The capsaicin receptor (VR1, TRPV1) is a ligand-activated non-selective calcium permeant cation channel involved in detection of noxious chemical and thermal stimuli. The receptor seems to mediate proton influx and may be involved in intracellular acidosis in nociceptive neurons. It is involved in mediation of inflammatory pain and hyperalgesia. Sensitized by a phosphatidylinositol second messenger system activated by receptor tyrosine kinases, which involves PKC isozymes and PCL. Activation by vanilloids, like capsaicin, and temperatures higher than 42 degrees Celsius, exhibits a time- and Ca2+-dependent outward rectification, followed by a long-lasting refractory state. Mild extracellular acidic pH (6.5) potentiates channel activation by noxious heat and vanilloids, whereas acidic conditions (pH less than 6) directly activate the channel. Can be activated by endogenous compounds, including 12-hydroperoxytetraenoic acid and bradykinin. Acts as ionotropic endocannabinoid receptor with central neuromodulatory effects. Triggers a form of long-term depression (TRPV1-LTD) mediated by the endocannabinoid anandamine in the hippocampus and nucleus accumbens by affecting AMPA receptors endocytosis (Ref: uniprot.org).

Flow Cytometry: 2 µg/106 cells.

Western blotting: 0.5-2 µg/mL , SDS-PAGE on Bis-Tris gel 4-12%, 5% beta-mercaptoethanol, primary antibody O/N incubation in 5% skim milk/TBST. Secondary is anti-mouse-HRP, 1/6000 dilution, 2h at room temperature. Blot developed on Li-Cor® C-DiGit® lot Scanner.

IHC: Frozen or PEG embedded tissues tested (PEG embedding, see Klosen P et al (1993) J Histochem Cytochem. 41(3):455-63). Conditions tested: 1-10 µg/mL in PBS, 48 hours, followed by detection via directly conjugated fluorescent anti-mouse secondary. Antibody not yet tested on paraffin embedded sections. Other immunohistochemistry methods not yet tested but are expected to be reactive.

ICC: 4% formaldehyde fixed cells tested; requires permeabilization step as antigen epitope is intracellular. Suggested primary antibody concentration: 1-2 µg/mL.

Biosensis recommends optimal dilutions/concentrations should be determined by the end user.

Type: Primary
Antigen: TrpV1
Clonality: Monoclonal
Clone: BS397
Conjugation: Unconjugated
Epitope: A synthetic peptide (C-GSLKPEDAEVFKDSMVPGEK) as a part of the C-terminal rat VR1 protein (aa: 819-838) has been used as the immunogen.
Host: Mouse
Isotype: IgG2b, κ-light chain
Reactivity: Rat;Mouse