Fibrin-fibrin and fibrin-matrix protein interfaces

Fibrin-fibrin and fibrin-matrix protein interfaces are the structural foundations of blood clots and the provisional matrix during tissue repair. These interfaces are formed when thrombin cleaves fibrinogen into fibrin monomers, which then polymerize through specific "knob-hole" interactions (Weisel & Litvinov, 2017; PubMed: 28116588). The resulting network is stabilized by Factor XIIIa, which creates covalent cross-links between fibrin strands and anchors matrix proteins like fibronectin and vitronectin to the clot (Mosesson, 2005; PubMed: 16102057). These interactions are critical for hemostasis, providing mechanical strength to the clot and a scaffold for cell migration and angiogenesis (Laurens et al., 2006; PubMed: 16669957). In pathological states, these interfaces contribute to the stability of obstructive thrombi in myocardial infarction and stroke, and their persistence is linked to chronic inflammatory and fibrotic diseases (StatPearls, 2023; NBK537174). Therapeutic targeting of these interfaces involves fibrinolytic agents that dissolve the mesh, anticoagulants that prevent its formation, and surgical sealants that utilize these interactions to promote localized hemostasis (NIH, 2022).

Other names

Fibrin polymerFibrin networkFibrin-fibronectin complexFibrin-matrix interface

Inhibition of thrombin to prevent fibrinogen cleavage and subsequent interface formation; activation of plasmin to degrade existing fibrin interfaces; enzymatic depletion of fibrinogen.