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Low Molecular Weight Protein Enrichment on Mesoporous Silica Thin Films for Biomarker Discovery

Low Molecular Weight Protein Enrichment on Mesoporous Silica Thin Films for Biomarker Discovery

Published on: April 17, 2012

Optimized superficially porous particles for protein separations.

Stephanie A Schuster¹, Brian M Wagner, Barry E Boyes

¹Advanced Materials Technology, Inc., 3521 Silverside Road, Suite 1-K, Quillen Building, Wilmington, DE 19810, USA.

Journal of Chromatography. A

|October 8, 2013

Summary

New superficially porous particles with 400 Å pores enable high-efficiency, low-pressure protein separations. These Fused-Core particles offer improved protein analysis for drug discovery and quality control.

Keywords:

Core–shell particles Fused-core particles Monoclonal antibodies Pore size Protein separations Superficially porous particles

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Area of Science:

Analytical Chemistry
Biochemistry
Pharmaceutical Science

Background:

Growing demand for analyzing large therapeutic molecules in pharmaceuticals and biotechnology.
Need for advanced analytical tools for protein discovery and quality control.

Purpose of the Study:

To introduce and evaluate novel 400 Å Fused-Core particles for large molecule separations.
To assess the performance of these particles for protein analysis, including monoclonal antibodies.

Main Methods:

Development of superficially porous particles with larger pores (400 Å) and optimized shell thickness.
Utilizing 3.4 μm particle size for high-efficiency, low-pressure separations.
Incorporating specific bonded-phase properties for enhanced protein separation.

Main Results:

Demonstrated unrestricted access for molecules <500 kDa to the bonded phase.
Achieved fast and high-resolution separations of protein mixtures and monoclonal antibody variants.
Showcased excellent stability and mass spectrometry compatibility of the new columns.
Investigated protein recovery, sample loading, and dynamic range.

Conclusions:

The new 400 Å Fused-Core particles provide superior performance for protein separations compared to traditional particles.
These particles are well-suited for sensitive protein analysis, drug discovery, and quality control applications.
Optimized particle design and bonded phases enhance separation efficiency, stability, and MS compatibility.