Intercellular Communication Via Intracellular Calcium Oscillations

Details Intercellular Communication Via Intracellular Calcium Oscillations Intercellular Communication Via Intracellular Calcium Oscillations

2001-11-15

arxiv.org/abs/physics/0111137v1

Physics

Biological Physics

11 pages, 4 figures

Scientific paper

In this letter we present the results of a simple model for intercellular communication via calcium oscillations, motivated in part by a recent experimental study. The model describes two cells (a "donor" and "sensor") whose intracellular dynamics involve a calcium-induced, calcium release process. The cells are coupled by assuming that the the input of the sensor cell is proportional to the output of the donor cell. As one varies the frequency of calcium oscillations of the donor cell, the sensor cell passes through a sequence of N:M phase locked regimes and exhibits a "Devil's staircase" behavior. Such a phase locked response has been seen experimentally in pulsatile stimulation of single cells. We also study a stochastic version of the coupled two cell model. We find that phase locking holds for realistic choices for the cell volume.

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