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Cancer epigenetics: Tumor Heterogeneity, Plasticity of Stem-like States, and Drug Resistance #MMPMID24905005
Easwaran H; Tsai HC; Baylin SB
Mol Cell 2014[Jun]; 54 (5): 716-27 PMID24905005show ga
The existence of sub-populations of cells in cancers with increased tumor initiating capacities and self-renewal potential, often termed ?cancer stem cells?, is a much discussed and key area of cancer biology. Such cellular heterogeneity is very important due to its impact on therapy and especially states of treatment resistance. A major question is whether there is plasticity for evolution of these cell states during tumorigenesis which can involve movement between cell populations in a reversible fashion. In this review, we discuss the possible role of epigenetic abnormalities, as well as genetic alterations in such dynamics, and in the creation of cellular heterogeneity in cancers of all types.