Human antibody arrays are multiplex protein profiling tools used to investigate the relative abundance of multiple human proteins in biological samples. These protein microarrays consist of capture antibodies immobilized at defined positions on functionalized glass slides. Following sample incubation, target proteins are detected using the array’s compatible immunoassay chemistry. Fluorescence-based formats are commonly read with a microarray scanner, and signal intensities are analyzed to compare relative protein abundance between samples or experimental conditions.
Key Features
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Multiplex protein detection: Simultaneous detection of multiple human protein targets on a single glass slide.
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Semi-quantitative analysis: Comparison of normalized signal intensities to assess relative differences in protein abundance.
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Glass-slide format: Enables spatially organized antibody immobilization and supports high-density multiplex profiling.
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Fluorescence-based detection: Compatible fluorescence formats enable signal acquisition using an appropriate microarray scanner.
Usual Applications
Human semi-quantitative antibody arrays are used in exploratory proteomics to investigate cytokine and growth factor profiles, inflammatory responses, cell signaling, cancer biology and candidate protein biomarkers. They support comparative analysis of biological samples to identify proteins associated with experimental conditions or biological processes. Candidate findings can subsequently be investigated using targeted methods such as ELISA or immunoblotting. Data interpretation should account for antibody specificity, background signal, normalization, assay conditions and experimental reproducibility.
