In vitro feeding assays for hard ticks

Area of Science:

• Veterinary Entomology
• Parasitology
• Molecular Biology

Background:

• Tick-borne pathogens pose significant threats to animal and human health.
• Effective prevention strategies require molecules targeting critical tick and pathogen survival processes.
• Standardized in vitro assays are essential for testing these molecules, but developing them for hard ticks is challenging due to their prolonged feeding requirements.

Purpose of the Study:

• To develop a standardized, automatable in vitro feeding assay for hard ticks.
• To facilitate research on tick physiology, pathogen transmission, and the efficacy of novel control strategies.

Main Methods:

• Development of a novel feeding system for Ixodes ricinus using a blood- and membrane-based approach.
• The membrane mimics the elasticity of skin to simulate natural feeding conditions.
• Adaptation of the system for in vitro feeding of other hard tick species.

Main Results:

• A standard and easily automated in vitro feeding assay for Ixodes ricinus was successfully established.
• The assay system is adaptable to other hard tick species.
• The assay enables various in vitro investigations, including studies on tick endosymbionts, vaccine candidates, drugs, and genomic tools like RNA interference.

Conclusions:

• The developed in vitro feeding assay provides a valuable tool for advancing tick and tick-borne disease research.
• This assay facilitates the screening of potential anti-tick interventions and the study of tick biology.
• The system supports the application of modern molecular techniques in vitro for tick control strategies.