Migration Gene Expression of Human Umbilical Cord Mesenchymal Stem Cells: A Comparison Between Monophosphoryl Lipid A and Supernatant of Lactobacillus Acidophilus

<div style=textalign: justify;>the capacity of human umbilical cord mesenchymal stem cells (humscs)& nbsp; for migration and homing is very important in regenerative medicine. a detoxified derivative of lipopolysaccharides (lps) that lacks many of the endotoxic properties of lps is monophosphoryl lipid a (mpla).& nbsp; effects of mpla on the induction of mscs migration, have not yet been studied. also, studies have shown that supernatant of <em>lactobacillus acidophilus</em> (sla) culture medium, can stimulate the proliferation of macrophages and lymphocytes <em>in vitro</em> by affecting the properties of the chemotaxis and angiogenesis. our present study aimed to understanding of the migration of humscs during treatment with mpla and ls, separately. humscs were isolated from human umbilical cord and were characterized by investigating surface markers (cd105, cd90, anticd29, cd45, and cd34) and their differentiation into adipogenic and osteogenic lineages. humscs were treated with mpla (10³ &µ;g/ml) and sla (3 &µ;l/ml). the morphological changes were not observed in both treated mscs. <em>expression </em><em>levels</em>& nbsp;of migration& nbsp;<em>markers were </em>determined by quantitative reverse transcription pcr analysis on 2, 4, 6 days after treatment. results showed that <em>vegf</em> and <em>mmp2</em> but not <em>cxcr4</em> was increased in the presence of both treatments. also, sla led to a decrease and increase of the expression of <em>vla4</em> and <em>vcam1</em>, respectively, while mpla increased both <em>vla4</em> and <em>vcam1</em> expression.therefore, it can be suggested that mpla has more prominent results than sla, but both treatments can probably be considered as an inducing factor in migration.</div>