CDB25:0003659 FSTL1 — CD14

Experimentally validated in Human; Orthology-inferred in Mouse, Rat, Frog, Chicken, Macaque, Pig, Dog, Cow, Chimp, Horse, Marmoset, Sheep

Title

Journal:; Year Published:

Abstract

Follistatin-related protein/follistatin-like 1 evokes an innate immune response via CD14 and toll-like receptor 4.

FEBS letters, 2012; PubMed, Homo sapiens FSTL1 — Homo sapiens CD14
ABSTRACT: Follistatin-related protein (FRP)/follistatin-like 1 (FSTL1) has multi-specific binding nature especially with TGF-β superfamily proteins, and thereby modulates organ development. However, its function in immune systems remains unclear. Previously, we reported FRP interacts with CD14, which is known to mediate toll-like receptor 4 (TLR4) signaling. Here, we investigated whether FRP activates TLR4 signaling. Recombinant FRP induced interleukin 6 or interleukin 8 production from target cells in a CD14- and TLR4-dependent manner. Moreover, similar to lipopolysaccharide (LPS), FRP induced tolerance to the second LPS stimulation. FRP has the function of evoking innate immune responses as one of the endogenous TLR4 agonists.
Basic Information on FSTL1
Ligand Name: follistatin like 1
Other Symbols: FRP, FSL1, OCC1, OCC-1, tsc36
Ligand Location: secreted based on hpa, perplexity, uniprot
HGNC Gene Symbol Report: FSTL1
GeneCards: FSTL1
Interactions with other Receptors for FSTL1
Basic Information on CD14
Receptor Name: CD14 molecule
Other Symbols: N/A
Receptor Location: cell membrane based on perplexity, uniprot
HGNC Gene Symbol Report: CD14
GeneCards: CD14
Interactions with other Ligands for CD14