期刊
CHEMISTRY & BIOLOGY
卷 16, 期 6, 页码 624-632出版社
CELL PRESS
DOI: 10.1016/j.chembiol.2009.05.004
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资金
- Fonclazione TERCAS
- Ministero delI'Istruzione
- dell'UniversitA e della Ricerca
- Agenzia Spaziale Italiana
The cellular uptake and the intracellular synthesis/degradation of anandamide are crucial steps for controlling its extracellular level and the duration of its activity. Although the biosynthesis and breakdown of anandamide are well understood, little is known about the mechanisms underlying its intracellular transport. Here, we investigated the presence of a potential carrier-mediated trafficking of anandamide within the cytosol, using a biotinylated analog as a tool to catch by affinity chromatography anandamide-interacting proteins. The identity of two of these anandamide-binding proteins, Hsp70 and serum albumin, was determined by mass spectrometry, confirmed by western blotting and confocal microscopy, and further validated through an anandamide-binding assay. These findings suggest that the trafficking of anandamide from the plasma membrane to the internal compartments of a cell occur via a non-vesicular mechanism mediated by cytosolic carriers.
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