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Kardian AS, Mack S. The Intersection of Epigenetic Alterations and Developmental State in Pediatric Ependymomas. Dev Neurosci 2024:000537694. [PMID: 38527429 DOI: 10.1159/000537694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 02/03/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND Ependymomas are the third most common brain cancer in children and have no targeted therapies. They are divided into at least 9 major subtypes based on molecular characteristics and major drivers and have few genetic mutations compared to the adult form of this disease, leading to investigation of other mechanisms. SUMMARY Epigenetic alterations such as transcriptional programs activated by oncofusion proteins and alterations in histone modifications play an important role in development of this disease. Evidence suggests these alterations interact with the developmental epigenetic programs in the cell of origin to initiate neoplastic transformation and later disease progression, perhaps by keeping a portion of tumor cells in a developmental, proliferative state. KEY MESSAGES To better understand this disease, research on its developmental origins and associated epigenetic states needs to be further pursued. This could lead to better treatments, which are currently lacking due to the difficult-to-drug nature of known drivers such as fusion proteins. Epigenetic and developmental states characteristic of these tumors may not just be potential therapeutic targets, but used as a tool to find new avenues of treatment.
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Karagiannis D, Wu W, Li A, Hayashi M, Chen X, Yip M, Mangipudy V, Xu X, Sánchez-Rivera FJ, Soto-Feliciano YM, Ye J, Papagiannakopoulos T, Lu C. Metabolic reprogramming by histone deacetylase inhibition preferentially targets NRF2-activated tumors. Cell Rep 2024; 43:113629. [PMID: 38165806 PMCID: PMC10853943 DOI: 10.1016/j.celrep.2023.113629] [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: 12/06/2022] [Revised: 10/27/2023] [Accepted: 12/12/2023] [Indexed: 01/04/2024] Open
Abstract
The interplay between metabolism and chromatin signaling is implicated in cancer progression. However, whether and how metabolic reprogramming in tumors generates chromatin vulnerabilities remain unclear. Lung adenocarcinoma (LUAD) tumors frequently harbor aberrant activation of the NRF2 antioxidant pathway, which drives aggressive and chemo-resistant disease. Using a chromatin-focused CRISPR screen, we report that NRF2 activation sensitizes LUAD cells to genetic and chemical inhibition of class I histone deacetylases (HDACs). This association is observed across cultured cells, mouse models, and patient-derived xenografts. Integrative epigenomic, transcriptomic, and metabolomic analysis demonstrates that HDAC inhibition causes widespread redistribution of H4ac and its reader protein, which transcriptionally downregulates metabolic enzymes. This results in reduced flux into amino acid metabolism and de novo nucleotide synthesis pathways that are preferentially required for the survival of NRF2-active cancer cells. Together, our findings suggest NRF2 activation as a potential biomarker for effective repurposing of HDAC inhibitors to treat solid tumors.
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Affiliation(s)
- Dimitris Karagiannis
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Warren Wu
- Department of Pathology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Albert Li
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Makiko Hayashi
- Department of Pathology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Xiao Chen
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Michaela Yip
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Vaibhav Mangipudy
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Xinjing Xu
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Francisco J Sánchez-Rivera
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Yadira M Soto-Feliciano
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Jiangbin Ye
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Thales Papagiannakopoulos
- Department of Pathology, New York University Grossman School of Medicine, New York, NY 10016, USA; Laura and Isaac Perlmutter NYU Cancer Center, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Chao Lu
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA; Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY 10032, USA.
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Geng Y, Wang Z, Xu X, Sun X, Dong X, Luo Y, Sun X. Extensive therapeutic effects, underlying molecular mechanisms and disease treatment prediction of Metformin: a systematic review. Transl Res 2024; 263:73-92. [PMID: 37567440 DOI: 10.1016/j.trsl.2023.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023]
Abstract
Metformin (Met), a first-line management for type 2 diabetes mellitus, has been expansively employed and studied with results indicating its therapeutic potential extending beyond glycemic control. Beyond its established role, this therapeutic drug demonstrates a broad spectrum of action encompassing over 60 disorders, encompassing metabolic conditions, inflammatory disorders, carcinomas, cardiovascular diseases, and cerebrovascular pathologies. There is clear evidence of Met's action targeting specific nodes in the molecular pathways of these diseases and, intriguingly, interactions with the intestinal microbiota and epigenetic processes have been explored. Furthermore, novel Met derivatives with structural modifications tailored to diverse diseases have been synthesized and assessed. This manuscript proffers a comprehensive thematic review of the diseases amenable to Met treatment, elucidates their molecular mechanisms, and employs informatics technology to prospect future therapeutic applications of Met. These data and insights gleaned considerably contribute to enriching our understanding and appreciation of Met's far-reaching clinical potential and therapeutic applicability.
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Affiliation(s)
- Yifei Geng
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Diabetes Research Center, Chinese Academy of Medical Sciences, China; Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, China
| | - Zhen Wang
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Diabetes Research Center, Chinese Academy of Medical Sciences, China; Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, China
| | - Xiaoyu Xu
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Diabetes Research Center, Chinese Academy of Medical Sciences, China; Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, China
| | - Xiao Sun
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Diabetes Research Center, Chinese Academy of Medical Sciences, China; Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, China
| | - Xi Dong
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Diabetes Research Center, Chinese Academy of Medical Sciences, China; Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, China
| | - Yun Luo
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Diabetes Research Center, Chinese Academy of Medical Sciences, China; Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, China.
| | - Xiaobo Sun
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Diabetes Research Center, Chinese Academy of Medical Sciences, China; Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, China.
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4
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Park JW, Lee K, Kim EE, Kim SI, Park SH. Brain Tumor Classification by Methylation Profile. J Korean Med Sci 2023; 38:e356. [PMID: 37935168 PMCID: PMC10627723 DOI: 10.3346/jkms.2023.38.e356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 09/12/2023] [Indexed: 11/09/2023] Open
Abstract
The goal of the methylation classifier in brain tumor classification is to accurately classify tumors based on their methylation profiles. Accurate brain tumor diagnosis is the first step for healthcare professionals to predict tumor prognosis and establish personalized treatment plans for patients. The methylation classifier can be used to perform classification on tumor samples with diagnostic difficulties due to ambiguous histology or mismatch between histopathology and molecular signatures, i.e., not otherwise specified (NOS) cases or not elsewhere classified (NEC) cases, aiding in pathological decision-making. Here, the authors elucidate upon the application of a methylation classifier as a tool to mitigate the inherent complexities associated with the pathological evaluation of brain tumors, even when pathologists are experts in histopathological diagnosis and have access to enough molecular genetic information. Also, it should be emphasized that methylome cannot classify all types of brain tumors, and it often produces erroneous matches even with high matching scores, so, excessive trust is prohibited. The primary issue is the considerable difficulty in obtaining reference data regarding the methylation profile of each type of brain tumor. This challenge is further amplified when dealing with recently identified novel types or subtypes of brain tumors, as such data are not readily accessible through open databases or authors of publications. An additional obstacle arises from the fact that methylation classifiers are primarily research-based, leading to the unavailability of charging patients. It is important to note that the application of methylation classifiers may require specialized laboratory techniques and expertise in DNA methylation analysis.
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Affiliation(s)
- Jin Woo Park
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Kwanghoon Lee
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Eric Eunshik Kim
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Seong-Ik Kim
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Sung-Hye Park
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
- Institute of Neuroscience, Seoul National University College of Medicine, Seoul, Korea.
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5
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Ueno C, Tanaka M, Yamazaki A, Yamamoto S. A Pediatric Case of Extraneural Subcutaneous Metastasis of Ependymoma. J Pediatr Hematol Oncol 2023; 45:e1025-e1030. [PMID: 37625130 DOI: 10.1097/mph.0000000000002749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 07/17/2023] [Indexed: 08/27/2023]
Abstract
Ependymoma is the third most common brain tumor in children. Extracranial metastases of ependymomas are uncommon. A 21-month-old Japanese boy was diagnosed to be brain dead due to a posterior fossa (PF) brain tumor. Surgical resection of the tumor was not performed. Twenty-seven months later, he developed a truncal subcutaneous tumor, which was pathologically diagnosed as PF ependymoma group A. We observed the intracranial recurrence of the brain tumor, an invasion to the left orbit, and a neoplasm in his liver before he died. This case suggests that PF ependymoma group A can metastasize extracranially to various organs.
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Affiliation(s)
| | - Masayuki Tanaka
- Surgery, National Hospital Organization Higashisaga Hospital, Miyaki-Machi
| | - Ayako Yamazaki
- Department of Human Pathology, Gunma University Graduate School of Medicine, Maebashi, Japan
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6
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Donson AM, Bertrand KC, Riemondy KA, Gao D, Zhuang Y, Sanford B, Norris GA, Chapman RJ, Fu R, Willard N, Griesinger AM, Ribeiro de Sousa G, Amani V, Grimaldo E, Hankinson TC, Booker F, Sill M, Grundy RG, Pajtler KW, Ellison DW, Foreman NK, Ritzmann TA. Significant increase of high-risk chromosome 1q gain and 6q loss at recurrence in posterior fossa group A ependymoma: A multicenter study. Neuro Oncol 2023; 25:1854-1867. [PMID: 37246777 PMCID: PMC10547517 DOI: 10.1093/neuonc/noad096] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Indexed: 05/30/2023] Open
Abstract
BACKGROUND Ependymoma (EPN) posterior fossa group A (PFA) has the highest rate of recurrence and the worst prognosis of all EPN molecular groups. At relapse, it is typically incurable even with re-resection and re-irradiation. The biology of recurrent PFA remains largely unknown; however, the increasing use of surgery at first recurrence has now provided access to clinical samples to facilitate a better understanding of this. METHODS In this large longitudinal international multicenter study, we examined matched samples of primary and recurrent disease from PFA patients to investigate the biology of recurrence. RESULTS DNA methylome derived copy number variants (CNVs) revealed large-scale chromosome gains and losses at recurrence in PFA. CNV changes were dominated by chromosome 1q gain and/or 6q loss, both previously identified as high-risk factors in PFA, which were present in 23% at presentation but increased to 61% at first recurrence. Multivariate survival analyses of this cohort showed that cases with 1q gain or 6q loss at first recurrence were significantly more likely to recur again. Predisposition to 1q+/6q- CNV changes at recurrence correlated with hypomethylation of heterochromatin-associated DNA at presentation. Cellular and molecular analyses revealed that 1q+/6q- PFA had significantly higher proportions of proliferative neuroepithelial undifferentiated progenitors and decreased differentiated neoplastic subpopulations. CONCLUSIONS This study provides clinically and preclinically actionable insights into the biology of PFA recurrence. The hypomethylation predisposition signature in PFA is a potential risk-classifier for trial stratification. We show that the cellular heterogeneity of PFAs evolves largely because of genetic evolution of neoplastic cells.
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Affiliation(s)
- Andrew M Donson
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children’s Hospital Colorado, Aurora, Colorado, USA
| | | | - Kent A Riemondy
- RNA Biosciences Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Dexiang Gao
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- University of Colorado Cancer Center Biostatistics and Bioinformatics Shared Resource, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Yonghua Zhuang
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- University of Colorado Cancer Center Biostatistics and Bioinformatics Shared Resource, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Bridget Sanford
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Gregory A Norris
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Rebecca J Chapman
- Children’s Brain Tumor Research Centre, University of Nottingham, Nottingham, UK
| | - Rui Fu
- Computational Biology, New York Genome Center, New York, New York, USA
| | - Nicholas Willard
- Department of Pathology, University of Colorado Denver, Aurora, Colorado, USA
| | - Andrea M Griesinger
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Graziella Ribeiro de Sousa
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Vladimir Amani
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Enrique Grimaldo
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Todd C Hankinson
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children’s Hospital Colorado, Aurora, Colorado, USA
- Department of Neurosurgery, University of Colorado Denver, Aurora, Colorado, USA
| | - Ffyona Booker
- Children’s Brain Tumor Research Centre, University of Nottingham, Nottingham, UK
| | - Martin Sill
- Hopp-Children’s Cancer Center Heidelberg (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Richard G Grundy
- Children’s Brain Tumor Research Centre, University of Nottingham, Nottingham, UK
| | - Kristian W Pajtler
- Hopp-Children’s Cancer Center Heidelberg (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Heidelberg, Germany
- Department of Pediatric Oncology, Hematology, and Immunology and Pulmonology, Heidelberg University Hospital, Heidelberg, Germany
| | | | - Nicholas K Foreman
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Timothy A Ritzmann
- Children’s Brain Tumor Research Centre, University of Nottingham, Nottingham, UK
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7
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Hansford JR, Eisenstat DD. No safe harbors for recurrent posterior fossa group A ependymoma: A time for change in risk assignment? Neuro Oncol 2023; 25:1868-1870. [PMID: 37487035 PMCID: PMC10547506 DOI: 10.1093/neuonc/noad129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Indexed: 07/26/2023] Open
Affiliation(s)
- Jordan R Hansford
- Michael Rice Cancer Centre, Women’s and Children’s Hospital, North Adelaide, South Australia, Australia
- Precision Cancer Medicine, South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia
- South Australia Immunogenomics Cancer Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - David D Eisenstat
- Children’s Cancer Centre, Royal Children’s Hospital, Parkville, Victoria, Australia
- Stem Cell Biology, Murdoch Children’s Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
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Damodharan S, Puccetti D. Pediatric Central Nervous System Tumor Overview and Emerging Treatment Considerations. Brain Sci 2023; 13:1106. [PMID: 37509034 PMCID: PMC10377074 DOI: 10.3390/brainsci13071106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Pediatric central nervous system (CNS) tumors are the most common solid tumor in children, with the majority being glial in origin. These tumors are classified by the World Health Organization (WHO) as either being low grade (WHO grade 1 and 2) or high grade (WHO grade 3 and 4). Our knowledge of the molecular landscape of pediatric brain tumors has advanced over the last decade, which has led to newer categorizations along with an expansion of therapeutic targets and options. In this review, we will give an overview of common CNS tumors seen in children along with a focus on treatment options and future considerations.
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Affiliation(s)
- Sudarshawn Damodharan
- Department of Pediatrics, Division of Pediatric Hematology, Oncology and Bone Marrow Transplant, University of Wisconsin School of Medicine & Public Health, Madison, WI 53792, USA
| | - Diane Puccetti
- Department of Pediatrics, Division of Pediatric Hematology, Oncology and Bone Marrow Transplant, University of Wisconsin School of Medicine & Public Health, Madison, WI 53792, USA
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Hua Y, Zheng Y, Yao Y, Jia R, Ge S, Zhuang A. Metformin and cancer hallmarks: shedding new lights on therapeutic repurposing. J Transl Med 2023; 21:403. [PMID: 37344841 DOI: 10.1186/s12967-023-04263-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 06/09/2023] [Indexed: 06/23/2023] Open
Abstract
Metformin is a well-known anti-diabetic drug that has been repurposed for several emerging applications, including as an anti-cancer agent. It boasts the distinct advantages of an excellent safety and tolerability profile and high cost-effectiveness at less than one US dollar per daily dose. Epidemiological evidence reveals that metformin reduces the risk of cancer and decreases cancer-related mortality in patients with diabetes; however, the exact mechanisms are not well understood. Energy metabolism may be central to the mechanism of action. Based on altering whole-body energy metabolism or cellular state, metformin's modes of action can be divided into two broad, non-mutually exclusive categories: "direct effects", which induce a direct effect on cancer cells, independent of blood glucose and insulin levels, and "indirect effects" that arise from systemic metabolic changes depending on blood glucose and insulin levels. In this review, we summarize an updated account of the current knowledge on metformin antitumor action, elaborate on the underlying mechanisms in terms of the hallmarks of cancer, and propose potential applications for repurposing metformin for cancer therapeutics.
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Affiliation(s)
- Yu Hua
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Yue Zheng
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Yiran Yao
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Renbing Jia
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Shengfang Ge
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China.
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, No. 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Ai Zhuang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China.
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, No. 639 Zhizaoju Road, Shanghai, 200011, China.
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Foss A, Pathania M. Pediatric Glioma Models Provide Insights into Tumor Development and Future Therapeutic Strategies. Dev Neurosci 2023; 46:22-43. [PMID: 37231843 DOI: 10.1159/000531040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/09/2023] [Indexed: 05/27/2023] Open
Abstract
In depth study of pediatric gliomas has been hampered due to difficulties in accessing patient tissue and a lack of clinically representative tumor models. Over the last decade, however, profiling of carefully curated cohorts of pediatric tumors has identified genetic drivers that molecularly segregate pediatric gliomas from adult gliomas. This information has inspired the development of a new set of powerful in vitro and in vivo tumor models that can aid in identifying pediatric-specific oncogenic mechanisms and tumor microenvironment interactions. Single-cell analyses of both human tumors and these newly developed models have revealed that pediatric gliomas arise from spatiotemporally discrete neural progenitor populations in which developmental programs have become dysregulated. Pediatric high-grade gliomas also harbor distinct sets of co-segregating genetic and epigenetic alterations, often accompanied by unique features within the tumor microenvironment. The development of these novel tools and data resources has led to insights into the biology and heterogeneity of these tumors, including identification of distinctive sets of driver mutations, developmentally restricted cells of origin, recognizable patterns of tumor progression, characteristic immune environments, and tumor hijacking of normal microenvironmental and neural programs. As concerted efforts have broadened our understanding of these tumors, new therapeutic vulnerabilities have been identified, and for the first time, promising new strategies are being evaluated in the preclinical and clinical settings. Even so, dedicated and sustained collaborative efforts are necessary to refine our knowledge and bring these new strategies into general clinical use. In this review, we will discuss the range of currently available glioma models, the way in which they have each contributed to recent developments in the field, their benefits and drawbacks for addressing specific research questions, and their future utility in advancing biological understanding and treatment of pediatric glioma.
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Affiliation(s)
- Amelia Foss
- Department of Oncology and the Milner Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
- CRUK Children's Brain Tumour Centre of Excellence, University of Cambridge, Cambridge, UK
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Manav Pathania
- Department of Oncology and the Milner Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
- CRUK Children's Brain Tumour Centre of Excellence, University of Cambridge, Cambridge, UK
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11
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Bertrand KC, Klimo P. Recent Advancements in Ependymoma: Challenges and Therapeutic Opportunities. Pediatr Neurosurg 2023; 58:307-312. [PMID: 37231859 DOI: 10.1159/000530868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 04/14/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Ependymoma is one of the most common malignant pediatric brain tumors and can be difficult to treat. Over the last decade, much progress has been made in the understanding of the underlying molecular drivers within this group of tumors, but clinical outcomes remain unchanged. SUMMARY Here, we review the most recent molecular advances in pediatric ependymoma, evaluate results of recent clinical trials and discuss the ongoing challenges in the field and questions that remain. KEY MESSAGES The field of ependymoma has vastly changed over the last several decades with ten distinct molecular subgroups now described, but much progress needs to be made in developing new therapeutic strategies and targets.
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Affiliation(s)
- Kelsey C Bertrand
- Division of Neuro-oncology, Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA,
| | - Paul Klimo
- Department of Surgery, St Jude Children's Research Hospital, Memphis, Tennessee, USA
- Department of Neurosurgery, University of Tennessee Health and Science Center, Memphis, Tennessee, USA
- Le Bonheur Neuroscience Institute, Le Bonheur Children's Hospital, Memphis, Tennessee, USA
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12
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Karagiannis D, Wu W, Li A, Hayashi M, Chen X, Yip M, Mangipudy V, Xu X, Sánchez-Rivera FJ, Soto-Feliciano YM, Ye J, Papagiannakopoulos T, Lu C. Metabolic Reprogramming by Histone Deacetylase Inhibition Selectively Targets NRF2-activated tumors. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.24.538118. [PMID: 37162970 PMCID: PMC10168258 DOI: 10.1101/2023.04.24.538118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Interplay between metabolism and chromatin signaling have been implicated in cancer initiation and progression. However, whether and how metabolic reprogramming in tumors generates specific epigenetic vulnerabilities remain unclear. Lung adenocarcinoma (LUAD) tumors frequently harbor mutations that cause aberrant activation of the NRF2 antioxidant pathway and drive aggressive and chemo-resistant disease. We performed a chromatin-focused CRISPR screen and report that NRF2 activation sensitized LUAD cells to genetic and chemical inhibition of class I histone deacetylases (HDAC). This association was consistently observed across cultured cells, syngeneic mouse models and patient-derived xenografts. HDAC inhibition causes widespread increases in histone H4 acetylation (H4ac) at intergenic regions, but also drives re-targeting of H4ac reader protein BRD4 away from promoters with high H4ac levels and transcriptional downregulation of corresponding genes. Integrative epigenomic, transcriptomic and metabolomic analysis demonstrates that these chromatin changes are associated with reduced flux into amino acid metabolism and de novo nucleotide synthesis pathways that are preferentially required for the survival of NRF2-active cancer cells. Together, our findings suggest that metabolic alterations such as NRF2 activation could serve as biomarkers for effective repurposing of HDAC inhibitors to treat solid tumors.
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13
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Hwang EI, Hanson D, Filbin MG, Mack SC. Why haven't we solved intracranial pediatric ependymoma? Current questions and barriers to treatment advances. Neoplasia 2023; 39:100895. [PMID: 36944298 PMCID: PMC10036929 DOI: 10.1016/j.neo.2023.100895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/20/2023] [Accepted: 02/28/2023] [Indexed: 03/22/2023]
Abstract
Pediatric intracranial ependymoma has seen a recent exponential expansion of biological findings, rapidly dividing the diagnosis into several subgroups, each with specific molecular and clinical characteristics. While such subdivision may complicate clinical conclusions from historical trials, this knowledge also provides an opportunity for interrogating the major clinical and biological questions preventing near-term translation into effective therapy for children with ependymoma. In this article, we briefly review some of the most critical clinical questions facing both patient management and the construct of future trials in childhood ependymoma, as well as explore some of the current barriers to efficient translation of preclinical discovery to the clinic.
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Abstract
Tumours exhibit notable metabolic alterations compared with their corresponding normal tissue counterparts. These metabolic alterations can support anabolic growth, enable survival in hostile environments and regulate gene expression programmes that promote malignant progression. Whether these metabolic changes are selected for during malignant transformation or can themselves be drivers of tumour initiation is unclear. However, intriguingly, many of the major bottlenecks for tumour initiation - control of cell fate, survival and proliferation - are all amenable to metabolic regulation. In this article, we review evidence demonstrating a critical role for metabolic pathways in processes that support the earliest stages of tumour development. We discuss how cell-intrinsic factors, such as the cell of origin or transforming oncogene, and cell-extrinsic factors, such as local nutrient availability, promote or restrain tumour initiation. Deeper insight into how metabolic pathways control tumour initiation will improve our ability to design metabolic interventions to limit tumour incidence.
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Affiliation(s)
- Julia S Brunner
- Cell Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Lydia W S Finley
- Cell Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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15
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Nabavizadeh A, Barkovich MJ, Mian A, Ngo V, Kazerooni AF, Villanueva-Meyer JE. Current state of pediatric neuro-oncology imaging, challenges and future directions. Neoplasia 2023; 37:100886. [PMID: 36774835 PMCID: PMC9945752 DOI: 10.1016/j.neo.2023.100886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 01/20/2023] [Accepted: 02/05/2023] [Indexed: 02/12/2023]
Abstract
Imaging plays a central role in neuro-oncology including primary diagnosis, treatment planning, and surveillance of tumors. The emergence of quantitative imaging and radiomics provided an uprecedented opportunity to compile mineable databases that can be utilized in a variety of applications. In this review, we aim to summarize the current state of conventional and advanced imaging techniques, standardization efforts, fast protocols, contrast and sedation in pediatric neuro-oncologic imaging, radiomics-radiogenomics, multi-omics and molecular imaging approaches. We will also address the existing challenges and discuss future directions.
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Affiliation(s)
- Ali Nabavizadeh
- Department of Radiology, Hospital of University of Pennsylvania, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Center for Data-Driven Discovery in Biomedicine (D3b), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
| | - Matthew J Barkovich
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA
| | - Ali Mian
- Division of Neuroradiology, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Missouri, USA
| | - Van Ngo
- Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Anahita Fathi Kazerooni
- Center for Data-Driven Discovery in Biomedicine (D3b), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Javier E Villanueva-Meyer
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA
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16
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Pun M, Pratt D, Nano PR, Joshi PK, Jiang L, Englinger B, Rao A, Cieslik M, Chinnaiyan AM, Aldape K, Pfister S, Filbin MG, Bhaduri A, Venneti S. Common molecular features of H3K27M DMGs and PFA ependymomas map to hindbrain developmental pathways. Acta Neuropathol Commun 2023; 11:25. [PMID: 36759899 PMCID: PMC9912509 DOI: 10.1186/s40478-023-01514-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/11/2023] [Indexed: 02/11/2023] Open
Abstract
Globally decreased histone 3, lysine 27 tri-methylation (H3K27me3) is a hallmark of H3K27-altered diffuse midline gliomas (DMGs) and group-A posterior fossa ependymomas (PFAs). H3K27-altered DMGs are largely characterized by lysine-to-methionine mutations in histone 3 at position 27 (H3K27M). Most PFAs overexpress EZH inhibitory protein (EZHIP), which possesses a region of similarity to the mutant H3K27M. Both H3K27M and EZHIP inhibit the function of the polycomb repressive complex 2 (PRC2) responsible for H3K27me3 deposition. These tumors often arise in neighboring regions of the brainstem and posterior fossa. In rare cases PFAs harbor H3K27M mutations, and DMGs overexpress EZHIP. These findings together raise the possibility that certain cell populations in the developing hindbrain/posterior fossa are especially sensitive to modulation of H3K27me3 states. We identified shared molecular features by comparing genomic, bulk transcriptomic, chromatin-based profiles, and single-cell RNA-sequencing (scRNA-seq) data from the two tumor classes. Our approach demonstrated that 1q gain, a key biomarker in PFAs, is prognostic in H3.1K27M, but not H3.3K27M gliomas. Conversely, Activin A Receptor Type 1 (ACVR1), which is associated with mutations in H3.1K27M gliomas, is overexpressed in a subset of PFAs with poor outcome. Despite diffuse H3K27me3 reduction, previous work shows that both tumors maintain genomic H3K27me3 deposition at select sites. We demonstrate heterogeneity in shared patterns of residual H3K27me3 for both tumors that largely segregated with inferred anatomic tumor origins and progenitor populations of tumor cells. In contrast, analysis of genes linked to H3K27 acetylation (H3K27ac)-marked enhancers showed higher expression in astrocytic-like tumor cells. Finally, common H3K27me3-marked genes mapped closely to expression patterns in the human developing hindbrain. Overall, our data demonstrate developmentally relevant molecular similarities between PFAs and H3K27M DMGs and support the overall hypothesis that deregulated mechanisms of hindbrain development are central to the biology of both tumors.
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Affiliation(s)
- Matthew Pun
- Laboratory of Brain Tumor Metabolism and Epigenetics, Department of Pathology, University of Michigan, 3520E MSRB 1, 1150 W. Medical Center, Ann Arbor, MI, 41804, USA
- Chad Carr Pediatric Tumor Center, Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA
- Cellular and Molecular Biology Program, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Medical Scientist Training Program, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Drew Pratt
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 10 Center Dr., Room 2S235, Bethesda, MD, 20892, USA
| | - Patricia R Nano
- Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Piyush K Joshi
- Hopp Children's Cancer Center (KiTZ) Heidelberg, Division of Pediatric Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Li Jiang
- Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA, 02115, USA
| | - Bernhard Englinger
- Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA, 02115, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, 1090, Vienna, Austria
- Center for Cancer Research and Comprehensive Cancer Center, Medical University Vienna, 1090, Vienna, Austria
| | - Arvind Rao
- Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Biostatistics, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Radiation Oncology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Marcin Cieslik
- Michigan Center for Translational Pathology, Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Arul M Chinnaiyan
- Michigan Center for Translational Pathology, Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Urology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Howard Hughes Medical Institute, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Kenneth Aldape
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 10 Center Dr., Room 2S235, Bethesda, MD, 20892, USA
| | - Stefan Pfister
- Hopp Children's Cancer Center (KiTZ) Heidelberg, Division of Pediatric Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Pediatric Hematology and Oncology, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Mariella G Filbin
- Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA, 02115, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
| | - Aparna Bhaduri
- Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Sriram Venneti
- Laboratory of Brain Tumor Metabolism and Epigenetics, Department of Pathology, University of Michigan, 3520E MSRB 1, 1150 W. Medical Center, Ann Arbor, MI, 41804, USA.
- Chad Carr Pediatric Tumor Center, Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA.
- Cellular and Molecular Biology Program, University of Michigan Medical School, Ann Arbor, MI, 48109, USA.
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, 48109, USA.
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17
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Rosenberg T, Bandopadhayay P. Molecular genetics of paediatric brain tumours and opportunities for precision medicine - a focus on infant tumours. Curr Opin Neurol 2022; 35:772-778. [PMID: 36226704 DOI: 10.1097/wco.0000000000001110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
PURPOSE OF REVIEW The last few decades have seen an explosion in our understanding of the molecular drivers of childhood brain tumours. These insights have opened the possibility for precision medicine approaches for some tumour types. However, a different spectrum of tumours is more likely to occur in infants and young children, who face additional therapeutic challenges. This review focuses on recent advances in molecular genetics of common infant brain tumours and their implication for diagnosis, prognostication and utilization of precision oncology approaches. RECENT FINDINGS Infant tumours have different biology and outcomes than similar tumours in older children and adults. For low-grade gliomas, targeted MAPK inhibition is well tolerated and likely efficacious. In high-grade gliomas, common tyrosine kinase alterations offer compelling targets for inhibition that are currently being evaluated. Paediatric-specific sequencing and methylation analysis offer insights into the driving biology of infant medulloblastoma, atypical teratoid rhabdoid tumours, embryonal tumours with multilayered rosettes, ependymoma and choroid plexus tumours, with molecular subgrouping shedding insights into distinct driving biology and clinical outcomes. SUMMARY Infant brain tumours are rare and heterogenous, with overall poor outcomes. Advances in molecular genetics have been incorporated into their diagnostic criteria and allow for accurate subgrouping and improved prognostication. The utilization of targeted agents appears beneficial for many low-grade gliomas and a subset of high-grade gliomas, but further research is urgently needed to improve outcomes for other tumour entities.
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Affiliation(s)
- Tom Rosenberg
- Dana-Farber/Boston Children's Cancer and Blood Disorders Center
- Department of Pediatrics, Harvard Medical School
| | - Pratiti Bandopadhayay
- Dana-Farber/Boston Children's Cancer and Blood Disorders Center
- Department of Pediatrics, Harvard Medical School
- Broad Institute of MIT and Harvard, Boston, Massachusetts, USA
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18
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Zhou M, Wang L, Sun P, Liu Y, Chen G, Zeng G. Delineation of molecular characteristics in pediatric PFA ependymoma involving rare osseous and pulmonary metastases: A case report and literature review. Front Oncol 2022; 12:1001118. [PMID: 36457507 PMCID: PMC9706190 DOI: 10.3389/fonc.2022.1001118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/27/2022] [Indexed: 08/27/2023] Open
Abstract
Ependymoma is the third most common pediatric primary brain tumor, with its most aggressive subtype being posterior fossa group A (PFA). Extraneural metastasis of pediatric PFA ependymoma is rare. Herein, we present a case of a 9-year-old girl with PFA ependymoma characterized by a lack of trimethylation of histone H3 at lysine 27 and elevated chromosome X open reading frame 67 expression. Despite multiple surgeries and radiotherapies, the patient had a rapid recurrence and developed osseous and pulmonary metastases, which may be attributed to the homozygous deletion of cyclin-dependent kinase (CDK) inhibitor 2A/B and CDK12 mutation. Importantly, the CDK12 mutation observed in the patient may be indicative of the need for further work-up to consider chemotherapy rather than administering poly (adenosine diphosphate-ribose) polymerase inhibitors. Taken together, this is the first report of pediatric PFA ependymoma with extraneural metastases, wherein we clarified the diagnostic procedures of this newly identified PFA ependymoma and provided new cues to study the invasiveness of this disease and treatment selection for such patients.
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Affiliation(s)
- Mading Zhou
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Leiming Wang
- Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Peng Sun
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yutong Liu
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Ge Chen
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Gao Zeng
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
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19
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Gimple RC, Yang K, Halbert ME, Agnihotri S, Rich JN. Brain cancer stem cells: resilience through adaptive plasticity and hierarchical heterogeneity. Nat Rev Cancer 2022; 22:497-514. [PMID: 35710946 DOI: 10.1038/s41568-022-00486-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/03/2022] [Indexed: 02/07/2023]
Abstract
Malignant brain tumours are complex ecosystems containing neoplastic and stromal components that generate adaptive and evolutionarily driven aberrant tissues in the central nervous system. Brain cancers are cultivated by a dynamic population of stem-like cells that enforce intratumoural heterogeneity and respond to intrinsic microenvironment or therapeutically guided insults through proliferation, plasticity and restructuring of neoplastic and stromal components. Far from a rigid hierarchy, heterogeneous neoplastic populations transition between cellular states with differential self-renewal capacities, endowing them with powerful resilience. Here we review the biological machinery used by brain tumour stem cells to commandeer tissues in the intracranial space, evade immune responses and resist chemoradiotherapy. Through recent advances in single-cell sequencing, improved models to investigate the role of the tumour microenvironment and a deeper understanding of the fundamental role of the immune system in cancer biology, we are now better equipped to explore mechanisms by which these processes can be exploited for therapeutic benefit.
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Affiliation(s)
- Ryan C Gimple
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Kailin Yang
- Department of Radiation Oncology, Taussig Cancer Center, Cleveland Clinic, Cleveland, OH, USA
| | - Matthew E Halbert
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sameer Agnihotri
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jeremy N Rich
- University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA, USA.
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA, USA.
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20
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Chen C, Wang Z, Qin Y. Connections between metabolism and epigenetics: mechanisms and novel anti-cancer strategy. Front Pharmacol 2022; 13:935536. [PMID: 35935878 PMCID: PMC9354823 DOI: 10.3389/fphar.2022.935536] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/29/2022] [Indexed: 12/26/2022] Open
Abstract
Cancer cells undergo metabolic adaptations to sustain their growth and proliferation under several stress conditions thereby displaying metabolic plasticity. Epigenetic modification is known to occur at the DNA, histone, and RNA level, which can alter chromatin state. For almost a century, our focus in cancer biology is dominated by oncogenic mutations. Until recently, the connection between metabolism and epigenetics in a reciprocal manner was spotlighted. Explicitly, several metabolites serve as substrates and co-factors of epigenetic enzymes to carry out post-translational modifications of DNA and histone. Genetic mutations in metabolic enzymes facilitate the production of oncometabolites that ultimately impact epigenetics. Numerous evidences also indicate epigenome is sensitive to cancer metabolism. Conversely, epigenetic dysfunction is certified to alter metabolic enzymes leading to tumorigenesis. Further, the bidirectional relationship between epigenetics and metabolism can impact directly and indirectly on immune microenvironment, which might create a new avenue for drug discovery. Here we summarize the effects of metabolism reprogramming on epigenetic modification, and vice versa; and the latest advances in targeting metabolism-epigenetic crosstalk. We also discuss the principles linking cancer metabolism, epigenetics and immunity, and seek optimal immunotherapy-based combinations.
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21
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Han J, Song X, Liu Y, Li L. Research progress on the function and mechanism of CXorf67 in PFA ependymoma. CHINESE SCIENCE BULLETIN-CHINESE 2022. [DOI: 10.1360/tb-2022-0565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Proton MR Spectroscopy of Pediatric Brain Disorders. Diagnostics (Basel) 2022; 12:diagnostics12061462. [PMID: 35741272 PMCID: PMC9222059 DOI: 10.3390/diagnostics12061462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 11/17/2022] Open
Abstract
In vivo MR spectroscopy is a non -invasive methodology that provides information about the biochemistry of tissues. It is available as a “push-button” application on state-of-the-art clinical MR scanners. MR spectroscopy has been used to study various brain diseases including tumors, stroke, trauma, degenerative disorders, epilepsy/seizures, inborn errors, neuropsychiatric disorders, and others. The purpose of this review is to provide an overview of MR spectroscopy findings in the pediatric population and its clinical use.
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23
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Lu VM, Luther EM, Eichberg DG, Morell AA, Shah AH, Komotar RJ, Ivan ME. The emerging relevance of H3K27 trimethylation loss in meningioma: A systematic review of recurrence and overall survival with meta-analysis. World Neurosurg 2022; 163:87-95.e1. [DOI: 10.1016/j.wneu.2022.04.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 04/11/2022] [Indexed: 11/30/2022]
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24
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Cell-of-Origin and Genetic, Epigenetic, and Microenvironmental Factors Contribute to the Intra-Tumoral Heterogeneity of Pediatric Intracranial Ependymoma. Cancers (Basel) 2021; 13:cancers13236100. [PMID: 34885210 PMCID: PMC8657076 DOI: 10.3390/cancers13236100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/24/2021] [Accepted: 12/01/2021] [Indexed: 02/07/2023] Open
Abstract
Intra-tumoral heterogeneity (ITH) is a complex multifaceted phenomenon that posits major challenges for the clinical management of cancer patients. Genetic, epigenetic, and microenvironmental factors are concurrent drivers of diversity among the distinct populations of cancer cells. ITH may also be installed by cancer stem cells (CSCs), that foster unidirectional hierarchy of cellular phenotypes or, alternatively, shift dynamically between distinct cellular states. Ependymoma (EPN), a molecularly heterogeneous group of tumors, shows a specific spatiotemporal distribution that suggests a link between ependymomagenesis and alterations of the biological processes involved in embryonic brain development. In children, EPN most often arises intra-cranially and is associated with an adverse outcome. Emerging evidence shows that EPN displays large intra-patient heterogeneity. In this review, after touching on EPN inter-tumoral heterogeneity, we focus on the sources of ITH in pediatric intra-cranial EPN in the framework of the CSC paradigm. We also examine how single-cell technology has shed new light on the complexity and developmental origins of EPN and the potential impact that this understanding may have on the therapeutic strategies against this deadly pediatric malignancy.
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