Abstract
Epigenetics is the epi-information beyond the DNA sequence that can be inherited from parents to offspring. From years of studies, people have found that histone modifications, DNA methylation, and RNA-based mechanism are the main means of epigenetic control. In this chapter, we will focus on the general introductions of epigenetics, which is important in the regulation of chromatin structure and gene expression. With the development and expansion of high-throughput sequencing, various mutations of epigenetic regulators have been identified and proven to be the drivers of tumorigenesis. Epigenetic alterations are used to diagnose individual patients more accurately and specifically. Several drugs, which are targeting epigenetic changes, have been developed to treat patients regarding the awareness of precision medicine. Emerging researches are connecting the epigenetics and cancers together in the molecular mechanism exploration and the development of druggable targets.
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