The Inflammatory Cell Death in Diabetic Kidney Disease: Integrating Multifactorial Mechanisms into Novel Therapeutics

Area of Science:

• Nephrology
• Immunology
• Cell Biology

Background:

• Diabetic kidney disease (DKD) pathogenesis involves multiple inflammatory cell death pathways beyond apoptosis.
• These pathways, including pyroptosis, necroptosis, ferroptosis, NETosis, and PANoptosis, are critical drivers of DKD.
• Key molecular mediators orchestrate renal cell death, inflammation, and fibrosis in DKD.

Purpose of the Study:

• To review the role of inflammatory cell death modalities in diabetic kidney disease (DKD).
• To summarize the molecular mediators driving renal cell death and subsequent pathology in DKD.
• To discuss therapeutic strategies and future research directions for DKD targeting cell death pathways.

Main Methods:

• Literature review synthesizing evidence on inflammatory cell death in DKD.
• Analysis of molecular mediators (e.g., NLRP3 inflammasome, RIPK1/RIPK3/MLKL axis, GSDMD) involved in renal cell death.
• Evaluation of preclinical studies on therapeutic interventions targeting these pathways.

Main Results:

• Inflammatory cell death pathways are central to DKD pathogenesis, affecting podocytes, tubular cells, mesangial cells, and endothelium.
• Targeting mediators like the NLRP3 inflammasome and RIPK1/RIPK3/MLKL axis shows therapeutic potential in preclinical models.
• Challenges include cell-type specificity, pathway redundancy, and translational applicability.

Conclusions:

• Inflammatory cell death is a cornerstone of DKD pathology, driving inflammation and fibrosis.
• Targeting these pathways offers therapeutic potential, necessitating solutions for specificity and translation.
• Future research should focus on biomarkers, targeted delivery, and combination therapies for innovative DKD treatment.