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Arriero-Cabañero A, García-Vences E, Sánchez-Torres S, Aristizabal-Hernandez S, García-Rama C, Pérez-Rizo E, Fernández-Mayoralas A, Grijalva I, Buzoianu-Anguiano V, Doncel-Pérez E, Mey J. Transplantation of Predegenerated Peripheral Nerves after Complete Spinal Cord Transection in Rats: Effect of Neural Precursor Cells and Pharmacological Treatment with the Sulfoglycolipid Tol-51. Cells 2024; 13:1324. [PMID: 39195214 DOI: 10.3390/cells13161324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 08/02/2024] [Accepted: 08/06/2024] [Indexed: 08/29/2024] Open
Abstract
Following spinal cord injury (SCI), the regenerative capacity of the central nervous system (CNS) is severely limited by the failure of axonal regeneration. The regeneration of CNS axons has been shown to occur by grafting predegenerated peripheral nerves (PPNs) and to be promoted by the transplantation of neural precursor cells (NPCs). The introduction of a combinatorial treatment of PPNs and NPCs after SCI has to address the additional problem of glial scar formation, which prevents regenerating axons from leaving the implant and making functional connections. Previously, we discovered that the synthetic sulfoglycolipid Tol-51 inhibits astrogliosis. The objective was to evaluate axonal regeneration and locomotor function improvement after SCI in rats treated with a combination of PPN, NPC, and Tol-51. One month after SCI, the scar tissue was removed and replaced with segments of PPN or PPN+Tol-51; PPN+NPC+Tol-51. The transplantation of a PPN segment favors regenerative axonal growth; in combination with Tol-51 and NPC, 30% of the labeled descending corticospinal axons were able to grow through the PPN and penetrate the caudal spinal cord. The animals treated with PPN showed significantly better motor function. Our data demonstrate that PPN implants plus NPC and Tol-51 allow successful axonal regeneration in the CNS.
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Affiliation(s)
| | - Elisa García-Vences
- Facultad de Ciencias de la Salud, Centro de Investigación en Ciencias de la Salud (CICSA), Universidad Anáhuac México Norte, Huixquilucan 52786, Mexico
- Secretaría de la Defensa Nacional, Escuela Militar de Graduados en Sanidad, Ciudad de Méxcio 11200, Mexico
| | - Stephanie Sánchez-Torres
- Instituto Mexicano del Seguro Social, Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades, Centro Médico Nacional Siglo XXI. Av. Cuauhtémoc 330, Col. Doctores, Mexico City 06720, Mexico
| | | | - Concepción García-Rama
- Laboratorio de Regeneración Neural, Hospital Nacional de Parapléjicos, 45071 Toledo, Spain
| | - Enrique Pérez-Rizo
- Unidad de Ingeniería y Evaluación Motora del Hospital Nacional de Parapléjicos, 45071 Toledo, Spain
| | | | - Israel Grijalva
- Instituto Mexicano del Seguro Social, Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades, Centro Médico Nacional Siglo XXI. Av. Cuauhtémoc 330, Col. Doctores, Mexico City 06720, Mexico
| | | | - Ernesto Doncel-Pérez
- Laboratorio de Regeneración Neural, Hospital Nacional de Parapléjicos, 45071 Toledo, Spain
| | - Jörg Mey
- Laboratorio de Regeneración Neural, Hospital Nacional de Parapléjicos, 45071 Toledo, Spain
- EURON Graduate School of Neuroscience, 6229ER Maastricht, The Netherlands
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Lisek M, Tomczak J, Boczek T, Zylinska L. Calcium-Associated Proteins in Neuroregeneration. Biomolecules 2024; 14:183. [PMID: 38397420 PMCID: PMC10887043 DOI: 10.3390/biom14020183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/27/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
The dysregulation of intracellular calcium levels is a critical factor in neurodegeneration, leading to the aberrant activation of calcium-dependent processes and, ultimately, cell death. Ca2+ signals vary in magnitude, duration, and the type of neuron affected. A moderate Ca2+ concentration can initiate certain cellular repair pathways and promote neuroregeneration. While the peripheral nervous system exhibits an intrinsic regenerative capability, the central nervous system has limited self-repair potential. There is evidence that significant variations exist in evoked calcium responses and axonal regeneration among neurons, and individual differences in regenerative capacity are apparent even within the same type of neurons. Furthermore, some studies have shown that neuronal activity could serve as a potent regulator of this process. The spatio-temporal patterns of calcium dynamics are intricately controlled by a variety of proteins, including channels, ion pumps, enzymes, and various calcium-binding proteins, each of which can exert either positive or negative effects on neural repair, depending on the cellular context. In this concise review, we focus on several calcium-associated proteins such as CaM kinase II, GAP-43, oncomodulin, caldendrin, calneuron, and NCS-1 in order to elaborate on their roles in the intrinsic mechanisms governing neuronal regeneration following traumatic damage processes.
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Affiliation(s)
| | | | | | - Ludmila Zylinska
- Department of Molecular Neurochemistry, Medical University of Lodz, 92-215 Lodz, Poland; (M.L.); (J.T.); (T.B.)
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3
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Maekawa S, Yuzu K, Chatani E, Morigaki K. Oligomerization and aggregation of NAP-22 with several metal ions. Neurosci Lett 2024; 821:137623. [PMID: 38184017 DOI: 10.1016/j.neulet.2023.137623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 12/28/2023] [Accepted: 12/30/2023] [Indexed: 01/08/2024]
Abstract
Metal ions participate in various biochemical processes such as electron transport chain, gene transcription, and enzymatic reactions. Furthermore, the aggregation promoting effect of several metal ions on neuronal proteins such as prion, tau, Aβ peptide, and α-synuclein, has been reported. NAP-22 (also called BASP1 or CAP-23) is a neuron-enriched calmodulin-binding protein and one of the major proteins in the detergent-resistant membrane microdomain fraction of the neuronal cell membrane. Previously, we showed oligomer formation of NAP-22 in the presence of several phospholipids and fatty acids. In this study, we found the aggregation of NAP-22 by FeCl2, FeCl3, and AlCl3 using native-PAGE. Oligomer or aggregate formation of NAP-22 by ZnCl2 or CuSO4 was shown with SDS-PAGE after cross-linking with glutaraldehyde. Morphological analysis with electron microscopy revealed the formation of large aggregates composed of small annular oligomers in the presence of FeCl3, AlCl3, or CuSO4. In case of FeCl2 or ZnCl2, instead of large aggregates, scattered annular and globular oligomers were observed. Interestingly, metal ion induced aggregation of NAP-22 was inhibited by several coenzymes such as NADP+, NADPH, or thiamine pyrophosphate. Since NAP-22 is highly expressed in the presynaptic region of the synapse, this result suggests the participation of metal ions not only on the protein and membrane dynamics at the presynaptic region, but also on the metabolic regulation though the interaction with coenzymes.
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Affiliation(s)
- Shohei Maekawa
- Graduate School of Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan.
| | - Keisuke Yuzu
- Graduate School of Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
| | - Eri Chatani
- Graduate School of Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
| | - Kenichi Morigaki
- Graduate School of Agricultural Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan; Biosignal Research Center, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
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4
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Leung TCN, Lu SN, Chu CN, Lee J, Liu X, Ngai SM. Temporal Quantitative Proteomic and Phosphoproteomic Profiling of SH-SY5Y and IMR-32 Neuroblastoma Cells during All- Trans-Retinoic Acid-Induced Neuronal Differentiation. Int J Mol Sci 2024; 25:1047. [PMID: 38256121 PMCID: PMC10816102 DOI: 10.3390/ijms25021047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/05/2024] [Accepted: 01/13/2024] [Indexed: 01/24/2024] Open
Abstract
The human neuroblastoma cell lines SH-SY5Y and IMR-32 can be differentiated into neuron-like phenotypes through treatment with all-trans-retinoic acid (ATRA). After differentiation, these cell lines are extensively utilized as in vitro models to study various aspects of neuronal cell biology. However, temporal and quantitative profiling of the proteome and phosphoproteome of SH-SY5Y and IMR-32 cells throughout ATRA-induced differentiation has been limited. Here, we performed relative quantification of the proteomes and phosphoproteomes of SH-SY5Y and IMR-32 cells at multiple time points during ATRA-induced differentiation. Relative quantification of proteins and phosphopeptides with subsequent gene ontology analysis revealed that several biological processes, including cytoskeleton organization, cell division, chaperone function and protein folding, and one-carbon metabolism, were associated with ATRA-induced differentiation in both cell lines. Furthermore, kinase-substrate enrichment analysis predicted altered activities of several kinases during differentiation. Among these, CDK5 exhibited increased activity, while CDK2 displayed reduced activity. The data presented serve as a valuable resource for investigating temporal protein and phosphoprotein abundance changes in SH-SY5Y and IMR-32 cells during ATRA-induced differentiation.
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Affiliation(s)
- Thomas C. N. Leung
- State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
| | - Scott Ninghai Lu
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China; (S.N.L.); (C.N.C.); (J.L.); (X.L.)
| | - Cheuk Ning Chu
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China; (S.N.L.); (C.N.C.); (J.L.); (X.L.)
| | - Joy Lee
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China; (S.N.L.); (C.N.C.); (J.L.); (X.L.)
| | - Xingyu Liu
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China; (S.N.L.); (C.N.C.); (J.L.); (X.L.)
| | - Sai Ming Ngai
- State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China; (S.N.L.); (C.N.C.); (J.L.); (X.L.)
- AoE Centre for Genomic Studies on Plant-Environment Interaction for Sustainable Agriculture and Food Security, The Chinese University of Hong Kong, Hong Kong, China
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5
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Li T, Jia Y, Fu J, Fu Z, Qiao Z, Liu X, Lv T, Tang R, Yang G. P53-induced GAP-43 Upregulation in Primary Cortical Neurons of Rats. Protein Pept Lett 2024; 31:229-235. [PMID: 38288820 DOI: 10.2174/0109298665263864231221071712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/17/2023] [Accepted: 12/05/2023] [Indexed: 06/14/2024]
Abstract
OBJECTIVES In this study, we employed an in vitro culturing technique to investigate the impact of p53 on the modulation of growth-associated protein-43 (GAP-43) within the primary cortical neurons of rat specimens. METHODS (1) Within the first 24 hours after birth, the bilateral cortex was extracted from newborn Wistar rats and primary cortical neurons were cultured and identified. (2) The changes in the mRNA and protein expressions of GAP-43 induced by p53 in rat primary cortical neurons cultured in vitro were identified utilizing real-time polymerase chain reaction and western blot techniques. RESULTS (1) Lentiviral transfection of p53 within primary cortical neurons of rats elicited elevated levels of both mRNA and protein expressions of GAP-43, consequently culminating in a noteworthy augmentation of p53 expression. (2) The introduction of a p53 inhibitor in rat primary cortical neurons resulted in a reduction in both mRNA and protein expressions of GAP-43. CONCLUSION Within primary rat cortical neurons, p53 has the potential to prompt an augmentation in both the transcriptional and protein expression levels of the GAP-43 protein.
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Affiliation(s)
- Tianxia Li
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
| | - Yuexin Jia
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
| | - Junxian Fu
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
| | - Zhuo Fu
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
| | - Zhidong Qiao
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
| | - Xiaoyang Liu
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
| | - Ting Lv
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
| | - Rong Tang
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
| | - Guanglu Yang
- Department of Pediatrics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010000, China
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Nakamoto Y, Nakamura T, Nakai R, Azuma T, Omori K. Transplantation of autologous bone marrow-derived mononuclear cells into cerebrospinal fluid in a canine model of spinal cord injury. Regen Ther 2023; 24:574-581. [PMID: 38028937 PMCID: PMC10654139 DOI: 10.1016/j.reth.2023.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 10/03/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Spinal cord injury (SCI) is associated with severe dysfunction of nervous tissue, and repair via the transplantation of bone marrow-derived mononuclear cells (BM-MNCs) into cerebrospinal fluid yields promising results. It is essential to understand the underlying mechanisms; therefore, this study aimed to evaluate the regenerative potential of autologous BM-MNC transplantation in a canine model of acute SCI. Methods Six dogs were included in this study, and SCI was induced using an epidural balloon catheter between L2 and L3, particularly in the area of the anterior longitudinal ligament. BM-MNC transplantation was performed, and T2-weighted magnetic resonance imaging (MRI) was conducted at specific time points (i.e., immediately after inducing SCI and at 1, 2, and 4 weeks after inducing SCI); moreover, the expression of growth-associated protein 43 (GAP-43) was evaluated. Results MRI revealed that the signal intensity reduced over time in both BM-MNC-treated and control groups. However, the BM-MNC-treated group exhibited a significantly faster reduction than the control group during the early stages of SCI induction (BM-MNC-treated group: 4.82 ± 0.135 cm [day 0], 1.71 ± 0.134 cm [1 week], 1.37 ± 0.036 cm [2 weeks], 1.21 cm [4 weeks]; control group: 4.96 ± 0.211 cm [day 0], 2.49 ± 0.570 cm [1 week], 1.56 ± 0.045 cm [2 weeks], 1.32 cm [4 weeks]). During the early stages of treatment, GAP-43 was significantly expressed at the proximal end of the injured spinal cord in the BM-MSC-treated group, whereas it was scarcely expressed in the control group. Conclusions In SCI, transplanted BM-MNCs can activate the expression of GAP-43, which is involved in axonal elongation (an important process in spinal cord regeneration). Thus, cell therapy with BM-MNCs can provide favorable outcomes in terms of better regenerative capabilities compared with other therapies.
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Affiliation(s)
- Yuya Nakamoto
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Department of Regeneration Science and Engineering Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Neuro Vets Animal Neurology Clinic, Kyoto, Japan
- Laboratory of Veterinary Surgery, Department of Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
- Veterinary Medical Center, Osaka Prefecture University, Osaka, Japan
| | - Tatsuo Nakamura
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Department of Regeneration Science and Engineering Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Ryusuke Nakai
- Institute for the Future of Human Society, Kyoto University, Kyoto, Japan
| | - Takashi Azuma
- Department of Regeneration Science and Engineering Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Koichi Omori
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Anuj A, Reuven N, Roberts SGE, Elson A. BASP1 down-regulates RANKL-induced osteoclastogenesis. Exp Cell Res 2023; 431:113758. [PMID: 37619639 DOI: 10.1016/j.yexcr.2023.113758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/03/2023] [Accepted: 08/21/2023] [Indexed: 08/26/2023]
Abstract
The cytokine RANKL (Receptor Activator of NFκB Ligand) is the key driver of differentiation of monocytes/macrophages to form multi-nucleated, bone-resorbing osteoclasts, a process that is accompanied by significant changes in gene expression. We show that exposure to RANKL rapidly down-regulates expression of Brain Acid Soluble Protein 1 (BASP1) in cultured primary mouse bone marrow macrophages (BMMs), and that this reduced expression is causally linked to the osteoclastogenic process in vitro. Knocking down BASP1 expression in BMMs or eliminating its expression in these cells or in RAW 264.7 cells enhanced RANKL-induced osteoclastogenesis, promoted cell-cell fusion, and generated cultures containing larger osteoclasts with increased mineral degrading abilities relative to controls. Expression of exogenous BASP1 in BMMs undergoing osteoclastogenic differentiation produced the opposite effects. Upon exposure to RANKL, primary mouse BMMs in which BASP1 had been knocked down exhibited increased expression of the key osteoclastogenic transcription factor Nfatc1and of its downstream target genes Dc-stamp, Ctsk, Itgb3, and Mmp9 relative to controls. The knock-down cells also exhibited increased sensitivity to the pro-osteoclastogenic effects of RANKL. We conclude that BASP1 is a negative regulator of RANKL-induced osteoclastogenesis, which down-regulates the pro-osteoclastogenic gene expression pattern induced by this cytokine. Decreased expression of BASP1 upon exposure of BMMs to RANKL removes a negative regulator of osteoclastogenesis and promotes this process.
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Affiliation(s)
- Anuj Anuj
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Nina Reuven
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Stefan G E Roberts
- School of Cellular & Molecular Medicine, University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Ari Elson
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot, 76100, Israel.
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Rodríguez-Vega A, Dutra-Tavares AC, Souza TP, Semeão KA, Filgueiras CC, Ribeiro-Carvalho A, Manhães AC, Abreu-Villaça Y. Nicotine Exposure in a Phencyclidine-Induced Mice Model of Schizophrenia: Sex-Selective Medial Prefrontal Cortex Protein Markers of the Combined Insults in Adolescent Mice. Int J Mol Sci 2023; 24:14634. [PMID: 37834084 PMCID: PMC10572990 DOI: 10.3390/ijms241914634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023] Open
Abstract
Tobacco misuse as a comorbidity of schizophrenia is frequently established during adolescence. However, comorbidity markers are still missing. Here, the method of label-free proteomics was used to identify deregulated proteins in the medial prefrontal cortex (prelimbic and infralimbic) of male and female mice modelled to schizophrenia with a history of nicotine exposure during adolescence. Phencyclidine (PCP), used to model schizophrenia (SCHZ), was combined with an established model of nicotine minipump infusions (NIC). The combined insults led to worse outcomes than each insult separately when considering the absolute number of deregulated proteins and that of exclusively deregulated ones. Partially shared Reactome pathways between sexes and between PCP, NIC and PCPNIC groups indicate functional overlaps. Distinctively, proteins differentially expressed exclusively in PCPNIC mice reveal unique effects associated with the comorbidity model. Interactome maps of these proteins identified sex-selective subnetworks, within which some proteins stood out: for females, peptidyl-prolyl cis-trans isomerase (Fkbp1a) and heat shock 70 kDa protein 1B (Hspa1b), both components of the oxidative stress subnetwork, and gamma-enolase (Eno2), a component of the energy metabolism subnetwork; and for males, amphiphysin (Amph), a component of the synaptic transmission subnetwork. These are proposed to be further investigated and validated as markers of the combined insult during adolescence.
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Affiliation(s)
- Andrés Rodríguez-Vega
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro 20550-170, RJ, Brazil; (A.R.-V.); (A.C.D.-T.); (T.P.S.); (K.A.S.); (C.C.F.); (A.C.M.)
| | - Ana Carolina Dutra-Tavares
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro 20550-170, RJ, Brazil; (A.R.-V.); (A.C.D.-T.); (T.P.S.); (K.A.S.); (C.C.F.); (A.C.M.)
| | - Thainá P. Souza
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro 20550-170, RJ, Brazil; (A.R.-V.); (A.C.D.-T.); (T.P.S.); (K.A.S.); (C.C.F.); (A.C.M.)
| | - Keila A. Semeão
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro 20550-170, RJ, Brazil; (A.R.-V.); (A.C.D.-T.); (T.P.S.); (K.A.S.); (C.C.F.); (A.C.M.)
| | - Claudio C. Filgueiras
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro 20550-170, RJ, Brazil; (A.R.-V.); (A.C.D.-T.); (T.P.S.); (K.A.S.); (C.C.F.); (A.C.M.)
| | - Anderson Ribeiro-Carvalho
- Departamento de Ciências, Faculdade de Formação de Professores da Universidade do Estado do Rio de Janeiro, São Gonçalo 24435-005, RJ, Brazil;
| | - Alex C. Manhães
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro 20550-170, RJ, Brazil; (A.R.-V.); (A.C.D.-T.); (T.P.S.); (K.A.S.); (C.C.F.); (A.C.M.)
| | - Yael Abreu-Villaça
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro 20550-170, RJ, Brazil; (A.R.-V.); (A.C.D.-T.); (T.P.S.); (K.A.S.); (C.C.F.); (A.C.M.)
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Moorhouse AJ, Loats AE, Medler KF, Roberts SG. The BASP1 transcriptional corepressor modifies chromatin through lipid-dependent and lipid-independent mechanisms. iScience 2022; 25:104796. [PMID: 35982799 PMCID: PMC9379585 DOI: 10.1016/j.isci.2022.104796] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/22/2022] [Accepted: 07/14/2022] [Indexed: 12/01/2022] Open
Abstract
The transcriptional corepressor BASP1 requires N-terminal myristoylation for its activity and functions through interactions with nuclear lipids. Here we determine the role of BASP1 lipidation in histone modification and the modulation of chromatin accessibility. We find that the removal of the active histone modifications H3K9ac and H3K4me3 by BASP1 requires the N-terminal myristoylation of BASP1. In contrast, the placement of the repressive histone modification, H3K27me3, by BASP1 does not require BASP1 lipidation. RNA-seq and ATAC-seq analysis finds that BASP1 regulates the activity of multiple transcription factors and induces extensive changes in chromatin accessibility. We find that ∼50% of BASP1 target genes show lipidation-dependent chromatin compaction and transcriptional repression. Our results suggest that BASP1 elicits both lipid-dependent and lipid-independent functions in histone modification and transcriptional repression. In accordance with this, we find that the tumor suppressor activity of BASP1 is also partially dependent on its myristoylation.
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Affiliation(s)
| | - Amy E. Loats
- School of Cellular and Molecular Medicine, University of Bristol, Bristol BS8 1TD, UK
| | - Kathryn F. Medler
- Department of Biological Sciences, University at Buffalo, Buffalo, NY 14260, USA
| | - Stefan G.E. Roberts
- School of Cellular and Molecular Medicine, University of Bristol, Bristol BS8 1TD, UK
- Department of Biological Sciences, University at Buffalo, Buffalo, NY 14260, USA
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Allegra A, Sant'Antonio E, Musolino C, Ettari R. New insights into neuropeptides regulation of immune system and hemopoiesis: effects on hematologic malignancies. Curr Med Chem 2021; 29:2412-2437. [PMID: 34521320 DOI: 10.2174/0929867328666210914120228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 07/29/2021] [Accepted: 08/04/2021] [Indexed: 11/22/2022]
Abstract
Several neurotransmitters and neuropeptides were reported to join to or to cooperate with different cells of the immune system, bone marrow, and peripheral cells and numerous data support that neuroactive molecules might control immune system activity and hemopoiesis operating on lymphoid organs, and the primary hematopoietic unit, the hematopoietic niche. Furthermore, many compounds seem to be able to take part to the leukemogenesis and lymphomagenesis process, and in the onset of multiple myeloma. In this review, we will assess the possibility that neurotransmitters and neuropeptides may have a role in the onset of haematological neoplasms, may affect the response to treatment or may represent a useful starting point for a new therapeutic approach. More in vivo investigations are needed to evaluate neuropeptide's role in haematological malignancies and the possible utilization as an antitumor therapeutic target. Comprehending the effect of the pharmacological administration of neuropeptide modulators on hematologic malignancies opens up new possibilities in curing clonal hematologic diseases to achieve more satisfactory outcomes.
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Affiliation(s)
- Alessandro Allegra
- Department of Human Pathology in Adulthood and Childhood, University of Messina. Italy
| | | | - Caterina Musolino
- Department of Human Pathology in Adulthood and Childhood, University of Messina. Italy
| | - Roberta Ettari
- Department of Chemical, Biological, Pharmaceutical and Environmental Chemistry, University of Messina. Italy
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Abstract
Cholesterol is present within the cell nucleus, where it associates with chromatin, but to date, a direct role for cholesterol in nuclear processes has not been identified. We demonstrate that the transcriptional repressor brain acid soluble protein 1 (BASP1) directly interacts with cholesterol within the cell nucleus through a consensus cholesterol interaction motif. BASP1 recruits cholesterol to the promoter region of target genes, where it is required to mediate chromatin remodeling and transcriptional repression. Our work demonstrates that cholesterol plays a direct role in transcriptional regulation. Lipids are present within the cell nucleus, where they engage with factors involved in gene regulation. Cholesterol associates with chromatin in vivo and stimulates nucleosome packing in vitro, but its effects on specific transcriptional responses are not clear. Here, we show that the lipidated Wilms tumor 1 (WT1) transcriptional corepressor, brain acid soluble protein 1 (BASP1), interacts with cholesterol in the cell nucleus through a conserved cholesterol interaction motif. We demonstrate that BASP1 directly recruits cholesterol to the promoter region of WT1 target genes. Mutation of BASP1 to ablate its interaction with cholesterol or the treatment of cells with drugs that block cholesterol biosynthesis inhibits the transcriptional repressor function of BASP1. We find that the BASP1–cholesterol interaction is required for BASP1-dependent chromatin remodeling and the direction of transcription programs that control cell differentiation. Our study uncovers a mechanism for gene-specific targeting of cholesterol where it is required to mediate transcriptional repression.
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Virlogeux A, Scaramuzzino C, Lenoir S, Carpentier R, Louessard M, Genoux A, Lino P, Hinckelmann MV, Perrier AL, Humbert S, Saudou F. Increasing brain palmitoylation rescues behavior and neuropathology in Huntington disease mice. SCIENCE ADVANCES 2021; 7:7/14/eabb0799. [PMID: 33789888 PMCID: PMC8011966 DOI: 10.1126/sciadv.abb0799] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 02/11/2021] [Indexed: 05/02/2023]
Abstract
Huntington disease (HD) damages the corticostriatal circuitry in large part by impairing transport of brain-derived neurotrophic factor (BDNF). We hypothesized that improving vesicular transport of BDNF could slow or prevent disease progression. We therefore performed selective proteomic analysis of vesicles transported within corticostriatal projecting neurons followed by in silico screening and identified palmitoylation as a pathway that could restore defective huntingtin-dependent trafficking. Using a synchronized trafficking assay and an HD network-on-a-chip, we found that increasing brain palmitoylation via ML348, which inhibits the palmitate-removing enzyme acyl-protein thioesterase 1 (APT1), restores axonal transport, synapse homeostasis, and survival signaling to wild-type levels without toxicity. In human HD induced pluripotent stem cell-derived cortical neurons, ML348 increased BDNF trafficking. In HD knock-in mice, it efficiently crossed the blood-brain barrier to restore palmitoylation levels and reverse neuropathology, locomotor deficits, and anxio-depressive behaviors. APT1 and its inhibitor ML348 thus hold therapeutic interest for HD.
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Affiliation(s)
- Amandine Virlogeux
- Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neuroscience, GIN, 38000, Grenoble, France
| | - Chiara Scaramuzzino
- Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neuroscience, GIN, 38000, Grenoble, France
| | - Sophie Lenoir
- Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neuroscience, GIN, 38000, Grenoble, France
| | - Rémi Carpentier
- Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neuroscience, GIN, 38000, Grenoble, France
| | | | - Aurélie Genoux
- Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neuroscience, GIN, 38000, Grenoble, France
| | - Patricia Lino
- INSERM U861, UEVE, I-STEM, AFM, 91100, Corbeil-Essonnes, France
| | - Maria-Victoria Hinckelmann
- Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neuroscience, GIN, 38000, Grenoble, France
| | - Anselme L Perrier
- INSERM U861, UEVE, I-STEM, AFM, 91100, Corbeil-Essonnes, France
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA), Direction de la Recherche Fondamentale, Institut François Jacob, Molecular Imaging Center (MIRCen), CNRS UMR 9199, Université Paris-Saclay, 92265, Fontenay-aux-Roses, France
| | - Sandrine Humbert
- Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neuroscience, GIN, 38000, Grenoble, France
| | - Frédéric Saudou
- Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neuroscience, GIN, 38000, Grenoble, France.
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Odagaki SI, Maekawa S, Hayashi F, Suzaki T, Morigaki K. The effects of phospholipids and fatty acids on the oligomer formation of NAP-22. Neurosci Lett 2020; 736:135288. [PMID: 32750402 DOI: 10.1016/j.neulet.2020.135288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/20/2020] [Accepted: 07/30/2020] [Indexed: 10/23/2022]
Abstract
Recovery of various signal transduction molecules in the detergent-resistant membrane microdomain (DRM) fraction suggests the importance of this region in cellular functions. NAP-22 (also called BASP1 or CAP-23) is a neuron-enriched calmodulin-binding protein and one of the major proteins in the DRM fraction of the neuronal cell membrane. Previous studies showed tight binding activity of NAP-22 to acidic membrane lipids and the self-interaction of NAP-22, i.e., oligomerization. In this study, the effect of various phospholipids, lysophospholipids and fatty acids on the oligomerization of NAP-22 was studied through SDS-PAGE after chemical cross-linking and electron microscopic observation. High molecular mass oligomers were detected by SDS-PAGE after incubation in solutions containing over 20 mM NaCl at pH 6.5-8.5, even in the absence of lipid addition, and the addition of Ca2+/calmodulin abolished oligomerization. Higher molecular mass oligomer formation after incubation with acidic phospholipids was detected with gradient SDS-PAGE. Much higher mass oligomers were detected in the presence of polyunsaturated fatty acids. Electron microscopic analysis of the samples after SDS treatment showed tangled rope-like structures. Liposome-bound NAP-22 showed small oval or annular structures after cross-linking and SDS treatment. These oligomers were suggested to make the tangled rope-like structures, for annular structures of the same size were observed in the structure. These results suggest the participation of NAP-22 to liquid-liquid phase separation through oligomerization.
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Affiliation(s)
- Sin-Ichi Odagaki
- Graduate School of Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
| | - Shohei Maekawa
- Graduate School of Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan.
| | - Fumio Hayashi
- Graduate School of Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
| | - Toshinobu Suzaki
- Graduate School of Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
| | - Kenichi Morigaki
- Graduate School of Agricultural Science, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan; Biosignal Research Center, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
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14
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Chung D, Shum A, Caraveo G. GAP-43 and BASP1 in Axon Regeneration: Implications for the Treatment of Neurodegenerative Diseases. Front Cell Dev Biol 2020; 8:567537. [PMID: 33015061 PMCID: PMC7494789 DOI: 10.3389/fcell.2020.567537] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 08/14/2020] [Indexed: 01/06/2023] Open
Abstract
Growth-associated protein-43 (GAP-43) and brain acid-soluble protein 1 (BASP1) regulate actin dynamics and presynaptic vesicle cycling at axon terminals, thereby facilitating axonal growth, regeneration, and plasticity. These functions highly depend on changes in GAP-43 and BASP1 expression levels and post-translational modifications such as phosphorylation. Interestingly, examinations of GAP-43 and BASP1 in neurodegenerative diseases reveal alterations in their expression and phosphorylation profiles. This review provides an overview of the structural properties, regulations, and functions of GAP-43 and BASP1, highlighting their involvement in neural injury response and regeneration. By discussing GAP-43 and BASP1 in the context of neurodegenerative diseases, we also explore the therapeutic potential of modulating their activities to compensate for neuron loss in neurodegenerative diseases.
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Affiliation(s)
- Daayun Chung
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Andrew Shum
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Gabriela Caraveo
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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15
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Villa R, Fergnani VGC, Silipigni R, Guerneri S, Cinnante C, Guala A, Danesino C, Scola E, Conte G, Fumagalli M, Gangi S, Colombo L, Picciolini O, Ajmone PF, Accogli A, Madia F, Tassano E, Scala M, Capra V, Srour M, Spaccini L, Righini A, Greco D, Castiglia L, Romano C, Bedeschi MF. Structural brain anomalies in Cri-du-Chat syndrome: MRI findings in 14 patients and possible genotype-phenotype correlations. Eur J Paediatr Neurol 2020; 28:110-119. [PMID: 32800423 DOI: 10.1016/j.ejpn.2020.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 06/02/2020] [Accepted: 07/03/2020] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Cri-du-Chat Syndrome (CdCS) is a genetic condition due to deletions showing different breakpoints encompassing a critical region on the short arm of chromosome 5, located between p15.2 and p15.3, first defined by Niebuhr in 1978. The classic phenotype includes a characteristic cry, peculiar facies, microcephaly, growth retardation, hypotonia, speech and psychomotor delay and intellectual disability. A wide spectrum of clinical manifestations can be attributed to differences in size and localization of the 5p deletion. Several critical regions related to some of the main features (such as cry, peculiar facies, developmental delay) have been identified. The aim of this study is to further define the genotype-phenotype correlations in CdCS with particular regards to the specific neuroradiological findings. PATIENTS AND METHODS Fourteen patients with 5p deletions have been included in the present study. Neuroimaging studies were conducted using brain Magnetic Resonance Imaging (MRI). Genetic testing was performed by means of comparative genomic hybridization (CGH) array at 130 kb resolution. RESULTS MRI analyses showed that isolated pontine hypoplasia is the most common finding, followed by vermian hypoplasia, ventricular anomalies, abnormal basal angle, widening of cavum sellae, increased signal of white matter, corpus callosum anomalies, and anomalies of cortical development. Chromosomal microarray analysis identified deletions ranging in size from 11,6 to 33,8 Mb on the short arm of chromosome 5. Then, we took into consideration the overlapping and non-overlapping deleted regions. The goal was to establish a correlation between the deleted segments and the neuroradiological features of our patients. CONCLUSIONS Performing MRI on all the patients in our cohort, allowed us to expand the neuroradiological phenotype in CdCS. Moreover, possible critical regions associated to characteristic MRI findings have been identified.
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Affiliation(s)
- R Villa
- Medical Genetics Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
| | - V G C Fergnani
- Medical Genetics Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
| | - R Silipigni
- Medical Genetics Laboratory, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - S Guerneri
- Medical Genetics Laboratory, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - C Cinnante
- Neuroradiology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - A Guala
- Department of Pediatrics, Castelli Hospital, Verbania, Italy.
| | - C Danesino
- Molecular Medicine Department, General Biology and Medical Genetics Unit, University of Pavia, Pavia, Italy.
| | - E Scola
- Neuroradiology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - G Conte
- Neuroradiology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - M Fumagalli
- NICU, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - S Gangi
- NICU, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - L Colombo
- NICU, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - O Picciolini
- Pediatric Physical Medicine & Rehabilitation Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - P F Ajmone
- Child and Adolescent Neuropsychiatric Service (UONPIA), Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy.
| | - A Accogli
- DINOGMI, Università degli Studi di Genova, Italy; IRCCS Istituto Giannina Gaslini, Genoa, Italy.
| | - F Madia
- IRCCS Istituto Giannina Gaslini, Genoa, Italy.
| | - E Tassano
- IRCCS Istituto Giannina Gaslini, Genoa, Italy.
| | - M Scala
- DINOGMI, Università degli Studi di Genova, Italy; IRCCS Istituto Giannina Gaslini, Genoa, Italy.
| | - V Capra
- IRCCS Istituto Giannina Gaslini, Genoa, Italy.
| | - M Srour
- Department of Pediatrics, Division of Pediatric Neurology, McGill University, Montreal, Canada; McGill University Health Center (MUHC) Research Institute, Montreal, Canada.
| | - L Spaccini
- Clinical Genetics Unit, Department of Obstetrics and Gynecology, V. Buzzi Children's Hospital, University of Milan, Italy.
| | - A Righini
- Department of Pediatric Radiology and Neuroradiology, V. Buzzi Children's Hospital, University of Milan, Italy.
| | - D Greco
- Oasi Research Institute, IRCCS, Troina, Italy.
| | - L Castiglia
- Oasi Research Institute, IRCCS, Troina, Italy.
| | - C Romano
- Oasi Research Institute, IRCCS, Troina, Italy.
| | - M F Bedeschi
- Medical Genetics Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
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16
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Lin CC, Huang YK, Cho CF, Lin YS, Lo CC, Kuo TT, Tseng GC, Cheng WC, Chang WC, Hsiao TH, Lai LC, Shih JY, Liu YH, Chao KC, Hsu JL, Lee PC, Sun X, Hung MC, Sher YP. Targeting positive feedback between BASP1 and EGFR as a therapeutic strategy for lung cancer progression. Theranostics 2020; 10:10925-10939. [PMID: 33042262 PMCID: PMC7532684 DOI: 10.7150/thno.49425] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/18/2020] [Indexed: 02/06/2023] Open
Abstract
Rationale: Brain metastasis in patients with lung cancer is life-threatening. However, the molecular mechanism for this catastrophic disease remains elusive, and few druggable targets are available. Therefore, this study aimed to identify and characterize proteins that could be used as therapeutic targets. Methods: Proteomic analyses were conducted to identify differentially expressed membrane proteins between brain metastatic lung cancer cells and primary lung cancer cells. A neuronal growth-associated protein, brain acid soluble protein 1 (BASP1), was chosen for further investigation. The clinical relevance of BASP1 in lung adenocarcinoma was first assessed. Tyrosine kinase activity assays and in vitro and in vivo functional assays were conducted to explore the oncogenic mechanisms of BASP1. Results: The protein levels of BASP1 were positively associated with tumor progression and poor prognosis in patients with lung adenocarcinoma. Membrane-bound BASP1 increased EGFR signaling and stabilized EGFR proteins by facilitating their escape from the ubiquitin-proteasome pathway. Reciprocally, activation of EGFR recruited more BASP1 to the plasma membrane, generating a positive feedback loop between BASP1 and EGFR. Moreover, the synergistic therapeutic effects of EGFR tyrosine kinase inhibitor and arsenic trioxide led to a reduction in the level of BASP1 protein observed in lung cancer cells with acquired resistance to EGFR inhibitors. Conclusions: The reciprocal interaction between BASP1 and EGFR facilitates EGFR signaling in brain metastatic lung cancer. Targeting the newly identified BASP1-EGFR interaction could open new venues for lung cancer treatment.
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17
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Buzoianu-Anguiano V, Rivera-Osorio J, Orozco-Suárez S, Vega-García A, García-Vences E, Sánchez-Torres S, Jiménez-Estrada I, Guizar-Sahagún G, Mondragon-Caso J, Fernández-Valverde F, Madrazo I, Grijalva I. Single vs. Combined Therapeutic Approaches in Rats With Chronic Spinal Cord Injury. Front Neurol 2020; 11:136. [PMID: 32210903 PMCID: PMC7076126 DOI: 10.3389/fneur.2020.00136] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 02/06/2020] [Indexed: 12/30/2022] Open
Abstract
The regenerative capability of the central nervous system is limited after traumatic spinal cord injury (SCI) due to intrinsic and extrinsic factors that inhibit spinal cord regeneration, resulting in deficient functional recovery. It has been shown that strategies, such as pre-degenerated peripheral nerve (PPN) grafts or the use of bone marrow stromal cells (BMSCs) or exogenous molecules, such as chondroitinase ABC (ChABC) promote axonal growth and remyelination, resulting in an improvement in locomotor function. These treatments have been primarily assessed in acute injury models. The aim of the present study is to evaluate the ability of several single and combined treatments in order to modify the course of chronic complete SCI in rats. A complete cord transection was performed at the T9 level. One month later, animals were divided into five groups: original injury only (control group), and original injury plus spinal cord re-transection to create a gap to accommodate BMSCs, PPN, PPN + BMSCs, and PPN + BMSCs + ChABC. In comparison with control and single-treatment groups (PPN and BMSCs), combined treatment groups (PPN + BMSCs and PPN + BMSCs + ChABC) showed significative axonal regrowth, as revealed by an increase in GAP-43 and MAP-1B expression in axonal fibers, which correlated with an improvement in locomotor function. In conclusion, the combined therapies tested here improve locomotor function by enhancing axonal regeneration in rats with chronic SCI. Further studies are warranted to refine this promising line of research for clinical purposes.
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Affiliation(s)
- Vinnitsa Buzoianu-Anguiano
- Hospital de Especialidades CMN Siglo XXI IMSS, Unidad de Investigación Médica en Enfermedades Neurologicas, Mexico City, Mexico
| | - Jared Rivera-Osorio
- Hospital de Especialidades CMN Siglo XXI IMSS, Unidad de Investigación Médica en Enfermedades Neurologicas, Mexico City, Mexico
| | - Sandra Orozco-Suárez
- Hospital de Especialidades CMN Siglo XXI IMSS, Unidad de Investigación Médica en Enfermedades Neurologicas, Mexico City, Mexico
| | - Angélica Vega-García
- Hospital de Especialidades CMN Siglo XXI IMSS, Unidad de Investigación Médica en Enfermedades Neurologicas, Mexico City, Mexico
| | - Elisa García-Vences
- Centro de Investigación en Ciencias de la Salud, Universidad Anahuac México Campus Norte, Mexico City, Mexico
| | - Stephanie Sánchez-Torres
- Hospital de Especialidades CMN Siglo XXI IMSS, Unidad de Investigación Médica en Enfermedades Neurologicas, Mexico City, Mexico
| | - Ismael Jiménez-Estrada
- Departamento de Fisiología, Biofísica y Neurociencias, CINVESTAV, IPN, Mexico City, Mexico
| | - Gabriel Guizar-Sahagún
- Hospital de Especialidades CMN Siglo XXI IMSS, Unidad de Investigación Médica en Enfermedades Neurologicas, Mexico City, Mexico.,Departamento de Cirugía Experimental, Proyecto Camina AC, Mexico City, Mexico
| | - Jose Mondragon-Caso
- Centro de Investigación en Ciencias de la Salud, Universidad Anahuac México Campus Norte, Mexico City, Mexico
| | | | - Ignacio Madrazo
- Hospital de Especialidades CMN Siglo XXI IMSS, Unidad de Investigación Médica en Enfermedades Neurologicas, Mexico City, Mexico
| | - Israel Grijalva
- Hospital de Especialidades CMN Siglo XXI IMSS, Unidad de Investigación Médica en Enfermedades Neurologicas, Mexico City, Mexico
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PTPRA Phosphatase Regulates GDNF-Dependent RET Signaling and Inhibits the RET Mutant MEN2A Oncogenic Potential. iScience 2020; 23:100871. [PMID: 32062451 PMCID: PMC7021549 DOI: 10.1016/j.isci.2020.100871] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 01/15/2020] [Accepted: 01/26/2020] [Indexed: 12/17/2022] Open
Abstract
The RET proto-oncogene encodes receptor tyrosine kinase, expressed primarily in tissues of neural crest origin. De-regulation of RET signaling is implicated in several human cancers. Recent phosphatome interactome analysis identified PTPRA interacting with the neurotrophic factor (GDNF)-dependent RET-Ras-MAPK signaling-axis. Here, by identifying comprehensive interactomes of PTPRA and RET, we reveal their close physical and functional association. The PTPRA directly interacts with RET, and using the phosphoproteomic approach, we identify RET as a direct dephosphorylation substrate of PTPRA both in vivo and in vitro. The protein phosphatase domain-1 is indispensable for the PTPRA inhibitory role on RET activity and downstream Ras-MAPK signaling, whereas domain-2 has only minor effect. Furthermore, PTPRA also regulates the RET oncogenic mutant variant MEN2A activity and invasion capacity, whereas the MEN2B is insensitive to PTPRA. In sum, we discern PTPRA as a novel regulator of RET signaling in both health and cancer. PTPRA inhibits ligand (GDNF-GFRα1)-mediated RET activity on Ras-MAPK signaling axis PTPRA dephosphorylate RET on key functional phosphotyrosine sites PTPRA catalytic (PTPase) domain 1 regulates RET-driven signaling PTPRA suppresses RET oncogenic mutant MEN2A in both Ras-MAPK and cell invasion models
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Hartl M, Puglisi K, Nist A, Raffeiner P, Bister K. The brain acid-soluble protein 1 (BASP1) interferes with the oncogenic capacity of MYC and its binding to calmodulin. Mol Oncol 2020; 14:625-644. [PMID: 31944520 PMCID: PMC7053243 DOI: 10.1002/1878-0261.12636] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 12/16/2019] [Accepted: 01/09/2020] [Indexed: 12/13/2022] Open
Abstract
The MYC protein is a transcription factor with oncogenic potential controlling fundamental cellular processes such as cell proliferation, metabolism, differentiation, and apoptosis. The MYC gene is a major cancer driver, and elevated MYC protein levels are a hallmark of most human cancers. We have previously shown that the brain acid-soluble protein 1 gene (BASP1) is specifically downregulated by the v-myc oncogene and that ectopic BASP1 expression inhibits v-myc-induced cell transformation. The 11-amino acid effector domain of the BASP1 protein interacts with the calcium sensor calmodulin (CaM) and is mainly responsible for this inhibitory function. We also reported recently that CaM interacts with all MYC variant proteins and that ectopic CaM increases the transactivation and transformation potential of the v-Myc protein. Here, we show that the presence of excess BASP1 or of a synthetic BASP1 effector domain peptide leads to displacement of v-Myc from CaM. The protein stability of v-Myc is decreased in cells co-expressing v-Myc and BASP1, which may account for the inhibition of v-Myc. Furthermore, suppression of v-Myc-triggered transcriptional activation and cell transformation is compensated by ectopic CaM, suggesting that BASP1-mediated withdrawal of CaM from v-Myc is a crucial event in the inhibition. In view of the tumor-suppressive role of BASP1 which was recently also reported for human cancer, small compounds or peptides based on the BASP1 effector domain could be used in drug development strategies aimed at tumors with high MYC expression.
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Affiliation(s)
- Markus Hartl
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
| | - Kane Puglisi
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
| | - Andrea Nist
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
| | - Philipp Raffeiner
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
| | - Klaus Bister
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
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20
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Shikonin attenuates sympathetic remodeling in chronic heart failure mice via regulating miR-124. Biochem Biophys Res Commun 2019; 520:359-365. [DOI: 10.1016/j.bbrc.2019.10.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 10/03/2019] [Indexed: 12/20/2022]
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21
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Hartl M, Schneider R. A Unique Family of Neuronal Signaling Proteins Implicated in Oncogenesis and Tumor Suppression. Front Oncol 2019; 9:289. [PMID: 31058089 PMCID: PMC6478813 DOI: 10.3389/fonc.2019.00289] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 03/29/2019] [Indexed: 12/20/2022] Open
Abstract
The neuronal proteins GAP43 (neuromodulin), MARCKS, and BASP1 are highly expressed in the growth cones of nerve cells where they are involved in signal transmission and cytoskeleton organization. Although their primary structures are unrelated, these signaling proteins share several structural properties like fatty acid modification, and the presence of cationic effector domains. GAP43, MARCKS, and BASP1 bind to cell membrane phospholipids, a process reversibly regulated by protein kinase C-phosphorylation or by binding to the calcium sensor calmodulin (CaM). GAP43, MARCKS, and BASP1 are also expressed in non-neuronal cells, where they may have important functions to manage cytoskeleton architecture, and in case of MARCKS and BASP1 to act as cofactors in transcriptional regulation. During neoplastic cell transformation, the proteins reveal differential expression in normal vs. tumor cells, and display intrinsic tumor promoting or tumor suppressive activities. Whereas GAP43 and MARCKS are oncogenic, tumor suppressive functions have been ascribed to BASP1 and in part to MARCKS depending on the cell type. Like MARCKS, the myristoylated BASP1 protein is localized both in the cytoplasm and in the cell nucleus. Nuclear BASP1 participates in gene regulation converting the Wilms tumor transcription factor WT1 from an oncoprotein into a tumor suppressor. The BASP1 gene is downregulated in many human tumor cell lines particularly in those derived from leukemias, which display elevated levels of WT1 and of the major cancer driver MYC. BASP1 specifically inhibits MYC-induced cell transformation in cultured cells. The tumor suppressive functions of BASP1 and MARCKS could be exploited to expand the spectrum of future innovative therapeutic approaches to inhibit growth and viability of susceptible human tumors.
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Affiliation(s)
- Markus Hartl
- Center of Molecular Biosciences (CMBI), Institute of Biochemistry, University of Innsbruck, Innsbruck, Austria
| | - Rainer Schneider
- Center of Molecular Biosciences (CMBI), Institute of Biochemistry, University of Innsbruck, Innsbruck, Austria
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Suarez-Trujillo A, Chen Y, Aduwari C, Cummings S, Kuang S, Buhman KK, Hedrick V, Sobreira TJP, Aryal UK, Plaut K, Casey T. Maternal high-fat diet exposure during gestation, lactation, or gestation and lactation differentially affects intestinal morphology and proteome of neonatal mice. Nutr Res 2019; 66:48-60. [PMID: 31051321 DOI: 10.1016/j.nutres.2019.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 03/15/2019] [Accepted: 03/22/2019] [Indexed: 12/15/2022]
Abstract
Offspring nutrition depends on the mother during gestation and lactation; thus, maternal nutrition and metabolism can affect their development. We hypothesized that maternal exposure to high-fat (HF) diet affects neonate's gastrointestinal tract development. Our objective was to determine the effect of maternal HF diet during gestation and lactation on neonate's duodenum histomorphology and proteome. Female mice were fed either a control (C, 10% kcal fat) or an HF (60% kcal fat) diet for 4 weeks and bred. On postnatal day 2, half the pups were cross-fostered to dams fed on different diet, creating 4 treatments: C-C, C-HF, HF-C, and HF-HF, indicating maternal diet during gestation-lactation, respectively. On postnatal day 12, pups' duodenum was excised and prepared for histology and liquid chromatography-tandem mass spectrometry analysis of proteome. Villi were significantly longer in HF-HF pups, and crypt cell proliferation rate was not different among treatments. Between C-C and HF-HF, HF-C, or C-HF, 812, 601, or 894 proteins were differentially expressed (Tukey adjusted P < .05), respectively. Functional analysis clustered proteins upregulated in HF-HF vs C-C in fat digestion and absorption, extracellular matrix, cell adhesion, immune response, oxidation-reduction processes, phagocytosis, and transport categories. Proteins downregulated were classified as RNA splicing, translation, protein folding, endocytosis, and transport. There was evidence for a carryover effect of exposure to HF diet during gestation to the postnatal period. Alterations in proteome relative to HF exposure potentially reflect long-term changes in the functioning of the duodenum.
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Affiliation(s)
| | - Yulu Chen
- Department of Animal Sciences, Purdue University; Department for Animal Sciences, Iowa State University.
| | | | | | | | | | - Victoria Hedrick
- Purdue Proteomics Facility, Bindley Bioscience Center, Purdue University.
| | | | - Uma K Aryal
- Purdue Proteomics Facility, Bindley Bioscience Center, Purdue University.
| | - Karen Plaut
- Department of Animal Sciences, Purdue University.
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The Prion Protein Regulates Synaptic Transmission by Controlling the Expression of Proteins Key to Synaptic Vesicle Recycling and Exocytosis. Mol Neurobiol 2018; 56:3420-3436. [PMID: 30128651 DOI: 10.1007/s12035-018-1293-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 08/01/2018] [Indexed: 12/16/2022]
Abstract
The cellular prion protein (PrPC), whose misfolded conformers are implicated in prion diseases, localizes to both the presynaptic membrane and postsynaptic density. To explore possible molecular contributions of PrPC to synaptic transmission, we utilized a mass spectrometry approach to quantify the release of glutamate from primary cerebellar granule neurons (CGN) expressing, or deprived of (PrP-KO), PrPC, following a depolarizing stimulus. Under the same conditions, we also tracked recycling of synaptic vesicles (SVs) in the two neuronal populations. We found that in PrP-KO CGN these processes decreased by 40 and 60%, respectively, compared to PrPC-expressing neurons. Unbiased quantitative mass spectrometry was then employed to compare the whole proteome of CGN with the two PrP genotypes. This approach allowed us to assess that, relative to the PrPC-expressing counterpart, the absence of PrPC modified the protein expression profile, including diminution of some components of SV recycling and fusion machinery. Subsequent quantitative RT-PCR closely reproduced proteomic data, indicating that PrPC is committed to ensuring optimal synaptic transmission by regulating genes involved in SV dynamics and neurotransmitter release. These novel molecular and cellular aspects of PrPC add insight into the underlying mechanisms for synaptic dysfunctions occurring in neurodegenerative disorders in which a compromised PrPC is likely to intervene.
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Maruyama Y, Ueno S, Morita M, Hayashi F, Maekawa S. Inhibitory effect of several sphingolipid metabolites on calcineurin. Neurosci Lett 2018. [PMID: 29524645 DOI: 10.1016/j.neulet.2018.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Neurons have well-developed membrane microdomains called "rafts" that are recovered as a detergent-resistant membrane microdomain fraction (DRM). NAP-22 is one of the major protein components of neuronal DRM. In a previous study, we showed that DRM-derived NAP-22 binds ganglioside and the inhibitory effect of ganglioside to calcineurin (CaN), a neuron-enriched calmodulin-regulated phosphoprotein phosphatase. Considering the important roles of CaN in neurons, identification of other cellular regulators of CaN could be a good clue to understand the molecular background of neuronal function. In this study, we screened the effect of several membrane lipid-derived molecules on the CaN activity and found sphingosine and some sphingosine-derived metabolites such as sphingosylphosphorylcholine, galactosylsphingosine (psychosine), and glucosylsphingosine, have inhibitory effect on CaN through the interaction with calmodulin.
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Affiliation(s)
- Yoko Maruyama
- Department of Biology, Graduate School of Science, Kobe-University, Kobe 657-8501, Japan
| | - Satoko Ueno
- Department of Biology, Graduate School of Science, Kobe-University, Kobe 657-8501, Japan
| | - Mitsuhiro Morita
- Department of Biology, Graduate School of Science, Kobe-University, Kobe 657-8501, Japan
| | - Fumio Hayashi
- Department of Biology, Graduate School of Science, Kobe-University, Kobe 657-8501, Japan
| | - Shohei Maekawa
- Department of Biology, Graduate School of Science, Kobe-University, Kobe 657-8501, Japan.
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Xu JY, Dai C, Shan JJ, Xie T, Xie HH, Wang MM, Yang G. Determination of the effect of Pinellia ternata (Thunb.) Breit. on nervous system development by proteomics. JOURNAL OF ETHNOPHARMACOLOGY 2018; 213:221-229. [PMID: 29141195 DOI: 10.1016/j.jep.2017.11.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 10/20/2017] [Accepted: 11/11/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Banxia (BX) is the dried tuber of Pinellia ternata (Thunb.) Breit., a commonly prescribed Chinese medicinal herb for the treatment of cough, phlegm, and vomiting in pregnant women. However, raw BX has been demonstrated to exert toxic effects on reproduction and the precise and comprehensive mechanisms remain elusive. AIM OF THE STUDY We applied an iTRAQ (isobaric tags for relative and absolute quantitation, iTRAQ)-based proteomic method to explore the mechanisms of raw BX-induced fetal toxicity in mice. MATERIALS AND METHODS The mice were separated into two groups, control mice and BX-treated mice. From gestation days 6-8, the control group was treated with normal saline and the BX group was exposed to BX suspension (2.275g/kg/day). Gastrulae were obtained and analyzed using the quantitative proteomic approach of iTRAQ coupled to liquid chromatography-tandem mass spectrometry (LC-MS/MS). A multi-omics data analysis tool, OmicsBean (http://www.omicsbean.cn), was employed to conduct bioinformatic analysis of differentially abundant proteins (DAPs). Quantitative real-time PCR (qRT-PCR) and western blotting methods were applied to detect the protein expression levels and validate the quality of the proteomics. RESULTS A total of 1245 proteins were identified with < 1% false discovery rate (FDR) and 583 protein abundance changes were confidently assessed. Moreover, 153 proteins identified in BX-treated samples showed significant differences in abundance. Bioinformatics analysis showed that the functions of 37 DAPs were predominantly related to nervous system development. The expression levels of the selected proteins for quantification by qRT-PCR or western blotting were consistent with the results in iTRAQ-labeled proteomics data. CONCLUSION The results suggested that oral administration of BX in mice may cause fetal abnormality of the nervous system. The findings may be helpful to elucidate the underlying mechanisms of BX-induced embryotoxicity.
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Affiliation(s)
- Jian-Ya Xu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China; Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Chen Dai
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jin-Jun Shan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing 210023, China.
| | - Tong Xie
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Hui-Hui Xie
- Department of Pediatrics, Zhejiang Provincial Hospital of Traditional Chinese Medicine, Hangzhou 310006, China
| | - Ming-Ming Wang
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Guang Yang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China.
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Houyoux N, Wattiez R, Ris L. A proteomic analysis of contextual fear conditioned rats reveals dynamic modifications in neuron and oligodendrocyte protein expression in the dentate gyrus. Eur J Neurosci 2017; 46:2177-2189. [PMID: 28833751 DOI: 10.1111/ejn.13664] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 08/08/2017] [Accepted: 08/09/2017] [Indexed: 11/30/2022]
Abstract
Contextual memory is an intricate process involving synaptic plasticity and network rearrangement. Both are governed by many molecular processes including phosphorylation and modulation of protein expression. However, little is known about the molecules involved in it. Here, we exploited the advantages of a quantitative proteomic approach to identify a great number of molecules in the rat dentate gyrus after a contextual fear conditioning session. Our results allowed us to highlight protein expression patterns, not only related to neuroplasticity, but also to myelin structure, such as myelin basic protein and myelin proteolipid protein showing a decrease in expression. Validation of the modification in protein expression reveals a dynamic profile during the 48 h following the fear conditioning session. The expression of proteins involved in neurite outgrowth, such as BASP-1 and calcineurin B1, and in synaptic structure and function, VAMP2 and RAB3C, was increased in the dentate gyrus of rats submitted to fear conditioning compared to controls. We showed that the increase in BASP-1 protein was specific to fear conditioning learning as it was not present in immediate-shock rats, neither in rats exposed to a novel environment without being shocked. As myelin is known to stabilise synaptic network, the decrease in myelin proteins suggests a neuroglia interactive process taking place in the dentate gyrus in the 24 h following contextual fear learning, which has never been demonstrated before. These results therefore open the way to the study of new plasticity mechanisms underlying learning and memory.
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Affiliation(s)
- Nicolas Houyoux
- Proteomics and Microbiology Department, Research Institute for Biosciences, University of Mons, Mons, Belgium
| | - Ruddy Wattiez
- Proteomics and Microbiology Department, Research Institute for Biosciences, University of Mons, Mons, Belgium
| | - Laurence Ris
- Department of Neuroscience, Research Institute for Biosciences, University of Mons, 20 Place du Parc, 7000, Mons, Belgium
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Zakharova FM, Zakharov VV. Identification of brain proteins BASP1 and GAP-43 in mouse oocytes and zygotes. Russ J Dev Biol 2017. [DOI: 10.1134/s1062360417030110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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BASP1 interacts with oestrogen receptor α and modifies the tamoxifen response. Cell Death Dis 2017; 8:e2771. [PMID: 28492543 PMCID: PMC5520704 DOI: 10.1038/cddis.2017.179] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/14/2017] [Accepted: 03/15/2017] [Indexed: 01/01/2023]
Abstract
Tamoxifen binds to oestrogen receptor α (ERα) to elicit distinct responses that vary by cell/tissue type and status, but the factors that determine these differential effects are unknown. Here we report that the transcriptional corepressor BASP1 interacts with ERα and in breast cancer cells, this interaction is enhanced by tamoxifen. We find that BASP1 acts as a major selectivity factor in the transcriptional response of breast cancer cells to tamoxifen. In all, 40% of the genes that are regulated by tamoxifen in breast cancer cells are BASP1 dependent, including several genes that are associated with tamoxifen resistance. BASP1 elicits tumour-suppressor activity in breast cancer cells and enhances the antitumourigenic effects of tamoxifen treatment. Moreover, BASP1 is expressed in breast cancer tissue and is associated with increased patient survival. Our data have identified BASP1 as an ERα cofactor that has a central role in the transcriptional and antitumourigenic effects of tamoxifen.
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Bernal Sierra YA, Haseleu J, Kozlenkov A, Bégay V, Lewin GR. Genetic Tracing of Ca v3.2 T-Type Calcium Channel Expression in the Peripheral Nervous System. Front Mol Neurosci 2017; 10:70. [PMID: 28360836 PMCID: PMC5350092 DOI: 10.3389/fnmol.2017.00070] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/01/2017] [Indexed: 02/01/2023] Open
Abstract
Characterizing the distinct functions of the T-type ion channel subunits Cav3.1, 3.2 or 3.3 has proven difficult due to their highly conserved amino-acid sequences and the lack of pharmacological blockers specific for each subunit. To precisely determine the expression pattern of the Cav3.2 channel in the nervous system we generated two knock-in mouse strains that express EGFP or Cre recombinase under the control of the Cav3.2 gene promoter. We show that in the brains of these animals, the Cav3.2 channel is predominantly expressed in the dentate gyrus of the hippocampus. In the peripheral nervous system, the activation of the promoter starts at E9.5 in neural crest cells that will give rise to dorsal root ganglia (DRG) neurons, but not sympathetic neurons. As development progresses the number of DRG cells expressing the Cav3.2 channel reaches around 7% of the DRG at E16.5, and remains constant until E18.5. Characterization of sensory neuron subpopulations at E18.5 showed that EGFP+ cells are a heterogeneous population consisting mainly of TrkB+ and TrkC+ cells, while only a small percentage of DRG cells were TrkA+. Genetic tracing of the sensory nerve end-organ innervation of the skin showed that the activity of the Cav3.2 channel promoter in sensory progenitors marks many mechanoreceptor and nociceptor endings, but spares slowly adapting mechanoreceptors with endings associated with Merkel cells. Our genetic analysis reveals for the first time that progenitors that express the Cav3.2 T-type calcium channel, defines a sensory specific lineage that populates a large proportion of the DRG. Using our Cav3.2-Cre mice together with AAV viruses containing a conditional fluorescent reporter (tdTomato) we could also show that Cre expression is largely restricted to two functionally distinct sensory neuron types in the adult ganglia. Cav3.2 positive neurons innervating the skin were found to only form lanceolate endings on hair follicles and are probably identical to D-hair receptors. A second population of nociceptive sensory neurons expressing the Cav3.2 gene was found to be positive for the calcitonin-gene related peptide but these neurons are deep tissue nociceptors that do not innervate the skin.
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Affiliation(s)
- Yinth A Bernal Sierra
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité - Universitätsmedizin Berlin Berlin, Germany
| | - Julia Haseleu
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité - Universitätsmedizin Berlin Berlin, Germany
| | - Alexey Kozlenkov
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité - Universitätsmedizin Berlin Berlin, Germany
| | - Valérie Bégay
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité - Universitätsmedizin Berlin Berlin, Germany
| | - Gary R Lewin
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité - Universitätsmedizin Berlin Berlin, Germany
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30
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Zettergren A, Karlsson S, Studer E, Sarvimäki A, Kettunen P, Thorsell A, Sihlbom C, Westberg L. Proteomic analyses of limbic regions in neonatal male, female and androgen receptor knockout mice. BMC Neurosci 2017; 18:9. [PMID: 28056817 PMCID: PMC5217640 DOI: 10.1186/s12868-016-0332-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 12/28/2016] [Indexed: 11/10/2022] Open
Abstract
Background It is well-established that organizational effects of sex steroids during early development are fundamental for sex-typical displays of, for example, mating and aggressive behaviors in rodents and other species. Male and female brains are known to differ with respect to neuronal morphology in particular regions of the brain, including the number and size of neurons, and the density and length of dendrites in nuclei of hypothalamus and amygdala. The aim of the present study was to use global proteomics to identify proteins differentially expressed in hypothalamus/amygdala during early development (postnatal day 8) of male, female and conditional androgen receptor knockout (ARNesDel) male mice, lacking androgen receptors specifically in the brain. Furthermore, verification of selected sexually dimorphic proteins was performed using targeted proteomics. Results Our proteomic approach, iTRAQ, allowed us to investigate expression differences in the 2998 most abundantly expressed proteins in our dissected tissues. Approximately 170 proteins differed between the sexes, and 38 proteins between ARNesDel and control males (p < 0.05). In line with previous explorative studies of sexually dimorphic gene expression we mainly detected subtle protein expression differences (fold changes <1.3). The protein MARCKS (myristoylated alanine rich C kinase substrate), having the largest fold change of the proteins selected from the iTRAQ analyses and of known importance for synaptic transmission and dendritic branching, was confirmed by targeted proteomics as differentially expressed between the sexes. Conclusions Overall, our results provide solid evidence that a large number of proteins show sex differences in their brain expression and could potentially be involved in brain sexual differentiation. Furthermore, our finding of a sexually dimorphic expression of MARCKS in the brain during development warrants further investigation on the involvement in sexual differentiation of this protein. Electronic supplementary material The online version of this article (doi:10.1186/s12868-016-0332-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anna Zettergren
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden.,Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Sara Karlsson
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden
| | - Erik Studer
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden
| | - Anna Sarvimäki
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden
| | - Petronella Kettunen
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.,Department of Neuropathology, Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Annika Thorsell
- The Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Carina Sihlbom
- The Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Lars Westberg
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, POB 431, 405 30, Göteborg, Sweden.
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Chen T, Yu Y, Tang LJ, Kong L, Zhang CH, Chu HY, Yin LW, Ma HY. Neural stem cells over-expressing brain-derived neurotrophic factor promote neuronal survival and cytoskeletal protein expression in traumatic brain injury sites. Neural Regen Res 2017; 12:433-439. [PMID: 28469658 PMCID: PMC5399721 DOI: 10.4103/1673-5374.202947] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Cytoskeletal proteins are involved in neuronal survival. Brain-derived neurotrophic factor can increase expression of cytoskeletal proteins during regeneration after axonal injury. However, the effect of neural stem cells genetically modified by brain-derived neurotrophic factor transplantation on neuronal survival in the injury site still remains unclear. To examine this, we established a rat model of traumatic brain injury by controlled cortical impact. At 72 hours after injury, 2 × 107 cells/mL neural stem cells overexpressing brain-derived neurotrophic factor or naive neural stem cells (3 mL) were injected into the injured cortex. At 1–3 weeks after transplantation, expression of neurofilament 200, microtubule-associated protein 2, actin, calmodulin, and beta-catenin were remarkably increased in the injury sites. These findings confirm that brain-derived neurotrophic factor-transfected neural stem cells contribute to neuronal survival, growth, and differentiation in the injury sites. The underlying mechanisms may be associated with increased expression of cytoskeletal proteins and the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Tao Chen
- Department of Neurosurgery, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Yan Yu
- Department of Histology and Embryology, Dalian Medical University, Dalian, Liaoning Province, China
| | - Liu-Jiu Tang
- Department of Histology and Embryology, Dalian Medical University, Dalian, Liaoning Province, China
| | - Li Kong
- Department of Histology and Embryology, Dalian Medical University, Dalian, Liaoning Province, China
| | - Cheng-Hong Zhang
- Department of Histology and Embryology, Dalian Medical University, Dalian, Liaoning Province, China
| | - Hai-Ying Chu
- Department of Histology and Embryology, Dalian Medical University, Dalian, Liaoning Province, China
| | - Liang-Wei Yin
- Department of Oncology, Dalian Central Hospital, Dalian, Liaoning Province, China
| | - Hai-Ying Ma
- Department of Histology and Embryology, Dalian Medical University, Dalian, Liaoning Province, China
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Caprara GA, Morabito C, Perni S, Navarra R, Guarnieri S, Mariggiò MA. Evidence for Altered Ca 2+ Handling in Growth Associated Protein 43-Knockout Skeletal Muscle. Front Physiol 2016; 7:493. [PMID: 27833566 PMCID: PMC5080375 DOI: 10.3389/fphys.2016.00493] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/11/2016] [Indexed: 11/13/2022] Open
Abstract
Neuronal growth-associated protein 43 (GAP43) has crucial roles in the nervous system, and during development, regeneration after injury, and learning and memory. GAP43 is expressed in mouse skeletal muscle fibers and satellite cells, with suggested its involvement in intracellular Ca2+ handling. However, the physiological role of GAP43 in muscle remains unknown. Using a GAP43-knockout (GAP43-/-) mouse, we have defined the role of GAP43 in skeletal muscle. GAP43-/- mice showed low survival beyond weaning, reduced adult body weight, decreased muscle strength, and changed myofiber ultrastructure, with no significant differences in the expression of markers of satellite cell and myotube progression through the myogenic program. Thus, GAP43 expression is involved in timing of muscle maturation in-vivo. Intracellular Ca2+ measurements in-vitro in myotubes revealed GAP43 involvement in Ca2+ handling. In the absence of GAP43 expression, the spontaneous Ca2+ variations had greater amplitudes and higher frequency. In GAP43-/- myotubes, also the intracellular Ca2+ variations induced by the activation of dihydropyridine and ryanodine Ca2+ channels, resulted modified. These evidences suggested dysregulation of Ca2+ homeostasis. The emerging hypothesis indicates that GAP43 interacts with calmodulin to indirectly modulate the activities of dihydropyridine and ryanodine Ca2+ channels. This thus influences intracellular Ca2+ dynamics and its related intracellular patterns, from functional excitation-contraction coupling, to cell metabolism, and gene expression.
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Affiliation(s)
- Giusy A Caprara
- Laboratory of Functional Biotechnology, Center of Sciences on Aging and Translational Medicine (CeSI-MeT), Department of Neuroscience, Imaging and Clinical Sciences, University G. d'Annunzio of Chieti-Pescara Chieti, Italy
| | - Caterina Morabito
- Laboratory of Functional Biotechnology, Center of Sciences on Aging and Translational Medicine (CeSI-MeT), Department of Neuroscience, Imaging and Clinical Sciences, University G. d'Annunzio of Chieti-Pescara Chieti, Italy
| | - Stefano Perni
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania Philadelphia, PA, USA
| | - Riccardo Navarra
- Department of Neuroscience, Imaging and Clinical Sciences, University G. d'Annunzio of Chieti-Pescara Chieti, Italy
| | - Simone Guarnieri
- Laboratory of Functional Biotechnology, Center of Sciences on Aging and Translational Medicine (CeSI-MeT), Department of Neuroscience, Imaging and Clinical Sciences, University G. d'Annunzio of Chieti-Pescara Chieti, Italy
| | - Maria A Mariggiò
- Laboratory of Functional Biotechnology, Center of Sciences on Aging and Translational Medicine (CeSI-MeT), Department of Neuroscience, Imaging and Clinical Sciences, University G. d'Annunzio of Chieti-Pescara Chieti, Italy
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Kurzbach D, Flamm AG, Sára T. Network representation of protein interactions-Experimental results. Protein Sci 2016; 25:1628-36. [PMID: 27272395 PMCID: PMC5338234 DOI: 10.1002/pro.2964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 05/31/2016] [Indexed: 01/23/2023]
Abstract
A graph theoretical analysis of nuclear magnetic resonance (NMR) data of six different protein interactions has been presented. The representation of the protein interaction data as a graph or network reveals that all of the studied interactions are based on a common functional concept. They all involve a single densely packed hub of functionally correlated residues that mediate the ligand binding events. This is found independent of the kind of protein (folded or unfolded) or ligand (protein, polymer or small molecule). Furthermore, the power of the graph analysis is demonstrated at the examples of the Calmodulin (CaM)/Calcium and the Cold Shock Protein A (CspA)/RNA interaction. The presented approach enables the precise determination of multiple binding sites for the respective ligand molecules.
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Affiliation(s)
- Dennis Kurzbach
- Departement de Chimie, Ecole Normale SuperieurePSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM)24 rue Lhomond75005ParisFrance
| | - Andrea G. Flamm
- Department for Structural and Computational BiologyUniversity of ViennaCampus Vienna BioCenter 5Vienna1030Austria
| | - Tomáš Sára
- Department for Structural and Computational BiologyUniversity of ViennaCampus Vienna BioCenter 5Vienna1030Austria
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Trubiani O, Guarnieri S, Diomede F, Mariggiò MA, Merciaro I, Morabito C, Cavalcanti MFXB, Cocco L, Ramazzotti G. Nuclear translocation of PKCα isoenzyme is involved in neurogenic commitment of human neural crest-derived periodontal ligament stem cells. Cell Signal 2016; 28:1631-41. [PMID: 27478064 DOI: 10.1016/j.cellsig.2016.07.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 07/27/2016] [Accepted: 07/27/2016] [Indexed: 12/15/2022]
Abstract
Stem cells isolated from human adult tissue niche represent a promising source for neural differentiation. Human Periodontal Ligament Stem Cells (hPDLSCs) originating from the neural crest are particularly suitable for induction of neural commitment. In this study, under xeno-free culture conditions, in undifferentiated hPDLSCs and in hPDLSCs induced to neuronal differentiation by basic Fibroblast Growth Factor, the level of some neural markers have been analyzed. The hPDLSCs spontaneously express Nestin, a neural progenitor marker. In these cells, the neurogenic process induced to rearrange the cytoskeleton, form neurospheres and express higher levels of Nestin and Tyrosine Hydroxylase, indicating neural induction. Protein Kinase C (PKC) is highly expressed in neural tissue and has a key role in neuronal functions. In particular the Ca(2+) and diacylglycerol-dependent activation of PKCα isozyme is involved in the regulation of neuronal differentiation. Another main component of the pathways controlling neuronal differentiation is the Growth Associated Protein-43 (GAP-43), whose activity is strictly regulated by PKC. The aim of this study is to investigate the role of PKCα/GAP-43 nuclear signal transduction pathway during neuronal commitment of hPDLSCs. During hPDLSCs neurogenic commitment the levels of p-PKC and p-GAP-43 increased both in cytoplasmic and nuclear compartment. PKCα nuclear translocation induced GAP-43 movement to the cytoplasm, where it is known to regulate growth cone dynamics and neuronal differentiation. Moreover, the degree of cytosolic Ca(2+) mobilization appeared to be more pronounced in differentiated hPDLSCs than in undifferentiated cells. This study provides evidences of a new PKCα/GAP-43 nuclear signalling pathway that controls neuronal differentiation in hPDLSCs, leading the way to a potential use of these cells in cell-based therapy in neurodegenerative diseases.
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Affiliation(s)
- Oriana Trubiani
- Stem Cells and Regenerative Medicine Laboratory, Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio", Chieti-Pescara, via dei Vestini, 31, 66100 Chieti, Italy.
| | - Simone Guarnieri
- Department of Neuroscience, Imaging and Clinical Sciences - CeSI-MET, University "G. d'Annunzio", Chieti-Pescara, via dei Vestini, 31, 66100 Chieti, Italy
| | - Francesca Diomede
- Stem Cells and Regenerative Medicine Laboratory, Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio", Chieti-Pescara, via dei Vestini, 31, 66100 Chieti, Italy
| | - Maria A Mariggiò
- Department of Neuroscience, Imaging and Clinical Sciences - CeSI-MET, University "G. d'Annunzio", Chieti-Pescara, via dei Vestini, 31, 66100 Chieti, Italy
| | - Ilaria Merciaro
- Stem Cells and Regenerative Medicine Laboratory, Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio", Chieti-Pescara, via dei Vestini, 31, 66100 Chieti, Italy
| | - Caterina Morabito
- Department of Neuroscience, Imaging and Clinical Sciences - CeSI-MET, University "G. d'Annunzio", Chieti-Pescara, via dei Vestini, 31, 66100 Chieti, Italy
| | - Marcos F X B Cavalcanti
- Faculté de Médecine, UMR 7365 CNRS-Université de Lorraine, 9, avenue de la Forêt de Haye, 54500 Vandoeuvre-lés-Nancy, France; Cruzeiro do Sul University, Rua Galvão Bueno 868, 01506-000 São Paulo, SP, Brazil
| | - Lucio Cocco
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, via Irnerio 48, 40126 Bologna, Italy
| | - Giulia Ramazzotti
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, via Irnerio 48, 40126 Bologna, Italy
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Mehrabian M, Brethour D, Williams D, Wang H, Arnould H, Schneider B, Schmitt-Ulms G. Prion Protein Deficiency Causes Diverse Proteome Shifts in Cell Models That Escape Detection in Brain Tissue. PLoS One 2016; 11:e0156779. [PMID: 27327609 PMCID: PMC4915660 DOI: 10.1371/journal.pone.0156779] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 05/19/2016] [Indexed: 12/13/2022] Open
Abstract
A popular method for studying the function of a given protein is to generate and characterize a suitable model deficient for its expression. For the prion protein (PrP), best known for its role in several invariably fatal neurodegenerative diseases, a natural choice, therefore, would be to undertake such studies with brain samples. We recently documented the surprising observation that PrP deficiency caused a loss or enhancement of NCAM1 polysialylation, dependent on the cell model used. To identify possible causes for this disparity, we set out to systematically investigate the consequence of PrP deficiency on the global proteome in brain tissue and in four distinct cell models. Here we report that PrP deficiency causes robust but surprisingly divergent changes to the global proteomes of cell models but has no discernible impact on the global brain proteome. Amongst >1,500 proteins whose levels were compared in wild-type and PrP-deficient models, members of the MARCKS protein family exhibited pronounced, yet cell model-dependent changes to their steady-state levels. Follow-up experiments revealed that PrP collaborates with members of the MARCKS protein family in its control of NCAM1 polysialylation. We conclude that the physiological function of PrP may be masked in analyses of complex brain samples but its cell-type specific influence on a lipid raft-based NCAM1-related cell biology comes to the fore in investigations of specific cell types.
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Affiliation(s)
- Mohadeseh Mehrabian
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
- Departments of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada
| | - Dylan Brethour
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
- Departments of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada
| | - Declan Williams
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
- Departments of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada
| | - Hansen Wang
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
| | - Hélène Arnould
- French Institute of Health and Medical Research (INSERM), Paris, France, and University Paris Descartes, Paris, France
| | - Benoit Schneider
- French Institute of Health and Medical Research (INSERM), Paris, France, and University Paris Descartes, Paris, France
| | - Gerold Schmitt-Ulms
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
- Departments of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada
- * E-mail:
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Kurzbach D. Network representation of protein interactions: Theory of graph description and analysis. Protein Sci 2016; 25:1617-27. [PMID: 27272236 DOI: 10.1002/pro.2963] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 05/31/2016] [Indexed: 12/12/2022]
Abstract
A methodological framework is presented for the graph theoretical interpretation of NMR data of protein interactions. The proposed analysis generalizes the idea of network representations of protein structures by expanding it to protein interactions. This approach is based on regularization of residue-resolved NMR relaxation times and chemical shift data and subsequent construction of an adjacency matrix that represents the underlying protein interaction as a graph or network. The network nodes represent protein residues. Two nodes are connected if two residues are functionally correlated during the protein interaction event. The analysis of the resulting network enables the quantification of the importance of each amino acid of a protein for its interactions. Furthermore, the determination of the pattern of correlations between residues yields insights into the functional architecture of an interaction. This is of special interest for intrinsically disordered proteins, since the structural (three-dimensional) architecture of these proteins and their complexes is difficult to determine. The power of the proposed methodology is demonstrated at the example of the interaction between the intrinsically disordered protein osteopontin and its natural ligand heparin.
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Affiliation(s)
- Dennis Kurzbach
- Departement de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France
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Domínguez M, de Oliveira E, Odena MA, Portero M, Pamplona R, Ferrer I. Redox proteomic profiling of neuroketal-adducted proteins in human brain: Regional vulnerability at middle age increases in the elderly. Free Radic Biol Med 2016; 95:1-15. [PMID: 26968793 DOI: 10.1016/j.freeradbiomed.2016.02.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 02/03/2016] [Accepted: 02/27/2016] [Indexed: 02/08/2023]
Abstract
Protein lipoxidation was assessed in the parietal cortex (PC), frontal cortex (FC), and cingulate gyrus (CG) in middle-aged and old-aged individuals with no clinical manifestations of cognitive impairment, in order to increase understanding of regional brain vulnerability to oxidative damage during aging. Twenty-five lipoxidized proteins were identified in all the three regions although with regional specificities, by using redox proteomics to detect target proteins of neuroketals (NKT) adduction. The number of cases with NKT-adducted proteins was higher in old-aged individuals but most oxidized proteins were already present in middle-aged individuals. Differences in vulnerability to oxidation were dependent on the sub-cellular localization, secondary structure, and external exposition of certain amino acids. Lipoxidized proteins included those involved in energy metabolism, cytoskeleton, proteostasis, neurotransmission and O2/CO2, and heme metabolism. Total NKT and soluble oligomer levels were estimated employing slot-blot, and these were compared between age groups. Oligomers increased with age in PC and FC; NKT significantly increased with age in FC, whereas total NKT and oligomer levels were not modified in CG, thus highlighting differences in brain regional vulnerability with age. Oligomers significantly correlated with NKT levels in the three cortical regions, suggesting that protein NKT adduction parallels soluble oligomer formation.
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Affiliation(s)
- Mayelín Domínguez
- Institute of Neuropathology, University Hospital of Bellvitge, IDIBELL (Biomedical Research Institute of Bellvitge), Carrer Feixa Llarga sn, 08907 Hospitalet de Llobregat, Spain.
| | | | | | - Manuel Portero
- Department of Experimental Medicine, University of Lleida-Biomedical Research Institute of Lleida, 25198 Lleida, Spain.
| | - Reinald Pamplona
- Department of Experimental Medicine, University of Lleida-Biomedical Research Institute of Lleida, 25198 Lleida, Spain.
| | - Isidro Ferrer
- Institute of Neuropathology, University Hospital of Bellvitge, IDIBELL (Biomedical Research Institute of Bellvitge), Carrer Feixa Llarga sn, 08907 Hospitalet de Llobregat, Spain; Department of Pathology and Experimental Therapeutics, University of Barcelona, Carrer Feixa Llarga sn, 08907 Hospitalet de Llobregat, Spain; CIBERNED (Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas), Spain.
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38
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Forsova OS, Zakharov VV. High-order oligomers of intrinsically disordered brain proteins BASP1 and GAP-43 preserve the structural disorder. FEBS J 2016; 283:1550-69. [PMID: 26918762 DOI: 10.1111/febs.13692] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 01/26/2016] [Accepted: 02/23/2016] [Indexed: 11/30/2022]
Abstract
Brain acid-soluble protein-1 (BASP1) and growth-associated protein-43 (GAP-43) are presynaptic membrane proteins participating in axon guidance, neuroregeneration and synaptic plasticity. They are presumed to sequester phosphatidylinositol-4,5-bisphosphate (PIP2 ) in lipid rafts. Previously we have shown that the proteins form heterogeneously sized oligomers in the presence of anionic phospholipids or SDS at submicellar concentration. BASP1 and GAP-43 are intrinsically disordered proteins (IDPs). In light of this, we investigated the structure of their oligomers. Using partial cross-linking of the oligomers with glutaraldehyde, the aggregation numbers of BASP1 and GAP-43 were estimated as 10-14 and 6-7 monomer subunits, respectively. The cross-linking pattern indicated that the subunits are circularly arranged. The circular dichroism (CD) spectra of the monomers were characteristic of coil-like IDPs showing unordered structure with a high population of polyproline-II conformation. The oligomerization was accompanied by a minor CD spectral change attributable to formation of a small amount of α-helix. The number of residues in the α-helical conformation was estimated as 13 in BASP1 and 18 in GAP-43. However, the overall structure of the oligomers remained disordered, indicating a high degree of 'fuzziness'. This was confirmed by measuring the hydrodynamic dimensions of the oligomers using polyacrylamide gradient gel electrophoresis and size-exclusion chromatography, and by assaying their sensitivity to proteolytic digestion. There is evidence that the observed α-helical folding occurs within the basic effector domains, which are presumably tethered together via anionic molecules of SDS or PIP2 . We conclude that BASP1 and GAP-43 oligomers preserve a mostly disordered structure, which may be of great importance for their function in PIP2 signaling pathway.
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Affiliation(s)
- Oksana S Forsova
- Molecular and Radiation Biophysics Division, B. P. Konstantinov Petersburg Nuclear Physics Institute, National Research Centre 'Kurchatov Institute', Gatchina, Russia.,Laboratory of Natural Polymers, Institute of Macromolecular Compounds, Russian Academy of Sciences, St Petersburg, Russia
| | - Vladislav V Zakharov
- Molecular and Radiation Biophysics Division, B. P. Konstantinov Petersburg Nuclear Physics Institute, National Research Centre 'Kurchatov Institute', Gatchina, Russia.,Laboratory of Natural Polymers, Institute of Macromolecular Compounds, Russian Academy of Sciences, St Petersburg, Russia.,Department of Biophysics, Institute of Physics, Nanotechnology and Telecommunications, Peter the Great St Petersburg Polytechnic University, Russia
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Molecular mechanisms of the non-coenzyme action of thiamin in brain: biochemical, structural and pathway analysis. Sci Rep 2015. [PMID: 26212886 PMCID: PMC4515825 DOI: 10.1038/srep12583] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Thiamin (vitamin B1) is a pharmacological agent boosting central metabolism through the action of the coenzyme thiamin diphosphate (ThDP). However, positive effects, including improved cognition, of high thiamin doses in neurodegeneration may be observed without increased ThDP or ThDP-dependent enzymes in brain. Here, we determine protein partners and metabolic pathways where thiamin acts beyond its coenzyme role. Malate dehydrogenase, glutamate dehydrogenase and pyridoxal kinase were identified as abundant proteins binding to thiamin- or thiazolium-modified sorbents. Kinetic studies, supported by structural analysis, revealed allosteric regulation of these proteins by thiamin and/or its derivatives. Thiamin triphosphate and adenylated thiamin triphosphate activate glutamate dehydrogenase. Thiamin and ThDP regulate malate dehydrogenase isoforms and pyridoxal kinase. Thiamin regulation of enzymes related to malate-aspartate shuttle may impact on malate/citrate exchange, responsible for exporting acetyl residues from mitochondria. Indeed, bioinformatic analyses found an association between thiamin- and thiazolium-binding proteins and the term acetylation. Our interdisciplinary study shows that thiamin is not only a coenzyme for acetyl-CoA production, but also an allosteric regulator of acetyl-CoA metabolism including regulatory acetylation of proteins and acetylcholine biosynthesis. Moreover, thiamin action in neurodegeneration may also involve neurodegeneration-related 14-3-3, DJ-1 and β-amyloid precursor proteins identified among the thiamin- and/or thiazolium-binding proteins.
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40
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Efimova SS, Zakharov VV, Ostroumova OS. Effects of dipole modifiers on channel-forming activity of amyloid and amyloid-like peptides in lipid bilayers. ACTA ACUST UNITED AC 2015. [DOI: 10.1134/s1990519x15030049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Kobayashi Y, da Silva R, Kumanogoh H, Miyata S, Sato C, Kitajima K, Nakamura S, Morita M, Hayashi F, Maekawa S. Ganglioside contained in the neuronal tissue-enriched acidic protein of 22 kDa (NAP-22) fraction prepared from the detergent-resistant membrane microdomain of rat brain inhibits the phosphatase activity of calcineurin. J Neurosci Res 2015; 93:1462-70. [PMID: 25981177 DOI: 10.1002/jnr.23599] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 04/22/2015] [Accepted: 04/23/2015] [Indexed: 11/05/2022]
Abstract
Neurons have well-developed membrane microdomains called "rafts" that are recovered as a detergent-resistant membrane microdomain fraction (DRM). Neuronal tissue-enriched acidic protein of 22 kDa (NAP-22) is one of the major protein components of neuronal DRM. To determine the cellular function of NAP-22, interacting proteins were screened with an immunoprecipitation assay, and calcineurin (CaN) was detected. Further studies with NAP-22 prepared from DRM and CaN expressed in bacteria showed the binding of these proteins and a dose-dependent inhibitory effect of the NAP-22 fraction on the phosphatase activity of CaN. On the other hand, NAP-22 expressed in bacteria showed low binding to CaN and a weak inhibitory effect on phosphatase activity. To solve this discrepancy, identification of a nonprotein component that modulates CaN activity in the DRM-derived NAP-22 fraction was attempted. After lyophilization, a lipid fraction was extracted with chloroform/methanol. The lipid fraction showed an inhibitory effect on CaN without NAP-22, and further fractionation of the extract with thin-layer chromatography showed the presence of several lipid bands having an inhibitory effect on CaN. The mobility of these bands coincided with that of authentic ganglioside (GM1a, GD1a, GD1b, and GT1b), and authentic ganglioside showed an inhibitory effect on CaN. Treatment of lipid with endoglycoceramidase, which degrades ganglioside to glycochain and ceramide, caused a diminution of the inhibitory effect. These results show that DRM-derived NAP-22 binds several lipids, including ganglioside, and that ganglioside inhibits the phosphatase activity of CaN.
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Affiliation(s)
- Yuumi Kobayashi
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
| | - Ronan da Silva
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
| | - Haruko Kumanogoh
- Division of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Shinji Miyata
- Bioscience and Biotechnology Center, Nagoya University, Nagoya, Japan
| | - Chihiro Sato
- Bioscience and Biotechnology Center, Nagoya University, Nagoya, Japan
| | - Ken Kitajima
- Bioscience and Biotechnology Center, Nagoya University, Nagoya, Japan
| | - Shun Nakamura
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Japan
| | - Mistuhiro Morita
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
| | - Fumio Hayashi
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
| | - Shohei Maekawa
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
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Su J, Gao T, Shi T, Xiang Q, Xu X, Wiesenfeld-Hallin Z, Hökfelt T, Svensson CI. Phenotypic changes in dorsal root ganglion and spinal cord in the collagen antibody-induced arthritis mouse model. J Comp Neurol 2015; 523:1505-28. [DOI: 10.1002/cne.23749] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 12/26/2014] [Accepted: 01/24/2015] [Indexed: 12/31/2022]
Affiliation(s)
- Jie Su
- Department of Physiology and Pharmacology; Karolinska Institutet; Stockholm 171 77 Sweden
| | - Tianle Gao
- Department of Physiology and Pharmacology; Karolinska Institutet; Stockholm 171 77 Sweden
| | - Tiejun Shi
- Department of Neuroscience; Karolinska Institutet; Stockholm 171 77 Sweden
| | - Qiong Xiang
- Department of Neuroscience; Karolinska Institutet; Stockholm 171 77 Sweden
| | - Xiaojun Xu
- Department of Physiology and Pharmacology; Karolinska Institutet; Stockholm 171 77 Sweden
| | | | - Tomas Hökfelt
- Department of Neuroscience; Karolinska Institutet; Stockholm 171 77 Sweden
| | - Camilla I. Svensson
- Department of Physiology and Pharmacology; Karolinska Institutet; Stockholm 171 77 Sweden
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Obis T, Besalduch N, Hurtado E, Nadal L, Santafe MM, Garcia N, Tomàs M, Priego M, Lanuza MA, Tomàs J. The novel protein kinase C epsilon isoform at the adult neuromuscular synapse: location, regulation by synaptic activity-dependent muscle contraction through TrkB signaling and coupling to ACh release. Mol Brain 2015; 8:8. [PMID: 25761522 PMCID: PMC4348107 DOI: 10.1186/s13041-015-0098-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 01/16/2015] [Indexed: 12/03/2022] Open
Abstract
Background Protein kinase C (PKC) regulates a variety of neural functions, including neurotransmitter release. Although various PKC isoforms can be expressed at the synaptic sites and specific cell distribution may contribute to their functional diversity, little is known about the isoform-specific functions of PKCs in neuromuscular synapse. The present study is designed to examine the location of the novel isoform nPKCε at the neuromuscular junction (NMJ), their synaptic activity-related expression changes, its regulation by muscle contraction, and their possible involvement in acetylcholine release. Results We use immunohistochemistry and confocal microscopy to demonstrate that the novel isoform nPKCε is exclusively located in the motor nerve terminals of the adult rat NMJ. We also report that electrical stimulation of synaptic inputs to the skeletal muscle significantly increased the amount of nPKCε isoform as well as its phosphorylated form in the synaptic membrane, and muscle contraction is necessary for these nPKCε expression changes. The results also demonstrate that synaptic activity-induced muscle contraction promotes changes in presynaptic nPKCε through the brain-derived neurotrophic factor (BDNF)-mediated tyrosine kinase receptor B (TrkB) signaling. Moreover, nPKCε activity results in phosphorylation of the substrate MARCKS involved in actin cytoskeleton remodeling and related with neurotransmission. Finally, blocking nPKCε with a nPKCε-specific translocation inhibitor peptide (εV1-2) strongly reduces phorbol ester-induced ACh release potentiation, which further indicates that nPKCε is involved in neurotransmission. Conclusions Together, these results provide a mechanistic insight into how synaptic activity-induced muscle contraction could regulate the presynaptic action of the nPKCε isoform and suggest that muscle contraction is an important regulatory step in TrkB signaling at the NMJ.
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Affiliation(s)
- Teresa Obis
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Núria Besalduch
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Erica Hurtado
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Laura Nadal
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Manel M Santafe
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Neus Garcia
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Marta Tomàs
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Mercedes Priego
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Maria A Lanuza
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
| | - Josep Tomàs
- Unitat d'Histologia i Neurobiologia (UHN). Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Sant Llorenç 21, 43201, Reus, Spain.
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RCCS bioreactor-based modelled microgravity induces significant changes on in vitro 3D neuroglial cell cultures. BIOMED RESEARCH INTERNATIONAL 2015; 2015:754283. [PMID: 25654124 PMCID: PMC4309310 DOI: 10.1155/2015/754283] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 09/10/2014] [Accepted: 09/10/2014] [Indexed: 11/18/2022]
Abstract
We propose a human-derived neuro-/glial cell three-dimensional in vitro model to investigate the effects of microgravity on cell-cell interactions. A rotary cell-culture system (RCCS) bioreactor was used to generate a modelled microgravity environment, and morphofunctional features of glial-like GL15 and neuronal-like SH-SY5Y cells in three-dimensional individual cultures (monotypic aggregates) and cocultures (heterotypic aggregates) were analysed. Cell survival was maintained within all cell aggregates over 2 weeks of culture. Moreover, compared to cells as traditional static monolayers, cell aggregates cultured under modelled microgravity showed increased expression of specific differentiation markers (e.g., GL15 cells: GFAP, S100B; SH-SY5Y cells: GAP43) and modulation of functional cell-cell interactions (e.g., N-CAM and Cx43 expression and localisation). In conclusion, this culture model opens a wide range of specific investigations at the molecular, biochemical, and morphological levels, and it represents an important tool for in vitro studies into dynamic interactions and responses of nervous system cell components to microgravity environmental conditions.
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Caprara GA, Perni S, Morabito C, Mariggiò MA, Guarnieri S. Specific association of growth-associated protein 43 with calcium release units in skeletal muscles of lower vertebrates. Eur J Histochem 2014; 58:2453. [PMID: 25578978 PMCID: PMC4289850 DOI: 10.4081/ejh.2014.2453] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/06/2014] [Accepted: 11/06/2014] [Indexed: 11/22/2022] Open
Abstract
Growth-associated protein 43 (GAP43), is a strictly conserved protein among vertebrates implicated in neuronal development and neurite branching. Since GAP43 structure contains a calmodulin-binding domain, this protein is able to bind calmodulin and gather it nearby membrane network, thus regulating cytosolic calcium and consequently calcium-dependent intracellular events. Even if for many years GAP43 has been considered a neuronal-specific protein, evidence from different laboratories described its presence in myoblasts, myotubes and adult skeletal muscle fibers. Data from our laboratory showed that GAP43 is localized between calcium release units (CRUs) and mitochondria in mammalian skeletal muscle suggesting that, also in skeletal muscle, this protein can be a key player in calcium/calmodulin homeostasis. However, the previous studies could not clearly distinguish between a mitochondrion- or a triad-related positioning of GAP43. To solve this question, the expression and localization of GAP43 was studied in skeletal muscle of Xenopus and Zebrafish known to have triads located at the level of the Z-lines and mitochondria not closely associated with them. Western blotting and immunostaining experiments revealed the expression of GAP43 also in skeletal muscle of lower vertebrates (like amphibians and fishes), and that the protein is localized closely to the triad junction. Once more, these results and GAP43 structural features, support an involvement of the protein in the dynamic intracellular Ca2+ homeostasis, a common conserved role among the different species.
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Haldipur P, Dupuis N, Degos V, Moniaux N, Chhor V, Rasika S, Schwendimann L, le Charpentier T, Rougier E, Amouyal P, Amouyal G, Dournaud P, Bréchot C, El Ghouzzi V, Faivre J, Fleiss B, Mani S, Gressens P. HIP/PAP prevents excitotoxic neuronal death and promotes plasticity. Ann Clin Transl Neurol 2014; 1:739-54. [PMID: 25493266 PMCID: PMC4241802 DOI: 10.1002/acn3.127] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 07/18/2014] [Accepted: 07/30/2014] [Indexed: 12/31/2022] Open
Abstract
Objectives Excitotoxicity plays a significant role in the pathogenesis of perinatal brain injuries. Among the consequences of excessive activation of the N-methyl-d-aspartate (NMDA)-type glutamate are oxidative stress caused by free radical release from damaged mitochondria, neuronal death and subsequent loss of connectivity. Drugs that could protect nervous tissue and support regeneration are attractive therapeutic options. The hepatocarcinoma intestine pancreas protein/pancreatitis-associated protein I (HIP/PAP) or Reg3α, which is approved for clinical testing for the protection and regeneration of the liver, is upregulated in the central nervous system following injury or disease. Here, we examined the neuroprotective/neuroregenerative potential of HIP/PAP following excitotoxic brain injury. Methods We studied the expression of HIP/PAP and two of its putative effectors, cAMP-regulated phosphoprotein 19 (ARPP19) and growth-associated protein 43 (GAP-43), in the neonatal brain, and the protective/regenerative properties of HIP/PAP in three paradigms of perinatal excitotoxicity: intracerebral injection of the NMDA agonist ibotenate in newborn pups, a pediatric model of traumatic brain injury, and cultured primary cortical neurons. Results HIP/PAP, ARPP19, and GAP-43 were expressed in the neonatal mouse brain. HIP/PAP prevented the formation of cortical and white matter lesions and reduced neuronal death and glial activation following excitotoxic insults in vivo. In vitro, HIP/PAP promoted neuronal survival, preserved neurite complexity and fasciculation, and protected cell contents from reactive oxygen species (ROS)-induced damage. Interpretation HIP/PAP has strong neuroprotective/neuroregenerative potential following excitotoxic injury to the developing brain, and could represent an interesting therapeutic strategy in perinatal brain injury.
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Affiliation(s)
- Parthiv Haldipur
- National Brain Research Centre Manesar, India ; Centre for Neuroscience, IISC Bangalore, India
| | - Nina Dupuis
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France
| | - Vincent Degos
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France
| | - Nicolas Moniaux
- Inserm U785, Centre Hépatobiliaire Villejuif, France ; Faculté de Médecine, Université Paris-Sud Villejuif, France
| | - Vibol Chhor
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France ; Division of Imaging Sciences and Biomedical Engineering, Centre for the Developing Brain, King's College London, King's Health Partners, St. Thomas' Hospital London, United Kingdom
| | - Sowmyalakshmi Rasika
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France
| | - Leslie Schwendimann
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France
| | - Tifenn le Charpentier
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France
| | - Elodie Rougier
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France
| | | | | | - Pascal Dournaud
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France
| | - Christian Bréchot
- Inserm U785, Centre Hépatobiliaire Villejuif, France ; Faculté de Médecine, Université Paris-Sud Villejuif, France
| | - Vincent El Ghouzzi
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France
| | - Jamila Faivre
- Inserm U785, Centre Hépatobiliaire Villejuif, France ; Faculté de Médecine, Université Paris-Sud Villejuif, France
| | - Bobbi Fleiss
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France ; Division of Imaging Sciences and Biomedical Engineering, Centre for the Developing Brain, King's College London, King's Health Partners, St. Thomas' Hospital London, United Kingdom
| | - Shyamala Mani
- National Brain Research Centre Manesar, India ; Centre for Neuroscience, IISC Bangalore, India
| | - Pierre Gressens
- Inserm U1141 Paris, France ; Univ Paris Diderot, Sorbonne Paris Cité UMRS 1141, Paris, France ; PremUP Paris, France ; Division of Imaging Sciences and Biomedical Engineering, Centre for the Developing Brain, King's College London, King's Health Partners, St. Thomas' Hospital London, United Kingdom
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Two domains of the smoothelin-like 1 protein bind apo- and calcium–calmodulin independently. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1844:1580-90. [DOI: 10.1016/j.bbapap.2014.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 05/14/2014] [Accepted: 05/24/2014] [Indexed: 12/24/2022]
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Abstract
The WT1 (Wilms' tumour 1) gene encodes a zinc finger transcription factor and RNA-binding protein that direct the development of several organs and tissues. WT1 manifests both tumour suppressor and oncogenic activities, but the reasons behind these opposing functions are still not clear. As a transcriptional regulator, WT1 can either activate or repress numerous target genes resulting in disparate biological effects such as growth, differentiation and apoptosis. The complex nature of WT1 is exemplified by a plethora of isoforms, post-translational modifications and multiple binding partners. How WT1 achieves specificity to regulate a large number of target genes involved in diverse physiological processes is the focus of the present review. We discuss the wealth of the growing molecular information that defines our current understanding of the versatility and utility of WT1 as a master regulator of organ development, a tumour suppressor and an oncogene.
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Igarashi M. Proteomic identification of the molecular basis of mammalian CNS growth cones. Neurosci Res 2014; 88:1-15. [PMID: 25066522 DOI: 10.1016/j.neures.2014.07.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 06/13/2014] [Accepted: 07/02/2014] [Indexed: 11/28/2022]
Abstract
The growth cone, which is a unique structure with high motility that forms at the tips of extending axons and dendrites, is crucial to neuronal network formation. Axonal growth of the mammalian CNS is most likely achieved by the complicated coordination of cytoskeletal rearrangement and vesicular trafficking via many proteins. Before recent advances, no methods to identify numerous proteins existed; however, proteomics revolutionarily resolved such problems. In this review, I summarize the profiles of the mammalian growth cone proteins revealed by proteomics as the molecular basis of the growth cone functions, with molecular mapping. These results should be used as a basis for understanding the mechanisms of the complex mammalian CNS developmental process.
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Affiliation(s)
- Michihiro Igarashi
- Department of Neurochemistry and Molecular Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan; Trans-disciplinary Program, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan.
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Cadet JL, Brannock C, Jayanthi S, Krasnova IN. Transcriptional and epigenetic substrates of methamphetamine addiction and withdrawal: evidence from a long-access self-administration model in the rat. Mol Neurobiol 2014; 51:696-717. [PMID: 24939695 PMCID: PMC4359351 DOI: 10.1007/s12035-014-8776-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 06/01/2014] [Indexed: 01/06/2023]
Abstract
Methamphetamine use disorder is a chronic neuropsychiatric disorder characterized by recurrent binge episodes, intervals of abstinence, and relapses to drug use. Humans addicted to methamphetamine experience various degrees of cognitive deficits and other neurological abnormalities that complicate their activities of daily living and their participation in treatment programs. Importantly, models of methamphetamine addiction in rodents have shown that animals will readily learn to give themselves methamphetamine. Rats also accelerate their intake over time. Microarray studies have also shown that methamphetamine taking is associated with major transcriptional changes in the striatum measured within a short or longer time after cessation of drug taking. After a 2-h withdrawal time, there was increased expression of genes that participate in transcription regulation. These included cyclic AMP response element binding (CREB), ETS domain-containing protein (ELK1), and members of the FOS family of transcription factors. Other genes of interest include brain-derived neurotrophic factor (BDNF), tyrosine kinase receptor, type 2 (TrkB), and synaptophysin. Methamphetamine-induced transcription was found to be regulated via phosphorylated CREB-dependent events. After a 30-day withdrawal from methamphetamine self-administration, however, there was mostly decreased expression of transcription factors including junD. There was also downregulation of genes whose protein products are constituents of chromatin-remodeling complexes. Altogether, these genome-wide results show that methamphetamine abuse might be associated with altered regulation of a diversity of gene networks that impact cellular and synaptic functions. These transcriptional changes might serve as triggers for the neuropsychiatric presentations of humans who abuse this drug. Better understanding of the way that gene products interact to cause methamphetamine addiction will help to develop better pharmacological treatment of methamphetamine addicts.
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Affiliation(s)
- Jean Lud Cadet
- Molecular Neuropsychiatry Research Branch, Intramural Research Program, National Institute on Drug Abuse, NIH, DHHS, 251 Bayview Boulevard, Baltimore, MD, 21224, USA,
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