GSE167466
GSE GEOCrosstalk between CRISPR-Cas9 and the human transcriptome
Relations
Summary
CRISPR-Cas9 expression independent of its cognate synthetic guide RNA (gRNA) causes widespread genomic DNA damage in human cells. To investigate whether Cas9 can interact with endogenous human RNA transcripts independent of its guide, we perform eCLIP (enhanced CLIP) of Cas9 in human cells and find that Cas9 reproducibly interacts with hundreds of endogenous human RNA transcripts. This association can be partially explained by a model built on gRNA secondary structure and sequence. Critically, transcriptome-wide Cas9 binding sites do not appear to correlate with published genome-wide Cas9 DNA binding or cut-site loci under gRNA co-expression. However, even under gRNA co-expression low-affinity Cas9-human RNA interactions (which we term CRISPR crosstalk) do correlate with published elevated transcriptome-wide RNA editing. Our findings do not support the hypothesis that human RNAs can broadly guide Cas9 to bind and cleave human genomic DNA, but they illustrate a clear cellular RNA impact likely inherent to CRISPR-Cas systems.
Overall Design
Crosslinking and immunoprecipitation of dSpCas9 with bound RNA and sequencing from 2 bioreplicates with V5 and FLAG antibodies, with 2 controls (size-matched input; empty vector IP).
Analysis (18 steps)
View Data Processing- Sequenced reads were reformatted to include randomers in read headers with umi_tools (1.0.0).
- Args: --random-seed 1 --bc-pattern NNNNNNNNNN
- Reads were then trimmed with cutadapt (1.14).
- Args: --match-read-wildcards -O 1 --times 1 -e 0.1 --quality-cutoff 6 -m 18 -a InvRNA*.fasta (fasta sequences can be found at: https://github.com/YeoLab/eclip/tree/master/example/inputs/)
- Reads were then trimmed once more with cutadapt (1.14) to remove double-ligation events.
- Args: --match-read-wildcards -O 5 --times 1 -e 0.1 --quality-cutoff 6 -m 18 -a InvRNA*.fasta (fasta sequences can be found at: https://github.com/YeoLab/eclip/tree/master/example/inputs/)
- Trimmed reads were then mapped with STAR (2.4.0i) against a human-specific repeat element database (RepBase 18.05).
- Args: --runThreadN 16 \ --genomeDir human_repbase \ --readFilesIn path/to/read1 \ --outFileNamePrefix out_prefix \ --outReadsUnmapped Fastx \ --outSAMtype BAM Unsorted \ --outSAMattributes All \ --outSAMunmapped Within \ --outSAMattrRGline ID:foo \ --outFilterType BySJout \ --outFilterMultimapNmax 30 \ --outFilterMultimapScoreRange 1 \ --outFilterScoreMin 10 \ --alignEndsType EndToEnd
Supplementary Files (5)
Dataset Citations (1)
SRA Experiments (12) and Runs (12)
Total: 7709 MBSample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779885 | 23882121 | 1815041196 | 643.23 | V5_CAS9_1N_S1_L001_R1_001.fastq.gz, SRR13779885, SRR13779885.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779886 | 25243266 | 1918488216 | 686.37 | V5_CAS9_1P_S2_L001_R1_001.fastq.gz, SRR13779886, SRR13779886.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779887 | 16028948 | 1218200048 | 419.85 | Assa_2N_S60_L005_R1_001.fastq.gz, SRR13779887, SRR13779887.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779888 | 22043341 | 1675293916 | 591.44 | Assa_2P_S61_L005_R1_001.fastq.gz, SRR13779888, SRR13779888.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779889 | 35142422 | 2670824072 | 955.25 | V5_pCDNA_8P_S9_L001_R1_001.fastq.gz, SRR13779889, SRR13779889.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779890 | 23480278 | 1784501128 | 644.08 | V5_pCDNA_9P_S10_L001_R1_001.fastq.gz, SRR13779890, SRR13779890.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779891 | 22111242 | 1680454392 | 602.85 | FLAG_CAS9_4N_S5_L001_R1_001.fastq.gz, SRR13779891, SRR13779891.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779892 | 24534276 | 1864604976 | 681.25 | FLAG_CAS9_4P_S6_L001_R1_001.fastq.gz, SRR13779892, SRR13779892.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779893 | 21799767 | 1656782292 | 592.44 | FLAG_CAS9_6N_S7_L001_R1_001.fastq.gz, SRR13779893, SRR13779893.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779894 | 22589919 | 1716833844 | 617.6 | FLAG_CAS9_6P_S8_L001_R1_001.fastq.gz, SRR13779894, SRR13779894.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779895 | 22066895 | 1677084020 | 610.42 | FLAG_pCDNA_11P_S11_L001_R1_001.fastq.gz, SRR13779895, SRR13779895.lite | SRA |
Sample attributes
Original files (1)
Runs (1)
| Run | Spots | Bases | Size (MB) | Files | Link |
|---|---|---|---|---|---|
| SRR13779896 | 24069912 | 1829313312 | 664.17 | FLAG_pCDNA_12P_S12_L001_R1_001.fastq.gz, SRR13779896, SRR13779896.lite | SRA |
Linked Publications (1)
Data Files (12)
| Accession | File Name | Stored Type | Output Type | Mapping Assembly | Size | Download | |
|---|---|---|---|---|---|---|---|
| — | Assa_2N_S60_L005_R1_001.fastq.gz | RIP-Seq | 419.8 MB | link | |||
| — | Assa_2P_S61_L005_R1_001.fastq.gz | RIP-Seq | 591.4 MB | link | |||
| — | FLAG_CAS9_4N_S5_L001_R1_001.fastq.gz | RIP-Seq | 602.8 MB | link | |||
| — | FLAG_CAS9_4P_S6_L001_R1_001.fastq.gz | RIP-Seq | 681.2 MB | link | |||
| — | FLAG_CAS9_6N_S7_L001_R1_001.fastq.gz | RIP-Seq | 592.4 MB | link | |||
| — | FLAG_CAS9_6P_S8_L001_R1_001.fastq.gz | RIP-Seq | 617.6 MB | link | |||
| — | FLAG_pCDNA_11P_S11_L001_R1_001.fastq.gz | RIP-Seq | 610.4 MB | link | |||
| — | FLAG_pCDNA_12P_S12_L001_R1_001.fastq.gz | RIP-Seq | 664.2 MB | link | |||
| — | V5_CAS9_1N_S1_L001_R1_001.fastq.gz | RIP-Seq | 643.2 MB | link | |||
| — | V5_CAS9_1P_S2_L001_R1_001.fastq.gz | RIP-Seq | 686.4 MB | link | |||
| — | V5_pCDNA_8P_S9_L001_R1_001.fastq.gz | RIP-Seq | 955.2 MB | link | |||
| — | V5_pCDNA_9P_S10_L001_R1_001.fastq.gz | RIP-Seq | 644.1 MB | link |