ArticleCommunications biology2026
SLC7A11-mediated cystine accumulation and Rac1-WRC-Arp2/3-driven actin cytoskeletal folding synergistically induce disulfidptosis in acute myocardial infarction.
Article in Communications biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Disulfidptosis, a newly identified form of cell death, holds significant biological relevance; however, its role in cardiovascular diseases remains poorly characterized. To investigate this, disulfide bond formation was evaluated using non-reducing Western blot, while cytoskeletal alterations were assessed via phalloidin staining. In vivo experiments using a rat model of myocardial infarction (MI) and in vitro experiments using H9c2 cardiomyocytes subjected to oxygen‑glucose deprivation (OGD) both demonstrated upregulation of SLC7A11, NADPH depletion, and cystine accumulation under OGD or MI conditions. Notably, increased disulfide bonds in actin cytoskeletal proteins were observed, leading to cytoskeletal collapse. Inhibition of SLC7A11 rescued disulfidptosis across all models. Cellular knockdown of Nckap1 (a core component of the Rac1-WRC-Arp2/3 pathway) suppressed disulfidptosis, whereas overexpression of Rac1, Nckap1, or Wave2 promoted it. Spatial transcriptomic analysis of human infarcted myocardium further validated the concurrent upregulation of SLC7A11 and Rac1-WRC-Arp2/3 pathway components. Collectively, these findings indicate that MI induces disulfidptosis-a novel cell death modality mediated by activation of the SLC7A11 and Rac1-WRC-Arp2/3 signaling pathways.
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