Substance P, Free Acid is a native substance P analog, but shows no biological activity of substance P.
Substance P, Free Acid is a naturally occurring undecapeptide belonging to the tachykinin neuropeptide family, widely recognized for its pivotal role in neurotransmission, neurogenic inflammation, and pain signaling pathways. As a key mediator in the central and peripheral nervous systems, it is involved in a variety of physiological processes, including modulation of mood, stress response, and immune cell communication. Its unique amino acid sequence and high affinity for neurokinin-1 (NK1) receptors make it an indispensable tool in neurobiology, pharmacology, and peptide research. The free acid form offers enhanced solubility and compatibility with a range of experimental conditions, further broadening its utility in scientific investigations aimed at elucidating peptide structure-function relationships and receptor interactions.
Neurotransmitter Mechanism Studies: Researchers frequently employ Substance P, Free Acid to investigate the molecular mechanisms of neurotransmission, particularly those involving the NK1 receptor. By enabling controlled activation of this receptor subtype in vitro and in vivo, the peptide facilitates detailed analysis of downstream signaling cascades, receptor desensitization, and cross-talk with other neurotransmitter systems. Such studies are instrumental in mapping the complex neurochemical circuits underlying sensory perception, emotional processing, and the regulation of autonomic functions.
Pain Pathway Research: As a prototypical neuropeptide involved in nociception, Substance P is extensively used to model and dissect pain pathways at the molecular, cellular, and systems levels. Application of the peptide in neuronal cultures or animal models allows scientists to characterize the contribution of neuropeptidergic signaling to acute and chronic pain states. This work supports the identification of novel molecular targets and signaling intermediates that could inform the development of new pain research tools and experimental analgesic agents.
Inflammatory Response Investigation: The role of Substance P in modulating immune cell activity and promoting neurogenic inflammation is well established. Its application in immunological assays and cellular models provides insight into the mechanisms by which neuropeptides influence leukocyte recruitment, cytokine release, and vascular permeability. These studies are fundamental for advancing understanding of the neuroimmune interface and the contribution of peptide mediators to inflammatory disorders.
Peptide-Receptor Binding Assays: The high specificity of Substance P for the NK1 receptor makes it a valuable ligand in receptor binding experiments, affinity assays, and structure-activity relationship studies. Researchers utilize radiolabeled or fluorescently tagged forms of the peptide to quantify receptor distribution, binding kinetics, and competitive interactions with synthetic analogs or antagonists. These applications are critical for drug discovery, receptor pharmacology, and the validation of novel molecular probes.
Peptide Synthesis and Analytical Method Development: Synthetic Substance P, Free Acid serves as a standard reference material in peptide synthesis workflows and chromatographic method development. Its well-characterized structure and physicochemical properties enable the optimization of solid-phase peptide synthesis protocols, purification strategies, and analytical techniques such as HPLC and mass spectrometry. This utility extends to quality control assessments and the benchmarking of novel peptide analogs, supporting the advancement of peptide chemistry and analytical biochemistry.
2. Emerging applications of nanotechnology for diagnosis and therapy of disease: a review
3. Immune-awakening Saccharomyces-inspired nanocarrier for oral target delivery to lymph and tumors
4. Adipose tissue is a key organ for the beneficial effects of GLP-2 metabolic function
5. An Open-label, Single-center, Safety and Efficacy Study of Eyelash Polygrowth Factor Serum
If you have any peptide synthesis requirement in mind, please do not hesitate to contact us at . We will endeavor to provide highly satisfying products and services.
Creative Peptides is a trusted CDMO partner specializing in high-quality peptide synthesis, conjugation, and manufacturing under strict cGMP compliance. With advanced technology platforms and a team of experienced scientists, we deliver tailored peptide solutions to support drug discovery, clinical development, and cosmetic innovation worldwide.
From custom peptide synthesis to complex peptide-drug conjugates, we provide flexible, end-to-end services designed to accelerate timelines and ensure regulatory excellence. Our commitment to quality, reliability, and innovation has made us a preferred partner across the pharmaceutical, biotechnology, and personal care industries.
Read More