ABSTRACT
Many cancers are characterized by gene fusions encoding oncogenic chimeric transcription factors (TFs) such as EWS::FLI1 in Ewing sarcoma (EwS). Here, we find that EWS::FLI1 induces the robust expression of a specific set of novel spliced and polyadenylated transcripts within otherwise transcriptionally silent regions of the genome. These neogenes (NGs) are virtually undetectable in large collections of normal tissues or non-EwS tumors and can be silenced by CRISPR interference at regulatory EWS::FLI1-bound microsatellites. Ribosome profiling and proteomics further show that some NGs are translated into highly EwS-specific peptides. More generally, we show that hundreds of NGs can be detected in diverse cancers characterized by chimeric TFs. Altogether, this study identifies the transcription, processing, and translation of novel, specific, highly expressed multi-exonic transcripts from otherwise silent regions of the genome as a new activity of aberrant TFs in cancer.
Subject(s)
Carcinogenesis , Gene Expression Regulation, Neoplastic , Oncogene Proteins, Fusion , Proto-Oncogene Protein c-fli-1 , Transcription Factors , Carcinogenesis/genetics , Cell Line, Tumor , Gene Expression Regulation, Neoplastic/genetics , Gene Silencing , Genome/genetics , Genomics , Humans , Oncogene Proteins, Fusion/genetics , Oncogene Proteins, Fusion/metabolism , Oncogenes/genetics , Proto-Oncogene Protein c-fli-1/genetics , Proto-Oncogene Protein c-fli-1/metabolism , Sarcoma, Ewing/genetics , Sarcoma, Ewing/metabolism , Sarcoma, Ewing/pathology , Transcription Factors/genetics , Transcription, Genetic/geneticsABSTRACT
Correction for 'Micro- and nanoplastic transfer in freezing saltwater: implications for their fate in polar waters' by Alice Pradel et al., Environ. Sci.: Processes Impacts, 2021, 23, 1759-1770, DOI: 10.1039/D1EM00280E.