Dynamic Recycling of Extracellular ATP in Human Epithelial Intestinal Cells

Scientists characterized the dynamics of extracellular ATP (eATP) on polarised and non-polarised Caco-2 cells. eATP was quantified by luminometry using the luciferin-luciferase reaction. Results showed that non-polarized Caco-2 cells triggered a strong but transient release of intracellular ATP after hypotonic stimuli, leading to low micromolar eATP accumulation.