The regulation of the complement system: insights from genetically-engineered mice

Area of Science:

• Immunology
• Molecular Biology

Background:

• The complement system is a critical part of innate immunity, requiring strict regulation to prevent autoinflammation.
• Fluid-phase and membrane-bound inhibitors are essential for controlling complement activation and protecting host tissues.

Purpose of the Study:

• To review the insights gained from studying genetically engineered animal models with altered complement inhibitor function.
• To discuss the advantages and disadvantages of using these animal models to understand complement biology in vivo.

Main Methods:

• Investigation of genetically engineered animals with targeted deletion or gain-of-function mutations in complement inhibitor genes.
• Review of existing literature and data from studies utilizing these animal models.

Main Results:

• Genetically modified animal studies have underscored the in vivo significance of various complement inhibitors.
• These models have illuminated the complex regulatory network governing complement activation and its impact on self-tissue integrity.

Conclusions:

• Genetically engineered animal models are powerful tools for dissecting the in vivo functions of complement inhibitors.
• Understanding complement regulation through these models is vital for developing therapies for complement-mediated diseases.