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Monoclonal antibodies locate molecules in cells

Infection and response • Monoclonal antibodies (biology only) (HT only)

Key concepts

What you'll likely be quizzed about

  • Monoclonal antibodies are identical copies of a single antibody, designed to recognize one specific antigen shape.
  • The binding between the antibody and antigen is highly specific, meaning that an antibody directed at a particular target will bind specifically to that molecule even among a mixture of various substances.
  • The binding of a labeled monoclonal antibody to its target allows for the detection and localization of the molecule in cell or tissue samples.

Flashcards

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What causes cross-reactivity of monoclonal antibodies?

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Structural similarity between the target antigen and other molecules can cause antibodies to bind non-targets and produce misleading signals.

Key notes

Important points to keep in mind

Monoclonal antibodies bind a single antigen epitope, providing precise molecular targeting.

Label choice (fluorescent, enzymatic, radioactive) dictates detection method and sensitivity.

Sample preparation modifies antigen shape; fixation and retrieval steps influence antibody binding.

High antibody specificity decreases false positives; validate antibodies with appropriate controls.

Hybridoma technology ensures a continuous, uniform antibody supply with ethical and cost considerations.

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