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IGF-1 and G-CSF complement each other in BMSC migration towards infarcted myocardium in a novel in vitro model
Authors:Mohsin Khan  Fridoon Jawad Ahmad
Institution:National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
Abstract:Stem cell capability enhanced with cytokine administration is a promising treatment for myocardial infarction. Bone marrow stem cells (BMSCs) were isolated from C57BL/6 mice (8-12 weeks old) expressing GFP and characterized with c-kit and CD34. Infarcted heart tissue fragments were placed into dishes with BMSCs and medium supplemented with G-CSF, SCF, IGF-1 or combinations thereof were given to the BMSC-infarcted myocardium in vitro model. The IGF-1-G-CSF group showed significantly higher migration (67.7% ± 2.6) of c-kit+ BMSCs towards the ischemic tissue and expressed MEF-2 (43.7% ± 1.7). Of the single treatment groups, the G-CSF group demonstrated significantly higher migration of c-kit+ BMSCs (60.5 ± 2.7) with MEF-2 expression (38.7 ± 1.4). IGF-1 complements G-CSF and was relatively more significant in its effects on BMSC migration and cardiac lineage commitment towards ischemic heart tissue.
Keywords:Bone marrow stem cells  Cytokines  Granulocyte-colony stimulating factor  Stem cell factor  Insulin-like growth factor-1  Stem cell mobilization
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