Emerging challenges of assigning P2X7 receptor function and immunoreactivity in neurons.

Abstract:

:Currently available antibodies to the P2X(7) receptor are unreliable determinants of neuronal P2X(7) immunoreactivity, owing to staining of a "P2X(7)-like" protein that is not eliminated by legitimate P2X(7) gene-knockout approaches. Despite this, compelling electrophysiological and pharmacological data strongly support a role for P2X(7) receptors in neuronal function and injury. A major priority for the field now is to identify the neuronal "P2X(7)-like" protein and develop effective antibodies selective for neuronal P2X(7) immunoreactivity. Until this occurs, we are dependent on rigorous application of multiple pharmacological criteria for attribution of neuronal function to P2X(7) receptors in non-human tissues, including greater activity in response to BzATP than to ATP, sensitivity to blockade by nanomolar concentrations of Brilliant Blue-G, irreversible antagonism by periodate-oxidized ATP, and lack of inhibition by suramin.

journal_name

Trends Neurosci

journal_title

Trends in neurosciences

authors

Anderson CM,Nedergaard M

doi

10.1016/j.tins.2006.03.003

subject

Has Abstract

pub_date

2006-05-01 00:00:00

pages

257-62

issue

5

eissn

0166-2236

issn

1878-108X

pii

S0166-2236(06)00066-X

journal_volume

29

pub_type

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