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Nasrallah K, Berthoux C, Hashimotodani Y, Chávez AE, Gulfo MC, Luján R, Castillo PE. Retrograde adenosine/A 2A receptor signaling facilitates excitatory synaptic transmission and seizures. Cell Rep 2024; 43:114382. [PMID: 38905101 DOI: 10.1016/j.celrep.2024.114382] [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: 08/10/2022] [Revised: 12/12/2023] [Accepted: 06/03/2024] [Indexed: 06/23/2024] Open
Abstract
Retrograde signaling at the synapse is a fundamental way by which neurons communicate and neuronal circuit function is fine-tuned upon activity. While long-term changes in neurotransmitter release commonly rely on retrograde signaling, the mechanisms remain poorly understood. Here, we identified adenosine/A2A receptor (A2AR) as a retrograde signaling pathway underlying presynaptic long-term potentiation (LTP) at a hippocampal excitatory circuit critically involved in memory and epilepsy. Transient burst activity of a single dentate granule cell induced LTP of mossy cell synaptic inputs, a BDNF/TrkB-dependent form of plasticity that facilitates seizures. Postsynaptic TrkB activation released adenosine from granule cells, uncovering a non-conventional BDNF/TrkB signaling mechanism. Moreover, presynaptic A2ARs were necessary and sufficient for LTP. Lastly, seizure induction released adenosine in a TrkB-dependent manner, while removing A2ARs or TrkB from the dentate gyrus had anti-convulsant effects. By mediating presynaptic LTP, adenosine/A2AR retrograde signaling may modulate dentate gyrus-dependent learning and promote epileptic activity.
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Affiliation(s)
- Kaoutsar Nasrallah
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Coralie Berthoux
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Yuki Hashimotodani
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Andrés E Chávez
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Michelle C Gulfo
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Rafael Luján
- Instituto de Biomedicina de la UCLM (IB-UCLM), Facultad de Medicina, Universidad Castilla-La Mancha, 02008 Albacete, Spain
| | - Pablo E Castillo
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Department of Psychiatry & Behavioral Sciences, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
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2
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Gupta R, Dittmeier M, Wohlleben G, Nickl V, Bischler T, Luzak V, Wegat V, Doll D, Sodmann A, Bady E, Langlhofer G, Wachter B, Havlicek S, Gupta J, Horn E, Lüningschrör P, Villmann C, Polat B, Wischhusen J, Monoranu CM, Kuper J, Blum R. Atypical cellular responses mediated by intracellular constitutive active TrkB (NTRK2) kinase domains and a solely intracellular NTRK2-fusion oncogene. Cancer Gene Ther 2024:10.1038/s41417-024-00809-0. [PMID: 39039193 DOI: 10.1038/s41417-024-00809-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 06/25/2024] [Accepted: 07/11/2024] [Indexed: 07/24/2024]
Abstract
Trk (NTRK) receptor and NTRK gene fusions are oncogenic drivers of a wide variety of tumors. Although Trk receptors are typically activated at the cell surface, signaling of constitutive active Trk and diverse intracellular NTRK fusion oncogenes is barely investigated. Here, we show that a high intracellular abundance is sufficient for neurotrophin-independent, constitutive activation of TrkB kinase domains. In HEK293 cells, constitutive active TrkB kinase and an intracellular NTRK2-fusion oncogene (SQSTM1-NTRK2) reduced actin filopodia dynamics, phosphorylated FAK, and altered the cell morphology. Atypical cellular responses could be mimicked with the intracellular kinase domain, which did not activate the Trk-associated MAPK/ERK pathway. In glioblastoma-like U87MG cells, expression of TrkB or SQSTM1-NTRK2 reduced cell motility and caused drastic changes in the transcriptome. Clinically approved Trk inhibitors or mutating Y705 in the kinase domain, blocked the cellular effects and transcriptome changes. Atypical signaling was also seen for TrkA and TrkC. Moreover, hallmarks of atypical pTrk kinase were found in biopsies of Nestin-positive glioblastoma. Therefore, we suggest Western blot-like immunoassay screening of NTRK-related (brain) tumor biopsies to identify patients with atypical panTrk or phosphoTrk signals. Such patients could be candidates for treatment with NTRK inhibitors such as Larotrectinhib or Entrectinhib.
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Affiliation(s)
- Rohini Gupta
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
| | - Melanie Dittmeier
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
| | - Gisela Wohlleben
- Department of Radiation Oncology, University of Würzburg, Würzburg, Germany
| | - Vera Nickl
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Thorsten Bischler
- Core Unit Systems Medicine, University of Würzburg, Würzburg, Germany
| | - Vanessa Luzak
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
- Ludwig-Maximilians-Universität München, Biomedizinisches Zentrum, Planegg, Germany
| | - Vanessa Wegat
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
- Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB, Bio- Elektro- und Chemokatalyse BioCat, Straubing, Germany
| | - Dennis Doll
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
| | - Annemarie Sodmann
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Elena Bady
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Georg Langlhofer
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
| | - Britta Wachter
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
| | - Steven Havlicek
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
- Neurona Therapeutics, 170 Harbor Way, South San Francisco, CA, USA
| | - Jahnve Gupta
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Evi Horn
- Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany
| | - Patrick Lüningschrör
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
| | - Carmen Villmann
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany
| | - Bülent Polat
- Department of Radiation Oncology, University of Würzburg, Würzburg, Germany
| | - Jörg Wischhusen
- Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany
| | - Camelia M Monoranu
- Department of Neuropathology, Institute of Pathology, University of Würzburg, Würzburg, Germany
| | - Jochen Kuper
- Rudolf Virchow Center for Experimental Biomedicine, Institute for Structural Biology, University of Würzburg, Würzburg, Germany
| | - Robert Blum
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany.
- Institute of Clinical Neurobiology, University Hospital Würzburg, Würzburg, Germany.
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3
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Philibert CE, Disdier C, Lafon PA, Bouyssou A, Oosterlaken M, Galant S, Pizzoccaro A, Tuduri P, Ster J, Liu J, Kniazeff J, Pin JP, Rondard P, Marin P, Vandermoere F. TrkB receptor interacts with mGlu 2 receptor and mediates antipsychotic-like effects of mGlu 2 receptor activation in the mouse. SCIENCE ADVANCES 2024; 10:eadg1679. [PMID: 38277461 PMCID: PMC10816717 DOI: 10.1126/sciadv.adg1679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 12/28/2023] [Indexed: 01/28/2024]
Abstract
Metabotropic glutamate receptor 2 (mGlu2) attracts particular attention as a possible target for a new class of antipsychotics. However, the signaling pathways transducing the effects of mGlu2 in the brain remain poorly characterized. Here, we addressed this issue by identifying native mGlu2 interactome in mouse prefrontal cortex. Nanobody-based affinity purification and mass spectrometry identified 149 candidate mGlu2 partners, including the neurotrophin receptor TrkB. The later interaction was confirmed both in cultured cells and prefrontal cortex. mGlu2 activation triggers phosphorylation of TrkB on Tyr816 in primary cortical neurons and prefrontal cortex. Reciprocally, TrkB stimulation enhances mGlu2-operated Gi/o protein activation. Furthermore, TrkB inhibition prevents the rescue of behavioral deficits by glutamatergic antipsychotics in phencyclidine-treated mice. Collectively, these results reveal a cross-talk between TrkB and mGlu2, which is key to the behavioral response to glutamatergic antipsychotics.
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Affiliation(s)
- Clémentine Eva Philibert
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Candice Disdier
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Pierre-André Lafon
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
- Cellular Signaling Laboratory, Key Laboratory of Molecular Biophysics of MOE, International Research Centre for Sensory Biology and Technology of MOST, College of Life Science and Technology, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Alexandre Bouyssou
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Mathieu Oosterlaken
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Sonya Galant
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Anne Pizzoccaro
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Pola Tuduri
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Jeanne Ster
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Jianfeng Liu
- Cellular Signaling Laboratory, Key Laboratory of Molecular Biophysics of MOE, International Research Centre for Sensory Biology and Technology of MOST, College of Life Science and Technology, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Julie Kniazeff
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Jean-Philippe Pin
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Philippe Rondard
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Philippe Marin
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Franck Vandermoere
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
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4
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Lao-Peregrin C, Xiang G, Kim J, Srivastava I, Fall AB, Gerhard DM, Kohtala P, Kim D, Song M, Garcia-Marcos M, Levitz J, Lee FS. Synaptic plasticity via receptor tyrosine kinase/G-protein-coupled receptor crosstalk. Cell Rep 2024; 43:113595. [PMID: 38117654 PMCID: PMC10844890 DOI: 10.1016/j.celrep.2023.113595] [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: 11/09/2022] [Revised: 11/15/2023] [Accepted: 12/01/2023] [Indexed: 12/22/2023] Open
Abstract
Cellular signaling involves a large repertoire of membrane receptors operating in overlapping spatiotemporal regimes and targeting many common intracellular effectors. However, both the molecular mechanisms and the physiological roles of crosstalk between receptors, especially those from different superfamilies, are poorly understood. We find that the receptor tyrosine kinase (RTK) TrkB and the G-protein-coupled receptor (GPCR) metabotropic glutamate receptor 5 (mGluR5) together mediate hippocampal synaptic plasticity in response to brain-derived neurotrophic factor (BDNF). Activated TrkB enhances constitutive mGluR5 activity to initiate a mode switch that drives BDNF-dependent sustained, oscillatory Ca2+ signaling and enhanced MAP kinase activation. This crosstalk is mediated, in part, by synergy between Gβγ, released by TrkB, and Gαq-GTP, released by mGluR5, to enable physiologically relevant RTK/GPCR crosstalk.
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Affiliation(s)
| | - Guoqing Xiang
- Department of Psychiatry, Weill Cornell Medicine. New York, NY 10065, USA; Department of Biochemistry, Weill Cornell Medicine, New York, NY 10065, USA
| | - Jihye Kim
- Department of Psychiatry, Weill Cornell Medicine. New York, NY 10065, USA
| | - Ipsit Srivastava
- Department of Biochemistry, Weill Cornell Medicine, New York, NY 10065, USA
| | - Alexandra B Fall
- Department of Psychiatry, Weill Cornell Medicine. New York, NY 10065, USA
| | - Danielle M Gerhard
- Department of Psychiatry, Weill Cornell Medicine. New York, NY 10065, USA
| | - Piia Kohtala
- Department of Psychiatry, Weill Cornell Medicine. New York, NY 10065, USA
| | - Daegeon Kim
- Department of Life Sciences, Yeongnam University, Gyeongsan, Gyeongbuk 38451, South Korea
| | - Minseok Song
- Department of Life Sciences, Yeongnam University, Gyeongsan, Gyeongbuk 38451, South Korea
| | - Mikel Garcia-Marcos
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
| | - Joshua Levitz
- Department of Psychiatry, Weill Cornell Medicine. New York, NY 10065, USA; Department of Biochemistry, Weill Cornell Medicine, New York, NY 10065, USA.
| | - Francis S Lee
- Department of Psychiatry, Weill Cornell Medicine. New York, NY 10065, USA.
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5
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Wang Y, Liang J, Xu B, Yang J, Wu Z, Cheng L. TrkB/BDNF signaling pathway and its small molecular agonists in CNS injury. Life Sci 2024; 336:122282. [PMID: 38008209 DOI: 10.1016/j.lfs.2023.122282] [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: 02/18/2023] [Revised: 10/19/2023] [Accepted: 11/18/2023] [Indexed: 11/28/2023]
Abstract
As one of the most prevalent neurotrophic factors in the central nervous system (CNS), brain-derived neurotrophic factor (BDNF) plays a significant role in CNS injury by binding to its specific receptor Tropomyosin-related kinase receptor B (TrkB). The BDNF/TrkB signaling pathway is crucial for neuronal survival, structural changes, and plasticity. BDNF acts as an axonal growth and extension factor, a pro-survival factor, and a synaptic modulator in the CNS. BDNF also plays an important role in the maintenance and plasticity of neuronal circuits. Several studies have demonstrated the importance of BDNF in the treatment and recovery of neurodegenerative and neurotraumatic disorders. By undertaking in-depth study on the mechanism of BDNF/TrkB function, important novel therapeutic strategies for treating neuropsychiatric disorders have been discovered. In this review, we discuss the expression patterns and mechanisms of the TrkB/BDNF signaling pathway in CNS damage and introduce several intriguing small molecule TrkB receptor agonists produced over the previous several decades.
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Affiliation(s)
- Yujin Wang
- Division of Spine, Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China; Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, Shanghai 200072, China; Medical School, Tongji University, Shanghai 200433, China
| | - Jing Liang
- Division of Spine, Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China; Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, Shanghai 200072, China; School of Stomatology, Tongji University, Shanghai 200072, China
| | - Boyu Xu
- Division of Spine, Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China; Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, Shanghai 200072, China; Medical School, Tongji University, Shanghai 200433, China
| | - Jin Yang
- Division of Spine, Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China; Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, Shanghai 200072, China; Medical School, Tongji University, Shanghai 200433, China
| | - Zhourui Wu
- Division of Spine, Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China; Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, Shanghai 200072, China.
| | - Liming Cheng
- Division of Spine, Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China; Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, Shanghai 200072, China.
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6
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Kim J, He MJ, Widmann AK, Lee FS. The role of neurotrophic factors in novel, rapid psychiatric treatments. Neuropsychopharmacology 2024; 49:227-245. [PMID: 37673965 PMCID: PMC10700398 DOI: 10.1038/s41386-023-01717-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 07/11/2023] [Accepted: 07/26/2023] [Indexed: 09/08/2023]
Abstract
Neurotrophic factors are a family of growth factors that modulate cellular growth, survival, and differentiation. For many decades, it has been generally believed that a lack of neurotrophic support led to the decreased neuronal synaptic plasticity, death, and loss of non-neuronal supportive cells seen in neuropsychiatric disorders. Traditional psychiatric medications that lead to immediate increases in neurotransmitter levels at the synapse have been shown also to elevate synaptic neurotrophic levels over weeks, correlating with the time course of the therapeutic effects of these drugs. Recent advances in psychiatric treatments, such as ketamine and psychedelics, have shown a much faster onset of therapeutic effects (within minutes to hours). They have also been shown to lead to a rapid release of neurotrophins into the synapse. This has spurred a significant shift in understanding the role of neurotrophins and how the receptor tyrosine kinases that bind neurotrophins may work in concert with other signaling systems. In this review, this renewed understanding of synaptic receptor signaling interactions and the clinical implications of this mechanistic insight will be discussed within the larger context of the well-established roles of neurotrophic factors in psychiatric disorders and treatments.
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Affiliation(s)
- Jihye Kim
- Department of Psychiatry, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Michelle J He
- Department of Psychiatry, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Alina K Widmann
- Department of Psychiatry, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Francis S Lee
- Department of Psychiatry, Weill Cornell Medicine, New York, NY, 10065, USA.
- Department of Pharmacology, Weill Cornell Medicine, New York, NY, 10065, USA.
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7
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Vázquez-Cuevas FG, Reyna-Jeldes M, Velázquez-Miranda E, Coddou C. Transactivation of receptor tyrosine kinases by purinergic P2Y and adenosine receptors. Purinergic Signal 2023; 19:613-621. [PMID: 36529846 PMCID: PMC10754767 DOI: 10.1007/s11302-022-09913-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Transactivation of receptor tyrosine kinases (RTK) is a crosstalk mechanism exhibited by G-protein-coupled receptors (GPCR) to activate signaling pathways classically associated with growth factors. The discovery of RTK transactivation was a breakthrough in signal transduction that contributed to developing current concepts in intracellular signaling. RTK transactivation links GPCR signaling to important cellular processes, such as cell proliferation and differentiation, and explains the functional diversity of these receptors. Purinergic (P2Y and adenosine) receptors belong to class A of GPCR; in the present work, we systematically review the experimental evidence showing that purinergic receptors have the ability to transactivate RTK in multiple tissues and physiopathological conditions resulting in the modulation of cellular physiology. Of particular relevance, the crosstalk between purinergic receptors and epidermal growth factor receptor is a redundant pathway that participates in multiple pathophysiological processes. Specific and detailed knowledge of purinergic receptor-regulated pathways advances our understanding of the complexity of GPCR signal transduction and opens the way for pharmacologic intervention in the pathological context.
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Affiliation(s)
- F G Vázquez-Cuevas
- Departamento de Neurobiología Celular Y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Boulevard Juriquilla # 3001, Juriquilla, Querétaro, 76230, México.
| | - M Reyna-Jeldes
- Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Larrondo 1281, Coquimbo, 1781421, Chile
- Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago, 8331150, Chile
- Núcleo Para El Estudio del Cáncer a Nivel Básico, Aplicado Y Clínico, Universidad Católica del Norte, Larrondo 1281, Coquimbo , 1781421, Chile
| | - E Velázquez-Miranda
- Departamento de Neurobiología Celular Y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Boulevard Juriquilla # 3001, Juriquilla, Querétaro, 76230, México
| | - C Coddou
- Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Larrondo 1281, Coquimbo, 1781421, Chile.
- Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago, 8331150, Chile.
- Núcleo Para El Estudio del Cáncer a Nivel Básico, Aplicado Y Clínico, Universidad Católica del Norte, Larrondo 1281, Coquimbo , 1781421, Chile.
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8
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Lüningschrör P, Andreska T, Veh A, Wolf D, Giridhar NJ, Moradi M, Denzel A, Sendtner M. Calnexin controls TrkB cell surface transport and ER-phagy in mouse cerebral cortex development. Dev Cell 2023; 58:1733-1747.e6. [PMID: 37506696 DOI: 10.1016/j.devcel.2023.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 05/23/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023]
Abstract
Transactivation of Tropomyosin receptor kinase B (TrkB) by EGF leads to cell surface transport of TrkB, promoting its signaling responsiveness to brain-derived neurotrophic factor (BDNF), a critical process for proper cortical plate development. However, the mechanisms that regulate the transport of TrkB to the cell surface are not fully understood. Here, we identified Calnexin as a regulator for targeting TrkB either to the cell surface or toward autophagosomal processing. Calnexin-deficient mouse embryos show impaired cortical plate formation and elevated levels of transactivated TrkB. In Calnexin-depleted mouse neuronal precursor cells, we detected an impaired cell surface transport of TrkB in response to EGF and an impaired delivery to autophagosomes. Mechanistically, we show that Calnexin facilitates the interaction of TrkB with the ER-phagy receptor Fam134b, thereby targeting TrkB to ER-phagy. This mechanism appears as a critical process for fine-tuning the sensitivity of neurons to BDNF.
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Affiliation(s)
- Patrick Lüningschrör
- Institute of Clinical Neurobiology, University Hospital Würzburg, Versbacher Str. 5, 97078 Würzburg, Germany
| | - Thomas Andreska
- Institute of Clinical Neurobiology, University Hospital Würzburg, Versbacher Str. 5, 97078 Würzburg, Germany
| | - Alexander Veh
- Institute of Clinical Neurobiology, University Hospital Würzburg, Versbacher Str. 5, 97078 Würzburg, Germany
| | - Daniel Wolf
- Institute of Clinical Neurobiology, University Hospital Würzburg, Versbacher Str. 5, 97078 Würzburg, Germany
| | - Neha Jadhav Giridhar
- Institute of Clinical Neurobiology, University Hospital Würzburg, Versbacher Str. 5, 97078 Würzburg, Germany
| | - Mehri Moradi
- Institute of Clinical Neurobiology, University Hospital Würzburg, Versbacher Str. 5, 97078 Würzburg, Germany
| | - Angela Denzel
- Imperial Cancer Research Fund now Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Michael Sendtner
- Institute of Clinical Neurobiology, University Hospital Würzburg, Versbacher Str. 5, 97078 Würzburg, Germany.
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9
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Alitalo O, González-Hernández G, Rosenholm M, Kohtala P, Matsui N, Müller HK, Theilmann W, Klein A, Kärkkäinen O, Rozov S, Rantamäki T, Kohtala S. Linking Hypothermia and Altered Metabolism with TrkB Activation. ACS Chem Neurosci 2023; 14:3212-3225. [PMID: 37551888 PMCID: PMC10485900 DOI: 10.1021/acschemneuro.3c00350] [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: 05/20/2023] [Accepted: 07/13/2023] [Indexed: 08/09/2023] Open
Abstract
Many mechanisms have been proposed to explain acute antidepressant drug-induced activation of TrkB neurotrophin receptors, but several questions remain. In a series of pharmacological experiments, we observed that TrkB activation induced by antidepressants and several other drugs correlated with sedation, and most importantly, coinciding hypothermia. Untargeted metabolomics of pharmacologically dissimilar TrkB activating treatments revealed effects on shared bioenergetic targets involved in adenosine triphosphate (ATP) breakdown and synthesis, demonstrating a common perturbation in metabolic activity. Both activation of TrkB signaling and hypothermia were recapitulated by administration of inhibitors of glucose and lipid metabolism, supporting a close relationship between metabolic inhibition and neurotrophic signaling. Drug-induced TrkB phosphorylation was independent of electroencephalography slow-wave activity and remained unaltered in knock-in mice with the brain-derived neurotrophic factor (BDNF) Val66Met allele, which have impaired activity-dependent BDNF release, alluding to an activation mechanism independent from BDNF and neuronal activity. Instead, we demonstrated that the active maintenance of body temperature prevents activation of TrkB and other targets associated with antidepressants, including p70S6 kinase downstream of the mammalian target of rapamycin (mTOR) and glycogen synthase kinase 3β (GSK3β). Increased TrkB, GSK3β, and p70S6K phosphorylation was also observed during recovery sleep following sleep deprivation, when a physiological temperature drop is known to occur. Our results suggest that the changes in bioenergetics and thermoregulation are causally connected to TrkB activation and may act as physiological regulators of signaling processes involved in neuronal plasticity.
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Affiliation(s)
- Okko Alitalo
- Laboratory
of Neurotherapeutics, Drug Research Program, Division of Pharmacology
and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki 00014, Finland
- SleepWell
Research Program, Faculty of Medicine, University
of Helsinki, Helsinki 00014, Finland
| | - Gemma González-Hernández
- Laboratory
of Neurotherapeutics, Drug Research Program, Division of Pharmacology
and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki 00014, Finland
- SleepWell
Research Program, Faculty of Medicine, University
of Helsinki, Helsinki 00014, Finland
| | - Marko Rosenholm
- Laboratory
of Neurotherapeutics, Drug Research Program, Division of Pharmacology
and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki 00014, Finland
- SleepWell
Research Program, Faculty of Medicine, University
of Helsinki, Helsinki 00014, Finland
- Center
for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2200, Denmark
| | - Piia Kohtala
- Laboratory
of Neurotherapeutics, Drug Research Program, Division of Pharmacology
and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki 00014, Finland
- SleepWell
Research Program, Faculty of Medicine, University
of Helsinki, Helsinki 00014, Finland
- Department
of Psychiatry, Weill Cornell Medicine, New York, New York 10021, United States
| | - Nobuaki Matsui
- Faculty
of Pharmacy, Gifu University of Medical
Science, 4-3-3 Nijigaoka,
Kani, Gifu 509-0293, Japan
| | - Heidi Kaastrup Müller
- Translational
Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Aarhus N 8200, Denmark
| | - Wiebke Theilmann
- Laboratory
of Neurotherapeutics, Drug Research Program, Division of Pharmacology
and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki 00014, Finland
| | - Anders Klein
- Novo
Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen DK-2200, Denmark
- Department
of Drug Design & Pharmacology, University
of Copenhagen, Copenhagen DK-2100, Denmark
| | - Olli Kärkkäinen
- School
of Pharmacy, University of Eastern Finland, Kuopio 70210, Finland
- Afekta
Technologies Ltd., Kuopio 70210, Finland
| | - Stanislav Rozov
- Laboratory
of Neurotherapeutics, Drug Research Program, Division of Pharmacology
and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki 00014, Finland
- SleepWell
Research Program, Faculty of Medicine, University
of Helsinki, Helsinki 00014, Finland
| | - Tomi Rantamäki
- Laboratory
of Neurotherapeutics, Drug Research Program, Division of Pharmacology
and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki 00014, Finland
- SleepWell
Research Program, Faculty of Medicine, University
of Helsinki, Helsinki 00014, Finland
| | - Samuel Kohtala
- Laboratory
of Neurotherapeutics, Drug Research Program, Division of Pharmacology
and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki 00014, Finland
- SleepWell
Research Program, Faculty of Medicine, University
of Helsinki, Helsinki 00014, Finland
- Department
of Psychiatry, Weill Cornell Medicine, New York, New York 10021, United States
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10
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Lao-Peregrin C, Xiang G, Kim J, Srivastava I, Fall AB, Gerhard DM, Kohtala P, Kim D, Song M, Garcia-Marcos M, Levitz J, Lee FS. Synaptic plasticity via receptor tyrosine kinase/G protein-coupled receptor crosstalk. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.28.555210. [PMID: 37693535 PMCID: PMC10491144 DOI: 10.1101/2023.08.28.555210] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Cellular signaling involves a large repertoire of membrane receptors operating in overlapping spatiotemporal regimes and targeting many common intracellular effectors. However, both the molecular mechanisms and physiological roles of crosstalk between receptors, especially those from different superfamilies, are poorly understood. We find that the receptor tyrosine kinase (RTK), TrkB, and the G protein-coupled receptor (GPCR), metabotropic glutamate receptor 5 (mGluR5), together mediate a novel form of hippocampal synaptic plasticity in response to brain-derived neurotrophic factor (BDNF). Activated TrkB enhances constitutive mGluR5 activity to initiate a mode-switch that drives BDNF-dependent sustained, oscillatory Ca 2+ signaling and enhanced MAP kinase activation. This crosstalk is mediated, in part, by synergy between Gβγ, released by TrkB, and Gα q -GTP, released by mGluR5, to enable a previously unidentified form of physiologically relevant RTK/GPCR crosstalk.
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11
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Speidell A, Bin Abid N, Yano H. Brain-Derived Neurotrophic Factor Dysregulation as an Essential Pathological Feature in Huntington's Disease: Mechanisms and Potential Therapeutics. Biomedicines 2023; 11:2275. [PMID: 37626771 PMCID: PMC10452871 DOI: 10.3390/biomedicines11082275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is a major neurotrophin whose loss or interruption is well established to have numerous intersections with the pathogenesis of progressive neurological disorders. There is perhaps no greater example of disease pathogenesis resulting from the dysregulation of BDNF signaling than Huntington's disease (HD)-an inherited neurodegenerative disorder characterized by motor, psychiatric, and cognitive impairments associated with basal ganglia dysfunction and the ultimate death of striatal projection neurons. Investigation of the collection of mechanisms leading to BDNF loss in HD highlights this neurotrophin's importance to neuronal viability and calls attention to opportunities for therapeutic interventions. Using electronic database searches of existing and forthcoming research, we constructed a literature review with the overarching goal of exploring the diverse set of molecular events that trigger BDNF dysregulation within HD. We highlighted research that investigated these major mechanisms in preclinical models of HD and connected these studies to those evaluating similar endpoints in human HD subjects. We also included a special focus on the growing body of literature detailing key transcriptomic and epigenetic alterations that affect BDNF abundance in HD. Finally, we offer critical evaluation of proposed neurotrophin-directed therapies and assessed clinical trials seeking to correct BDNF expression in HD individuals.
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Affiliation(s)
- Andrew Speidell
- Department of Neurological Surgery, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (A.S.); (N.B.A.)
| | - Noman Bin Abid
- Department of Neurological Surgery, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (A.S.); (N.B.A.)
| | - Hiroko Yano
- Department of Neurological Surgery, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (A.S.); (N.B.A.)
- Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
- Department of Genetics, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
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12
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Tu X, Jain A, Parra Bueno P, Decker H, Liu X, Yasuda R. Local autocrine plasticity signaling in single dendritic spines by insulin-like growth factors. SCIENCE ADVANCES 2023; 9:eadg0666. [PMID: 37531435 PMCID: PMC10396292 DOI: 10.1126/sciadv.adg0666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 06/29/2023] [Indexed: 08/04/2023]
Abstract
The insulin superfamily of peptides is essential for homeostasis as well as neuronal plasticity, learning, and memory. Here, we show that insulin-like growth factors 1 and 2 (IGF1 and IGF2) are differentially expressed in hippocampal neurons and released in an activity-dependent manner. Using a new fluorescence resonance energy transfer sensor for IGF1 receptor (IGF1R) with two-photon fluorescence lifetime imaging, we find that the release of IGF1 triggers rapid local autocrine IGF1R activation on the same spine and more than several micrometers along the stimulated dendrite, regulating the plasticity of the activated spine in CA1 pyramidal neurons. In CA3 neurons, IGF2, instead of IGF1, is responsible for IGF1R autocrine activation and synaptic plasticity. Thus, our study demonstrates the cell type-specific roles of IGF1 and IGF2 in hippocampal plasticity and a plasticity mechanism mediated by the synthesis and autocrine signaling of IGF peptides in pyramidal neurons.
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Affiliation(s)
- Xun Tu
- Neuronal Signal Transduction Group, Max Planck Florida Institute for Neuroscience, Jupiter, FL, USA
- International Max Planck Research School for Brain and Behavior, Jupiter, FL, USA
- FAU/Max Planck Florida Institute Joint Graduate Program in Integrative Biology and Neuroscience, Florida Atlantic University, Boca Raton, FL, USA
| | - Anant Jain
- Neuronal Signal Transduction Group, Max Planck Florida Institute for Neuroscience, Jupiter, FL, USA
| | - Paula Parra Bueno
- Neuronal Signal Transduction Group, Max Planck Florida Institute for Neuroscience, Jupiter, FL, USA
| | - Helena Decker
- Neuronal Signal Transduction Group, Max Planck Florida Institute for Neuroscience, Jupiter, FL, USA
| | - Xiaodan Liu
- Neuronal Signal Transduction Group, Max Planck Florida Institute for Neuroscience, Jupiter, FL, USA
| | - Ryohei Yasuda
- Neuronal Signal Transduction Group, Max Planck Florida Institute for Neuroscience, Jupiter, FL, USA
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13
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Ateaque S, Merkouris S, Barde YA. Neurotrophin signalling in the human nervous system. Front Mol Neurosci 2023; 16:1225373. [PMID: 37470055 PMCID: PMC10352796 DOI: 10.3389/fnmol.2023.1225373] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 06/20/2023] [Indexed: 07/21/2023] Open
Abstract
This review focuses on neurotrophins and their tyrosine kinase receptors, with an emphasis on their relevance to the function and dysfunction in the human nervous system. It also deals with measurements of BDNF levels and highlights recent findings from our laboratory on TrkB and TrkC signalling in human neurons. These include ligand selectivity and Trk activation by neurotrophins and non-neurotrophin ligands. The ligand-induced down-regulation and re-activation of Trk receptors is also discussed.
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Affiliation(s)
- Sarah Ateaque
- School of Biosciences, Cardiff University, Cardiff, United Kingdom
| | - Spyros Merkouris
- School of Biosciences, Cardiff University, Cardiff, United Kingdom
| | - Yves-Alain Barde
- School of Biosciences, Cardiff University, Cardiff, United Kingdom
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14
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Hu HL, Khatri L, Santacruz M, Church E, Moore C, Huang TT, Chao MV. Confronting the loss of trophic support. Front Mol Neurosci 2023; 16:1179209. [PMID: 37456526 PMCID: PMC10338843 DOI: 10.3389/fnmol.2023.1179209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/23/2023] [Indexed: 07/18/2023] Open
Abstract
Classic experiments with peripheral sympathetic neurons established an absolute dependence upon NGF for survival. A forgotten problem is how these neurons become resistant to deprivation of trophic factors. The question is whether and how neurons can survive in the absence of trophic support. However, the mechanism is not understood how neurons switch their phenotype to lose their dependence on trophic factors, such as NGF and BDNF. Here, we approach the problem by considering the requirements for trophic support of peripheral sympathetic neurons and hippocampal neurons from the central nervous system. We developed cellular assays to assess trophic factor dependency for sympathetic and hippocampal neurons and identified factors that rescue neurons in the absence of trophic support. They include enhanced expression of a subunit of the NGF receptor (Neurotrophin Receptor Homolog, NRH) in sympathetic neurons and an increase of the expression of the glucocorticoid receptor in hippocampal neurons. The results are significant since levels and activity of trophic factors are responsible for many neuropsychiatric conditions. Resistance of neurons to trophic factor deprivation may be relevant to the underlying basis of longevity, as well as an important element in preventing neurodegeneration.
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Affiliation(s)
- Hui-Lan Hu
- Department of Biochemistry and Molecular Pharmacology, New York University Langone School of Medicine, New York, NY, United States
| | - Latika Khatri
- Skirball Institute for Biomolecular Medicine, Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
| | - Marilyn Santacruz
- Department of Neuroscience, Pomona College, Claremont, CA, United States
| | - Emily Church
- Department of Neuroscience, Pomona College, Claremont, CA, United States
| | - Christopher Moore
- Skirball Institute for Biomolecular Medicine, Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
| | - Tony T. Huang
- Department of Biochemistry and Molecular Pharmacology, New York University Langone School of Medicine, New York, NY, United States
| | - Moses V. Chao
- Skirball Institute for Biomolecular Medicine, Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
- Department of Cell Biology, New York Langone Medical Center, New York, NY, United States
- Department of Psychiatry, New York Langone Medical Center, New York, NY, United States
- Department of Neuroscience and Physiology, New York Langone Medical Center, New York, NY, United States
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15
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Rimbert S, Moreira JB, Xapelli S, Lévi S. Role of purines in brain development, from neuronal proliferation to synaptic refinement. Neuropharmacology 2023:109640. [PMID: 37348675 DOI: 10.1016/j.neuropharm.2023.109640] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 06/24/2023]
Abstract
The purinergic system includes P1 and P2 receptors, which are activated by ATP and its metabolites. They are expressed in adult neuronal and glial cells and are crucial in brain function, including neuromodulation and neuronal signaling. As P1 and P2 receptors are expressed throughout embryogenesis and development, purinergic signaling also has an important role in the development of the peripheral and central nervous system. In this review, we present the expression pattern and activity of purinergic receptors and of their signaling pathways during embryonic and postnatal development of the nervous system. In particular, we review the involvement of the purinergic signaling in all the crucial steps of brain development i.e. in neural stem cell proliferation, neuronal differentiation and migration as well as in astrogliogenesis and oligodendrogenesis. Then, we review data showing a crucial role of the ATP and adenosine signaling pathways in the formation of the peripheral neuromuscular junction and of central GABAergic and glutamatergic synapses. Finally, we examine the consequences of deregulation of the purinergic system during development and discuss the therapeutic potential of targeting it at adult stage in diseases with reactivation of the ATP and adenosine pathway.
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Affiliation(s)
- Solen Rimbert
- INSERM UMR-S 1270, Sorbonne Université, Institut du Fer à Moulin, 75005, Paris, France
| | - João B Moreira
- INSERM UMR-S 1270, Sorbonne Université, Institut du Fer à Moulin, 75005, Paris, France; Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Instituto de Medicina Molecular - João Lobo Antunes (iMM - JLA), Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Sara Xapelli
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Instituto de Medicina Molecular - João Lobo Antunes (iMM - JLA), Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Sabine Lévi
- INSERM UMR-S 1270, Sorbonne Université, Institut du Fer à Moulin, 75005, Paris, France.
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16
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Cen XQ, Li P, Wang B, Chen X, Zhao Y, Yang N, Peng Y, Li CH, Ning YL, Zhou YG. Knockdown of adenosine A2A receptors in hippocampal neurons prevents post-TBI fear memory retrieval. Exp Neurol 2023; 364:114378. [PMID: 36907351 DOI: 10.1016/j.expneurol.2023.114378] [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: 12/08/2022] [Revised: 02/27/2023] [Accepted: 03/07/2023] [Indexed: 03/13/2023]
Abstract
The formation of fear memory is crucial in emotional disorders such as PTSD and anxiety. Traumatic brain injury (TBI) can cause emotional disorders with dysregulated fear memory formation; however, their cross-interaction remains unclear and hurdled the treatment against TBI-related emotional disorders. While adenosine A2A receptor(A2AR) contributes to the physiological regulation of fear memory, this study aimed to evaluate the A2AR role and possible mechanisms in post-TBI fear memory formation using a craniocerebral trauma model, genetically modified A2AR mutant mice, and pharmacological A2AR agonist CGS21680 and antagonist ZM241385. Our finding showed (i) TBI enhanced mice freezing levels (fear memory) at seven days post-TBI; (ii) The A2AR agonist CGS21680 enhanced the post-TBI freezing levels; conversely, the A2AR antagonist ZM241385 reduced mice freezing level; further (iii) Genetic knockdown of neuronal A2AR in the hippocampal CA1, CA3, and DG regions reduced post-TBI freezing levels, while A2AR knockout in DG region yielded the most reduction in fear memory; finally, (iv) AAV-CaMKII-Cre virus-mediated DG deletion of A2AR on excitatory neurons led to a significant decreased freezing levels post-TBI. These findings indicate that brain trauma increases fear memory retrieval post-TBI, and A2AR on DG excitatory neurons plays a crucial role in this process. Importantly, inhibition of A2AR attenuates fear memory enhancement, which provides a new strategy to prevent fear memory formation/enhancement after TBI.
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Affiliation(s)
- Xiao-Qing Cen
- The College of Bioengineering, Chongqing University, No.174 Shazheng Street, Shapingba District, Chongqing 400044, China; Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China
| | - Ping Li
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China; Institute of Brain and Intelligence, Army Medical University, Chongqing, China
| | - Bo Wang
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China
| | - Xing Chen
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China
| | - Yan Zhao
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China
| | - Nan Yang
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China
| | - Yan Peng
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China
| | - Chang-Hong Li
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China
| | - Ya-Lei Ning
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China; Institute of Brain and Intelligence, Army Medical University, Chongqing, China.
| | - Yuan-Guo Zhou
- Department of Army Occupational Disease, State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery and Daping Hospital, Army Medical University, Chongqing, China; Institute of Brain and Intelligence, Army Medical University, Chongqing, China.
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17
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Mantilla CB, Ermilov LG, Greising SM, Gransee HM, Zhan WZ, Sieck GC. Electrophysiological effects of BDNF and TrkB signaling at type-identified diaphragm neuromuscular junctions. J Neurophysiol 2023; 129:781-792. [PMID: 36883761 PMCID: PMC10069962 DOI: 10.1152/jn.00015.2023] [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: 01/13/2023] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 03/09/2023] Open
Abstract
Previous studies show that synaptic quantal release decreases during repetitive stimulation, i.e., synaptic depression. Neurotrophin brain-derived neurotrophic factor (BDNF) enhances neuromuscular transmission via activation of tropomyosin-related kinase receptor B (TrkB). We hypothesized that BDNF mitigates synaptic depression at the neuromuscular junction and that the effect is more pronounced at type IIx and/or IIb fibers compared to type I or IIa fibers given the more rapid reduction in docked synaptic vesicles with repetitive stimulation. Rat phrenic nerve-diaphragm muscle preparations were used to determine the effect of BDNF on synaptic quantal release during repetitive stimulation at 50 Hz. An ∼40% decline in quantal release was observed during each 330-ms duration train of nerve stimulation (intratrain synaptic depression), and this intratrain decline was observed across repetitive trains (20 trains at 1/s repeated every 5 min for 30 min for 6 sets). BDNF treatment significantly enhanced quantal release at all fiber types (P < 0.001). BDNF treatment did not change release probability within a stimulation set but enhanced synaptic vesicle replenishment between sets. In agreement, synaptic vesicle cycling (measured using FM4-64 fluorescence uptake) was increased following BDNF [or neurotrophin-4 (NT-4)] treatment (∼40%; P < 0.05). Conversely, inhibiting BDNF/TrkB signaling with the tyrosine kinase inhibitor K252a and TrkB-IgG (which quenches endogenous BDNF or NT-4) decreased FM4-64 uptake (∼34% across fiber types; P < 0.05). The effects of BDNF were generally similar across all fiber types. We conclude that BDNF/TrkB signaling acutely enhances presynaptic quantal release and thereby may serve to mitigate synaptic depression and maintain neuromuscular transmission during repetitive activation.NEW & NOTEWORTHY Neurotrophin brain-derived neurotrophic factor (BDNF) enhances neuromuscular transmission via activation of tropomyosin-related kinase receptor B (TrkB). Rat phrenic nerve-diaphragm muscle preparations were used to determine the rapid effect of BDNF on synaptic quantal release during repetitive stimulation. BDNF treatment significantly enhanced quantal release at all fiber types. BDNF increased synaptic vesicle cycling (measured using FM4-64 fluorescence uptake); conversely, inhibiting BDNF/TrkB signaling decreased FM4-64 uptake.
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Affiliation(s)
- Carlos B Mantilla
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, United States
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, United States
| | - Leonid G Ermilov
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, United States
| | - Sarah M Greising
- School of Kinesiology, University of Minnesota, Minneapolis, Minnesota, United States
| | - Heather M Gransee
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, United States
| | - Wen-Zhi Zhan
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, United States
| | - Gary C Sieck
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, United States
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, United States
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18
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Trouvilliez S, Lagadec C, Toillon RA. TrkA Co-Receptors: The Janus Face of TrkA? Cancers (Basel) 2023; 15:cancers15071943. [PMID: 37046604 PMCID: PMC10093326 DOI: 10.3390/cancers15071943] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/18/2023] [Accepted: 03/21/2023] [Indexed: 04/14/2023] Open
Abstract
Larotrectinib and Entrectinib are specific pan-Trk tyrosine kinase inhibitors (TKIs) approved by the Food and Drug Administration (FDA) in 2018 for cancers with an NTRK fusion. Despite initial enthusiasm for these compounds, the French agency (HAS) recently reported their lack of efficacy. In addition, primary and secondary resistance to these TKIs has been observed in the absence of other mutations in cancers with an NTRK fusion. Furthermore, when TrkA is overexpressed, it promotes ligand-independent activation, bypassing the TKI. All of these clinical and experimental observations show that genetics does not explain all therapeutic failures. It is therefore necessary to explore new hypotheses to explain these failures. This review summarizes the current status of therapeutic strategies with TrkA inhibitors, focusing on the mechanisms potentially involved in these failures and more specifically on the role of TrkA.
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Affiliation(s)
- Sarah Trouvilliez
- Univ. Lille, CNRS, INSERM, CHU Lille, UMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, OncoLille Institute, Bvd. du Professeur Jules Leclercq, F-59000 Lille, France
| | - Chann Lagadec
- Univ. Lille, CNRS, INSERM, CHU Lille, UMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, OncoLille Institute, Bvd. du Professeur Jules Leclercq, F-59000 Lille, France
| | - Robert-Alain Toillon
- Univ. Lille, CNRS, INSERM, CHU Lille, UMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to Therapies, OncoLille Institute, Bvd. du Professeur Jules Leclercq, F-59000 Lille, France
- GdR2082 APPICOM-«Approche Intégrative Pour Une Compréhension Multi-Échelles de la Fonction des Protéines Membranaires», 75016 Paris, France
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19
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Launay A, Nebie O, Vijaya Shankara J, Lebouvier T, Buée L, Faivre E, Blum D. The role of adenosine A 2A receptors in Alzheimer's disease and tauopathies. Neuropharmacology 2023; 226:109379. [PMID: 36572177 DOI: 10.1016/j.neuropharm.2022.109379] [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: 11/13/2022] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Adenosine signals through four distinct G protein-coupled receptors that are located at various synapses, cell types and brain areas. Through them, adenosine regulates neuromodulation, neuronal signaling, learning and cognition as well as the sleep-wake cycle, all strongly impacted in neurogenerative disorders, among which Alzheimer's Disease (AD). AD is a complex form of cognitive deficits characterized by two pathological hallmarks: extracellular deposits of aggregated β-amyloid peptides and intraneuronal fibrillar aggregates of hyper- and abnormally phosphorylated Tau proteins. Both lesions contribute to the early dysfunction and loss of synapses which are strongly associated to the development of cognitive decline in AD patients. The present review focuses on the pathophysiological impact of the A2ARs dysregulation observed in cognitive area from AD patients. We are reviewing not only evidence of the cellular changes in A2AR levels in pathological conditions but also describe what is currently known about their consequences in term of synaptic plasticity, neuro-glial miscommunication and memory abilities. We finally summarize the proof-of-concept studies that support A2AR as credible targets and the clinical interest to repurpose adenosine drugs for the treatment of AD and related disorders. This article is part of the Special Issue on "Purinergic Signaling: 50 years".
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Affiliation(s)
- Agathe Launay
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - Ouada Nebie
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - Jhenkruthi Vijaya Shankara
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - Thibaud Lebouvier
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France; CHU Lille, Memory Clinic, Lille, France
| | - Luc Buée
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - Emilie Faivre
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - David Blum
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France.
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20
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Wang J, Cai Y, Sun J, Feng H, Zhu X, Chen Q, Gao F, Ni Q, Mao L, Yang M, Sun B. Administration of intramuscular AAV-BDNF and intranasal AAV-TrkB promotes neurological recovery via enhancing corticospinal synaptic connections in stroke rats. Exp Neurol 2023; 359:114236. [PMID: 36183811 DOI: 10.1016/j.expneurol.2022.114236] [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: 05/19/2022] [Revised: 09/14/2022] [Accepted: 09/25/2022] [Indexed: 12/30/2022]
Abstract
Stroke causes long-term disability in survivors. BDNF/TrkB plays an important role in synaptic plasticity and synaptic transmission in the central nervous system (CNS), promoting neurological recovery. In this study, we performed non-invasive treatment methods focused on intramuscular injection into stroke-injured forelimb muscles, or intranasal administration using adeno-associated virus (AAV) vectors carrying genes encoding BDNF or TrkB. In a permanent rat middle cerebral artery occlusion (MCAO) model, we assessed the effects of combination therapy with AAV-BDNF and AAV-TrkB on motor functional recovery and synaptic plasticity of the corticospinal connections. Our results showed that BDNF or TrkB gene transduced in the spinal anterior horn neurons and cerebral cortical neurons. Compared to AAV vector treatment alone, behavioral and electrophysiological results showed that the combination therapy significantly improved upper limb motor functional recovery and neurotransmission efficiency after stroke. BDA tracing, immunofluorescence staining, qRT-PCR, and transmission electron microscopy of synaptic ultrastructure results revealed that the combination therapy not only potently increased the expression of Synapsin I, PSD-95, and GAP-43, but also promoted the axonal remodeling and restoration of abnormal synaptic structures. These findings provide a new strategy for enhancing neural plasticity and a potential means to treat stroke clinically.
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Affiliation(s)
- Jing Wang
- Medical College of Qingdao University, Qingdao 266021, Shandong, China; Institute for Neurological Research, The Second Affiliated Hospital; School of Basic Medical Sciences of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China
| | - Yichen Cai
- Institute for Neurological Research, The Second Affiliated Hospital; School of Basic Medical Sciences of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China
| | - Jingyi Sun
- Department of Spinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Hua Feng
- Department of Otolaryngology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, China
| | - Xiaoyu Zhu
- Institute for Neurological Research, The Second Affiliated Hospital; School of Basic Medical Sciences of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China
| | - Qian Chen
- Institute for Neurological Research, The Second Affiliated Hospital; School of Basic Medical Sciences of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China
| | - Feng Gao
- Institute for Neurological Research, The Second Affiliated Hospital; School of Basic Medical Sciences of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China
| | - Qingbin Ni
- Postdoctoral Workstation, Taian Central Hospital, Taian 271000, Shandong, China
| | - Leilei Mao
- Institute for Neurological Research, The Second Affiliated Hospital; School of Basic Medical Sciences of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China.
| | - Mingfeng Yang
- Institute for Neurological Research, The Second Affiliated Hospital; School of Basic Medical Sciences of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China.
| | - Baoliang Sun
- Medical College of Qingdao University, Qingdao 266021, Shandong, China; Institute for Neurological Research, The Second Affiliated Hospital; School of Basic Medical Sciences of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China.
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21
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Li Y, Wei C, Wang W, Li Q, Wang Z. Tropomyosin receptor kinase B (TrkB) signalling: targeted therapy in neurogenic tumours. J Pathol Clin Res 2022; 9:89-99. [PMID: 36533776 PMCID: PMC9896160 DOI: 10.1002/cjp2.307] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/29/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022]
Abstract
Tropomyosin receptor kinase B (TrkB), a transmembrane receptor protein, has been found to play a pivotal role in neural development. This protein is encoded by the neurotrophic receptor tyrosine kinase 2 (NTRK2) gene, and its abnormal activation caused by NTRK2 overexpression or fusion can contribute to tumour initiation, progression, and resistance to therapeutics in multiple types of neurogenic tumours. Targeted therapies for this mechanism have been designed and developed in preclinical and clinical studies, including selective TrkB inhibitors and pan-TRK inhibitors. This review describes the gene structure, biological function, abnormal TrkB activation mechanism, and current-related targeted therapies in neurogenic tumours.
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Affiliation(s)
- Yuehua Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPR China
| | - Chengjiang Wei
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPR China
| | - Wei Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPR China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPR China
| | - Zhi‐Chao Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPR China
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22
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Russo L, Giacomelli C, Fortino M, Marzo T, Ferri G, Calvello M, Viegi A, Magrì A, Pratesi A, Pietropaolo A, Cardarelli F, Martini C, Rizzarelli E, Marchetti L, La Mendola D, Trincavelli ML. Neurotrophic Activity and Its Modulation by Zinc Ion of a Dimeric Peptide Mimicking the Brain-Derived Neurotrophic Factor N-Terminal Region. ACS Chem Neurosci 2022; 13:3453-3463. [PMID: 36346920 PMCID: PMC9732821 DOI: 10.1021/acschemneuro.2c00463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is a neurotrophin (NT) essential for neuronal development and synaptic plasticity. Dysregulation of BDNF signaling is implicated in different neurological disorders. The direct NT administration as therapeutics has revealed to be challenging. This has prompted the design of peptides mimicking different regions of the BDNF structure. Although loops 2 and 4 have been thoroughly investigated, less is known regarding the BDNF N-terminal region, which is involved in the selective recognition of the TrkB receptor. Herein, a dimeric form of the linear peptide encompassing the 1-12 residues of the BDNF N-terminal (d-bdnf) was synthesized. It demonstrated to act as an agonist promoting specific phosphorylation of TrkB and downstream ERK and AKT effectors. The ability to promote TrkB dimerization was investigated by advanced fluorescence microscopy and molecular dynamics (MD) simulations, finding activation modes shared with BDNF. Furthermore, d-bdnf was able to sustain neurite outgrowth and increase the expression of differentiation (NEFM, LAMC1) and polarization markers (MAP2, MAPT) demonstrating its neurotrophic activity. As TrkB activity is affected by zinc ions in the synaptic cleft, we first verified the ability of d-bdnf to coordinate zinc and then the effect of such complexation on its activity. The d-bdnf neurotrophic activity was reduced by zinc complexation, demonstrating the role of the latter in tuning the activity of the new peptido-mimetic. Taken together our data uncover the neurotrophic properties of a novel BDNF mimetic peptide and pave the way for future studies to understand the pharmacological basis of d-bdnf action and develop novel BDNF-based therapeutic strategies.
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Affiliation(s)
- Lara Russo
- Dipartimento
di Farmacia, Università di Pisa, Pisa 56127, Italy
| | | | | | - Tiziano Marzo
- Dipartimento
di Farmacia, Università di Pisa, Pisa 56127, Italy
| | - Gianmarco Ferri
- Laboratorio
NEST, Scuola Normale Superiore, Pisa 56127, Italy
| | | | | | - Antonio Magrì
- Istituto
di Cristallografia, Consiglio Nazionale delle Ricerche (CNR), Catania 95126, Italy
| | - Alessandro Pratesi
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Pisa 56124, Italy
| | | | | | - Claudia Martini
- Dipartimento
di Farmacia, Università di Pisa, Pisa 56127, Italy
| | - Enrico Rizzarelli
- Istituto
di Cristallografia, Consiglio Nazionale delle Ricerche (CNR), Catania 95126, Italy,Università
degli Studi di Catania, Catania 95124, Italy
| | - Laura Marchetti
- Dipartimento
di Farmacia, Università di Pisa, Pisa 56127, Italy,
| | - Diego La Mendola
- Dipartimento
di Farmacia, Università di Pisa, Pisa 56127, Italy,
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23
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Nordvall G, Forsell P, Sandin J. Neurotrophin-targeted therapeutics: A gateway to cognition and more? Drug Discov Today 2022; 27:103318. [PMID: 35850433 DOI: 10.1016/j.drudis.2022.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/05/2022] [Accepted: 07/12/2022] [Indexed: 02/09/2023]
Abstract
Neurotrophins, such as brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF), are small proteins expressed in the brain and peripheral tissues, which regulate several key aspects of neuronal function, including neurogenesis, synaptic plasticity and neuroprotection, but also programmed cell death. This broad range of effects is a result of a complex downstream signaling pathway, with differential spatial and temporal activation patterns further diversifying their physiological effects. Alterations in neurotrophin levels, or known polymorphisms in neurotrophin genes, have been linked to a variety of disorders, including depression and Alzheimer's disease (AD). Historically, their therapeutic potential in these disorders has been hampered by the lack of suitable tool molecules for clinical studies. However, recent advancements have led to the development of new therapeutic candidates, which are now in clinical testing.
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24
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Cai Y, Chen X, Yi B, Li J, Wen Z. Pathophysiology roles for adenosine 2A receptor in obesity and related diseases. Obes Rev 2022; 23:e13490. [PMID: 35796566 DOI: 10.1111/obr.13490] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 06/03/2022] [Accepted: 06/05/2022] [Indexed: 11/30/2022]
Abstract
Obesity, a burgeoning worldwide health system challenge, is associated with several comorbidities, including non-alcoholic fatty liver disease (NAFLD), diabetes, atherosclerosis, and osteoarthritis, leading to serious problems to people's health. Adenosine is a critical extracellular signaling molecule that has essential functions in regulating most organ systems by binding to four G-protein-coupled adenosine receptors, denoted A1 , A2A , A2B , and A3 . Among the receptors, a growing body evidence highlights the key roles of the adenosine 2A receptor (A2A R) in obesity and related diseases. In the current review, we summarize the effects of A2A R in obesity and obesity-associated non-alcoholic fatty liver disease, diabetes, atherosclerosis, and osteoarthritis, to clarify the complicated impacts of A2A R on obesity and related diseases.
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Affiliation(s)
- Yuli Cai
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaolin Chen
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Bo Yi
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Junfeng Li
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhongyuan Wen
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
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25
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Tacke C, DiStefano PS, Lindsay RM, Metzdorf K, Zagrebelsky M, Korte M. Actions of the TrkB Agonist Antibody ZEB85 in Regulating the Architecture and Synaptic Plasticity in Hippocampal Neurons. Front Mol Neurosci 2022; 15:945348. [PMID: 35845610 PMCID: PMC9280622 DOI: 10.3389/fnmol.2022.945348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
Signaling of BDNF via its TrkB receptor is crucial in regulating several critical aspects of the architecture and function of neurons both during development and in the adult central nervous system. Indeed, several neurological conditions, such as neurodevelopmental and neurodegenerative disorders are associated with alterations both in the expression levels of BDNF and TrkB, and in their intracellular signaling. Thus, the possibility of promoting BDNF/TrkB signaling has become relevant as a potential therapeutic intervention for neurological disorders. However, the clinical potential of BDNF itself has been limited due to its restricted diffusion rate in biological tissue, poor bioavailability and pharmacological properties, as well as the potential for unwanted side effects due to its ability to also signal via the p75NTR pathway. Several small molecule and biologic drug candidate TrkB agonists have been developed and are reported to have effects in rescuing both the pathological alterations and disease related symptoms in mouse models of several neurological diseases. However, recent side-by-side comparative studies failed to show their specificity for activating TrkB signaling cascades, suggesting the need for the generation and validation of improved candidates. In the present study, we examine the ability of the novel, fully human TrkB agonist antibody ZEB85 to modulate the architecture, activity and synaptic plasticity of hippocampal murine neurons under physiological conditions. Moreover, we show here that ZEB85 prevents β-amyloid toxicity in cultured hippocampal neurons, in a manner which is comparable to BDNF.
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Affiliation(s)
- Charlotte Tacke
- Division of Cellular Neurobiology, Zoological Institute, Technical University of Braunschweig, Braunschweig, Germany
- *Correspondence: Charlotte Tacke,
| | | | | | - Kristin Metzdorf
- Division of Cellular Neurobiology, Zoological Institute, Technical University of Braunschweig, Braunschweig, Germany
- Helmholtz Centre for Infection Research, Research Group Neuroinflammation and Neurodegeneration (AG NIND), Braunschweig, Germany
| | - Marta Zagrebelsky
- Division of Cellular Neurobiology, Zoological Institute, Technical University of Braunschweig, Braunschweig, Germany
- Marta Zagrebelsky,
| | - Martin Korte
- Division of Cellular Neurobiology, Zoological Institute, Technical University of Braunschweig, Braunschweig, Germany
- Helmholtz Centre for Infection Research, Research Group Neuroinflammation and Neurodegeneration (AG NIND), Braunschweig, Germany
- Martin Korte,
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26
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Analysis of the Expression of Neurotrophins and Their Receptors in Adult Zebrafish Kidney. Vet Sci 2022; 9:vetsci9060296. [PMID: 35737348 PMCID: PMC9227799 DOI: 10.3390/vetsci9060296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/07/2022] [Accepted: 06/12/2022] [Indexed: 11/25/2022] Open
Abstract
Neurotrophins and their receptors are involved in the development and maintenance of neuronal populations. Different reports have shown that all neurotrophin/receptor pathways can also play a role in several non-neuronal tissues in vertebrates, including the kidney. These signaling pathways are involved in different events to ensure the correct functioning of the kidney, such as growth, differentiation, and regulation of renal tubule transport. Previous studies in some fish species have identified the neurotrophins and receptors in the kidney. In this study, for the first time, we compare the expression profiles (mRNA and protein) of all neurotrophin/receptor pathways in the kidney of the adult zebrafish. We quantify the levels of mRNA by using qPCR and identify the expression pattern of each neurotrophin/receptor pathway by in situ hybridization. Next, we detect the proteins using Western blotting and immunohistochemistry. Our results show that among all neurotrophins analyzed, NT-3/TrkC is the most expressed in the glomerule and tubule and in the hematopoietic cells, similar to what has been reported in the mammalian kidney.
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27
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Mitre M, Saadipour K, Williams K, Khatri L, Froemke RC, Chao MV. Transactivation of TrkB Receptors by Oxytocin and Its G Protein-Coupled Receptor. Front Mol Neurosci 2022; 15:891537. [PMID: 35721318 PMCID: PMC9201241 DOI: 10.3389/fnmol.2022.891537] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/11/2022] [Indexed: 12/28/2022] Open
Abstract
Brain-derived Neurotrophic Factor (BDNF) binds to the TrkB tyrosine kinase receptor, which dictates the sensitivity of neurons to BDNF. A unique feature of TrkB is the ability to be activated by small molecules in a process called transactivation. Here we report that the brain neuropeptide oxytocin increases BDNF TrkB activity in primary cortical neurons and in the mammalian neocortex during postnatal development. Oxytocin produces its effects through a G protein-coupled receptor (GPCR), however, the receptor signaling events that account for its actions have not been fully defined. We find oxytocin rapidly transactivates TrkB receptors in bath application of acute brain slices of 2-week-old mice and in primary cortical culture by increasing TrkB receptor tyrosine phosphorylation. The effects of oxytocin signaling could be distinguished from the related vasopressin receptor. The transactivation of TrkB receptors by oxytocin enhances the clustering of gephyrin, a scaffold protein responsible to coordinate inhibitory responses. Because oxytocin displays pro-social functions in maternal care, cognition, and social attachment, it is currently a focus of therapeutic strategies in autism spectrum disorders. Interestingly, oxytocin and BDNF are both implicated in the pathophysiology of depression, schizophrenia, anxiety, and cognition. These results imply that oxytocin may rely upon crosstalk with BDNF signaling to facilitate its actions through receptor transactivation.
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Affiliation(s)
- Mariela Mitre
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
- Departments of Cell Biology, Psychiatry, New York University Langone Medical Center, New York, NY, United States
- Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY, United States
- Department of Otolaryngology, New York University Langone Medical Center, New York, NY, United States
- Center for Neural Science, New York University, New York, NY, United States
| | - Khalil Saadipour
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
| | - Kevin Williams
- Departments of Biology and Psychology, University of Georgia, Athens, GA, United States
| | - Latika Khatri
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
| | - Robert C. Froemke
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
- Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY, United States
- Department of Otolaryngology, New York University Langone Medical Center, New York, NY, United States
- Center for Neural Science, New York University, New York, NY, United States
| | - Moses V. Chao
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
- Departments of Cell Biology, Psychiatry, New York University Langone Medical Center, New York, NY, United States
- Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY, United States
- Center for Neural Science, New York University, New York, NY, United States
- *Correspondence: Moses V. Chao
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28
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Pleiotropic effects of BDNF on the cerebellum and hippocampus: Implications for neurodevelopmental disorders. Neurobiol Dis 2022; 163:105606. [PMID: 34974125 DOI: 10.1016/j.nbd.2021.105606] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/22/2021] [Accepted: 12/29/2021] [Indexed: 12/17/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is one of the most studied neurotrophins in the mammalian brain, essential not only to the development of the central nervous system but also to synaptic plasticity. BDNF is present in various brain areas, but highest levels of expression are seen in the cerebellum and hippocampus. After birth, BDNF acts in the cerebellum as a mitogenic and chemotactic factor, stimulating the cerebellar granule cell precursors to proliferate, migrate and maturate, while in the hippocampus BDNF plays a fundamental role in synaptic transmission and plasticity, representing a key regulator for the long-term potentiation, learning and memory. Furthermore, the expression of BDNF is highly regulated and changes of its expression are associated with both physiological and pathological conditions. The purpose of this review is to provide an overview of the current state of knowledge on the BDNF biology and its neurotrophic role in the proper development and functioning of neurons and synapses in two important brain areas of postnatal neurogenesis, the cerebellum and hippocampus. Dysregulation of BDNF expression and signaling, resulting in alterations in neuronal maturation and plasticity in both systems, is a common hallmark of several neurodevelopmental diseases, such as autism spectrum disorder, suggesting that neuronal malfunction present in these disorders is the result of excessive or reduced of BDNF support. We believe that the more the relevance of the pathophysiological actions of BDNF, and its downstream signals, in early postnatal development will be highlighted, the more likely it is that new neuroprotective therapeutic strategies will be identified in the treatment of various neurodevelopmental disorders.
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29
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Mitchell GS, Baker TL. Respiratory neuroplasticity: Mechanisms and translational implications of phrenic motor plasticity. HANDBOOK OF CLINICAL NEUROLOGY 2022; 188:409-432. [PMID: 35965036 DOI: 10.1016/b978-0-323-91534-2.00016-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Widespread appreciation that neuroplasticity is an essential feature of the neural system controlling breathing has emerged only in recent years. In this chapter, we focus on respiratory motor plasticity, with emphasis on the phrenic motor system. First, we define related but distinct concepts: neuromodulation and neuroplasticity. We then focus on mechanisms underlying two well-studied models of phrenic motor plasticity: (1) phrenic long-term facilitation following brief exposure to acute intermittent hypoxia; and (2) phrenic motor facilitation after prolonged or recurrent bouts of diminished respiratory neural activity. Advances in our understanding of these novel and important forms of plasticity have been rapid and have already inspired translation in multiple respects: (1) development of novel therapeutic strategies to preserve/restore breathing function in humans with severe neurological disorders, such as spinal cord injury and amyotrophic lateral sclerosis; and (2) the discovery that similar plasticity also occurs in nonrespiratory motor systems. Indeed, the realization that similar plasticity occurs in respiratory and nonrespiratory motor neurons inspired clinical trials to restore leg/walking and hand/arm function in people living with chronic, incomplete spinal cord injury. Similar application may be possible to other clinical disorders that compromise respiratory and non-respiratory movements.
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Affiliation(s)
- Gordon S Mitchell
- Breathing Research and Therapeutics Center, Department of Physical Therapy and McKnight Brain Institute, University of Florida, Gainesville, FL, United States.
| | - Tracy L Baker
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, United States
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30
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Mossa A, Cammisotto PG, Velasquez-Flores M, Campeau L. Adaptation to partial urethral obstruction in healthy aging LOU rats and the role of nerve growth factor signaling pathway in the bladder. Exp Gerontol 2021; 157:111625. [PMID: 34780930 DOI: 10.1016/j.exger.2021.111625] [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: 06/14/2021] [Revised: 10/14/2021] [Accepted: 11/07/2021] [Indexed: 11/04/2022]
Abstract
AIM Aging is associated with poor ability to adapt to stress and abnormal nerve growth factor (NGF) profile. Lower urinary tract symptoms frequently disturb the quality of life of the aging population with no optimal treatment for both genders. The aim of the study was to compare the bladder response to bladder outflow obstruction in young and old LOU rats, a model of healthy aging that does not develop insulin resistance, and its relation to proNGF/NGF imbalance. METHODS 6- and 36-month-old female LOU rats were subjected to partial bladder urethral obstruction (PUO) for 2 weeks. Morphometric parameters (body and bladder weight) and glycemia were evaluated. Cystometry was carried out to measure functional parameters followed by ex vivo assessment of muscle strip contractile characteristics. Tissue proteins were examined by immunoblotting and morphology was examined by microscopy. RESULTS Body weight and glycaemia were not affected by surgery. PUO increases significantly bladder weight with increased thickness and fibrosis of the bladder wall as revealed by histological examination in both age groups. Cystometry showed that old PUO rats had a significant reduction in the intercontraction interval and the bladder capacity, a pattern opposite to young rats with PUO. Contractile properties of bladder strip were not affected by age or PUO. On the molecular level, the old rats had lower abundance of the mature NGF relative to proNGF, with signs of p75NTR activation suggested by the higher expression of TNF-α and JNK phosphorylation in the bladder tissue. CONCLUSION Bladder adaptation to PUO occurs only in young LOU rats to maintain efficient bladder contractility. Old LOU rats display proNGF/NGF imbalance and the associated p75NTR activation. This can further induce tissue damage and degeneration through activation of JNK pathway and release of TNF-α which in turn interferes with the necessary bladder adaptation.
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Affiliation(s)
- Abubakr Mossa
- Lady Davis Institute, McGill University, Montreal, Quebec, Canada
| | | | | | - Lysanne Campeau
- Lady Davis Institute, McGill University, Montreal, Quebec, Canada; Division of Urology, Department of Surgery, McGill University, Montreal, Quebec, Canada.
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31
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Yang L, Chen C, Lv B, Gao Y, Li G. Epoxyeicosatrienoic acids prevent cardiomyocytes against sepsis by A 2AR-induced activation of PI3K and PPARγ. Prostaglandins Other Lipid Mediat 2021; 157:106595. [PMID: 34597782 DOI: 10.1016/j.prostaglandins.2021.106595] [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: 03/30/2021] [Revised: 08/14/2021] [Accepted: 09/24/2021] [Indexed: 10/20/2022]
Abstract
Although epoxyeicosatrienoic acids (EETs) have multiple protective effects against different diseases, whether they can improve the pathogenesis of lipopolysaccharide (LPS)-induced septic cardiac dysfunction remains unknown. We investigated the effects of EETs on the LPS-induced inflammatory response in myocardial dysfunction mice and H9c2 cardiac myocytes. Cardiac-specific CYP2J2 transgenic mice (Tr) showed improved cardiac function and reduced inflammation response after administration with LPS, while the protective effects were not observed in A2A adenosine receptor (A2AR/ADORA2A)-deficient mice (knockout/KO). In vitro, EETs prevented LPS-induced inflammation and apoptosis in the cardiomyocytes via A2AR activation. Moreover, ZM241385 (A2AR inhibitor) attenuated the cardioprotective properties of EETs. Further investigation demonstrated that A2AR signal pathway activation partly regulated phosphatidylinositol 3-kinase (PI3K) and peroxisome proliferator-activated receptor-γ (PPARγ) expression. This is the first report on EETs exerting cardioprotective effects against LPS-induced cardiomyocyte injury via A2AR activation.
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Affiliation(s)
- Lei Yang
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, the Second Hospital of Tianjin Medical University, Tianjin, People's Republic of China
| | - Chen Chen
- Departments of Internal Medicine and Gene Therapy Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Bingya Lv
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, the Second Hospital of Tianjin Medical University, Tianjin, People's Republic of China
| | - Yi Gao
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, the Second Hospital of Tianjin Medical University, Tianjin, People's Republic of China
| | - Guangping Li
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, the Second Hospital of Tianjin Medical University, Tianjin, People's Republic of China.
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Ribeiro FF, Ferreira F, Rodrigues RS, Soares R, Pedro DM, Duarte-Samartinho M, Aroeira RI, Ferreiro E, Valero J, Solá S, Mira H, Sebastião AM, Xapelli S. Regulation of hippocampal postnatal and adult neurogenesis by adenosine A 2A receptor: Interaction with brain-derived neurotrophic factor. Stem Cells 2021; 39:1362-1381. [PMID: 34043863 DOI: 10.1002/stem.3421] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/06/2021] [Accepted: 05/06/2021] [Indexed: 06/12/2023]
Abstract
Adenosine A2A receptor (A2A R) activation modulates several brain processes, ranging from neuronal maturation to synaptic plasticity. Most of these actions occur through the modulation of the actions of the neurotrophin brain-derived neurotrophic factor (BDNF). In this work, we studied the role of A2A Rs in regulating postnatal and adult neurogenesis in the rat hippocampal dentate gyrus (DG). Here, we show that A2A R activation with CGS 21680 promoted neural stem cell self-renewal, protected committed neuronal cells from cell death and contributed to a higher density of immature and mature neuronal cells, particularly glutamatergic neurons. Moreover, A2A R endogenous activation was found to be essential for BDNF-mediated increase in cell proliferation and neuronal differentiation. Our findings contribute to further understand the role of adenosinergic signaling in the brain and may have an impact in the development of strategies for brain repair under pathological conditions.
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Affiliation(s)
- Filipa F Ribeiro
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Filipa Ferreira
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Rui S Rodrigues
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Rita Soares
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- iMed.ULisboa, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Diogo M Pedro
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Marta Duarte-Samartinho
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Rita I Aroeira
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Elisabete Ferreiro
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Jorge Valero
- Laboratory of Glial Cell Biology, Achucarro Basque Center for Neuroscience, Leioa, Spain
- Ikerbasque Foundation, Bilbao, Spain
- University of the Basque Country EHU/UPV, Leioa, Spain
| | - Susana Solá
- iMed.ULisboa, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Helena Mira
- Instituto de Salud Carlos III (ISCIII), Majadahonda, Madrid, Spain
- Instituto de Biomedicina de Valencia (IBV-CSIC), Valencia, Spain
| | - Ana M Sebastião
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Sara Xapelli
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes (iMM, JLB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
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Association Between Adenosine A 2A Receptors and Connexin 43 Regulates Hemichannels Activity and ATP Release in Astrocytes Exposed to Amyloid-β Peptides. Mol Neurobiol 2021; 58:6232-6248. [PMID: 34476674 DOI: 10.1007/s12035-021-02538-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 08/17/2021] [Indexed: 12/31/2022]
Abstract
Increasing evidence implicates astrocytes and the associated purinergic modulation in Alzheimer's disease (AD), characterized by cognitive deficits involving the extracellular amyloid-β peptides (Aβ) accumulation. Aβ can affect astrocytic gliotransmitters release, namely ATP, which is rapidly metabolized into adenosine by ecto-5'-nucleotidase, CD73, resulting in adenosine A2A receptors (A2AR) activation that bolsters neurodegeneration. AD's brains exhibit an upregulation of A2AR and of connexin 43 (Cx43), which in astrocytes forms hemichannels that can mediate ATP release. However, a coupling between astrocytic A2AR and Cx43 remains to be established. This was now investigated using astrocytic primary cultures exposed to Aβ1-42 peptides. Aβ triggered ATP release through Cx43 hemichannels, a process blocked by A2AR antagonists and mimicked by selective A2AR activation. A2AR directly regulated hemichannels activity and prevented Cx43 upregulation and phosphorylation observed in Aβ1-42-exposed astrocytes. Moreover, a proximity ligand assay revealed a physical association between astrocytic A2AR and Cx43. Finally, the blockade of CD73-mediated extracellular formation of ATP-derived adenosine prevented the Aβ-induced increase of Cx43 hemichannel activity and of ATP release. Overall, the data identify a feed-forward loop involving astrocytic A2AR and Cx43 hemichannels, whereby A2AR increase Cx43 hemichannel activity leading to increased ATP release, which is converted into adenosine by CD73, sustaining the increased astrocytic A2AR activity in AD-like conditions.
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Agarwal P, Agarwal R. Tackling retinal ganglion cell apoptosis in glaucoma: role of adenosine receptors. Expert Opin Ther Targets 2021; 25:585-596. [PMID: 34402357 DOI: 10.1080/14728222.2021.1969362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION The role of adenosine receptors as therapeutic targets for neuroprotection is now widely recognized. Their role, however, in protection against retinal ganglion cell (RGC) apoptosis in glaucoma needs further investigation. Hence, in this review, we look into the possibility of adenosine receptors as potential therapeutic targets by exploring their role in modulating various pathophysiological mechanisms underlying glaucomatous RGC loss. AREAS COVERED This review presents a summary of the adenosine receptor distribution in retina and the cellular functions mediated by them. The major pathophysiological mechanisms such as excitotoxicity, vascular dysregulation, loss of neurotrophic signaling, and inflammatory responses involved in glaucomatous RGC loss are discussed. The literature showing the role of adenosine receptors in modulating these pathophysiological mechanisms is discussed. The literature search was conducted using Pubmed search engine using key words such as 'RGC apoptosis,' 'adenosine,' adenosine receptors' 'retina' 'excitotoxicity,' 'neurotrophins,' 'ischemia', and 'cytokines' individually and in various combinations. EXPERT OPINION Use of adenosine receptor agonists and antagonists, for preservation of the RGCs in glaucomatous eyes independent of the level of intraocular pressure seems a very useful strategy. Future application of this strategy would require appropriate designing of drug formulation for tissue and disease-specific receptor targeting. Furthermore, the modulation of physiological functions and potential adverse effects need further investigations.
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Affiliation(s)
- Puneet Agarwal
- School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Renu Agarwal
- School of Medicine, International Medical University, Kuala Lumpur, Malaysia
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Colombo E, Triolo D, Bassani C, Bedogni F, Di Dario M, Dina G, Fredrickx E, Fermo I, Martinelli V, Newcombe J, Taveggia C, Quattrini A, Comi G, Farina C. Dysregulated copper transport in multiple sclerosis may cause demyelination via astrocytes. Proc Natl Acad Sci U S A 2021; 118:e2025804118. [PMID: 34183414 PMCID: PMC8271600 DOI: 10.1073/pnas.2025804118] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Demyelination is a key pathogenic feature of multiple sclerosis (MS). Here, we evaluated the astrocyte contribution to myelin loss and focused on the neurotrophin receptor TrkB, whose up-regulation on the astrocyte finely demarcated chronic demyelinated areas in MS and was paralleled by neurotrophin loss. Mice lacking astrocyte TrkB were resistant to demyelination induced by autoimmune or toxic insults, demonstrating that TrkB signaling in astrocytes fostered oligodendrocyte damage. In vitro and ex vivo approaches highlighted that astrocyte TrkB supported scar formation and glia proliferation even in the absence of neurotrophin binding, indicating TrkB transactivation in response to inflammatory or toxic mediators. Notably, our neuropathological studies demonstrated copper dysregulation in MS and model lesions and TrkB-dependent expression of copper transporter (CTR1) on glia cells during neuroinflammation. In vitro experiments evidenced that TrkB was critical for the generation of glial intracellular calcium flux and CTR1 up-regulation induced by stimuli distinct from neurotrophins. These events led to copper uptake and release by the astrocyte, and in turn resulted in oligodendrocyte loss. Collectively, these data demonstrate a pathogenic demyelination mechanism via the astrocyte release of copper and open up the possibility of restoring copper homeostasis in the white matter as a therapeutic target in MS.
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Affiliation(s)
- Emanuela Colombo
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Daniela Triolo
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Claudia Bassani
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Francesco Bedogni
- San Raffaele Rett Research Centre, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Marco Di Dario
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Giorgia Dina
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Evelien Fredrickx
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Isabella Fermo
- Division of Immunology, Transplantation, and Infectious Diseases, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Vittorio Martinelli
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Jia Newcombe
- NeuroResource, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, WC1N 1PJ, London, UK
| | - Carla Taveggia
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Angelo Quattrini
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Giancarlo Comi
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Cinthia Farina
- Division of Neuroscience, Institute of Experimental Neurology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, 20132, Milan, Italy;
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Alçada-Morais S, Gonçalves N, Moreno-Juan V, Andres B, Ferreira S, Marques JM, Magalhães J, Rocha JMM, Xu X, Partidário M, Cunha RA, López-Bendito G, Rodrigues RJ. Adenosine A2A Receptors Contribute to the Radial Migration of Cortical Projection Neurons through the Regulation of Neuronal Polarization and Axon Formation. Cereb Cortex 2021; 31:5652-5663. [PMID: 34184030 DOI: 10.1093/cercor/bhab188] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 01/02/2023] Open
Abstract
Cortical interneurons born in the subpallium reach the cortex through tangential migration, whereas pyramidal cells reach their final position by radial migration. Purinergic signaling via P2Y1 receptors controls the migration of intermediate precursor cells from the ventricular zone to the subventricular zone. It was also reported that the blockade of A2A receptors (A2AR) controls the tangential migration of somatostatin+ interneurons. Here we found that A2AR control radial migration of cortical projection neurons. In A2AR-knockout (KO) mouse embryos or naïve mouse embryos exposed to an A2AR antagonist, we observed an accumulation of early-born migrating neurons in the lower intermediate zone at late embryogenesis. In utero knockdown of A2AR also caused an accumulation of neurons at the lower intermediate zone before birth. This entails the presently identified ability of A2AR to promote multipolar-bipolar transition and axon formation, critical for the transition of migrating neurons from the intermediate zone to the cortical plate. This effect seems to require extracellular ATP-derived adenosine since a similar accumulation of neurons at the lower intermediate zone was observed in mice lacking ecto-5'-nucleotidase (CD73-KO). These findings frame adenosine as a fine-tune regulator of the wiring of cortical inhibitory and excitatory networks.
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Affiliation(s)
- Sofia Alçada-Morais
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.,Institute for Interdisciplinary Research, University of Coimbra, Coimbra 3030-789, Portugal
| | - Nélio Gonçalves
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal
| | | | - Belén Andres
- Instituto de Neurociencias, CSIC-UMH, San Juan de Alicante 03550, Spain
| | - Sofia Ferreira
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.,Institute for Interdisciplinary Research, University of Coimbra, Coimbra 3030-789, Portugal
| | - Joana M Marques
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal
| | - Joana Magalhães
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal
| | - João M M Rocha
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal
| | - Xinli Xu
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.,Institute for Interdisciplinary Research, University of Coimbra, Coimbra 3030-789, Portugal
| | - Matilde Partidário
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal
| | - Rodrigo A Cunha
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra 3004-504, Portugal
| | | | - Ricardo J Rodrigues
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.,Institute for Interdisciplinary Research, University of Coimbra, Coimbra 3030-789, Portugal
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Engeln M, Song Y, Chandra R, La A, Fox ME, Evans B, Turner MD, Thomas S, Francis TC, Hertzano R, Lobo MK. Individual differences in stereotypy and neuron subtype translatome with TrkB deletion. Mol Psychiatry 2021; 26:1846-1859. [PMID: 32366954 PMCID: PMC8480032 DOI: 10.1038/s41380-020-0746-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 04/09/2020] [Accepted: 04/20/2020] [Indexed: 12/16/2022]
Abstract
Motor stereotypies occurring in early-onset neuropsychiatric diseases are associated with dysregulated basal ganglia direct-pathway activity. Disruptions in network connectivity through impaired neuronal structure have been implicated in both rodents and humans. However, the neurobiological mechanisms leading to direct-pathway neuron disconnectivity in stereotypy remain poorly understood. We have a mouse line with Tropomyosin receptor kinase B (TrkB) receptor deletion from D1-expressing cells (D1-Cre-flTrkB) in which a subset of animals shows repetitive rotations and head tics with juvenile onset. Here we demonstrate these behaviors may be associated with abnormal direct-pathway activity by reducing rotations using chemogenetic inhibition of dorsal striatum D1-medium spiny neurons (D1-MSNs) in both juvenile and young-adult mice. Taking advantage of phenotypical differences in animals with similar genotypes, we then interrogated the D1-MSN specific translatome associated with repetitive behavior by using RNA sequencing of ribosome-associated mRNA. Detailed translatome analysis followed by multiplexed gene expression assessment revealed profound alterations in neuronal projection and synaptic structure related genes in stereotypy mice. Examination of neuronal morphology demonstrated dendritic atrophy and dendritic spine loss in dorsal striatum D1-MSNs from mice with repetitive behavior. Together, our results uncover phenotype-specific molecular alterations in D1-MSNs that relate to morphological adaptations in mice displaying stereotypy behavior.
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Affiliation(s)
- Michel Engeln
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Yang Song
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Ramesh Chandra
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Ashley La
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Megan E. Fox
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Brianna Evans
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Makeda D. Turner
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Shavin Thomas
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - T. Chase Francis
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Ronna Hertzano
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA., Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA., Department of Otorhinolaryngology Head and Neck Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Mary Kay Lobo
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA.
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Fioravanti G, Hua PQ, Tomlinson RE. The TrkA agonist gambogic amide augments skeletal adaptation to mechanical loading. Bone 2021; 147:115908. [PMID: 33713848 PMCID: PMC8097708 DOI: 10.1016/j.bone.2021.115908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 10/21/2022]
Abstract
The periosteal and endosteal surfaces of mature bone are densely innervated by sensory nerves expressing TrkA, the high-affinity receptor for nerve growth factor (NGF). In previous work, we demonstrated that administration of exogenous NGF significantly increased load-induced bone formation through the activation of Wnt signaling. However, the translational potential of NGF is limited by the induction of substantial mechanical and thermal hyperalgesia in mice and humans. Here, we tested the effect of gambogic amide (GA), a recently identified robust small molecule agonist for TrkA, on hyperalgesia and load-induced bone formation. Behavioral analysis was used to assess pain up to one week after axial forelimb compression. Contrary to our expectations, GA treatment was not associated with diminished use of the loaded forelimb or sensitivity to thermal stimulus. Furthermore, dynamic histomorphometry revealed a significant increase in relative periosteal bone formation rate as compared to vehicle treatment. Additionally, we found that GA treatment was associated with an increase in the number of osteoblasts per bone surface in loaded limbs as well as a significant increase in the fold change of Ngf, Wnt7b, and Axin2 mRNA expression as compared to vehicle (control). To test the effect of GA on osteoblasts directly, we cultured MC3T3-E1 cells for up to 21 days in osteogenic differentiation media containing NGF, GA, or vehicle (control). Media containing GA induced the significant upregulation of the osteoblastic differentiation markers Runx2, Bglap2, and Sp7 in a dose-dependent manner, whereas treatment with NGF was not associated with any significant increases in these markers. Furthermore, consistent with our in vivo findings, we observed that administration of 50 nM of GA upregulated expression of Ngf at both Day 3 and Day 7. However, cells treated with the highest dose of GA (500 nM) had significantly increased apoptosis and impaired cell proliferation. In conclusion, our study indicates GA may be useful for augmenting skeletal adaptation to mechanical forces without inducing hyperalgesia.
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Affiliation(s)
- Gabriella Fioravanti
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, United States of America
| | - Phuong Q Hua
- Department of Biomedical Engineering, Drexel University, Philadelphia, PA, United States of America
| | - Ryan E Tomlinson
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, United States of America.
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Chou SM, Li KX, Huang MY, Chen C, Lin King YH, Li GG, Zhou W, Teo CF, Jan YN, Jan LY, Yang SB. Kv1.1 channels regulate early postnatal neurogenesis in mouse hippocampus via the TrkB signaling pathway. eLife 2021; 10:e58779. [PMID: 34018923 PMCID: PMC8208815 DOI: 10.7554/elife.58779] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 05/20/2021] [Indexed: 12/20/2022] Open
Abstract
In the postnatal brain, neurogenesis occurs only within a few regions, such as the hippocampal sub-granular zone (SGZ). Postnatal neurogenesis is tightly regulated by factors that balance stem cell renewal with differentiation, and it gives rise to neurons that participate in learning and memory formation. The Kv1.1 channel, a voltage-gated potassium channel, was previously shown to suppress postnatal neurogenesis in the SGZ in a cell-autonomous manner. In this study, we have clarified the physiological and molecular mechanisms underlying Kv1.1-dependent postnatal neurogenesis. First, we discovered that the membrane potential of neural progenitor cells is highly dynamic during development. We further established a multinomial logistic regression model for cell-type classification based on the biophysical characteristics and corresponding cell markers. We found that the loss of Kv1.1 channel activity causes significant depolarization of type 2b neural progenitor cells. This depolarization is associated with increased tropomyosin receptor kinase B (TrkB) signaling and proliferation of neural progenitor cells; suppressing TrkB signaling reduces the extent of postnatal neurogenesis. Thus, our study defines the role of the Kv1.1 potassium channel in regulating the proliferation of postnatal neural progenitor cells in mouse hippocampus.
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Affiliation(s)
- Shu-Min Chou
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
| | - Ke-Xin Li
- Howard Hughes Medical Institute, Departments of Physiology, Biochemistry and Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | | | - Chao Chen
- Howard Hughes Medical Institute, Departments of Physiology, Biochemistry and Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Yuan-Hung Lin King
- Howard Hughes Medical Institute, Departments of Physiology, Biochemistry and Biophysics, University of California, San FranciscoSan FranciscoUnited States
- Neuroscience Graduate Program, University of California, San FranciscoSan FranciscoUnited States
| | | | - Wei Zhou
- Department of Anesthesia and Perioperative Care, University of California, San FranciscoSan FranciscoUnited States
| | - Chin Fen Teo
- Howard Hughes Medical Institute, Departments of Physiology, Biochemistry and Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Yuh Nung Jan
- Howard Hughes Medical Institute, Departments of Physiology, Biochemistry and Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Lily Yeh Jan
- Howard Hughes Medical Institute, Departments of Physiology, Biochemistry and Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Shi-Bing Yang
- Institute of Biomedical Sciences, Academia SinicaTaipeiTaiwan
- Neuroscience Program of Academia Sinica, Academia SinicaTaipeiTaiwan
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40
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Zainullina LF, Vakhitova YV, Lusta AY, Gudasheva TA, Seredenin SB. Dimeric mimetic of BDNF loop 4 promotes survival of serum-deprived cell through TrkB-dependent apoptosis suppression. Sci Rep 2021; 11:7781. [PMID: 33833366 PMCID: PMC8032782 DOI: 10.1038/s41598-021-87435-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 03/30/2021] [Indexed: 01/09/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is involved in the regulation of neuronal cell growth, differentiation, neuroprotection and synaptic plasticity. Although aberrant BDNF/TrkB signaling is implicated in several neurological, neurodegenerative and psychiatric disorders, neurotrophin-based therapy is challenging and is limited by improper pharmacokinetic properties of BDNF. Dimeric dipeptide compound GSB-106 (bis-(N-monosuccinyl-L-seryl-L-lysine) hexamethylenediamide) has earlier been designed to mimic the TrkB-interaction 4 loop of BDNF. It displayed protective effect in various cell-damaging models in vitro. Animal studies uncovered antidepressive and neuroprotective properties upon GSB-106 per os administration. Current study shows that GSB-106 acts similarly to BDNF, promoting survival of serum-deprived neuronal-like SH-SY5Y cells. 100 nmol concentration of GSB-106 provided maximum neurotrophic effect, which corresponds to about 37% of the maximum effect provided by BDNF. Protective properties of GSB-106 arise from its ability to counteract cell apoptosis via activation of TrkB-dependent pro-survival mechanisms, including inactivation of pro-apoptotic BAD protein and suppression of caspases 9 and 3/7. Thus, our study has characterized neurotrophic activity of small dimeric compound GSB-106, which mimics certain biological functions of BDNF and neurotrophin-specific protective mechanisms. GSB-106 also displays similarities to some known low weight peptide and non-peptide TrkB ligands.
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Affiliation(s)
- L F Zainullina
- Federal State Budgetary Institution "Research Zakusov Institute of Pharmacology", 125315, Baltiyskaya str. 8, Moscow, Russia
| | - Yu V Vakhitova
- Federal State Budgetary Institution "Research Zakusov Institute of Pharmacology", 125315, Baltiyskaya str. 8, Moscow, Russia.
| | - A Yu Lusta
- Federal State Budgetary Institution "Research Zakusov Institute of Pharmacology", 125315, Baltiyskaya str. 8, Moscow, Russia
| | - T A Gudasheva
- Federal State Budgetary Institution "Research Zakusov Institute of Pharmacology", 125315, Baltiyskaya str. 8, Moscow, Russia
| | - S B Seredenin
- Federal State Budgetary Institution "Research Zakusov Institute of Pharmacology", 125315, Baltiyskaya str. 8, Moscow, Russia
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Mossa AH, Abdaem J, Cammisotto P, Campeau L. Deleterious impact of nerve growth factor precursor (proNGF) on bladder urothelial and smooth muscle cells. Cell Signal 2021; 81:109936. [PMID: 33529756 DOI: 10.1016/j.cellsig.2021.109936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/28/2021] [Accepted: 01/28/2021] [Indexed: 12/21/2022]
Abstract
The nerve growth factor precursor (proNGF) activates p75NTR receptor and promotes cell death in different tissues, yet this pathophysiological effect is not fully described in the bladder. The aim of this study was to identify the biological effect of proNGF/p75NTR activation on urothelial and smooth muscle (SM) cells of rodents' bladder. Cell viability was assessed by MTT assay which showed a significant reduction in urothelial viability after 24 h of incubation with proNGF in culture medium [5 or 10 nM], an effect not seen in SM cells. Western blot analysis on cellular protein extracts showed increased expression of the transmembrane TNF-α and activation of RhoA in urothelial cells exposed to proNGF with no evidence of a nuclear translocation of NF-κB assessed by western blotting on nuclear extracts and immunofluorescence. The activation of p75NTR-death domain related pathways in urothelial cells such as TNF-α or RhoA had a downstream effect on NO release and the junctional protein occludin, as estimated respectively by colorimetric and western blotting. On the other hand, proNGF did not induce TNF-α or RhoA expression in SM cells, but induced a significant NF-κB nuclear translocation. ProNGF had a different impact on SM as evidenced by a significant dose- and time-dependent increase in SM proliferation and migration examined by MTT test and cell migration assay. Together, our results indicate that activation of proNGF/p75NTR axis induces degenerative changes to the urothelial layer impacting its barrier and signaling integrity, while promoting adaptive proliferative changes in detrusor SM cells that can interfere with the contractile phenotype essential for proper bladder function.
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Affiliation(s)
- Abubakr H Mossa
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada
| | - Jacob Abdaem
- School of Medicine, McGill University, 3605 Rue de la Montagne, Montréal, QC H3G 2M1, Canada
| | - Philippe Cammisotto
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada
| | - Lysanne Campeau
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada; Urology Department, Jewish General Hospital, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada.
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Brattico E, Bonetti L, Ferretti G, Vuust P, Matrone C. Putting Cells in Motion: Advantages of Endogenous Boosting of BDNF Production. Cells 2021; 10:cells10010183. [PMID: 33477654 PMCID: PMC7831493 DOI: 10.3390/cells10010183] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 12/24/2020] [Accepted: 01/08/2021] [Indexed: 12/16/2022] Open
Abstract
Motor exercise, such as sport or musical activities, helps with a plethora of diseases by modulating brain functions in neocortical and subcortical regions, resulting in behavioural changes related to mood regulation, well-being, memory, and even cognitive preservation in aging and neurodegenerative diseases. Although evidence is accumulating on the systemic neural mechanisms mediating these brain effects, the specific mechanisms by which exercise acts upon the cellular level are still under investigation. This is particularly the case for music training, a much less studied instance of motor exercise than sport. With regards to sport, consistent neurobiological research has focused on the brain-derived neurotrophic factor (BDNF), an essential player in the central nervous system. BDNF stimulates the growth and differentiation of neurons and synapses. It thrives in the hippocampus, the cortex, and the basal forebrain, which are the areas vital for memory, learning, and higher cognitive functions. Animal models and neurocognitive experiments on human athletes converge in demonstrating that physical exercise reliably boosts BDNF levels. In this review, we highlight comparable early findings obtained with animal models and elderly humans exposed to musical stimulation, showing how perceptual exposure to music might affect BDNF release, similar to what has been observed for sport. We subsequently propose a novel hypothesis that relates the neuroplastic changes in the human brains after musical training to genetically- and exercise-driven BDNF levels.
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Affiliation(s)
- Elvira Brattico
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music Aarhus/Aalborg, 8000 Aarhus, Denmark; (L.B.); (P.V.)
- Department of Education, Psychology, Communication, University of Bari “Aldo Moro”, 70121 Bari, Italy
- Correspondence: (E.B.); (C.M.)
| | - Leonardo Bonetti
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music Aarhus/Aalborg, 8000 Aarhus, Denmark; (L.B.); (P.V.)
| | - Gabriella Ferretti
- Unit of Pharmacology, Department of Neuroscience, Faculty of Medicine, University of Naples Federico II, via Pansini 5, 80131 Naples, Italy;
| | - Peter Vuust
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music Aarhus/Aalborg, 8000 Aarhus, Denmark; (L.B.); (P.V.)
| | - Carmela Matrone
- Unit of Pharmacology, Department of Neuroscience, Faculty of Medicine, University of Naples Federico II, via Pansini 5, 80131 Naples, Italy;
- Correspondence: (E.B.); (C.M.)
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Ferrini F, Salio C, Boggio EM, Merighi A. Interplay of BDNF and GDNF in the Mature Spinal Somatosensory System and Its Potential Therapeutic Relevance. Curr Neuropharmacol 2021; 19:1225-1245. [PMID: 33200712 PMCID: PMC8719296 DOI: 10.2174/1570159x18666201116143422] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 09/17/2020] [Accepted: 10/05/2020] [Indexed: 11/22/2022] Open
Abstract
The growth factors BDNF and GDNF are gaining more and more attention as modulators of synaptic transmission in the mature central nervous system (CNS). The two molecules undergo a regulated secretion in neurons and may be anterogradely transported to terminals where they can positively or negatively modulate fast synaptic transmission. There is today a wide consensus on the role of BDNF as a pro-nociceptive modulator, as the neurotrophin has an important part in the initiation and maintenance of inflammatory, chronic, and/or neuropathic pain at the peripheral and central level. At the spinal level, BDNF intervenes in the regulation of chloride equilibrium potential, decreases the excitatory synaptic drive to inhibitory neurons, with complex changes in GABAergic/glycinergic synaptic transmission, and increases excitatory transmission in the superficial dorsal horn. Differently from BDNF, the role of GDNF still remains to be unraveled in full. This review resumes the current literature on the interplay between BDNF and GDNF in the regulation of nociceptive neurotransmission in the superficial dorsal horn of the spinal cord. We will first discuss the circuitries involved in such a regulation, as well as the reciprocal interactions between the two factors in nociceptive pathways. The development of small molecules specifically targeting BDNF, GDNF and/or downstream effectors is opening new perspectives for investigating these neurotrophic factors as modulators of nociceptive transmission and chronic pain. Therefore, we will finally consider the molecules of (potential) pharmacological relevance for tackling normal and pathological pain.
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Affiliation(s)
- Francesco Ferrini
- Department of Veterinary Sciences, University of Turin, Grugliasco, Italy
- Department of Psychiatry & Neuroscience, Université Laval, Québec, Canada
| | - Chiara Salio
- Department of Veterinary Sciences, University of Turin, Grugliasco, Italy
| | - Elena M. Boggio
- Department of Veterinary Sciences, University of Turin, Grugliasco, Italy
| | - Adalberto Merighi
- Department of Veterinary Sciences, University of Turin, Grugliasco, Italy
- National Institute of Neuroscience, Grugliasco, Italy
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Miranda-Lourenço C, Ribeiro-Rodrigues L, Fonseca-Gomes J, Tanqueiro SR, Belo RF, Ferreira CB, Rei N, Ferreira-Manso M, de Almeida-Borlido C, Costa-Coelho T, Freitas CF, Zavalko S, Mouro FM, Sebastião AM, Xapelli S, Rodrigues TM, Diógenes MJ. Challenges of BDNF-based therapies: From common to rare diseases. Pharmacol Res 2020; 162:105281. [PMID: 33161136 DOI: 10.1016/j.phrs.2020.105281] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/20/2020] [Accepted: 10/22/2020] [Indexed: 12/11/2022]
Abstract
Neurotrophins are a well-known family of neurotrophic factors that play an important role both in the central and peripheral nervous systems, where they modulate neuronal survival, development, function and plasticity. Brain-derived neurotrophic factor (BDNF) possesses diverse biological functions which are mediated by the activation of two main classes of receptors, the tropomyosin-related kinase (Trk) B and the p75 neurotrophin receptor (p75NTR). The therapeutic potential of BDNF has drawn attention since dysregulation of its signalling cascades has been suggested to underlie the pathogenesis of both common and rare diseases. Multiple strategies targeting this neurotrophin have been tested; most have found obstacles that ultimately hampered their effectiveness. This review focuses on the involvement of BDNF and its receptors in the pathophysiology of Alzheimer's disease (AD), Amyotrophic Lateral Sclerosis (ALS) and Rett Syndrome (RTT). We describe the known mechanisms leading to the impairment of BDNF/TrkB signalling in these disorders. Such mechanistic insight highlights how BDNF signalling compromise can take various shapes, nearly disease-specific. Therefore, BDNF-based therapeutic strategies must be specifically tailored and are more likely to succeed if a combination of resources is employed.
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Affiliation(s)
- Catarina Miranda-Lourenço
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Leonor Ribeiro-Rodrigues
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - João Fonseca-Gomes
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Sara R Tanqueiro
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Rita F Belo
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Catarina B Ferreira
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Nádia Rei
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Mafalda Ferreira-Manso
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Carolina de Almeida-Borlido
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Tiago Costa-Coelho
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Céline Felicidade Freitas
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Svitlana Zavalko
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Francisco M Mouro
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Ana M Sebastião
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Sara Xapelli
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Tiago M Rodrigues
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Institute of Molecular and Clinical Ophthalmology Basel (IOB), Mittlere Strasse 91, 4031 Basel, Switzerland
| | - Maria J Diógenes
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, 1649-028 Lisboa, Portugal.
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45
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Optimization of culture conditions for the efficient differentiation of mouse-induced pluripotent stem cells into dental epithelial-like cells. In Vitro Cell Dev Biol Anim 2020; 56:816-824. [PMID: 33051833 DOI: 10.1007/s11626-020-00505-x] [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: 05/08/2020] [Accepted: 09/02/2020] [Indexed: 10/23/2022]
Abstract
The establishment of a method to derive dental epithelial cells seems to be an important challenge toward realizing the whole tooth regeneration. In order to obtain a source of dental epithelial-like cells, a new methodology has been previously developed by our research group. In the method, induced pluripotent stem cells are cultured in suspension in the presence of neurotrophin-4 to form embryoid bodies followed by further adherent culture of the embryoid bodies in DMEM basal nutrient medium. The present study was directed to improve the efficiency of dental epithelial-like cell production, by focusing on the optimization of initial cell number for the formation of embryoid bodies and the addition of epidermal growth factor as well as its timing. Our results demonstrated that an initial cell number of 1000 cells/drop gives the highest efficiency of dental epithelial-like cell production. It appears that, under this condition, medium deterioration is moderated, and that cell-cell interactions are optimized within embryoid bodies. On the other hand, epidermal growth factor serves to increase the abundance of dental epithelial-like cells when added to the medium together with neurotrophin-4 during embryoid body formation. The promotive effect of epidermal growth factor may involve the transactivation of TrkB, mediated by the effectors of epidermal growth factor receptor signaling.
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Brahimi F, Galan A, Jmaeff S, Barcelona PF, De Jay N, Dejgaard K, Young JC, Kleinman CL, Thomas DY, Saragovi HU. Alternative Splicing of a Receptor Intracellular Domain Yields Different Ectodomain Conformations, Enabling Isoform-Selective Functional Ligands. iScience 2020; 23:101447. [PMID: 32829283 PMCID: PMC7452315 DOI: 10.1016/j.isci.2020.101447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/13/2020] [Accepted: 08/06/2020] [Indexed: 01/04/2023] Open
Abstract
Events at a receptor ectodomain affect the intracellular domain conformation, activating signal transduction (out-to-in conformational effects). We investigated the reverse direction (in-to-out) where the intracellular domain may impact on ectodomain conformation. The primary sequences of naturally occurring TrkC receptor isoforms (TrkC-FL and TrkC.T1) only differ at the intracellular domain. However, owing to their differential association with Protein Disulfide Isomerase the isoforms have different disulfide bonding and conformations at the ectodomain. Conformations were exploited to develop artificial ligands, mAbs, and small molecules, with isoform-specific binding and biased activation. Consistent, the physiological ligands NT-3 and PTP-sigma bind both isoforms, but NT-3 activates all signaling pathways, whereas PTP-sigma activates biased signals. Our data support an "in-to-out" model controlling receptor ectodomain conformation, a strategy that enables heterogeneity in receptors, ligands, and bioactivity. These concepts may be extended to the many wild-type or oncogenic receptors with known isoforms.
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Affiliation(s)
- Fouad Brahimi
- Lady Davis Institute-Jewish General Hospital, McGill University, 3755 Côte St. Catherine, E-535, Montreal, QC H3T 1E2, Canada
| | - Alba Galan
- Lady Davis Institute-Jewish General Hospital, McGill University, 3755 Côte St. Catherine, E-535, Montreal, QC H3T 1E2, Canada
| | - Sean Jmaeff
- Lady Davis Institute-Jewish General Hospital, McGill University, 3755 Côte St. Catherine, E-535, Montreal, QC H3T 1E2, Canada
- Department of Pharmacology, McGill University, Montreal, QC, Canada
| | - Pablo F. Barcelona
- Lady Davis Institute-Jewish General Hospital, McGill University, 3755 Côte St. Catherine, E-535, Montreal, QC H3T 1E2, Canada
| | - Nicolas De Jay
- Lady Davis Institute-Jewish General Hospital, McGill University, 3755 Côte St. Catherine, E-535, Montreal, QC H3T 1E2, Canada
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Kurt Dejgaard
- Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - Jason C. Young
- Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - Claudia L. Kleinman
- Lady Davis Institute-Jewish General Hospital, McGill University, 3755 Côte St. Catherine, E-535, Montreal, QC H3T 1E2, Canada
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - David Y. Thomas
- Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - H. Uri Saragovi
- Lady Davis Institute-Jewish General Hospital, McGill University, 3755 Côte St. Catherine, E-535, Montreal, QC H3T 1E2, Canada
- Department of Pharmacology, McGill University, Montreal, QC, Canada
- Department of Ophthalmology and Visual Science, McGill University, Montreal, QC, Canada
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Miranda-Lourenço C, Duarte ST, Palminha C, Gaspar C, Rodrigues TM, Magalhães-Cardoso T, Rei N, Colino-Oliveira M, Gomes R, Ferreira S, Rosa J, Xapelli S, Armstrong J, García-Cazorla À, Correia-de-Sá P, Sebastião AM, Diógenes MJ. Impairment of adenosinergic system in Rett syndrome: Novel therapeutic target to boost BDNF signalling. Neurobiol Dis 2020; 145:105043. [PMID: 32798727 DOI: 10.1016/j.nbd.2020.105043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/23/2020] [Accepted: 08/08/2020] [Indexed: 01/20/2023] Open
Abstract
Rett syndrome (RTT; OMIM#312750) is mainly caused by mutations in the X-linked MECP2 gene (methyl-CpG-binding protein 2 gene; OMIM*300005), which leads to impairments in the brain-derived neurotrophic factor (BDNF) signalling. The boost of BDNF mediated effects would be a significant breakthrough but it has been hampered by the difficulty to administer BDNF to the central nervous system. Adenosine, an endogenous neuromodulator, may accomplish that role since through A2AR it potentiates BDNF synaptic actions in healthy animals. We thus characterized several hallmarks of the adenosinergic and BDNF signalling in RTT and explored whether A2AR activation could boost BDNF actions. For this study, the RTT animal model, the Mecp2 knockout (Mecp2-/y) (B6.129P2 (C)-Mecp2tm1.1Bird/J) mouse was used. Whenever possible, parallel data was also obtained from post-mortem brain samples from one RTT patient. Ex vivo extracellular recordings of field excitatory post-synaptic potentials in CA1 hippocampal area were performed to evaluate synaptic transmission and long-term potentiation (LTP). RT-PCR was used to assess mRNA levels and Western Blot or radioligand binding assays were performed to evaluate protein levels. Changes in cortical and hippocampal adenosine content were assessed by liquid chromatography with diode array detection (LC/DAD). Hippocampal ex vivo experiments revealed that the facilitatory actions of BDNF upon LTP is absent in Mecp2-/y mice and that TrkB full-length (TrkB-FL) receptor levels are significantly decreased. Extracts of the hippocampus and cortex of Mecp2-/y mice revealed less adenosine amount as well as less A2AR protein levels when compared to WT littermates, which may partially explain the deficits in adenosinergic tonus in these animals. Remarkably, the lack of BDNF effect on hippocampal LTP in Mecp2-/y mice was overcome by selective activation of A2AR with CGS21680. Overall, in Mecp2-/y mice there is an impairment on adenosinergic system and BDNF signalling. These findings set the stage for adenosine-based pharmacological therapeutic strategies for RTT, highlighting A2AR as a therapeutic target in this devastating pathology.
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Affiliation(s)
- Catarina Miranda-Lourenço
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Sofia T Duarte
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal; Child Neurology Department, Hospital Dona Estefânia - Centro Hospitalar Universitário de Lisboa Central, Portugal.
| | - Cátia Palminha
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Cláudia Gaspar
- Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Tiago M Rodrigues
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal; Institute of Molecular and Clinical Ophtalmology, Mittlere Strasse 91, CH-4031 Basel, Switzerland.
| | - Teresa Magalhães-Cardoso
- Laboratório de Farmacologia e Neurobiologia / MedInUP, Instituto de Ciências Biomédicas Abel Salazar - Universidade do Porto (ICBAS-UP), Porto, Portugal.
| | - Nádia Rei
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Mariana Colino-Oliveira
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Rui Gomes
- Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Sara Ferreira
- Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Jéssica Rosa
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Sara Xapelli
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Judith Armstrong
- Genetics Department, Hospital Sant Joan de Deu. Institut Pediàtric de Recerca and CIBERER. (ISCIII), Barcelona, Spain.
| | - Àngels García-Cazorla
- Synaptic Metabolism Laboratory, Neurology Department; Institut Pediàtric de Recerca and CIBERER. (ISCIII), Barcelona, Spain.
| | - Paulo Correia-de-Sá
- Laboratório de Farmacologia e Neurobiologia / MedInUP, Instituto de Ciências Biomédicas Abel Salazar - Universidade do Porto (ICBAS-UP), Porto, Portugal.
| | - Ana M Sebastião
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
| | - Maria José Diógenes
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina e Instituto de Medicina Molecular - João Lobo Antunes, Universidade de Lisboa, Lisboa, Portugal.
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Mantuano E, Azmoon P, Banki MA, Lam MS, Sigurdson CJ, Gonias SL. A soluble derivative of PrP C activates cell-signaling and regulates cell physiology through LRP1 and the NMDA receptor. J Biol Chem 2020; 295:14178-14188. [PMID: 32788217 DOI: 10.1074/jbc.ra120.013779] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 08/04/2020] [Indexed: 11/06/2022] Open
Abstract
Cellular prion protein (PrPC) is a widely expressed glycosylphosphatidylinositol-anchored membrane protein. Scrapie prion protein is a misfolded and aggregated form of PrPC responsible for prion-induced neurodegenerative diseases. Understanding the function of the nonpathogenic PrPC monomer is an important objective. PrPC may be shed from the cell surface to generate soluble derivatives. Herein, we studied a recombinant derivative of PrPC (soluble cellular prion protein, S-PrP) that corresponds closely in sequence to a soluble form of PrPC shed from the cell surface by proteases in the A Disintegrin And Metalloprotease (ADAM) family. S-PrP activated cell-signaling in PC12 and N2a cells. TrkA was transactivated by Src family kinases and extracellular signal-regulated kinase 1/2 was activated downstream of Trk receptors. These cell-signaling events were dependent on the N-methyl-d-aspartate receptor (NMDA-R) and low-density lipoprotein receptor-related protein-1 (LRP1), which functioned as a cell-signaling receptor system in lipid rafts. Membrane-anchored PrPC and neural cell adhesion molecule were not required for S-PrP-initiated cell-signaling. S-PrP promoted PC12 cell neurite outgrowth. This response required the NMDA-R, LRP1, Src family kinases, and Trk receptors. In Schwann cells, S-PrP interacted with the LRP1/NMDA-R system to activate extracellular signal-regulated kinase 1/2 and promote cell migration. The effects of S-PrP on PC12 cell neurite outgrowth and Schwann cell migration were similar to those caused by other proteins that engage the LRP1/NMDA-R system, including activated α2-macroglobulin and tissue-type plasminogen activator. Collectively, these results demonstrate that shed forms of PrPC may exhibit important biological activities in the central nervous system and the peripheral nervous system by serving as ligands for the LRP1/NMDA-R system.
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Affiliation(s)
- Elisabetta Mantuano
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Pardis Azmoon
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Michael A Banki
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Michael S Lam
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Christina J Sigurdson
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Steven L Gonias
- Department of Pathology, University of California San Diego, La Jolla, California, USA
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Di Palma M, Sartini S, Lattanzi D, Cuppini R, Pita-Rodriguez M, Diaz-Carmenate Y, Narvaez M, Fuxe K, Borroto-Escuela DO, Ambrogini P. Evidence for the existence of A2AR-TrkB heteroreceptor complexes in the dorsal hippocampus of the rat brain: Potential implications of A2AR and TrkB interplay upon ageing. Mech Ageing Dev 2020; 190:111289. [PMID: 32565059 DOI: 10.1016/j.mad.2020.111289] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 06/14/2020] [Accepted: 06/16/2020] [Indexed: 10/24/2022]
Abstract
Adenosine A2A receptors (A2AR) are crucial in facilitating the BDNF action on synaptic transmission in the rat hippocampus primarily upon ageing. Furthermore, it has been suggested that A2AR-Tropomyosin related kinase B receptor (TrkB) crosstalk has a pivotal role in adenosine A2AR-mediated modulation of the BDNF action on hippocampal plasticity. Considering the impact of the above receptors interplay on what concerns BDNF-induced enhancement of synaptic transmission, gaining a better insight into the mechanisms behind this powerful crosstalk becomes of primary interest. Using in situ proximity ligation assay (PLA), the existence of a direct physical interaction between adenosine A2AR and TrkB is demonstrated. The A2AR-TrkB heteroreceptor complexes show a heterogeneous distribution within the rat dorsal hippocampus. High densities of the heteroreceptor complexes were observed in the pyramidal cell layers of CA1-CA3 regions and in the polymorphic layer of the dentate gyrus (DG). The stratum radiatum of the CA1-3 regions showed positive PLA signal in contrast to the oriens region. The molecular and granular layers of the DG also lacked significant densities of PLA positive heteroreceptor complexes, but subgranular zone showed some PLA positive cells. Their allosteric receptor-receptor interactions may significantly modulate BDNF signaling impacting on hippocampal plasticity which is impaired upon ageing.
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Affiliation(s)
- Michael Di Palma
- Department of Experimental and Clinical Medicine, Faculty of Medicine and Surgery, Università Politecnica Delle Marche, Ancona, Italy.
| | - Stefano Sartini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Davide Lattanzi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Riccardo Cuppini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Mariana Pita-Rodriguez
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden; Universidad de Málaga, Instituto de Investigación Biomédica de Málaga, Málaga, Spain; Departamento de Diagnóstico Molecular, Centro de Neurociencias de Cuba, La Habana, Cuba
| | | | - Manuel Narvaez
- Universidad de Málaga, Instituto de Investigación Biomédica de Málaga, Málaga, Spain
| | - Kjell Fuxe
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Dasiel O Borroto-Escuela
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy; Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Patrizia Ambrogini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
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50
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Regulation of TrkB cell surface expression-a mechanism for modulation of neuronal responsiveness to brain-derived neurotrophic factor. Cell Tissue Res 2020; 382:5-14. [PMID: 32556728 PMCID: PMC7529634 DOI: 10.1007/s00441-020-03224-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 04/27/2020] [Indexed: 12/27/2022]
Abstract
Neurotrophin signaling via receptor tyrosine kinases is essential for the development and function of the nervous system in vertebrates. TrkB activation and signaling show substantial differences to other receptor tyrosine kinases of the Trk family that mediate the responses to nerve growth factor and neurotrophin-3. Growing evidence suggests that TrkB cell surface expression is highly regulated and determines the sensitivity of neurons to brain-derived neurotrophic factor (BDNF). This translocation of TrkB depends on co-factors and modulators of cAMP levels, N-glycosylation, and receptor transactivation. This process can occur in very short time periods and the resulting rapid modulation of target cell sensitivity to BDNF could represent a mechanism for fine-tuning of synaptic plasticity and communication in complex neuronal networks. This review focuses on those modulatory mechanisms in neurons that regulate responsiveness to BDNF via control of TrkB surface expression.
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