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Cui Q, Liang S, Li H, Guo Y, Lv J, Wang X, Qin P, Xu H, Huang TY, Lu Y, Tian Q, Zhang T. SNX17 Mediates Dendritic Spine Maturation via p140Cap. Mol Neurobiol 2024; 61:1346-1362. [PMID: 37704928 DOI: 10.1007/s12035-023-03620-4] [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: 01/11/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023]
Abstract
Sorting nexin17 (SNX17) is a member of the sorting nexin family, which plays a crucial role in endosomal trafficking. Previous research has shown that SNX17 is involved in the recycling or degradation of various proteins associated with neurodevelopmental and neurological diseases in cell models. However, the significance of SNX17 in neurological function in the mouse brain has not been thoroughly investigated. In this study, we generated Snx17 knockout mice and observed that the homozygous deletion of Snx17 (Snx17-/-) resulted in lethality. On the other hand, heterozygous mutant mice (Snx17+/-) exhibited anxiety-like behavior with a reduced preference for social novelty. Furthermore, Snx17 haploinsufficiency led to impaired synaptic transmission and reduced maturation of dendritic spines. Through GST pulldown and interactome analysis, we identified the SRC kinase inhibitor, p140Cap, as a potential downstream target of SNX17. We also demonstrated that the interaction between p140Cap and SNX17 is crucial for dendritic spine maturation. Together, this study provides the first in vivo evidence highlighting the important role of SNX17 in maintaining neuronal function, as well as regulating social novelty and anxiety-like behaviors.
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Affiliation(s)
- Qiuyan Cui
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Shiqi Liang
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hao Li
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yiqing Guo
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Junkai Lv
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xinyuan Wang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Chongqing, 400016, China
| | - Pengwei Qin
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Huaxi Xu
- Institute for Brain Science and Disease, Chongqing Medical University, Chongqing, 400016, China
| | - Timothy Y Huang
- Degenerative Diseases Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, 92037, USA
| | - Youming Lu
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Qing Tian
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Tongmei Zhang
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Department of Histology and Embryology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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2
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Matsuki T, Hamada N, Ito H, Sugawara R, Iwamoto I, Nakayama A, Nagata KI. Expression analysis of type I ARF small GTPases ARF1-3 during mouse brain development. Mol Biol Rep 2024; 51:106. [PMID: 38227057 DOI: 10.1007/s11033-023-09142-5] [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: 07/12/2023] [Accepted: 12/11/2023] [Indexed: 01/17/2024]
Abstract
BACKGROUND ARF (ADP-ribosylation factor) GTPases are major regulators of intracellular trafficking, and classified into 3 groups (Type I - III), among which the type I group members, ARF1 and 3, are responsible genes for neurodevelopmental disorders. METHODS In this study, we analysed the expression of Type I ARFs ARF1-3 during mouse brain development using biochemical and morphological methods. RESULTS Western blotting analyses revealed that ARF1-3 are weakly expressed in the mouse brain at embryonic day 13 and gradually increase until postnatal day 30. ARF1-3 appear to be abundantly expressed in various telencephalon regions. Biochemical fractionation studies detected ARF1-3 in the synaptosome fraction of cortical neurons containing both pre- and post-synapses, however ARF1-3 were not observed in post-synaptic compartments. In immunohistochemical analyses, ARF1-3 appeared to be distributed in the cytoplasm and dendrites of cortical and hippocampal neurons as well as in the cerebellar molecular layer including dendrites of Purkinje cells and granule cell axons. Immunofluorescence in primary cultured hippocampal neurons revealed that ARF1-3 are diffusely distributed in the cytoplasm and dendrites with partial colocalization with a pre-synaptic marker, synaptophysin. CONCLUSIONS Overall, our results support the notion that ARF1-3 could participate in vesicle trafficking both in the dendritic shaft (excluding spines) and axon terminals (pre-synaptic compartments).
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Affiliation(s)
- Tohru Matsuki
- Department of Cellular Pathology, Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan
| | - Nanako Hamada
- Department of Molecular Neurobiology Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan
| | - Hidenori Ito
- Department of Molecular Neurobiology Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan
| | - Ryota Sugawara
- Department of Molecular Neurobiology Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan
| | - Ikuko Iwamoto
- Department of Molecular Neurobiology Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan
| | - Atsuo Nakayama
- Department of Cellular Pathology, Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan
- Department of Neurochemistry, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Nagoya, 466-8550, Japan
| | - Koh-Ichi Nagata
- Department of Molecular Neurobiology Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan.
- Department of Neurochemistry, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Nagoya, 466-8550, Japan.
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3
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Camera M, Russo I, Zamboni V, Ammoni A, Rando S, Morellato A, Cimino I, Angelini C, Giacobini P, Oleari R, Amoruso F, Cariboni A, Franceschini I, Turco E, Defilippi P, Merlo GR. p140Cap Controls Female Fertility in Mice Acting via Glutamatergic Afference on Hypothalamic Gonadotropin-Releasing Hormone Neurons. Front Neurosci 2022; 16:744693. [PMID: 35237119 PMCID: PMC8884249 DOI: 10.3389/fnins.2022.744693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
p140Cap, encoded by the gene SRCIN1 (SRC kinase signaling inhibitor 1), is an adaptor/scaffold protein highly expressed in the mouse brain, participating in several pre- and post-synaptic mechanisms. p140Cap knock-out (KO) female mice show severe hypofertility, delayed puberty onset, altered estrus cycle, reduced ovulation, and defective production of luteinizing hormone and estradiol during proestrus. We investigated the role of p140Cap in the development and maturation of the hypothalamic gonadotropic system. During embryonic development, migration of Gonadotropin-Releasing Hormone (GnRH) neurons from the nasal placode to the forebrain in p140Cap KO mice appeared normal, and young p140Cap KO animals showed a normal number of GnRH-immunoreactive (-ir) neurons. In contrast, adult p140Cap KO mice showed a significant loss of GnRH-ir neurons and a decreased density of GnRH-ir projections in the median eminence, accompanied by reduced levels of GnRH and LH mRNAs in the hypothalamus and pituitary gland, respectively. We examined the number of kisspeptin (KP) neurons in the rostral periventricular region of the third ventricle, the number of KP-ir fibers in the arcuate nucleus, and the number of KP-ir punctae on GnRH neurons but we found no significant changes. Consistently, the responsiveness to exogenous KP in vivo was unchanged, excluding a cell-autonomous defect on the GnRH neurons at the level of KP receptor or its signal transduction. Since glutamatergic signaling in the hypothalamus is critical for both puberty onset and modulation of GnRH secretion, we examined the density of glutamatergic synapses in p140Cap KO mice and observed a significant reduction in the density of VGLUT-ir punctae both in the preoptic area and on GnRH neurons. Our data suggest that the glutamatergic circuitry in the hypothalamus is altered in the absence of p140Cap and is required for female fertility.
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Affiliation(s)
- Mattia Camera
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Isabella Russo
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Valentina Zamboni
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Alessandra Ammoni
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Simona Rando
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Alessandro Morellato
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Irene Cimino
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, Jean-Pierre Aubert Research Centre, Inserm U1172, Lille, France
- Metabolic Research Laboratories, Wellcome Trust–Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge, United Kingdom
| | - Costanza Angelini
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Paolo Giacobini
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, Jean-Pierre Aubert Research Centre, Inserm U1172, Lille, France
| | - Roberto Oleari
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Federica Amoruso
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Anna Cariboni
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Isabelle Franceschini
- Physiologie de la Reproduction et des Comportements, French National Centre for Scientific Research, French Institute of the Horse and Riding, French National Research Institute for Agriculture, Food and Environment, Université de Tours, Nouzilly, France
| | - Emilia Turco
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Paola Defilippi
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
- *Correspondence: Paola Defilippi,
| | - Giorgio R. Merlo
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
- Giorgio R. Merlo,
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4
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Noda M, Ito H, Nagata KI. Physiological significance of WDR45, a responsible gene for β-propeller protein associated neurodegeneration (BPAN), in brain development. Sci Rep 2021; 11:22568. [PMID: 34799629 PMCID: PMC8604945 DOI: 10.1038/s41598-021-02123-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 11/08/2021] [Indexed: 12/22/2022] Open
Abstract
WDR45 plays an essential role in the early stage of autophagy. De novo heterozygous mutations in WDR45 have been known to cause β-propeller protein-associated neurodegeneration (BPAN), a subtype of neurodegeneration with brain iron accumulation (NBIA). Although BPAN patients display global developmental delay with intellectual disability, the neurodevelopmental pathophysiology of BPAN remains largely unknown. In the present study, we analyzed the physiological role of Wdr45 and pathophysiological significance of the gene abnormality during mouse brain development. Morphological and biochemical analyses revealed that Wdr45 is expressed in a developmental stage-dependent manner in mouse brain. Wdr45 was also found to be located in excitatory synapses by biochemical fractionation. Since WDR45 mutations are thought to cause protein degradation, we conducted acute knockdown experiments by in utero electroporation in mice to recapitulate the pathophysiological conditions of BPAN. Knockdown of Wdr45 caused abnormal dendritic development and synaptogenesis during corticogenesis, both of which were significantly rescued by co-expression with RNAi-resistant version of Wdr45. In addition, terminal arbors of callosal axons were less developed in Wdr45-deficient cortical neurons of adult mouse when compared to control cells. These results strongly suggest a pathophysiological significance of WDR45 gene abnormalities in neurodevelopmental aspects of BPAN.
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Affiliation(s)
- Mariko Noda
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan
| | - Hidenori Ito
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan
| | - Koh-Ichi Nagata
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, 480-0392, Japan.
- Department of Neurochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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5
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Salemme V, Angelini C, Chapelle J, Centonze G, Natalini D, Morellato A, Taverna D, Turco E, Ala U, Defilippi P. The p140Cap adaptor protein as a molecular hub to block cancer aggressiveness. Cell Mol Life Sci 2020; 78:1355-1367. [PMID: 33079227 PMCID: PMC7904710 DOI: 10.1007/s00018-020-03666-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 09/03/2020] [Accepted: 10/05/2020] [Indexed: 01/03/2023]
Abstract
The p140Cap adaptor protein is a scaffold molecule encoded by the SRCIN1 gene, which is physiologically expressed in several epithelial tissues and in the neurons. However, p140Cap is also strongly expressed in a significant subset of cancers including breast cancer and neuroblastoma. Notably, cancer patients with high p140Cap expression in their primary tumors have a lower probability of developing a distant event and ERBB2-positive breast cancer sufferers show better survival. In neuroblastoma patients, SRCIN1 mRNA levels represent an independent risk factor, which is inversely correlated to disease aggressiveness. Consistent with clinical data, SRCIN1 gain or loss of function mouse models demonstrated that p140Cap may affect tumor growth and metastasis formation by controlling the signaling pathways involved in tumorigenesis and metastatic features. This study reviews data showing the relevance of SRCIN1/p140Cap in cancer patients, the impact of SRCIN1 status on p140Cap expression, the specific mechanisms through which p140Cap can limit cancer progression, the molecular functions regulated by p140Cap, along with the p140Cap interactome, to unveil its key role for patient stratification in clinics.
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Affiliation(s)
- Vincenzo Salemme
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy
| | - Costanza Angelini
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy
| | - Jennifer Chapelle
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy
| | - Giorgia Centonze
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy
| | - Dora Natalini
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy
| | - Alessandro Morellato
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy
| | - Daniela Taverna
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy
| | - Emilia Turco
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy
| | - Ugo Ala
- Department of Veterinary Sciences, Università degli Studi di Torino, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy.
| | - Paola Defilippi
- Department of Molecular Biotechnology and Health Science, Università degli Studi di Torino, Via Nizza 52, 10126, Torino, Italy.
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6
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Russo I, Gavello D, Menna E, Vandael D, Veglia C, Morello N, Corradini I, Focchi E, Alfieri A, Angelini C, Bianchi FT, Morellato A, Marcantoni A, Sassoè-Pognetto M, Ottaviani MM, Yekhlef L, Giustetto M, Taverna S, Carabelli V, Matteoli M, Carbone E, Turco E, Defilippi P. p140Cap Regulates GABAergic Synaptogenesis and Development of Hippocampal Inhibitory Circuits. Cereb Cortex 2020; 29:91-105. [PMID: 29161354 DOI: 10.1093/cercor/bhx306] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/23/2017] [Indexed: 01/19/2023] Open
Abstract
The neuronal scaffold protein p140Cap was investigated during hippocampal network formation. p140Cap is present in presynaptic GABAergic terminals and its genetic depletion results in a marked alteration of inhibitory synaptic activity. p140Cap-/- cultured neurons display higher frequency of miniature inhibitory postsynaptic currents (mIPSCs) with no changes of their mean amplitude. Consistent with a potential presynaptic alteration of basal GABA release, p140Cap-/- neurons exhibit a larger synaptic vesicle readily releasable pool, without any variation of single GABAA receptor unitary currents and number of postsynaptic channels. Furthermore, p140Cap-/- neurons show a premature and enhanced network synchronization and appear more susceptible to 4-aminopyridine-induced seizures in vitro and to kainate-induced seizures in vivo. The hippocampus of p140Cap-/- mice showed a significant increase in the number of both inhibitory synapses and of parvalbumin- and somatostatin-expressing interneurons. Specific deletion of p140Cap in forebrain interneurons resulted in increased susceptibility to in vitro epileptic events and increased inhibitory synaptogenesis, comparable to those observed in p140Cap-/- mice. Altogether, our data demonstrate that p140Cap finely tunes inhibitory synaptogenesis and GABAergic neurotransmission, thus regulating the establishment and maintenance of the proper hippocampal excitatory/inhibitory balance.
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Affiliation(s)
- Isabella Russo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Daniela Gavello
- Department of Drug Science, University of Torino, Torino, Italy.,NIS Centre of Excellence, Torino, Italy
| | - Elisabetta Menna
- Institute of Neuroscience, CNR, Milano, Italy.,Istituto Clinico Humanitas, IRCCS, Rozzano, Italy
| | - David Vandael
- Department of Drug Science, University of Torino, Torino, Italy.,NIS Centre of Excellence, Torino, Italy
| | - Carola Veglia
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Noemi Morello
- Department of Neuroscience, University of Torino, Torino, Italy
| | - Irene Corradini
- Institute of Neuroscience, CNR, Milano, Italy.,Istituto Clinico Humanitas, IRCCS, Rozzano, Italy
| | | | - Annalisa Alfieri
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Costanza Angelini
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Federico Tommaso Bianchi
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Orbassano, Italy
| | - Alessandro Morellato
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Andrea Marcantoni
- Department of Drug Science, University of Torino, Torino, Italy.,NIS Centre of Excellence, Torino, Italy
| | - Marco Sassoè-Pognetto
- Department of Neuroscience, University of Torino, Torino, Italy.,National Institute of Neuroscience-Italy, Torino, Italy
| | | | - Latefa Yekhlef
- Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Maurizio Giustetto
- Department of Neuroscience, University of Torino, Torino, Italy.,National Institute of Neuroscience-Italy, Torino, Italy
| | - Stefano Taverna
- Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Valentina Carabelli
- Department of Drug Science, University of Torino, Torino, Italy.,NIS Centre of Excellence, Torino, Italy
| | - Michela Matteoli
- Institute of Neuroscience, CNR, Milano, Italy.,Istituto Clinico Humanitas, IRCCS, Rozzano, Italy
| | - Emilio Carbone
- Department of Drug Science, University of Torino, Torino, Italy.,NIS Centre of Excellence, Torino, Italy
| | - Emilia Turco
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Paola Defilippi
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
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7
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Ito H, Mizuno M, Noguchi K, Morishita R, Iwamoto I, Hara A, Nagata KI. Expression analyses of Phactr1 (phosphatase and actin regulator 1) during mouse brain development. Neurosci Res 2018; 128:50-57. [DOI: 10.1016/j.neures.2017.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 08/03/2017] [Accepted: 08/07/2017] [Indexed: 12/18/2022]
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8
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Li MY, Miao WY, Wu QZ, He SJ, Yan G, Yang Y, Liu JJ, Taketo MM, Yu X. A Critical Role of Presynaptic Cadherin/Catenin/p140Cap Complexes in Stabilizing Spines and Functional Synapses in the Neocortex. Neuron 2017. [PMID: 28641114 DOI: 10.1016/j.neuron.2017.05.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The formation of functional synapses requires coordinated assembly of presynaptic transmitter release machinery and postsynaptic trafficking of functional receptors and scaffolds. Here, we demonstrate a critical role of presynaptic cadherin/catenin cell adhesion complexes in stabilizing functional synapses and spines in the developing neocortex. Importantly, presynaptic expression of stabilized β-catenin in either layer (L) 4 excitatory neurons or L2/3 pyramidal neurons significantly upregulated excitatory synaptic transmission and dendritic spine density in L2/3 pyramidal neurons, while its sparse postsynaptic expression in L2/3 neurons had no such effects. In addition, presynaptic β-catenin expression enhanced release probability of glutamatergic synapses. Newly identified β-catenin-interacting protein p140Cap is required in the presynaptic locus for mediating these effects. Together, our results demonstrate that cadherin/catenin complexes stabilize functional synapses and spines through anterograde signaling in the neocortex and provide important molecular evidence for a driving role of presynaptic components in spinogenesis in the neocortex.
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Affiliation(s)
- Min-Yin Li
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wan-Ying Miao
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Qiu-Zi Wu
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Shun-Ji He
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Guoquan Yan
- Institute of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Yanrui Yang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology and CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jia-Jia Liu
- University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology and CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Beijing 100101, China
| | - M Mark Taketo
- Division of Experimental Therapeutics, Graduate School of Medicine, Kyoto University, Yoshida Konoé-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Xiang Yu
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China.
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9
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Alfieri A, Sorokina O, Adrait A, Angelini C, Russo I, Morellato A, Matteoli M, Menna E, Boeri Erba E, McLean C, Armstrong JD, Ala U, Buxbaum JD, Brusco A, Couté Y, De Rubeis S, Turco E, Defilippi P. Synaptic Interactome Mining Reveals p140Cap as a New Hub for PSD Proteins Involved in Psychiatric and Neurological Disorders. Front Mol Neurosci 2017; 10:212. [PMID: 28713243 PMCID: PMC5492163 DOI: 10.3389/fnmol.2017.00212] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 06/15/2017] [Indexed: 01/21/2023] Open
Abstract
Altered synaptic function has been associated with neurological and psychiatric conditions including intellectual disability, schizophrenia and autism spectrum disorder (ASD). Amongst the recently discovered synaptic proteins is p140Cap, an adaptor that localizes at dendritic spines and regulates their maturation and physiology. We recently showed that p140Cap knockout mice have cognitive deficits, impaired long-term potentiation (LTP) and long-term depression (LTD), and immature, filopodia-like dendritic spines. Only a few p140Cap interacting proteins have been identified in the brain and the molecular complexes and pathways underlying p140Cap synaptic function are largely unknown. Here, we isolated and characterized the p140Cap synaptic interactome by co-immunoprecipitation from crude mouse synaptosomes, followed by mass spectrometry-based proteomics. We identified 351 p140Cap interactors and found that they cluster to sub complexes mostly located in the postsynaptic density (PSD). p140Cap interactors converge on key synaptic processes, including transmission across chemical synapses, actin cytoskeleton remodeling and cell-cell junction organization. Gene co-expression data further support convergent functions: the p140Cap interactors are tightly co-expressed with each other and with p140Cap. Importantly, the p140Cap interactome and its co-expression network show strong enrichment in genes associated with schizophrenia, autism, bipolar disorder, intellectual disability and epilepsy, supporting synaptic dysfunction as a shared biological feature in brain diseases. Overall, our data provide novel insights into the molecular organization of the synapse and indicate that p140Cap acts as a hub for postsynaptic complexes relevant to psychiatric and neurological disorders.
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Affiliation(s)
- Annalisa Alfieri
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università di TorinoTorino, Italy
| | - Oksana Sorokina
- The Institute for Adaptive and Neural Computation, School of Informatics, University of EdinburghEdinburgh, United Kingdom
| | - Annie Adrait
- Université Grenoble Alpes, iRTSV-BGEGrenoble, France.,CEA, iRTSV-BGEGrenoble, France.,Institut National de la Santé et de la Recherche Médicale, BGEGrenoble, France
| | - Costanza Angelini
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università di TorinoTorino, Italy
| | - Isabella Russo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università di TorinoTorino, Italy
| | - Alessandro Morellato
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università di TorinoTorino, Italy
| | - Michela Matteoli
- Institute of Neuroscience, Consiglio Nazionale delle Ricerche (CNR)Milan, Italy.,Humanitas Clinical and Research Center, IRCCSRozzano, Italy
| | - Elisabetta Menna
- Institute of Neuroscience, Consiglio Nazionale delle Ricerche (CNR)Milan, Italy.,Humanitas Clinical and Research Center, IRCCSRozzano, Italy
| | - Elisabetta Boeri Erba
- Institut de Biologie Structurale, Université Grenoble AlpesGrenoble, France.,CEA, DSV, IBSGrenoble, France.,Centre National de la Recherche Scientifique, IBSGrenoble, France
| | - Colin McLean
- The Institute for Adaptive and Neural Computation, School of Informatics, University of EdinburghEdinburgh, United Kingdom
| | - J Douglas Armstrong
- The Institute for Adaptive and Neural Computation, School of Informatics, University of EdinburghEdinburgh, United Kingdom
| | - Ugo Ala
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università di TorinoTorino, Italy.,GenoBiToUS-Genomics and Bioinformatics, Università di TorinoTurin, Italy
| | - Joseph D Buxbaum
- Seaver Autism Center for Research and Treatment, Department of Psychiatry, Icahn School of Medicine at Mount SinaiNew York, NY, United States.,Department of Psychiatry, Icahn School of Medicine at Mount SinaiNew York, NY, United States.,Department of Neuroscience, Icahn School of Medicine at Mount SinaiNew York, NY, United States.,Friedman Brain Institute, Icahn School of Medicine at Mount SinaiNew York, NY, United States.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount SinaiNew York, NY, United States.,Mindich Child Health and Development Institute, Icahn School of Medicine at Mount SinaiNew York, NY, United States
| | - Alfredo Brusco
- Department of Medical Sciences, Università di TorinoTurin, Italy.,Medical Genetics Unit, Azienda Ospedaliera Città della Salute e della Scienza di TorinoTurin, Italy
| | - Yohann Couté
- Université Grenoble Alpes, iRTSV-BGEGrenoble, France.,CEA, iRTSV-BGEGrenoble, France.,Institut National de la Santé et de la Recherche Médicale, BGEGrenoble, France
| | - Silvia De Rubeis
- Seaver Autism Center for Research and Treatment, Department of Psychiatry, Icahn School of Medicine at Mount SinaiNew York, NY, United States.,Department of Psychiatry, Icahn School of Medicine at Mount SinaiNew York, NY, United States
| | - Emilia Turco
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università di TorinoTorino, Italy
| | - Paola Defilippi
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università di TorinoTorino, Italy
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10
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van de Willige D, Hoogenraad CC, Akhmanova A. Microtubule plus-end tracking proteins in neuronal development. Cell Mol Life Sci 2016; 73:2053-77. [PMID: 26969328 PMCID: PMC4834103 DOI: 10.1007/s00018-016-2168-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 02/04/2016] [Accepted: 02/22/2016] [Indexed: 11/28/2022]
Abstract
Regulation of the microtubule cytoskeleton is of pivotal importance for neuronal development and function. One such regulatory mechanism centers on microtubule plus-end tracking proteins (+TIPs): structurally and functionally diverse regulatory factors, which can form complex macromolecular assemblies at the growing microtubule plus-ends. +TIPs modulate important properties of microtubules including their dynamics and their ability to control cell polarity, membrane transport and signaling. Several neurodevelopmental and neurodegenerative diseases are associated with mutations in +TIPs or with misregulation of these proteins. In this review, we focus on the role and regulation of +TIPs in neuronal development and associated disorders.
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Affiliation(s)
- Dieudonnée van de Willige
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Casper C Hoogenraad
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands.
| | - Anna Akhmanova
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands.
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11
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Chang RYK, Etheridge N, Nouwens AS, Dodd PR. SWATH analysis of the synaptic proteome in Alzheimer's disease. Neurochem Int 2015; 87:1-12. [PMID: 25958317 DOI: 10.1016/j.neuint.2015.04.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 04/20/2015] [Accepted: 04/21/2015] [Indexed: 10/23/2022]
Abstract
Brain tissue from Alzheimer's disease patients exhibits synaptic degeneration in selected regions. Synaptic dysfunction occurs early in the disease and is a primary pathological target for treatment. The molecular mechanisms underlying this degeneration remain unknown. Quantifying the synaptic proteome in autopsy brain and comparing tissue from Alzheimer's disease cases and subjects with normal aging are critical to understanding the molecular mechanisms associated with Alzheimer pathology. We isolated synaptosomes from hippocampus and motor cortex so as to reduce sample complexity relative to whole-tissue homogenates. Synaptosomal extracts were subjected to strong cation exchange (SCX) fractionation to further partition sample complexity; each fraction received SWATH-based information-dependent acquisition to generate a comprehensive peptide-ion library. The expression of synaptic proteins from AD hippocampus and motor cortex was then compared between groups. A total of 2077 unique proteins were identified at a critical local false discovery rate <5%. Thirty of these, including 17 novel proteins, exhibited significant expression differences between cases and controls; these proteins are involved in cellular functions including structural maintenance, signal transduction, autophagy, oxidative stress, and proteasome activity, or they have synaptic-vesicle related or energy-related functions. Differentially expressed proteins were subjected to pathway analysis to identify protein-protein interactions. This revealed that the most perturbed molecular and cellular functions were cellular assembly and organization. Core analysis revealed RhoA signaling to be the top canonical pathway. Network analysis showed that differentially expressed proteins were related to cellular assembly and organization, and cellular function and maintenance. This is the first study to combine SCX fractionation with SWATH analysis. SWATH is a promising new technique that can greatly enhance protein identification in any proteome, and has many other benefits; however, there are limitations yet to be resolved.
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Affiliation(s)
| | - Naomi Etheridge
- School of Chemistry and Molecular Biosciences, University of Queensland, Australia
| | - Amanda S Nouwens
- School of Chemistry and Molecular Biosciences, University of Queensland, Australia
| | - Peter R Dodd
- School of Chemistry and Molecular Biosciences, University of Queensland, Australia.
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12
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Xu X, Wang W, Su N, Zhu X, Yao J, Gao W, Hu Z, Sun Y. miR-374a promotes cell proliferation, migration and invasion by targeting SRCIN1 in gastric cancer. FEBS Lett 2014; 589:407-13. [PMID: 25554419 DOI: 10.1016/j.febslet.2014.12.027] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 12/11/2014] [Accepted: 12/18/2014] [Indexed: 12/25/2022]
Abstract
MicroRNAs (miRNAs) play a prominent role in gastric cancer (GC) initiation and progression. In this study, we found that miR-374a expression was up-regulated in human GC cell lines and tissues. Inhibition of miR-374a suppressed GC cell proliferation, migration and invasion in vitro and slowed tumor growth in vivo. SRC kinase signaling inhibitor 1 (SRCIN1) was identified as a direct target of miR-374a. Silencing of SRCIN1 significantly enhanced cell proliferation, migration and invasion, whereas SRCIN1 reintroduction partially abrogated the oncogenic effects of miR-374a. Taken together, these findings suggest that miR-374a functions as a candidate oncogene in GC by directly targeting SRCIN1. miR-374a may therefore be useful as a promising therapeutic target for malignant GC.
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Affiliation(s)
- Xinyun Xu
- Department of General Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, PR China
| | - Weijun Wang
- Department of General Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, PR China
| | - Ning Su
- Department of General Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, PR China
| | - Xujun Zhu
- Department of General Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, PR China
| | - Jun Yao
- Department of General Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, PR China
| | - Wenchao Gao
- Department of General Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, PR China
| | - Zhiqian Hu
- Department of General Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, PR China
| | - Yanping Sun
- Department of General Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, PR China.
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13
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The NAP motif of activity-dependent neuroprotective protein (ADNP) regulates dendritic spines through microtubule end binding proteins. Mol Psychiatry 2014; 19:1115-24. [PMID: 25178163 DOI: 10.1038/mp.2014.97] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 06/14/2014] [Accepted: 07/08/2014] [Indexed: 12/29/2022]
Abstract
The NAP motif of activity-dependent neuroprotective protein (ADNP) enhanced memory scores in patients suffering from mild cognitive impairment and protected activities of daily living in schizophrenia patients, while fortifying microtubule (MT)-dependent axonal transport, in mice and flies. The question is how does NAP fortify MTs? Our sequence analysis identified the MT end-binding protein (EB1)-interacting motif SxIP (SIP, Ser-Ile-Pro) in ADNP/NAP and showed specific SxIP binding sites in all members of the EB protein family (EB1-3). Others found that EB1 enhancement of neurite outgrowth is attenuated by EB2, while EB3 interacts with postsynaptic density protein 95 (PSD-95) to modulate dendritic plasticity. Here, NAP increased PSD-95 expression in dendritic spines, which was inhibited by EB3 silencing. EB1 or EB3, but not EB2 silencing inhibited NAP-mediated cell protection, which reflected NAP binding specificity. NAPVSKIPQ (SxIP=SKIP), but not NAPVAAAAQ mimicked NAP activity. ADNP, essential for neuronal differentiation and brain formation in mouse, a member of the SWI/SNF chromatin remodeling complex and a major protein mutated in autism and deregulated in schizophrenia in men, showed similar EB interactions, which were enhanced by NAP treatment. The newly identified shared MT target of NAP/ADNP is directly implicated in synaptic plasticity, explaining the breadth and efficiency of neuroprotective/neurotrophic capacities.
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14
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p140Cap regulates memory and synaptic plasticity through Src-mediated and citron-N-mediated actin reorganization. J Neurosci 2014; 34:1542-53. [PMID: 24453341 DOI: 10.1523/jneurosci.2341-13.2014] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A major challenge in the neuroscience field is the identification of molecules and pathways that control synaptic plasticity and memory. Dendritic spines play a pivotal role in these processes, as the major sites of excitatory synapses in neuronal communication. Previous studies have shown that the scaffold protein p140Cap localizes into dendritic spines and that its knockdown negatively modulates spine shape in culture. However, so far, there is no information on its in vivo relevance. By using a knock-out mouse model, we here demonstrate that p140Cap is a key element for both learning and synaptic plasticity. Indeed, p140Cap(-/-) mice are impaired in object recognition test, as well as in LTP and in LTD measurements. The in vivo effects of p140Cap loss are presumably attenuated by noncell-autonomous events, since primary neurons obtained from p140Cap(-/-) mice show a strong reduction in number of mushroom spines and abnormal organization of synapse-associated F-actin. These phenotypes are most likely caused by a local reduction of the inhibitory control of RhoA and of cortactin toward the actin-depolymerizing factor cofilin. These events can be controlled by p140Cap through its capability to directly inhibit the activation of Src kinase and by its binding to the scaffold protein Citron-N. Altogether, our results provide new insight into how protein associated with dynamic microtubules may regulate spine actin organization through interaction with postsynaptic density components.
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15
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SNAP-25 regulates spine formation through postsynaptic binding to p140Cap. Nat Commun 2014; 4:2136. [PMID: 23868368 DOI: 10.1038/ncomms3136] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 06/12/2013] [Indexed: 11/08/2022] Open
Abstract
Synaptosomal-associated protein of 25 kDa (SNAP-25) is a member of the Soluble N-ethylmaleimide-sensitive-factor attachment protein receptors (SNARE) protein family, required for exocytosis of synaptic vesicles and regulation of diverse ion channels. Here, we show that acute reduction of SNAP-25 expression leads to an immature phenotype of dendritic spines that are, consistently, less functional. Conversely, over-expression of SNAP-25 results in an increase in the density of mature, Postsynaptic Density protein 95 (PSD-95)-positive spines. The regulation of spine morphogenesis by SNAP-25 depends on the protein's ability to bind both the plasma membrane and the adaptor protein p140Cap, a key protein regulating actin cytoskeleton and spine formation. We propose that SNAP-25 allows the organization of the molecular apparatus needed for spine formation by recruiting and stabilizing p140Cap.
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16
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Malmquist SJ, Abramsson A, McGraw HF, Linbo TH, Raible DW. Modulation of dorsal root ganglion development by ErbB signaling and the scaffold protein Sorbs3. Development 2013; 140:3986-96. [PMID: 24004948 DOI: 10.1242/dev.084640] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The multipotent cells of the vertebrate neural crest (NC) arise at the dorsal aspect of the neural tube, then migrate throughout the developing embryo and differentiate into diverse cell types, including the sensory neurons and glia of the dorsal root ganglia (DRG). As multiple cell types are derived from this lineage, it is ideal for examining mechanisms of fate restriction during development. We have isolated a mutant, ouchless, that specifically fails to develop DRG neurons, although other NC derivatives develop normally. This mutation affects the expression of Sorbs3, a scaffold protein known to interact with proteins involved in focal adhesions and several signaling pathways. ouchless mutants share some phenotypic similarities with mutants in ErbB receptors, EGFR homologs that are implicated in diverse developmental processes and associated with several cancers; and ouchless interacts genetically with an allele of erbb3 in DRG neurogenesis. However, the defect in ouchless DRG neurogenesis is distinct from ErbB loss of function in that it is not associated with a loss of glia. Both ouchless and neurogenin1 heterozygous fish are sensitized to the effects of ErbB chemical inhibitors, which block the development of DRG in a dose-dependent manner. Inhibitors of MEK show similar effects on DRG neurogenesis. We propose a model in which Sorbs3 helps to integrate ErbB signals to promote DRG neurogenesis through the activation of MAPK and upregulation of neurogenin1.
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Affiliation(s)
- Sarah J Malmquist
- Department of Biological Structure, University of Washington, 1959 NE Pacific Street, Seattle, WA 98195, USA
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17
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Hamada N, Ito H, Iwamoto I, Mizuno M, Morishita R, Inaguma Y, Kawamoto S, Tabata H, Nagata KI. Biochemical and morphological characterization of A2BP1 in neuronal tissue. J Neurosci Res 2013; 91:1303-11. [PMID: 23918472 DOI: 10.1002/jnr.23266] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Revised: 05/14/2013] [Accepted: 05/25/2013] [Indexed: 01/08/2023]
Abstract
A2BP1 is considered to regulate alternative splicing of important neuronal transcripts and has been implicated in a variety of neurological and developmental disorders. A2BP1 was found in neuronal cells and was analyzed biochemically and morphologically. In this study, we prepared a specific antibody against A2BP1, anti-A2BP1, and carried out protein expression and localization analyses of A2BP1 in rat and mouse tissues. By Western blotting, A2BP1 showed tissue-dependent expression profiles and was expressed in a developmental-stage-dependent manner in the brain. A2BP1 was detected at high levels in neocortex and cerebellum in the rat brain. Immunohistochemical analyses demonstrated that A2BP1 was highly expressed in differentiated neurons but not in mitotically active progenitor cells in the cerebral cortex during developmental stages. In cortical neurons, A2BP1 had accumulated mainly in the nucleus and diffusely distributed in the cell body and dendrites. In differentiated primary cultured rat hippocampal neurons, although A2BP1 was enriched in the nucleus and diffusely distributed in the cytoplasm, it was found in a punctate distribution adjacent to synapses. The results suggest that in neuronal tissues A2BP1 plays important roles, which are regulated in a spatiotemporal manner.
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Affiliation(s)
- Nanako Hamada
- Institute for Developmental Research, Aichi Human Service Center, Kasugai, Aichi, Japan
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18
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Repetto D, Aramu S, Boeri Erba E, Sharma N, Grasso S, Russo I, Jensen ON, Cabodi S, Turco E, Di Stefano P, Defilippi P. Mapping of p140Cap phosphorylation sites: the EPLYA and EGLYA motifs have a key role in tyrosine phosphorylation and Csk binding, and are substrates of the Abl kinase. PLoS One 2013; 8:e54931. [PMID: 23383002 PMCID: PMC3561454 DOI: 10.1371/journal.pone.0054931] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 12/17/2012] [Indexed: 12/11/2022] Open
Abstract
Protein phosphorylation tightly regulates specific binding of effector proteins that control many diverse biological functions of cells (e. g. signaling, migration and proliferation). p140Cap is an adaptor protein, specifically expressed in brain, testis and epithelial cells, that undergoes phosphorylation and tunes its interactions with other regulatory molecules via post-translation modification. In this work, using mass spectrometry, we found that p140Cap is in vivo phosphorylated on tyrosine (Y) within the peptide GEGLpYADPYGLLHEGR (from now on referred to as EGLYA) as well as on three serine residues. Consistently, EGLYA has the highest score of in silico prediction of p140Cap phosphorylation. To further investigate the p140Cap function, we performed site specific mutagenesis on tyrosines inserted in EGLYA and EPLYA, a second sequence with the same highest score of phosphorylation. The mutant protein, in which both EPLYA/EGLYA tyrosines were converted to phenylalanine, was no longer tyrosine phosphorylated, despite the presence of other tyrosine residues in p140Cap sequence. Moreover, this mutant lost its ability to bind the C-terminal Src kinase (Csk), previously shown to interact with p140Cap by Far Western analysis. In addition, we found that in vitro and in HEK-293 cells, the Abelson kinase is the major kinase involved in p140Cap tyrosine phosphorylation on the EPLYA and EGLYA sequences. Overall, these data represent an original attempt to in vivo characterise phosphorylated residues of p140Cap. Elucidating the function of p140Cap will provide novel insights into its biological activity not only in normal cells, but also in tumors.
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Affiliation(s)
- Daniele Repetto
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
| | - Simona Aramu
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
| | | | - Nanaocha Sharma
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
| | - Silvia Grasso
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
| | - Isabella Russo
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
| | - Ole N. Jensen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Sara Cabodi
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
| | - Emilia Turco
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
| | - Paola Di Stefano
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
- * E-mail: (PD); (PDS)
| | - Paola Defilippi
- Department of Molecular Biotechnology and Health Sciences, Università degli Studi di Torino, Torino, Italy
- * E-mail: (PD); (PDS)
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19
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Yamauchi M, Sudo K, Ito H, Iwamoto I, Morishita R, Murai T, Kajita K, Ishizuka T, Nagata KI. Localization of multidomain adaptor proteins, p140Cap and vinexin, in the pancreatic islet of a spontaneous diabetes mellitus model, Otsuka Long-Evans Tokushima Fatty rats. Med Mol Morphol 2013; 46:41-8. [PMID: 23325552 DOI: 10.1007/s00795-013-0008-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Accepted: 02/10/2012] [Indexed: 01/01/2023]
Abstract
We have shown that two multidomain adaptor proteins, p140Cap and vinexin, interact with each other and are likely to be involved in neurotransmitter release. Because the basic molecular mechanism governing neurotransmitter and insulin secretion is conserved, these two proteins may also to play pivotal roles in insulin secretion. We therefore performed some characterization of p140Cap and vinexin in pancreas of a wild-type rat or a spontaneous type 2 diabetes mellitus (DM) model, the Otsuka Long-Evans Tokushima Fatty (OLETF) rat. These two proteins were detected in Wistar rat pancreas by Western blotting. Immunohistochemistry revealed that p140Cap and vinexin are enriched in β and α cells, respectively, in the rat pancreas. We then found that pancreatic islet structure was disorganized in the OLETF rat with hyperinsulinemia or with hyperglycemia, based on immunohistochemical analyses of vinexin. In β cells of these model rats, p140Cap was distributed in a cytoplasmic granular pattern as in the control rats, although its expression was reduced to various extents from cell to cell. These results may suggest possible involvement of p140Cap in insulin secretion, and reduction of p140Cap might be related to abnormal insulin secretion in DM.
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Affiliation(s)
- Masahiro Yamauchi
- Department of General Internal Medicine, Gifu University School of Medicine, Gifu, Japan
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20
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Ito H, Morishita R, Sudo K, Nishimura YV, Inaguma Y, Iwamoto I, Nagata KI. Biochemical and morphological characterization of MAGI-1 in neuronal tissue. J Neurosci Res 2012; 90:1776-81. [PMID: 22605569 DOI: 10.1002/jnr.23074] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 03/26/2012] [Accepted: 03/30/2012] [Indexed: 11/08/2022]
Abstract
The membrane-associated guanylate kinase with inverted organization (MAGI) proteins consist of three members, MAGI-1, MAGI-2 (also known as S-SCAM), and MAGI-3. Although MAGI-2 has been analyzed and shown to interact with a variety of postsynaptic proteins, functional analyses and characterization of MAGI-1 in neuronal tissues have been rare. In this study, we prepared a specific antibody against MAGI-1, anti-MAGI-1, and carried out biochemical and morphological analyses of MAGI-1 in rat neuronal tissues. By Western blotting, a high level of MAGI-1 was detected in nervous tissues, especially in olfactory bulb. Biochemical fractionation clarified that MAGI-1 was relatively enriched in the synaptosomal vesicle and synaptic plasma membrane fractions, whereas MAGI-2 and MAGI-3 appeared to be in the synaptic plasma membrane and postsynaptic density fractions. Immunofluorescent analyses revealed diffuse distribution of MAGI-1 in the cell body and processes of primary cultured rat hippocampal neurons, whereas MAGI-2 and MAGI-3 were likely to be enriched at synapses. Immunohistochemical analyses demonstrated that MAGI-1 was expressed in Purkinje cells, in hypocampal neurons in CA1 region, in the glomerulus region of olfactory bulb, and at the dorsal root entry zone in embryonic rat spinal cord. These results suggest neuronal roles of MAGI-1 different from those of MAGI-2/3.
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Affiliation(s)
- Hidenori Ito
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, Kasugai, Japan
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21
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Cabodi S, del Pilar Camacho-Leal M, Di Stefano P, Defilippi P. Integrin signalling adaptors: not only figurants in the cancer story. Nat Rev Cancer 2010; 10:858-70. [PMID: 21102636 DOI: 10.1038/nrc2967] [Citation(s) in RCA: 241] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Current evidence highlights the ability of adaptor (or scaffold) proteins to create signalling platforms that drive cellular transformation upon integrin-dependent adhesion and growth factor receptor activation. The understanding of the biological effects that are regulated by these adaptors in tumours might be crucial for the identification of new targets and the development of innovative therapeutic strategies for human cancer. In this Review we discuss the relevance of adaptor proteins in signalling that originates from integrin-mediated cell-extracellular matrix (ECM) adhesion and growth factor stimulation in the context of cell transformation and tumour progression. We specifically underline the contribution of p130 Crk-associated substrate (p130CAS; also known as BCAR1), neural precursor cell expressed, developmentally down-regulated 9 (NEDD9; also known as HEF1), CRK and the integrin-linked kinase (ILK)-pinch-parvin (IPP) complex to cancer, along with the more recently identified p140 Cas-associated protein (p140CAP; also known as SRCIN1).
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Affiliation(s)
- Sara Cabodi
- Molecular Biotechnology Centre and Department of Genetics, Biology and Biochemistry, University of Torino, Via Nizza 52, Torino 10126, Italy
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22
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Gouveia SM, Akhmanova A. Cell and Molecular Biology of Microtubule Plus End Tracking Proteins. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2010; 285:1-74. [DOI: 10.1016/b978-0-12-381047-2.00001-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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