Growth Inhibition and Membrane Permeabilization of Candida lusitaniae Using Varied Pulse Shape Electroporation

Area of Science:

• Mycology
• Biophysics
• Medical Microbiology

Background:

• Candida lusitaniae is an opportunistic pathogen that develops antifungal resistance, complicating treatment.
• Similarities between fungal and host eukaryotic cells hinder targeted antifungal therapies.
• Electroporation offers a potential method to enhance antifungal efficacy and cell permeability.

Purpose of the Study:

• To investigate the impact of electric field pulses on Candida lusitaniae growth inhibition.
• To analyze the dynamics of cell membrane permeabilization induced by electroporation.
• To determine the influence of pulse shape, duration, amplitude, and energy on treatment outcomes.

Main Methods:

• Exposure of Candida lusitaniae to various electric field pulse shapes and durations.
• Application of electric fields ranging from 2-8 kV/cm.
• Measurement of growth inhibition rates and observation of membrane permeabilization dynamics.

Main Results:

• A single electroporation pulse at 8 kV/cm achieved up to 51 ± 5% growth inhibition.
• Electroporation pulse shape influences the inhibitory effect.
• Electric field amplitude and pulse energy are critical determinants of treatment success.
• Cell membrane permeabilization dynamics were characterized across different electric field strengths.

Conclusions:

• Electroporation is a promising strategy for inhibiting Candida lusitaniae growth.
• Optimizing electric field parameters (amplitude, energy) is crucial for maximizing electroporation's antifungal effect.
• Further research into electroporation dynamics can inform novel therapeutic approaches against resistant fungal infections.