1
|
Brenner M, Zink C, Witzinger L, Keller A, Hadamek K, Bothe S, Neuenschwander M, Villmann C, von Kries JP, Schindelin H, Jeanclos E, Gohla A. 7,8-Dihydroxyflavone is a direct inhibitor of human and murine pyridoxal phosphatase. eLife 2024; 13:RP93094. [PMID: 38856179 PMCID: PMC11164532 DOI: 10.7554/elife.93094] [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] [Indexed: 06/11/2024] Open
Abstract
Vitamin B6 deficiency has been linked to cognitive impairment in human brain disorders for decades. Still, the molecular mechanisms linking vitamin B6 to these pathologies remain poorly understood, and whether vitamin B6 supplementation improves cognition is unclear as well. Pyridoxal 5'-phosphate phosphatase (PDXP), an enzyme that controls levels of pyridoxal 5'-phosphate (PLP), the co-enzymatically active form of vitamin B6, may represent an alternative therapeutic entry point into vitamin B6-associated pathologies. However, pharmacological PDXP inhibitors to test this concept are lacking. We now identify a PDXP and age-dependent decline of PLP levels in the murine hippocampus that provides a rationale for the development of PDXP inhibitors. Using a combination of small-molecule screening, protein crystallography, and biolayer interferometry, we discover, visualize, and analyze 7,8-dihydroxyflavone (7,8-DHF) as a direct and potent PDXP inhibitor. 7,8-DHF binds and reversibly inhibits PDXP with low micromolar affinity and sub-micromolar potency. In mouse hippocampal neurons, 7,8-DHF increases PLP in a PDXP-dependent manner. These findings validate PDXP as a druggable target. Of note, 7,8-DHF is a well-studied molecule in brain disorder models, although its mechanism of action is actively debated. Our discovery of 7,8-DHF as a PDXP inhibitor offers novel mechanistic insights into the controversy surrounding 7,8-DHF-mediated effects in the brain.
Collapse
Affiliation(s)
- Marian Brenner
- Institute of Pharmacology and Toxicology, University of WürzburgWürzburgGermany
| | - Christoph Zink
- Institute of Pharmacology and Toxicology, University of WürzburgWürzburgGermany
| | - Linda Witzinger
- Institute of Pharmacology and Toxicology, University of WürzburgWürzburgGermany
| | - Angelika Keller
- Institute of Pharmacology and Toxicology, University of WürzburgWürzburgGermany
| | - Kerstin Hadamek
- Institute of Pharmacology and Toxicology, University of WürzburgWürzburgGermany
| | - Sebastian Bothe
- Rudolf Virchow Center for Integrative and Translational Bioimaging, University of WürzburgWürzburgGermany
| | | | - Carmen Villmann
- Institute of Clinical Neurobiology, University Hospital, University of WürzburgWürzburgGermany
| | | | - Hermann Schindelin
- Rudolf Virchow Center for Integrative and Translational Bioimaging, University of WürzburgWürzburgGermany
| | - Elisabeth Jeanclos
- Institute of Pharmacology and Toxicology, University of WürzburgWürzburgGermany
| | - Antje Gohla
- Institute of Pharmacology and Toxicology, University of WürzburgWürzburgGermany
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Chen YS, Zhang SM, Tan W, Zhu Q, Yue CX, Xiang P, Li JQ, Wei Z, Zeng Y. Early 7,8-Dihydroxyflavone Administration Ameliorates Synaptic and Behavioral Deficits in the Young FXS Animal Model by Acting on BDNF-TrkB Pathway. Mol Neurobiol 2023; 60:2539-2552. [PMID: 36680734 DOI: 10.1007/s12035-023-03226-w] [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: 09/21/2022] [Accepted: 12/30/2022] [Indexed: 01/22/2023]
Abstract
Fragile X syndrome (FXS) is the leading inherited form of intellectual disability and the most common cause of autism spectrum disorders. FXS patients exhibit severe syndromic features and behavioral alterations, including anxiety, hyperactivity, impulsivity, and aggression, in addition to cognitive impairment and seizures. At present, there are no effective treatments or cures for FXS. Previously, we have found the divergence of BDNF-TrkB signaling trajectories is associated with spine defects in early postnatal developmental stages of Fmr1 KO mice. Here, young fragile X mice were intraperitoneal injection with 7,8-Dihydroxyflavone (7,8-DHF), a high affinity tropomyosin receptor kinase B (TrkB) agonist. 7,8-DHF ameliorated morphological abnormities in dendritic spine and synaptic structure and rescued synaptic and hippocampus-dependent cognitive dysfunction. These observed improvements of 7,8-DHF involved decreased protein levels of BDNF, p-TrkBY816, p-PLCγ, and p-CaMKII in the hippocampus. In addition, 7,8-DHF intervention in primary hippocampal neurons increased p-TrkBY816 and activated the PLCγ1-CaMKII signaling pathway, leading to improvement of neuronal morphology. This study is the first to account for early life synaptic impairments, neuronal morphological, and cognitive delays in FXS in response to the abnormal BDNF-TrkB pathway. Present studies provide novel evidences about the effective early intervention in FXS mice at developmental stages and a strategy to produce powerful impacts on neural development, synaptic plasticity, and behaviors.
Collapse
Affiliation(s)
- Yu-Shan Chen
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Brain Science and Advanced Technology Institute, Wuhan University of Science and Technology, Wuhan, 430065, China
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Si-Ming Zhang
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Brain Science and Advanced Technology Institute, Wuhan University of Science and Technology, Wuhan, 430065, China
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Wei Tan
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Qiong Zhu
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Brain Science and Advanced Technology Institute, Wuhan University of Science and Technology, Wuhan, 430065, China
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Chao-Xiong Yue
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Brain Science and Advanced Technology Institute, Wuhan University of Science and Technology, Wuhan, 430065, China
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Peng Xiang
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Brain Science and Advanced Technology Institute, Wuhan University of Science and Technology, Wuhan, 430065, China
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Jin-Quan Li
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Brain Science and Advanced Technology Institute, Wuhan University of Science and Technology, Wuhan, 430065, China
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Zhen Wei
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Brain Science and Advanced Technology Institute, Wuhan University of Science and Technology, Wuhan, 430065, China
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Yan Zeng
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Brain Science and Advanced Technology Institute, Wuhan University of Science and Technology, Wuhan, 430065, China.
- Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China.
| |
Collapse
|
4
|
Márquez LA, Griego E, López Rubalcava C, Galván EJ. NMDA receptor activity during postnatal development determines intrinsic excitability and mossy fiber long-term potentiation of CA3 pyramidal cells. Hippocampus 2023. [PMID: 36938755 DOI: 10.1002/hipo.23524] [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: 12/02/2022] [Revised: 01/30/2023] [Accepted: 02/23/2023] [Indexed: 03/21/2023]
Abstract
Experimental manipulations that interfere with the functional expression of N-methyl-D-aspartate receptors (NMDARs) during prenatal neurodevelopment or critical periods of postnatal development are models that mimic behavioral and neurophysiological abnormalities of schizophrenia. Blockade of NMDARs with MK-801 during early postnatal development alters glutamate release and impairs the induction of NMDAR-dependent long-term plasticity at the CA1 area of the hippocampus. However, it remains unknown if other forms of hippocampal plasticity, such as α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR)-mediated short- and long-term potentiation, are compromised in response to neonatal treatment with MK-801. Consistent with this tenet, short- and long-term potentiation between dentate gyrus axons, the mossy fibers (MF), onto CA3 pyramidal cells (CA3 PCs) are mediated by AMPARs. By combining whole-cell patch clamp and extracellular recordings, we have demonstrated that transient blockade of NMDARs during early postnatal development induces a series of pre- and postsynaptic modifications at the MF-CA3 synapse. We found reduced glutamate release from the mossy boutons, increased paired-pulse ratio, and reduced AMPAR-mediated MF LTP levels. At the postsynaptic level, we found an altered NMDA/AMPA ratio and dysregulation of several potassium conductances that increased the excitability of CA3 PCs. In addition, MK-801-treated animals exhibited impaired spatial memory retrieval in the Barnes maze task. Our data demonstrate that transient hypofunction of NMDARs impacts NMDAR-independent forms of synaptic plasticity of the hippocampus.
Collapse
Affiliation(s)
- Luis A Márquez
- Departamento de Farmacobiología, CINVESTAV Unidad Sur, Ciudad de México, Mexico
| | - Ernesto Griego
- Departamento de Farmacobiología, CINVESTAV Unidad Sur, Ciudad de México, Mexico
| | | | - Emilio J Galván
- Departamento de Farmacobiología, CINVESTAV Unidad Sur, Ciudad de México, Mexico.,Centro de Investigaciones sobre el Envejecimiento, CIE-Cinvestav, Ciudad de México, Mexico
| |
Collapse
|
5
|
Zhang W, Ge MM, Zhang LQ, Yuan XM, Han SY, Manyande A, Tian YK, Tian XB. Dysfunction of the Brain-derived Neurotrophic Factor-Tyrosine Kinase B Signaling Pathway Contributes to Learning and Memory Impairments Induced by Neuroinflammation in Mice. Neuroscience 2022; 505:21-33. [DOI: 10.1016/j.neuroscience.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/27/2022] [Accepted: 10/03/2022] [Indexed: 11/25/2022]
|
6
|
Bazzari AH, Bazzari FH. BDNF Therapeutic Mechanisms in Neuropsychiatric Disorders. Int J Mol Sci 2022; 23:ijms23158417. [PMID: 35955546 PMCID: PMC9368938 DOI: 10.3390/ijms23158417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/16/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is the most abundant neurotrophin in the adult brain and functions as both a primary neurotrophic signal and a neuromodulator. It serves essential roles in neuronal development, maintenance, transmission, and plasticity, thereby influencing aging, cognition, and behavior. Accumulating evidence associates reduced central and peripheral BDNF levels with various neuropsychiatric disorders, supporting its potential utilization as a biomarker of central pathologies. Subsequently, extensive research has been conducted to evaluate restoring, or otherwise augmenting, BDNF transmission as a potential therapeutic approach. Promising results were indeed observed for genetic BDNF upregulation or exogenous administration using a multitude of murine models of neurological and psychiatric diseases. However, varying mechanisms have been proposed to underlie the observed therapeutic effects, and many findings indicate the engagement of disease-specific and other non-specific mechanisms. This is because BDNF essentially affects all aspects of neuronal cellular function through tropomyosin receptor kinase B (TrkB) receptor signaling, the disruptions of which vary between brain regions across different pathologies leading to diversified consequences on cognition and behavior. Herein, we review the neurophysiology of BDNF transmission and signaling and classify the converging and diverging molecular mechanisms underlying its therapeutic potentials in neuropsychiatric disorders. These include neuroprotection, synaptic maintenance, immunomodulation, plasticity facilitation, secondary neuromodulation, and preservation of neurovascular unit integrity and cellular viability. Lastly, we discuss several findings suggesting BDNF as a common mediator of the therapeutic actions of centrally acting pharmacological agents used in the treatment of neurological and psychiatric illness.
Collapse
Affiliation(s)
- Amjad H. Bazzari
- Faculty of Medicine, Arab American University, 13 Zababdeh, Jenin 240, Palestine
- Correspondence:
| | - Firas H. Bazzari
- Faculty of Pharmacy, Arab American University, 13 Zababdeh, Jenin 240, Palestine;
| |
Collapse
|
7
|
Yang S, Zhu G. 7,8-Dihydroxyflavone and Neuropsychiatric Disorders: A Translational Perspective from the Mechanism to Drug Development. Curr Neuropharmacol 2022; 20:1479-1497. [PMID: 34525922 PMCID: PMC9881092 DOI: 10.2174/1570159x19666210915122820] [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: 07/24/2021] [Revised: 08/26/2021] [Accepted: 09/12/2021] [Indexed: 11/22/2022] Open
Abstract
7,8-Dihydroxyflavone (7,8-DHF) is a kind of natural flavonoid with the potential to cross the blood-brain barrier. 7,8-DHF effectively mimics the effect of brain-derived neurotrophic factor (BDNF) in the brain to selectively activate tyrosine kinase receptor B (TrkB) and downstream signaling pathways, thus playing a neuroprotective role. The preclinical effects of 7,8-DHF have been widely investigated in neuropsychiatric disorders, including Alzheimer's disease (AD), Parkinson's disease (PD), depression, and memory impairment. Besides the effect on TrkB, 7,8-DHF could also function through fighting against oxidative stress, cooperating with estrogen receptors, or regulating intestinal flora. This review focuses on the recent experimental studies on depression, neurodegenerative diseases, and learning and memory functions. Additionally, the structural modification and preparation of 7,8-DHF were also concluded and proposed, hoping to provide a reference for the follow-up research and clinical drug development of 7,8-DHF in the field of neuropsychiatric disorders.
Collapse
Affiliation(s)
- Shaojie Yang
- Key Laboratory of Xin’an Medicine, the Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, 230038, China
| | - Guoqi Zhu
- Key Laboratory of Xin’an Medicine, the Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, 230038, China,Address correspondence to this author at the Anhui University of Chinese Medicine, Meishan Road 103, Hefei 230038, China; E-mail:
| |
Collapse
|
8
|
Zhan JQ, Chen CN, Wu SX, Wu HJ, Zou K, Xiong JW, Wei B, Yang YJ. Flavonoid fisetin reverses impaired hippocampal synaptic plasticity and cognitive function by regulating the function of AMPARs in a male rat model of schizophrenia. J Neurochem 2021; 158:413-428. [PMID: 33882624 DOI: 10.1111/jnc.15370] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 03/19/2021] [Accepted: 04/09/2021] [Indexed: 12/21/2022]
Abstract
Cognitive deficits are the core feature of schizophrenia and effective treatment strategies are still missing. Previous studies have reported that fisetin promotes long-term potentiation (LTP) and cognitive function in normal rodents and other model animals of neurological diseases. The aim of this study was to assess the effect of fisetin on synaptic plasticity and cognitive deficits caused by a brief disruption of N-methyl-D-aspartate receptors (NMDARs) with dizocilpine (MK-801) during early development in rats. The cognitive performance was examined by the Morris water maze task and a fear conditioning test. Hippocampal synaptic plasticity was investigated by field potential recording. The expression of α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid receptors (AMPARs) and cognition-related proteins was measured by western blotting. We found that intraperitoneal administration of fisetin rescued hippocampus-dependent spatial and contextual fear memory in MK-801 rats. In parallel with these behavioral results, fisetin treatment in MK-801 rats reversed the impairment of hippocampal LTP. At the molecular level, fisetin treatment selectively increased the phosphorylation and surface expression of AMPA receptor subunit 1 (GluA1) in MK-801-treated rats. Moreover, fisetin restored the phosphorylation levels of calcium-calmodulin-dependent kinaseII (CaMKII), cAMP response element-binding protein (CREB), and the extracellular signal-regulated kinase (ERK1/2) in MK-801-treated rats. Collectively, our findings demonstrate that fisetin treatment can reverse the deficits of hippocampal synaptic plasticity and memory in a male rat model of schizophrenia by restoring the phosphorylation and surface expression of AMPAR GluA1 subunit, suggesting fisetin as a promising therapeutic candidate for schizophrenia-associated cognitive deficits.
Collapse
Affiliation(s)
- Jin-Qiong Zhan
- Medical Experimental Center, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, P.R. China
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, P.R. China
- Jangxi Provincial Clinical Research Center on Mental Disorders, Nanchang, P.R. China
| | - Chun-Nuan Chen
- Department of Neurology, The Second Clinical Medical College, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, P.R. China
| | - Si-Xian Wu
- Medical Experimental Center, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, P.R. China
- Department of Psychology, Jiangxi Normal University, Nanchang, P.R. China
| | - Han-Jun Wu
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Ke Zou
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Jian-Wen Xiong
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, P.R. China
| | - Bo Wei
- Medical Experimental Center, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, P.R. China
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, P.R. China
- Jangxi Provincial Clinical Research Center on Mental Disorders, Nanchang, P.R. China
| | - Yuan-Jian Yang
- Medical Experimental Center, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, P.R. China
- Department of Psychiatry, Jiangxi Mental Hospital/Affiliated Mental Hospital of Nanchang University, Nanchang, P.R. China
- Jangxi Provincial Clinical Research Center on Mental Disorders, Nanchang, P.R. China
| |
Collapse
|
9
|
Harb M, Jagusch J, Durairaja A, Endres T, Leßmann V, Fendt M. BDNF haploinsufficiency induces behavioral endophenotypes of schizophrenia in male mice that are rescued by enriched environment. Transl Psychiatry 2021; 11:233. [PMID: 33888685 PMCID: PMC8062437 DOI: 10.1038/s41398-021-01365-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/26/2021] [Accepted: 04/12/2021] [Indexed: 02/02/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is implicated in a number of processes that are crucial for healthy functioning of the brain. Schizophrenia is associated with low BDNF levels in the brain and blood, however, not much is known about BDNF's role in the different symptoms of schizophrenia. Here, we used BDNF-haploinsufficient (BDNF+/-) mice to investigate the role of BDNF in different mouse behavioral endophenotypes of schizophrenia. Furthermore, we assessed if an enriched environment can prevent the observed changes. In this study, male mature adult wild-type and BDNF+/- mice were tested in mouse paradigms for cognitive flexibility (attentional set shifting), sensorimotor gating (prepulse inhibition), and associative emotional learning (safety and fear conditioning). Before these tests, half of the mice had a 2-month exposure to an enriched environment, including running wheels. After the tests, BDNF brain levels were quantified. BDNF+/- mice had general deficits in the attentional set-shifting task, increased startle magnitudes, and prepulse inhibition deficits. Contextual fear learning was not affected but safety learning was absent. Enriched environment housing completely prevented the observed behavioral deficits in BDNF+/- mice. Notably, the behavioral performance of the mice was negatively correlated with BDNF protein levels. These novel findings strongly suggest that decreased BDNF levels are associated with several behavioral endophenotypes of schizophrenia. Furthermore, an enriched environment increases BDNF protein to wild-type levels and is thereby able to rescue these behavioral endophenotypes.
Collapse
Affiliation(s)
- Mahmoud Harb
- grid.5807.a0000 0001 1018 4307Institute for Pharmacology and Toxicology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Justina Jagusch
- grid.5807.a0000 0001 1018 4307Institute for Pharmacology and Toxicology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Archana Durairaja
- grid.5807.a0000 0001 1018 4307Institute for Pharmacology and Toxicology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Thomas Endres
- grid.5807.a0000 0001 1018 4307Institute of Physiology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Volkmar Leßmann
- Institute of Physiology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany. .,Center for Behavioral Brain Sciences, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.
| | - Markus Fendt
- Institute for Pharmacology and Toxicology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany. .,Center for Behavioral Brain Sciences, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.
| |
Collapse
|
10
|
Halder N, Lal G. Cholinergic System and Its Therapeutic Importance in Inflammation and Autoimmunity. Front Immunol 2021; 12:660342. [PMID: 33936095 PMCID: PMC8082108 DOI: 10.3389/fimmu.2021.660342] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/26/2021] [Indexed: 12/11/2022] Open
Abstract
Neurological and immunological signals constitute an extensive regulatory network in our body that maintains physiology and homeostasis. The cholinergic system plays a significant role in neuroimmune communication, transmitting information regarding the peripheral immune status to the central nervous system (CNS) and vice versa. The cholinergic system includes the neurotransmitter\ molecule, acetylcholine (ACh), cholinergic receptors (AChRs), choline acetyltransferase (ChAT) enzyme, and acetylcholinesterase (AChE) enzyme. These molecules are involved in regulating immune response and playing a crucial role in maintaining homeostasis. Most innate and adaptive immune cells respond to neuronal inputs by releasing or expressing these molecules on their surfaces. Dysregulation of this neuroimmune communication may lead to several inflammatory and autoimmune diseases. Several agonists, antagonists, and inhibitors have been developed to target the cholinergic system to control inflammation in different tissues. This review discusses how various molecules of the neuronal and non-neuronal cholinergic system (NNCS) interact with the immune cells. What are the agonists and antagonists that alter the cholinergic system, and how are these molecules modulate inflammation and immunity. Understanding the various functions of pharmacological molecules could help in designing better strategies to control inflammation and autoimmunity.
Collapse
Affiliation(s)
- Namrita Halder
- Laboratory of Autoimmunity and Tolerance, National Centre for Cell Science, Ganeshkhind, Pune, India
| | - Girdhari Lal
- Laboratory of Autoimmunity and Tolerance, National Centre for Cell Science, Ganeshkhind, Pune, India
| |
Collapse
|
11
|
Wang N, Liu X, Li XT, Li XX, Ma W, Xu YM, Liu Y, Gao Q, Yang T, Wang H, Peng Y, Zhu XF, Guan YZ. 7,8-Dihydroxyflavone Alleviates Anxiety-Like Behavior Induced by Chronic Alcohol Exposure in Mice Involving Tropomyosin-Related Kinase B in the Amygdala. Mol Neurobiol 2021; 58:92-105. [PMID: 32895785 DOI: 10.1007/s12035-020-02111-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/01/2020] [Indexed: 01/08/2023]
Abstract
Alcohol use-associated disorders are highly comorbid with anxiety disorders; however, their mechanism remains unknown. The amygdala plays a central role in anxiety. We recently found that 7,8-dihydroxyflavone (7,8-DHF) significantly reduces withdrawal symptoms in a rat model of chronic intermittent alcohol (ethanol) exposure. This study aimed to determine the role of 7,8-DHF in regulating anxiety induced by chronic alcohol exposure and its associated underlying mechanism. Male C57BL/6J mice were exposed to chronic intermittent alcohol for 3 weeks followed by alcohol withdrawal for 12 h with or without 7,8-DHF administered intraperitoneally. All mice were tested using an open field test and elevated plus maze to assess anxiety-like behaviors. Synaptic activity and intrinsic excitability in basal and lateral amygdala (BLA) neurons were assessed using electrophysiological recordings. 7,8-DHF alleviated alcohol-induced anxiety-like behavior and attenuated alcohol-induced enhancement of activities in BLA pyramidal neurons. Furthermore, 7,8-DHF prevented alcohol withdrawal-evoked augmentation of glutamatergic transmission in the amygdala and had no effect on GABAergic transmission in the amygdala, as demonstrated by unaltered frequency and amplitude of spontaneous inhibitory postsynaptic currents. Microinjection of K252a, a tropomyosin-related kinase B (TrkB) antagonist, into the BLA blocked the effects of 7,8-DHF on anxiety-like behavior and neuronal activity in the BLA. Our findings suggest that 7,8-DHF alleviates alcohol-induced anxiety-like behavior induced by chronic alcohol exposure through regulation of glutamate transmission involving TrKB in the BLA.
Collapse
Affiliation(s)
- Na Wang
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Xing Liu
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Xin-Tong Li
- Department of Neurology, The Affiliated First Hospital of Jiamusi University, Jiamusi, 154000, China
| | - Xin-Xin Li
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Wei Ma
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Yan-Min Xu
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Yong Liu
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Qing Gao
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Tao Yang
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Hongxuan Wang
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510828, China
| | - Ying Peng
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510828, China
| | - Xiao-Feng Zhu
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China.
| | - Yan-Zhong Guan
- Department of Physiology & Neurobiology, Mudanjiang Medical University, Mudanjiang, 157011, China.
| |
Collapse
|
12
|
Zhu W, Yang F, Cai X, Zhang W, Zhang J, Cai M, Li X, Xiang J, Cai D. Role of glucocorticoid receptor phosphorylation-mediated synaptic plasticity in anxiogenic and depressive behaviors induced by monosodium glutamate. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2021; 394:151-164. [PMID: 32444989 DOI: 10.1007/s00210-020-01845-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/19/2020] [Indexed: 12/15/2022]
Abstract
Psychiatric diseases and metabolic disorders frequently cooccur, yet the mechanisms underlying this interaction remain unknown. The aim of this study was to determine the role of glucocorticoid receptor (GR) phosphorylation in the comorbidity of metabolic and psychiatric disorders. Neonatal Sprague-Dawley rats were subcutaneously injected with monosodium glutamate (MSG) every 2 days for 10 days after birth. Metabolic and behavioral tests were performed 12 weeks later. Golgi staining and transmission electron microscopy (TEM) were performed to evaluate synaptic structural plasticity. Changes in GR phosphorylation and the BDNF/TrkB pathway were evaluated by western blotting and immunofluorescence. We found that MSG-treated rats displayed significant metabolic abnormalities accompanied by anxiogenic and depressive behaviors, an altered synaptic ultrastructure and the loss of dendritic spines. The expression of phosphorylated GR was reduced in the brain. Furthermore, a specific agonist of BDNF/TrkB significantly reversed the reduction in GR phosphorylation, as well as the metabolic and behavioral outcomes. These findings indicate that a decrease in BDNF/TrkB pathway-dependent GR phosphorylation is a long-term effect of MSG treatment that may contribute to metabolic and behavioral disturbances.
Collapse
Affiliation(s)
- Wen Zhu
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Laboratory of Neurology, Institute of Integrative Medicine, Fudan University, Shanghai, 200032, China
| | - Feng Yang
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Laboratory of Neurology, Institute of Integrative Medicine, Fudan University, Shanghai, 200032, China
| | - Xiaofang Cai
- Department of Stomatology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Wen Zhang
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Laboratory of Neurology, Institute of Integrative Medicine, Fudan University, Shanghai, 200032, China
| | - Jingsi Zhang
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Laboratory of Neurology, Institute of Integrative Medicine, Fudan University, Shanghai, 200032, China
| | - Min Cai
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Laboratory of Neurology, Institute of Integrative Medicine, Fudan University, Shanghai, 200032, China
| | - Xiangting Li
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Laboratory of Neurology, Institute of Integrative Medicine, Fudan University, Shanghai, 200032, China
| | - Jun Xiang
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
- Laboratory of Neurology, Institute of Integrative Medicine, Fudan University, Shanghai, 200032, China.
| | - Dingfang Cai
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
- Laboratory of Neurology, Institute of Integrative Medicine, Fudan University, Shanghai, 200032, China.
| |
Collapse
|
13
|
Fan CH, Lin CW, Huang HJ, Lee-Chen GJ, Sun YC, Lin W, Chen CM, Chang KH, Su MT, Hsieh-Li HM. LMDS-1, a potential TrkB receptor agonist provides a safe and neurotrophic effect for early-phase Alzheimer's disease. Psychopharmacology (Berl) 2020; 237:3173-3190. [PMID: 32748031 DOI: 10.1007/s00213-020-05602-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 06/26/2020] [Indexed: 12/12/2022]
Abstract
RATIONALE The signaling pathways of tropomyosin-related kinase B (TrkB) receptor play a pivotal role in axonal sprouting, proliferation of dendritic arbor, synaptic plasticity, and neuronal differentiation. The levels of BDNF and TrkB receptor were reduced in patients with Alzheimer's disease (AD). OBJECTIVES The activation of TrkB signaling pathways is a potential strategy for AD therapies. We intended to identify potential TrkB agonists to activate the neuroprotective signaling to alleviate the pathological features of AD mice. RESULTS Both of the Aβ-deteriorated hippocampal primary neurons and mouse models were generated and showed AD characteristics. We first investigated 12 potential TrkB agonists with primary hippocampal neurons of mice. Both 7,8-DHF and LMDS-1 were identified to have better effect than the other compounds on dendritic arborization of the neurons and were further applied to the Aβ-injected mouse model. The short-term cognitive behavior and pathology in the mice were improved by LMDS-1. Further investigation indicated that LMDS-1 activated the TrkB through phosphorylation at Y516 rather than Y816. In addition, the ERK but not CaMKII or Akt was activated in the mouse hippocampus with LMDS-1 administration. LMDS-1 treatment also upregulated CREB and BDNF while downregulated the GSK3β active form and tau phosphorylation. CONCLUSIONS This study suggests that LMDS-1 upregulates the expression of BDNF and ameliorates the early-phase phenotypes of the AD-like mice through the pTrkB (Y516)-ERK-CREB pathway. In addition, LMDS-1 has better effect than 7,8-DHF in ameliorating the behavioral and pathological features of AD-like mice.
Collapse
Affiliation(s)
- Chia-Hao Fan
- Department of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Chia-Wei Lin
- Department of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Hei-Jen Huang
- Department of Nursing, Mackay Junior College of Medicine, Nursing and Management, Taipei, 11260, Taiwan
| | - Guey-Jen Lee-Chen
- Department of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Ying-Chieh Sun
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Wenwei Lin
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Chiung-Mei Chen
- Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, 33305, Taiwan
| | - Kuo-Hsuan Chang
- Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, 33305, Taiwan
| | - Ming-Tsan Su
- Department of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan.
| | - Hsiu Mei Hsieh-Li
- Department of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan.
| |
Collapse
|
14
|
Emili M, Guidi S, Uguagliati B, Giacomini A, Bartesaghi R, Stagni F. Treatment with the flavonoid 7,8-Dihydroxyflavone: a promising strategy for a constellation of body and brain disorders. Crit Rev Food Sci Nutr 2020; 62:13-50. [DOI: 10.1080/10408398.2020.1810625] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Marco Emili
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Sandra Guidi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Beatrice Uguagliati
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Andrea Giacomini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Renata Bartesaghi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Fiorenza Stagni
- Department for Life Quality Studies, University of Bologna, Rimini, Italy
| |
Collapse
|
15
|
Gudasheva TA, Povarnina PY, Tarasiuk AV, Seredenin SB. Low-molecular mimetics of nerve growth factor and brain-derived neurotrophic factor: Design and pharmacological properties. Med Res Rev 2020; 41:2746-2774. [PMID: 32808322 DOI: 10.1002/med.21721] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 08/02/2020] [Accepted: 08/05/2020] [Indexed: 12/20/2022]
Abstract
To overcome the limitations of the clinical use of neurotrophins nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF), scientists have been trying to create their low-molecular-weight mimetics having improved pharmacokinetic properties and lacking side effects of full-sized proteins since the 90s of the last century. The efforts of various research groups have led to the production of peptide and nonpeptide mimetics, being agonists or modulators of the corresponding Trk or p75 receptors that reproduced the therapeutic effects of full-sized proteins. This review discusses different strategies and approaches to the design of such compounds. The relationship between the structure of the mimetics obtained and their action mechanisms and pharmacological properties are analyzed. Special attention is paid to the dipeptide mimetics of individual NGF and BDNF loops having different patterns of activation of Trk receptors signal transduction pathways, phosphoinositide 3-kinase/protein kinase B and mitogen-activated protein kinase/extracellular signal-regulated kinase, which allowed to evaluate the contribution of each pathway to different pharmacological effects. In conclusion, data on therapeutically promising compounds being at different stages of preclinical and clinical studies are summarized.
Collapse
Affiliation(s)
- Tatiana A Gudasheva
- Medicinal Chemistry Department, V. V. Zakusov Research Institute of Pharmacology, Moscow, Russian Federation
| | - Polina Y Povarnina
- Medicinal Chemistry Department, V. V. Zakusov Research Institute of Pharmacology, Moscow, Russian Federation
| | - Aleksey V Tarasiuk
- Medicinal Chemistry Department, V. V. Zakusov Research Institute of Pharmacology, Moscow, Russian Federation
| | - Sergey B Seredenin
- Department of Pharmacogenetics, V. V. Zakusov Research Institute of Pharmacology, Moscow, Russian Federation
| |
Collapse
|
16
|
Gao WL, Li XH, Dun XP, Jing XK, Yang K, Li YK. Grape Seed Proanthocyanidin Extract Ameliorates Streptozotocin-induced Cognitive and Synaptic Plasticity Deficits by Inhibiting Oxidative Stress and Preserving AKT and ERK Activities. Curr Med Sci 2020; 40:434-443. [PMID: 32681248 DOI: 10.1007/s11596-020-2197-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/25/2020] [Indexed: 02/07/2023]
Abstract
Progressive memory loss and cognitive impairment are the main clinical manifestations of Alzheimer's disease (AD). Currently, there is no effective drug available for the treatment of AD. Previous studies have demonstrated that the cognitive impairment of AD is associated with oxidative stress and the inhibition of AKT and ERK phosphorylation. Grape seed proanthocyanidin extract (GSPE) has been shown to have strong antioxidant effect and can protect the nervous system from oxidative stress damage. This study aimed to investigate the protective effect of GSPE on the cognitive and synaptic impairments of AD using a sporadic AD rat model induced by intracerebroventricular (ICV) injection of streptozotocin (STZ) (ICV-STZ). Rats were treated with GSPE (50, 100, or 200 mg/kg every day) by intragastrical (ig.) administration for continuous 7 weeks, and ICV-STZ (3 mg/kg) was performed on the first day and third day of week 5. Learning and memory abilities were assessed by the Morris water maze (MWM) test at week 8. After behavioral test, hippocampal long-term potentiation (LTP) was recorded, and the levels of malondialdehyde (MDA), superoxide dismutases (SOD), glutathione (GSH) and the protein expression of AKT and ERK were measured in the hippocampus and cerebral cortex of rats. Our study revealed that ICV-STZ significantly impaired the working learning ability and hippocampal LTP of rats, significantly increased the levels of MDA, and decreased the activity of SOD and GSH in the hippocampus and cerebral cortex. In contrast, GSPE treatment prevented the impairment of cognitive function and hippocampal LTP induced by ICV-STZ, decreased the level of MDA, and increased the level of SOD and GSH. Furthermore, Western blot results showed that GSPE treatment could prevent the loss of AKT and ERK activities in the hippocampus and cerebral cortex induced by ICV-STZ. Our findings demonstrate that GSPE treatment could ameliorate the impairment of cognitive ability and hippocampal synaptic plasticity in a rat model of sporadic AD by inhibiting oxidative stress and preserving AKT and ERK activities. Therefore, GSPE may be an effective agent for the treatment of cognitive deficits associated with sporadic AD.
Collapse
Affiliation(s)
- Wei-Li Gao
- School of Pharmacy, Hubei University of Science and Technology, Xianning, 437100, China.,Hubei Key Laboratory of Cardiovascular Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, 437100, China.,Department of Pharmacy, Huangshi Central Hospital, Afiliated Hospial of Hubei Polytechnic University, Edong Healthcare Group, Huangshi, 435000, China
| | - Xiang-Hua Li
- School of Pharmacy, Hubei University of Science and Technology, Xianning, 437100, China
| | - Xin-Peng Dun
- School of Pharmacy, Hubei University of Science and Technology, Xianning, 437100, China
| | - Xiao-Kuan Jing
- School of Pharmacy, Hubei University of Science and Technology, Xianning, 437100, China
| | - Ke Yang
- School of Pharmacy, Hubei University of Science and Technology, Xianning, 437100, China
| | - Yan-Kun Li
- School of Pharmacy, Hubei University of Science and Technology, Xianning, 437100, China. .,Hubei Key Laboratory of Cardiovascular Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, 437100, China.
| |
Collapse
|
17
|
Hogarth SJ, Djouma E, van den Buuse M. 7,8-Dihydroxyflavone Enhances Cue-Conditioned Alcohol Reinstatement in Rats. Brain Sci 2020; 10:brainsci10050270. [PMID: 32369970 PMCID: PMC7287665 DOI: 10.3390/brainsci10050270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 12/21/2022] Open
Abstract
Alcohol use disorder (AUD) is a detrimental disease that develops through chronic ethanol exposure. Reduced brain-derived neurotrophic factor (BDNF) expression has been associated with AUD and alcohol addiction, however the effects of activation of BDNF signalling in the brain on voluntary alcohol intake reinstatement and relapse are unknown. We therefore trained male and female Sprague Dawley rats in operant chambers to self-administer a 10% ethanol solution. Following baseline acquisition and progressive ratio (PR) analysis, rats were split into drug and vehicle groups during alcohol lever extinction. The animals received two weeks of daily IP injection of either the BDNF receptor, TrkB, agonist, 7,8-dihydroxyflavone (7,8-DHF), or vehicle. During acquisition of alcohol self-administration, males had significantly higher absolute numbers of alcohol-paired lever presses and a higher PR breakpoint. However, after adjusting for body weight, the amount of ethanol was not different between the sexes and the PR breakpoint was higher in females than males. Following extinction, alcohol-primed reinstatement in male rats was not altered by pretreatment with 7,8-DHF when adjusted for body weight. In contrast, in female rats, the weight-adjusted potential amount of ethanol, but not absolute numbers of active lever presses, was significantly enhanced by 7,8-DHF treatment during reinstatement. Analysis of spontaneous locomotor activity in automated photocell cages suggested that the effect of 7,8-DHF was not associated with hyperactivity. These results suggest that stimulation of the TrkB receptor may contribute to reward craving and relapse in AUD, particularly in females.
Collapse
Affiliation(s)
- Samuel J. Hogarth
- School of Psychology and Public Health, Department of Psychology and Counselling, La Trobe University, Melbourne 3086, VIC, Australia;
| | - Elvan Djouma
- School of Life Sciences, Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne 3086, VIC, Australia;
| | - Maarten van den Buuse
- School of Psychology and Public Health, Department of Psychology and Counselling, La Trobe University, Melbourne 3086, VIC, Australia;
- Department of Pharmacology, University of Melbourne, Melbourne 3010, VIC, Australia
- The College of Public Health, Medicinal and Veterinary Sciences, James Cook University Townsville, Townsville 4811, QLD, Australia
- Correspondence: ; Tel.: +61-3-9479-5257
| |
Collapse
|
18
|
Gudasheva TA, Povarnina P, Tarasiuk AV, Seredenin SB. The Low Molecular Weight Brain-derived Neurotrophic Factor Mimetics with Antidepressant-like Activity. Curr Pharm Des 2020; 25:729-737. [PMID: 30931847 DOI: 10.2174/1381612825666190329122852] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 03/25/2019] [Indexed: 12/17/2022]
Abstract
The search for new highly-effective, fast-acting antidepressant drugs is extremely relevant. Brain derived neurotrophic factor (BDNF) and signaling through its tropomyosin-related tyrosine kinase B (TrkB) receptor, represents one of the most promising therapeutic targets for treating depression. BDNF is a key regulator of neuroplasticity in the hippocampus and the prefrontal cortex, the dysfunction of which is considered to be the main pathophysiological hallmark of this disorder. BDNF itself has no favorable drug-like properties due to poor pharmacokinetics and possible adverse effects. The design of small, proteolytically stable BDNF mimetics might provide a useful approach for the development of therapeutic agents. Two small molecule BDNF mimetics with antidepressant-like activity have been reported, 7,8-dihydroxyflavone and the dimeric dipeptide mimetic of BDNF loop 4, GSB-106. The article reflects on the current literature on the role of BDNF as a promising therapeutic target in the treatment of depression and on the current advances in the development of small molecules on the base of this neurotrophin as potential antidepressants.
Collapse
Affiliation(s)
- Tatiana A Gudasheva
- Medicinal Chemistry Department, V.V. Zakusov Research Institute of Pharmacology, ul. Baltijskaya, 8, 124315 Moscow, Russian Federation
| | - Polina Povarnina
- Medicinal Chemistry Department, V.V. Zakusov Research Institute of Pharmacology, ul. Baltijskaya, 8, 124315 Moscow, Russian Federation
| | - Alexey V Tarasiuk
- Medicinal Chemistry Department, V.V. Zakusov Research Institute of Pharmacology, ul. Baltijskaya, 8, 124315 Moscow, Russian Federation
| | - Sergey B Seredenin
- Department of Pharmacogenetics, V.V. Zakusov Research Institute of Pharmacology, ul. Baltijskaya, 8, 124315 Moscow, Russian Federation
| |
Collapse
|
19
|
Abstract
The receptor tyrosine kinases (RTKs) are a large family of proteins that transduce extracellular signals to the inside of the cell to ultimately affect important cellular functions such as cell proliferation, survival, apoptosis, differentiation, and migration. They are expressed in the nervous system and can regulate behavior through modulation of neuronal and glial function. As a result, RTKs are implicated in neurodegenerative and psychiatric disorders such as depression and addiction. Evidence has emerged that 5 RTKs (tropomyosin-related kinase B (TrkB), RET proto-oncogene (RET), anaplastic lymphoma kinase (ALK), fibroblast growth factor receptor (FGFR), and epidermal growth factor receptor (EGFR)) modulate alcohol drinking and other behaviors related to alcohol addiction. RTKs are considered highly "druggable" targets and small-molecule inhibitors of RTKs have been developed for the treatment of various conditions, particularly cancer. These kinases are therefore attractive targets for the development of new pharmacotherapies to treat alcohol use disorder (AUD). This review will examine the preclinical evidence describing TrkB, RET, ALK, FGFR, and EGFR modulation of alcohol drinking and other behaviors relevant to alcohol abuse.
Collapse
Affiliation(s)
- Kana Hamada
- Department of Psychiatry and Center for Alcohol Research in Epigenetics, University of Illinois at Chicago, 1601 West Taylor Street, MC 912, Chicago, Illinois, 60612, USA
| | - Amy W Lasek
- Department of Psychiatry and Center for Alcohol Research in Epigenetics, University of Illinois at Chicago, 1601 West Taylor Street, MC 912, Chicago, Illinois, 60612, USA.
| |
Collapse
|
20
|
Fukuchi M, Okuno Y, Nakayama H, Nakano A, Mori H, Mitazaki S, Nakano Y, Toume K, Jo M, Takasaki I, Watanabe K, Shibahara N, Komatsu K, Tabuchi A, Tsuda M. Screening inducers of neuronal BDNF gene transcription using primary cortical cell cultures from BDNF-luciferase transgenic mice. Sci Rep 2019; 9:11833. [PMID: 31413298 PMCID: PMC6694194 DOI: 10.1038/s41598-019-48361-4] [Citation(s) in RCA: 15] [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: 05/05/2019] [Accepted: 08/01/2019] [Indexed: 01/04/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is a key player in synaptic plasticity, and consequently, learning and memory. Because of its fundamental role in numerous neurological functions in the central nervous system, BDNF has utility as a biomarker and drug target for neurodegenerative and neuropsychiatric disorders. Here, we generated a screening assay to mine inducers of Bdnf transcription in neuronal cells, using primary cultures of cortical cells prepared from a transgenic mouse strain, specifically, Bdnf-Luciferase transgenic (Bdnf-Luc) mice. We identified several active extracts from a library consisting of 120 herbal extracts. In particular, we focused on an active extract prepared from Ginseng Radix (GIN), and found that GIN activated endogenous Bdnf expression via cAMP-response element-binding protein-dependent transcription. Taken together, our current screening assay can be used for validating herbal extracts, food-derived agents, and chemical compounds for their ability to induce Bdnf expression in neurons. This method will be beneficial for screening of candidate drugs for ameliorating symptoms of neurological diseases associated with reduced Bdnf expression in the brain, as well as candidate inhibitors of aging-related cognitive decline.
Collapse
Affiliation(s)
- Mamoru Fukuchi
- Laboratory of Molecular Neuroscience, Faculty of Pharmacy, Takasaki University of Health and Welfare, 60 Nakaorui-machi, Takasaki-shi, Gunma, 370-0033, Japan.
- Department of Biological Chemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan.
| | - Yui Okuno
- Department of Biological Chemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Hironori Nakayama
- Department of Biological Chemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Aoi Nakano
- Department of Biological Chemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Hisashi Mori
- Department of Molecular Neuroscience, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Satoru Mitazaki
- Laboratory of Molecular Neuroscience, Faculty of Pharmacy, Takasaki University of Health and Welfare, 60 Nakaorui-machi, Takasaki-shi, Gunma, 370-0033, Japan
- Laboratory of Forensic Toxicology, Faculty of Pharmacy, Takasaki University of Health and Welfare, 60 Nakaorui-machi, Takasaki-shi, Gunma, 370-0033, Japan
| | - Yuka Nakano
- Laboratory of Molecular Neuroscience, Faculty of Pharmacy, Takasaki University of Health and Welfare, 60 Nakaorui-machi, Takasaki-shi, Gunma, 370-0033, Japan
| | - Kazufumi Toume
- Division of Pharmacognosy, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Michiko Jo
- Division of Kampo Diagnostics, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Ichiro Takasaki
- Department of Pharmacology, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama-shi, Toyama, 930-8555, Japan
| | - Kazuki Watanabe
- Laboratory of Natural Medicines, Faculty of Pharmacy, Takasaki University of Health and Welfare, 60 Nakaorui-machi, Takasaki-shi, Gunma, 370-0033, Japan
| | - Naotoshi Shibahara
- Division of Kampo Diagnostics, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Katsuko Komatsu
- Division of Pharmacognosy, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Akiko Tabuchi
- Department of Biological Chemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Masaaki Tsuda
- Department of Biological Chemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| |
Collapse
|
21
|
Hernández-Frausto M, López-Rubalcava C, Galván EJ. Progressive Alterations in Synaptic Transmission and Plasticity of Area CA1 Precede the Cognitive Impairment Associated with Neonatal Administration of MK-801. Neuroscience 2019; 404:205-217. [DOI: 10.1016/j.neuroscience.2019.01.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 12/26/2018] [Accepted: 01/21/2019] [Indexed: 11/26/2022]
|
22
|
Cho SJ, Kang KA, Piao MJ, Ryu YS, Fernando PDSM, Zhen AX, Hyun YJ, Ahn MJ, Kang HK, Hyun JW. 7,8-Dihydroxyflavone Protects High Glucose-Damaged Neuronal Cells against Oxidative Stress. Biomol Ther (Seoul) 2019; 27:85-91. [PMID: 30481956 PMCID: PMC6319554 DOI: 10.4062/biomolther.2018.202] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/04/2018] [Accepted: 11/06/2018] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress is considered a major contributor in the pathogenesis of diabetic neuropathy and in diabetes complications, such as nephropathy and cardiovascular diseases. Diabetic neuropathy, which is the most frequent complications of diabetes, affect sensory, motor, and autonomic nerves. This study aimed to investigate whether 7,8-dihydroxyflavone (7,8-DHF) protects SH-SY5Y neuronal cells against high glucose-induced toxicity. In the current study, we found that diabetic patients exhibited higher lipid peroxidation caused by oxidative stress than healthy subjects. 7,8-DHF exhibits superoxide anion and hydroxyl radical scavenging activities. High glucose-induced toxicity severely damaged SH-SY5Y neuronal cells, causing mitochondrial depolarization; however, 7,8-DHF recovered mitochondrial polarization. Furthermore, 7,8-DHF effectively modulated the expression of pro-apoptotic protein (Bax) and anti-apoptotic protein (Bcl-2) under high glucose, thus inhibiting the activation of caspase signaling pathways. These results indicate that 7,8-DHF has antioxidant effects and protects cells from apoptotic cell death induced by high glucose. Thus, 7,8-DHF may be developed into a promising candidate for the treatment of diabetic neuropathy.
Collapse
Affiliation(s)
- Suk Ju Cho
- Jeju National University School of Medicine and Jeju Research Center for Natural Medicine, Jeju 63243, Republic of Korea
| | - Kyoung Ah Kang
- Jeju National University School of Medicine and Jeju Research Center for Natural Medicine, Jeju 63243, Republic of Korea
| | - Mei Jing Piao
- Jeju National University School of Medicine and Jeju Research Center for Natural Medicine, Jeju 63243, Republic of Korea
| | - Yea Seong Ryu
- Jeju National University School of Medicine and Jeju Research Center for Natural Medicine, Jeju 63243, Republic of Korea
| | | | - Ao Xuan Zhen
- Jeju National University School of Medicine and Jeju Research Center for Natural Medicine, Jeju 63243, Republic of Korea
| | - Yu Jae Hyun
- Jeju National University School of Medicine and Jeju Research Center for Natural Medicine, Jeju 63243, Republic of Korea
| | - Mee Jung Ahn
- Laboratory of Veterinary Anatomy, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Hee Kyoung Kang
- Jeju National University School of Medicine and Jeju Research Center for Natural Medicine, Jeju 63243, Republic of Korea
| | - Jin Won Hyun
- Jeju National University School of Medicine and Jeju Research Center for Natural Medicine, Jeju 63243, Republic of Korea
| |
Collapse
|
23
|
Kobayashi K, Suzuki H. Synapse-selective rapid potentiation of hippocampal synaptic transmission by 7,8-dihydroxyflavone. Neuropsychopharmacol Rep 2018; 38:197-203. [PMID: 30280523 PMCID: PMC7292275 DOI: 10.1002/npr2.12033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 08/29/2018] [Accepted: 09/05/2018] [Indexed: 12/25/2022] Open
Abstract
AIM The identification of 7,8-dihydroxyflavone (DHF) as a small molecule agonist for tropomyosin-related kinase B (TrkB) facilitated understanding of the role of TrkB signaling in regulating higher brain functions. DHF can penetrate the blood-brain barrier after systemic administration and changes the performance of cognitive and emotional behavioral tasks. However, it is poorly understood how DHF modulates neuronal functions at cellular levels. Aiming to understand the cellular basis underlying DHF-induced modifications of the brain functions, we examined the effects of DHF on the hippocampal excitatory synaptic transmission. METHODS Field excitatory postsynaptic potentials were recorded using hippocampal slices prepared from adult male mice. Effects of bath-applied DHF on the synaptic efficacy were examined. RESULTS We found that DHF induced robust synaptic potentiation at the mossy fiber to CA3 synapse. DHF had minimal effects at other hippocampal excitatory synapses or at immature mossy fiber synapse in juvenile mice. The TrkB receptor blockers K252a and ANA-12 did not affect the DHF-induced synaptic potentiation. Drug screening revealed that relatively low concentrations of 2-aminoethoxydiphenylborane blocked the DHF-induced synaptic potentiation. CONCLUSION Our results demonstrate that DHF selectively potentiates hippocampal mossy fiber synaptic transmission via a TrkB receptor-independent mechanism. This novel neuromodulatory effect of DHF may influence higher brain functions by itself or together with the activation of the TrkB receptor. The rapid induction of the potentiation implies its potential importance in the acute behavioral effects of DHF.
Collapse
Affiliation(s)
- Katsunori Kobayashi
- Department of Pharmacology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Hidenori Suzuki
- Department of Pharmacology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| |
Collapse
|
24
|
Man L, Lv X, Du XD, Yin G, Zhu X, Zhang Y, Soares JC, Yang XN, Chen X, Zhang XY. Cognitive impairments and low BDNF serum levels in first-episode drug-naive patients with schizophrenia. Psychiatry Res 2018; 263:1-6. [PMID: 29482040 DOI: 10.1016/j.psychres.2018.02.034] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/24/2018] [Accepted: 02/14/2018] [Indexed: 12/12/2022]
Abstract
Evidence shows that BDNF may regulate activity-dependent forms of synaptic plasticity underlying learning and memory. Previous studies reported low BDNF levels and cognitive impairment in the early stage of schizophrenia. Our current study aimed to explore the association between serum BDNF and cognitive functions in first-episode drug-naïve (FEDN) patients with schizophrenia, which has been under-investigated. We recruited 80 FEDN patients and 80 healthy controls and examined the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and serum BDNF in both groups. Patient psychopathology was assessed using the Positive and Negative Syndrome Scale (PANSS). BDNF levels were significantly lower in patients compared to controls (p < 0.001). The RBANS total score and nearly all indexes (all p < 0.001) except for visuospatial/constructional index (p > 0.05) were significantly lower in patients than controls. No significant correlation was found between BDNF and any index or total scores of RBANS in either patients or healthy controls (all p > 0.05). However, the PANSS negative subscale score were negatively associated with both the immediate memory and language indexes (both p < 0.005). Our findings suggest that excessive cognitive impairments are present in the early stage of schizophrenia. Low BDNF may contribute to the pathogenesis of schizophrenia, but maybe not to its cognitive impairments.
Collapse
Affiliation(s)
- Lijuan Man
- The First Affiliated Hospital, Wenzhou Medical College, Wenzhou, China
| | - Xiaoli Lv
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Xiang-Dong Du
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Guangzhong Yin
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Xiaomin Zhu
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Yingyang Zhang
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, 1941 East Road, Houston, TX, USA
| | - Xu-Na Yang
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China.
| | - Xingshi Chen
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China.
| | - Xiang Yang Zhang
- The First Affiliated Hospital, Wenzhou Medical College, Wenzhou, China; Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, 1941 East Road, Houston, TX, USA.
| |
Collapse
|
25
|
Perez-Rando M, Castillo-Gomez E, Bueno-Fernandez C, Nacher J. The TrkB agonist 7,8-dihydroxyflavone changes the structural dynamics of neocortical pyramidal neurons and improves object recognition in mice. Brain Struct Funct 2018; 223:2393-2408. [PMID: 29500536 DOI: 10.1007/s00429-018-1637-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 02/20/2018] [Indexed: 01/17/2023]
Abstract
BDNF and its receptor TrkB have important roles in neurodevelopment, neural plasticity, learning, and memory. Alterations in TrkB expression have been described in different CNS disorders. Therefore, drugs interacting with TrkB, specially agonists, are promising therapeutic tools. Among them, the recently described 7,8-dihydroxyflavone (DHF), an orally bioactive compound, has been successfully tested in animal models of these diseases. Recent studies have shown the influence of this drug on the structure of pyramidal neurons, specifically on dendritic spine density. However, there is no information yet on how DHF may alter the structural dynamics of these neurons (i.e., real-time study of the addition/elimination of dendritic spines and axonal boutons). To gain knowledge on these effects of DHF, we have performed a real-time analysis of spine and axonal dynamics in pyramidal neurons of barrel cortex, using cranial windows and 2-photon microscopy during a chronic oral treatment with this drug. After confirming TrkB expression in these neurons, we found that DHF increased the gain rates of spines and axonal boutons, as well as improved object recognition memory. These results help to understand how the activation of the BDNF-TrkB system can improve basic behavioral tasks through changes in the structural dynamics of pyramidal neurons. Moreover, they highlight DHF as a promising therapeutic vector for certain brain disorders in which this system is altered.
Collapse
Affiliation(s)
- Marta Perez-Rando
- Neurobiology Unit, Cell Biology Department, Program in Neurosciences and Interdisciplinary Research Structure for Biotechnology and Biomedicine (BIOTECMED), Universitat de València, Dr. Moliner, 50, Burjassot, 46100, Spain
| | - Esther Castillo-Gomez
- Neurobiology Unit, Cell Biology Department, Program in Neurosciences and Interdisciplinary Research Structure for Biotechnology and Biomedicine (BIOTECMED), Universitat de València, Dr. Moliner, 50, Burjassot, 46100, Spain. .,CIBERSAM: Spanish National Network for Research in Mental Health, Valencia, Spain. .,Department of Medicine, School of Medical Sciences, Universitat Jaume I, Vicente Sos Banyat s/n, 12071, Castellón de la Plana, Spain.
| | - Clara Bueno-Fernandez
- Neurobiology Unit, Cell Biology Department, Program in Neurosciences and Interdisciplinary Research Structure for Biotechnology and Biomedicine (BIOTECMED), Universitat de València, Dr. Moliner, 50, Burjassot, 46100, Spain
| | - Juan Nacher
- Neurobiology Unit, Cell Biology Department, Program in Neurosciences and Interdisciplinary Research Structure for Biotechnology and Biomedicine (BIOTECMED), Universitat de València, Dr. Moliner, 50, Burjassot, 46100, Spain. .,CIBERSAM: Spanish National Network for Research in Mental Health, Valencia, Spain. .,Fundación Investigación Hospital Clínico de Valencia, INCLIVA, Valencia, Spain.
| |
Collapse
|
26
|
Zhang XL, McGlothan JL, Miry O, Stansfield KH, Loth MK, Stanton PK, Guilarte TR. From the Cover: 7,8-Dihydroxyflavone Rescues Lead-Induced Impairment of Vesicular Release: A Novel Therapeutic Approach for Lead Intoxicated Children. Toxicol Sci 2018; 161:186-195. [PMID: 29029315 PMCID: PMC5837521 DOI: 10.1093/toxsci/kfx210] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Childhood lead (Pb2+) intoxication is a public health problem of global proportion. Lead exposure during development produces multiple effects on the central nervous system including impaired synapse formation, altered synaptic plasticity, and learning deficits. In primary hippocampal neurons in culture and hippocampal slices, Pb2+ exposure inhibits vesicular release and reduces the number of fast-releasing sites, an effect associated with Pb2+ inhibition of NMDA receptor-mediated trans-synaptic Brain-Derived Neurotrophic Factor (BDNF) signaling. The objective of this study was to determine if activation of TrkB, the cognate receptor for BDNF, would rescue Pb2+-induced impairments of vesicular release. Rats were chronically exposed to Pb2+ prenatally and postnatally until 50 days of age. This chronic Pb2+ exposure paradigm enhanced paired-pulse facilitation of synaptic potentials in Schaffer collateral-CA1 synapses in the hippocampus, a phenomenon indicative of reduced vesicular release probability. Decreased vesicular release probability was confirmed by both mean-variance analysis and direct 2-photon imaging of vesicular release from hippocampal slices of rats exposed to Pb2+in vivo. We also found a Pb2+-induced impairment of calcium influx in Schaffer collateral-CA1 synaptic terminals. Intraperitoneal injections of Pb2+ rats with the TrkB receptor agonist 7,8-dihydroxyflavone (5 mg/kg) for 14-15 days starting at postnatal day 35, reversed all Pb2+-induced impairments of presynaptic transmitter release at Schaffer collateral-CA1 synapses. This study demonstrates for the first time that in vivo pharmacological activation of TrkB receptors by small molecules such as 7,8-dihydroxyflavone can reverse long-term effects of chronic Pb2+ exposure on presynaptic terminals, pointing to TrkB receptor activation as a promising therapeutic intervention in Pb2+-intoxicated children.
Collapse
Affiliation(s)
- Xiao-Lei Zhang
- Department of Cell Biology & Anatomy, New York Medical College, Valhalla, New York 10595
| | - Jennifer L McGlothan
- Department of Environmental & Occupational Health, Robert Stempel College of Public Health & Social Work, Florida International University, Miami, Florida 33199
| | - Omid Miry
- Department of Cell Biology & Anatomy, New York Medical College, Valhalla, New York 10595
| | - Kirstie H Stansfield
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York 10032
| | - Meredith K Loth
- Department of Environmental & Occupational Health, Robert Stempel College of Public Health & Social Work, Florida International University, Miami, Florida 33199
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York 10032
| | - Patric K Stanton
- Department of Cell Biology & Anatomy, New York Medical College, Valhalla, New York 10595
| | - Tomás R Guilarte
- Department of Environmental & Occupational Health, Robert Stempel College of Public Health & Social Work, Florida International University, Miami, Florida 33199
| |
Collapse
|
27
|
Mechanisms of dietary flavonoid action in neuronal function and neuroinflammation. Mol Aspects Med 2017; 61:50-62. [PMID: 29117513 DOI: 10.1016/j.mam.2017.11.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/31/2017] [Accepted: 11/02/2017] [Indexed: 12/15/2022]
Abstract
Flavonoids are a class of plant-derived dietary polyphenols that have attracted attention for their pro-cognitive and anti-inflammatory effects. The diversity of flavonoids and their extensive in vivo metabolism suggest that a variety of cellular targets in the brain are likely to be impacted by flavonoid consumption. Initially characterized as antioxidants, flavonoids are now believed to act directly on neurons and glia via the interaction with major signal transduction cascades, as well as indirectly via interaction with the blood-brain barrier and cerebral vasculature. This review discusses potential mechanisms of flavonoid action in the brain, with a focus on two critical transcription factors: cAMP response element-binding protein (CREB) and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB). To advance beyond current understanding of cellular targets, critical bioavailability studies need to be performed to verify the identity and concentration of flavonoid metabolites reaching the brain after ingestion and to validate that these metabolites are produced not just in rodent models but also in humans. Recent advances in human induced pluripotent stem cell (iPSC) differentiation protocols to generate human neuronal and glial cell types could also provide a unique tool for clinically relevant in vitro investigation of the mechanisms of action of bioavailable flavonoid metabolites in humans.
Collapse
|
28
|
López Hill X, Richeri A, Scorza MC. Clozapine blockade of MK-801-induced learning/memory impairment in the mEPM: Role of 5-HT1A receptors and hippocampal BDNF levels. Physiol Behav 2017; 179:346-352. [DOI: 10.1016/j.physbeh.2017.07.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/05/2017] [Accepted: 07/08/2017] [Indexed: 12/22/2022]
|
29
|
Sun T, Chen S, Huang H, Li T, Yang W, Liu L. Metabolic profile study of 7, 8-dihydroxyflavone in monkey plasma using high performance liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1061-1062:97-102. [PMID: 28715685 DOI: 10.1016/j.jchromb.2017.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/22/2017] [Accepted: 07/02/2017] [Indexed: 01/17/2023]
Abstract
7, 8-Dihydroxyflavone, as a high-affinity tropomyosin-receptor-kinase B agonist, can mimic the physiological actions of brain-derived neurotrophic factor and exert a variety of neurological actions in numerous models including Parkinsońs disease, depression, learning and memory. Nonetheless, a limited number of studies have been focused on its metabolism in mammal and no methodology has been reported for the determination of 7, 8-DHF and its metabolites. Herein, we developed a rapid, sensitive and accurate method using high performance liquid chromatography-tandem mass spectroscopy for the determination of 7, 8-DHF and its metabolites in monkey plasma. The lower limits of quantification for analytes were 0.4-2.0ngmL-1. The intra-day and inter-day precisions (relative standard deviation, %) of analytes were within 11.83%, and the accuracy (relative error, %) ranged from -6.86 to 14.00%. The mean extraction recoveries for analytes were more than 89.14%. This validated method was successfully applied to the metabolic profile study of 7, 8-DHF in monkey plasma. The results indicated that 7, 8-DHF undergoes methylation, glucuronidation and/or sulfation, and the conjugated forms are the main metabolites in monkey plasma. We further demonstrated that methylated 7, 8-DHF can be also conjugated with glucuronidation/sulfation, and the methylation occurs mainly in the 8 position.
Collapse
Affiliation(s)
- Taoping Sun
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sijing Chen
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hao Huang
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tianqing Li
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Wei Yang
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liegang Liu
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| |
Collapse
|
30
|
Xiao W, Ye F, Liu C, Tang X, Li J, Dong H, Sha W, Zhang X. Cognitive impairment in first-episode drug-naïve patients with schizophrenia: Relationships with serum concentrations of brain-derived neurotrophic factor and glial cell line-derived neurotrophic factor. Prog Neuropsychopharmacol Biol Psychiatry 2017; 76:163-168. [PMID: 28342945 DOI: 10.1016/j.pnpbp.2017.03.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 02/25/2017] [Accepted: 03/19/2017] [Indexed: 01/28/2023]
Abstract
OBJECTIVES Evidence suggests that brain-derived neurotrophic factor (BDNF) and glial cell line -derived neurotrophic factor (GDNF) are important in the regulation of synaptic plasticity, which plays a key role in the cognitive processes in psychiatric disorders. Our work aimed at exploring the associations between serum BDNF and GDNF levels and cognitive functions in first-episode drug-naïve (FEDN) patients with schizophrenia. METHODS The BDNF and GDNF levels of 58 FEDN patients and 55 age- and sex-matched healthy controls were measured and test subjects were examined using several neurocognitive tests including the verbal fluency test (VFT), the trail making test (TMT), the digit span test (DST), and the Stroop test. RESULTS Patients performed significantly worse than controls in nearly all neurocognitive performances except the forward subscale part of the DST. BDNF levels were inversely correlated to TMT-part B scores and positively correlated to VFT-action in the FEDN group. GDNF levels showed a positive correlation with VFT-action scores and a negative correlation with TMT-part B scores of these patients. CONCLUSION Current data suggests that cognitive dysfunction widely exists in the early stages of schizophrenia. BDNF and GDNF may be jointly contributed to the pathological mechanisms involved in cognitive impairment in FEDN patients with schizophrenia.
Collapse
Affiliation(s)
- Wenhuan Xiao
- Department of Psychiatry, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou 225003, PR China
| | - Fei Ye
- Department of Psychiatry, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou 225003, PR China
| | - Chunlai Liu
- Department of Psychiatry, Affiliated Kangren Hospital, Ili Kazak Autonomous Prefecture of Xinjiang 835000, PR China
| | - Xiaowei Tang
- Department of Psychiatry, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou 225003, PR China
| | - Jin Li
- Department of Psychiatry, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou 225003, PR China
| | - Hui Dong
- Department of Psychiatry, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou 225003, PR China
| | - Weiwei Sha
- Department of Psychiatry, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou 225003, PR China
| | - Xiaobin Zhang
- Department of Psychiatry, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou 225003, PR China.
| |
Collapse
|
31
|
Chen G, Lin X, Li G, Jiang D, Lib Z, Jiang R, Zhuo C. Risperidone reverses the spatial object recognition impairment and hippocampal BDNF-TrkB signalling system alterations induced by acute MK-801 treatment. Biomed Rep 2017; 6:285-290. [PMID: 28451387 PMCID: PMC5403402 DOI: 10.3892/br.2017.850] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 01/24/2017] [Indexed: 02/01/2023] Open
Abstract
The aim of the present study was to investigate the effects of a commonly-used atypical antipsychotic, risperidone, on alterations in spatial learning and in the hippocampal brain-derived neurotrophic factor (BDNF)-tyrosine receptor kinase B (TrkB) signalling system caused by acute dizocilpine maleate (MK-801) treatment. In experiment 1, adult male Sprague-Dawley rats subjected to acute treatment of either low-dose MK801 (0.1 mg/kg) or normal saline (vehicle) were tested for spatial object recognition and hippocampal expression levels of BDNF, TrkB and the phophorylation of TrkB (p-TrkB). We found that compared to the vehicle, MK-801 treatment impaired spatial object recognition of animals and downregulated the expression levels of p-TrkB. In experiment 2, MK-801- or vehicle-treated animals were further injected with risperidone (0.1 mg/kg) or vehicle before behavioural testing and sacrifice. Of note, we found that risperidone successfully reversed the deleterious effects of MK-801 on spatial object recognition and upregulated the hippocampal BDNF-TrkB signalling system. Collectively, the findings suggest that cognitive deficits from acute N-methyl-D-aspartate receptor blockade may be associated with the hypofunction of hippocampal BDNF-TrkB signalling system and that risperidone was able to reverse these alterations.
Collapse
Affiliation(s)
- Guangdong Chen
- Department of Psychiatry, Wenzhou 7th People's Hospital, Wenzhou, Zhejiang 325000, P.R. China
| | - Xiaodong Lin
- Department of Psychiatry, Wenzhou 7th People's Hospital, Wenzhou, Zhejiang 325000, P.R. China
| | - Gongying Li
- College of Psychiatry, Jining Medical University, Jining, Shandong 272119, P.R. China
| | - Diego Jiang
- Department of Psychiatry, Wenzhou 7th People's Hospital, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhiruo Lib
- College of Psychiatry, Jining Medical University, Jining, Shandong 272119, P.R. China
| | - Ronghuan Jiang
- Department of Psychological Medicine, Chinese PLA (People's Liberation Army) Medical School, Beijing 100853, P.R. China
| | - Chuanjun Zhuo
- Department of Psychiatry, Wenzhou 7th People's Hospital, Wenzhou, Zhejiang 325000, P.R. China
| |
Collapse
|
32
|
Tan Y, Nie S, Zhu W, Liu F, Guo H, Chu J, Cao XB, Jiang X, Zhang Y, Li Y. 7,8-Dihydroxyflavone Ameliorates Cognitive Impairment by Inhibiting Expression of Tau Pathology in ApoE-Knockout Mice. Front Aging Neurosci 2016; 8:287. [PMID: 27965573 PMCID: PMC5126466 DOI: 10.3389/fnagi.2016.00287] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 11/14/2016] [Indexed: 11/13/2022] Open
Abstract
7,8-Dihydroxyflavone (7,8-DHF), a tyrosine kinase B agonist that mimics the neuroprotective properties of brain-derived neurotrophic factor, which can not efficiently deliver into the brain, has been reported to be useful in ameliorating cognitive impairment in many diseases. Researches have indicated that apolipoprotein E-knockout (ApoE-KO) mouse was associated with cognitive alteration via various mechanisms. Our present study investigated the possible mechanisms of cognitive impairment of ApoE-KO mouse fed with western type diet and the protective effects of 7,8-DHF in improving spatial learning and memory in ApoE-KO mouse. Five-weeks-old ApoE-KO mice and C57BL/6 mice were chronically treated with 7,8-DHF (with a dosage of 5 mg/kg) or vehicles orally for 25 weeks, and then subjected to Morris water maze at the age of 30 weeks to evaluate the cognitive performances. Afterward, histology analysis and western blotting were performed. Spatial learning and memory deficits were observed in ApoE-KO mice, which were consistent with higher expression of active-asparaginyl endopeptidase (active-AEP) as well as AEP-derived truncated tau N368 compared with normal group. In addition to that, long-term treatment of 7,8-DHF dramatically ameliorated cognitive decline in ApoE-KO mice, accompanied by the activation in phosphorylated protein kinase B (Akt)/glycogen synthase kinase-3β (GSK-3β) pathway and down-regulated expression of tau S396 and PHF-tau (phosphorylated tau at ser396 and ser404 epitope). These findings suggested that cognitive impairment of ApoE-KO mouse might associate with tau pathology and 7,8-DHF could activate AKT and then phosphorylate its downstream molecule to inhibit expression of abnormal tau, meanwhile, 7,8-DHF could reduce the expression of active-AEP and then inhibit production of truncated tau N368.
Collapse
Affiliation(s)
- Yang Tan
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan, China
| | - Shuke Nie
- Department of Neurology, Renmin Hospital of Wuhan University Wuhan, China
| | - Wende Zhu
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan, China
| | - Fang Liu
- Department of Medicine, LuoHu Chronic Disease Control and Cure Hospital Shenzhen, China
| | - Hailong Guo
- Department of Pharmacy, The Eighth Affiliated Hospital of Sun Yat-sen University Shenzhen, China
| | - Jiewen Chu
- Department of Pharmacy, The Eighth Affiliated Hospital of Sun Yat-sen University Shenzhen, China
| | - Xue B Cao
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan, China
| | - Xingjun Jiang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan, China
| | - Yunjian Zhang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan, China
| | - Yuzhen Li
- Department of Pharmacy, The Eighth Affiliated Hospital of Sun Yat-sen University Shenzhen, China
| |
Collapse
|
33
|
Sanz-García A, Knafo S, Pereda-Pérez I, Esteban JA, Venero C, Armario A. Administration of the TrkB receptor agonist 7,8-dihydroxyflavone prevents traumatic stress-induced spatial memory deficits and changes in synaptic plasticity. Hippocampus 2016; 26:1179-88. [PMID: 27068341 DOI: 10.1002/hipo.22599] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/07/2016] [Indexed: 01/18/2023]
Abstract
Post-traumatic stress disorder (PTSD) occurs after exposure to traumatic situations and it is characterized by cognitive deficits that include impaired explicit memory. The neurobiological bases of such PTSD-associated memory alterations are yet to be elucidated and no satisfactory treatment for them exists. To address this issue, we first studied whether a single exposure of young adult rats (60 days) to immobilization on boards (IMO), a putative model of PTSD, produces long-term behavioral effects (2-8 days) similar to those found in PTSD patients. Subsequently, we investigated whether the administration of the TrkB agonist 7,8-dihydroxyflavone (DHF) 8 h after stress (therapeutic window) ameliorated the PTSD-like effect of IMO and the associated changes in synaptic plasticity. A single IMO exposure induced a spatial memory impairment similar to that found in other animal models of PTSD or in PTSD patients. IMO also increased spine density and long-term potentiation (LTP) in the CA3-CA1 pathway. Significantly, DHF reverted both spatial memory impairment and the increase in LTP, while it produced no effect in the controls. These data provide novel insights into the possible neurobiological substrate for explicit memory impairment in PTSD patients, supporting the idea that the activation of the BDNF/TrkB pathway fulfils a protective role after severe stress. Administration of DHF in the aftermath of a traumatic experience might be relevant to prevent its long-term consequences. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Ancor Sanz-García
- Unitat De Fisiologia Animal (Facultat De Biociències), Universitat Autònoma De Barcelona, 08193 Bellaterra, Barcelona, Spain.,Institut De Neurociències, Universitat Autonòma De Barcelona, 08193 Bellaterra, Barcelona, Spain.,Red De Trastornos Adictivos (RTA), Instituto De Salud Carlos III, Madrid, Spain
| | - Shira Knafo
- IkerBasque Research Professor, Biophysics Unit (Unidad De Biofísica CSIC-UPV/EHU), Leioa, Bizkaia, Spain
| | | | - José A Esteban
- Deparment of Molecular Neurobiology, Centro De Biología Molecular "Severo Ochoa," Consejo Superior De Investigaciones Científicas (CSIC)/Universidad Autónoma De Madrid, Madrid, Spain
| | - César Venero
- Department of Psychobiology, Universidad Nacional De Educación a Distancia, Juan Del Rosal 10, Madrid, 28040, Spain
| | - Antonio Armario
- Unitat De Fisiologia Animal (Facultat De Biociències), Universitat Autònoma De Barcelona, 08193 Bellaterra, Barcelona, Spain.,Institut De Neurociències, Universitat Autonòma De Barcelona, 08193 Bellaterra, Barcelona, Spain.,Red De Trastornos Adictivos (RTA), Instituto De Salud Carlos III, Madrid, Spain
| |
Collapse
|
34
|
Xu J, Kurup P, Baguley TD, Foscue E, Ellman JA, Nairn AC, Lombroso PJ. Inhibition of the tyrosine phosphatase STEP61 restores BDNF expression and reverses motor and cognitive deficits in phencyclidine-treated mice. Cell Mol Life Sci 2015; 73:1503-14. [PMID: 26450419 DOI: 10.1007/s00018-015-2057-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/02/2015] [Accepted: 09/28/2015] [Indexed: 02/07/2023]
Abstract
Brain-derived neurotrophic factor (BDNF) and STriatal-Enriched protein tyrosine Phosphatase 61 (STEP61) have opposing functions in the brain, with BDNF supporting and STEP61 opposing synaptic strengthening. BDNF and STEP61 also exhibit an inverse pattern of expression in a number of brain disorders, including schizophrenia (SZ). NMDAR antagonists such as phencyclidine (PCP) elicit SZ-like symptoms in rodent models and unaffected individuals, and exacerbate psychotic episodes in SZ. Here we characterize the regulation of BDNF expression by STEP61, utilizing PCP-treated cortical culture and PCP-treated mice. PCP-treated cortical neurons showed both an increase in STEP61 levels and a decrease in BDNF expression. The reduction in BDNF expression was prevented by STEP61 knockdown or use of the STEP inhibitor, TC-2153. The PCP-induced increase in STEP61 expression was associated with the inhibition of CREB-dependent BDNF transcription. Similarly, both genetic and pharmacologic inhibition of STEP prevented the PCP-induced reduction in BDNF expression in vivo and normalized PCP-induced hyperlocomotion and cognitive deficits. These results suggest a mechanism by which STEP61 regulates BDNF expression, with implications for cognitive functioning in CNS disorders.
Collapse
Affiliation(s)
- Jian Xu
- Child Study Center, Yale University, 230 S Frontage Rd., New Haven, CT, 06520, USA
| | - Pradeep Kurup
- Child Study Center, Yale University, 230 S Frontage Rd., New Haven, CT, 06520, USA
| | - Tyler D Baguley
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT, 06520, USA
| | - Ethan Foscue
- Child Study Center, Yale University, 230 S Frontage Rd., New Haven, CT, 06520, USA
| | - Jonathan A Ellman
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT, 06520, USA
| | - Angus C Nairn
- Department of Psychiatry, Yale University, 300 George St., New Haven, CT, 06520, USA
| | - Paul J Lombroso
- Child Study Center, Yale University, 230 S Frontage Rd., New Haven, CT, 06520, USA. .,Department of Psychiatry, Yale University, 300 George St., New Haven, CT, 06520, USA. .,Department of Neurobiology, Yale University, 333 Cedar St., New Haven, CT, 06520, USA.
| |
Collapse
|
35
|
Feng P, Akladious AA, Hu Y, Raslan Y, Feng J, Smith PJ. 7,8-Dihydroxyflavone reduces sleep during dark phase and suppresses orexin A but not orexin B in mice. J Psychiatr Res 2015; 69:110-9. [PMID: 26343602 DOI: 10.1016/j.jpsychires.2015.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/22/2015] [Accepted: 08/03/2015] [Indexed: 12/22/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) binds to Tropomyosin-receptor-kinase B (TrkB) receptors that regulate synaptic strength and plasticity in the mammalian nervous system. 7,8-Dihydroxyflavone (DHF) is a recently identified small molecule Trk B agonist that has been reported to ameliorate depression, attenuate the fear response, improve memory consolidation, and exert neuroprotective effects. Poor and disturbed sleep remains a symptom of major depressive disorder and most current antidepressants affect sleep. Therefore, we conducted sleep/wake recordings and concomitant measurement of brain orexins, endogenous peptides that suppress sleep, in mice for this study. Baseline polysomnograph recording was performed for 24 h followed by treatment with either 5 mg/kg of DHF or vehicle at the beginning of the dark phase. Animals were sacrificed the following day, one hour after the final treatment with DHF. Orexin A and B were quantified using ELISA and radioimmunoassay, respectively. Total sleep was significantly decreased in the DHF group, 4 h after drug administration in the dark phase, when compared with vehicle-treated animals. This difference was due to a significant decrease of non-rapid eye movement sleep, but not rapid eye movement sleep. DHF increased power of alpha and sigma bands but suppressed power of gamma band during sleep in dark phase. Interestingly, hypothalamic levels of orexin A were also significantly decreased in the DHF group (97 pg/mg) when compared with the vehicle-treated group (132 pg/mg). However, no significant differences of orexin B were observed between groups. Additionally, no change was found in immobility tests.
Collapse
Affiliation(s)
- Pingfu Feng
- Louis Stokes Cleveland DVA Medical Center, USA; Division of Pulmonary, Critical Care and Sleep Medicine, Case Western Reserve University, Cleveland, OH, USA.
| | | | - Yufen Hu
- Louis Stokes Cleveland DVA Medical Center, USA; Division of Pulmonary, Critical Care and Sleep Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Yousef Raslan
- Louis Stokes Cleveland DVA Medical Center, USA; Division of Pulmonary, Critical Care and Sleep Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - James Feng
- Louis Stokes Cleveland DVA Medical Center, USA
| | - Phillip J Smith
- Division of Pulmonary, Critical Care and Sleep Medicine, Case Western Reserve University, Cleveland, OH, USA
| |
Collapse
|
36
|
Du X, Hill R. 7,8-Dihydroxyflavone as a pro-neurotrophic treatment for neurodevelopmental disorders. Neurochem Int 2015. [DOI: 10.1016/j.neuint.2015.07.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
37
|
Xu J, Kurup P, Azkona G, Baguley TD, Saavedra A, Nairn AC, Ellman JA, Pérez-Navarro E, Lombroso PJ. Down-regulation of BDNF in cell and animal models increases striatal-enriched protein tyrosine phosphatase 61 (STEP61 ) levels. J Neurochem 2015; 136:285-94. [PMID: 26316048 DOI: 10.1111/jnc.13295] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/12/2015] [Accepted: 08/13/2015] [Indexed: 12/23/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) regulates synaptic strengthening and memory consolidation, and altered BDNF expression is implicated in a number of neuropsychiatric and neurodegenerative disorders. BDNF potentiates N-methyl-D-aspartate receptor function through activation of Fyn and ERK1/2. STriatal-Enriched protein tyrosine Phosphatase (STEP) is also implicated in many of the same disorders as BDNF but, in contrast to BDNF, STEP opposes the development of synaptic strengthening. STEP-mediated dephosphorylation of the NMDA receptor subunit GluN2B promotes internalization of GluN2B-containing NMDA receptors, while dephosphorylation of the kinases Fyn, Pyk2, and ERK1/2 leads to their inactivation. Thus, STEP and BDNF have opposing functions. In this study, we demonstrate that manipulation of BDNF expression has a reciprocal effect on STEP61 levels. Reduced BDNF signaling leads to elevation of STEP61 both in BDNF(+/-) mice and after acute BDNF knockdown in cortical cultures. Moreover, a newly identified STEP inhibitor reverses the biochemical and motor abnormalities in BDNF(+/-) mice. In contrast, increased BDNF signaling upon treatment with a tropomyosin receptor kinase B agonist results in degradation of STEP61 and a subsequent increase in the tyrosine phosphorylation of STEP substrates in cultured neurons and in mouse frontal cortex. These findings indicate that BDNF-tropomyosin receptor kinase B signaling leads to degradation of STEP61 , while decreased BDNF expression results in increased STEP61 activity. A better understanding of the opposing interaction between STEP and BDNF in normal cognitive functions and in neuropsychiatric disorders will hopefully lead to better therapeutic strategies. Altered expression of BDNF and STEP61 has been implicated in several neurological disorders. BDNF and STEP61 are known to regulate synaptic strengthening, but in opposite directions. Here, we report that reduced BDNF signaling leads to elevation of STEP61 both in BDNF(+/-) mice and after acute BDNF knockdown in cortical cultures. In contrast, activation of TrkB receptor results in the degradation of STEP61 and reverses hyperlocomotor activity in BDNF(+/-) mice. Moreover, inhibition of STEP61 by TC-2153 is sufficient to enhance the Tyr phosphorylation of STEP substrates and also reverses hyperlocomotion in BDNF(+/-) mice. These findings give us a better understanding of the regulation of STEP61 by BDNF in normal cognitive functions and in neuropsychiatric disorders.
Collapse
Affiliation(s)
- Jian Xu
- Yale University School of Medicine, New Haven, Connecticut, USA
| | - Pradeep Kurup
- Yale University School of Medicine, New Haven, Connecticut, USA
| | - Garikoitz Azkona
- Departament de Biologia Cel·lular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Spain
| | - Tyler D Baguley
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Ana Saavedra
- Departament de Biologia Cel·lular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Spain
| | - Angus C Nairn
- Yale University School of Medicine, New Haven, Connecticut, USA
| | - Jonathan A Ellman
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Esther Pérez-Navarro
- Departament de Biologia Cel·lular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Spain
| | - Paul J Lombroso
- Yale University School of Medicine, New Haven, Connecticut, USA
| |
Collapse
|
38
|
The mechanisms of action of flavonoids in the brain: Direct versus indirect effects. Neurochem Int 2015; 89:126-39. [PMID: 26260546 DOI: 10.1016/j.neuint.2015.08.002] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/04/2015] [Accepted: 08/05/2015] [Indexed: 02/01/2023]
Abstract
The projected increase in the incidence of dementia in the population highlights the urgent need for a more comprehensive understanding of how different aspects of lifestyle, in particular exercise and diet, may affect neural function and consequent cognitive performance throughout the life course. In this regard, flavonoids, found in a variety of fruits, vegetables and derived beverages, have been identified as a group of promising bioactive compounds capable of influencing different aspects of brain function, including cerebrovascular blood flow and synaptic plasticity, both resulting in improvements in learning and memory in mammalian species. However, the precise mechanisms by which flavonoids exert these actions are yet to be fully established, although accumulating data indicate an ability to interact with neuronal receptors and kinase signaling pathways which are key to neuronal activation and communication and synaptic strengthening. Alternatively or concurrently, there is also compelling evidence derived from human clinical studies suggesting that flavonoids can positively affect peripheral and cerebrovascular blood flow, which may be an indirect effective mechanism by which dietary flavonoids can impact on brain health and cognition. The current review examines the beneficial effects of flavonoids on both human and animal brain function and attempts to address and link direct and indirect actions of flavonoids and their derivatives within the central nervous system (CNS).
Collapse
|
39
|
Abstract
The global rise in the prevalence of obesity and associated co-morbidities such as type 2 diabetes, cardiovascular disease, and cancer represents a major public health concern. The biological response to increased consumption of palatable foods or a reduction in energy expenditure is highly variable between individuals. A more detailed mechanistic understanding of the molecular, physiological, and behavioral pathways involved in the development of obesity in susceptible individuals is critical for identifying effective mechanism-based preventative and therapeutic interventions.
Collapse
Affiliation(s)
- Agatha A van der Klaauw
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK
| | - I Sadaf Farooqi
- University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
| |
Collapse
|
40
|
Yang YJ, Chen HB, Wei B, Wang W, Zhou PL, Zhan JQ, Hu MR, Yan K, Hu B, Yu B. Cognitive decline is associated with reduced surface GluR1 expression in the hippocampus of aged rats. Neurosci Lett 2015; 591:176-181. [DOI: 10.1016/j.neulet.2015.02.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 01/27/2015] [Accepted: 02/13/2015] [Indexed: 10/24/2022]
|