Abstract
Enhancers are noncoding DNA sequences responsible for orchestrating gene expression programs by interacting with transcription factors and chromatin regulators within complex genome structures. However, their fundamental functions can be disrupted by genetic and epigenetic alterations, leading to aberrant enhancer activation or rewiring that contributes to oncogenesis. Analyzing dysregulated enhancer landscapes reveals new subtype-defining genomic features, such as enhancer hijacking, and identifies disease-relevant transcriptional regulators as potential targets for developing enhancer-targeting therapeutic strategies. Here, we delve into evolving concepts and technologies for studying enhancers; discuss how genetic, epigenetic, and topological alterations disrupt enhancer regulation to promote oncogenic gene expression; and underscore the importance of understanding the regulatory principles governing enhancer function to guide therapeutic strategies. Furthermore, we highlight key challenges and emerging opportunities in targeting enhancers and their regulators to improve cancer classification, prognosis, and treatment.
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