Ex vivo gene transfer into hepatocytes.

Ex vivo gene transfer into hepatocytes.
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离体基因转移至肝细胞。

DOI:
10.1007/978-1-59745-201-4_11
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发表时间:
2009
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
通讯作者:
Roy-Chowdhury,Jayanta
Roy-Chowdhury,Jayanta
中科院分区:
--
文献类型:
--
作者:
Wang,Xia;Mani,Prashant;Sarkar,DebiP;Roy-Chowdhury,Namita;Roy-Chowdhury,Jayanta

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在基因治疗或细胞移植中,离体基因转移到肝细胞中可以起到多种作用:(1)分离的肝细胞可以在培养物中用治疗基因转导,然后移植到受体中;(2)可以引入标记基因,用于随后识别移植细胞及其后代;(3)基因转移可以用于肝细胞的条件永生化,以便在培养物中扩增;(4)可以将免疫调节基因转移到肝细胞中以防止同种异体移植拒绝。使用未掺入重组病毒的 DNA 可以将基因转移到培养的肝细胞中。在此类系统中,可以使用转座子系统增强转基因与宿主细胞基因组的整合,例如“睡美人”。除了使用常规试剂(例如阳离子脂质体)外,还可以通过 Nucleofection1® 或特殊的肝细胞靶向载体(例如含有半乳糖封端糖蛋白(例如仙台病毒的 F 蛋白)的脂蛋白体)来实现将 DNA 转移到肝细胞中。或者,可以使用重组病毒转移基因,例如附加型腺病毒载体或允许转基因整合到宿主基因组中的逆转录病毒载体(包括慢病毒)。使用慢病毒载体的基因转移已在贴壁肝细胞和悬浮肝细胞中实现。使用磁性纳米颗粒 (Magnetofection®) 可以提高慢病毒载体的转导效率。
Ex vivo gene transfer into hepatocytes could serve several purposes in the context of gene therapy or cell transplantation:(1)isolated hepatocytes can be transduced in culture with therapeutic genes and then transplanted into the recipient;(2)marker genes can be introduced for subsequent identification of transplanted cells and their progeny;(3)gene transfer can be used for conditional immortalization of hepatocytes for expansion in culture;(4)immunomodulatory genes can be transferred into hepatocytes to prevent allograft rejection. Gene transfer into cultured hepatocytes can be achieved using DNA that is not incorporated into recombinant viruses. In such systems, transgene integration into the host cell genome can be enhanced using transposon systems, such as “sleeping beauty.” In addition to using the conventional reagents, such as cationic liposomes, DNA transfer into hepatocytes can be achieved by Nucleofection1® or special hepatocyte-targeted carriers such as proteoliposomes containing galactose-terminated glycoproteins (e.g. the F protein of the Sendai virus). Alternatively, genes can be transferred using recombinant viruses, such as adenoviral vectors that are episomal or retroviral vectors (including lentiviruses) that permit integration of the transgene into the host genome. Gene transfer using lentiviral vectors has been achieved in both attached and suspended hepatocytes. Transduction efficiency of lentiviral vectors can be enhanced using magnetic nanoparticles (Magnetofection®).
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