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CRISPR/Cas9-mediated gene knockout screen uncovers novel open reading frames encoded in lncRNA regulating ER+ breast cancer progression

ABSTRACT: CRISPR/Cas9-mediated gene knockout screen uncovers novel open reading frames encoded in lncRNA regulating ER+ breast cancer progression

PROVIDER: PRJNA807729 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18054547.fastq.gz	Fastqsanger.gz
	SRR18054548.fastq.gz	Fastqsanger.gz
	SRR18054549.fastq.gz	Fastqsanger.gz
	SRR18054550.fastq.gz	Fastqsanger.gz
	SRR18054551.fastq.gz	Fastqsanger.gz

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CRISPR/Cas9-mediated gene knockout screen uncovers novel open reading frames encoded in lncRNA regulating ER+ breast cancer progression

Project description:A large number of lncRNAs has been found aberrant expression in breast cancer and paly functional role in tumor progression. However, the role of small peptide hidden in lncRNA are largely unexplored. In this study, we applied the CRISPR/Cas9 screen and ribosome profiling to systematically discover nocanonical open reading frame encoded in long noncoding RNAs (lncRNAs) and explored their critical roles in ER+ breast cancer.

2023-03-18 | GSE196927 | GEO

Pervasive functional translation of noncanonical open reading frames

Project description:Pervasive functional translation of noncanonical open reading frames

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Pervasive functional translation of noncanonical open reading frames

Project description:Ribosome profiling has revealed pervasive but largely uncharacterized translation outside of canonical coding sequences (CDSs). Here, we exploit a systematic CRISPR-based screening strategy to identify hundreds of non-canonical CDSs that are essential for cellular growth and whose disruption elicit specific, robust transcriptomic and phenotypic changes in human cells. Functional characterization of the encoded microproteins reveals distinct cellular localizations, specific protein binding partners, and hundreds that are presented by the HLA system. Interestingly, we find multiple microproteins encoded in upstream open reading frames, which form stable complexes with the main, canonical protein encoded on the same mRNA, thus revealing the diverse use of functional bicistronic operons in mammals. Together, our results point to a family of functional human microproteins that play critical and diverse cellular roles.

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Systematic identification of small Open reading frames-encoded peptides during the life cycle of Drosophila melanogaster

Project description:SEPs (Small open reading frames-encoded peptides) identified from 11 time-points, which were chosen during drosophila’s complete life cycle.

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Identification of translated small open reading frames in lymphocytes

Project description:Identification of translated small open reading frames in lymphocytes

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Project description:Accurate annotation of human protein-coding small open reading frames

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Extensive translation of small Open Reading Frames revealed by Poly-Ribo-Seq

Project description:We present a genome-wide assessment of small open reading frames (smORF) translation by ribosomal profiling of polysomal fractions in Drosophila S2 cell. In this way, mRNAs bound by multiple ribosomes and hence actively translated can be isolated and distinguished from mRNAs bound by sporadic, putatively non-productive single ribosomes or ribosomal subunits. Ribosomal profiling of large and small polysomal fractions in Drosophila S2 cells to assess translation of smORFs

2014-09-11 | E-GEOD-60384 | biostudies-arrayexpress

Extensive translation of small Open Reading Frames revealed by Poly-Ribo-Seq

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Accurate annotation of human protein-coding small open reading frames

Project description:Protein-coding small open reading frames (smORFs) are emerging as an important class of genes, however, the coding capacity of smORFs in the human genome is unclear. By integrating de novo transcriptome assembly and Ribo-Seq, we confidently annotate thousands of novel translated smORFs in three human cell lines. We find that smORF translation prediction is noisier than for annotated coding sequences, underscoring the importance of analyzing multiple experiments and footprinting conditions. These smORFs are located within non-coding and antisense transcripts, the UTRs of mRNAs, and unannotated transcripts. Analysis of RNA levels and translation efficiency during cellular stress identifies regulated smORFs and provides an approach for identifying smORFs for further investigation. Sequence conservation and signatures of positive selection indicate that encoded microproteins are likely functional. Additionally, proteomics data from enriched human leukocyte antigen complexes validates the translation of hundreds of smORFs and positions them as a source of novel antigens. Thus, smORFs represent a significant number of important, yet unexplored human genes.

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The Translation of Non-Canonical Open Reading Frames Controls Mucosal Immunity

Project description:The Translation of Non-Canonical Open Reading Frames Controls Mucosal Immunity

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