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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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Huang ZY, Lyu ZP, Li HG, You HZ, Yang XN, Cha CH. Des-Arg(9) bradykinin as a causal metabolite for autism spectrum disorder. World J Psychiatry 2024; 14:88-101. [PMID: 38327885 PMCID: PMC10845217 DOI: 10.5498/wjp.v14.i1.88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/08/2023] [Accepted: 12/07/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Early diagnosis and therapeutic interventions can greatly enhance the developmental trajectory of children with autism spectrum disorder (ASD). However, the etiology of ASD is not completely understood. The presence of confounding factors from environment and genetics has increased the difficulty of the identification of diagnostic biomarkers for ASD. AIM To estimate and interpret the causal relationship between ASD and metabolite profile, taking into consideration both genetic and environmental influences. METHODS A two-sample Mendelian randomization (MR) analysis was conducted using summarized data from large-scale genome-wide association studies (GWAS) including a metabolite GWAS dataset covering 453 metabolites from 7824 European and an ASD GWAS dataset comprising 18381 ASD cases and 27969 healthy controls. Metabolites in plasma were set as exposures with ASD as the main outcome. The causal relationships were estimated using the inverse variant weight (IVW) algorithm. We also performed leave-one-out sensitivity tests to validate the robustness of the results. Based on the drafted metabolites, enrichment analysis was conducted to interpret the association via constructing a protein-protein interaction network with multi-scale evidence from databases including Infinome, SwissTargetPrediction, STRING, and Metascape. RESULTS Des-Arg(9)-bradykinin was identified as a causal metabolite that increases the risk of ASD (β = 0.262, SE = 0.064, PIVW = 4.64 × 10-5). The association was robust, with no significant heterogeneity among instrument variables (PMR Egger = 0.663, PIVW = 0.906) and no evidence of pleiotropy (P = 0.949). Neuroinflammation and the response to stimulus were suggested as potential biological processes mediating the association between Des-Arg(9) bradykinin and ASD. CONCLUSION Through the application of MR, this study provides practical insights into the potential causal association between plasma metabolites and ASD. These findings offer perspectives for the discovery of diagnostic or predictive biomarkers to support clinical practice in treating ASD.
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Affiliation(s)
- Zhong-Yu Huang
- Center for Medical Research on Innovation and Translation, Institute of Clinical Medicine, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou 510000, Guangdong Province, China
| | - Zi-Pan Lyu
- School of Biological Sciences, Nanyang Technological University, Nanyang Ave 639798, Singapore
| | - Hong-Gui Li
- Department of Pediatrics, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
| | - Hua-Zhi You
- Department of Nutrition, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
| | - Xiang-Na Yang
- Department of Pediatric Traditional Chinese Medicine Clinic, Guangzhou Women and Children's Medical Center, Guangzhou 510632, Guangdong Province, China
| | - Cai-Hui Cha
- Department of Psychology, Guangzhou Women and Children's Medical Center, Guangzhou 510632, Guangdong Province, China
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3
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Singhal SM, Zell V, Faget L, Slosky LM, Barak LS, Caron MG, Pinkerton AB, Hnasko TS. Neurotensin receptor 1-biased ligand attenuates neurotensin-mediated excitation of ventral tegmental area dopamine neurons and dopamine release in the nucleus accumbens. Neuropharmacology 2023; 234:109544. [PMID: 37055008 PMCID: PMC10192038 DOI: 10.1016/j.neuropharm.2023.109544] [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: 12/02/2022] [Revised: 03/29/2023] [Accepted: 04/10/2023] [Indexed: 04/15/2023]
Abstract
Strong expression of the G protein-coupled receptor (GPCR) neurotensin receptor 1 (NTR1) in ventral tegmental area (VTA) dopamine (DA) neurons and terminals makes it an attractive target to modulate DA neuron activity and normalize DA-related pathologies. Recent studies have identified a novel class of NTR1 ligand that shows promising effects in preclinical models of addiction. A lead molecule, SBI-0654553 (SBI-553), can act as a positive allosteric modulator of NTR1 β-arrestin recruitment while simultaneously antagonizing NTR1 Gq protein signaling. Using cell-attached recordings from mouse VTA DA neurons we discovered that, unlike neurotensin (NT), SBI-553 did not independently increase spontaneous firing. Instead, SBI-553 blocked the NT-mediated increase in firing. SBI-553 also antagonized the effects of NT on dopamine D2 auto-receptor signaling, potentially through its inhibitory effects on G-protein signaling. We also measured DA release directly, using fast-scan cyclic voltammetry in the nucleus accumbens and observed antagonist effects of SBI-553 on an NT-induced increase in DA release. Further, in vivo administration of SBI-553 did not notably change basal or cocaine-evoked DA release measured in NAc using fiber photometry. Overall, these results indicate that SBI-553 blunts NT's effects on spontaneous DA neuron firing, D2 auto-receptor function, and DA release, without independently affecting these measures. In the presence of NT, SBI-553 has an inhibitory effect on mesolimbic DA activity, which could contribute to its efficacy in animal models of psychostimulant use.
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Affiliation(s)
- Sarthak M Singhal
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Vivien Zell
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Lauren Faget
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Lauren M Slosky
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | | | - Marc G Caron
- Departments of Cell Biology, Neurobiology and Medicine, Duke University, Durham, NC, USA
| | - Anthony B Pinkerton
- Conrad Prebys Center for Chemical Genomics, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Thomas S Hnasko
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA; Research Service, VA San Diego Healthcare System, San Diego, CA, USA.
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4
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Juza R, Musilek K, Mezeiova E, Soukup O, Korabecny J. Recent advances in dopamine D 2 receptor ligands in the treatment of neuropsychiatric disorders. Med Res Rev 2023; 43:55-211. [PMID: 36111795 DOI: 10.1002/med.21923] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 07/29/2022] [Accepted: 08/09/2022] [Indexed: 02/04/2023]
Abstract
Dopamine is a biologically active amine synthesized in the central and peripheral nervous system. This biogenic monoamine acts by activating five types of dopamine receptors (D1-5 Rs), which belong to the G protein-coupled receptor family. Antagonists and partial agonists of D2 Rs are used to treat schizophrenia, Parkinson's disease, depression, and anxiety. The typical pharmacophore with high D2 R affinity comprises four main areas, namely aromatic moiety, cyclic amine, central linker and aromatic/heteroaromatic lipophilic fragment. From the literature reviewed herein, we can conclude that 4-(2,3-dichlorophenyl), 4-(2-methoxyphenyl)-, 4-(benzo[b]thiophen-4-yl)-1-substituted piperazine, and 4-(6-fluorobenzo[d]isoxazol-3-yl)piperidine moieties are critical for high D2 R affinity. Four to six atoms chains are optimal for D2 R affinity with 4-butoxyl as the most pronounced one. The bicyclic aromatic/heteroaromatic systems are most frequently occurring as lipophilic appendages to retain high D2 R affinity. In this review, we provide a thorough overview of the therapeutic potential of D2 R modulators in the treatment of the aforementioned disorders. In addition, this review summarizes current knowledge about these diseases, with a focus on the dopaminergic pathway underlying these pathologies. Major attention is paid to the structure, function, and pharmacology of novel D2 R ligands, which have been developed in the last decade (2010-2021), and belong to the 1,4-disubstituted aromatic cyclic amine group. Due to the abundance of data, allosteric D2 R ligands and D2 R modulators from patents are not discussed in this review.
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Affiliation(s)
- Radomir Juza
- Experimental Neurobiology, National Institute of Mental Health, Klecany, Czech Republic.,Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Kamil Musilek
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic.,Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Eva Mezeiova
- Experimental Neurobiology, National Institute of Mental Health, Klecany, Czech Republic.,Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Ondrej Soukup
- Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Jan Korabecny
- Experimental Neurobiology, National Institute of Mental Health, Klecany, Czech Republic.,Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
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5
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Lei X, Huang T, Wu X, Mangelings D, Van Eeckhaut A, Bongaerts J, Terryn H, Vander Heyden Y. Fabrication of a molecularly imprinted monolithic column via the epitope approach for the selective capillary microextraction of neuropeptides in human plasma. Talanta 2022; 243:123397. [DOI: 10.1016/j.talanta.2022.123397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 10/18/2022]
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6
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Suchak V, Sathyanath S, Kakunje A. Neuropeptides in psychiatry. ARCHIVES OF MEDICINE AND HEALTH SCIENCES 2022. [DOI: 10.4103/amhs.amhs_91_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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7
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Wan L, Ai JQ, Yang C, Jiang J, Zhang QL, Luo ZH, Huang RJ, Tu T, Pan A, Tu E, Manavis J, Xiao B, Yan XX. Expression of the Excitatory Postsynaptic Scaffolding Protein, Shank3, in Human Brain: Effect of Age and Alzheimer's Disease. Front Aging Neurosci 2021; 13:717263. [PMID: 34504419 PMCID: PMC8421777 DOI: 10.3389/fnagi.2021.717263] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 07/26/2021] [Indexed: 12/14/2022] Open
Abstract
Shank3 is a postsynaptic scaffolding protein of excitatory synapses. Mutations or variations of SHANK3 are associated with various psychiatric and neurological disorders. We set to determine its normal expression pattern in the human brain, and its change, if any, with age and Alzheimer’s disease (AD)-type β-amyloid (Aβ) and Tau pathogenesis. In general, Shank3 immunoreactivity (IR) exhibited largely a neuropil pattern with differential laminar/regional distribution across brain regions. In youth and adults, subsets of pyramidal/multipolar neurons in the cerebrum, striatum, and thalamus showed moderate IR, while some large-sized neurons in the brainstem and the granule cells in the cerebellar cortex exhibited light IR. In double immunofluorescence, Shank3 IR occurred at the sublemmal regions in neuronal somata and large dendrites, apposing to synaptophysin-labeled presynaptic terminals. In aged cases, immunolabeled neuronal somata were reduced, with disrupted neuropil labeling seen in the molecular layer of the dentate gyrus in AD cases. In immunoblot, levels of Shank3 protein were positively correlated with that of the postsynaptic density protein 95 (PSD95) among different brain regions. Levels of Shank3, PSD95, and synaptophysin immunoblotted in the prefrontal, precentral, and cerebellar cortical lysates were reduced in the aged and AD relative to youth and adult groups. Taken together, the differential Shank3 expression among brain structures/regions indicates the varied local density of the excitatory synapses. The enriched Shank3 expression in the forebrain subregions appears inconsistent with a role of this protein in the modulation of high cognitive functions. The decline of its expression in aged and AD brains may relate to the degeneration of excitatory synapses.
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Affiliation(s)
- Lily Wan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Jia-Qi Ai
- Department of Anatomy and Neurobiology, Central South University Xiangya School of Medicine, Changsha, China
| | - Chen Yang
- Department of Anatomy and Neurobiology, Central South University Xiangya School of Medicine, Changsha, China
| | - Juan Jiang
- Department of Anatomy and Neurobiology, Central South University Xiangya School of Medicine, Changsha, China
| | - Qi-Lei Zhang
- Department of Anatomy and Neurobiology, Central South University Xiangya School of Medicine, Changsha, China
| | - Zhao-Hui Luo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Rou-Jie Huang
- Medical Doctor Program, Xiangya School of Medicine, Central South University, Changsha, China
| | - Tian Tu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Aihua Pan
- Department of Anatomy and Neurobiology, Central South University Xiangya School of Medicine, Changsha, China
| | - Ewen Tu
- Department of Neurology, Brain Hospital of Hunan Province, Changsha, China
| | - Jim Manavis
- Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiao-Xin Yan
- Department of Anatomy and Neurobiology, Central South University Xiangya School of Medicine, Changsha, China
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8
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Al-Alem L, Puttabyatappa M, Shrestha K, Choi Y, Rosewell K, Brännström M, Akin J, Jo M, Duffy DM, Curry TE. Neurotensin: a neuropeptide induced by hCG in the human and rat ovary during the periovulatory period†. Biol Reprod 2021; 104:1337-1346. [PMID: 33682882 PMCID: PMC8485077 DOI: 10.1093/biolre/ioab036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/04/2021] [Accepted: 03/02/2021] [Indexed: 01/06/2023] Open
Abstract
Neurotensin (NTS) is a tridecapeptide that was first characterized as a neurotransmitter in neuronal cells. The present study examined ovarian NTS expression across the periovulatory period in the human and the rat. Women were recruited into this study and monitored by transvaginal ultrasound. The dominant follicle was surgically excised prior to the luteinizing hormone (LH) surge (preovulatory phase) or women were given 250 μg human chorionic gonadotropin (hCG) and dominant follicles collected 12-18 h after hCG (early ovulatory), 18-34 h (late ovulatory), and 44-70 h (postovulatory). NTS mRNA was massively induced during the early and late ovulatory stage in granulosa cells (GCs) (15 000 fold) and theca cells (700 fold). In the rat, hCG also induced Nts mRNA expression in intact ovaries and isolated GCs. In cultured granulosa-luteal cells (GLCs) from IVF patients, NTS expression was induced 6 h after hCG treatment, whereas in cultured rat GCs, NTS increased 4 h after hCG treatment. Cells treated with hCG signaling pathway inhibitors revealed that NTS expression is partially regulated in the human and rat GC by the epidermal-like growth factor pathway. Human GLC, and rat GCs also showed that Nts was regulated by the protein kinase A (PKA) pathway along with input from the phosphotidylinositol 3- kinase (PI3K) and mitogen-activated protein kinase (MAPK) pathways. The predominat NTS receptor present in human and rat GCs was SORT1, whereas NTSR1 and NTSR2 expression was very low. Based on NTS actions in other systems, we speculate that NTS may regulate crucial aspects of ovulation such as vascular permeability, inflammation, and cell migration.
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Affiliation(s)
- Linah Al-Alem
- Department of Obstetrics and Gynecology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Muraly Puttabyatappa
- Department of Obstetrics and Gynecology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Ketan Shrestha
- Department of Obstetrics and Gynecology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Yohan Choi
- Department of Obstetrics and Gynecology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Kathy Rosewell
- Department of Obstetrics and Gynecology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Mats Brännström
- Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden,Stockholm IVF, Stockholm, Sweden
| | - James Akin
- Bluegrass Fertility Center, Lexington, KY, USA
| | - Misung Jo
- Department of Obstetrics and Gynecology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Diane M Duffy
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Thomas E Curry
- Department of Obstetrics and Gynecology, College of Medicine, University of Kentucky, Lexington, KY, USA,Correspondence: Department of Obstetrics and Gynecology, Chandler Medical Center, University of Kentucky, 800 Rose Street,Room MS 331, Lexington, KY 40536-0298, USA. E-mail:
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9
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Abstract
Introduction: Neurotensin is a gut-brain peptide hormone, a 13 amino acid neuropeptide found in the central nervous system and in the GI tract. The neurotensinergic system is implicated in various physiological and pathological processes related to neuropsychiatric and metabolic machineries, cancer growth, food, and drug intake. NT mediates its functions through its two G protein-coupled receptors: neurotensin receptor 1 (NTS1/NTSR1) and neurotensin receptor 2 (NTS2/NTSR2). Over the past decade, the role of NTS3/NTSR3/sortilin has also gained importance in human pathologies. Several approaches have appeared dealing with the discovery of compounds able to modulate the functions of this neuropeptide through its receptors for therapeutic gain.Areas covered: The article provides an overview of over four decades of research and details the drug discovery approaches and patented strategies targeting NTSR in the past decade.Expert opinion: Neurotensin is an important neurotransmitter that enables crosstalk with various neurotransmitter and neuroendocrine systems. While significant efforts have been made that have led to selective agonists and antagonists with promising in vitro and in vivo activities, the therapeutic potential of compounds targeting the neurotensinergic system is still to be fully harnessed for successful clinical translation of compounds for the treatment of several pathologies.
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Affiliation(s)
- Malliga R Iyer
- Section on Medicinal Chemistry, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA
| | - George Kunos
- Laboratory of Physiologic Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA
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10
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Bumbak F, Thomas T, Noonan-Williams BJ, Vaid TM, Yan F, Whitehead AR, Bruell S, Kocan M, Tan X, Johnson MA, Bathgate RAD, Chalmers DK, Gooley PR, Scott DJ. Conformational Changes in Tyrosine 11 of Neurotensin Are Required to Activate the Neurotensin Receptor 1. ACS Pharmacol Transl Sci 2020; 3:690-705. [PMID: 32832871 PMCID: PMC7432660 DOI: 10.1021/acsptsci.0c00026] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Indexed: 12/12/2022]
Abstract
Cell-cell communication via endogenous peptides and their receptors is vital for controlling all aspects of human physiology and most peptides signal through G protein-coupled receptors (GPCRs). Disordered peptides bind GPCRs through complex modes for which there are few representative crystal structures. The disordered peptide neurotensin (NT) is a neuromodulator of classical neurotransmitters such as dopamine and glutamate, through activation of neurotensin receptor 1 (NTS1). While several experimental structures show how NT binds NTS1, details about the structural dynamics of NT during and after binding NTS1, or the role of peptide dynamics on receptor activation, remain obscure. Here saturation transfer difference (STD) NMR revealed that the binding mode of NT fragment NT10-13 is heterogeneous. Epitope maps of NT10-13 at NTS1 suggested that tyrosine 11 (Y11) samples other conformations to those observed in crystal structures of NT-bound NTS1. Molecular dynamics (MD) simulations confirmed that when NT is bound to NTS1, residue Y11 can exist in two χ1 rotameric states, gauche plus (g+) or gauche minus (g-). Since only the g+ Y11 state is observed in all the structures solved to date, we asked if the g- state is important for receptor activation. NT analogues with Y11 replaced with 7-OH-Tic were synthesized to restrain the dynamics of the side chain. P(OH-TIC)IL bound NTS1 with the same affinity as NT10-13 but did not activate NTS1, instead acted as an antagonist. This study highlights that flexibility of Y11 in NT may be required for NT activation of NTS1.
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Affiliation(s)
- Fabian Bumbak
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
- Department
of Biochemistry and Molecular Biology, The
University of Melbourne, Parkville, Victoria 3010, Australia
- Bio21
Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Trayder Thomas
- Monash
Institute of Pharmaceutical Sciences, Monash
University, Parkville, Victoria 3052, Australia
| | - Billy J. Noonan-Williams
- Monash
Institute of Pharmaceutical Sciences, Monash
University, Parkville, Victoria 3052, Australia
| | - Tasneem M. Vaid
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
- Department
of Biochemistry and Molecular Biology, The
University of Melbourne, Parkville, Victoria 3010, Australia
- Bio21
Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Fei Yan
- Department
of Biochemistry and Molecular Biology, The
University of Melbourne, Parkville, Victoria 3010, Australia
- Bio21
Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Alice R. Whitehead
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Shoni Bruell
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Martina Kocan
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
- The School
of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Xuan Tan
- Department
of Chemistry, The University of Alabama
at Birmingham, Birmingham, Alabama 35294-1240, United States
| | - Margaret A. Johnson
- Department
of Chemistry, The University of Alabama
at Birmingham, Birmingham, Alabama 35294-1240, United States
| | - Ross A. D. Bathgate
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
- Department
of Biochemistry and Molecular Biology, The
University of Melbourne, Parkville, Victoria 3010, Australia
| | - David K. Chalmers
- Monash
Institute of Pharmaceutical Sciences, Monash
University, Parkville, Victoria 3052, Australia
| | - Paul R. Gooley
- Department
of Biochemistry and Molecular Biology, The
University of Melbourne, Parkville, Victoria 3010, Australia
- Bio21
Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Daniel J. Scott
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
- Department
of Biochemistry and Molecular Biology, The
University of Melbourne, Parkville, Victoria 3010, Australia
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11
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Nani JV, Dal Mas C, Yonamine CM, Ota VK, Noto C, Belangero SI, Mari JJ, Bressan R, Cordeiro Q, Gadelha A, Hayashi MAF. A study in first-episode psychosis patients: does angiotensin I-converting enzyme (ACE) activity associated with genotype predict symptoms severity reductions after treatment with the atypical antipsychotic risperidone? Int J Neuropsychopharmacol 2020; 23:pyaa050. [PMID: 32696960 PMCID: PMC7745254 DOI: 10.1093/ijnp/pyaa050] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Our previous studies showed increased angiotensin I-converting enzyme (ACE) activity in chronic schizophrenia (SCZ) patients compared to healthy control (HC) volunteers, and the relevance of combining ACE genotype and activity for predicting SCZ was suggested. METHODS ACE activity was measured in plasma of ACE insertion/deletion (I/D) genotyped HC volunteers (N = 53) and antipsychotic-naïve first-episode psychosis (FEP) patients (N = 45), assessed at baseline (FEB-B) and also after 2-months (FEP-2M) of treatment with the atypical antipsychotic risperidone. RESULTS ACE activity measurements showed significant differences among HC, FEP-B and FEP-2M groups (F = 5.356, df = 2, p = 0.005), as well as between HC and FEP-2M (post-hoc Tukey's multiple comparisons test, p = 0.004). No correlation was observed for ACE activity increases and symptom severity reductions in FEP as assessed by total PANSS (r = -0.131, p = 0.434). FEP subgrouped by ACE I/D genotype showed significant ACE activity increases, mainly in the DD genotype subgroup. No correlation between ACE activity and age was observed in FEP or HC groups separately (r = 0.210, p = 0.392), but ACE activity levels differences observed between these groups were influenced by age. CONCLUSIONS The importance of measuring the ACE activity in blood plasma, associated to ACE I/D genotyping to support the follow-up of FEP patients did not show correlation with general symptoms amelioration in the present study. However, new insights into the influence of age and I/D genotype for ACE activity changes in FEP individuals upon treatment was demonstrated.
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Affiliation(s)
- João V Nani
- Department of Pharmacology, Universidade Federal de São Paulo (UNIFESP), Brazil
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), Brazil
- National Institute for Translational Medicine (INCT-TM, CNPq), Brazil
| | - Caroline Dal Mas
- Department of Pharmacology, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Camila M Yonamine
- Department of Pharmacology, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Vanessa K Ota
- Department of Genetics, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Cristiano Noto
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), Brazil
- First-episode Psychosis Program, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Sintia I Belangero
- Department of Genetics, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Jair J Mari
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Rodrigo Bressan
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Quirino Cordeiro
- First-episode Psychosis Program, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Ary Gadelha
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), Brazil
| | - Mirian A F Hayashi
- Department of Pharmacology, Universidade Federal de São Paulo (UNIFESP), Brazil
- National Institute for Translational Medicine (INCT-TM, CNPq), Brazil
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12
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Nani JV, Yonamine CM, Castro Musial D, Dal Mas C, Mari JJ, Hayashi MAF. ACE activity in blood and brain axis in an animal model for schizophrenia: Effects of dopaminergic manipulation with antipsychotics and psychostimulants. World J Biol Psychiatry 2020; 21:53-63. [PMID: 30806143 DOI: 10.1080/15622975.2019.1583372] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Objectives: Angiotensin I-converting enzyme (ACE) was initially correlated with schizophrenia (SCZ) in studies showing a correlation of ACE increased enzyme activity with memory impairments. Possible role for ACE in SCZ was also suggested by ACE activity interaction with dopaminergic mechanisms to modulate abnormalities of sensorimotor gating. In addition, we have demonstrated higher ACE activity in blood of SCZ subjects, its implication in cognitive performance in SCZ and its power as a predictor for SCZ diagnosis.Methods: ACE activity was determined in the serum and in selected brain regions of an animal model presenting SCZ-like behaviour, before and after the treatment with typical and atypical antipsychotics, and also in the serum of animals receiving the psychostimulants amphetamine/lisdexamphetamine.Results: Dopaminergic manipulations with antipsychotics and psychostimulants influenced the ACE activity, but with no correlation with the animal blood pressure.Conclusions: The validity of measuring ACE activity in animal blood to predict activity in the CNS, as well as the lack of correlation between the activity and blood pressure, before and after the treatment with antipsychotics, were confirmed here. Correlations of the present findings with data from clinical studies also strengthen the value of this animal model for studying several aspects of SCZ.
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Affiliation(s)
- João V Nani
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.,Department of Psychiatry, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.,National Institute for Translational Medicine (INCT-TM, CNPq/FAPESP/CAPES), Ribeirão Preto, Brazil
| | - Camila M Yonamine
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.,National Institute for Translational Medicine (INCT-TM, CNPq/FAPESP/CAPES), Ribeirão Preto, Brazil
| | - Diego Castro Musial
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Caroline Dal Mas
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.,National Institute for Translational Medicine (INCT-TM, CNPq/FAPESP/CAPES), Ribeirão Preto, Brazil
| | - Jair J Mari
- Department of Psychiatry, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Mirian A F Hayashi
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.,National Institute for Translational Medicine (INCT-TM, CNPq/FAPESP/CAPES), Ribeirão Preto, Brazil
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13
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Carissimi C, Laudadio I, Palone F, Fulci V, Cesi V, Cardona F, Alfonsi C, Cucchiara S, Isoldi S, Stronati L. Functional analysis of gut microbiota and immunoinflammation in children with autism spectrum disorders. Dig Liver Dis 2019; 51:1366-1374. [PMID: 31320306 DOI: 10.1016/j.dld.2019.06.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/21/2019] [Accepted: 06/09/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Recent evidence implicates gut microbiota (GM) and immune alterations in autism spectrum disorders (ASD). We assess GM profile and peripheral levels of immunological, neuronal and bacterial molecules in ASD children and controls. Alarmin HMGB1 was explored as a non-invasive biomarker to monitor gastrointestinal (GI) symptoms. METHODS Thirty ASD children and 14 controls entered into the study. GM metagenomic analysis was performed for 16 ASD patients and 7 controls. GM functional profile was assessed by GO term analysis. Blood levels of IL-1β, TNFα, TGFβ, IL-10, INFγ, IL-8, lipopolysaccharide, Neurotensin, Sortilin1 and GSSG/GSH ratio were analyzed in all subjects by ELISA. Fecal HMGB1 was analyzed by Western blot. RESULTS We observed a significant decrease in bacterial diversity. Furthermore, 82 GO terms underrepresented in ASD. Four of them pointed at 3,3 phenylpropionate catabolism and were imputable to Escherichia coli (E. coli) group. Serum levels of TNFα, TGFβ, NT, and SORT-1 increased in ASD patients. Fecal levels of HMGB1 correlated with GI sign severity in ASD children. CONCLUSIONS We suggest that a decrease of E. coli might affect the propionate catabolism in ASD. We report occurrence of peripheral inflammation in ASD children. We propose fecal HMGB1 as a non-invasive biomarker to detect GI symptoms.
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Affiliation(s)
- Claudia Carissimi
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Ilaria Laudadio
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Francesca Palone
- Department of Pediatrics, Pediatric Gastroenterology and Liver Unit, Sapienza University of Rome, Rome, Italy
| | - Valerio Fulci
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Vincenzo Cesi
- Division of Health Protection Technologies, Territorial and Production Systems Sustainability Department, ENEA, Santa Maria di Galeria, Rome, Italy
| | - Francesco Cardona
- Division of Child Neurology and Psychiatry, Department of Human Neurosciences, Sapienza University of Rome, Policlinico Umberto I Hospital, Rome, Italy
| | - Chiara Alfonsi
- Division of Child Neurology and Psychiatry, Department of Human Neurosciences, Sapienza University of Rome, Policlinico Umberto I Hospital, Rome, Italy
| | - Salvatore Cucchiara
- Department of Pediatrics, Pediatric Gastroenterology and Liver Unit, Sapienza University of Rome, Rome, Italy
| | - Sara Isoldi
- Department of Pediatrics, Pediatric Gastroenterology and Liver Unit, Sapienza University of Rome, Rome, Italy
| | - Laura Stronati
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy.
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14
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Monte GG, Nani JV, de Almeida Campos MR, Dal Mas C, Marins LAN, Martins LG, Tasic L, Mori MA, Hayashi MAF. Impact of nuclear distribution element genes in the typical and atypical antipsychotics effects on nematode Caenorhabditis elegans: Putative animal model for studying the pathways correlated to schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 2019; 92:19-30. [PMID: 30578843 DOI: 10.1016/j.pnpbp.2018.12.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 12/18/2022]
Abstract
The nuclear distribution element genes are conserved from fungus to humans. The nematode Caenorhabditis elegans expresses two isoforms of nuclear distribution element genes, namely nud-1 and nud-2. While nud-1 was functionally demonstrated to be the worm nudC ortholog, bioinformatic analysis revealed that the nud-2 gene encodes the worm ortholog of the mammalian NDE1 (Nuclear Distribution Element 1 or NudE) and NDEL1 (NDE-Like 1 or NudEL) genes, which share overlapping roles in brain development in mammals and also mediate the axon guidance in mammalian and C. elegans neurons. A significantly higher NDEL1 enzyme activity was shown in treatment non-resistant compared to treatment resistant SCZ patients, who essentially present response to the therapy with atypical clozapine but not with typical antipsychotics. Using C. elegans as a model, we tested the consequence of nud genes suppression in the effects of typical and atypical antipsychotics. To assess the role of nud genes and antipsychotic drugs over C. elegans behavior, we measured body bend frequency, egg laying and pharyngeal pumping, which traits are controlled by specific neurons and neurotransmitters known to be involved in SCZ, as dopamine and serotonin. Evaluation of metabolic and behavioral response to the pharmacotherapy with these antipsychotics demonstrates an important unbalance in serotonin pathway in both nud-1 and nud-2 knockout worms, with more significant effects for nud-2 knockout. The present data also show an interesting trend of mutant knockout worm strains to present a metabolic profile closer to that observed for the wild-type animals after the treatment with the typical antipsychotic haloperidol, but which was not observed for the treatment with the atypical antipsychotic clozapine. Paradoxically, behavioral assays showed more evident effects for clozapine than for haloperidol, which is in line with previous studies with rodent animal models and clinical evaluations with SCZ patients. In addition, the validity and reliability of using this experimental animal model to further explore the convergence between the dopamine/serotonin pathways and neurodevelopmental processes was demonstrated here, and the potential usefulness of this model for evaluating the metabolic consequences of treatments with antipsychotics is also suggested.
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Affiliation(s)
- Gabriela Guilherme Monte
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP) São Paulo, Brazil
| | - João V Nani
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP) São Paulo, Brazil
| | | | - Caroline Dal Mas
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP) São Paulo, Brazil
| | - Lucas Augusto Negri Marins
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP) São Paulo, Brazil
| | - Lucas Gelain Martins
- Chemical Biology Laboratory, Department of Organic Chemistry, Institute of Chemistry, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Ljubica Tasic
- Chemical Biology Laboratory, Department of Organic Chemistry, Institute of Chemistry, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Marcelo A Mori
- Departament of Biochemistry and Tissue Biology, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Mirian A F Hayashi
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP) São Paulo, Brazil.
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15
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Neurotensin receptors inhibit mGluR I responses in nigral dopaminergic neurons via a process that undergoes functional desensitization by G-protein coupled receptor kinases. Neuropharmacology 2019; 155:76-88. [PMID: 31128122 DOI: 10.1016/j.neuropharm.2019.05.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 05/09/2019] [Accepted: 05/19/2019] [Indexed: 12/15/2022]
Abstract
Neurotensin (NT) is a 13-amino acid peptide acting as a neuromodulator in the CNS. NT immunoreactive cell bodies, synaptic terminals and receptors (NTS) are intimately associated with the dopaminergic system. In fact, NT exerts a stimulatory action on the dopaminergic (DAergic) neurons of substantia nigra pars compacta (SNpc) and ventral tegmental area by activating a mixed cation conductance, reducing D2-autoinhibition and modulating NMDA and AMPA transmission. In the present work, we describe an inhibitory effect of NT on metabotropic glutamate receptor I (mGluR I) actions in rat SNpc DAergic neurons. NTS and mGluR I share the same Gαq/11-PLC-IP3-Ca2+ intracellular pathway which causes either activation of unspecific cationic conductance or intracellular Ca2+ accumulation. We find that NT inhibits both inward current and the associated intracellular calcium elevation, elicited by the selective mGluR I agonist S-DHPG, in a concentration-dependent manner. This effect is mediated by type 1/2 NT receptors (NTS1/2), as revealed by pharmacological analysis. Activation of other metabotropic receptors, such as muscarinic and GABAB, does not inhibit mGluR I inward currents. PKC, MEK 1-2, calcineurin, clathrin-dependent endocytosis and intracellular Ca2+ elevation are not involved in the NT-mediated modulation of mGluR I responses. Interestingly, inhibition of G-protein coupled receptor kinases (GRKs) 2/3 exacerbates the NT-induced mGluR I inhibition while sustaining the NT-induced inward current during repeated agonist stimulation. These data suggest that GRKs are key molecules regulating either the NT excitation or the cross-talk between NTS1/2 and mGluR I in DAergic neurons of rat midbrain by tuning the degree of NTS1/2 desensitization.
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16
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Xu SY, Zhang QL, Zhang Q, Wan L, Jiang J, Tu T, Manavis J, Pan A, Cai Y, Yan XX. Regional and Cellular Mapping of Sortilin Immunoreactivity in Adult Human Brain. Front Neuroanat 2019; 13:31. [PMID: 30914927 PMCID: PMC6422922 DOI: 10.3389/fnana.2019.00031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 02/21/2019] [Indexed: 11/16/2022] Open
Abstract
Sortilin is a member of the vacuolar protein sorting 10 protein (VPS10P) domain receptor family, which carries out signal transduction and protein transport in cells. Sortilin serves as the third, G-protein uncoupled, receptor of neurotensin that can modulate various brain functions. More recent data indicate an involvement of sortilin in mood disorders, dementia and Alzheimer-type neuropathology. However, data regarding the normal pattern of regional and cellular expression of sortilin in the human brain are not available to date. Using postmortem adult human brains free of neuropathology, the current study determined sortilin immunoreactivity (IR) across the entire brain. Sortilin IR was broadly present in the cerebrum and subcortical structures, localizing to neurons in the somatodendritic compartment, but not to glial cells. In the cerebrum, sortilin IR exhibited differential regional and laminar patterns, with pyramidal, multipolar and polymorphic neurons in cortical layers II–VI, hippocampal formation and amygdaloid complex more distinctly labeled relative to GABAergic interneurons. In the striatum and thalamus, numerous small-to-medium sized neurons showed light IR, with a small group of large sized neurons heavily labeled. In the midbrain and brainstem, sortilin IR was distinct in neurons at the relay centers of descending and ascending neuroanatomical pathways. Dopaminergic neurons in the substantia nigra, cholinergic neurons in the basal nuclei of Meynert and noradrenergic neurons in the locus coeruleus co-expressed strong sortilin IR in double immunofluorescence. In comparison, sortilin IR was weak in the olfactory bulb and cerebellar cortex, with the mitral and Purkinje cells barely visualized. A quantitative analysis was carried out in the lateral, basolateral, and basomedial nuclei of the amygdaloid complex, as well as cortical layers II–VI, which established a positive correlation between the somal size and the intensity of sortilin IR among labeled neurons. Together, the present study demonstrates a predominantly neuronal expression of sortilin in the human brain with substantial regional and cell-type variability. The enriched expression of sortilin in pyramidal, dopaminergic, noradrenergic and cholinergic neurons suggests that this protein may be particularly required for signal transduction, protein trafficking and metabolic homeostasis in populations of relatively large-sized projective neurons.
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Affiliation(s)
- Shu-Yin Xu
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Qi-Lei Zhang
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Qi Zhang
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Lily Wan
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Juan Jiang
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Tian Tu
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Jim Manavis
- SA Pathology, Schools of Medicine and Veterinary Science, Hanson Institute Centre for Neurological Diseases, The University of Adelaide, Adelaide, SA, Australia
| | - Aihua Pan
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China.,Center for Morphological Sciences, School of Basic Medicine, Central South University, Changsha, China
| | - Yan Cai
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China.,Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Xiao-Xin Yan
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Xiangya Hospital, Central South University, Changsha, China
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17
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Xiao Y, Zhao XP. Screening pathways and hub genes involved in osteoclastogenesis by gene expression analysis of circulating monocytes based on Gibbs sampling. Exp Ther Med 2019; 17:2529-2534. [PMID: 30906441 PMCID: PMC6425127 DOI: 10.3892/etm.2019.7225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 01/03/2019] [Indexed: 12/14/2022] Open
Abstract
Differential expression pathways and hub genes in circulating monocytes from healthy Chinese women with high peak bone mass (PBM) vs. low PBM were explored using a Markov chain Monte Carlo (MCMC) algorithm. Human circulating monocytes transcription profiling (containing 14 samples with high PBM and 12 samples with low PBM) and KEGG pathways were all downloaded from the public database. Initial state of all the pathways were constructed and Gibbs sampling was performed to obtain a Markov chain and the posterior values of all the pathways were calculated. The probability (α) of occurrence of each pathway was calculated based on the posterior value and it was adjusted by taking gene expression variation into account. Pathways with αadj >0.8 were considered as differentially expressed pathways. Then, these steps were performed again on all the genes in the differentially expressed pathways to find the hub genes in the differential pathways. After Gibbs sampling, neuroactive ligand-receptor interaction (hsa04080) with αadj = 0.986 was screened out as the differentially expressed pathway. Analyzing the genes in this pathway, three genes (neurotensin, tachykinin receptor 3 and follicle-stimulating hormone receptor) with αadj >0.8 were identified as hub genes in circulating monocytes which may associate with osteoporosis development. One pathway and three genes which may possess close relationship with osteoporosis development were found in this study. These results provide insights into our understanding of the role of circulating monocytes in osteoporosis development.
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Affiliation(s)
- Yu Xiao
- Department of Joint, Tianjin Hospital, Hexi, Tianjin 300211, P.R. China
| | - Xue-Ping Zhao
- Department of Orthopedics, Guizhou Space Hospital, Zunyi, Guizhou 563000, P.R. China
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18
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Muehlmann AM, Wolfman SL, Devine DP. The role of neurotensin in vulnerability for self-injurious behaviour: studies in a rodent model. JOURNAL OF INTELLECTUAL DISABILITY RESEARCH : JIDR 2018; 62:997-1007. [PMID: 30033601 DOI: 10.1111/jir.12519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/10/2018] [Accepted: 06/14/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Self-injurious behaviour is a debilitating characteristic that is commonly expressed in people with autism and other neurodevelopmental disorders, but the neurobiological basis of this maladaptive behaviour is not understood. Abnormal dopaminergic and glutamatergic neurotransmission has been implicated, especially in relation to basal ganglia and mesocorticolimbic circuits. As neurotensin is an important modulator of dopamine and glutamate in these circuits, we investigated its potential role in vulnerability for self-injury, using the pemoline model in rats. METHODS Male Long-Evans rats were injected once daily with the psychostimulant pemoline or peanut oil vehicle on each of five consecutive days. Self-injury was quantified by measuring the area of injuries for each rat on each day of the experiment. Each brain was harvested on the sixth day, and the striatum and ventral tegmentum were dissected. Neurotensin-like immunoreactivity was quantified by radioimmunoassay from the dissected brain regions of some of the rats. Membrane and intracellular neurotensin receptor NTS1 were assayed from the striata of the remaining pemoline-treated or vehicle-treated rats by Western blot. In an additional experiment, male Long-Evans rats were treated with daily injections of vehicle or pemoline, and the NTS1 neurotensin receptor agonist PD149163 or the NTS1 receptor antagonist SR48692 (or respective vehicle solutions) was co-administered twice daily throughout the pemoline treatment regimen. The areas of injured tissue were measured, and the duration of self-injurious oral contact was quantified by video-recorded time samples throughout each day. RESULTS Striatal neurotensin immunoreactivity was found to be significantly higher in pemoline-treated than in vehicle-treated rats. Moreover, both membrane-bound and intracellular levels of NTS1 receptor were significantly higher in the striata of pemoline-treated rats than in the striata of the vehicle-treated controls. When the NTS1 receptor agonist PD149163 was co-administered during the pemoline treatment regimen, it prolonged the daily durations of self-injurious oral contact and increased the severity of the injuries in the self-injurious rats. Conversely, co-administration of the NTS1 receptor antagonist SR48692 diminished the daily durations of self-injurious oral contact and decreased the severity of the injuries. CONCLUSIONS The elevation of striatal neurotensin immunoreactivity during pemoline treatment, coupled with the effects of the NTS1 agonist and antagonist, suggests that neurotensin transmission in the striatum may be an important modulator of self-injurious behaviour in the pemoline model. Overall, the convergence of the behavioural and biochemical findings suggests that neurotensin signalling could be an important target for pharmacotherapeutic interventions for self-injurious behaviour.
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Affiliation(s)
- A M Muehlmann
- Department of Psychiatry, University of Florida, Gainesville, FL, USA
| | - S L Wolfman
- Department of Psychology, Behavioural and Cognitive Neuroscience Program, University of Florida, Gainesville, FL, USA
| | - D P Devine
- Department of Psychology, Behavioural and Cognitive Neuroscience Program, University of Florida, Gainesville, FL, USA
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19
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Woodworth HL, Brown JA, Batchelor HM, Bugescu R, Leinninger GM. Determination of neurotensin projections to the ventral tegmental area in mice. Neuropeptides 2018; 68:57-74. [PMID: 29478718 PMCID: PMC5906039 DOI: 10.1016/j.npep.2018.02.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 01/11/2018] [Accepted: 02/11/2018] [Indexed: 12/15/2022]
Abstract
Pharmacologic treatment with the neuropeptide neurotensin (Nts) modifies motivated behaviors such as feeding, locomotor activity, and reproduction. Dopamine (DA) neurons of the ventral tegmental area (VTA) control these behaviors, and Nts directly modulates the activity of DA neurons via Nts receptor-1. While Nts sources to the VTA have been described in starlings and rats, the endogenous sources of Nts to the VTA of mice remain incompletely understood, impeding determination of which Nts circuits orchestrate specific behaviors in this model. To overcome this obstacle we injected the retrograde tracer Fluoro-Gold into the VTA of mice that express GFP in Nts neurons. Identification of GFP-Nts cells that accumulate Fluoro-Gold revealed the Nts afferents to the VTA in mice. Similar to rats, most Nts afferents to the VTA of mice arise from the medial and lateral preoptic areas (POA) and the lateral hypothalamic area (LHA), brain regions that are critical for coordination of feeding and reproduction. Additionally, the VTA receives dense input from Nts neurons in the nucleus accumbens shell (NAsh) of mice, and minor Nts projections from the amygdala and periaqueductal gray area. Collectively, our data reveal multiple populations of Nts neurons that provide direct afferents to the VTA and which may regulate specific aspects of motivated behavior. This work lays the foundation for understanding endogenous Nts actions in the VTA, and how circuit-specific Nts modulation may be useful to correct motivational and affective deficits in neuropsychiatric disease.
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Affiliation(s)
| | - Juliette A Brown
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
| | - Hannah M Batchelor
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Raluca Bugescu
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Gina M Leinninger
- Department of Physiology, Michigan State University, East Lansing, MI, USA.
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20
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Identification of Neurotensin Receptor Expressing Cells in the Ventral Tegmental Area across the Lifespan. eNeuro 2018; 5:eN-NWR-0191-17. [PMID: 29464190 PMCID: PMC5815659 DOI: 10.1523/eneuro.0191-17.2018] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 01/15/2018] [Accepted: 01/25/2018] [Indexed: 11/21/2022] Open
Abstract
Neurotensin (Nts) promotes activation of dopamine (DA) neurons in the ventral tegmental area (VTA) via incompletely understood mechanisms. Nts can signal via the G protein-coupled Nts receptors 1 and 2 (NtsR1 and NtsR2), but the lack of methods to detect NtsR1- and NtsR2-expressing cells has limited mechanistic understanding of Nts action. To overcome this challenge, we generated dual recombinase mice that express FlpO-dependent Cre recombinase in NtsR1 or NtsR2 cells. This strategy permitted temporal control over recombination, such that we could identify NtsR1- or NtsR2-expressing cells and determine whether their distributions differed between the developing and adult brain. Using this system, we found that NtsR1 is transiently expressed in nearly all DA neurons and in many non-DA neurons in the VTA during development. However, NtsR1 expression is more restricted within the adult brain, where only two thirds of VTA DA neurons expressed NtsR1. By contrast, NtsR2 expression remains constant throughout lifespan, but it is predominantly expressed within glia. Anterograde tract tracing revealed that NtsR1 is expressed by mesolimbic, not mesocortical DA neurons, suggesting that VTA NtsR1 neurons may represent a functionally unique subset of VTA DA neurons. Collectively, this work reveals a cellular mechanism by which Nts can directly engage NtsR1-expressing DA neurons to modify DA signaling. Going forward, the dual recombinase strategy developed here will be useful to selectively modulate NtsR1- and NtsR2-expressing cells and to parse their contributions to Nts-mediated behaviors.
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21
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Schroeder LE, Leinninger GM. Role of central neurotensin in regulating feeding: Implications for the development and treatment of body weight disorders. Biochim Biophys Acta Mol Basis Dis 2017; 1864:900-916. [PMID: 29288794 DOI: 10.1016/j.bbadis.2017.12.036] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/11/2017] [Accepted: 12/26/2017] [Indexed: 02/06/2023]
Abstract
The peptide neurotensin (Nts) was discovered within the brain over 40years ago and is implicated in regulating analgesia, body temperature, blood pressure, locomotor activity and feeding. Recent evidence suggests, however, that these disparate processes may be controlled via specific populations of Nts neurons and receptors. The neuronal mediators of Nts anorectic action are now beginning to be understood, and, as such, modulating specific Nts pathways might be useful in treating feeding and body weight disorders. This review considers mechanisms through which Nts normally regulates feeding and how disruptions in Nts signaling might contribute to the disordered feeding and body weight of schizophrenia, Parkinson's disease, anorexia nervosa, and obesity. Defining how Nts specifically mediates feeding vs. other aspects of physiology will inform the design of therapeutics that modify body weight without disrupting other important Nts-mediated physiology.
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Affiliation(s)
- Laura E Schroeder
- Department of Physiology, Michigan State University, East Lansing, MI 48823, United States
| | - Gina M Leinninger
- Department of Physiology, Michigan State University, East Lansing, MI 48823, United States.
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22
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Tarahovsky YS, Fadeeva IS, Komelina NP, Khrenov MO, Zakharova NM. Antipsychotic inductors of brain hypothermia and torpor-like states: perspectives of application. Psychopharmacology (Berl) 2017; 234:173-184. [PMID: 27933367 DOI: 10.1007/s00213-016-4496-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 11/26/2016] [Indexed: 12/12/2022]
Abstract
Hypothermia and hypometabolism (hypometabothermia) normally observed during natural hibernation and torpor, allow animals to protect their body and brain against the damaging effects of adverse environment. A similar state of hypothermia can be achieved under artificial conditions through physical cooling or pharmacological effects directed at suppression of metabolism and the processes of thermoregulation. In these conditions called torpor-like states, the mammalian ability to recover from stroke, heart attack, and traumatic injuries greatly increases. Therefore, the development of therapeutic methods for different pathologies is a matter of great concern. With the discovery of the antipsychotic drug chlorpromazine in the 1950s of the last century, the first attempts to create a pharmacologically induced state of hibernation for therapeutic purposes were made. That was the beginning of numerous studies in animals and the broad use of therapeutic hypothermia in medicine. Over the last years, many new agents have been discovered which were capable of lowering the body temperature and inhibiting the metabolism. The psychotropic agents occupy a significant place among them, which, in our opinion, is not sufficiently recognized in the contemporary literature. In this review, we summarized the latest achievements related to the ability of modern antipsychotics to target specific receptors in the brain, responsible for the initiation of hypometabothermia.
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Affiliation(s)
- Yury S Tarahovsky
- Institute of Cell Biophysics RAS, Pushchino, Moscow Region, Russian Federation, 142290. .,Institute of Theoretical and Experimental Biophysics RAS, Pushchino, Moscow Region, Russian Federation, 142290.
| | - Irina S Fadeeva
- Institute of Cell Biophysics RAS, Pushchino, Moscow Region, Russian Federation, 142290.,Institute of Theoretical and Experimental Biophysics RAS, Pushchino, Moscow Region, Russian Federation, 142290
| | - Natalia P Komelina
- Institute of Cell Biophysics RAS, Pushchino, Moscow Region, Russian Federation, 142290
| | - Maxim O Khrenov
- Institute of Cell Biophysics RAS, Pushchino, Moscow Region, Russian Federation, 142290
| | - Nadezhda M Zakharova
- Institute of Cell Biophysics RAS, Pushchino, Moscow Region, Russian Federation, 142290
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23
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Abstract
Neurotensin (NT) is a neuropeptide that acts as a neurotransmitter and neuromodulator in the central nervous system. Several studies suggest a therapeutic role for NT analogs in nicotine and other psychostimulant addictions. We studied the effects of the nonselective NT receptor agonist NT69L, which has equal affinity for the two major NT receptors, NTS1 and NTS2, on the expression of cocaine-conditioned place preference (cocaine-CPP) and reinstatement after extinction. Robust cocaine-CPP was obtained after 5 days of conditioning. Extinction was induced using eight repeated daily injections of saline. Reinstatement was prompted by priming with one injection of cocaine (12 mg/kg intraperitoneally). On the test day, NT69L (1 mg/kg intraperitoneally) was administered 30 min before assessing cocaine-CPP. Extinction led to the loss of cocaine-CPP. One injection of cocaine (12 mg/kg intraperitoneally) for cocaine priming reinstated cocaine-CPP. NT69L blocked cocaine-CPP reinstatement in cocaine-primed animals. In addition, NT69L blocked cocaine-CPP reinstatement when administered before priming with cocaine. Thus, the NT agonist NT69L blocked both cocaine-CPP and reinstatement to cocaine preference. NT69L may exert this action by modulating the mesocorticolimbic dopamine and glutamatergic pathways involved in addiction and relapse processes. Therefore, NT agonists may represent a novel therapy for the treatment of addiction to cocaine and possibly to other psychostimulants.
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24
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Hübner H, Schellhorn T, Gienger M, Schaab C, Kaindl J, Leeb L, Clark T, Möller D, Gmeiner P. Structure-guided development of heterodimer-selective GPCR ligands. Nat Commun 2016; 7:12298. [PMID: 27457610 PMCID: PMC4963535 DOI: 10.1038/ncomms12298] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Accepted: 06/16/2016] [Indexed: 12/18/2022] Open
Abstract
Crystal structures of G protein-coupled receptor (GPCR) ligand complexes allow a rational design of novel molecular probes and drugs. Here we report the structure-guided design, chemical synthesis and biological investigations of bivalent ligands for dopamine D2 receptor/neurotensin NTS1 receptor (D2R/NTS1R) heterodimers. The compounds of types 1–3 consist of three different D2R pharmacophores bound to an affinity-generating lipophilic appendage, a polyethylene glycol-based linker and the NTS1R agonist NT(8-13). The bivalent ligands show binding affinity in the picomolar range for cells coexpressing both GPCRs and unprecedented selectivity (up to three orders of magnitude), compared with cells that only express D2Rs. A functional switch is observed for the bivalent ligands 3b,c inhibiting cAMP formation in cells singly expressing D2Rs but stimulating cAMP accumulation in D2R/NTS1R-coexpressing cells. Moreover, the newly synthesized bivalent ligands show a strong, predominantly NTS1R-mediated β-arrestin-2 recruitment at the D2R/NTS1R-coexpressing cells. G protein-coupled receptors (GPCRs) are involved in key signalling pathways and represent important targets for the treatment of neurological and psychiatric disorders. Here, the authors describe powerful bivalent ligands that efficiently bind to therapeutically relevant GPCR heterodimers
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Affiliation(s)
- Harald Hübner
- Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, Erlangen 91052, Germany
| | - Tamara Schellhorn
- Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, Erlangen 91052, Germany
| | - Marie Gienger
- Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, Erlangen 91052, Germany
| | - Carolin Schaab
- Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, Erlangen 91052, Germany
| | - Jonas Kaindl
- Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, Erlangen 91052, Germany.,Department of Chemistry and Pharmacy, Computer-Chemie-Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstraße 25, Erlangen 91052, Germany
| | - Laurin Leeb
- Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, Erlangen 91052, Germany
| | - Timothy Clark
- Department of Chemistry and Pharmacy, Computer-Chemie-Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstraße 25, Erlangen 91052, Germany.,Centre for Molecular Design, University of Portsmouth, King Henry Building, Portsmouth PO1 2DY, UK
| | - Dorothee Möller
- Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, Erlangen 91052, Germany
| | - Peter Gmeiner
- Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, Erlangen 91052, Germany
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25
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Spada J, Scholz M, Kirsten H, Hensch T, Horn K, Jawinski P, Ulke C, Burkhardt R, Wirkner K, Loeffler M, Hegerl U, Sander C. Genome-wide association analysis of actigraphic sleep phenotypes in the LIFE Adult Study. J Sleep Res 2016; 25:690-701. [PMID: 27126917 DOI: 10.1111/jsr.12421] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 03/25/2016] [Indexed: 12/28/2022]
Abstract
The genetic basis of sleep is still poorly understood. Despite the moderate to high heritability of sleep-related phenotypes, known genetic variants explain only a small proportion of the phenotypical variance. However, most previous studies were based solely upon self-report measures. The present study aimed to conduct the first genome-wide association (GWA) of actigraphic sleep phenotypes. The analyses included 956 middle- to older-aged subjects (40-79 years) from the LIFE Adult Study. The SenseWear Pro 3 Armband was used to collect 11 actigraphic parameters of night- and daytime sleep and three parameters of rest (lying down). The parameters comprised measures of sleep timing, quantity and quality. A total of 7 141 204 single nucleotide polymorphisms (SNPs) were analysed after imputation and quality control. We identified several variants below the significance threshold of P ≤ 5× 10-8 (not corrected for analysis of multiple traits). The most significant was a hit near UFL1 associated with sleep efficiency on weekdays (P = 1.39 × 10-8 ). Further SNPs were close to significance, including an association between sleep latency and a variant in CSNK2A1 (P = 8.20 × 10-8 ), a gene known to be involved in the regulation of circadian rhythm. In summary, our GWAS identified novel candidate genes with biological plausibility being promising candidates for replication and further follow-up studies.
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Affiliation(s)
- Janek Spada
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, Universität Leipzig, Leipzig, Germany.,Depression Research Centre, German Depression Foundation, Leipzig, Germany
| | - Markus Scholz
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Institute for Medical Informatics, Statistics and Epidemiology (IMISE), Universität Leipzig, Leipzig, Germany
| | - Holger Kirsten
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Institute for Medical Informatics, Statistics and Epidemiology (IMISE), Universität Leipzig, Leipzig, Germany
| | - Tilman Hensch
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, Universität Leipzig, Leipzig, Germany
| | - Katrin Horn
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Institute for Medical Informatics, Statistics and Epidemiology (IMISE), Universität Leipzig, Leipzig, Germany
| | - Philippe Jawinski
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, Universität Leipzig, Leipzig, Germany.,Depression Research Centre, German Depression Foundation, Leipzig, Germany
| | - Christine Ulke
- Department of Psychiatry and Psychotherapy, Universität Leipzig, Leipzig, Germany.,Depression Research Centre, German Depression Foundation, Leipzig, Germany
| | - Ralph Burkhardt
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Kerstin Wirkner
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany
| | - Markus Loeffler
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Institute for Medical Informatics, Statistics and Epidemiology (IMISE), Universität Leipzig, Leipzig, Germany
| | - Ulrich Hegerl
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, Universität Leipzig, Leipzig, Germany.,Depression Research Centre, German Depression Foundation, Leipzig, Germany
| | - Christian Sander
- LIFE-Leipzig Research Center for Civilization Diseases, Universität Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, Universität Leipzig, Leipzig, Germany.,Depression Research Centre, German Depression Foundation, Leipzig, Germany
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26
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Antipsychotic-like effects of a neurotensin receptor type 1 agonist. Behav Brain Res 2016; 305:8-17. [PMID: 26909848 DOI: 10.1016/j.bbr.2016.02.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 02/16/2016] [Accepted: 02/18/2016] [Indexed: 12/26/2022]
Abstract
Although neurotensin (NT) analogs are known to produce antipsychotic-like effects, the therapeutic possibility of a brain penetrant NTS1 agonist in treating psychiatric disorders has not been well studied. Here, we examined whether PD149163, a brain-penetrant NTS1-specific agonist, displays antipsychotic-like effects in C57BL/6J mice by investigating the effect of PD149163 on amphetamine-mediated hyperactivity and amphetamine-induced disruption of prepulse inhibition. In addition, we assessed the effect of PD149163 on glycogen synthase kinase-3 (GSK-3) activity, a downstream molecular target of antipsychotics and mood stabilizers, using phospho-specific antibodies. PD149163 (0.1 and 0.5mg/kg) inhibited amphetamine-induced hyperactivity in mice, indicating that NTS1 activation inhibits psychomotor agitation. PD149163 (0.5mg/kg) also increased prepulse inhibition, suggesting that NTS1 activation reduces prepulse inhibition deficits which often co-occur with psychosis in humans. Interestingly, PD149163 increased the inhibitory serine phosphorylation on both GSK-3α and GSK-3β in a dose- and time-dependent manner in the nucleus accumbens and medial prefrontal cortex of the mice. Moreover, PD149163 inhibited GSK-3 activity in the nucleus accumbens and medial prefrontal cortex in the presence of amphetamine. Thus, like most current antipsychotics and mood stabilizers, PD149163 inhibited GSK-3 activity in cortico-striatal circuitry. Together, our findings indicate that PD149163 may be a novel antipsychotic.
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27
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Ferraro L, Tiozzo Fasiolo L, Beggiato S, Borelli AC, Pomierny-Chamiolo L, Frankowska M, Antonelli T, Tomasini MC, Fuxe K, Filip M. Neurotensin: A role in substance use disorder? J Psychopharmacol 2016; 30:112-27. [PMID: 26755548 DOI: 10.1177/0269881115622240] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Neurotensin is a tridecapeptide originally identified in extracts of bovine hypothalamus. This peptide has a close anatomical and functional relationship with the mesocorticolimbic and nigrostriatal dopamine system. Neural circuits containing neurotensin were originally proposed to play a role in the mechanism of action of antipsychotic agents. Additionally, neurotensin-containing pathways were demonstrated to mediate some of the rewarding and/or sensitizing properties of drugs of abuse.This review attempts to contribute to the understanding of the role of neurotensin and its receptors in drug abuse. In particular, we will summarize the potential relevance of neurotensin, its related compounds and neurotensin receptors in substance use disorders, with a focus on the preclinical research.
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Affiliation(s)
- Luca Ferraro
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Laura Tiozzo Fasiolo
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Sarah Beggiato
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Andrea C Borelli
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | | | - Malgorzata Frankowska
- Laboratory of Drug Addiction Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
| | - Tiziana Antonelli
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Maria C Tomasini
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Kjell Fuxe
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Malgorzata Filip
- Laboratory of Drug Addiction Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
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28
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Levran O, Peles E, Randesi M, Correa da Rosa J, Ott J, Rotrosen J, Adelson M, Kreek MJ. Synaptic Plasticity and Signal Transduction Gene Polymorphisms and Vulnerability to Drug Addictions in Populations of European or African Ancestry. CNS Neurosci Ther 2015; 21:898-904. [PMID: 26384852 PMCID: PMC4619135 DOI: 10.1111/cns.12450] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 08/01/2015] [Accepted: 08/14/2015] [Indexed: 12/23/2022] Open
Abstract
AIM Drug addiction is characterized, in part, by deregulation of synaptic plasticity in circuits involved in reward, stress, cue learning, and memory. This study was designed to assess whether 185 variants in 32 genes central to synaptic plasticity and signal transduction contribute to vulnerability to develop heroin and/or cocaine addiction. METHODS Analyses were conducted in a sample of 1860 subjects divided according to ancestry (African and European) and drug of abuse (heroin or cocaine). RESULTS Eighteen SNPs in 11 genes (CDK5R1, EPHA4, EPHA6, FOSL2, MAPK3, MBP, MPDZ, NFKB1, NTRK2, NTSR1, and PRKCE) showed significant associations (P < 0.01), but the signals did not survive correction for multiple testing. SNP rs230530 in the NFKB1 gene, encoding the transcription regulator NF-kappa-B, was the only SNP indicated in both ancestry groups and both addictions. This SNP was previously identified in association with alcohol addiction. SNP rs3915568 in NTSR1, which encodes neurotensin receptor, and SNP rs1389752 in MPDZ, which encodes the multiple PDZ domain protein, were previously associated with heroin addiction or alcohol addiction, respectively. CONCLUSIONS The study supports the involvement of genetic variation in signal transduction pathways in heroin and cocaine addiction and provides preliminary evidence suggesting several new risk or protective loci that may be relevant for diagnosis and treatment success.
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Affiliation(s)
- Orna Levran
- The Laboratory of the Biology of Addictive DiseasesThe Rockefeller UniversityNew YorkNYUSA
| | - Einat Peles
- Dr. Miriam and Sheldon G. Adelson Clinic for Drug Abuse Treatment and ResearchTel Aviv Elias Sourasky Medical CenterTel AvivIsrael
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
| | - Matthew Randesi
- The Laboratory of the Biology of Addictive DiseasesThe Rockefeller UniversityNew YorkNYUSA
| | - Joel Correa da Rosa
- Center for Clinical and Translational ScienceThe Rockefeller UniversityNew YorkNYUSA
| | - Jurg Ott
- Institute of PsychologyChinese Academy of SciencesBeijingChina
- The Laboratory of Statistical GeneticsThe Rockefeller UniversityNew YorkNYUSA
| | - John Rotrosen
- VA New York Harbor Healthcare SystemNYU School of MedicineNew YorkNYUSA
| | - Miriam Adelson
- The Laboratory of the Biology of Addictive DiseasesThe Rockefeller UniversityNew YorkNYUSA
- Dr. Miriam and Sheldon G. Adelson Clinic for Drug Abuse Treatment and ResearchTel Aviv Elias Sourasky Medical CenterTel AvivIsrael
- Dr. Miriam and Sheldon G. Adelson Clinic for Drug Abuse Treatment and ResearchLas VegasNVUSA
| | - Mary Jeanne Kreek
- The Laboratory of the Biology of Addictive DiseasesThe Rockefeller UniversityNew YorkNYUSA
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29
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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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