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Gremlin-1 is a secreted protein that specifically binds to bone morphogenic proteins (BMP) family proteins including BMP-2 and BMP-4, preventing them from interacting with their receptors (Hsu et al.). Gremlin-1 is expressed in colon basal crypts where it is thought to contribute to the maintenance of the stem cell niche (Kosinski et al.). Gremlin-1 expression is elevated in disease, including some colon tumors (Kosinski et al.), liver disease, and diabetes (Baboota et al.). Additionally, overexpression of Gremlin-1 has been shown to promote cancer cell migration, proliferation, and invasiveness in a VEGFR2- and BMP-independent manner (Kim et al.). Gremlin-1 has been used for the culture of human colon epithelia and carcinoma organoids (Urbischek et al.). This product is animal component-free (ACF).
Subtype
Cytokines
Alternative Names
BMP antagonist 1, Cell proliferation-inducing gene 2 protein, Cysteine knot superfamily 1, DAN domain family member 2, Down-regulated in Mos-transformed cells protein, DRM
Figure 1. Biological Activity and Molecular Mass of Human Recombinant Gremlin-1, ACF
(A) The biological activity of Human Recombinant Gremlin-1, ACF was tested by its ability to inhibit BMP-2 activity in stably transfected HEK293T cells using a luciferase reporter assay. Firefly luciferase activity is normalized to the control Renilla luciferase activity.The EC50 is defined as the effective concentration of the growth factor at which inhibition of BMP-2 activity is at 50% of maximum. The EC50 in the above example is 1.88 nM (34 ng/mL).
(B) 7 μg of Human Recombinant Gremlin-1, ACF was resolved with SDS-PAGE under reducing (+) and non-reducing (-) conditions and visualized by Coomassie Blue staining. Human Recombinant Gremlin-1, ACF has a predicted molecular mass of 18 kDa (monomer). The characteristic diffused bands are due to the dissociation of the non-covalent dimer during electrophoresis.