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Bastioli G, Arnold JC, Mancini M, Mar AC, Gamallo-Lana B, Saadipour K, Chao MV, Rice ME. Voluntary Exercise Boosts Striatal Dopamine Release: Evidence for the Necessary and Sufficient Role of BDNF. J Neurosci 2022; 42:4725-4736. [PMID: 35577554 PMCID: PMC9186798 DOI: 10.1523/jneurosci.2273-21.2022] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 03/09/2022] [Accepted: 04/10/2022] [Indexed: 11/21/2022] Open
Abstract
Physical exercise improves motor performance in individuals with Parkinson's disease and elevates mood in those with depression. Although underlying factors have not been identified, clues arise from previous studies showing a link between cognitive benefits of exercise and increases in brain-derived neurotrophic factor (BDNF). Here, we investigated the influence of voluntary wheel-running exercise on BDNF levels in the striatum of young male wild-type (WT) mice, and on the striatal release of a key motor-system transmitter, dopamine (DA). Mice were allowed unlimited access to a freely rotating wheel (runners) or a locked wheel (controls) for 30 d. Electrically evoked DA release was quantified in ex vivo corticostriatal slices from these animals using fast-scan cyclic voltammetry. We found that exercise increased BDNF levels in dorsal striatum (dStr) and increased DA release in dStr and in nucleus accumbens core and shell. Increased DA release was independent of striatal acetylcholine (ACh), and persisted after a week of rest. We tested a role for BDNF in the influence of exercise on DA release using mice that were heterozygous for BDNF deletion (BDNF+/-). In contrast to WT mice, evoked DA release did not differ between BDNF+/- runners and controls. Complementary pharmacological studies using a tropomyosin receptor kinase B (TrkB) agonist in WT mouse slices showed that TrkB receptor activation also increased evoked DA release throughout striatum in an ACh-independent manner. Together, these data support a causal role for BDNF in exercise-enhanced striatal DA release and provide mechanistic insight into the beneficial effects of exercise in neuropsychiatric disorders, including Parkinson's, depression, and anxiety.SIGNIFICANCE STATEMENT Exercise has been shown to improve movement and cognition in humans and rodents. Here, we report that voluntary exercise for 30 d leads to an increase in evoked DA release throughout the striatum and an increase in BDNF in the dorsal (motor) striatum. The increase in DA release appears to require BDNF, indicated by the absence of DA release enhancement with running in BDNF+/- mice. Activation of BDNF receptors using a pharmacological agonist was also shown to boost DA release. Together, these data support a necessary and sufficient role for BDNF in exercise-enhanced DA release and provide mechanistic insight into the reported benefits of exercise in individuals with dopamine-linked neuropsychiatric disorders, including Parkinson's disease and depression.
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Affiliation(s)
| | - Jennifer C Arnold
- Neurosurgery, New York University Grossman School of Medicine, New York, New York 10016
| | | | - Adam C Mar
- Departments of Neuroscience and Physiology and
| | | | - Khalil Saadipour
- Skirball Institute of Biomolecular Medicine, New York University Grossman School of Medicine, New York, New York 10016
| | - Moses V Chao
- Skirball Institute of Biomolecular Medicine, New York University Grossman School of Medicine, New York, New York 10016
| | - Margaret E Rice
- Departments of Neuroscience and Physiology and
- Neurosurgery, New York University Grossman School of Medicine, New York, New York 10016
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2
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Mitre M, Saadipour K, Williams K, Khatri L, Froemke RC, Chao MV. Transactivation of TrkB Receptors by Oxytocin and Its G Protein-Coupled Receptor. Front Mol Neurosci 2022; 15:891537. [PMID: 35721318 PMCID: PMC9201241 DOI: 10.3389/fnmol.2022.891537] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/11/2022] [Indexed: 12/28/2022] Open
Abstract
Brain-derived Neurotrophic Factor (BDNF) binds to the TrkB tyrosine kinase receptor, which dictates the sensitivity of neurons to BDNF. A unique feature of TrkB is the ability to be activated by small molecules in a process called transactivation. Here we report that the brain neuropeptide oxytocin increases BDNF TrkB activity in primary cortical neurons and in the mammalian neocortex during postnatal development. Oxytocin produces its effects through a G protein-coupled receptor (GPCR), however, the receptor signaling events that account for its actions have not been fully defined. We find oxytocin rapidly transactivates TrkB receptors in bath application of acute brain slices of 2-week-old mice and in primary cortical culture by increasing TrkB receptor tyrosine phosphorylation. The effects of oxytocin signaling could be distinguished from the related vasopressin receptor. The transactivation of TrkB receptors by oxytocin enhances the clustering of gephyrin, a scaffold protein responsible to coordinate inhibitory responses. Because oxytocin displays pro-social functions in maternal care, cognition, and social attachment, it is currently a focus of therapeutic strategies in autism spectrum disorders. Interestingly, oxytocin and BDNF are both implicated in the pathophysiology of depression, schizophrenia, anxiety, and cognition. These results imply that oxytocin may rely upon crosstalk with BDNF signaling to facilitate its actions through receptor transactivation.
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Affiliation(s)
- Mariela Mitre
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
- Departments of Cell Biology, Psychiatry, New York University Langone Medical Center, New York, NY, United States
- Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY, United States
- Department of Otolaryngology, New York University Langone Medical Center, New York, NY, United States
- Center for Neural Science, New York University, New York, NY, United States
| | - Khalil Saadipour
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
| | - Kevin Williams
- Departments of Biology and Psychology, University of Georgia, Athens, GA, United States
| | - Latika Khatri
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
| | - Robert C. Froemke
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
- Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY, United States
- Department of Otolaryngology, New York University Langone Medical Center, New York, NY, United States
- Center for Neural Science, New York University, New York, NY, United States
| | - Moses V. Chao
- Departments of Cell Biology, Neuroscience & Physiology, and Psychiatry, Skirball Institute for Biomolecular Medicine, New York, NY, United States
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, United States
- Departments of Cell Biology, Psychiatry, New York University Langone Medical Center, New York, NY, United States
- Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY, United States
- Center for Neural Science, New York University, New York, NY, United States
- *Correspondence: Moses V. Chao
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3
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Pandya UM, Manzanares MA, Tellechea A, Egbuta C, Daubriac J, Jimenez-Jaramillo C, Samra F, Fredston-Hermann A, Saadipour K, Gold LI. Calreticulin exploits TGF-β for extracellular matrix induction engineering a tissue regenerative process. FASEB J 2020; 34:15849-15874. [PMID: 33015849 DOI: 10.1096/fj.202001161r] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 09/10/2020] [Accepted: 09/14/2020] [Indexed: 12/17/2022]
Abstract
Topical application of extracellular calreticulin (eCRT), an ER chaperone protein, in animal models enhances wound healing and induces tissue regeneration evidenced by epidermal appendage neogenesis and lack of scarring. In addition to chemoattraction of cells critical to the wound healing process, eCRT induces abundant neo-dermal extracellular matrix (ECM) formation by 3 days post-wounding. The purpose of this study was to determine the mechanisms involved in eCRT induction of ECM. In vitro, eCRT strongly induces collagen I, fibronectin, elastin, α-smooth muscle actin in human adult dermal (HDFs) and neonatal fibroblasts (HFFs) mainly via TGF-β canonical signaling and Smad2/3 activation; RAP, an inhibitor of LRP1 blocked eCRT ECM induction. Conversely, eCRT induction of α5 and β1 integrins was not mediated by TGF-β signaling nor inhibited by RAP. Whereas eCRT strongly induces ECM and integrin α5 proteins in K41 wild-type mouse embryo fibroblasts (MEFs), CRT null MEFs were unresponsive. The data show that eCRT induces the synthesis and release of TGF-β3 first via LRP1 or other receptor signaling and later induces ECM proteins via LRP1 signaling subsequently initiating TGF-β receptor signaling for intracellular CRT (iCRT)-dependent induction of TGF-β1 and ECM proteins. In addition, TGF-β1 induces 2-3-fold higher level of ECM proteins than eCRT. Whereas eCRT and iCRT converge for ECM induction, we propose that eCRT attenuates TGF-β-mediated fibrosis/scarring to achieve tissue regeneration.
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Affiliation(s)
- Unnati M Pandya
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Miguel A Manzanares
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Ana Tellechea
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Chinaza Egbuta
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Julien Daubriac
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Couger Jimenez-Jaramillo
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Fares Samra
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Alexa Fredston-Hermann
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Khalil Saadipour
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA
| | - Leslie I Gold
- Division of Translational Medicine, Department of Medicine, New York University School of Medicine-Langone Health, New York, NY, USA.,Pathology Department, New York University School of Medicine-Langone Health, New York, NY, USA
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4
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Oh Y, Lai JSY, Mills HJ, Erdjument-Bromage H, Giammarinaro B, Saadipour K, Wang JG, Abu F, Neubert TA, Suh GSB. A glucose-sensing neuron pair regulates insulin and glucagon in Drosophila. Nature 2019; 574:559-564. [PMID: 31645735 PMCID: PMC6857815 DOI: 10.1038/s41586-019-1675-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 09/16/2019] [Indexed: 01/08/2023]
Abstract
Although glucose-sensing neurons were identified more than 50 years ago, the physiological role of glucose sensing in metazoans remains unclear. Here we identify a pair of glucose-sensing neurons with bifurcated axons in the brain of Drosophila. One axon branch projects to insulin-producing cells to trigger the release of Drosophila insulin-like peptide 2 (dilp2) and the other extends to adipokinetic hormone (AKH)-producing cells to inhibit secretion of AKH, the fly analogue of glucagon. These axonal branches undergo synaptic remodelling in response to changes in their internal energy status. Silencing of these glucose-sensing neurons largely disabled the response of insulin-producing cells to glucose and dilp2 secretion, disinhibited AKH secretion in corpora cardiaca and caused hyperglycaemia, a hallmark feature of diabetes mellitus. We propose that these glucose-sensing neurons maintain glucose homeostasis by promoting the secretion of dilp2 and suppressing the release of AKH when haemolymph glucose levels are high.
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Affiliation(s)
- Yangkyun Oh
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
| | - Jason Sih-Yu Lai
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
- QPS-Qualitix Taiwan, Ren-Ai Road, Taipei, Taiwan
| | - Holly J Mills
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
- Ascend Public Charter Schools, New York, NY, USA
| | - Hediye Erdjument-Bromage
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
| | - Benno Giammarinaro
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
- Vision Sciences Graduate Program, School of Optometry, UC Berkeley, Berkeley, CA, USA
| | - Khalil Saadipour
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
| | - Justin G Wang
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
- Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Farhan Abu
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
- Department of Genetics and Development, Columbia University, New York, NY, USA
| | - Thomas A Neubert
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA
| | - Greg S B Suh
- Skirball Institute of Biomolecular Medicine, Department of Cell Biology, Neuroscience Institute, New York University School of Medicine, New York, NY, USA.
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea.
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5
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Saadipour K, Tiberi A, Lombardo S, Grajales E, Montroull L, Mañucat-Tan NB, LaFrancois J, Cammer M, Mathews PM, Scharfman HE, Liao FF, Friedman WJ, Zhou XF, Tesco G, Chao MV. Regulation of BACE1 expression after injury is linked to the p75 neurotrophin receptor. Mol Cell Neurosci 2019; 99:103395. [PMID: 31422108 DOI: 10.1016/j.mcn.2019.103395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/24/2019] [Accepted: 08/08/2019] [Indexed: 12/25/2022] Open
Abstract
BACE1 is a transmembrane aspartic protease that cleaves various substrates and it is required for normal brain function. BACE1 expression is high during early development, but it is reduced in adulthood. Under conditions of stress and injury, BACE1 levels are increased; however, the underlying mechanisms that drive BACE1 elevation are not well understood. One mechanism associated with brain injury is the activation of injurious p75 neurotrophin receptor (p75), which can trigger pathological signals. Here we report that within 72 h after controlled cortical impact (CCI) or laser injury, BACE1 and p75 are increased and tightly co-expressed in cortical neurons of mouse brain. Additionally, BACE1 is not up-regulated in p75 null mice in response to focal cortical injury, while p75 over-expression results in BACE1 augmentation in HEK-293 and SY5Y cell lines. A luciferase assay conducted in SY5Y cell line revealed that BACE1 expression is regulated at the transcriptional level in response to p75 transfection. Interestingly, this effect does not appear to be dependent upon p75 ligands including mature and pro-neurotrophins. In addition, BACE1 activity on amyloid precursor protein (APP) is enhanced in SY5Y-APP cells transfected with a p75 construct. Lastly, we found that the activation of c-jun n-terminal kinase (JNK) by p75 contributes to BACE1 up-regulation. This study explores how two injury-induced molecules are intimately connected and suggests a potential link between p75 signaling and the expression of BACE1 after brain injury.
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Affiliation(s)
- Khalil Saadipour
- Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016, USA.
| | - Alexia Tiberi
- Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016, USA; Bio@SNS Laboratory, Scuola Normale Superiore, Piazza dei Cavalieri 7, Pisa, 56126, Italy
| | - Sylvia Lombardo
- Alzheimer's Disease Research Laboratory, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA, 02111, USA
| | - Elena Grajales
- Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016, USA
| | - Laura Montroull
- Department of Biological Sciences, Rutgers Life Sciences Center, Rutgers University, Newark, NJ 07102, USA
| | - Noralyn B Mañucat-Tan
- School of Pharmacy and Medical Sciences, Sansom Institute, University of South Australia, Adelaide, South Australia, 5000, Australia
| | - John LaFrancois
- The Nathan Kline Institute of Psychiatric Research, Center for Dementia Research, Orangeburg, NY 10962, USA
| | - Michael Cammer
- DART Microscopy Laboratory, NYU Langone Medical Center, New York, NY 10016, USA
| | - Paul M Mathews
- The Nathan Kline Institute of Psychiatric Research, Center for Dementia Research, Orangeburg, NY 10962, USA
| | - Helen E Scharfman
- The Nathan Kline Institute of Psychiatric Research, Center for Dementia Research, Orangeburg, NY 10962, USA
| | - Francesca-Fang Liao
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, Tennessee 38163, USA
| | - Wilma J Friedman
- Department of Biological Sciences, Rutgers Life Sciences Center, Rutgers University, Newark, NJ 07102, USA
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences, Sansom Institute, University of South Australia, Adelaide, South Australia, 5000, Australia
| | - Giueseppina Tesco
- Alzheimer's Disease Research Laboratory, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA, 02111, USA
| | - Moses V Chao
- Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016, USA.
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Mañucat-Tan NB, Saadipour K, Wang YJ, Bobrovskaya L, Zhou XF. Correction to: Cellular Trafficking of Amyloid Precursor Protein in Amyloidogenesis Physiological and Pathological Significance. Mol Neurobiol 2018; 56:831-832. [PMID: 29948951 DOI: 10.1007/s12035-018-1189-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The original version of this article unfortunately contained mistake. The old version of Fig. 3 was published.
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Affiliation(s)
- Noralyn Basco Mañucat-Tan
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, 5000, Australia.
| | - Khalil Saadipour
- Departments of Cell Biology, Physiology and Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone School of Medicine, New York, NY, USA
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Larisa Bobrovskaya
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, 5000, Australia
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, 5000, Australia.
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7
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Mañucat-Tan NB, Saadipour K, Wang YJ, Bobrovskaya L, Zhou XF. Cellular Trafficking of Amyloid Precursor Protein in Amyloidogenesis Physiological and Pathological Significance. Mol Neurobiol 2018; 56:812-830. [PMID: 29797184 DOI: 10.1007/s12035-018-1106-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 05/03/2018] [Indexed: 12/26/2022]
Abstract
The accumulation of excess intracellular or extracellular amyloid beta (Aβ) is one of the key pathological events in Alzheimer's disease (AD). Aβ is generated from the cleavage of amyloid precursor protein (APP) by beta secretase-1 (BACE1) and gamma secretase (γ-secretase) within the cells. The endocytic trafficking of APP facilitates amyloidogenesis while at the cell surface, APP is predominantly processed in a non-amyloidogenic manner. Several adaptor proteins bind to both APP and BACE1, regulating their trafficking and recycling along the secretory and endocytic pathways. The phosphorylation of APP at Thr668 and BACE1 at Ser498, also influence their trafficking. Neurotrophins and proneurotrophins also influence APP trafficking through their receptors. In this review, we describe the molecular trafficking pathways of APP and BACE1 that lead to Aβ generation, the involvement of different signaling molecules or adaptor proteins regulating APP and BACE1 subcellular localization. We have also discussed how neurotrophins could modulate amyloidogenesis through their receptors.
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Affiliation(s)
- Noralyn Basco Mañucat-Tan
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, 5000, Australia.
| | - Khalil Saadipour
- Departments of Cell Biology, Physiology and Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone School of Medicine, New York, NY, USA
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Larisa Bobrovskaya
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, 5000, Australia
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, 5000, Australia.
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Saadipour K, Mañucat-Tan NB, Lim Y, Keating DJ, Smith KS, Zhong JH, Liao H, Bobrovskaya L, Wang YJ, Chao MV, Zhou XF. p75 neurotrophin receptor interacts with and promotes BACE1 localization in endosomes aggravating amyloidogenesis. J Neurochem 2018; 144:302-317. [PMID: 28869759 DOI: 10.1111/jnc.14206] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/17/2017] [Accepted: 08/29/2017] [Indexed: 12/27/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by a progressive deposition of amyloid beta (Aβ) and dysregulation of neurotrophic signaling, causing synaptic dysfunction, loss of memory, and cell death. The expression of p75 neurotrophin receptor is elevated in the brain of AD patients, suggesting its involvement in this disease. However, the exact mechanism of its action is not yet clear. Here, we show that p75 interacts with beta-site amyloid precursor protein cleaving enzyme-1 (BACE1), and this interaction is enhanced in the presence of Aβ. Our results suggest that the colocalization of BACE1 and amyloid precursor protein (APP) is increased in the presence of both Aβ and p75 in cortical neurons. In addition, the localization of APP and BACE1 in early endosomes is increased in the presence of Aβ and p75. An increased phosphorylation of APP-Thr668 and BACE1-Ser498 by c-Jun N-terminal kinase (JNK) in the presence of Aβ and p75 could be responsible for this localization. In conclusion, our study proposes a potential involvement in amyloidogenesis for p75, which may represent a future therapeutic target for AD. Cover Image for this Issue: doi. 10.1111/jnc.14163.
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Affiliation(s)
- Khalil Saadipour
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia
- Department of Human Physiology, Centre for Neuroscience, Flinders University, Adelaide, South Australia
- Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone School of Medicine, New York, NY, USA
| | - Noralyn B Mañucat-Tan
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia
| | - Yoon Lim
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia
| | - Damien J Keating
- Department of Human Physiology, Centre for Neuroscience, Flinders University, Adelaide, South Australia
| | - Kevin S Smith
- Department of Human Physiology, Centre for Neuroscience, Flinders University, Adelaide, South Australia
| | - Jin-Hua Zhong
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia
| | - Hong Liao
- New Drug Screening Centre, China Pharmaceutical University, Nanjing, China
| | - Larisa Bobrovskaya
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Moses V Chao
- Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone School of Medicine, New York, NY, USA
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia
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9
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Ruan CS, Liu J, Yang M, Saadipour K, Zeng YQ, Liao H, Wang YJ, Bobrovskaya L, Zhou XF. Sortilin inhibits amyloid pathology by regulating non-specific degradation of APP. Exp Neurol 2017; 299:75-85. [PMID: 29056359 DOI: 10.1016/j.expneurol.2017.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 10/04/2017] [Accepted: 10/17/2017] [Indexed: 12/21/2022]
Abstract
Amyloid plaque is one of the hallmarks of Alzheimer's disease (AD). The key component beta-amyloid (Aβ) is generated via proteolytic processing of amyloid precursor protein (APP). Sortilin (encoded by the gene Sort1) is a vacuolar protein sorting 10 protein domain-containing receptor, which is up-regulated in the brain of AD, colocalizes with amyloid plaques and interacts with APP. However, its role in amyloidogenesis remains unclear. In this study, we first found that the protein level of sortilin was up-regulated in the neocortex of aged (7 and 9months old) but not young (2 and 5months old) AD mice (APP/PS1). 9months old APP/PS1 transgenic mice with Sort1 gene knockout showed increased amyloid pathology in the brain; and this phenotype was rescued by intrahippocampal injection of AAV-hSORT1. Moreover, the 9months old APP/PS1 mice without Sort1 also displayed a decreased number of neurons and increased astrocyte activation in the hippocampus. In addition, the present study showed that the intracellular domain of sortilin was involved in the regulation of the non-specific degradation of APP. Together, our findings indicate that sortilin is a beneficial protein for the reduction of amyloid pathology in APP/PS1 mice by promoting APP degradation.
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Affiliation(s)
- Chun-Sheng Ruan
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Molecular and Clinical Medicine, Kunming Medical University, Kunming 650500, China.
| | - Jia Liu
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Miao Yang
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Khalil Saadipour
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Yue-Qin Zeng
- Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Molecular and Clinical Medicine, Kunming Medical University, Kunming 650500, China
| | - Hong Liao
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Larisa Bobrovskaya
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia, Adelaide, SA 5000, Australia.
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10
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Saadipour K, MacLean M, Pirkle S, Ali S, Lopez-Redondo ML, Stokes DL, Chao MV. The transmembrane domain of the p75 neurotrophin receptor stimulates phosphorylation of the TrkB tyrosine kinase receptor. J Biol Chem 2017; 292:16594-16604. [PMID: 28821608 DOI: 10.1074/jbc.m117.788729] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/31/2017] [Indexed: 01/19/2023] Open
Abstract
The function of protein products generated from intramembraneous cleavage by the γ-secretase complex is not well defined. The γ-secretase complex is responsible for the cleavage of several transmembrane proteins, most notably the amyloid precursor protein that results in Aβ, a transmembrane (TM) peptide. Another protein that undergoes very similar γ-secretase cleavage is the p75 neurotrophin receptor. However, the fate of the cleaved p75 TM domain is unknown. p75 neurotrophin receptor is highly expressed during early neuronal development and regulates survival and process formation of neurons. Here, we report that the p75 TM can stimulate the phosphorylation of TrkB (tyrosine kinase receptor B). In vitro phosphorylation experiments indicated that a peptide representing p75 TM increases TrkB phosphorylation in a dose- and time-dependent manner. Moreover, mutagenesis analyses revealed that a valine residue at position 264 in the rat p75 neurotrophin receptor is necessary for the ability of p75 TM to induce TrkB phosphorylation. Because this residue is just before the γ-secretase cleavage site, we then investigated whether the p75(αγ) peptide, which is a product of both α- and γ-cleavage events, could also induce TrkB phosphorylation. Experiments using TM domains from other receptors, EGFR and FGFR1, failed to stimulate TrkB phosphorylation. Co-immunoprecipitation and biochemical fractionation data suggested that p75 TM stimulates TrkB phosphorylation at the cell membrane. Altogether, our results suggest that TrkB activation by p75(αγ) peptide may be enhanced in situations where the levels of the p75 receptor are increased, such as during brain injury, Alzheimer's disease, and epilepsy.
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Affiliation(s)
- Khalil Saadipour
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Michael MacLean
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Sean Pirkle
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Solav Ali
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Maria-Luisa Lopez-Redondo
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - David L Stokes
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Moses V Chao
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
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11
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Abstract
Immunity has been suggested to play crucial roles in the pathogenesis of Alzheimer's disease (AD). The triggering receptor expressed on myeloid cells-1 (TREM1), a member of the immunoglobulin superfamily of receptors, is widely expressed in monocytes and microglia. On the other hand, TREM1 variant, rs6910730G, is reported to associate with AD pathology; however, the exact mechanism is not yet clear. Since phagocytosis of Aβ by monocytes enhances Aβ clearance and attenuates AD pathogenesis, Jiang et al. has investigated if TREM1 can modulate Aβ phagocytosis and degradation by monocytes in the central nervous system (CNS). They found that TREM1 facilitates microglial Aβ phagocytosis while rs6910730G impairs this function and exacerbates AD pathogenesis. These findings suggest that TREM1 can be implemented investigated as a potential therapeutic target in AD.
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Affiliation(s)
- Khalil Saadipour
- Department of Cell Biology, Physiology & Neuroscience, Skirball Institute of Bimolecular Medicine, New York University Langone Medical Center, New York, NY, 10016, USA.
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12
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Saadipour K, Lim Y, Keating D, Wang Y, Zhong J, Wang Y, Zhou X. P3‐002: AB INDUCES BACE1 UP‐REGULATION AND ENHANCES APP PROCESSING THROUGH CROSS‐TALK WITH P75NTR. Alzheimers Dement 2014. [DOI: 10.1016/j.jalz.2014.05.1089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - Yoon Lim
- University of South AustraliaAdelaideAustralia
| | | | | | | | | | - Xin‐Fu Zhou
- University of South AustraliaAdelaideAustralia
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13
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Saadipour K, Yang M, Lim Y, Georgiou K, Sun Y, Keating D, Liu J, Wang YR, Gai WP, Zhong JH, Wang YJ, Zhou XF. Amyloid beta1-42
(Aβ42
) up-regulates the expression of sortilin via the p75NTR
/RhoA signaling pathway. J Neurochem 2013; 127:152-62. [DOI: 10.1111/jnc.12383] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 07/04/2013] [Accepted: 07/05/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Khalil Saadipour
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
- Department of Human Physiology; Centre for Neuroscience; University of Flinders; Adelaide SA Australia
| | - Miao Yang
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
| | - Yoon Lim
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
| | - Kristen Georgiou
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
| | - Ying Sun
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
| | - Damien Keating
- Department of Human Physiology; Centre for Neuroscience; University of Flinders; Adelaide SA Australia
| | - Jia Liu
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
| | - Ye-Ran Wang
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
- Department of Neurology and Center for Clinical Neuroscience; Daping Hospital; Chongqing China
| | - Wei-ping Gai
- Department of Human Physiology; Centre for Neuroscience; University of Flinders; Adelaide SA Australia
| | - Jin-hua Zhong
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience; Daping Hospital; Chongqing China
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences; Faculty of Health Sciences; University of South Australia; Adelaide SA Australia
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14
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Yang M, Virassamy B, Vijayaraj SL, Lim Y, Saadipour K, Wang YJ, Han YC, Zhong JH, Morales CR, Zhou XF. The intracellular domain of sortilin interacts with amyloid precursor protein and regulates its lysosomal and lipid raft trafficking. PLoS One 2013; 8:e63049. [PMID: 23704887 PMCID: PMC3660575 DOI: 10.1371/journal.pone.0063049] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 03/27/2013] [Indexed: 12/31/2022] Open
Abstract
The processing of Amyloid precursor protein (APP) is multifaceted, comprising of protein transport, internalization and sequential proteolysis. However, the exact mechanism of APP intracellular trafficking and distribution remains unclear. To determine the interaction between sortilin and APP and the effect of sortilin on APP trafficking and processing, we studied the binding site and its function by mapping experiments, colocalization, coimmunoprecipitation and sucrose gradient fractionation. We identified for the first time that sortilin interacts with APP at both N- and C-terminal regions. The sortilin-FLVHRY (residues 787–792) and APP-NPTYKFFE (residues 759–766) motifs are crucial for the C-terminal interaction. We also found that lack of the FLVHRY motif reduces APP lysosomal targeting and increases APP distribution in lipid rafts in co-transfected HEK293 cells. These results are consistent with our in vivo data where sortilin knockout mice showed a decrease of APP lysosomal distribution and an increase of APP in lipid rafts. We further confirmed that overexpression of sortilin-FLVHRY mutants failed to rescue the lysosomal degradation of APP. Thus, our data suggests that sortilin is implicated in APP lysosomal and lipid raft targeting via its carboxyl-terminal F/YXXXXF/Y motif. Our study provides new molecular insights into APP trafficking and processing.
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Affiliation(s)
- Miao Yang
- School of Pharmacy and Medical Sciences, Sansom Institute, University of South Australia, Adelaide, Australia.
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15
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Zhou X, Saadipour K, Smith K, Yang M, Wang Y. P4‐070: Roles of p75NTR in APP trafficking and processing. Alzheimers Dement 2012. [DOI: 10.1016/j.jalz.2012.05.1772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Miao Yang
- Flinders UniversityAdelaideAustralia
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16
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Abstract
The aim of this study was to investigate the effect of short-term forced exercise protocol on passive avoidance retention in morphine-exposed rats. Effects of morphine on acquisition and retrieval of retention have been proven in the avoidance paradigms. Twenty four male Wistar rats weighing 250-300 g were used in this study. Animals were randomly divided into four groups including: (1) non-morphine-exposed without exercise (nA.nE) (2) non-morphine-exposed with exercise (nA.E) (3) morphine-exposed without exercise (A.nE) and (4) morphine-exposed with exercise (A.E). Rats ran as forced exercise on the motorized treadmill 1 h daily for ten days. Morphine-exposed animals received intraperitoneal morphine during first 5 days of the exercise period and their dependence to morphine was confirmed by naloxane admistration (10 mg kg(-1), i.p.) and withdrawal test. After 10 days of forced exercise, step down latency was tested and Inflexion Ratio (IR) was evaluated in each rat. Baseline step down latencies before any morphine exposing or exercise have shown no significant alteration in all groups. Inflexion Ratio (IR) ofnA.E group has increased significantly (p<0.001) at 1, 3, 7 and 14 days after receiving shock (learning) compared to nA.nE and A.E groups. Our data showed that short-term forced exercise on treadmill improved retention in both morphine-exposed and non morphine-exposed rats at least up to 7 days and more than 14 days, respectively. Alteration in retention between exercised groups may attribute the release of adrenal stress hormones such as epinephrine and corticosterone because of the emotional arousal.
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Affiliation(s)
- K Saadipour
- Physiology Research Center, Department of Physiology, Medicine Faculty, Ahwaz Jondishapour University of Medical Sciences, Ahwaz, Iran
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