A transgenic-cloned pig model expressing non-fluorescent modified Plum.

A transgenic-cloned pig model expressing non-fluorescent modified Plum.
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DOI:
10.1262/jrd.2016-041
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发表时间:
2016-10-18
期刊:
The Journal of reproduction and development
影响因子:
--
通讯作者:
Nagashima H
Nagashima H
中科院分区:
其他
文献类型:
--
作者:
Nagaya M;Watanabe M;Kobayashi M;Nakano K;Arai Y;Asano Y;Takeishi T;Umeki I;Fukuda T;Yashima S;Takayanagi S;Watanabe N;Onodera M;Matsunari H;Umeyama K;Nagashima H

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表达绿色和红色荧光蛋白等荧光蛋白的转基因猪近年来已成为不可或缺的生物医学研究工具。应使用荧光标记进行细胞或组织移植研究,其中荧光蛋白的异种抗原性不影响植入或移植物存活。因此,我们的目的是建立一个转基因(Tg)克隆猪,免疫耐受荧光蛋白抗原。在本研究中,我们产生了一个TG-克隆猪窝藏的衍生物的李子修改了一个单一的氨基酸取代的发色团。表达修饰的Plum(mPlum)的该Tg克隆猪的细胞和组织不发荧光。免疫印迹和免疫组织化学分析表明,mPlum具有与Plum相同的抗原性。因此,我们已经获得了创建对荧光蛋白抗原具有免疫耐受性的克隆猪的原理的初步证据。
Genetically modified pigs that express fluorescent proteins such as green and red fluorescent proteins have become indispensable biomedical research tools in recent years. Cell or tissue transplantation studies using fluorescent markers should be conducted, wherein the xeno-antigenicity of the fluorescent proteins does not affect engraftment or graft survival. Thus, we aimed to create a transgenic (Tg)-cloned pig that was immunologically tolerant to fluorescent protein antigens. In the present study, we generated a Tg-cloned pig harboring a derivative of Plum modified by a single amino acid substitution in the chromophore. The cells and tissues of this Tg-cloned pig expressing the modified Plum (mPlum) did not fluoresce. However, western blot and immunohistochemistry analyses clearly showed that the mPlum had the same antigenicity as Plum. Thus, we have obtained primary proof of principle for creating a cloned pig that is immunologically tolerant to fluorescent protein antigens.
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