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P2Y1 nucleotide receptor silencing and its effect on glioma C6 calcium signaling

Dorota Wypych1, Pawel Pomorski

  • 1Laboratory of Molecular Basis of Cell Motility, Department of Biochemistry, Nencki Institute of Experimental Biology, Warsaw, Poland.

Acta Biochimica Polonica
|December 21, 2012
PubMed

Insights

Silencing the P2Y(1) receptor in glioma cells did not alter P2Y(12) receptor expression. However, it impacted ERK and Akt kinase phosphorylation, similar to serum deprivation effects.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Cell Biology

Background:

  • Earlier studies showed serum deprivation induced growth arrest and a shift from P2Y(1) to P2Y(12) receptors in glioma C6 cells.
  • Signaling cross-talk between nucleotide receptors is crucial in cellular processes.

Purpose of the Study:

  • To investigate if siRNA silencing of the P2Y(1) receptor affects P2Y(12) expression in glioma cells.
  • To determine the downstream physiological pathways influenced by P2Y(1) receptor silencing.

Main Methods:

  • Utilized siRNA technology to silence P2Y(1) nucleotide receptors in a C6 glioma cell line.
  • Assessed P2Y(12) receptor expression and downstream signaling pathways, including calcium signaling, ERK, and Akt phosphorylation.

Main Results:

  • Demonstrated the efficacy of siRNA for silencing P2Y nucleotide receptors in glioma C6 cells.
  • Found that P2Y(12) receptor expression was unaffected by P2Y(1) receptor silencing.
  • Observed less pronounced effects of P2Y(1) silencing on calcium signaling compared to protein level changes.
  • Reported similar effects on ERK phosphorylation and stronger effects on Akt phosphorylation as seen in serum deprivation experiments.

Conclusions:

  • P2Y(12) receptor expression is independent of P2Y(1) receptor levels in this glioma model.
  • P2Y(1) receptor silencing influences downstream signaling pathways like ERK and Akt phosphorylation, mimicking effects of serum deprivation.

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