Cell- and biomarker-based assays for predicting nephrotoxicity

Area of Science:

• Nephrology
• Toxicology
• Drug Discovery

Background:

• Drug-induced nephrotoxicity is a major cause of investigational drug failure.
• Current methods lack accuracy in predicting kidney toxicity early in drug development.

Purpose of the Study:

• To review traditional and emerging kidney injury biomarkers for nephrotoxicity determination.
• To evaluate the potential of in vivo biomarkers in high-throughput in vitro screening.
• To compare cell types and novel 3D culture technologies for in vitro nephrotoxicity prediction.

Main Methods:

• Review of existing literature on kidney injury biomarkers.
• Discussion of in vitro screening assays and cell culture technologies.
• Comparison of traditional cell culture with novel 3D and 'kidney-on-a-chip' systems.

Main Results:

• Traditional in vitro assays show poor correlation with in vivo nephrotoxicity results.
• Validated renal biomarkers show potential for early in vivo detection but not yet for in vitro prediction.
• Novel 3D and 'kidney-on-a-chip' technologies offer improved predictive capabilities.

Conclusions:

• There is an urgent need for better in vitro systems to predict drug-induced nephrotoxicity.
• Advanced culture technologies like 'kidney-on-a-chip' and 3D cultures show promise for accurate prediction.
• These novel systems can generate biomarker signatures from relevant kidney cells for improved drug safety assessment.