PMX 53

Cat. No. 5473

PMX 53 Ac-Phe-cyclo(Orn-Pro-D-Cha-Trp-Arg)

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Biological Activity

Potent C5a receptor antagonist (IC50 = 20 nM). Also MrgX2 agonist. Stimulates MrgX2-mediated mast cell degranulation. Also inhibits C5a-induced hypernociception in rats, inhibits lung metastasis in a mouse breast cancer model and reduces atherosclerotic lesions in a mouse model of atherosclerosis.

Technical Data


(Modifications: Phe-1 = N-terminal Ac, X-2 = Orn, X-4 = D-Cha, Lactam bridge: Orn-2 to Arg-6 )

Soluble to 2 mg/ml in water
Store at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

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Vadrevu et al (2014) Complement c5a receptor facilitates cancer metastasis by altering T-cell responses in the metastatic niche. Cancer Res. 74 3454. PMID: 24786787.

Manthey et al (2011) Complement C5a inhibition reduces atherosclerosis in ApoE-/- mice. FASEB J 25 2447. PMID: 21490292.

Subramanian et al (2011) PMX-53 as a dual CD88 antagonist and an agonist for Mas-related gene 2 (MrgX2) in human mast cells. Mol.Pharmacol. 79 1005. PMID: 21441599.

Ting et al (2008) Role of complement C5a in mechanical inflammatory hypernociception: potential use of C5a receptor antagonists to control inflammatory pain. Br.J.Pharmacol. 153 1043. PMID: 18084313.

Finch et al (1999) Low-molecular-weight peptidic and cyclic antagonists of the receptor for the complement factor C5a. J.Med.Chem. 42 1965. PMID: 10354404.

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Keywords: PMX 53, supplier, PMX53, potent, c5a, complement, system, receptors, antagonists, mrgx2, mas-related, agonists, hypernociception, Tocris Bioscience, Complement Antagonist products

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