The bromodomain and extraterminal (BET) family proteins associate with transcriptional activation through interaction with acetylated chromatin, therefore playing a key role as epigenetic regulators. BET proteins serve to regulate the expression of importance oncogenes, including those involved in apoptosis as well as cell cycle progression. Due to this potential as an epigenetic target, small molecule inhibition of BET proteins have been investigated and demonstrate promising activity in both solid and hematologic malignancies, including brain tumors. Glioblastoma multiforme (GBM), subsets of medulloblastoma, and diffuse intrinsic pontine glioma (DIPG) are types of brain tumors with dismal prognoses, and as such have been the subjects of preclinical studies using BET inhibitors both in vivo and in vitro. While results from these preclinical investigations have shown promise, clinical trials are in early phases at this time. In this review, we will summarize the current literature on BET family proteins, their potential as therapeutic targets in brain tumors as well as other malignancies, and the preclinical and clinical investigations that have been undertaken to date.
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| http://dx.doi.org/10.7759/cureus.620 | DOI Listing |
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