CDB15:0000567 FGA — ITGAV

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

Title

Journal:; Year Published:

Abstract

Alpha5beta1, alphaVbeta3 and the platelet-associated integrin alphaIIbbeta3 coordinately regulate adhesion and migration of differentiating mouse trophoblast cells.

Developmental biology, 2004; PubMed, Homo sapiens FGA — Mus Musculus Itgav
ABSTRACT: During blastocyst implantation, interaction between integrins on the apical surface of the trophoblast and extracellular matrix (ECM) in the endometrium anchors the embryo to the uterine wall. Strong adhesion of the blastocyst to fibronectin (FN) requires integrin signaling initiated by exogenous fibronectin. However, it is not known how integrin signaling enhances blastocyst adhesion. We present new evidence that the integrin, alphaIIbbeta3, plays a key role in trophoblast adhesion to fibronectin during mouse peri-implantation development. Trafficking of alphaIIb to the apical surface of the trophoblast increased dramatically after blastocysts were exposed to fibronectin, whereas other fibronectin-binding integrins, alpha5beta1 and alphaVbeta3, were resident at the apical surface before ligand exposure. Functional comparisons among the three integrins revealed that ligation of alpha5beta1 most efficiently strengthened blastocyst fibronectin-binding activity, while subsequent trophoblast cell migration was dependent primarily on the beta3-class integrins. In vivo, alphaIIb was highly expressed by invasive trophoblast cells in the ectoplacental cone and trophoblast giant cells of the parietal yolk sac. These data demonstrate that trafficking of alphaIIb regulates adhesion between trophoblast cells and fibronectin as invasion of the endometrium commences.
Basic Information on FGA
Ligand Name: fibrinogen alpha chain
Other Symbols: N/A
Ligand Location: secreted based on hpa, perplexity, uniprot
HGNC Gene Symbol Report: FGA
GeneCards: FGA
Interactions with other Receptors for FGA
Basic Information on ITGAV
Receptor Name: integrin subunit alpha V
Other Symbols: VNRA, MSK8, VTNR, CD51
Receptor Location: cell membrane based on perplexity, uniprot
HGNC Gene Symbol Report: ITGAV
GeneCards: ITGAV
HGNC Gene Group: CD molecules, Integrins