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Influence of Oxygen in the Cultivation of Human Mesenchymal Stem Cells in Simulated Microgravity: An Explorative Study

机译:模拟微重力下氧气对培养人间充质干细胞的影响:一项探索性研究

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Previous studies indicated that human Adipose Tissue-derived Mesenchymal Stem Cells (AT-MSCs) cultured in simulated microgravity (sim-μg) in standard laboratory incubators alter their proliferation and differentiation. Recent studies on the stem cell (SC) niches and the influence of oxygen on SC proliferation, senescence, and differentiation point to oxygen level as one of the key regulators of SC fate. Here we present the results of a study that focussed at the evaluation of the influence of oxygen level in the cultivation of AT-MSCs in sim-μg. In detail, cells were cultured for 14 days in sim-μg using the Random Positioning Machine (RPM) and two different oxygen concentrations: 5 % and 20 %. The results were compared with those obtained at lg in the same conditions. Affymetrix Human Gene 1.0 ST array and Gene Ontology (GO) analysis were performed. The results confirmed that in all of the sim-μg experiments oxygen concentration modulates cell signalling and adhesion, in line with the knowledge that sim-μg affects cell shape and cytoskele-tal organization.
机译:先前的研究表明,在标准实验室培养箱中以模拟微重力(sim-μg)培养的人脂肪组织间充质干细胞(AT-MSC)会改变其增殖和分化。干细胞(SC)壁ches和氧对SC增殖,衰老和分化的影响的最新研究表明,氧水平是SC命运的关键调节因素之一。在这里,我们介绍了一项研究的结果,该研究的重点是评估氧水平对sim-g中AT-MSC培养的影响。详细地,使用随机定位机(RPM)和两种不同的氧气浓度(5%和20%)在sim-g中将细胞培养14天。将结果与在相同条件下在lg处获得的结果进行比较。进行了Affymetrix人类基因1.0 ST阵列和基因本体论(GO)分析。结果证实,在所有sim-g实验中,氧浓度调节细胞信号传导和粘附,这与sim-g会影响细胞形状和细胞骨架组织的认识相一致。

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