# Fundamental mechanism of ferroptosis: Three unanswered questions

## TL;DR

This paper highlights three unresolved questions about ferroptosis, a type of cell death linked to cancer and disease, that need answers to better understand and use it therapeutically.

## Contribution

The paper identifies three key unanswered questions about ferroptosis mechanisms, physiology, and interactions with other cell death types.

## Key findings

- The exact mechanism by which lipid peroxides trigger cell death during ferroptosis is unknown.
- The physiological role of ferroptosis across the human life cycle is not fully understood.
- How ferroptosis interacts with other regulated cell death pathways remains unclear.

## Abstract

Ferroptosis, an iron-dependent form of regulated cell death (RCD) driven by lipid peroxidation, has been extensively studied since its conceptualization in 2012 and has been suggested as a therapeutic target in many cancers and degenerative diseases. However, three fundamental questions remain unanswered about ferroptosis. First, the mechanisms by which cells execute death during ferroptosis remain elusive: The key role of lipid peroxides in triggering ferroptosis is established, but how this results in the death of a cell remains unclear. Second, the physiological role of ferroptosis throughout the human life cycle is unclear; currently, there is evidence for ferroptosis in early development, immunity, aging, and tumor suppression, but not in many other aspects of physiology. Third, and finally, the intersection between ferroptosis and other RCD modalities, such as apoptosis, necroptosis, pyroptosis, and autophagic cell death, is necessary for understanding how ferroptosis integrates into networks controlling cellular fate. Addressing these gaps in knowledge is essential for building a comprehensive understanding of this mode of cell death, as well as translating ferroptosis knowledge into effective therapeutics.