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Unanchored K63-linked polyubiquitin chains: a novel second messenger involved in G protein-coupled receptors early signaling events

GSE301643 Homo sapiens (human) RNA-seq (gene expression) 12 samples Submitted 2025/07/07 Platform GPL30173
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: 6 × P4329 vs 6 × P4352Groups 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
Unanchored K63-linked polyubiquitin chains: a novel second messenger involved in G protein-coupled receptors early signaling eventsCell communication and signaling : CCS · 2026
Summary (written by the submitters)
GPCR rapidly transduced extracellular cues via their ability to activate effector proteins leading to the production of a variety of well-characterized second messenger molecules. We describe here that the E3 ubiquitin ligase tumor necrosis factor receptor associated factor 6 (TRAF6) is required for the rapid and transient production of unanchored lysine (K)63-linked polyubiquitin chains in primary and transformed cells exposed to vasoactive agonists Angiotensin II (Ang II), Lysophosphatidic acid (LPA) and Thrombin (Thr).
Read the full summary ↓
We further show that unanchored K63-linked polyubiquitin chains accumulate in Transforming Growth Factor beta-activated kinase 1 (TAK1) and IkappaB kinase beta (IKKbeta) immunocomplexes and are required for the T-loop phosphorylation of TAK1 leading to IKKbeta, c- Jun N-terminal kinases (JNK1/2) and p38 mitogen-activated protein kinases (p38) phosphorylation and the induction of transcriptional events. Our results support a novel paradigm in field of GPCR signal transduction, identifying unanchored K63-linked polyubiquitin chains as novel second messenger molecules.
Published in
Unanchored K63-linked polyubiquitin chains: a novel second messenger involved in G protein-coupled receptors early signaling events
Doyon P, El-Mortada D, Roy J et al. · Cell communication and signaling : CCS 2026 · PMID 41507896 · doi:10.1186/s12964-025-02646-6
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 GSE301643_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 PRJNA1285873 and SRA study SRP598230. Searching any of these in the dataset finder brings you back here.

Study design
6 × P4329 vs 6 × P4352

Supports a between-group comparison across 12 samples.

How we read this: 2 replicated groups read from 12 sample titles; they account for 12 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
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Metadata from NCBI GEO, cached and refreshed periodically — the NCBI page above is authoritative. Downloads link straight to NCBI/ENA; nothing is proxied through BioTransfer.