Application of lectin microarray to bacteria including Lactobacillus casei/paracasei strains

Area of Science:

• Microbiology
• Glycobiology
• Biotechnology

Background:

• Lectin microarray technology has been a powerful tool for glycan analysis since 2005.
• Bacterial cell surfaces possess diverse glycosylation patterns crucial for pathogenicity and host interaction.
• Current methods for analyzing bacterial glycosylation are limited.

Purpose of the Study:

• To develop a simple, sensitive, and rapid method for direct analysis of intact bacterial cell surface glycomes using lectin microarray technology.
• To profile and differentiate various bacterial strains based on their surface glycosylation.

Main Methods:

• Bacterial cells were labeled with SYTOX Orange and incubated with a lectin microarray.
• Bound cells were detected in a liquid phase using an evanescent-field fluorescence scanner.
• The entire procedure, from labeling to profiling, was completed within 3 hours.

Main Results:

• The developed method successfully analyzed the cell surface glycomes of 16 different strains of L. casei/paracasei.
• Unique lectin binding profiles were observed for most of the analyzed strains.
• The technique demonstrated high sensitivity and specificity for bacterial glycan profiling.

Conclusions:

• This lectin microarray-based method provides a novel strategy for rapid bacterial profiling.
• The technique enables differentiation of bacterial strains based on their surface glycosylation patterns.
• This approach has relevance for understanding the biological functions of bacterial surface glycosylation.