Substance P receptor (SPR), also known as neurokinin receptor 1 (NK-1 R), is a member of the G-protein-coupled class of seven transmembrane domain receptors. SPR gene with five exons, spanning 45-60kb on genomic DNA, is mapped to human chromosome 2. SPR is highly expressed in central nervous system.
Synonyms: Anti-NK1R; Anti-SPR
MDL Number: MFCD01634202
Storage: -20C
Application: Anti-substance P receptor antibody produced in rabbit has been used in immunohistochemistry.
Biochem Physiol Actions: Substance P (SP) exhibits pro-inflammatory, endocrine, neuromodulatory and trophic activities. Substance P receptor (SPR) upon binding to its ligand SP, facilitates extravasation of granulocytes and in inflammation and tissue derangement. In addition, activation of this receptor also enhances metabolism of phosphoinositol, leading to synthesis of inositol-1,4,5-trisphosphate and diacylglycerol which results in release of Ca2+ from the endoplasmic reticulum and activation of protein kinase C. SPR along with its ligand stimulates tumoral angiogenesis and cell proliferation in a variety of cancer types. Inhibition of substance P receptor retards the growth of neuroblastoma (NB) cell lines. Thus, SPR might act as a potential therapeutic target for a large variety of patients with neuroblastoma. SP-SPR complex is also implicated in the regulation of the pain transmission.