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Sirt5 regulates chondrocyte metabolism and osteoarthritis development through protein lysine malonylation

GSE272422 Mus musculus (mouse) RNA-seq (gene expression) 12 samples Submitted 2025/12/01 Platform GPL24247
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
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
Regulation of Chondrocyte Metabolism and Osteoarthritis Development by Sirt5 Through Protein Lysine MalonylationArthritis & rheumatology (Hoboken, N.J.) · 2025
Summary (written by the submitters)
Chondrocyte metabolic dysfunction plays an important role in osteoarthritis (OA) development during aging and obesity. However, it is unknown how metabolic dysfunction occurs during these two conditions. Proteins post-translational modifications (PTMs) have recently emerged as an important regulator of cellular metabolism. We previously reported that one type of PTM, lysine malonylation (MaK) was increased in cartilage during obesity.
Read the full summary ↓
Sirt5, the only known mammalian demalonylase, declines in cartilage during aging. To elucidate the interplay between Sirt5 deficiency and obesity in joint degeneration, we deploy systemic and cartilage-specific conditional knockout mouse models. Our findings reveal that the combination of Sirt5 deficiency and obesity exacerbates joint degeneration in mice. Through comprehensive proteomics analysis, we delineate the malonylome in chondrocytes, pinpointing MaK's predominant impact on various metabolic pathways such as carbon metabolism and glycolysis. Further biochemical investigation focuses on glyceraldehyde 3-phosphate dehydrogenase (GAPDH), a target of MaK, confirming a reduction in its enzymatic activity and functionality by MaK. Lastly, we identified a rare coding mutation in SIRT5 that dominantly segregates in a family with hand OA. The mutation results in substitution of an evolutionally invariant phenylalanine (Phe–F) to leucine (Leu–L) (F101L), which is located in the catalytic domain. F101L mutant results in higher MaK level and decreased expression of cartilage ECM genes (e.g., Acan and Col2a1) and upregulation of inflammation associated genes (e.g., Il6 and Nos2). In conclusion, we found that Sirt5 mediated MaK is an important regulator of chondrocyte cellular metabolism and dysregulation of Sirt5-MaK could be an important mechanism underlying aging and obesity associated OA development.
Published in
Regulation of Chondrocyte Metabolism and Osteoarthritis Development by Sirt5 Through Protein Lysine Malonylation
Liu H, Binoy A, Ren S et al. · Arthritis & rheumatology (Hoboken, N.J.) 2025 · PMID 40176311 · doi:10.1002/art.43164
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 GSE272422_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 PRJNA1136849 and SRA study SRP520483. Searching any of these in the dataset finder brings you back here.

Samples in this study

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+ 12 more — browse all 12 samples with per-sample file links →

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