Abstract
The octatetracontapeptide corresponding to the entire amino acid seuence of human thymopoietin (hTP) was synthesized by assembling ten peptide fragments in solution followed by deprotection with 1 M trifluoromethanesulfonic acid-thioanisole (molar ratio, 1 : 1) in trifluoroacetic acid in the presence of dimethylselenide and m-cresol. Finally, the deprotected peptide was incubated with dithiothreitol to reduce sulfoxide on the methionine side chain. The synthetic peptide was found to have a restoring effect on the impaired blastogenic response of T-lymphocytes isolated from uremic patients.
