P2X receptors are a family of seven(P2X(1-7)) cation channels gated by extracellular ATP, widely expressed in neurons and nonneuronal cells. Lipid rafts are cholesterol/sphingolipid-rich membrane domains, involved in many cellular processes, including transmembrane receptor signaling, vesicle traffic, and protein sorting. We provide direct biochemical evidence that P2X(3) receptor localizes into lipid rafts, in primary cultures of cerebellar granule neurons as well as in brain and dorsal root ganglia extracts. We show that P2X(3) exhibits all the characteristics distinctive of a protein associated with lipid rafts. These characteristics include resistance to detergent extraction at 4degreesC, solubility after extraction of cholesterol from membranes with either saponin or methyl-beta-cyclodextrin, and partitioning to low buoyant density fractions after sucrose gradient centrifugation in both detergent-containing and detergent-free conditions. Furthermore, P2X(3) localizes in raft-containing fractions in transiently transfected SH-SY5Y neuroblastorna cells. The present finding contributes to the characterization of the functional localization of P2X(3) in neurons and provides a novel potential mechanism for correct targeting and dynamic activation of this receptor. (C) 2004 Wiley-Liss, Inc.

Vacca, F., Amadio, S., Sancesario, G., Bernardi, G., Volonte, C. (2004). P2X3 receptor localizes into lipid rafts in neuronal cells. JOURNAL OF NEUROSCIENCE RESEARCH, 76(5), 653-661 [10.1002/jnr.20069].

P2X3 receptor localizes into lipid rafts in neuronal cells

SANCESARIO, GIUSEPPE;BERNARDI, GIORGIO;
2004-01-01

Abstract

P2X receptors are a family of seven(P2X(1-7)) cation channels gated by extracellular ATP, widely expressed in neurons and nonneuronal cells. Lipid rafts are cholesterol/sphingolipid-rich membrane domains, involved in many cellular processes, including transmembrane receptor signaling, vesicle traffic, and protein sorting. We provide direct biochemical evidence that P2X(3) receptor localizes into lipid rafts, in primary cultures of cerebellar granule neurons as well as in brain and dorsal root ganglia extracts. We show that P2X(3) exhibits all the characteristics distinctive of a protein associated with lipid rafts. These characteristics include resistance to detergent extraction at 4degreesC, solubility after extraction of cholesterol from membranes with either saponin or methyl-beta-cyclodextrin, and partitioning to low buoyant density fractions after sucrose gradient centrifugation in both detergent-containing and detergent-free conditions. Furthermore, P2X(3) localizes in raft-containing fractions in transiently transfected SH-SY5Y neuroblastorna cells. The present finding contributes to the characterization of the functional localization of P2X(3) in neurons and provides a novel potential mechanism for correct targeting and dynamic activation of this receptor. (C) 2004 Wiley-Liss, Inc.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore MED/26 - Neurologia
English
Con Impact Factor ISI
cholesterol; lipid; methyl beta cyclodextrin; purine P2X3 receptor; saponin; sphingolipid; sucrose; actin; caveolin; caveolin 1; detergent; flotillins; glial fibrillary acidic protein; membrane protein; nerve protein; purine P2 receptor; animal cell; article; cell vacuole; cellular distribution; cerebellum; controlled study; density gradient centrifugation; extracellular space; extraction; granule cell; human; human cell; lipid membrane; nerve cell; neuroblastoma cell; nonhuman; priority journal; protein expression; protein family; protein localization; protein targeting; rat; spinal ganglion; animal; cell culture; cell fractionation; cell membrane; comparative study; cytology; drug effect; gel mobility shift assay; genetic transfection; immunohistochemistry; metabolism; methodology; neuroblastoma; newborn; Western blotting; Wistar rat; Actins; Animals; Animals, Newborn; Blotting, Western; Caveolin 1; Caveolins; Cell Fractionation; Cells, Cultured; Cerebellum; Detergents; Electrophoretic Mobility Shift Assay; Ganglia, Spinal; Glial Fibrillary Acidic Protein; Humans; Immunohistochemistry; Membrane Microdomains; Membrane Proteins; Nerve Tissue Proteins; Neuroblastoma; Neurons; Rats; Rats, Wistar; Receptors, Purinergic P2; Subcellular Fractions; Transfection
Vacca, F., Amadio, S., Sancesario, G., Bernardi, G., Volonte, C. (2004). P2X3 receptor localizes into lipid rafts in neuronal cells. JOURNAL OF NEUROSCIENCE RESEARCH, 76(5), 653-661 [10.1002/jnr.20069].
Vacca, F; Amadio, S; Sancesario, G; Bernardi, G; Volonte, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/35325
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