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Mouillet-Richard S, Gougelet A, Passet B, Brochard C, Le Corre D, Pitasi CL, Joubel C, Sroussi M, Gallois C, Lavergne J, Castille J, Vilotte M, Daniel-Carlier N, Pilati C, de Reyniès A, Djouadi F, Colnot S, André T, Taieb J, Vilotte JL, Romagnolo B, Laurent-Puig P. Wnt, glucocorticoid and cellular prion protein cooperate to drive a mesenchymal phenotype with poor prognosis in colon cancer. J Transl Med 2024; 22:337. [PMID: 38589873 PMCID: PMC11003154 DOI: 10.1186/s12967-024-05164-0] [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: 02/12/2024] [Accepted: 04/04/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND The mesenchymal subtype of colorectal cancer (CRC), associated with poor prognosis, is characterized by abundant expression of the cellular prion protein PrPC, which represents a candidate therapeutic target. How PrPC is induced in CRC remains elusive. This study aims to elucidate the signaling pathways governing PrPC expression and to shed light on the gene regulatory networks linked to PrPC. METHODS We performed in silico analyses on diverse datasets of in vitro, ex vivo and in vivo models of mouse CRC and patient cohorts. We mined ChIPseq studies and performed promoter analysis. CRC cell lines were manipulated through genetic and pharmacological approaches. We created mice combining conditional inactivation of Apc in intestinal epithelial cells and overexpression of the human prion protein gene PRNP. Bio-informatic analyses were carried out in two randomized control trials totalizing over 3000 CRC patients. RESULTS In silico analyses combined with cell-based assays identified the Wnt-β-catenin and glucocorticoid pathways as upstream regulators of PRNP expression, with subtle differences between mouse and human. We uncover multiple feedback loops between PrPC and these two pathways, which translate into an aggravation of CRC pathogenesis in mouse. In stage III CRC patients, the signature defined by PRNP-CTNNB1-NR3C1, encoding PrPC, β-catenin and the glucocorticoid receptor respectively, is overrepresented in the poor-prognosis, mesenchymal subtype and associates with reduced time to recurrence. CONCLUSIONS An unleashed PrPC-dependent vicious circle is pathognomonic of poor prognosis, mesenchymal CRC. Patients from this aggressive subtype of CRC may benefit from therapies targeting the PRNP-CTNNB1-NR3C1 axis.
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Affiliation(s)
- Sophie Mouillet-Richard
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France.
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France.
| | - Angélique Gougelet
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
| | - Bruno Passet
- University of Paris-Saclay, INRAE, AgroParisTech, UMR1313 GABI, 78350, Jouy-en-Josas, France
| | - Camille Brochard
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Institut du Cancer Paris CARPEM, APHP, Department of Pathology, APHP.Centre-Université Paris Cité, Hôpital Européen G. Pompidou, Paris, France
| | - Delphine Le Corre
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Caterina Luana Pitasi
- Université Paris Cité, Institut Cochin, Inserm, CNRS, F-75014, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Camille Joubel
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Marine Sroussi
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Claire Gallois
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
- Institut du Cancer Paris CARPEM, APHP, Hepatogastroenterology and GI Oncology Department, APHP.Centre-Université Paris Cité, Hôpital Européen G. Pompidou, Paris, France
| | - Julien Lavergne
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Histology, Imaging and Cytometry Center (CHIC), Paris, France
| | - Johan Castille
- University of Paris-Saclay, INRAE, AgroParisTech, UMR1313 GABI, 78350, Jouy-en-Josas, France
| | - Marthe Vilotte
- University of Paris-Saclay, INRAE, AgroParisTech, UMR1313 GABI, 78350, Jouy-en-Josas, France
| | - Nathalie Daniel-Carlier
- University of Paris-Saclay, INRAE, AgroParisTech, UMR1313 GABI, 78350, Jouy-en-Josas, France
| | - Camilla Pilati
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Aurélien de Reyniès
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Fatima Djouadi
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Sabine Colnot
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Thierry André
- Saint-Antoine Hospital, INSERM, Unité Mixte de Recherche Scientifique 938, Sorbonne Université, Paris, France
| | - Julien Taieb
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
- Institut du Cancer Paris CARPEM, APHP, Hepatogastroenterology and GI Oncology Department, APHP.Centre-Université Paris Cité, Hôpital Européen G. Pompidou, Paris, France
| | - Jean-Luc Vilotte
- University of Paris-Saclay, INRAE, AgroParisTech, UMR1313 GABI, 78350, Jouy-en-Josas, France
| | - Béatrice Romagnolo
- Université Paris Cité, Institut Cochin, Inserm, CNRS, F-75014, Paris, France
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France
| | - Pierre Laurent-Puig
- Centre de Recherche Des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, 75006, Paris, France.
- Equipe Labellisée Ligue Nationale Contre Le Cancer, Paris, France.
- Institut du Cancer Paris CARPEM, APHP, Department of Biology, APHP.Centre-Université Paris Cité, Hôpital Européen G. Pompidou, Paris, France.
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de la Nava D, Ausejo-Mauleon I, Laspidea V, Gonzalez-Huarriz M, Lacalle A, Casares N, Zalacain M, Marrodan L, García-Moure M, Ochoa MC, Tallon-Cobos AC, Hernandez-Osuna R, Marco-Sanz J, Dhandapani L, Hervás-Corpión I, Becher OJ, Nazarian J, Mueller S, Phoenix TN, van der Lugt J, Hernaez M, Guruceaga E, Koschmann C, Venneti S, Allen JE, Dun MD, Fueyo J, Gomez-Manzano C, Gállego Pérez-Larraya J, Patiño-García A, Labiano S, Alonso MM. The oncolytic adenovirus Delta-24-RGD in combination with ONC201 induces a potent antitumor response in pediatric high-grade and diffuse midline glioma models. Neuro Oncol 2024:noae066. [PMID: 38554031 DOI: 10.1093/neuonc/noae066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND Pediatric high-grade gliomas (pHGGs), including diffuse midline gliomas (DMGs), are aggressive pediatric tumors with one of the poorest prognoses. Delta-24-RGD and ONC201 have shown promising efficacy as single agents for these tumors. However, the combination of both agents has not been evaluated. METHODS The production of functional viruses was assessed by immunoblotting and replication assays. The antitumor effect was evaluated in a panel of human and murine pHGG and DMG cell lines. RNAseq, the seahorse stress test, mitochondrial DNA content, and γH2A.X immunofluorescence were used to perform mechanistic studies. Mouse models of both diseases were used to assess the efficacy of the combination in vivo. The tumor immune microenvironment was evaluated using flow cytometry, RNAseq and multiplexed immunofluorescence staining. RESULTS The Delta-24-RGD/ONC201 combination did not affect the virus replication capability in human pHGG and DMG models in vitro. Cytotoxicity analysis showed that the combination treatment was either synergistic or additive. Mechanistically, the combination treatment increased nuclear DNA damage and maintained the metabolic perturbation and mitochondrial damage caused by each agent alone. Delta-24-RGD/ONC201 cotreatment extended the overall survival of mice implanted with human and murine pHGG and DMG cells, independent of H3 mutation status and location. Finally, combination treatment in murine DMG models revealed a reshaping of the tumor microenvironment to a proinflammatory phenotype. CONCLUSIONS The Delta-24-RGD/ONC201 combination improved the efficacy compared to each agent alone in in vitro and in vivo models by potentiating nuclear DNA damage and in turn improving the antitumor (immune) response to each agent alone.
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Affiliation(s)
- Daniel de la Nava
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Iker Ausejo-Mauleon
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Virginia Laspidea
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Marisol Gonzalez-Huarriz
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Andrea Lacalle
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Noelia Casares
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Marta Zalacain
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Lucía Marrodan
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Marc García-Moure
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Maria C Ochoa
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Antonio Carlos Tallon-Cobos
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
| | - Reyes Hernandez-Osuna
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Javier Marco-Sanz
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Laasya Dhandapani
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Irati Hervás-Corpión
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Oren J Becher
- Jack Martin Fund Division of Pediatric Hematology-oncology, Mount Sinai, New York, NY, USA
| | - Javad Nazarian
- Children's National Health System, Center for Genetic Medicine Research, Washington, DC, USA
- Virginia Tech University, Washington, DC, USA
- Division of Oncology and Children's Research Center, DIPG/DMG Research Center Zurich, University Children's Hospital Zurich, Zurich, Switzerland
| | - Sabine Mueller
- Division of Oncology and Children's Research Center, DIPG/DMG Research Center Zurich, University Children's Hospital Zurich, Zurich, Switzerland
- University of California, San Francisco; San Francisco, CA, 94143, USA
| | - Timothy N Phoenix
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH, USA
| | | | - Mikel Hernaez
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Bioinformatics Platform, Center for Applied Medical Research, University of Navarra (CIMA), Pamplona, Spain
| | - Elizabeth Guruceaga
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Bioinformatics Platform, Center for Applied Medical Research, University of Navarra (CIMA), Pamplona, Spain
| | - Carl Koschmann
- Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA
| | - Sriram Venneti
- Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA
| | | | - Matthew D Dun
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
- Paediatric Stream, Mark Hughes Foundation Centre for Brain Cancer Research, College of Health, Medicine, and Wellbeing, Callaghan, New South Wales, Australia
| | - Juan Fueyo
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Candelaria Gomez-Manzano
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jaime Gállego Pérez-Larraya
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Neurology, Clínica Universidad de Navarra, Pamplona, Spain
| | - Ana Patiño-García
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Sara Labiano
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Marta M Alonso
- Health Research Institute of Navarra (IdiSNA), Pamplona, Navarra, Spain
- Solid Tumor Program, Center for the Applied Medical Research, Pamplona, Navarra, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
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Tian J, Jiang L, Li H, Dan J, Luo Y. The dual role of the DREAM/G2M pathway in non-tumorigenic immortalization of senescent cells. FEBS Open Bio 2024; 14:331-343. [PMID: 38073074 PMCID: PMC10839291 DOI: 10.1002/2211-5463.13748] [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] [Revised: 10/04/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023] Open
Abstract
Anti-aging and tumorigenesis share common genes and pathways, and thus targeting these genes as part of anti-aging interventions carries the risk of tumorigenesis. It is essential to understand the gene signatures that balance tumorigenesis and aging. To achieve this goal, we analyzed RNA-sequencing data from three non-tumorigenic immortalized cell lines that spontaneously escaped from senescence. By single sample gene set enrichment assay (ssGSEA) and GSEA analysis, we found that both cell growth signaling (E2F targets, MYC targets) and tumor surveillance mechanisms (DNA repair, G2M checkpoint, mitotic spindle) were up-regulated in all three cell lines, suggesting that these genes are potential signatures for non-tumorigenic immortalization. Further analysis revealed that the 182 commonly up-regulated genes in these three cell lines overlapped with the DREAM/G2M pathway, which is known to be the upstream regulator of E2F, Myc targets, DNA repair, G2M checkpoint and mitotic spindle pathways in its cell cycle activation or inhibitory form. By western blotting, quantitative PCR and co-immunoprecipitation, we verified that both forms of the DREAM pathway are up-regulated in all three cell lines; this pathway facilitates control of cell cycle progression, supporting a new mechanism for non-tumorigenic immortalization. Thus, we propose that the DREAM/G2M pathway plays important dual roles with respect to preventing tumorigenesis in the process of immortalization. Our data might serve as the basis for the identification of new signature pathways or gene biomarkers for non-tumorigenic immortalization, and may aid in the discovery of new targets for tumor-free anti-aging drug screening.
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Affiliation(s)
- Jie Tian
- Department of Pathophysiology, School of Basic MedicineGuizhou Medical UniversityGuiyangChina
| | - Liangxia Jiang
- Department of Pathophysiology, School of Basic MedicineGuizhou Medical UniversityGuiyangChina
| | - Haili Li
- School of Basic MedicineShandong First Medical University & Shandong Academy of Medical SciencesJinanChina
| | - Juhua Dan
- Laboratory of Molecular Genetics of Aging & Tumor, Medical SchoolKunming University of Science and TechnologyChina
| | - Ying Luo
- Department of Pathophysiology, School of Basic MedicineGuizhou Medical UniversityGuiyangChina
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Nmezi B, Bey GR, Oranburg TD, Dudnyk K, Lardo SM, Herdman N, Jacko A, Rubio S, Alcocer EL, Kofler J, Kim D, Rankin J, Kivuva E, Gutowski N, Schon K, van den Ameele J, Chinnery PF, Sousa SB, Palavra F, Toro C, Pinto E Vairo F, Saute J, Pan L, Alturkustani M, Hammond R, Gros-Louis F, Gold M, Park Y, Bernard G, Raininko R, Zhou J, Hainer SJ, Padiath QS. An oligodendrocyte silencer element underlies the pathogenic impact of lamin B1 structural variants. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.03.551473. [PMID: 37609196 PMCID: PMC10441294 DOI: 10.1101/2023.08.03.551473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
The role of non-coding regulatory elements and how they might contribute to tissue type specificity of disease phenotypes is poorly understood. Autosomal Dominant Leukodystrophy (ADLD) is a fatal, adult-onset, neurological disorder that is characterized by extensive CNS demyelination. Most cases of ADLD are caused by tandem genomic duplications involving the lamin B1 gene ( LMNB1 ) while a small subset are caused by genomic deletions upstream of the gene. Utilizing data from recently identified families that carry LMNB1 gene duplications but do not exhibit demyelination, ADLD patient tissues, CRISPR modified cell lines and mouse models, we have identified a novel silencer element that is lost in ADLD patients and that specifically targets overexpression to oligodendrocytes. This element consists of CTCF binding sites that mediate three-dimensional chromatin looping involving the LMNB1 and the recruitment of the PRC2 repressor complex. Loss of the silencer element in ADLD identifies a previously unknown role for silencer elements in tissue specificity and disease causation.
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Abstract
Phosphatases and kinases maintain an equilibrium of dephosphorylated and phosphorylated proteins, respectively, that are required for critical cellular functions. Imbalance in this equilibrium or irregularity in their function causes unfavorable cellular effects that have been implicated in the development of numerous diseases. Protein tyrosine phosphatases (PTPs) catalyze the dephosphorylation of protein substrates on tyrosine residues, and their involvement in cell signaling and diseases such as cancer and inflammatory and metabolic diseases has made them attractive therapeutic targets. However, PTPs have proved challenging in therapeutics development, garnering them the unfavorable reputation of being undruggable. Nonetheless, great strides have been made toward the inhibition of PTPs over the past decade. Here, we discuss the advancement in small-molecule inhibition for the PTP subfamily known as the mitogen-activated protein kinase (MAPK) phosphatases (MKPs). We review strategies and inhibitor discovery tools that have proven successful for small-molecule inhibition of the MKPs and discuss what the future of MKP inhibition potentially might yield.
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Affiliation(s)
- Shanelle R Shillingford
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, USA;
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Anton M Bennett
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, USA;
- Yale Center for Molecular and Systems Metabolism, Yale University School of Medicine, New Haven, Connecticut, USA
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Schang AL, Van Steenwinckel J, Ioannidou ZS, Lipecki J, Rich-Griffin C, Woolley-Allen K, Dyer N, Le Charpentier T, Schäfer P, Fleiss B, Ott S, Sabéran-Djoneidi D, Mezger V, Gressens P. Epigenetic priming of immune/inflammatory pathways activation and abnormal activity of cell cycle pathway in a perinatal model of white matter injury. Cell Death Dis 2022; 13:1038. [PMID: 36513635 PMCID: PMC9748018 DOI: 10.1038/s41419-022-05483-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 11/10/2022] [Accepted: 11/29/2022] [Indexed: 12/15/2022]
Abstract
Prenatal inflammatory insults accompany prematurity and provoke diffuse white matter injury (DWMI), which is associated with increased risk of neurodevelopmental pathologies, including autism spectrum disorders. DWMI results from maturation arrest of oligodendrocyte precursor cells (OPCs), a process that is poorly understood. Here, by using a validated mouse model of OPC maturation blockade, we provide the genome-wide ID card of the effects of neuroinflammation on OPCs that reveals the architecture of global cell fate issues underlining their maturation blockade. First, we find that, in OPCs, neuroinflammation takes advantage of a primed epigenomic landscape and induces abnormal overexpression of genes of the immune/inflammatory pathways: these genes strikingly exhibit accessible chromatin conformation in uninflamed OPCs, which correlates with their developmental, stage-dependent expression, along their normal maturation trajectory, as well as their abnormal upregulation upon neuroinflammation. Consistently, we observe the positioning on DNA of key transcription factors of the immune/inflammatory pathways (IRFs, NFkB), in both unstressed and inflamed OPCs. Second, we show that, in addition to the general perturbation of the myelination program, neuroinflammation counteracts the physiological downregulation of the cell cycle pathway in maturing OPCs. Neuroinflammation therefore perturbs cell identity in maturing OPCs, in a global manner. Moreover, based on our unraveling of the activity of genes of the immune/inflammatory pathways in prenatal uninflamed OPCs, the mere suppression of these proinflammatory mediators, as currently proposed in the field, may not be considered as a valid neurotherapeutic strategy.
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Affiliation(s)
- Anne-Laure Schang
- grid.464155.7Université Paris Cité, Epigenetics and Cell Fate, CNRS, F-75013 Paris, France ,grid.513208.dUniversité Paris Cité, NeuroDiderot, Inserm, F-75019 Paris, France ,grid.7429.80000000121866389Present Address: Inserm, UMR1153, Epidemiology and Biostatistics Sorbonne Paris Cité Center (CRESS) HERA team. Université Paris Cité, Faculté de Santé, Faculté de Pharmacie de Paris, 4 avenue de l’Observatoire, 75006 Paris, France
| | | | - Zoi S. Ioannidou
- grid.7372.10000 0000 8809 1613School of Life Sciences, University of Warwick, Coventry, CV4 7AL UK
| | - Julia Lipecki
- grid.7372.10000 0000 8809 1613School of Life Sciences, University of Warwick, Coventry, CV4 7AL UK
| | - Charlotte Rich-Griffin
- grid.7372.10000 0000 8809 1613School of Life Sciences, University of Warwick, Coventry, CV4 7AL UK
| | - Kate Woolley-Allen
- grid.7372.10000 0000 8809 1613School of Life Sciences, University of Warwick, Coventry, CV4 7AL UK
| | - Nigel Dyer
- grid.7372.10000 0000 8809 1613Bioinformatics Research Technology Platform, Warwick University, Coventry, CV4 7AL UK
| | | | - Patrick Schäfer
- grid.7372.10000 0000 8809 1613School of Life Sciences, University of Warwick, Coventry, CV4 7AL UK
| | - Bobbi Fleiss
- grid.513208.dUniversité Paris Cité, NeuroDiderot, Inserm, F-75019 Paris, France ,grid.1017.70000 0001 2163 3550Present Address: School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC Australia
| | - Sascha Ott
- grid.7372.10000 0000 8809 1613Warwick Medical School, University of Warwick, Coventry, CV4 7AL UK
| | | | - Valérie Mezger
- grid.464155.7Université Paris Cité, Epigenetics and Cell Fate, CNRS, F-75013 Paris, France
| | - Pierre Gressens
- grid.513208.dUniversité Paris Cité, NeuroDiderot, Inserm, F-75019 Paris, France ,grid.7372.10000 0000 8809 1613School of Life Sciences, University of Warwick, Coventry, CV4 7AL UK
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7
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Tomas-Roig J, Ramasamy S, Zbarsky D, Havemann-Reinecke U, Hoyer-Fender S. Psychosocial stress and cannabinoid drugs affect acetylation of α-tubulin (K40) and gene expression in the prefrontal cortex of adult mice. PLoS One 2022; 17:e0274352. [PMID: 36129937 PMCID: PMC9491557 DOI: 10.1371/journal.pone.0274352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 08/25/2022] [Indexed: 12/02/2022] Open
Abstract
The dynamics of neuronal microtubules are essential for brain plasticity. Vesicular transport and synaptic transmission, additionally, requires acetylation of α-tubulin, and aberrant tubulin acetylation and neurobiological deficits are associated. Prolonged exposure to a stressor or consumption of drugs of abuse, like marihuana, lead to neurological changes and psychotic disorders. Here, we studied the effect of psychosocial stress and the administration of cannabinoid receptor type 1 drugs on α-tubulin acetylation in different brain regions of mice. We found significantly decreased tubulin acetylation in the prefrontal cortex in stressed mice. The impact of cannabinoid drugs on stress-induced microtubule disturbance was investigated by administration of the cannabinoid receptor agonist WIN55,212–2 and/or antagonist rimonabant. In both, control and stressed mice, the administration of WIN55,212–2 slightly increased the tubulin acetylation in the prefrontal cortex whereas administration of rimonabant acted antagonistically indicating a cannabinoid receptor type 1 mediated effect. The analysis of gene expression in the prefrontal cortex showed a consistent expression of ApoE attributable to either psychosocial stress or administration of the cannabinoid agonist. Additionally, ApoE expression inversely correlated with acetylated tubulin levels when comparing controls and stressed mice treated with WIN55,212–2 whereas rimonabant treatment showed the opposite.
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Affiliation(s)
- Jordi Tomas-Roig
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
- Center Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), University of Göttingen, Göttingen, Germany
- Johann-Friedrich-Blumenbach-Institute of Zoology and Anthropology–Developmental Biology, GZMB, Georg-August-University Göttingen, Göttingen, Germany
- * E-mail: (JTR); (SHF)
| | - Shyam Ramasamy
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
- Johann-Friedrich-Blumenbach-Institute of Zoology and Anthropology–Developmental Biology, GZMB, Georg-August-University Göttingen, Göttingen, Germany
| | - Diana Zbarsky
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
- Johann-Friedrich-Blumenbach-Institute of Zoology and Anthropology–Developmental Biology, GZMB, Georg-August-University Göttingen, Göttingen, Germany
| | - Ursula Havemann-Reinecke
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
- Center Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), University of Göttingen, Göttingen, Germany
| | - Sigrid Hoyer-Fender
- Johann-Friedrich-Blumenbach-Institute of Zoology and Anthropology–Developmental Biology, GZMB, Georg-August-University Göttingen, Göttingen, Germany
- * E-mail: (JTR); (SHF)
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8
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Naffaa V, Hochar I, Lama C, Magny R, Regazzetti A, Gressens P, Laprévote O, Auzeil N, Schang AL. Bisphenol A Impairs Lipid Remodeling Accompanying Cell Differentiation in the Oligodendroglial Cell Line Oli-Neu. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072274. [PMID: 35408676 PMCID: PMC9000593 DOI: 10.3390/molecules27072274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/11/2022] [Accepted: 03/25/2022] [Indexed: 12/04/2022]
Abstract
In the central nervous system, the process of myelination involves oligodendrocytes that wrap myelin around axons. Myelin sheaths are mainly composed of lipids and ensure efficient conduction of action potentials. Oligodendrocyte differentiation is an essential preliminary step to myelination which, in turn, is a key event of neurodevelopment. Bisphenol A (BPA), a ubiquitous endocrine disruptor, is suspected to disrupt this developmental process and may, thus, contribute to several neurodevelopmental disorders. In this study, we assessed the effect of BPA on oligodendrocyte differentiation through a comprehensive analysis of cell lipidome by UHPLC-HRMS. For this purpose, we exposed the oligodendroglial cell line Oli-neu to several BPA concentrations for 72 h of proliferation and another 72 h of differentiation. In unexposed cells, significant changes occurred in lipid distribution during Oli-neu differentiation, including an increase in characteristic myelin lipids, sulfatides, and ethanolamine plasmalogens, and a marked remodeling of phospholipid subclasses and fatty acid contents. Moreover, BPA induced a decrease in sulfatide and phosphatidylinositol plasmalogen contents and modified monounsaturated/polyunsaturated fatty acid relative contents in phospholipids. These effects counteracted the lipid remodeling accompanying differentiation and were confirmed by gene expression changes. Altogether, our results suggest that BPA disrupts lipid remodeling accompanying early oligodendrocyte differentiation.
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Affiliation(s)
- Vanessa Naffaa
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Isabelle Hochar
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Chéryane Lama
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Romain Magny
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
- INSERM UMR 968, CNRS UMR 7210, Institut de la Vision, IHU ForeSight, Sorbonne Université UM80, 75012 Paris, France
| | - Anne Regazzetti
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Pierre Gressens
- NeuroDiderot, Inserm, Université Paris Cité, 75019 Paris, France;
| | - Olivier Laprévote
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
- Hôpital Européen Georges Pompidou, AP-HP, Service de Biochimie, 75015 Paris, France
| | - Nicolas Auzeil
- CiTCoM, CNRS, Université Paris Cité, 75006 Paris, France; (V.N.); (I.H.); (C.L.); (R.M.); (A.R.); (O.L.); (N.A.)
| | - Anne-Laure Schang
- UMR 1153 CRESS, Université Paris Cité, 75004 Paris, France
- Correspondence:
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9
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Zhang Y, Yang B, Davis JM, Drake MM, Younes M, Shen Q, Zhao Z, Cao Y, Ko TC. Distinct Murine Pancreatic Transcriptomic Signatures during Chronic Pancreatitis Recovery. Mediators Inflamm 2021; 2021:5595464. [PMID: 34104113 PMCID: PMC8158417 DOI: 10.1155/2021/5595464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/15/2021] [Accepted: 04/25/2021] [Indexed: 11/17/2022] Open
Abstract
We have previously demonstrated that the pancreas can recover from chronic pancreatitis (CP) lesions in the cerulein-induced mouse model. To explore how pancreatic recovery is achieved at the molecular level, we used RNA-sequencing (seq) and profiled transcriptomes during CP transition to recovery. CP was induced by intraperitoneally injecting cerulein in C57BL/6 mice. Time-matched controls (CON) were given normal saline. Pancreata were harvested from mice 4 days after the final injections (designated as CP and CON) or 4 weeks after the final injections (designated as CP recovery (CPR) and control recovery (CONR)). Pancreatic RNAs were extracted for RNA-seq and quantitative (q) PCR validation. Using RNA-seq, we identified a total of 3,600 differentially expressed genes (DEGs) in CP versus CON and 166 DEGs in CPR versus CONR. There are 132 DEGs overlapped between CP and CPR and 34 DEGs unique to CPR. A number of selected pancreatic fibrosis-relevant DEGs were validated by qPCR. The top 20 gene sets enriched from DEGs shared between CP and CPR are relevant to extracellular matrix and cancer biology, whereas the top 10 gene sets enriched from DEGs specific to CPR are pertinent to DNA methylation and specific signaling pathways. In conclusion, we identified a distinct set of DEGs in association with extracellular matrix and cancer cell activities to contrast CP and CPR. Once during ongoing CP recovery, DEGs relevant to DNA methylation and specific signaling pathways were induced to express. The DEGs shared between CP and CPR and the DEGs specific to CPR may serve as the unique transcriptomic signatures and biomarkers for determining CP recovery and monitoring potential therapeutic responses at the molecular level to reflect pancreatic histological resolution.
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Affiliation(s)
- Yinjie Zhang
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Baibing Yang
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Joy M. Davis
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Madeline M. Drake
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Mamoun Younes
- Department of Pathology & Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Pathology, George Washington University School of Medicine and Health Sciences, Washington, DC 20037, USA
| | - Qiang Shen
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
| | - Zhongming Zhao
- Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Human Genetics Center, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Yanna Cao
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Tien C. Ko
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
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10
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Balestri S, Del Giovane A, Sposato C, Ferrarelli M, Ragnini-Wilson A. The Current Challenges for Drug Discovery in CNS Remyelination. Int J Mol Sci 2021; 22:ijms22062891. [PMID: 33809224 PMCID: PMC8001072 DOI: 10.3390/ijms22062891] [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: 02/04/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 12/12/2022] Open
Abstract
The myelin sheath wraps around axons, allowing saltatory currents to be transmitted along neurons. Several genetic, viral, or environmental factors can damage the central nervous system (CNS) myelin sheath during life. Unless the myelin sheath is repaired, these insults will lead to neurodegeneration. Remyelination occurs spontaneously upon myelin injury in healthy individuals but can fail in several demyelination pathologies or as a consequence of aging. Thus, pharmacological intervention that promotes CNS remyelination could have a major impact on patient’s lives by delaying or even preventing neurodegeneration. Drugs promoting CNS remyelination in animal models have been identified recently, mostly as a result of repurposing phenotypical screening campaigns that used novel oligodendrocyte cellular models. Although none of these have as yet arrived in the clinic, promising candidates are on the way. Many questions remain. Among the most relevant is the question if there is a time window when remyelination drugs should be administrated and why adult remyelination fails in many neurodegenerative pathologies. Moreover, a significant challenge in the field is how to reconstitute the oligodendrocyte/axon interaction environment representative of healthy as well as disease microenvironments in drug screening campaigns, so that drugs can be screened in the most appropriate disease-relevant conditions. Here we will provide an overview of how the field of in vitro models developed over recent years and recent biological findings about how oligodendrocytes mature after reactivation of their staminal niche. These data have posed novel questions and opened new views about how the adult brain is repaired after myelin injury and we will discuss how these new findings might change future drug screening campaigns for CNS regenerative drugs.
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11
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Phosphorylation Dynamics of JNK Signaling: Effects of Dual-Specificity Phosphatases (DUSPs) on the JNK Pathway. Int J Mol Sci 2019; 20:ijms20246157. [PMID: 31817617 PMCID: PMC6941053 DOI: 10.3390/ijms20246157] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/30/2019] [Accepted: 12/04/2019] [Indexed: 02/06/2023] Open
Abstract
Protein phosphorylation affects conformational change, interaction, catalytic activity, and subcellular localization of proteins. Because the post-modification of proteins regulates diverse cellular signaling pathways, the precise control of phosphorylation states is essential for maintaining cellular homeostasis. Kinases function as phosphorylating enzymes, and phosphatases dephosphorylate their target substrates, typically in a much shorter time. The c-Jun N-terminal kinase (JNK) signaling pathway, a mitogen-activated protein kinase pathway, is regulated by a cascade of kinases and in turn regulates other physiological processes, such as cell differentiation, apoptosis, neuronal functions, and embryonic development. However, the activation of the JNK pathway is also implicated in human pathologies such as cancer, neurodegenerative diseases, and inflammatory diseases. Therefore, the proper balance between activation and inactivation of the JNK pathway needs to be tightly regulated. Dual specificity phosphatases (DUSPs) regulate the magnitude and duration of signal transduction of the JNK pathway by dephosphorylating their substrates. In this review, we will discuss the dynamics of phosphorylation/dephosphorylation, the mechanism of JNK pathway regulation by DUSPs, and the new possibilities of targeting DUSPs in JNK-related diseases elucidated in recent studies.
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12
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Sato T, Yoo S, Kong R, Sinha A, Chandramani-Shivalingappa P, Patel A, Fridrikh M, Nagano O, Masuko T, Beasley MB, Powell CA, Zhu J, Watanabe H. Epigenomic Profiling Discovers Trans-lineage SOX2 Partnerships Driving Tumor Heterogeneity in Lung Squamous Cell Carcinoma. Cancer Res 2019; 79:6084-6100. [PMID: 31551362 DOI: 10.1158/0008-5472.can-19-2132] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/06/2019] [Accepted: 09/20/2019] [Indexed: 12/26/2022]
Abstract
Molecular characterization of lung squamous cell carcinoma (LUSC), one of the major subtypes of lung cancer, has not sufficiently improved its nonstratified treatment strategies over decades. Accumulating evidence suggests that lineage-specific transcriptional regulators control differentiation states during cancer evolution and underlie their distinct biological behaviors. In this study, by investigating the super-enhancer landscape of LUSC, we identified a previously undescribed "neural" subtype defined by Sox2 and a neural lineage factor Brn2, as well as the classical LUSC subtype defined by Sox2 and its classical squamous partner p63. Robust protein-protein interaction and genomic cooccupancy of Sox2 and Brn2, in place for p63 in the classical LUSC, indicated their transcriptional cooperation imparting this unique lineage state in the "neural" LUSC. Forced expression of p63 downregulated Brn2 in the "neural" LUSC cells and invoked the classical LUSC lineage with more squamous/epithelial features, which were accompanied by increased activities of ErbB/Akt and MAPK-ERK pathways, suggesting differential dependency. Collectively, our data demonstrate heterogeneous cell lineage states of LUSC featured by Sox2 cooperation with Brn2 or p63, for which distinct therapeutic approaches may be warranted. SIGNIFICANCE: Epigenomic profiling reveals a novel subtype of lung squamous cell carcinoma with neural differentiation.Graphical Abstract: http://cancerres.aacrjournals.org/content/canres/79/24/6084/F1.large.jpg.
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Affiliation(s)
- Takashi Sato
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.,Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Seungyeul Yoo
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Ranran Kong
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.,Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York.,Department of Thoracic Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Abhilasha Sinha
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.,Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Prashanth Chandramani-Shivalingappa
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Ayushi Patel
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.,Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Maya Fridrikh
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.,Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Osamu Nagano
- Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Takashi Masuko
- Cell Biology Laboratory, School of Pharmacy, Kindai University, Higashiosaka, Osaka, Japan
| | - Mary Beth Beasley
- Department of Pathology and Laboratory Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Charles A Powell
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Jun Zhu
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York.,Sema4, a Mount Sinai venture, Stamford, Connecticut
| | - Hideo Watanabe
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York. .,Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York
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13
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Herrero M, Mandelboum S, Elroy-Stein O. eIF2B Mutations Cause Mitochondrial Malfunction in Oligodendrocytes. Neuromolecular Med 2019; 21:303-313. [PMID: 31134486 DOI: 10.1007/s12017-019-08551-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 05/20/2019] [Indexed: 01/02/2023]
Abstract
Vanishing white matter (VWM) disease (OMIM#306896) is an autosomal recessive neurodegenerative leukodystrophy caused by hypomorphic mutations in any of the five genes encoding the subunits of eukaryotic translation initiation factor 2B (eIF2B). The disease is manifested by loss of cerebral white matter and progressive deterioration upon exposure to environmental and physiological stressors. "Foamy" oligodendrocytes (OLG), increased numbers of oligodendrocytes precursor cells (OPC), and immature defective astrocytes are major neuropathological denominators. Our recent work using Eif2b5R132H/R132H mice uncovered a fundamental link between eIF2B and mitochondrial function. A decrease in oxidative phosphorylation capacity was observed in mutant astrocytes and fibroblasts. While an adaptive increase in mitochondria abundance corrects the phenotype of mutant fibroblasts, it is not sufficient to compensate for the high-energy demand of astrocytes, explaining their involvement in the disease. To date, astrocytes are marked as central for the disease while eIF2B-mutant OLG are currently assumed to lack a cellular phenotype on their own. Here we show a reduced capacity of eIF2B-mutant OPC isolated from Eif2b5R132H/R132H mice to conduct oxidative respiration despite the adaptive increase in their mitochondrial abundance. We also show their impaired ability to efficiently complete critical differentiation steps towards mature OLG. The concept that defective differentiation of eIF2B-mutant OPC could be a consequence of mitochondrial malfunction is in agreement with numerous studies indicating high dependency of differentiating OLG on accurate mitochondrial performance and ATP availability.
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Affiliation(s)
- Melisa Herrero
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Shir Mandelboum
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Orna Elroy-Stein
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel. .,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel.
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14
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The Dual-Specificity Phosphatase 10 (DUSP10): Its Role in Cancer, Inflammation, and Immunity. Int J Mol Sci 2019; 20:ijms20071626. [PMID: 30939861 PMCID: PMC6480380 DOI: 10.3390/ijms20071626] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/28/2019] [Accepted: 03/30/2019] [Indexed: 12/22/2022] Open
Abstract
Cancer is one of the most diagnosed diseases in developed countries. Inflammation is a common response to different stress situations including cancer and infection. In those processes, the family of mitogen-activated protein kinases (MAPKs) has an important role regulating cytokine secretion, proliferation, survival, and apoptosis, among others. MAPKs regulate a large number of extracellular signals upon a variety of physiological as well as pathological conditions. MAPKs activation is tightly regulated by phosphorylation/dephosphorylation events. In this regard, the dual-specificity phosphatase 10 (DUSP10) has been described as a MAPK phosphatase that negatively regulates p38 MAPK and c-Jun N-terminal kinase (JNK) in several cellular types and tissues. Several studies have proposed that extracellular signal-regulated kinase (ERK) can be also modulated by DUSP10. This suggests a complex role of DUSP10 on MAPKs regulation and, in consequence, its impact in a wide variety of responses involved in both cancer and inflammation. Here, we review DUSP10 function in cancerous and immune cells and studies in both mouse models and patients that establish a clear role of DUSP10 in different processes such as inflammation, immunity, and cancer.
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15
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Begum G, Otsu M, Ahmed U, Ahmed Z, Stevens A, Fulton D. NF-Y-dependent regulation of glutamate receptor 4 expression and cell survival in cells of the oligodendrocyte lineage. Glia 2018; 66:1896-1914. [PMID: 29704264 PMCID: PMC6220837 DOI: 10.1002/glia.23446] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 03/14/2018] [Accepted: 04/11/2018] [Indexed: 12/15/2022]
Abstract
Glutamate receptor subunit 4 (GluA4) is highly expressed by neural cells sensitive to excitotoxicity, and is the predominant subunit expressed by oligodendrocyte precursor cells (OPC) during a key period of vulnerability to hypoxic‐ischemic injury. Therefore, transcriptional networks downstream of excitotoxic GluA4 activation represent a promising area for therapeutic intervention. In this work, we identify the CCAAT binding transcription factor NF‐Yb as a novel transcriptional regulator of Gria4 (GluA4 gene), and a controller of excitotoxic death in the oligodendroglial lineage. We describe a novel regulatory region within Gria4 containing CCAAT sequences whose binding by NF‐Yb is regulated by excitotoxicity. Excitotoxicity‐induced alterations in NF‐Yb binding are associated with changes in Gria4 transcription, while knockdown of NF‐Yb alters the transcription of reporter constructs containing this regulatory region. Data from immortalized and primary OPC reveal that RNAi and pharmacological disruption of NF‐Yb alter Gria4 transcription, with the latter inducing apoptosis and influencing a set of apoptotic genes similarly regulated during excitotoxicity. These data provide the first definition of a trans‐acting mechanism regulating Gria4, and identify the NF‐Y network as a potential source of pharmacological targets for promoting OPC survival.
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Affiliation(s)
- Ghazala Begum
- Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Masahiro Otsu
- Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Usman Ahmed
- Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Zubair Ahmed
- Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Adam Stevens
- Division of Developmental Biology & Medicine, Faculty of Biology, Medicine & Health, University of Manchester, Manchester Academic Health Sciences Centre, Manchester M13 9PL, United Kingdom
| | - Daniel Fulton
- Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
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16
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Pol SU, Polanco JJ, Seidman RA, O'Bara MA, Shayya HJ, Dietz KC, Sim FJ. Network-Based Genomic Analysis of Human Oligodendrocyte Progenitor Differentiation. Stem Cell Reports 2018; 9:710-723. [PMID: 28793249 PMCID: PMC5550273 DOI: 10.1016/j.stemcr.2017.07.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 07/06/2017] [Accepted: 07/07/2017] [Indexed: 12/21/2022] Open
Abstract
Impaired human oligodendrocyte progenitor cell (hOPC) differentiation likely contributes to failed remyelination in multiple sclerosis. The characterization of molecular pathways that regulate hOPC differentiation will provide means to induce remyelination. In this study, we determined the gene expression profile of PDGFαR+ hOPCs during initial oligodendrocyte commitment. Weighted gene coexpression network analysis was used to define progenitor and differentiation-specific gene expression modules and functionally important hub genes. These modules were compared with rodent OPC and oligodendrocyte data to determine the extent of species conservation. These analyses identified G-protein β4 (GNB4), which was associated with hOPC commitment. Lentiviral GNB4 overexpression rapidly induced human oligodendrocyte differentiation. Following xenograft in hypomyelinating shiverer/rag2 mice, GNB4 overexpression augmented myelin synthesis and the ability of hOPCs to ensheath host axons, establishing GNB4 as functionally important in human myelination. As such, network analysis of hOPC gene expression accurately predicts genes that influence human oligodendrocyte differentiation in vivo. Transcriptional database of differentiating human oligodendrocyte progenitor cells WGCNA reveals coordinated gene networks in oligodendrocyte specification Dataset comparison identifies unique and shared cross-species gene networks G-protein β4 (GNB4) expression accelerates human oligodendrocyte differentiation
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Affiliation(s)
- Suyog U Pol
- Neuroscience Program, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA; Department of Biomedical Engineering, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA
| | - Jessie J Polanco
- Neuroscience Program, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA
| | - Richard A Seidman
- Neuroscience Program, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA
| | - Melanie A O'Bara
- Department of Pharmacology and Toxicology, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA
| | - Hani J Shayya
- Department of Pharmacology and Toxicology, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA
| | - Karen C Dietz
- Department of Pharmacology and Toxicology, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA; Neuroscience Program, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA
| | - Fraser J Sim
- Department of Pharmacology and Toxicology, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA; Neuroscience Program, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo NY, USA.
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17
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Schlüter A, Sandoval J, Fourcade S, Díaz-Lagares A, Ruiz M, Casaccia P, Esteller M, Pujol A. Epigenomic signature of adrenoleukodystrophy predicts compromised oligodendrocyte differentiation. Brain Pathol 2018; 28:902-919. [PMID: 29476661 PMCID: PMC6857458 DOI: 10.1111/bpa.12595] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 02/13/2018] [Accepted: 02/16/2018] [Indexed: 12/19/2022] Open
Abstract
Epigenomic changes may either cause disease or modulate its expressivity, adding a layer of complexity to mendelian diseases. X‐linked adrenoleukodystrophy (X‐ALD) is a rare neurometabolic condition exhibiting discordant phenotypes, ranging from a childhood cerebral inflammatory demyelination (cALD) to an adult‐onset mild axonopathy in spinal cords (AMN). The AMN form may occur with superimposed inflammatory brain demyelination (cAMN). All patients harbor loss of function mutations in the ABCD1 peroxisomal transporter of very‐long chain fatty acids. The factors that account for the lack of genotype‐phenotype correlation, even within the same family, remain largely unknown. To gain insight into this matter, here we compared the genome‐wide DNA methylation profiles of morphologically intact frontal white matter areas of children affected by cALD with adult cAMN patients, including male controls in the same age group. We identified a common methylomic signature between the two phenotypes, comprising (i) hypermethylation of genes harboring the H3K27me3 mark at promoter regions, (ii) hypermethylation of genes with major roles in oligodendrocyte differentiation such as MBP, CNP, MOG and PLP1 and (iii) hypomethylation of immune‐associated genes such as IFITM1 and CD59. Moreover, we found increased hypermethylation in CpGs of genes involved in oligodendrocyte differentiation, and also in genes with H3K27me3 marks in their promoter regions in cALD compared with cAMN, correlating with transcriptional and translational changes. Further, using a penalized logistic regression model, we identified the combined methylation levels of SPG20, UNC45A and COL9A3 and also, the combined expression levels of ID4 and MYRF to be good markers capable of discriminating childhood from adult inflammatory phenotypes. We thus propose the hypothesis that an epigenetically controlled, altered transcriptional program may drive an impaired oligodendrocyte differentiation and aberrant immune activation in X‐ALD patients. These results shed light into disease pathomechanisms and uncover putative biomarkers of interest for prognosis and phenotypic stratification.
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Affiliation(s)
- Agatha Schlüter
- Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Barcelona, Spain.,Center for Biomedical Research on Rare Diseases (CIBERER), ISCIII, Spain
| | - Juan Sandoval
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Catalonia, Spain
| | - Stéphane Fourcade
- Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Barcelona, Spain.,Center for Biomedical Research on Rare Diseases (CIBERER), ISCIII, Spain
| | - Angel Díaz-Lagares
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Catalonia, Spain
| | - Montserrat Ruiz
- Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Barcelona, Spain.,Center for Biomedical Research on Rare Diseases (CIBERER), ISCIII, Spain
| | - Patrizia Casaccia
- Department of Neuroscience and Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029.,Neuroscience Initiative ASRC CUNY, 85 St Nicholas Terrace, New York, NY 10031
| | - Manel Esteller
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Catalonia, Spain.,Physiological Sciences Department, School of Medicine and Health Sciences, University of Barcelona (UB), Catalonia, Spain.,Catalan Institution of Research and Advanced Studies (ICREA), Barcelona, Catalonia, Spain
| | - Aurora Pujol
- Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Barcelona, Spain.,Center for Biomedical Research on Rare Diseases (CIBERER), ISCIII, Spain.,Catalan Institution of Research and Advanced Studies (ICREA), Barcelona, Catalonia, Spain
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18
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Hu J, Xu J, Pang L, Zhao H, Li F, Deng Y, Liu L, Lan Y, Zhang X, Zhao T, Xu C, Xu C, Xiao Y, Li X. Systematically characterizing dysfunctional long intergenic non-coding RNAs in multiple brain regions of major psychosis. Oncotarget 2018; 7:71087-71098. [PMID: 27661005 PMCID: PMC5342065 DOI: 10.18632/oncotarget.12122] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 09/12/2016] [Indexed: 12/11/2022] Open
Abstract
Schizophrenia (SZ) and bipolar disorder (BD) are severe neuropsychiatric disorders with serious impact on patients, together termed “major psychosis”. Recently, long intergenic non-coding RNAs (lincRNAs) were reported to play important roles in mental diseases. However, little was known about their molecular mechanism in pathogenesis of SZ and BD. Here, we performed RNA sequencing on 82 post-mortem brain tissues from three brain regions (orbitofrontal cortex (BA11), anterior cingulate cortex (BA24) and dorsolateral prefrontal cortex (BA9)) of patients with SZ and BD and control subjects, generating over one billion reads. We characterized lincRNA transcriptome in the three brain regions and identified 20 differentially expressed lincRNAs (DELincRNAs) in BA11 for BD, 34 and 1 in BA24 and BA9 for SZ, respectively. Our results showed that these DELincRNAs exhibited brain region-specific patterns. Applying weighted gene co-expression network analysis, we revealed that DELincRNAs together with other genes can function as modules to perform different functions in different brain regions, such as immune system development in BA24 and oligodendrocyte differentiation in BA9. Additionally, we found that DNA methylation alteration could partly explain the dysregulation of lincRNAs, some of which could function as enhancers in the pathogenesis of major psychosis. Together, we performed systematical characterization of dysfunctional lincRNAs in multiple brain regions of major psychosis, which provided a valuable resource to understand their roles in SZ and BD pathology and helped to discover novel biomarkers.
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Affiliation(s)
- Jing Hu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Jinyuan Xu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Lin Pang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Hongying Zhao
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Feng Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yulan Deng
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Ling Liu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yujia Lan
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Xinxin Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Tingting Zhao
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Chaohan Xu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Chun Xu
- Department of Psychiatry, Texas Tech University Health Science Center, El Paso, Texas, United States of America
| | - Yun Xiao
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Xia Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
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19
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Bhore N, Wang BJ, Chen YW, Liao YF. Critical Roles of Dual-Specificity Phosphatases in Neuronal Proteostasis and Neurological Diseases. Int J Mol Sci 2017; 18:ijms18091963. [PMID: 28902166 PMCID: PMC5618612 DOI: 10.3390/ijms18091963] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/01/2017] [Accepted: 09/07/2017] [Indexed: 12/31/2022] Open
Abstract
Protein homeostasis or proteostasis is a fundamental cellular property that encompasses the dynamic balancing of processes in the proteostasis network (PN). Such processes include protein synthesis, folding, and degradation in both non-stressed and stressful conditions. The role of the PN in neurodegenerative disease is well-documented, where it is known to respond to changes in protein folding states or toxic gain-of-function protein aggregation. Dual-specificity phosphatases have recently emerged as important participants in maintaining balance within the PN, acting through modulation of cellular signaling pathways that are involved in neurodegeneration. In this review, we will summarize recent findings describing the roles of dual-specificity phosphatases in neurodegeneration and offer perspectives on future therapeutic directions.
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Affiliation(s)
- Noopur Bhore
- Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Yang-Ming University and Academia Sinica, Taipei 11529, Taiwan.
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan.
| | - Bo-Jeng Wang
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan.
| | - Yun-Wen Chen
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan.
| | - Yung-Feng Liao
- Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Yang-Ming University and Academia Sinica, Taipei 11529, Taiwan.
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan.
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20
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Park CK, Park I, Lee S, Sun CH, Koh Y, Park SH, Kim JE, Yun H, Lee SH. Genomic dynamics associated with malignant transformation in IDH1 mutated gliomas. Oncotarget 2016; 6:43653-66. [PMID: 26524630 PMCID: PMC4791257 DOI: 10.18632/oncotarget.6189] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 10/06/2015] [Indexed: 01/06/2023] Open
Abstract
The genomic mechanism responsible for malignant transformation remains an open question for glioma researchers, where differing conclusions have been drawn based on diverse study conditions. Therefore, it is essential to secure direct evidence using longitudinal samples from the same patient. Moreover, malignant transformation of IDH1-mutated gliomas is of potential interest, as its genomic mechanism under influence of oncometabolite remains unclear, and even higher rate of malignant transformation was reported in IDH1-mutated low grade gliomas than in wild-type IDH1 tumors. We have analyzed genomic data using next-generation sequencing technology for longitudinal samples from 3 patients with IDH1-mutated gliomas whose disease had progressed from a low grade to a high grade phenotype. Comprehensive analysis included chromosomal aberrations as well as whole exome and transcriptome sequencing, and the candidate driver genes for malignant transformation were validated with public database. Integrated analysis of genomic dynamics in clonal evolution during the malignant transformation revealed alterations in the machinery regulating gene expression, including the spliceosome complex (U2AF2), transcription factors (TCF12), and chromatin remodelers (ARID1A). Moreover, consequential expression changes implied the activation of genes associated with the restoration of the stemness of cancer cells. The alterations in genetic regulatory mechanisms may be the key factor for the major phenotypic changes in IDH1 mutated gliomas. Despite being limited to a small number of cases, this analysis provides a direct example of the genomic changes responsible for malignant transformation in gliomas.
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Affiliation(s)
- Chul-Kee Park
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
| | | | | | | | - Youngil Koh
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Sung-Hye Park
- Department of Pathology, Seoul National University Hospital, Seoul, Korea
| | - Ja Eun Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
| | | | - Se-Hoon Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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21
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Marziali G, Signore M, Buccarelli M, Grande S, Palma A, Biffoni M, Rosi A, D'Alessandris QG, Martini M, Larocca LM, De Maria R, Pallini R, Ricci-Vitiani L. Metabolic/Proteomic Signature Defines Two Glioblastoma Subtypes With Different Clinical Outcome. Sci Rep 2016; 6:21557. [PMID: 26857460 PMCID: PMC4746700 DOI: 10.1038/srep21557] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 01/22/2016] [Indexed: 01/01/2023] Open
Abstract
Glioblastoma (GBM) is one of the deadliest human cancers. Because of the extremely unfavorable prognosis of GBM, it is important to develop more effective diagnostic and therapeutic strategies based on biologically and clinically relevant subclassification systems. Analyzing a collection of seventeen patient-derived glioblastoma stem-like cells (GSCs) by gene expression profiling, NMR spectroscopy and signal transduction pathway activation, we identified two GSC clusters, one characterized by a pro-neural-like phenotype and the other showing a mesenchymal-like phenotype. Evaluating the levels of proteins differentially expressed by the two GSC clusters in the TCGA GBM sample collection, we found that SRC activation is associated with a GBM subgroup showing better prognosis whereas activation of RPS6, an effector of mTOR pathway, identifies a subgroup with a worse prognosis. The two clusters are also differentiated by NMR spectroscopy profiles suggesting a potential prognostic stratification based on metabolic evaluation. Our data show that the metabolic/proteomic profile of GSCs is informative of the genomic/proteomic GBM landscape, which differs among tumor subtypes and is associated with clinical outcome.
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Affiliation(s)
- G Marziali
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - M Signore
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - M Buccarelli
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - S Grande
- Department of Technology and Health, Istituto Superiore di Sanità, Rome, Italy
| | - A Palma
- Department of Technology and Health, Istituto Superiore di Sanità, Rome, Italy
| | - M Biffoni
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - A Rosi
- Department of Technology and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Q G D'Alessandris
- nstitute of Neurosurgery, Università Cattolica del Sacro Cuore, Rome, Italy
| | - M Martini
- Institute of Anatomic Pathology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - L M Larocca
- Institute of Anatomic Pathology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - R De Maria
- Regina Elena National Cancer Institute, Rome, Italy
| | - R Pallini
- nstitute of Neurosurgery, Università Cattolica del Sacro Cuore, Rome, Italy
| | - L Ricci-Vitiani
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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22
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Tomas-Roig J, Wirths O, Salinas-Riester G, Havemann-Reinecke U. The Cannabinoid CB1/CB2 Agonist WIN55212.2 Promotes Oligodendrocyte Differentiation In Vitro and Neuroprotection During the Cuprizone-Induced Central Nervous System Demyelination. CNS Neurosci Ther 2016; 22:387-95. [PMID: 26842941 PMCID: PMC5067581 DOI: 10.1111/cns.12506] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 12/07/2015] [Accepted: 12/08/2015] [Indexed: 12/13/2022] Open
Abstract
Aim and methods Different types of insults to the CNS lead to axon demyelination. Remyelination occurs when the CNS attempts to recover from myelin loss and requires the activation of oligodendrocyte precursor cells. With the rationale that CB1 receptor is expressed in oligodendrocytes and marijuana consumption alters CNS myelination, we study the effects of the cannabinoid agonist WIN55212.2 in (1) an in vitro model of oligodendrocyte differentiation and (2) the cuprizone model for demyelination. Results The synthetic cannabinoid agonist WIN55212.2 at 1 μM increased the myelin basic protein mRNA and protein expression in vitro. During cuprizone‐induced acute demyelination, the administration of 0.5 mg/kg WIN55212.2 confers more myelinated axons, increased the expression of retinoid X receptor alpha, and declined nogo receptor expression. Controversially, 1 mg/kg of the drug increased the number of demyelinated axons and reduced the expression of nerve growth factor inducible, calreticulin and myelin‐related genes coupling specifically with a decrease in 2′,3′‐cyclic nucleotide 3′ phosphodiesterase expression. Conclusion The cannabinoid agonist WIN55212.2 promotes oligodendrocyte differentiation in vitro. Moreover, 0.5 mg/kg of the drug confers neuroprotection during cuprizone‐induced demyelination, while 1 mg/kg aggravates the demyelination process.
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Affiliation(s)
- Jordi Tomas-Roig
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany.,Center Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), Göttingen, Germany
| | - Oliver Wirths
- Division of Molecular Psychiatry, Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
| | - Gabriela Salinas-Riester
- Department of Developmental Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Ursula Havemann-Reinecke
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany.,Center Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), Göttingen, Germany
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23
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Porcu G, Serone E, De Nardis V, Di Giandomenico D, Lucisano G, Scardapane M, Poma A, Ragnini-Wilson A. Clobetasol and Halcinonide Act as Smoothened Agonists to Promote Myelin Gene Expression and RxRγ Receptor Activation. PLoS One 2015; 10:e0144550. [PMID: 26658258 PMCID: PMC4689554 DOI: 10.1371/journal.pone.0144550] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 11/19/2015] [Indexed: 12/14/2022] Open
Abstract
One of the causes of permanent disability in chronic multiple sclerosis patients is the inability of oligodendrocyte progenitor cells (OPCs) to terminate their maturation program at lesions. To identify key regulators of myelin gene expression acting at the last stages of OPC maturation we developed a drug repositioning strategy based on the mouse immortalized oligodendrocyte (OL) cell line Oli-neu brought to the premyelination stage by stably expressing a key factor regulating the last stages of OL maturation. The Prestwick Chemical Library® of 1,200 FDA-approved compound(s) was repositioned at three dosages based on the induction of Myelin Basic Protein (MBP) expression. Drug hits were further validated using dosage-dependent reproducibility tests and biochemical assays. The glucocorticoid class of compounds was the most highly represented and we found that they can be divided in three groups according to their efficacy on MBP up-regulation. Since target identification is crucial before bringing compounds to the clinic, we searched for common targets of the primary screen hits based on their known chemical-target interactomes, and the pathways predicted by top ranking compounds were validated using specific inhibitors. Two of the top ranking compounds, Halcinonide and Clobetasol, act as Smoothened (Smo) agonists to up-regulate myelin gene expression in the Oli-neuM cell line. Further, RxRγ activation is required for MBP expression upon Halcinonide and Clobetasol treatment. These data indicate Clobetasol and Halcinonide as potential promyelinating drugs and also provide a mechanistic understanding of their mode of action in the pathway leading to myelination in OPCs. Furthermore, our classification of glucocorticoids with respect to MBP expression provides important novel insights into their effects in the CNS and a rational criteria for their choice in combinatorial therapies in de-myelinating diseases.
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Affiliation(s)
- Giampiero Porcu
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
- Department of Translational Pharmacology, Fondazione Mario Negri Sud, S. Maria Imbaro (CH), Italy
| | - Eliseo Serone
- Department of Translational Pharmacology, Fondazione Mario Negri Sud, S. Maria Imbaro (CH), Italy
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L’Aquila, Italy
| | - Velia De Nardis
- Department of Translational Pharmacology, Fondazione Mario Negri Sud, S. Maria Imbaro (CH), Italy
| | - Daniele Di Giandomenico
- Department of Translational Pharmacology, Fondazione Mario Negri Sud, S. Maria Imbaro (CH), Italy
| | - Giuseppe Lucisano
- Department of Translational Pharmacology, Fondazione Mario Negri Sud, S. Maria Imbaro (CH), Italy
- Center for Outcomes Research and Clinical Epidemiology, Pescara, Italy
- Dipartimento di Scienze Mediche di Base, Neuroscienze ed Organi di Senso, Università di Bari Aldo Moro, Bari, Italy
| | - Marco Scardapane
- Department of Translational Pharmacology, Fondazione Mario Negri Sud, S. Maria Imbaro (CH), Italy
- Center for Outcomes Research and Clinical Epidemiology, Pescara, Italy
| | - Anna Poma
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L’Aquila, Italy
| | - Antonella Ragnini-Wilson
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
- Department of Translational Pharmacology, Fondazione Mario Negri Sud, S. Maria Imbaro (CH), Italy
- * E-mail:
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24
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Simon K, Hennen S, Merten N, Blättermann S, Gillard M, Kostenis E, Gomeza J. The Orphan G Protein-coupled Receptor GPR17 Negatively Regulates Oligodendrocyte Differentiation via Gαi/o and Its Downstream Effector Molecules. J Biol Chem 2015; 291:705-18. [PMID: 26620557 DOI: 10.1074/jbc.m115.683953] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Indexed: 01/08/2023] Open
Abstract
Recent studies have recognized G protein-coupled receptors as important regulators of oligodendrocyte development. GPR17, in particular, is an orphan G protein-coupled receptor that has been identified as oligodendroglial maturation inhibitor because its stimulation arrests primary mouse oligodendrocytes at a less differentiated stage. However, the intracellular signaling effectors transducing its activation remain poorly understood. Here, we use Oli-neu cells, an immortalized cell line derived from primary murine oligodendrocytes, and primary rat oligodendrocyte cultures as model systems to identify molecular targets that link cell surface GPR17 to oligodendrocyte maturation blockade. We demonstrate that stimulation of GPR17 by the small molecule agonist MDL29,951 (2-carboxy-4,6-dichloro-1H-indole-3-propionic acid) decreases myelin basic protein expression levels mainly by triggering the Gαi/o signaling pathway, which in turn leads to reduced activity of the downstream cascade adenylyl cyclase-cAMP-PKA-cAMP response element-binding protein (CREB). In addition, we show that GPR17 activation also diminishes myelin basic protein abundance by lessening stimulation of the exchange protein directly activated by cAMP (EPAC), thus uncovering a previously unrecognized role for EPAC to regulate oligodendrocyte differentiation. Together, our data establish PKA and EPAC as key downstream effectors of GPR17 that inhibit oligodendrocyte maturation. We envisage that treatments augmenting PKA and/or EPAC activity represent a beneficial approach for therapeutic enhancement of remyelination in those demyelinating diseases where GPR17 is highly expressed, such as multiple sclerosis.
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Affiliation(s)
- Katharina Simon
- From the Institute of Pharmaceutical Biology, Section Molecular, Cellular, and Pharmacobiology, University of Bonn, 53115 Bonn, Germany and
| | - Stephanie Hennen
- From the Institute of Pharmaceutical Biology, Section Molecular, Cellular, and Pharmacobiology, University of Bonn, 53115 Bonn, Germany and
| | - Nicole Merten
- From the Institute of Pharmaceutical Biology, Section Molecular, Cellular, and Pharmacobiology, University of Bonn, 53115 Bonn, Germany and
| | - Stefanie Blättermann
- From the Institute of Pharmaceutical Biology, Section Molecular, Cellular, and Pharmacobiology, University of Bonn, 53115 Bonn, Germany and
| | | | - Evi Kostenis
- From the Institute of Pharmaceutical Biology, Section Molecular, Cellular, and Pharmacobiology, University of Bonn, 53115 Bonn, Germany and
| | - Jesus Gomeza
- From the Institute of Pharmaceutical Biology, Section Molecular, Cellular, and Pharmacobiology, University of Bonn, 53115 Bonn, Germany and
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25
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Proctor DT, Stotz SC, Scott LOM, de la Hoz CLR, Poon KWC, Stys PK, Colicos MA. Axo-glial communication through neurexin-neuroligin signaling regulates myelination and oligodendrocyte differentiation. Glia 2015; 63:2023-2039. [PMID: 26119281 DOI: 10.1002/glia.22875] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 05/25/2015] [Accepted: 06/02/2015] [Indexed: 12/13/2022]
Abstract
Axonal transsynaptic signaling between presynaptic neurexin (NX) and postsynaptic neuroligin (NL) is essential for many properties of synaptic connectivity. Here, we demonstrate the existence of a parallel axo-glial signaling pathway between axonal NX and oligodendritic (OL) NL3. We show that this pathway contributes to the regulation of myelinogenesis, the maintenance of established myelination, and the differentiation state of the OL using in vitro models. We first confirm that NL3 mRNA and protein are expressed in OLs and in OL precursors. We then show that OLs in culture form contacts with non-neuronal cells exogenously expressing NL3's binding partners NX1α or NX1β. Conversely, blocking axo-glial NX-NL3 signaling by saturating NX with exogenous soluble NL protein (NL-ECD) disrupts interactions between OLs and axons in both in vitro and ex vivo assays. Myelination by OLs is tied to their differentiation state, and we find that blocking NX-NL signaling with soluble NL protein also caused OL differentiation to stall at an immature stage. Moreover, in vitro knockdown of NL3 in OLs with siRNAs stalls their development and reduces branching complexity. Interestingly, inclusion of an autism related mutation in the NL blocking protein attenuates these effects; OLs differentiate and the dynamics of OL-axon signaling occur normally as this peptide does not disrupt NX-NL3 axo-glial interactions. Our findings provide evidence not only for a new pathway in axo-glial communication, they also potentially explain the correlation between altered white matter and autism. GLIA 2015;63:2023-2039.
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Affiliation(s)
- Dustin T Proctor
- Department of Physiology & Pharmacology, Faculty of Medicine, and the Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, T2N 4N1
| | - Stephanie C Stotz
- Department of Physiology & Pharmacology, Faculty of Medicine, and the Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, T2N 4N1
| | - Lucas O M Scott
- Department of Physiology & Pharmacology, Faculty of Medicine, and the Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, T2N 4N1
| | - Cristiane L R de la Hoz
- Department of Physiology & Pharmacology, Faculty of Medicine, and the Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, T2N 4N1
| | - Kelvin W C Poon
- Department of Clinical Neurosciences, Faculty of Medicine and the Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, T2N 4N1
| | - Peter K Stys
- Department of Clinical Neurosciences, Faculty of Medicine and the Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, T2N 4N1
| | - Michael A Colicos
- Department of Physiology & Pharmacology, Faculty of Medicine, and the Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, T2N 4N1
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26
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Hömmö T, Pesu M, Moilanen E, Korhonen R. Regulation of Inflammatory Cytokine Production by MKP-5 in Macrophages. Basic Clin Pharmacol Toxicol 2015; 117:96-104. [DOI: 10.1111/bcpt.12380] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 01/09/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Tuija Hömmö
- The Immunopharmacology Research Group; University of Tampere School of Medicine and Tampere University Hospital; Tampere Finland
| | - Marko Pesu
- Immunoregulation; BioMediTech; University of Tampere; Tampere Finland
- Department of Dermatology and Fimlab Laboratories; Pirkanmaa Hospital District; Tampere Finland
| | - Eeva Moilanen
- The Immunopharmacology Research Group; University of Tampere School of Medicine and Tampere University Hospital; Tampere Finland
| | - Riku Korhonen
- The Immunopharmacology Research Group; University of Tampere School of Medicine and Tampere University Hospital; Tampere Finland
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Caveolin-1 regulates genomic action of the glucocorticoid receptor in neural stem cells. Mol Cell Biol 2014; 34:2611-23. [PMID: 24777604 DOI: 10.1128/mcb.01121-13] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
While glucocorticoids (GCs) are used clinically to treat many conditions, their neonatal and prenatal usage is increasingly controversial due to reports of delayed adverse outcomes, especially their effects on brain development. Such alterations may reflect the impact of GCs on neural progenitor/stem cell (NPSC) function. We previously demonstrated that the lipid raft protein caveolin-1 (Cav-1) was required for rapid GC signaling in embryonic mouse NPSCs operating through plasma membrane-bound glucocorticoid receptors (GRs). We show here that genomic GR signaling in NPSCs requires Cav-1. Loss of Cav-1 impacts the transcriptional response of many GR target genes (e.g., the serum- and glucocorticoid-regulated kinase 1 gene) that are likely to mediate the antiproliferative effects of GCs. Microarray analysis of wild-type C57 or Cav-1-deficient NPSCs identified approximately 100 genes that are differentially regulated by GC treatment. These changes in hormone responsiveness in Cav-1 knockout NPSCs are associated with the loss of GC-regulated phosphorylation of GR at serine 211 but not at serine 226. Chromatin recruitment of total GR to regulatory regions of target genes such as Fkbp-5, RhoJ, and Sgk-1, as well as p211-GR recruitment to Sgk-1, are compromised in Cav-1 knockout NPSCs. Cav-1 is therefore a multifunctional regulator of GR in NPSCs influencing both rapid and genomic action of the receptor to impact cell proliferation.
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Transcription factor induction of human oligodendrocyte progenitor fate and differentiation. Proc Natl Acad Sci U S A 2014; 111:E2885-94. [PMID: 24982138 DOI: 10.1073/pnas.1408295111] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Human oligodendrocyte progenitor cell (OPC) specification and differentiation occurs slowly and limits the potential for cell-based treatment of demyelinating disease. In this study, using FACS-based isolation and microarray analysis, we identified a set of transcription factors expressed by human primary CD140a(+)O4(+) OPCs relative to CD133(+)CD140a(-) neural stem/progenitor cells (NPCs). Among these, lentiviral overexpression of transcription factors ASCL1, SOX10, and NKX2.2 in NPCs was sufficient to induce Sox10 enhancer activity, OPC mRNA, and protein expression consistent with OPC fate; however, unlike ASCL1 and NKX2.2, only the transcriptome of SOX10-infected NPCs was induced to a human OPC gene expression signature. Furthermore, only SOX10 promoted oligodendrocyte commitment, and did so at quantitatively equivalent levels to native OPCs. In xenografts of shiverer/rag2 animals, SOX10 increased the rate of mature oligodendrocyte differentiation and axon ensheathment. Thus, SOX10 appears to be the principle and rate-limiting regulator of myelinogenic fate from human NPCs.
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Ríos P, Nunes-Xavier CE, Tabernero L, Köhn M, Pulido R. Dual-specificity phosphatases as molecular targets for inhibition in human disease. Antioxid Redox Signal 2014; 20:2251-73. [PMID: 24206177 DOI: 10.1089/ars.2013.5709] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
SIGNIFICANCE The dual-specificity phosphatases (DUSPs) constitute a heterogeneous group of cysteine-based protein tyrosine phosphatases, whose members exert a pivotal role in cell physiology by dephosphorylation of phosphoserine, phosphothreonine, and phosphotyrosine residues from proteins, as well as other non-proteinaceous substrates. RECENT ADVANCES A picture is emerging in which a selected group of DUSP enzymes display overexpression or hyperactivity that is associated with human disease, especially human cancer, making feasible targeted therapy approaches based on their inhibition. A panoply of molecular and functional studies on DUSPs have been performed in the previous years, and drug-discovery efforts are ongoing to develop specific and efficient DUSP enzyme inhibitors. This review summarizes the current status on inhibitory compounds targeting DUSPs that belong to the MAP kinase phosphatases-, small-sized atypical-, and phosphatases of regenerating liver subfamilies, whose inhibition could be beneficial for the prevention or mitigation of human disease. CRITICAL ISSUES Achieving specificity, potency, and bioavailability are the major challenges in the discovery of DUSP inhibitors for the clinics. Clinical validation of compounds or alternative inhibitory strategies of DUSP inhibition has yet to come. FUTURE DIRECTIONS Further work is required to understand the dual role of many DUSPs in human cancer, their function-structure properties, and to identify their physiologic substrates. This will help in the implementation of therapies based on DUSPs inhibition.
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Affiliation(s)
- Pablo Ríos
- 1 Genome Biology Unit, European Molecular Biology Laboratory , Heidelberg, Germany
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E2F1 coregulates cell cycle genes and chromatin components during the transition of oligodendrocyte progenitors from proliferation to differentiation. J Neurosci 2014; 34:1481-93. [PMID: 24453336 DOI: 10.1523/jneurosci.2840-13.2014] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Cell cycle exit is an obligatory step for the differentiation of oligodendrocyte progenitor cells (OPCs) into myelinating cells. A key regulator of the transition from proliferation to quiescence is the E2F/Rb pathway, whose activity is highly regulated in physiological conditions and deregulated in tumors. In this paper we report a lineage-specific decline of nuclear E2F1 during differentiation of rodent OPC into oligodendrocytes (OLs) in developing white matter tracts and in cultured cells. Using chromatin immunoprecipitation (ChIP) and deep-sequencing in mouse and rat OPCs, we identified cell cycle genes (i.e., Cdc2) and chromatin components (i.e., Hmgn1, Hmgn2), including those modulating DNA methylation (i.e., Uhrf1), as E2F1 targets. Binding of E2F1 to chromatin on the gene targets was validated and their expression assessed in developing white matter tracts and cultured OPCs. Increased expression of E2F1 gene targets was also detected in mouse gliomas (that were induced by retroviral transformation of OPCs) compared with normal brain. Together, these data identify E2F1 as a key transcription factor modulating the expression of chromatin components in OPC during the transition from proliferation to differentiation.
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Li W, Tang Y, Fan Z, Meng Y, Yang G, Luo J, Ke ZJ. Autophagy is involved in oligodendroglial precursor-mediated clearance of amyloid peptide. Mol Neurodegener 2013; 8:27. [PMID: 23938027 PMCID: PMC3751621 DOI: 10.1186/1750-1326-8-27] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 08/06/2013] [Indexed: 01/09/2023] Open
Abstract
Background Accumulation of β-amyloid peptides is an important hallmark of Alzheimer’s disease (AD). Tremendous efforts have been directed to elucidate the mechanisms of β-amyloid peptides degradation and develop strategies to remove β-amyloid accumulation. In this study, we demonstrated that a subpopulation of oligodendroglial precursor cells, also called NG2 cells, were a new cell type that can clear β-amyloid peptides in the AD transgene mice and in NG2 cell line. Results NG2 cells were recruited and clustered around the amyloid plaque in the APPswe/PS1dE9 mice, which is Alzheimer’s disease mouse model. In vitro, NG2 cell line and primary NG2 cells engulfed β-amyloid peptides through the mechanisms of endocytosis in a time dependent manner. Endocytosis is divided into pinocytosis and phagocytosis. Aβ42 internalization by NG2 cells was mediated by actin-dependent macropinocytosis. The presence of β-amyloid peptides stimulated the autophagic pathway in NG2 cells. Once inside the cells, the β-amyloid peptides in NG2 cells were transported to lysosomes and degraded by autophagy. Conclusions Our findings suggest that NG2 cells are a new cell type that can clear β-amyloid peptides through endocytosis and autophagy.
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Affiliation(s)
- Wenxia Li
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai 200031, China
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Sütterlin P, Williams EJ, Chambers D, Saraf K, von Schack D, Reisenberg M, Doherty P, Williams G. The molecular basis of the cooperation between EGF, FGF and eCB receptors in the regulation of neural stem cell function. Mol Cell Neurosci 2012; 52:20-30. [PMID: 23085403 DOI: 10.1016/j.mcn.2012.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 09/18/2012] [Accepted: 10/10/2012] [Indexed: 01/29/2023] Open
Abstract
Adult neurogenesis relies on EGF and FGF receptor (EGFR/FGFR) function and endocannabinoid (eCB) signalling. Here we have used a neural stem cell (NSC) line to determine how these systems cooperate to regulate neurogenesis. The results show the EGFR to be solely responsible for maintaining PI3K activation explaining its dominant role in promoting NSC survival. The EGFR and FGFR synergistically regulate the ERK/MAPK pathway, and this explains the requirement for both for optimal cell proliferation. The eCB receptors did not contribute to activation of the PI3K or ERK/MAPK pathways, highlighting the importance of another major proliferation pathway. The EGFR plays the dominant role in maintaining the transcriptome, with significant changes in the expression of over 3500 transcripts seen within hours of inhibition or activation of this receptor. The FGFR has a more modest effect on transcription with evidence for nodal integration with EGFR signalling at the level of the ERK/MAPK pathway. A common set of transcripts are regulated by the CB1 and CB2 receptors, with cooperation between these receptors and the EGFR apparent in the regulation of a pool of transcripts, most likely representing signal integration downstream from an as yet to be identified node. Finally, a first level molecular analysis of the transcriptional response shows regulation of a number of key growth factors, growth factor receptors and GPCRs to be under the control of the EGFR.
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Affiliation(s)
- Philipp Sütterlin
- The Wolfson Centre for Age-Related Diseases, King's College London, London SE1 9RT, UK
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Schmidt F, van den Eijnden M, Pescini Gobert R, Saborio GP, Carboni S, Alliod C, Pouly S, Staugaitis SM, Dutta R, Trapp B, Hooft van Huijsduijnen R. Identification of VHY/Dusp15 as a regulator of oligodendrocyte differentiation through a systematic genomics approach. PLoS One 2012; 7:e40457. [PMID: 22792334 PMCID: PMC3394735 DOI: 10.1371/journal.pone.0040457] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 06/07/2012] [Indexed: 12/20/2022] Open
Abstract
Multiple sclerosis (MS) is a neuroinflammatory disease characterized by a progressive loss of myelin and a failure of oligodendrocyte (OL)-mediated remyelination, particularly in the progressive phases of the disease. An improved understanding of the signaling mechanisms that control differentiation of OL precursors may lead to the identification of new therapeutic targets for remyelination in MS. About 100 mammalian Protein Tyrosine Phosphatases (PTPs) are known, many of which are involved in signaling both in health and disease. We have undertaken a systematic genomic approach to evaluate PTP gene activity in multiple sclerosis autopsies and in related in vivo and in vitro models of the disease. This effort led to the identification of Dusp15/VHY, a PTP previously believed to be expressed only in testis, as being transcriptionally regulated during OL differentiation and in MS lesions. Subsequent RNA interference studies revealed that Dusp15/VHY is a key regulator of OL differentiation. Finally, we identified PDGFR-beta and SNX6 as novel and specific Dusp15 substrates, providing an indication as to how this PTP might exert control over OL differentiation.
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Niu J, Wang L, Liu S, Li C, Kong J, Shen HY, Xiao L. An efficient and economical culture approach for the enrichment of purified oligodendrocyte progenitor cells. J Neurosci Methods 2012; 209:241-9. [PMID: 22687939 DOI: 10.1016/j.jneumeth.2012.05.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 05/29/2012] [Accepted: 05/30/2012] [Indexed: 10/28/2022]
Abstract
Oligodendrocyte progenitor cell (OPC) culture has provided a powerful approach to mechanistically investigate the proliferation and differentiation of oligodendroglia. However, existing culture methods (including the traditional shake-off method) have limitations, particularly their low productivities. Therefore, we developed a simplified and highly efficient method to produce a large yield of OPCs with low expense by using specialised modified media, in which B104-conditioned medium (B104-CM) instead of growth factors was used as a mitogenic source for OPC propagation, while a modified OPC isolation-medium was applied to improve the isolation of OPCs. First, we withdrew foetal bovine serum when primary mixed glial cultures were 65-75% confluent and substituted with modified oligodendrocyte growth medium to enrich OPCs. Second, we employed a chemical-based method to isolate and purify OPCs from mixed glial cultures using a modified oligodendrocyte isolation medium. As a result, our approach produced a high yield of purified OPCs, approximately 90-fold higher than that produced via the traditional shake-off method. Importantly, the purified OPCs produced via our modified approach maintained typical capacities of proliferation and differentiation observed in oligodendrocyte lineage cells. Together, our modified method provides a highly efficient approach to OPC culture for oligodendrocyte research.
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Affiliation(s)
- Jianqin Niu
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing 400038, China
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Niu J, Mei F, Wang L, Liu S, Tian Y, Mo W, Li H, Lu QR, Xiao L. Phosphorylated olig1 localizes to the cytosol of oligodendrocytes and promotes membrane expansion and maturation. Glia 2012; 60:1427-36. [PMID: 22639060 DOI: 10.1002/glia.22364] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 04/03/2012] [Accepted: 05/07/2012] [Indexed: 11/11/2022]
Abstract
Oligodendroglial cells undergo rapid transcriptional and dynamic morphological transformation in order to effectively myelinate neuronal axons. Olig1, a basic helix-loop-helix transcription factor, functions to promote the transcription of myelin-specific genes and promotes differentiation and (re)myelination. While the role for nuclear Olig1 is well established, the function for cytoplasmic Olig1 remains uncertain. We observe that translocation of Olig1 into the cytosol highly correlates with differentiation of oligodendrocytes both invivo and invitro. By enforcing expression of a nuclear-specific form of Olig1 into OPCs in a null-Olig1 background, we demonstrate that nuclear Olig1 is sufficient to facilitate MBP expression, but with greatly diminished membrane volume and area. We demonstrate that serine 138 in the helix-loop-helix domain of Olig1 is phosphorylated and that this form resides in the cytosol. Mutating serine 138 to alanine restricts Olig1 to the nucleus, facilitating MBP expression but limiting membrane expansion. However, a serine to aspartic acid mutation results in the cytoplasmic localization of Olig1 enhancing membrane expansion. Our results suggest a novel role for a phosphorylated cytosolic Olig1 in membrane expansion and maturation of oligodendrocytes.
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Affiliation(s)
- Jianqin Niu
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing, China
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Zorniak M, Clark PA, Leeper HE, Tipping MD, Francis DM, Kozak KR, Salamat MS, Kuo JS. Differential expression of 2',3'-cyclic-nucleotide 3'-phosphodiesterase and neural lineage markers correlate with glioblastoma xenograft infiltration and patient survival. Clin Cancer Res 2012; 18:3628-36. [PMID: 22589395 DOI: 10.1158/1078-0432.ccr-12-0339] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE Glioblastoma multiforme (GBM) is a poorly treated human brain cancer with few established clinically useful molecular prognostic markers. We characterized glioblastoma stem-like cells (GSC) according to developmental neural lineage markers and correlated their expression with patient survival. EXPERIMENTAL DESIGN Immunoblot array of neural lineage markers classified five independently isolated human GSC lines into three classes exhibiting differential expression of oligodendrocyte progenitor cells (OPC), astrocyte progenitor cells (APC), and neural progenitor cells (NPC) markers. Immunodeficient mice were orthotopically implanted with each cell line to evaluate tumor infiltration and recipient survival. 2',3'-Cyclic-nucleotide 3'-phosphodiesterase (CNP) antigenic expression was used to evaluate a clinically annotated GBM tissue microarray with 115 specimens. RESULTS We report that molecular classification of patient-derived GSCs using neural lineage markers show association with differential xenograft invasiveness, and also show significant correlation to survival in both the mouse model and human patients. Orthotopic implantation into immunodeficient mice showed Ki-67 proliferative index independent xenograft infiltration: class I GSCs (OPC and NPC positive) established focal lesions, class II GSCs (NPC positive) formed minimally invasive lesions, and class III GSCs (APC positive) established highly infiltrative lesions. The OPC marker, CNP also exhibited high expression in focal xenografts versus low expression in invasive xenografts. Differential CNP expression correlated with mouse model survival, and CNP immunoassay of a large GBM tissue microarray also showed significant differential patient survival. CONCLUSIONS GSC classification with developmental neural lineage markers revealed CNP as a novel and potentially useful clinical prognosis marker, and suggests clinical importance for patient-specific GSC analysis.
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Affiliation(s)
- Michael Zorniak
- Neuroscience Training Program, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA
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Myllykoski M, Raasakka A, Han H, Kursula P. Myelin 2',3'-cyclic nucleotide 3'-phosphodiesterase: active-site ligand binding and molecular conformation. PLoS One 2012; 7:e32336. [PMID: 22393399 PMCID: PMC3290555 DOI: 10.1371/journal.pone.0032336] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 01/26/2012] [Indexed: 01/19/2023] Open
Abstract
The 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNPase) is a highly abundant membrane-associated enzyme in the myelin sheath of the vertebrate nervous system. CNPase is a member of the 2H phosphoesterase family and catalyzes the formation of 2'-nucleotide products from 2',3'-cyclic substrates; however, its physiological substrate and function remain unknown. It is likely that CNPase participates in RNA metabolism in the myelinating cell. We solved crystal structures of the phosphodiesterase domain of mouse CNPase, showing the binding mode of nucleotide ligands in the active site. The binding mode of the product 2'-AMP provides a detailed view of the reaction mechanism. Comparisons of CNPase crystal structures highlight flexible loops, which could play roles in substrate recognition; large differences in the active-site vicinity are observed when comparing more distant members of the 2H family. We also studied the full-length CNPase, showing its N-terminal domain is involved in RNA binding and dimerization. Our results provide a detailed picture of the CNPase active site during its catalytic cycle, and suggest a specific function for the previously uncharacterized N-terminal domain.
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Affiliation(s)
- Matti Myllykoski
- Department of Biochemistry and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Arne Raasakka
- Department of Biochemistry and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Huijong Han
- Department of Biochemistry and Biocenter Oulu, University of Oulu, Oulu, Finland
- Centre for Structural Systems Biology, Helmholtz Centre for Infection Research (CSSB-HZI), German Electron Synchrotron (DESY), Hamburg, Germany
| | - Petri Kursula
- Department of Biochemistry and Biocenter Oulu, University of Oulu, Oulu, Finland
- Centre for Structural Systems Biology, Helmholtz Centre for Infection Research (CSSB-HZI), German Electron Synchrotron (DESY), Hamburg, Germany
- Department of Chemistry, University of Hamburg, Hamburg, Germany
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F3/Contactin acts as a modulator of neurogenesis during cerebral cortex development. Dev Biol 2012; 365:133-51. [PMID: 22360968 DOI: 10.1016/j.ydbio.2012.02.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 01/13/2012] [Accepted: 02/10/2012] [Indexed: 12/18/2022]
Abstract
The expression of the cell recognition molecule F3/Contactin (CNTN1) is generally associated with the functions of post-mitotic neurons. In the embryonic cortex, however, we find it expressed by proliferating ventricular zone (VZ) precursors. In contrast to previous findings in the developing cerebellum, F3/Contactin transgenic overexpression in the early cortical VZ promotes proliferation and expands the precursor pool at the expense of neurogenesis. At later stages, when F3/Contactin levels subside, however, neurogenesis resumes, suggesting that F3/Contactin expression in the VZ is inversely related to neurogenesis and plays a role in a feedback control mechanism, regulating the orderly progression of cortical development. The modified F3/Contactin profile therefore results in delayed corticogenesis, as judged by downregulation in upper and lower layer marker expression and by BrdU birth dating, indicating that, in this transgenic model, increased F3/Contactin levels counteract neuronal precursor commitment. These effects also occur in primary cultures and are reproduced by addition of an F3/Fc fusion protein to wild type cultures. Together, these data indicate a completely novel function for F3/Contactin. Parallel changes in the generation of the Notch Intracellular Domain and in the expression of the Hes-1 transcription factor indicate that activation of the Notch pathway plays a role in this phenotype, consistent with previous in vitro reports that F3/Contactin is a Notch1 ligand.
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Chaerkady R, Letzen B, Renuse S, Sahasrabuddhe NA, Kumar P, All AH, Thakor NV, Delanghe B, Gearhart JD, Pandey A, Kerr CL. Quantitative temporal proteomic analysis of human embryonic stem cell differentiation into oligodendrocyte progenitor cells. Proteomics 2011; 11:4007-20. [PMID: 21770034 DOI: 10.1002/pmic.201100107] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 06/19/2011] [Accepted: 07/01/2011] [Indexed: 11/11/2022]
Abstract
Oligodendrocytes (OLs) are glial cells of the central nervous system, which produce myelin. Cultured OLs provide immense therapeutic opportunities for treating a variety of neurological conditions. One of the most promising sources for such therapies is human embryonic stem cells (ESCs) as well as providing a model to study human OL development. For these purposes, an investigation of proteome level changes is critical for understanding the process of OL differentiation. In this report, an iTRAQ-based quantitative proteomic approach was used to study multiple steps during OL differentiation including neural progenitor cells, glial progenitor cells and oligodendrocyte progenitor cells (OPCs) compared to undifferentiated ESCs. Using a 1% false discovery rate cutoff, ∼3145 proteins were quantitated and several demonstrated progressive stage-specific expression. Proteins such as transferrin, neural cell adhesion molecule 1, apolipoprotein E and wingless-related MMTV integration site 5A showed increased expression from the neural progenitor cell to the OPC stage. Several proteins that have demonstrated evidence or been suspected in OL maturation were also found upregulated in OPCs including fatty acid-binding protein 4, THBS1, bone morphogenetic protein 1, CRYAB, transferrin, tenascin C, COL3A1, TGFBI and EPB41L3. Thus, by providing the first extensive proteomic profiling of human ESC differentiation into OPCs, this study provides many novel proteins that are potentially involved in OL development.
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Affiliation(s)
- Raghothama Chaerkady
- McKusick-Nathans Institute of Genetic Medicine and Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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Kremer D, Aktas O, Hartung HP, Küry P. The complex world of oligodendroglial differentiation inhibitors. Ann Neurol 2011; 69:602-18. [PMID: 21520230 DOI: 10.1002/ana.22415] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Myelination is a central nervous system (CNS) process wherein oligodendrocyte-axon interactions lead to the establishment of myelin sheaths that stabilize, protect, and electrically insulate axons. In inflammatory demyelinating diseases such as multiple sclerosis (MS), the degeneration and eventual loss of functional myelin sheaths slows and blocks saltatory conduction in axons, which results in clinical impairment. However, remyelination can occur, and lesions can be partially repaired, resulting in clinical remission. The recruitment and activation of resident oligodendrocyte precursor cells (OPCs) play a critical role in the repair process because these cells have the capacity to differentiate into functional myelinating cells. Mature oligodendrocytes, however, are thought to have lost the capacity to develop new myelin sheaths and frequently undergo programmed cell death in MS. The endogenous capacity to generate new oligodendrocytes in MS is limited, and this is predominantly due to the presence of inhibitory components that block OPC differentiation and maturation. Here, we present an overview of recently identified negative regulators of oligodendroglial differentiation and their potential relevance for CNS repair in MS. Because currently available immunomodulatory drugs for MS mainly target inflammatory cascades outside the brain and fail to repair existing lesions, achieving more efficient lesion repair constitutes an important goal for future MS therapies.
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Affiliation(s)
- David Kremer
- Department of Neurology, Medical Faculty, Heinrich-Heine-University of Düsseldorf, Düsseldorf, Germany
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Identification of a gene regulatory network necessary for the initiation of oligodendrocyte differentiation. PLoS One 2011; 6:e18088. [PMID: 21490970 PMCID: PMC3072388 DOI: 10.1371/journal.pone.0018088] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Accepted: 02/20/2011] [Indexed: 11/19/2022] Open
Abstract
Differentiation of oligodendrocyte progenitor cells (OPCs) into mature oligodendrocytes requires extensive changes in gene expression, which are partly mediated by post-translational modifications of nucleosomal histones. An essential modification for oligodendrocyte differentiation is the removal of acetyl groups from lysine residues which is catalyzed by histone deacetylases (HDACs). The transcriptional targets of HDAC activity within OPCs however, have remained elusive and have been identified in this study by interrogating the oligodendrocyte transcriptome. Using a novel algorithm that allows clustering of gene transcripts according to expression kinetics and expression levels, we defined major waves of co-regulated genes. The initial overall decrease in gene expression was followed by the up-regulation of genes involved in lipid metabolism and myelination. Functional annotation of the down-regulated gene clusters identified transcripts involved in cell cycle regulation, transcription, and RNA processing. To define whether these genes were the targets of HDAC activity, we cultured rat OPCs in the presence of trichostatin A (TSA), an HDAC inhibitor previously shown to inhibit oligodendrocyte differentiation. By overlaying the defined oligodendrocyte transcriptome with the list of 'TSA sensitive' genes, we determined that a high percentage of 'TSA sensitive' genes are part of a normal program of oligodendrocyte differentiation. TSA treatment increased the expression of genes whose down-regulation occurs very early after induction of OPC differentiation, but did not affect the expression of genes with a slower kinetic. Among the increased 'TSA sensitive' genes we detected several transcription factors including Id2, Egr1, and Sox11, whose down-regulation is critical for OPC differentiation. Thus, HDAC target genes include clusters of co-regulated genes involved in transcriptional repression. These results support a de-repression model of oligodendrocyte lineage progression that relies on the concurrent down-regulation of several inhibitors of differentiation.
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Elucidating the Complex Interactions between Stress and Epileptogenic Pathways. Cardiovasc Psychiatry Neurol 2011; 2011:461263. [PMID: 21547249 PMCID: PMC3085328 DOI: 10.1155/2011/461263] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2010] [Accepted: 01/22/2011] [Indexed: 11/24/2022] Open
Abstract
Clinical and experimental data suggest that stress contributes to the pathology of epilepsy. We review mechanisms by which stress, primarily via stress hormones, may exacerbate epilepsy, focusing on the intersection between stress-induced pathways and the progression of pathological events that occur before, during, and after the onset of epileptogenesis. In addition to this temporal nuance, we discuss other complexities in stress-epilepsy interactions, including the role of blood-brain barrier dysfunction, neuron-glia interactions, and inflammatory/cytokine pathways that may be protective or damaging depending on context. We advocate the use of global analytical tools, such as microarray, in support of a shift away from a narrow focus on seizures and towards profiling the complex, early process of epileptogenesis, in which multiple pathways may interact to dictate the ultimate onset of chronic, recurring seizures.
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Joubert L, Foucault I, Sagot Y, Bernasconi L, Duval F, Alliod C, Frossard MJ, Pescini Gobert R, Curchod ML, Salvat C, Nichols A, Pouly S, Rommel C, Roach A, Hooft van Huijsduijnen R. Chemical inducers and transcriptional markers of oligodendrocyte differentiation. J Neurosci Res 2011; 88:2546-57. [PMID: 20544820 DOI: 10.1002/jnr.22434] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Oligodendrocytes generate and maintain myelin, which is essential for axonal function and protection of the mammalian central nervous system. To advance our molecular understanding of differentiation by these cells, we screened libraries of pharmacologically active compounds and identified inducers of differentiation of Oli-neu, a stable cell line of mouse oligodendrocyte precursors (OPCs). We identified four broad classes of inducers, namely, forskolin/cAMP (protein kinase A activators), steroids (glucocorticoids and retinoic acid), ErbB2 inhibitors, and nucleoside analogs, and confirmed the activity of these compounds on rat primary oligodendrocyte precursors and mixed cortical cultures. We also analyzed transcriptional responses in the chemically induced mouse and rat OPC differentiation processes and compared these with earlier studies. We confirm the view that ErbB2 is a natural signaling component that is required for OPC proliferation, whereas ErbB2 inhibition or genetic knockdown results in OPC differentiation.
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Persson AI, Petritsch C, Swartling FJ, Itsara M, Sim FJ, Auvergne R, Goldenberg DD, Vandenberg SR, Nguyen KN, Yakovenko S, Ayers-Ringler J, Nishiyama A, Stallcup WB, Berger MS, Bergers G, McKnight TR, Goldman SA, Weiss WA. Non-stem cell origin for oligodendroglioma. Cancer Cell 2010; 18:669-82. [PMID: 21156288 PMCID: PMC3031116 DOI: 10.1016/j.ccr.2010.10.033] [Citation(s) in RCA: 172] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Revised: 06/21/2010] [Accepted: 10/14/2010] [Indexed: 12/31/2022]
Abstract
Malignant astrocytic brain tumors are among the most lethal cancers. Quiescent and therapy-resistant neural stem cell (NSC)-like cells in astrocytomas are likely to contribute to poor outcome. Malignant oligodendroglial brain tumors, in contrast, are therapy sensitive. Using magnetic resonance imaging (MRI) and detailed developmental analyses, we demonstrated that murine oligodendroglioma cells show characteristics of oligodendrocyte progenitor cells (OPCs) and are therapy sensitive, and that OPC rather than NSC markers enriched for tumor formation. MRI of human oligodendroglioma also suggested a white matter (WM) origin, with markers for OPCs rather than NSCs similarly enriching for tumor formation. Our results suggest that oligodendroglioma cells show hallmarks of OPCs, and that a progenitor rather than a NSC origin underlies improved prognosis in patients with this tumor.
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Affiliation(s)
- Anders I. Persson
- Department of Neurology, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Claudia Petritsch
- Department of Neurological surgery and Brain Tumor Research Center, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Fredrik J. Swartling
- Department of Neurology, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Melissa Itsara
- Department of Neurology, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Fraser J. Sim
- Department of Neurology, University of Rochester, Rochester, NY, USA
| | - Romane Auvergne
- Department of Neurology, University of Rochester, Rochester, NY, USA
| | | | | | - Kim N. Nguyen
- Department of Neurology, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Stanislava Yakovenko
- Department of Neurology, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Jennifer Ayers-Ringler
- Department of Neurological surgery and Brain Tumor Research Center, University of California, San Francisco, CA, USA
| | - Akiko Nishiyama
- Department of Physiology and Neurobiology, University of Connecticut, Storrs, CT, USA
| | - William B. Stallcup
- Burnham Institute for Medical Research, Cancer Research Center, La Jolla, CA, USA
| | - Mitchel S. Berger
- Department of Neurological surgery and Brain Tumor Research Center, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Gabriele Bergers
- Department of Neurological surgery and Brain Tumor Research Center, University of California, San Francisco, CA, USA
- Department of Anatomy, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Tracy R. McKnight
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Steve A. Goldman
- Department of Neurology, University of Rochester, Rochester, NY, USA
| | - William A. Weiss
- Department of Neurology, University of California, San Francisco, CA, USA
- Department of Pediatrics, University of California, San Francisco, CA, USA
- Department of Neurological surgery and Brain Tumor Research Center, University of California, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
- Correspondence: , Fax: 415-476-0133, Phone: 415-502-1694
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Rivera FJ, Steffenhagen C, Kremer D, Kandasamy M, Sandner B, Couillard-Despres S, Weidner N, Küry P, Aigner L. Deciphering the oligodendrogenic program of neural progenitors: cell intrinsic and extrinsic regulators. Stem Cells Dev 2010; 19:595-606. [PMID: 19938982 DOI: 10.1089/scd.2009.0293] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
In the developing and adult CNS, neural stem/progenitor cells (NSPCs) and oligodendroglial progenitor cells (OPCs) follow an oligodendrogenic process with the aim of myelinating axons. This process is to a high degree regulated by an oligodendrogenic program (OPr) composed of intrinsic and extrinsic factors that modulate the different steps required for NSPCs to differentiate into myelinating oligodendrocytes. Even though NSPCs and OPCs are present in the diseased CNS and have the capacity to generate oligodendrocytes, sparse remyelination of axons constitutes a major constraint in therapies toward multiple sclerosis (MS) and spinal cord injury (SCI). Lack of pro-oligodendrogenic factors and presence of anti-oligodendrogenic activities are thought to be the main reasons for this limitation. Thus, molecular and cellular strategies aiming at remyelination and at targeting such pro- and anti-oligodendrogenic mechanisms are currently under investigation. The present review summarizes the current knowledge on the OPr; it implements our own findings on mesenchymal stem cell-derived pro-oligodendroglial factors and on the role of p57/kip2 in oligodendroglial differentiation. Moreover, it describes molecular and cellular approaches for the development of future therapies toward remyelination.
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Affiliation(s)
- Francisco J Rivera
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria
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Niu J, Mei F, Li N, Wang H, Li X, Kong J, Xiao L. Haloperidol promotes proliferation but inhibits differentiation in rat oligodendrocyte progenitor cell culturesThis paper is one of a selection of papers published in this special issue entitled “Second International Symposium on Recent Advances in Basic, Clinical, and Social Medicine” and has undergone the Journal's usual peer review process. Biochem Cell Biol 2010; 88:611-20. [DOI: 10.1139/o09-178] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Haloperidol is a commonly used, typical, antipsychotic drug (APD) that acts strongly against positive symptoms, but has fewer therapeutic effects on, or may even aggravate, negative symptoms and cognitive deficits in patients with schizophrenia. Loss of oligodendrocytes has been suggested as a factor associated with the negative symptoms of schizophrenia. Recent study shows that chronic haloperidol treatment induced down-regulation of oligodendrocyte-related genes in certain brain regions of mouse. In this study, we used primary oligodendrocyte progenitor cell cultures from 1- to 3-day-postnatal rats to investigate the direct effects of haloperidol on the proliferation and differentiation of oligodendrocyte progenitor cells. Our results showed that (i) haloperidol (0–10.0 µmol·L–1) facilitated the proliferation of oligodendrocyte progenitor cells, (ii) chronic haloperidol (0.5 µmol·L–1) treatment decreased the number of myelin basic protein positive oligodendrocytes and reduced the oligodendrocytes cells possessing myelin-like membranes, resulting in inhibition of the terminal differentiation of oligodendrocytes, and (iii) D3 receptor mRNA was detected in oligodendrocyte progenitor cells, and haloperidol treatment induced a down-regulation of D3 receptor mRNA. These results suggest that the typical antipsychotic drug haloperidol affects the development of oligodendrocyte progenitor cells, and that D3 receptor down regulation may be involved. Our observations provide new insight into possible cellular mechanisms responsible for the side effects of typical antipsychotic drugs and support the concept that abnormality of oligodendrocytes may be involved in the pathogenesis of schizophrenia.
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Affiliation(s)
- Jianqin Niu
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
- Department of Psychiatry, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Feng Mei
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
- Department of Psychiatry, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Nan Li
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
- Department of Psychiatry, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Hanzhi Wang
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
- Department of Psychiatry, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Xinmin Li
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
- Department of Psychiatry, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Jiming Kong
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
- Department of Psychiatry, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Lan Xiao
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
- Department of Psychiatry, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
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Alworth SV, Watanabe H, Lee JSJ. Teachable, high-content analytics for live-cell, phase contrast movies. ACTA ACUST UNITED AC 2010; 15:968-77. [PMID: 20639505 DOI: 10.1177/1087057110373546] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
CL-Quant is a new solution platform for broad, high-content, live-cell image analysis. Powered by novel machine learning technologies and teach-by-example interfaces, CL-Quant provides a platform for the rapid development and application of scalable, high-performance, and fully automated analytics for a broad range of live-cell microscopy imaging applications, including label-free phase contrast imaging. The authors used CL-Quant to teach off-the-shelf universal analytics, called standard recipes, for cell proliferation, wound healing, cell counting, and cell motility assays using phase contrast movies collected on the BioStation CT and BioStation IM platforms. Similar to application modules, standard recipes are intended to work robustly across a wide range of imaging conditions without requiring customization by the end user. The authors validated the performance of the standard recipes by comparing their performance with truth created manually, or by custom analytics optimized for each individual movie (and therefore yielding the best possible result for the image), and validated by independent review. The validation data show that the standard recipes' performance is comparable with the validated truth with low variation. The data validate that the CL-Quant standard recipes can provide robust results without customization for live-cell assays in broad cell types and laboratory settings.
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The multiple roles of myelin protein genes during the development of the oligodendrocyte. ASN Neuro 2010; 2:e00027. [PMID: 20017732 PMCID: PMC2814326 DOI: 10.1042/an20090051] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Revised: 12/14/2009] [Accepted: 12/17/2009] [Indexed: 11/22/2022] Open
Abstract
It has become clear that the products of several of the earliest identified myelin protein genes perform functions that extend beyond the myelin sheath. Interestingly, these myelin proteins, which comprise proteolipid protein, 2′,3′-cyclic nucleotide 3′-phosphodiesterase and the classic and golli MBPs (myelin basic proteins), play important roles during different stages of oligodendroglial development. These non-myelin-related functions are varied and include roles in the regulation of process outgrowth, migration, RNA transport, oligodendrocyte survival and ion channel modulation. However, despite the wide variety of cellular functions performed by the different myelin genes, the route by which they achieve these many functions seems to converge upon a common mechanism involving Ca2+ regulation, cytoskeletal rearrangements and signal transduction. In the present review, the newly emerging functions of these myelin proteins will be described, and these will then be discussed in the context of their contribution to oligodendroglial development.
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Xue H, Wu S, Papadeas ST, Spusta S, Swistowska AM, MacArthur CC, Mattson MP, Maragakis NJ, Capecchi MR, Rao MS, Zeng X, Liu Y. A targeted neuroglial reporter line generated by homologous recombination in human embryonic stem cells. Stem Cells 2010; 27:1836-46. [PMID: 19544414 DOI: 10.1002/stem.129] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this study, we targeted Olig2, a basic helix-loop-helix transcription factor that plays an important role in motoneuron and oligodendrocyte development, in human embryonic stem cell (hESC) line BG01 by homologous recombination. One allele of Olig2 locus was replaced by a green fluorescent protein (GFP) cassette with a targeting efficiency of 5.7%. Targeted clone R-Olig2 (like the other clones) retained pluripotency, typical hESC morphology, and a normal parental karyotype 46,XY. Most importantly, GFP expression recapitulated endogenous Olig2 expression when R-Olig2 was induced by sonic hedgehog and retinoic acid, and GFP-positive cells could be purified by fluorescence-activated cell sorting. Consistent with previous reports on rodents, early GFP-expressing cells appeared biased to a neuronal fate, whereas late GFP-expressing cells appeared biased to an oligodendrocytic fate. This was corroborated by myoblast coculture, transplantation into the rat spinal cords, and whole genome expression profiling. The present work reports an hESC reporter line generated by homologous recombination targeting a neural lineage-specific gene, which can be differentiated and sorted to obtain pure neural progenitor populations.
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Affiliation(s)
- Haipeng Xue
- Primary and Stem Cell Systems, Life Technologies Corporation, Carlsbad, California 92008, USA
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