Chondrocyte cell-matrix interface

The chondrocyte cell-matrix interface is a specialized biological region that facilitates the interaction between chondrocytes and the surrounding extracellular matrix (ECM), primarily through the pericellular matrix (PCM) (MDPI, 2021). This interface is critical for mechanotransduction, allowing chondrocytes to sense mechanical loads and respond by regulating the synthesis and degradation of matrix components like collagen type II and aggrecan (NIH, 2021). Key molecular components of this interface include various receptors such as integrins (notably alpha-10 beta-1 and alpha-5 beta-1), CD44 (the hyaluronan receptor), and annexin V (anchorin CII) (Frontiers, 2015). In diseases such as osteoarthritis, the disruption of this interface leads to altered cellular signaling, chondrocyte hypertrophy, and the upregulation of catabolic enzymes like matrix metalloproteinases (MMPs) (NIH, 2021). Therapeutic strategies targeting this interface aim to stabilize the PCM, modulate mechanotransduction pathways, and promote cartilage repair (ResearchGate, 2023). Drugs like hyaluronic acid and growth factors such as sprifermin interact with components of this interface to maintain joint health and slow disease progression (Frontiers, 2021).

Other names

Chondrocyte-extracellular matrix interfaceChondrocyte-ECM interfacePericellular matrix interfaceChondron interfaceChondrocyte-matrix interaction site

Modulation of mechanotransduction and signaling pathways at the cell-matrix boundary to promote anabolic activity and inhibit catabolic degradation of the cartilage matrix.