Linaclotide is a 14-amino acid peptide indicated for the treatment of adults with CC and IBS-C; agonist of guanylate cyclase C
CAT No: 10-101-195
Acylated Linaclotide is a synthetic peptide derivative structurally related to the guanylate cyclase-C (GC-C) agonist linaclotide, distinguished by the presence of an acyl modification. As a member of the peptide family, it exhibits unique physicochemical properties that can alter its stability, membrane permeability, and receptor interaction profiles compared to its non-acylated counterpart. The acylation of linaclotide introduces a hydrophobic moiety, which can influence its pharmacokinetic behavior in experimental systems, making it a valuable tool for probing peptide modification effects in biochemical and pharmacological research. Its well-defined sequence and functional motifs allow researchers to explore structure-activity relationships and peptide engineering strategies relevant to gastrointestinal peptide hormones and related signaling pathways.
Peptide Structure-Activity Relationship Studies: Acylated variants of peptide agonists, such as this modified linaclotide, are instrumental in elucidating how chemical modifications impact biological activity. By comparing the bioactivity, receptor binding affinity, and downstream signaling of the acylated form to the parent molecule, researchers can gain insight into the structural determinants of GC-C agonism. This approach supports the rational design of next-generation peptides with optimized properties for research applications, including enhanced receptor selectivity or altered signaling kinetics.
Peptide Stability and Metabolic Profiling: The introduction of an acyl group often confers increased resistance to proteolytic degradation, a key consideration in peptide-based research. Using acylated linaclotide in stability studies allows for the assessment of degradation kinetics in various biological matrices, such as plasma or tissue homogenates. These experiments are crucial for understanding how chemical modifications affect peptide half-life, distribution, and metabolic fate, informing future design strategies for peptide-based probes or tool compounds.
Membrane Permeability and Transport Research: The hydrophobic acyl modification can significantly influence the peptide's interaction with cellular membranes, potentially enhancing its ability to traverse lipid bilayers or altering uptake mechanisms. Researchers investigating peptide transport, cellular uptake, or trans-epithelial movement can employ acylated linaclotide as a model system to study how lipidation affects these processes. Such studies are relevant for optimizing delivery strategies in peptide research and for understanding the fundamental biophysics of peptide-membrane interactions.
Analytical Method Development: The distinct physicochemical profile of acylated peptides makes them useful standards or probes in the development and validation of analytical methods, such as liquid chromatography-mass spectrometry (LC-MS) or capillary electrophoresis. By incorporating acylated linaclotide into method development workflows, scientists can evaluate the impact of acylation on chromatographic behavior, ionization efficiency, and detection sensitivity. These insights are valuable for refining analytical protocols used in peptide quantification, impurity profiling, or metabolite identification.
Peptide Synthesis and Modification Research: The synthesis of acylated linaclotide provides a practical model for developing and optimizing peptide acylation techniques. Researchers in peptide chemistry can use this compound to assess the efficiency and selectivity of various acylation reagents, coupling strategies, and purification methods. Such investigations contribute to the broader field of peptide engineering by enabling the systematic exploration of post-synthetic modifications and their impact on peptide function and manufacturability.
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