Shell-core imprinted polyacrylamide crosslinked chitosan for albumin removal from plasma

Area of Science:

• Biomaterials Science
• Proteomics
• Biotechnology

Background:

• Human plasma contains abundant albumin, hindering the detection of low-abundance disease biomarkers.
• Current proteomic technologies face limitations due to the high concentration of albumin (>60%) in plasma.
• Identifying less abundant proteins is crucial for diagnosing and monitoring diseases.

Purpose of the Study:

• To develop molecularly imprinted polymeric beads for targeted albumin removal from human plasma.
• To assess the efficacy of these beads in enhancing proteomic analysis.
• To create a cost-effective method for biomarker discovery.

Main Methods:

• Preparation of molecularly imprinted polymeric beads using albumin as the template molecule, acrylamide as the functional monomer, and epichlorhydrin-crosslinked chitosan beads as the matrix.
• Testing the recognition and binding capabilities of the imprinted beads with human plasma.
• Quantifying the adsorption capacity for both pure human serum albumin and albumin in plasma.

Main Results:

• The developed beads demonstrated effective recognition and binding of albumin.
• Adsorption capacities were high, reaching 92% for pure human serum albumin and 80% for plasma albumin.
• The preparation protocol is straightforward, and the beads exhibit good protein recognition properties.

Conclusions:

• Molecularly imprinted polymeric beads offer a promising approach for targeted albumin removal from human plasma.
• These beads can facilitate the discovery and detection of low-abundance protein biomarkers.
• The developed material is attractive for biotechnological applications in diagnostics and proteomics.