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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Shifting foci of hematopoiesis during reconstitution from single stem cells
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Shifting foci of hematopoiesis during reconstitution from single stem cells

机译:从单个干细胞重建过程中造血的转移灶

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摘要

To reveal the early events and dynamics of hematopoietic reconstitution in living animals in real-time, we used bioluminescence imaging to monitor engraftment from single luciferase-labeled hematopoietic stem cells (HSC) in irradiated recipients. Transplanted HSC generated discrete foci in the spleen and bone marrow (BM), at a frequency that correlated with BM compartment size. Initially detected foci could expand locally, seed other sites in BM or spleen, and/or recede with different kinetics. These studies reveal dynamic and variable patterns of engraftment from highly purified HSC and indicate that the final overall contribution of individual HSC to hematopoietic chimerism does not depend on the specific site of initial engraftment and expansion.
机译:为了实时揭示活体动物中造血重建的早期事件和动力学,我们使用生物发光成像来监测受荧光照射的受体中单个荧光素酶标记的造血干细胞(HSC)的植入。移植的HSC在脾脏和骨髓(BM)中产生离散的灶,其频率与BM间隔大小相关。最初检测到的病灶可能会局部扩展,在BM或脾脏中播种其他部位,和/或以不同的动力学消退。这些研究揭示了来自高度纯化的HSC的动态和可变的植入模式,并表明单个HSC对造血嵌合体的最终总体贡献不取决于初始植入和扩增的具体部位。

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