Editorial:
Cell Stress, Vol. 10, No. 1, pp. 49 - 52; doi: 10.15698/cst2026.07.318
Polyamine-mediated inhibition of ferroptosis contributes to geroprotection
1 Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz 8010, Austria. 2 BioHealth Graz, Graz 8010, Austria. 3 BioTechMed Graz, Graz 8010, Austria. 4 Université Paris Cité, Sorbonne Université, Inserm U1138, Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Paris, France. 5 Université Paris-Saclay, INSERM US23/CNRS UAR 3655, Metabolomics and Cell Biology Platforms, UMS AMMICa, Institut Gustave Roussy, Villejuif, France. 6 Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris, France.
Keywords: aging, cell death, metabolism, spermidine, spermine, autophagy
Received originally: 08/06/2026 Received in revised form: 17/06/2026
Accepted: 19/06/2026
Published: 03/07/2026
Correspondence:
Frank Madeo, frank.madeo@uni-graz.at;
Guido Kroemer, kroemer@orange.fr
Conflict of interest statement: GK has been holding research contracts with Daiichi Sankyo, Eleor, Kaleido, Lytix Pharma, PharmaMar, Osasuna Therapeutics, Samsara Therapeutics, Sanofi, Sutro, Tollys, and Vascage. GK is on the Board of Directors of the Bristol Myers Squibb Foundation France. GK is a scientific co-founder of everImmune, Osasuna Therapeutics, Samsara Therapeutics, Sanvitalia and Therafast Bio. GK is in the scientific advisory boards of Hevolution, Institut Servier, and Rejuveron Life Sciences/Centenara Labs AG. GK is the inventor of patents covering therapeutic targeting of aging, cancer, cystic fibrosis and metabolic disorders. GK’s brother, Romano Kroemer, was an employee of Sanofi and now consults for Boehringer-Ingelheim. GK’s wife, Laurence Zitvogel, has held research contracts with Glaxo Smyth Kline, Incyte, Lytix, Kaleido, Innovate Pharma, Daiichi Sankyo, Pilege, Merus, Transgene, 9 m, Tusk and Roche, was on the on the Board of Directors of Transgene, is a cofounder of everImmune, and holds patents covering the treatment of cancer and the therapeutic manipulation of the microbiota. FM is an advisor for TLL The Longevity Labs GmbH..
Please cite this article as: Frank Madeo, Didac Carmona-Gutierrez, Guido Kroemer (2026). Polyamine-mediated inhibition of ferroptosis contributes to geroprotection. Cell Stress 10: 49-52. doi: 10.15698/cst2026.07.318
Geroprotection aims at extending healthspan by delaying age-associated pathologies. Polyamines including spermine and spermidine are interconvertible metabolites whose longevity-promoting effects have traditionally been attributed to autophagy induction. In addition, recent evidence identifies spermine as an endogenous Fe2+ chelator that suppresses ferroptosis, thereby complementing the autophagy-inducing activity of spermidine. Indeed, spermidine inhibits EP300 acetyltransferase activity and supports hypusination-dependent activation of TFEB, both leading to autophagy. However, enhanced autophagic flux may increase susceptibility to ferroptosis through ferritinophagy and lipid remodeling. In parallel, polyamine catabolism generates H2O2 and acrolein, both of which facilitate lipid peroxidation and ferroptotic demise. The discovery that spermine directly chelates redox-active Fe2+ closes a conceptual gap by explaining how polyamine supplementation can promote longevity while avoiding excessive ferroptotic cell loss. Multiple lines of evidence including metabolomics, isotope tracing, cell-free lipid peroxidation systems, Fe2+-binding biophysics, mass spectrometry, Raman spectroscopy, nuclear magnetic resonance and disease models demonstrate that spermine limits labile iron and ferroptosis. Together, these findings support a unified model in which spermidine-driven autophagy and spermine-mediated ferroptosis inhibition cooperate to preserve tissue homeostasis and healthspan.
For full text please see pdf.
ACKNOWLEDGMENTS
GK is supported by the Ligue contre le Cancer (équipes labellisées); Agence Nationale de la Recherche (ANR) under the France 2030 programme (reference number 21-ESRE- 0028, ESR/Equipex+ Onco-Pheno-Screen; program RHU ANR-21-RHUS-0017 IMMUNOLIFE and ANR-23-RHUS-0010 LUCA-pi; ANR-22-CE14-0066 VIVORUSH, ANR-23-CE44-0030 COPPERMAC, ANR-23-R4HC-0006 Ener-LIGHT), a European Research Council Advanced Investigator Award (ERC-2021- ADG, Grant No. 101052444; project acronym: ICD-Cancer); a European Research Council Proof-of-Concept Grant (Grant. No. 101233365), Hevolution Network on Senescence in Aging (reference HF-E Einstein Network); European Union Horizon 2020 research and innovation programmes Oncobiome (grant agreement number: 825410), Prevalung (grant agreement number 101095604),Institut National du Cancer (INCa), Institut Universitaire de France; PAIR-Obésité INCa_18713, Seerave Foundation, SIRIC Cancer Research and Personalized Medicine (CARPEM, SIRIC CARPEM INCa-DGOS-Inserm-ITMO Cancer_18006 supported by Institut National du Cancer, Ministère des Solidarités et de la Santé and INSERM). This study (Immuno-Onco) contributes to the IdEx Université de Paris Cité ANR-18-IDEX-0001. FM and DCG thank the University of Graz (Institute of Molecular Biosciences) for financial support as well as the Austrian Science Fund (FWF) for grant [10.55776/P37278] as well as for further grants (DOC-50, F3012, W1226, P29203, P29262, P27893, and P31727). FM is grateful to the FWF for excellence cluster [10.55776/COE14], which was additionally supported by Land Styria, Stadt Graz and University of Graz. We thank Martin Odabas for support in generating Figure 1, which was created in BioRender. Odabas, M. N. (2026) https://BioRender.com/kxf9zze.
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Polyamine-mediated inhibition of ferroptosis contributes to geroprotection by Madeo et al. is licensed under a Creative Commons Attribution 4.0 International License.
