Antibody Enrichment
Antibody Enrichment - Related Videos
04:50
Phosphopeptide Enrichment: An Antibody-based Immunoprecipitation Technique to Separate Specific Phosphorylated Peptides from Complex Peptide Mixtures
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2023
In this video, we demonstrate antibody-based immunoprecipitation of phosphopeptides from a peptide mixture. The enriched phosphopeptides are vacuum concentrated and stored for downstream analysis.
12:43
Enrichment and Purging of Human Embryonic Stem Cells by Detection of Cell Surface Antigens Using the Monoclonal Antibodies TG30 and GCTM-2
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Cited by 1 •
2013
We describe the use of the monoclonal antibodies TG30 (CD9) and GCTM-2 for the combined detection of cell surface antigens via fluorescence activated cell sorting (FACS) for the identification and enrichment of live human embryonic stem cells (hESC) using positive selection and also the use of negative selection to purge hESCs from a mixed cell population.
12:55
Scalable High Throughput Selection From Phage-displayed Synthetic Antibody Libraries
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Cited by 33 •
2015
A method is described with visual accompaniment for conducting scalable, high throughput selections from phage-displayed combinatorial synthetic antibody libraries against hundreds of antigens simultaneously. Using this parallel approach, we have isolated antibody fragments that exhibit high affinity and specificity for diverse antigens that are functional in standard immunoassays.
01:34
Environmental Enrichment for Rodents
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2026
All animal procedures described here must be conducted in accordance with institutional animal ethics guidelines and approved by IACUC. All procedures must follow the principles of the 3Rs—Replacement, Reduction, and Refinement—and must be performed by trained personnel. Environmental enrichment involves objects and practices that encourage natural behaviors, improve psychological well-being, and promote better welfare in laboratory rodents. Environmental enrichment should be tailored to the...
01:27
Environmental Enrichment in Rabbits and Pigs
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2026
All animal procedures described here must be conducted in accordance with institutional animal ethics guidelines and approved by IACUC. All procedures must follow the principles of the 3Rs—Replacement, Reduction, and Refinement—and must be performed by trained personnel. Importance of Environmental Enrichment Environmental enrichment is a fundamental component of laboratory animal care and welfare. It provides animals with opportunities to express species-specific behaviors, reduces stress, and...
FAQs
Antigen-based capture selects antibodies that recognize a particular antigen, whereas Fc-based capture uses binding to a ligand that interacts with an antibody’s Fc region. The first approach emphasizes antigen recognition, while the second targets a shared antibody region. This distinction helps researchers choose an enrichment strategy suited to selective antibody recovery or broader antibody capture.
Washing removes proteins and other sample components that do not remain selectively bound, improving the purity of the retained antibody fraction. Elution then disrupts the affinity interaction so the antibodies can be collected. The balance matters because insufficient washing can leave contaminants, while unsuitable elution may reduce recovery or affect the antibody’s usefulness in later experiments.
Purity and recovery depend on the selectivity of the affinity interaction, the composition of the starting biological sample, and how effectively unwanted proteins are removed during washing. Elution also affects the final amount recovered. These variables determine whether the resulting preparation is sufficiently concentrated and clean for sensitive analysis, protein characterization, or other downstream experiments.
By reducing variation in the amount of target antibody and limiting unrelated proteins, enrichment creates a more controlled sample for comparison across experiments. Higher antibody concentration can improve detection sensitivity, while greater purity can reduce interference during analysis. Together, these effects support more reproducible immunoassays, characterization studies, and investigations of antibody properties.
A typical workflow begins with a complex biological sample and an affinity material chosen to interact with the desired antibodies through antigen recognition or Fc-region binding. The sample is exposed to that interaction, unbound components are removed by washing, and the retained antibodies are released by elution. The collected fraction can then be assessed or used in downstream biology experiments.
Enrichment is useful when the target antibodies represent only a portion of a complex biological sample or when unrelated proteins could interfere with analysis. Increasing the target proportion can make detection more sensitive and improve sample suitability for immunoassays, protein characterization, structural studies, and antibody development. Direct analysis may be less informative when sample complexity obscures the antibody signal.
An enriched fraction supports examination of antibody presence, properties, and performance with fewer unrelated sample components. In immunoassays, it can improve detection; in protein characterization and structural studies, greater sample quality can facilitate analysis. During antibody development, enrichment helps provide a more consistent preparation for evaluating antibodies and their interactions with relevant targets.
During antibody development, enrichment supplies preparations with improved concentration and reduced sample complexity, supporting more consistent evaluation. For protein characterization and structural studies, removing unrelated proteins can make the antibody fraction more suitable for analysis. The same affinity-based logic connects these applications, but the desired outcome may differ between evaluating antibody function and examining molecular properties.