IgG-like bispecific antibody platforms with built-in purification-facilitating elements

Area of Science:

• Biotechnology
• Protein Engineering
• Immunology

Background:

• Production of IgG-like asymmetric bispecific antibodies (bsAbs) involves complex heavy chain heterodimerization and heavy-light chain pairings.
• Existing strategies for controlling chain association in bsAb production often generate low levels of mispaired byproducts.
• Byproducts from mispairing and discordant chain expression complicate downstream processing, reducing yield and purity.

Purpose of the Study:

• To introduce novel IgG-like bsAb platforms designed to overcome production challenges.
• To highlight platforms that integrate chain pairing control with purification-facilitating elements.
• To improve the efficiency and robustness of recombinant bsAb manufacturing.

Main Methods:

• Review and introduction of eight distinct IgG-like bsAb platforms.
• Analysis of platform designs incorporating both chain pairing control and purification strategies.
• Evaluation of the impact of these integrated designs on bsAb production.

Main Results:

• The reviewed platforms incorporate built-in purification elements alongside chain pairing control mechanisms.
• These integrated designs address both correct chain pairing and efficient purification simultaneously.
• The platforms demonstrate potential for improved efficiency and robustness in bsAb production.

Conclusions:

• Novel IgG-like bsAb platforms offer simultaneous solutions for chain pairing and purification challenges.
• These integrated approaches enhance the overall efficiency and robustness of bsAb manufacturing.
• The development of such platforms is crucial for overcoming downstream processing hurdles in bsAb production.