Drapela, S and Bouchal, J and Jolly, MK and Culig, Z and SouÄek, K (2020) ZEB1: A Critical Regulator of Cell Plasticity, DNA Damage Response, and Therapy Resistance. In: Frontiers in Molecular Biosciences, 7 .
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Abstract
The predominant way in which conventional chemotherapy kills rapidly proliferating cancer cells is the induction of DNA damage. However, chemoresistance remains the main obstacle to therapy effectivity. An increasing number of studies suggest that epithelial-to-mesenchymal transition (EMT) represents a critical process affecting the sensitivity of cancer cells to chemotherapy. Zinc finger E-box binding homeobox 1 (ZEB1) is a prime element of a network of transcription factors controlling EMT and has been identified as an important molecule in the regulation of DNA damage, cancer cell differentiation, and metastasis. Recent studies have considered upregulation of ZEB1 as a potential modulator of chemoresistance. It has been hypothesized that cancer cells undergoing EMT acquire unique properties that resemble those of cancer stem cells (CSCs). These stem-like cells manifest enhanced DNA damage response (DDR) and DNA repair capacity, self-renewal, or chemoresistance. In contrast, functional experiments have shown that ZEB1 induces chemoresistance regardless of whether other EMT-related changes occur. ZEB1 has also been identified as an important regulator of DDR by the formation of a ZEB1/p300/PCAF complex and direct interaction with ATM kinase, which has been linked to radioresistance. Moreover, ATM can directly phosphorylate ZEB1 and enhance its stability. Downregulation of ZEB1 has also been shown to reduce the abundance of CHK1, an effector kinase of DDR activated by ATR, and to induce its ubiquitin-dependent degradation. In this perspective, we focus on the role of ZEB1 in the regulation of DDR and describe the mechanisms of ZEB1-dependent chemoresistance. © Copyright © 2020 Drápela, Bouchal, Jolly, Culig and Sou�ek.
| Item Type: | Journal Article |
|---|---|
| Publication: | Frontiers in Molecular Biosciences |
| Publisher: | Frontiers Media S.A. |
| Additional Information: | COPYRIGHT OF THIS ARTICLE BELONGS TO Frontiers Media S.A. |
| Keywords: | DNA damage responseEMT-epithelial to mesenchymal transitionplasticitytherapy resistanceZEB1 |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Biosystems Science and Engineering |
| Date Deposited: | 02 Nov 2021 12:12 |
| Last Modified: | 02 Nov 2021 12:12 |
| URI: | http://eprints.iisc.ac.in/id/eprint/65150 |
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