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Developing H3K27M mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma

Diffuse intrinsic pontine glioma (DIPG) is a rare but highly lethal pediatric and adolescent tumor located in the pons of the brainstem. DIPGs harbor unique and specific pathological and molecular alterations, such as the hallmark lysine 27-to-methionine (H3K27M) mutation in histone H3, which lead t...

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Autores principales: Parsels, Leslie A., Wahl, Daniel R, Koschmann, Carl, Morgan, Meredith A., Zhang, Qiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Neoplasia Press 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9918797/
https://www.ncbi.nlm.nih.gov/pubmed/36724689
http://dx.doi.org/10.1016/j.neo.2023.100881
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author Parsels, Leslie A.
Wahl, Daniel R
Koschmann, Carl
Morgan, Meredith A.
Zhang, Qiang
author_facet Parsels, Leslie A.
Wahl, Daniel R
Koschmann, Carl
Morgan, Meredith A.
Zhang, Qiang
author_sort Parsels, Leslie A.
collection PubMed
description Diffuse intrinsic pontine glioma (DIPG) is a rare but highly lethal pediatric and adolescent tumor located in the pons of the brainstem. DIPGs harbor unique and specific pathological and molecular alterations, such as the hallmark lysine 27-to-methionine (H3K27M) mutation in histone H3, which lead to global changes in the epigenetic landscape and drive tumorigenesis. While fractionated radiotherapy, the current standard of care, improves symptoms and delays tumor progression, DIPGs inevitably recur, and despite extensive efforts chemotherapy-driven radiosensitization strategies have failed to improve survival. Advances in our understanding of the role of epigenetics in the cellular response to radiation-induced DNA damage, however, offer new opportunities to develop combinational therapeutic strategies selective for DIPGs expressing H3K27M. In this review, we provide an overview of preclinical studies that explore potential radiosensitization strategies targeting the unique epigenetic landscape of H3K27M mutant DIPG. We further discuss opportunities to selectively radiosensitize DIPG through strategic inhibition of the radiation-induced DNA damage response. Finally, we discuss the potential for using radiation to induce anti-tumor immune responses that may be potentiated in DIPG by radiosensitizing-therapeutic strategies.
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spelling pubmed-99187972023-02-13 Developing H3K27M mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma Parsels, Leslie A. Wahl, Daniel R Koschmann, Carl Morgan, Meredith A. Zhang, Qiang Neoplasia Pediatric Brain Tumor Diffuse intrinsic pontine glioma (DIPG) is a rare but highly lethal pediatric and adolescent tumor located in the pons of the brainstem. DIPGs harbor unique and specific pathological and molecular alterations, such as the hallmark lysine 27-to-methionine (H3K27M) mutation in histone H3, which lead to global changes in the epigenetic landscape and drive tumorigenesis. While fractionated radiotherapy, the current standard of care, improves symptoms and delays tumor progression, DIPGs inevitably recur, and despite extensive efforts chemotherapy-driven radiosensitization strategies have failed to improve survival. Advances in our understanding of the role of epigenetics in the cellular response to radiation-induced DNA damage, however, offer new opportunities to develop combinational therapeutic strategies selective for DIPGs expressing H3K27M. In this review, we provide an overview of preclinical studies that explore potential radiosensitization strategies targeting the unique epigenetic landscape of H3K27M mutant DIPG. We further discuss opportunities to selectively radiosensitize DIPG through strategic inhibition of the radiation-induced DNA damage response. Finally, we discuss the potential for using radiation to induce anti-tumor immune responses that may be potentiated in DIPG by radiosensitizing-therapeutic strategies. Neoplasia Press 2023-01-30 /pmc/articles/PMC9918797/ /pubmed/36724689 http://dx.doi.org/10.1016/j.neo.2023.100881 Text en © 2023 The Authors. Published by Elsevier Inc. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Pediatric Brain Tumor
Parsels, Leslie A.
Wahl, Daniel R
Koschmann, Carl
Morgan, Meredith A.
Zhang, Qiang
Developing H3K27M mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma
title Developing H3K27M mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma
title_full Developing H3K27M mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma
title_fullStr Developing H3K27M mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma
title_full_unstemmed Developing H3K27M mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma
title_short Developing H3K27M mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma
title_sort developing h3k27m mutant selective radiosensitization strategies in diffuse intrinsic pontine glioma
topic Pediatric Brain Tumor
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9918797/
https://www.ncbi.nlm.nih.gov/pubmed/36724689
http://dx.doi.org/10.1016/j.neo.2023.100881
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