Abstract:
Background:Molecular profile of glioblastoma multiforme (GBM) revealed 4 subtypes, 2 of which, proneural and mesenchymal, have been predominantly observed, with the latter displaying a more aggressive phenotype and increased therapeutic resistance. Single-cell RNA sequencing revealed that multiple subtypes actually reside within the same tumor, suggesting cellular heterogeneity in GBM. Further, plasticity between these 2 subtypes is observed during tumor recurrence and in response to radiation therapy. Methods:Patient-derived GBM stemlike cells were cultured as neurospheres. These cells were differentiated in serum by attaching to the culture dishes. The "floating" cells that were not attached/differentiated were harvested from the conditioned medium. The characteristics of these cells were studied with limiting dilution assays and immunofluorescence staining. Cell growth and nuclear factor-kappaB (NFkB) activation were monitored using bioluminescent assays as well as quantitative polymerase chain reaction and western blotting. In vivo tumorigenesis was evaluated in orthotopic xenograft models using bioluminescence imaging. Results:Patient-derived GBM stemlike cells undergo differentiation by attaching to the culture dish in serum-containing medium. We observed that a small subset of these cells escape this adhesion/differentiation and grow as floating cells. These cells displayed enhanced cancer stem cell properties with a molecular and phenotypic mesenchymal signature, including resistance to radiation and targeted therapies, a more aggressive tumor formation, and NFkB activation. Conclusion:Our results endorse inherent intratumor molecular subtype heterogeneity in glioblastoma and provide a valuable approach to study phenotypic plasticity, which could be applied to find novel therapeutic strategies to eradicate this aggressive tumor and can be extended to other cancer types.
journal_name
Neuro Oncoljournal_title
Neuro-oncologyauthors
Teng J,da Hora CC,Kantar RS,Nakano I,Wakimoto H,Batchelor TT,Chiocca EA,Badr CE,Tannous BAdoi
10.1093/neuonc/now253subject
Has Abstractpub_date
2017-06-01 00:00:00pages
820-832issue
6eissn
1522-8517issn
1523-5866pii
now253journal_volume
19pub_type
杂志文章相关文献
NEURO-ONCOLOGY文献大全abstract::The purpose of this study was to determine the dose-limiting toxicities, maximum tolerated dose, pharmacokinetics, and intratumor and brain distribution of motexafin gadolinium (MGd) with involved field radiation therapy in children with newly diagnosed intrinsic pontine gliomas. MGd was administered as a 5-min intrav...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/15228517-2008-043
更新日期:2008-10-01 00:00:00
abstract::The majority of meningiomas are probably benign but a number of tumors display considerable histological and/or clinical aggressivity, sometimes with unexpectedly high recurrence rates after radical removal. Understanding the potential behavior of these tumors in individual patients is critical for rational therapeuti...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/noq081
更新日期:2010-12-01 00:00:00
abstract:BACKGROUND:Altered expression of micro(mi)RNAs has been shown to be associated with tumorigenesis and tumor progression. The expression of phosphatase and tensin homolog (PTEN) plays an important role in glioma and is regarded as a prognostic marker of glioma patients. The goal of this study was to investigate the func...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/not107
更新日期:2013-11-01 00:00:00
abstract::The Atlas of Cancer Mortality in the United States, 1950-94 (Devesa et al.) published in 1999 by the National Institutes of Health suggests that there are elevated rates of brain and other nervous system cancer in the northwestern, north central, and southeastern parts of the country. Being descriptive in nature, the ...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/S1152851703000450
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND:Targeting immune checkpoint proteins has recently gained substantial attention due to the dramatic success of this strategy in clinical trials for some cancers. Inducible T-cell co-stimulator ligand (ICOSLG) is a member of the B7 family of immune regulatory ligands, expression of which in cancer is implicate...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/noz204
更新日期:2020-03-05 00:00:00
abstract::Histone modification has emerged as a promising approach to cancer therapy. We explored the in vivo efficacy of a butyric acid derivative, pivaloyloxymethyl butyrate (AN-9), for the treatment of gliomas. Relative to control and single-modality treatments, the combination of AN-9 and radiation significantly inhibited t...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/15228517-2006-032
更新日期:2007-04-01 00:00:00
abstract:BACKGROUND:Malignant glioma is an aggressive cancer requiring new therapeutic targets. MicroRNAs (miRNAs) regulate gene expression post transcriptionally and are implicated in cancer development and progression. Deregulated expressions of several miRNAs, specifically hsa-miR-184, correlate with glioma development. MET...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nou220
更新日期:2015-03-01 00:00:00
abstract::Anaplastic oligodendroglioma is a malignant brain tumor uniquely sensitive to treatment with both chemotherapy and radiotherapy. There are few prospective clinical trials for newly diagnosed patients and multiple approaches to the treatment of these patients. This study explored the recommended treatment offered by ex...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/15228517-2007-002
更新日期:2007-07-01 00:00:00
abstract::Multiphoton excitation fluorescent microscopy is a laser-based technology that allows subcellular resolution of native tissues in situ. We have recently applied this technology to the structural and photochemical imaging of cultured glioma cells and experimental gliomas ex vivo. We demonstrated that high microanatomic...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/15228517-2006-034
更新日期:2007-04-01 00:00:00
abstract::In photodynamic diagnosis, 5-aminolevulinic acid (5-ALA) is widely used for the fluorescence-guided resection of malignant brain tumors, where 5-ALA is converted to protoporphyrin IX, which exhibits strong fluorescence. Little is known, however, about the detailed molecular mechanisms underlying 5-ALA-induced fluoresc...
journal_title:Neuro-oncology
pub_type: 杂志文章,收录出版
doi:10.1093/neuonc/nor116
更新日期:2011-11-01 00:00:00
abstract::Radiotherapy is ubiquitous in the treatment of patients with both primary brain tumors as well as disease which is metastatic to the brain. This therapy is not without cost, however, as cognitive decline is frequently associated with cranial radiation, particularly with whole brain radiotherapy (WBRT). The precise mec...
journal_title:Neuro-oncology
pub_type: 杂志文章,评审
doi:10.1093/neuonc/nox195
更新日期:2018-04-09 00:00:00
abstract:BACKGROUND:Previous pilot studies have shown the feasibility of preoperative chemotherapy in patients with medulloblastoma, but benefits and risks compared with initial surgery have not been assessed. METHODS:Two therapeutic strategies were retrospectively compared in 92 patients with metastatic medulloblastoma treate...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/noaa083
更新日期:2020-11-26 00:00:00
abstract::The purpose of this study was to evaluate the activity of single-agent bevacizumab in patients with recurrent anaplastic glioma and assess correlative advanced imaging parameters. Patients with recurrent anaplastic glioma were treated with bevacizumab 10 mg/kg every 2 weeks. Complete patient evaluations were repeated ...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nor091
更新日期:2011-10-01 00:00:00
abstract:BACKGROUND:Isocitrate dehydrogenase (IDH) mutation status has emerged as an important prognostic marker in gliomas. Currently, reliable IDH mutation determination requires invasive surgical procedures. The purpose of this study was to develop a highly accurate, MRI-based, voxelwise deep-learning IDH classification netw...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/noz199
更新日期:2020-03-05 00:00:00
abstract::Carmustine is used in the treatment of glioblastomas as locally applied chemotherapy in the form of biodegradable wafers, which are lined on the walls of the resection cavity at the end of the resection, to increase local concentrations and decrease systemic toxicity. A total of 44 patients with glioblastoma with gros...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nos003
更新日期:2012-04-01 00:00:00
abstract::In patients with parenchymal brain masses of uncertain origin responsive to corticosteroids, primary CNS lymphoma (PCNSL) should be considered. PCNSL is a rare but aggressive brain tumor that is highly sensitive to high-dose methotrexate (HDMTX)-based chemotherapy. We report a series of six patients with brain masses ...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/15228517-2006-037
更新日期:2007-04-01 00:00:00
abstract:BACKGROUND:Primary central nervous system lymphomas, predominantly diffuse large B-cell lymphomas (PCNS-DLBCL), are aggressive malignancies, and no histopathological variables with independent prognostic value are currently available. The aim of this study is to determine the prognostic value of histopathological varia...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/not012
更新日期:2013-06-01 00:00:00
abstract::This study estimated the maximum tolerated dose (MTD) of imatinib with irradiation in children with newly diagnosed brainstem gliomas, and those with recurrent malignant intracranial gliomas, stratified according to use of enzyme-inducing anticonvulsant drugs (EIACDs). In the brainstem glioma stratum, imatinib was ini...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/15228517-2006-031
更新日期:2007-04-01 00:00:00
abstract:BACKGROUND:Detection of glioma with MRI contrast agent is limited to cases in which the blood-brain barrier (BBB) is compromised as contrast agents cannot cross the BBB. Thus, an early-stage infiltrating tumor is not detectable. Interleukin-13 receptor alpha 2 (IL-13Rα2), which has been shown to be overexpressed in gli...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nov263
更新日期:2016-05-01 00:00:00
abstract::Tobacco products are major contributors of exogenous N-nitroso compounds, a group of potent neurocarcinogens. Overall results from studies of smoking and brain tumors have been null, but have provided little information on duration, age at smoking initiation, and latency. We prospectively examined the relation between...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/15228517-2007-005
更新日期:2007-07-01 00:00:00
abstract:BACKGROUND:Diffuse intrinsic pontine glioma (DIPG) is associated with poor survival regardless of therapy. We used volumetric apparent diffusion coefficient (ADC) histogram metrics to determine associations with progression-free survival (PFS) and overall survival (OS) at baseline and after radiation therapy (RT). MET...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nov256
更新日期:2016-05-01 00:00:00
abstract::The objective of this study was to evaluate whether longitudinal levels of serum YKL-40 correlate with disease status or survival in adults with gliomas. Patients with histologically confirmed gliomas were eligible for this longitudinal study. Serum samples were collected prospectively and concurrently with MRI scans ...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nor117
更新日期:2011-11-01 00:00:00
abstract::Angiogenesis plays a key role in glioblastoma biology and antiangiogenic agents are under clinical investigation with promising results. However, the angiogenic profiles of patients with glioblastoma and their clinical significance are not well understood. Here we characterize the serum angiogenic profile of patients ...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/noq170
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:EORTC study 22033-26033 showed no difference in progression-free survival between high-risk low-grade glioma receiving either radiotherapy (RT) or Temozolomide (TMZ) chemotherapy alone as primary treatment. Considering the potential long-term deleterious impact of radiotherapy on memory functioning, this stu...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/noaa252
更新日期:2020-11-01 00:00:00
abstract::Survivorship has become a significant topic within oncologic care. The tools and means by which the provision of survivorship care can be implemented and delivered are in development and are the focus of significant research oncology-wide. These tools and methods include innovations of survivorship care delivery, surv...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/noy110
更新日期:2018-11-09 00:00:00
abstract::To determine racial and ethnic differences in incidence and survival in patients with primary central nervous system lymphoma (PCNSL), NCI Surveillance, Epidemiology, and End Results (SEER) program data from 1992 to 2002 were queried. Data were substratified by age (20-49 years vs. 50 or above) and race (White, Black,...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1215/15228517-2008-103
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:No reliable estimates are available on the incidence of brain metastasis (BM) in cancer patients. This information is valuable for planning patient care and developing measures that may prevent or decrease the likelihood of metastatic brain disease. METHODS:We report the first population-based analysis on B...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nou099
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:The influence of survivin isoforms on outcome in glioblastoma is poorly understood. We analyzed the dominant anti-apoptotic transcript variants of survivin using expression data and modeled them in vivo to determine their impact on glioma formation and progression. METHODS:Using data from low- and high-grad...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nou034
更新日期:2014-09-01 00:00:00
abstract:BACKGROUND:We report a phase I study to examine the pharmacokinetics, safety, and recommended dosage of weekly intravenous bolus 5-fluorouracil (5-FU) in children and young adults with recurrent ependymoma. METHODS:Patients 22 years of age or less with recurrent ependymoma were treated with bolus dosage 5-FU weekly fo...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/nov181
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:Diffuse intrinsic pontine gliomas (DIPGs) are highly lethal childhood brain tumors. Their unique genetic makeup, pathological heterogeneity, and brainstem location all present challenges to treatment. Developing mouse models that accurately reflect each of these distinct features will be critical to advance ...
journal_title:Neuro-oncology
pub_type: 杂志文章
doi:10.1093/neuonc/noz197
更新日期:2020-03-05 00:00:00