Projects per year
Abstract
Caveolae have been linked to many biological functions, but their precise roles are unclear. Using quantitative whole-cell proteomics of genome-edited cells, we show that the oxidative stress response is the major pathway dysregulated in cells lacking the key caveola structural protein, CAVIN1. CAVIN1 deletion compromised sensitivity to oxidative stress in cultured cells and in animals. Wound-induced accumulation of reactive oxygen species and apoptosis were suppressed in Cavin1-null zebrafish, negatively affecting regeneration. Oxidative stress triggered lipid peroxidation and induced caveolar disassembly. The resulting release of CAVIN1 from caveolae allowed direct interaction between CAVIN1 and NRF2, a key regulator of the antioxidant response, facilitating NRF2 degradation. CAVIN1-null cells with impaired negative regulation of NRF2 showed resistance to lipid-peroxidation-induced ferroptosis. Thus, caveolae, via lipid peroxidation and CAVIN1 release, maintain cellular susceptibility to oxidative-stress-induced cell death, demonstrating a crucial role for this organelle in cellular homeostasis and wound response.
| Original language | English |
|---|---|
| Pages (from-to) | 376-397.e1-4 |
| Number of pages | 27 |
| Journal | Developmental Cell |
| Volume | 58 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 13 Mar 2023 |
Keywords
- caveolae
- CAVIN1
- cell death
- ferroptosis
- lipid peroxidation
- NRF2
- oxidative stress
Projects
- 4 Finished
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Translating membrane proteins into therapeutics; from bedside to bench
Sexton, P. (Primary Chief Investigator (PCI)), Christopoulos, A. (Chief Investigator (CI)), Pantelis, C. (Chief Investigator (CI)) & Parton, R. G. (Chief Investigator (CI))
1/01/19 → 31/12/23
Project: Research
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Systems approaches to understanding the assembly of mitochondrial machines
Stroud, D. (Primary Chief Investigator (PCI)) & Ryan, M. (Chief Investigator (CI))
1/01/18 → 31/12/20
Project: Research
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Systems approaches to understanding mitochondrial function and dysfunction in disease
Stroud, D. (Primary Chief Investigator (PCI))
1/01/18 → 31/12/21
Project: Research
Equipment
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FlowCore (FLOW)
Fryga, A. (Manager)
Faculty of Medicine Nursing and Health Sciences Research PlatformsFacility/equipment: Facility
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Monash Proteomics & Metabolomics Platform (MPMP)
Schittenhelm, R. (Other) & Steer, D. (Manager)
Faculty of Medicine Nursing and Health Sciences Research PlatformsFacility/equipment: Facility