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Khan R, Laumet G, Leinninger GM. Hungry for relief: Potential for neurotensin to address comorbid obesity and pain. Appetite 2024; 200:107540. [PMID: 38852785 DOI: 10.1016/j.appet.2024.107540] [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: 02/01/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/11/2024]
Abstract
Chronic pain and obesity frequently occur together. An ideal therapy would alleviate pain without weight gain, and most optimally, could promote weight loss. The neuropeptide neurotensin (Nts) has been separately implicated in reducing weight and pain but could it be a common actionable target for both pain and obesity? Here we review the current knowledge of Nts signaling via its receptors in modulating body weight and pain processing. Evaluating the mechanism by which Nts impacts ingestive behavior, body weight, and analgesia has potential to identify common physiologic mechanisms underlying weight and pain comorbidities, and whether Nts may be common actionable targets for both.
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Affiliation(s)
- Rabail Khan
- Neuroscience Program, Michigan State University, East Lansing, MI, 48824, USA
| | - Geoffroy Laumet
- Neuroscience Program, Michigan State University, East Lansing, MI, 48824, USA; Department of Physiology, Michigan State University, East Lansing, MI, 48824, USA
| | - Gina M Leinninger
- Neuroscience Program, Michigan State University, East Lansing, MI, 48824, USA; Department of Physiology, Michigan State University, East Lansing, MI, 48824, USA.
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2
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Gereau GB, Torruella-Suárez ML, Sizer SE, Xia M, Zhou D, Wykoff LA, Teklezghi AT, Alvarez-Pamir A, Boyt KM, Kash TL, McElligott ZA. GABA release from central amygdala neurotensin neurons differentially modulates ethanol consumption in male and female mice. Neuropsychopharmacology 2024; 49:1151-1161. [PMID: 38418568 PMCID: PMC11109172 DOI: 10.1038/s41386-024-01830-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 03/01/2024]
Abstract
The central nucleus of the amygdala is known to play key roles in alcohol use and affect. Neurotensin neurons in the central nucleus of the amygdala have been shown to regulate alcohol drinking in male mice. However, little is known about which neurotransmitters released by these cells drive alcohol consumption or whether these cells drive alcohol consumption in female mice. Here we show that knockdown of GABA release from central amygdala neurotensin neurons using a Nts-cre-dependent vGAT-shRNA-based AAV strategy reduces alcohol drinking in male, but not female, mice. This manipulation did not impact avoidance behavior, except in a fasted novelty-suppressed feeding test, in which vGAT shRNA mice demonstrated increased latency to feed on a familiar high-value food reward, an effect driven by male mice. In contrast, vGAT shRNA female mice showed heightened sensitivity to thermal stimulation. These data show a role for GABA release from central amygdala neurotensin neurons in modulating consumption of rewarding substances in different motivational states.
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Affiliation(s)
- Graydon B Gereau
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - María L Torruella-Suárez
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Graduate Program in Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sarah E Sizer
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Mengfan Xia
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Diana Zhou
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Luke A Wykoff
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Adonay T Teklezghi
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ali Alvarez-Pamir
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kristen M Boyt
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Thomas L Kash
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zoé A McElligott
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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3
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Kovanur Sampath K, Treffel L, P.Thomson O, Rodi JD, Fleischmann M, Tumilty S. Changes in biochemical markers following a spinal manipulation - a systematic review update. J Man Manip Ther 2024; 32:28-50. [PMID: 37671460 PMCID: PMC10795611 DOI: 10.1080/10669817.2023.2252187] [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: 06/21/2023] [Accepted: 08/18/2023] [Indexed: 09/07/2023] Open
Abstract
OBJECTIVE The aim of this systematic review was to update the current level of evidence for spinal manipulation in influencing various biochemical markers in healthy and/or symptomatic population. METHODS This is a systematic review update. Various databases were searched (inception till May 2023) and fifteen trials (737 participants) that met the inclusion criteria were included in the review. Two authors independently screened, extracted and assessed the risk of bias in included studies. Outcome measure data were synthesized using standard mean differences and meta-analysis for the primary outcome (biochemical markers). The Grading of Recommendations, Assessment, Development and Evaluation (GRADE) was used for assessing the quality of the body of evidence for each outcome of interest. RESULTS There was low-quality evidence that spinal manipulation influenced various biochemical markers (not pooled). There was low-quality evidence of significant difference that spinal manipulation is better (SMD -0.42, 95% CI - 0.74 to -0.1) than control in eliciting changes in cortisol levels immediately after intervention. Low-quality evidence further indicated (not pooled) that spinal manipulation can influence inflammatory markers such as interleukins levels post-intervention. There was also very low-quality evidence that spinal manipulation does not influence substance-P, neurotensin, oxytocin, orexin-A, testosterone and epinephrine/nor-epinephrine. CONCLUSION Spinal manipulation may influence inflammatory and cortisol post-intervention. However, the wider prediction intervals in most outcome measures point to the need for future research to clarify and establish the clinical relevance of these changes.
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Affiliation(s)
- Kesava Kovanur Sampath
- Centre for Health and Social Practice, Waikato Institute of Technology, Te Pukenga, Hamilton, New Zealand
- School of Public Health, University of Technology, ARCCIM, Sydney, Australia
| | - Loïc Treffel
- School of Public Health, University of Technology, ARCCIM, Sydney, Australia
- Institut Toulousain d’Ostéopathie, IRF’O, Toulouse, France
- INMG-PGNM, Univ Lyon1, Lyon, France
| | - Oliver P.Thomson
- School of Public Health, University of Technology, ARCCIM, Sydney, Australia
- Research Department, University College of Osteopathy, London, UK
| | - Jerry Draper Rodi
- School of Public Health, University of Technology, ARCCIM, Sydney, Australia
- Research Department, University College of Osteopathy, London, UK
- National Council for Osteopathic Research, London, UK
| | - Michael Fleischmann
- School of Public Health, University of Technology, ARCCIM, Sydney, Australia
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia
| | - Steve Tumilty
- Centre for Health, Activity, and Rehabilitation Research (CHARR), School of Physiotherapy, University of Otago, Dunedin, New Zealand
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Gereau GB, Torruella-Suárez ML, Sizer SE, Xia M, Zhou D, Wykoff LA, Teklezghi AT, Alvarez-Pamir A, Boyt KM, Kash TL, McElligott ZA. GABA Release From Central Amygdala Neurotensin Neurons Differentially Modulates Reward and Consummatory Behavior in Male and Female Mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.14.557768. [PMID: 37745547 PMCID: PMC10515895 DOI: 10.1101/2023.09.14.557768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
The central nucleus of the amygdala is known to play key roles in alcohol use and affect. Neurotensin neurons in the central nucleus of the amygdala have been shown to regulate alcohol drinking in male mice. However, little is known about which neurotransmitters released by these cells drive alcohol consumption or whether these cells drive alcohol consumption in female mice. Here we show that knockdown of GABA release from central amygdala neurotensin neurons using a Nts-cre-dependent vGAT-shRNA-based AAV strategy reduces alcohol drinking in male, but not female, mice. This manipulation did not impact avoidance behavior, except in a fasted novelty-suppressed feeding test, in which vGAT shRNA mice demonstrated increased latency to feed on a familiar high-value food reward, an effect driven by male mice. In contrast, vGAT shRNA female mice showed heightened sensitivity to thermal stimulation. These data show a role for GABA release from central amygdala neurotensin neurons in modulating consumption of rewarding substances in different motivational states.
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Affiliation(s)
- Graydon B Gereau
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
- Department of Pharmacology, University of North Carolina at Chapel Hill, USA
| | - María L Torruella-Suárez
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
- Graduate Program in Neuroscience, University of North Carolina at Chapel Hill, USA
| | - Sarah E Sizer
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
| | - Mengfan Xia
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
| | - Diana Zhou
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
| | - Luke A Wykoff
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
| | - Adonay T Teklezghi
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
| | - Ali Alvarez-Pamir
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
| | - Kristen M Boyt
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
| | - Thomas L Kash
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
- Department of Pharmacology, University of North Carolina at Chapel Hill, USA
| | - Zoé A McElligott
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, USA
- Department of Pharmacology, University of North Carolina at Chapel Hill, USA
- Department of Psychiatry, University of North Carolina at Chapel Hill, USA
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5
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Zhang G, Cui M, Ji R, Zou S, Song L, Fan B, Yang L, Wang D, Hu S, Zhang X, Fang T, Yu X, Yang JX, Chaudhury D, Liu H, Hu A, Ding HL, Cao JL, Zhang H. Neural and Molecular Investigation into the Paraventricular Thalamic-Nucleus Accumbens Circuit for Pain Sensation and Non-opioid Analgesia. Pharmacol Res 2023; 191:106776. [PMID: 37084858 DOI: 10.1016/j.phrs.2023.106776] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 04/02/2023] [Accepted: 04/18/2023] [Indexed: 04/23/2023]
Abstract
The paucity of medications with novel mechanisms for pain treatment combined with the severe adverse effects of opioid analgesics has led to an imperative pursuit of non-opioid analgesia and a better understanding of pain mechanisms. Here, we identify the putative glutamatergic inputs from the paraventricular thalamic nucleus to the nucleus accumbens (PVTGlut→NAc) as a novel neural circuit for pain sensation and non-opioid analgesia. Our in vivo fiber photometry and in vitro electrophysiology experiments found that PVTGlut→NAc neuronal activity increased in response to acute thermal/mechanical stimuli and persistent inflammatory pain. Direct optogenetic activation of these neurons in the PVT or their terminals in the NAc induced pain-like behaviors. Conversely, inhibition of PVTGlut→NAc neurons or their NAc terminals exhibited a potent analgesic effect in both naïve and pathological pain mice, which could not be prevented by pretreatment of naloxone, an opioid receptor antagonist. Anterograde trans-synaptic optogenetic experiments consistently demonstrated that the PVTGlut→NAc circuit bi-directionally modulates pain behaviors. Furthermore, circuit-specific molecular profiling and pharmacological studies revealed dopamine receptor 3 as a candidate target for pain modulation and non-opioid analgesic development. Taken together, these findings provide a previously unknown neural circuit for pain sensation and non-opioid analgesia and a valuable molecular target for developing future safer medication.
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Affiliation(s)
- Guangchao Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Mengqiao Cui
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Ran Ji
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Shiya Zou
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Lingzhen Song
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Bingqian Fan
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Li Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Di Wang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Suwan Hu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xiao Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Department of Anesthesiology, The Affiliated Wuxi NO.2 People's Hospital of Nanjing Medical University, Wuxi NO.2 People's Hospital, Wuxi 214000, Jiangsu, China
| | - Tantan Fang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xiaolu Yu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Jun-Xia Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Dipesh Chaudhury
- Division of Science, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
| | - He Liu
- Department of Anesthesiology, Huzhou Central Hospital, Huzhou, Zhejiang 313000, China
| | - Ankang Hu
- The Animal Facility of Xuzhou Medical University, Xuzhou Medical University, Xuzhou 221004, Jiangsu, PR China
| | - Hai-Lei Ding
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
| | - Jun-Li Cao
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Department of Anesthesiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
| | - Hongxing Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
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Previti S, Desgagné M, Tourwé D, Cavelier F, Sarret P, Ballet S. Opening the amino acid toolbox for peptide-based NTS2-selective ligands as promising lead compounds for pain management. J Pept Sci 2022; 29:e3471. [PMID: 36539999 DOI: 10.1002/psc.3471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/17/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Chronic pain is one of the most critical health issues worldwide. Despite considerable efforts to find therapeutic alternatives, opioid drugs remain the gold standard for pain management. The administration of μ-opioid receptor (MOR) agonists is associated with detrimental and limiting adverse effects. Overall, these adverse effects strongly overshadow the effectiveness of opioid therapy. In this context, the development of neurotensin (NT) ligands has shown to be a promising approach for the management of chronic and acute pain. NT exerts its opioid-independent analgesic effects through the binding of two G protein-coupled receptors (GPCRs), NTS1 and NTS2. In the last decades, modified NT analogues have been proven to provide potent analgesia in vivo. However, selective NTS1 and nonselective NTS1/NTS2 ligands cause antinociception associated with hypothermia and hypotension, whereas selective NTS2 ligands induce analgesia without altering the body temperature and blood pressure. In light of this, various structure-activity relationship (SAR) studies provided findings addressing the binding affinity of ligands towards NTS2. Herein, we comprehensively review peptide-based NTS2-selective ligands as a robust alternative for future pain management. Particular emphasis is placed on SAR studies governing the desired selectivity and associated in vivo results.
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Affiliation(s)
- Santo Previti
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Michael Desgagné
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Dirk Tourwé
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
| | - Florine Cavelier
- Institut des Biomolécules Max Mousseron, IBMM, UMR 5247, CNRS, Université de Montpellier, ENSCM, Montpellier, France
| | - Philippe Sarret
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Steven Ballet
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
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Martin L, Ibrahim M, Gomez K, Yu J, Cai S, Chew LA, Bellampalli SS, Moutal A, Largent-Milnes T, Porreca F, Khanna R, Olivera BM, Patwardhan A. Conotoxin contulakin-G engages a neurotensin receptor 2/R-type calcium channel (Cav2.3) pathway to mediate spinal antinociception. Pain 2022; 163:1751-1762. [PMID: 35050960 PMCID: PMC9198109 DOI: 10.1097/j.pain.0000000000002561] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 12/07/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Intrathecal application of contulakin-G (CGX), a conotoxin peptide and a neurotensin analogue, has been demonstrated to be safe and potentially analgesic in humans. However, the mechanism of action for CGX analgesia is unknown. We hypothesized that spinal application of CGX produces antinociception through activation of the presynaptic neurotensin receptor (NTSR)2. In this study, we assessed the mechanisms of CGX antinociception in rodent models of inflammatory and neuropathic pain. Intrathecal administration of CGX, dose dependently, inhibited thermal and mechanical hypersensitivities in rodents of both sexes. Pharmacological and clustered regularly interspaced short palindromic repeats/Cas9 editing of NTSR2 reversed CGX-induced antinociception without affecting morphine analgesia. Electrophysiological and gene editing approaches demonstrated that CGX inhibition was dependent on the R-type voltage-gated calcium channel (Cav2.3) in sensory neurons. Anatomical studies demonstrated coexpression of NTSR2 and Cav2.3 in dorsal root ganglion neurons. Finally, synaptic fractionation and slice electrophysiology recordings confirmed a predominantly presynaptic effect. Together, these data reveal a nonopioid pathway engaged by a human-tested drug to produce antinociception.
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Affiliation(s)
- Laurent Martin
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
- Department of Anesthesiology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Mohab Ibrahim
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
- Neuroscience Graduate Interdisciplinary Program, College of Medicine, University of Arizona, Tucson, AZ 85742, USA
| | - Kimberly Gomez
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Jie Yu
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Song Cai
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Lindsey A. Chew
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Shreya Sai Bellampalli
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Aubin Moutal
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Tally Largent-Milnes
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
- Neuroscience Graduate Interdisciplinary Program, College of Medicine, University of Arizona, Tucson, AZ 85742, USA
| | - Frank Porreca
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Rajesh Khanna
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
- Department of Anesthesiology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
- Neuroscience Graduate Interdisciplinary Program, College of Medicine, University of Arizona, Tucson, AZ 85742, USA
- The Center for Innovation in Brain Sciences, The University of Arizona Health Sciences, Tucson, Arizona 85724, USA
| | | | - Amol Patwardhan
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
- Department of Anesthesiology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
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8
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Abstract
Modulation of nociception allows animals to optimize chances of survival by adapting their behaviour in different contexts. In mammals, this is executed by neurons from the brain and is referred to as the descending control of nociception. Whether insects have such control, or the neural circuits allowing it, has rarely been explored. Based on behavioural, neuroscientific and molecular evidence, we argue that insects probably have descending controls for nociception. Behavioural work shows that insects can modulate nocifensive behaviour. Such modulation is at least in part controlled by the central nervous system since the information mediating such prioritization is processed by the brain. Central nervous system control of nociception is further supported by neuroanatomical and neurobiological evidence showing that the insect brain can facilitate or suppress nocifensive behaviour, and by molecular studies revealing pathways involved in the inhibition of nocifensive behaviour both peripherally and centrally. Insects lack the endogenous opioid peptides and their receptors that contribute to mammalian descending nociception controls, so we discuss likely alternative molecular mechanisms for the insect descending nociception controls. We discuss what the existence of descending control of nociception in insects may reveal about pain perception in insects and finally consider the ethical implications of these novel findings.
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Affiliation(s)
- Matilda Gibbons
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK
| | - Sajedeh Sarlak
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - Lars Chittka
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK
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9
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Zhang MM, Feng YP, Qiu XT, Chen T, Bai Y, Feng JM, Wang JD, Chen Y, Zhang MZ, Duan HK, Zhao M, Teng YH, Cao J, Zang WD, Yang K, Li YQ. Neurotensin Attenuates Nociception by Facilitating Inhibitory Synaptic Transmission in the Mouse Spinal Cord. Front Neural Circuits 2022; 15:775215. [PMID: 35002634 PMCID: PMC8740200 DOI: 10.3389/fncir.2021.775215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/26/2021] [Indexed: 12/02/2022] Open
Abstract
Neurotensin (NT) is an endogenous tridecapeptide in the central nervous system. NT-containing neurons and NT receptors are widely distributed in the spinal dorsal horn (SDH), indicating their possible modulatory roles in nociception processing. However, the exact distribution and function of NT, as well as NT receptors (NTRs) expression in the SDH, have not been well documented. Among the four NTR subtypes, NTR2 is predominantly involved in central analgesia according to previous reports. However, the expression and function of NTR2 in the SDH has not yet been directly elucidated. Specifically, it remains unclear how NT-NTR2 interactions contribute to NT-mediated analgesia. In the present study, by using immunofluorescent histochemical staining and immunohistochemical staining with in situ hybridization histochemical staining, we found that dense NT- immunoreactivity (NT-ir) and moderate NTR2-ir neuronal cell bodies and fibers were localized throughout the superficial laminae (laminae I-II) of the SDH at the light microscopic level. In addition, γ-aminobutyric acid (GABA) and NTR2 mRNA were colocalized in some neuronal cell bodies, predominantly in lamina II. Using confocal and electron microscopy, we also observed that NT-ir terminals made both close contacts and asymmetrical synapses with the local GABA-ir neurons. Second, electrophysiological recordings showed that NT facilitated inhibitory synaptic transmission but not glutamatergic excitatory synaptic transmission. Inactivation of NTR2 abolished the NT actions on both GABAergic and glycinergic synaptic release. Moreover, a behavioral study revealed that intrathecal injection of NT attenuated thermal pain, mechanical pain, and formalin induced acute inflammatory pain primarily by activating NTR2. Taken together, the present results provide direct evidence that NT-containing terminals and fibers, as well as NTR2-expressing neurons are widely distributed in the spinal dorsal horn, GABA-containing neurons express NTR2 mainly in lamina II, GABA coexists with NTR2 mainly in lamina II, and NT may directly increase the activity of local inhibitory neurons through NTR2 and induce analgesic effects.
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Affiliation(s)
- Ming-Ming Zhang
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Yu-Peng Feng
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China.,Department of Anatomy, School of Medicine, Northwest University, Xi'an, China
| | - Xin-Tong Qiu
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Tao Chen
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Yang Bai
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Jia-Ming Feng
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Jun-Da Wang
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Yan Chen
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Ming-Zhe Zhang
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Hao-Kai Duan
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Mingwei Zhao
- Department of Anatomy, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Yi-Hui Teng
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Jing Cao
- Department of Anatomy, Basic Medical College, Zhengzhou University, Zhengzhou, China
| | - Wei-Dong Zang
- Department of Anatomy, Basic Medical College, Zhengzhou University, Zhengzhou, China
| | - Kun Yang
- Department of Anatomy, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Yun-Qing Li
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China.,Department of Anatomy, Basic Medical College, Zhengzhou University, Zhengzhou, China.,Department of Anatomy, College of Basic Medicine, Dali University, Dali, China
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10
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Mishra A, Singh KP. Protective effect of neurotensin receptor-1 agonist PD 149163 against lipopolysaccharide-induced gut toxicity in mice. Drug Chem Toxicol 2021; 45:2399-2410. [PMID: 34334065 DOI: 10.1080/01480545.2021.1954698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The interaction between neuroendocrine and immune components of the gut maintains the organism's physical and psychological health. Its disruption may reflect in disease conditions such as inflammatory bowel disease (IBD) and mental illness. The lipopolysaccharide (LPS) disrupts the endocrine-immune homeostasis resulting in gut toxicity. The Neurotensin receptor-1 (NTR-1) agonist PD 149163 (PD) acts as an atypical antipsychotic drug in psychiatric illness, but its role in modulating gut pathophysiology remains unknown. Therefore, the aim of the present study was to evaluate the protective effect of PD against LPS-induced gut toxicity. Swiss albino female mice (12 weeks) were divided into six groups (n = 6/group): (I) Control, (II) LPS (1 mg/kg, for 5 days), (III) LPS (1 mg/kg, for 5 days)+PD low (100 µg/kg, for 21 days), (IV) LPS (1 mg/kg, for 5 days)+PD high (300 µg/kg, for 21 days), (V) PD low (100 µg/kg, for 21 days), and (VI) PD high (300 µg/kg, for 21 days). Drugs were given intraperitoneal in the morning. PD administration prevented the LPS-induced gut inflammation observed in damage of epithelial barrier, disruption of goblet cells, and condensation of lamina propria (LP). The LPS-induced oxidative stress characterized by decreased superoxide dismutase (SOD) activity and increased lipid hydroperoxide (LOOH) (p < 0.001 for both), and enhanced interleukine-6 (IL-6) & tumor necrosis factor-α (TNF-α) (p < 0.001 for both) as well as immunointensity of NT (p < 0.01) and NTR-1 (p < 0.05) were reversed and normalized to control after PD treatment. Thus, the anti-inflammatory, anti-oxidative, and cell proliferation properties of PD modulate the gut toxicity in LPS-challenged mice.
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Affiliation(s)
- Ankit Mishra
- Neurobiology Lab, Department of Zoology, University of Allahabad, Prayagraj, India
| | - K P Singh
- Neurobiology Lab, Department of Zoology, University of Allahabad, Prayagraj, India
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11
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Chartier M, Desgagné M, Sousbie M, Rumsby C, Chevillard L, Théroux L, Haroune L, Côté J, Longpré JM, Boudreault PL, Marsault É, Sarret P. Pharmacodynamic and pharmacokinetic profiles of a neurotensin receptor type 2 (NTS2) analgesic macrocyclic analog. Biomed Pharmacother 2021; 141:111861. [PMID: 34229249 DOI: 10.1016/j.biopha.2021.111861] [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: 03/22/2021] [Revised: 06/22/2021] [Accepted: 06/28/2021] [Indexed: 12/14/2022] Open
Abstract
The current opioid crisis highlights the urgent need to develop safe and effective pain medications. Thus, neurotensin (NT) compounds represent a promising approach, as the antinociceptive effects of NT are mediated by activation of the two G protein-coupled receptor subtypes (i.e., NTS1 and NTS2) and produce potent opioid-independent analgesia. Here, we describe the synthesis and pharmacodynamic and pharmacokinetic properties of the first constrained NTS2 macrocyclic NT(8-13) analog. The Tyr11 residue of NT(8-13) was replaced with a Trp residue to achieve NTS2 selectivity, and a rationally designed side-chain to side-chain macrocyclization reaction was applied between Lys8 and Trp11 to constrain the peptide in an active binding conformation and limit its recognition by proteolytic enzymes. The resulting macrocyclic peptide, CR-01-64, exhibited high-affinity for NTS2 (Ki 7.0 nM), with a more than 125-fold selectivity over NTS1, as well as an improved plasma stability profile (t1/2 > 24 h) compared with NT (t1/2 ~ 2 min). Following intrathecal administration, CR-01-64 exerted dose-dependent and long-lasting analgesic effects in acute (ED50 = 4.6 µg/kg) and tonic (ED50 = 7.1 µg/kg) pain models as well as strong mechanical anti-allodynic effects in the CFA-induced chronic inflammatory pain model. Of particular importance, this constrained NTS2 analog exerted potent nonopioid antinociceptive effects and potentiated opioid-induced analgesia when combined with morphine. At high doses, CR-01-64 did not cause hypothermia or ileum relaxation, although it did induce mild and short-term hypotension, all of which are physiological effects associated with NTS1 activation. Overall, these results demonstrate the strong therapeutic potential of NTS2-selective analogs for the management of pain.
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Affiliation(s)
- Magali Chartier
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Michael Desgagné
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Marc Sousbie
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Charles Rumsby
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | | | - Léa Théroux
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Lounès Haroune
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Jérôme Côté
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Jean-Michel Longpré
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Pierre-Luc Boudreault
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Éric Marsault
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Philippe Sarret
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada.
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12
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Kuburas A, Mason BN, Hing B, Wattiez AS, Reis AS, Sowers LP, Moldovan Loomis C, Garcia-Martinez LF, Russo AF. PACAP Induces Light Aversion in Mice by an Inheritable Mechanism Independent of CGRP. J Neurosci 2021; 41:4697-4715. [PMID: 33846231 PMCID: PMC8260237 DOI: 10.1523/jneurosci.2200-20.2021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/26/2021] [Accepted: 03/27/2021] [Indexed: 01/18/2023] Open
Abstract
The neuropeptides CGRP (calcitonin gene-related peptide) and PACAP (pituitary adenylate cyclase-activating polypeptide) have emerged as mediators of migraine, yet the potential overlap of their mechanisms remains unknown. Infusion of PACAP, like CGRP, can cause migraine in people, and both peptides share similar vasodilatory and nociceptive functions. In this study, we have used light aversion in mice as a surrogate for migraine-like photophobia to compare CGRP and PACAP and ask whether CGRP or PACAP actions were dependent on each other. Similar to CGRP, PACAP induced light aversion in outbred CD-1 mice. The light aversion was accompanied by increased resting in the dark, but not anxiety in a light-independent open field assay. Unexpectedly, about one-third of the CD-1 mice did not respond to PACAP, which was not seen with CGRP. The responder and nonresponder phenotypes were stable, inheritable, and not sex linked, although there was a trend for greater responses among male mice. RNA-sequencing analysis of trigeminal ganglia yielded hierarchical clustering of responder and nonresponder mice and revealed a number of candidate genes, including greater expression of the Trpc5 and Kcnk12 ion channels and glycoprotein hormones and receptors in a subset of male responder mice. Importantly, an anti-PACAP monoclonal antibody could block PACAP-induced light aversion but not CGRP-induced light aversion. Conversely, an anti-CGRP antibody could not block PACAP-induced light aversion. Thus, we propose that CGRP and PACAP act by independent convergent pathways that cause a migraine-like symptom in mice.SIGNIFICANCE STATEMENT The relationship between the neuropeptides CGRP (calcitonin gene-related peptide) and PACAP (pituitary adenylate cyclase-activating polypeptide) in migraine is relevant given that both peptides can induce migraine in people, yet to date only drugs that target CGRP are available. Using an outbred strain of mice, we were able to show that most, but not all, mice respond to PACAP in a preclinical photophobia assay. Our finding that CGRP and PACAP monoclonal antibodies do not cross-inhibit the other peptide indicates that CGRP and PACAP actions are independent and suggests that PACAP-targeted drugs may be effective in patients who do not respond to CGRP-based therapeutics.
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Affiliation(s)
- Adisa Kuburas
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa 52242
| | - Bianca N Mason
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa 52242
- Molecular and Cellular Biology Program, University of Iowa, Iowa City, Iowa 52242
| | - Benjamin Hing
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa 52242
| | - Anne-Sophie Wattiez
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa 52242
| | - Alyssa S Reis
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa 52242
| | - Levi P Sowers
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa 52242
- Center for the Prevention and Treatment of Visual Loss, Veterans Affairs Health Care System, Iowa City, Iowa 52246
| | | | | | - Andrew F Russo
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa 52242
- Department of Neurology, University of Iowa, Iowa City, Iowa 52242
- Center for the Prevention and Treatment of Visual Loss, Veterans Affairs Health Care System, Iowa City, Iowa 52246
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13
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Das Gupta RR, Scheurer L, Pelczar P, Wildner H, Zeilhofer HU. Neuron-specific spinal cord translatomes reveal a neuropeptide code for mouse dorsal horn excitatory neurons. Sci Rep 2021; 11:5232. [PMID: 33664406 PMCID: PMC7933427 DOI: 10.1038/s41598-021-84667-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 02/16/2021] [Indexed: 01/24/2023] Open
Abstract
The spinal dorsal horn harbors a sophisticated and heterogeneous network of excitatory and inhibitory neurons that process peripheral signals encoding different sensory modalities. Although it has long been recognized that this network is crucial both for the separation and the integration of sensory signals of different modalities, a systematic unbiased approach to the use of specific neuromodulatory systems is still missing. Here, we have used the translating ribosome affinity purification (TRAP) technique to map the translatomes of excitatory glutamatergic (vGluT2+) and inhibitory GABA and/or glycinergic (vGAT+ or Gad67+) neurons of the mouse spinal cord. Our analyses demonstrate that inhibitory and excitatory neurons are not only set apart, as expected, by the expression of genes related to the production, release or re-uptake of their principal neurotransmitters and by genes encoding for transcription factors, but also by a differential engagement of neuromodulator, especially neuropeptide, signaling pathways. Subsequent multiplex in situ hybridization revealed eleven neuropeptide genes that are strongly enriched in excitatory dorsal horn neurons and display largely non-overlapping expression patterns closely adhering to the laminar and presumably also functional organization of the spinal cord grey matter.
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Affiliation(s)
- Rebecca Rani Das Gupta
- Institute of Pharmacology and Toxicology, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.,Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zurich, Vladimir-Prelog-Weg 1-5/10, 8090, Zurich, Switzerland
| | - Louis Scheurer
- Institute of Pharmacology and Toxicology, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Pawel Pelczar
- Center for Transgenic Models, University of Basel, 4001, Basel, Switzerland
| | - Hendrik Wildner
- Institute of Pharmacology and Toxicology, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.
| | - Hanns Ulrich Zeilhofer
- Institute of Pharmacology and Toxicology, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland. .,Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zurich, Vladimir-Prelog-Weg 1-5/10, 8090, Zurich, Switzerland.
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14
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Chartier M, Desgagné M, Sousbie M, Côté J, Longpré JM, Marsault E, Sarret P. Design, Structural Optimization, and Characterization of the First Selective Macrocyclic Neurotensin Receptor Type 2 Non-opioid Analgesic. J Med Chem 2021; 64:2110-2124. [PMID: 33538583 DOI: 10.1021/acs.jmedchem.0c01726] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Neurotensin (NT) receptor type 2 (NTS2) represents an attractive target for the development of new NT-based analgesics. Here, we report the synthesis and functional in vivo characterization of the first constrained NTS2-selective macrocyclic NT analog. While most chemical optimization studies rely on the NT(8-13) fragment, we focused on NT(7-12) as a scaffold to design NTS2-selective macrocyclic peptides. Replacement of Ile12 by Leu, and Pro7/Pro10 by allylglycine residues followed by cyclization via ring-closing metathesis led to macrocycle 4, which exhibits good affinity for NTS2 (50 nM), high selectivity over NTS1 (>100 μM), and improved stability compared to NT(8-13). In vivo profiling in rats reveals that macrocycle 4 produces potent analgesia in three distinct rodent pain models, without causing the undesired effects associated with NTS1 activation. We further provide evidence of its non-opioid antinociceptive activity, therefore highlighting the strong therapeutic potential of NTS2-selective analogs for the management of acute and chronic pain.
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Affiliation(s)
- Magali Chartier
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Michael Desgagné
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Marc Sousbie
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Jérôme Côté
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Jean-Michel Longpré
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Eric Marsault
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Philippe Sarret
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
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15
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Vivancos M, Fanelli R, Besserer-Offroy É, Beaulieu S, Chartier M, Resua-Rojas M, Mona CE, Previti S, Rémond E, Longpré JM, Cavelier F, Sarret P. Metabolically stable neurotensin analogs exert potent and long-acting analgesia without hypothermia. Behav Brain Res 2021; 405:113189. [PMID: 33607165 DOI: 10.1016/j.bbr.2021.113189] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 12/14/2022]
Abstract
The endogenous tridecapeptide neurotensin (NT) has emerged as an important inhibitory modulator of pain transmission, exerting its analgesic action through the activation of the G protein-coupled receptors, NTS1 and NTS2. Whereas both NT receptors mediate the analgesic effects of NT, NTS1 activation also produces hypotension and hypothermia, which may represent obstacles for the development of new pain medications. In the present study, we implemented various chemical strategies to improve the metabolic stability of the biologically active fragment NT(8-13) and assessed their NTS1/NTS2 relative binding affinities. We then determined their ability to reduce the nociceptive behaviors in acute, tonic, and chronic pain models and to modulate blood pressure and body temperature. To this end, we synthesized a series of NT(8-13) analogs carrying a reduced amide bond at Lys8-Lys9 and harboring site-selective modifications with unnatural amino acids, such as silaproline (Sip) and trimethylsilylalanine (TMSAla). Incorporation of Sip and TMSAla respectively in positions 10 and 13 of NT(8-13) combined with the Lys8-Lys9 reduced amine bond (JMV5296) greatly prolonged the plasma half-life time over 20 h. These modifications also led to a 25-fold peptide selectivity toward NTS2. More importantly, central delivery of JMV5296 was able to induce a strong antinociceptive effect in acute (tail-flick), tonic (formalin), and chronic inflammatory (CFA) pain models without inducing hypothermia. Altogether, these results demonstrate that the chemically-modified NT(8-13) analog JMV5296 exhibits a better therapeutic profile and may thus represent a promising avenue to guide the development of new stable NT agonists and improve pain management.
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Affiliation(s)
- Mélanie Vivancos
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada; Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada.
| | - Roberto Fanelli
- Institut des Biomolécules Max Mousseron (IBMM), UMR-CNRS 5247, Université Montpellier, ENSCM, Montpellier, France.
| | - Élie Besserer-Offroy
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada; Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada.
| | - Sabrina Beaulieu
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada; Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada.
| | - Magali Chartier
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada; Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Martin Resua-Rojas
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada; Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada.
| | - Christine E Mona
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California at Los Angeles, Los Angeles, CA, USA.
| | - Santo Previti
- Institut des Biomolécules Max Mousseron (IBMM), UMR-CNRS 5247, Université Montpellier, ENSCM, Montpellier, France.
| | - Emmanuelle Rémond
- Institut des Biomolécules Max Mousseron (IBMM), UMR-CNRS 5247, Université Montpellier, ENSCM, Montpellier, France.
| | - Jean-Michel Longpré
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada; Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada.
| | - Florine Cavelier
- Institut des Biomolécules Max Mousseron (IBMM), UMR-CNRS 5247, Université Montpellier, ENSCM, Montpellier, France.
| | - Philippe Sarret
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada; Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada.
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16
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Neurotensins and their therapeutic potential: research field study. Future Med Chem 2020; 12:1779-1803. [PMID: 33032465 DOI: 10.4155/fmc-2020-0124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The natural tridecapeptide neurotensin has been emerged as a promising therapeutic scaffold for the treatment of neurological diseases and cancer. In this work, we aimed to identify the top 100 most cited original research papers as well as recent key studies related to neurotensins. The Web of Science Core Collection database was searched and the retrieved research articles were analyzed by using the VOSviewer software. The most cited original articles were published between 1973 and 2013. The top-cited article was by Carraway and Leeman reporting the discovery of neurotensin in 1973. The highly cited terms were associated with hypotension and angiotensin-converting-enzyme. The conducted analysis reveals the therapeutic potentials of neurotensin, and further impactful research toward its clinical development is warrantied.
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17
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Apostol CR, Hay M, Polt R. Glycopeptide drugs: A pharmacological dimension between "Small Molecules" and "Biologics". Peptides 2020; 131:170369. [PMID: 32673700 PMCID: PMC7448947 DOI: 10.1016/j.peptides.2020.170369] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/12/2020] [Accepted: 07/06/2020] [Indexed: 12/16/2022]
Abstract
Peptides are an important class of molecules with diverse biological activities. Many endogenous peptides, especially neuropeptides and peptide hormones, play critical roles in development and regulating homeostasis. Furthermore, as drug candidates their high receptor selectivity and potent binding leads to reduced off-target interactions and potential negative side effects. However, the therapeutic potential of peptides is severely hampered by their poor stability in vivo and low permeability across biological membranes. Several strategies have been successfully employed over the decades to address these concerns, and one of the most promising strategies is glycosylation. It has been demonstrated in numerous cases that glycosylation is an effective synthetic approach to improve the pharmacokinetic profiles and membrane permeability of peptides. The effects of glycosylation on peptide stability and peptide-membrane interactions in the context of blood-brain barrier penetration will be explored. Numerous examples of glycosylated analogues of endogenous peptides targeting class A and B G-protein coupled receptors (GPCRs) with an emphasis on O-linked glycopeptides will be reviewed. Notable examples of N-, S-, and C-linked glycopeptides will also be discussed. A small section is devoted to synthetic methods for the preparation of glycopeptides and requisite amino acid glycoside building blocks.
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Affiliation(s)
- Christopher R Apostol
- Dept. of Chemistry & Biochemistry, BIO5, The University of Arizona, Tucson, AZ 85721, USA.
| | - Meredith Hay
- Evelyn F. McKnight Brain Institute, Dept. of Physiology, The University of Arizona, Tucson, AZ 85724, USA
| | - Robin Polt
- Dept. of Chemistry & Biochemistry, BIO5, The University of Arizona, Tucson, AZ 85721, USA
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18
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Tétreault P, Besserer-Offroy É, Brouillette RL, René A, Murza A, Fanelli R, Kirby K, Parent AJ, Dubuc I, Beaudet N, Côté J, Longpré JM, Martinez J, Cavelier F, Sarret P. Pain relief devoid of opioid side effects following central action of a silylated neurotensin analog. Eur J Pharmacol 2020; 882:173174. [DOI: 10.1016/j.ejphar.2020.173174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/28/2020] [Accepted: 05/04/2020] [Indexed: 12/14/2022]
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19
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Previti S, Vivancos M, Rémond E, Beaulieu S, Longpré JM, Ballet S, Sarret P, Cavelier F. Insightful Backbone Modifications Preventing Proteolytic Degradation of Neurotensin Analogs Improve NT S1-Induced Protective Hypothermia. Front Chem 2020; 8:406. [PMID: 32582624 PMCID: PMC7291367 DOI: 10.3389/fchem.2020.00406] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/17/2020] [Indexed: 12/31/2022] Open
Abstract
Therapeutic hypothermia represents a brain-protective strategy for multiple emergency situations, such as stroke or traumatic injury. Neurotensin (NT), which exerts its effects through activation of two G protein-coupled receptors, namely NTS1 and NTS2, induces a strong and long-lasting decrease in core body temperature after its central administration. Growing evidence demonstrates that NTS1 is the receptor subtype mediating the hypothermic action of NT. As such, potent NTS1 agonists designed on the basis of the minimal C-terminal NT(8-13) bioactive fragment have been shown to produce mild hypothermia and exert neuroprotective effects under various clinically relevant conditions. The high susceptibility of NT(8-13) to protease degradation (half-life <2 min) represents, however, a serious limitation for its use in pharmacological therapy. In light of this, we report here a structure-activity relationship study in which pairs of NT(8-13) analogs have been developed, based on the incorporation of a reduced Lys8-Lys9 bond. To further stabilize the peptide bonds, a panel of backbone modifications was also inserted along the peptide sequence, including Sip10, D-Trp11, Dmt11, Tle12, and TMSAla13. Our results revealed that the combination of appropriate chemical modifications leads to compounds exhibiting improved resistance to proteolytic cleavages (>24 h; 16). Among them, the NT(8-13) analogs harboring the reduced amine bond combined with the unnatural amino acids TMSAla13 (4) and Sip10 (6) or the di-substitution Lys11 - TMSAla13 (12), D-Trp11-TMSAla13 (14), and Dmt11-Tle12 (16) produced sustained hypothermic effects (−3°C for at least 1 h). Importantly, we observed that hypothermia was mainly driven by the increased stability of the NT(8-13) derivatives, instead of the high binding-affinity at NTS1. Altogether, these results reveal the importance of the reduced amine bond in optimizing the metabolic properties of the NT(8-13) peptide and support the development of stable NTS1 agonists as first drug candidate in neuroprotective hypothermia.
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Affiliation(s)
- Santo Previti
- Institut des Biomolécules Max Mousseron, IBMM, UMR-5247, CNRS, Université de Montpellier, ENSCM, Montpellier, France.,Departments of Bioengineering Sciences and Chemistry, Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
| | - Mélanie Vivancos
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Emmanuelle Rémond
- Institut des Biomolécules Max Mousseron, IBMM, UMR-5247, CNRS, Université de Montpellier, ENSCM, Montpellier, France
| | - Sabrina Beaulieu
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Jean-Michel Longpré
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Steven Ballet
- Departments of Bioengineering Sciences and Chemistry, Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
| | - Philippe Sarret
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Florine Cavelier
- Institut des Biomolécules Max Mousseron, IBMM, UMR-5247, CNRS, Université de Montpellier, ENSCM, Montpellier, France
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20
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Neurotensin in reward processes. Neuropharmacology 2020; 167:108005. [PMID: 32057800 DOI: 10.1016/j.neuropharm.2020.108005] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 02/06/2020] [Accepted: 02/09/2020] [Indexed: 12/18/2022]
Abstract
Neurotensin (NTS) is a neuropeptide neurotransmitter expressed in the central and peripheral nervous systems. Many studies over the years have revealed a number of roles for this neuropeptide in body temperature regulation, feeding, analgesia, ethanol sensitivity, psychosis, substance use, and pain. This review provides a general survey of the role of neurotensin with a focus on modalities that we believe to be particularly relevant to the study of reward. We focus on NTS signaling in the ventral tegmental area, nucleus accumbens, lateral hypothalamus, bed nucleus of the stria terminalis, and central amygdala. Studies on the role of NTS outside of the ventral tegmental area are still in their relative infancy, yet they reveal a complex role for neurotensinergic signaling in reward-related behaviors that merits further study. This article is part of the special issue on 'Neuropeptides'.
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21
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Eiselt E, Gonzalez S, Martin C, Chartier M, Betti C, Longpré JM, Cavelier F, Tourwé D, Gendron L, Ballet S, Sarret P. Neurotensin Analogues Containing Cyclic Surrogates of Tyrosine at Position 11 Improve NTS2 Selectivity Leading to Analgesia without Hypotension and Hypothermia. ACS Chem Neurosci 2019; 10:4535-4544. [PMID: 31589400 DOI: 10.1021/acschemneuro.9b00390] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Neurotensin (NT) exerts its analgesic effects through activation of the G protein-coupled receptors NTS1 and NTS2. This opioid-independent antinociception represents a potential alternative for pain management. While activation of NTS1 also induces a drop in blood pressure and body temperature, NTS2 appears to be an analgesic target free of these adverse effects. Here, we report modifications of NT at Tyr11 to increase selectivity toward NTS2, complemented by modifications at the N-terminus to impair proteolytic degradation of the biologically active NT(8-13) sequence. Replacement of Tyr11 by either 6-OH-Tic or 7-OH-Tic resulted in a significant loss of binding affinity to NTS1 and subsequent NTS2 selectivity. Incorporation of the unnatural amino acid β3hLys at position 8 increased the half-life to over 24 h in plasma. Simultaneous integration of both β3hLys8 and 6-OH-Tic11 into NT(8-13) produced a potent and NTS2-selective analogue with strong analgesic action after intrathecal delivery in the rat formalin-induced pain model with an ED50 of 1.4 nmol. Additionally, intravenous administration of this NT analogue did not produce persistent hypotension or hypothermia. These results demonstrate that NT analogues harboring unnatural amino acids at positions 8 and 11 can enhance crucial pharmacokinetic and pharmacodynamic features for NT(8-13) analogues, i.e., proteolytic stability, NTS2 selectivity, and improved analgesic/adverse effect ratio.
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Affiliation(s)
- Emilie Eiselt
- Département de pharmacologie et physiologie, Institut de pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5H4, Canada
| | - Simon Gonzalez
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Charlotte Martin
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Magali Chartier
- Département de pharmacologie et physiologie, Institut de pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5H4, Canada
| | - Cecilia Betti
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Jean-Michel Longpré
- Département de pharmacologie et physiologie, Institut de pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5H4, Canada
| | - Florine Cavelier
- Institut des Biomolécules Max Mousseron, IBMM, UMR 5247, CNRS, Université de Montpellier, ENSCM, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
| | - Dirk Tourwé
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Louis Gendron
- Département de pharmacologie et physiologie, Institut de pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5H4, Canada
| | - Steven Ballet
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Philippe Sarret
- Département de pharmacologie et physiologie, Institut de pharmacologie de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5H4, Canada
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22
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23
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Pérez de Vega MJ, Ferrer-Montiel A, González-Muñiz R. Recent progress in non-opioid analgesic peptides. Arch Biochem Biophys 2018; 660:36-52. [DOI: 10.1016/j.abb.2018.10.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/15/2018] [Accepted: 10/16/2018] [Indexed: 02/08/2023]
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24
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Sousbie M, Vivancos M, Brouillette RL, Besserer-Offroy É, Longpré JM, Leduc R, Sarret P, Marsault É. Structural Optimization and Characterization of Potent Analgesic Macrocyclic Analogues of Neurotensin (8–13). J Med Chem 2018; 61:7103-7115. [DOI: 10.1021/acs.jmedchem.8b00175] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Marc Sousbie
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Mélanie Vivancos
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Rebecca L. Brouillette
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Élie Besserer-Offroy
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Jean-Michel Longpré
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Richard Leduc
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Philippe Sarret
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
| | - Éric Marsault
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada
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25
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Pennington MW, Czerwinski A, Norton RS. Peptide therapeutics from venom: Current status and potential. Bioorg Med Chem 2017; 26:2738-2758. [PMID: 28988749 DOI: 10.1016/j.bmc.2017.09.029] [Citation(s) in RCA: 181] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 09/14/2017] [Accepted: 09/19/2017] [Indexed: 12/19/2022]
Abstract
Peptides are recognized as being highly selective, potent and relatively safe as potential therapeutics. Peptides isolated from the venom of different animals satisfy most of these criteria with the possible exception of safety, but when isolated as single compounds and used at appropriate concentrations, venom-derived peptides can become useful drugs. Although the number of venom-derived peptides that have successfully progressed to the clinic is currently limited, the prospects for venom-derived peptides look very optimistic. As proteomic and transcriptomic approaches continue to identify new sequences, the potential of venom-derived peptides to find applications as therapeutics, cosmetics and insecticides grows accordingly.
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Affiliation(s)
| | - Andrzej Czerwinski
- Peptides International, Inc., 11621 Electron Drive, Louisville, KY 40299, USA
| | - Raymond S Norton
- Monash Institute of Pharmaceutical Sciences, 381 Royal Parade, Monash University, Parkville, 3052, Australia
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26
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Kitching MO, Dixon OE, Baumann M, Baxendale IR. Flow-Assisted Synthesis: A Key Fragment of SR 142948A. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700904] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Olivia E. Dixon
- Department of Chemistry; University of Durham; South Road DH1 3LE Durham UK
| | - Marcus Baumann
- Department of Chemistry; University of Durham; South Road DH1 3LE Durham UK
| | - Ian R. Baxendale
- Department of Chemistry; University of Durham; South Road DH1 3LE Durham UK
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27
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Kovanur-Sampath K, Mani R, Cotter J, Gisselman AS, Tumilty S. Changes in biochemical markers following spinal manipulation-a systematic review and meta-analysis. Musculoskelet Sci Pract 2017; 29:120-131. [PMID: 28399479 DOI: 10.1016/j.msksp.2017.04.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 03/21/2017] [Accepted: 04/04/2017] [Indexed: 12/30/2022]
Abstract
The aim of this meta-analysis was to determine the effectiveness of spinal manipulation in influencing various biochemical markers in healthy and or symptomatic population. Electronic databases (n = 10) were searched (from inception till September 2016) and eight trials (325 participants) that met the inclusion criteria were included in the meta-analysis. Two authors independently extracted and assessed the risk of bias in included studies. Standardised mean differences for outcome measures were used to calculate effect sizes. The Grading of Recommendations, Assessment, Development and Evaluation (GRADE) tool was used for assessing the quality of the body of evidence for each outcome of interest. There was moderate quality evidence that spinal manipulation influenced biochemical markers. There was moderate quality evidence of significant difference that spinal manipulation is better (SMD -0.46, 95% CI - 0.93 to 0) than control in eliciting changes in cortisol levels immediately after intervention. There was also a low quality evidence that spinal manipulation is better than control at post-intervention in increasing substance-P (SMD -0.48,95%CI-0.87 to -0.1), neurotensin (SMD -1.8,95%CI-2.56 to -1.04) and oxytocin levels (SMD -2.61,95%CI-3.5to-1.72). However, low quality evidence indicated that spinal manipulation did not influence epinephrine (SMD 0.1,95%CI- 0.56to0.75) or nor-epinephrine levels (SMD -0.06,95%CI-0.71to0.6). The current review found that spinal manipulation can increase substance-p, neurotensin, oxytocin and interleukin levels and may influence cortisol levels post-intervention. However, future trials targeting symptomatic populations are required to understand the clinical importance of such changes.
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Affiliation(s)
- Kesava Kovanur-Sampath
- Centre for Health, Activity, and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand.
| | - Ramakrishnan Mani
- Centre for Health, Activity, and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - Jim Cotter
- School of Physical Education, Sport and Exercise Sciences, University of Otago, Dunedin, New Zealand
| | - Angela Spontelli Gisselman
- Centre for Health, Activity, and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - Steve Tumilty
- Centre for Health, Activity, and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
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28
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Sadeghi M, McArthur JR, Finol-Urdaneta RK, Adams DJ. Analgesic conopeptides targeting G protein-coupled receptors reduce excitability of sensory neurons. Neuropharmacology 2017; 127:116-123. [PMID: 28533165 DOI: 10.1016/j.neuropharm.2017.05.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/16/2017] [Accepted: 05/18/2017] [Indexed: 01/28/2023]
Abstract
Conotoxins (conopeptides) are a diverse group of peptides isolated from the venom of marine cone snails. Conus peptides modulate pain by interacting with voltage-gated ion channels and G protein-coupled receptors (GPCRs). Opiate drugs targeting GPCRs have long been used, nonetheless, many undesirable side effects associated with opiates have been observed including addiction. Consequently, alternative avenues to pain management are a largely unmet need. It has been shown that various voltage-gated calcium channels (VGCCs) respond to GPCR modulation. Thus, regulation of VGCCs by GPCRs has become a valuable alternative in the management of pain. In this review, we focus on analgesic conotoxins that exert their effects via GPCR-mediated inhibition of ion channels involved in nociception and pain transmission. Specifically, α-conotoxin Vc1.1 activation of GABAB receptors and inhibition of voltage-gated calcium channels as a novel mechanism for reducing the excitability of dorsal root ganglion neurons is described. Vc1.1 and other α-conotoxins have been shown to be analgesic in different animal models of chronic pain. This review will outline the functional effects of conopeptide modulation of GPCRs and how their signalling is translated to downstream components of the pain pathways. Where available we present the proposed signalling mechanisms that couples metabotropic receptor activation to their downstream effectors to produce analgesia. This article is part of the Special Issue entitled 'Venom-derived Peptides as Pharmacological Tools.'
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Affiliation(s)
- Mahsa Sadeghi
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Jeffrey R McArthur
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Rocio K Finol-Urdaneta
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - David J Adams
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia.
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29
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Simeth NA, Bause M, Dobmeier M, Kling RC, Lachmann D, Hübner H, Einsiedel J, Gmeiner P, König B. NTS2-selective neurotensin mimetics with tetrahydrofuran amino acids. Bioorg Med Chem 2017; 25:350-359. [DOI: 10.1016/j.bmc.2016.10.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 10/20/2016] [Accepted: 10/31/2016] [Indexed: 01/10/2023]
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30
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Zhang G, Wang K, Li XD, Zhang DL, Xu F. Discovery of novel antagonists of human neurotensin receptor 1 on the basis of ligand and protein structure. Biomed Pharmacother 2016; 84:147-157. [DOI: 10.1016/j.biopha.2016.09.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 09/08/2016] [Accepted: 09/08/2016] [Indexed: 12/25/2022] Open
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31
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32
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Devader C, Moreno S, Roulot M, Deval E, Dix T, Morales CR, Mazella J. Increased Brain Neurotensin and NTSR2 Lead to Weak Nociception in NTSR3/Sortilin Knockout Mice. Front Neurosci 2016; 10:542. [PMID: 27932946 PMCID: PMC5121284 DOI: 10.3389/fnins.2016.00542] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 11/08/2016] [Indexed: 11/17/2022] Open
Abstract
The neuropeptide neurotensin (NT) elicits numerous pharmacological effects through three different receptors (NTSR1, NTSR2, and NTSR3 also called sortilin). Pharmacological approaches and generation of NTSR1 and NTSR2-deficient mice allowed to determine the NT-induced antipsychotic like behavior, the inhibitory of weak fear memory and the nociceptive signaling in a rat formalin tonic pain model to NTSR1. Conversely, the effects of NT on thermal and tonic nociceptions were mediated by NTSR2. However, the role of NTSR3/sortilin on the neurotensinergic system was not investigated. Here, by using C57Bl/6J mouse model in which the gene coding for NTSR3/sortilin has been inactivated, we observed a modification of the expression of both NTSR2 and NT itself. Quantitative PCR and protein expression using Western blot analyses and AlphaLisa™ technology resulted in the observation that brain NTSR2 as well as brain and blood NT were 2-fold increased in KO mice leading to a resistance of these mice to thermal and chemical pain. These data confirm that NTSR3/sortilin interacts with other NT receptors (i.e., NTSR2) and that its deletion modifies also the affinity of this receptor to NT.
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Affiliation(s)
- Christelle Devader
- CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, UMR 7275, Université de Nice Sophia Antipolis Valbonne, France
| | - Sébastien Moreno
- CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, UMR 7275, Université de Nice Sophia Antipolis Valbonne, France
| | - Morgane Roulot
- CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, UMR 7275, Université de Nice Sophia Antipolis Valbonne, France
| | - Emmanuel Deval
- CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, UMR 7275, Université de Nice Sophia Antipolis Valbonne, France
| | - Thomas Dix
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, Medical University of South CarolinaCharleston, SC, USA; JT Pharmaceuticals, Inc.Mount Pleasant, SC, USA
| | - Carlos R Morales
- Department of Anatomy and Cell Biology, McGill University Montreal, QC, Canada
| | - Jean Mazella
- CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, UMR 7275, Université de Nice Sophia Antipolis Valbonne, France
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Thomas JB, Vivancos M, Giddings AM, Wiethe RW, Warner KR, Murza A, Besserer-Offroy É, Longpré JM, Runyon SP, Decker AM, Gilmour BP, Sarret P. Identification of 2-({[1-(4-Fluorophenyl)-5-(2-methoxyphenyl)-1H-pyrazol-3-yl]carbonyl}amino)tricyclo[3.3.1.13,7]decane-2-carboxylic Acid (NTRC-844) as a Selective Antagonist for the Rat Neurotensin Receptor Type 2. ACS Chem Neurosci 2016; 7:1225-31. [PMID: 27359371 DOI: 10.1021/acschemneuro.6b00097] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Neurotensin receptor type 2 (NTS2) compounds display analgesic activity in animal pain models. We have identified the first high-affinity NTS2-selective antagonist (8) that is active in vivo. This study also revealed that the NTS2 FLIPR assay designation for a compound, agonist, partial agonist, and so forth, did not correlate with its in vivo activity as observed in the thermal tail-flick acute model of pain. This suggests that calcium mobilization is not the signaling pathway involved in NTS2-mediated analgesia as assessed by the thermal tail-flick model. Finally, we found a significant bias between rat and human for compound 9 in the NTS2 binding assay.
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Affiliation(s)
- James B. Thomas
- Center
for Drug Discovery, RTI International, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
| | - Mélanie Vivancos
- Department
of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Ave. North, Sherbrooke, QC J1H 5N4, Canada
| | - Angela M. Giddings
- Center
for Drug Discovery, RTI International, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
| | - Robert W. Wiethe
- Center
for Drug Discovery, RTI International, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
| | - Keith R. Warner
- Center
for Drug Discovery, RTI International, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
| | - Alexandre Murza
- Department
of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Ave. North, Sherbrooke, QC J1H 5N4, Canada
| | - Élie Besserer-Offroy
- Department
of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Ave. North, Sherbrooke, QC J1H 5N4, Canada
| | - Jean-Michel Longpré
- Department
of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Ave. North, Sherbrooke, QC J1H 5N4, Canada
| | - Scott P. Runyon
- Center
for Drug Discovery, RTI International, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
| | - Ann M. Decker
- Center
for Drug Discovery, RTI International, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
| | - Brian P. Gilmour
- Center
for Drug Discovery, RTI International, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
| | - Philippe Sarret
- Department
of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Ave. North, Sherbrooke, QC J1H 5N4, Canada
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Yin K, Deuis JR, Lewis RJ, Vetter I. Transcriptomic and behavioural characterisation of a mouse model of burn pain identify the cholecystokinin 2 receptor as an analgesic target. Mol Pain 2016; 12:12/0/1744806916665366. [PMID: 27573516 PMCID: PMC5007901 DOI: 10.1177/1744806916665366] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 07/22/2016] [Indexed: 12/23/2022] Open
Abstract
Burn injury is a cause of significant mortality and morbidity worldwide and is frequently associated with severe and long-lasting pain that remains difficult to manage throughout recovery. We characterised a mouse model of burn-induced pain using pharmacological and transcriptomic approaches. Mechanical allodynia elicited by burn injury was partially reversed by meloxicam (5 mg/kg), gabapentin (100 mg/kg) and oxycodone (3 and 10 mg/kg), while thermal allodynia and gait abnormalities were only significantly improved by amitriptyline (3 mg/kg) and oxycodone (10 mg/kg). The need for relatively high opioid doses to elicit analgesia suggested a degree of opioid resistance, similar to that shown clinically in burn patients. We thus assessed the gene expression changes in dorsal root ganglion neurons and pathophysiological mechanisms underpinning burn injury-induced pain using a transcriptomic approach. Burn injury was associated with significantly increased expression of genes associated with axon guidance, neuropeptide signalling, behavioural defence response and extracellular signalling, confirming a mixed neuropathic and inflammatory aetiology. Notably, among the pain-related genes that were upregulated post-injury was the cholecystokinin 2 receptor (Cckbr), a G protein-coupled receptor known as a pain target involved in reducing opioid effectiveness. Indeed, the clinically used cholecystokinin receptor antagonist proglumide (30 mg/kg) was effective at reversing mechanical allodynia, with additional analgesia evident in combination with low-dose oxycodone (1 mg/kg), including significant reversal of thermal allodynia. These findings highlight the complex pathophysiological mechanisms underpinning burn injury-induced pain and suggest that cholecystokinin-2 receptor antagonists may be useful clinically as adjuvants to decrease opioid requirements and improve analgesic management.
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Affiliation(s)
- Kathleen Yin
- Centre for Pain Research, Institute for Molecular Bioscience, University of Queensland, Queensland, Australia
| | - Jennifer R Deuis
- Centre for Pain Research, Institute for Molecular Bioscience, University of Queensland, Queensland, Australia
| | - Richard J Lewis
- Centre for Pain Research, Institute for Molecular Bioscience, University of Queensland, Queensland, Australia
| | - Irina Vetter
- Centre for Pain Research, Institute for Molecular Bioscience, University of Queensland, Queensland, Australia Pharmacy Australia Centre of Excellence, University of Queensland, Queensland, Australia
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Rémond E, Martin C, Martinez J, Cavelier F. Silicon-Containing Amino Acids: Synthetic Aspects, Conformational Studies, and Applications to Bioactive Peptides. Chem Rev 2016; 116:11654-11684. [DOI: 10.1021/acs.chemrev.6b00122] [Citation(s) in RCA: 173] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Emmanuelle Rémond
- Institut
des Biomolécules
Max Mousseron, Unité Mixte de Recherche 5247 de Centre National
de la Recherche Scientifique, École Nationale Supérieure de Chimie de Montpellier, Université Montpellier, Place Eugène
Bataillon, 34095 Montpellier Cedex 5, France
| | - Charlotte Martin
- Institut
des Biomolécules
Max Mousseron, Unité Mixte de Recherche 5247 de Centre National
de la Recherche Scientifique, École Nationale Supérieure de Chimie de Montpellier, Université Montpellier, Place Eugène
Bataillon, 34095 Montpellier Cedex 5, France
| | - Jean Martinez
- Institut
des Biomolécules
Max Mousseron, Unité Mixte de Recherche 5247 de Centre National
de la Recherche Scientifique, École Nationale Supérieure de Chimie de Montpellier, Université Montpellier, Place Eugène
Bataillon, 34095 Montpellier Cedex 5, France
| | - Florine Cavelier
- Institut
des Biomolécules
Max Mousseron, Unité Mixte de Recherche 5247 de Centre National
de la Recherche Scientifique, École Nationale Supérieure de Chimie de Montpellier, Université Montpellier, Place Eugène
Bataillon, 34095 Montpellier Cedex 5, France
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36
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Gevaert B, Wynendaele E, Stalmans S, Bracke N, D'Hondt M, Smolders I, van Eeckhaut A, De Spiegeleer B. Blood-brain barrier transport kinetics of the neuromedin peptides NMU, NMN, NMB and NT. Neuropharmacology 2016; 107:460-470. [PMID: 27040796 DOI: 10.1016/j.neuropharm.2016.03.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 03/27/2016] [Accepted: 03/29/2016] [Indexed: 12/12/2022]
Abstract
The neuromedin peptides are peripherally and centrally produced, but until now, it is generally believed that they only function as locally acting compounds without any quantitative knowledge about their blood-brain barrier (BBB) passage. Here, we characterize the transport kinetics of four neuromedins (NMU, NMN, NMB and NT) across the BBB, as well as their metabolization profile, and evaluate if they can act as endocrine hormones. Using the in vivo mouse model, multiple time regression (MTR), capillary depletion (CD) and brain efflux studies were performed. Data was fitted using linear (NMU, NT and NMB) or biphasic modeling (NMU and NMN). Three of the four investigated peptides, i.e. NMU, NT and NMN, showed a significant influx into the brain with unidirectional influx rate constants of 1.31 and 0.75 μL/(g × min) for NMU and NT respectively and initial influx constants (K1) of 72.14 and 7.55 μL/(g × min) and net influx constants (K) of 1.28 and 1.36 × 10(-16) μL/(g×min) for NMU and NMN respectively. The influx of NMB was negligible. Only NMN and NT showed a significant efflux out of the brain with an efflux constant (kout) of 0.042 min(-1) and 0.053 min(-1) respectively. Our results indicate that locally produced neuromedin peptides and/or fragments can be transported through the whole body, including passing the BBB, and taken up by different organs/tissues, supporting the idea that the neuromedins could have a much bigger role in the regulation of biological processes than currently assumed.
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Affiliation(s)
- Bert Gevaert
- Drug Quality and Registration (DruQuaR) Group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Evelien Wynendaele
- Drug Quality and Registration (DruQuaR) Group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Sofie Stalmans
- Drug Quality and Registration (DruQuaR) Group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Nathalie Bracke
- Drug Quality and Registration (DruQuaR) Group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Matthias D'Hondt
- Drug Quality and Registration (DruQuaR) Group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Ilse Smolders
- Department of Pharmaceutical Chemistry, Drug Analysis and Drug Information, Center for Neurosciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Ann van Eeckhaut
- Department of Pharmaceutical Chemistry, Drug Analysis and Drug Information, Center for Neurosciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Bart De Spiegeleer
- Drug Quality and Registration (DruQuaR) Group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium.
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37
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In Search of Concomitant Alterations of Dopaminergic and Neurotensinergic Systems in Stress Conditions. Neurochem Res 2016; 41:423-30. [DOI: 10.1007/s11064-016-1849-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 01/21/2016] [Accepted: 01/25/2016] [Indexed: 01/03/2023]
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38
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Fanelli R, Besserer-Offroy É, René A, Côté J, Tétreault P, Collerette-Tremblay J, Longpré JM, Leduc R, Martinez J, Sarret P, Cavelier F. Synthesis and Characterization in Vitro and in Vivo of (l)-(Trimethylsilyl)alanine Containing Neurotensin Analogues. J Med Chem 2015; 58:7785-95. [DOI: 10.1021/acs.jmedchem.5b00841] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Roberto Fanelli
- Institut des Biomolécules
Max Mousseron, IBMM, UMR-5247, CNRS, Université Montpellier,
ENSCM, Place Eugène Bataillon, 34095 Montpellier Cedex
5, France
| | - Élie Besserer-Offroy
- Department
of Pharmacology and Physiology, Institut de Pharmacologie de Sherbrooke,
Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Adeline René
- Institut des Biomolécules
Max Mousseron, IBMM, UMR-5247, CNRS, Université Montpellier,
ENSCM, Place Eugène Bataillon, 34095 Montpellier Cedex
5, France
| | - Jérôme Côté
- Department
of Pharmacology and Physiology, Institut de Pharmacologie de Sherbrooke,
Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Pascal Tétreault
- Department
of Pharmacology and Physiology, Institut de Pharmacologie de Sherbrooke,
Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Jasmin Collerette-Tremblay
- Department
of Pharmacology and Physiology, Institut de Pharmacologie de Sherbrooke,
Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Jean-Michel Longpré
- Department
of Pharmacology and Physiology, Institut de Pharmacologie de Sherbrooke,
Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Richard Leduc
- Department
of Pharmacology and Physiology, Institut de Pharmacologie de Sherbrooke,
Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Jean Martinez
- Institut des Biomolécules
Max Mousseron, IBMM, UMR-5247, CNRS, Université Montpellier,
ENSCM, Place Eugène Bataillon, 34095 Montpellier Cedex
5, France
| | - Philippe Sarret
- Department
of Pharmacology and Physiology, Institut de Pharmacologie de Sherbrooke,
Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Florine Cavelier
- Institut des Biomolécules
Max Mousseron, IBMM, UMR-5247, CNRS, Université Montpellier,
ENSCM, Place Eugène Bataillon, 34095 Montpellier Cedex
5, France
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Thomas JB, Giddings AM, Olepu S, Wiethe RW, Warner KR, Sarret P, Longpre JM, Runyon SP, Gilmour BP. The amide linker in nonpeptide neurotensin receptor ligands plays a key role in calcium signaling at the neurotensin receptor type 2. Bioorg Med Chem Lett 2015; 25:2060-4. [PMID: 25881832 DOI: 10.1016/j.bmcl.2015.03.083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/27/2015] [Accepted: 03/30/2015] [Indexed: 12/30/2022]
Abstract
Compounds acting via the GPCR neurotensin receptor type 2 (NTS2) display analgesia in relevant preclinical models. The amide bond in nonpeptide NTS1 antagonists plays a central role in receptor recognition and molecular conformation. Using NTS2 FLIPR and binding assays, we found that it is also a key molecular structure for binding and calcium mobilization at NTS2. We found that reversed amides display a shift from agonist to antagonist activity and provided examples of the first competitive nonpeptide antagonists observed in the NTS2 FLIPR assay. These compounds will be valuable tools for determining the role of calcium signaling in vitro to NTS2 mediated analgesia.
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Affiliation(s)
- James B Thomas
- Center for Drug Discovery, RTI International, PO Box 12194, Research Triangle Park, NC 27709, United States.
| | - Angela M Giddings
- Center for Drug Discovery, RTI International, PO Box 12194, Research Triangle Park, NC 27709, United States
| | - Srinivas Olepu
- Center for Drug Discovery, RTI International, PO Box 12194, Research Triangle Park, NC 27709, United States
| | - Robert W Wiethe
- Center for Drug Discovery, RTI International, PO Box 12194, Research Triangle Park, NC 27709, United States
| | - Keith R Warner
- Center for Drug Discovery, RTI International, PO Box 12194, Research Triangle Park, NC 27709, United States
| | - Philippe Sarret
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Ave. North, Sherbrooke, QC J1H 5N4, Canada
| | - Jean-Michel Longpre
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Ave. North, Sherbrooke, QC J1H 5N4, Canada
| | - Scott P Runyon
- Center for Drug Discovery, RTI International, PO Box 12194, Research Triangle Park, NC 27709, United States
| | - Brian P Gilmour
- Center for Drug Discovery, RTI International, PO Box 12194, Research Triangle Park, NC 27709, United States
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40
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Lee HK, Zhang L, Smith MD, Walewska A, Vellore NA, Baron R, McIntosh JM, White HS, Olivera BM, Bulaj G. A marine analgesic peptide, Contulakin-G, and neurotensin are distinct agonists for neurotensin receptors: uncovering structural determinants of desensitization properties. Front Pharmacol 2015; 6:11. [PMID: 25713532 PMCID: PMC4322620 DOI: 10.3389/fphar.2015.00011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/12/2015] [Indexed: 11/13/2022] Open
Abstract
Neurotensin receptors have been studied as molecular targets for the treatment of pain, schizophrenia, addiction, or cancer. Neurotensin (NT) and Contulakin-G, a glycopeptide isolated from a predatory cone snail Conus geographus, share a sequence similarity at the C-terminus, which is critical for activation of neurotensin receptors. Both peptides are potent analgesics, although affinity and agonist potency of Contulakin-G toward neurotensin receptors are significantly lower, as compared to those for NT. In this work, we show that the weaker agonist properties of Contulakin-G result in inducing significantly less desensitization of neurotensin receptors and preserving their cell-surface density. Structure-activity relationship (SAR) studies suggested that both glycosylation and charged amino acid residues in Contulakin-G or NT played important roles in desensitizing neurotensin receptors. Computational modeling studies of human neurotensin receptor NTS1 and Contulakin-G confirmed the role of glycosylation in weakening interactions with the receptors. Based on available SAR data, we designed, synthesized, and characterized an analog of Contulakin-G in which the glycosylated amino acid residue, Gal-GalNAc-Thr10, was replaced by memantine-Glu10 residue. This analog exhibited comparable agonist potency and weaker desensitization properties as compared to that of Contulakin-G, while producing analgesia in the animal model of acute pain following systemic administration. We discuss our study in the context of feasibility and safety of developing NT therapeutic agents with improved penetration across the blood-brain barrier. Our work supports engineering peptide-based agonists with diverse abilities to desensitize G-protein coupled receptors and further emphasizes opportunities for conotoxins as novel pharmacological tools and drug candidates.
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Affiliation(s)
- Hee-Kyoung Lee
- Department of Medicinal Chemistry, College of Pharmacy, Skaggs Research Institute, University of Utah Salt Lake City, UT, USA
| | - Liuyin Zhang
- Department of Medicinal Chemistry, College of Pharmacy, Skaggs Research Institute, University of Utah Salt Lake City, UT, USA
| | - Misty D Smith
- Department of Pharmacology and Toxicology, University of Utah Salt Lake City, UT, USA
| | - Aleksandra Walewska
- Department of Medicinal Chemistry, College of Pharmacy, Skaggs Research Institute, University of Utah Salt Lake City, UT, USA ; Faculty of Chemistry, University of Gdansk Gdansk, Poland
| | - Nadeem A Vellore
- Department of Medicinal Chemistry, College of Pharmacy, Skaggs Research Institute, University of Utah Salt Lake City, UT, USA
| | - Riccardo Baron
- Department of Medicinal Chemistry, College of Pharmacy, Skaggs Research Institute, University of Utah Salt Lake City, UT, USA
| | - J Michael McIntosh
- Department of Biology, University of Utah Salt Lake City, UT, USA ; Department of Psychiatry, University of Utah Salt Lake City, UT, USA
| | - H Steve White
- Department of Pharmacology and Toxicology, University of Utah Salt Lake City, UT, USA
| | | | - Grzegorz Bulaj
- Department of Medicinal Chemistry, College of Pharmacy, Skaggs Research Institute, University of Utah Salt Lake City, UT, USA
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41
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Chemical stimulation of the lateral hypothalamus by carbachol attenuated the formalin-induced pain behaviors in rats. Pharmacol Biochem Behav 2015; 129:105-10. [DOI: 10.1016/j.pbb.2014.12.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 12/18/2014] [Accepted: 12/27/2014] [Indexed: 11/18/2022]
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42
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Usoskin D, Furlan A, Islam S, Abdo H, Lönnerberg P, Lou D, Hjerling-Leffler J, Haeggström J, Kharchenko O, Kharchenko PV, Linnarsson S, Ernfors P. Unbiased classification of sensory neuron types by large-scale single-cell RNA sequencing. Nat Neurosci 2014; 18:145-53. [PMID: 25420068 DOI: 10.1038/nn.3881] [Citation(s) in RCA: 1365] [Impact Index Per Article: 136.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 10/22/2014] [Indexed: 12/17/2022]
Abstract
The primary sensory system requires the integrated function of multiple cell types, although its full complexity remains unclear. We used comprehensive transcriptome analysis of 622 single mouse neurons to classify them in an unbiased manner, independent of any a priori knowledge of sensory subtypes. Our results reveal eleven types: three distinct low-threshold mechanoreceptive neurons, two proprioceptive, and six principal types of thermosensitive, itch sensitive, type C low-threshold mechanosensitive and nociceptive neurons with markedly different molecular and operational properties. Confirming previously anticipated major neuronal types, our results also classify and provide markers for new, functionally distinct subtypes. For example, our results suggest that itching during inflammatory skin diseases such as atopic dermatitis is linked to a distinct itch-generating type. We demonstrate single-cell RNA-seq as an effective strategy for dissecting sensory responsive cells into distinct neuronal types. The resulting catalog illustrates the diversity of sensory types and the cellular complexity underlying somatic sensation.
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Affiliation(s)
- Dmitry Usoskin
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Alessandro Furlan
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Saiful Islam
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Hind Abdo
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Peter Lönnerberg
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Daohua Lou
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Jens Hjerling-Leffler
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Jesper Haeggström
- Division of Physiological Chemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Olga Kharchenko
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Peter V Kharchenko
- 1] Center for Biomedical Informatics, Harvard Medical School, Boston, Massachusetts, USA. [2] Division of Hematology/Oncology, Children's Hospital, Boston, Massachusetts, USA
| | - Sten Linnarsson
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Patrik Ernfors
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
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43
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Identification of N-{[6-chloro-4-(2,6-dimethoxyphenyl)quinazolin-2-yl]carbonyl}-l-leucine (NTRC-808), a novel nonpeptide chemotype selective for the neurotensin receptor type 2. Bioorg Med Chem Lett 2014; 25:292-6. [PMID: 25499438 DOI: 10.1016/j.bmcl.2014.11.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 11/13/2014] [Accepted: 11/17/2014] [Indexed: 12/17/2022]
Abstract
Compounds acting via the GPCR neurotensin receptor type 2 (NTS2) display analgesic effects in relevant animal models. Using a pharmacophore model based on known NT receptor nonpeptide compounds, we screened commercial databases to identify compounds that might possess activity at NTS2 receptor sites. Modification of our screening hit to include structural features known to be recognized by NTS1 and NTS2, led to the identification of the novel NTS2 selective nonpeptide, N-{[6-chloro-4-(2,6-dimethoxyphenyl)quinazolin-2-yl]carbonyl}-l-leucine (9). This compound is a potent partial agonist in the FLIPR assay with a profile of activity similar to that of the reference NTS2 analgesic nonpeptide levocabastine (5).
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44
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Adamson RJ, Watts A. Kinetics of the early events of GPCR signalling. FEBS Lett 2014; 588:4701-7. [PMID: 25447525 PMCID: PMC4266533 DOI: 10.1016/j.febslet.2014.10.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 10/10/2014] [Accepted: 10/27/2014] [Indexed: 11/28/2022]
Abstract
Little is known of the kinetics of interactions between GPCRs and their signalling partners. NTS1 binds Gαi1 and Gαs with affinities of 15 ± 6 nM and 31 ± 18 nM (SE), respectively. This SPR assay may be applicable to multiple partners in the signalling cascade. We provide the first direct evidence for GPCR-G protein coupling in nanodiscs.
Neurotensin receptor type 1 (NTS1) is a G protein-coupled receptor (GPCR) that affects cellular responses by initiating a cascade of interactions through G proteins. The kinetic details for these interactions are not well-known. Here, NTS1-nanodisc-Gαs and Gαi1 interactions were studied. The binding affinities of Gαi1 and Gαs to NTS1 were directly measured by surface plasmon resonance (SPR) and determined to be 15 ± 6 nM and 31 ± 18 nM, respectively. This SPR configuration permits the kinetics of early events in signalling pathways to be explored and can be used to initiate descriptions of the GPCR interactome.
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Affiliation(s)
- Roslin J Adamson
- Biomembrane Structure Unit, Biochemistry Department, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Anthony Watts
- Biomembrane Structure Unit, Biochemistry Department, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
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45
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In Vivo application of RNAi to study pain. Ann Neurosci 2014; 17:142-5. [PMID: 25205892 PMCID: PMC4116988 DOI: 10.5214/ans.0972-7531.1017310] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 08/10/2010] [Accepted: 08/22/2010] [Indexed: 11/25/2022] Open
Abstract
Chronic pain is associated with several disease conditions. The inadequacy of current analgesics to treat chronic pain is the result of a lack of understanding of the mechanisms that mediate pain. RNA interference has emerged in recent years as a new way to evaluate the roles of molecules involved in the pain response. Selective knockout of proteins has proven to be a powerful technique for target validation, but has been limited as a potential therapeutic due to short-lived responses induced by RNAi. The short responses of RNAi illustrate the need for better delivery techniques, which is being addressed by current work to induce RNAi through the cell’s natural mechanisms. In order to gain a better understanding of chronic pain, it will be necessary to evaluate the pain molecules that are expressed as part of an injury induced pain response, which can be modeled by contusion spinal cord injury. RNAi will prove to be an important technique in this work. The present minireview will summarize the work that has been done using RNAi in vivo to study pain and discuss future directions for the use of RNAi to study chronic pain.
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46
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Wang J, Zhang H, Feng YP, Meng H, Wu LP, Wang W, Li H, Zhang T, Zhang JS, Li YQ. Morphological evidence for a neurotensinergic periaqueductal gray-rostral ventromedial medulla-spinal dorsal horn descending pathway in rat. Front Neuroanat 2014; 8:112. [PMID: 25346662 PMCID: PMC4191475 DOI: 10.3389/fnana.2014.00112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 09/22/2014] [Indexed: 01/03/2023] Open
Abstract
Neurotensin (NT) is an endogenous neuropeptide that exerts potent opioid-independent analgesic effects, most likely via the type 2 NT receptor (NTR2). Previous morphological and electrophysiological studies suggested that the NT-NTR2 system is primarily localized in structures that constitute the descending pain control pathway, such as the periaqueductal gray (PAG), the rostral ventromedial medulla (RVM), and the spinal dorsal horn (SDH). However, relevant morphological evidence for this neurotensinergic (NTergic) circuit is lacking. Thus, the aim of the present study was to morphologically elucidate the potential sites and connections in the NT-NTR2 system that are involved in the descending pain control pathway. Based on light and electron microscopy combined with anterograde and retrograde tracing, we found evidence that NTR2-immunoreactive (IR) neurons in the RVM receive NT-IR projections originating from the PAG; express NT, serotonin (5-HT), or both; and send projections that terminate in laminae I and II of the SDH. These results suggest that NTR2 may contribute to pain control by binding to NT in the PAG-RVM-SDH pathway. In conclusion, our data provide morphological evidence for an NTergic PAG-RVM-SDH pathway, implicating novel mechanisms of NT-induced analgesia.
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Affiliation(s)
- Jian Wang
- Department of Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University Xi'an, China
| | - Hua Zhang
- Department of Geriatrics, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Yu-Peng Feng
- Department of Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University Xi'an, China
| | - Hua Meng
- Department of Geriatrics, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Li-Ping Wu
- Department of Geriatrics, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Wen Wang
- Department of Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University Xi'an, China
| | - Hui Li
- Department of Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University Xi'an, China
| | - Ting Zhang
- Department of Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University Xi'an, China
| | - Jin-Shan Zhang
- Department of Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University Xi'an, China
| | - Yun-Qing Li
- Department of Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University Xi'an, China
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47
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Henström M, Zucchelli M, Söderhäll C, Bergström A, Kere J, Melén E, Olén O, D'Amato M. NPSR1 polymorphisms influence recurrent abdominal pain in children: a population-based study. Neurogastroenterol Motil 2014; 26:1417-25. [PMID: 25091462 DOI: 10.1111/nmo.12401] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 06/23/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND Recurrent abdominal pain (RAP) occurs frequently among children and is one of the cardinal symptoms of functional gastrointestinal disorders (FGID). The mechanisms of visceral pain and RAP are not fully understood. A heritable component has been demonstrated and a few candidate genes proposed. NPSR1 encodes the receptor for neuropeptide S (NPS) and NPS-NPSR1 signaling is involved in anxiety, inflammation, and nociception. NPSR1 polymorphisms are associated with asthma and chronic inflammatory diseases, but also with IBS-related intermediate phenotypes such as colonic transit time and rectal sensory ratings. Here, we sought to determine whether genetic variability in the NPSR1 gene influences the presence of RAP in children. METHODS Twenty-eight single-nucleotide polymorphisms (SNPs) in the NPSR1 gene region were successfully genotyped in 1744 children from the Swedish birth cohort BAMSE. Questionnaire information was used to define RAP as episodes of abdominal pain occurring at least once a month in 12-year-olds. KEY RESULTS The prevalence of RAP was 9% in BAMSE. Association with RAP was observed for seven NPSR1 SNPs, five of which withstood false discovery rate (FDR) correction for multiple testing (best p = 0.00054, OR: 1.55 for SNP rs2530566). The associated SNPs all map in a putative regulatory region upstream NPSR1, where they may exert their genetic effects through the modulation of gene expression. CONCLUSIONS & INFERENCES Genetic variation at the NPSR1 locus impacts children's predisposition to RAP episodes in a Swedish population.
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Affiliation(s)
- M Henström
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
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48
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Ye Y, Liu P, Wang Y, Li H, Wei F, Cheng Y, Han L, Yu J. Neurotensin, a Novel Messenger to Cross-Link Inflammation and Tumor Invasion via Epithelial-Mesenchymal Transition Pathway. Int Rev Immunol 2014; 35:340-350. [PMID: 25215420 DOI: 10.3109/08830185.2014.952412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Multiple cytokines and growth factors are critical for the prognosis of cancer which has been regarded as a worldwide health problem. Recently, neuropeptides, soluble factors regulating a series of functions in the central nervous system, have also been demonstrated to stimulate the proliferation and migration of tumor cells. Among these signaling peptides, the role of neurotensin (NTS) on malignancy procession has become a hot topic. The effects of NTS on tumor growth and its antiapoptosis role have already been identified. Subsequently, studies demonstrated the impact of NTS on the migration and invasion, but the molecular mechanisms involved are still unclear at present. Recently, some reports indicated that NTS could induce expression and secretion of interleukin-8 (IL-8) to promote local imflammatory response which might participate in epithelial-mesenchymal transition (EMT)-related tumor migration. In present review, we highlight the process of tumor EMT induced by NTS through stimulating IL-8 and the significance of NTS/IL-8 pathway in clinical application prospect.
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Affiliation(s)
- Yingnan Ye
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
| | - Pengpeng Liu
- b Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy , Tianjin , P. R. China
| | - Yue Wang
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
| | - Hui Li
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
| | - Feng Wei
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
| | - Yanan Cheng
- b Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy , Tianjin , P. R. China
| | - Lei Han
- b Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy , Tianjin , P. R. China
| | - Jinpu Yu
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China.,b Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy , Tianjin , P. R. China.,c Biotherapy Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
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49
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Thomas JB, Giddings AM, Wiethe RW, Olepu S, Warner KR, Sarret P, Gendron L, Longpre JM, Zhang Y, Runyon SP, Gilmour BP. Identification of N-[(5-{[(4-methylphenyl)sulfonyl]amino}-3-(trifluoroacetyl)-1H-indol-1-yl)acetyl]-l-leucine (NTRC-824), a neurotensin-like nonpeptide compound selective for the neurotensin receptor type 2. J Med Chem 2014; 57:7472-7. [PMID: 25157640 PMCID: PMC4161155 DOI: 10.1021/jm500857r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
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Compounds acting via the neurotensin
receptor type 2 (NTS2) are
known to be active in animal models of acute and chronic pain. To
identify novel NTS2 selective analgesics, we searched for NTS2 selective
nonpeptide compounds using a FLIPR assay and identified the title
compound (NTRC-824, 5) that, to our knowledge, is the
first nonpeptide that is selective for NTS2 versus NTS1 and behaves
like the endogenous ligand neurotensin in the functional assay.
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Affiliation(s)
- James B Thomas
- Center for Organic and Medicinal Chemistry, Research Triangle Institute , P.O. Box 12194, 3040 Cornwallis Road, Research Triangle Park, North Carolina 27709, United States
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50
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Parabrachial nucleus (PBn) pituitary adenylate cyclase activating polypeptide (PACAP) signaling in the amygdala: implication for the sensory and behavioral effects of pain. Neuropharmacology 2014; 86:38-48. [PMID: 24998751 DOI: 10.1016/j.neuropharm.2014.06.022] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/17/2014] [Accepted: 06/19/2014] [Indexed: 11/22/2022]
Abstract
The intricate relationships that associate pain, stress responses and emotional behavior have been well established. Acute stressful situations can decrease nociceptive sensations and conversely, chronic pain can enhance other pain experiences and heighten the emotional and behavioral consequences of stress. Accordingly, chronic pain is comorbid with a number of behavioral disorders including depression, anxiety abnormalities and associated stress-related disorders including post traumatic stress disorder (PTSD). The central nucleus of the amygdala (CeA) represents a convergence of pathways for pain, stress and emotion, and we have identified pituitary adenylate cyclase activating polypeptide (PACAP) immunoreactivity in fiber elements in the lateral capsular division of the CeA (CeLC). The PACAP staining patterns colocalized in part with those for calcitonin gene related peptide (CGRP); anterograde fiber tracing and excitotoxic lesion studies demonstrated that the CeLC PACAP/CGRP immunoreactivities represented sensory fiber projections from the lateral parabrachial nucleus (LPBn) along the spino-parabrachioamygdaloid tract. The same PBn PACAP/CGRP fiber system also projected to the BNST. As in the BNST, CeA PACAP signaling increased anxiety-like behaviors accompanied by weight loss and decreased feeding. But in addition to heightened anxiety-like responses, CeA PACAP signaling also altered nociception as reflected by decreased latency and threshold responses in thermal and mechanical sensitivity tests, respectively. From PACAP expression in major pain pathways, the current observations are novel and suggest that CeA PACAP nociceptive signaling and resulting neuroplasticity via the spino-parabrachioamygdaloid tract may represent mechanisms that associate chronic pain with sensory hypersensitivity, fear memory consolidation and severe behavioral disorders.
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