Title : The activation of P2X7 receptor induces cathepsin D-dependent production of a 20-kDa form of IL-1β under acidic extracellular pH in LPS-primed microglial cells.

Pub. Date : 2011 May

PMID : 21395581






7 Functional Relationships(s)
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1 We recently reported ATP induces the release of an unconventional 20-kDa form of IL-1beta (p20-IL-1beta) from lipopolysaccharide-primed microglial cells. Adenosine Triphosphate interleukin 1 beta Mus musculus
2 We recently reported ATP induces the release of an unconventional 20-kDa form of IL-1beta (p20-IL-1beta) from lipopolysaccharide-primed microglial cells. Adenosine Triphosphate interleukin 1 beta Mus musculus
3 Here, we investigated the pathways involved in the ATP-induced production of p20-IL-1beta using lipopolysaccharide-primed mouse microglial cells. Adenosine Triphosphate interleukin 1 beta Mus musculus
4 The activation of P2X7 receptor by ATP triggered p20-IL-1beta production under acidic extracellular conditions. Adenosine Triphosphate interleukin 1 beta Mus musculus
5 ATP-induced p20-IL-1beta production was blocked by pepstatin A, a potent inhibitor of the lysosomal protease, cathepsin D. Adenosine Triphosphate interleukin 1 beta Mus musculus
6 Since facilitation of pore dilatation results in cytolysis accompanied with cytoplasmic pro-IL-1beta leakage, our data suggest the leaked pro-IL-1beta is processed into p20-IL-1beta by cathepsin D released after ATP stimulation under acidic extracellular conditions. Adenosine Triphosphate interleukin 1 beta Mus musculus
7 Since facilitation of pore dilatation results in cytolysis accompanied with cytoplasmic pro-IL-1beta leakage, our data suggest the leaked pro-IL-1beta is processed into p20-IL-1beta by cathepsin D released after ATP stimulation under acidic extracellular conditions. Adenosine Triphosphate interleukin 1 beta Mus musculus