2. Signaling Pathways
  3. GPCR/G Protein
  4. Formyl Peptide Receptor (FPR)

Formyl Peptide Receptor (FPR)

Formyl peptide receptors (FPRs) are a group of G protein-coupled chemoattractant receptors, including FPR1, FPR2 and FPR3. FPR1 and FPR2 are expressed in both monocytes and neutrophils, while FPR3 is found in monocytes but not neutrophils. Besides myeloid cells, FPR1 is expressed in astrocytes, microglial cells, hepatocytes and immature dendritic cells. FPR2 shows an even wider distribution pattern than FPR1 and is expressed in a variety of non-myeloid cells including astrocytoma cells, epithelial cells, hepatocytes, microvascular endothelial cells, neuroblastoma cells, in addition to phagocytic leukocytes. FPRs are classified as Pathogen Recognition Receptors (PRRs) located on immune cells that play a key role in innate immunity due to their ability to recognize both, pathogen associated and damage-associated molecular patterns (PAMPs and DAMPs). FPRs participate not only in host defense and regulation of inflammatory response but also in the migration, proliferation, superoxide production and in several physio-pathological processes due to their unique binding properties and interaction with structurally diverse ligands.

Formyl Peptide Receptor (FPR) Related Products (47):

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-176403
    FPR1 antagonist 3
    		Antagonist
    FPR1 antagonist 3 (compound 10) is a potent and selective FPR1 antagonist. FPR1 antagonist 3 inhibits superoxide anion generation and elastase release with IC50s of 0.33 and 0.84 μM, respectively.
    FPR1 antagonist 3
  • HY-P5469
    WRW4-OH
    		Inhibitor
    WRW4-OH is a biological active peptide. (This peptide inhibits binding of one of formyl peptide receptor-like 1 (FPRL1) agonists WKYMVm to its specific receptor. FPRL1 is an important classical chemoattractant receptor that is expressed in phagocytic cells in the peripheral blood and brain. Activation of FPRL1 is closely related to inflammatory responses in the host defense mechanism and neurodegenerative disorders.)
    WRW4-OH
  • HY-P1121
    WKYMVM-NH2
    		Agonist
    WKYMVM-NH2 is a hexapeptide that activates neutrophils and myeloid cells via the FPRL1 and FPRL2 receptors. It exhibits EC50 values of 2 nM and 80 nM in HL-60-FPRL1 and HL-60-FPRL2 cells, respectively. In HL-60 cells stably expressing FPRL2, WKYMVM-NH₂ induces chemotaxis, with optimal migration observed at concentrations ranging from 10 to 50 nM. It also stimulates superoxide production in neutrophils, with an EC50 of 75 nM. WKYMVM-NH₂ is a useful tool for research in the field of inflammatory diseases.
    WKYMVM-NH2
  • HY-P1118A
    Ac9-25 TFA
    Ac9-25 TFA, a N-terminal peptide of Annexin I, acts as a formyl peptide receptor (FPR) agonist and activates the neutrophil NADPH oxidase through FPR.
    Ac9-25 TFA
  • HY-P10432
    SHAAGtide
    		Activator
    SHAAGtide is a FPRL1 activator. SHAAGtide has anti-inflammatory activity, mediates its biological activity via FPR2 and is used to reduce the expression of inflammatory cytokines in mouse models. SHAAGtide can be used in the study of diseases such as lung inflammation and fibrosis.
    SHAAGtide
  • HY-P2355A
    BOC-FlFlF TFA
    		Antagonist
    BOC-FlFlF (TFA) (Boc-Phe-dLeu-Phe-dLeu-Phe (TFA)) is a selective FPR1 antagonist. BOC-FlFlF has an apparent dissociation constant (KD) of 230 nM as determined by the intracellular calcium mobilization assay. BOC-FlFlF can be used for the study of inflammation.
    BOC-FlFlF TFA
  • HY-W288025
    ALXR-agonist-6
    		Agonist
    ALXR-agonist-6 (compound 36) is an ALXR agonist with the EC50 values of >10 μM for Ca2+ flux in CHO recombinant cells co-expressing hFPRL1.
    ALXR-agonist-6