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首页> 外文期刊>Journal of Cellular Physiology >Mesenchymal stem cells contribute to endogenous FVIII: C production
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Mesenchymal stem cells contribute to endogenous FVIII: C production

机译:间充质干细胞促进内源性FVIII: C生产

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Besides the liver, it has been difficult to identify which organ(s) and/or cellular component(s) contribute significantly to the production of human FVIII:c (FVIII). Thus far, only endothelial cells have been shown to constitute a robust extrahepatic source of FVIII, possibly explaining both the diverse presence of FVIII mRNA in the body, and the observed increase in FVIII levels during liver failure. Here, we investigate whether human mesenchymal stem cells (MSC), ubiquitously present in different organs, could also contribute to FVIII production. MSC isolated from human lung, liver, brain, and bone marrow expressed FVIII message as determined by quantitative-RT-PCR. Using an antibody specific for FVIII, confocal microscopy, and umbilical cord-derived endothelial cells (HUVEC) as a negative control, we demonstrated that, in MSC, FVIII protein was not stored in granules; rather, it localized to the perinuclear region. Furthermore, functional FVIII was detected in MSC supernatants and cell lysates by aPTT and chromogenic assays. These results demonstrate that MSC can contribute at low levels to the functional FVIII pool, and advance the understanding of the physiology of FVIII production and secretion. J. Cell. Physiol. ? 2012 Wiley Periodicals, Inc.
机译:除了肝脏,已经很难识别哪些器官(s)和/或细胞组件(s)大大加剧生产人类FVIII: c (FVIII)。内皮细胞已被证明构成一个健壮的肝外FVIII的来源,可能解释的不同的存在FVIII mRNA在人体内,观察到的增加FVIII水平在肝衰竭。调查是否人类间充质干细胞(MSC),无所不在地出现在不同的器官,也可能导致FVIII生产。从人类分离肺、肝、脑和骨由骨髓表示FVIII消息quantitative-RT-PCR。FVIII,共焦显微镜和脐cord-derived血管内皮细胞(HUVEC)消极的控制,我们表明,在MSC,FVIII蛋白质不是存储在颗粒;局部细胞核周围的地区。此外,功能性FVIII检测在MSC由aPTT和上层清液和细胞溶解产物显色化验。MSC可以贡献在低水平功能性FVIII池和推进FVIII生理的理解生产和分泌。2012年威利期刊、公司。

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