Poliovirus infection induces apoptosis in neuroblastoma cells via calcium flux from the endoplasmic reticulum to mitochondria.
Highlights calcium flux targets in enteroviral CNS disease; leaves open therapeutic translation pending in vivo studies.
We show that poliovirus (PV) infection induces an increase in cytosolic calcium (Ca(2+)) concentration in neuroblastoma IMR5 cells, at least partly through Ca(2+) release from the endoplasmic reticulum lumen via the inositol 1,4,5-triphosphate receptor (IP(3)R) and ryanodine receptor (RyR) channels. This leads to Ca(2+) accumulation in mitochondria through the mitochondrial Ca(2+) uniporter and the voltage-dependent anion channel (VDAC). This increase in mitochondrial Ca(2+) concentration in PV-infected cells leads to mitochondrial dysfunction and apoptosis.
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Brisac et al. (2010) studied this question.
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