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  • Title: Isolation, identification and multipotential differentiation of mouse adipose tissue-derived stem cells.
    Author: Taha MF, Hedayati V.
    Journal: Tissue Cell; 2010 Aug; 42(4):211-6. PubMed ID: 20483444.
    Abstract:
    Bone marrow and adipose tissue have provided two suitable sources of mesenchymal stem cells. Although previous studies have confirmed close similarities between bone marrow-derived stem cells (BM-MSCs) and adipose tissue-derived stem cells (ADSCs), the molecular phenotype of ADSCs is still poorly identified. In the present study, mouse ADSCs were isolated from the inguinal fat pad of 12-14 weeks old mice. Freshly isolated and three passaged ADSCs were analyzed for the expression of OCT4, Sca-1, c-kit and CD34 by RT-PCR. Three passaged ADSCs were analyzed by flow cytometry for the presence of CD11b, CD45, CD31, CD29 and CD44. Moreover, cardiogenic, adipogenic and neurogenic differentiation of ADSCs were induced in vitro. Freshly isolated ADSCs showed the expression of OCT4, Sca-1, c-kit and CD34, and two days cultured ADSCs were positively immunostained with anti-OCT4 monoclonal antibody. After three passages, the expression of OCT4, c-kit and CD34 eliminated, while the expression of Sca-1 showed a striking enhancement. These cells were identified positive for CD29 and CD44 markers, and they showed the lack of CD45 and CD31 expression. Three passaged ADSCs were differentiated to adipocyte-, cardiomyocyte- and neuron-like cells that were identified based on the positive staining with Sudan black, anti-cardiac troponin I antibody and anti-map-2 antibody, respectively. In conclusion, adipose tissue contains a stem cell population that seems to be a good multipotential cell candidate for the future cell replacement therapy.
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