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Green Mountain Antibodies

Green Mountain Antibodies

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ELISA Assay Development

You are here: Home / Antibody Services / ELISA Assay Development

The most commonly employed screening method at Green Mountain Antibodies involves ELISA assay development. ELISA assays are most commonly used for:
-determining mouse or rat serum antibody concentrations
-detecting and measuring antigens in a variety of tissues and samples
-identifying hybridomas producing antigen-specific antibodies
-measuring idiotype-anti-idiotype interactions

ELISA assay development requires selection of a format, developing the best antibodies or critical reagents for that format, and optimizing how the components work together. The screening protocol can then be shared with the customer.

GMAb provides antibodies and working assays for diagnostic use, PD, PK and ADA assays. These critical reagents and assays support our therapeutic customers through pre-clinical and clinical trials.

As a monoclonal antibody and assay development service provider, Green Mountain Antibodies’ goal is to support our customers by developing the best antibodies for their end application. This means our scientists will develop appropriate screening strategies and a Project Plan based on information obtained about the target, available reagents, and how the antibodies will be used in the final assay format. Most often, an ELISA (enzyme-linked immunosorbent assay) assay is used to detect and/or quantify specific proteins will be the end goal.

ELISA Assay Development/Screening Graph

Types of ELISA Assay Development employed:

  • Indirect ELISA: A standard ELISA method used for screening test bleeds and hybridoma cell lines. Antigen is immobilized onto 96-well plates. Antibody-antigen binding is detected using a secondary antibody conjugated to an enzyme and a chromogenic substrate.
  • Capture ELISA: A secondary antibody (for example, goat anti-mouse) is used to capture murine antibodies on a 96 well plate. Avidin-peroxidase and a chromogenic substrate detect bound biotin-labeled antigen.
  • Matched Pair Sandwich ELISA: The antigen is sandwiched between two primary antibodies, known as the capture and detector antibodies. A labeled secondary antibody is then detected by the antigen. We can also use Octet to test matched pairs.
  • Competitive ELISA: Using a labeled protein antigen, single monoclonal antibodies are absorbed onto plastic wells. These monoclonal antibodies will bind biotin-labeled protein antigen. Avidin-peroxidase are used to determine Antigen-antibody complexes. Inhibition of biotin-protein by unlabeled protein forms the basis for a standard curve for protein quantification.
  • Solution-phase immunoassays: Antigen-antibody interactions can be measured in solution, which is useful for quantifying soluble protein antigens. Directly measure free antibody in antigen-antibody mixtures.

Additional ways that Green Mountain Antibodies is able to characterize your final antibody include: affinity ranking by Octet, variable region DNA sequencing, IEF, SDS-PAGE, SEC, and dynamic light scattering.

For more information, and pricing for assay development, please contact us.

Additional Services

  • Octet Analysis
  • Antibody Sequencing
  • Large Scale Antibody Production and Purification

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Green Mountain Antibodies

Burlington, VT 05402

802-865-6230
info@greenmoab.com
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