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ADHESION MOLECULE EXPRESSION IN HUMAN ENDOTHELIAL CELLS UNDER SIMULATED MICROGRAVITY

机译:模拟微匍匐下人内皮细胞中的粘附分子表达

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High gravisensitivity of endothelium is now well recognized. Therefore, the microgravity can be one of the main factors affecting the endothelium in space flight. In this work we studied the effects of gravity vector randomization (3D-clinorotation in RPM) on the viability of endothelial cells from human umbilical vein (HUVEC) and the expression of adhesion molecules on its surface. After RPM exposure, HUVEC conditioning medium was collected for cytokines evaluation, a part of vials was used for immunocytochemistry and other one – for cytofluorimetric analysis of ICAM-I, VCAMI, PECAM-I, E-selectin, Endoglin, VE-cadherin expression. The viability of HUVEC and constitutive expression of EC marker molecules PECAM-I and Endoglin were similar in all experimental groups both after 6 and 24 hrs of exposure. There were no differences in ICAM-I and E-selectin expression on HUVEC in 3 groups after 6 hrs of exposure. 24 hrs incubation has provoked decrease in ICAM-I and Eselectin expression. Thus, gravity vector randomization can lead to the disruption of ECs monolayer.
机译:目前,内皮的高重力敏感性很高。因此,微再生可以是影响太空飞行中内皮的主要因素之一。在这项工作中,我们研究了重力载体随机化(RPM中的3D临床)对来自人脐静脉(HUVEC)的内皮细胞的活力以及其表面上粘附分子的表达。在RPM暴露之后,收集HUVEC调理培养基用于细胞因子评估,其中一部分小瓶用于免疫细胞化学和其他一项 - 用于ICAM-I,VCAMI,PECAM-I,E-SELETIN,endoglin,VE-CADHERIN表达的细胞杂氟荧光分析。在6至24小时的暴露后,所有实验组的Huvec和eC标志物分子PECAM-I和内膜的组成型表达的活力相似。在6小时接触后,在3组的HUVEC中的ICAM-I和E-Selectin表达没有差异。 24小时孵育在ICAM-I和ESELectin表达中引起了减少。因此,重力载体随机化可能导致ECS单层的破坏。

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