Promigratory activity of oxytocin on umbilical cord blood-derived mesenchymal stem cells

Artificial Organs
Yong Sook KimYoungkeun Ahn

Abstract

Recent studies show that oxytocin has various effects on cellular behaviors. Oxytocin is reported to stimulate cardiomyogenesis of embryonic stem cells and endothelial cell proliferation. Mesenchymal stem cells (MSCs) are widely used for cardiac repair, and we elucidated the effect of oxytocin on umbilical cord derived-MSCs (UCB-MSCs). UCB-MSCs were pretreated with oxytocin (100 nM) and washed with saline prior to experiments. To evaluate their angiogenic potential and migration activity, tube formation assay and Boyden chamber assay were performed. For in vivo study, ischemia-reperfusion was induced in rats, and UCB-MSCs with or without oxytocin pretreatment were injected into the infarcted myocardium to evaluate the engraftment of injected cells. Histological and hemodynamic studies were performed. Oxytocin-treated UCB-MSCs showed a decrease in tube formation but a drastic increase in transwell migration activity. The transcription level of matrix metalloproteinase (MMP)-2 was increased in oxytocin-treated UCB-MSCs. Knock-down of MMP-2 by use of siRNA restored the tube formation, while reducing transmigration activity. In rats injected with oxytocin-treated UCB-MSCs, cardiac fibrosis and CD68 infiltration in the peri-infarct ...Continue Reading

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Mar 16, 2011·Artificial Organs·Paul S Malchesky
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