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p300-Mediated Histone H3K18 Lactylation Promotes Mitochondrial ROS Accumulation via Mitophagy Inhibition to Potentiate Dopamine Agonists Efficacy in Prolactinomas [RNA-seq]

GSE313569 Mus musculus (mouse) RNA-seq (gene expression) 12 samples Submitted 2026/03/11 Platform GPL34290
At a glance

RNA-seq (gene expression) · mouse · 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
Mus musculus (mouse)
Samples
12 samples: 3 × AtT-20 cells, B vs 3 × AtT-20 cells, L vs 3 × AtT-20 cells, NC vs 3 × AtT-20 cells, PGroups 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
p300-mediated histone H3K18 lactylation promotes mitochondrial ROS accumulation via mitophagy inhibition to potentiate dopamine agonists efficacy in prolactinomasRedox biology · 2026
Summary (written by the submitters)
Prolactinomas are the most common functional pituitary adenomas, with dopamine receptor agonists (DAs) as the first-line therapy. However, 10–30% of patients develop DA resistance, and the underlying mechanisms remain incompletely elucidated.Clinical samples were collected to analyze p300 expression.
Read the full summary ↓
Experiments including immunofluorescence, immunohistochemistry, gene editing, Western blot, co-immunoprecipitation, ChIP-qPCR, RNA/CUT&Tag sequencing, flow cytometry, Seahorse assay, and mass spectrometry were performed to explore the synergistic anti-tumor mechanism of upregulating/activating p300 combined with DAs. DAs downregulated p300 by inhibiting the cAMP-PKA-CREB pathway. Upregulating/activating p300 synergized with DAs to promote mitochondrial ROS elevation and cell apoptosis, which depends on p300’s histone acetyltransferase (HAT) domain mediating histone H3 lysine 18 lactylation (H3K18la). p300-mediated H3K18la significantly promoted intracellular ROS accumulation by upregulating Ndufs7 (promoting mitochondrial ROS production) and Washc1 (inhibiting mitophagy). YF-2, a p300 HAT domain activator, exhibited synergistic anti-tumor activity with DAs.This study reveals the p300-H3K18la- mitophagy-ROS regulatory axis, providing a new target and strategy for treating DA-resistant prolactinomas.
Published in
p300-mediated histone H3K18 lactylation promotes mitochondrial ROS accumulation via mitophagy inhibition to potentiate dopamine agonists efficacy in prolactinomas
Li S, Jiang Q, Wang Q et al. · Redox biology 2026 · PMID 41740506 · doi:10.1016/j.redox.2026.104077
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 GSE313569_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 PRJNA1380325 and SRA study SRP654756. Searching any of these in the dataset finder brings you back here.

Study design
3 × AtT-20 cells, B vs 3 × AtT-20 cells, L vs 3 × AtT-20 cells, NC vs 3 × AtT-20 cells, P

Supports a between-group comparison across 12 samples.

How we read this: 4 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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