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Chen W, Guo S, Wang Y, Shi Y, Guo X, Liu D, Li Y, Wang Y, Xing H, Xia Y, Li J, Wu J, Liang T, Wang H, Liu Q, Jin S, Qu T, Li H, Yang T, Zhang K, Wang Y, Ma W. Novel insight into histological and molecular astrocytoma, IDH-mutant, Grade 4 by the updated WHO classification of central nervous system tumors. Cancer Med 2023; 12:18666-18678. [PMID: 37667984 PMCID: PMC10557904 DOI: 10.1002/cam4.6476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 08/02/2023] [Accepted: 08/14/2023] [Indexed: 09/06/2023] Open
Abstract
BACKGROUND The latest fifth edition of the World Health Organization (WHO) classification of the central nervous system (CNS) tumors (WHO CNS 5 classification) released in 2021 defined astrocytoma, IDH-mutant, Grade 4. However, the understanding of this subtype is still limited. We conducted this study to describe the features of astrocytoma, IDH-mutant, Grade 4 and explored the similarities and differences between histological and molecular subtypes. METHODS Patients who underwent surgery from January 2011 to January 2022, classified as astrocytoma, IDH-mutant, Grade 4 were included in this study. Clinical, radiological, histopathological, molecular pathological, and survival data were collected for analysis. RESULTS Altogether 33 patients with astrocytoma, IDH-mutant, Grade 4 were selected, including 20 with histological and 13 with molecular WHO Grade 4 astrocytoma. Tumor enhancement, intratumoral-necrosis like presentation, larger peritumoral edema, and more explicit tumor margins were frequently observed in histological WHO Grade 4 astrocytoma. Additionally, molecular WHO Grade 4 astrocytoma showed a tendency for relatively longer overall survival, while a statistical significance was not reached (47 vs. 25 months, p = 0.22). TP53, CDK6, and PIK3CA alteration was commonly observed, while PIK3R1 (p = 0.033), Notch1 (p = 0.027), and Mycn (p = 0.027) alterations may affect the overall survival of molecular WHO Grade 4 astrocytomas. CONCLUSIONS Our study scrutinized IDH-mutant, Grade 4 astrocytoma. Therefore, further classification should be considered as the prognosis varied between histological and molecular WHO Grade 4 astrocytomas. Notably, therapies aiming at PIK3R1, Notch 1, and Mycn may be beneficial.
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Affiliation(s)
- Wenlin Chen
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Siying Guo
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yaning Wang
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yixin Shi
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xiaopeng Guo
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- China Anti‐Cancer Association Specialty Committee of GliomaBeijingChina
| | - Delin Liu
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yilin Li
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- 4+4 Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yuekun Wang
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Hao Xing
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yu Xia
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Junlin Li
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Jiaming Wu
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Tingyu Liang
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Hai Wang
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Qianshu Liu
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Shanmu Jin
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- 4+4 Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Tian Qu
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Huanzhang Li
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Tianrui Yang
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Kun Zhang
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Eight‐year Medical Doctor ProgramChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yu Wang
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- China Anti‐Cancer Association Specialty Committee of GliomaBeijingChina
| | - Wenbin Ma
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- China Anti‐Cancer Association Specialty Committee of GliomaBeijingChina
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Huang LE. Impact of CDKN2A/B Homozygous Deletion on the Prognosis and Biology of IDH-Mutant Glioma. Biomedicines 2022; 10:biomedicines10020246. [PMID: 35203456 PMCID: PMC8869746 DOI: 10.3390/biomedicines10020246] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/20/2022] [Accepted: 01/20/2022] [Indexed: 12/13/2022] Open
Abstract
Although hotspot mutations in isocitrate dehydrogenase (IDH) genes are associated with favorable clinical outcomes in glioma, CDKN2A/B homozygous deletion has been identified as an independent predicator of poor prognosis. Accordingly, the 2021 edition of the World Health Organization (WHO) classification of tumors of the central nervous system (CNS) has adopted this molecular feature by upgrading IDH-mutant astrocytoma to CNS WHO grade IV, even in the absence of glioblastoma-specific histological features—necrosis and microvascular proliferation. This new entity of IDH-mutant astrocytoma not only signifies an exception to the generally favorable outcome of IDH-mutant glioma, but also brings into question whether, and, if so, how, CDKN2A/B homozygous deletion overrides the anti-tumor activity of IDH mutation by promoting the proliferation of stem/neural progenitor-like cells. Understanding the mechanism by which IDH mutation requires intact tumor-suppressor genes for conferring favorable outcome may improve therapeutics.
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Affiliation(s)
- L. Eric Huang
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT 84132, USA;
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
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Murnyak B, Huang LE. Association of TP53 Alteration with Tissue Specificity and Patient Outcome of IDH1-Mutant Glioma. Cells 2021; 10:2116. [PMID: 34440884 PMCID: PMC8394030 DOI: 10.3390/cells10082116] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/14/2021] [Accepted: 08/15/2021] [Indexed: 12/20/2022] Open
Abstract
Since the initial discovery of recurrent isocitrate dehydrogenase 1 (IDH1) mutations at Arg132 in glioma, IDH1 hotspot mutations have been identified in cholangiocarcinoma, chondrosarcoma, leukemia, and various other types of cancer of sporadic incidence. Studies in glioma and leukemia have helped promote the theory that IDH1 mutations are an oncogenic event that drives tumorigenesis in general. Through bioinformatic analysis of more than 45,000 human pan-cancer samples from three independent datasets, we show here that IDH1 mutations are rare events in human cancer but are exclusively prevalent in WHO grade II and grade III (lower-grade) glioma. Interestingly, alterations in the tumor-suppressor gene TP53 (tumor protein p53) co-occur significantly with IDH1 mutations and show a tendency of exclusivity to IDH2 mutations. The co-occurrence of IDH1 mutation and TP53 alteration is widespread in glioma, particularly in those harboring IDH1R132H, IDH1R132G, and IDH1R132S, whereas co-occurrence of IDH1R132C and TP53 alteration can be found sporadically in other cancer types. In keeping with the importance of p53 in tumor suppression, TP53 status is an independent predictor of overall survival irrespective of histological and molecular subgroups in lower-grade glioma. Together, these results indicate tissue specificity of IDH1 hotspot mutation and TP53 alteration and the importance of TP53 status as a predictor of patient outcome in lower-grade glioma.
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Affiliation(s)
- Balazs Murnyak
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT 84132, USA;
| | - L. Eric Huang
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT 84132, USA;
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
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Tiburcio PDB, Locke MC, Bhaskara S, Chandrasekharan MB, Huang LE. The neural stem-cell marker CD24 is specifically upregulated in IDH-mutant glioma. Transl Oncol 2020; 13:100819. [PMID: 32622311 PMCID: PMC7332530 DOI: 10.1016/j.tranon.2020.100819] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/25/2020] [Accepted: 05/27/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Malignant gliomas have disproportionally high morbidity and mortality. Heterozygous mutations in the isocitrate dehydrogenase 1 (IDH1) gene are most common in glioma, resulting in predominantly arginine to histidine substitution at codon 132. Because IDH1R132H requires a wild-type allele to produce (D)-2-hydroxyglutarate for epigenetic reprogramming, loss of IDH1R132H heterozygosity is associated with glioma progression in an IDH1-wildtype-like phenotype. Although previous studies have reported that transgenic IDH1R132H induces the expression of nestin-a neural stem-cell marker, the underlying mechanism remains unclear. Furthermore, this finding seems at odds with better outcome of IDH1R132H glioma because of a negative association of nestin with overall survival. METHODS Gene expression was compared between IDH1R132H-hemizygous and IDH1R132H-heterozygous glioma cells under adherent and spheroid growth conditions. The results were validated for (D)-2-hydroxyglutarate responsiveness by pharmacologic agents, associations with DNA methylation by bioinformatic analysis, and associations with overall survival. Bisulfite DNA sequencing, chromatin immunoprecipitation, and pharmacological approach were used. FINDINGS Neural stem-cell marker genes, including CD44, NES, and PROM1, are generally downregulated in IDH-mutant gliomas and IDH1R132H-heterozygous spheroid growth compared respectively with IDH-wildtype gliomas and IDH1R132H-hemizygous spheroid growth, in agreement with their negative associations with patient outcome. In contrast, CD24 is specifically upregulated and apparently associated with better survival. CD24 and NES expression respond differentially to alteration of (D)-2-hydroxyglutarate levels. CD24 upregulation is associated with histone and DNA demethylation as opposed to hypermethylation in the downregulated genes. INTERPRETATION The better outcome of IDH-mutant glioma is orchestrated exquisitely through epigenetic reprogramming that directs bidirectional expression of neural stem-cell marker genes.
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Affiliation(s)
- Patricia D B Tiburcio
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT, USA; Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Mary C Locke
- Department of Radiation Oncology, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Srividya Bhaskara
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA; Department of Radiation Oncology, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Mahesh B Chandrasekharan
- Department of Radiation Oncology, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - L Eric Huang
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT, USA; Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA.
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IDH mutation in glioma: molecular mechanisms and potential therapeutic targets. Br J Cancer 2020; 122:1580-1589. [PMID: 32291392 PMCID: PMC7250901 DOI: 10.1038/s41416-020-0814-x] [Citation(s) in RCA: 323] [Impact Index Per Article: 80.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/24/2020] [Accepted: 03/02/2020] [Indexed: 02/06/2023] Open
Abstract
Isocitrate dehydrogenase (IDH) enzymes catalyse the oxidative decarboxylation of isocitrate and therefore play key roles in the Krebs cycle and cellular homoeostasis. Major advances in cancer genetics over the past decade have revealed that the genes encoding IDHs are frequently mutated in a variety of human malignancies, including gliomas, acute myeloid leukaemia, cholangiocarcinoma, chondrosarcoma and thyroid carcinoma. A series of seminal studies further elucidated the biological impact of the IDH mutation and uncovered the potential role of IDH mutants in oncogenesis. Notably, the neomorphic activity of the IDH mutants establishes distinctive patterns in cancer metabolism, epigenetic shift and therapy resistance. Novel molecular targeting approaches have been developed to improve the efficacy of therapeutics against IDH-mutated cancers. Here we provide an overview of the latest findings in IDH-mutated human malignancies, with a focus on glioma, discussing unique biological signatures and proceedings in translational research.
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Tiburcio PDB, Gillespie DL, Jensen RL, Huang LE. Extracellular glutamate and IDH1 R132H inhibitor promote glioma growth by boosting redox potential. J Neurooncol 2020; 146:427-437. [PMID: 32020473 DOI: 10.1007/s11060-019-03359-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 11/29/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE Somatic mutations of the isocitrate dehydrogenase 1 (IDH1) gene, mostly substituting Arg132 with histidine, are associated with better patient survival, but glioma recurrence and progression are nearly inevitable, resulting in disproportionate morbidity and mortality. Our previous studies demonstrated that in contrast to hemizygous IDH1R132H (loss of wild-type allele), heterozygous IDH1R132H is intrinsically glioma suppressive but its suppression of three-dimensional (3D) growth is negated by extracellular glutamate and reducing equivalent. This study sought to understand the importance of 3D culture in IDH1R132H biology and the underlying mechanism of the glutamate effect. METHODS RNA sequencing data of IDH1R132H-heterozygous and IDH1R132H-hemizygous glioma cells cultured under two-dimensional (2D) and 3D conditions were subjected to unsupervised hierarchal clustering and gene set enrichment analysis. IDH1R132H-heterozygous and IDH1R132H-hemizygous tumor growth were compared in subcutaneous and intracranial transplantations. Short-hairpin RNA against glutamate dehydrogenase 2 gene (GLUD2) expression was employed to determine the effects of glutamate and the mutant IDH1 inhibitor AGI-5198 on redox potential in IDH1R132H-heterozygous cells. RESULTS In contrast to IDH1R132H-heterozygous cells, 3D-cultured but not 2D-cultured IDH1R132H-hemizygous cells were clustered with more malignant gliomas, possessed the glioblastoma mesenchymal signature, and exhibited aggressive tumor growth. Although both extracellular glutamate and AGI-5198 stimulated redox potential for 3D growth of IDH1R132H-heterozygous cells, GLUD2 expression was required for glutamate, but not AGI-5198, stimulation. CONCLUSION 3D culture is more relevant to IDH1R132H glioma biology. The importance of redox homeostasis in IDH1R132H glioma suggests that metabolic pathway(s) can be explored for therapeutic targeting, whereas IDH1R132H inhibitors may have counterproductive consequences in patient treatment.
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Affiliation(s)
- Patricia D B Tiburcio
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT 84132, USA.,Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
| | - David L Gillespie
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT 84132, USA
| | - Randy L Jensen
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT 84132, USA.,Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
| | - L Eric Huang
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT 84132, USA. .,Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA.
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Huang LE. Friend or foe-IDH1 mutations in glioma 10 years on. Carcinogenesis 2019; 40:1299-1307. [PMID: 31504231 PMCID: PMC6875900 DOI: 10.1093/carcin/bgz134] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/02/2019] [Accepted: 07/25/2019] [Indexed: 12/11/2022] Open
Abstract
The identification of recurrent point mutations in the isocitrate dehydrogenase 1 (IDH1) gene, albeit in only a small percentage of glioblastomas a decade ago, has transformed our understanding of glioma biology, genomics and metabolism. More than 1000 scientific papers have been published since, propelling bench-to-bedside investigations that have led to drug development and clinical trials. The rapid biomedical advancement has been driven primarily by the realization of a neomorphic activity of IDH1 mutation that produces high levels of (d)-2-hydroxyglutarate, a metabolite believed to promote glioma initiation and progression through epigenetic and metabolic reprogramming. Thus, novel inhibitors of mutant IDH1 have been developed for therapeutic targeting. However, numerous clinical and experimental findings are at odds with this simple concept. By taking into consideration a large body of findings in the literature, this article analyzes how different approaches have led to opposing conclusions and proffers a counterintuitive hypothesis that IDH1 mutation is intrinsically tumor suppressive in glioma but functionally undermined by the glutamate-rich cerebral environment, inactivation of tumor-suppressor genes and IDH1 copy-number alterations. This theory also provides an explanation for some of the most perplexing observations, including the scarcity of proper model systems and the prevalence of IDH1 mutation in glioma.
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Affiliation(s)
- L Eric Huang
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT, USA
- Department of Oncological Science, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
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Chai Y, Liu W, Wang C, Rao M, Zhang Y. Prognostic Role of Chicken Ovalbumin Upstream Promoter Transcription Factor II in Isocitrate Dehydrogenase-Mutant Glioma with 1p19q Co-Deletion. J Mol Neurosci 2019; 68:234-242. [PMID: 30929126 DOI: 10.1007/s12031-019-01281-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/18/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Chicken ovalbumin upstream promoter transcription factor II is known to play a crucial role in the tumor microenvironment. However, the role of NR2F2 in gliomas is unknown. METHODS The genomic and clinical data of 530 cases of lower grade gliomas (LGGs) patients and 167 cases of glioblastoma (GBM) patients in The Cancer Genome Atlas (TCGA) were extracted for analysis. R2 and UCSC Xena browser were used for Kaplan-Meier survival in the GSE16011 dataset and TCGA dataset, respectively. GraphPad Prism 7 was used to compare the differences in NR2F2 expression between various groups and subtypes. RESULTS LGG patients with low NR2F2 expression had a significantly favorable outcome compared with those with high NR2F2 expression (p < 0.05). By matching histological subtypes and gene expression profiles of LGG patients, grade II glioma group showed lowest levels of NR2F2 expression compared with grade III gliomas and GBM. Patients diagnosed with astrocytoma have highest expression of NR2F2 but lowest OS (p < 0.05). In LGGs, NR2F2 expression was significantly downregulated in patient group with IDH mutation and 1p19q co-deletion (p < 0.05). CONCLUSION Our study suggests that NR2F2 can be used as a prognostic marker in LGG patients with IDH mutation and 1p19 co-deletion.
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Affiliation(s)
- Yi Chai
- School of Clinical Medicine and Department of Neurosurgery, Yuquan Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Wei Liu
- School of Clinical Medicine and Department of Neurosurgery, Yuquan Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Caixia Wang
- School of General Practice and Continuing Education, Capital Medical University, Beijing, China
| | - Minchao Rao
- Department of Oncology, Shangrao People Hospital, Shangrao, Jiangxi, China
| | - Yuqi Zhang
- School of Clinical Medicine and Department of Neurosurgery, Yuquan Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China. .,Department of Neurosurgery, Yuquan Hospital, Tsinghua University, No. 5 Shijingshan Road, Shijingshan District, Beijing, 100040, China.
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