Abstract
The epithelial-to-mesenchymal transition (EMT) is a reversible change in cell phenotype that plays a crucial role during normal development and cancer metastasis. EMT imparts embryonic epithelial cells with the ability to migrate and to give rise to organs or tissues at distant sites. During cancer progression, the same developmental process is utilized in an analogous manner to enable cancer cells to move to distant organs and form metastases. The reversion of EMT via the mesenchymal-to-epithelial transition (MET) appears to be required for the formation of secondary tumors at distal sites. The plasticity of epigenomic modifications that control the transcriptional program of cells enables cells to switch back and forth from epithelial and mesenchymal phenotypes during these transitions. Here, we review the interplay between complex epigenomic regulatory mechanisms and various transcription factors involved in EMT leading to changes in gene expression and cell phenotype. We also discuss the way that a deeper understanding of the epigenomic regulation of EMT might shed light onto the process of cancer progression and reveal new targets for novel and more specific anticancer epigenomic therapies.
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Acknowledgments
Because of the large body of work surrounding the topics of epigenomic regulation, tumor metastasis and EMT, the authors were unable to cite all the relevant work related to these topics. Thus, the authors wish to apologize and acknowledge the work of many other scientists who are diligently working in these fields but whose work was not cited here. The authors further thank U. Bedi, F. Wegwitz, M. Dobbelstein, U. Keitel and C. Scheel for insightful conversations related to the topic of this review.
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Work in the Johnsen group is supported by grants from the Deutsche Krebshilfe (109088) and the Deutsche Forschungsgemeinschaft (JO 815/3) to S.A.J.
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Mishra, V.K., Johnsen, S.A. Targeted therapy of epigenomic regulatory mechanisms controlling the epithelial to mesenchymal transition during tumor progression. Cell Tissue Res 356, 617–630 (2014). https://doi.org/10.1007/s00441-014-1912-y
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DOI: https://doi.org/10.1007/s00441-014-1912-y