Phage display technology for human monoclonal antibodies

Area of Science:

• Biotechnology
• Molecular Biology
• Immunology

Background:

• In vitro technologies have advanced antibody discovery.
• Filamentous phage display is a common method for antibody library generation and selection.
• Antibodies (Abs) are displayed on phage surfaces by fusing variable (V) regions to phage minor coat protein pIII.

Purpose of the Study:

• To describe protocols for antibody library construction, handling, and selection using phage display.
• To highlight the capabilities of phage display for identifying lead candidates with high affinity.

Main Methods:

• Construction of large antibody libraries displayed on filamentous phage.
• Selection of antibodies through cycles of antigen binding.
• Engineering of selected antibody genes for improved characteristics.

Main Results:

• Antibodies with affinities comparable to hybridoma technology can be selected.
• Phage display allows for in-situ cloning and subsequent engineering of antibody genes.
• Engineered antibodies can exhibit enhanced affinity, modulated specificity, or altered effector functions.

Conclusions:

• Phage display is a powerful in vitro technology for antibody discovery and engineering.
• This method facilitates the generation of antibody libraries and rapid selection of desired antibody candidates.
• The technology enables optimization of antibody properties beyond natural immune system capabilities.