The reconstituted 'humanized liver' in TK-NOG mice is mature and functional.

The reconstituted 'humanized liver' in TK-NOG mice is mature and functional.
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DOI:
10.1016/j.bbrc.2011.01.042
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发表时间:
2011-02-18
影响因子:
3.1
通讯作者:
Suemizu H
Suemizu H
中科院分区:
生物学4区
文献类型:
--
作者:
Hasegawa M;Kawai K;Mitsui T;Taniguchi K;Monnai M;Wakui M;Ito M;Suematsu M;Peltz G;Nakamura M;Suemizu H

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为了克服现有模型的局限性,我们开发了一种新的实验性体内平台,用于用功能性人类肝脏组织替代小鼠肝脏。为此,单纯疱疹病毒1型胸苷激酶(HSVtk)转基因在高度免疫缺陷的NOG小鼠(TK-NOG)的肝脏内表达。小鼠肝细胞更昔洛韦(GCV)和移植的人肝细胞在没有外源性药物的情况下稳定地维持在肝脏内(人源化TK-NOG)。重建的肝脏被证明是一个成熟的和功能性的“人体器官”,具有区域位置特异性酶表达和代表成熟人肝脏的全局基因表达模式;并且可以产生药物代谢的人类特异性谱。“人源化肝脏”可以在这些小鼠中稳定地维持高水平的合成功能,持续较长的时间(8个月)。这种新的体内系统为研究人类肝脏生理学提供了一个优化的平台,包括药物代谢,毒理学或肝脏再生。
To overcome the limitations of existing models, we developed a novel experimental in vivo platform for replacing mouse liver with functioning human liver tissue. To do this, a herpes simplex virus type 1 thymidine kinase (HSVtk) transgene was expressed within the liver of highly immunodeficient NOG mice (TK-NOG). Mouse liver cells gancyclovir (GCV), and transplanted human liver cells are stably maintained within the liver (humanized TK-NOG) without exogenous drug. The reconstituted liver was shown to be a mature and functioning “human organ” that had zonal position-specific enzyme expression and a global gene expression pattern representative of mature human liver; and could generate a human-specific profile of drug metabolism. The ‘humanized liver’ could be stably maintained in these mice with a high level of synthetic function for a prolonged period (8 months). This novel in vivo system provides an optimized platform for studying human liver physiology, including drug metabolism, toxicology, or liver regeneration.
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