Serum and extracellular matrix components

Serum and extracellular matrix components represent a diverse assembly of proteins and macromolecules that constitute the host's systemic and local environment. This category encompasses major plasma proteins such as albumin and fibrinogen, as well as structural constituents of the extracellular matrix (ECM) like collagen, laminin, and fibronectin. These molecules are essential for maintaining tissue architecture, mediating cell signaling, and regulating physiological processes such as hemostasis and the immune response. In clinical pharmacology, these components are primarily studied for their role in plasma protein binding, which dictates the distribution and bioavailability of most systemic drugs. Additionally, many pathogens exploit these host molecules as anchors for adhesion and invasion, utilizing specialized surface proteins to facilitate colonization. While not a single molecular target, this group is a fundamental consideration in pharmacokinetic modeling and the development of anti-infective and anti-fibrotic therapies.

Other names

Host serum proteinsExtracellular matrix proteinsPlasma proteinsAdhesion ligandsECM components

Binding to host proteins to modulate physiological processes such as fibrinolysis and coagulation, or serving as substrates for bacterial proteases and anchors for microbial adhesion.