Expression of recombinant extracellular domain of the type II transforming growth factor-beta receptor: utilization in a modified enzyme-linked immunoabsorbent assay to screen TGF-beta agonists and antagonists.
TGF-beta is a ubiquitous protein that exhibits a broad spectrum of biological activity. The prokaryotic expression and purification of the extracellular domain of the type II TGF-beta receptor (T beta R-II-ED), without the need for fusion protein cleavage and refolding, is described. The recombinant T beta R-II-ED fusion protein bound commercially available TGF-beta 1 and displayed an affinity of 11.1 nM. In a modified ELISA, receptor binding to TGF-beta1 was inhibited by TGF-beta 3. The technique lends itself to high-throughput screening of combinatorial libraries for the identification of TGF-beta agonists and antagonists and this, in turn, may have important therapeutic implications.
Fahey
M S
MS
Department of Oral and Dental Science, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, United Kingdom.
Dawbarn
D
D
Allen
S J
SJ
Paterson
I C
IC
Prime
S S
SS
D001667:Binding, Competitive; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods*; D006801:Humans; D007700:Kinetics; D016133:Polymerase Chain Reaction / Q000379:methods; D017346:Protein Serine-Threonine Kinases; D017434:Protein Structure, Tertiary; D000077294:Receptor, Transforming Growth Factor-beta Type II; D018125:Receptors, Transforming Growth Factor beta / Q000819:agonists / Q000037:antagonists & inhibitors / Q000096:biosynthesis* / Q000737:chemistry; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000737:chemistry; D016212:Transforming Growth Factor beta / Q000737:chemistry* / Q000494:pharmacology; D053773:Transforming Growth Factor beta1; D053782:Transforming Growth Factor beta3
D018125:Receptors, Transforming Growth Factor beta; D011994:Recombinant Proteins; C508960:TGFB1 protein, human; D016212:Transforming Growth Factor beta; D053773:Transforming Growth Factor beta1; D053782:Transforming Growth Factor beta3; D017346:Protein Serine-Threonine Kinases; D000077294:Receptor, Transforming Growth Factor-beta Type II