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Park Y, KC N, Paneque A, Cole PD. Tau, Glial Fibrillary Acidic Protein, and Neurofilament Light Chain as Brain Protein Biomarkers in Cerebrospinal Fluid and Blood for Diagnosis of Neurobiological Diseases. Int J Mol Sci 2024; 25:6295. [PMID: 38928000 PMCID: PMC11204270 DOI: 10.3390/ijms25126295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 06/01/2024] [Indexed: 06/28/2024] Open
Abstract
Neurological damage is the pathological substrate of permanent disability in various neurodegenerative disorders. Early detection of this damage, including its identification and quantification, is critical to preventing the disease's progression in the brain. Tau, glial fibrillary acidic protein (GFAP), and neurofilament light chain (NfL), as brain protein biomarkers, have the potential to improve diagnostic accuracy, disease monitoring, prognostic assessment, and treatment efficacy. These biomarkers are released into the cerebrospinal fluid (CSF) and blood proportionally to the degree of neuron and astrocyte damage in different neurological disorders, including stroke, traumatic brain injury, multiple sclerosis, neurodegenerative dementia, and Parkinson's disease. Here, we review how Tau, GFAP, and NfL biomarkers are detected in CSF and blood as crucial diagnostic tools, as well as the levels of these biomarkers used for differentiating a range of neurological diseases and monitoring disease progression. We also discuss a biosensor approach that allows for the real-time detection of multiple biomarkers in various neurodegenerative diseases. This combined detection system of brain protein biomarkers holds significant promise for developing more specific and accurate clinical tools that can identify the type and stage of human neurological diseases with greater precision.
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Affiliation(s)
- Yongkyu Park
- Rutgers Cancer Institute of New Jersey, 195 Little Albany St, New Brunswick, NJ 08901, USA; (N.K.); (A.P.)
| | - Nirajan KC
- Rutgers Cancer Institute of New Jersey, 195 Little Albany St, New Brunswick, NJ 08901, USA; (N.K.); (A.P.)
| | - Alysta Paneque
- Rutgers Cancer Institute of New Jersey, 195 Little Albany St, New Brunswick, NJ 08901, USA; (N.K.); (A.P.)
- Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901, USA
| | - Peter D. Cole
- Rutgers Cancer Institute of New Jersey, 195 Little Albany St, New Brunswick, NJ 08901, USA; (N.K.); (A.P.)
- Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901, USA
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2
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Chernov AN, Kim AV, Skliar SS, Fedorov EV, Tsapieva AN, Filatenkova TA, Chutko AL, Matsko MV, Galimova ES, Shamova OV. Expression of molecular markers and synergistic anticancer effects of chemotherapy with antimicrobial peptides on glioblastoma cells. Cancer Chemother Pharmacol 2024; 93:455-469. [PMID: 38280033 DOI: 10.1007/s00280-023-04622-8] [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: 06/05/2023] [Accepted: 11/14/2023] [Indexed: 01/29/2024]
Abstract
OBJECTIVE Glioblastoma multiforme (GBM) is the most aggressive and fatal malignant primary brain tumor. The enhancement of the survival rate for glioma patients remains limited, even with the utilization of a combined treatment approach involving surgery, radiotherapy, and chemotherapy. This study was designed to assess the expression of IDH1, TP53, EGFR, Ki-67, GFAP, H3K27M, MGMT, VEGF, NOS, CD99, and ATRX in glioblastoma tissue from 11 patients. We investigated the anticancer impact and combined effects of cathelicidin (LL-37), protegrin-1 (PG-1), with chemotherapy-temozolomide (TMZ), doxorubicin (DOX), carboplatin (CB), cisplatin (CPL), and etoposide (ETO) in primary GBM cells. In addition, we examined the effect of LL-37, PG-1 on normal human fibroblasts and in the C6/Wistar rat intracerebral glioma model. METHODS For this study, 11 cases of glioblastoma were evaluated immunohistochemically for IDH1, TP53, EGFR, Ki-67, GFAP, H3K27M, MGMT, VEGF, NOS, CD99, and ATRX. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was used to study cells viability and to determine cytotoxic effects of LL-37, PG-1 and their combination with chemotherapy in primary GBM cells. Synergism or antagonism was determined using combination index (CI) method. Finally, we established C6 glioblastoma model in Wistar rats to investigate the antitumor activity. RESULTS Peptides showed a strong cytotoxic effect on primary GBM cells in the MTT test (IC50 2-16 and 1-32 μM) compared to chemotherapy. The dual-drug combinations of LL-37 + DOX, LL-37 + CB (CI 0.46-0.75) and PG-1 + DOX, PG-1 + CB, PG-1 + TMZ (CI 0.11-0.77), demonstrated a synergism in primary GBM cells. In rat C6 intracerebral GBM model, survival of rats in experimental group (66.75 ± 12.6 days) was prolonged compared with that in control cohort (26.2 ± 2.66 days, p = 0.0008). After LL-37 treatment, experimental group rats showed significantly lower tumor volumes (31.00 ± 8.8 mm3) and weight (49.4 ± 13.3 mg) compared with control group rats (153.8 ± 43.53 mg, p = 0.038; 82.50 ± 7.60 mm3, respectively). CONCLUSIONS The combination of antimicrobial peptides and chemical drugs enhances the cytotoxicity of chemotherapy and exerts synergistic antitumor effects in primary GBM cells. Moreover, in vivo study provided the first evidence that LL-37 could effectively inhibit brain tumor growth in rat C6 intracerebral GBM model. These results suggested a significant strategy for proposing a promising therapy for the treatment of GBM.
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Affiliation(s)
| | - Alexandr V Kim
- Children's Neurosurgical Department No.7, Almazov Medical Research Centre, 197341, Saint Petersburg, Russia
| | - Sofia S Skliar
- Polenov Neurosurgical Institute, Almazov National Medical Research Centre, 197341, Saint Petersburg, Russia
| | - Evgeniy V Fedorov
- Children's Neurosurgical Department No.7, Almazov Medical Research Centre, 197341, Saint Petersburg, Russia
| | - Anna N Tsapieva
- Institute of Experimental Medicine, Saint Petersburg, 197376, Russia
| | | | - Aleksei L Chutko
- Institute of Experimental Medicine, Saint Petersburg, 197376, Russia
| | - Marina V Matsko
- Napalkov State Budgetary Healthcare Institution, Saint Petersburg Clinical Scientific and Practical Center for Specialised Types of Medical Care (Oncological), Saint Petersburg, 197758, Russia
| | - Elvira S Galimova
- Institute of Experimental Medicine, Saint Petersburg, 197376, Russia.
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, 194223, Russia.
| | - Olga V Shamova
- Institute of Experimental Medicine, Saint Petersburg, 197376, Russia
- Saint Petersburg State University, Saint Petersburg, 199034, Russia
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Rozumenko V, Liubich L, Pedachenko E, Staino L, Egorova D, Kot L, Malysheva T. SYSTEMIC INFLAMMATORY INDICES IN PATIENTS WITH MALIGNANT GLIOMAS AND EFFECTS OF PLATELET SECRETOME IN VITRO. Exp Oncol 2024; 45:409-420. [PMID: 38328849 DOI: 10.15407/exp-oncology.2023.04.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Indexed: 02/09/2024]
Abstract
BACKGROUND To date, no significant clinical progress has been achieved in the treatment of brain malignant gliomas (MG), and the active search for non-invasive circulating biomarkers continues. The prognostic significance of the ratio of the main peripheral blood cell populations of patients with MG is evaluated. Considerable attention is paid to the secretome of platelets (Pt) of peripheral blood. AIM To evaluate the indicators of the peripheral blood cell population ratios in patients with brain MG and to study the influence of the secretome of Pt (SPt) of the peripheral blood of patients with brain MG in cell cultures in vitro. MATERIALS AND METHODS We studied samples of peripheral blood from patients with glioma CNS WHO grade G2 (n = 5), G3 (n = 12), and G4 (n = 20). The peripheral blood cell counts were analyzed in the preoperative period on an automatic hematology analyzer. The in vitro study of SPt was performed on the U251 human glioblastoma cell line cultured with SPt from MG patients or SPt pre-incubated with anti-TGF-β1 antibody. Cell cultures were observed for 72 h, and mitotic index (MI) was calculated. RESULTS In MG patients, the count of peripheral blood leukocytes and neutrophils increased (p < 0.05). The neutrophil-to-lymphocyte ratio (NLR) and systemic immune-inflammation index (SII) increased by 2-3 times compared to control. Nevertheless, correlation analysis did not reveal significant relationships between quantitative indicators of peripheral blood cells and the tumor malignancy degree in MG patients. The MI in U251 cells increased under the influence of SPt from patients with MG (p < 0.021), correlated with the tumor degree of malignancy (r = 0.246, p = 0.014). Pre-incubation of SPt with anti-TGF-β1 antibody tends to neutralize this promitotic effect. CONCLUSION In MG patients, the integral indicators of NLR and SII increased but no significant relationship with the degree of tumor malignancy was found. In U251 cells, promitotic effects of SPt of MG patients partially decreased by anti-TGF-β1 antibody.
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Affiliation(s)
- V Rozumenko
- State Institution "Romodanov Neurosurgery Institute, National Academy of Medical Sciences of Ukraine", Kyiv, Ukraine
| | - L Liubich
- State Institution "Romodanov Neurosurgery Institute, National Academy of Medical Sciences of Ukraine", Kyiv, Ukraine
| | - E Pedachenko
- State Institution "Romodanov Neurosurgery Institute, National Academy of Medical Sciences of Ukraine", Kyiv, Ukraine
| | - L Staino
- State Institution "Romodanov Neurosurgery Institute, National Academy of Medical Sciences of Ukraine", Kyiv, Ukraine
| | - D Egorova
- State Institution "Romodanov Neurosurgery Institute, National Academy of Medical Sciences of Ukraine", Kyiv, Ukraine
| | - L Kot
- State Institution "Romodanov Neurosurgery Institute, National Academy of Medical Sciences of Ukraine", Kyiv, Ukraine
| | - T Malysheva
- State Institution "Romodanov Neurosurgery Institute, National Academy of Medical Sciences of Ukraine", Kyiv, Ukraine
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4
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Valdes PA, Yu CC(J, Aronson J, Ghosh D, Zhao Y, An B, Bernstock JD, Bhere D, Felicella MM, Viapiano MS, Shah K, Chiocca EA, Boyden ES. Improved immunostaining of nanostructures and cells in human brain specimens through expansion-mediated protein decrowding. Sci Transl Med 2024; 16:eabo0049. [PMID: 38295184 PMCID: PMC10911838 DOI: 10.1126/scitranslmed.abo0049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 01/10/2024] [Indexed: 02/02/2024]
Abstract
Proteins are densely packed in cells and tissues, where they form complex nanostructures. Expansion microscopy (ExM) variants have been used to separate proteins from each other in preserved biospecimens, improving antibody access to epitopes. Here, we present an ExM variant, decrowding expansion pathology (dExPath), that can expand proteins away from each other in human brain pathology specimens, including formalin-fixed paraffin-embedded (FFPE) clinical specimens. Immunostaining of dExPath-expanded specimens reveals, with nanoscale precision, previously unobserved cellular structures, as well as more continuous patterns of staining. This enhanced molecular staining results in observation of previously invisible disease marker-positive cell populations in human glioma specimens, with potential implications for tumor aggressiveness. dExPath results in improved fluorescence signals even as it eliminates lipofuscin-associated autofluorescence. Thus, this form of expansion-mediated protein decrowding may, through improved epitope access for antibodies, render immunohistochemistry more powerful in clinical science and, perhaps, diagnosis.
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Affiliation(s)
- Pablo A. Valdes
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, 77555
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA, 02115
- Media Arts and Sciences, MIT, Cambridge, MA, USA, 02115
| | - Chih-Chieh (Jay) Yu
- Media Arts and Sciences, MIT, Cambridge, MA, USA, 02115
- Department of Biological Engineering, MIT, MA, USA, 02139
- McGovern Institute for Brain Research, MIT, Cambridge, MA, USA, 02139
- RIKEN Center for Brain Science, Saitama, Japan, 351-0198
| | - Jenna Aronson
- Media Arts and Sciences, MIT, Cambridge, MA, USA, 02115
- McGovern Institute for Brain Research, MIT, Cambridge, MA, USA, 02139
- RIKEN Center for Brain Science, Saitama, Japan, 351-0198
| | - Debarati Ghosh
- McGovern Institute for Brain Research, MIT, Cambridge, MA, USA, 02139
- Department of Brain and Cognitive Sciences, MIT, Cambridge, MA, USA, 02139
| | - Yongxin Zhao
- Media Arts and Sciences, MIT, Cambridge, MA, USA, 02115
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, USA, 15213
| | - Bobae An
- Media Arts and Sciences, MIT, Cambridge, MA, USA, 02115
- McGovern Institute for Brain Research, MIT, Cambridge, MA, USA, 02139
| | - Joshua D. Bernstock
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA, 02115
- Koch Institute, MIT, Cambridge, MA, USA, 02139
| | - Deepak Bhere
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA, 02115
- Department of Pathology, Microbiology and Immunology, School of Medicine Columbia, University of South Carolina, Columbia, SC, USA, 29209
- Center for Stem Cell and Translational Immunotherapy, Harvard Medical School/Brigham and Women’s Hospital, Boston, MA, USA, 02115
| | - Michelle M. Felicella
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA, 77555
| | - Mariano S. Viapiano
- Department of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, USA, 13210
| | - Khalid Shah
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA, 02115
- Center for Stem Cell and Translational Immunotherapy, Harvard Medical School/Brigham and Women’s Hospital, Boston, MA, USA, 02115
| | - E. Antonio Chiocca
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA, 02115
| | - Edward S. Boyden
- Media Arts and Sciences, MIT, Cambridge, MA, USA, 02115
- Department of Biological Engineering, MIT, MA, USA, 02139
- McGovern Institute for Brain Research, MIT, Cambridge, MA, USA, 02139
- Department of Brain and Cognitive Sciences, MIT, Cambridge, MA, USA, 02139
- Koch Institute, MIT, Cambridge, MA, USA, 02139
- MIT Center for Neurobiological Engineering and K. Lisa Yang Center for Bionics, MIT, Cambridge, MA, USA, 02139
- Howard Hughes Medical Institute, Cambridge, MA, USA, 02139
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5
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Louati K, Maalej A, Kolsi F, Kallel R, Gdoura Y, Borni M, Hakim LS, Zribi R, Choura S, Sayadi S, Chamkha M, Mnif B, Khemakhem Z, Boudawara TS, Boudawara MZ, Safta F. Differential Proteome Profiling Analysis under Pesticide Stress by the Use of a Nano-UHPLC-MS/MS Untargeted Proteomic-Based Approach on a 3D-Developed Neurospheroid Model: Identification of Protein Interactions, Prognostic Biomarkers, and Potential Therapeutic Targets in Human IDH Mutant High-Grade Gliomas. J Proteome Res 2023; 22:3534-3558. [PMID: 37651309 PMCID: PMC10629271 DOI: 10.1021/acs.jproteome.3c00395] [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: 07/03/2023] [Indexed: 09/02/2023]
Abstract
High-grade gliomas represent the most common group of infiltrative primary brain tumors in adults associated with high invasiveness, agressivity, and resistance to therapy, which highlights the need to develop potent drugs with novel mechanisms of action. The aim of this study is to reveal changes in proteome profiles under stressful conditions to identify prognostic biomarkers and altered apoptogenic pathways involved in the anticancer action of human isocitrate dehydrogenase (IDH) mutant high-grade gliomas. Our protocol consists first of a 3D in vitro developing neurospheroid model and then treatment by a pesticide mixture at relevant concentrations. Furthermore, we adopted an untargeted proteomic-based approach with high-resolution mass spectrometry for a comparative analysis of the differentially expressed proteins between treated and nontreated spheroids. Our analysis revealed that the majority of altered proteins were key members in glioma pathogenesis, implicated in the cellular metabolism, biological regulation, binding, and catalytic and structural activity and linked to many cascading regulatory pathways. Our finding revealed that grade-IV astrocytomas promote the downstream of the mitogen-activated-protein-kinases/extracellular-signal-regulated kinase (MAPK1/ERK2) pathway involving massive calcium influx. The gonadotrophin-releasing-hormone signaling enhances MAKP activity and may serve as a negative feedback compensating regulator. Thus, our study can pave the way for effective new therapeutic and diagnostic strategies to improve the overall survival.
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Affiliation(s)
- Kaouthar Louati
- Laboratory
of Pharmacology, Analytics and Galenic Drug Development- LR12ES09,
Faculty of Pharmacy, University of Monastir, Road Avicenne, 5000 Monastir, Tunisia
| | - Amina Maalej
- Laboratory
of Environmental Bioprocesses, Centre of
Biotechnology of Sfax, Road of Sidi-Mansour, P.O. Box 1177, 3018 Sfax, Tunisia
| | - Fatma Kolsi
- Department
of Neurosurgery, Habib Bourguiba University
Hospital, Road El Ain
km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
- Faculty of
Medicine, University of Sfax, Avenue of Majida Boulila, 3029 Sfax, Tunisia
| | - Rim Kallel
- Laboratory
of Pathological Anatomy and Cytology, Habib
Bourguiba University Hospital, Road El Ain km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
- Faculty of
Medicine, University of Sfax, Avenue of Majida Boulila, 3029 Sfax, Tunisia
| | - Yassine Gdoura
- Department
of Neurosurgery, Habib Bourguiba University
Hospital, Road El Ain
km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
- Faculty of
Medicine, University of Sfax, Avenue of Majida Boulila, 3029 Sfax, Tunisia
| | - Mahdi Borni
- Department
of Neurosurgery, Habib Bourguiba University
Hospital, Road El Ain
km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
- Faculty of
Medicine, University of Sfax, Avenue of Majida Boulila, 3029 Sfax, Tunisia
| | - Leila Sellami Hakim
- Laboratory
of Pathological Anatomy and Cytology, Habib
Bourguiba University Hospital, Road El Ain km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
| | - Rania Zribi
- Higher Institute
of Applied Studies to Humanities of Tunis (ISEAHT), University of Tunis, 11 Road of Jebel Lakdhar, 1005 Tunis, Tunisia
| | - Sirine Choura
- Laboratory
of Environmental Bioprocesses, Centre of
Biotechnology of Sfax, Road of Sidi-Mansour, P.O. Box 1177, 3018 Sfax, Tunisia
| | - Sami Sayadi
- Biotechnology
Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713 Doha, Qatar
| | - Mohamed Chamkha
- Laboratory
of Environmental Bioprocesses, Centre of
Biotechnology of Sfax, Road of Sidi-Mansour, P.O. Box 1177, 3018 Sfax, Tunisia
| | - Basma Mnif
- Department
of Bacteriology, Habib Bourguiba University
Hospital, Road El Ain
km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
- Faculty of
Medicine, University of Sfax, Avenue of Majida Boulila, 3029 Sfax, Tunisia
| | - Zouheir Khemakhem
- Legal Medicine
Department, Habib Bourguiba University Hospital, Road El Ain km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
- Faculty of
Medicine, University of Sfax, Avenue of Majida Boulila, 3029 Sfax, Tunisia
| | - Tahya Sellami Boudawara
- Laboratory
of Pathological Anatomy and Cytology, Habib
Bourguiba University Hospital, Road El Ain km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
- Faculty of
Medicine, University of Sfax, Avenue of Majida Boulila, 3029 Sfax, Tunisia
| | - Mohamed Zaher Boudawara
- Department
of Neurosurgery, Habib Bourguiba University
Hospital, Road El Ain
km 1.5, Avenue of Ferdaous, 3089 Sfax, Tunisia
- Faculty of
Medicine, University of Sfax, Avenue of Majida Boulila, 3029 Sfax, Tunisia
| | - Fathi Safta
- Laboratory
of Pharmacology, Analytics and Galenic Drug Development- LR12ES09,
Faculty of Pharmacy, University of Monastir, Road Avicenne, 5000 Monastir, Tunisia
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6
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Radu R, Petrescu GED, Gorgan RM, Brehar FM. GFAPδ: A Promising Biomarker and Therapeutic Target in Glioblastoma. Front Oncol 2022; 12:859247. [PMID: 35372061 PMCID: PMC8971704 DOI: 10.3389/fonc.2022.859247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 02/24/2022] [Indexed: 12/02/2022] Open
Abstract
GFAPδ, the delta isoform of the glial fibrillary acidic protein, is mainly expressed in the subventricular zone of the brain, together with other neural stem cell markers like nestin. The authors of this paper were among the first that described in detail the expression of GFAPδ and its correlation with malignancy and invasiveness in cerebral astrocytoma. Later, several papers confirmed these findings, showing that the alternative splice variant GFAPδ is overexpressed in glioblastoma (CNS WHO grade 4) compared with lower grade gliomas. Other studies suggested that a high GFAPδ/α ratio is associated with a more malignant and invasive behavior of glioma cells. Moreover, the changing of GFAPδ/α ratio affects the expression of high-malignant genes. It is now suggested that discriminating between predominant GFAP isoforms, GFAPδ or GFAPα, is useful for assessing the malignancy state of astrocytoma, and may even contribute to the classification of gliomas. Therefore, the purpose of this paper is to review the literature with emphasize on the role of GFAPδ as a potential biomarker, and as a possible therapeutic target in glioblastoma.
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Affiliation(s)
- Roxana Radu
- Department of Neurosurgery, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Department of Neurosurgery, Bagdasar-Arseni Clinical Emergency Hospital, Bucharest, Romania
| | - George E. D. Petrescu
- Department of Neurosurgery, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Department of Neurosurgery, Bagdasar-Arseni Clinical Emergency Hospital, Bucharest, Romania
- *Correspondence: George E. D. Petrescu,
| | - Radu M. Gorgan
- Department of Neurosurgery, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Department of Neurosurgery, Bagdasar-Arseni Clinical Emergency Hospital, Bucharest, Romania
| | - Felix M. Brehar
- Department of Neurosurgery, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Department of Neurosurgery, Bagdasar-Arseni Clinical Emergency Hospital, Bucharest, Romania
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7
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Pienkowski T, Kowalczyk T, Garcia-Romero N, Ayuso-Sacido A, Ciborowski M. Proteomics and metabolomics approach in adult and pediatric glioma diagnostics. Biochim Biophys Acta Rev Cancer 2022; 1877:188721. [PMID: 35304294 DOI: 10.1016/j.bbcan.2022.188721] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 12/26/2022]
Abstract
The diagnosis of glioma is mainly based on imaging methods that do not distinguish between stage and subtype prior to histopathological analysis. Patients with gliomas are generally diagnosed in the symptomatic stage of the disease. Additionally, healing scar tissue may be mistakenly identified based on magnetic resonance imaging (MRI) as a false positive tumor recurrence in postoperative patients. Current knowledge of molecular alterations underlying gliomagenesis and identification of tumoral biomarkers allow for their use as discriminators of the state of the organism. Moreover, a multiomics approach provides the greatest spectrum and the ability to track physiological changes and can serve as a minimally invasive method for diagnosing asymptomatic gliomas, preceding surgery and allowing for the initiation of prophylactic treatment. It is important to create a vast biomarker library for adults and pediatric patients due to their metabolic differences. This review focuses on the most promising proteomic, metabolomic and lipidomic glioma biomarkers, their pathways, the interactions, and correlations that can be considered characteristic of tumor grade or specific subtype.
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Affiliation(s)
- Tomasz Pienkowski
- Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland.
| | - Tomasz Kowalczyk
- Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland; Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland
| | - Noemi Garcia-Romero
- Faculty of Experimental Sciences, Universidad Francisco de Vitoria, 28223 Madrid, Spain; Brain Tumor Laboratory, Fundación Vithas, Grupo Hospitales Vithas, 28043 Madrid, Spain
| | - Angel Ayuso-Sacido
- Faculty of Experimental Sciences, Universidad Francisco de Vitoria, 28223 Madrid, Spain; Brain Tumor Laboratory, Fundación Vithas, Grupo Hospitales Vithas, 28043 Madrid, Spain; Faculty of Medicine, Universidad Francisco de Vitoria, 28223 Madrid, Spain
| | - Michal Ciborowski
- Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland
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8
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Uceda-Castro R, van Asperen JV, Vennin C, Sluijs JA, van Bodegraven EJ, Margarido AS, Robe PAJ, van Rheenen J, Hol EM. GFAP splice variants fine-tune glioma cell invasion and tumour dynamics by modulating migration persistence. Sci Rep 2022; 12:424. [PMID: 35013418 PMCID: PMC8748899 DOI: 10.1038/s41598-021-04127-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 12/16/2021] [Indexed: 12/26/2022] Open
Abstract
Glioma is the most common form of malignant primary brain tumours in adults. Their highly invasive nature makes the disease incurable to date, emphasizing the importance of better understanding the mechanisms driving glioma invasion. Glial fibrillary acidic protein (GFAP) is an intermediate filament protein that is characteristic for astrocyte- and neural stem cell-derived gliomas. Glioma malignancy is associated with changes in GFAP alternative splicing, as the canonical isoform GFAPα is downregulated in higher-grade tumours, leading to increased dominance of the GFAPδ isoform in the network. In this study, we used intravital imaging and an ex vivo brain slice invasion model. We show that the GFAPδ and GFAPα isoforms differentially regulate the tumour dynamics of glioma cells. Depletion of either isoform increases the migratory capacity of glioma cells. Remarkably, GFAPδ-depleted cells migrate randomly through the brain tissue, whereas GFAPα-depleted cells show a directionally persistent invasion into the brain parenchyma. This study shows that distinct compositions of the GFAPnetwork lead to specific migratory dynamics and behaviours of gliomas.
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Affiliation(s)
- Rebeca Uceda-Castro
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Jessy V van Asperen
- Department of Translational Neuroscience, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Claire Vennin
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Jacqueline A Sluijs
- Department of Translational Neuroscience, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Emma J van Bodegraven
- Department of Translational Neuroscience, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Andreia S Margarido
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Pierre A J Robe
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, University Utrecht, Utrecht, The Netherlands
| | - Jacco van Rheenen
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
| | - Elly M Hol
- Department of Translational Neuroscience, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands.
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9
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van Asperen JV, Robe PA, Hol EM. GFAP Alternative Splicing and the Relevance for Disease – A Focus on Diffuse Gliomas. ASN Neuro 2022; 14:17590914221102065. [PMID: 35673702 PMCID: PMC9185002 DOI: 10.1177/17590914221102065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Glial fibrillary acidic protein (GFAP) is an intermediate filament protein that is
characteristic for astrocytes and neural stem cells, and their malignant analogues in
glioma. Since the discovery of the protein 50 years ago, multiple alternative splice
variants of the GFAP gene have been discovered, leading to different GFAP isoforms. In
this review, we will describe GFAP isoform expression from gene to protein to network,
taking the canonical isoforms GFAPα and the main alternative variant GFAPδ as the starting
point. We will discuss the relevance of studying GFAP and its isoforms in disease, with a
specific focus on diffuse gliomas.
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Affiliation(s)
- Jessy V. van Asperen
- Department of Translational Neuroscience, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Pierre A.J.T. Robe
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, University Utrecht, Utrecht, The Netherlands
| | - Elly M. Hol
- Department of Translational Neuroscience, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
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10
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赵 炜, 林 佳. [Neuregulin 2 is highly expressed in glioma tissues to regulate glial fibrillary acidic protein expression via Akt signaling]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:1171-1176. [PMID: 34549707 PMCID: PMC8527231 DOI: 10.12122/j.issn.1673-4254.2021.08.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate neuregulin 2 (NRG2) expression in gliomas and its role in glioma development. METHODS We compared the expression levels of NRG2 and glial fibrillary acidic protein (GFAP) in low-grade glioma (LGG) and glioblastoma multiforme (GBM) with those in normal control samples using GEPIA database.The correlation between NRG2 and GFAP expression and their association with the overall survival of patients with LGG and GBM were analyzed.Immunohistochemical staining was used to detect NRG2 protein expression levels in a tissue microarray consisting of human gliomas of different grades, and potential co-localization of NRG2 and GFAP was analyzed using a double-labeling immunofluorescence assay.Western blotting was used to investigate the effect of perifosine (an AKT inhibitor) on the regulation of GFAP expression by NRG2 in human glioblastoma U-87 MG cells. RESULTS Both LGG and GBM tissues, especially the former, exhibited high expressions of NRG2 (P < 0.01).In GBM samples, patients with low NRG2 levels had slightly higher overall survival after 30 months than patients with high NRG2 levels.The expression level of NRG2 mRNA was negatively correlated with that of GFAP in LGG samples (P < 0.01) but positively correlated with GFAP expression in GBM samples (P < 0.01).Immunofluorescence assay showed that NRG2 and GFAP were co-expressed in the same tumor cells of LGG tissues but were separately expressed in different tumor cells in GBM tissues.In U-87 MG cells, treatment with recombinant human NRG2 obviously promoted the expression of GFAP, and this effect was significantly inhibited by perifosine (P < 0.01). CONCLUSION NRG2 is highly expressed in gliomas of different grades and regulates GFAP expression in glioma cells at least partly via the Akt signaling pathway to affect the survival of glioma patients.
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Affiliation(s)
- 炜疆 赵
- 江南大学无锡医学院细胞生物学教研室, 江苏 无锡 214122Department of Cell Biology, Wuxi Medical College, Jiangnan University, Wuxi 214122, China
- 赵炜疆,博士,教授,E-mail:
| | - 佳哲 林
- 汕头大学医学院第一附属医院神经外科, 广东 汕头 515041Department of Neurosurgery, First Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
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11
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Ono T, Sasajima T, Shimizu H, Natsumeda M, Kanamori M, Asano K, Beppu T, Matsuda K, Ichikawa M, Fujii Y, Ohkuma H, Ogasawara K, Sonoda Y, Saito K, Nobusawa S, Nakazato Y, Kitanaka C, Kayama T, Tominaga T. Molecular Features and Prognostic Factors of Pleomorphic Xanthoastrocytoma: A Collaborative Investigation of the Tohoku Brain Tumor Study Group. Neurol Med Chir (Tokyo) 2020; 60:543-552. [PMID: 33071274 PMCID: PMC7788268 DOI: 10.2176/nmc.oa.2020-0155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pleomorphic xanthoastrocytoma (PXA) is a rare glial tumor, however, its histological differentiation from high-grade gliomas is often difficult. Molecular characteristics may contribute to a better diagnostic discrimination. Prognostic factors of PXA are also important but few relevant reports have been published. This study investigated the molecular features and prognostic factors of PXAs. Seven university hospitals participated in this study by providing retrospective clinical data and tumor samples of PXA cases between 1993 and 2014. Tumor samples were analyzed for immunohistochemical (IHC) neuronal and glial markers along with Ki67. The status of the BRAF and TERT promoter (TERTp) mutation was also evaluated using the same samples, followed by feature extraction of PXA and survival analyses. In all, 19 primary cases (17 PXA and 2 anaplastic PXA) were included. IHC examination revealed the stable staining of nestin and the close association of synaptophysin to NFP. Of the PXA cases, 57% had the BRAF mutation and only 7% had the TERTp mutation. On univariate analysis, age (≥60 years), preoperative Karnofsky performance status (KPS) (≤80%), and marked peritumoral edema were significantly associated with progression-free survival (PFS). No independent factor was indicated by the multivariate analysis. In conclusion, PXA was characterized by positive nestin staining and a few TERTp mutations. The neuronal differential marker and BRAF status may help in diagnosis. Patient age, preoperative KPS, and marked perifocal edema were associated with PFS. The present study is limited because of small number of cases and its retrospective nature. Further clinical study is needed.
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Affiliation(s)
- Takahiro Ono
- Department of Neurosurgery, Akita University Graduate School of Medicine
| | - Toshio Sasajima
- Department of Neurosurgery, Akita University Graduate School of Medicine
| | - Hiroaki Shimizu
- Department of Neurosurgery, Akita University Graduate School of Medicine
| | - Manabu Natsumeda
- Department of Neurosurgery, Brain Research Institute, Niigata University
| | - Masayuki Kanamori
- Department of Neurosurgery, Tohoku University Graduate School of Medicine
| | - Kenichiro Asano
- Department of Neurosurgery, Hirosaki University Graduate School of Medicine
| | - Takaaki Beppu
- Department of Neurosurgery, Iwate Medical University
| | - Kenichiro Matsuda
- Department of Neurosurgery, Faculty of Medicine, Yamagata University
| | | | - Yukihiko Fujii
- Department of Neurosurgery, Brain Research Institute, Niigata University
| | - Hiroki Ohkuma
- Department of Neurosurgery, Hirosaki University Graduate School of Medicine
| | | | - Yukihiko Sonoda
- Department of Neurosurgery, Faculty of Medicine, Yamagata University
| | - Kiyoshi Saito
- Department of Neurosurgery, Fukushima Medical University
| | - Sumihito Nobusawa
- Department of Human Pathology, Gunma University Graduate School of Medicine
| | | | - Chifumi Kitanaka
- Department of Molecular Cancer Science, Yamagata University School of Medicine
| | - Takamasa Kayama
- Department of Advanced Medicine, Faculty of Medicine, Yamagata University
| | - Teiji Tominaga
- Department of Neurosurgery, Tohoku University Graduate School of Medicine
| | -
- Department of Neurosurgery, Faculty of Medicine, Yamagata University
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12
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Integrated analysis of tumor mutation burden and immune infiltrates in endometrial cancer. Curr Probl Cancer 2020; 45:100660. [PMID: 33012523 DOI: 10.1016/j.currproblcancer.2020.100660] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/18/2020] [Accepted: 09/13/2020] [Indexed: 12/24/2022]
Abstract
To explore the prognostic value of tumor mutation burden (TMB) and its correlation with immune infiltrates in endometrial cancer. Transcriptome and somatic mutation profiles of Uterine Corpus Endometrial Carcinoma (UCEC) were downloaded from TCGA database. Somatic mutations were analyzed by "maftools" and visualized in waterfall plot. We calculated TMB of each patients and divided all patients into the high-TMB group and the low-TMB group by the median threshold. Survival analysis and Wilcoxon test were used to investigate the prognostic value of TMB and its association with clinical variables. Differentially expressed genes (DEGs) were identified in 2 TMN groups and functional analysis was performed to find out significant biological pathways. A TMB-related signature was conducted by multivariate analysis, receiver operating characteristic (ROC) curve was performed to predict accuracy of the model, meanwhile, a validation cohort from Fudan University Shanghai Cancer Center (FUSCC) was obtained to verify the signature. Then we estimated association between TMB and immune infiltrates by CIBERSORT algorithm and figured out prognostic immune cells of UCEC in TIMER database. Total 575 samples including 25 normal tissues and 552 tumor samples were enrolled from TCGA database. PTEN mutations accounted for the most and single nucleotide polymorphism and C>T transitions were most frequent forms of somatic mutations in UCEC. The low-TMB group possessed worse survival than the high-TMB group (P = 0.004). DEGs in 2 TMB groups were mostly enriched in adaptive immune response and immunoglobulin/immune receptor component. A TMB-related signature consisting of GFAP, EDN3, CXCR3, PLXNA4, SST presented good predictability with area under the curve (AUC) = 0.686. In FUSCC validation cohort, the high-risk group possessed worse survival outcome than the low-risk group (P = 0.015). Immune infiltrates was correlated to survival in UCEC and low TMB were associated with less immune infiltrates, which suggested poor immune response. TMB was not only related to overall survival but also immune infiltrates in UCEC. The TMB-related signature (GFAP, EDN3, CXCR3, PLXNA4, SST) had good predictability for overall survival in endometrial cancer. Our study might have some merits in elucidating potential mechanism of TMB and immune infiltrates in UCEC and providing guidance of immunotherapy for endometrial cancer.
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13
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Ahmadipour Y, Gembruch O, Pierscianek D, Sure U, Jabbarli R. Does the expression of glial fibrillary acid protein (GFAP) stain in glioblastoma tissue have a prognostic impact on survival? Neurochirurgie 2020; 66:150-154. [PMID: 32278699 DOI: 10.1016/j.neuchi.2019.12.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/15/2019] [Accepted: 12/26/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Several parameters are known to predict the survival of glioblastoma (GB), including extent of resection and MGMT promotor methylation. Staining for glial fibrillary acidic protein (GFAP) is a common component of routine histological work-up, but its clinical utility in GB is unclear. The aim of the present study was to analyze the predictive value of quantitative GFAP measurements for survival of patients with GB. METHODS All subjects in our institutional database of patients with primary GB who underwent surgery between 2011 and 2014 with examination of immunohistochemical staining of GFAP were included. Percentage GFAP staining was measured in 5% increments (5-100%). Univariate and multivariate analyses were performed between GFAP values and survival data. Clinically relevant cut-offs for GFAP staining were identified by receiver operating characteristic (ROC) curves. RESULTS The final cohort consisted of 272GB patients with available quantitative GFAP measurements (mean age, 62 (±11.1) years, 117 females [43%]). Overall survival was 11.4 months (±8.6). Median GFAP value was 70% (range, 5-100%). The ROC curve showed the clinically relevant cut-off for GFAP at 75% (area under the curve: 0.691). Accordingly, GB patients with GFAP≥75% presented poorer survival on Kaplan-Meier survival estimation (P=0.021). Multivariate analysis adjusted for age, extent of resection, preoperative Karnofsky performance status scale, IDH1 mutation and MGMT methylation status confirmed the independent predictive value of GFAP≥75% for overall survival (P=0.032). Finally, patients with GFAP≥75% showed significantly poorer long-term survival than those with GFAP<75%: 5.8% vs. 15.2% (P=0.0183) and 0.8% vs. 8% (P=0.0076) for 2- and 3-year survival, respectively. CONCLUSION Quantitative immunohistochemical assessment of GFAP staining could provide a novel biomarker for overall and especially long-term survival of patients with GB. Prospective multi-center validation of the prognostic value of GFAP for GB survival is needed.
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Affiliation(s)
- Y Ahmadipour
- Department of Neurosurgery, University Hospital Essen, Essen, Germany.
| | - O Gembruch
- Department of Neurosurgery, University Hospital Essen, Essen, Germany
| | - D Pierscianek
- Department of Neurosurgery, University Hospital Essen, Essen, Germany
| | - U Sure
- Department of Neurosurgery, University Hospital Essen, Essen, Germany
| | - R Jabbarli
- Department of Neurosurgery, University Hospital Essen, Essen, Germany
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14
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Oudart M, Tortuyaux R, Mailly P, Mazaré N, Boulay AC, Cohen-Salmon M. AstroDot - a new method for studying the spatial distribution of mRNA in astrocytes. J Cell Sci 2020; 133:jcs239756. [PMID: 32079659 DOI: 10.1242/jcs.239756] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 02/09/2020] [Indexed: 08/31/2023] Open
Abstract
Astrocytes are morphologically complex and use local translation to regulate distal functions. To study the distribution of mRNA in astrocytes, we combined mRNA detection via in situ hybridization with immunostaining of the astrocyte-specific intermediate filament glial fibrillary acidic protein (GFAP). mRNAs at the level of GFAP-immunolabelled astrocyte somata, and large and fine processes were analysed using AstroDot, an ImageJ plug-in and the R package AstroStat. Taking the characterization of mRNAs encoding GFAP-α and GFAP-δ isoforms as a proof of concept, we showed that they mainly localized on GFAP processes. In the APPswe/PS1dE9 mouse model of Alzheimer's disease, the density and distribution of both α and δ forms of Gfap mRNA changed as a function of the region of the hippocampus and the astrocyte's proximity to amyloid plaques. To validate our method, we confirmed that the ubiquitous Rpl4 (large subunit ribosomal protein 4) mRNA was present in astrocyte processes as well as in microglia processes immunolabelled for ionized calcium binding adaptor molecule 1 (Iba1; also known as IAF1). In summary, this novel set of tools allows the characterization of mRNA distribution in astrocytes and microglia in physiological or pathological settings.
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Affiliation(s)
- Marc Oudart
- Physiology and Physiopathology of the Gliovascular Unit Research Group, Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS Unité Mixte de Recherche 724, INSERM Unité 1050, Labex Memolife, PSL Research University, Paris 75005, France
- Center for Interdisciplinary Research in Biology (CIRB), College de France, Unité Mixte de Recherche 7241 CNRS, Unité1050 INSERM, PSL Research University, Paris 75005, France
| | - Romain Tortuyaux
- Physiology and Physiopathology of the Gliovascular Unit Research Group, Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS Unité Mixte de Recherche 724, INSERM Unité 1050, Labex Memolife, PSL Research University, Paris 75005, France
- Center for Interdisciplinary Research in Biology (CIRB), College de France, Unité Mixte de Recherche 7241 CNRS, Unité1050 INSERM, PSL Research University, Paris 75005, France
| | - Philippe Mailly
- Center for Interdisciplinary Research in Biology (CIRB), College de France, Unité Mixte de Recherche 7241 CNRS, Unité1050 INSERM, PSL Research University, Paris 75005, France
- Orion Imaging Facility, Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS Unité Mixte de Recherche 724, INSERM Unité 1050, Labex Memolife, PSL Research University, Paris 75005, France
| | - Noémie Mazaré
- Physiology and Physiopathology of the Gliovascular Unit Research Group, Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS Unité Mixte de Recherche 724, INSERM Unité 1050, Labex Memolife, PSL Research University, Paris 75005, France
- Center for Interdisciplinary Research in Biology (CIRB), College de France, Unité Mixte de Recherche 7241 CNRS, Unité1050 INSERM, PSL Research University, Paris 75005, France
| | - Anne-Cécile Boulay
- Physiology and Physiopathology of the Gliovascular Unit Research Group, Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS Unité Mixte de Recherche 724, INSERM Unité 1050, Labex Memolife, PSL Research University, Paris 75005, France
- Center for Interdisciplinary Research in Biology (CIRB), College de France, Unité Mixte de Recherche 7241 CNRS, Unité1050 INSERM, PSL Research University, Paris 75005, France
| | - Martine Cohen-Salmon
- Physiology and Physiopathology of the Gliovascular Unit Research Group, Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS Unité Mixte de Recherche 724, INSERM Unité 1050, Labex Memolife, PSL Research University, Paris 75005, France
- Center for Interdisciplinary Research in Biology (CIRB), College de France, Unité Mixte de Recherche 7241 CNRS, Unité1050 INSERM, PSL Research University, Paris 75005, France
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15
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van Bodegraven EJ, van Asperen JV, Sluijs JA, van Deursen CBJ, van Strien ME, Stassen OMJA, Robe PAJ, Hol EM. GFAP alternative splicing regulates glioma cell-ECM interaction in a DUSP4-dependent manner. FASEB J 2019; 33:12941-12959. [PMID: 31480854 DOI: 10.1096/fj.201900916r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Gliomas are the most common primary brain tumors. Their highly invasive character and the heterogeneity of active oncogenic pathways within single tumors complicate the development of curative therapies and cause poor patient prognosis. Glioma cells express the intermediate filament protein glial fibrillary acidic protein (GFAP), and the level of its alternative splice variant GFAP-δ, relative to its canonical splice variant GFAP-α, is higher in grade IV compared with lower-grade and lower malignant glioma. In this study we show that a high GFAP-δ/α ratio induces the expression of the dual-specificity phosphatase 4 (DUSP4) in focal adhesions. By focusing on pathways up- and downstream of DUSP4 that are involved in the cell-extracellular matrix interaction, we show that a high GFAP-δ/α ratio equips glioma cells to better invade the brain. This study supports the hypothesis that glioma cells with a high GFAP-δ/α ratio are highly invasive and more malignant cells, thus making GFAP alternative splicing a potential therapeutic target.-Van Bodegraven, E. J., van Asperen, J. V., Sluijs, J. A., van Deursen, C. B. J., van Strien, M. E., Stassen, O. M. J. A., Robe, P. A. J., Hol, E. M. GFAP alternative splicing regulates glioma cell-ECM interaction in a DUSP4-dependent manner.
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Affiliation(s)
- Emma J van Bodegraven
- Department of Translational Neurosciences, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Jessy V van Asperen
- Department of Translational Neurosciences, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Jacqueline A Sluijs
- Department of Translational Neurosciences, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Coen B J van Deursen
- Department of Translational Neurosciences, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Miriam E van Strien
- Department of Translational Neurosciences, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Oscar M J A Stassen
- Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland.,Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
| | - Pierre A J Robe
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Elly M Hol
- Department of Translational Neurosciences, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
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16
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van Bodegraven EJ, van Asperen JV, Robe PAJ, Hol EM. Importance of GFAP isoform-specific analyses in astrocytoma. Glia 2019; 67:1417-1433. [PMID: 30667110 PMCID: PMC6617972 DOI: 10.1002/glia.23594] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/28/2018] [Accepted: 01/03/2019] [Indexed: 12/12/2022]
Abstract
Gliomas are a heterogenous group of malignant primary brain tumors that arise from glia cells or their progenitors and rely on accurate diagnosis for prognosis and treatment strategies. Although recent developments in the molecular biology of glioma have improved diagnosis, classical histological methods and biomarkers are still being used. The glial fibrillary acidic protein (GFAP) is a classical marker of astrocytoma, both in clinical and experimental settings. GFAP is used to determine glial differentiation, which is associated with a less malignant tumor. However, since GFAP is not only expressed by mature astrocytes but also by radial glia during development and neural stem cells in the adult brain, we hypothesized that GFAP expression in astrocytoma might not be a direct indication of glial differentiation and a less malignant phenotype. Therefore, we here review all existing literature from 1972 up to 2018 on GFAP expression in astrocytoma patient material to revisit GFAP as a marker of lower grade, more differentiated astrocytoma. We conclude that GFAP is heterogeneously expressed in astrocytoma, which most likely masks a consistent correlation of GFAP expression to astrocytoma malignancy grade. The GFAP positive cell population contains cells with differences in morphology, function, and differentiation state showing that GFAP is not merely a marker of less malignant and more differentiated astrocytoma. We suggest that discriminating between the GFAP isoforms GFAPδ and GFAPα will improve the accuracy of assessing the differentiation state of astrocytoma in clinical and experimental settings and will benefit glioma classification.
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Affiliation(s)
- Emma J van Bodegraven
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - Jessy V van Asperen
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - Pierre A J Robe
- Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - Elly M Hol
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.,Netherlands Institute for Neuroscience, An Institute of the Royal Netherlands Academy of Arts and Sciences, Meibergdreef 47, 1105, BA, Amsterdam, The Netherlands
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17
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Bardella C, Al-Shammari AR, Soares L, Tomlinson I, O'Neill E, Szele FG. The role of inflammation in subventricular zone cancer. Prog Neurobiol 2018; 170:37-52. [PMID: 29654835 DOI: 10.1016/j.pneurobio.2018.04.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 03/10/2018] [Accepted: 04/07/2018] [Indexed: 12/12/2022]
Abstract
The adult subventricular zone (SVZ) stem cell niche has proven vital for discovering neurodevelopmental mechanisms and holds great potential in medicine for neurodegenerative diseases. Yet the SVZ holds a dark side - it can become tumorigenic. Glioblastomas can arise from the SVZ via cancer stem cells (CSCs). Glioblastoma and other brain cancers often have dismal prognoses since they are resistant to treatment. In this review we argue that the SVZ is susceptible to cancer because it contains stem cells, migratory progenitors and unusual inflammation. Theoretically, SVZ stem cells can convert to CSCs more readily than can postmitotic neural cells. Additionally, the robust long-distance migration of SVZ progenitors can be subverted upon tumorigenesis to an infiltrative phenotype. There is evidence that the SVZ, even in health, exhibits chronic low-grade cellular and molecular inflammation. Its inflammatory response to brain injuries and disease differs from that of other brain regions. We hypothesize that the SVZ inflammatory environment can predispose cells to novel mutations and exacerbate cancer phenotypes. This can be studied in animal models in which human mutations related to cancer are knocked into the SVZ to induce tumorigenesis and the CSC immune interactions that precede full-blown cancer. Importantly inflammation can be pharmacologically modulated providing an avenue to brain cancer management and treatment. The SVZ is accessible by virtue of its location surrounding the lateral ventricles and CSCs in the SVZ can be targeted with a variety of pharmacotherapies. Thus, the SVZ can yield aggressive tumors but can be targeted via several strategies.
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Affiliation(s)
- Chiara Bardella
- Institute of Cancer and Genomics Sciences, University of Birmingham, Birmingham, UK
| | - Abeer R Al-Shammari
- Research and Development, Qatar Research Leadership Program, Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Luana Soares
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK; Department of Oncology, University of Oxford, Oxford, UK
| | - Ian Tomlinson
- Institute of Cancer and Genomics Sciences, University of Birmingham, Birmingham, UK
| | - Eric O'Neill
- Department of Oncology, University of Oxford, Oxford, UK
| | - Francis G Szele
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK.
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18
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Sereika M, Urbanaviciute R, Tamasauskas A, Skiriute D, Vaitkiene P. GFAP expression is influenced by astrocytoma grade and rs2070935 polymorphism. J Cancer 2018; 9:4496-4502. [PMID: 30519355 PMCID: PMC6277660 DOI: 10.7150/jca.26769] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 08/26/2018] [Indexed: 11/05/2022] Open
Abstract
Glial fibrillary acidic protein (GFAP) is an intermediate filament that provides mechanical support to astrocytes. Rs2070935 is a single nucleotide polymorphism (SNP) located in the promoter region of the GFAP gene. The aim of this pilot study is to investigate GFAP expression at mRNA, protein levels and rs2070935 polymorphism in 50 different grade human astrocytoma samples. GFAP expression at mRNA level was measured using quantitative reverse transcription polymerase chain reaction (qRT-PCR) with SYBR Green dye, whereas the translational activity of the following gene was detected using western blot assay. Furthermore, genotypes of rs2070935 were identified using qPCR with TaqMan probes. As a result, GFAP mRNA and protein expression was found to be declining with increasing astrocytoma grade (p < 0.05). A tendency was observed between increased GFAP mRNA expression and shorter grade IV astrocytoma patient survival (p = 0.2117). The rs2070935 CC genotype was found to be associated with increased GFAP translational activity in grade II astrocytoma (p = 0.0238). Possible links between rs2070935 genotypes and alternative splicing of GFAP were also observed. The rs2070935 AA genotype was found to be associated with poor clinical outcome for grade IV astrocytoma patients (p = 0.0007), although the following data should be checked in a larger sample size of astrocytoma patients.
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Affiliation(s)
- Mantas Sereika
- Laboratory of Molecular Neurooncology, Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, Kaunas, LT 50009, Lithuania
| | - Ruta Urbanaviciute
- Laboratory of Molecular Neurooncology, Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, Kaunas, LT 50009, Lithuania
| | - Arimantas Tamasauskas
- Laboratory of Molecular Neurooncology, Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, Kaunas, LT 50009, Lithuania
| | - Daina Skiriute
- Laboratory of Molecular Neurooncology, Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, Kaunas, LT 50009, Lithuania
| | - Paulina Vaitkiene
- Laboratory of Molecular Neurooncology, Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, Kaunas, LT 50009, Lithuania
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Vasilskis E, Kreimerman I, Olivera S, Savio E, Engler H. Comparative In Vitro Study of 11C-Methionine and 11C-Deuterodeprenyl Uptake in Three Human Glioma Cell Lines. Cancer Biother Radiopharm 2018; 32:344-350. [PMID: 29140741 DOI: 10.1089/cbr.2017.2334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIM To compare the uptake of 11C-deuterodeprenyl (11C-DED) and 11C-methionine (11C-MET) in three human glioma cell lines and study the relationship with glial fibrillary acid protein (GFAP) and monoamine oxidase B (MAO B) expression. 11C-DED is used in positron emission tomography imaging as a marker of astrocytosis in various central nervous system pathologies. It binds irreversibly to MAO B, a glial dimeric enzyme with increased activity in some neurological pathologies. MATERIALS AND METHODS Binding and internalization studies of 11C-MET and 11C-DED were performed in astrocytoma grade III, glioblastoma grade IV, and radio-resistant glioblastoma grade IV cells. Immunofluorescence was used. RESULTS 11C-MET specific activity bound to membrane was 9.0%-11.1% and that internalized was 88.9%-91.0%. 11C-DED specific activity bound to membrane was 34.8%-58.0% and that internalized was 38.7%-65.2%. Immunocytochemistry revealed GFAP and MAO B expression. CONCLUSIONS The expression of MAO B measured by 11C-DED uptake or immunocytochemistry was not significantly different in grade III or IV cells. The GFAP signal was higher for grade IV compared to grade III. 11C-MET uptake was high in all the tumor cells. 11C-DED is a dopamine analogue and the transport across cell membranes is expected to be mediated by DAT receptors present in astrocytes. Reactive astrocytes surround tumor lesions; so the authors suggest that the 11C-DED uptake might be caused by the reactive astrocytosis and not by MAO B expression in tumor cells.
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Affiliation(s)
- Elena Vasilskis
- 1 Biomedical Research Department, Centro Uruguayo de Imagenologia Molecular , Montevideo, Uruguay
| | - Ingrid Kreimerman
- 2 Department of Radiopharmacy, Centro Uruguayo de Imagenologia Molecular , Montevideo, Uruguay
| | - Silvia Olivera
- 3 Instituto de Investigaciones Biologicas Clemente Estable , Montevideo, Uruguay
| | - Eduardo Savio
- 1 Biomedical Research Department, Centro Uruguayo de Imagenologia Molecular , Montevideo, Uruguay .,2 Department of Radiopharmacy, Centro Uruguayo de Imagenologia Molecular , Montevideo, Uruguay
| | - Henry Engler
- 1 Biomedical Research Department, Centro Uruguayo de Imagenologia Molecular , Montevideo, Uruguay .,2 Department of Radiopharmacy, Centro Uruguayo de Imagenologia Molecular , Montevideo, Uruguay
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Alamir H, Alomari M, Salwati AAA, Saka M, Bangash M, Baeesa S, Alghamdi F, Carracedo A, Schulten HJ, Chaudhary A, Abuzenadah A, Hussein D. In situ characterization of stem cells-like biomarkers in meningiomas. Cancer Cell Int 2018; 18:77. [PMID: 29849507 PMCID: PMC5970464 DOI: 10.1186/s12935-018-0571-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/15/2018] [Indexed: 12/16/2022] Open
Abstract
Background Meningioma cancer stem cells (MCSCs) contribute to tumor aggressiveness and drug resistance. Successful therapies developed for inoperable, recurrent, or metastatic tumors must target these cells and restrict their contribution to tumor progression. Unfortunately, the identity of MCSCs remains elusive, and MSCSs’ in situ spatial distribution, heterogeneity, and relationship with tumor grade, remain unclear. Methods Seven tumors classified as grade II or grade III, including one case of metastatic grade III, and eight grade I meningioma tumors, were analyzed for combinations of ten stem cell (SC)-related markers using immunofluorescence of consecutive sections. The correlation of expression for all markers were investigated. Three dimensional spatial distribution of markers were qualitatively analyzed using a grid, designed as a repository of information for positive staining. All statistical analyses were completed using Statistical Analysis Software Package. Results The patterns of expression for SC-related markers were determined in the context of two dimensional distribution and cellular features. All markers could be detected in all tumors, however, Frizzled 9 and GFAP had differential expression in grade II/III compared with grade I meningioma tissues. Correlation analysis showed significant relationships between the expression of GFAP and CD133 as well as SSEA4 and Vimentin. Data from three dimensional analysis showed a complex distribution of SC markers, with increased gene hetero-expression being associated with grade II/III tumors. Sub regions that showed multiple co-staining of markers including CD133, Frizzled 9, GFAP, Vimentin, and SSEA4, but not necessarily the proliferation marker Ki67, were highly associated with grade II/III meningiomas. Conclusion The distribution and level of expression of CSCs markers in meningiomas are variable and show hetero-expression patterns that have a complex spatial nature, particularly in grade II/III meningiomas. Thus, results strongly support the notion of heterogeneous populations of CSCs, even in grade I meningiomas, and call for the use of multiple markers for the accurate identification of individual CSC subgroups. Such identification will lead to practical clinical diagnostic protocols that can quantitate CSCs, predict tumor recurrence, assist in guiding treatment selection for inoperable tumors, and improve follow up of therapy. Electronic supplementary material The online version of this article (10.1186/s12935-018-0571-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hanin Alamir
- 1Centre of Innovation for Personalized Medicine, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Mona Alomari
- 2King Fahd Medical Research Center, King Abdulaziz University, P.O. Box. 80216, Jeddah, 21589 Saudi Arabia
| | - Abdulla Ahmed A Salwati
- 2King Fahd Medical Research Center, King Abdulaziz University, P.O. Box. 80216, Jeddah, 21589 Saudi Arabia
| | - Mohamad Saka
- 2King Fahd Medical Research Center, King Abdulaziz University, P.O. Box. 80216, Jeddah, 21589 Saudi Arabia
| | - Mohammed Bangash
- 3Division of Neurosurgery, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Saleh Baeesa
- 3Division of Neurosurgery, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Fahad Alghamdi
- 4Pathology Department, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Angel Carracedo
- 5Galician Foundation of Genomic Medicine-SERGAS, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain.,6Center of Excellence in Genomic Medicine, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Hans-Juergen Schulten
- 6Center of Excellence in Genomic Medicine, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Adeel Chaudhary
- 1Centre of Innovation for Personalized Medicine, King Abdulaziz University, Jeddah, 21589 Saudi Arabia.,6Center of Excellence in Genomic Medicine, King Abdulaziz University, Jeddah, 21589 Saudi Arabia.,7Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Adel Abuzenadah
- 1Centre of Innovation for Personalized Medicine, King Abdulaziz University, Jeddah, 21589 Saudi Arabia.,2King Fahd Medical Research Center, King Abdulaziz University, P.O. Box. 80216, Jeddah, 21589 Saudi Arabia.,7Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Deema Hussein
- 2King Fahd Medical Research Center, King Abdulaziz University, P.O. Box. 80216, Jeddah, 21589 Saudi Arabia
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Hol EM, Capetanaki Y. Type III Intermediate Filaments Desmin, Glial Fibrillary Acidic Protein (GFAP), Vimentin, and Peripherin. Cold Spring Harb Perspect Biol 2017; 9:9/12/a021642. [PMID: 29196434 DOI: 10.1101/cshperspect.a021642] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
SummaryType III intermediate filament (IF) proteins assemble into cytoplasmic homopolymeric and heteropolymeric filaments with other type III and some type IV IFs. These highly dynamic structures form an integral component of the cytoskeleton of muscle, brain, and mesenchymal cells. Here, we review the current ideas on the role of type III IFs in health and disease. It turns out that they not only offer resilience to mechanical strains, but, most importantly, they facilitate very efficiently the integration of cell structure and function, thus providing the necessary scaffolds for optimal cellular responses upon biochemical stresses and protecting against cell death, disease, and aging.
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Affiliation(s)
- Elly M Hol
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht, 3584 CG Utrecht, The Netherlands.,Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, 1105 BA Amsterdam, The Netherlands.,Swammerdam Institute for Life Sciences, Center for Neuroscience, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Yassemi Capetanaki
- Center of Basic Research, Biomedical Research Foundation Academy of Athens, Athens 11527, Greece
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GFAPδ/GFAPα ratio directs astrocytoma gene expression towards a more malignant profile. Oncotarget 2017; 8:88104-88121. [PMID: 29152145 PMCID: PMC5675697 DOI: 10.18632/oncotarget.21540] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/25/2017] [Indexed: 12/25/2022] Open
Abstract
Astrocytomas are the most common malignant brain tumours and are to date incurable. It is unclear how astrocytomas progress into higher malignant grades. The intermediate filament cytoskeleton is emerging as an important regulator of malignancy in several tumours. The majority of the astrocytomas express the intermediate filament protein Glial Fibrillary Acidic Protein (GFAP). Several GFAP splice variants have been identified and the main variants expressed in human astrocytoma are the GFAPα and GFAPδ isoforms. Here we show a significant downregulation of GFAPα in grade IV astrocytoma compared to grade II and III, resulting in an increased GFAPδ/α ratio. Mimicking this increase in GFAPδ/α ratio in astrocytoma cell lines and comparing the subsequent transcriptomic changes with the changes in the patient tumours, we have identified a set of GFAPδ/α ratio-regulated high-malignant and low-malignant genes. These genes are involved in cell proliferation and protein phosphorylation, and their expression correlated with patient survival. We additionally show that changing the ratio of GFAPδ/α, by targeting GFAP expression, affected expression of high-malignant genes. Our data imply that regulating GFAP expression and splicing are novel therapeutic targets that need to be considered as a treatment for astrocytoma.
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Liu RZ, Li S, Garcia E, Glubrecht DD, Poon HY, Easaw JC, Godbout R. Association between cytoplasmic CRABP2, altered retinoic acid signaling, and poor prognosis in glioblastoma. Glia 2016; 64:963-76. [PMID: 26893190 DOI: 10.1002/glia.22976] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 01/22/2016] [Accepted: 01/25/2016] [Indexed: 12/26/2022]
Abstract
Retinoic acid (RA), a metabolite of vitamin A, is required for the regulation of growth and development. Aberrant expression of molecules involved in RA signaling has been reported in various cancer types including glioblastoma multiforme (GBM). Cellular retinoic acid-binding protein 2 (CRABP2) has previously been shown to play a key role in the transport of RA to retinoic acid receptors (RARs) to activate their transcription regulatory activity. Here, we demonstrate that CRABP2 is predominantly located in the cytoplasm of GBM tumors. Cytoplasmic, but not nuclear, CRABP2 levels in GBM tumors are associated with poor patient survival. Treatment of malignant glioma cell lines with RA results in a dose-dependent increase in accumulation of CRABP2 in the cytoplasm. CRABP2 knockdown reduces proliferation rates of malignant glioma cells, and enhances RA-induced RAR activation. Levels of CRYAB, a small heat shock protein with anti-apoptotic activity, and GFAP, an astrocyte-specific intermediate filament protein, are greatly reduced in CRABP2-depleted cells. Restoration of CRYAB expression partially but significantly reversed the effect of CRABP2 depletion on RAR activation. Our combined in vivo and in vitro data indicate that: (i) CRABP2 is an important determinant of clinical outcome in GBM patients, and (ii) the mechanism of action of CRABP2 in GBM involves sequestration of RA in the cytoplasm and activation of an anti-apoptotic pathway, thereby enhancing proliferation and preventing RA-mediated cell death and differentiation. We propose that reducing CRABP2 levels may enhance the therapeutic index of RA in GBM patients.
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Affiliation(s)
- Rong-Zong Liu
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta, T6G 1Z2, Canada
| | - Shuai Li
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta, T6G 1Z2, Canada
| | - Elizabeth Garcia
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta, T6G 1Z2, Canada
| | - Darryl D Glubrecht
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta, T6G 1Z2, Canada
| | - Ho Yin Poon
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta, T6G 1Z2, Canada
| | - Jacob C Easaw
- Division of Medical Oncology, University of Calgary, Calgary, Alberta, T2N 4N2, Canada
| | - Roseline Godbout
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta, T6G 1Z2, Canada
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Takayama Y, Matsumura N, Nobusawa S, Ikota H, Minegishi T, Yokoo H. Immunophenotypic features of immaturity of neural elements in ovarian teratoma. Virchows Arch 2015; 468:337-43. [DOI: 10.1007/s00428-015-1891-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 11/08/2015] [Accepted: 11/23/2015] [Indexed: 11/29/2022]
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Glial fibrillary acidic protein (GFAP) and the astrocyte intermediate filament system in diseases of the central nervous system. Curr Opin Cell Biol 2015; 32:121-30. [PMID: 25726916 DOI: 10.1016/j.ceb.2015.02.004] [Citation(s) in RCA: 539] [Impact Index Per Article: 59.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 02/04/2015] [Accepted: 02/09/2015] [Indexed: 01/14/2023]
Abstract
Glial fibrillary acidic protein (GFAP) is the hallmark intermediate filament (IF; also known as nanofilament) protein in astrocytes, a main type of glial cells in the central nervous system (CNS). Astrocytes have a range of control and homeostatic functions in health and disease. Astrocytes assume a reactive phenotype in acute CNS trauma, ischemia, and in neurodegenerative diseases. This coincides with an upregulation and rearrangement of the IFs, which form a highly complex system composed of GFAP (10 isoforms), vimentin, synemin, and nestin. We begin to unravel the function of the IF system of astrocytes and in this review we discuss its role as an important crisis-command center coordinating cell responses in situations connected to cellular stress, which is a central component of many neurological diseases.
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Tena-Suck ML, Castillejos-López M, Díaz-Alba A, Sanchez-Garibay C. Expression of glial acidic fibrillary protein delta and E-cadherin in ependymomas; clinic-pathological and immunohistochemistry correlation. Histol Histopathol 2015. [DOI: 10.7243/2055-091x-2-17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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