Calciprotein particles (CPPs) are indispensable scavengers of excessive Ca2+ and PO43- ions in the blood, being internalized and recycled by liver and spleen macrophages, monocytes, and endothelial cells (ECs). Despite the fact, that CPPs are associated with many cardiovascular diseases and are known to trigger endothelial dysfunction, the exact mechanisms of its recycling by ECs are still poorly studied. Particularly, because of the low resolution of the standard proteomics approach. We assume that CPPs internalization would cause oxidative stress and strong rearrangements in the transcription. Therefore, we performed a shotgun proteomics analysis of nuclear and mitochondrial fraction of human coronary artery endothelial cells (HCAEC) treated with primary (amorphous) or secondary (crystalline) CPPs (CPP-P and CPPs, respectively). Contact: Dr Anton G. Kutikhin, Laboratory of Molecular, Translational and Digital Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia (lab head).