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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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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DOI: https://doi.org/10.1007/5584_2016_50
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