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Ding Y, Zhang ZY, Ezhilarasan R, Modrek AS, Karp J, Sulman EP. Abstract 2819: Genome-wide CRISPR screen identifies NANP as a radio-sensitizing target of GBM by regulating NF-κB pathway. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-2819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Glioblastoma multiforme (GBM) are the most malignant primary central nervous system tumors. The standard of care for newly diagnosed GBM patients includes surgery followed by combined radiation therapy (RT) and adjuvant temozolomide (TMZ) therapy. However, one of the therapeutic challenges is the inevitable resistance and recurrence after radiotherapy. Glioblastoma stem cells (GSC) are tumor initiating cells for GBM and plays key roles in radio resistance. Thus, we performed a genome-wide CRISPR screen using a radiation resistant GSC to identify potential RT sensitizing targets. We identified 139 potential RT sensitizing targets with a filter for only those genes associated with a greater than 2-fold reduction in representation with a p<0.05. There were 22 genes with a direct function in key DNA double-strand break repair pathways including 5 genes central to non-homologous end-joining (NHEJ1, XLF, PRKDC, DCLRE1C, XRCC4, LIG4), 6 genes involved in homologous recombination (RAD51D, CYREN, ATM, TONSL, BRCA2, RFWD3), and 7 genes central to initial DNA damage sensing (RNF8, RNF168, TP53BP1, RAD17, FOXM1, RAD9A, RAD1). These results are consistent with the crucial role of DNA repair following radiation exposure and demonstrate the success of the screening. Besides that, one of the top hits is NANP (N-acylneuraminate-9-phosphatase), which is involved in sialic acid synthetic pathway. Knocking down of NANP causes more G2/M arrest followed by apoptosis after radiation. γH2A.X staining and comet assay shows more DNA damage in NANP knock down cells after radiation. Transcriptome analysis reveals NANP inhibition restrain mesenchymal status and NF-κB pathway activation. Furthermore, activation of NF-κB pathway could rescue the RT-induced G2/M arrest of NANP knock down cells. TCGA and CGGA dataset shows NANP is highly expressed in GBM patients and patients with NANP high expression have poorer survival. In conclusion, our study identified NANP as a novel radio-sensitizing target for glioblastoma by regulating NF-κB pathway and mesenchymal status of GSCs.
Citation Format: Yingwen Ding, Ze-Yan Zhang, Ravesanker Ezhilarasan, Aram S. Modrek, Jerome Karp, Erik P. Sulman. Genome-wide CRISPR screen identifies NANP as a radio-sensitizing target of GBM by regulating NF-κB pathway [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 2819.
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Zhang ZY, Ding Y, Ezhilarasan R, Lhakhang T, Wang Q, Yang J, Modrek AS, Zhang H, Tsirigos A, Futreal A, Draetta GF, Verhaak RGW, Sulman EP. Lineage-coupled clonal capture identifies clonal evolution mechanisms and vulnerabilities of BRAF V600E inhibition resistance in melanoma. Cell Discov 2022; 8:102. [PMID: 36202798 PMCID: PMC9537441 DOI: 10.1038/s41421-022-00462-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/24/2022] [Indexed: 11/09/2022] Open
Abstract
Targeted cancer therapies have revolutionized treatment but their efficacies are limited by the development of resistance driven by clonal evolution within tumors. We developed "CAPTURE", a single-cell barcoding approach to comprehensively trace clonal dynamics and capture live lineage-coupled resistant cells for in-depth multi-omics analysis and functional exploration. We demonstrate that heterogeneous clones, either preexisting or emerging from drug-tolerant persister cells, dominated resistance to vemurafenib in BRAFV600E melanoma. Further integrative studies uncovered diverse resistance mechanisms. This includes a previously unrecognized and clinically relevant mechanism, chromosome 18q21 gain, which leads to vulnerability of the cells to BCL2 inhibitor. We also identified targetable common dependencies of captured resistant clones, such as oxidative phosphorylation and E2F pathways. Our study provides new therapeutic insights into overcoming therapy resistance in BRAFV600E melanoma and presents a platform for exploring clonal evolution dynamics and vulnerabilities that can be applied to study treatment resistance in other cancers.
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Affiliation(s)
- Ze-Yan Zhang
- Department of Radiation Oncology, New York University (NYU) Grossman School of Medicine, New York, NY, USA. .,Brain and Spine Tumor Center, Laura and Isaac Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA.
| | - Yingwen Ding
- Department of Radiation Oncology, New York University (NYU) Grossman School of Medicine, New York, NY, USA.,Brain and Spine Tumor Center, Laura and Isaac Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Ravesanker Ezhilarasan
- Department of Radiation Oncology, New York University (NYU) Grossman School of Medicine, New York, NY, USA.,Brain and Spine Tumor Center, Laura and Isaac Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Tenzin Lhakhang
- Applied Bioinformatics Laboratories, NYU Grossman School of Medicine, New York, NY, USA
| | - Qianghu Wang
- Department of Bioinformatics, Nanjing Medical University, Nanjing, Jiangsu, China.,Institute for Brain Tumors, Jiangsu Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.,Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing, Jiangsu, China
| | - Jie Yang
- Department of Radiation Oncology, New York University (NYU) Grossman School of Medicine, New York, NY, USA.,Brain and Spine Tumor Center, Laura and Isaac Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Aram S Modrek
- Department of Radiation Oncology, New York University (NYU) Grossman School of Medicine, New York, NY, USA.,Brain and Spine Tumor Center, Laura and Isaac Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Hua Zhang
- Laura and Isaac Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Aristotelis Tsirigos
- Applied Bioinformatics Laboratories, NYU Grossman School of Medicine, New York, NY, USA
| | - Andrew Futreal
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Giulio F Draetta
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Roel G W Verhaak
- Department of Computational Biology, The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
| | - Erik P Sulman
- Department of Radiation Oncology, New York University (NYU) Grossman School of Medicine, New York, NY, USA. .,Brain and Spine Tumor Center, Laura and Isaac Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA.
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Modrek AS, Eskilsson E, Ezhilarasan R, Wang Q, Goodman LD, Ding Y, Zhang ZY, Bhat KPL, Le TTT, Barthel FP, Tang M, Yang J, Long L, Gumin J, Lang FF, Verhaak RGW, Aldape KD, Sulman EP. PDPN marks a subset of aggressive and radiation-resistant glioblastoma cells. Front Oncol 2022; 12:941657. [PMID: 36059614 PMCID: PMC9434399 DOI: 10.3389/fonc.2022.941657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/12/2022] [Indexed: 11/13/2022] Open
Abstract
Treatment-resistant glioma stem cells are thought to propagate and drive growth of malignant gliomas, but their markers and our ability to target them specifically are not well understood. We demonstrate that podoplanin (PDPN) expression is an independent prognostic marker in gliomas across multiple independent patient cohorts comprising both high- and low-grade gliomas. Knockdown of PDPN radiosensitized glioma cell lines and glioma-stem-like cells (GSCs). Clonogenic assays and xenograft experiments revealed that PDPN expression was associated with radiotherapy resistance and tumor aggressiveness. We further demonstrate that knockdown of PDPN in GSCs in vivo is sufficient to improve overall survival in an intracranial xenograft mouse model. PDPN therefore identifies a subset of aggressive, treatment-resistant glioma cells responsible for radiation resistance and may serve as a novel therapeutic target.
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Affiliation(s)
- Aram S. Modrek
- Department of Radiation Oncology, New York University (NYU) Langone School of Medicine, New York, NY, United States
| | - Eskil Eskilsson
- Department of Genomic Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Ravesanker Ezhilarasan
- Department of Radiation Oncology, New York University (NYU) Langone School of Medicine, New York, NY, United States
| | - Qianghu Wang
- Department of Bioinformatics, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lindsey D. Goodman
- Duncan Neurological Research Institute, Baylor College of Medicine, Houston, TX, United States
| | - Yingwen Ding
- Department of Radiation Oncology, New York University (NYU) Langone School of Medicine, New York, NY, United States
| | - Ze-Yan Zhang
- Department of Radiation Oncology, New York University (NYU) Langone School of Medicine, New York, NY, United States
| | - Krishna P. L. Bhat
- Department of Translational Molecular Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Thanh-Thuy T. Le
- Department of Anesthesiology, University of Texas Medical School, Houston, TX, United States
| | | | - Ming Tang
- Department of Genomic Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Jie Yang
- Department of Radiation Oncology, New York University (NYU) Langone School of Medicine, New York, NY, United States
| | - Lihong Long
- Department of Neurosurgery, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Joy Gumin
- Department of Neurosurgery, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Frederick F. Lang
- Department of Neurosurgery, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | | | - Kenneth D. Aldape
- Center for Cancer Research, National Cancer Institute, Bethesda, MD, United States
| | - Erik P. Sulman
- Department of Radiation Oncology, New York University (NYU) Langone School of Medicine, New York, NY, United States
- New York University (NYU) Langone Laura and Isaac Perlmutter Cancer Center, New York, NY, United States
- *Correspondence: Erik P. Sulman,
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Modrek AS, Karp JM, Byun D, Gerber NK, Abdul-Hay M, Al-Homsi AS, Galavis P, Teruel J, Yuan Y. Pulmonary toxicity following myeloablative conditioning with total body irradiation delivered via volumetric modulated arc therapy with fludarabine. Pract Radiat Oncol 2022; 12:e476-e480. [DOI: 10.1016/j.prro.2022.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/04/2022] [Indexed: 10/18/2022]
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Byun DJ, Modrek AS, Sulman EP. Insight into the public's interest in tumour treating fields. Br J Cancer 2021; 125:901-903. [PMID: 34316021 DOI: 10.1038/s41416-021-01504-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/28/2021] [Accepted: 07/19/2021] [Indexed: 11/09/2022] Open
Affiliation(s)
- David J Byun
- Department of Radiation Oncology, NYU Grossman School of Medicine, New York, NY, USA.
| | - Aram S Modrek
- Department of Radiation Oncology, NYU Grossman School of Medicine, New York, NY, USA
| | - Erik P Sulman
- Department of Radiation Oncology, NYU Grossman School of Medicine, New York, NY, USA.,Brain and Spine Tumor Center, Laura and Isaac Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
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Purswani JM, McCarthy AK, Modrek AS, Smith B, Sorensen A, Jennings GT, Cerfolio R, Perez K, Barbee D, Duckworth T, Zervos M, Cooper BT. PO53. Brachytherapy 2021. [DOI: 10.1016/j.brachy.2021.06.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Modrek AS, Tanese N, Placantonakis DG, Sulman EP, Rivera R, Du KL, Gerber NK, David G, Chesler M, Philips MR, Cangiarella J. Breaking Tradition to Bridge Bench and Bedside: Accelerating the MD-PhD-Residency Pathway. Acad Med 2021; 96:518-521. [PMID: 33464738 DOI: 10.1097/acm.0000000000003920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
PROBLEM Physician-scientists are individuals trained in both clinical practice and scientific research. Often, the goal of physician-scientist training is to address pressing questions in biomedical research. The established pathways to formally train such individuals are mainly MD-PhD programs and physician-scientist track residencies. Although graduates of these pathways are well equipped to be physician-scientists, numerous factors, including funding and length of training, discourage application to such programs and impede success rates. APPROACH To address some of the pressing challenges in training and retaining burgeoning physician-scientists, New York University Grossman School of Medicine formed the Accelerated MD-PhD-Residency Pathway in 2016. This pathway builds on the previously established accelerated 3-year MD pathway to residency at the same institution. The Accelerated MD-PhD-Residency Pathway conditionally accepts MD-PhD trainees to a residency position at the same institution through the National Resident Matching Program. OUTCOMES Since its inception, 2 students have joined the Accelerated MD-PhD-Residency Pathway, which provides protected research time in their chosen residency. The pathway reduces the time to earn an MD and PhD by 1 year and reduces the MD training phase to 3 years, reducing the cost and lowering socioeconomic barriers. Remaining at the same institution for residency allows for the growth of strong research collaborations and mentoring opportunities, which foster success. NEXT STEPS The authors and institutional leaders plan to increase the number of trainees who are accepted into the Accelerated MD-PhD-Residency Pathway and track the success of these students through residency and into practice to determine if the pathway is meeting its goal of increasing the number of practicing physician-scientists. The authors hope this model can serve as an example to leaders at other institutions who may wish to adopt this pathway for the training of their MD-PhD students.
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Affiliation(s)
- Aram S Modrek
- A.S. Modrek is a resident, Department of Radiation Oncology, and graduate, the Accelerated MD-PhD-Residency Pathway, New York University Grossman School of Medicine, New York, New York; ORCID: https://orcid.org/0000-0001-7586-9833
| | - Naoko Tanese
- N. Tanese is associate dean, Biomedical Sciences, professor of microbiology, and director, Vilcek Institute of Graduate Biomedical Sciences, New York University Grossman School of Medicine, New York, New York
| | - Dimitris G Placantonakis
- D.G. Placantonakis is associate professor of neurosurgery, New York University Grossman School of Medicine, New York, New York
| | - Erik P Sulman
- E.P. Sulman is professor of radiation oncology, and codirector, the Medical Scientist Training Program, New York University Grossman School of Medicine, New York, New York
| | - Rafael Rivera
- R. Rivera Jr is associate dean, Admissions and Financial Aid, and associate professor of radiology, New York University Grossman School of Medicine, New York, New York
| | - Kevin L Du
- K.L. Du is associate professor of radiation oncology and residency program director, Radiation Oncology, New York University Grossman School of Medicine, New York, New York
| | - Naamit K Gerber
- N.K. Gerber is assistant professor of radiation oncology and associate residency program director, Radiation Oncology, New York University Grossman School of Medicine, New York, New York
| | - Gregory David
- G. David is associate professor of biochemistry and molecular pharmacology, and codirector, the Medical Scientist Training Program, New York University Grossman School of Medicine, New York, New York
| | - Mitchell Chesler
- M. Chesler is professor of neurosurgery, neuroscience, and physiology, and codirector, the Medical Scientist Training Program, New York University Grossman School of Medicine, New York, New York
| | - Mark R Philips
- M.R. Philips is professor of medicine, cell biology, biochemistry, and molecular pharmacology, director, the Medical Scientist Training Program, and associate director, Education, Perlmutter Cancer Center, New York University Grossman School of Medicine, New York, New York; ORCID: https://orcid.org/0000-0002-1179-8156
| | - Joan Cangiarella
- J. Cangiarella is associate dean, Education and Faculty, associate professor of pathology, and director, the Accelerated 3-Year MD Pathway, New York University Grossman School of Medicine, New York, New York; ORCID: https://orcid.org/0000-0002-9364-2672
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Golub D, Iyengar N, Dogra S, Wong T, Bready D, Tang K, Modrek AS, Placantonakis DG. Mutant Isocitrate Dehydrogenase Inhibitors as Targeted Cancer Therapeutics. Front Oncol 2019; 9:417. [PMID: 31165048 PMCID: PMC6534082 DOI: 10.3389/fonc.2019.00417] [Citation(s) in RCA: 164] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 05/02/2019] [Indexed: 12/15/2022] Open
Abstract
The identification of heterozygous neomorphic isocitrate dehydrogenase (IDH) mutations across multiple cancer types including both solid and hematologic malignancies has revolutionized our understanding of oncogenesis in these malignancies and the potential for targeted therapeutics using small molecule inhibitors. The neomorphic mutation in IDH generates an oncometabolite product, 2-hydroxyglutarate (2HG), which has been linked to the disruption of metabolic and epigenetic mechanisms responsible for cellular differentiation and is likely an early and critical contributor to oncogenesis. In the past 2 years, two mutant IDH (mutIDH) inhibitors, Enasidenib (AG-221), and Ivosidenib (AG-120), have been FDA-approved for IDH-mutant relapsed or refractory acute myeloid leukemia (AML) based on phase 1 safety and efficacy data and continue to be studied in trials in hematologic malignancies, as well as in glioma, cholangiocarcinoma, and chondrosarcoma. In this review, we will summarize the molecular pathways and oncogenic consequences associated with mutIDH with a particular emphasis on glioma and AML, and systematically review the development and preclinical testing of mutIDH inhibitors. Existing clinical data in both hematologic and solid tumors will likewise be reviewed followed by a discussion on the potential limitations of mutIDH inhibitor monotherapy and potential routes for treatment optimization using combination therapy.
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Affiliation(s)
- Danielle Golub
- Department of Neurosurgery, New York University School of Medicine, NYU Langone Health, New York, NY, United States.,Clinical and Translational Science Institute, New York University School of Medicine, NYU Langone Health, New York, NY, United States
| | - Nishanth Iyengar
- New York University School of Medicine, NYU Langone Health, New York, NY, United States
| | - Siddhant Dogra
- New York University School of Medicine, NYU Langone Health, New York, NY, United States
| | - Taylor Wong
- Department of Neurosurgery, New York University School of Medicine, NYU Langone Health, New York, NY, United States
| | - Devin Bready
- Department of Neurosurgery, New York University School of Medicine, NYU Langone Health, New York, NY, United States
| | - Karen Tang
- Clinical and Translational Science Institute, New York University School of Medicine, NYU Langone Health, New York, NY, United States.,Division of Hematology/Oncology, Department of Pediatrics, New York University School of Medicine, NYU Langone Health, New York, NY, United States
| | - Aram S Modrek
- Department of Radiation Oncology, New York University School of Medicine, NYU Langone Health, New York, NY, United States
| | - Dimitris G Placantonakis
- Department of Neurosurgery, New York University School of Medicine, NYU Langone Health, New York, NY, United States.,Kimmel Center for Stem Cell Biology, New York University School of Medicine, NYU Langone Health, New York, NY, United States.,Laura and Isaac Perlmutter Cancer Center, New York University School of Medicine, NYU Langone Health, New York, NY, United States.,Brain Tumor Center, New York University School of Medicine, NYU Langone Health, New York, NY, United States.,Neuroscience Institute, New York University School of Medicine, NYU Langone Health, New York, NY, United States
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Modrek AS, Prado J, Bready D, Dhaliwal J, Golub D, Placantonakis DG. Modeling Glioma with Human Embryonic Stem Cell-Derived Neural Lineages. Methods Mol Biol 2018; 1741:227-237. [PMID: 29392705 DOI: 10.1007/978-1-4939-7659-1_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Gliomas are malignant primary tumors of the central nervous system. Their cell-of-origin is thought to be a neural progenitor or stem cell that acquires mutations leading to oncogenic transformation. Thanks to advances in human stem cell biology, it has become possible to derive human cell types that represent putative cells-of-origin in vitro and model the gliomagenesis process by systematically introducing genetic alterations in these human cells. Here, we present methods to derive human neural stem cells (NSCs) from human embryonic stem cells (hESCs). Because these NSCs are genetically unmodified at baseline, they can be used as a cellular platform to study the effects of individual oncogenic hits in a well-controlled manner in the backdrop of a human genetic background. We also present some key applications of these NSCs, which include their transduction with lentiviral vectors, their neuroglial differentiation and xenografting methods into immunocompromised mice to assess in vivo behavior.
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Affiliation(s)
- Aram S Modrek
- Department of Neurosurgery, NYU School of Medicine, New York, NY, USA
| | - Jod Prado
- Department of Neurosurgery, NYU School of Medicine, New York, NY, USA
| | - Devin Bready
- Department of Neurosurgery, NYU School of Medicine, New York, NY, USA
| | - Joravar Dhaliwal
- Department of Neurosurgery, NYU School of Medicine, New York, NY, USA
| | - Danielle Golub
- Department of Neurosurgery, NYU School of Medicine, New York, NY, USA
| | - Dimitris G Placantonakis
- Department of Neurosurgery, NYU School of Medicine, New York, NY, USA. .,Kimmel Center for Stem Cell Biology, NYU School of Medicine, New York, NY, USA. .,Laura and Isaac Perlmutter Cancer Center, NYU School of Medicine, New York, NY, USA. .,Brain Tumor Center, NYU School of Medicine, New York, NY, USA. .,Neuroscience Institute, NYU School of Medicine, New York, NY, USA.
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Stafford JM, Lee CH, Voigt P, Descostes N, Saldaña-Meyer R, Yu JR, Leroy G, Oksuz O, Chapman JR, Suarez F, Modrek AS, Bayin NS, Placantonakis DG, Karajannis MA, Snuderl M, Ueberheide B, Reinberg D. Multiple modes of PRC2 inhibition elicit global chromatin alterations in H3K27M pediatric glioma. Sci Adv 2018; 4:eaau5935. [PMID: 30402543 PMCID: PMC6209383 DOI: 10.1126/sciadv.aau5935] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 09/27/2018] [Indexed: 05/17/2023]
Abstract
A methionine substitution at lysine-27 on histone H3 variants (H3K27M) characterizes ~80% of diffuse intrinsic pontine gliomas (DIPG) and inhibits polycomb repressive complex 2 (PRC2) in a dominant-negative fashion. Yet, the mechanisms for this inhibition and abnormal epigenomic landscape have not been resolved. Using quantitative proteomics, we discovered that robust PRC2 inhibition requires levels of H3K27M greatly exceeding those of PRC2, seen in DIPG. While PRC2 inhibition requires interaction with H3K27M, we found that this interaction on chromatin is transient, with PRC2 largely being released from H3K27M. Unexpectedly, inhibition persisted even after PRC2 dissociated from H3K27M-containing chromatin, suggesting a lasting impact on PRC2. Furthermore, allosterically activated PRC2 is particularly sensitive to H3K27M, leading to the failure to spread H3K27me from PRC2 recruitment sites and consequently abrogating PRC2's ability to establish H3K27me2-3 repressive chromatin domains. In turn, levels of polycomb antagonists such as H3K36me2 are elevated, suggesting a more global, downstream effect on the epigenome. Together, these findings reveal the conditions required for H3K27M-mediated PRC2 inhibition and reconcile seemingly paradoxical effects of H3K27M on PRC2 recruitment and activity.
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Affiliation(s)
- James M. Stafford
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Chul-Hwan Lee
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Philipp Voigt
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
| | - Nicolas Descostes
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Ricardo Saldaña-Meyer
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Jia-Ray Yu
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Gary Leroy
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Ozgur Oksuz
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | | | - Fernando Suarez
- Laura and Isaac Perlmutter Cancer Center, NYUSoM, New York, NY, USA
- Department of Pediatrics, NYUSoM, New York, NY, USA
| | - Aram S. Modrek
- Laura and Isaac Perlmutter Cancer Center, NYUSoM, New York, NY, USA
- Department of Neurosurgery, NYUSoM, New York, NY, USA
| | - N. Sumru Bayin
- Laura and Isaac Perlmutter Cancer Center, NYUSoM, New York, NY, USA
- Department of Neurosurgery, NYUSoM, New York, NY, USA
| | - Dimitris G. Placantonakis
- Laura and Isaac Perlmutter Cancer Center, NYUSoM, New York, NY, USA
- Department of Neurosurgery, NYUSoM, New York, NY, USA
- Kimmel Center for Stem Cell Biology, NYUSoM, New York, NY, USA
- Neuroscience Institute, NYUSoM, New York, NY, USA
| | - Matthias A. Karajannis
- Laura and Isaac Perlmutter Cancer Center, NYUSoM, New York, NY, USA
- Department of Pediatrics, NYUSoM, New York, NY, USA
| | - Matija Snuderl
- Laura and Isaac Perlmutter Cancer Center, NYUSoM, New York, NY, USA
- Department of Pathology, Division of Neuropathology, NYUSoM, New York, NY, USA
| | - Beatrix Ueberheide
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Proteomics Laboratory, NYUSoM, New York, NY, USA
| | - Danny Reinberg
- Department of Biochemistry and Molecular Pharmacology, NYUSoM, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
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Modrek AS, Golub D, Khan T, Bready D, Prado J, Bowman C, Deng J, Zhang G, Rocha PP, Raviram R, Lazaris C, Stafford JM, LeRoy G, Kader M, Dhaliwal J, Bayin NS, Frenster JD, Serrano J, Chiriboga L, Baitalmal R, Nanjangud G, Chi AS, Golfinos JG, Wang J, Karajannis MA, Bonneau RA, Reinberg D, Tsirigos A, Zagzag D, Snuderl M, Skok JA, Neubert TA, Placantonakis DG. Low-Grade Astrocytoma Mutations in IDH1, P53, and ATRX Cooperate to Block Differentiation of Human Neural Stem Cells via Repression of SOX2. Cell Rep 2018; 21:1267-1280. [PMID: 29091765 DOI: 10.1016/j.celrep.2017.10.009] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 08/24/2017] [Accepted: 10/02/2017] [Indexed: 02/07/2023] Open
Abstract
Low-grade astrocytomas (LGAs) carry neomorphic mutations in isocitrate dehydrogenase (IDH) concurrently with P53 and ATRX loss. To model LGA formation, we introduced R132H IDH1, P53 shRNA, and ATRX shRNA into human neural stem cells (NSCs). These oncogenic hits blocked NSC differentiation, increased invasiveness in vivo, and led to a DNA methylation and transcriptional profile resembling IDH1 mutant human LGAs. The differentiation block was caused by transcriptional silencing of the transcription factor SOX2 secondary to disassociation of its promoter from a putative enhancer. This occurred because of reduced binding of the chromatin organizer CTCF to its DNA motifs and disrupted chromatin looping. Our human model of IDH mutant LGA formation implicates impaired NSC differentiation because of repression of SOX2 as an early driver of gliomagenesis.
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Affiliation(s)
- Aram S Modrek
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA
| | - Danielle Golub
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA
| | - Themasap Khan
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA
| | - Devin Bready
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA
| | - Jod Prado
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA
| | - Christopher Bowman
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA
| | - Jingjing Deng
- Department of Cell Biology, NYU School of Medicine, New York, NY 10016, USA
| | - Guoan Zhang
- Department of Cell Biology, NYU School of Medicine, New York, NY 10016, USA
| | - Pedro P Rocha
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA
| | - Ramya Raviram
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA
| | - Charalampos Lazaris
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA; Applied Bioinformatics Center, NYU School of Medicine, New York, NY 10016, USA
| | - James M Stafford
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA
| | - Gary LeRoy
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA
| | - Michael Kader
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA
| | - Joravar Dhaliwal
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA
| | - N Sumru Bayin
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA; Kimmel Center for Stem Cell Biology, NYU School of Medicine, New York, NY 10016, USA
| | - Joshua D Frenster
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA; Kimmel Center for Stem Cell Biology, NYU School of Medicine, New York, NY 10016, USA
| | - Jonathan Serrano
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA
| | - Luis Chiriboga
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA
| | - Rabaa Baitalmal
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA
| | - Gouri Nanjangud
- Molecular Cytogenetics Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Andrew S Chi
- Department of Neurology, NYU School of Medicine, New York, NY 10016, USA; Laura and Isaac Perlmutter Cancer Center, NYU School of Medicine, New York, NY 10016, USA; Brain Tumor Center, NYU School of Medicine, New York, NY 10016, USA
| | - John G Golfinos
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA; Laura and Isaac Perlmutter Cancer Center, NYU School of Medicine, New York, NY 10016, USA; Brain Tumor Center, NYU School of Medicine, New York, NY 10016, USA
| | - Jing Wang
- Department of Anesthesiology, NYU School of Medicine, New York, NY 10016, USA
| | - Matthias A Karajannis
- Department of Pediatrics, NYU School of Medicine, New York, NY 10016, USA; Department of Otolaryngology, NYU School of Medicine, New York, NY 10016, USA
| | - Richard A Bonneau
- Department of Biology, New York University, New York, New York, 10003, USA; Department of Computer Science, New York University, New York, New York, 10003, USA; Simons Center for Data Analysis, New York, NY 10010, USA
| | - Danny Reinberg
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA; Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA
| | - Aristotelis Tsirigos
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA; Applied Bioinformatics Center, NYU School of Medicine, New York, NY 10016, USA
| | - David Zagzag
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA; Department of Pathology, NYU School of Medicine, New York, NY 10016, USA; Laura and Isaac Perlmutter Cancer Center, NYU School of Medicine, New York, NY 10016, USA; Brain Tumor Center, NYU School of Medicine, New York, NY 10016, USA
| | - Matija Snuderl
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA; Department of Neurology, NYU School of Medicine, New York, NY 10016, USA; Brain Tumor Center, NYU School of Medicine, New York, NY 10016, USA
| | - Jane A Skok
- Department of Pathology, NYU School of Medicine, New York, NY 10016, USA
| | - Thomas A Neubert
- Department of Cell Biology, NYU School of Medicine, New York, NY 10016, USA
| | - Dimitris G Placantonakis
- Department of Neurosurgery, NYU School of Medicine, New York, NY 10016, USA; Kimmel Center for Stem Cell Biology, NYU School of Medicine, New York, NY 10016, USA; Laura and Isaac Perlmutter Cancer Center, NYU School of Medicine, New York, NY 10016, USA; Brain Tumor Center, NYU School of Medicine, New York, NY 10016, USA; Neuroscience Institute, NYU School of Medicine, New York, NY 10016, USA.
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12
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Pourchet A, Modrek AS, Placantonakis DG, Mohr I, Wilson AC. Modeling HSV-1 Latency in Human Embryonic Stem Cell-Derived Neurons. Pathogens 2017; 6:E24. [PMID: 28594343 PMCID: PMC5488658 DOI: 10.3390/pathogens6020024] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/02/2017] [Accepted: 06/06/2017] [Indexed: 12/28/2022] Open
Abstract
Herpes simplex virus 1 (HSV-1) uses latency in peripheral ganglia to persist in its human host, however, recurrent reactivation from this reservoir can cause debilitating and potentially life-threatening disease. Most studies of latency use live-animal infection models, but these are complex, multilayered systems and can be difficult to manipulate. Infection of cultured primary neurons provides a powerful alternative, yielding important insights into host signaling pathways controlling latency. However, small animal models do not recapitulate all aspects of HSV-1 infection in humans and are limited in terms of the available molecular tools. To address this, we have developed a latency model based on human neurons differentiated in culture from an NIH-approved embryonic stem cell line. The resulting neurons are highly permissive for replication of wild-type HSV-1, but establish a non-productive infection state resembling latency when infected at low viral doses in the presence of the antivirals acyclovir and interferon-α. In this state, viral replication and expression of a late viral gene marker are not detected but there is an accumulation of the viral latency-associated transcript (LAT) RNA. After a six-day establishment period, antivirals can be removed and the infected cultures maintained for several weeks. Subsequent treatment with sodium butyrate induces reactivation and production of new infectious virus. Human neurons derived from stem cells provide the appropriate species context to study this exclusively human virus with the potential for more extensive manipulation of the progenitors and access to a wide range of preexisting molecular tools.
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Affiliation(s)
- Aldo Pourchet
- Department of Microbiology, New York University School of Medicine, New York, NY 10016, USA.
| | - Aram S Modrek
- Department of Neurosurgery, New York University School of Medicine, New York, NY 10016, USA.
| | - Dimitris G Placantonakis
- Department of Neurosurgery, New York University School of Medicine, New York, NY 10016, USA.
- Kimmel Center for Stem Cell Biology, New York University School of Medicine, New York, NY 10016, USA.
- Brain Tumor Center, New York University School of Medicine, New York, NY 10016, USA.
- Perlmutter Cancer Center, New York University School of Medicine, New York, NY 10016, USA.
- Neuroscience Institute, New York University School of Medicine, New York, NY 10016, USA.
| | - Ian Mohr
- Department of Microbiology, New York University School of Medicine, New York, NY 10016, USA.
- Perlmutter Cancer Center, New York University School of Medicine, New York, NY 10016, USA.
| | - Angus C Wilson
- Department of Microbiology, New York University School of Medicine, New York, NY 10016, USA.
- Perlmutter Cancer Center, New York University School of Medicine, New York, NY 10016, USA.
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13
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Bayin NS, Frenster JD, Kane JR, Rubenstein J, Modrek AS, Baitalmal R, Dolgalev I, Rudzenski K, Scarabottolo L, Crespi D, Redaelli L, Snuderl M, Golfinos JG, Doyle W, Pacione D, Parker EC, Chi AS, Heguy A, MacNeil DJ, Shohdy N, Zagzag D, Placantonakis DG. GPR133 (ADGRD1), an adhesion G-protein-coupled receptor, is necessary for glioblastoma growth. Oncogenesis 2016; 5:e263. [PMID: 27775701 PMCID: PMC5117849 DOI: 10.1038/oncsis.2016.63] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 08/09/2016] [Accepted: 08/24/2016] [Indexed: 02/06/2023] Open
Abstract
Glioblastoma (GBM) is a deadly primary brain malignancy with extensive intratumoral hypoxia. Hypoxic regions of GBM contain stem-like cells and are associated with tumor growth and angiogenesis. The molecular mechanisms that regulate tumor growth in hypoxic conditions are incompletely understood. Here, we use primary human tumor biospecimens and cultures to identify GPR133 (ADGRD1), an orphan member of the adhesion family of G-protein-coupled receptors, as a critical regulator of the response to hypoxia and tumor growth in GBM. GPR133 is selectively expressed in CD133+ GBM stem cells (GSCs) and within the hypoxic areas of PPN in human biospecimens. GPR133 mRNA is transcriptionally upregulated by hypoxia in hypoxia-inducible factor 1α (Hif1α)-dependent manner. Genetic inhibition of GPR133 with short hairpin RNA reduces the prevalence of CD133+ GSCs, tumor cell proliferation and tumorsphere formation in vitro. Forskolin rescues the GPR133 knockdown phenotype, suggesting that GPR133 signaling is mediated by cAMP. Implantation of GBM cells with short hairpin RNA-mediated knockdown of GPR133 in the mouse brain markedly reduces tumor xenograft formation and increases host survival. Analysis of the TCGA data shows that GPR133 expression levels are inversely correlated with patient survival. These findings indicate that GPR133 is an important mediator of the hypoxic response in GBM and has significant protumorigenic functions. We propose that GPR133 represents a novel molecular target in GBM and possibly other malignancies where hypoxia is fundamental to pathogenesis.
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Affiliation(s)
- N S Bayin
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
- Kimmel Center for Stem Cell Biology, New York University School of Medicine, New York, NY, USA
| | - J D Frenster
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
- Kimmel Center for Stem Cell Biology, New York University School of Medicine, New York, NY, USA
| | - J R Kane
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
| | - J Rubenstein
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
| | - A S Modrek
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
| | - R Baitalmal
- Department of Pathology, New York University School of Medicine, New York, NY, USA
| | - I Dolgalev
- Genome Technology Center, New York University School of Medicine, New York, NY, USA
| | - K Rudzenski
- Office for Therapeutic Alliances, New York University School of Medicine, New York, NY, USA
| | | | | | | | - M Snuderl
- Department of Pathology, New York University School of Medicine, New York, NY, USA
- Brain Tumor Center, New York University School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, New York University School of Medicine, New York, NY, USA
| | - J G Golfinos
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
- Brain Tumor Center, New York University School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, New York University School of Medicine, New York, NY, USA
| | - W Doyle
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
| | - D Pacione
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
| | - E C Parker
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
| | - A S Chi
- Brain Tumor Center, New York University School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, New York University School of Medicine, New York, NY, USA
- Department of Neurology, New York University School of Medicine, New York, NY, USA
| | - A Heguy
- Genome Technology Center, New York University School of Medicine, New York, NY, USA
| | - D J MacNeil
- Office for Therapeutic Alliances, New York University School of Medicine, New York, NY, USA
| | - N Shohdy
- Office for Therapeutic Alliances, New York University School of Medicine, New York, NY, USA
| | - D Zagzag
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
- Department of Pathology, New York University School of Medicine, New York, NY, USA
- Brain Tumor Center, New York University School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, New York University School of Medicine, New York, NY, USA
| | - D G Placantonakis
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
- Kimmel Center for Stem Cell Biology, New York University School of Medicine, New York, NY, USA
- Brain Tumor Center, New York University School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, New York University School of Medicine, New York, NY, USA
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Tyagi V, Theobald J, Barger J, Bustoros M, Bayin NS, Modrek AS, Kader M, Anderer EG, Donahue B, Fatterpekar G, Placantonakis DG. Traumatic brain injury and subsequent glioblastoma development: Review of the literature and case reports. Surg Neurol Int 2016; 7:78. [PMID: 27625888 PMCID: PMC5009580 DOI: 10.4103/2152-7806.189296] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 05/28/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Previous reports have proposed an association between traumatic brain injury (TBI) and subsequent glioblastoma (GBM) formation. METHODS We used literature searches and radiographic evidence from two patients to assess the possibility of a link between TBI and GBM. RESULTS Epidemiological studies are equivocal on a possible link between brain trauma and increased risk of malignant glioma formation. We present two case reports of patients with GBM arising at the site of prior brain injury. CONCLUSION The hypothesis that TBI may predispose to gliomagenesis is disputed by several large-scale epidemiological studies, but supported by some. Radiographic evidence from two cases presented here suggest that GBM formed at the site of brain injury. We propose a putative pathogenesis model that connects post-traumatic inflammation, stem and progenitor cell transformation, and gliomagenesis.
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Affiliation(s)
- Vineet Tyagi
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, USA
| | - Jason Theobald
- Department of Neurosurgery, NYU School of Medicine, Brooklyn, New York, USA
| | - James Barger
- Department of Neurosurgery, NYU School of Medicine, Brooklyn, New York, USA
| | - Mark Bustoros
- Department of Neurosurgery, NYU School of Medicine, Brooklyn, New York, USA
| | - N Sumru Bayin
- Department of Neurosurgery, NYU School of Medicine, Brooklyn, New York, USA; Kimmel Center for Stem Cell Biology, NYU School of Medicine, Brooklyn, New York, USA
| | - Aram S Modrek
- Department of Neurosurgery, NYU School of Medicine, Brooklyn, New York, USA
| | - Michael Kader
- Department of Neurosurgery, NYU School of Medicine, Brooklyn, New York, USA
| | - Erich G Anderer
- Division of Neurosurgery, Maimonides Medical Center, Brooklyn, New York, USA
| | - Bernadine Donahue
- Department of Radiation Oncology, NYU School of Medicine, Brooklyn, New York, USA; Maimonides Cancer Center, Brooklyn, New York, USA
| | - Girish Fatterpekar
- Department of Radiology, NYU School of Medicine, Brooklyn, New York, USA
| | - Dimitris G Placantonakis
- Department of Neurosurgery, NYU School of Medicine, Brooklyn, New York, USA; Kimmel Center for Stem Cell Biology, NYU School of Medicine, Brooklyn, New York, USA; Brain Tumor Center, NYU School of Medicine, Brooklyn, New York, USA
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15
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Cooper BT, Li X, Shin SM, Modrek AS, Hsu HC, DeWyngaert JK, Jozsef G, Lymberis SC, Goldberg JD, Formenti SC. Preplanning prediction of the left anterior descending artery maximum dose based on patient, dosimetric, and treatment planning parameters. Adv Radiat Oncol 2016; 1:373-381. [PMID: 28740908 PMCID: PMC5514165 DOI: 10.1016/j.adro.2016.08.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 07/27/2016] [Accepted: 08/02/2016] [Indexed: 12/25/2022] Open
Abstract
PURPOSE Maximum dose to the left anterior descending artery (LADmax) is an important physical constraint to reduce the risk of cardiovascular toxicity. We generated a simple algorithm to guide the positioning of the tangent fields to reliably maintain LADmax <10 Gy. METHODS AND MATERIALS Dosimetric plans from 146 consecutive women treated prone to the left breast enrolled in prospective protocols of accelerated whole breast radiation therapy, with a concomitant daily boost to the tumor bed (40.5 Gy/15 fraction to the whole breast and 48 Gy to the tumor bed), provided the training set for algorithm development. Scatter plots and correlation coefficients were used to describe the bivariate relationships between LADmax and several parameters: distance from the tumor cavity to the tangent field edge, cavity size, breast separation, field size, and distance from the tangent field. A logistic sigmoid curve was used to model the relationship of LADmax and the distance from the tangent field. Furthermore, we tested this prediction model on a validation data set of 53 consecutive similar patients. RESULTS A lack of linear relationships between LADmax and distance from cavity to LAD (-0.47), cavity size (-0.18), breast separation (-0.02), or field size (-0.28) was observed. In contrast, distance from the tangent field was highly negatively correlated to LADmax (-0.84) and was used in the models to predict LADmax. From a logistic sigmoid model we selected a cut-point of 2.46 mm (95% confidence interval, 2.19-2.74 mm) greater than which LADmax is <10 Gy (95% confidence interval, 9.30-10.72 Gy) and LADmean is <3.3 Gy. CONCLUSIONS Placing the edge of the tangents at least 2.5 mm from the closest point of the contoured LAD is likely to assure LADmax is <10 Gy and LADmean is <3.3 Gy in patients treated with prone accelerated breast radiation therapy.
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Affiliation(s)
- Benjamin T Cooper
- Department of Radiation Oncology, New York University School of Medicine and Langone Medical Center, New York, New York
| | - Xiaochun Li
- Division of Biostatistics and Department of Population Health, New York University School of Medicine, New York, New York
| | - Samuel M Shin
- Department of Radiation Oncology, New York University School of Medicine and Langone Medical Center, New York, New York
| | - Aram S Modrek
- Department of Radiation Oncology, New York University School of Medicine and Langone Medical Center, New York, New York
| | - Howard C Hsu
- Department of Radiation Oncology, New York University School of Medicine and Langone Medical Center, New York, New York
| | - J K DeWyngaert
- Department of Radiation Oncology, New York University School of Medicine and Langone Medical Center, New York, New York
| | - Gabor Jozsef
- Department of Radiation Oncology, New York University School of Medicine and Langone Medical Center, New York, New York
| | - Stella C Lymberis
- Department of Radiation Oncology, New York University School of Medicine and Langone Medical Center, New York, New York
| | - Judith D Goldberg
- Division of Biostatistics and Department of Population Health, New York University School of Medicine, New York, New York
| | - Silvia C Formenti
- Department of Radiation Oncology, New York University School of Medicine and Langone Medical Center, New York, New York
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Bayin NS, Sen R, Si S, Modrek AS, Ortenzi V, Zagzag D, Snuderl M, Golfinos JG, Doyle W, Galifianakis N, Chesler M, Illa-Bochaca I, Barcellos-Hoff MH, Dolgalev I, Heguy A, Placantonakis D. STEM-04DEFINING GLIOBLASTOMA STEM CELL HETEROGENEITY. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov234.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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Bayin NS, Kane JR, Modrek AS, Shohdy N, MacNeil D, Zagzag D, Placantonakis DG. STEM-05GPR133 IS ENRICHED IN GLIOBLASTOMA STEM CELLS AND REGULATES THE RESPONSE TO HYPOXIA. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov234.05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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18
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Modrek AS, Hsu HC, Leichman CG, Du KL. Radiation therapy improves survival in rectal small cell cancer - Analysis of Surveillance Epidemiology and End Results (SEER) data. Radiat Oncol 2015; 10:101. [PMID: 25902707 PMCID: PMC4464878 DOI: 10.1186/s13014-015-0411-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Accepted: 04/15/2015] [Indexed: 12/15/2022] Open
Abstract
Background Small cell carcinoma of the rectum is a rare neoplasm with scant literature to guide treatment. We used the Surveillance Epidemiology and End Results (SEER) database to investigate the role of radiation therapy in the treatment of this cancer. Methods The SEER database (National Cancer Institute) was queried for locoregional cases of small cell rectal cancer. Years of diagnosis were limited to 1988–2010 (most recent available) to reduce variability in staging criteria or longitudinal changes in surgery and radiation techniques. Two month conditional survival was applied to minimize bias by excluding patients who did not survive long enough to receive cancer-directed therapy. Patient demographics between the RT and No_RT groups were compared using Pearson Chi-Square tests. Overall survival was compared between patients who received radiotherapy (RT, n = 43) and those who did not (No_RT, n = 28) using the Kaplan-Meier method. Multivariate Cox proportional hazards model was used to evaluate important covariates. Results Median survival was significantly longer for patients who received radiation compared to those who were not treated with radiation; 26 mo vs. 8 mo, respectively (log-rank P = 0.009). We also noted a higher 1-year overall survival rate for those who received radiation (71.1% vs. 37.8%). Unadjusted hazard ratio for death (HR) was 0.495 with the use of radiation (95% CI 0.286-0.858). Among surgery, radiotherapy, sex and age at diagnosis, radiation therapy was the only significant factor for overall survival with a multivariate HR for death of 0.393 (95% CI 0.206-0.750, P = 0.005). Conclusions Using SEER data, we have identified a significant survival advantage with the use of radiation therapy in the setting of rectal small cell carcinoma. Limitations of the SEER data apply to this study, particularly the lack of information on chemotherapy usage. Our findings strongly support the use of radiation therapy for patients with locoregional small cell rectal cancer.
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Affiliation(s)
| | - Howard C Hsu
- Department of Radiation Oncology, New York, USA.
| | - Cynthia G Leichman
- Division of Hematology and Medical Oncology, Department of Medicine, New York University School of Medicine, New York, USA.
| | - Kevin L Du
- Department of Radiation Oncology, New York, USA.
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19
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Bayin NS, Modrek AS, Dietrich A, Lebowitz J, Abel T, Song HR, Schober M, Zagzag D, Buchholz CJ, Chao MV, Placantonakis DG. Selective lentiviral gene delivery to CD133-expressing human glioblastoma stem cells. PLoS One 2014; 9:e116114. [PMID: 25541984 PMCID: PMC4277468 DOI: 10.1371/journal.pone.0116114] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 12/01/2014] [Indexed: 12/20/2022] Open
Abstract
Glioblastoma multiforme (GBM) is a deadly primary brain malignancy. Glioblastoma stem cells (GSC), which have the ability to self-renew and differentiate into tumor lineages, are believed to cause tumor recurrence due to their resistance to current therapies. A subset of GSCs is marked by cell surface expression of CD133, a glycosylated pentaspan transmembrane protein. The study of CD133-expressing GSCs has been limited by the relative paucity of genetic tools that specifically target them. Here, we present CD133-LV, a lentiviral vector presenting a single chain antibody against CD133 on its envelope, as a vehicle for the selective transduction of CD133-expressing GSCs. We show that CD133-LV selectively transduces CD133+ human GSCs in dose-dependent manner and that transduced cells maintain their stem-like properties. The transduction efficiency of CD133-LV is reduced by an antibody that recognizes the same epitope on CD133 as the viral envelope and by shRNA-mediated knockdown of CD133. Conversely, the rate of transduction by CD133-LV is augmented by overexpression of CD133 in primary human GBM cultures. CD133-LV selectively transduces CD133-expressing cells in intracranial human GBM xenografts in NOD.SCID mice, but spares normal mouse brain tissue, neurons derived from human embryonic stem cells and primary human astrocytes. Our findings indicate that CD133-LV represents a novel tool for the selective genetic manipulation of CD133-expressing GSCs, and can be used to answer important questions about how these cells contribute to tumor biology and therapy resistance.
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Affiliation(s)
- N. Sumru Bayin
- Department of Neurosurgery, NYU School of Medicine, New York, NY, United States of America
- Helen L. and Martin S. Kimmel Center for Stem Cell Biology, NYU School of Medicine, New York, NY, United States of America
| | - Aram S. Modrek
- Department of Neurosurgery, NYU School of Medicine, New York, NY, United States of America
- Medical Scientist Training Program, NYU School of Medicine, New York, NY, United States of America
| | - August Dietrich
- Department of Neurosurgery, NYU School of Medicine, New York, NY, United States of America
| | - Jonathan Lebowitz
- Department of Neurosurgery, NYU School of Medicine, New York, NY, United States of America
| | - Tobias Abel
- Molecular Biotechnology and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
| | - Hae-Ri Song
- Department of Neurosurgery, NYU School of Medicine, New York, NY, United States of America
| | - Markus Schober
- Helen L. and Martin S. Kimmel Center for Stem Cell Biology, NYU School of Medicine, New York, NY, United States of America
- Department of Cell Biology, NYU School of Medicine, New York, NY, United States of America
- Ronald O. Perelman Department of Dermatology, NYU School of Medicine, New York, NY, United States of America
| | - David Zagzag
- Department of Pathology, NYU School of Medicine, New York, NY, United States of America
| | - Christian J. Buchholz
- Molecular Biotechnology and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
- German Cancer Consortium, Heidelberg, Germany
| | - Moses V. Chao
- Skirball Institute, NYU School of Medicine, New York, NY, United States of America
| | - Dimitris G. Placantonakis
- Department of Neurosurgery, NYU School of Medicine, New York, NY, United States of America
- Helen L. and Martin S. Kimmel Center for Stem Cell Biology, NYU School of Medicine, New York, NY, United States of America
- Brain Tumor Center, NYU School of Medicine, New York, NY, United States of America
- * E-mail:
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Modrek AS, Bayin NS, Placantonakis DG. Brain stem cells as the cell of origin in glioma. World J Stem Cells 2014; 6:43-52. [PMID: 24567787 PMCID: PMC3927013 DOI: 10.4252/wjsc.v6.i1.43] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 11/06/2013] [Accepted: 12/13/2013] [Indexed: 02/06/2023] Open
Abstract
Glioma incidence rates in the United States are near 20000 new cases per year, with a median survival time of 14.6 mo for high-grade gliomas due to limited therapeutic options. The origins of these tumors and their many subtypes remain a matter of investigation. Evidence from mouse models of glioma and human clinical data have provided clues about the cell types and initiating oncogenic mutations that drive gliomagenesis, a topic we review here. There has been mixed evidence as to whether or not the cells of origin are neural stem cells, progenitor cells or differentiated progeny. Many of the existing murine models target cell populations defined by lineage-specific promoters or employ lineage-tracing methods to track the potential cells of origin. Our ability to target specific cell populations will likely increase concurrently with the knowledge gleaned from an understanding of neurogenesis in the adult brain. The cell of origin is one variable in tumorigenesis, as oncogenes or tumor suppressor genes may differentially transform the neuroglial cell types. Knowledge of key driver mutations and susceptible cell types will allow us to understand cancer biology from a developmental standpoint and enable early interventional strategies and biomarker discovery.
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