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:
影响因子:
--
通讯作者:
Tector AJ
中科院分区:
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
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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发表时间:
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期刊:
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