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Ortega-Gascó A, Parcerisas A, Hino K, Herranz-Pérez V, Ulloa F, Elias-Tersa A, Bosch M, García-Verdugo JM, Simó S, Pujadas L, Soriano E. Regulation of young-adult neurogenesis and neuronal differentiation by neural cell adhesion molecule 2 (NCAM2). Cereb Cortex 2023; 33:10931-10948. [PMID: 37724425 PMCID: PMC10629901 DOI: 10.1093/cercor/bhad340] [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: 04/29/2022] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/20/2023] Open
Abstract
Adult neurogenesis persists in mammals in the neurogenic zones, where newborn neurons are incorporated into preexisting circuits to preserve and improve learning and memory tasks. Relevant structural elements of the neurogenic niches include the family of cell adhesion molecules (CAMs), which participate in signal transduction and regulate the survival, division, and differentiation of radial glial progenitors (RGPs). Here we analyzed the functions of neural cell adhesion molecule 2 (NCAM2) in the regulation of RGPs in adult neurogenesis and during corticogenesis. We characterized the presence of NCAM2 across the main cell types of the neurogenic process in the dentate gyrus, revealing different levels of NCAM2 amid the progression of RGPs and the formation of neurons. We showed that Ncam2 overexpression in adult mice arrested progenitors in an RGP-like state, affecting the normal course of young-adult neurogenesis. Furthermore, changes in Ncam2 levels during corticogenesis led to transient migratory deficits but did not affect the survival and proliferation of RGPs, suggesting a differential role of NCAM2 in adult and embryonic stages. Our data reinforce the relevance of CAMs in the neurogenic process by revealing a significant role of Ncam2 levels in the regulation of RGPs during young-adult neurogenesis in the hippocampus.
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Affiliation(s)
- Alba Ortega-Gascó
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat de Barcelona (UB), 643 Diagonal Ave., Barcelona 08028, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), CIBER, Instituto de Salud Carlos III, 4 Sinesio Delgado, Madrid 28031, Spain
| | - Antoni Parcerisas
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat de Barcelona (UB), 643 Diagonal Ave., Barcelona 08028, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), CIBER, Instituto de Salud Carlos III, 4 Sinesio Delgado, Madrid 28031, Spain
- Department of Biosciences, Faculty of Sciences, Technology and Engineering, University of Vic – Central University of Catalonia (UVic-UCC), 13 Laura St., Vic 08500, Spain
- Tissue Repair and Regeneration Laboratory (TR2Lab), Institut de Recerca i Innovació en Ciències de la Vida i de la Salut a la Catalunya Central (IRIS-CC), 70 Roda Rd., Vic 08500, Spain
- Department of Basic Sciences, International University of Catalonia (UIC), S/N Josep Trueta St., Sant Cugat del Vallès 08195, Spain
| | - Keiko Hino
- Department of Cell Biology and Human Anatomy, University of California Davis, 1275 Med Science Dr., Davis, CA 95616, USA
| | - Vicente Herranz-Pérez
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), CIBER, Instituto de Salud Carlos III, 4 Sinesio Delgado, Madrid 28031, Spain
- Laboratory of Comparative Neurobiology, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, 7 Catedràtic Agustín Escardino Benlloch St., València 46010, Spain
- Predepartamental Unit of Medicine, Faculty of Health Sciences, Jaume I University, S/N Vicent Sos Baynat Ave., Castelló de la Plana 12006, Spain
| | - Fausto Ulloa
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat de Barcelona (UB), 643 Diagonal Ave., Barcelona 08028, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), CIBER, Instituto de Salud Carlos III, 4 Sinesio Delgado, Madrid 28031, Spain
| | - Alba Elias-Tersa
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat de Barcelona (UB), 643 Diagonal Ave., Barcelona 08028, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), CIBER, Instituto de Salud Carlos III, 4 Sinesio Delgado, Madrid 28031, Spain
| | - Miquel Bosch
- Department of Basic Sciences, International University of Catalonia (UIC), S/N Josep Trueta St., Sant Cugat del Vallès 08195, Spain
| | - José Manuel García-Verdugo
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), CIBER, Instituto de Salud Carlos III, 4 Sinesio Delgado, Madrid 28031, Spain
- Laboratory of Comparative Neurobiology, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, 7 Catedràtic Agustín Escardino Benlloch St., València 46010, Spain
| | - Sergi Simó
- Department of Cell Biology and Human Anatomy, University of California Davis, 1275 Med Science Dr., Davis, CA 95616, USA
| | - Lluís Pujadas
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat de Barcelona (UB), 643 Diagonal Ave., Barcelona 08028, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), CIBER, Instituto de Salud Carlos III, 4 Sinesio Delgado, Madrid 28031, Spain
- Tissue Repair and Regeneration Laboratory (TR2Lab), Institut de Recerca i Innovació en Ciències de la Vida i de la Salut a la Catalunya Central (IRIS-CC), 70 Roda Rd., Vic 08500, Spain
- Department of Experimental Sciences and Methodology, Faculty of Heath Sciences and Wellfare, University of Vic - Central University of Catalonia (UVic-UCC), 7 Sagrada Família St., Vic 08500, Spain
| | - Eduardo Soriano
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat de Barcelona (UB), 643 Diagonal Ave., Barcelona 08028, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), CIBER, Instituto de Salud Carlos III, 4 Sinesio Delgado, Madrid 28031, Spain
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Jarahian M, Marofi F, Maashi MS, Ghaebi M, Khezri A, Berger MR. Re-Expression of Poly/Oligo-Sialylated Adhesion Molecules on the Surface of Tumor Cells Disrupts Their Interaction with Immune-Effector Cells and Contributes to Pathophysiological Immune Escape. Cancers (Basel) 2021; 13:5203. [PMID: 34680351 PMCID: PMC8534074 DOI: 10.3390/cancers13205203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 12/28/2022] Open
Abstract
Glycans linked to surface proteins are the most complex biological macromolecules that play an active role in various cellular mechanisms. This diversity is the basis of cell-cell interaction and communication, cell growth, cell migration, as well as co-stimulatory or inhibitory signaling. Our review describes the importance of neuraminic acid and its derivatives as recognition elements, which are located at the outermost positions of carbohydrate chains linked to specific glycoproteins or glycolipids. Tumor cells, especially from solid tumors, mask themselves by re-expression of hypersialylated neural cell adhesion molecule (NCAM), neuropilin-2 (NRP-2), or synaptic cell adhesion molecule 1 (SynCAM 1) in order to protect themselves against the cytotoxic attack of the also highly sialylated immune effector cells. More particularly, we focus on α-2,8-linked polysialic acid chains, which characterize carrier glycoproteins such as NCAM, NRP-2, or SynCam-1. This characteristic property correlates with an aggressive clinical phenotype and endows them with multiple roles in biological processes that underlie all steps of cancer progression, including regulation of cell-cell and/or cell-extracellular matrix interactions, as well as increased proliferation, migration, reduced apoptosis rate of tumor cells, angiogenesis, and metastasis. Specifically, re-expression of poly/oligo-sialylated adhesion molecules on the surface of tumor cells disrupts their interaction with immune-effector cells and contributes to pathophysiological immune escape. Further, sialylated glycoproteins induce immunoregulatory cytokines and growth factors through interactions with sialic acid-binding immunoglobulin-like lectins. We describe the processes, which modulate the interaction between sialylated carrier glycoproteins and their ligands, and illustrate that sialic acids could be targets of novel therapeutic strategies for treatment of cancer and immune diseases.
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Affiliation(s)
- Mostafa Jarahian
- German Cancer Research Center, Toxicology and Chemotherapy Unit Heidelberg, 69120 Heidelberg, Germany;
| | - Faroogh Marofi
- Department of Hematology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 5165665931, Iran;
| | - Marwah Suliman Maashi
- Stem Cells and Regenerative Medicine Unit at King Fahad Medical Research Centre, Jeddah 11211, Saudi Arabia;
| | - Mahnaz Ghaebi
- Cancer Gene Therapy Research Center (CGRC), Zanjan University of Medical Sciences, Zanjan 4513956184, Iran;
| | - Abdolrahman Khezri
- Department of Biotechnology, Inland Norway University of Applied Sciences, 2418 Hamar, Norway;
| | - Martin R. Berger
- German Cancer Research Center, Toxicology and Chemotherapy Unit Heidelberg, 69120 Heidelberg, Germany;
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Parcerisas A, Ortega-Gascó A, Pujadas L, Soriano E. The Hidden Side of NCAM Family: NCAM2, a Key Cytoskeleton Organization Molecule Regulating Multiple Neural Functions. Int J Mol Sci 2021; 22:10021. [PMID: 34576185 PMCID: PMC8471948 DOI: 10.3390/ijms221810021] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/12/2021] [Accepted: 09/14/2021] [Indexed: 02/07/2023] Open
Abstract
Although it has been over 20 years since Neural Cell Adhesion Molecule 2 (NCAM2) was identified as the second member of the NCAM family with a high expression in the nervous system, the knowledge of NCAM2 is still eclipsed by NCAM1. The first studies with NCAM2 focused on the olfactory bulb, where this protein has a key role in axonal projection and axonal/dendritic compartmentalization. In contrast to NCAM1, NCAM2's functions and partners in the brain during development and adulthood have remained largely unknown until not long ago. Recent studies have revealed the importance of NCAM2 in nervous system development. NCAM2 governs neuronal morphogenesis and axodendritic architecture, and controls important neuron-specific processes such as neuronal differentiation, synaptogenesis and memory formation. In the adult brain, NCAM2 is highly expressed in dendritic spines, and it regulates synaptic plasticity and learning processes. NCAM2's functions are related to its ability to adapt to the external inputs of the cell and to modify the cytoskeleton accordingly. Different studies show that NCAM2 interacts with proteins involved in cytoskeleton stability and proteins that regulate calcium influx, which could also modify the cytoskeleton. In this review, we examine the evidence that points to NCAM2 as a crucial cytoskeleton regulation protein during brain development and adulthood. This key function of NCAM2 may offer promising new therapeutic approaches for the treatment of neurodevelopmental diseases and neurodegenerative disorders.
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Affiliation(s)
- Antoni Parcerisas
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain; (A.O.-G.); (L.P.)
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- Department of Basic Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain
| | - Alba Ortega-Gascó
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain; (A.O.-G.); (L.P.)
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Lluís Pujadas
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain; (A.O.-G.); (L.P.)
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Eduardo Soriano
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain; (A.O.-G.); (L.P.)
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
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Parcerisas A, Ortega-Gascó A, Hernaiz-Llorens M, Odena MA, Ulloa F, de Oliveira E, Bosch M, Pujadas L, Soriano E. New Partners Identified by Mass Spectrometry Assay Reveal Functions of NCAM2 in Neural Cytoskeleton Organization. Int J Mol Sci 2021; 22:ijms22147404. [PMID: 34299022 PMCID: PMC8304497 DOI: 10.3390/ijms22147404] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 02/06/2023] Open
Abstract
Neuronal cell adhesion molecule 2 (NCAM2) is a membrane protein with an important role in the morphological development of neurons. In the cortex and the hippocampus, NCAM2 is essential for proper neuronal differentiation, dendritic and axonal outgrowth and synapse formation. However, little is known about NCAM2 functional mechanisms and its interactive partners during brain development. Here we used mass spectrometry to study the molecular interactome of NCAM2 in the second postnatal week of the mouse cerebral cortex. We found that NCAM2 interacts with >100 proteins involved in numerous processes, including neuronal morphogenesis and synaptogenesis. We validated the most relevant interactors, including Neurofilaments (NEFs), Microtubule-associated protein 2 (MAP2), Calcium/calmodulin kinase II alpha (CaMKIIα), Actin and Nogo. An in silico analysis of the cytosolic tail of the NCAM2.1 isoform revealed specific phosphorylation site motifs with a putative affinity for some of these interactors. Our results expand the knowledge of NCAM2 interactome and confirm the key role of NCAM2 in cytoskeleton organization, neuronal morphogenesis and synaptogenesis. These findings are of interest in explaining the phenotypes observed in different pathologies with alterations in the NCAM2 gene.
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Affiliation(s)
- Antoni Parcerisas
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- Department of Basic Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain;
- Correspondence: (A.P.); (E.S.)
| | - Alba Ortega-Gascó
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Marc Hernaiz-Llorens
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Maria Antonia Odena
- Plataforma de Proteòmica, Parc Científic de Barcelona (PCB), 08028 Barcelona, Spain; (M.A.O.); (E.d.O.)
| | - Fausto Ulloa
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Eliandre de Oliveira
- Plataforma de Proteòmica, Parc Científic de Barcelona (PCB), 08028 Barcelona, Spain; (M.A.O.); (E.d.O.)
| | - Miquel Bosch
- Department of Basic Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain;
| | - Lluís Pujadas
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Eduardo Soriano
- Department of Cell Biology, Physiology and Immunology, University of Barcelona and Institute of Neurosciences, 08028 Barcelona, Spain; (A.O.-G.); (M.H.-L.); (F.U.); (L.P.)
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- Correspondence: (A.P.); (E.S.)
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Parcerisas A, Pujadas L, Ortega-Gascó A, Perelló-Amorós B, Viais R, Hino K, Figueiro-Silva J, La Torre A, Trullás R, Simó S, Lüders J, Soriano E. NCAM2 Regulates Dendritic and Axonal Differentiation through the Cytoskeletal Proteins MAP2 and 14-3-3. Cereb Cortex 2020; 30:3781-3799. [PMID: 32043120 DOI: 10.1093/cercor/bhz342] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 11/27/2019] [Accepted: 01/08/2020] [Indexed: 01/13/2023] Open
Abstract
Neural cell adhesion molecule 2 (NCAM2) is involved in the development and plasticity of the olfactory system. Genetic data have implicated the NCAM2 gene in neurodevelopmental disorders including Down syndrome and autism, although its role in cortical development is unknown. Here, we show that while overexpression of NCAM2 in hippocampal neurons leads to minor alterations, its downregulation severely compromises dendritic architecture, leading to an aberrant phenotype including shorter dendritic trees, retraction of dendrites, and emergence of numerous somatic neurites. Further, our data reveal alterations in the axonal tree and deficits in neuronal polarization. In vivo studies confirm the phenotype and reveal an unexpected role for NCAM2 in cortical migration. Proteomic and cell biology experiments show that NCAM2 molecules exert their functions through a protein complex with the cytoskeletal-associated proteins MAP2 and 14-3-3γ and ζ. We provide evidence that NCAM2 depletion results in destabilization of the microtubular network and reduced MAP2 signal. Our results demonstrate a role for NCAM2 in dendritic formation and maintenance, and in neural polarization and migration, through interaction of NCAM2 with microtubule-associated proteins.
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Affiliation(s)
- Antoni Parcerisas
- Department of Cell Biology, Physiology and Immunology, and Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.,Vall d'Hebron Institut de Recerca (VHIR), 08035, Barcelona, Spain
| | - Lluís Pujadas
- Department of Cell Biology, Physiology and Immunology, and Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.,Vall d'Hebron Institut de Recerca (VHIR), 08035, Barcelona, Spain
| | - Alba Ortega-Gascó
- Department of Cell Biology, Physiology and Immunology, and Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.,Vall d'Hebron Institut de Recerca (VHIR), 08035, Barcelona, Spain
| | - Bartomeu Perelló-Amorós
- Department of Cell Biology, Physiology and Immunology, and Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.,Vall d'Hebron Institut de Recerca (VHIR), 08035, Barcelona, Spain
| | - Ricardo Viais
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), 08028, Barcelona, Spain
| | - Keiko Hino
- Department of Cell Biology and Human Anatomy, University of California, Davis, CA 95616, USA
| | - Joana Figueiro-Silva
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.,Neurobiology Unit, Institut d'Investigacions Biomèdiques de Barcelona, CSIC, IDIBAPS, 08036, Barcelona, Spain
| | - Anna La Torre
- Department of Cell Biology and Human Anatomy, University of California, Davis, CA 95616, USA
| | - Ramón Trullás
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.,Neurobiology Unit, Institut d'Investigacions Biomèdiques de Barcelona, CSIC, IDIBAPS, 08036, Barcelona, Spain
| | - Sergi Simó
- Department of Cell Biology and Human Anatomy, University of California, Davis, CA 95616, USA
| | - Jens Lüders
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), 08028, Barcelona, Spain
| | - Eduardo Soriano
- Department of Cell Biology, Physiology and Immunology, and Institute of Neurosciences, University of Barcelona, 08028 Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.,Vall d'Hebron Institut de Recerca (VHIR), 08035, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA) Academia, 08010, Barcelona, Spain
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Li W, Wang X, Li S. Investigation of copy number variations on chromosome 21 detected by comparative genomic hybridization (CGH) microarray in patients with congenital anomalies. Mol Cytogenet 2018; 11:42. [PMID: 31061677 PMCID: PMC6497326 DOI: 10.1186/s13039-018-0391-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 07/19/2018] [Indexed: 11/10/2022] Open
Abstract
Background The clinical features of Down syndrome vary among individuals, with those most common being congenital heart disease, intellectual disability, developmental abnormity and dysmorphic features. Complex combination of Down syndrome phenotype could be produced by partially copy number variations (CNVs) on chromosome 21 as well. By comparing individual with partial CNVs of chromosome 21 with other patients of known CNVs and clinical phenotypes, we hope to provide a better understanding of the genotype-phenotype correlation of chromosome 21. Methods A total of 2768 pediatric patients sample collected at the Genetics Laboratory at Oklahoma University Health Science Center were screened using CGH Microarray for CNVs on chromosome 21. Results We report comprehensive clinical and molecular descriptions of six patients with microduplication and seven patients with microdeletion on the long arm of chromosome 21. Patients with microduplication have varied clinical features including developmental delay, microcephaly, facial dysmorphic features, pulmonary stenosis, autism, preauricular skin tag, eye pterygium, speech delay and pain insensitivity. We found that patients with microdeletion presented with developmental delay, microcephaly, intrauterine fetal demise, epilepsia partialis continua, congenital coronary anomaly and seizures. Conclusion Three patients from our study combine with four patients in public database suggests an association between 21q21.1 microduplication of CXADR gene and patients with developmental delay. One patient with 21q22.13 microdeletion of DYRK1A shows association with microcephaly and scoliosis. Our findings helped pinpoint critical genes in the genotype-phenotype association with a high resolution of 0.1 Mb and expanded the clinical features observed in patients with CNVs on the long arm of chromosome 21.
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Affiliation(s)
- Wenfu Li
- Genetics Laboratory, University of Oklahoma Health Sciences Center, 1122 NE 13th Street, Suite 1400, Oklahoma City, OK 73104 USA
| | - Xianfu Wang
- Genetics Laboratory, University of Oklahoma Health Sciences Center, 1122 NE 13th Street, Suite 1400, Oklahoma City, OK 73104 USA
| | - Shibo Li
- Genetics Laboratory, University of Oklahoma Health Sciences Center, 1122 NE 13th Street, Suite 1400, Oklahoma City, OK 73104 USA
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Rasmussen KK, Falkesgaard MH, Winther M, Roed NK, Quistgaard CL, Teisen MN, Edslev SM, Petersen DL, Aljubouri A, Christensen C, Thulstrup PW, Lo Leggio L, Teilum K, Walmod PS. NCAM2 Fibronectin type-III domains form a rigid structure that binds and activates the Fibroblast Growth Factor Receptor. Sci Rep 2018; 8:8957. [PMID: 29895898 PMCID: PMC5997747 DOI: 10.1038/s41598-018-27089-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 05/24/2018] [Indexed: 11/17/2022] Open
Abstract
NCAM1 and NCAM2 have ectodomains consisting of 5 Ig domains followed by 2 membrane-proximal FnIII domains. In this study we investigate and compare the structures and functions of these FnIII domains. The NCAM1 and -2 FnIII2 domains both contain a Walker A motif. In NCAM1 binding of ATP to this motif interferes with NCAM1 binding to FGFR. We obtained a structural model of the NCAM2 FnIII2 domain by NMR spectroscopy, and by titration with an ATP analogue we show that the NCAM2 Walker A motif does not bind ATP. Small angle X-ray scattering (SAXS) data revealed that the NCAM2 FnIII1-2 double domain exhibits a very low degree of flexibility. Moreover, recombinant NCAM2 FnIII domains bind FGFR in vitro, and the FnIII1-2 double domain induces neurite outgrowth in a concentration-dependent manner through activation of FGFR. Several synthetic NCAM1-derived peptides induce neurite outgrowth via FGFR. Only 2 of 5 peptides derived from similar regions in NCAM2 induce neurite outgrowth, but the most potent of these peptides stimulates neurite outgrowth through FGFR-dependent activation of the Ras-MAPK pathway. These results reveal that the NCAM2 FnIII domains form a rigid structure that binds and activates FGFR in a manner related to, but different from NCAM1.
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Affiliation(s)
- Kim Krighaar Rasmussen
- Biological Chemistry, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark.
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark.
- Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark.
| | - Maria Hansen Falkesgaard
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Malene Winther
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Nikolaj Kulahin Roed
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Christine Louise Quistgaard
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Marie Nygaard Teisen
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Sofie Marie Edslev
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - David Leander Petersen
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Ali Aljubouri
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Claus Christensen
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Peter Waaben Thulstrup
- Biological Chemistry, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Leila Lo Leggio
- Biological Chemistry, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Kaare Teilum
- Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Peter Schledermann Walmod
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
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Liu Y, Li Y, Ren Z, Si W, Li Y, Wei G, Zhao W, Zhou J, Tian Y, Chen D. MicroRNA-125a-3p is involved in early behavioral disorders in stroke-afflicted rats through the regulation of Cadm2. Int J Mol Med 2017; 40:1851-1859. [PMID: 29039453 PMCID: PMC5716446 DOI: 10.3892/ijmm.2017.3179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 10/06/2017] [Indexed: 12/25/2022] Open
Abstract
Ischemic strokes carry a significant risk of mortality and recurrent vascular events. Recent studies suggest that changes in microRNAs (miRNAs or miRs) may affect the development of the stroke. However, few studies have investigated the role of miRNAs in behavioral disorder in early stroke. In the present study, animal models of middle cerebral artery occlusion (MCAO) are used, as well as a cell model of neurite outgrowth to further investigate the role of miRNAs in targeting synapse-associated proteins expression in early stroke. The authors used miRNA expression microarrays on RNA extracted from the cortex tissue samples from the rats of MCAO and control rats. Reverse transcription-quantitative polymerase chain reaction was conducted to verify the candidate miRNAs discovered by microarray analysis. Data indicated that miR-125a was significantly increased in the cortex of the model of MCAO, which were concomitant with that rats of MCAO at the same age displayed significant behavioral deficits. Bioinformatics analysis predicted the cell adhesion molecule 2 (Cadm2, mRNA) neurite outgrowth-associated protein is targeted by miR-125a. Overexpression of miR-125a reduced the level of Cadm2 expression in PC12 cell injury induced by free-serum. In contrast, inhibition of miR-125a using miR-125a inhibitors significantly resulted in higher levels of Cadm2 expression. In conclusion, miR-125a is involved in the behavioral disorder of animal models of MCAO by regulation of Cadm2.
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Affiliation(s)
- Yuqing Liu
- Department of Anatomy, The Research Center of Integrative Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Yunjun Li
- Center of Sanxi Community Health Service, Shenzhen Dapeng District Maternal and Child Health Care Hospital, Shenzhen, Guangdong 518120, P.R. China
| | - Zhenxing Ren
- Department of Anatomy, The Research Center of Integrative Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Wenwen Si
- Department of Anatomy, The Research Center of Integrative Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Yiwei Li
- School of Nursing, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Gang Wei
- Research and Development of New Drugs, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Wenguang Zhao
- School of Medical Information Engineering, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Jianhong Zhou
- Department of Anatomy, The Research Center of Integrative Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Yage Tian
- Department of Anatomy, The Research Center of Integrative Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Dongfeng Chen
- Department of Anatomy, The Research Center of Integrative Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
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9
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Gong L, Zhou X, Yang J, Jiang Y, Yang H. Effects of the regulation of polysialyltransferase ST8SiaII on the invasiveness and metastasis of small cell lung cancer cells. Oncol Rep 2016; 37:131-138. [PMID: 28004110 DOI: 10.3892/or.2016.5279] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 06/30/2016] [Indexed: 11/05/2022] Open
Abstract
Invasiveness and metastasis may seriously affect the prognosis of small cell lung cancer (SCLC). In the present study, we analyzed the effects and inherent mechanisms of action of polysialic acid-modified neural cell adhesion molecule (NCAM) on the invasive and metastatic potential of SCLC. Gene transfection and short hairpin RNA (shRNA) interference were used to enhance or inhibit, respectively, the expression of polysialyltransferase ST8SiaII in the SCLC cell line H446. We studied in vitro positive or negative changes in the invasive and metastatic potential of the SCLC cells as well as the changes in expression of genes related to signaling molecules and metastasis. When ST8SiaII expression was enhanced, the in vitro transmembrane invasion (P<0.01) and migration (P<0.01) abilities of the SCLC cells markedly increased. Phosphorylation levels of fibroblast growth factor receptor 1 (FGFR1), extracellular signal-related kinase 1/2 (ERK1/2), and matrix metalloproteinase-9 (MMP-9) in the SCLC cells were also significantly increased. In contrast, when ST8SiaII expression was inhibited, the transmembrane invasion (P<0.01) and migration (P<0.01) of the SCLC cells as well as expression of the above signaling molecules were suppressed. Polysialic acid-modified NCAM on the surface of SCLC cells is closely related to the metastatic potential of these cells; regulation of ST8SiaII may thus affect the invasiveness and metastasis of SCLC, and these processes may be associated with phosphorylation of FGFR1, ERK1/2 or MMP-9.
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Affiliation(s)
- Liang Gong
- Department of Respiratory Diseases, Southwest Hospital of the Third Military Medical University, Shapingba, Chongqing 400038, P.R. China
| | - Xiangdong Zhou
- Department of Respiratory Diseases, Southwest Hospital of the Third Military Medical University, Shapingba, Chongqing 400038, P.R. China
| | - Jingxiang Yang
- Department of Respiratory Diseases, Southwest Hospital of the Third Military Medical University, Shapingba, Chongqing 400038, P.R. China
| | - Yongyuan Jiang
- Department of Respiratory Diseases, Southwest Hospital of the Third Military Medical University, Shapingba, Chongqing 400038, P.R. China
| | - Heping Yang
- Department of Respiratory Diseases, Southwest Hospital of the Third Military Medical University, Shapingba, Chongqing 400038, P.R. China
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10
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Comparative gene expression analysis of the human periodontal ligament in deciduous and permanent teeth. PLoS One 2013; 8:e61231. [PMID: 23593441 PMCID: PMC3620385 DOI: 10.1371/journal.pone.0061231] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 03/07/2013] [Indexed: 01/09/2023] Open
Abstract
There are histological and functional differences between human deciduous and permanent periodontal ligament (PDL) tissues. The aim of this study was to determine the differences between these two types of tissue at the molecular level by comparing their gene expression patterns. PDL samples were obtained from permanent premolars (n = 38) and anterior deciduous teeth (n = 31) extracted from 40 healthy persons. Comparative cDNA microarray analysis revealed several differences in gene expression between the deciduous and permanent PDL tissues. These findings were verified by qRT-PCR (quantitative reverse-transcription-polymerase chain reaction) analysis, and the areas where genes are expressed were revealed by immunohistochemical staining. The expressions of 21 genes were up-regulated in deciduous relative to PDL tissues, and those of 30 genes were up-regulated in permanent relative to deciduous PDL tissues. The genes that were up-regulated in deciduous PDL tissues were those involved in the formation of the extracellular matrix (LAMC2, LAMB3, and COMP), tissue development (IGF2BP, MAB21L2, and PAX3), and inflammatory or immune reactions leading to tissue degradation (IL1A, CCL21, and CCL18). The up-regulated genes in permanent PDL tissues were related to tissue degradation (IL6 and ADAMTS18), myocontraction (PDE3B, CASQ2, and MYH10), and neurological responses (FOS, NCAM2, SYT1, SLC22A3, DOCK3, LRRTM1, LRRTM3, PRSS12, and ARPP21). The analysis of differential gene expressions between deciduous and permanent PDL tissues aids our understanding of histological and functional differences between them at the molecular level.
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Chen CP, Lin YH, Chou SY, Su YN, Chern SR, Chen YT, Town DD, Chen WL, Wang W. Mosaic ring chromosome 21, monosomy 21, and isodicentric ring chromosome 21: prenatal diagnosis, molecular cytogenetic characterization, and association with 2-Mb deletion of 21q21.1-q21.2 and 5-Mb deletion of 21q22.3. Taiwan J Obstet Gynecol 2012; 51:71-6. [PMID: 22482972 DOI: 10.1016/j.tjog.2012.01.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2011] [Indexed: 01/02/2023] Open
Abstract
OBJECTIVE To present the perinatal findings and molecular cytogenetic characterization of prenatally detected mosaic r(21). MATERIALS, METHODS, AND RESULTS A 29-year-old primigravid woman underwent amniocentesis at 22 weeks' gestation because of hyperechogenic cardiac foci and intrauterine growth restriction. Amniocentesis revealed a karyotype of 46,XY,r(21)[15]/45,XY,-21[5]. The parental karyotypes were normal. The woman requested repeat amniocentesis. Oligonucleotide-based array comparative genomic hybridization was applied to the uncultured amniocytes, rapidly detecting a 2.09-Mb deletion of 21q21.1-q21.2 (21,495,262-23,580,815 bp) and a 5.03-Mb deletion of 21q22.3-q22.3 (41,887,412-46,914,715 bp). Cytogenetic analysis revealed a karyotype of 46,XY,r(21)[8]/45,XY,-21[3]/46,XY,idic r(21)[1]. The pregnancy was terminated, and a malformed fetus was delivered with clinodactyly, short big toes, separation between the first and second toes, prominent nasal bridge, downward slanting palpebral fissures, protuberant occiput, prominent forehead, broad anteverted nasal tip, long philtrum, thin upper lip, small mouth, and micrognathia. The placenta had a karyotype of 46,XY,r(21)[83]/45,XY,-21[11]/46,XY,idic r(21)[6], and the cord blood lymphocytes had a karyotype of 46,XY,r(21)[88]/45,XY,-21[9]/46,XY,idic r(21)[3]. Polymorphic DNA marker analysis determined a maternal origin for the deletion. CONCLUSION An extra interstitial 21q deletion can be associated with mosaic r(21) in addition to a terminal 21q deletion. aCGH is useful in determining the breakpoints and associated subtle structural abnormalities in cases of prenatally detected ring chromosome in order to facilitate genetic counseling.
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Affiliation(s)
- Chih-Ping Chen
- Department of Medicine, Mackay Medical College, New Taipei City, Taiwan.
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Yashin AI, Wu D, Arbeev KG, Ukraintseva SV. Polygenic effects of common single-nucleotide polymorphisms on life span: when association meets causality. Rejuvenation Res 2012; 15:381-94. [PMID: 22533364 DOI: 10.1089/rej.2011.1257] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Recently we have shown that the human life span is influenced jointly by many common single-nucleotide polymorphisms (SNPs), each with a small individual effect. Here we investigate further the polygenic influence on life span and discuss its possible biological mechanisms. First we identified six sets of prolongevity SNP alleles in the Framingham Heart Study 550K SNPs data, using six different statistical procedures (normal linear, Cox, and logistic regressions; generalized estimation equation; mixed model; gene frequency method). We then estimated joint effects of these SNPs on human survival. We found that alleles in each set show significant additive influence on life span. Twenty-seven SNPs comprised the overlapping set of SNPs that influenced life span, regardless of the statistical procedure. The majority of these SNPs (74%) were within genes, compared to 40% of SNPs in the original 550K set. We then performed a review of current literature on functions of genes closest to these 27 SNPs. The review showed that the respective genes are largely involved in aging, cancer, and brain disorders. We concluded that polygenic effects can explain a substantial portion of genetic influence on life span. Composition of the set of prolongevity alleles depends on the statistical procedure used for the allele selection. At the same time, there is a core set of longevity alleles that are selected with all statistical procedures. Functional relevance of respective genes to aging and major diseases supports causal relationships between the identified SNPs and life span. The fact that genes found in our and other genetic association studies of aging/longevity have similar functions indicates high chances of true positive associations for corresponding genetic variants.
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Affiliation(s)
- Anatoliy I Yashin
- Center for Population Health and Aging, Duke University, Durham, NC 27708-0408, USA.
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13
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Mao X, Schwend T, Conrad GW. Expression and localization of neural cell adhesion molecule and polysialic acid during chick corneal development. Invest Ophthalmol Vis Sci 2012; 53:1234-43. [PMID: 22281821 DOI: 10.1167/iovs.11-8834] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
PURPOSE To assay for expression and localization of neural cell adhesion molecule (NCAM) and polysialic acid (polySia) in the chick cornea during embryonic and postnatal development. METHODS Real time quantitative PCR and Western blot analyses were used to determine NCAM expression and polysiaylation in embryonic, hatchling, and adult chick corneas. Immunofluorescence staining for NCAM and polySia was conducted on cryosections of embryonic and adult corneas, whole embryonic corneas, and trigeminal neurons. RESULTS NCAM and ST8SiaII mRNA transcripts peaked by embryonic day (E)9, remained steady between E10 and E14 and slowly decreased thereafter during embryonic development. Both gene transcripts showed > 190-fold decline in the adult chick cornea compared with E9. In contrast, ST8SiaIV expression gradually decreased 26.5-fold from E6 to E19, increased thereafter, and rose to the early embryonic level in the adult cornea. Western blot analysis revealed NCAM was polysialylated and its expression developmentally changed. Other polysiaylated proteins aside from NCAM were also detected by Western blot analysis. Five NCAM isoforms including NCAM-120, NCAM-180 and three soluble NCAM isoforms with low molecular weights (87-96 kDa) were present in chick corneas, with NCAM-120 being the predominate isoform. NCAM was localized to the epithelium, stroma, and stromal extracellular matrix (ECM) of the embryonic cornea. In stroma, NCAM expression shifted from anterior to posterior stroma during embryonic development and eventually became undetectable in 20-week-old adult cornea. Additionally, both NCAM and polySia were detected on embryonic corneal and pericorneal nerves. CONCLUSIONS NCAM and polySia are expressed and developmentally regulated in chick corneas. Both membrane-associated and soluble NCAM isoforms are expressed in chick corneas. The distributions of NCAM and polySia in cornea and on corneal nerves suggest their potential functions in corneal innervation.
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Affiliation(s)
- Xiuli Mao
- Division of Biology, Kansas State University, Manhattan, Kansas 66506-4901, USA.
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14
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Langhauser M, Ustinova J, Rivera-Milla E, Ivannikov D, Seidl C, Slomka C, Finne J, Yoshihara Y, Bastmeyer M, Bentrop J. Ncam1a and Ncam1b: Two carriers of polysialic acid with different functions in the developing zebrafish nervous system. Glycobiology 2011; 22:196-209. [DOI: 10.1093/glycob/cwr129] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Kulahin N, Kristensen O, Rasmussen KK, Olsen L, Rydberg P, Vestergaard B, Kastrup JS, Berezin V, Bock E, Walmod PS, Gajhede M. Structural model and trans-interaction of the entire ectodomain of the olfactory cell adhesion molecule. Structure 2011; 19:203-11. [PMID: 21300289 DOI: 10.1016/j.str.2010.12.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 11/10/2010] [Accepted: 12/12/2010] [Indexed: 01/12/2023]
Abstract
The ectodomain of olfactory cell adhesion molecule (OCAM/NCAM2/RNCAM) consists of five immunoglobulin (Ig) domains (IgI-V), followed by two fibronectin-type 3 (Fn3) domains (Fn3I-II). A complete structural model of the entire ectodomain of human OCAM has been assembled from crystal structures of six recombinant proteins corresponding to different regions of the ectodomain. The model is the longest experimentally based composite structural model of an entire IgCAM ectodomain. It displays an essentially linear arrangement of IgI-V, followed by bends between IgV and Fn3I and between Fn3I and Fn3II. Proteins containing IgI-IgII domains formed stable homodimers in solution and in crystals. Dimerization could be disrupted in vitro by mutations in the dimer interface region. In conjunction with the bent ectodomain conformation, which can position IgI-V parallel with the cell surface, the IgI-IgII dimerization enables OCAM-mediated trans-interactions with an intercellular distance of about 20 nm, which is consistent with that observed in synapses.
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Affiliation(s)
- Nikolaj Kulahin
- Protein Laboratory, Department of Neuroscience and Pharmacology, Faculty of Health Sciences, University of Copenhagen, DK-2200 Copenhagen N, Denmark
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16
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Fleron M, Greffe Y, Musmeci D, Massart AC, Hennequiere V, Mazzucchelli G, Waltregny D, De Pauw-Gillet MC, Castronovo V, De Pauw E, Turtoi A. Novel post-digest isotope coded protein labeling method for phospho- and glycoproteome analysis. J Proteomics 2010; 73:1986-2005. [PMID: 20601274 DOI: 10.1016/j.jprot.2010.06.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 06/02/2010] [Accepted: 06/03/2010] [Indexed: 11/19/2022]
Abstract
In the field of proteomics there is an apparent lack of reliable methodology for quantification of posttranslational modifications. Present study offers a novel post-digest ICPL quantification strategy directed towards characterization of phosphorylated and glycosylated proteins. The value of the method is demonstrated based on the comparison of two prostate related metastatic cell lines originating from two distinct metastasis sites (PC3 and LNCaP). The method consists of protein digestion, ICPL labeling, mixing of the samples, PTM enrichment and MS-analysis. Phosphorylated peptides were isolated using TiO(2), whereas the enrichment of glycosylated peptides was performed using hydrazide based chemistry. Isolated PTM peptides were analyzed along with non enriched sample using 2D-(SCX-RP)-Nano-HPLC-MS/MS instrumentation. Taken together the novel ICPL labeling method offered a significant improvement of the number of identified (∼600 individual proteins) and quantified proteins (>95%) in comparison to the classical ICPL method. The results were validated using alternative protein quantification strategies as well as label-free MS quantification method. On the biological level, the comparison of PC3 and LNCaP cells has shown specific modulation of proteins implicated in the fundamental process related to metastasis dissemination. Finally, a preliminary study involving clinically relevant autopsy cases reiterated the potential biological value of the discovered proteins.
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Affiliation(s)
- M Fleron
- Histology-Cytology Laboratory, Department of Biomedical and Preclinical Sciences, University of Liege, B-4000 Liege, Belgium
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Haldeman-Englert CR, Chapman KA, Kruger H, Geiger EA, McDonald-McGinn DM, Rappaport E, Zackai EH, Spinner NB, Shaikh TH. A de novo 8.8-Mb deletion of 21q21.1-q21.3 in an autistic male with a complex rearrangement involving chromosomes 6, 10, and 21. Am J Med Genet A 2010; 152A:196-202. [PMID: 20034085 PMCID: PMC2801886 DOI: 10.1002/ajmg.a.33176] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We report here on a normal-appearing male with pervasive developmental disorder who was found to have a de novo, apparently balanced complex rearrangement involving chromosomes 6, 10, and 21: 46,XY,ins(21;10)(q11.2;p11.2p13)t(6;21)(p23;q11.2). Further analysis by high-density oligonucleotide microarray was performed, showing an 8.8-Mb heterozygous deletion at 21q21.1-q21.3. Interestingly, the deletion is distal to the translocation breakpoint on chromosome 21. The deletion involves 19 genes, including NCAM2 and GRIK1, both of which are associated with normal brain development and function, and have been considered as possible candidate genes in autism and other neurobehavioral disorders. This case underscores the utility of genomewide microarray analysis for the detection of copy number alterations in patients with apparently balanced complex rearrangements and abnormal phenotypes.
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Affiliation(s)
| | - Kimberly A. Chapman
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA
| | - Hillary Kruger
- Division of Child Development, Rehabilitation Medicine, and Metabolic Disease, The Children's Hospital of Philadelphia, Philadelphia, PA
| | - Elizabeth A. Geiger
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA
| | | | - Eric Rappaport
- Nucleic Acid and Protein Core, The Children's Hospital of Philadelphia, Philadelphia, PA
| | - Elaine H. Zackai
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, PA
| | - Nancy B. Spinner
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, PA
| | - Tamim H. Shaikh
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, PA
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