Abstract
Pancreatic ductal adenocarcinoma (PDAC) is the fourth cause of death by cancer in Western countries. Its poor prognosis is primarily explained by a lack of early diagnostic markers and efficient therapeutic treatments. PDAC does not appear de novo but rather originates of an accumulation of genetic and epigenetic alterations that leads to an aberrant production of diverse molecules such as RNA and proteins. These altered expression profiles result in a multi-step progression of precursor lesions to invasive PDAC. Therefore, a better understanding of the early genetic and epigenetic alterations occurring in PDAC development is valuable for diagnostic and new therapeutic strategies. MicroRNAs (miRNAs) are small endogenous RNA molecules that function as translation inhibitors of messenger RNA by binding to their 3′ untranslated region. These molecules are tightly involved in the regulation of many physiological processes such as development, proliferation, invasion, and apoptosis among others. Their expressions are profoundly altered in PDAC and are strongly involved in PDAC carcinogenesis. In this chapter, we describe the miRNAs for which the expression is altered in PDAC and PDAC pre-neoplastic lesions. We outline the different molecular mechanisms that lead to altered miRNA expression in PDAC cells as well as the signaling pathways affected in response to altered miRNA expression. Lastly, we review the potential interests of miRNA as biological markers and therapeutic tools for PDAC.
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Acknowledgments
We thank Dr Dina Arvanitis (Centre de Biologie du Développement, Toulouse) for critical reading of the manuscript. J.T. was funded by the Ligue Nationale contre le Cancer.
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Cordelier, P., Torrisani, J. (2011). MicroRNAs in Pancreatic Cancer: Potential Interests as Biomarkers and Therapeutic Tools. In: Cho, W. (eds) MicroRNAs in Cancer Translational Research. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0298-1_13
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DOI: https://doi.org/10.1007/978-94-007-0298-1_13
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