Why the study?
Endothelial c-Myc plays a critical role in redox homeostasis, and its deletion may exacerbate oxidative stress, particularly during chemotherapy.
Does doxorubicin treatment alter redox ratios in endothelial c-Myc knockout mice compared to saline?
Does doxorubicin treatment alter redox ratios in endothelial c-Myc knockout mice compared to saline?
Endothelial c-Myc is crucial for maintaining redox balance and protecting against doxorubicin-induced oxidative damage in multiple organs, including the heart.
May indicate endothelial c-Myc protects against doxorubicin oxidative stress in mice; hypothesis-generating for human cardiotoxicity.
SIGNIFICANCE: Endothelial c-Myc plays a critical role in redox homeostasis, with its deletion potentially exacerbating oxidative stress, particularly, during chemotherapy. AIM: To assess the metabolic impact of endothelial c-Myc knockout (KO) and Doxorubicin (DOXO) treatment on kidneys, hearts, and livers using 3D optical cryo-imaging. APPROACH: Redox ratios (NADH/FAD) were analyzed in control (CT) and KO mice treated with DOXO or saline to evaluate mitochondrial function and oxidative states. RESULTS: KO tissues showed significant reductions in redox ratios, indicating an oxidized state, with kidneys exhibiting up to a 51.42% decrease. DOXO treatment further exacerbated oxidative stress in KO tissues, while CT groups demonstrated protective effects. CONCLUSIONS: Endothelial c-Myc is crucial for redox balance and protection against chemotherapy-induced oxidative damage, offering insights for targeted therapeutic strategies.
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Nategh et al. (2025) studied this question.
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