CDB15:0001069 MFGE8 — ITGB3

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

Title

Journal:; Year Published:

Abstract

Mfge8 promotes obesity by mediating the uptake of dietary fats and serum fatty acids.

Nature medicine, 2014; PubMed, Homo sapiens MFGE8 — Homo sapiens ITGB3
ABSTRACT: Fatty acids are integral mediators of energy storage, membrane formation and cell signaling. The pathways that orchestrate uptake of fatty acids remain incompletely understood. Expression of the integrin ligand Mfge8 is increased in human obesity and in mice on a high-fat diet, but its role in obesity is unknown. We show here that Mfge8 promotes the absorption of dietary triglycerides and the cellular uptake of fatty acid and that Mfge8-deficient (Mfge8(-/-)) mice are protected from diet-induced obesity, steatohepatitis and insulin resistance. Mechanistically, we found that Mfge8 coordinates fatty acid uptake through αvβ3 integrin- and αvβ5 integrin-dependent phosphorylation of Akt by phosphatidylinositide-3 kinase and mTOR complex 2, leading to translocation of Cd36 and Fatp1 from cytoplasmic vesicles to the cell surface. Collectively, our results imply a role for Mfge8 in regulating the absorption and storage of dietary fats, as well as in the development of obesity and its complications.
Basic Information on MFGE8
Ligand Name: milk fat globule EGF and factor V/VIII domain containing
Other Symbols: SPAG10, SED1, EDIL1, BA46, OAcGD3S, HsT19888, MFG-E8, hP47
Ligand Location: secreted based on hpa, perplexity, uniprot
HGNC Gene Symbol Report: MFGE8
GeneCards: MFGE8
HGNC Gene Group: unknown
Interactions with other Receptors for MFGE8
Basic Information on ITGB3
Receptor Name: integrin subunit beta 3
Other Symbols: GP3A, CD61, GPIIIa
Receptor Location: cell membrane based on hpa, perplexity, uniprot
HGNC Gene Symbol Report: ITGB3
GeneCards: ITGB3
HGNC Gene Group: CD molecules, Integrins