Solid-phase synthesis of thymosin alpha 1 using tert-butyloxycarbonylaminoacyl-4-(oxymethyl)phenylacetamidomethyl-resin.
Wong. T W TW; Merrifield. R B RB
Key Findings
- Using aminoacyl‑4-(oxymethyl)phenylacetamidomethyl‑resin improves yield and stability during synthesis
- The peptide‑resin bond resists damage from trifluoroacetic acid, reducing chain loss and termination
- Purified thymosin‑alpha‑1 is homogeneous and biologically active in the azathioprine‑sensitive rosette assay
Practical Outcomes
- The study mainly helps chemists develop more reliable production methods for thymosin‑alpha‑1, but it doesn’t provide new dosing or usage tips for everyday biohackers. If you’re not equipped for peptide synthesis, you’ll still need to buy the peptide from a reputable supplier.
Summary
Scientists figured out a better way to make the peptide thymosin‑alpha‑1 in the lab, using a special resin that keeps the peptide stable and gives higher yields, and they showed the final product works in a biological test.
Abstract
Thymosin alpha 1 and its desacetyl analogue were synthesized by the solid-phase method. Use of aminoacyl-4-(oxymethyl)phenylacetamidomethyl-resin resulted in an improved yield and allowed the synthetic products to be purified by simple ion-exchange and gel filtration chromatography. Success of the synthesis was largely due to enhanced stability of the peptide-resin linkage to trifluoroacetic acid and to the elimination of hydroxy functions on the resin. This improved quality of the solid support helps eliminate chain loss and chain termination during the synthesis. The purified synthetic peptides were found to be homogeneous by paper electrophoresis, isoelectric focusing in polyacrylamide gel, and thin-layer chromatography. They also had biological activity in the azathioprine-sensitive rosette assay. Use of the new 9-(2-sulfo)fluorenylmethyloxycarbonyl chloride reagent for purification of protected peptides was also demonstrated and discussed.
Study Information
pubmed
1980
1980-07-08T00:00:00.000Z
10.1021/bi00555a021