High-content screening for biofilm assays

Area of Science:

• Biotechnology
• Materials Science
• Microbiology

Background:

• Biofilm formation on surfaces poses challenges in various industries.
• Traditional biofilm assays lack throughput and multiplexing capabilities.
• Assessing bacterial adhesion and viability on engineered surfaces requires efficient methods.

Purpose of the Study:

• To develop and validate a novel high-throughput screening platform for biofilm assessment.
• To quantify bacterial adhesion, viability, and removal on engineered surfaces.
• To investigate the impact of surface chemistry and buffer systems on biofilm dynamics.

Main Methods:

• Utilized a high-content screening platform for multiplexed quantification of bacterial adhesion and viability.
• Employed fluorescent dye combinations for simultaneous assessment of cell number and viability.
• Automated platform processed over 10,000 wells daily.
• Investigated biofilm formation on cross-linked polyvinyl alcohol (PVA) coating films in 384-well plates.

Main Results:

• The platform enables rapid, reliable, and quantitative assessment of biofilm formation and removal.
• Bacterial adhesion and viability were influenced by water chemistry, bacterial cell type, and film chemistry.
• Increased cross-linking of PVA films correlated with enhanced reversible and irreversible bacterial adhesion.
• Coating film cross-linking degree and hydrophobicity were identified as key factors in bacterial adhesion.

Conclusions:

• The developed high-throughput platform is a powerful tool for evaluating fouling-resistant coatings.
• The study elucidated fundamental mechanisms governing bacterial adhesion on engineered surfaces.
• Understanding the interplay of surface properties and environmental factors is crucial for controlling biofilm formation.