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    • 2015-10-06

    HOXC10 as a potential marker for discriminating between amnion- and decidua-derived mesenchymal stem cells.

    요약 :
    The HOX family of genes plays a fundamental role in the morphogenesis of vertebrate embryonic cells. HOX genes are thought to be important for the regulation of stem cells. We investigated HOX gene expression in
    mesenchymal stem cells (MSCs) from human placentas. We isolated MSCs from human placentas and confirmed stemness by fluorescence-activated cell sorting (FACS) analysis and differentiation studies. Using reverse
    transcription PCR, mRNA expression of 39 Class I HOX genes was measured in the MSCs. The expression of HOXB6, C4, C8, C10, D3, D4, and D10 were measured by Western blot analysis. HOXC10 was expressed in 10
    of 10 amnion-derived MSCs but in only 2 of 10 decidua-derived MSCs. HOXC4 and D10 were expressed in 100% of both amnion-derived MSCs and deciduas-derived MSCs. HOXD4 was silent in all amnion-derived MSCs and deciduas-derived MSCs (n¼10). HOX gene activation patterns might be a useful indicator for the detection of MSCs of different tissue origins. We demonstrated that HOXC10 is a gene that may discriminate between
    amnion-derived MSCs and decidua-derived MSCs

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    • 2015-10-06

    Canine mesenchymal stem cells are effectively labeled with silica nanoparticles and unambiguously visualized in highly autofluorescent tissues.

    요약 : 
    Background: Development of a method for long-term labeling of cells is critical to elucidate transplanted cell fate and migration as well as the contribution to tissue regeneration. Silica nanoparticles have been recently developed and demonstrated to be biocompatible with a high labeling capacity. Thus, our study was designed to assess the suitability of silica nanoparticles for labeling canine mesenchymal stem cells (MSCs) and the fluorescence afficiency in highly autofluorescent tissue.

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    • 2015-10-06

    Comparison of cell proliferation and epigenetic modification of gene expression patterns in canine foetal fibroblasts and adipose tissue-derived mesenchymal stem cells.

    요약 :
    Objectives: This study compared rate of cell proliferation, viability, cell size, expression patterns of genes related to pluripotency and epigenetic modification between canine foetal fibroblasts (cFF) and canine adipose tissue-derived mesenchymal stem cells (cAd-MSC). Materials and methods: Proliferation pattern, cell viability as well as cell size at each passage of cFF
    and cAd-MSC were measured when cultures reached confluence. In addition, real-time PCR was performed to investigate expression of Dnmt1,
    HDAC1, OCT4, SOX2, BAX, BCL2 genes with reference to b-actin gene expression as an endogenous control in both cell lines.

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    • 2015-10-06

    Adenovirus-mediated expression of human sodium-iodide symporter gene permits in vivo tracking of adipose tissue-derived stem cells in a canine myocardial infarction model.

    요약 : 
    Introduction: In vivo tracking of the transplanted stemcells is important in pre-clinical research of stemcell therapy for myocardial infarction. We examined the feasibility of adenovirus-mediated sodium iodide symporter
    (NIS) gene to cell tracking imaging of transplanted stem cells in a canine infarctedmyocardiumby clinical single photon emission computed tomography (SPECT).
    Methods: Beagle dogs were injected intramyocardially with NIS-expressing adenovirus-transfected canine stem cells (Ad-hNIS-canine ADSCs) a week after myocardial infarction (MI) development. 99mTc- methoxyisobutylisonitrile (99mTc-MIBI) and 99mTc-pertechnetate (99mTcO4−) SPECT imaging were performed for assessment of infarcted myocardium and viable stemcell tracking. Transthoracic chocardiographywas performed tomonitor any functional cardiac changes.

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    • 2015-10-06

    Enhanced hepatogenic transdifferentiation of human adipose tissue mesenchymal stem cells by gene engineering with Oct4 and Sox2.

    요약 : 
    Mesenchymal stem cells (MSCs) are attractive candidates for clinical repair or regeneration of damaged tissues. Oct4 and Sox2, which are essential transcription factors for pluripotency and self-renewal, are naturally expressed in MSCs at low levels in early passages, and their levels gradually decrease as the passage number increases. Therefore, to improve MSC proliferation and stemness, we introduced human Oct4 and Sox2 for conferring higher expansion and differentiation capabilities.

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    • 2015-10-06

    Isolation and characterization of mesenchymal stem cells from human amnion and decidua.

    요약 : 
    Objectives: The purpose of this study is to isolate a population of multipotent cells from human amnion and decidua, respectively.
    Methods: Human placentas (gestational age, 30~42 weeks) were obtained after vaginal or cesarean deliveries. Amnions and deciduas were divided mechanically. The collected cells from the amnion and decidua were cultured. Cultured cells were immunophenotypically characterized. The adipogenic, osteogenic and neurogenic differentiation capacities were tested, and their growth kinetics were analyzed.

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