reparatory exchange ratio that reflect a greater fuel type flexibility. Npff-/- mice were otherwise wild-type-like regarding body weight, body composition, feeding behaviors, locomotion or energy expenditure. Together, these findings reveal the important physiological roles of NPFF signalling in the regulation of anxiety-related and repetitive behaviors, fluid homeostasis and oxidative fuel selection, highlighting the therapeutical potential of the NPFF system in a number of behavioral and metabolic disorders.
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Affiliation(s)
- Lei Zhang
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, University of NSW, Sydney, New South Wales, Australia
| | - Julia Koller
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, University of NSW, Sydney, New South Wales, Australia
| | - Chi Kin Ip
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, University of NSW, Sydney, New South Wales, Australia
| | - Gopana Gopalasingam
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, New South Wales, Australia
| | - Nikita Bajaj
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, New South Wales, Australia
| | - Nicola J Lee
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, University of NSW, Sydney, New South Wales, Australia
| | - Ronaldo F Enriquez
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, New South Wales, Australia
| | - Herbert Herzog
- Neuroscience Division, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, New South Wales, Australia.,School of Medical Sciences, University of NSW, Sydney, New South Wales, Australia.,Faculty of Medicine, University of NSW, Sydney, New South Wales, Australia
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11
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Carleial S, Nätt D, Unternährer E, Elbert T, Robjant K, Wilker S, Vukojevic V, Kolassa IT, Zeller AC, Koebach A. DNA methylation changes following narrative exposure therapy in a randomized controlled trial with female former child soldiers. Sci Rep 2021; 11:18493. [PMID: 34531495 PMCID: PMC8445994 DOI: 10.1038/s41598-021-98067-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 09/02/2021] [Indexed: 02/08/2023] Open
Abstract
The aftermath of traumatization lives on in the neural and epigenetic traces creating a momentum of affliction in the psychological and social realm. Can psychotherapy reorganise these memories through changes in DNA methylation signatures? Using a randomised controlled parallel group design, we examined methylome-wide changes in saliva samples of 84 female former child soldiers from Eastern DR Congo before and six months after Narrative Exposure Therapy. Treatment predicted differentially methylated positions (DMPs) related to ALCAM, RIPOR2, AFAP1 and MOCOS. In addition, treatment associations overlapped at gene level with baseline clinical and social outcomes. Treatment related DMPs are involved in memory formation-the key agent in trauma focused treatments-and enriched for molecular pathways commonly affected by trauma related disorders. Results were partially replicated in an independent sample of 53 female former child soldiers from Northern Uganda. Our results suggest a molecular impact of psychological treatment in women with war-related childhood trauma.Trial registration: Addressing Heightened Levels of Aggression in Traumatized Offenders With Psychotherapeutic Means (ClinicalTrials.gov Identifier: NCT02992561, 14/12/2016).
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Affiliation(s)
- Samuel Carleial
- grid.9811.10000 0001 0658 7699Department of Psychology, Centre for Psychiatry, University of Konstanz, Feuerstein-Strasse. 55, Haus 22, 78479 Konstanz, Germany
| | - Daniel Nätt
- grid.5640.70000 0001 2162 9922Division of Neurobiology, Department of Biomedical and Clinical Sciences, University of Linköping, Building 463, Room 12.023, Linköping, Sweden
| | - Eva Unternährer
- grid.9811.10000 0001 0658 7699Department of Psychology, Centre for Psychiatry, University of Konstanz, Feuerstein-Strasse. 55, Haus 22, 78479 Konstanz, Germany ,grid.6612.30000 0004 1937 0642Child- and Adolescent Research Department, Psychiatric University Hospitals Basel (UPK), University of Basel, Basel, Switzerland
| | - Thomas Elbert
- grid.9811.10000 0001 0658 7699Department of Psychology, Centre for Psychiatry, University of Konstanz, Feuerstein-Strasse. 55, Haus 22, 78479 Konstanz, Germany ,Vivo International E.V., Postbox 5108, 78430 Konstanz, Germany
| | - Katy Robjant
- Vivo International E.V., Postbox 5108, 78430 Konstanz, Germany
| | - Sarah Wilker
- Vivo International E.V., Postbox 5108, 78430 Konstanz, Germany ,grid.7491.b0000 0001 0944 9128Department of Psychology and Sports Science, University of Bielefeld, 33501 Bielefeld, Germany
| | - Vanja Vukojevic
- grid.6612.30000 0004 1937 0642Psychiatric University Clinics, Transfaculty Research Platform, University of Basel, Wilhelm Klein-Strasse 27, CH-4012 Basel, Switzerland
| | - Iris-Tatjana Kolassa
- Vivo International E.V., Postbox 5108, 78430 Konstanz, Germany ,grid.6582.90000 0004 1936 9748Department of Clinical and Biological Psychology, Institute of Psychology & Education, University of Ulm, Ulm University, Ulm, Germany
| | - Anja C. Zeller
- grid.9811.10000 0001 0658 7699Department of Psychology, Centre for Psychiatry, University of Konstanz, Feuerstein-Strasse. 55, Haus 22, 78479 Konstanz, Germany ,Vivo International E.V., Postbox 5108, 78430 Konstanz, Germany
| | - Anke Koebach
- grid.9811.10000 0001 0658 7699Department of Psychology, Centre for Psychiatry, University of Konstanz, Feuerstein-Strasse. 55, Haus 22, 78479 Konstanz, Germany ,Vivo International E.V., Postbox 5108, 78430 Konstanz, Germany
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12
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Mohapatra SS, Mukherjee J, Banerjee D, Das PK, Ghosh PR, Das K. RFamide peptides, the novel regulators of mammalian HPG axis: A review. Vet World 2021; 14:1867-1873. [PMID: 34475710 PMCID: PMC8404114 DOI: 10.14202/vetworld.2021.1867-1873] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/10/2021] [Indexed: 01/04/2023] Open
Abstract
The RFamide-related peptides (RFRPs) are the group of neuropeptides synthesized predominantly from the hypothalamus that negatively affects the hypothalamo-hypophyseal-gonadal (hypothalamic–pituitary–gonadal [HPG]) axis. These peptides are first identified in quail brains and emerged as the mammalian orthologs of avian gonadotropin inhibitory hormones. The RFRP-3 neurons in the hypothalamus are present in several mammalian species. The action of RFRP-3 is mediated through a G-protein-coupled receptor called OT7T022. The predominant role of RFRP-3 is the inhibition of HPG axis with several other effects such as the regulation of metabolic activity, stress regulation, controlling of non-sexual motivated behavior, and sexual photoperiodicity in concert with other neuropeptides such as kisspeptin, neuropeptide-Y (NPY), pro-opiomelanocortin, orexin, and melanin. RFamide peptides synthesized in the granulosa cells, interstitial cells, and seminiferous tubule regulate steroidogenesis and gametogenesis in the gonads. The present review is intended to provide the recent findings that explore the role of RFRP-3 in regulating HPG axis and its potential applications in the synchronization of reproduction and its therapeutic interventions to prevent stress-induced amenorrhea.
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Affiliation(s)
- Smruti Smita Mohapatra
- Department of Veterinary Physiology, Faculty of Veterinary and Animal Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Joydip Mukherjee
- Department of Veterinary Physiology, Faculty of Veterinary and Animal Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Dipak Banerjee
- Department of Veterinary Physiology, Faculty of Veterinary and Animal Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Pradip Kumar Das
- Department of Veterinary Physiology, Faculty of Veterinary and Animal Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Prabal Ranjan Ghosh
- Department of Veterinary Physiology, Faculty of Veterinary and Animal Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Kinsuk Das
- Department of Veterinary Physiology, Faculty of Veterinary and Animal Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
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13
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Quillet R, Schneider S, Utard V, Drieu la Rochelle A, Elhabazi K, Henningsen JB, Gizzi P, Schmitt M, Kugler V, Simonneaux V, Ilien B, Simonin F, Bihel F. Identification of an N-acylated- DArg-Leu-NH 2 Dipeptide as a Highly Selective Neuropeptide FF1 Receptor Antagonist That Potently Prevents Opioid-Induced Hyperalgesia. J Med Chem 2021; 64:7555-7564. [PMID: 34008968 DOI: 10.1021/acs.jmedchem.1c00256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
RFamide-related peptide-3 (RFRP-3) and neuropeptide FF (NPFF) target two different receptor subtypes called neuropeptide FF1 (NPFF1R) and neuropeptide FF2 (NPFF2R) that modulate several functions. However, the study of their respective role is severely limited by the absence of selective blockers. We describe here the design of a highly selective NPFF1R antagonist called RF3286, which potently blocks RFRP-3-induced hyperalgesia in mice and luteinizing hormone release in hamsters. We then showed that the pharmacological blockade of NPFF1R in mice prevents the development of fentanyl-induced hyperalgesia while preserving its analgesic effect. Altogether, our data indicate that RF3286 represents a useful pharmacological tool to study the involvement of the NPFF1R/RFRP-3 system in different functions and different species. Thanks to this compound, we showed that this system is critically involved in the development of opioid-induced hyperalgesia, suggesting that NPFF1R antagonists might represent promising therapeutic tools to improve the use of opioids in the treatment of chronic pain.
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Affiliation(s)
- Raphaëlle Quillet
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, 300 Boulevard Sébastien Brant, 67412 Illkirch, France
| | - Séverine Schneider
- Laboratoire d'Innovation Thérapeutique, UMR 7200 CNRS, Université de Strasbourg, 74 Route du Rhin, 67401 Illkirch, France
| | - Valérie Utard
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, 300 Boulevard Sébastien Brant, 67412 Illkirch, France
| | - Armand Drieu la Rochelle
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, 300 Boulevard Sébastien Brant, 67412 Illkirch, France
| | - Khadija Elhabazi
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, 300 Boulevard Sébastien Brant, 67412 Illkirch, France
| | - Jo Beldring Henningsen
- Institut des Neurosciences Cellulaires et Intégratives, UPR 3212 CNRS, 8 Allée du Général Rouvillois, 67000 Strasbourg, France
| | - Patrick Gizzi
- TechMedIll, UMS 3286 CNRS, Université de Strasbourg, 300 Boulevard Sébastien Brant, 67412 Illkirch, France
| | - Martine Schmitt
- Laboratoire d'Innovation Thérapeutique, UMR 7200 CNRS, Université de Strasbourg, 74 Route du Rhin, 67401 Illkirch, France
| | - Valérie Kugler
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, 300 Boulevard Sébastien Brant, 67412 Illkirch, France
| | - Valérie Simonneaux
- Institut des Neurosciences Cellulaires et Intégratives, UPR 3212 CNRS, 8 Allée du Général Rouvillois, 67000 Strasbourg, France
| | - Brigitte Ilien
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, 300 Boulevard Sébastien Brant, 67412 Illkirch, France
| | - Frédéric Simonin
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, 300 Boulevard Sébastien Brant, 67412 Illkirch, France
| | - Frédéric Bihel
- Laboratoire d'Innovation Thérapeutique, UMR 7200 CNRS, Université de Strasbourg, 74 Route du Rhin, 67401 Illkirch, France
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14
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Djouahra N, Moudilou EN, Exbrayat JM, Hammouche S. Immunodistribution of RFamide-related peptide-3 (RFRP-3) during the seminiferous epithelium cycle in a desert rodent Psammomys obesus. Tissue Cell 2021; 69:101484. [PMID: 33450652 DOI: 10.1016/j.tice.2020.101484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 12/15/2020] [Accepted: 12/21/2020] [Indexed: 12/21/2022]
Abstract
The Sand rat, Psammomys obesus, living northwest of the Algerian Sahara, presents a seasonal reproductive cycle. The purposes of this study were firstly to determine the stages of seminiferous epithelium cycle (SEC) by histological and morphometric analysis and secondly to investigate, for the first time, the testicular expression of RFamide-related peptide-3 (RFRP-3) during the SEC by immunohistochemistry. The results showed that the SEC consists of 14 stages according to the tubular morphology method. RFRP-3 was observed in both testicular compartments: the tubular and the interstitial. Leydig cells exhibited the highest RFRP-3 signal (30.73 % ± 4.80) compared to Sertoli cells (13-15 %). In the germline, RFRP-3 was detected during the late prophase I of meiosis in late pachytene, diplotene and metaphasic spermatocytes I. In addition, only round and triangular spermatids were positive during spermiogenesis. Referring to the SEC, it was found that the increased staining of RFRP-3 in spermatocytes I coincided with late pachytene of XI and XII stages (16.90 % ± 0.69 and 16.61 % ± 0.28, respectively). In spermatids, the labeling decreased in the triangular ones at stage IX (8.04 % ± 0.42). These results suggest the involvement of RFRP-3 in the control of SEC in P. obesus.
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Affiliation(s)
- Nassima Djouahra
- USTHB, University of Sciences and Technology of Houari Boumediene, Biological Sciences Faculty, Arid Area Research Laboratory, Algiers, Algeria.
| | - Elara N Moudilou
- Confluence Sciences and Humanities Research Unit, Biosciences Technologies Ethics Laboratory, Lyon Catholic University, 10 Place des Archives, Lyon, 69002, France
| | - Jean-Marie Exbrayat
- Confluence Sciences and Humanities Research Unit, Biosciences Technologies Ethics Laboratory, Lyon Catholic University, 10 Place des Archives, Lyon, 69002, France
| | - Sadjia Hammouche
- USTHB, University of Sciences and Technology of Houari Boumediene, Biological Sciences Faculty, Arid Area Research Laboratory, Algiers, Algeria
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15
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Bédécarrats GY, Hanlon C, Tsutsui K. Gonadotropin Inhibitory Hormone and Its Receptor: Potential Key to the Integration and Coordination of Metabolic Status and Reproduction. Front Endocrinol (Lausanne) 2021; 12:781543. [PMID: 35095760 PMCID: PMC8792613 DOI: 10.3389/fendo.2021.781543] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 12/02/2021] [Indexed: 12/18/2022] Open
Abstract
Since its discovery as a novel gonadotropin inhibitory peptide in 2000, the central and peripheral roles played by gonadotropin-inhibiting hormone (GnIH) have been significantly expanded. This is highlighted by the wide distribution of its receptor (GnIH-R) within the brain and throughout multiple peripheral organs and tissues. Furthermore, as GnIH is part of the wider RF-amide peptides family, many orthologues have been characterized across vertebrate species, and due to the promiscuity between ligands and receptors within this family, confusion over the nomenclature and function has arisen. In this review, we intend to first clarify the nomenclature, prevalence, and distribution of the GnIH-Rs, and by reviewing specific localization and ligand availability, we propose an integrative role for GnIH in the coordination of reproductive and metabolic processes. Specifically, we propose that GnIH participates in the central regulation of feed intake while modulating the impact of thyroid hormones and the stress axis to allow active reproduction to proceed depending on the availability of resources. Furthermore, beyond the central nervous system, we also propose a peripheral role for GnIH in the control of glucose and lipid metabolism at the level of the liver, pancreas, and adipose tissue. Taken together, evidence from the literature strongly suggests that, in fact, the inhibitory effect of GnIH on the reproductive axis is based on the integration of environmental cues and internal metabolic status.
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Affiliation(s)
- Grégoy Y. Bédécarrats
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
- *Correspondence: Grégoy Y. Bédécarrats,
| | - Charlene Hanlon
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
| | - Kazuyoshi Tsutsui
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashihiroshima, Japan
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16
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Nguyen T, Marusich J, Li JX, Zhang Y. Neuropeptide FF and Its Receptors: Therapeutic Applications and Ligand Development. J Med Chem 2020; 63:12387-12402. [PMID: 32673481 DOI: 10.1021/acs.jmedchem.0c00643] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The endogenous neuropeptide FF (NPFF) and its two cognate G protein-coupled receptors, Neuropeptide FF Receptors 1 and 2 (NPFFR1 and NPFFR2), represent a relatively new target system for many therapeutic applications including pain regulation, modulation of opioid side effects, drug reward, anxiety, cardiovascular conditions, and other peripheral effects. Since the cloning of NPFFR1 and NPFFR2 in 2000, significant progress has been made to understand their pharmacological roles and interactions with other receptor systems, notably the opioid receptors. A variety of NPFFR ligands with different mechanisms of action (agonists or antagonists) have been discovered although with limited subtype selectivities. Differential pharmacological effects have been observed for many of these NPFFR ligands, depending on assays/models employed and routes of administration. In this Perspective, we highlight the therapeutic potentials, current knowledge gaps, and latest updates of the development of peptidic and small molecule NPFFR ligands as tool compounds and therapeutic candidates.
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Affiliation(s)
- Thuy Nguyen
- Center for Drug Discovery, Research Triangle Institute, 3040 East Cornwallis Road, Research Triangle Park, North Carolina 27709, United States
| | - Julie Marusich
- Center for Drug Discovery, Research Triangle Institute, 3040 East Cornwallis Road, Research Triangle Park, North Carolina 27709, United States
| | - Jun-Xu Li
- Department of Pharmacology and Toxicology, University at Buffalo, the State University of New York, Buffalo, New York 14203, United States
| | - Yanan Zhang
- Center for Drug Discovery, Research Triangle Institute, 3040 East Cornwallis Road, Research Triangle Park, North Carolina 27709, United States
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17
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Chen J, Huang S, Zhang J, Li J, Wang Y. Characterization of the neuropeptide FF (NPFF) gene in chickens: evidence for a single bioactive NPAF peptide encoded by the NPFF gene in birds. Domest Anim Endocrinol 2020; 72:106435. [PMID: 32247990 DOI: 10.1016/j.domaniend.2020.106435] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 11/09/2019] [Accepted: 01/03/2020] [Indexed: 01/06/2023]
Abstract
The 2 structurally related peptides, neuropeptide FF (NPFF) and neuropeptide AF (NPAF), are encoded by the NPFF gene and have been identified as neuromodulators that regulate nociception and opiate-mediated analgesia via NPFF receptor (NPFFR2) in mammals. However, little is known about these 2 peptides in birds. In this study, we examined the structure, tissue expression profile, and functionality of NPAF and NPFF in chickens. Our results showed that: 1) unlike mammalian NPFF, NPFF from chicken and other avian species is predicted to produce a single bioactive NPAF peptide, whereas the putative avian NPFF peptide likely lacks activity due to the absence of functional RFamide motif at its C-terminus; 2) synthetic chicken (c-) NPAF can potently activate cNPFFR2 (and not cNPFFR1) expressed in HEK293 cells, as monitored by 3 cell-based luciferase reporter systems, indicating that cNPAF is a potent ligand for cNPFFR2, which activation could decrease intracellular cAMP levels and stimulate the MAPK/ERK signaling cascade; interestingly, gonadotropin-inhibitory hormone, a peptide sharing high structural similarity to NPAF, could specifically activate cNPFFR1 (but not cNPFFR2); 3) Quantitative real-time PCR revealed that cNPFF mRNA is widely expressed in chicken tissues with the highest level detected in the hypothalamus, whereas cNPFFR2 is expressed in all tissues examined with the highest level noted in the hypothalamus and anterior pituitary. Taken together, our data reveal that avian NPFF encodes a single bioactive NPAF peptide, which preferentially activates NPFFR2, and provides insights into potential structural and functional changes of NPFF-derived peptides during vertebrate evolution.
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Affiliation(s)
- J Chen
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - S Huang
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - J Zhang
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - J Li
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China.
| | - Y Wang
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China.
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18
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Zhu H, Peng B, Klausen C, Yi Y, Li Y, Xiong S, von Dadelszen P, Leung PCK. NPFF increases fusogenic proteins syncytin 1 and syncytin 2 via GCM1 in first trimester primary human cytotrophoblast cells. FASEB J 2020; 34:9419-9432. [PMID: 32501590 DOI: 10.1096/fj.201902978r] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 03/25/2020] [Accepted: 05/04/2020] [Indexed: 01/22/2023]
Abstract
Neuropeptide FF (NPFF) is well-known for its roles in the central nervous system. Despite studies demonstrating that NPFF receptor 2 (NPFFR2) mRNA is highest in placenta, nothing is known about NPFF-NPFFR2 functions in placental development. Here, we investigated the effects of NPFF-NPFFR2 on expression of syncytial [human chorionic gonadotropin (hCG) β] and fusogenic [syncytin 1, syncytin 2, and glial cells missing 1 (GCM1)] genes in first trimester primary human cytotrophoblast cells. By analyzing two publicly available microarray data sets, we found that NPFF is consistently expressed throughout gestation whereas NPFFR2 increases in first trimester and is elevated in placenta samples from women with preeclampsia. Immunohistochemistry showed that NPFFR2, syncytin 1/2, and GCM1 each displayed unique patterns of expression among different trophoblast populations in first trimester placenta. Treatment of primary human cytotrophoblast cells with NPFF increased the mRNA and protein levels of hCG β, syncytin 1, syncytin 2, and GCM1; and knockdown of NPFFR2 abolished these effects. Interestingly, GCM1 mediated NPFF-induced upregulation of syncytin 1 and syncytin 2, but not hCG β, in primary human cytotrophoblasts. Our results demonstrate that NPFF acts via NPFFR2 to enhance production of hCG β and promote GCM1-dependent expression of syncytin 1 and 2 in human cytotrophoblasts.
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Affiliation(s)
- Hua Zhu
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Bo Peng
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Christian Klausen
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Yuyin Yi
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Yan Li
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Siyuan Xiong
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | | | - Peter C K Leung
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
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19
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King TI, Roewekamp AC, Sharma A, Harrison S, Mesangeau C, Mottinelli M, Kamble SH, McCurdy CR, Avery BA. Bioanalytical method development and validation of MES207, a neuropeptide FF receptor antagonist, and its application in preclinical pharmacokinetics. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1134-1135:121875. [DOI: 10.1016/j.jchromb.2019.121875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/23/2019] [Accepted: 11/01/2019] [Indexed: 11/28/2022]
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Gibula-Tarlowska E, Grochecki P, Silberring J, Kotlinska JH. The kisspeptin derivative kissorphin reduces the acquisition, expression, and reinstatement of ethanol-induced conditioned place preference in rats. Alcohol 2019; 81:11-19. [PMID: 30981809 DOI: 10.1016/j.alcohol.2019.04.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 03/25/2019] [Accepted: 04/05/2019] [Indexed: 12/17/2022]
Abstract
Research has shown that opioids are involved in the rewarding effects of ethanol. Neuropeptide FF (NPFF) has been described as an anti-opioid peptide because, in many cases, it inhibits opioid and ethanol effects in rodents. Kissorphin (KSO) is a new peptide derived from kisspeptin-10 with structural similarities to NPFF. This peptide possesses NPFF-like biological activity in vitro. The aim of the current study was to investigate whether KSO (Tyr-Asn-Trp-Asn-Ser-Phe-NH2) influences the acquisition, expression, and reinstatement of ethanol-induced conditioned place preference (ethanol-CPP) in rats. The ethanol-CPP was established (conditioning for 5 days) by intraperitoneal (i.p.) administration of ethanol (1 g/kg, 20%, w/v) using an unbiased procedure. After that, one group of rats was used in final post-conditioning testing (expression of CPP) and the other group received a priming injection of ethanol after 10 days of extinction (reinstatement of CPP). Our experiments showed that KSO, given intravenously (i.v.) at the doses of 1, 3, and 10 nmol before every ethanol administration, inhibited the acquisition and, given acutely before the post-conditioning test or before the priming dose of ethanol, inhibited the expression and reinstatement of ethanol-CPP, respectively, in a dose-dependent manner. KSO given by itself neither induced place preference nor aversion and did not alter locomotor activity and coordination of rats. These results suggest that KSO can alter rewarding/motivational effects of ethanol. These data suggest this peptide possesses an anti-opioid character.
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Affiliation(s)
- Ewa Gibula-Tarlowska
- Department of Pharmacology and Pharmacodynamics, Medical University, Lublin, Poland.
| | - Pawel Grochecki
- Department of Pharmacology and Pharmacodynamics, Medical University, Lublin, Poland
| | - Jerzy Silberring
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Krakow, Poland; Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Jolanta H Kotlinska
- Department of Pharmacology and Pharmacodynamics, Medical University, Lublin, Poland
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Prolactin-Releasing Peptide: Physiological and Pharmacological Properties. Int J Mol Sci 2019; 20:ijms20215297. [PMID: 31653061 PMCID: PMC6862262 DOI: 10.3390/ijms20215297] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/21/2019] [Accepted: 10/23/2019] [Indexed: 12/18/2022] Open
Abstract
Prolactin-releasing peptide (PrRP) belongs to the large RF-amide neuropeptide family with a conserved Arg-Phe-amide motif at the C-terminus. PrRP plays a main role in the regulation of food intake and energy expenditure. This review focuses not only on the physiological functions of PrRP, but also on its pharmacological properties and the actions of its G-protein coupled receptor, GPR10. Special attention is paid to structure-activity relationship studies on PrRP and its analogs as well as to their effect on different physiological functions, mainly their anorexigenic and neuroprotective features and the regulation of the cardiovascular system, pain, and stress. Additionally, the therapeutic potential of this peptide and its analogs is explored.
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Dufour S, Quérat B, Tostivint H, Pasqualini C, Vaudry H, Rousseau K. Origin and Evolution of the Neuroendocrine Control of Reproduction in Vertebrates, With Special Focus on Genome and Gene Duplications. Physiol Rev 2019; 100:869-943. [PMID: 31625459 DOI: 10.1152/physrev.00009.2019] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In humans, as in the other mammals, the neuroendocrine control of reproduction is ensured by the brain-pituitary gonadotropic axis. Multiple internal and environmental cues are integrated via brain neuronal networks, ultimately leading to the modulation of the activity of gonadotropin-releasing hormone (GnRH) neurons. The decapeptide GnRH is released into the hypothalamic-hypophysial portal blood system and stimulates the production of pituitary glycoprotein hormones, the two gonadotropins luteinizing hormone and follicle-stimulating hormone. A novel actor, the neuropeptide kisspeptin, acting upstream of GnRH, has attracted increasing attention in recent years. Other neuropeptides, such as gonadotropin-inhibiting hormone/RF-amide related peptide, and other members of the RF-amide peptide superfamily, as well as various nonpeptidic neuromediators such as dopamine and serotonin also provide a large panel of stimulatory or inhibitory regulators. This paper addresses the origin and evolution of the vertebrate gonadotropic axis. Brain-pituitary neuroendocrine axes are typical of vertebrates, the pituitary gland, mediator and amplifier of brain control on peripheral organs, being a vertebrate innovation. The paper reviews, from molecular and functional perspectives, the evolution across vertebrate radiation of some key actors of the vertebrate neuroendocrine control of reproduction and traces back their origin along the vertebrate lineage and in other metazoa before the emergence of vertebrates. A focus is given on how gene duplications, resulting from either local events or from whole genome duplication events, and followed by paralogous gene loss or conservation, might have shaped the evolutionary scenarios of current families of key actors of the gonadotropic axis.
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Affiliation(s)
- Sylvie Dufour
- Muséum National d'Histoire Naturelle, Biology of Aquatic Organisms and Ecosystems, CNRS, IRD, Sorbonne Université, Université Caen Normandie, Université des Antilles, Paris, France; Université Paris Diderot, Sorbonne Paris Cite, Biologie Fonctionnelle et Adaptative, Paris, France; INSERM U1133, Physiologie de l'axe Gonadotrope, Paris, France; Muséum National d'Histoire Naturelle, Physiologie Moléculaire et Adaptation, Muséum National d'Histoire Naturelle, Paris, France; Université Paris-Saclay, Université Paris-Sud, CNRS, Paris-Saclay Institute of Neuroscience (UMR 9197), Gif-sur-Yvette, France; and Université de Rouen Normandie, Rouen, France
| | - Bruno Quérat
- Muséum National d'Histoire Naturelle, Biology of Aquatic Organisms and Ecosystems, CNRS, IRD, Sorbonne Université, Université Caen Normandie, Université des Antilles, Paris, France; Université Paris Diderot, Sorbonne Paris Cite, Biologie Fonctionnelle et Adaptative, Paris, France; INSERM U1133, Physiologie de l'axe Gonadotrope, Paris, France; Muséum National d'Histoire Naturelle, Physiologie Moléculaire et Adaptation, Muséum National d'Histoire Naturelle, Paris, France; Université Paris-Saclay, Université Paris-Sud, CNRS, Paris-Saclay Institute of Neuroscience (UMR 9197), Gif-sur-Yvette, France; and Université de Rouen Normandie, Rouen, France
| | - Hervé Tostivint
- Muséum National d'Histoire Naturelle, Biology of Aquatic Organisms and Ecosystems, CNRS, IRD, Sorbonne Université, Université Caen Normandie, Université des Antilles, Paris, France; Université Paris Diderot, Sorbonne Paris Cite, Biologie Fonctionnelle et Adaptative, Paris, France; INSERM U1133, Physiologie de l'axe Gonadotrope, Paris, France; Muséum National d'Histoire Naturelle, Physiologie Moléculaire et Adaptation, Muséum National d'Histoire Naturelle, Paris, France; Université Paris-Saclay, Université Paris-Sud, CNRS, Paris-Saclay Institute of Neuroscience (UMR 9197), Gif-sur-Yvette, France; and Université de Rouen Normandie, Rouen, France
| | - Catherine Pasqualini
- Muséum National d'Histoire Naturelle, Biology of Aquatic Organisms and Ecosystems, CNRS, IRD, Sorbonne Université, Université Caen Normandie, Université des Antilles, Paris, France; Université Paris Diderot, Sorbonne Paris Cite, Biologie Fonctionnelle et Adaptative, Paris, France; INSERM U1133, Physiologie de l'axe Gonadotrope, Paris, France; Muséum National d'Histoire Naturelle, Physiologie Moléculaire et Adaptation, Muséum National d'Histoire Naturelle, Paris, France; Université Paris-Saclay, Université Paris-Sud, CNRS, Paris-Saclay Institute of Neuroscience (UMR 9197), Gif-sur-Yvette, France; and Université de Rouen Normandie, Rouen, France
| | - Hubert Vaudry
- Muséum National d'Histoire Naturelle, Biology of Aquatic Organisms and Ecosystems, CNRS, IRD, Sorbonne Université, Université Caen Normandie, Université des Antilles, Paris, France; Université Paris Diderot, Sorbonne Paris Cite, Biologie Fonctionnelle et Adaptative, Paris, France; INSERM U1133, Physiologie de l'axe Gonadotrope, Paris, France; Muséum National d'Histoire Naturelle, Physiologie Moléculaire et Adaptation, Muséum National d'Histoire Naturelle, Paris, France; Université Paris-Saclay, Université Paris-Sud, CNRS, Paris-Saclay Institute of Neuroscience (UMR 9197), Gif-sur-Yvette, France; and Université de Rouen Normandie, Rouen, France
| | - Karine Rousseau
- Muséum National d'Histoire Naturelle, Biology of Aquatic Organisms and Ecosystems, CNRS, IRD, Sorbonne Université, Université Caen Normandie, Université des Antilles, Paris, France; Université Paris Diderot, Sorbonne Paris Cite, Biologie Fonctionnelle et Adaptative, Paris, France; INSERM U1133, Physiologie de l'axe Gonadotrope, Paris, France; Muséum National d'Histoire Naturelle, Physiologie Moléculaire et Adaptation, Muséum National d'Histoire Naturelle, Paris, France; Université Paris-Saclay, Université Paris-Sud, CNRS, Paris-Saclay Institute of Neuroscience (UMR 9197), Gif-sur-Yvette, France; and Université de Rouen Normandie, Rouen, France
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Gutierrez-Mecinas M, Bell A, Polgár E, Watanabe M, Todd AJ. Expression of Neuropeptide FF Defines a Population of Excitatory Interneurons in the Superficial Dorsal Horn of the Mouse Spinal Cord that Respond to Noxious and Pruritic Stimuli. Neuroscience 2019; 416:281-293. [PMID: 31421202 PMCID: PMC6839401 DOI: 10.1016/j.neuroscience.2019.08.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/15/2019] [Accepted: 08/06/2019] [Indexed: 12/16/2022]
Abstract
The great majority of neurons in the superficial dorsal horn of the spinal cord are excitatory interneurons, and these are required for the normal perception of pain and itch. We have previously identified 5 largely non-overlapping populations among these cells, based on the expression of four different neuropeptides (cholecystokinin, neurotensin, neurokinin B and substance P) and of green fluorescent protein driven by the promoter for gastrin-releasing peptide (GRP) in a transgenic mouse line. Another peptide (neuropeptide FF, NPFF) has been identified among the excitatory neurons, and here we have used an antibody against the NPFF precursor (pro-NPFF) and a probe that recognises Npff mRNA to identify and characterise these cells. We show that they are all excitatory interneurons, and are separate from the five populations listed above, accounting for ~ 6% of the excitatory neurons in laminae I-II. By examining phosphorylation of extracellular signal-regulated kinases, we show that the NPFF cells can respond to different types of noxious and pruritic stimulus. Ablation of somatostatin-expressing dorsal horn neurons has been shown to result in a dramatic reduction in mechanical pain sensitivity, while somatostatin released from these neurons is thought to contribute to itch. Since the great majority of the NPFF cells co-expressed somatostatin, these cells may play a role in the perception of pain and itch. NPFF is expressed by around 6% of the excitatory interneurons in the superficial dorsal horn of the mouse spinal cord. NPFF cells differ from those that express substance P, cholecystokinin, neurotensin or neurokinin B. Although some NPFF cells express gastrin-releasing peptide (GRP), they do not express GFP in a GRP-GFP mouse line. Some NPFF cells are activated by noxious or pruritic stimuli.
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Affiliation(s)
- Maria Gutierrez-Mecinas
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Andrew Bell
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Erika Polgár
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Masahiko Watanabe
- Department of Anatomy, Hokkaido University School of Medicine, Sapporo 060-8638, Japan
| | - Andrew J Todd
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK.
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Li Q, Wen H, Li Y, Zhang Z, Zhou Y, Qi X. Evidence for the Direct Effect of the NPFF Peptide on the Expression of Feeding-Related Factors in Spotted Sea Bass ( Lateolabrax maculatus). Front Endocrinol (Lausanne) 2019; 10:545. [PMID: 31447787 PMCID: PMC6691130 DOI: 10.3389/fendo.2019.00545] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 07/22/2019] [Indexed: 01/02/2023] Open
Abstract
Neuropeptide FF (NPFF) is a family member of RF-amide peptides, which are suggested to be involved in the control of vertebrate feeding behavior. However, little is known about the effect of the NPFF peptide on feeding-related processes in basal vertebrates. In this study, four full-length cDNAs, npff, npffr1, npffr2-1, and npffr2-2, were cloned from spotted sea bass and characterized. The conserved NPFF peptide is biologically active because it functionally interacts with different receptors expressed in cultured eukaryotic cells to enhance CRE promoter activity. Tissue distribution analysis showed that the highest npff mRNA expression occurred in the telencephalon, hypothalamus, medulla, gonad and muscle, but the npffrs mRNAs were mainly distributed within the central nervous system (CNS). In situ hybridization (ISH) detected npff-expressing cells in several specific regions ranging across the telencephalon and midbrain to the hypothalamus. Incubation of the spotted sea bass conserved NPFF peptide significantly increased the expression of orexin (orx) and neuropeptide Y (npy) mRNA and decreased the expression of leptin (lep), somatostatin (ss), and cholecystokinin (cck) mRNA in brain cells. Similarly, the conserved NPFF peptide also heightened the expression of gastrin (gas), ghrelin (ghrl), and motilin (mtl) mRNA and significantly reduced the expression of cck mRNA in the intestine and stomach. Taken together, these data suggest that the NPFF peptide may play a stimulating role in regulating feeding-related processes in spotted sea bass.
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25
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Hu KL, Chang HM, Li R, Yu Y, Qiao J. Regulation of LH secretion by RFRP-3 - From the hypothalamus to the pituitary. Front Neuroendocrinol 2019; 52:12-21. [PMID: 29608929 DOI: 10.1016/j.yfrne.2018.03.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 02/12/2018] [Accepted: 03/29/2018] [Indexed: 12/17/2022]
Abstract
RFamide-related peptides (RFRPs) have long been identified as inhibitors of the hypothalamus-pituitary-gonad axis in mammals. However, less progress has been made in the detailed roles of RFRPs in the control of LH secretion. Recent studies have suggested that RFRP-3 neurons in the hypothalamus can regulate the secretion of LH at different levels, including kisspeptin neurons, GnRH neurons, and the pituitary. Additionally, conflicting results regarding the effects of RFRP-3 on these levels exist. In this review, we collect the latest evidence related to the effects of RFRP-3 neurons in regulating LH secretion by acting on kisspeptin neurons, GnRH neurons, and the pituitary and discuss the potential role of the timely reduction of RFRP-3 signaling in the modulation of the preovulatory LH surge.
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Affiliation(s)
- Kai-Lun Hu
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Hsun-Ming Chang
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Department of Obstetrics and Gynaecology, University of British Columbia, British Columbia Children's Hospital Research Institute, Vancouver, British Columbia V5Z 4H4, Canada
| | - Rong Li
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Yang Yu
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China.
| | - Jie Qiao
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
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26
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Diet-induced adaptive thermogenesis requires neuropeptide FF receptor-2 signalling. Nat Commun 2018; 9:4722. [PMID: 30413707 PMCID: PMC6226433 DOI: 10.1038/s41467-018-06462-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 09/07/2018] [Indexed: 11/24/2022] Open
Abstract
Excess caloric intake results in increased fat accumulation and an increase in energy expenditure via diet-induced adaptive thermogenesis; however, the underlying mechanisms controlling these processes are unclear. Here we identify the neuropeptide FF receptor-2 (NPFFR2) as a critical regulator of diet-induced thermogenesis and bone homoeostasis. Npffr2−/− mice exhibit a stronger bone phenotype and when fed a HFD display exacerbated obesity associated with a failure in activating brown adipose tissue (BAT) thermogenic response to energy excess, whereas the activation of cold-induced BAT thermogenesis is unaffected. NPFFR2 signalling is required to maintain basal arcuate nucleus NPY mRNA expression. Lack of NPFFR2 signalling leads to a decrease in BAT thermogenesis under HFD conditions with significantly lower UCP-1 and PGC-1α levels in the BAT. Together, these data demonstrate that NPFFR2 signalling promotes diet-induced thermogenesis via a novel hypothalamic NPY-dependent circuitry thereby coupling energy homoeostasis with energy partitioning to adipose and bone tissue. Excess caloric intake leads to increased thermogenesis in brown adipose tissue, to limit weight gain. Here, the authors show that neuropeptide FF receptor-2 signalling promotes thermogenesis via control of NPY expression in the arcuate nucleus, and that it absence in mice leads to a failure of activation of diet-induced thermogenesis and the development of exacerbated obesity.
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27
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Nourbakhsh F, Atabaki R, Roohbakhsh A. The role of orphan G protein-coupled receptors in the modulation of pain: A review. Life Sci 2018; 212:59-69. [PMID: 30236869 DOI: 10.1016/j.lfs.2018.09.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 09/04/2018] [Accepted: 09/14/2018] [Indexed: 12/16/2022]
Abstract
G protein-coupled receptors (GPCRs) comprise a large number of receptors. Orphan GPCRs are divided into six families. These groups contain orphan receptors for which the endogenous ligands are unclear. They have various physiological effects in the body and have the potential to be used in the treatment of different diseases. Considering their important role in the central and peripheral nervous system, their role in the treatment of pain has been the subject of some recent studies. At present, there are effective therapeutics for the treatment of pain including opioid medications and non-steroidal anti-inflammatory drugs. However, the side effects of these drugs and the risks of tolerance and dependence remain a major problem. In addition, neuropathic pain is a condition that does not respond to currently available analgesic medications well. In the present review article, we aimed to review the most recent findings regarding the role of orphan GPCRs in the treatment of pain. Accordingly, based on the preclinical findings, the role of GPR3, GPR7, GPR8, GPR18, GPR30, GPR35, GPR40, GPR55, GPR74, and GPR147 in the treatment of pain was discussed. The present study highlights the role of orphan GPCRs in the modulation of pain and implies that these receptors are potential new targets for finding better and more efficient therapeutics for the management of pain particularly neuropathic pain.
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Affiliation(s)
- Fahimeh Nourbakhsh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Rabi Atabaki
- Rayan Center for Neuroscience & Behavior, Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Ali Roohbakhsh
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Tsutsui K, Osugi T, Son YL, Ubuka T. Review: Structure, function and evolution of GnIH. Gen Comp Endocrinol 2018; 264:48-57. [PMID: 28754274 DOI: 10.1016/j.ygcen.2017.07.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/21/2017] [Accepted: 07/25/2017] [Indexed: 12/27/2022]
Abstract
Neuropeptides that possess the Arg-Phe-NH2 motif at their C-termini (i.e., RFamide peptides) have been characterized in the nervous system of both invertebrates and vertebrates. In vertebrates, RFamide peptides make a family and consist of the groups of gonadotropin-inhibitory hormone (GnIH), neuropeptide FF (NPFF), prolactin-releasing peptide (PrRP), kisspeptin (kiss1 and kiss2), and pyroglutamylated RFamide peptide/26RFamide peptide (QRFP/26RFa). It now appears that these vertebrate RFamide peptides exert important neuroendocrine, behavioral, sensory, and autonomic functions. In 2000, GnIH was discovered as a novel hypothalamic RFamide peptide inhibiting gonadotropin release in quail. Subsequent studies have demonstrated that GnIH acts on the brain and pituitary to modulate reproductive physiology and behavior across vertebrates. To clarify the origin and evolution of GnIH, the existence of GnIH was investigated in agnathans, the most ancient lineage of vertebrates, and basal chordates, such as tunicates and cephalochordates (represented by amphioxus). This review first summarizes the structure and function of GnIH and other RFamide peptides, in particular NPFF having a similar C-terminal structure of GnIH, in vertebrates. Then, this review describes the evolutionary origin of GnIH based on the studies in agnathans and basal chordates.
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Affiliation(s)
- Kazuyoshi Tsutsui
- Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life Science, Waseda University, Tokyo 162-8480, Japan.
| | - Tomohiro Osugi
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, Kyoto 619-0284, Japan
| | - You Lee Son
- Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life Science, Waseda University, Tokyo 162-8480, Japan
| | - Takayoshi Ubuka
- Brain Research Institute Monash Sunway, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Selangor 47500, Malaysia
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30
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Abdellah N, van Remoortel S, Mohey-Elsaeed O, Mustafa MN, Ahmed YA, Timmermans JP, Buckinx R. Neuropeptide AF Induces Piecemeal Degranulation in Murine Mucosal Mast Cells: A New Mediator in Neuro-Immune Communication in the Intestinal Lamina Propria? Anat Rec (Hoboken) 2018; 301:1103-1114. [DOI: 10.1002/ar.23780] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/25/2017] [Accepted: 12/11/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Nada Abdellah
- Histology Department, Faculty of Veterinary Medicine; Sohag University; Sohag Egypt
- Laboratory of Cell Biology & Histology, University of Antwerp; Antwerp Belgium
| | | | - Omnia Mohey-Elsaeed
- Laboratory of Cell Biology & Histology, University of Antwerp; Antwerp Belgium
- Department of Cytology and Histology, Faculty of Veterinary Medicine; Cairo University; Giza 12122 Egypt
| | - Mohamed-Nabil Mustafa
- Department of Anatomy and Histology, Faculty of Veterinary Medicine; Assiut University; Assiut Egypt
| | - Yasser A. Ahmed
- Department of Histology, Faculty of Veterinary Medicine; South Valley University; Qena Egypt
| | | | - Roeland Buckinx
- Laboratory of Cell Biology & Histology, University of Antwerp; Antwerp Belgium
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The new kisspeptin derivative - kissorphin (KSO) - attenuates acute hyperlocomotion and sensitization induced by ethanol and morphine in mice. Alcohol 2017; 64:45-53. [PMID: 28965655 DOI: 10.1016/j.alcohol.2017.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 04/10/2017] [Accepted: 04/24/2017] [Indexed: 12/25/2022]
Abstract
Kissorphin (KSO) is a new peptide derived from kisspeptin-10. This peptide possesses neuropeptide FF (NPFF)-like biological activity in vitro; NPFF, in many cases, inhibits opioid and ethanol effects in rodents. Therefore, the current study explored the influence of KSO on acute ethanol- and morphine-induced hyperactivity, and on the development and expression of locomotor sensitization induced by these drugs. In the present study, sensitization to locomotor effects was induced by repeated exposure to ethanol (2.4 g/kg, intraperitoneally [i.p.], 1 × 4 days) or morphine (10 mg/kg, subcutaneously [s.c.], 1 × 7 days). We found that KSO (1-10 nmol/300 μL, intravenously [i.v.]) did not have an impact on locomotor activity of naïve mice. However, it reduced both acute ethanol- (10 nmol/300 μL) and morphine-induced hyperactivity (3 and 10 nmol/300 μL). Pretreatment of animals with KSO (10 nmol/300 μL), before every ethanol or morphine injection during development of sensitization or before the ethanol or morphine challenge, attenuated the development, as well as the expression of locomotor sensitization to both substances. Moreover, prior administration of the NPFF receptor antagonist RF9 (10 nmol/300 μL, i.v.) inhibited the ability of KSO (10 nmol/300 μL) to reduce the expression of ethanol and morphine sensitization. KSO given alone, at all used doses, did not influence the motor coordination measured via the rotarod test. The results from this study show that KSO effectively attenuated acute and repeated effects of ethanol and morphine. Thus, KSO possesses NPFF-like anti-opioid activity in these behavioral studies.
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32
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Leprince J, Bagnol D, Bureau R, Fukusumi S, Granata R, Hinuma S, Larhammar D, Primeaux S, Sopkova-de Oliveiras Santos J, Tsutsui K, Ukena K, Vaudry H. The Arg-Phe-amide peptide 26RFa/glutamine RF-amide peptide and its receptor: IUPHAR Review 24. Br J Pharmacol 2017; 174:3573-3607. [PMID: 28613414 DOI: 10.1111/bph.13907] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 05/30/2017] [Accepted: 06/05/2017] [Indexed: 12/21/2022] Open
Abstract
The RFamide neuropeptide 26RFa was first isolated from the brain of the European green frog on the basis of cross-reactivity with antibodies raised against bovine neuropeptide FF (NPFF). 26RFa and its N-terminally extended form glutamine RF-amide peptide (QRFP) have been identified as cognate ligands of the former orphan receptor GPR103, now renamed glutamine RF-amide peptide receptor (QRFP receptor). The 26RFa/QRFP precursor has been characterized in various mammalian and non-mammalian species. In the brain of mammals, including humans, 26RFa/QRFP mRNA is almost exclusively expressed in hypothalamic nuclei. The 26RFa/QRFP transcript is also present in various organs especially in endocrine glands. While humans express only one QRFP receptor, two isoforms are present in rodents. The QRFP receptor genes are widely expressed in the CNS and in peripheral tissues, notably in bone, heart, kidney, pancreas and testis. Structure-activity relationship studies have led to the identification of low MW peptidergic agonists and antagonists of QRFP receptor. Concurrently, several selective non-peptidic antagonists have been designed from high-throughput screening hit optimization. Consistent with the widespread distribution of QRFP receptor mRNA and 26RFa binding sites, 26RFa/QRFP exerts a large range of biological activities, notably in the control of energy homeostasis, bone formation and nociception that are mediated by QRFP receptor or NPFF2. The present report reviews the current knowledge concerning the 26RFa/QRFP-QRFP receptor system and discusses the potential use of selective QRFP receptor ligands for therapeutic applications.
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Affiliation(s)
- Jérôme Leprince
- INSERM U1239, Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, Normandy University, Rouen, France
| | - Didier Bagnol
- CNS Drug Discovery, Arena Pharmaceuticals Inc., San Diego, CA, USA
| | - Ronan Bureau
- Normandy Centre for Studies and Research on Medicines (CERMN), Normandy University, Caen, France
| | - Shoji Fukusumi
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Riccarda Granata
- Laboratory of Molecular and Cellular Endocrinology, Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Torino, Torino, Italy
| | - Shuji Hinuma
- Department of Food and Nutrition, Faculty of Human Life Science, Senri Kinran University, Suita-City, Osaka, Japan
| | - Dan Larhammar
- Department of Neuroscience, Unit of Pharmacology, Uppsala University, Uppsala, Sweden
| | - Stefany Primeaux
- Department of Physiology, Joint Diabetes, Endocrinology & Metabolism Center, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | | | - Kazuyoshi Tsutsui
- Laboratory of Integrative Brain Sciences, Department of Biology, Waseda University, Center for Medical Life Science, Tokyo, Japan
| | - Kazuyoshi Ukena
- Section of Behavioral Sciences, Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Japan
| | - Hubert Vaudry
- INSERM U1239, Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, Normandy University, Rouen, France
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Lin YT, Yu YL, Hong WC, Yeh TS, Chen TC, Chen JC. NPFFR2 Activates the HPA Axis and Induces Anxiogenic Effects in Rodents. Int J Mol Sci 2017; 18:ijms18081810. [PMID: 28825666 PMCID: PMC5578197 DOI: 10.3390/ijms18081810] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/16/2017] [Accepted: 08/18/2017] [Indexed: 01/01/2023] Open
Abstract
Neuropeptide FF (NPFF) belongs to the RFamide family and is known as a morphine-modulating peptide. NPFF regulates various hypothalamic functions through two receptors, NPFFR1 and NPFFR2. The hypothalamic-pituitary-adrenal (HPA) axis participates in physiological stress response by increasing circulating glucocorticoid levels and modulating emotional responses. Other RFamide peptides, including neuropeptide AF, neuropeptide SF and RFamide related peptide also target NPFFR1 or NPFFR2, and have been reported to activate the HPA axis and induce anxiety- or depression-like behaviors. However, little is known about the action of NPFF on HPA axis activity and anxiety-like behaviors, and the role of the individual receptors remains unclear. In this study, NPFFR2 agonists were used to examine the role of NPFFR2 in activating the HPA axis in rodents. Administration of NPFFR2 agonists, dNPA (intracerebroventricular, ICV) and AC-263093 (intraperitoneal, IP), time-dependently (in rats) and dose-dependently (in mice) increased serum corticosteroid levels and the effects were counteracted by the NPFF receptor antagonist, RF9 (ICV), as well as corticotropin-releasing factor (CRF) antagonist, α-helical CRF(9-41) (intravenous, IV). Treatment with NPFFR2 agonist (AC-263093, IP) increased c-Fos protein expression in the hypothalamic paraventricular nucleus and induced an anxiogenic effect, which was evaluated in mice using an elevated plus maze. These findings reveal, for the first time, that the direct action of hypothalamic NPFFR2 stimulates the HPA axis and triggers anxiety-like behaviors.
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Affiliation(s)
- Ya-Tin Lin
- Graduate Institute of Biomedical Sciences, Department of Physiology and Pharmacology, Chang Gung University, No. 259 Wenhwa 1st Road, Guishan, Taoyuan 333, Taiwan.
| | - Yu-Lian Yu
- Department of Biomedical Sciences, Chang Gung University, Taoyuan 333, Taiwan.
| | - Wei-Chen Hong
- Department of Biomedical Sciences, Chang Gung University, Taoyuan 333, Taiwan.
| | - Ting-Shiuan Yeh
- Department of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
| | - Ting-Chun Chen
- Department of Biomedical Sciences, Chang Gung University, Taoyuan 333, Taiwan.
| | - Jin-Chung Chen
- Graduate Institute of Biomedical Sciences, Department of Physiology and Pharmacology, Chang Gung University, No. 259 Wenhwa 1st Road, Guishan, Taoyuan 333, Taiwan.
- Neuroscience Research Center, Chang Gung Memorial Hospital, No. 5, Fusing St., Guishan, Taoyuan 333, Taiwan.
- Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan.
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Lin YT, Liu HL, Day YJ, Chang CC, Hsu PH, Chen JC. Activation of NPFFR2 leads to hyperalgesia through the spinal inflammatory mediator CGRP in mice. Exp Neurol 2017; 291:62-73. [DOI: 10.1016/j.expneurol.2017.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 01/25/2017] [Accepted: 02/01/2017] [Indexed: 01/22/2023]
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Kovács A, László K, Zagoracz O, Ollmann T, Péczely L, Gálosi R, Lénárd L. Effects of RFamide-related peptide-1 (RFRP-1) microinjections into the central nucleus of amygdala on passive avoidance learning in rats. Neuropeptides 2017; 62:81-86. [PMID: 27993374 DOI: 10.1016/j.npep.2016.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 10/31/2016] [Accepted: 12/11/2016] [Indexed: 11/16/2022]
Abstract
The amygdaloid body (AMY) plays an important role in memory, learning and reward-related processes. RFRP-1 immunoreactive fibers and NPFF receptors were identified in the AMY, and previously we verified that RFRP-1 infused into the central nucleus of AMY (CeA) induced place preference. The aim of the present study was to examine the possible effects of RFRP-1 in the CeA on passive avoidance learning. Male Wistar rats were examined in two-compartment passive avoidance paradigm. Animals were shocked with 0.5mA current and subsequently were microinjected bilaterally with 50ng or 100ng RFRP-1 in volume of 0.4μl, or 20ng NPFF receptor antagonist RF9 (ANT) alone, or antagonist 15min before 50ng RFRP-1 treatments into the CeA. Fifty nanogram dose of RFRP-1 significantly increased the step-through latency time, the 100ng RFRP-1 and the ANT alone were ineffective. The effect of 50ng RFRP-1 was eliminated by the ANT pretreatment. Our results suggest that intraamygdaloid RFRP-1 enhances learning processes and memory in aversive situations and this effect can specifically be prevented by ANT pretreatment.
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Affiliation(s)
- Anita Kovács
- Institute of Physiology, Pécs University Medical School, Hungary
| | - Kristóf László
- Institute of Physiology, Pécs University Medical School, Hungary
| | - Olga Zagoracz
- Institute of Physiology, Pécs University Medical School, Hungary
| | - Tamás Ollmann
- Institute of Physiology, Pécs University Medical School, Hungary
| | - László Péczely
- Institute of Physiology, Pécs University Medical School, Hungary
| | - Rita Gálosi
- Institute of Physiology, Pécs University Medical School, Hungary
| | - László Lénárd
- Institute of Physiology, Pécs University Medical School, Hungary; Molecular Neurophysiology Research Group, Pécs University, Szentágothai Research Center, Pécs, Hungary.
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Yu HP, Zhang N, Zhang T, Wang ZL, Li N, Tang HH, Zhang R, Zhang MN, Xu B, Fang Q, Wang R. Activation of NPFF 2 receptor stimulates neurite outgrowth in Neuro 2A cells through activation of ERK signaling pathway. Peptides 2016; 86:24-32. [PMID: 27669639 DOI: 10.1016/j.peptides.2016.09.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 09/21/2016] [Accepted: 09/22/2016] [Indexed: 10/21/2022]
Abstract
Neurite outgrowth is an important process in neural regeneration and plasticity, especially after neural injury, and recent evidence indicates that several Gαi/o protein-coupled receptors play an important role in neurite outgrowth. The neuropeptide (NP)FF system contains two Gαi/o protein-coupled receptors, NPFF1 and NPFF2 receptors, which are mainly distributed in the central nervous system. The aim of the present study was to determine whether the NPFF system is involved in neurite outgrowth in Neuro 2A cells. We showed that Neuro 2A cells endogenously expressed NPFF2 receptor, and the NPFF2 receptor agonist dNPA inhibited cyclic adenosine monophosphate (cAMP) production stimulated by forskolin in Neuro 2A cells. We also demonstrated that NPFF and dNPA dose-dependently induced neurite outgrowth in Neuro 2A cells, which was completely abolished by the NPFF receptor antagonist RF9. Pretreatment with mitogen-activated protein kinase inhibitors PD98059 and U0126 decreased dNPA-induced neurite outgrowth. In addition, dNPA increased phosphorylation of extracellular signal-regulated kinase (ERK) in Neuro 2A cells, which was completely antagonized by pretreatment with U0126. Our results suggest that activation of NPFF2 receptor stimulates neurite outgrowth in Neuro 2A cells through activation of the ERK signaling pathway. Moreover, NPFF2 receptor may be a potential therapeutic target for neural injury and degeneration in the future.
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Affiliation(s)
- Hong-Ping Yu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Nan Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Ting Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Zi-Long Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Ning Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Hong-Hai Tang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Run Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Meng-Na Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Biao Xu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China
| | - Quan Fang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China.
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, 199 Donggang West Road, Lanzhou, 730000, PR China.
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Kim JS. What's in a Name? Roles of RFamide-Related Peptides Beyond Gonadotrophin Inhibition. J Neuroendocrinol 2016; 28. [PMID: 27369805 DOI: 10.1111/jne.12407] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/21/2016] [Accepted: 06/23/2016] [Indexed: 12/29/2022]
Abstract
RFamide-related peptides (RFRPs) have been heavily implicated in the control of reproductive function subsequent to their discovery more than 16 years ago. However, recent studies using genetic and pharmacological tools have challenged their importance in regulating the hypothalamic-pituitary-gonadal axis. It is generally accepted that RFRPs act as part of a wider RFamide system, which involves two receptors, called the neuropeptide FF receptors (NPFFR1 and R2), and includes the closely-related neuropeptide NPFF. NPFF has been studied ever since the 1980s and many of the functions of NPFF are also shared by RFRPs. The current review questions whether these functions of NPFF are indeed specific to just NPFF alone and presents evidence from both neuroendocrine and pharmacological perspectives. Furthermore, recently emerging new functions of RFRPs are discussed with the overall goal of clarifying the functions of RFRPs beyond the hypothalamic-pituitary-gonadal axis.
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Affiliation(s)
- J S Kim
- Centre for Neuroendocrinology and Department of Anatomy, University of Otago, Dunedin, New Zealand
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Wang ZL, Li N, Wang P, Tang HH, Han ZL, Song JJ, Li XH, Yu HP, Zhang T, Zhang R, Xu B, Zhang MN, Fang Q, Wang R. Pharmacological characterization of EN-9, a novel chimeric peptide of endomorphin-2 and neuropeptide FF that produces potent antinociceptive activity and limited tolerance. Neuropharmacology 2016; 108:364-72. [DOI: 10.1016/j.neuropharm.2016.03.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 03/08/2016] [Accepted: 03/08/2016] [Indexed: 01/19/2023]
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Chronic activation of NPFFR2 stimulates the stress-related depressive behaviors through HPA axis modulation. Psychoneuroendocrinology 2016; 71:73-85. [PMID: 27243477 DOI: 10.1016/j.psyneuen.2016.05.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 05/11/2016] [Accepted: 05/13/2016] [Indexed: 01/16/2023]
Abstract
Neuropeptide FF (NPFF) is a morphine-modulating peptide that regulates the analgesic effect of opioids, and also controls food consumption and cardiovascular function through its interaction with two cognate receptors, NPFFR1 and NPFFR2. In the present study, we explore a novel modulatory role for NPFF-NPFFR2 in stress-related depressive behaviors. In a mouse model of chronic mild stress (CMS)-induced depression, the expression of NPFF significantly increased in the hypothalamus, hippocampus, medial prefrontal cortex (mPFC) and amygdala. In addition, transgenic (Tg) mice over-expressing NPFFR2 displayed clear depression and anxiety-like behaviors with hyperactivity in the hypothalamic-pituitary-adrenal (HPA) axis, reduced expression of glucocorticoid receptor (GR) and neurogenesis in the hippocampus. Furthermore, acute treatment of NPFFR2 agonists in wild-type (WT) mice enhanced the activity of the HPA axis, and chronic administration resulted in depressive and anxiety-like behaviors. Chronic stimulation of NPFFR2 also decreased the expression of hippocampal GR and led to persistent activation of the HPA axis. Strikingly, bilateral intra-paraventricular nucleus (PVN) injection of NPFFR2 shRNA predominately inhibits the depressive-like behavior in CMS-exposed mice. Antidepressants, fluoxetine and ketamine, effectively relieved the depressive behaviors of NPFFR2-Tg mice. We speculate that persistent NPFFR2 activation, in particular in the hypothalamus, up-regulates the HPA axis and results in long-lasting increases in circulating corticosterone (CORT), consequently damaging hippocampal function. This novel role of NPFFR2 in regulating the HPA axis and hippocampal function provides a new avenue for combating depression and anxiety-like disorder.
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Mishina YM, Wilson CJ, Bruett L, Smith JJ, Stoop-Myer C, Jong S, Amaral LP, Pedersen R, Lyman SK, Myer VE, Kreider BL, Thompson CM. Multiplex GPCR Assay in Reverse Transfection Cell Microarrays. ACTA ACUST UNITED AC 2016; 9:196-207. [PMID: 15140381 DOI: 10.1177/1087057103261880] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
G protein-coupled receptors (GPCRs) are a superfamily of proteins that include some of the most important drug targets in the pharmaceutical industry. Despite the success of this group of drugs, there remains a need to identify GPCR-targeted drugs with greater selectivity, to develop screening assays for validated targets, and to identify ligands for orphan receptors. To address these challenges, the authors have created a multiplexed GPCR assay that measures greater than 3000 receptor: ligand interactions in a single microplate. The multiplexed assay is generated by combining reverse transfection in a 96-well plate format with a calcium flux readout. This assay quantitatively measures receptor activation and inhibition and permits the determination of compound potency and selectivity for entire families of GPCRs in parallel. To expand the number of GPCR targets that may be screened in this system, receptors are cotransfected with plasmids encoding a promiscuous G protein, permitting the analysis of receptors that do not normally mobilize intracellular calcium upon activation. The authors demonstrate the utility of reverse transfection cell microarrays to GPCR-targeted drug discovery with examples of ligand selectivity screening against a panel of GPCRs as well as dose-dependent titrations of selected agonists and antagonists.
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Li N, Han ZL, Wang ZL, Xing YH, Sun YL, Li XH, Song JJ, Zhang T, Zhang R, Zhang MN, Xu B, Fang Q, Wang R. BN-9, a chimeric peptide with mixed opioid and neuropeptide FF receptor agonistic properties, produces nontolerance-forming antinociception in mice. Br J Pharmacol 2016; 173:1864-80. [PMID: 27018797 DOI: 10.1111/bph.13489] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 03/16/2016] [Accepted: 03/22/2016] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND AND PURPOSE Neuropeptide FF (NPFF) behaves as an endogenous opioid-modulating peptide. In the present study, the opioid and NPFF pharmacophore-containing chimeric peptide BN-9 was synthesized and pharmacologically characterized. EXPERIMENTAL APPROACH Agonist activities of BN-9 at opioid and NPFF receptors were characterized in in vitro cAMP assays. Antinociceptive activities of BN-9 were evaluated in the mouse tail-flick and formalin tests. Furthermore, its side effects were investigated in rotarod, antinociceptive tolerance, reward and gastrointestinal transit tests. KEY RESULTS BN-9 acted as a novel multifunctional agonist at μ, δ, κ, NPFF1 and NPFF2 receptors in cAMP assays. In the tail-flick test, BN-9 produced dose-related antinociception and was approximately equipotent to morphine; this antinociception was blocked by μ and κ receptor antagonists, but not by the δ receptor antagonist. In the formalin test, supraspinal administration of BN-9 produced significant analgesia. Notably, repeated administration of BN-9 produced analgesia without loss of potency over 8 days. In contrast, repeated i.c.v. co-administration of BN-9 with the NPFF receptor antagonist RF9 produced significant antinociceptive tolerance. Furthermore, i.c.v. BN-9 induced conditioned place preference. When given by the same routes, BN-9 had a more than eightfold higher ED50 value for gastrointestinal transit inhibition compared with the ED50 values for antinociception. CONCLUSIONS AND IMPLICATIONS BN-9 produced a robust, nontolerance-forming analgesia with limited inhibition of gastrointestinal transit. As BN-9 is able to activate both opioid and NPFF systems, this provides an interesting approach for the development of novel analgesics with minimal side effects.
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Affiliation(s)
- Ning Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Zheng-Lan Han
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Zi-Long Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Yan-Hong Xing
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Yu-Long Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Xu-Hui Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jing-Jing Song
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Ting Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Run Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Meng-Na Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Biao Xu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Quan Fang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
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Abstract
Opioid analgesics continue to be the mainstay of pharmacologic treatment of moderate to severe pain. Many patients, particularly those suffering from chronic pain, require chronic high-dose analgesic therapy. Achieving clinical efficacy and tolerability of such treatment regimens is hampered by the appearance of opioid-induced side effects such as tolerance, hyperalgesia and withdrawal syndrome. Among the therapeutic options to improve the opioid effectiveness, this current review focuses on strategies combining opioids to other drugs that can modulate opioid-mediated effects. We will discuss about experimental evidences reported for several potential opioid adjuvants, including N-methyl-d-aspartate receptor antagonists, 5-HT7 agonists, sigma-1 antagonists, I2-R ligands, cholecystokinin antagonists, neuropeptide FF-R antagonists and toll-like receptor 4 antagonists.
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Quillet R, Ayachi S, Bihel F, Elhabazi K, Ilien B, Simonin F. RF-amide neuropeptides and their receptors in Mammals: Pharmacological properties, drug development and main physiological functions. Pharmacol Ther 2016; 160:84-132. [PMID: 26896564 DOI: 10.1016/j.pharmthera.2016.02.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
RF-amide neuropeptides, with their typical Arg-Phe-NH2 signature at their carboxyl C-termini, belong to a lineage of peptides that spans almost the entire life tree. Throughout evolution, RF-amide peptides and their receptors preserved fundamental roles in reproduction and feeding, both in Vertebrates and Invertebrates. The scope of this review is to summarize the current knowledge on the RF-amide systems in Mammals from historical aspects to therapeutic opportunities. Taking advantage of the most recent findings in the field, special focus will be given on molecular and pharmacological properties of RF-amide peptides and their receptors as well as on their implication in the control of different physiological functions including feeding, reproduction and pain. Recent progress on the development of drugs that target RF-amide receptors will also be addressed.
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Affiliation(s)
- Raphaëlle Quillet
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, Illkirch, France
| | - Safia Ayachi
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, Illkirch, France
| | - Frédéric Bihel
- Laboratoire Innovation Thérapeutique, UMR 7200 CNRS, Université de Strasbourg, Illkirch, France
| | - Khadija Elhabazi
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, Illkirch, France
| | - Brigitte Ilien
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, Illkirch, France
| | - Frédéric Simonin
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, Illkirch, France.
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Lin Y, Kao S, Day Y, Chang C, Chen J. Altered nociception and morphine tolerance in neuropeptide FF receptor type 2 over-expressing mice. Eur J Pain 2015; 20:895-906. [DOI: 10.1002/ejp.814] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Y.T. Lin
- Department of Physiology and Pharmacology; Graduate Institute of Biomedical Sciences; Chang Gung University; Tao-Yuan Taiwan
| | - S.C. Kao
- Department of Anesthesiology; Chang Gung Memorial Hospital; Tao-Yuan Taiwan
| | - Y.J. Day
- Department of Anesthesiology; Chang Gung Memorial Hospital; Tao-Yuan Taiwan
| | - C.C. Chang
- Department of Chemistry; Fu Jen Catholic University; New Taipei City Taiwan
| | - J.C. Chen
- Department of Physiology and Pharmacology; Graduate Institute of Biomedical Sciences; Chang Gung University; Tao-Yuan Taiwan
- Healthy Aging Research Center; Chang Gung University; Tao-Yuan Taiwan
- Neuroscience Research Center; Chang Gung Memorial Hospital; Tao-Yuan Taiwan
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Rouméas L, Humbert JP, Schneider S, Doebelin C, Bertin I, Schmitt M, Bourguignon JJ, Simonin F, Bihel F. Effects of systematic N-terminus deletions and benzoylations of endogenous RF-amide peptides on NPFF1R, NPFF2R, GPR10, GPR54 and GPR103. Peptides 2015. [PMID: 26211894 DOI: 10.1016/j.peptides.2015.07.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Mammalian RF-amide peptides including RF-amide-related peptides-1 and -3, neuropeptides AF and FF, Prolactin releasing peptides, Kisspeptins and RFa peptides are currently considered endogenous peptides for the GPCRs NPFF1R, NPFF2R, GPR10, GPR54 and GPR103, respectively. While NPFF1R and NPFF2R displayed high affinity for all the RF-amide peptides, GPR10, GPR54 and GPR103 only bind their cognate ligands. Through a systematic and sequential N-terminus deletion and benzoylation of either RF-amide neuropeptide (RFRP-3, NPFF, Kp-10, PrRP20, and 26RFa), we report the corresponding impact on affinity and activity towards all the RF-amide receptors (NPFF1R, NPFF2R, GPR10, GPR54 and GPR103). Our results highlight the difficulty to develop selective peptide ligands for GPR10, GPR54 or GPR103 without a modification of the C-terminus RF-amide signature, but open the door to the design of new RF-amide peptides acting as agonist for one receptor and antagonist for another one.
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Affiliation(s)
- Laurent Rouméas
- University of Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Jean-Paul Humbert
- University of Strasbourg, CNRS, UMR7242, ESBS, 67412 Illkirch Graffenstaden, France
| | - Séverine Schneider
- University of Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Christelle Doebelin
- University of Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Isabelle Bertin
- University of Strasbourg, CNRS, UMR7242, ESBS, 67412 Illkirch Graffenstaden, France
| | - Martine Schmitt
- University of Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Jean-Jacques Bourguignon
- University of Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Frédéric Simonin
- University of Strasbourg, CNRS, UMR7242, ESBS, 67412 Illkirch Graffenstaden, France.
| | - Frédéric Bihel
- University of Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France.
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Bihel F, Humbert JP, Schneider S, Bertin I, Wagner P, Schmitt M, Laboureyras E, Petit-Demoulière B, Schneider E, Mollereau C, Simonnet G, Simonin F, Bourguignon JJ. Development of a peptidomimetic antagonist of neuropeptide FF receptors for the prevention of opioid-induced hyperalgesia. ACS Chem Neurosci 2015; 6:438-45. [PMID: 25588572 DOI: 10.1021/cn500219h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Through the development of a new class of unnatural ornithine derivatives as bioisosteres of arginine, we have designed an orally active peptidomimetic antagonist of neuropeptide FF receptors (NPFFR). Systemic low-dose administration of this compound to rats blocked opioid-induced hyperalgesia, without any apparent side-effects. Interestingly, we also observed that this compound potentiated opioid-induced analgesia. This unnatural ornithine derivative provides a novel therapeutic approach for both improving analgesia and reducing hyperalgesia induced by opioids in patients being treated for chronic pain.
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Affiliation(s)
- Frédéric Bihel
- University of
Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Jean-Paul Humbert
- University of
Strasbourg, CNRS, UMR7242, ESBS, 67412 Illkirch Graffenstaden, France
| | - Séverine Schneider
- University of
Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Isabelle Bertin
- University of
Strasbourg, CNRS, UMR7242, ESBS, 67412 Illkirch Graffenstaden, France
| | - Patrick Wagner
- University of
Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Martine Schmitt
- University of
Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
| | - Emilie Laboureyras
- University of Bordeaux
Ségalen, INCIA, CNRS UMR5287, 33076 Bordeaux, France
| | | | | | | | - Guy Simonnet
- University of Bordeaux
Ségalen, INCIA, CNRS UMR5287, 33076 Bordeaux, France
| | - Frédéric Simonin
- University of
Strasbourg, CNRS, UMR7242, ESBS, 67412 Illkirch Graffenstaden, France
| | - Jean-Jacques Bourguignon
- University of
Strasbourg, CNRS, UMR7200, Faculty of pharmacy, 67400 Illkirch Graffenstaden, France
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Sun Y, Chen X, Chen Z, Ma X, Li D, Shang P, Qian A. Neuropeptide FF attenuates RANKL-induced differentiation of macrophage-like cells into osteoclast-like cells. Arch Oral Biol 2015; 60:282-92. [DOI: 10.1016/j.archoralbio.2014.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 09/28/2014] [Accepted: 11/08/2014] [Indexed: 01/31/2023]
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Shahjahan M, Doi H, Ando H. Differential expression patterns of PQRFamide peptide and its two receptor genes in the brain and pituitary of grass puffer during the reproductive cycle. Gen Comp Endocrinol 2015; 210:152-60. [PMID: 25034121 DOI: 10.1016/j.ygcen.2014.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 07/01/2014] [Accepted: 07/05/2014] [Indexed: 12/19/2022]
Abstract
Pain-modulatory neuropeptides, PQRFamide (PQRFa) peptides, have recently been implicated in the regulation of reproduction in fish. As a first step toward investigating the role of PQRFa peptides on reproductive function in the grass puffer Takifugu niphobles, which is a semilunar spawner, we cloned genes encoding PQRFa peptide precursor (pqrfa) and its two types of receptors (pqrfa-r1 and pqrfa-r2), and examined changes in their expression levels in the brain and pituitary over several months during the reproductive cycle. The grass puffer PQRFa peptide precursor of 126 amino acid residues contains two putative PQRFa peptides, PQRFa-1 and PQRFa-2, which correspond to NPFF and NPAF in other vertebrates, respectively. The grass puffer PQRFa-R1 and PQRFa-R2 consist of 426 and 453 amino acid residues, respectively, and contain distinct characteristics of G-protein coupled receptors. These three genes were exclusively expressed in the brain and pituitary. The expression levels of pqrfa and pqrfa-r1 were significantly increased during the late stage of sexual maturation, but low in the spawning fish just after releasing sperms and eggs. Therefore, the grass puffer PQRFa peptide may have a role in the late stage of sexual maturation before spawning via PQRFa-R1. In contrast, the pqrfa-r2 expression showed maximum levels in the spawning fish and in the post-spawning period. The present results provide fundamental data suggesting that the grass puffer PQRFa peptide may have multiple roles in the control of reproduction that are dependent on the reproductive stages.
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Affiliation(s)
- Md Shahjahan
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Hiroyuki Doi
- Shimonoseki Marine Science Museum "Kaikyokan", Shimonoseki Academy of Marine Science, Yamaguchi 750-0036, Japan
| | - Hironori Ando
- Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata 952-2135, Japan.
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Lénárd L, Kovács A, Ollmann T, Péczely L, Zagoracz O, Gálosi R, László K. Positive reinforcing effects of RFamide-related peptide-1 in the rat central nucleus of amygdala. Behav Brain Res 2014; 275:101-6. [DOI: 10.1016/j.bbr.2014.08.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/24/2014] [Accepted: 08/26/2014] [Indexed: 12/28/2022]
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Robinson SD, Safavi-Hemami H, Raghuraman S, Imperial JS, Papenfuss AT, Teichert RW, Purcell AW, Olivera BM, Norton RS. Discovery by proteogenomics and characterization of an RF-amide neuropeptide from cone snail venom. J Proteomics 2014; 114:38-47. [PMID: 25464369 DOI: 10.1016/j.jprot.2014.11.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 11/04/2014] [Accepted: 11/08/2014] [Indexed: 12/25/2022]
Abstract
UNLABELLED In this study, a proteogenomic annotation strategy was used to identify a novel bioactive peptide from the venom of the predatory marine snail Conus victoriae. The peptide, conorfamide-Vc1 (CNF-Vc1), defines a new gene family. The encoded mature peptide was unusual for conotoxins in that it was cysteine-free and, despite low overall sequence similarity, contained two short motifs common to known neuropeptides/hormones. One of these was the C-terminal RF-amide motif, commonly observed in neuropeptides from a range of organisms, including humans. The mature venom peptide was synthesized and characterized structurally and functionally. The peptide was bioactive upon injection into mice, and calcium imaging of mouse dorsal root ganglion (DRG) cells revealed that the peptide elicits an increase in intracellular calcium levels in a subset of DRG neurons. Unusually for most Conus venom peptides, it also elicited an increase in intracellular calcium levels in a subset of non-neuronal cells. BIOLOGICAL SIGNIFICANCE Our findings illustrate the utility of proteogenomics for the discovery of novel, functionally relevant genes and their products. CNF-Vc1 should be useful for understanding the physiological role of RF-amide peptides in the molluscan and mammalian nervous systems.
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Affiliation(s)
- Samuel D Robinson
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville 3052, Australia.
| | | | | | - Julita S Imperial
- Department of Biology, University of Utah, Salt Lake City, UT 84112, USA
| | - Anthony T Papenfuss
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Russell W Teichert
- Department of Biology, University of Utah, Salt Lake City, UT 84112, USA
| | - Anthony W Purcell
- Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, VIC 3800, Australia
| | | | - Raymond S Norton
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville 3052, Australia
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