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Targeting EZH2 in cancer
Kimberly H Kim1,2,3,4, Charles W M Roberts1,2,3,4,5
1Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
Abstract:
Recent genomic studies have resulted in an emerging understanding of the role of chromatin regulators in the development of cancer. EZH2, a histone methyl transferase subunit of a Polycomb repressor complex, is recurrently mutated in several forms of cancer and is highly expressed in numerous others. Notably, both gain-of-function and loss-of-function mutations occur in cancers but are associated with distinct cancer types. Here we review the spectrum of EZH2-associated mutations, discuss the mechanisms underlying EZH2 function, and synthesize a unifying perspective that the promotion of cancer arises from disruption of the role of EZH2 as a master regulator of transcription. We further discuss EZH2 inhibitors that are now showing early signs of promise in clinical trials and also additional strategies to combat roles of EZH2 in cancer.
Insights
Altered enhancer of zeste homolog 2 (EZH2) function, crucial for gene regulation, drives cancer development through mutations. Targeting EZH2 offers promising therapeutic strategies for various cancers.
Area of Science:
- Oncology
- Genetics
- Epigenetics
Background:
- Chromatin regulators, including EZH2, are increasingly implicated in cancer development.
- EZH2, a key component of the Polycomb repressor complex, is frequently mutated or overexpressed across diverse cancer types.
- Both activating and inactivating EZH2 mutations are observed, correlating with specific cancer pathologies.
Purpose of the Study:
- To review the spectrum of EZH2 mutations in cancer.
- To elucidate the mechanistic basis of EZH2's role in tumorigenesis.
- To propose a unifying framework for EZH2's function as a transcriptional regulator in cancer.
Main Methods:
- Literature review of genomic studies and cancer databases.
- Analysis of mutation data and expression patterns of EZH2.
- Synthesis of mechanistic insights into EZH2's transcriptional regulatory functions.
Main Results:
- EZH2 mutations, both gain-of-function and loss-of-function, are associated with distinct cancer types.
- Disruption of EZH2's role as a master transcriptional regulator promotes cancer.
- Early clinical trials show promise for EZH2 inhibitors.
Conclusions:
- EZH2 is a critical player in cancer, with diverse mutations impacting its function.
- Understanding EZH2's multifaceted roles is key to developing targeted cancer therapies.
- Inhibitors targeting EZH2 represent a promising therapeutic avenue for cancer treatment.
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