Multifunctional robotic micromanipulation system for automated cardiovascular disease therapy using zebrafish

Area of Science:

• Robotics
• Zebrafish research
• Cardiovascular studies

Background:

• Automated micromanipulation is crucial for high-throughput biological research.
• Zebrafish larvae are valuable models for developmental and cardiovascular studies.
• Accurate cardiac monitoring and microinjection in zebrafish larvae present technical challenges.

Purpose of the Study:

• To develop a multifunctional robotic micromanipulation system for automated microinjection and cardiac rhythm monitoring in zebrafish larvae.
• To introduce an indirect localization method and a visual algorithm for precise zebrafish heart component identification.
• To enable novel investigations into the effects of pharmacological agents on zebrafish cardiovascular activity.

Main Methods:

• Development of a robotic micromanipulation system.
• Implementation of an indirect heart localization method for zebrafish larvae.
• Design of a visual algorithm utilizing modulo operation for atrium and ventricle identification.
• Application of the system for yolk microinjection and cardiac rhythm monitoring throughout zebrafish development.
• Utilizing the system to study Tricaine (MS222) and Aspirin effects on zebrafish cardiovascular systems.

Main Results:

• Successful automated microinjection of zebrafish larval yolk.
• Accurate cardiac rhythm monitoring across entire developmental stages.
• Demonstrated efficacy in investigating drug effects (Tricaine, Aspirin) on zebrafish cardiovascular activity.
• Achieved over 60% reduction in drug dosage for heart disease treatment compared to traditional methods.
• Experimental validation of the system's functionality and accuracy.

Conclusions:

• The developed robotic micromanipulation system enables precise and automated microinjection and cardiac monitoring in zebrafish larvae.
• The system facilitates novel research into drug effects on cardiovascular activity and developmental biology.
• This technology significantly reduces manual labor for complex and repetitive tasks in zebrafish research.
• The findings suggest broader applications in high-throughput screening and drug discovery using zebrafish models.