Human Tra2 proteins jointly control a CHEK1 splicing switch among alternative and constitutive target exons

Autor: Best, Andrew, James, Katherine, Dalgliesh, Caroline, Hong, Elaine, Kheirolahi-Kouhestani, Mahsa, Curk, Tomaz, Yaobo Xu, Danilenko, Marina, Hussain, Rafiq, Keavney, Bernard, Wipat, Anil, Klinck, Roscoe, Cowell, Ian G., Cheong Lee, Ka, Austin, Caroline A., Venables, Julian P., Chabot, Benoit, Santibanez Koref, Mauro, Tyson-Capper, Alison, Elliott, David J.
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Nature Communications
BASE-Bielefeld Academic Search Engine
ISSN: 2041-1723
Popis: Alternative splicing—the production of multiple messenger RNA isoforms from a single gene—is regulated in part by RNA binding proteins. While the RBPs transformer2 alpha (Tra2α) and Tra2β have both been implicated in the regulation of alternative splicing, their relative contributions to this process are not well understood. Here we find simultaneous—but not individual—depletion of Tra2α and Tra2β induces substantial shifts in splicing of endogenous Tra2β target exons, and that both constitutive and alternative target exons are under dual Tra2α–Tra2β control. Target exons are enriched in genes associated with chromosome biology including CHEK1, which encodes a key DNA damage response protein. Dual Tra2 protein depletion reduces expression of full-length CHK1 protein, results in the accumulation of the DNA damage marker γH2AX and decreased cell viability. We conclude Tra2 proteins jointly control constitutive and alternative splicing patterns via paralog compensation to control pathways essential to the maintenance of cell viability.
RNA binding proteins are key regulators of alternative splicing. Here, Best et al. show that the human Tra2α and Tra2ß RNA binding proteins jointly contribute to the control of constitutive and alternative splicing events to regulate essential biological processes including the response to DNA damage.
Databáze: OpenAIRE
Externí odkaz: