Evidence map›Paper›PMID 39794539›Full record

ArticleNature metabolism2025

The pentose phosphate pathway controls oxidative protein folding and prevents ferroptosis in chondrocytes.

Shauni Loopmans, Katerina Rohlenova, Thomas van Brussel, Ingrid Stockmans, Karen Moermans, Nicolas Peredo, Peter Carmeliet, Diether Lambrechts, Steve Stegen, Geert Carmeliet

Abstract read
In one paragraph

Article in Nature metabolism, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Article
  2. Review
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  5. Article
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  8. Comparative Phosphoproteomics of TwoJournal of fungi (Basel, Switzerland) · 2026
    Article
  9. Review
  10. Dietary supplementation withFrontiers in microbiology · 2026
    Article
  11. Article
  12. Review
  13. Article
  14. Review
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  16. Review
  17. Article
  18. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Shauni LoopmansLaboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium.ORCID http://orcid.org/0000-0002-6188-3949
Katerina RohlenovaLaboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, VIB Center for Cancer Biology, VIB, Leuven, Belgium.ORCID http://orcid.org/0000-0003-3964-8472
Thomas van BrusselLaboratory of Translational Genetics, VIB Center for Cancer Biology, Leuven, Belgium.
Ingrid StockmansLaboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium.
Karen MoermansLaboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium.
Nicolas PeredoVIB Bioimaging Core Leuven, Center for Brain and Disease Research, Leuven, Belgium.ORCID http://orcid.org/0000-0002-4670-3700
Peter CarmelietLaboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, VIB Center for Cancer Biology, VIB, Leuven, Belgium.ORCID http://orcid.org/0000-0001-7961-1821
Diether LambrechtsLaboratory of Translational Genetics, VIB Center for Cancer Biology, Leuven, Belgium.ORCID http://orcid.org/0000-0002-3429-302X
Steve StegenLaboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium.ORCID http://orcid.org/0000-0002-4471-6401
Geert CarmelietLaboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium. geert.carmeliet@kuleuven.be.ORCID http://orcid.org/0000-0001-8324-4462

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bone lengthening and fracture repair depend on the anabolic properties of chondrocytes that function in an avascular milieu. The limited supply of oxygen and nutrients calls into question how biosynthesis and redox homeostasis are guaranteed. Here we show that glucose metabolism by the pentose phosphate pathway (PPP) is essential for endochondral ossification. Loss of glucose-6-phosphate dehydrogenase in chondrocytes does not affect cell proliferation because reversal of the non-oxidative PPP produces ribose-5-phosphate. However, the decreased NADPH production reduces glutathione recycling, resulting in decreased protection against the reactive oxygen species (ROS) produced during oxidative protein folding. The disturbed proteostasis activates the unfolded protein response and protein degradation. Moreover, the oxidative stress induces ferroptosis, which, together with altered matrix properties, results in a chondrodysplasia phenotype. Collectively, these data show that in hypoxia, the PPP is crucial to produce reducing power that confines ROS generated by oxidative protein folding and thereby controls proteostasis and prevents ferroptosis.

Indexed as

ChondrocytesFerroptosisPentose Phosphate PathwayProtein FoldingAnimalsGlucoseGlucosephosphate DehydrogenaseMiceOxidation-ReductionOxidative StressProteostasisReactive Oxygen SpeciesGlucoseGlucosephosphate DehydrogenaseReactive Oxygen Species

Identifiers

PMID39794539
PMCPMC11774761

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.