Regulated necrosis role in inflammation and repair in acute kidney injury

Area of Science:

• Nephrology
• Cellular Biology
• Immunology

Background:

• Acute kidney injury (AKI) often complicates chronic kidney disease (CKD), potentially causing or worsening it.
• Current AKI treatments are limited, focusing on kidney function replacement during recovery.
• Preventing the transition from AKI to CKD remains a significant clinical challenge.

Purpose of the Study:

• To review the role of regulated necrosis pathways in AKI and the AKI-to-CKD transition.
• To highlight the specific types of regulated necrosis involved, such as necroptosis, ferroptosis, and pyroptosis.
• To explore the potential for therapeutic strategies targeting these pathways.

Main Methods:

• Review of existing literature on regulated necrosis in kidney injury.
• Analysis of a murine nephrotoxic AKI model demonstrating sequential ferroptosis and necroptosis waves.
• Examination of the role of inflammatory cytokines like TWEAK in amplifying kidney damage.

Main Results:

• Regulated necrosis, including ferroptosis and necroptosis, is implicated in both AKI and the progression to CKD.
• A sequential wave model of injury was observed, with ferroptosis preceding necroptosis, exacerbated by inflammatory cytokines.
• This process can lead to persistent kidney injury and reduced kidney function.

Conclusions:

• Understanding the specific molecular mechanisms and timing of regulated necrosis is crucial for developing novel AKI therapies.
• Targeting regulated necrosis pathways offers a potential strategy to prevent or treat AKI and mitigate the AKI-to-CKD transition.
• Further research into these pathways could improve patient outcomes and survival rates.