Abdou Rachid Thiam @abdourachidthiam.bsky.social · 05/08/2026For decades, the field has known that when ER cholesterol increases, SCAP binds INSIG and SREBP2 is silenced. In our new work, we propose that cholesterol esterification provides the missing physical mechanism. 100
Abdou Rachid Thiam @abdourachidthiam.bsky.social · 28/09/2025The second manuscript shows that lateral steric repulsion is a key factor controlling protein movement from the ER to lipid droplets. This mechanism can prevent some monotopic ER proteins from reaching LDs, or fine-tune their concentration there. 000
Abdou Rachid Thiam @abdourachidthiam.bsky.social · 28/09/2025Seipin beyond LDs: We’re only beginning to uncover what the vital ER protein seipin does beyond shaping lipid droplets. Our work also shows that it tunes the balance between sphingolipids and glycerolipids in the ER, an equilibrium crucial for protein secretion, notably of Cav1. 110