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Affinity chromatography is a powerful technique extensively utilized for separating and purifying specific biomolecules from complex mixtures. It capitalizes on the highly selective binding between an analyte and its counterpart, such as antibody-antigen interactions. The counterpart is immobilized on the stationary phase, forming an affinity column. The stationary phase typically consists of solid support, such as agarose or porous glass beads, immobilizing the affinity ligand. The mobile...
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Biomimetic Materials to Characterize Bacteria-host Interactions
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Glycan-specific whole cell affinity chromatography: A versatile microbial adhesion platform.

Maxwell L Van Tassell1, Neil P J Price2, Michael J Miller1

  • 1Department of Food Science and Human Nutrition, University of Illinois, Urbana, IL 61801, USA.

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|July 8, 2015
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Summary

This study introduces a novel affinity chromatography resin for studying how microorganisms adhere to carbohydrates (glycans). This adaptable tool enables the identification and analysis of uncharacterized microbes and their specific interactions.

Keywords:
Affinity chromatographyBacterial adhesionCampylobacter jejuniCarbohydrate modificationEscherichia coliLectinsScreening

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Area of Science:

  • Microbiology
  • Biochemistry
  • Carbohydrate Chemistry

Background:

  • Investigating microbial adhesion to glycans is crucial for understanding host-microbe interactions.
  • Existing methods for studying these interactions often have limitations, including requirements for pure cultures, labeling, or expensive equipment.
  • There is a need for a versatile platform to study glycan-mediated adhesion in uncharacterized microorganisms.

Purpose of the Study:

  • To develop a universal platform for elucidating and exploiting glycan-mediated adhesion specificity in potentially uncharacterized microorganisms.
  • To overcome the limitations of existing techniques for studying microbial-carbohydrate interactions.

Main Methods:

  • Adaptation of an affinity chromatography resin for studying microbial-glycan interactions.
  • Construction of a tool that promotes whole-cell interactions with viable, unaltered cells.
  • Presentation of target glycans with controlled stereospecificity for robust spatial interactions.

Main Results:

  • The developed affinity chromatography resin allows for quantification, selection, and manipulation of target organisms based on glycan ligand interactions.
  • The tool utilizes any reducing glycan and is quick, efficient, safe, affordable, scalable, and reusable.
  • It provides high affinity/avidity interactions reflecting in vivo matrices.

Conclusions:

  • The adapted affinity chromatography resin serves as a powerful and versatile model for studying glycan-mediated adhesion.
  • This platform overcomes previous technical limitations, enabling broader investigation of microbial interactions with carbohydrates.
  • It offers a scalable and cost-effective method for identifying and characterizing microbial adhesion mechanisms.