Formyl-Peptide Receptors in Infection, Inflammation, and Cancer

Elisabeth Weiß1, Dorothee Kretschmer1

  • 1Infection Biology, Interfaculty Institute for Microbiology and Infection Medicine Tübingen (IMIT), University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany.

Trends in Immunology
|September 10, 2018
PubMed

Insights

Formyl-peptide receptors (FPRs) recognize various peptides and lipids, influencing both inflammation and its resolution. Recent research reveals their complex roles in inflammatory disorders, cancer, and infection.

Area of Science:

  • Immunology
  • Molecular Biology
  • Biochemistry

Background:

  • Formyl-peptide receptors (FPRs) are key immune sensors recognizing pathogen-derived and endogenous ligands.
  • Initially, FPRs were primarily linked to pro-inflammatory responses in leukocytes like neutrophils and macrophages.
  • Emerging evidence suggests FPRs also play a critical role in resolving inflammation.

Purpose of the Study:

  • To review recent findings on the multifaceted roles of FPRs.
  • To explore the association of FPR function with inflammatory conditions, cancer, and infection.

Main Methods:

  • Literature review of recent studies on FPRs.
  • Analysis of research linking FPRs to various disease states.

Main Results:

  • FPRs recognize a diverse range of molecules, including bacterial/mitochondrial peptides and endogenous lipids.
  • FPR activation extends beyond pro-inflammatory signals to include anti-inflammatory and resolution pathways.
  • FPRs are implicated in the pathogenesis and progression of inflammatory disorders, cancer, and infectious diseases.

Conclusions:

  • FPRs possess complex functions extending beyond initial assumptions of solely pro-inflammatory roles.
  • Understanding FPRs' dual role in inflammation and resolution is crucial for therapeutic strategies.
  • Further research into FPRs is warranted for conditions including cancer and infection.

Related Concept Videos

Inflammation01:38

Inflammation

Overview
62.2K
Peptide Bonds02:43

Peptide Bonds

A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
83.2K
Internal Receptors01:31

Internal Receptors

Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
74.7K
Receptor-mediated Endocytosis01:39

Receptor-mediated Endocytosis

Overview
111.0K
Enzyme-linked Receptors01:00

Enzyme-linked Receptors

Enzyme-linked receptors are proteins that act as both receptor and enzyme, activating multiple intracellular signals. This is a large group of receptors that include the receptor tyrosine kinase (RTK) family. Many growth factors and hormones bind to and activate the RTKs.
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
86.7K
G-protein Coupled Receptors01:21

G-protein Coupled Receptors

G-protein coupled receptors are ligand binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that transverses the cell membrane seven times creating intracellular and extracellular loops. The extracellular loops create a ligand specific pocket which binds to neurotransmitters or hormones. The intracellular loops holds onto the G-protein.
132.1K