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Lipid homeostasis and regulated cell death
Eran Agmon1, Brent R Stockwell2
1Department of Biological Sciences, Columbia University, 550 West 120th Street, MC 4846, New York, NY 10027, United States.
Current Opinion in Chemical Biology
|June 24, 2017
Summary
Cell membranes dynamically regulate organelle function and cell death through lipid composition. Understanding lipid metabolism, particularly in ferroptosis, is paving the way for novel lipid-based therapies.
Area of Science:
- Cell Biology
- Biochemistry
- Molecular Biology
Background:
- Cell membranes are dynamic structures crucial for cellular function.
- Lipid composition actively influences organelle function and membrane properties.
- Disruptions in lipid homeostasis can lead to regulated cell death (RCD).
Purpose of the Study:
- To review how membrane lipid composition dictates organelle function.
- To explain homeostatic mechanisms regulating membrane physical properties.
- To highlight the role of disrupted lipid homeostasis in RCD, focusing on ferroptosis.
Main Methods:
- Review of current literature on lipidomics, membrane biophysics, and cell death.
- Analysis of mechanisms underlying ferroptosis, a form of RCD.
- Examination of lipid metabolism's role in ferroptosis induction.
- Assessment of current and future lipid-based therapeutic strategies.
Main Results:
- Membrane lipid composition is a key determinant of specific organelle functions.
- Homeostatic mechanisms maintain cellular functions by regulating membrane physical properties.
- Ferroptosis, a lipid peroxidation-driven RCD, is initiated by metabolic shifts increasing lipid susceptibility to oxidation.
- Lipid-based therapies show promise and are an active area of research.
Conclusions:
- Lipidomics provides critical insights into cellular organization and function.
- Understanding lipid homeostasis and its disruption is vital for comprehending cell fate.
- Targeting lipid metabolism offers a promising avenue for developing new therapeutic interventions, particularly for diseases involving ferroptosis.
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