首页> 外文期刊>Journal of International Medical Research >Sleeping Beauty Transposon System is a Reliable Gene Delivery Tool for Hereditary Tyrosinaemia Type 1 Disease Gene Therapy: Size of the Foreign Gene Decides the Timing of Stable Integration into the Host Chromosomes
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Sleeping Beauty Transposon System is a Reliable Gene Delivery Tool for Hereditary Tyrosinaemia Type 1 Disease Gene Therapy: Size of the Foreign Gene Decides the Timing of Stable Integration into the Host Chromosomes

机译:睡美人转座子系统是遗传性1型酪氨酸血症1型疾病基因治疗的可靠基因传递工具:外源基因的大小决定了稳定整合入宿主染色体的时机

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OBJECTIVE: This study investigated compensation for loss of the fumaryl-aceto acetate hydrolase gene (Fah) by gene therapy using the Sleeping Beauty transposon system (SBTS), in a hereditary tyrosinaemia type 1 (HT-1) mouse model (Fah?/?). METHODS: Twenty Fah?/? study mice, five wild-type positive controls and five Fah?/? negative controls were included. All Fah?/? mice received 2-(2-nitro-4-trifluoro-methylbenzoyl)-1,3-cyclohexaedione (NTBC). Fah?/? study mice were randomly injected with one of two SBTS constructs: Fah-SBTS (containing mouse Fah gene), or forkhead box M1b (FOXM1B)-Fah-SBTS (containing mouse Fah and human FOXM1B genes). Firefly luciferase-SBTS was injected as a trace marker. NTBC treatment stopped after construct injection; Fah?/? negative controls were kept healthy with continued NTBC. Mice were weighed daily; the luciferase signal was monitored by in vivo bioluminescence, and Fah and FOXM1B gene expression were evaluated. RESULTS: The Fah gene integrated into the mouse chromosomes within 1 week of Fah-SBTS injection (mice survived without NTBC thereafter) and within 1 month of FOXM1B-Fah-SBTS injection (mice lost weight dramatically and needed additional NTBC). CONCLUSION: The shorter Fah gene had an advantage over the longer FOXM1B-Fah gene for stable integration into the host mouse chromosomes.
机译:目的:本研究使用遗传性1型酪氨酸血症(HT-1)小鼠模型,使用Sleeping Beauty转座子系统(SBTS),通过基因治疗研究了烟酰富马酸乙酰乙酸酯水解酶基因(Fah)的补偿(Fah?/? )。方法:二十华氏度?研究小鼠,五个野生型阳性对照和五个Fah?/?。包括阴性对照。全部Fah?/?小鼠接受2-(2-硝基-4-三氟-甲基苯甲酰基)-1,3-环己二酮(NTBC)。 ah?/?研究小鼠随机注射了两种SBTS构建体之一:Fah-SBTS(包含小鼠Fah基因)或叉头盒M1b(FOXM1B)-Fah-SBTS(包含小鼠Fah和人FOXM1B基因)。注射萤火虫荧光素酶-SBTS作为痕量标记。注入结构体后NTBC治疗停止; ah?/?持续进行NTBC可使阴性对照保持健康。每天对小鼠称重。通过体内生物发光监测荧光素酶信号,并评估Fah和FOXM1B基因表达。结果:Fah基因在注射Fah-SBTS的1周内(此后小鼠在没有NTBC的情况下存活)和在FOXM1B-Fah-SBTS注射的1个月内(小鼠体重显着减轻,需要额外的NTBC)整合到小鼠染色体中。结论:较短的Fah基因比较长的FOXM1B-Fah基因具有优势,可以稳定整合到宿主小鼠染色体中。

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