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Related Concept Videos

Hybridoma Technology01:31

Hybridoma Technology

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Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
Hybridoma Selection
Commonly used fusion techniques — electroporation,...
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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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Antibody Screening by Microarray Technology-Direct Identification of Selective High-Affinity Clones.

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  • 1Federal Institute for Materials Research and Testing (BAM), Division 1.5 Protein Analysis, Richard-Willstätter-Strasse 11, 12489 Berlin, Germany.

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Summary

Developing monoclonal antibodies is challenging. This study introduces a new microarray method for hybridoma screening, improving accuracy and efficiency by detecting excellent binders and avoiding false positives.

Keywords:
ELISAHTSantibody qualityantibody validationcompetitive immunoassaysfalse positivesfusionhapten immunoassaysheterology concepthigh-throughput screeninghybridoma technologylinker recognitionmabsmicroarraymonoclonal antibodies

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Area of Science:

  • Biotechnology
  • Immunology
  • Assay Development

Background:

  • Hybridoma technology for monoclonal antibody development involves a time-critical and error-prone primary screening phase.
  • Conventional screening methods are difficult to control, leading to potential errors and making monoclonal antibody generation a risky process.

Purpose of the Study:

  • To develop and validate a novel microarray-based procedure for improved hybridoma cell screening.
  • To enhance the selectivity, throughput, and reproducibility of monoclonal antibody screening.
  • To overcome limitations of conventional methods, such as misleading avidity effects and the need for antibody purification.

Main Methods:

  • A microarray-based procedure was developed for high-throughput screening of hybridoma supernatants.
  • Simultaneous competition experiments were performed on the microarray to assess cross-reactivity.
  • An improved method for oriented antibody immobilization on epoxy-silanized slides was utilized.
  • A model system using known carbamazepine-specific clones and simulated supernatants was employed for validation.

Main Results:

  • The microarray system demonstrated high selectivity for excellent antibody binders, largely independent of immunoglobulin G (IgG) concentration.
  • Reproducible signals were obtained, and misleading avidity effects were avoided.
  • Simultaneous competition assays allowed for the selection of clones with desired cross-reactivity properties.
  • Raw cell culture supernatants, including those with fetal calf serum (FCS), could be used directly without prior IgG enrichment or purification.

Conclusions:

  • The novel microarray-based screening approach offers significant advantages over conventional methods for hybridoma screening.
  • This method improves accuracy, reduces false positives, and streamlines the monoclonal antibody development process.
  • The procedure is more efficient and cost-effective, minimizing lengthy elimination steps for poor clones.