بررسی اثر لیتیوم کلراید در القای سلول‌های استرومایی مغز استخوان به سلول‌هایی با فنوتیپ عصبی

  Background & Objective : Bone marrow stromal cells (BMSCs) are a kind of stem cells with high pluripotency. The BMSCs can differentiate into mesodermal and non mesodermal cells. Because of availability of them, they are a suitable source of adult stem cells for cell therapy. Some inducers were used to differentiate stem cells into neural phenotype, such: retinoic acid, dimethyl sulfoxide, deprenil & et al are cytotoxic compound. Lithium is a mood stabilizer drug that has supportive effect on neuronal cells. Our goal in this study is use of lithium chloride as a safe inducer for induction of BMSCs into neuronal phenotype.  Materials & Methods: The BMSCs were isolated from bone marrow of female rat’s femurs and tibias by aspiration and culturing. After 4 passages they were induced by lithium chloride (0.5mM) for 24 hours. Then they evaluated with microscopic and immunocytochemistry methods. In immunocytochemistry, anti-neurofilament 160, 68 and 200 KD and anti-synaptophysin antibody were used to characterize the neuronal phenotype.  Results: The results indicated that lithium chloride (0.5mM) can induced the BMSCs into neuronal phenotype after 24 hours. The percentage of fibronectin immunoreactive cells before induction was 95% and the percentage of neural markers immunoreactive cells after induction were 89.6% for neurofilament (NF) 68, 92% for NF-160, 93.2% for NF-200 and 70.2% for synaptophysin.