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Dual Roles for Epithelial Splicing Regulatory Proteins 1 (ESRP1) and 2 (ESRP2) in Cancer Progression

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Protein Reviews

Part of the book series: Advances in Experimental Medicine and Biology ((PROTRE,volume 925))

Abstract

Epithelial splicing regulatory protein 1 (ESRP1) and 2 (ESRP2) are members of the hnRNP family of RNA binding proteins that regulate alternative splicing events associated with epithelial phenotypes. These proteins play crucial roles during organogenesis, including craniofacial and epidermal development as well as branching morphogenesis in the lungs and salivary glands. Recent reports have also addressed their roles during cancer progression. Expression of ESRP proteins is low in normal epithelium but upregulated in carcinoma in situ and advanced carcinomas. Intriguingly, they are downregulated in invasive fronts. The plastic nature of ESRP expression suggests dual roles for them in cancer progression. Consistently, it has been shown that ESRPs suppress motility and anchorage-independent growth of cancer cells while supporting cell survival by enhancing resistance to reactive oxygen species. Regulatory circuits that fine-tune ESRP gene expression have recently emerged. Here, we summarize recent findings on the molecular mechanisms by which ESRPs exert positive as well as negative effects on cancer progression.

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Abbreviations

δEF1:

δ-crystallin enhancer binding protein

EMT:

epithelial-mesenchymal transition

ESRP:

epithelial splicing regulatory protein

FGF:

fibroblast growth factor

FGFR:

fibroblast growth factor receptor

hnRNP:

heterogenous nuclear ribonucleoprotein

HNSCC:

head and neck squamous carcinoma

RRM:

RNA-recognition motif

SIP1:

Smad interacting protein 1.

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Acknowledgement

This work was supported by the Vehicle Racing Commemorative Foundation and the JSPS Core-to-Core Program ‘Cooperative International Framework in TGF-β Family Signaling’.

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None declared

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Correspondence to Keiji Miyazawa .

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Hayakawa, A., Saitoh, M., Miyazawa, K. (2016). Dual Roles for Epithelial Splicing Regulatory Proteins 1 (ESRP1) and 2 (ESRP2) in Cancer Progression. In: Atassi, M. (eds) Protein Reviews. Advances in Experimental Medicine and Biology(), vol 925. Springer, Singapore. https://doi.org/10.1007/5584_2016_50

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