SB 290157

Biochem/physiol Actions

Cell permeable: no

Reversible: no

Product does not compete with ATP.

Target IC₅₀: 200 nM against the anaphylatoxin C3a receptor; 7, 12.5, and 27.7 nM, in blocking C3a-induced internalization of C3aR in human neutrophils and C3a-induced Ca2+ mobilization in basophilic leukemia RBL-2H3 cells expressing murine, guinea pig, or human C3aR

Primary TargetC3a receptor

General description

A non-peptide with anti-inflammatory properties that acts as a selective, high affinity, competitive antagonist of the anaphylatoxin C3a receptor (C3aR; IC₅₀ = 200 nM). Does not antagonize C5aR or other chemotactic G-protein coupled receptors. Blocks C3a-induced internalization of C3aR in human neutrophils and C3a-induced Ca²⁺ mobilization in basophilic leukemia RBL-2H3 cells expressing murine, guinea pig, or human C3aR (IC₅₀ = 7, 12.5, and 27.7 nM, respectively). Also blocks C3a-mediated ATP release from guinea pig platelets (IC₅₀ = 30 nM).

A non-peptide that acts as a selective, high affinity, competitive antagonist of the anaphylatoxin C3a receptor (IC₅₀ = 200 nM). Does not antagonize C5aR or other chemotactic G-protein-coupled receptors. Blocks C3a-induced internalization of C3aR in human neutrophils and C3a-induced Ca²⁺ mobilization in basophilic leukemia RBL-2H3 cells expressing murine, guinea pig, or human C3aR (IC₅₀ = 7, 12.5, and 27.7 nM, respectively). Also blocks C3a-mediated ATP release from Guinea pig platelets (IC₅₀ = 30 nM). Exhibits anti-inflammatory properties. Supplied as a trifluoroacetate salt.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Other Notes

Ames, R.S., et al. 2001. J. Immunol. 166, 6341.

Packaging

Packaged under inert gas

10 mg in Plastic ampoule

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C. Do not reuse solutions diluted in physiological buffers.

Warning

Toxicity: Standard Handling (A)