Cell-Matrix Interface and Matrix-Bound Factors

The **cell–matrix interface** encompasses the collective molecular and structural elements at the boundary between a cell and the surrounding **extracellular matrix (ECM)**. It includes cell adhesion molecules (especially the integrin family), cytoskeletal scaffolding proteins, and a diverse range of matrix-bound factors such as growth factors, cytokines, and matrix-bound nanovesicles[1][6]. These complexes coordinate bidirectional communication via biochemical and mechanical signals, influencing processes like cell survival, proliferation, migration, and differentiation[1][3][5][9]. The ECM also acts as a reservoir or modulator for growth factors and signaling molecules (“matrix-bound factors”), which are sequestered or released under specific physiological and pathological conditions[8]. Matrix-bound nanovesicles, embedded in ECM structures, add another regulatory layer by transferring proteins, RNAs, and other bioactive molecules between cells and may serve as disease or tissue repair modulators[6][4]. This "interface" is not a single targetable molecule or receptor, but a dynamic, multipart signaling and structural system[1][5][9].

Other names

Cell–extracellular matrix interfaceECM–cell interfaceMatrix-bound nanovesiclesMatrix-bound factorsMatrix adhesions

Modulation of cell adhesion and migration Regulation of signaling via integrins and growth factors Control of tissue regeneration and repair via ECM-bound signaling molecules