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Published on: May 15, 2019
Therapeutic targeting of "undruggable" MYC
Victor Llombart1, Marc R Mansour2
1UCL Cancer Institute, University College London, Department of Haematology, London WC1E 6DD, UK.
Abstract:
c-MYC controls global gene expression and regulates cell proliferation, cell differentiation, cell cycle, metabolism and apoptosis. According to some estimates, MYC is dysregulated in ≈70% of human cancers and strong evidence implicates aberrantly expressed MYC in both tumor initiation and maintenance. In vivo studies show that MYC inhibition elicits a prominent anti-proliferative effect and sustained tumor regression while any alteration on healthy tissue remains reversible. This opens an exploitable window for treatment that makes MYC one of the most appealing therapeutic targets for cancer drug development. This review describes the main functional and structural features of the protein structure of MYC and provides a general overview of the most relevant or recently identified interactors that modulate MYC oncogenic activity. This review also summarizes the different approaches aiming to abrogate MYC oncogenic function, with a particular focus on the prototype inhibitors designed for the direct and indirect targeting of MYC.
Insights
The MYC oncoprotein drives cancer growth and is implicated in about 70% of human cancers. Inhibiting MYC shows significant anti-cancer effects with reversible impact on healthy tissues, making it a key therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- The MYC oncoprotein is a critical regulator of cell proliferation, differentiation, and apoptosis.
- Dysregulation of MYC is observed in approximately 70% of human cancers, contributing to tumor initiation and progression.
Purpose of the Study:
- To review the functional and structural characteristics of the MYC protein.
- To provide an overview of MYC interactors that modulate its oncogenic activity.
- To summarize therapeutic strategies targeting MYC, including direct and indirect inhibition approaches.
Main Methods:
- Literature review of MYC's role in cancer.
- Analysis of MYC protein structure and function.
- Overview of identified MYC interactors.
- Summary of current and emerging MYC-targeting therapeutic strategies.
Main Results:
- MYC controls fundamental cellular processes and its aberrant expression is a hallmark of many cancers.
- In vivo studies demonstrate that MYC inhibition leads to significant anti-proliferative effects and tumor regression.
- Targeting MYC presents a promising therapeutic window due to reversible effects on healthy tissues.
Conclusions:
- MYC is a highly attractive therapeutic target for cancer treatment due to its central role in oncogenesis and the potential for selective inhibition.
- Understanding MYC's interactome is crucial for developing effective strategies to abrogate its oncogenic functions.
- Various approaches are being developed to directly or indirectly target MYC, offering new avenues for cancer drug development.
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