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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Enkephalin induces Ca2+ mobilization in single cells of bradykinin-sensitized differentiated neuroblastoma hybridoma (NG108-15) cells.

A study of the intracellular Ca2+ ([Ca2+]i) response of differentiated neuroblastoma x glioma hybrid cells (NG108-15 cell) to enkephalin (EK) was carried out by fura-2 video-imaging. EK alone did not influence [Ca2+]i in single cells. The opioid did, however, induce a marked [Ca2+]i rise, when the cells were incubated with bradykinin (BK) prior to the EK treatment. Such BK-assisted stimulation of the differentiated hybridoma cells by EK was completely abolished by pertussis toxin treatment. These results suggest that in single NG108-15 cells, EK induces Ca2+ mobilization which is assisted by cross-talk between the EK and BK receptor systems via a pertussis toxin-sensitive G protein.[1]

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