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Loss of Larp1 disrupts the synaptic localization of TOP mRNAs and impairs spatial memory.

GSE286175 Mus musculus (mouse) RNA-seq (gene expression) 12 samples Submitted 2026/02/18 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: 6 conditions, mostly in duplicateGroups 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
Larp1 supports brain growth and spatial memory via post-transcriptional control of the translation machinerybioRxiv : the preprint server for biology · 2025
Summary (written by the submitters)
Post-transcriptional regulation of mRNAs allows for rapid and local control of gene expression. In vertebrates, the mTOR Complex 1 pathway post-transcriptionally controls the translation and stability of terminal oligopyrimidine motif mRNAs (TOP mRNAs), which encode ribosomal proteins and other essential factors. These mRNAs also preferentially localize to neuronal synapses, axons and dendrites, suggesting a role in growth and/or plasticity.
Read the full summary ↓
To determine brain functions of TOP regulation, we generated mice where La-related protein 1 (Larp1), the TOP regulator downstream of mTORC1, is inactivated in neurons. These mice are viable but brain size is significantly reduced. The translation of TOP mRNAs is derepressed, but mRNA levels are depleted more than 50%. Depletion was exacerbated at synapses, reversing the enrichment observed in wild-type neurons, and accompanied by impaired spatial memory. These observations highlight the importance of post-transcriptional regulation of TOP mRNAs for brain growth and neuronal functions underlying learning and memory.
Published in
Larp1 supports brain growth and spatial memory via post-transcriptional control of the translation machinery
Williams MS, Watson MJ, Thoreen CC · bioRxiv : the preprint server for biology 2025 · PMID 41278816 · doi:10.1101/2025.10.09.681478
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 GSE286175_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 PRJNA1208063 and SRA study SRP556094. Searching any of these in the dataset finder brings you back here.

Study design
6 conditions, mostly in duplicate
Larp1 WT Cortex rep 1 ×2 Larp1 WT Cortex rep 2 ×2 Larp1 WT Cortex rep 3 ×2 Larp1 KO Cortex rep 1 ×2 Larp1 KO Cortex rep 2 ×2 Larp1 KO Cortex rep 3 ×2

Supports a between-group comparison across 12 samples.

How we read this: 6 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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