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Transcriptomic profiles of ovarian cancer cells incubated with autologous ascitic fluids from patients before and after chemotherapy

GSE241909 Homo sapiens (human) RNA-seq (gene expression) 12 samples Submitted 2024/04/24 Platform GPL16791Platform GPL18573
At a glance

RNA-seq (gene expression) · human · 12 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
12 samples: 3 × cancer cells from patient 1 incubated with ascites before chemotherapy, repeat vs 3 × cancer cells from patient 1 incubated with ascites after chemotherapy, repeatGroups 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
Therapy-induced secretion of spliceosomal components mediates pro-survival crosstalk between ovarian cancer cellsNature communications · 2024
Summary (written by the submitters)
Ovarian cancer is characterized by transcoelomic metastasis into the peritoneal cavity. The peritoneal malignant ascites is enriched with ovarian cancer cells and a small amount of tumor-associated immune cells which create a unique microenvironment actively contributing to progression of the disease. However, it is remain unclear how chemonaive and post-chemotherapy ovarian cancer ascitic fluids influence on cancer cells.
Read the full summary ↓
To address this issue, we performed RNAseq analysis of primary cultures of ovarian cancer cells incubated for 3 days in the presence of ascites from the same patients before and after chemotherapy. We found that ascites after therapy causes a significant changes in transcriptomic profiles of cancer cells, and these changes are similar in samples obtained from all patients (n=4). Enrichment analysis of differentially expressed genes in tumor cells incubated with ascites after chemotherapy identified prominent up-regulation of genes associated with DNA repair, mitotic cell cycle regulation, and cell cycle checkpoints. These findings demonstrate how ascitic fluids persisted after chemotherapy can contribute to the emergence of tumor chemoresistance during short time period.
Published in
Therapy-induced secretion of spliceosomal components mediates pro-survival crosstalk between ovarian cancer cells
Shender VO, Anufrieva KS, Shnaider PV et al. · Nature communications 2024 · PMID 38898005 · doi:10.1038/s41467-024-49512-6
This dataset
Open GSE241909 in finder → Find more human RNA-seq datasets →
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.

Series matrix ↓
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 GSE241909_RAW.tar (it can run to tens of gigabytes).

All supplementary files ↗ Whole study · RAW.tar ↓
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.

Raw reads on ENA ↗

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 PRJNA1010737 and SRA study SRP457546. Searching any of these in the dataset finder brings you back here.

NCBI GEO page ↗ Paper (PMID 38898005) ↗
Study design
3 × cancer cells from patient 1 incubated with ascites before chemotherapy, repeat vs 3 × cancer cells from patient 1 incubated with ascites after chemotherapy, repeat

Supports a between-group comparison across 6 samples.

How we read this: 2 replicated groups read from 12 sample titles; they account for 6 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
Datasets on a similar topic

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