Mouse TGF-β1 protein

Cytokine

TGF-β1

Lyophilized Mouse TGF-β1 proteinshould be stored desiccated below -20°C. Upon reconstitution, the protein should be stored at 4°C between 2-7 days and for future use below -20°C. For long term storage it is recommended to add a carrier protein (0.95% HSA or BSA). Please prevent freeze-thaw cycles.

TGF-β1 is a member of the transforming growth factor β (TGF-β) family. The transforming growth factor-β family of polypeptides are involved in the regulation of cellular processes, including cell division, differentiation, motility, adhesion and death. TGF-β1 positively and negatively regulates many other growth factors. It inhibits the secretion and activity of many other cytokines including interferon-γ, tumor necrosis factor-α and various interleukins. It can also decrease the expression levels of cytokine receptors. Meanwhile, TGF-β1 also increases the expression of certain cytokines in T cells and promotes their proliferation, particularly if the cells are immature. TGF-β1 also inhibits proliferation and stimulates apoptosis of B cells, and plays a role in controlling the expression of antibody, transferrin and MHC class II proteins on immature and mature B cells. As for myeloid cells, TGF-β1can inhibit their proliferation and prevent their production of reactive oxygen and nitrogen intermediates. However, as with other cell types, TGF-β1 also has the opposite effect on cells of myeloid origin. TGF-β1 is a multifunctional protein that controls proliferation, differentiation and other functions in many cell types. It plays an important role in bone remodeling as it is a potent stimulator of osteoblastic bone formation, causing chemotaxis, proliferation and differentiation in committed osteoblasts. Once cells lose their sensitivity to TGF-β1-mediated growth inhibition, autocrine TGF-β signaling can promote tumorigenesis. Elevated levels of TGF-β1 are often observed in advanced carcinomas, and have been correlated with increased tumor invasiveness and disease progression.

Lyophilized from sterile PBS, pH 7.4

The Endotoxin level is less than 1.0 EU per μg of the protein as determined by the LAL method

HEK293 Cells

The recombinant rat TGF-β1 comprises 112 amino acids and predicts a molecular mass of 12.8 kDa.