Engineering Bispecific Peptides for Precision Immunotherapy and Beyond

Area of Science:

• Biochemistry
• Immunology
• Drug Discovery

Background:

• Bispecific peptides are an emerging therapeutic platform in immunotherapy.
• They offer simultaneous engagement of two distinct molecular targets for enhanced specificity and immune modulation.
• Their compact structure allows targeting of difficult protein-protein interfaces and shallow binding sites.

Purpose of the Study:

• To summarize current design strategies for bispecific peptides.
• To elucidate their mechanisms in bridging tumor cells with immune effector cells and blocking immune checkpoint pathways.
• To discuss their potential applications and translational challenges.

Main Methods:

• Review of current literature on bispecific peptide design strategies.
• Analysis of mechanisms involving tumor cell engagement and immune checkpoint blockade.
• Discussion of translational challenges and emerging peptide engineering solutions.

Main Results:

• Bispecific peptides can be designed as fused, linked, or self-assembled architectures.
• They effectively bridge tumor cells with immune effector cells and block immune checkpoints.
• Potential applications extend to oncology, autoimmune, and infectious diseases.

Conclusions:

• Bispecific peptides represent a versatile platform for precision immunotherapy.
• Emerging engineering and computational strategies aim to overcome challenges like stability and delivery.
• This adaptable platform holds promise for advancing treatment options in immune-mediated diseases.