Immunoaffinity Capture
Immunoaffinity Capture - Related Videos
06:09
Quantification of Proteins Using Peptide Immunoaffinity Enrichment Coupled with Mass Spectrometry
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Cited by 37 •
2011
Stable Isotope Standards and Capture by Anti-Peptide Antibodies (SISCAPA) couples affinity enrichment of peptides with stable isotope dilution mass spectrometry (MRM-MS) to provide quantitative measurement of peptides as surrogates for their respective proteins. Here we describe the protocol using magnetic particles in a partially automated format.
02:14
Prey Capture Assay: A Method to Study the Prey Capture Behavior of Zebrafish Larva
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2023
This video describes the prey capture assay. The video discusses the method to study prey capture behavior of zebrafish larvae after the laser ablation of specific neurons.
11:29
Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents
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Cited by 52 •
2015
This video article describes experimental procedures to study long-term plasticity and its associative processes such as synaptic tagging, capture and cross-tagging in the CA1 pyramidal neurons using acute hippocampal slices from rodents.
29:02
Cell Capture Using a Microfluidic Device
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Cited by 1 •
2007
16:34
Laser Capture Microdissection of Mammalian Tissue
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Cited by 25 •
2007
Laser capture microscopy, also known as laser microdissection (LMD), enables the user to isolate small numbers of cells or tissues from frozen or ...
FAQs
Selectivity arises because the immobilized antibody preferentially recognizes its matching antigen within a complex biological sample. This interaction allows the target molecule to be retained while many unrelated sample components remain unbound and are removed during washing. The resulting enrichment can improve the quality and interpretability of subsequent biological or analytical measurements.
The support matrix provides a surface that holds the antibody in place while the sample contacts it. Washing removes components that did not bind to the antibody, reducing background from the original sample. Elution then releases the captured target, producing material that can be collected for purification, detection, or further biological analysis.
High specificity helps concentrate a selected molecule from a mixture containing many other biological components. This is particularly valuable for low-abundance targets, because reducing unrelated material can make the target easier to analyze. The enriched fraction may support more sensitive biomarker measurements or improve the performance of downstream assays.
The defining advantage is molecular selectivity rather than simple recovery of many sample components. By relying on antibody-antigen binding, the method can enrich a particular target while reducing unrelated material from a complex biological mixture. This focused isolation improves sample quality and is useful when downstream analysis requires greater specificity.
A typical workflow immobilizes antibodies on a support matrix, introduces the biological sample, allows the target antigen to bind, washes away unbound components, and elutes the retained material. The recovered fraction can then proceed to protein purification, biomarker analysis, an immunoassay, mass spectrometry, or a functional study, depending on the experimental objective.
It is useful when purification requires selective recovery of a particular protein from a complex biological sample. Antibody-based retention can reduce unrelated proteins before the target is collected, producing a more focused preparation. That enriched material may be suitable for downstream characterization or functional studies where sample composition affects interpretation.
Immunoaffinity capture can enrich selected biomarkers before measurement, helping isolate low-abundance molecules from complex biological material. In diagnostic workflows, this targeted preparation can improve sample quality for sensitive analysis. The captured fraction may then be examined with immunoassays or other analytical methods to support detection and characterization of biologically relevant molecules.
Recovered material can support several types of follow-up work, including mass spectrometry, immunoassays, and functional studies. Mass spectrometry can provide analytical characterization, immunoassays can examine selected molecular signals, and functional studies can evaluate biological activity. The method therefore links selective sample preparation with both measurement-focused and biology-focused experiments.