GSE39872
GSE GEOLIN28 binds messenger RNAs at GGAGA motifs and regulates splicing factor abundance (HTS)
Relations
Summary
LIN28 is a conserved RNA binding protein implicated in pluripotency, reprogramming and oncogenesis. Previously shown to act primarily by blocking let-7 microRNA (miRNA) biogenesis, here we elucidate distinct roles of LIN28 regulation via its direct messenger RNA (mRNA) targets. Through cross-linking and immunoprecipitation coupled with high-throughput sequencing (CLIP-seq) in human embryonic stem cells and somatic cells expressing exogenous LIN28, we have defined discrete LIN28 binding sites in a quarter of human transcripts. These sites revealed that LIN28 binds to GGAGA sequences enriched within loop structures in mRNAs, reminiscent of its interaction with let-7 miRNA precursors. Among LIN28 mRNA targets, we found evidence for LIN28 autoregulation and also direct but differing effects on the protein abundance of splicing regulators in somatic and pluripotent stem cells. Splicing-sensitive microarrays demonstrated that exogenous LIN28 expression causes widespread downstream alternative splicing changes. These findings identify important regulatory functions of LIN28 via direct mRNA interactions.
Overall Design
CLIP-seq for LIN28-V5 in stable human Flp-In-293 cells, and LIN28 in hES cells; strand-specific mRNA-seq for uninfected, control KD, and LIN28 KD human H9 ES cells; and strand-specific smallRNA-seq for uninfected, control KD, and LIN28 KD human H9 ES cells.
Analysis (3 steps)
View Data Processing- Read mapping from CLIP-seq experiments and data processing was performed as published (Polymenidou et al., 2011).
- Briefly, reads were processed and mapped to the human genome (hg18 http://genome.ucsc.edu; Bowtie version 0.12.2, with parameters -q -p 4 -e 70 -y -l 25 -n 2 -m 5 --best --strata) and assigned to 21,605 genes (as annotated previously (Yeo et al., 2009)).
- LIN28ES_CLIPseq_clusters.BED: hg18
Supplementary Files (1)
Dataset Citations (1)
SRA Experiments (8) and Runs (9)
Total: 2796 MBSample attributes
Original files (1)
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR531465 | 10992525 | 395730900 | 287.35 | SRR531465 | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR531466 | 19413017 | 970650850 | 668.85 | SRR531466 | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR531467 | 18347885 | 917394250 | 627.78 | LIN28KD_H9_rnaseq.fastq, SRR531467 | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR531468 | 14331910 | 716595500 | 501.08 | SRR531468 | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR531469 | 2845252 | 102429072 | 52.7 | SRR531469, SRR531469.sralite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR531470 | 7184143 | 287365720 | 206.68 | SRR531470 | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR531471 | 2293247 | 82556892 | 42.95 | SRR531471, SRR531471.sralite | SRA |
Linked Publications (1)
Data Files (9)
| Accession | File Name | Stored Type | Output Type | Mapping Assembly | Size | Download | |
|---|---|---|---|---|---|---|---|
| — | LIN28KD_H9_rnaseq.fastq | RNA-Seq | 627.8 MB | link | |||
| — | SRR531463 | RNA-Seq | 51.5 MB | link | |||
| — | SRR531464 | RNA-Seq | 357.0 MB | link | |||
| — | SRR531465 | RNA-Seq | 287.3 MB | link | |||
| — | SRR531466 | RNA-Seq | 668.8 MB | link | |||
| — | SRR531468 | RNA-Seq | 501.1 MB | link | |||
| — | SRR531469 | RNA-Seq | 52.7 MB | link | |||
| — | SRR531470 | RNA-Seq | 206.7 MB | link | |||
| — | SRR531471 | RNA-Seq | 42.9 MB | link |