Therapeutic Target of Complement System

Therapeutic Target of Complement System Background

Today it is clear that complement system is a key player of the innate immune system. However, this integral position in the maintenance and regulation of immune and inflammation reactions also makes it a trigger point for a variety of pathologic conditions. Erroneous activation or insufficient regulation of the complement cascade may turn its destructive actions against the host's cells. As a consequence, many inflammatory and autoimmune diseases are thought to be caused, or at least supported, by unleashed complement. Inhibition or modulation of complement system has therefore been recognized as a promising therapeutic target for many years.

However, successful marketing of complement-targeted drugs has proved to be more difficult than initially expected, and many strategies have been discontinued. The US Food and Drug Administration's approval of the first complement-specific drug, an antibody against complement component C5 (eculizumab; Soliris), in March 2007, was a long-awaited breakthrough in the field. Approval of eculizumab validates the complement system as therapeutic target and might facilitate clinical development of other promising drug candidates.

Therapeutic Target of Complement System References

1. Ricklin D, et al. (2007). Complement-targeted therapeutics. Nature biotechnology, 25(11), 1265-1275.
2. Hajishengallis G, et al. (2013). Complement-targeted therapeutics in periodontitis. In Complement Therapeutics (pp. 197-206). Springer US.