hnRNP A1/A2 and Sam68 collaborate with SRSF10 to control the alternative splicing response to oxaliplatin-mediated DNA damage.
hnRNP A1/A2 and Sam68 collaborate with SRSF10 to control the alternative splicing response to oxaliplatin-mediated DNA damage.
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DOI:
10.1038/s41598-018-20360-x
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发表时间:
2018-02-02
影响因子:
4.6
通讯作者:
Chabot B
中科院分区:
文献类型:
--
作者:
Cloutier A;Shkreta L;Toutant J;Durand M;Thibault P;Chabot B
Little is known about how RNA binding proteins cooperate to control splicing, and how stress pathways reconfigure these assemblies to alter splice site selection. We have shown previously that SRSF10 plays an important role in the Bcl-x splicing response to DNA damage elicited by oxaliplatin in 293 cells. Here, RNA affinity assays using a portion of the Bcl-x transcript required for this response led to the recovery of the SRSF10-interacting protein 14-3-3ε and the Sam68-interacting protein hnRNP A1. Although SRSF10, 14-3-3ε, hnRNP A1/A2 and Sam68 do not make major contributions to the regulation of Bcl-x splicing under normal growth conditions, upon DNA damage they become important to activate the 5′ splice site of pro-apoptotic Bcl-xS. Our results indicate that DNA damage reconfigures the binding and activity of several regulatory RNA binding proteins on the Bcl-x pre-mRNA. Moreover, SRSF10, hnRNP A1/A2 and Sam68 collaborate to drive the DNA damage-induced splicing response of several transcripts that produce components implicated in apoptosis, cell-cycle control and DNA repair. Our study reveals how the circuitry of splicing factors is rewired to produce partnerships that coordinate alternative splicing across processes crucial for cell fate.
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