GSH as an A‐A Type Allosteric Activator of PKM2: Modulating Cancer Cell Homeostasis and Ferroptosis Susceptibility
This study identifies glutathione (GSH) as an endogenous A-A type allosteric activator of pyruvate kinase M2 (PKM2), stabilizing it in its active tetrameric form through binding at the A-A interface. This PKM2-GSH interaction links GSH metabolism to ferroptosis regulation. Transcriptomic analyses across cancers demonstrate strong correlations between GSH, SLC7A11, PKM2, glycolysis, and ferroptosis pathways. By depleting GSH and activating PKM2, ferroptosis is enhanced in PKM2-dependent cancer models. This approach leads to significant changes in central carbon and lipid metabolism, disrupts mitochondrial function, and drives ferroptotic cell death. The combined treatment markedly suppresses tumor growth in a xenograft model. Elevated PKM2 and SLC7A11 expression levels correlate with poorer survival outcomes, indicating their potential as biomarkers for ferroptosis-based therapy. The findings demonstrate a dual role for GSH in cellular homeostasis and identify the PKM2-GSH-SLC7A11 axis as a therapeutic target for aggressive cancers.
Authors
- Muh‐Hwa Yang
- Tsan‐Jan Chen (ORCID: https://orcid.org/0000-0002-9180-616X)
- Yi‐Cheng Huang (ORCID: https://orcid.org/0000-0002-4076-1360)
- P H Chen (ORCID: https://orcid.org/0009-0009-4417-1999)
- Wen‐Ching Wang (ORCID: https://orcid.org/0000-0002-7422-3667)
- Chun‐Yu Lin (ORCID: https://orcid.org/0000-0001-5640-4969)
- Wei Yang Sit (ORCID: https://orcid.org/0000-0002-9335-9172)
- Tokuko Haraguchi (ORCID: https://orcid.org/0000-0002-3813-6785)
- Yasushi Hiraoka (ORCID: https://orcid.org/0000-0001-9407-8228)
- W.F. Fang (ORCID: https://orcid.org/0000-0003-0498-4257)
- Meng-Chen Wu (ORCID: https://orcid.org/0000-0003-2303-0563)
- Yu‐Lun Chen (ORCID: https://orcid.org/0000-0002-0740-1347)
- Hsin‐Yu Hsu
- S D Yang (ORCID: https://orcid.org/0000-0003-0197-2621)
- Chien‐Hung Lu
- Chi‐Jen Lo
- Mei‐Ling Cheng
- Hsing‐Jien Kung
Institutions
- National Yang Ming Chiao Tung University (TW)
- Kaohsiung Medical University (TW)
- Toyo University (JP)
- Chang Gung University (TW)
- National Tsing Hua University (TW)
- Chang Gung Memorial Hospital (TW)
- Ube Frontier University (JP)
- Taoyuan Chang Gung Memorial Hospital (TW)
- Osaka Prefectural Toyonaka Support School (JP)
- Taipei Medical University (TW)
- University of California, Davis (US)
- The University of Osaka (JP)
Publication Details
- Journal
- Advanced Science
- Published
- 2025-11-10
- DOI
- https://doi.org/10.1002/advs.202519368
- Primary Topic
- Ferroptosis and cancer prognosis
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Applied Research Laboratories
- Academia Sinica
- National Health Research Institutes
- National Tsing Hua University
- National Synchrotron Radiation Research Center
- National Science and Technology Council