Chronotoxici-Plate Containing Droplet-Engineered Rhythmic Liver Organoids for Drug Toxicity Evaluation

Area of Science:

• Chronobiology
• Drug Development
• Organoid Technology

Background:

• Circadian clock dysregulation is linked to human diseases.
• Existing drug administration strategies lack multi-timepoint optimization.
• Rhythmic gene targeting by essential drugs necessitates advanced assessment tools.

Purpose of the Study:

• To develop an in vitro high-throughput tool for chronotherapy assessment.
• To evaluate time-dependent drug toxicity using rhythmic organoids.
• To provide tools for precision chronotherapy and chronotoxicity evaluation.

Main Methods:

• Generation of droplet-engineered primary liver organoids (DPLOs) with rhythmic characteristics.
• Development of the Chronotoxici-plate for automated, high-throughput rhythmic drug assessment.
• Identification of Cryptochrome 1 (Cry1) as a marker for DPLO rhythmicity.

Main Results:

• DPLOs exhibit rhythmic characteristics within 4 days.
• The Chronotoxici-plate enables chronotherapy assessment within 7 days.
• Time-dependent variations in oxaliplatin toxicity were observed, emphasizing administration timing.

Conclusions:

• The Chronotoxici-plate is a valuable tool for in vitro chronotherapy and chronotoxicity assessment.
• Cry1 serves as a reliable marker for assessing organoid rhythmicity.
• Optimizing drug administration timing through chronobiology is crucial for drug development and precision medicine.