Platelet-derived microvesicles induce differential gene expression in monocytic cells: A DNA microarray study
2006
Platelet-derived microvesicles (PMV) that are shed from the plasma membrane of activated platelets, expose various platelet-type antigens on their surface and are able to adhere to other blood cells and endothelial cells. There are several clinical conditions with markedly increased numbers of PMV, e.g. acute coronary syndrome, thrombotic microangiopathy and sepsis. To prove whether PMV may contribute to an inflammatory response we used DNA microarray technology to study the effect of PMV on gene expression in the prototypic monocytic cell line MonoMac 6 (MM6). PMV were generated by activating human platelets in plasma with collagen and subsequent removal of platelets and plasma by repeated centrifugation. MM6 were incubated for 2 h with PMV in a ratio corresponding to 75 platelets/cell, or saline as control. After RNA isolation, reverse transcription and fluorescence labelling, cDNA was hybridized on a medium density microarray comprising 5308 probes addressing 4868 transcripts of 4730 human genes releva...
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