可逆的寡核酸链阻断使T细胞受体α和β链mRNA的捕获和放大成为可能
W Miachel Hanson, Zhe Chen, Laurie K Jackson
1Division of Infection & Immunity, Cardiff University School of Medicine , Cardiff, United Kingdom.
Journal of the American Chemical Society
|August 2, 2016
概括
研究人员开发了能够从单个细胞中捕获多个mRNA序列的新型DNA条形码珠. 这种进步增强了基因分析的应用,
科学领域:
- 分子生物学
- 基因组学
- 免疫学
背景情况:
- 下一代测序 (NGS) 可以进行全种群遗传研究,但不能解决单个细胞变异.
- 单细胞技术如Drop-seq条形码mRNA用于测序,创建细胞特异的转录景观.
- 目前的方法仅限于捕获mRNA多A尾部以外的信息.
研究的目的:
- 开发具有多个转录特异性捕获序列的DNA条形码珠,以增强基因分析.
- 为了使单个细胞的特定mRNA序列的高通量捕获和配对.
主要方法:
- 使用可逆链阻断组合成DNA条形码珠.
- 具有针对T细胞受体 (TCR) α和β链mRNA的恒定域的捕获序列的工程珠.
- 从T细胞RNA中捕获和配对TCRα和TCRβ序列.
主要成果:
- 成功合成了多个捕获序列的DNA条形码珠.
- 展示了这些珠子捕获和配对TCRα和TCRβ序列的能力.
- 实现对TCR序列的反转录和PCR放大.
结论:
- 这项研究提供了捕获数序珠的第一个例子.
- 开发的技术在自身免疫性疾病中对抗原受体链具有显著的效用.
- 这种方法也可用于测量癌症干细胞中的mRNA拼接变异比率.
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