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Published in: Cancer and Metastasis Reviews 1/2022

01-03-2022 | Metastasis | Non-Thematic Review

Emerging roles of epithelial-mesenchymal plasticity in invasion-metastasis cascade and therapy resistance

Author: Minal Garg

Published in: Cancer and Metastasis Reviews | Issue 1/2022

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Abstract

Strong association of cancer incidence and its progression with mortality highlights the need to decipher the cellular and molecular mechanisms that drive tumor cells to rapidly progress to metastatic disease and therapy resistance. Epithelial-mesenchymal plasticity (EMP) emerged as a key regulator of metastatic outgrowth. It allows neoplastic epithelial cells to delaminate from their neighbors either individually or collectively, traverse the extracellular matrix (ECM) barrier, enter into the circulation, and establish distal metastases. Plasticity between epithelial and mesenchymal states and the existence of hybrid epithelial/mesenchymal (E/M) phenotypes are increasingly being reported in different tumor contexts. Small subset of cancer cells with stemness called cancer stem cells (CSCs) exhibit plasticity, possess high tumorigenic potential, and contribute to high degree of tumoral heterogeneity. EMP characterized by the presence of dynamic intermediate states is reported to be influenced by (epi)genomic reprograming, growth factor signaling, inflammation, and low oxygen generated by tumor stromal microenvironment. EMP alters the genotypic and phenotypic characteristics of tumor cells/CSCs, disrupts tissue homeostasis, induces the reprogramming of angiogenic and immune recognition functions, and renders tumor cells to survive hostile microenvironments and resist therapy. The present review summarizes the roles of EMP in tumor invasion and metastasis and provides an update on therapeutic strategies to target the metastatic and refractory cancers.
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Metadata
Title
Emerging roles of epithelial-mesenchymal plasticity in invasion-metastasis cascade and therapy resistance
Author
Minal Garg
Publication date
01-03-2022
Publisher
Springer US
Keyword
Metastasis
Published in
Cancer and Metastasis Reviews / Issue 1/2022
Print ISSN: 0167-7659
Electronic ISSN: 1573-7233
DOI
https://doi.org/10.1007/s10555-021-10003-5

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