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http://dx.doi.org/10.11620/IJOB.2012.37.4.175

Modification of Pluripotency and Neural Crest-Related Genes' expression in Murine Skin-Derived Precursor Cells by Leukemia Inhibitory Factor (LIF)  

Park, Sang Kyu (Cellular Reprogramming and Embryo Biotechnology Laboratory, Dental Research Institute, and CLS21, Seoul National University School of Dentistry)
Roh, Sangho (Cellular Reprogramming and Embryo Biotechnology Laboratory, Dental Research Institute, and CLS21, Seoul National University School of Dentistry)
Publication Information
International Journal of Oral Biology / v.37, no.4, 2012 , pp. 175-180 More about this Journal
Abstract
Skin-derived precursor cells (SKPs) are multipotent, sphere-forming and embryonic neural crest-related precursor cells that can be isolated from dermis. It is known that the properties of porcine SKPs can be enhanced by leukemia inhibitory factor (LIF) which is an essential factor for the generation of embryonic stem cells in mice. In our present study, to enhance or maintain the properties of murine SKPs, LIF was added to the culture medium. SKPs were treated with 1,000 IU LIF for 72 hours after passage 3. Quantitative real time RT-PCR was then performed to quantify the expression of the pluripotent stem cell specific genes Oct4, Nanog, Klf4 and c-Myc, and the neural crest specific genes Snai2 and Ngfr. The results show that the expression of Oct4 is increased in murine SKPs by LIF treatment whereas the level of Ngfr is decreased under these conditions. Interestingly, LIF treatment reduced Nanog expression which is also important for cell proliferation in adult stem cells and for osteogenic induction in mesenchymal stem cells. These findings implicate LIF in the maintenance of stemness in SKPs through the suppression of lineage differentiation and in part through the control of cell proliferation.
Keywords
Skin precursor cell; Leukemia inhibitory factor; Oct4; Nanog; Ngfr;
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