Antibody suspension bead arrays.

Area of Science:

• Biotechnology
• Proteomics
• Analytical Chemistry

Background:

• Antibody microarrays are valuable tools for protein target screening in complex biological samples.
• Traditional planar arrays can be limiting for high-throughput analysis of body fluids like serum and plasma.

Purpose of the Study:

• To introduce and evaluate a novel antibody array system utilizing color-coded beads in suspension.
• To demonstrate the system's capability for high-throughput screening of proteins in serum and plasma samples.

Main Methods:

• Development of antibody arrays in suspension using color-coded beads.
• Application of directly labeled samples onto arrays with immobilized capture reagents.
• Utilizing whole sample biotinylation to bypass purification steps.

Main Results:

• The suspension bead-based antibody array system facilitates uncomplicated screening of numerous samples.
• Detection limits reach low picomolar and high picogram per milliliter levels.
• The assay exhibits dynamic ranges spanning over three orders of magnitude.
• The workflow supports profiling of 384 clinical samples for up to 100 proteins per assay.

Conclusions:

• The bead-based suspension antibody array is a powerful and efficient tool for high-throughput proteomic profiling.
• This system simplifies sample processing and enhances analytical capacity for clinical sample analysis.