A Novel Mouse Model of iNKT Cell-deficiency Generated by CRISPR/Cas9 Reveals a Pathogenic Role of iNKT Cells in Metabolic Disease.

A Novel Mouse Model of iNKT Cell-deficiency Generated by CRISPR/Cas9 Reveals a Pathogenic Role of iNKT Cells in Metabolic Disease.
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DOI:
10.1038/s41598-017-12475-4
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发表时间:
2017-10-06
期刊:
影响因子:
4.6
通讯作者:
Watarai H
Watarai H
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ren Y;Sekine-Kondo E;Shibata R;Kato-Itoh M;Umino A;Yanagida A;Satoh M;Inoue K;Yamaguchi T;Mochida K;Nakae S;Van Kaer L;Iwabuchi K;Nakauchi H;Watarai H

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iNKT细胞通过桥接先天性和获得性免疫系统在免疫调节中发挥重要作用。iNKT细胞的功能已经在缺乏Traj 18基因片段的小鼠中进行了研究,这些基因片段是通过传统的胚胎干细胞技术产生的,但这些动物含有可能影响免疫反应的偏向性T细胞受体(TCR)库。为了规避这一混杂因素,我们通过使用CRISPR/Cas9技术删除Traj 18基因座产生了一种新的iNKT细胞缺陷小鼠品系,这些动物含有无偏倚的TCR库。我们使用这些小鼠来研究iNKT细胞对代谢疾病的贡献,并发现这些细胞在肥胖相关的胰岛素抵抗中的致病作用。新的Traj 18缺陷小鼠品系将有助于iNKT细胞生物学的研究。
iNKT cells play important roles in immune regulation by bridging the innate and acquired immune systems. The functions of iNKT cells have been investigated in mice lacking the Traj18 gene segment that were generated by traditional embryonic stem cell technology, but these animals contain a biased T cell receptor (TCR) repertoire that might affect immune responses. To circumvent this confounding factor, we have generated a new strain of iNKT cell-deficient mice by deleting the Traj18 locus using CRISPR/Cas9 technology, and these animals contain an unbiased TCR repertoire. We employed these mice to investigate the contribution of iNKT cells to metabolic disease and found a pathogenic role of these cells in obesity-associated insulin-resistance. The new Traj18-deficient mouse strain will assist in studies of iNKT cell biology.
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