1
|
Li W, Gan C, Yu S, Xu J, Tang L, Cheng H. Wnt3a/GSK3β/β-catenin Signalling Modulates Doxorubicin-associated Memory Deficits in Breast Cancer. Mol Neurobiol 2024; 61:5441-5458. [PMID: 38198045 DOI: 10.1007/s12035-023-03910-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 12/25/2023] [Indexed: 01/11/2024]
Abstract
BACKGROUND Chemobrain is widespread in breast cancer patients receiving chemotherapy. However, the exact mechanism, especially the associated signalling pathway, is not currently clear. This study was to evaluate the behavioural changes in breast cancer mice after chemotherapy and to further explore the role of Wnt3a/glycogen synthase kinase (GSK3β)/β-catenin signalling in chemobrain. METHODS MMTV-PyMT(+) breast cancer mice were injected intraperitoneally with doxorubicin (4 mg/kg) once a week for three weeks to establish a chemobrain model. The Morris water maze (MWM) and novel object recognition (NOR) tests were performed to assess the learning and memory ability. Electron microscopy was used to observe the structural changes in the hippocampal CA1 region. The brain tissue of breast cancer mice after chemotherapy was taken out for mRNA-seq detection. Then, the expression levels and phosphorylation of key proteins in the Wnt3a/GSK3 β/β-catenin signalling pathway were evaluated through Western blotting (WB) and immunofluorescence. RESULTS Doxorubicin-induced spatial and short-term memory impairment was observed in breast cancer mice, and obvious neuronal damage could be seen in the hippocampal CA1 region. Immunofluorescence staining for GSK3β was increased. Wnt signalling pathway is highly enriched from mRNA-seq analysis, with GSK3β genes at important nodes. The relative protein levels of p-PI3K, p-AKT, p-GSK3 β, Wnt3a and TCF-1 were decreased significantly, while the p-β-catenin level was increased. After injection of the GSK3β inhibitor sb216763 (1 ng/0.5 µl/side), hippocampal neuronal injury was alleviated to some extent, and the changes in the expression of proteins upstream and downstream of this signalling pathway were reversed. CONCLUSION Wnt3a/GSK3 β/β-catenin signalling is likely involved in doxorubicin-induced memory impairment. This result provides basic evidence for the further study of chemobrain in breast cancer.
Collapse
Affiliation(s)
- Wen Li
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, Anhui, 230601, China
- Department of Oncology, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong, 518000, China
| | - Chen Gan
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, Anhui, 230601, China
- Department of Oncology, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong, 518000, China
| | - Sheng Yu
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, Anhui, 230601, China
- Department of Oncology, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong, 518000, China
| | - Jian Xu
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, Anhui, 230601, China
- Department of Oncology, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong, 518000, China
| | - LingXue Tang
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, Anhui, 230601, China
- Department of Oncology, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong, 518000, China
| | - Huaidong Cheng
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, 510500, China.
- Department of Oncology, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong, 518000, China.
| |
Collapse
|
2
|
Garg A, Bandyopadhyay S. Role of an interdependent Wnt, GSK3-β/β-catenin and HB-EGF/EGFR mechanism in arsenic-induced hippocampal neurotoxicity in adult mice. CHEMOSPHERE 2024; 352:141375. [PMID: 38325618 DOI: 10.1016/j.chemosphere.2024.141375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 01/17/2024] [Accepted: 02/02/2024] [Indexed: 02/09/2024]
Abstract
We previously reported the neurotoxic effects of arsenic in the hippocampus. Here, we explored the involvement of Wnt pathway, which contributes to neuronal functions. Administering environmentally relevant arsenic concentrations to postnatal day-60 (PND60) mice demonstrated a dose-dependent increase in hippocampal Wnt3a and its components, Frizzled, phospho-LRP6, Dishevelled and Axin1 at PND90 and PND120. However, p-GSK3-β(Ser9) and β-catenin levels although elevated at PND90, decreased at PND120. Additionally, treatment with Wnt-inhibitor, rDkk1, reduced p-GSK3-β(Ser9) and β-catenin at PND90, but failed to affect their levels at PND120, indicating a time-dependent link with Wnt. To explore other underlying factors, we assessed epidermal growth factor receptor (EGFR) pathway, which interacts with GSK3-β and appears relevant to neuronal functions. We primarily found that arsenic reduced hippocampal phosphorylated-EGFR and its ligand, Heparin-binding EGF-like growth factor (HB-EGF), at both PND90 and PND120. Moreover, treatment with HB-EGF rescued p-GSK3-β(Ser9) and β-catenin levels at PND120, suggesting their HB-EGF/EGFR-dependent regulation at this time point. Additionally, rDkk1, LiCl (GSK3-β-activity inhibitor), or β-catenin protein treatments induced a time-dependent recovery in HB-EGF, indicating potential inter-dependent mechanism between hippocampal Wnt/β-catenin and HB-EGF/EGFR following arsenic exposure. Fluorescence immunolabeling then validated these findings in hippocampal neurons. Further exploration of hippocampal neuronal survival and apoptosis demonstrated that treatment with rDkk1, LiCl, β-catenin and HB-EGF improved Nissl staining and NeuN levels, and reduced cleaved-caspase-3 levels in arsenic-treated mice. Supportively, we detected improved Y-Maze and Passive Avoidance performances for learning-memory functions in these mice. Overall, our study provides novel insights into Wnt/β-catenin and HB-EGF/EGFR pathway interaction in arsenic-induced hippocampal neurotoxicity.
Collapse
Affiliation(s)
- Asmita Garg
- Systems Toxicology Group, Food, Drug & Chemical, Environment and Systems Toxicology Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sanghamitra Bandyopadhyay
- Systems Toxicology Group, Food, Drug & Chemical, Environment and Systems Toxicology Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| |
Collapse
|
3
|
Du Y, Yan T, Wu B, He B, Jia Y. Research on the mechanism of antidepressive effect of Suanzaoren Decoction through TLR4/MyD88/NF-κB pathway and Wnt/β-catenin pathway. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117190. [PMID: 37739105 DOI: 10.1016/j.jep.2023.117190] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/24/2023] [Accepted: 09/13/2023] [Indexed: 09/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Increased inflammatory response and disruption of neuroplasticity are important mechanisms in the hypothesis of the pathogenesis of depression. Thus, these two aspects are conducive to the development of treatments for depression. Suanzaoren Decoction (SZRD) is a classic traditional Chinese medicine compound for the treatment of insomnia, which can clinically relieve depression symptoms, but its antidepressant pharmacological mechanism remains to be elucidated. AIM OF THIS STUDY Based on the hypothesis of inflammation and neuroplasticity in depression, this study aimed to investigate the antidepressant effect of SZRD and its specific molecular mechanism through chronic unpredictable mild stress (CUMS) induced SD rat model and lipopolysaccharide (LPS) induced BV2 cell neuroinflammation model. MATERIALS AND METHODS The body weight and behavioral indexes of CUMS model rats treated with orally or without oral SZRD for 4 weeks were detected. Hematoxylin and eosin staining was used to observe brain pathological damage. Terminal-deoxynucleoitidyl Transferase Mediated Nick End Labeling (TUNEL) staining was used to observe neuronal apoptosis. Immunofluorescence, ELISA kit and Western blotting were used to detect the inflammatory index Iba-1 and inflammatory factors, as well as the important inflammatory pathway TLR4/MyD88/NF-κB. Enzyme linked immunosorbent assay (ELISA) and western blotting were used to detect neuroplasticity indexes proteins-brain-derived neurotrophic factor (BDNF), presynaptic membrane protein-synaptophysin (SYP), and postsynaptic protein- 95(PSD95), and the key pathway Wnt/β-catenin. The possible mechanism of SZRD antidepressant was further explored in LPS-induced BV2 cells. RESULTS In vivo and in vitro experiments showed that SZRD treatment significantly reversed the depression-like behaviors in rats, decreased the levels of inflammatory factors and increased the expression levels of BDNF, SYP, PSD95 in depression model rats. Furthermore, SZRD treatment inhibited the activation of TLR4/MyD88/NF-κB and Wnt/β-catenin pathways and reduced the massive nuclear translocation of NF-κB and β-catenin. The addition of NF-κB pathway agonists could partially offset the inhibitory effect of SZRD on the Wnt pathway, and the addition of Wnt pathway agonists could also partially offset the inhibitory effect of SZRD on the TLR4 pathway. CONCLUSION This study suggestted that SZRD may exert its antidepressant effect by regulating TLR4/MyD88/NF-κB pathway and Wnt/β-catenin pathway in combination.
Collapse
Affiliation(s)
- Yiyang Du
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang, China
| | - Tingxu Yan
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang, China
| | - Bo Wu
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang, China
| | - Bosai He
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang, China.
| | - Ying Jia
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang, China.
| |
Collapse
|
4
|
Gessner NR, Peiravi M, Zhang F, Yimam S, Springer D, Harbison ST. A conserved role for frizzled in sleep architecture. SLEEP ADVANCES : A JOURNAL OF THE SLEEP RESEARCH SOCIETY 2023; 4:zpad045. [PMID: 38033424 PMCID: PMC10684271 DOI: 10.1093/sleepadvances/zpad045] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/03/2023] [Indexed: 12/02/2023]
Abstract
Previous studies of natural variants in Drosophila melanogaster implicated the Wnt signaling receptor frizzled in sleep. Given that the Wnt signaling pathway is highly conserved across species, we hypothesized that frizzled class receptor 1 (Fzd1), the murine homolog of frizzled, would also have a role in sleep. Using a CRISPR transgenic approach, we removed most of the Fzd1 coding region from C57BL/6N mice. We used a video assay to measure sleep characteristics in Fzd1-deficient mice. As Wnt signaling is known to affect visuospatial memory, we also examined the impact of the deletion on learning and memory using the novel object recognition (NOR) paradigm. Fzd1-deficient mice had altered sleep compared to littermate controls. The mice did not respond differently to the NOR paradigm compared to controls but did display anxiety-like behavior. Our strategy demonstrates that the study of natural variation in Drosophila sleep translates into candidate genes for sleep in vertebrate species such as the mouse.
Collapse
Affiliation(s)
- Nicholas R Gessner
- Laboratory of Systems Genetics, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Morteza Peiravi
- Murine Phenotyping Core, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Fan Zhang
- Transgenic Core, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Shemsiya Yimam
- Laboratory of Systems Genetics, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Danielle Springer
- Murine Phenotyping Core, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Susan T Harbison
- Laboratory of Systems Genetics, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
5
|
Nachtigall EG, D R de Freitas J, de C Myskiw J, R G Furini C. Role of hippocampal Wnt signaling pathways on contextual fear memory reconsolidation. Neuroscience 2023:S0306-4522(23)00248-8. [PMID: 37286160 DOI: 10.1016/j.neuroscience.2023.05.028] [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: 07/25/2022] [Revised: 05/15/2023] [Accepted: 05/27/2023] [Indexed: 06/09/2023]
Abstract
Memories already consolidated when reactivated return to a labile state and can be modified, this process is known as reconsolidation. It is known the Wnt signaling pathways can modulate hippocampal synaptic plasticity as well as learning and memory. Yet, Wnt signaling pathways interact with NMDA (N-methyl-D-aspartate) receptors. However, whether canonical Wnt/β-catenin and non-canonical Wnt/Ca2+ signaling pathways are required in the CA1 region of hippocampus for contextual fear memory reconsolidation remains unclear. So, here we verified that the inhibition of canonical Wnt/β-catenin pathway with DKK1 (Dickkopf-1) into CA1 impaired the reconsolidation of contextual fear conditioning (CFC) memory when administered immediately and 2h after reactivation session but not 6h later, while the inhibition of non-canonical Wnt/Ca2+ signaling pathway with SFRP1 (Secreted frizzled-related protein-1) into CA1 immediately after reactivation session had no effect. Moreover, the impairment induced by DKK1 was blocked by the administration of the agonist of the NMDA receptors glycine site, D-Serine, immediately and 2h after reactivation session. We found that hippocampal canonical Wnt/β-catenin is necessary to the reconsolidation of CFC memory at least two hours after reactivation, while non-canonical Wnt/Ca2+ signaling pathway is not involved in this process and, that there is a link between Wnt/β-catenin signaling pathway and NMDA receptors. In view of this, this study provides new evidence regarding the neural mechanisms underlying contextual fear memory reconsolidation and contributes to provide a new possible target for the treatment of fear related disorders.
Collapse
Affiliation(s)
- Eduarda G Nachtigall
- Laboratory of Cognition and Memory Neurobiology, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690 - Bldg. 63, 3(rd) floor, 90610-000, Porto Alegre, RS, Brazil
| | - Júlia D R de Freitas
- Laboratory of Cognition and Memory Neurobiology, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690 - Bldg. 63, 3(rd) floor, 90610-000, Porto Alegre, RS, Brazil
| | - Jociane de C Myskiw
- Psychobiology and Neurocomputation Laboratory (LPBNC), Department of Biophysics, Institute of Biosciences, Federal University of Rio Grande do Sul (UFRGS). Av. Bento Gonçalves, 9500, Bldg. 43422, room 208A, 91501-970, Porto Alegre, RS, Brazil
| | - Cristiane R G Furini
- Laboratory of Cognition and Memory Neurobiology, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690 - Bldg. 63, 3(rd) floor, 90610-000, Porto Alegre, RS, Brazil; Institute of Geriatrics and Gerontology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681 - Bldg. 40, 8(th) floor, 90610-000, Porto Alegre, RS, Brazil.
| |
Collapse
|
6
|
Xu N, Geng L, Yan X, Niu A, Yu H, Su B. Involvement of canonical Wnt/β-catenin signaling in the extinction of auditory fear conditioning in male mice. Behav Brain Res 2023; 445:114378. [PMID: 36868362 DOI: 10.1016/j.bbr.2023.114378] [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: 01/06/2023] [Revised: 02/17/2023] [Accepted: 03/01/2023] [Indexed: 03/05/2023]
Abstract
The Wnt signaling pathway plays a critical role in activity-dependent plasticity processes such as long-term potentiation, learning and memory. However, the role of the Wnt signaling pathway in adult extinction is still not well understood. In this study, we aimed to investigate the roles and mechanisms of the canonical Wnt/β-catenin signaling pathway in the extinction of auditory fear conditioning (AFC) in adult mice. We found that AFC extinction training induced a significant decrease in p-GSK3β and nuclear β-catenin in the medial prefrontal cortex (mPFC). Micro-infusion of the canonical Wnt inhibitor Dkk1 into the mPFC before AFC extinction training facilitated AFC extinction, suggesting that the Wnt/β-catenin pathway is involved in AFC extinction. To determine how Dkk1 affects canonical Wnt/β-catenin signaling in AFC extinction, the protein levels of p-GSK3β and β-catenin were measured. We found that DKK1 produces a decrease in p-GSK3β and β-catenin. Moreover, we found that upregulating the Wnt/β-catenin pathway using LiCl (2 µg/side) impaired AFC extinction. These findings may help us understand the role of canonical Wnt signaling pathway in memory extinction and suggest that appropriate manipulating the Wnt/β-catenin signaling pathway might be a suitable way of therapeutically treating psychiatric disorders.
Collapse
Affiliation(s)
- Ning Xu
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, China
| | - Lian Geng
- Department of Cell Biology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Xianxia Yan
- Department of Clinical Laboratory, Shandong Mental Health Center, Jinan, Shandong 250014, China
| | - Aijun Niu
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, China
| | - Hui Yu
- Department of Cell Biology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medicine, Shandong University, Jinan, Shandong 250012, China.
| | - Bo Su
- Department of Cell Biology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medicine, Shandong University, Jinan, Shandong 250012, China.
| |
Collapse
|
7
|
Choquet D, Opazo P. The role of AMPAR lateral diffusion in memory. Semin Cell Dev Biol 2022; 125:76-83. [PMID: 35123863 DOI: 10.1016/j.semcdb.2022.01.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 12/17/2022]
Abstract
The accumulation of AMPARs to synapses is a fundamental step in Long-term potentiation (LTP) of synaptic transmission, a well-established cellular correlate of learning and memory. The discovery of a sizeable and highly mobile population of extrasynaptic AMPARs - randomly scanning the synaptic surface under basal conditions - provided a conceptual framework for a simplified model: LTP can be induced by the capture, and hence accumulation, of laterally diffusing extrasynaptic AMPARs. Here, we review the evidence supporting a rate-limiting role of AMPAR lateral diffusion in LTP and as consequence, in learning and memory. We propose that there are "multiple solutions" for achieving the diffusional trapping of AMPAR during LTP, mainly mediated by the interaction between interchangeable AMPAR auxiliary subunits and cell-adhesion molecules containing PDZ-binding domains and synaptic scaffolds containing PDZ-domains. We believe that this molecular degeneracy in the diffusional trapping of AMPAR during LTP serve to ensure the robustness of this crucial step in the making of memories. All in all, the role of AMPAR lateral diffusion in LTP is not only a conceptual leap in our understanding of memory, but it might also hold the keys for the development of therapeutics against disorders associated with memory deficits such as Alzheimer's disease.
Collapse
Affiliation(s)
- Daniel Choquet
- Interdisciplinary Institute for Neuroscience, CNRS, Univ. Bordeaux, IINS, UMR 5297, Bordeaux, France; Univ. Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, Bordeaux, France.
| | - Patricio Opazo
- UK Dementia Research Institute, Centre for Discovery Brain Sciences, University of Edinburgh, Chancellor's Building, Edinburgh Medical School, Edinburgh EH16 4SB, UK; Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia.
| |
Collapse
|
8
|
Narvaes RF, Nachtigall EG, Marcondes LA, Izquierdo I, Myskiw JDC, Furini CR. Involvement of medial prefrontal cortex canonical Wnt/β-catenin and non-canonical Wnt/Ca2+ signaling pathways in contextual fear memory in male rats. Behav Brain Res 2022; 430:113948. [DOI: 10.1016/j.bbr.2022.113948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 04/25/2022] [Accepted: 05/24/2022] [Indexed: 11/02/2022]
|
9
|
Anxiety and cognitive-related effects of Δ 9-tetrahydrocannabinol (THC) are differentially mediated through distinct GSK-3 vs. Akt-mTOR pathways in the nucleus accumbens of male rats. Psychopharmacology (Berl) 2022; 239:509-524. [PMID: 34860284 DOI: 10.1007/s00213-021-06029-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 11/09/2021] [Indexed: 10/19/2022]
Abstract
RATIONALE Δ9-tetrahydrocannabinol (THC) is the primary psychoactive compound in cannabis and is responsible for cannabis-related neuropsychiatric side effects, including abnormal affective processing, cognitive and sensory filtering deficits and memory impairments. A critical neural region linked to the psychotropic effects of THC is the nucleus accumbens shell (NASh), an integrative mesocorticolimbic structure that sends and receives inputs from multiple brain areas known to be dysregulated in various disorders, including schizophrenia and anxiety-related disorders. Considerable evidence demonstrates functional differences between posterior vs. anterior NASh sub-regions in the processing of affective and cognitive behaviours influenced by THC. Nevertheless, the neuroanatomical regions and local molecular pathways responsible for these psychotropic effects are not currently understood. OBJECTIVES The objectives of this study were to characterize the effects of intra-accumbens THC in the anterior vs. posterior regions of the NASh during emotional memory formation, sensorimotor gating and anxiety-related behaviours. METHODS We performed an integrative series of translational behavioural pharmacological studies examining anxiety, sensorimotor gating and fear-related associative memory formation combined with regionally specific molecular signalling analyses in male Sprague Dawley rats. RESULTS We report that THC in the posterior NASh causes distortions in emotional salience attribution, impaired sensory filtering and memory retention and heightened anxiety, through a glycogen-synthase-kinase-3 (GSK-3)-β-catenin dependent signalling pathway. In contrast, THC in the anterior NASh produces anxiolytic effects via modulation of protein kinase B (Akt) phosphorylation states. CONCLUSIONS These findings reveal critical new insights into the neuroanatomical and molecular mechanisms associated with the differential neuropsychiatric side effects of THC in dissociable nucleus accumbens sub-regions.
Collapse
|
10
|
Wang X, Zhao Y, Shi X, Gong M, Hao Y, Fu Y, Velez de-la-Paz OI, Wang X, Du Y, Guo X, Song L, Meng L, Gao Y, Yin X, Wang S, Shi Y, Shi H. Sulfur dioxide derivatives attenuates consolidation of contextual fear memory in mice. Eur J Pharmacol 2022; 914:174658. [PMID: 34861211 DOI: 10.1016/j.ejphar.2021.174658] [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: 02/19/2021] [Revised: 11/20/2021] [Accepted: 11/29/2021] [Indexed: 11/28/2022]
Abstract
Post-traumatic stress disorder (PTSD) is characterized by an enhancement of traumatic memory. Intervention strategies based on the different stages of memory have been shown to be effective in the prevention and control of PTSD. The endogenous gaseous molecule, sulfur dioxide (SO2), has been reported to significantly exert neuromodulatory effects; however, its regulation of learning and memory remains unestablished. This study aimed to investigate the effects of exogenous SO2 derivatives administration on the formation, consolidation, reconsolidation, retention, and expression of contextual fear memory. Behavioral results showed that both intraperitoneal injection (50 mg/kg, ip) and hippocampal infusion (5 μg/side) of SO2 derivatives (a mixture of sodium sulfite and sodium bisulfite, Na2SO3/NaHSO3, 3:1 M/M) significantly impaired consolidation but had no effect on reconsolidation and retention of contextual fear memory. These findings suggest that the attenuating effects of SO2 on the consolidation of fear memory involves, at least partially, the region of the hippocampus. The findings of this study provide direct evidence for the development of new strategies for PTSD prevention and treatment involving the use of gaseous SO2.
Collapse
Affiliation(s)
- Xinhao Wang
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Yize Zhao
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Xiaorui Shi
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Miao Gong
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Ying Hao
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Yaling Fu
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Omar Israel Velez de-la-Paz
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Xi Wang
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Yuru Du
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Xiangfei Guo
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Li Song
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China; Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, Hebei, 050017, China
| | - Li Meng
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Yuan Gao
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China; Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, Hebei, 050017, China
| | - Xi Yin
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Department of Functional Region of Diagnosis, Fourth Hospital of Hebei Medical University, Shijiazhuang, 050011, China
| | - Sheng Wang
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Yun Shi
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, Hebei, 050017, China.
| | - Haishui Shi
- Neuroscience Research Center, Institute of Medical and Health Science of HeBMU, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, Shijiazhuang, 050017, China.
| |
Collapse
|
11
|
Narvaes RF, Furini CRG. Role of Wnt signaling in synaptic plasticity and memory. Neurobiol Learn Mem 2021; 187:107558. [PMID: 34808336 DOI: 10.1016/j.nlm.2021.107558] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 10/15/2021] [Accepted: 11/15/2021] [Indexed: 12/24/2022]
Abstract
Ever since their discoveries, the Wnt pathways have been consistently associated with key features of cellular development, including metabolism, structure and cell fate. The three known pathways (the canonical Wnt/β-catenin and the two non-canonical Wnt/Ca++ and Wnt/JNK/PCP pathways) participate in complex networks of interaction with a wide range of regulators of cell function, such as GSK-3β, AKT, PKC and mTOR, among others. These proteins are known to be involved in the formation and maintenance of memory. Currently, studies with Wnt and memory have shown that the canonical and non-canonical pathways play key roles in different processes associated with memory. So, in this review we briefly summarize the different roles that Wnt signaling can play in neurons and in memory, as well as in Alzheimer's disease, focusing towards animal studies. We start with the molecular characterization of the family and its receptors, as well as the most commonly used drugs for pharmacological manipulations. Next, we describe its role in synaptic plasticity and memory, and how the regulations of these pathways affect crucial features of neuronal function. Furthermore, we succinctly present the current knowledge on how the Wnt pathways are implicated in Alzheimer's disease, and how studies are seeing them as a potential candidate for effective treatments. Lastly, we point toward challenges of Wnt research, and how knowledge on these pathways can lead towards a better understanding of neurobiological and pathological processes.
Collapse
Affiliation(s)
- Rodrigo F Narvaes
- Laboratory of Cognition and Memory Neurobiology, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690 - 3rd floor, 90610-000 Porto Alegre, RS, Brazil.
| | - Cristiane R G Furini
- Laboratory of Cognition and Memory Neurobiology, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690 - 3rd floor, 90610-000 Porto Alegre, RS, Brazil.
| |
Collapse
|
12
|
Integration of peripheral transcriptomics, genomics, and interactomics following trauma identifies causal genes for symptoms of post-traumatic stress and major depression. Mol Psychiatry 2021; 26:3077-3092. [PMID: 33963278 DOI: 10.1038/s41380-021-01084-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 02/26/2021] [Accepted: 03/26/2021] [Indexed: 02/03/2023]
Abstract
Posttraumatic stress disorder (PTSD) is a debilitating syndrome with substantial morbidity and mortality that occurs in the aftermath of trauma. Symptoms of major depressive disorder (MDD) are also a frequent consequence of trauma exposure. Identifying novel risk markers in the immediate aftermath of trauma is a critical step for the identification of novel biological targets to understand mechanisms of pathophysiology and prevention, as well as the determination of patients most at risk who may benefit from immediate intervention. Our study utilizes a novel approach to computationally integrate blood-based transcriptomics, genomics, and interactomics to understand the development of risk vs. resilience in the months following trauma exposure. In a two-site longitudinal, observational prospective study, we assessed over 10,000 individuals and enrolled >700 subjects in the immediate aftermath of trauma (average 5.3 h post-trauma (range 0.5-12 h)) in the Grady Memorial Hospital (Atlanta) and Jackson Memorial Hospital (Miami) emergency departments. RNA expression data and 6-month follow-up data were available for 366 individuals, while genotype, transcriptome, and phenotype data were available for 297 patients. To maximize our power and understanding of genes and pathways that predict risk vs. resilience, we utilized a set-cover approach to capture fluctuations of gene expression of PTSD or depression-converting patients and non-converting trauma-exposed controls to find representative sets of disease-relevant dysregulated genes. We annotated such genes with their corresponding expression quantitative trait loci and applied a variant of a current flow algorithm to identify genes that potentially were causal for the observed dysregulation of disease genes involved in the development of depression and PTSD symptoms after trauma exposure. We obtained a final list of 11 driver causal genes related to MDD symptoms, 13 genes for PTSD symptoms, and 22 genes in PTSD and/or MDD. We observed that these individual or combined disorders shared ESR1, RUNX1, PPARA, and WWOX as driver causal genes, while other genes appeared to be causal driver in the PTSD only or MDD only cases. A number of these identified causal pathways have been previously implicated in the biology or genetics of PTSD and MDD, as well as in preclinical models of amygdala function and fear regulation. Our work provides a promising set of initial pathways that may underlie causal mechanisms in the development of PTSD or MDD in the aftermath of trauma.
Collapse
|
13
|
Wang F, Li C, Shao J, Ma J. Sevoflurane induces inflammation of microglia in hippocampus of neonatal rats by inhibiting Wnt/β-Catenin/CaMKIV pathway. J Pharmacol Sci 2021; 146:105-115. [PMID: 33941321 DOI: 10.1016/j.jphs.2021.02.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 01/23/2021] [Accepted: 02/04/2021] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE To investigate the effect of sevoflurane on inflammation of microglia in hippocampus of neonatal rats, and to investigate whether the related mechanism is related to Wnt/β-Catenin/CaMKIV pathway. METHODS Neonatal rats were anesthetized with 2% or 3% sevoflurane for 4 h a day for 3 consecutive days. Water maze test was used to detect the effect of sevoflurane anesthesia on memory function of neonatal rats. H&E and Nissl staining were used to observe the pathological damage of hippocampal area of neonatal rats induced by sevoflurane anesthesia. The expression of microglial marker Iba-1 was detected by Immunofluorescence. Immunofluorescence and WB were used to detect the expression CD32b, CD86, TNF-α, IL-6, Wnt3a, β-Catenin and CaMKIV in hippocampus. To further explore the related mechanism, Wnt-3α inhibitor and activator was treated to study the effect of sevoflurane on microglial inflammation in hippocampus of neonatal rats. RESULTS Sevoflurane anesthesia significantly increased escape latency time, reduced platform crossing times, and damaged the learning and memory ability of neonatal rats. H&E and Nissl staining results showed that sevoflurane anesthesia caused obvious damage to the hippocampus of neonatal rats. Sevoflurane anesthesia promoted the expression of Iba-1 and activated microglia. Sevoflurane anesthesia not only significantly increased the positive expression of CD32b, CD86, TNF-α and IL-6, but also decreased the expression of Wnt3a, β-Catenin and CaMKIV. These results suggested that sevoflurane inhibited Wnt/β-Catenin/CaMKIV pathway. CONCLUSION Sevoflurane induces inflammation of microglia in hippocampus of neonatal rats by inhibiting Wnt/β-Catenin/CaMKIV pathway.
Collapse
Affiliation(s)
- Fengjuan Wang
- Department of Anesthesiology, The Second Hospital of Shandong University, Jinan, 250033, China
| | - Chuangang Li
- Department of Anesthesiology, The Second Hospital of Shandong University, Jinan, 250033, China
| | - Jianhui Shao
- Spinal Surgery Division II, Weifang City People's Hospital, Weifang, 261000, China
| | - Jinfeng Ma
- Department of Anesthesiology, The Second Hospital of Shandong University, Jinan, 250033, China.
| |
Collapse
|
14
|
Ni Y, Liu B, Wu X, Liu J, Ba R, Zhao C. FOXG1 Directly Suppresses Wnt5a During the Development of the Hippocampus. Neurosci Bull 2021; 37:298-310. [PMID: 33389683 PMCID: PMC7954983 DOI: 10.1007/s12264-020-00618-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 07/19/2020] [Indexed: 12/17/2022] Open
Abstract
The Wnt signaling pathway plays key roles in various developmental processes. Wnt5a, which activates the non-canonical pathway, has been shown to be particularly important for axon guidance and outgrowth as well as dendrite morphogenesis. However, the mechanism underlying the regulation of Wnt5a remains unclear. Here, through conditional disruption of Foxg1 in hippocampal progenitors and postmitotic neurons achieved by crossing Foxg1fl/fl with Emx1-Cre and Nex-Cre, respectively, we found that Wnt5a rather than Wnt3a/Wnt2b was markedly upregulated. Overexpression of Foxg1 had the opposite effects along with decreased dendritic complexity and reduced mossy fibers in the hippocampus. We further demonstrated that FOXG1 directly repressed Wnt5a by binding to its promoter and one enhancer site. These results expand our knowledge of the interaction between Foxg1 and Wnt signaling and help elucidate the mechanisms underlying hippocampal development.
Collapse
Affiliation(s)
- Yang Ni
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Bin Liu
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Xiaojing Wu
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Junhua Liu
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Ru Ba
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Chunjie Zhao
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, School of Medicine, Southeast University, Nanjing, 210009, China.
| |
Collapse
|
15
|
Flores-Hernández E, Velázquez DM, Castañeda-Patlán MC, Fuentes-García G, Fonseca-Camarillo G, Yamamoto-Furusho JK, Romero-Avila MT, García-Sáinz JA, Robles-Flores M. Canonical and non-canonical Wnt signaling are simultaneously activated by Wnts in colon cancer cells. Cell Signal 2020; 72:109636. [PMID: 32283254 DOI: 10.1016/j.cellsig.2020.109636] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 04/06/2020] [Accepted: 04/09/2020] [Indexed: 12/26/2022]
Abstract
The Wnt signaling pathway is a crucial regulator of the intestinal epithelium homeostasis and is altered in most colon cancers. While the role of aberrant canonical, β-catenin-dependent Wnt signaling has been well established in colon cancer promotion, much less is known about the role played by noncanonical, β-catenin-independent Wnt signaling in this type of cancer. This work aimed to characterize the noncanonical signal transduction pathway in colon cancer cells. To this end, we used the prototype noncanonical ligand, Wnt5a, in comparison with Wnt3a, the prototype of a canonical β-catenin activating ligand. The analysis of the expression profile of Wnt receptors in colon cancer cell lines showed a clear increase in both level expression and variety of Frizzled receptor types expressed in colon cancer cells compared with non-malignant cells. We found that Wnt5a activates a typical Wnt/Ca++ - noncanonical signaling pathway in colon malignant cells, inducing the hyperphosphorylation of Dvl1, Dvl2 and Dvl3, promoting Ca++ mobilization as a result of phospholipase C (PLC) activation via pertussis toxin-sensitive G-protein, and inducing PLC-dependent cell migration. We also found that while the co-receptor Ror2 tyrosine kinase activity is not required for Ca++ mobilization-induced by Wnt5a, it is required for the inhibitory effects of Wnt5a on the β-catenin-dependent transcriptional activity. Unexpectedly, we found that although the prototype canonical Wnt3a ligand was unique in stimulating the β-catenin-dependent transcriptional activity, it also simultaneously activated PLC, promoted Ca++ mobilization, and induced Rho kinase and PLC-dependent cell migration. Our data indicate, therefore, that a Wnt ligand can activate at the same time the so-called Wnt canonical and noncanonical pathways inducing the formation of complex signaling networks to integrate both pathways in colon cancer cells.
Collapse
Affiliation(s)
- Eric Flores-Hernández
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Dora M Velázquez
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - M Cristina Castañeda-Patlán
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Gabriela Fuentes-García
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Gabriela Fonseca-Camarillo
- Inflammatory Bowel Disease Clinic, Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Jesús K Yamamoto-Furusho
- Inflammatory Bowel Disease Clinic, Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - M Teresa Romero-Avila
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - J Adolfo García-Sáinz
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Martha Robles-Flores
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico.
| |
Collapse
|
16
|
Abstract
Estrogen (E2) modulates a wide range of neural functions such as spine formation, synaptic plasticity, and neurotransmission in the hippocampus. Dendritic spines and synapse numbers in hippocampal neurons of female rats cyclically fluctuate across the estrous cycle, but the key genes responsible for these fluctuations are still unknown. In order to address this question, we explore the hippocampal transcriptome via RNA-sequencing (RNA-seq) at the proestrus (PE) and estrus (ES) stages in female rats. At standard fold-change selection criteria, 37 differentially expressed genes (DEGs) were found in PE vs. ES groups (FDR adjusted p-value (q)<0.05). The transcriptional changes identified by RNA-seq were confirmed by quantitative real-time PCR. To gain insight into the function of the DEGs, the E2-regulated genes were annotated by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes database (KEGG). Based on GO and KEGG pathways, the identified DEGs of PE vs. ES stages are involved in extracellular matrix formation, regulation of actin cytoskeleton, oxidative stress, neuroprotection, immune system, oligodendrocyte maturation and myelination, signal transduction pathways, growth factor signaling, retinoid signaling, aging, cellular process, metabolism and transport. The profiles of the gene expression in the hippocampus identified at the PE vs. ES stages were compared with the gene expression profiles in ovariectomized (OVX) rats receiving E2 replacement via RNA-seq and qPCR. The profiles of gene expression between the OVX+E2 and the estrous cycle were different and the possible causes were discussed.
Collapse
Affiliation(s)
- Javed Iqbal
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Zhi-Nei Tan
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Min-Xing Li
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Hui-Bin Chen
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Boyu Ma
- Department of Neuroscience, University of Connecticut Health Center, Farmington, CT, USA
| | - Xin Zhou
- Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | - Xin-Ming Ma
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
- Department of Neuroscience, University of Connecticut Health Center, Farmington, CT, USA
| |
Collapse
|
17
|
Zhang T, Hou C, Zhang S, Liu S, Li Z, Gao J. Lgl1 deficiency disrupts hippocampal development and impairs cognitive performance in mice. GENES BRAIN AND BEHAVIOR 2019; 18:e12605. [PMID: 31415124 DOI: 10.1111/gbb.12605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 08/11/2019] [Accepted: 08/12/2019] [Indexed: 12/15/2022]
Abstract
Cellular polarity is crucial for brain development and morphogenesis. Lethal giant larvae 1 (Lgl1) plays a crucial role in the establishment of cell polarity from Drosophila to mammalian cells. Previous studies have found the importance of Lgl1 in the development of cerebellar, olfactory bulb, and cerebral cortex. However, the role of Lgl1 in hippocampal development during the embryonic stage and function in adult mice is still unknown. In our study, we created Lgl1-deficient hippocampus mice by using Emx1-Cre mice. Histological analysis showed that the Emx1-Lgl1-/- mice exhibited reduced size of the hippocampus with severe malformations of hippocampal cytoarchitecture. These defects mainly originated from the disrupted hippocampal neuroepithelium, including increased cell proliferation, abnormal interkinetic nuclear migration, reduced differentiation, increased apoptosis, gradual disruption of adherens junctions, and abnormal neuronal migration. The radial glial scaffold was disorganized in the Lgl1-deficient hippocampus. Thus, Lgl1 plays a distinct role in hippocampal neurogenesis. In addition, the Emx1-Lgl1-/- mice displayed impaired behavioral performance in the Morris water maze and fear conditioning test.
Collapse
Affiliation(s)
- Tingting Zhang
- School of Life Science and Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, China
| | - Congzhe Hou
- Department of Reproductive medicine, Second Hospital of Shandong University, Jinan, Shandong, China
| | - Sen Zhang
- School of Life Science and Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, China
| | - Shuoyang Liu
- School of Life Science and Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, China
| | - Zhenzu Li
- Department of Bioengineering, Shandong Polytechnic, Jinan, China
| | - Jiangang Gao
- School of Life Science and Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, China
| |
Collapse
|
18
|
Taxier LR, Philippi SM, Fortress AM, Frick KM. Dickkopf-1 blocks 17β-estradiol-enhanced object memory consolidation in ovariectomized female mice. Horm Behav 2019; 114:104545. [PMID: 31228421 PMCID: PMC6732224 DOI: 10.1016/j.yhbeh.2019.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 06/15/2019] [Accepted: 06/16/2019] [Indexed: 01/05/2023]
Abstract
The memory-enhancing effects of 17β-estradiol (E2) depend upon rapid activation of several cell-signaling cascades within the dorsal hippocampus (DH). Among the many cell-signaling pathways that mediate memory processes, Wnt/β-catenin signaling has emerged as a potential key player because of its importance to hippocampal development and synaptic plasticity. However, whether E2 interacts with Wnt/β-catenin signaling to promote memory consolidation is unknown. Therefore, the present study examined whether Wnt/β-catenin signaling within the DH is necessary for E2-induced memory consolidation in ovariectomized mice tested in the object recognition and object placement tasks. Ovariectomized C57BL/6 mice received immediate post-training infusions of E2 or vehicle into the dorsal third ventricle plus the endogenous Wnt/β-catenin antagonist Dickkopf-1 (Dkk-1) or vehicle into the DH to assess whether the memory-enhancing effects of E2 depend on activation of Wnt/β-catenin signaling. Our results suggest that Dkk-1 blocks E2-induced memory enhancement as hypothesized, but may do so by only moderately blunting Wnt/β-catenin signaling while concurrently activating Wnt/JNK signaling. The current study provides novel insights into the mechanisms through which E2 enhances memory consolidation in the DH, as well as critical information about the mechanistic actions of Dkk-1.
Collapse
Affiliation(s)
- Lisa R Taxier
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States.
| | - Sarah M Philippi
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States.
| | - Ashley M Fortress
- V.A. Pittsburgh Healthcare System, Pittsburgh, PA 15216, United States.
| | - Karyn M Frick
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States.
| |
Collapse
|
19
|
Chen YF, Chen ZX, Wang RH, Shi YW, Xue L, Wang XG, Zhao H. Knockdown of CLC-3 in the hippocampal CA1 impairs contextual fear memory. Prog Neuropsychopharmacol Biol Psychiatry 2019; 89:132-145. [PMID: 30025794 DOI: 10.1016/j.pnpbp.2018.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 06/11/2018] [Accepted: 07/05/2018] [Indexed: 01/01/2023]
Abstract
Previous studies support a critical role of hippocampus in contextual fear memory. Structural and functional alterations of hippocampus occur frequently in posttraumatic stress disorders (PTSD). Recent reports reveal that knockout of CLC-3, a member of the CLC family of anion channels and transporters, leads to neuronal degeneration and loss of hippocampus. However, the role of CLC-3 in contextual fear memory remains unknown. Using adenovirus and adeno-associated virus gene transfer to knockdown CLC-3 in hippocampal CA1, we investigate the role of CLC-3 in contextual fear memory. CLC-3 expression is increased in hippocampal CA1 after formation of long-term contextual fear memory. Knockdown of CLC-3 by adenovirus infusion in hippocampal CA1 significantly attenuates the contextual fear memory, reduces spine density, induces defects of excitatory synaptic ultrastructure showed by the decreased PSD length, PSD thickness and active zone length, and impairs L-LTP induction and maintenance. Knockdown of CLC-3 also induces the synaptic NMDAR subunit composition to an increased GluN2A/GluN2B ratio pattern and reduces the activity of CaMKII-α. Furthermore, selectively knockdown of CLC-3 in excitatory neurons by adeno-associated virus driven from CaMKII-α promoter is sufficient to impair long-term contextual fear memory. These findings highlight that CLC-3 in hippocampal CA1 is necessary for contextual fear memory.
Collapse
Affiliation(s)
- Ye-Fei Chen
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Translational Forensic Medicine Engineering Technology Research Center, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, China
| | - Zi-Xiang Chen
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, China
| | - Run-Hua Wang
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, China
| | - Yan-Wei Shi
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Translational Forensic Medicine Engineering Technology Research Center, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, China
| | - Li Xue
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Translational Forensic Medicine Engineering Technology Research Center, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, China
| | - Xiao-Guang Wang
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Translational Forensic Medicine Engineering Technology Research Center, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, China.
| | - Hu Zhao
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Translational Forensic Medicine Engineering Technology Research Center, Zhongshan School of Medicine, Sun Yat-sen University, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, China.
| |
Collapse
|
20
|
Mishra A, Singh S, Tiwari V, Parul, Shukla S. Dopamine D1 receptor activation improves adult hippocampal neurogenesis and exerts anxiolytic and antidepressant-like effect via activation of Wnt/β-catenin pathways in rat model of Parkinson's disease. Neurochem Int 2018; 122:170-186. [PMID: 30500462 DOI: 10.1016/j.neuint.2018.11.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 12/19/2022]
Abstract
Parkinson's disease (PD) is primarily characterized by midbrain dopamine depletion. Dopamine acts through dopamine receptors (D1 to D5) to regulate locomotion, motivation, pleasure, attention, cognitive functions and formation of newborn neurons, all of which are likely to be impaired in PD. Reduced hippocampal neurogenesis associated with dopamine depletion has been demonstrated in patients with PD. However, the precise mechanism to regulate multiple steps of adult hippocampal neurogenesis by dopamine receptor(s) is still unknown. In this study, we tested whether pharmacological agonism and antagonism of dopamine D1 and D2 receptor regulate nonmotor symptoms, neural stem cell (NSC) proliferation and fate specification and explored the cellular mechanism(s) underlying dopamine receptor (D1 and D2) mediated adult hippocampal neurogenesis in rat model of PD-like phenotypes. We found that single unilateral intra-medial forebrain bundle administration of 6-hydroxydopamine (6-OHDA) reduced D1 receptor level in the hippocampus. Pharmacological agonism of D1 receptor exerts anxiolytic and antidepressant-like effects as well as enhanced NSC proliferation, long-term survival and neuronal differentiation by positively regulating Wnt/β-catenin signaling pathway in hippocampus in PD rats. shRNA lentivirus mediated knockdown of Axin-2, a negative regulator of Wnt/β-catenin signaling potentially attenuated D1 receptor antagonist induced anxiety and depression-like phenotypes and impairment in adult hippocampal neurogenesis in PD rats. Our results suggest that improved nonmotor symptoms and hippocampal neurogenesis in PD rats controlled by D1-like receptors that involve the activation of Wnt/β-catenin signaling.
Collapse
Affiliation(s)
- Akanksha Mishra
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India; Academy of Scientific and Innovative Research, New Delhi, India
| | - Sonu Singh
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India
| | - Virendra Tiwari
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India; Academy of Scientific and Innovative Research, New Delhi, India
| | - Parul
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India
| | - Shubha Shukla
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India; Academy of Scientific and Innovative Research, New Delhi, India.
| |
Collapse
|
21
|
Buechler J, Salinas PC. Deficient Wnt Signaling and Synaptic Vulnerability in Alzheimer's Disease: Emerging Roles for the LRP6 Receptor. Front Synaptic Neurosci 2018; 10:38. [PMID: 30425633 PMCID: PMC6218458 DOI: 10.3389/fnsyn.2018.00038] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 10/10/2018] [Indexed: 12/11/2022] Open
Abstract
Synapse dysfunction and loss represent critical early events in the pathophysiology of Alzheimer’s disease (AD). While extensive research has elucidated the direct synaptotoxic effects of Amyloid-β (Aβ) oligomers, less is known about how signaling pathways at the synapse are affected by Aβ. A better understanding of the cellular and molecular mechanisms underlying synaptic vulnerability in AD is key to illuminating the determinants of AD susceptibility and will unveil novel therapeutic avenues. Canonical Wnt signaling through the Wnt co-receptor LRP6 has a critical role in maintaining the structural and functional integrity of synaptic connections in the adult brain. Accumulating evidence suggests that deficient Wnt signaling may contribute to AD pathology. In particular, LRP6 deficiency compromises synaptic function and stability, and contributes to Aß production and plaque formation. Here, we review the role of Wnt signaling for synaptic maintenance in the adult brain and the contribution of aberrant Wnt signaling to synaptic degeneration in AD. We place a focus on emerging evidence implicating the LRP6 receptor as an important modulator of AD risk and pathology.
Collapse
Affiliation(s)
- Johanna Buechler
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Patricia C Salinas
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| |
Collapse
|
22
|
The amyloid precursor protein binds to β-catenin and modulates its cellular distribution. Neurosci Lett 2018; 685:190-195. [DOI: 10.1016/j.neulet.2018.08.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/20/2018] [Accepted: 08/29/2018] [Indexed: 11/18/2022]
|
23
|
Wang X, Li M, Zhu H, Yu Y, Xu Y, Zhang W, Bian C. Transcriptional Regulation Involved in Fear Memory Reconsolidation. J Mol Neurosci 2018; 65:127-140. [PMID: 29796837 DOI: 10.1007/s12031-018-1084-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 05/09/2018] [Indexed: 11/26/2022]
Abstract
Memory reconsolidation has been demonstrated to offer a potential target period during which the fear memories underlying fear disorders can be disrupted. Reconsolidation is a labile stage that consolidated memories re-enter after memories are reactivated. Reactivated memories, induced by cues related to traumatic events, are susceptible to strengthening and weakening. Gene transcription regulation and protein synthesis have been suggested to be required for fear memory reconsolidation. Investigating the transcriptional regulation mechanisms underlying reconsolidation may provide a therapeutic method for the treatment of fear disorders such as post-traumatic stress disorder (PTSD). However, the therapeutic effect of treating a fear disorder through interfering with reconsolidation is still contradictory. In this review, we summarize several transcription factors that have been linked to fear memory reconsolidation and propose that transcription factors, as well as related signaling pathways can serve as targets for fear memory interventions. Then, we discuss the application of pharmacological and behavioral interventions during reconsolidation that may or not efficiently treat fear disorders.
Collapse
Affiliation(s)
- Xu Wang
- Department of Military Psychology, College of Psychology, Army Medical University, Chongqing, 400038, China
- Forth Battalion of Cadet Brigade, Army Medical University, Chongqing, 400038, China
| | - Min Li
- Department of Military Psychology, College of Psychology, Army Medical University, Chongqing, 400038, China
| | - Haitao Zhu
- Medical Company, Troops 95848 of People's Liberation Army, Xiaogan, 432100, China
| | - Yongju Yu
- Department of Military Psychology, College of Psychology, Army Medical University, Chongqing, 400038, China
| | - Yuanyuan Xu
- Department of Military Psychology, College of Psychology, Army Medical University, Chongqing, 400038, China
| | - Wenmo Zhang
- Department of Fundamental, Army Logistical University of PLA, Chongqing, 401331, China
| | - Chen Bian
- Department of Military Psychology, College of Psychology, Army Medical University, Chongqing, 400038, China.
| |
Collapse
|
24
|
Yoshihara M, Yoshihara M. 'Necessary and sufficient' in biology is not necessarily necessary - confusions and erroneous conclusions resulting from misapplied logic in the field of biology, especially neuroscience. J Neurogenet 2018; 32:53-64. [PMID: 29757057 DOI: 10.1080/01677063.2018.1468443] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In this article, we describe an incorrect use of logic which involves the careless application of the 'necessary and sufficient' condition originally used in formal logic. This logical fallacy is causing frequent confusion in current biology, especially in neuroscience. In order to clarify this problem, we first dissect the structure of this incorrect logic (which we refer to as 'misapplied-N&S') to show how necessity and sufficiency in misapplied-N&S are not matching each other. Potential pitfalls of utilizing misapplied-N&S are exemplified by cases such as the discrediting of command neurons and other potentially key neurons, the distorting of truth in optogenetic studies, and the wrongful justification of studies with little meaning. In particular, the use of the word 'sufficient' in optogenetics tends to generate misunderstandings by opening up multiple interpretations. To avoid the confusion caused by the misleading logic, we now recommend using 'indispensable and inducing' instead of using 'necessary and sufficient.' However, we ultimately recommend fully articulating the limits of what our experiments suggest, not relying on such simple phrases. Only after this problem is fully understood and more rigorous language is demanded, can we finally interpret experimental results in an accurate way.
Collapse
Affiliation(s)
- Motojiro Yoshihara
- a Memory Neurobiology Project , National Institute of Information and Communications Technology , Kobe , Japan.,b Picower Institute for Learning and Memory, Massachusetts Institute of Technology , Cambridge , MA , USA
| | - Motoyuki Yoshihara
- c Department of Economics , University of California , San Diego , CA , USA
| |
Collapse
|
25
|
Chronic infusion of Wnt7a, Wnt5a and Dkk-1 in the adult hippocampus induces structural synaptic changes and modifies anxiety and memory performance. Brain Res Bull 2018; 139:243-255. [DOI: 10.1016/j.brainresbull.2018.03.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 02/02/2018] [Accepted: 03/09/2018] [Indexed: 01/24/2023]
|
26
|
Ríos JA, Godoy JA, Inestrosa NC. Wnt3a ligand facilitates autophagy in hippocampal neurons by modulating a novel GSK-3β-AMPK axis. Cell Commun Signal 2018; 16:15. [PMID: 29642895 PMCID: PMC5896060 DOI: 10.1186/s12964-018-0227-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 04/06/2018] [Indexed: 12/27/2022] Open
Abstract
Background In the adult central nervous system (CNS), Wnt signaling regulates dendritic structure and synaptic plasticity. The Wnt signaling pathway can be divided into the canonical (β-catenin-dependent) and non-canonical pathways. In the canonical pathway, the binding of canonical ligands such as Wnt3a to the Frizzled receptor induces inactivation of glycogen synthase kinase-3β (GSK-3β), which stabilizes β-catenin and allows its translocation to the nucleus. However, to date, few studies have focused on β-catenin-independent Wnt signaling or explained the underlying mechanisms connecting Wnt signaling to cellular energy metabolism. A recent study demonstrated negative regulation of 5′ adenosine monophosphate-activated protein kinase (AMPK), a major target of GSK-3β that regulates cellular metabolism under diverse conditions. Mainly based on these observations, we evaluated whether Wnt3a ligand modulates autophagy by regulating the GSK-3β/AMPK axis. Methods Cultured primary hippocampal neurons and slices of the CA1 region of rat hippocampus were used. GSK-3β inhibition, AMPK activation, PP2Ac expression, and LC3 processing were examined by western blotting. Autophagic compartments were studied using the CYTO-ID® fluorescent probe, and mature autophagosomes were observed via transmission electron microscopy (TEM). Results Wnt3a ligand, acting through the Frizzled receptor, promotes the rapid activation of AMPK by inactivating GSK-3β. Biochemical analysis of downstream targets indicated that Wnt3a ligand modulates autophagy in hippocampal neurons. Conclusions Our results revealed new aspects of Wnt signaling in neuronal metabolism. First, AMPK is an additional target downstream of the Wnt cascade, suggesting a molecular mechanism for the metabolic effects previously observed for Wnt signaling. Second, this mechanism is independent of β-catenin, suggesting a relevant role for non-genomic activity of the Wnt pathway in cellular metabolism. Finally, these results have new implications regarding the role of Wnt signaling in the modulation of autophagy in neurons, with a possible role in the removal of accumulated intracellular proteins.
Collapse
Affiliation(s)
- Juvenal A Ríos
- Centro de Envejecimiento y Regeneración UC (CARE UC), Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Alameda 340, PO Box 114-D, Santiago, Chile
| | - Juan A Godoy
- Centro de Envejecimiento y Regeneración UC (CARE UC), Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Alameda 340, PO Box 114-D, Santiago, Chile.,Laboratorio de Fisiología Molecular, Departamento de Ciencias Experimentales y de la Salud, Universidad Pompeu de Fabra, Barcelona, Spain.,Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile
| | - Nibaldo C Inestrosa
- Centro de Envejecimiento y Regeneración UC (CARE UC), Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Alameda 340, PO Box 114-D, Santiago, Chile. .,Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, Australia. .,Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile.
| |
Collapse
|
27
|
Ianov L, De Both M, Chawla MK, Rani A, Kennedy AJ, Piras I, Day JJ, Siniard A, Kumar A, Sweatt JD, Barnes CA, Huentelman MJ, Foster TC. Hippocampal Transcriptomic Profiles: Subfield Vulnerability to Age and Cognitive Impairment. Front Aging Neurosci 2017; 9:383. [PMID: 29276487 PMCID: PMC5727020 DOI: 10.3389/fnagi.2017.00383] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/07/2017] [Indexed: 01/11/2023] Open
Abstract
The current study employed next-generation RNA sequencing to examine gene expression differences related to brain aging, cognitive decline, and hippocampal subfields. Young and aged rats were trained on a spatial episodic memory task. Hippocampal regions CA1, CA3, and the dentate gyrus were isolated. Poly-A mRNA was examined using two different sequencing platforms, Illumina, and Ion Proton. The Illumina platform was used to generate seed lists of genes that were statistically differentially expressed across regions, ages, or in association with cognitive function. The gene lists were then retested using the data from the Ion Proton platform. The results indicate hippocampal subfield differences in gene expression and point to regional differences in vulnerability to aging. Aging was associated with increased expression of immune response-related genes, particularly in the dentate gyrus. For the memory task, impaired performance of aged animals was linked to the regulation of Ca2+ and synaptic function in region CA1. Finally, we provide a transcriptomic characterization of the three subfields regardless of age or cognitive status, highlighting and confirming a correspondence between cytoarchitectural boundaries and molecular profiling.
Collapse
Affiliation(s)
- Lara Ianov
- Departments of Neuroscience and Genetics and Genomics Program, Evelyn F. and William L. McKnight Brain Institute, University of Florida, Gainesville, FL, United States.,Civitan International Research Center, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Matt De Both
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, United States
| | - Monica K Chawla
- Evelyn F. McKnight Brain Institute, University of Arizona, Tucson, AZ, United States
| | - Asha Rani
- Departments of Neuroscience and Genetics and Genomics Program, Evelyn F. and William L. McKnight Brain Institute, University of Florida, Gainesville, FL, United States
| | - Andrew J Kennedy
- Evelyn F. McKnight Brain Institute, University of Alabama, Birmingham, AL, United States
| | - Ignazio Piras
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, United States
| | - Jeremy J Day
- Evelyn F. McKnight Brain Institute, University of Alabama, Birmingham, AL, United States
| | - Ashley Siniard
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, United States
| | - Ashok Kumar
- Departments of Neuroscience and Genetics and Genomics Program, Evelyn F. and William L. McKnight Brain Institute, University of Florida, Gainesville, FL, United States
| | - J David Sweatt
- Evelyn F. McKnight Brain Institute, University of Alabama, Birmingham, AL, United States.,Department of Pharmacology, Vanderbilt University, Nashville, TN, United States
| | - Carol A Barnes
- Evelyn F. McKnight Brain Institute, University of Arizona, Tucson, AZ, United States.,Departments of Psychology, Neurology and Neuroscience, University of Arizona, Tucson, AZ, United States
| | - Matthew J Huentelman
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, United States.,Evelyn F. McKnight Brain Institute, University of Arizona, Tucson, AZ, United States
| | - Thomas C Foster
- Departments of Neuroscience and Genetics and Genomics Program, Evelyn F. and William L. McKnight Brain Institute, University of Florida, Gainesville, FL, United States
| |
Collapse
|
28
|
Kong L, Zhao Y, Zhou WJ, Yu H, Teng SW, Guo Q, Chen Z, Wang Y. Direct Neuronal Glucose Uptake Is Required for Contextual Fear Acquisition in the Dorsal Hippocampus. Front Mol Neurosci 2017; 10:388. [PMID: 29209168 PMCID: PMC5702440 DOI: 10.3389/fnmol.2017.00388] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 11/07/2017] [Indexed: 11/13/2022] Open
Abstract
The metabolism of glucose is a nearly exclusive source of energy for maintaining neuronal survival, synaptic transmission and information processing in the brain. Two glucose metabolism pathways have been reported, direct neuronal glucose uptake and the astrocyte-neuron lactate shuttle (ANLS), which can be involved in these functions simultaneously or separately. Although ANLS in the dorsal hippocampus (DH) has been proved to be required for memory consolidation, the specific metabolic pathway involved during memory acquisition remains unclear. The DH and amygdala are two key brain regions for acquisition of contextual fear conditioning (CFC). In 2-NBDG experiments, we observed that 2-NBDG-positive neurons were significantly increased during the acquisition of CFC in the DH. However, in the amygdala and cerebellum, 2-NBDG-positive neurons were not changed during CFC training. Strikingly, microinjection of a glucose transporter (GLUT) inhibitor into the DH decreased freezing values during CFC training and 1 h later, while injection of a monocarboxylate transporter (MCT) inhibitor into the amygdala also reduced freezing values. Therefore, we demonstrated that direct neuronal glucose uptake was the primary means of energy supply in the DH, while ANLS might supply energy in the amygdala during acquisition. Furthermore, knockdown of GLUT3 by a lentivirus in the DH impaired the acquisition of CFC. Taken together, the results indicated that there were two different glucose metabolism pathways in the DH and amygdala during acquisition of contextual fear memory and that direct neuronal glucose uptake in the DH may be regulated by GLUT3.
Collapse
Affiliation(s)
- Liang Kong
- Department of Cell and Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Science, Shandong University, Jinan, China.,Department of Clinical Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yan Zhao
- Department of Cell and Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Science, Shandong University, Jinan, China
| | - Wen-Juan Zhou
- Department of Cell and Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Science, Shandong University, Jinan, China
| | - Hui Yu
- Department of Cell and Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Science, Shandong University, Jinan, China
| | - Shuai-Wen Teng
- Department of Cell and Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Science, Shandong University, Jinan, China
| | - Qi Guo
- Department of Cell and Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Science, Shandong University, Jinan, China
| | - Zheyu Chen
- Department of Cell and Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Science, Shandong University, Jinan, China
| | - Yue Wang
- Department of Cell and Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Science, Shandong University, Jinan, China
| |
Collapse
|
29
|
Gong M, Huai Z, Song H, Cui L, Guo Q, Shao J, Gao Y, Shi H. Effects of maternal exposure to bisphenol AF on emotional behaviors in adolescent mice offspring. CHEMOSPHERE 2017; 187:140-146. [PMID: 28846969 DOI: 10.1016/j.chemosphere.2017.08.119] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/06/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
Exposure to bisphenol A (BPA), one kind of environmental endocrine disruptors (EEDs), exerted significantly detrimental effects on neuro-endocrinological system and related disorders, such as memory dysfunction and depression. Bisphenol AF (BPAF),a newly introduced chemical structurally related to BPA, is used extensively. BPAF has stronger estrogenic activities than BPA. However, the potential neurotoxicological effects of BPAF are still elusive. The present study aimed to investigate the potential effects of maternal BPAF exposure during pregnancy on emotional behaviors of adolescent mice offspring. In male adolescent offspring, maternal exposure to BPAF (0.4, 4.0 mg kg-1, intragastrically administration) induced significant anxiety- and depressive-like behaviors, assessed by open field test (OFT), novelty-suppressed feeding test (NSF), sucrose preference test (SPT), tail suspension test (TST) and forced swimming test (FST). In female adolescent offspring, BPAF exposure at 0.4 mg kg-1 dose reduced the latency to feeding in the NSF test, while increased the floating time in the FST. Maternal BPAF exposure decreased the recognition index in the long term memory (LTM) test in both sexes, while only decreased the freezing time of male offspring in the contextual fear conditioning (CFC) task. These results indicate that maternal exposure to BPAF significantly affect emotion-related behaviors in adolescent mice offspring, and the male offspring with a higher probability to develop symptoms of anxiety and depression and to suffer memory impairment after maternal exposure to BPAF.
Collapse
Affiliation(s)
- Miao Gong
- Department of Histology and Embryology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, 050017, China
| | - Ziqing Huai
- Grade 2013 Undergraduate, College of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, China
| | - Han Song
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Shijiazhuang, 050017, China
| | - Lingyu Cui
- Grade 2013 Undergraduate, College of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, China
| | - Qingjun Guo
- Department of Surgery, Hebei Medical University, Shijiazhuang, 050017, China
| | - Juan Shao
- Department of Senile Disease, The Third Hospital of Hebei Medical University, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yuan Gao
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Shijiazhuang, 050017, China.
| | - Haishui Shi
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Shijiazhuang, 050017, China.
| |
Collapse
|
30
|
Chen XR, Sun SC, Teng SW, Li L, Bie YF, Yu H, Li DL, Chen ZY, Wang Y. Uhrf2 deletion impairs the formation of hippocampus-dependent memory by changing the structure of the dentate gyrus. Brain Struct Funct 2017; 223:609-618. [DOI: 10.1007/s00429-017-1512-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Accepted: 09/06/2017] [Indexed: 12/15/2022]
|
31
|
Maheu ME, Ressler KJ. Developmental pathway genes and neural plasticity underlying emotional learning and stress-related disorders. Learn Mem 2017; 24:492-501. [PMID: 28814475 PMCID: PMC5580529 DOI: 10.1101/lm.044271.116] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 05/18/2017] [Indexed: 11/24/2022]
Abstract
The manipulation of neural plasticity as a means of intervening in the onset and progression of stress-related disorders retains its appeal for many researchers, despite our limited success in translating such interventions from the laboratory to the clinic. Given the challenges of identifying individual genetic variants that confer increased risk for illnesses like depression and post-traumatic stress disorder, some have turned their attention instead to focusing on so-called "master regulators" of plasticity that may provide a means of controlling these potentially impaired processes in psychiatric illnesses. The mammalian homolog of Tailless (TLX), Wnt, and the homeoprotein Otx2 have all been proposed to constitute master regulators of different forms of plasticity which have, in turn, each been implicated in learning and stress-related disorders. In the present review, we provide an overview of the changing distribution of these genes and their roles both during development and in the adult brain. We further discuss how their distinct expression profiles provide clues as to their function, and may inform their suitability as candidate drug targets in the treatment of psychiatric disorders.
Collapse
Affiliation(s)
- Marissa E Maheu
- Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, Massachusetts 02478, USA
| | - Kerry J Ressler
- Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, Massachusetts 02478, USA
| |
Collapse
|
32
|
Martin CG, Kim H, Yun S, Livingston W, Fetta J, Mysliwiec V, Baxter T, Gill JM. Circulating miRNA associated with posttraumatic stress disorder in a cohort of military combat veterans. Psychiatry Res 2017; 251:261-265. [PMID: 28222310 PMCID: PMC6065100 DOI: 10.1016/j.psychres.2017.01.081] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 12/12/2016] [Accepted: 01/28/2017] [Indexed: 01/03/2023]
Abstract
Posttraumatic stress disorder (PTSD) affects many returning combat veterans, but underlying biological mechanisms remain unclear. In order to compare circulating micro RNA (miRNA) of combat veterans with and without PTSD, peripheral blood from 24 subjects was collected following deployment, and isolated miRNA was sequenced. PTSD was associated with 8 differentially expressed miRNA. Pathway analysis shows that PTSD is related to the axon guidance and Wnt signaling pathways, which work together to support neuronal development through regulation of growth cones. PTSD is associated with miRNAs that regulate biological functions including neuronal activities, suggesting that they play a role in PTSD symptomatology.
Collapse
Affiliation(s)
- Christiana G Martin
- National Institutes of Nursing Research, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA.
| | - Hyungsuk Kim
- National Institutes of Nursing Research, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | | | - Whitney Livingston
- National Institutes of Nursing Research, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - Joseph Fetta
- National Institutes of Nursing Research, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - Vincent Mysliwiec
- Madigan Army Medical Center, 9040A Fitzsimmons Avenue, Tacoma, WA 98431, USA
| | - Tristin Baxter
- Madigan Army Medical Center, 9040A Fitzsimmons Avenue, Tacoma, WA 98431, USA
| | - Jessica M Gill
- National Institutes of Nursing Research, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA.
| |
Collapse
|
33
|
Piras IS, Krate J, Schrauwen I, Corneveaux JJ, Serrano GE, Sue L, Beach TG, Huentelman MJ. Whole transcriptome profiling of the human hippocampus suggests an involvement of the KIBRA rs17070145 polymorphism in differential activation of the MAPK signaling pathway. Hippocampus 2017; 27:784-793. [PMID: 28380666 DOI: 10.1002/hipo.22731] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 02/26/2017] [Accepted: 03/27/2017] [Indexed: 11/06/2022]
Abstract
The rs17070145-T variant of the WWC1 gene, coding for the KIBRA protein, has been associated with both increased episodic memory performance and lowered risk for late onset Alzheimer's disease, although the mechanism behind this protective effect has not been completely elucidated. To achieve a better understanding of the pathways modulated by rs17070145 and its associated functional variant(s), we used laser capture microdissection (LCM) and RNA-sequencing to investigate the effect of rs17070145 genotypes on whole transcriptome expression in the human hippocampus (HP) of 22 neuropathologically normal individuals, with a specific focus on the dentate gyrus (DG) and at the pyramidal cells (PC) of CA1 and CA3 sub-regions. Differential expression analysis of RNA-seq data within the HP based on the rs17070145 genotype revealed an overexpression of genes involved in the MAPK signaling pathway, potentially driven by the T/T genotype. The most important contribution comes from genes dysregulated within the DG region. Other genes significantly dysregulated, and not involved in the MAPK pathway (Adj P < 0.01 and Fold Change > |1.00|) were: RSPO4 (HP); ARC, DUSP5, DNAJB5, EGR4, PPP1R15A, WBP11P1, EGR1, GADD45B (DG); CH25H, HSPA1A, HSPA1B, TNFSF9, and NPAS4 (PC). Several evidences suggested that the MAPK signaling pathway is linked with memory and learning processes. In non-neuronal cells, the KIBRA protein is phosphorylated by ERK1/2 (involved in the MAPK signaling) in cells as well as in vitro. Several of the other dysregulated genes are involved in memory and learning processes, as well as in Alzheimer's Disease. In conclusion, our results suggest that the effect of the WWC1 rs17070145 polymorphism on memory performance and Alzheimer's disease might be due to a differential regulation of the MAPK signaling, a key pathway involved in memory and learning processes.
Collapse
Affiliation(s)
- Ignazio S Piras
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, Arizona, 85004
| | - Jonida Krate
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, Arizona, 85004
| | - Isabelle Schrauwen
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, Arizona, 85004
| | - Jason J Corneveaux
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, Arizona, 85004
| | - Geidy E Serrano
- Civin Laboratory of Neuropathology at Banner Sun Health Research Institute, Sun City, Arizona, 85351
| | - Lucia Sue
- Civin Laboratory of Neuropathology at Banner Sun Health Research Institute, Sun City, Arizona, 85351
| | - Thomas G Beach
- Civin Laboratory of Neuropathology at Banner Sun Health Research Institute, Sun City, Arizona, 85351
| | - Matthew J Huentelman
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, Arizona, 85004
| |
Collapse
|
34
|
HDAC7 Ubiquitination by the E3 Ligase CBX4 Is Involved in Contextual Fear Conditioning Memory Formation. J Neurosci 2017; 37:3848-3863. [PMID: 28283560 DOI: 10.1523/jneurosci.2773-16.2017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 02/24/2017] [Accepted: 03/01/2017] [Indexed: 12/18/2022] Open
Abstract
Histone acetylation, an epigenetic modification, plays an important role in long-term memory formation. Recently, histone deacetylase (HDAC) inhibitors were demonstrated to promote memory formation, which raises the intriguing possibility that they may be used to rescue memory deficits. However, additional research is necessary to clarify the roles of individual HDACs in memory. In this study, we demonstrated that HDAC7, within the dorsal hippocampus of C57BL6J mice, had a late and persistent decrease after contextual fear conditioning (CFC) training (4-24 h), which was involved in long-term CFC memory formation. We also showed that HDAC7 decreased via ubiquitin-dependent degradation. CBX4 was one of the HDAC7 E3 ligases involved in this process. Nur77, as one of the target genes of HDAC7, increased 6-24 h after CFC training and, accordingly, modulated the formation of CFC memory. Finally, HDAC7 was involved in the formation of other hippocampal-dependent memories, including the Morris water maze and object location test. The current findings facilitate an understanding of the molecular and cellular mechanisms of HDAC7 in the regulation of hippocampal-dependent memory.SIGNIFICANCE STATEMENT The current findings demonstrated the effects of histone deacetylase 7 (HDAC7) on hippocampal-dependent memories. Moreover, we determined the mechanism of decreased HDAC7 in contextual fear conditioning (CFC) through ubiquitin-dependent protein degradation. We also verified that CBX4 was one of the HDAC7 E3 ligases. Finally, we demonstrated that Nur77, as one of the important targets for HDAC7, was involved in CFC memory formation. All of these proteins, including HDAC7, CBX4, and Nur77, could be potential therapeutic targets for preventing memory deficits in aging and neurological diseases.
Collapse
|
35
|
Rizzo V, Touzani K, Raveendra BL, Swarnkar S, Lora J, Kadakkuzha BM, Liu XA, Zhang C, Betel D, Stackman RW, Puthanveettil SV. Encoding of contextual fear memory requires de novo proteins in the prelimbic cortex. BIOLOGICAL PSYCHIATRY: COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2017; 2:158-169. [PMID: 28503670 DOI: 10.1016/j.bpsc.2016.10.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Despite our understanding of the significance of the prefrontal cortex in the consolidation of long-term memories (LTM), its role in the encoding of LTM remains elusive. Here we investigated the role of new protein synthesis in the mouse medial prefrontal cortex (mPFC) in encoding contextual fear memory. METHODS Because a change in the association of mRNAs to polyribosomes is an indicator of new protein synthesis, we assessed the changes in polyribosome-associated mRNAs in the mPFC following contextual fear conditioning (CFC) in the mouse. Differential gene expression in mPFC was identified by polyribosome profiling (n = 18). The role of new protein synthesis in mPFC was determined by focal inhibition of protein synthesis (n = 131) and by intra-prelimbic cortex manipulation (n = 56) of Homer 3, a candidate identified from polyribosome profiling. RESULTS We identified several mRNAs that are differentially and temporally recruited to polyribosomes in the mPFC following CFC. Inhibition of protein synthesis in the prelimbic (PL), but not in the anterior cingulate cortex (ACC) region of the mPFC immediately after CFC disrupted encoding of contextual fear memory. Intriguingly, inhibition of new protein synthesis in the PL 6 hours after CFC did not impair encoding. Furthermore, expression of Homer 3, an mRNA enriched in polyribosomes following CFC, in the PL constrained encoding of contextual fear memory. CONCLUSIONS Our studies identify several molecular substrates of new protein synthesis in the mPFC and establish that encoding of contextual fear memories require new protein synthesis in PL subregion of mPFC.
Collapse
Affiliation(s)
- Valerio Rizzo
- Department of Neuroscience, The Scripps Research Institute, Scripps Florida 130 Scripps Way, Jupiter, FL 33458
| | - Khalid Touzani
- Department of Neuroscience, The Scripps Research Institute, Scripps Florida 130 Scripps Way, Jupiter, FL 33458
| | - Bindu L Raveendra
- Department of Neuroscience, The Scripps Research Institute, Scripps Florida 130 Scripps Way, Jupiter, FL 33458
| | - Supriya Swarnkar
- Department of Neuroscience, The Scripps Research Institute, Scripps Florida 130 Scripps Way, Jupiter, FL 33458
| | - Joan Lora
- Department of Psychology, Center for Complex Systems & Brain Sciences, College of Science, Florida Atlantic University, Jupiter, FL 33458
| | - Beena M Kadakkuzha
- Department of Neuroscience, The Scripps Research Institute, Scripps Florida 130 Scripps Way, Jupiter, FL 33458
| | - Xin-An Liu
- Department of Neuroscience, The Scripps Research Institute, Scripps Florida 130 Scripps Way, Jupiter, FL 33458
| | - Chao Zhang
- Department of Medicine and Institute for Computational Biomedicine, Weill Cornell Medical College, New York. NY10065. USA
| | - Doron Betel
- Department of Medicine and Institute for Computational Biomedicine, Weill Cornell Medical College, New York. NY10065. USA
| | - Robert W Stackman
- Department of Psychology, Center for Complex Systems & Brain Sciences, College of Science, Florida Atlantic University, Jupiter, FL 33458
| | | |
Collapse
|
36
|
Pulga A, Porte Y, Morel JL. Changes in C57BL6 Mouse Hippocampal Transcriptome Induced by Hypergravity Mimic Acute Corticosterone-Induced Stress. Front Mol Neurosci 2016; 9:153. [PMID: 28082866 PMCID: PMC5183579 DOI: 10.3389/fnmol.2016.00153] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 12/06/2016] [Indexed: 02/05/2023] Open
Abstract
Centrifugation is a widely used procedure to study the impact of altered gravity on Earth, as observed during spaceflights, allowing us to understand how a long-term physical constraint can condition the mammalian physiology. It is known that mice, placed in classical cages and maintained during 21 days in a centrifuge at 3G gravity level, undergo physiological adaptations due to hypergravity, and/or stress. Indeed, an increase of corticosterone levels has been previously measured in the plasma of 3G-exposed mice. Corticosterone is known to modify neuronal activity during memory processes. Although learning and memory performances cannot be assessed during the centrifugation, literature largely described a large panel of proteins (channels, second messengers, transcription factors, structural proteins) which expressions are modified during memory processing. Thus, we used the Illumina technology to compare the whole hippocampal transcriptome of three groups of C57Bl6/J mice, in order to gain insights into the effects of hypergravity on cerebral functions. Namely, a group of 21 days 3G-centrifuged mice was compared to (1) a group subjected to an acute corticosterone injection, (2) a group receiving a transdermal chronic administration of corticosterone during 21 days, and (3) aged mice because aging could be characterized by a decrease of hippocampus functions and memory impairment. Our results suggest that hypergravity stress induced by corticosterone administration and aging modulate the expression of genes in the hippocampus. However, the modulations of the transcriptome observed in these conditions are not identical. Hypergravity affects per-se the hippocampus transcriptome and probably modifies its activity. Hypergravity induced changes in hippocampal transcriptome were more similar to acute injection than chronic diffusion of corticosterone or aging.
Collapse
Affiliation(s)
- Alice Pulga
- Université de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293Bordeaux, France
- Centre National de la Recherche Scientifique, Institut des Maladies Neurodégénératives, UMR 5293Bordeaux, France
| | - Yves Porte
- Université de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293Bordeaux, France
- Centre National de la Recherche Scientifique, Institut des Maladies Neurodégénératives, UMR 5293Bordeaux, France
| | - Jean-Luc Morel
- Université de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293Bordeaux, France
- Centre National de la Recherche Scientifique, Institut des Maladies Neurodégénératives, UMR 5293Bordeaux, France
| |
Collapse
|
37
|
Abstract
Wnt signaling has emerged in recent years as a major player in both nervous system development and adult synaptic plasticity. Of particular relevance to researchers studying learning and memory, Wnt signaling is critical for normal functioning of the hippocampus, a brain region that is essential for many types of memory formation and whose dysfunction is implicated in numerous neurodegenerative and psychiatric conditions. Impaired hippocampal Wnt signaling is implicated in several of these conditions, however, little is known about how Wnt signaling mediates hippocampal memory formation. This review will provide a general overview of Wnt signaling and discuss evidence demonstrating a key role for Wnt signaling in hippocampal memory formation in both normal and disease states. The regulation of Wnt signaling by ovarian sex steroid hormones will also be highlighted, given that the neuroprotection afforded by Wnt-hormone interactions may have significant implications for cognitive function in aging, neurodegenerative disease, and ischemic injury.
Collapse
Affiliation(s)
- Ashley M Fortress
- Department of Psychology, University of Wisconsin-Milwaukee, WI, USA
| | - Karyn M Frick
- Department of Psychology, University of Wisconsin-Milwaukee, WI, USA
| |
Collapse
|
38
|
Quantitative proteomics reveals protein kinases and phosphatases in the individual phases of contextual fear conditioning in the C57BL/6J mouse. Behav Brain Res 2016; 303:208-17. [DOI: 10.1016/j.bbr.2015.12.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/14/2015] [Accepted: 12/18/2015] [Indexed: 12/20/2022]
|