Abstract:
:circRNAs arise from back splicing events during mRNA processing, and when deregulated can play an active role in cancer. Here we characterize a new circRNA (circPOK) encoded by the Zbtb7a gene (also kown as POKEMON, LRF) in the context of mesenchymal tumor progression. circPOK functions as a non-coding proto-oncogenic RNA independently and antithetically to its linear transcript counterpart, which acts as a tumor suppressor by encoding the Pokemon transcription factor. We find that circPOK regulates pro-proliferative and pro-angiogenic factors by co-activation of the ILF2/3 complex. Importantly, the expression of Pokemon protein and circRNA is aberrantly uncoupled in cancer through differential post-transcriptional regulation. Thus, we identify a novel type of genetic unit, the iRegulon, that yields biochemically distinct RNA products, circular and linear, with diverse and antithetical functions. Our findings further expand the cellular repertoire towards the control of normal biological outputs, while aberrant expression of such components may underlie disease pathogenesis including cancer.
journal_name
Cell Resjournal_title
Cell researchauthors
Guarnerio J,Zhang Y,Cheloni G,Panella R,Mae Katon J,Simpson M,Matsumoto A,Papa A,Loretelli C,Petri A,Kauppinen S,Garbutt C,Nielsen GP,Deshpande V,Castillo-Martin M,Cordon-Cardo C,Dimitrios S,Clohessy JG,Batish M,Pandoi
10.1038/s41422-019-0192-1subject
Has Abstractpub_date
2019-08-01 00:00:00pages
628-640issue
8eissn
1001-0602issn
1748-7838pii
10.1038/s41422-019-0192-1journal_volume
29pub_type
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