Creating class I MHC-null pigs using guide RNA and the Cas9 endonuclease.

Creating class I MHC-null pigs using guide RNA and the Cas9 endonuclease.
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DOI:
10.4049/jimmunol.1402059
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发表时间:
2014-12-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Tector AJ
Tector AJ
中科院分区:
其他
文献类型:
--
作者:
Reyes LM;Estrada JL;Wang ZY;Blosser RJ;Smith RF;Sidner RA;Paris LL;Blankenship RL;Ray CN;Miner AC;Tector M;Tector AJ

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猪正在成为生物医学研究的重要大型动物模型,并可能成为异种移植器官的来源。MHC对免疫系统在健康和疾病中的功能至关重要,在感染和移植排斥反应中尤为重要。I型MHC缺陷猪可作为研究病毒免疫、同种移植和异种移植排斥反应的重要试剂。我们报道了使用Cas9核酸酶和gRNAs创建和鉴定I类MHC基因敲除猪的过程。利用Cas9和gRNAs对猪胎儿成纤维细胞进行基因工程,将I类MHC阴性细胞作为体细胞核移植的供体。我们培育出3头不含所有细胞表面I类蛋白的仔猪。尽管这些动物外周血中的CD4CD8+T细胞水平降低,但这些猪看起来很健康,发育正常。这些猪是一种很有前途的免疫学研究试剂。
Pigs are emerging as important large animal models for biomedical research, and may represent a source of organs for xenotransplantation. The MHC is pivotal to the function of the immune system in health and disease, and is particularly important in infection and transplant rejection. Pigs deficient in class I MHC could serve as important reagents to study viral immunity, allograft and xenograft rejection. We report the creation and characterization of class I MHC knockout pigs using the Cas9 nuclease and gRNAs. Pig fetal fibroblasts were genetically engineered using Cas9 and gRNAs, and class I MHC negative cells were then used as nuclear donors for somatic cell nuclear transfer. We produced 3 piglets devoid of all cell surface class I proteins. Though these animals have reduced levels of CD4−CD8+ T cells in peripheral blood, the pigs appear healthy and are developing normally. These pigs are a promising reagent for immunological research.
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