P60 peptide

P60 peptide

• COA/MS/HPLC Report
• Handling and Storage of Synthetic Peptides
• Material Safety Data Sheets (MSDS)

Batch to batch variation of the purity

H-RDFQSFRKMWPFFAM-OH

H-Arg-Asp-Phe-Gln-Ser-Phe-Arg-Lys-Met-Trp-Pro-Phe-Phe-Ala-Met-OH

15

99.08%

C₉₅H₁₃₂N₂₄O₂₀S₂

1994.34

Synthetic

Powder

Peptide P60 has demonstrated potential of inhibiting the immunosuppressive activity of murine and human derived regulatory T-cells (Tregs) and enhances the effector T-cell stimulation in vitro by binding to regulatory T-cells specific forkhead/winged helix transcription factor 3 (FOXP3). Peptide P60 can enter the cells to inhibit FOXP3 nuclear translocation and activity on other transcription factors. In vitro, peptide P60 (100 uM) inhibited murine and human-derived Treg and improved effector T cell stimulation.

Normally, this peptide will be delivered in lyophilized form and should be stored in a freezer at or below -20 °C. For more details, please refer to the manual:Handling and Storage of Synthetic Peptides

• Setiawan MF, Rudan O, Vogt A, Gonzalez-Carmona MA, Langhans B, Schmidt-Wolf R, Garofano F, Strassburg CP, Lasarte JJ, Casares N, Lozano T, Weiher H, Schmidt-Wolf IGH. FOXP3 Inhibitory Peptide P60 Increases Efficacy of Cytokine-induced Killer Cells Against Renal and Pancreatic Cancer Cells. Anticancer Res. 2019 Oct;39(10):5369-5374. doi: 10.21873/anticanres.13730. PMID: 31570431.

Trifluoroacetic acid (TFA) has a significant impact on peptides due to its role in the peptide synthesis process.

TFA is essential for the protonation of peptides that lack basic amino acids such as Arginine (Arg), Histidine (His), and Lysine (Lys), or ones that have blocked N-termini. As a result, peptides often contain TFA salts in the final product.

TFA residues, when present in custom peptides, can cause unpredictable fluctuations in experimental data. At a nanomolar (nM) level, TFA can influence cell experiments, hindering cell growth at low concentrations (as low as 10 nM) and promoting it at higher doses (0.5–7.0 mM). It can also serve as an allosteric regulator on the GlyR of glycine receptors, thereby increasing receptor activity at lower glycine concentrations.

In an in vivo setting, TFA can trifluoroacetylate amino groups in proteins and phospholipids, inducing potentially unwanted antibody responses. Moreover, TFA can impact structure studies as it affects spectrum absorption.