A novel multi-parametric high content screening assay in ciPTEC-OAT1 to predict drug-induced nephrotoxicity during...

Area of Science:

• Nephrology
• Toxicology
• Drug Discovery

Background:

• Drug-induced nephrotoxicity poses significant clinical challenges, hindering treatment options and new drug development.
• Current methods often detect nephrotoxicity late in the drug development pipeline, necessitating earlier detection strategies.
• A lack of effective in vitro assays for early nephrotoxicity screening limits proactive risk management.

Purpose of the Study:

• To develop a high-throughput in vitro assay for early identification of drug-induced nephrotoxicity.
• To create a predictive model integrating multi-parametric cell health data and drug exposure levels.
• To enable risk mitigation for nephrotoxicity during the early stages of drug discovery.

Main Methods:

• Development of a high-content screening assay utilizing ciPTEC-OAT1 proximal tubular cells.
• Quantification of cell health parameters using five distinct fluorescent dyes.
• Validation using a set of 62 drugs across clinically relevant concentration ranges.

Main Results:

• The developed assay achieved 75% sensitivity in identifying proximal tubular toxic drugs.
• The assay demonstrated 100% specificity, with no false positives for nephrotoxicity.
• The assay integrates multi-parametric data and drug exposure for robust prediction.

Conclusions:

• The novel assay is suitable for early drug discovery, facilitating identification and mitigation of nephrotoxicity risks.
• Its high-throughput, cost-effective nature makes it compatible with early drug development needs.
• This assay advances the ability to predict and manage drug-induced kidney damage.