Thrombospondin 1 overexpression 293T lysate (whole cell)

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Thrombospondin 1 also known as TSP1 is a multi-functional glycoprotein involved in cellular processes like adhesion migration and tumorigenesis. It has a molecular weight of approximately 450 kDa. TSP1 is produced by multiple cell types including endothelial cells and fibroblasts and it is widely expressed in the extracellular matrix of both normal and tumor tissues. As a member of the thrombospondin family it interacts with cell receptors like integrins and CD36 to mediate its diverse functions.

Biological function summary

TSP1 is significant in modulating angiogenesis immune response and apoptosis. It acts as an anti-angiogenic factor by inhibiting endothelial cell proliferation and migration. TSP1 is a part of a larger complex where it interacts with other matrix proteins and growth factors to fine-tune cellular behavior within tissues. Through its binding domains it inhibits matrix metalloproteinases helping regulate matrix composition and tissue remodeling.

Pathways

TSP1 influences both the TGF-beta and NF-kB signaling pathways. In the TGF-beta pathway TSP1 activates latent TGF-beta contributing to tissue repair and fibrosis processes. It works synergistically with proteins like SMADs in these pathways. In the NF-kB pathway TSP1 modulates immune responses and inflammatory processes. Its interaction with CD36 and integrins in these pathways underlines its versatile role in cellular signaling.

TSP1 has been investigated in cancer progression and cardiovascular diseases. In cancer TSP1's anti-angiogenic properties suppress tumor vascularization which can slow tumor growth. Aberrant TSP1 expression levels have also been linked to atherosclerosis development as it interacts with endothelial cells and inflammatory molecules like TNF-alpha. In both these contexts TSP1 engages with proteins such as integrins and CD36 to exert its influence on disease progression.