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LIN28A targets, regulation of microRNA biogenesis, and effect on transcriptome in A3-1 cells

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

OTHER RELATED OMICS DATASETS IN: PRJNA158271PRJNA158355PRJNA158351PRJNA158353

ORGANISM(S): Mus musculus

PROVIDER: GSE37114 | GEO | 2012/10/25

SECONDARY ACCESSION(S): PRJNA158271

REPOSITORIES: GEO

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LIN28A targets, regulation of microRNA biogenesis, and effect on transcriptome in A3-1 cells

Project description:LIN28A targets, regulation of microRNA biogenesis, and effect on transcriptome in A3-1 cells

| PRJNA158271 | ENA

LIN28A-mediated regulation of microRNA biogenesis in mouse embryonic stem cell (A3-1) [Agilent]

Project description:LIN28A is a highly-conserved RNA-binding protein which is known to be involved in embryonic development, stem cell maintenance and proliferation. LIN28A is expressed in various types of cancer, and they are associated with advanced tumor malignancy. In embryonic stem cell, LIN28A specifically binds to let-7 precursors to suppress biogenesis of the let-7 microRNA family. In addition, LIN28A was reported to bind several mRNAs such as Oct4, cyclin A/B and histone H2A to activate their translation. For comprehensive understanding of the interaction between LIN28A and their target RNAs, we exploited UV-crosslinking and immunoprecipitation (CLIP) to capture their in vivo binding to target RNAs. LIN28A-binding RNAs were identified in a mouse embryonic stem cell line using multiple monoclonal and polyclonal antibodies. The result shows that LIN28 preferentially binds to let-7 precursors through GGAG binding motif, which is consistent with our previous results. We also identified that LIN28A binding is enriched in a certain subset of mRNAs. To understand the function of the novel LIN28A-mRNA binding, we carried out ribosome profiling from LIN28A-depleted mouse embryonic stem cells.

2012-10-25 | GSE37112 | GEO

LIN28A-mediated regulation of microRNA biogenesis in mouse embryonic stem cell (A3-1) [Agilent]

2012-10-25 | E-GEOD-37112 | biostudies-arrayexpress

Lin28A and Lin28B inhibit let-7 microRNA biogenesis by distinct mechanisms.

Project description:Lin28A and Lin28B selectively block the expression of let-7 microRNAs and function as oncogenes in a variety of human cancers. Lin28A recruits a TUTase (Zcchc11/TUT4) to let-7 precursors to block processing by Dicer in the cell cytoplasm. Here we find that unlike Lin28A, Lin28B represses let-7 processing through a Zcchc11-independent mechanism. Lin28B functions in the nucleus by sequestering primary let-7 transcripts and inhibiting their processing by the Microprocessor. The inhibitory effects of Zcchc11 depletion on the tumorigenic capacity and metastatic potential of human cancer cells and xenografts are restricted to Lin28A-expressing tumors. Furthermore, the majority of human colon and breast tumors analyzed exclusively express either Lin28A or Lin28B. Lin28A is expressed in HER2-overexpressing breast tumors, whereas Lin28B expression characterizes triple-negative breast tumors. Overall our results illuminate the distinct mechanisms by which Lin28A and Lin28B function and have implications for the development of new strategies for cancer therapy.

| S-EPMC3227872 | biostudies-literature

Transcriptome-wide identification of LIN28A targets in mouse embryonic stem cell (A3-1) [Illumina Seq]

Project description:LIN28A is a highly-conserved RNA-binding protein which is known to be involved in embryonic development, stem cell maintenance and proliferation. LIN28A is expressed in various types of cancer, and they are associated with advanced tumor malignancy. In embryonic stem cell, LIN28A specifically binds to let-7 precursors to suppress biogenesis of the let-7 microRNA family. In addition, Lin28 was reported to bind several mRNAs such as Oct4, cyclin A/B and histone H2A to activate their translation. For comprehensive understanding of the interaction between LIN28A and their target RNAs, we exploited UV-crosslinking and immunoprecipitation (CLIP) to capture their in vivo binding to target RNAs. LIN28A-binding RNAs were identified in a mouse embryonic stem cell line using multiple monoclonal and polyclonal antibodies. The result shows that LIN28A preferentially binds to let-7 precursors through GGAG binding motif, which is consistent with our previous results. We also identified that LIN28A binding is enriched in a certain subset of mRNAs. To understand the function of the novel LIN28A-mRNA binding, we carried out ribosome profiling from LIN28A-depleted mouse embryonic stem cells.

2012-10-25 | GSE37111 | GEO

Transcriptome-wide identification of LIN28A targets in mouse embryonic stem cell (A3-1) [Illumina Seq]

Project description:LIN28A is a highly-conserved RNA-binding protein which is known to be involved in embryonic development, stem cell maintenance and proliferation. LIN28A is expressed in various types of cancer, and they are associated with advanced tumor malignancy. In embryonic stem cell, LIN28A specifically binds to let-7 precursors to suppress biogenesis of the let-7 microRNA family. In addition, Lin28 was reported to bind several mRNAs such as Oct4, cyclin A/B and histone H2A to activate their translation. For comprehensive understanding of the interaction between LIN28A and their target RNAs, we exploited UV-crosslinking and immunoprecipitation (CLIP) to capture their in vivo binding to target RNAs. LIN28A-binding RNAs were identified in a mouse embryonic stem cell line using multiple monoclonal and polyclonal antibodies. The result shows that LIN28A preferentially binds to let-7 precursors through GGAG binding motif, which is consistent with our previous results. We also identified that LIN28A binding is enriched in a certain subset of mRNAs. To understand the function of the novel LIN28A-mRNA binding, we carried out ribosome profiling from LIN28A-depleted mouse embryonic stem cells. Examination of RNA binding of LIN28A and translation in mouse embryonic stem cell.

2012-10-25 | E-GEOD-37111 | biostudies-arrayexpress

Cell-Independent MicroRNA Biogenesis

Project description:This SuperSeries is composed of the SubSeries listed below.

2014-08-27 | GSE60716 | GEO

Post-transcriptional regulation of Ribosome Biogenesis

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-08-03 | GSE231980 | GEO