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. 2020 Jun 23;10:10149. doi: 10.1038/s41598-020-66797-x

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Model showing epigenetic regulation of developmental genes by mutant KRAS. Activating KRAS mutations lead to persistant induction of effector pathways that drive the cancer phenotype including the differential DNA methylation of genes involved in development and differentiation. In some cell lines, effector pathways such as PI3K and others, are able to maintain their abberant activity independent of KRAS signaling. As a consequence of feed forward loops initiated by mutant KRAS, kinome reprogramming, or the establishment of stable epigenetic patterns, the majority of DNA methylation changes associated with mutant KRAS activity remains refractory to KRAS suppression. However, independent of the changes in DNA methylation, KRAS knockdown and ERK inhibition still both lead to growth arrest in KRAS driven cell lines. SCH772984, type I and type II ERK inhibitor.