The cellular interplay of alternative splicing and RNA-binding proteins. The cellular interplay of alternative splicing and RNA-binding proteins. Alternative.

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The cellular interplay of alternative splicing and RNA-binding proteins. The cellular interplay of alternative splicing and RNA-binding proteins. Alternative splicing factors travel between the nucleus and cytoplasm and associate with RNA-binding protein complexes, which allows them to perform different functions. In the nucleus, they control alternative splicing of pre-mRNAs; in the cytoplasm, they compete with miRNAs for binding to mRNAs, which negatively affects miRNA targeting efficiency. In addition, alternative splicing factors interact with miRNA biogenesis enzymes, which negatively affects miRNA production efficiency. Notably, these interactions are stress-dependent, suggesting their importance in the cellular stress response. On the other hand, miRNAs can directly target several alternative splicing factors, which globally influences the alternative splicing profile. Thus, the interplay between miRNA-based gene silencing of mRNAs and alternative splicing of pre-mRNAs is a crucial post-transcriptional mechanism that occurs in liquid-like organelles to regulate the cellular stress response. Mariya M. Kucherenko, and Halyna R. Shcherbata J Cell Sci 2018;131:jcs202002 © 2018. Published by The Company of Biologists Ltd