UTA2-1 peptide

UTA2-1 peptide

• Handling and Storage of Synthetic Peptides
• Material Safety Data Sheets (MSDS)

Batch to batch variation of the purity

H-QLLNSVLTL-OH

H-Gln-Leu-Leu-Asn-Ser-Val-Leu-Thr-Leu-OH

9

95.17%

C₄₅H₈₁N₁₁O₁₄

1000.18

Synthetic

Powder

Peptide UTA2-1 is a minor histocompatibility antigen (mHag) that is expressed solely in hematopoietic cells and is highly relevant for the therapy of relapsed lymphoid and myeloid malignancies of the hematopoietic system after allogeneic stem-cell transplantation. It is currently included in clinical trials in which patients who are not responding to donor lymphocyte infusions are treated with mHag-loaded dendritic cell vaccinations.

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

• Hoppes R, Oostvogels R, Luimstra JJ, Wals K, Toebes M, Bies L, Ekkebus R, Rijal P, Celie PH, Huang JH, Emmelot ME, Spaapen RM, Lokhorst H, Schumacher TN, Mutis T, Rodenko B, Ovaa H. Altered peptide ligands revisited: vaccine design through chemically modified HLA-A2-restricted T cell epitopes. J Immunol. 2014 Nov 15;193(10):4803-13. doi: 10.4049/jimmunol.1400800. Epub 2014 Oct 13. PMID: 25311806; PMCID: PMC4226423.

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.