Temporal landscape and translational regulation of A-to-I editing in mouse retina development
Yang, L.; Yi, L.; Yang, J.; Zhang, R.; Xie, Z.; Wang, H.
Show abstract
The significance of A-to-I RNA editing in neurological development is widely recognized, however, its influence on retina development remains to be thoroughly understood. In this study, we aimed to characterize the temporal landscape of A-to-I editing in mouse retina development using total RNA-seq and Ribosome profiling, with a specific emphasis on its effect on gene translation. Our findings revealed that the editing underwent plastic changes and distinct editing contents facilitated stage-specific functions. Further analysis showed a dynamic interplay between A-to-I editing and alternative splicing, with A-to-I editing having a significant impact on splicing efficiency and increasing the quantity of splicing events. A-to-I editing held the potential of enhancing the translatomes diversity, but this came at the expense of reduced translational efficiency. When coupled with splicing, it could produce a coordinated regulatory effect on translatome dynamics. Overall, our study presents a temporally resolved atlas of A-to-I editing, connecting its dynamic changes with the regulatory impact on splicing and translation.
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