Extracellular matrix–host tissue interface

The extracellular matrix (ECM)–host tissue interface is a complex, dynamic microenvironment where the structural scaffold of a tissue meets and communicates with its cellular components (Frantz et al., 2010, J Cell Sci). This interface is not a single molecule but a functional zone composed of fibrous proteins like collagens, adhesive glycoproteins such as fibronectin and laminin, and cell-surface receptors, primarily integrins, which anchor cells and relay mechanical and chemical signals (Hynes, 2002, Cell). It plays a fundamental role in maintaining tissue homeostasis, directing cell differentiation, and facilitating migration during development and repair (Lu et al., 2012, J Cell Biol). In pathological conditions, the interface is often disrupted; for instance, in cancer, the ECM becomes excessively stiff and remodeled, creating a "pre-metastatic niche" that promotes tumor invasion and chemoresistance (Walker et al., 2018, Int J Mol Sci). While the interface itself is a biological site rather than a discrete therapeutic target, many drugs are designed to modulate its components, such as integrin inhibitors for cardiovascular disease or matrix metalloproteinase (MMP) inhibitors for inflammatory conditions (Humphries et al., 2006, Nat Rev Drug Discov). Understanding the biophysical and biochemical properties of this interface is also paramount in regenerative medicine for developing scaffolds that promote successful host tissue integration and minimize foreign body responses (Anderson et al., 2008, Semin Immunol). Consequently, therapeutic strategies often focus on normalizing the mechanical properties or biochemical signaling of this interface to treat chronic wounds or fibrotic diseases.

Other names

Cell-matrix interfaceECM-cell interfaceTissue-biomaterial interfacePericellular matrix

Modulation of cell-matrix adhesion and proteolytic remodeling of the extracellular environment via inhibition of integrins or matrix metalloproteinases.