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Bai X, Zhao N, Koupourtidou C, Fang LP, Schwarz V, Caudal LC, Zhao R, Hirrlinger J, Walz W, Bian S, Huang W, Ninkovic J, Kirchhoff F, Scheller A. In the mouse cortex, oligodendrocytes regain a plastic capacity, transforming into astrocytes after acute injury. Dev Cell 2023:S1534-5807(23)00192-2. [PMID: 37220747 DOI: 10.1016/j.devcel.2023.04.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 02/16/2023] [Accepted: 04/25/2023] [Indexed: 05/25/2023]
Abstract
Acute brain injuries evoke various response cascades directing the formation of the glial scar. Here, we report that acute lesions associated with hemorrhagic injuries trigger a re-programming of oligodendrocytes. Single-cell RNA sequencing highlighted a subpopulation of oligodendrocytes activating astroglial genes after acute brain injuries. By using PLP-DsRed1/GFAP-EGFP and PLP-EGFPmem/GFAP-mRFP1 transgenic mice, we visualized this population of oligodendrocytes that we termed AO cells based on their concomitant activity of astro- and oligodendroglial genes. By fate mapping using PLP- and GFAP-split Cre complementation and repeated chronic in vivo imaging with two-photon laser-scanning microscopy, we observed the conversion of oligodendrocytes into astrocytes via the AO cell stage. Such conversion was promoted by local injection of IL-6 and was diminished by IL-6 receptor-neutralizing antibody as well as by inhibiting microglial activation with minocycline. In summary, our findings highlight the plastic potential of oligodendrocytes in acute brain trauma due to microglia-derived IL-6.
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Affiliation(s)
- Xianshu Bai
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany.
| | - Na Zhao
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Christina Koupourtidou
- Department of Cell Biology and Anatomy, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany; Institute of Stem Cell Research, Helmholtz Zentrum Munich, 85764 Neuherberg-Munich, Germany
| | - Li-Pao Fang
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Veronika Schwarz
- Department of Cell Biology and Anatomy, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany; Institute of Stem Cell Research, Helmholtz Zentrum Munich, 85764 Neuherberg-Munich, Germany
| | - Laura C Caudal
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Renping Zhao
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Johannes Hirrlinger
- Carl-Ludwig-Institute for Physiology, Leipzig University, 04103 Leipzig, Germany; Department of Neurogenetics, Max-Planck-Institute for Multidisciplinary Sciences, 37075 Göttingen, Germany
| | - Wolfgang Walz
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany; Department of Psychiatry, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Shan Bian
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, 200092 Shanghai, China; Frontier Science Center for Stem Cell Research, Tongji University, 200092 Shanghai, China
| | - Wenhui Huang
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany
| | - Jovica Ninkovic
- Department of Cell Biology and Anatomy, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany; Institute of Stem Cell Research, Helmholtz Zentrum Munich, 85764 Neuherberg-Munich, Germany
| | - Frank Kirchhoff
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany; Experimental Research Center for Normal and Pathological Aging, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Anja Scheller
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66421 Homburg, Germany.
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Huse JT, Snuderl M, Jones DTW, Brathwaite CD, Altman N, Lavi E, Saffery R, Sexton-Oates A, Blumcke I, Capper D, Karajannis MA, Benayed R, Chavez L, Thomas C, Serrano J, Borsu L, Ladanyi M, Rosenblum MK. Polymorphous low-grade neuroepithelial tumor of the young (PLNTY): an epileptogenic neoplasm with oligodendroglioma-like components, aberrant CD34 expression, and genetic alterations involving the MAP kinase pathway. Acta Neuropathol 2017; 133:417-429. [PMID: 27812792 PMCID: PMC5325850 DOI: 10.1007/s00401-016-1639-9] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/25/2016] [Accepted: 10/25/2016] [Indexed: 02/07/2023]
Abstract
Epileptogenic tumors affecting children and young adults are a morphologically diverse collection of neuroepithelial neoplasms that, as a group, exhibit varying levels of glial and/or neuronal differentiation. Recent advances in molecular profiling technology, including comprehensive DNA sequencing and methylation analysis, have enabled the application of more precise and biologically relevant classification schemes to these tumors. In this report, we describe a morphologically and molecularly distinct epileptogenic neoplasm, the polymorphous low-grade neuroepithelial tumor of the young (PLNTY), which likely accounts for a sizable portion of oligodendroglioma-like tumors affecting the pediatric population. Characteristic microscopic findings most notably include infiltrative growth, the invariable presence of oligodendroglioma-like cellular components, and intense immunolabeling for cluster of differentiation 34 (CD34). Moreover, integrative molecular profiling reveals a distinct DNA methylation signature for PLNTYs, along with frequent genetic abnormalities involving either B-Raf proto-oncogene (BRAF) or fibroblast growth factor receptors 2 and 3 (FGFR2, FGFR3). These findings suggest that PLNTY represents a distinct biological entity within the larger spectrum of pediatric, low-grade neuroepithelial tumors.
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Affiliation(s)
- Jason T Huse
- Departments of Pathology and Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, 2130 W Holcombe Blvd, LSP9.4009, Houston, TX, 77030, USA.
| | - Matija Snuderl
- Department of Pathology, New York University Langone Medical Center, New York, NY, 10016, USA
| | - David T W Jones
- Division of Pediatric Neuro-oncology, German Cancer Research Center (DFKZ), 69120, Heidelberg, Germany
| | - Carole D Brathwaite
- Department of Pathology, Nicklaus Children's Hospital, Miami, FL, 33155, USA
| | - Nolan Altman
- Department of Radiology, Nicklaus Children's Hospital, Miami, FL, 33155, USA
| | - Ehud Lavi
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, 10065, USA
| | - Richard Saffery
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, VIC, 3052, Australia
| | - Alexandra Sexton-Oates
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, VIC, 3052, Australia
| | - Ingmar Blumcke
- Institute of Neuropathology, University of Erlangen, 91054, Erlangen, Germany
| | - David Capper
- Department of Pathology, University of Heidelberg, 69120, Heidelberg, Germany
| | - Matthias A Karajannis
- Department of Pediatrics, New York University Langone Medical Center, New York, NY, 10016, USA
- Department of Ototlaryngology, New York University Langone Medical Center, New York, NY, 10016, USA
| | - Ryma Benayed
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, 408 E 69th St. (Z564), New York, NY, 10065, USA
| | - Lukas Chavez
- Division of Pediatric Neuro-oncology, German Cancer Research Center (DFKZ), 69120, Heidelberg, Germany
| | - Cheddhi Thomas
- Department of Pathology, New York University Langone Medical Center, New York, NY, 10016, USA
| | - Jonathan Serrano
- Department of Pathology, New York University Langone Medical Center, New York, NY, 10016, USA
| | - Laetitia Borsu
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, 408 E 69th St. (Z564), New York, NY, 10065, USA
| | - Marc Ladanyi
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, 408 E 69th St. (Z564), New York, NY, 10065, USA
| | - Marc K Rosenblum
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, 408 E 69th St. (Z564), New York, NY, 10065, USA
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Vital AL, Tabernero MD, Castrillo A, Rebelo O, Tão H, Gomes F, Nieto AB, Resende Oliveira C, Lopes MC, Orfao A. Gene expression profiles of human glioblastomas are associated with both tumor cytogenetics and histopathology. Neuro Oncol 2010; 12:991-1003. [PMID: 20484145 DOI: 10.1093/neuonc/noq050] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Despite the increasing knowledge about the genetic alterations and molecular pathways involved in gliomas, few studies have investigated the association between the gene expression profiles (GEP) and both cytogenetics and histopathology of gliomas. Here, we analyzed the GEP (U133Plus2.0 chip) of 40 gliomas (35 astrocytic tumors, 3 oligodendrogliomas, and 2 mixed tumors) and their association with tumor cytogenetics and histopathology. Unsupervised and supervised analyses showed significantly different GEP in low- vs high-grade gliomas, the most discriminating genes including genes involved in the regulation of cell proliferation, apoptosis, DNA repair, and signal transduction. In turn, among glioblastoma multiforme (GBM), 3 subgroups of tumors were identified according to their GEP, which were closely associated with the cytogenetic profile of their ancestral tumor cell clones: (i) EGFR amplification, (ii) isolated trisomy 7, and (iii) more complex karyotypes. In summary, our results show a clear association between the GEP of gliomas and tumor histopathology; additionally, among grade IV astrocytoma, GEP are significantly associated with the cytogenetic profile of the ancestral tumor cell clone. Further studies in larger series of patients are necessary to confirm our observations.
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Affiliation(s)
- Ana Luísa Vital
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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