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Desprez F, Ung DC, Vourc’h P, Jeanne M, Laumonnier F. Contribution of the dihydropyrimidinase-like proteins family in synaptic physiology and in neurodevelopmental disorders. Front Neurosci 2023; 17:1154446. [PMID: 37144098 PMCID: PMC10153444 DOI: 10.3389/fnins.2023.1154446] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 03/15/2023] [Indexed: 05/06/2023] Open
Abstract
The dihydropyrimidinase-like (DPYSL) proteins, also designated as the collapsin response mediators (CRMP) proteins, constitute a family of five cytosolic phosphoproteins abundantly expressed in the developing nervous system but down-regulated in the adult mouse brain. The DPYSL proteins were initially identified as effectors of semaphorin 3A (Sema3A) signaling and consequently involved in regulation of growth cone collapse in young developing neurons. To date, it has been established that DPYSL proteins mediate signals for numerous intracellular/extracellular pathways and play major roles in variety of cellular process including cell migration, neurite extension, axonal guidance, dendritic spine development and synaptic plasticity through their phosphorylation status. The roles of DPYSL proteins at early stages of brain development have been described in the past years, particularly for DPYSL2 and DPYSL5 proteins. The recent characterization of pathogenic genetic variants in DPYSL2 and in DPYSL5 human genes associated with intellectual disability and brain malformations, such as agenesis of the corpus callosum and cerebellar dysplasia, highlighted the pivotal role of these actors in the fundamental processes of brain formation and organization. In this review, we sought to establish a detailed update on the knowledge regarding the functions of DPYSL genes and proteins in brain and to highlight their involvement in synaptic processing in later stages of neurodevelopment, as well as their particular contribution in human neurodevelopmental disorders (NDDs), such as autism spectrum disorders (ASD) and intellectual disability (ID).
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Affiliation(s)
| | - Dévina C. Ung
- UMR1253, iBrain, Inserm, University of Tours, Tours, France
| | - Patrick Vourc’h
- UMR1253, iBrain, Inserm, University of Tours, Tours, France
- Service de Génétique, Centre Hospitalier Régional Universitaire, Tours, France
- Laboratoire de Biochimie et de Biologie Moléculaire, Centre Hospitalier Régional Universitaire, Tours, France
| | - Médéric Jeanne
- UMR1253, iBrain, Inserm, University of Tours, Tours, France
- Service de Génétique, Centre Hospitalier Régional Universitaire, Tours, France
| | - Frédéric Laumonnier
- UMR1253, iBrain, Inserm, University of Tours, Tours, France
- Service de Génétique, Centre Hospitalier Régional Universitaire, Tours, France
- *Correspondence: Frédéric Laumonnier,
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2
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Molecular Mechanism for PACAP 38-Induced Neurite Outgrowth in PC12 Cells. Neural Plast 2021; 2021:2522454. [PMID: 34422037 PMCID: PMC8371652 DOI: 10.1155/2021/2522454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/08/2021] [Accepted: 07/17/2021] [Indexed: 11/17/2022] Open
Abstract
The present research investigates the molecular mechanism of neurite outgrowth (protrusion elongation) under pituitary adenylate cyclase-activating polypeptide (PACAP) 38 treatments using a rat adrenal-derived pheochromocytoma cell line-PC12. This study specifically looks into the regulation of PACAP38-induced collapsing response mediator protein 2 (CRMP2) previously identified in a mouse brain ischemia model and which could be recovered by PACAP38 treatment. Previously, DNA microarray analysis revealed that PACAP 38-mediated neuroprotection involved not only CRMP2 but also pathways related to glycogen synthase kinase-3β (GSK-3β) and other signaling components. Thus, to clarify whether CRMP2 acts directly on PACAP38 or through GSK-3β as part of the mechanism of PACAP38-induced neurite outgrowth, we observed neurite outgrowth in the presence of GSK-3β inhibitors and activators. PC12 cells were treated with PACAP38 being added to the cell culture medium at concentrations of 10-7 M, 10-8 M, and 10-9 M. Post PACAP38 treatment, immunostaining was used to confirm protrusion elongation of the PC12 cells, while RT-PCR, two-dimensional gel electrophoresis in conjunction with Western blotting, and inhibition experiments were performed to confirm the expression of the PACAP gene, its receptors, and downstream signaling components. Our data show that neurite protrusion elongation by PACAP38 (10-7 M) in PC12 cells is mediated through the PAC1-R receptor as demonstrated by its suppression by a specific inhibitor PA-8. Inhibitor experiments suggested that PACAP38-triggered neurite protrusion follows a GSK-3β-regulated pathway, where the AKT and cAMP/ERK pathways are involved and where the inhibition of Rho/Roc could enhance neurite protrusion under PACAP38 stimulation. Although we could not yet confirm the exact role and position of CRMP2 in PACAP38-mediated PC12 cell elongation, it appears that its phosphorylation and dephosphorylation have a correlation with the neurite protrusion elongation through the interplay of CDK5, which needs to be investigated further.
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Chen X, Chen H, He Y, Fu S, Liu H, Wang Q, Shen J. Proteomics-Guided Study on Buyang Huanwu Decoction for Its Neuroprotective and Neurogenic Mechanisms for Transient Ischemic Stroke: Involvements of EGFR/PI3K/Akt/Bad/14-3-3 and Jak2/Stat3/Cyclin D1 Signaling Cascades. Mol Neurobiol 2020; 57:4305-4321. [PMID: 32700252 DOI: 10.1007/s12035-020-02016-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 07/08/2020] [Indexed: 01/22/2023]
Abstract
Buyang Huanwu Decoction (BHD), a classic traditional Chinese medicine (TCM) formula, has been used for recovering neurological dysfunctions and treating post-stroke disability in China for 200 years. In the present study, we investigated the effects of BHD on inhibiting neuronal apoptosis, promoting proliferation and differentiation of neural stem cells (NSCs) and neurite formation and enhancing learning and memory functional recovery in an experimental rat ischemic stroke model. BHD significantly reduced infarct volume and decreased cell apoptosis in the ischemic brain. BHD enhanced neuronal cell viability in vitro. BHD dose-dependently promoted the proliferation of NSCs in ischemic rat brains in vivo. Moreover, BHD promoted neuronal and astrocyte differentiation in primary cultured NSCs in vitro. Water maze test revealed that BHD promoted the recovery of learning function but not memory functions in the transient ischemic rats. We then investigated the changes of the cellular signaling molecules by using two-dimension (2D) gel electrophoresis and focused on the PI3K/Akt/Bad and Jak2/Stat3/cyclin D1signaling pathway to uncover its underlying mechanisms for its neuroprotective and neurogenetic effects. BHD significantly upregulated the expression of p-PI3K, p-Akt, and p-Bad as well as the expression of p-Jak, p-Stat3, and cyclin D1 in vitro and in vivo. In addition, BHD upregulated Hes1 and downregulated cav-1 in vitro and in vivo. Taken together, these results suggest that BHD has neuroprotective effects and neurogenesis-promoting effects via activating PI3K/Akt/Bad and Jak2/Stat3/Cyclin D1 signaling pathways. Graphical Abstract Buyang Huanwu Decoction (BHD) activates the PI3K-AKT-BAD pathway in the ischemic brain for neuroprotection. BHD also activates JAK2/STAT3/Cyclin D1 signaling cascades for promoting neurogenesis in the hippocampus of post-ischemic brains. Moreover, BHD inhibits the expression of caveolin-1 and increases the expression of HES1 for promoting neuronal differentiation. The neuroprotective and neurogenesis-promoting effects in the hippocampus of post-ischemic brains promote learning ability.
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Affiliation(s)
- Xi Chen
- Department of Core Facility, The People's Hospital of Bao-an Shenzhen, Shenzhen, China.,The 8th people's Hospital of Shenzhen, The Affiliated Bao-an Hospital of Southern Medical University, Shenzhen, 518000, China.,School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, Hong Kong SAR, China
| | - Hansen Chen
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, Hong Kong SAR, China
| | - Yachong He
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, Hong Kong SAR, China
| | - Shuping Fu
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, Hong Kong SAR, China.,Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Haosheng Liu
- Department of Core Facility, The People's Hospital of Bao-an Shenzhen, Shenzhen, China.,The 8th people's Hospital of Shenzhen, The Affiliated Bao-an Hospital of Southern Medical University, Shenzhen, 518000, China
| | - Qi Wang
- Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiangang Shen
- Department of Core Facility, The People's Hospital of Bao-an Shenzhen, Shenzhen, China. .,The 8th people's Hospital of Shenzhen, The Affiliated Bao-an Hospital of Southern Medical University, Shenzhen, 518000, China. .,School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, Hong Kong SAR, China.
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4
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Tu WL, Cheng CY, Chen CJ, Chan HL, Wang SH, Tang PC, Chen CF, Chen HH, Lee YP, Chen SE, Huang SY. Proteomic analysis of the hypothalamus of broiler-type Taiwan country chickens in response to acute heat stress. Anim Sci J 2018; 89:1475-1485. [PMID: 30125421 DOI: 10.1111/asj.13060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 05/01/2018] [Indexed: 01/02/2023]
Abstract
The hypothalamus is a critical center for regulating heat retention or dissipation. This study investigated global protein changes in the hypothalamus of broiler-type Taiwan country chickens (TCCs) after acute heat stress. Twelve TCC hens aged 30 weeks were allocated to groups subjected to acute heat stress at 38°C for 2 hr without recovery, with 2 hr of recovery, and with 6 hr of recovery; a control group was maintained at 25°C. Hypothalami were collected for protein expression analysis at the end of each time point. The results showed 114 protein spots differentially expressed after acute heat stress. Most of the differentially expressed proteins were involved in cellular processes, metabolism, transport, and cellular component organization. Functional annotation analysis suggested that these proteins were related to cellular defensive responses against heat and oxidative stress, detoxification and toxin export/delivery, cytoskeleton integrity, oxygen transport, and neural development. The results of this study suggest that acute heat stress damages the hypothalamus of broiler-type TCCs through oxidative stress and provokes a series of responses to stabilize protein structures, degrade misfolded proteins, and remodel cytoskeletons for attenuating the detrimental effects by acute heat stress.
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Affiliation(s)
- Wei-Lin Tu
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - Chuen-Yu Cheng
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - Chao-Jung Chen
- Proteomics Core Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan
| | - Hong-Lin Chan
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan.,Department of Medical Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Shih-Han Wang
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - Pin-Chi Tang
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,Center for the Integrative and Evolutionary Galliformes Genomics, iEGG Center, National Chung Hsing University, Taichung, Taiwan
| | - Chih-Feng Chen
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,Center for the Integrative and Evolutionary Galliformes Genomics, iEGG Center, National Chung Hsing University, Taichung, Taiwan
| | - Hsin-Hsin Chen
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - Yen-Pai Lee
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan
| | - Shuen-Ei Chen
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,Center for the Integrative and Evolutionary Galliformes Genomics, iEGG Center, National Chung Hsing University, Taichung, Taiwan
| | - San-Yuan Huang
- Department of Animal Science, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,Center for the Integrative and Evolutionary Galliformes Genomics, iEGG Center, National Chung Hsing University, Taichung, Taiwan.,Research Center for Sustainable Energy and Nanotechnology, National Chung Hsing University, Taichung, Taiwan
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5
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Drulis-Fajdasz D, Rakus D, Wiśniewski JR, McCubrey JA, Gizak A. Systematic analysis of GSK-3 signaling pathways in aging of cerebral tissue. Adv Biol Regul 2018; 69:35-42. [PMID: 29958836 DOI: 10.1016/j.jbior.2018.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
Glycogen synthase kinase-3 (GSK-3) is a constitutively active kinase, involved in regulation of multiple physiological processes. In brain, changes in GSK-3 signaling are related to neurodegenerative issues, including Alzheimer's disease. Due to the wide range of GSK-3 cellular targets, a therapeutic use of the enzyme inhibitors entails significant risk of side effects. Thus, altering the ratio of specific pool of GSK-3 or specific substrates instead of changing the global activity of GSK-3 in brains might be a more appropriate strategy. This paper provides a comprehensive data on abundances of proteins involved in GSK-3 signaling in three regions of young and old mouse brains. It might help to identify novel protein targets with the highest therapeutic potential for treatment of age-related neurodegenerative diseases.
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Affiliation(s)
- D Drulis-Fajdasz
- Department of Molecular Physiology and Neurobiology, Wroclaw University, Wroclaw, Poland
| | - D Rakus
- Department of Molecular Physiology and Neurobiology, Wroclaw University, Wroclaw, Poland
| | - J R Wiśniewski
- Biochemical Proteomics Group, Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - J A McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine at East Carolina University, Greenville, NC, 27858, USA
| | - A Gizak
- Department of Molecular Physiology and Neurobiology, Wroclaw University, Wroclaw, Poland.
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6
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CRMP2 and CRMP4 Are Differentially Required for Axon Guidance and Growth in Zebrafish Retinal Neurons. Neural Plast 2018; 2018:8791304. [PMID: 30034463 PMCID: PMC6032661 DOI: 10.1155/2018/8791304] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 04/17/2018] [Accepted: 05/14/2018] [Indexed: 12/15/2022] Open
Abstract
Axons are directed to their correct targets by guidance cues during neurodevelopment. Many axon guidance cues have been discovered; however, much less known is about how the growth cones transduce the extracellular guidance cues to intracellular responses. Collapsin response mediator proteins (CRMPs) are a family of intracellular proteins that have been found to mediate growth cone behavior in vitro; however, their roles in vivo in axon development are much less explored. In zebrafish embryos, we find that CRMP2 and CRMP4 are expressed in the retinal ganglion cell layer when retinal axons are crossing the midline. Knocking down CRMP2 causes reduced elongation and premature termination of the retinal axons, while knocking down CRMP4 results in ipsilateral misprojections of retinal axons that would normally project to the contralateral brain. Furthermore, CRMP4 synchronizes with neuropilin 1 in retinal axon guidance, suggesting that CRMP4 might mediate the semaphorin/neuropilin signaling pathway. These results demonstrate that CRMP2 and CRMP4 function differentially in axon development in vivo.
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7
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Shah FA, Park DJ, Koh PO. Identification of Proteins Differentially Expressed by Quercetin Treatment in a Middle Cerebral Artery Occlusion Model: A Proteomics Approach. Neurochem Res 2018; 43:1608-1623. [DOI: 10.1007/s11064-018-2576-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 06/06/2018] [Accepted: 06/14/2018] [Indexed: 02/06/2023]
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8
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Chen SL, Cai SR, Zhang XH, Li WF, Zhai ET, Peng JJ, Wu H, Chen CQ, Ma JP, Wang Z, He YL. Targeting CRMP-4 by lentivirus-mediated RNA interference inhibits SW480 cell proliferation and colorectal cancer growth. Exp Ther Med 2016; 12:2003-2008. [PMID: 27698685 PMCID: PMC5038199 DOI: 10.3892/etm.2016.3588] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Accepted: 02/02/2016] [Indexed: 12/14/2022] Open
Abstract
The aim of the present study was to investigate the expression level of collapsin response mediator protein 4 (CRMP-4) in human colorectal cancer (CRC) tissue and to evauluate its impact on SW480 cell proliferation, in addition to tumor growth in a mouse xenograft model. Clinical CRC tissue samples were collected to detect the CRMP-4 protein expression levels using western blot and immunohistochemistry analyses. A specific small interfering RNA sequence targeting the CRMP-4 gene (DPYSL3) was constructed and transfected into an SW480 cell line using a lentivirus vector to obtain a stable cell line with low expression of CRMP-4. The effectiveness of the interference was evaluated using western blot and reverse transcription-quantitative polymerase chain reaction, and the cell proliferation was determined using MTT and BrdU colorimetric methods. Tumor growth was assessed by subcutaneously inoculating the constructed cells into BALB/c nude mice. The protein expression levels of CRMP-4 were markedly increased in colon tumor tissue of the human samples. The proliferation of SW480 cells and the tumor growth rate in nude mice of the si-CPMR-4 group were evidently depressed compared with the si-scramble group. Thus, the present results suggest that CRMP-4 may be involved in the pathogenesis of CRC.
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Affiliation(s)
- Si-Le Chen
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Shi-Rong Cai
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Xin-Hua Zhang
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Wen-Feng Li
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Er-Tao Zhai
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Jian-Jun Peng
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Hui Wu
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Chuang-Qi Chen
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Jin-Ping Ma
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Zhao Wang
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Yu-Long He
- Department of Gastrointestinal and Pancreatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
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Fu Y, Zhao D, Pan B, Wang J, Cui Y, Shi F, Wang C, Yin X, Zhou X, Yang L. Proteomic Analysis of Protein Expression Throughout Disease Progression in a Mouse Model of Alzheimer's Disease. J Alzheimers Dis 2016; 47:915-26. [PMID: 26401771 DOI: 10.3233/jad-150312] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia. Mice in the transgenic AβPPswe/PS1dE9 mouse line express a chimeric mouse/human amyloid-β protein precursor (Mo/HuAβPP695swe) and mutant human presenilin 1 (PS1-dE9) associated with early-onset AD. Knowing the protein expression in these mice may offer better understanding of the pathological changes in AD. In this study, we used two-dimensional gel electrophoresis combined with mass spectrometry techniques to compare protein expression in AβPPswe/PS1dE9 mice with age-matched wild-type mice throughout the disease progression. We identified 15 proteins that were significantly different between the AβPPswe/PS1dE9 mice and age-matched controls and also changed with disease development. Among those, the expression levels of the following proteins in AβPPswe/PS1dE9 mice were at least 1.5 times higher than those in normal mice: DCC-interacting protein 13-beta, serum albumin, creatine kinase B-type, heat shock 70 kDa protein 1A, T-complex protein 1 subunit beta, adenylate kinase isoenzyme 1, pyruvate dehydrogenase E1 component subunit beta mitochondrial, and V-type proton ATPase catalytic subunit A. Levels of the following proteins in AβPPswe/PS1dE9 mice were at least 1.5 times lower than those in normal mice: dihydropyrimidinase-related protein 2, actin cytoplasmic 2, isoform 1 of V-type proton ATPase catalytic subunit, tubulin alpha-1C chain, F-actin-capping protein subunit alpha-2, ubiquitin carboxyl-terminal hydrolase isozyme L1, and actin cytoplasmic 1. These proteins are involved in regulating various cellular functions, including cytoskeletal structure, energy metabolism, synaptic components, and protein degradation. These findings indicate altered protein expression in the pathogenesis of AD and illuminate novel therapeutic avenues for treatment in AD.
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Affiliation(s)
- Yongyao Fu
- State Key Laboratories for Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Deming Zhao
- State Key Laboratories for Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Bo Pan
- Division of Basic Biomedical Sciences, Sanford School of Medicine of the University of South Dakota, Vermillion, South Dakota, USA
| | - Jihong Wang
- State Key Laboratories for Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yongyong Cui
- State Key Laboratories for Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Fushan Shi
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Chunyu Wang
- State Key Laboratories for Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xiaoming Yin
- State Key Laboratories for Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xiangmei Zhou
- State Key Laboratories for Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Lifeng Yang
- State Key Laboratories for Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
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10
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Tonouchi A, Nagai J, Togashi K, Goshima Y, Ohshima T. Loss of collapsin response mediator protein 4 suppresses dopaminergic neuron death in an 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced mouse model of Parkinson's disease. J Neurochem 2016; 137:795-805. [PMID: 26991935 DOI: 10.1111/jnc.13617] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 02/26/2016] [Accepted: 03/07/2016] [Indexed: 12/13/2022]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder that is characterized by the selective loss of dopaminergic neurons in the substantia nigra pars compacta (SNc). Several lines of evidence suggest that neurodegeneration in PD is accelerated by a vicious cycle in which apoptosis in dopaminergic neurons triggers the activation of microglia and harmful inflammatory processes that further amplify neuronal death. Recently, we demonstrated that the deletion of collapsin response mediator protein 4 (CRMP4) suppresses inflammatory responses and cell death in a mouse model of spinal cord injury, leading to improved functional recovery. We thus hypothesized that Crmp4-/- mice may have limited inflammatory responses and a decrease in the loss of SNc dopaminergic neurons in an 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD mouse model. We observed CRMP4 expression in neurons, astrocytes, and microglia/macrophages following the injection of 25 mg/kg MPTP. We compared the number of dopaminergic neurons and the inflammatory response in SNc between Crmp4+/+ and Crmp4-/- mice after MPTP injection. Limited loss of SNc dopaminergic neurons and decreased activations of microglia and astrocytes were observed in Crmp4-/- mice. These results suggest that CRMP4 is a novel therapeutic target in the treatment of PD patients. We demonstrated that genetic CRMP4 deletion delays a vicious cycle of inflammation and neurodegeneration in a Parkinson's disease mouse model. MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) injection to wild-type mice induces collapsin response mediator protein 4 (CRMP4) up-regulation in neurons, astrocytes, and microglia. CRMP4-deficient mice show reduced inflammation and suppressed dopaminergic neuronal death after MPTP injection. These findings suggest that CRMP4 deletion may be a new therapeutic strategy against Parkinson's diseases.
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Affiliation(s)
- Aine Tonouchi
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Jun Nagai
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Kentaro Togashi
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Yoshio Goshima
- Department of Molecular Pharmacology and Neurobiology, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - Toshio Ohshima
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
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11
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Aravidou E, Eleftheriades M, Malamitsi-Puchner A, Anagnostopoulos AK, Aravantinos L, Dontas I, Aravidis C, Creatsas G, Tsangaris G, Chrousos GP. Protein expression in the brain of rat offspring in relation to prenatal caloric restriction. J Matern Fetal Neonatal Med 2015; 29:2707-14. [PMID: 26515516 DOI: 10.3109/14767058.2015.1102222] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Intrauterine growth restriction (IUGR) has been associated with decreased supply of crucial substrates to the fetus and affects its growth and development by temporarily or permanently modifying gene expression and function. However, not all neonates born by calorie restricted mothers are IUGR and there are no reports regarding their brain protein expression vis-à-vis that of their IUGR siblings. Here, we investigated the expression of key proteins that regulate growth and development of the brain in non-IUGR newborn pups versus IUGR siblings and control pups. METHODS Rat brain proteins were isolated from each group upon delivery and separated by two-dimensional gel electrophoresis (2-DE). RESULTS 14-3-3 Protein, calreticulin, elongation factor, alpha-enolase, fascin, heat-shock protein HSP90 and pyruvate kinase isozymes were significantly increased (p < 0.05) in samples obtained from IUGR newborn pups compared to non-IUGR. Conversely, collapsin response mediator proteins, heat-shock70 and peroxiredoxin2 were decreased in IUGR group compared to non-IUGR. CONCLUSIONS In our experimental study, IUGR pups showed an altered proteomic profile compared to their non-IUGR siblings and non-IUGR controls. Thus, not all offspring of calorie-restricted mothers become IUGR with the accompanying alterations in the expression of proteins. The differentially expressed proteins could modulate alterations in the energy balance, plasticity and maturation of the brain.
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Affiliation(s)
- Eftychia Aravidou
- a First Department of Pediatrics and.,b Second Department of Obstetrics and Gynecology, Medical School , University of Athens , Greece
| | - Makarios Eleftheriades
- a First Department of Pediatrics and.,c Embryocare, Fetal Medicine Unit , Athens , Greece
| | - Ariadne Malamitsi-Puchner
- d Division of Neonatology , Second Department of Obstetrics and Gynecology, Medical School, University of Athens, Aretaieion Hospital , Athens , Greece
| | - Athanassios K Anagnostopoulos
- e Proteomics Research Unit, Center of Basic Research II, Biomedical Research Foundation of the Academy of Athens , Greece
| | - Leon Aravantinos
- b Second Department of Obstetrics and Gynecology, Medical School , University of Athens , Greece
| | - Ismene Dontas
- f Laboratory For Research of the Musculoskeletal System , School of Medicine, University of Athens , Greece
| | - Christos Aravidis
- g Cytogenetics Unit of Critical Care Department, Medical School, University of Athens , Greece
| | - Georgios Creatsas
- b Second Department of Obstetrics and Gynecology, Medical School , University of Athens , Greece
| | - Georgios Tsangaris
- e Proteomics Research Unit, Center of Basic Research II, Biomedical Research Foundation of the Academy of Athens , Greece
| | - Georgios P Chrousos
- a First Department of Pediatrics and.,h Clinical Research Centre, Laboratory of Endocrinology and Metabolism, Biomedical Research Foundation of the Academy of Athens , Greece
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12
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Shioda S, Nakamachi T. PACAP as a neuroprotective factor in ischemic neuronal injuries. Peptides 2015; 72:202-7. [PMID: 26275482 DOI: 10.1016/j.peptides.2015.08.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 08/06/2015] [Accepted: 08/06/2015] [Indexed: 10/23/2022]
Abstract
Pituitary adenylate cyclase-activating polypeptide (PACAP) is a 27- or 38-amino acid neuropeptide, which belongs to the vasoactive intestinal polypeptide/glucagon/secretin family. PACAP and its three receptor subtypes are expressed in neural tissues, with PACAP known to exert pleiotropic effects on the nervous system. This review provides an overview of current knowledge regarding the neuroprotective effects, mechanisms of action, and therapeutic potential of PACAP in response to ischemic brain injuries.
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Affiliation(s)
- Seiji Shioda
- Global Research Center for Innovative Life Science, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
| | - Tomoya Nakamachi
- Laboratory of Regulatory Biology, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
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13
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Martins-de-Souza D, Cassoli JS, Nascimento JM, Hensley K, Guest PC, Pinzon-Velasco AM, Turck CW. The protein interactome of collapsin response mediator protein-2 (CRMP2/DPYSL2) reveals novel partner proteins in brain tissue. Proteomics Clin Appl 2015; 9:817-31. [PMID: 25921334 DOI: 10.1002/prca.201500004] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/23/2015] [Accepted: 04/27/2015] [Indexed: 01/18/2023]
Abstract
PURPOSE Collapsin response mediator protein-2 (CRMP2) is a CNS protein involved in neuronal development, axonal and neuronal growth, cell migration, and protein trafficking. Recent studies have linked perturbations in CRMP2 function to neurodegenerative disorders such as Alzheimer's disease, neuropathic pain, and Batten disease, and to psychiatric disorders such as schizophrenia. Like most proteins, CRMP2 functions though interactions with a molecular network of proteins and other molecules. EXPERIMENTAL DESIGN Here, we have attempted to identify additional proteins of the CRMP2 interactome to provide further leads about its roles in neurological functions. We used a combined co-immunoprecipitation and shotgun proteomic approach in order to identify CRMP2 protein partners. RESULTS We identified 78 CRMP2 protein partners not previously reported in public protein interaction databases. These were involved in seven biological processes, which included cell signaling, growth, metabolism, trafficking, and immune function, according to Gene Ontology classifications. Furthermore, 32 different molecular functions were found to be associated with these proteins, such as RNA binding, ribosomal functions, transporter activity, receptor activity, serine/threonine phosphatase activity, cell adhesion, cytoskeletal protein binding and catalytic activity. In silico pathway interactome construction revealed a highly connected network with the most overrepresented functions corresponding to semaphorin interactions, along with axon guidance and WNT5A signaling. CONCLUSIONS AND CLINICAL RELEVANCE Taken together, these findings suggest that the CRMP2 pathway is critical for regulating neuronal and synaptic architecture. Further studies along these lines might uncover novel biomarkers and drug targets for use in drug discovery.
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Affiliation(s)
- Daniel Martins-de-Souza
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil.,UNICAMP's Neurobiology Center, Campinas, Brazil
| | - Juliana S Cassoli
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Juliana M Nascimento
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil.,D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | - Kenneth Hensley
- Department of Pathology, University of Toledo, Toledo, OH, USA.,Department of Neurosciences, University of Toledo, Toledo, OH, USA
| | - Paul C Guest
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Andres M Pinzon-Velasco
- Bioinformatics and Computational Systems Biology Group, Institute for Genetics, National University of Colombia, Bogotá, Colombia
| | - Christoph W Turck
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
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14
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Tokuda K, Kuramitsu Y, Byron B, Kitagawa T, Tokuda N, Kobayashi D, Nagayama M, Araki N, Sonoda KH, Nakamura K. Up-regulation of DRP-3 long isoform during the induction of neural progenitor cells by glutamate treatment in the ex vivo rat retina. Biochem Biophys Res Commun 2015; 463:593-9. [DOI: 10.1016/j.bbrc.2015.05.102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 05/29/2015] [Indexed: 10/23/2022]
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15
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Li KKW, Qi Y, Xia T, Yao Y, Zhou L, Lau KM, Ng HK. CRMP1 Inhibits Proliferation of Medulloblastoma and Is Regulated by HMGA1. PLoS One 2015; 10:e0127910. [PMID: 26009886 PMCID: PMC4444180 DOI: 10.1371/journal.pone.0127910] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 04/21/2015] [Indexed: 11/18/2022] Open
Abstract
Many facets of the tumor biology of medulloblastoma (MB) have not been fully elucidated. Collapsin response mediator protein 1 (CRMP1) is a member of cytoplasmic family of proteins that regulate the development of central nervous system. Recent studies demonstrated that CRMP1 could function as an invasion suppressor. We reported previously that high mobility group AT-hook 1 (HMGA1) contributed to development of MB and regulated its growth and migration/invasion. Transcriptional profiling and quantitative RT-PCR revealed increased expression of CRMP1 in HMGA1-depleted cells, suggesting that CRMP1 may be a downstream target of HMGA1 in MB. In this study, we showed HMGA1 can bind CRMP1 promoter by chromatin immunoprecipitation (ChIP) assay. Luciferase assay demonstrated a marked enhancement of CRMP1 transcription activity in HMGA1-depleted cells. Furthermore, quantitative RT-PCR revealed a negative correlation between HMGA1 and CRMP1 in 32 MB samples. To investigate the biological roles of CRMP1 in MB pathogenesis, we established MB clones stably expressing CRMP1. Functional analysis revealed that expression of CRMP1 significantly inhibited proliferation, migration, invasion and formation of filopodia and intense stress fiber of MB cells. Our data suggest that HMGA1 regulates CRMP1 expression and CRMP1 is implicated in MB pathogenesis.
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Affiliation(s)
- Kay Ka-Wai Li
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong, Prince of Wales Hospital, 30–32 Ngan Shing Street, Shatin, Hong Kong, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, No.10, 2nd Yuexing Road, Nanshan District, Shenzhen, China
| | - Yan Qi
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong, Prince of Wales Hospital, 30–32 Ngan Shing Street, Shatin, Hong Kong, China
| | - Tian Xia
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong, Prince of Wales Hospital, 30–32 Ngan Shing Street, Shatin, Hong Kong, China
| | - Yu Yao
- Department of Neurosurgery, Huashan Hospital, Fudan University, Wulumuqi Zhong Road 12, Shanghai, China
| | - Liangfu Zhou
- Department of Neurosurgery, Huashan Hospital, Fudan University, Wulumuqi Zhong Road 12, Shanghai, China
| | - Kin-Mang Lau
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong, Prince of Wales Hospital, 30–32 Ngan Shing Street, Shatin, Hong Kong, China
- * E-mail: (H-KN); (K-ML)
| | - Ho-Keung Ng
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong, Prince of Wales Hospital, 30–32 Ngan Shing Street, Shatin, Hong Kong, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, No.10, 2nd Yuexing Road, Nanshan District, Shenzhen, China
- * E-mail: (H-KN); (K-ML)
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16
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Impairment of enzymatic antioxidant defenses is associated with bilirubin-induced neuronal cell death in the cerebellum of Ugt1 KO mice. Cell Death Dis 2015; 6:e1739. [PMID: 25950469 PMCID: PMC4669693 DOI: 10.1038/cddis.2015.113] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 03/16/2015] [Accepted: 03/18/2015] [Indexed: 01/14/2023]
Abstract
Severe hyperbilirubinemia is toxic during central nervous system development. Prolonged and uncontrolled high levels of unconjugated bilirubin lead to bilirubin-induced encephalopathy and eventually death by kernicterus. Despite extensive studies, the molecular and cellular mechanisms of bilirubin toxicity are still poorly defined. To fill this gap, we investigated the molecular processes underlying neuronal injury in a mouse model of severe neonatal jaundice, which develops hyperbilirubinemia as a consequence of a null mutation in the Ugt1 gene. These mutant mice show cerebellar abnormalities and hypoplasia, neuronal cell death and die shortly after birth because of bilirubin neurotoxicity. To identify protein changes associated with bilirubin-induced cell death, we performed proteomic analysis of cerebella from Ugt1 mutant and wild-type mice. Proteomic data pointed-out to oxidoreductase activities or antioxidant processes as important intracellular mechanisms altered during bilirubin-induced neurotoxicity. In particular, they revealed that down-representation of DJ-1, superoxide dismutase, peroxiredoxins 2 and 6 was associated with hyperbilirubinemia in the cerebellum of mutant mice. Interestingly, the reduction in protein levels seems to result from post-translational mechanisms because we did not detect significant quantitative differences in the corresponding mRNAs. We also observed an increase in neuro-specific enolase 2 both in the cerebellum and in the serum of mutant mice, supporting its potential use as a biomarker of bilirubin-induced neurological damage. In conclusion, our data show that different protective mechanisms fail to contrast oxidative burst in bilirubin-affected brain regions, ultimately leading to neurodegeneration.
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17
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Liu W, Li J, Liu M, Zhang H, Wang N. PPAR-γ Promotes Endothelial Cell Migration By Inducing the Expression of Sema3g. J Cell Biochem 2015; 116:514-23. [DOI: 10.1002/jcb.24994] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 10/14/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Weiwei Liu
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences; Ministry of Education; Peking University Health Science Center; Beijing China
| | - Jingjin Li
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences; Ministry of Education; Peking University Health Science Center; Beijing China
- Department of Cardiology; Peking University People's Hospital; Beijing China
| | - Min Liu
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences; Ministry of Education; Peking University Health Science Center; Beijing China
| | - Hong Zhang
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences; Ministry of Education; Peking University Health Science Center; Beijing China
| | - Nanping Wang
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences; Ministry of Education; Peking University Health Science Center; Beijing China
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18
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Doh MS, Han DMR, Oh DH, Kim SH, Choi MR, Chai YG. Profiling of Proteins Regulated by Venlafaxine during Neural Differentiation of Human Cells. Psychiatry Investig 2015; 12:81-91. [PMID: 25670950 PMCID: PMC4310925 DOI: 10.4306/pi.2015.12.1.81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 03/07/2014] [Accepted: 03/25/2014] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE Antidepressants are known to positively influence several factors in patients with depressive disorders, resulting in increased neurogenesis and subsequent relief of depressive disorders. To study the effects of venlafaxine during neural differentiation at the cellular level, we looked at its effect on protein expression and regulation mechanisms during neural differentiation. METHODS After exposing NCCIT cell-derived EBs to venlafaxine during differentiation (1 day and 7 days), changes in protein expression were analyzed by 2-DE and MALDI-TOF MS analysis. Gene levels of proteins regulated by venlafaxine were analyzed by real-time RT-PCR. RESULTS Treatment with venlafaxine decreased expression of prolyl 4-hydroxylase (P4HB), ubiquitin-conjugating enzyme E2K (HIP2) and plastin 3 (T-plastin), and up-regulated expression of growth factor beta-3 (TGF-β3), dihydropyrimidinase-like 3 (DPYSL3), and pyruvate kinase (PKM) after differentiation for 1 and 7 days. In cells exposed to venlafaxine, the mRNA expression patterns of HIP2 and PKM, which function as negative and positive regulators of differentiation and neuronal survival, respectively, were consistent with the observed changes in protein expression. CONCLUSION Our findings may contribute to improve understanding of molecular mechanism of venlafaxine.
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Affiliation(s)
- Mi Sook Doh
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Dal Mu Ri Han
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Dong Hoon Oh
- Department of Neuropsychiatry, College of Medicine and Institute of Mental Health, Hanyang University, Seoul, Republic of Korea
| | - Seok Hyeon Kim
- Department of Neuropsychiatry, College of Medicine and Institute of Mental Health, Hanyang University, Seoul, Republic of Korea
| | - Mi Ran Choi
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Young Gyu Chai
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
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19
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Niu R, Liu S, Wang J, Zhang J, Sun Z, Wang J. Proteomic analysis of hippocampus in offspring male mice exposed to fluoride and lead. Biol Trace Elem Res 2014; 162:227-33. [PMID: 25260320 DOI: 10.1007/s12011-014-0117-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 08/27/2014] [Indexed: 12/19/2022]
Abstract
Fluoride and lead are two common pollutants in the environment. Previous investigations have found that high fluoride exposure can increase the lead burden. In this experiment, in order to study on the molecular mechanisms of central neural system injury induced by the above two elements, differently expressed protein spots in hippocampus of male mice treated with 150 mg sodium fluoride/L and/or 300 mg lead acetate/L in their drinking water were detected by two-dimensional electrophoresis (2-DE) and mass spectrometry (MS). The behavior tests showed that 56 days of fluoride and lead administration significantly reduced the vertical activity and lowered the memory ability of mice. In addition, results of 2-DE and MS revealed that nine spots demonstrated above a twofold change in the same trend in all treatment groups, which were mainly related with (1) energy metabolism, (2) cell stress response/chaperones, (3) cytoskeleton development, (4) protein metabolism, and (5) cell surface signal transduction. The findings could provide potential biomarkers for lesion in nervous system induced by fluoride and lead exposure.
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Affiliation(s)
- Ruiyan Niu
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu, Shanxi, China,
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20
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PACAP38 differentially effects genes and CRMP2 protein expression in ischemic core and penumbra regions of permanent middle cerebral artery occlusion model mice brain. Int J Mol Sci 2014; 15:17014-34. [PMID: 25257527 PMCID: PMC4200817 DOI: 10.3390/ijms150917014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 09/05/2014] [Accepted: 09/10/2014] [Indexed: 11/17/2022] Open
Abstract
Pituitary adenylate-cyclase activating polypeptide (PACAP) has neuroprotective and axonal guidance functions, but the mechanisms behind such actions remain unclear. Previously we examined effects of PACAP (PACAP38, 1 pmol) injection intracerebroventrically in a mouse model of permanent middle cerebral artery occlusion (PMCAO) along with control saline (0.9% NaCl) injection. Transcriptomic and proteomic approaches using ischemic (ipsilateral) brain hemisphere revealed differentially regulated genes and proteins by PACAP38 at 6 and 24 h post-treatment. However, as the ischemic hemisphere consisted of infarct core, penumbra, and non-ischemic regions, specificity of expression and localization of these identified molecular factors remained incomplete. This led us to devise a new experimental strategy wherein, ischemic core and penumbra were carefully sampled and compared to the corresponding contralateral (healthy) core and penumbra regions at 6 and 24 h post PACAP38 or saline injections. Both reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting were used to examine targeted gene expressions and the collapsin response mediator protein 2 (CRMP2) protein profiles, respectively. Clear differences in expression of genes and CRMP2 protein abundance and degradation product/short isoform was observed between ischemic core and penumbra and also compared to the contralateral healthy tissues after PACAP38 or saline treatment. Results indicate the importance of region-specific analyses to further identify, localize and functionally analyse target molecular factors for clarifying the neuroprotective function of PACAP38.
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21
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Qiao C, Wang C, Jin F, Zheng D, Liu C. Expression of collapsin response mediator protein 1 in placenta of normal gestation and link to early-onset preeclampsia. Reprod Sci 2014; 22:495-501. [PMID: 25194153 DOI: 10.1177/1933719114549847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A human isoform of Collapsin Response Mediator Protein (CRMP) family proteins, CRMP-1, has been identified as a novel invasion suppressor. The aim of this study was to determine CRMP-1 expression pattern in placentas during normal pregnancy and elucidate the clinical significance of CRMP-1 expression in the placentas of women with early-onset preeclamptic pregnancies. We recruited 66 normal healthy pregnant Chinese women and 60 Chinese patients with preeclampsia [early-onset prereclampsia(ePE), n = 30 and late-onset preeclampsia(lPE) n = 30]. Gestational age-matched normal healthy pregnant women were used as controls of early-onset and late-onset preeclampsia, which were 23-33 + 6 weeks, n = 18 and control B: 34-40 weeks, n = 20). Quantitative RT-PCR, Western blot analysis and immunohistochemistry were used to analyze the expressions of CRMP-1 in placentas. Expression of CRMP-1 was detected in syncytio- and cytotrophoblasts of all groups using immunohistochemistry. CRMP-1 was most abundantly expressed in syncytiotrophoblasts, moderately in cytotrophoblasts and the intermediate trophoblasts especially in the first trimester. The placental expression of CRMP-1 is particularly striking in the first trimester and decreases throughout pregnancy. There is a significant increase in CRMP-1 expression in the placenta of ePE but not of lPE, as compared to gestational-matched controls. The aberrant upregulation of CRMP-1 expression may link to the mechanism of developing ePE.
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Affiliation(s)
- Chong Qiao
- Department of Obstetrics and Gynecology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Chunhui Wang
- Department of Hepatobiliary Surgery, General Hospital of Shenyang Military Region, Shenyang, China
| | - Feng Jin
- Department of Obstetrics and Gynecology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Dongying Zheng
- Department of Obstetrics and Gynecology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Caixia Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital, China Medical University, Shenyang, China
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Shah FA, Gim SA, Kim MO, Koh PO. Proteomic identification of proteins differentially expressed in response to resveratrol treatment in middle cerebral artery occlusion stroke model. J Vet Med Sci 2014; 76:1367-74. [PMID: 24998396 PMCID: PMC4221170 DOI: 10.1292/jvms.14-0169] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Resveratrol has a
neuroprotective effect against cerebral ischemia. The objective of this study was to
identify proteins that are differentially expressed in the cerebral cortex of vehicle- and
resveratrol-treated animals during ischemic injury. Focal cerebral ischemia was induced as
middle cerebral artery occlusion (MCAO) in male rats. Rats were treated with vehicle or
resveratrol before MCAO, and cerebral cortex was collected 24 hr after MCAO. Cerebral
cortex proteins were identified by two-dimensional gel electrophoresis and mass
spectrometry. Several proteins were identified as differentially expressed between
vehicle- and resveratrol-treated animals. Among these proteins, expression of
peroxiredoxin-5, isocitrate dehydrogenase [NAD+], apolipoprotein A-I and
ubiquitin carboxy terminal hydrolase L1 was decreased in the vehicle-treated group,
whereas resveratrol attenuated the injury-induced decrease in expression of these
proteins. However, expression of collapsing response mediator protein 2 was increased in
the vehicle-treated group, whereas resveratrol prevented the injury-induced increase in
the expression of this protein. These findings suggest that resveratrol modulates the
expression of various proteins that associated with oxidative stress and energy metabolism
in focal cerebral ischemia.
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Affiliation(s)
- Fawad-Ali Shah
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
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Gelé P, Vingtdeux V, Potey C, Drobecq H, Ghestem A, Melnyk P, Buée L, Sergeant N, Bordet R. Recovery of brain biomarkers following peroxisome proliferator-activated receptor agonist neuroprotective treatment before ischemic stroke. Proteome Sci 2014; 12:24. [PMID: 24944524 PMCID: PMC4061923 DOI: 10.1186/1477-5956-12-24] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 05/01/2014] [Indexed: 01/08/2023] Open
Abstract
Background Lipid lowering agent such as agonists of peroxisome proliferator-activated receptors (PPAR) are suggested as neuroprotective agents and may protect from the sequelae of brain ischemic stroke. Although the demonstration is not clearly established in human, the underlying molecular mechanism may be of interest for future therapeutic purposes. To this end, we have used our well established rodent model of ischemia-reperfusion pre-treated or not with fenofibrate or atorvastatin and performed a differential proteomics analyses of the brain and analysed the protein markers which levels returned to “normal” following pre-treatments with PPARα agonists. Results In order to identify potential therapeutic targets positively modulated by pre-treatment with the PPARα agonists, two-dimensional gel electrophoresis proteome profiles between control, ischemia-reperfusion and pre-treated or not, were compared. The polypeptide which expression was altered following ischemia – reperfusion but whose levels remain unchanged after pre-treatment were characterized by mass spectrometry and further investigated by Western-blotting and immunohistochemistry. A series of 28 polypeptides were characterized among which the protein disulfide isomerase reduction – a protein instrumental to the unfolded protein response system - was shown to be reduced following PPARα agonists treatment while it was strongly increased in ischemia-reperfusion. Conclusions Pre-treatment with PPARα agonist or atorvastatin show potential neuroprotective effects by inhibiting the PDI overexpression in conjunction with the preservation of other neuronal markers, several of which are associated with the regulation of protein homeostasis, signal transduction and maintenance of synaptic plasticity. This proteomic study therefore suggests that neuroprotective effect of PPARα agonists supposes the preservation of the expression of several proteins essential for the maintenance of protein homeostasis not necessarily directly linked to PPARα known-regulated targets.
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Affiliation(s)
- Patrick Gelé
- Clinical Investigation center, IMPRT, University of Lille II, Cardiologic Hospital, Lille, France ; Inserm UMR 837, JPARC, Place de Verdun, Lille 59045, France ; PRES University Lille Nord de France, University of Lille II, Jean-Pierre Aubert Research Center, Institute of Predictive Medicine and Therapeutic Research, Lille IFR114, France ; EA1046 - Department de Pharmacology - University of Lille 2, University Hospital Centre Place de Verdun, Lille, France
| | - Valérie Vingtdeux
- Inserm UMR 837, JPARC, Place de Verdun, Lille 59045, France ; PRES University Lille Nord de France, University of Lille II, Jean-Pierre Aubert Research Center, Institute of Predictive Medicine and Therapeutic Research, Lille IFR114, France
| | - Camille Potey
- EA1046 - Department de Pharmacology - University of Lille 2, University Hospital Centre Place de Verdun, Lille, France
| | - Hervé Drobecq
- PRES University Lille Nord de France, University of Lille II, Jean-Pierre Aubert Research Center, Institute of Predictive Medicine and Therapeutic Research, Lille IFR114, France ; UMR 8161 CNRS, Biomolecules and Micro-nanotechnologies laboratory - University of Lille 2 - University of Lille 1 - Pasteur Institute of Lille, Lille, France
| | | | - Patricia Melnyk
- PRES University Lille Nord de France, University of Lille II, Jean-Pierre Aubert Research Center, Institute of Predictive Medicine and Therapeutic Research, Lille IFR114, France ; UMR 8161 CNRS, Biomolecules and Micro-nanotechnologies laboratory - University of Lille 2 - University of Lille 1 - Pasteur Institute of Lille, Lille, France
| | - Luc Buée
- Inserm UMR 837, JPARC, Place de Verdun, Lille 59045, France ; PRES University Lille Nord de France, University of Lille II, Jean-Pierre Aubert Research Center, Institute of Predictive Medicine and Therapeutic Research, Lille IFR114, France
| | - Nicolas Sergeant
- Inserm UMR 837, JPARC, Place de Verdun, Lille 59045, France ; PRES University Lille Nord de France, University of Lille II, Jean-Pierre Aubert Research Center, Institute of Predictive Medicine and Therapeutic Research, Lille IFR114, France
| | - Régis Bordet
- EA1046 - Department de Pharmacology - University of Lille 2, University Hospital Centre Place de Verdun, Lille, France
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Campos-Martorell M, Salvador N, Monge M, Canals F, García-Bonilla L, Hernández-Guillamon M, Ayuso MI, Chacón P, Rosell A, Alcazar A, Montaner J. Brain proteomics identifies potential simvastatin targets in acute phase of stroke in a rat embolic model. J Neurochem 2014; 130:301-12. [PMID: 24661059 DOI: 10.1111/jnc.12719] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 03/12/2014] [Accepted: 03/18/2014] [Indexed: 12/19/2022]
Abstract
Finding an efficient neuroprotectant is of urgent need in the field of stroke research. The goal of this study was to test the effect of acute simvastatin administration after stroke in a rat embolic model and to explore its mechanism of action through brain proteomics. To that end, male Wistar rats were subjected to a Middle Cerebral Arteria Occlusion and simvastatin (20 mg/kg s.c) (n = 11) or vehicle (n = 9) were administered 15 min after. To evaluate the neuroprotective mechanisms of simvastatin, brain homogenates after 48 h were analyzed by two-dimensional fluorescence Difference in Gel Electrophoresis (DIGE) technology. We confirmed that simvastatin reduced the infarct volume and improved neurological impairment at 48 h after the stroke in this model. Considering our proteomics analysis, 66 spots, which revealed significant differences between groups, were analyzed by matrix-assisted laser desorption/ionization-time of flight mass spectrometry allowing the identification of 27 proteins. From these results, we suggest that simvastatin protective effect can be partly explained by the attenuation of the oxidative and stress response at blood-brain barrier level after cerebral ischemia. Interestingly, analyzing one of the proteins (HSP75) in plasma from stroke patients who had received simvastatin during the acute phase, we confirmed the results found in the pre-clinical model. Our aim was to study statins benefits when administered during the acute phase of stroke and to explore its mechanisms of action through brain proteomics assay. Using an embolic model, simvastatin-treated rats showed significant infarct volume reduction and neurological improvement compared to vehicle-treated group. Analyzing their homogenated brains by two-dimensional fluorescence Difference in Gel Electrophoresis (DIGE) technology, we concluded that the protective effect of simvastatin can be attributable to oxidative stress response attenuation and blood-brain barrier protection after cerebral ischemia.
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Affiliation(s)
- Mireia Campos-Martorell
- Neurovascular Research Laboratory, Institut de Recerca Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
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25
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Ferraz Franco C, Santos R, Varela Coelho A. Proteolytic events are relevant cellular responses during nervous system regeneration of the starfish Marthasterias glacialis. J Proteomics 2014; 99:1-25. [DOI: 10.1016/j.jprot.2013.12.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 12/03/2013] [Accepted: 12/09/2013] [Indexed: 01/12/2023]
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26
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Tan F, Thiele CJ, Li Z. Collapsin response mediator proteins: Potential diagnostic and prognostic biomarkers in cancers (Review). Oncol Lett 2014; 7:1333-1340. [PMID: 24765134 PMCID: PMC3997700 DOI: 10.3892/ol.2014.1909] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 02/07/2014] [Indexed: 11/13/2022] Open
Abstract
The collapsin response mediator proteins (CRMPs) were originally identified as mediators of semaphorin 3A signaling and neuronal differentiation. The CRMP family consists of five homologous cytosolic proteins, CRMP1-5. Altered expression levels of CRMPs have been observed in several malignant tumors, including lung, breast, colorectal, prostate, pancreatic and neuroendocrine lung cancer. The aim of the current study was to review the recent progress achieved in understanding the association between the different levels of CRMP expression in tumors and their involvement in pathological functions, such as tumor metastasis, disease progression, subtype differentiation and clinical outcome, to address the potential value of CRMPs as biomarkers for the diagnosis and prognosis of cancer patients.
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Affiliation(s)
- Fei Tan
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Carol J Thiele
- Cell and Molecular Biology Section, Pediatric Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Zhijie Li
- Research Center for Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
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Zhang C, Omran AG, He F, Deng X, Wu L, Peng J, Yin F. Screening and identification of dynamin-1 interacting proteins in rat brain synaptosomes. Brain Res 2013; 1543:17-27. [PMID: 24211660 DOI: 10.1016/j.brainres.2013.10.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 10/23/2013] [Accepted: 10/28/2013] [Indexed: 01/27/2023]
Abstract
Dynamin-1 is a multi-domain GTPase that is crucial for the fission stage of synaptic vesicle recycling and vesicle trafficking. In this study, we constructed prokaryotic expression plasmids for the four functional domains of dynamin-1, which are pGEX-4T-2-PH, pGEX-4T-2-PRD, pGEX-4T-2-GED and pGEX-4T-2-GTPase. Glutathione S-transferase pull-down, co-immunoprecipitation (co-IP), and liquid chromatography/mass spectrometry were used to screen and identify dynamin-1 interacting proteins in rat brain synaptosomes. We identified a set of 63 candidate protein interactions, including 36 proteins interacting with dynamin-1 C-terminal proline-rich domain (PRD), 14 with pleckstrin-homology domain (PH), 7 with GTPase effector domain (GED) and 6 with GTPase domain, consisting of synaptic vesicle-associated proteins, cytoskeletal proteins, metabolic enzymes and other proteins. We selected three previously unreported dynamin-1 interacting proteins to verify their interaction with dynamin-1 under native conditions. Using co-IP, we found that Rab GDP-dissociation inhibitor (Rab GDI) and chloride channel 3 (ClC-3) do interact with dynamin-1, but not with TUC-4b (the TOAD-64/Ulip/CRMP (TUC) family member). Those novel interactions detected in our study offer valuable insight into the protein-protein interacting network that could enhance our understanding of dynamin-1 mediated synaptic vesicle recycling.
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Affiliation(s)
- Ciliu Zhang
- Department of Pediatrics, Xiangya Hospital, Central South University, 87 Xiangya Road, Hunan 410008, PR China.
| | - Ahmed Galal Omran
- Department of Pediatrics, Xiangya Hospital, Central South University, 87 Xiangya Road, Hunan 410008, PR China.
| | - Fang He
- Department of Pediatrics, Xiangya Hospital, Central South University, 87 Xiangya Road, Hunan 410008, PR China.
| | - Xiaolu Deng
- Department of Pediatrics, Xiangya Hospital, Central South University, 87 Xiangya Road, Hunan 410008, PR China.
| | - Lei Wu
- Department of Pediatrics, Xiangya Hospital, Central South University, 87 Xiangya Road, Hunan 410008, PR China.
| | - Jing Peng
- Department of Pediatrics, Xiangya Hospital, Central South University, 87 Xiangya Road, Hunan 410008, PR China.
| | - Fei Yin
- Department of Pediatrics, Xiangya Hospital, Central South University, 87 Xiangya Road, Hunan 410008, PR China.
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Manivannan J, Tay SSW, Ling EA, Dheen ST. Dihydropyrimidinase-like 3 regulates the inflammatory response of activated microglia. Neuroscience 2013; 253:40-54. [PMID: 23988434 DOI: 10.1016/j.neuroscience.2013.08.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 08/14/2013] [Accepted: 08/15/2013] [Indexed: 11/28/2022]
Abstract
Microglia, the resident immune cells of the CNS, are known to respond to injuries, infection and inflammation in the CNS by producing proinflammatory cytokines and phagocytosing cell debris and pathogens. In this study, we investigated the expression pattern and role of dihydropyrimidinase-like 3 (Dpysl3), a member of collapsin response mediator protein family, on the inflammatory reaction of microglia. Microarray analysis comparing the global gene expression profile of ameboid and ramified microglia has shown that Dpysl3 is mainly expressed in ameboid microglia in the 5-day postnatal rat brain. Immunohistochemical analysis revealed that Dpysl3 was intensely expressed in ameboid microglial cells in the rat brain till postnatal 7th day and then gradually diminished in ramified microglia of 2 weeks postnatal rat brain. Further, in vitro analysis confirmed that Dpysl3 expression was induced in activated BV-2 microglia treated with lipopolysaccharide (LPS). It is well documented that microglial activation by LPS increased the expression of inducible nitric oxide synthase (iNOS) and proinflammatory cytokines through the activation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) activity in BV-2 microglia. However, siRNA-mediated knockdown of Dpysl3 prevented the LPS-induced expression of iNOS and cytokines including interleukin-1 beta, and tumor necrosis factor-alpha as well as nuclear translocation of NF-κB in microglia. Remarkably, knockdown of Dpysl3 inhibited the migration of activated microglia coupled with deranged actin filament configuration (as revealed by F-actin cytoskeleton expression) in lamellipodia projecting from the cells. Knockdown of Dpysl3 also inhibited the phagocytic ability of activated microglia. These findings suggest that knockdown of Dpysl3 can inhibit activation, migration and phagocytic capability of microglia and consequently reduce neuroinflammation.
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Affiliation(s)
- J Manivannan
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Blk MD10, 4 Medical Drive, Singapore 117597, Singapore
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Schoch KM, von Reyn CR, Bian J, Telling GC, Meaney DF, Saatman KE. Brain injury-induced proteolysis is reduced in a novel calpastatin-overexpressing transgenic mouse. J Neurochem 2013; 125:909-20. [PMID: 23305291 PMCID: PMC3676438 DOI: 10.1111/jnc.12144] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 11/27/2012] [Accepted: 12/23/2012] [Indexed: 11/29/2022]
Abstract
The calpain family of calcium-dependent proteases has been implicated in a variety of diseases and neurodegenerative pathologies. Prolonged activation of calpains results in proteolysis of numerous cellular substrates including cytoskeletal components and membrane receptors, contributing to cell demise despite coincident expression of calpastatin, the specific inhibitor of calpains. Pharmacological and gene-knockout strategies have targeted calpains to determine their contribution to neurodegenerative pathology; however, limitations associated with treatment paradigms, drug specificity, and genetic disruptions have produced inconsistent results and complicated interpretation. Specific, targeted calpain inhibition achieved by enhancing endogenous calpastatin levels offers unique advantages in studying pathological calpain activation. We have characterized a novel calpastatin-overexpressing transgenic mouse model, demonstrating a substantial increase in calpastatin expression within nervous system and peripheral tissues and associated reduction in protease activity. Experimental activation of calpains via traumatic brain injury resulted in cleavage of α-spectrin, collapsin response mediator protein-2, and voltage-gated sodium channel, critical proteins for the maintenance of neuronal structure and function. Calpastatin overexpression significantly attenuated calpain-mediated proteolysis of these selected substrates acutely following severe controlled cortical impact injury, but with no effect on acute hippocampal neurodegeneration. Augmenting calpastatin levels may be an effective method for calpain inhibition in traumatic brain injury and neurodegenerative disorders.
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Affiliation(s)
- Kathleen M. Schoch
- Spinal Cord and Brain Injury Research Center and Department of
Physiology, University of Kentucky College of Medicine, Lexington, KY 40536
| | | | - Jifeng Bian
- Prion Research Center (PRC), Department of Microbiology, Immunology,
and Pathology, Colorado State University, Fort Collins, CO 80523
| | - Glenn C. Telling
- Prion Research Center (PRC), Department of Microbiology, Immunology,
and Pathology, Colorado State University, Fort Collins, CO 80523
| | - David F. Meaney
- Department of Bioengineering, University of Pennsylvania,
Philadelphia, PA 19104
| | - Kathryn E. Saatman
- Spinal Cord and Brain Injury Research Center and Department of
Physiology, University of Kentucky College of Medicine, Lexington, KY 40536
- Address correspondence to: Kathryn E.
Saatman, Ph.D., Spinal Cord and Brain Injury Research Center (SCoBIRC)
University of Kentucky B473 Biomedical and Biological Sciences Research Building
(BBSRB) 741 South Limestone Street Lexington, KY 40536-0509 (859) 323-5145 (859)
257-5737 (fax)
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Blasco H, Bernard-Marissal N, Vourc'h P, Guettard YO, Sunyach C, Augereau O, Khederchah J, Mouzat K, Antar C, Gordon PH, Veyrat-Durebex C, Besson G, Andersen PM, Salachas F, Meininger V, Camu W, Pettmann B, Andres CR, Corcia P. A rare motor neuron deleterious missense mutation in the DPYSL3 (CRMP4) gene is associated with ALS. Hum Mutat 2013; 34:953-60. [PMID: 23568759 DOI: 10.1002/humu.22329] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 04/01/2013] [Indexed: 12/17/2022]
Abstract
The dihydropyrimidinase-like 3 (DPYSL3) or Collapsin Response Mediator Protein 4a (CRMP4a) expression is modified in neurodegeneration and is involved in several ALS-associated pathways including axonal transport, glutamate excitotoxicity, and oxidative stress. The objective of the study was to analyze CRMP4 as a risk factor for ALS. We analyzed the DPYSL3/CRMP4 gene in French ALS patients (n = 468) and matched-controls (n = 394). We subsequently examined a variant in a Swedish population (184 SALS, 186 controls), and evaluated its functional effects on axonal growth and survival in motor neuron cell culture. The rs147541241:A>G missense mutation occurred in higher frequency among French ALS patients (odds ratio = 2.99) but the association was not confirmed in the Swedish population. In vitro expression of mutated DPYSL3 in motor neurons reduced axonal growth and accelerated cell death compared with wild type protein. Thus, the association between the rs147541241 variant and ALS was limited to the French population, highlighting the geographic particularities of genetic influences (risks, contributors). The identified variant appears to shorten motor neuron survival through a detrimental effect on axonal growth and CRMP4 could act as a key unifier in transduction pathways leading to neurodegeneration through effects on early axon development.
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Affiliation(s)
- Hélène Blasco
- UMR INSERM U930, Université François-Rabelais de Tours, Tours, France.
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31
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Hori M, Nakamachi T, Rakwal R, Shibato J, Ogawa T, Aiuchi T, Tsuruyama T, Tamaki K, Shioda S. Transcriptomics and proteomics analyses of the PACAP38 influenced ischemic brain in permanent middle cerebral artery occlusion model mice. J Neuroinflammation 2012; 9:256. [PMID: 23176072 PMCID: PMC3526409 DOI: 10.1186/1742-2094-9-256] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 10/19/2012] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION The neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP) is considered to be a potential therapeutic agent for prevention of cerebral ischemia. Ischemia is a most common cause of death after heart attack and cancer causing major negative social and economic consequences. This study was designed to investigate the effect of PACAP38 injection intracerebroventrically in a mouse model of permanent middle cerebral artery occlusion (PMCAO) along with corresponding SHAM control that used 0.9% saline injection. METHODS Ischemic and non-ischemic brain tissues were sampled at 6 and 24 hours post-treatment. Following behavioral analyses to confirm whether the ischemia has occurred, we investigated the genome-wide changes in gene and protein expression using DNA microarray chip (4x44K, Agilent) and two-dimensional gel electrophoresis (2-DGE) coupled with matrix assisted laser desorption/ionization-time of flight-mass spectrometry (MALDI-TOF-MS), respectively. Western blotting and immunofluorescent staining were also used to further examine the identified protein factor. RESULTS Our results revealed numerous changes in the transcriptome of ischemic hemisphere (ipsilateral) treated with PACAP38 compared to the saline-injected SHAM control hemisphere (contralateral). Previously known (such as the interleukin family) and novel (Gabra6, Crtam) genes were identified under PACAP influence. In parallel, 2-DGE analysis revealed a highly expressed protein spot in the ischemic hemisphere that was identified as dihydropyrimidinase-related protein 2 (DPYL2). The DPYL2, also known as Crmp2, is a marker for the axonal growth and nerve development. Interestingly, PACAP treatment slightly increased its abundance (by 2-DGE and immunostaining) at 6 h but not at 24 h in the ischemic hemisphere, suggesting PACAP activates neuronal defense mechanism early on. CONCLUSIONS This study provides a detailed inventory of PACAP influenced gene expressions and protein targets in mice ischemic brain, and suggests new targets for thereaupetic interventions.
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Affiliation(s)
- Motohide Hori
- Department of Forensic Medicine and Molecular Pathology, School of Medicine, Kyoto University, Kyoto 606-8315, Japan
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Aberrant expression of collapsin response mediator proteins‐1, ‐2 and ‐5 in the brain of intrauterine growth restricted rats. Int J Dev Neurosci 2012; 31:53-60. [DOI: 10.1016/j.ijdevneu.2012.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 09/15/2012] [Accepted: 10/08/2012] [Indexed: 12/29/2022] Open
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Tsutiya A, Ohtani-Kaneko R. Postnatal alteration of collapsin response mediator protein 4 mRNA expression in the mouse brain. J Anat 2012; 221:341-51. [PMID: 22816653 PMCID: PMC3458253 DOI: 10.1111/j.1469-7580.2012.01544.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2012] [Indexed: 11/30/2022] Open
Abstract
Collapsin response mediator protein 4 (CRMP4) is a molecular marker for immature neurons but only limited information is available on the spatiotemporal gene expression changes of Crmp4 in the developing rodent. In the present study, the variation of CRMP4 mRNA expression in the mouse brain was investigated from postnatal day (PD) 0 (the day of birth) to adulthood by in situ hybridization. The hybridization signals were broadly detected on PD0 and regional changes in expression during development were noted. Expression patterns of CRMP4 mRNA were classified into the following three types: (i) signals that were strongest on PD0 or PD7, weak or undetectable on PD14, and absent in adulthood: this pattern was observed in most brain areas; (ii) signals that were first detected on PD0 or PD7 and persisted into adulthood: this pattern was seen in the dentate gyrus and subventricular zone of the olfactory bulb (OB); and (iii) signals that were strongest on PD0 and decreased gradually with age but were still detectable in adulthood: this pattern was identified for the first time in the mitral cell layer of the OB. Analysis using quantitative real-time RT-PCR confirmed higher expression of CRMP4 mRNA in the OB than in other adult brain regions. The persistence of CRMP4 mRNA in the adult OB, including the mitral cell layer, suggests the possibility of both neurogenetic and non-neurogenetic functional roles of CRMP4 in this region.
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Affiliation(s)
- Atsuhiro Tsutiya
- Graduate School of Life Sciences, Toyo UniversityOura, Gunnma, Japan
| | - Ritsuko Ohtani-Kaneko
- Graduate School of Life Sciences, Toyo UniversityOura, Gunnma, Japan
- Bio-Nano Electronic Research Center, Toyo UniversityKawagoe, Saitama, Japan
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Lameu C, Trujillo CA, Schwindt TT, Negraes PD, Pillat MM, Morais KLP, Lebrun I, Ulrich H. Interactions between the NO-citrulline cycle and brain-derived neurotrophic factor in differentiation of neural stem cells. J Biol Chem 2012; 287:29690-701. [PMID: 22730318 DOI: 10.1074/jbc.m111.338095] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The diffusible messenger NO plays multiple roles in neuroprotection, neurodegeneration, and brain plasticity. Argininosuccinate synthase (AS) is a ubiquitous enzyme in mammals and the key enzyme of the NO-citrulline cycle, because it provides the substrate L-arginine for subsequent NO synthesis by inducible, endothelial, and neuronal NO synthase (NOS). Here, we provide evidence for the participation of AS and of the NO-citrulline cycle in the progress of differentiation of neural stem cells (NSC) into neurons, astrocytes, and oligodendrocytes. AS expression and activity and neuronal NOS expression, as well as l-arginine and NO(x) production, increased along neural differentiation, whereas endothelial NOS expression was augmented in conditions of chronic NOS inhibition during differentiation, indicating that this NOS isoform is amenable to modulation by extracellular cues. AS and NOS inhibition caused a delay in the progress of neural differentiation, as suggested by the decreased percentage of terminally differentiated cells. On the other hand, BDNF reversed the delay of neural differentiation of NSC caused by inhibition of NO(x) production. A likely cause is the lack of NO, which up-regulated p75 neurotrophin receptor expression, a receptor required for BDNF-induced differentiation of NSC. We conclude that the NO-citrulline cycle acts together with BDNF for maintaining the progress of neural differentiation.
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Affiliation(s)
- Claudiana Lameu
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-900 São Paulo, Brazil
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Werner L, Müller-Fielitz H, Ritzal M, Werner T, Rossner M, Schwaninger M. Involvement of doublecortin-expressing cells in the arcuate nucleus in body weight regulation. Endocrinology 2012; 153:2655-64. [PMID: 22492306 DOI: 10.1210/en.2011-1760] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Hypothalamic functions, including feeding behavior, show a high degree of plasticity throughout life. Doublecortin (DCX) is a marker of plasticity and neuronal migration expressed in the hypothalamus. Therefore, we wanted to map the fate of DCX(+) cells in the arcuate nucleus (ARC) of the hypothalamus. For this purpose, we generated a BAC transgenic mouse line that expresses the inducible recombinase CreER(T2) under control of the DCX locus. Crossing this line with the Rosa26 or Ai14 reporter mouse lines, we found reporter(+) cells in the ARC upon tamoxifen treatment. They were born prenatally and expressed both DCX and the plasticity marker TUC-4. Immediately after labeling, reporter(+) cells had an enlarged soma that normalized over time, suggesting morphological remodeling. Reporter(+) cells expressed β-endorphin and BSX, neuronal markers of the feeding circuit. Furthermore, leptin treatment led to phosphorylation of STAT3 in reporter(+) cells in accordance with the concept that they are part of the feeding circuits. Indeed, we found a negative correlation between the number of reporter(+) cells and body weight and epididymal fat pads. Our data suggest that DCX(+) cells in the ARC represent a cellular correlate of plasticity that is involved in controlling energy balance in adult mice.
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Affiliation(s)
- Lars Werner
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, 23538 Lübeck, Germany
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Koh PO. Identification of Proteins Differentially Expressed in Cerebral Cortexes of Ginkgo biloba Extract (EGb761)-Treated Rats in a Middle Cerebral Artery Occlusion Model — A Proteomics Approach. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 39:315-24. [DOI: 10.1142/s0192415x11008841] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
EGb 761 is a standardized extract of Ginkgo biloba that appears to have a neuroprotective effect against neurodegenerative diseases. Adult male rats were treated with EGb 761 (100 mg/kg) or vehicle prior to middle cerebral artery occlusion (MCAO), and brains were collected 24 h after MCAO. Proteins that were differentially expressed after EGb 761 treatment during cerebral ischemia were detected using two-dimensional gel electrophoresis. Protein spots with more than a 2.5-fold change in intensity between vehicle- and EGb 761-treated groups were identified by mass spectrometry. The levels of peroxiredoxin-2 and protein phosphatase 2A subunit B were significantly decreased in the vehicle-treated group in comparison to the EGb 761-treated group. In contrast, levels of the collapsing response mediator protein 2 (CRMP2) were significantly increased in vehicle-treated animals, while EGb 761 prevented the injury-induced increase of CRMP2. These results suggest that EGb 761 protects neuronal cells against ischemic brain injury through the specific up- and down-modulation of various proteins.
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Affiliation(s)
- Phil-Ok Koh
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju 660-701, South Korea
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Abstract
The heart is electrically and mechanically controlled as a syncytium by the autonomic nervous system. The cardiac nervous system comprises the sympathetic, parasympathetic, and sensory nervous systems that together regulate heart function on demand. Sympathetic electric activation was initially considered the main regulator of cardiac function; however, modern molecular biotechnological approaches have provided a new dimension to our understanding of the mechanisms controlling the cardiac nervous system. The heart is extensively innervated, although the innervation density is not uniform within the heart, being high in the subepicardium and the special conduction system. We and others showed previously that the balance between neural chemoattractants and chemorepellents determine cardiac nervous development, with both factors expressed in heart. Nerve growth factor is a potent chemoattractant synthesized by cardiomyocytes, whereas Sema3a is a neural chemorepellent expressed specifically in the subendocardium. Disruption of this well-organized molecular balance and innervation density can induce sudden cardiac death due to lethal arrhythmias. In diseased hearts, various causes and mechanisms underlie cardiac sympathetic abnormalities, although their detailed pathology and significance remain contentious. We reported that cardiac sympathetic rejuvenation occurs in cardiac hypertrophy and, moreover, interleukin-6 cytokines secreted from the failing myocardium induce cholinergic transdifferentiation of the cardiac sympathetic system via a gp130 signaling pathway, affecting cardiac performance and prognosis. In this review, we summarize the molecular mechanisms involved in sympathetic development, maturation, and transdifferentiation, and propose their investigation as new therapeutic targets for heart disease.
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Affiliation(s)
- Kensuke Kimura
- Division of Cardiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
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Stella R, Cifani P, Peggion C, Hansson K, Lazzari C, Bendz M, Levander F, Sorgato MC, Bertoli A, James P. Relative Quantification of Membrane Proteins in Wild-Type and Prion Protein (PrP)-Knockout Cerebellar Granule Neurons. J Proteome Res 2011; 11:523-36. [DOI: 10.1021/pr200759m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Roberto Stella
- Department of Biological Chemistry, University of Padova, Italy
| | - Paolo Cifani
- Department of Immunotechnology and CREATE Health, Lund University, Sweden
| | | | - Karin Hansson
- Department of Immunotechnology and CREATE Health, Lund University, Sweden
| | | | - Maria Bendz
- Centre for Biomembrane Research, Department of Biochemistry and Biophysics, Stockholm University, Sweden
| | - Fredrik Levander
- Department of Immunotechnology and CREATE Health, Lund University, Sweden
| | | | | | - Peter James
- Department of Immunotechnology and CREATE Health, Lund University, Sweden
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Tauber SC, Bunkowski S, Brück W, Nau R. Septic metastatic encephalitis: coexistence of brain damage and repair. Neuropathol Appl Neurobiol 2011; 37:768-76. [DOI: 10.1111/j.1365-2990.2011.01196.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Berg K, Puntervoll P, Klungsøyr J, Goksøyr A. Brain proteome alterations of Atlantic cod (Gadus morhua) exposed to PCB 153. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2011; 105:206-217. [PMID: 21762652 DOI: 10.1016/j.aquatox.2011.06.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Revised: 06/02/2011] [Accepted: 06/07/2011] [Indexed: 05/31/2023]
Abstract
Polychlorinated biphenyls (PCBs) are still widespread environmental pollutants that bioaccumulate and biomagnify in the aquatic food chains despite the ban on their production. They constitute a class of 209 possible congeners with different chlorination pattern of the biphenyl ring structure resulting in many different toxicities and mechanisms of toxicity. The neurotoxicity of PCBs is relatively poorly understood, and biomarkers for their neurotoxic effects are lacking. We have carried out a proteomic analysis of brain tissue from Atlantic cod (Gadus morhua) exposed to 2,2',4,4',5,5'-hexachlorobiphenyl (PCB 153, ortho-substituted and non-coplanar), a previously demonstrated neurotoxic congener and the most prevalent congener in biological samples. The fish received 0, 0.5, 2 and 8 mg/kg PCB 153 by intraperitoneal injection, half of the dose on the first day and the second half after one week, and were exposed for two weeks in total. Using a 2-DE approach we found 56 protein spots to be 20% or more (≤ 0.8-fold or ≥ 1.2-fold) significantly different between at least one of the three PCB 153-exposed groups and the control group, and 27 of these were identified by MALDI-TOF MS and MS/MS. Approximately 80% of the differentially regulated proteins may be associated with a non stressor-specific response and/or have previously been classified as notoriously differentially regulated in 2-DE/MS based proteomics studies, such as alterations/responses in energy metabolism, cytoskeleton, protein synthesis, protein degradation (ubiquitin-proteasome system), cellular growth, cycle and death (14-3-3 protein), and (surprisingly) axon guidance (dihydropyrimidinase-like 2 (=collapsin response mediator protein 2, CRMP-2)). The six remaining affected proteins include the strongest up-regulated protein, pyridoxal kinase (essential for synthesis of neurotransmitters such as dopamine, serotonin and GABA), nicotinamide phosphoribosyl-transferase (involved in protection against axonal degeneration) and protein phosphatase 1 (controls brain recovery by synaptic plasticity). The last three of these six proteins (deltex, Rab14 and sorting nexin 6) may preliminarily identify involvement of the Notch signaling pathway and endosomal function in PCB 153-induced neurotoxicity. Our findings constitute novel clues for further research on PCB 153 mode of action in brain, and a proper selection of proteins may, following validation, be applicable in a panel of biomarkers for aquatic environmental monitoring.
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Affiliation(s)
- Karin Berg
- Department of Molecular Biology, University of Bergen, PB 7803, N-5020 Bergen, Norway.
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Kanzaki H, Ito S, Hanafusa H, Jitsumori Y, Tamaru S, Shimizu K, Ouchida M. Identification of direct targets for the miR-17-92 cluster by proteomic analysis. Proteomics 2011; 11:3531-9. [DOI: 10.1002/pmic.201000501] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Revised: 05/02/2011] [Accepted: 06/08/2011] [Indexed: 01/07/2023]
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Pan SH, Chao YC, Hung PF, Chen HY, Yang SC, Chang YL, Wu CT, Chang CC, Wang WL, Chan WK, Wu YY, Che TF, Wang LK, Lin CY, Lee YC, Kuo ML, Lee CH, Chen JJW, Hong TM, Yang PC. The ability of LCRMP-1 to promote cancer invasion by enhancing filopodia formation is antagonized by CRMP-1. J Clin Invest 2011; 121:3189-205. [PMID: 21747164 DOI: 10.1172/jci42975] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2010] [Accepted: 05/18/2011] [Indexed: 01/27/2023] Open
Abstract
Metastasis is a predominant cause of death in patients with cancer. It is a complex multistep process that needs to be better understood if we are to develop new approaches to managing tumor metastasis. Tumor cell invasion of the local stroma is suppressed by collapsin response mediator protein-1 (CRMP-1). Recently, we identified a long isoform of CRMP-1 (LCRMP-1), expression of which correlates with cancer cell invasiveness and poor clinical outcome in patients with non-small-cell lung cancer (NSCLC). Here, we report that LCRMP-1 overexpression in noninvasive human cell lines enhanced filopodia formation, cancer cell migration, and invasion via stabilization of actin. This effect required a highly conserved N-terminal region of LCRMP-1 as well as the WASP family verprolin-homologous protein-1/actin nucleation pathway (WAVE-1/actin nucleation pathway). Furthermore, LCRMP-1 appeared to act downstream of Cdc42, a Rho family protein known to be involved in actin rearrangement. In addition, LCRMP-1 associated with CRMP-1, which downregulated cancer cell metastasis by interrupting the association of LCRMP-1 and WAVE-1. Finally, we found that high-level expression of LCRMP-1 and low-level expression of CRMP-1 were associated with lymph node metastasis and poor survival in patients with NSCLC. In sum, we show that LCRMP-1 and CRMP-1 have opposing functions in regulating cancer cell invasion and metastasis and propose that this pathway may serve as a potential anticancer target.
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Affiliation(s)
- Szu-Hua Pan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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Immunohistological markers for proliferative events, gliogenesis, and neurogenesis within the adult hippocampus. Cell Tissue Res 2011; 345:1-19. [PMID: 21647561 DOI: 10.1007/s00441-011-1196-4] [Citation(s) in RCA: 237] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Accepted: 05/13/2011] [Indexed: 12/29/2022]
Abstract
Biologists long believed that, once development is completed, no new neurons are produced in the forebrain. However, as is now firmly established, new neurons can be produced at least in two specific forebrain areas: the subventricular zone (SVZ) and the dentate gyrus (DG) of the hippocampal formation. Neurogenesis within the adult DG occurs constitutively throughout postnatal life, and the rate of neurogenesis within the DG can be altered under various physiological and pathophysiological conditions. The process of adult neurogenesis within the DG is a multi-step process (proliferation, differentiation, migration, targeting, and synaptic integration) that ends with the formation of a post-mitotic functionally integrated new neuron. Various markers are expressed during specific stages of adult neurogenesis. The availability of such markers allows the time-course and fate of newly born cells to be followed within the DG in a detailed and precise fashion. Several of the available markers (e.g., PCNA, Ki-67, PH3, MCM2) are markers for proliferative events, whereas others are more specific for early phases of neurogenesis and gliogenesis within the adult DG (e.g., nestin, GFAP, Sox2, Pax6). In addition, markers are available allowing events to be distinguished that are related to later steps of gliogenesis (e.g., vimentin, BLBP, S100beta) or neurogenesis (e.g., NeuroD, PSA-NCAM, DCX).
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Jayasena CS, Trinh LA, Bronner M. Live imaging of endogenous Collapsin response mediator protein-1 expression at subcellular resolution during zebrafish nervous system development. Gene Expr Patterns 2011; 11:395-400. [PMID: 21628002 DOI: 10.1016/j.gep.2011.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 05/16/2011] [Accepted: 05/17/2011] [Indexed: 11/29/2022]
Abstract
Collapsin response mediator proteins (CRMPs) are cytosolic phosphoproteins that are functionally important during vertebrate development. We have generated a zebrafish gene trap line that produces fluorescently tagged Crmp1 protein, which can be dynamically tracked in living fish at subcellular resolution. The results show that Crmp1 is expressed in numerous sites in the developing nervous system. Early expression is apparent in the forebrain, epiphysis, optic tectum and the developing spinal cord. In the larval brain, Crmp1 is expressed in several distinct brain regions, such as the telencephalon, habenula and cerebellum. In addition, it is expressed in the spinal cord in a manner that persists in the larva. The results suggest that this Crmp1 protein trap line offers a powerful tool to track selected neuronal populations at high resolution.
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Proteomic identification of proteins differentially expressed by nicotinamide in focal cerebral ischemic injury. Neuroscience 2011; 174:171-7. [DOI: 10.1016/j.neuroscience.2010.11.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Revised: 11/06/2010] [Accepted: 11/11/2010] [Indexed: 11/18/2022]
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Mrozik KM, Zilm PS, Bagley CJ, Hack S, Hoffmann P, Gronthos S, Bartold PM. Proteomic characterization of mesenchymal stem cell-like populations derived from ovine periodontal ligament, dental pulp, and bone marrow: analysis of differentially expressed proteins. Stem Cells Dev 2011; 19:1485-99. [PMID: 20050811 DOI: 10.1089/scd.2009.0446] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Postnatal mesenchymal stem/stromal-like cells (MSCs) including periodontal ligament stem cells (PDLSCs), dental pulp stem cells (DPSCs), and bone marrow stromal cells (BMSCs) are capable of self-renewal and differentiation into multiple mesenchymal cell lineages. Despite their similar expression of MSC-associated and osteoblastic markers, MSCs retain the capacity to generate structures resembling the microenvironments from which they are derived in vivo and represent a promising therapy for the regeneration of complex tissues in the clinical setting. With this in mind, systematic approaches are required to identify the differential protein expression patterns responsible for lineage commitment and mediating the formation of these complex structures. This is the first study to compare the differential proteomic expression profiles of ex vivo-expanded ovine PDLSCs, DPSCs, and BMSCs derived from an individual donor. The two-dimensional electrophoresis was performed and regulated proteins were identified by liquid chromatography--electrospray-ionization tandem mass spectrometry (MS and MS/MS), database searching, and de novo sequencing. In total, 58 proteins were differentially expressed between at least 2 MSC populations in both sheep, 12 of which were up-regulated in one MSC population relative to the other two. In addition, the regulation of selected proteins was also conserved between equivalent human MSC populations. We anticipate that differential protein expression profiling will provide a basis for elucidating the protein expression patterns and molecular cues that are crucial in specifying the characteristic growth and developmental capacity of dental and non-dental tissue-derived MSC populations. These expression patterns can serve as important tools for the regeneration of particular tissues in future stem cell-based tissue engineering studies using animal models.
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Affiliation(s)
- Krzysztof M Mrozik
- Colgate Australian Clinical Dental Research Centre, Dental School, The University of Adelaide, Adelaide, Australia.
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Abstract
Background Glycogen Synthase Kinase 3 (GSK3) has been implicated in regulating chromosomal alignment and mitotic progression but the physiological substrates mediating these GSK3-dependent effects have not been identified. Collapsin Response Mediator Protein 4 (CRMP4) is a cytosolic phosphoprotein known to regulate cytoskeletal dynamics and is a known physiological substrate of GSK3. In this study, we investigate the role of CRMP4 during mitosis. Methodology and Principal Findings Here we demonstrate that during mitosis CRMP4 phosphorylation is regulated in a GSK3-dependent manner. We show that CRMP4 localizes to spindle microtubules during mitosis and loss of CRMP4 disrupts chromosomal alignment and mitotic progression. The effect of CRMP4 on chromosomal alignment is dependent on phosphorylation by GSK3 identifying CRMP4 as a critical GSK3 substrate during mitotic progression. We also provide mechanistic data demonstrating that CRMP4 regulates spindle microtubules consistent with its known role in the regulation of the microtubule cytoskeleton. Conclusion and Significance Our findings identify CRMP4 as a key physiological substrate of GSK3 in regulating chromosomal alignment and mitotic progression through its effect on spindle microtubules.
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Zou W, Ke J, Zhang A, Zhou M, Liao Y, Zhu J, Zhou H, Tu J, Chen H, Jin M. Proteomics analysis of differential expression of chicken brain tissue proteins in response to the neurovirulent H5N1 avian influenza virus infection. J Proteome Res 2010; 9:3789-98. [PMID: 20438121 DOI: 10.1021/pr100080x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A certain H5N1 avian influenza virus has gained the ability to cause the classic central nervous system dysfunction in poultry and migratory birds. This study presents the proteomics analysis on the change of proteins to H5N1 avian influenza virus with neurovirulence infection in chicken brain tissue. By using 2-DE, coupled with MALDI-TOF MS/MS, we identified a set of differentially expressed cellular proteins, including 18 up-regulated proteins and 13 down-regulated proteins. The most significant changes were found in cytoskeleton proteins, proteins associated with the ubiquitin-proteasome pathway, and neural signal transduction proteins. Some identified proteins such as CRMP and SEP5 were found to participate in the pathogenesis progress of Parkinson's and Huntington's diseases, which also developed encephalitis accompanied with CNS dysfunction. The obtained data can provide insight into the virus-chicken brain tissue interaction and reveal the potential mechanism of the neuropathogenesis when the host was infected by the neurovirulent avian influenza virus.
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Affiliation(s)
- Wei Zou
- State Key Laboratory of Agriculture Microbiology, Huazhong Agriculture University, Wuhan, P. R. China
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Heterogeneous intrastriatal pattern of proteins regulating axon growth in normal adult human brain. Neurobiol Dis 2010; 41:458-68. [PMID: 21029775 DOI: 10.1016/j.nbd.2010.10.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 10/13/2010] [Accepted: 10/19/2010] [Indexed: 01/22/2023] Open
Abstract
There is much controversy regarding the extent of axon regeneration/sprouting ability in adult human brain. However, intrinsic differences in axon/neurite growth capability amongst striatal (caudate, putamen, nucleus accumbens) subdivisions could conceivably underlie, in part, their differential vulnerability in degenerative human brain disorders. To establish whether the distribution of axon growth markers in mature human striatum might be uniform or heterogeneous, we measured the intra-striatal pattern, in autopsied brain of normal subjects (n=40, age 18-99), of proteins involved in regulating axon growth. These proteins included polysialylated neural cell adhesion molecule (PSA-NCAM), microtubule-associated proteins TUC-4 (TOAD/Ulip/CRAMP-4) and doublecortin (DCX), and Bcl-2. The distribution of the marker proteins within the striatum was heterogeneous and inversely related to the pattern of dopamine loss previously characterized in Parkinson's disease (PD), with levels in nucleus accumbens>caudate>putamen, ventral>dorsal, and rostral putamen>caudal. In contrast, distribution of glial markers including glial fibrillary acidic protein (GFAP) and human leukocyte antigens (HLA-DRα and HLA-DR/DQ/DPβ), other Bcl-2 family proteins, and control proteins neuron-specific enolase and α-tubulin in the striatum was either homogeneous or had a pattern unmatched to dopamine loss in PD. The putamen also showed more marked age-dependent decreases in concentrations of PSA-NCAM, TUC-4, and DCX and increases in GFAP levels than caudate. We conclude that the intrastriatal pattern of several key axon growth proteins is heterogeneous in adult human brain. Further investigation will be required to establish whether this pattern, which was inversely correlated with the pattern of dopamine loss in PD, is involved to any extent in the pathophysiology of this degenerative disorder.
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Tissue proteomics of the human mammary gland: towards an abridged definition of the molecular phenotypes underlying epithelial normalcy. Mol Oncol 2010; 4:539-61. [PMID: 21036680 DOI: 10.1016/j.molonc.2010.09.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 09/29/2010] [Accepted: 09/30/2010] [Indexed: 01/23/2023] Open
Abstract
Our limited understanding of the biological impact of the whole spectrum of early breast lesions together with a lack of accurate molecular-based risk criteria for the diagnosis and assignment of prognostic significance to biopsy findings presents an important problem in the clinical management of patients harboring precancerous breast lesions. As a result, there is a need to identify biomarkers that can better determine the outcome of early breast lesions by identifying subpopulations of cells in breast premalignant disease that are at high-risk of progression to invasive disease. A first step towards achieving this goal will be to define the molecular phenotypes of the various cell types and precursors - generated by the stem cell hierarchy - that are present in normal and benign conditions of the breast. To date there have been very few systematic proteomic studies aimed at characterizing the phenotypes of the different cell subpopulations present in normal human mammary tissue, partly due to the formidable heterogeneity of mammary tissue, but also due to limitations of the current proteomic technologies. Work in our laboratories has attempted to address in a systematic fashion some of these limitations and here we present our efforts to search for biomarkers using normal fresh tissue from non-neoplastic breast samples. From the data generated by the 2D gel-based proteomic profiling we were able to compile a protein database of normal human breast epithelial tissue that was used to support the biomarker discovery program. We review and present new data on the putative cell-progenitor marker cytokeratin 15 (CK15), and describe a novel marker, dihydropyriminidase-related protein 3 (DRP3) that in combination with CK15 and other well known proteins were used to define molecular phenotypes of normal human breast epithelial cells and their progenitors in resting acini, lactating alveoli, and large collecting ducts of the nipple. Preliminary results are also presented concerning DRP3 positive usual ductal hyperplasias (UDHs) and on single cell layer columnar cells (CCCs). At least two bona fide biomarkers of undifferentiated ERα/PgR negative luminal cells emerged from these studies, CK15 and c-KIT, which in combination with transformation markers may lead to the establishment of a protein signature able to identify breast precancerous at risk of progressing to invasive disease.
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