High-iron chow blunts doxorubicin cardiotoxicity in mice
- Mice received weekly doxorubicin over several weeks on standard or iron-enriched chow, with cardiac function, histology, mitochondria and iron-handling proteins assessed.
- The iron-rich diet was linked to better survival and heart function and less fibrosis, apoptosis and oxidative stress.
- Doxorubicin hearts showed ferroptosis-related transcriptional signatures and disturbed iron handling (TFR1 and NCOA4 up, FTH1 down), which the diet largely reversed.
💡 Points Based on the abstract
Counterintuitive, since iron overload is a classic driver of anthracycline cardiotoxicity, so the dose and baseline iron status matter enormously. The model is a mouse given Dox without tumour; whether iron changes antitumour efficacy is untested, and that is the safety question oncologists would ask first. For now it is a mechanistic lead on iron handling in the heart, not a protective strategy.