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The p53 mRNA: an integral part of the cellular stress response
Umeå University, Faculty of Medicine, Department of Medical Biosciences.
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2019 (English)In: Nucleic Acids Research, ISSN 0305-1048, E-ISSN 1362-4962, Vol. 47, no 7, p. 3257-3271Article in journal (Refereed) Published
Abstract [en]

A large number of signalling pathways converge on p53 to induce different cellular stress responses that aim to promote cell cycle arrest and repair or, if the damage is too severe, to induce irreversible senescence or apoptosis. The differentiation of p53 activity towards specific cellular outcomes is tightly regulated via a hierarchical order of post-translational modifications and regulated protein-protein interactions. The mechanisms governing these processes provide a model for how cells optimize the genetic information for maximal diversity. The p53 mRNA also plays a role in this process and this review aims to illustrate how protein and RNA interactions throughout the p53 mRNA in response to different signalling pathways control RNA stability, translation efficiency or alternative initiation of translation. We also describe how a p53 mRNA platform shows riboswitch-like features and controls the rate of p53 synthesis, protein stability and modifications of the nascent p53 protein. A single cancer-derived synonymous mutation disrupts the folding of this platform and prevents p53 activation following DNA damage. The role of the p53 mRNA as a target for signalling pathways illustrates how mRNA sequences have co-evolved with the function of the encoded protein and sheds new light on the information hidden within mRNAs.

Place, publisher, year, edition, pages
Oxford University Press, 2019. Vol. 47, no 7, p. 3257-3271
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-159620DOI: 10.1093/nar/gkz124ISI: 000467965900007PubMedID: 30828720OAI: oai:DiVA.org:umu-159620DiVA, id: diva2:1324152
Available from: 2019-06-13 Created: 2019-06-13 Last updated: 2019-06-13Bibliographically approved

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Wang, LixiaoChen, SaFåhraeus, Robin

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