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 (38):

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-110246
    Quin C1
    		Agonist 98.47%
    Quin C1 is a highly specific and potent agonist for formyl peptide receptor 2 (FPR2/ALX). Quin-C1 significantly reduces the neutrophil and lymphocyte counts in BALF, diminishes expression of TNF-α, IL-1β, KC, and TGF-β1, and decreases collagen deposition in lung tissue. Quin C1 has the potential for the research of lung injury.
    Quin C1
  • HY-144604
    FPR2 agonist 2
    		Agonist 99.59%
    FPR2 agonist 2 is a potent and permeates the blood?brain barrier FPR2 agonist with an EC50 of 0.13 μM, 1.1 μM for FPR2 and FPR1, respectively. FPR2 agonist 2 inhibits the production of pro-inflammatory cytokines, counterbalances the changes in mitochondrial function, and inhibits caspase-3 activity.
    FPR2 agonist 2
  • HY-103473
    Boc-MLF
    		Antagonist 99.93%
    Boc-MLF is a formyl peptide receptor (FPR) antagonist, and reduces superoxide production induced by fMLF with an IC50 of 0.63 μM.
    Boc-MLF
  • HY-P1591
    N-Formyl-Nle-Leu-Phe-Nle-Tyr-Lys
    		98.86%
    N-Formyl-Nle-Leu-Phe-Nle-Tyr-Lys TFA (For-Nle-Leu-Phe-Nle-Tyr-Lys-OH TFA) is a formyl peptide receptor (FPR) agonist.
    N-Formyl-Nle-Leu-Phe-Nle-Tyr-Lys
  • HY-P1118
    Ac9-25
    		98.54%
    Ac9-25, 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
  • HY-P1120A
    WKYMVm TFA
    WKYMVm (TFA) is a selective formylpeptide receptor 2 (FPR2) agonist. WKYMVm has a powerful anti-inflammatory effect that can reduce lung injury and spinal cord injury. WKYMVm ameliorates obesity by regulating lipid metabolism and leptin signaling. WKYMVm is involved in the regulation of immune cells by activating FPRs, and WKYMVm can promote the chemotactic migration of immune cells and inhibit the apoptosis of phagocytes. In addition, WKYMVm may play a favorable or unfavorable role in tumors, depending on the type of tumor.
    WKYMVm TFA
  • HY-P1119A
    WRW4 TFA
    WRW4 TFA, a specific formyl peptide receptor-like 1 (FPRL1) antagonist, inhibits WKYMVm binding to FPRL1 with an IC50 of 0.23 μM. WRW4 TFA specifically inhibits the increase in intracellular calcium by the FPRL1 agonists MMK-1, amyloid beta42 (Abeta42) peptide, and F peptide.
    WRW4 TFA
  • HY-W745090
    Isomaltulose monohydrate
    		Activator
    Isomaltulose monohydrate is a fMLP inhibitor and also inhibits Src kinase, ERK1/2, p38 and AKT phosphorylation signals in immune regulation. Isomaltulose monohydrate can interfere with the interaction between the βγ subunit of the fMLP receptor Gi protein and its downstream molecules, thereby inhibiting fMLP-induced respiratory burst. Isomaltulose monohydrate inhibits fMLP (0.1 μM)-induced superoxide anion production (IC50: 1.98 μM) , cathepsin G release (IC< sub>50: 2.76 μM) and chemotaxis. Isomaltulose monohydrate can improve excessive activation of neutrophils and reduce inflammation or tissue damage. A series of derivatives of Isomaltulose monohydrate are found to have inhibitory effects on FSGS-related TRPC6 functional mutants.
    Isomaltulose monohydrate
  • HY-P1117A
    MMK1 TFA
    		Agonist
    MMK1 TFA is a potent and selective human formyl peptide receptor like-1 (FPRL-1/FPR2) agonist with EC50s of <2 nM and >10000 nM for FPRL-1 and FPR1, respectively. MMK1 TFA is a potent chemotactic and calcium-mobilizing agonist. MMK1 TFA potently activates phagocytic leukocytes and enhances Pertussis Toxin-sensitive production by human monocytes of proinflammatory cytokines IL-1b and IL-6. MMK1 TFA exerts anxiolytic-like activity.
    MMK1 TFA
  • HY-P1591A
    N-Formyl-Nle-Leu-Phe-Nle-Tyr-Lys TFA
    N-Formyl-Nle-Leu-Phe-Nle-Tyr-Lys TFA (For-Nle-Leu-Phe-Nle-Tyr-Lys-OH TFA) is a formyl peptide receptor (FPR) agonist.
    N-Formyl-Nle-Leu-Phe-Nle-Tyr-Lys TFA
  • HY-156294
    FPR1 antagonist 2
    		Antagonist
    FPR1 antagonist 2 (compound 25b) is a formyl peptide receptor 1 (FPR1) antagonist with an IC50 of 70 nM. FPR1 antagonist 2 inhibits cell growth through a combined effect on cell proliferation and apoptosis and reduces cell migration, while inducing an increase in angiogenesis.
    FPR1 antagonist 2
  • 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-P10738
    N-Formyl-MMYALF
    		Inhibitor 99.59%
    N-Formyl-MMYALF is a potent mitochondrial N-formyl peptide (mtFP) that has the activity of depleting calcium ions in the endoplasmic reticulum. N-Formyl-MMYALF can inhibit the FPR-1-mediated chemotactic response of polymorphonuclear leukocytes (PMNs) to bacterial peptides.
    N-Formyl-MMYALF
  • 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-117971
    BVT173187
    		Inhibitor
    BVT173187 is a selective inhibitor of the neutrophil formyl peptide receptor FPR1, with activity that inhibits FPR1 activation. BVT173187 inhibits FPR1 agonist-induced activation in neutrophils, reduces adhesion molecule mobilization and superoxide anion production, and has inhibitory activity on FPR1 similar to that of earlier described peptide antagonists, but also has effects on C5aR and CXCR signaling.
    BVT173187
  • HY-P2355A
    {Boc}-Phe-Leu-Phe-Leu-Phe TFA
    {Boc}-Phe-Leu-Phe-Leu-Phe TFA is a formyl peptide receptor (FPR) family antagonist that preferentially inhibits activity triggered through the formyl peptide receptor.
    {Boc}-Phe-Leu-Phe-Leu-Phe 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