Complement Factor H-Based Therapeutics: A Comprehensive Overview

Area of Science:

• Immunology
• Innate immunity
• Complement system biology

Background:

• The complement system is crucial for innate immunity and homeostasis.
• Dysregulation of complement leads to severe pathologies.
• Factor H (FH) is a key regulator of the complement alternative pathway (AP).

Purpose of the Study:

• To review therapeutic developments targeting Factor H (FH) for complement dysregulation.
• To explore strategies for enhancing FH function.
• To evaluate the therapeutic pipeline for FH-based treatments.

Main Methods:

• Review of existing literature on complement therapeutics and Factor H.
• Analysis of different FH-driven therapeutic strategies.
• Evaluation of the current status of these strategies in clinical development.

Main Results:

• FH regulates the complement AP by inhibiting convertases and acting as a cofactor for factor I.
• Enhancing FH function is a promising therapeutic approach for complementopathies.
• FH-based strategies include full-length FH replenishment and engineered FH fragments, antibodies, and peptides.

Conclusions:

• FH-based therapeutics offer a promising avenue for treating complement-mediated diseases.
• Multiple strategies are under development, including protein engineering and modulating moieties.
• Further evaluation of these strategies in the therapeutic pipeline is ongoing.