Octreotide peptide

Octreotide peptide

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

Batch to batch variation of the purity

H-fCFwKTCT-OH, disulfide bond: Cys2-Cys7

H-(D)Phe-Cys-Phe-(D)Trp-Lys-Thr-Cys-Thr-OH

8

95.73%

C₄₉H₆₄N₁₀O₁₁S₂

1033.22

Synthetic

Powder

Octreotide (SMS 201-995) is a somatostatin receptor agonist and synthetic octapeptide endogenous somatostatin analogue. Octreotide (SMS 201-995) can bind to the somatostatin receptor and mainly subtypes 2, 3, and 5, increases Gi activity, and reduces intracellular cAMP production. Octreotide (SMS 201-995) has antitumor activity, mediates apoptosis and may also be used in disease studies in acromegaly.

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

• Wang XX, et al. Effects of octreotide on hepatic glycogenesis in rats with high fat diet-induced obesity. Mol Med Rep. 2017 Jul;16(1):109-118.
• Kugita M, et al. Beneficial effect of combined treatment with octreotide and pasireotide in PCK rats, an orthologous model of human autosomal recessive polycystic kidney disease. PLoS One. 2017 May 18;12(5):e0177934.

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.