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Integrating Gene Expression and Splicing Dynamics Across Dose-Response Oxidative Modulators

GSE241672 Homo sapiens (human) RNA-seq (gene expression) 400 samples Submitted 2024/05/15 Platform GPL24676
At a glance

RNA-seq (gene expression) · human · 400 samples

What it is
RNA-seq (gene expression)Gene activity measured by sequencing. The summary does not mention single-cell work, so this is most likely bulk: one average per sample, the usual starting point for comparing groups.
Organism
Homo sapiens (human)
Samples
400 samples: 100 conditions, mostly with about 4 replicates eachGroups are read from the sample names, not from the paper. Check the list below.
Data you can get
A processed table (series matrix) and supplementary files from NCBI; the raw sequencing reads from ENA. Which of these hold counts depends on the study, so check the file list.
Paper
Integrating gene expression and splicing dynamics across dose-response oxidative modulatorsFrontiers in genetics · 2024
Summary (written by the submitters)
Toxicological risk assessment increasingly utilizes transcriptomics to derive point of departure (POD) and modes of action (MOA) for chemicals. One essential biological process that allows a single gene to generate several different RNA isoforms is called alternative splicing. To comprehensively assess the role of splicing dysregulation in toxicological evaluation and elucidate its potential as a complementary endpoint, we performed RNA-seq on A549 cells treated with five oxidative stress modulators across a wide dose range.
Read the full summary ↓
Differential gene expression (DGE) showed limited pathway enrichment except at high concentrations. However, alternative splicing analysis revealed variable intron retention events affecting diverse pathways for all chemicals in the absence of significant expression changes. For instance, diazinon elicited negligible gene expression changes but progressive increase in the number of intron retention events, suggesting splicing alterations precede expression responses. Benchmarkdose modeling of intron retention data highlighted relevant pathways overlooked by expression analysis. Systematic integration of splicing datasets should be a useful addition to the toxicogenomic toolkit. Combining both modalities paint amore complete picture of transcriptomic dose-responses. Overall, evaluating intron retention dynamics afforded by toxicogenomics may provide biomarkers that can enhance chemical risk assessment and regulatory decision making. This work highlights splicing-aware toxicogenomics as a possible additional tool for examining cellular responses.
Published in
Integrating gene expression and splicing dynamics across dose-response oxidative modulators
Barutcu AR, Black MB, Samuel R et al. · Frontiers in genetics 2024 · PMID 38846964 · doi:10.3389/fgene.2024.1389095
This dataset
Download · which file do I need?

Direct links to NCBI and ENA, no account and no request form. Pick by what you want to do: take the small processed table to look, the supplementary files to re-analyse, or the original raw data to start over.

1 · Just have a look

Processed table

The series matrix: one table of values per sample as the submitters processed it. The smallest download, and it opens in Excel or R. Start here to see what the data look like.

2 · Re-analyse it

Supplementary files

The count tables and other files the authors uploaded. Take only the samples you need, or the whole study as GSE241672_RAW.tar (it can run to tens of gigabytes).

3 · Start from the raw reads

Raw sequencing reads

The original FASTQ files, straight from the sequencer, held at ENA. Large, and you align them yourself, so only choose this if you need to re-process the study from scratch.

What the files usually look like: For RNA-seq the counts are usually a table among the supplementary files (look for 'counts', 'expression', 'FPKM' or 'TPM' in the file name). The series matrix of a sequencing study is sometimes nearly empty.

Also filed as BioProject PRJNA1009099 and SRA study SRP457471. Searching any of these in the dataset finder brings you back here.

Study design
100 conditions, mostly with about 4 replicates each
0.01uM_Paraquat_A549, A ×4 0uM_Paraquat_A549, A ×4 0.0316uM_Paraquat_A549, A ×4 0.1uM_Paraquat_A549, A ×4 0.316uM_Paraquat_A549, A ×4 1uM_Paraquat_A549, A ×4 3.16uM_Paraquat_A549, A ×4 10uM_Paraquat_A549, A ×4 +92 more

Supports a between-group comparison across 400 samples.

How we read this: 100 replicated groups read from 400 sample titles; they account for 400 of them. These groups are guessed from the sample names, not taken from the paper, so check them against the sample list below before relying on them.

Samples in this study

+ 360 more — browse all 400 samples with per-sample file links →

Datasets on a similar topic

Search all human RNA-seq datasets in GEO →

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