首页> 美国卫生研究院文献>The Journal of Veterinary Medical Science >The precursor osteoblast-like cell MC3T3-E1 cell line enhancessodium–calcium exchanger 1 (Ncx1) gene expression by stretch stimuliprior to osteoblast differentiation
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The precursor osteoblast-like cell MC3T3-E1 cell line enhancessodium–calcium exchanger 1 (Ncx1) gene expression by stretch stimuliprior to osteoblast differentiation

机译:前体成骨样细胞MC3T3-E1细胞系增强钠钙交换蛋白1(Ncx1)基因表达的拉伸刺激成骨细胞分化之前

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摘要

This study evaluated the expression of genes involved in the concentration of Ca2+ in precursor osteoblast-like cell, MC3T3-E1 subjected to stretching stimuli. Transient receptor potential vanilloid 4 (Trpv4) gene expression, the factor that is activated by stretch stimulation and enables inflow of Ca2+ from the extracellular space, was not affected as a result of stretch stimulation; conversely, the expression of sodium-calcium exchanger 1 (Ncx1) gene involved in outflow of intracellular Ca2+ increased, depending on stimulation intensity. Localization of Ca2+ correlated with the positioning of the endoplasmic reticulum, and intracellular Ca2+ decreased in inverse proportion to the intensity of the stretching force. These results suggest that stretch stimulation activates intracellular Ca2+ elimination rather than Ca2+ uptake before osteoblast differentiation.
机译:本研究评估了受拉伸刺激的前体成骨样细胞MC3T3-E1中Ca 2 + 浓度相关基因的表达。瞬时刺激电位香草酸4(Trpv4)基因表达是受拉伸刺激激活的因子,该因子可通过拉伸刺激激活并能使Ca 2 + 从细胞外空间流入;相反,取决于刺激强度,参与细胞内Ca 2 + 流出的钠钙交换蛋白1(Ncx1)基因的表达增加。 Ca 2 + 的定位与内质网的位置有关,细胞内Ca 2 + 的减小与拉伸力的强度成反比。这些结果表明,拉伸刺激在成骨细胞分化之前激活细胞内Ca 2 + 的消除,而不是Ca 2 + 的吸收。

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