Octreotide acetate is a longer acting synthetic octapeptide analog of naturally occurring somatostatin. It inhibits the secretion of gastro-entero-pancreatic peptide hormones and the release of growth hormone.
CAT No: 10-101-200
CAS No:173606-11-6
Synonyms/Alias:D-phenylalanyl-L-cysteinyl-L-phenylalanyl-D-tryptophyl-N6-acetyl-L-lysyl-L-threonyl-N-[(1R, 2R)-2-hydroxy-1-(hydroxymethyl)propyl]-L-Cysteinamide cyclic (2→7)-disulfide
N-Acetyl-Lys-Octreotide is a synthetic octapeptide analog of the naturally occurring hormone somatostatin, characterized by its structural modifications that enhance biological stability and receptor affinity. This compound features an acetylated lysine residue, which contributes to its resistance against enzymatic degradation and prolongs its half-life in experimental settings. The unique peptide sequence of N-Acetyl-Lys-Octreotide enables it to interact selectively with somatostatin receptors, making it a valuable molecular tool for various research disciplines. Its physicochemical properties, including improved solubility and stability, support its application in diverse biochemical assays and mechanistic studies. Researchers utilize this peptide analog to investigate receptor binding dynamics, signal transduction pathways, and the modulation of hormone secretion, thus advancing the understanding of peptide-receptor interactions in cellular systems.
Receptor Binding Studies: N-Acetyl-Lys-Octreotide serves as a robust ligand in receptor binding assays, allowing scientists to analyze the specificity and affinity of somatostatin receptor subtypes. By radiolabeling or fluorescently tagging the peptide, researchers can track its binding kinetics and displacement by other ligands, thereby elucidating receptor-ligand interaction mechanisms. These studies facilitate the mapping of receptor distribution in various tissues and the identification of novel receptor modulators, contributing to drug discovery and pharmacological profiling efforts.
Signal Transduction Research: The peptide analog is extensively employed to probe intracellular signaling cascades activated by somatostatin receptors. By stimulating cells with N-Acetyl-Lys-Octreotide, investigators can monitor downstream effects such as changes in cyclic AMP levels, calcium flux, or phosphorylation events. This approach enables the dissection of signaling networks involved in cell proliferation, hormone secretion, and neuronal activity, offering insights into the physiological roles of somatostatin analogs and their therapeutic potential in modulating endocrine and neuroendocrine functions.
Endocrine Secretion Modulation: In experimental systems, N-Acetyl-Lys-Octreotide is utilized to study its inhibitory effects on the secretion of various hormones, including growth hormone, insulin, and glucagon. By applying the peptide to isolated islets, pituitary cells, or organ cultures, researchers can assess its impact on hormone release dynamics and feedback regulation. These investigations are pivotal for understanding the regulatory mechanisms governing endocrine homeostasis and for identifying potential targets for modulating hormone secretion in metabolic and endocrine disorders.
Receptor Internalization and Trafficking: The acetylated octreotide analog is a valuable probe for examining receptor internalization, trafficking, and recycling processes. Upon binding to cell surface somatostatin receptors, it triggers receptor endocytosis and subsequent intracellular trafficking events. By utilizing labeled forms of the peptide, scientists can visualize receptor movement within live cells, quantify rates of internalization, and study the molecular determinants of receptor recycling versus degradation. These findings contribute to the broader knowledge of G protein-coupled receptor (GPCR) regulation and cellular responsiveness to peptide ligands.
Peptide Stability and Enzymatic Degradation Studies: Due to its structural modifications, N-Acetyl-Lys-Octreotide is often used to compare the stability of peptide analogs against proteolytic enzymes. Researchers incubate the compound with various proteases or in biological fluids to assess its degradation profile, thereby gaining insights into the design of more stable peptide therapeutics. These studies inform structure-activity relationship analyses and the development of next-generation somatostatin analogs with improved pharmacokinetic properties, supporting advancements in peptide drug research and formulation science.
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