Phospholipid Scramblase 1 Modulates FcR-Mediated Phagocytosis in Differentiated Macrophages. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue PLoS ONE Année : 2016

Phospholipid Scramblase 1 Modulates FcR-Mediated Phagocytosis in Differentiated Macrophages.

Cecile Herate
  • Fonction : Auteur
Ghania Ramdani
  • Fonction : Auteur
Sabrina Marion
  • Fonction : Auteur
Stephane Gasman
Florence Niedergang
Serge Benichou
  • Fonction : Auteur
Jerome Bouchet

Résumé

Phospholipid Scramblase 1 (PLSCR1) was initially characterized as a type II transmembrane protein involved in bilayer movements of phospholipids across the plasma membrane leading to the cell surface exposure of phosphatidylserine, but other cellular functions have been ascribed to this protein in signaling processes and in the nucleus. In the present study, expression and functions of PLSCR1 were explored in specialized phagocytic cells of the monocyte/macrophage lineage. The expression of PLSCR1 was found to be markedly increased in monocyte-derived macrophages compared to undifferentiated primary monocytes. Surprisingly, this 3-fold increase in PLSCR1 expression correlated with an apparent modification in the membrane topology of the protein at the cell surface of differentiated macrophages. While depletion of PLSCR1 in the monocytic THP-1 cell-line with specific shRNA did not inhibit the constitutive cell surface exposure of phosphatidylserine observed in differentiated macrophages, a net increase in the FcR-mediated phagocytic activity was measured in PLSCR1-depleted THP-1 cells and in bone marrow-derived macrophages from PLSCR1 knock-out mice. Reciprocally, phagocytosis was down-regulated in cells overexpressing PLSCR1. Since endogenous PLSCR1 was recruited both in phagocytic cups and in phagosomes, our results reveal a specific role for induced PLSCR1 expression in the modulation of the phagocytic process in differentiated macrophages.
Fichier principal
Vignette du fichier
islandora_63917.pdf (8.93 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02922246 , version 1 (25-08-2020)

Identifiants

Citer

Cecile Herate, Ghania Ramdani, Nancy Grant, Sabrina Marion, Stephane Gasman, et al.. Phospholipid Scramblase 1 Modulates FcR-Mediated Phagocytosis in Differentiated Macrophages.. PLoS ONE, 2016, 11 (1), pp.e0145617. ⟨10.1371/journal.pone.0145617⟩. ⟨hal-02922246⟩
34 Consultations
10 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More