Histone Modifying Enzymes and Chromatin Modifiers in Glioma Pathobiology and Therapy Responses

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Glioma Signaling

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 1202))

Abstract

Signal transduction pathways directly communicate and transform chromatin to change the epigenetic landscape and regulate gene expression. Chromatin acts as a dynamic platform of signal integration and storage. Histone modifications and alteration of chromatin structure play the main role in chromatin-based gene expression regulation. Alterations in genes coding for histone modifying enzymes and chromatin modifiers result in malfunction of proteins that regulate chromatin modification and remodeling. Such dysregulations culminate in profound changes in chromatin structure and distorted patterns of gene expression. Gliomagenesis is a multistep process, involving both genetic and epigenetic alterations. Recent applications of next generation sequencing have revealed that many chromatin regulation-related genes, including ATRX, ARID1A, SMARCA4, SMARCA2, SMARCC2, BAF155 and hSNF5 are mutated in gliomas. In this review we summarize newly identified mechanisms affecting expression or functions of selected histone modifying enzymes and chromatin modifiers in gliomas. We focus on selected examples of pathogenic mechanisms involving ATRX, histone methyltransferase G9a, histone acetylases/deacetylases and chromatin remodeling complexes SMARCA2/4. We discuss the impact of selected epigenetics alterations on glioma pathobiology, signaling and therapeutic responses. We assess the attempts of targeting defective pathways with new inhibitors.

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Abbreviations

ADAADiN:

Active DNA-dependent ATPase A domain inhibitor

ARID1A:

AT-rich interactive domain-containing protein 1A

ATG:

Autophagy related gene

ATRX:

Thalassaemia/mental retardation syndrome X-linked

BET:

Bromodomain and extraterminal domain

BRD:

Bromodomain

DAXX:

Death-domain associated protein

DNMT1:

DNA methyltransferase-1

DSB:

Double-strand break

EHMT2:

Euchromatic histone-lysine N-methyltransferase 2

EZH2:

Enhancer of zeste homolog 2

GBM:

Glioblastoma

GLP:

G9a-like protein

GSC:

Glioma stem cell

HAT:

Histone acetyltransferase

HDAC:

Histone deacetylase

HMT:

Histone methyltransferase

MBT domain:

Malignant brain tumor domain

pCAF:

p300/CBP Associated factor

PcG protein:

Polycomb Group protein

RPA70:

Replication protein A 70

SAM:

S-adenosyl-methionine

SMARCA2:

SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily A, member 2

SMARCA4:

SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily A, member 4

Suv39h1:

Suppressor of variegation 3–9 homologue 1

SWI/SNF:

SWItch/sucrose non-fermentable

TCGA:

The cancer genome atlas

TMZ:

Temozolomide

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Acknowledgements

Supported by a grant from the Polish National Science Centre [DEC-2015/16/W/NZ2/00314].

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Correspondence to Bozena Kaminska .

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Ciechomska, I.A., Jayaprakash, C., Maleszewska, M., Kaminska, B. (2020). Histone Modifying Enzymes and Chromatin Modifiers in Glioma Pathobiology and Therapy Responses. In: Barańska, J. (eds) Glioma Signaling. Advances in Experimental Medicine and Biology, vol 1202. Springer, Cham. https://doi.org/10.1007/978-3-030-30651-9_13

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