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Year : 2021  |  Volume : 4  |  Issue : 2  |  Page : 38-45

Chromatin dynamics orchestrates DNA repair mechanisms in glioblastoma

1 Shilpee Dutt Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, India
2 Training School Complex, Homi Bhabha National Institute, Mumbai, Maharashtra, India

Correspondence Address:
Dr. Shilpee Dutt
Tata Memorial Centre, ACTREC (Advanced Centre for Treatment, Research and Education in Cancer), Navi Mumbai, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/IJNO.IJNO_20_21

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Glioblastoma (GBM), World Health Organization grade IV, is the most lethal and aggressive primary brain tumor. Despite maximal surgical resection, genotoxic treatment with ionizing radiation, and alkylating agent temozolomide, the median survival of the patients remains less than 12 months. Resistance and recurrence in GBM have been majorly attributed to altered DNA repair mechanisms. The DNA repair in a cell is mediated by many repair genes and proteins whose expression and recruitment are controlled epigenetically by DNA methylation and histone modifications. Understanding the mechanistic details of the interplay between DNA damage response (DDR) and epigenetics to identify potential targets has emerged as an essential therapeutic strategy for GBM. This review will summarize our current knowledge of how epigenetics modulate DDR in GBM and our understanding as to how these modifications impact therapy regimens. Finally, we will discuss the recent advances in epigenetic drugs and the scope of such drugs for future applications in treating brain tumors.

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