Abstract
The importance of Par-4 in apoptosis has been deciphered in depth. Interestingly, a paradigm shift is emerging with respect to the non-canonical roles of Par-4. The intricacy between Par-4 and EMT is significantly gaining traction, which is the main focus of this chapter. The chapter commences as we first delineate EMT’s transitory and dynamic nature as opposed to the conventional view that portrays EMT as unidirectional and irreversible. We have emphasized EMT’s culpability in the genesis of the metastatic program and how EMT-associated transcription factors (EMT-TFs) manipulate the cancer cells to acquire a motile phenotype suitable for intravasation, migration, and secondary metastasis. We as well discuss the molecular signaling pathways regulating EMT and the challenges rendered by the acquisition of EMT in cancer therapeutics. In the later sections, we have diligently highlighted the emergence of Par-4 as a prospective EMT nullifying candidate and therapeutic opportunities thus evolving around it. Particular emphasis is attributed to novel burgeoning role of Par-4-mediated negative regulation of the following anti-metastatic cascades; for example, modulation of β-catenin pathway, cytoskeletal rearrangements, and extracellular (ECM) remodeling and of course the anti-metastatic microRNAs. Lastly, we put forth innovative insights that link Par-4- and TGF-β-mediated lethal EMT.
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Faheem, M.M., Katoch, A., Goswami, A. (2021). Role of Par-4 in EMT. In: Rangnekar, V.M. (eds) Tumor Suppressor Par-4. Springer, Cham. https://doi.org/10.1007/978-3-030-80558-6_1
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