Palmulli, Couty and colleagues show that the tetraspanin CD63 promotes accumulation of cholesterol in intraluminal vesicles (ILVs) at the expense of retrieval from endosomes; cholesterol stored in ILVs and exosomes is recovered in an NPC1-dependent manner.
- Roberta Palmulli
- Mickaël Couty
- Guillaume van Niel