Endothelial cell extracellular matrix proteins (EC-ECM) (EC-ECM)

The endothelial cell extracellular matrix (EC-ECM) is a complex, dynamic network of macromolecules secreted by endothelial cells to provide structural support and biochemical signaling [1]. It primarily consists of the basement membrane, containing collagen type IV, laminins, and heparan sulfate proteoglycans, and the interstitial matrix [2]. Beyond its role as a physical scaffold, the EC-ECM regulates critical vascular processes such as cell adhesion, migration, proliferation, and survival by interacting with cell-surface receptors like integrins [3]. In pathological states, the EC-ECM undergoes significant remodeling, contributing to tumor angiogenesis, atherosclerosis, and fibrotic diseases [4]. Therapeutic strategies often focus on specific components, such as oncofetal fibronectin variants or collagen-binding domains, to deliver drugs or inhibit pathological vessel growth [5]. For example, the L19 antibody targets the extra domain B of fibronectin, which is specifically expressed during neo-angiogenesis in tumors [6]. Additionally, fragments of ECM proteins like endostatin have been developed as anti-angiogenic therapies due to their ability to inhibit endothelial cell proliferation [7]. Understanding the composition and mechanical properties of the EC-ECM is essential for developing targeted therapies for cardiovascular and oncological conditions [8]. However, the ubiquity of ECM components in healthy tissues presents a significant challenge for achieving therapeutic selectivity and minimizing systemic toxicity [9]. Citations: [1] Slevin M, et al. (2009). J. Anat. [2] Yurchenco PD. (2011). Cold Spring Harb. Perspect. Biol. [3] Hynes RO. (2009). Science. [4] Lu P, et al. (2011). J. Cell Biol. [5] Neri D, Bicknell R. (2005). Nat. Rev. Cancer. [6] Schliemann C, Neri D. (2007). Drugs. [7] O'Reilly MS, et al. (1997). Cell. [8] Jarvelainen H, et al. (2009). Arterioscler. Thromb. Vasc. Biol. [9] Gkretsi V, Stylianopoulos T. (2018). Front. Oncol.

Other names

Vascular extracellular matrixEndothelial basement membraneVascular ECM

Inhibition of cell-matrix adhesion, blockade of growth factor sequestration, and disruption of ECM-mediated signaling pathways.