含有"极简主义"环烯的照片交叉链接器,适用于活细胞成像和基于亲和力的蛋白质标签
Zhengqiu Li1, Danyang Wang, Lin Li
1Department of Chemistry, National University of Singapore , 3 Science Drive 3, Singapore 117543.
Journal of the American Chemical Society
|June 28, 2014
概括
研究人员开发了新的化学探针,用于现场成像和活细胞中生物活性化合物的标识. 这一突破使得BRD-4等蛋白质的同时生物成像和共价标记成为可能,推动了药物发现和化学生物学.
科学领域:
- 化学生物学 化学生物学
- 蛋白质组学是指蛋白质组学.
- 药物发现 药物发现 药物发现
背景情况:
- 在原生细胞环境中识别生物活性化合物点至关重要,但使用传统的体外试验方法具有挑战性.
- 目前的方法缺乏同时成像和识别活细胞中小分子的目标的能力.
- 现有的光亲和度标签往往需要进行重大修改,并且与无铜的生物对角化学不兼容.
研究的目的:
- 开发新型化学探针,同时在现场成像和活哺乳动物细胞中生物活性化合物的标识.
- 创建适合无铜生物对等化学的极简链接器,使最小修改的探头成为可能.
- 为了对蛋白质组进行分析,并确定BRD-4抑制剂 (+) -JQ1.1. 的非目标.
主要方法:
- 开发新的极简主义链接剂,其中包含基亚齐林和环烯.
- 合成化学探针,如BD-2,结合这些链接器.
- 使用快速的,无铜的四烯-环烯结合,用于现场成像和共价标签.
- 进行基于细胞的蛋白质组分析实验.
主要成果:
- 新型化学探测器使得本位成像和内源BRD-4的共价标记能够同时进行.
- 探测器使用了快速的,无铜的生物对角反应 (四烯-环烯结合),具有高效率.
- 蛋白质组分析确定了BRD-4抑制剂 (+) -JQ1的潜在非标,其中几个通过验证得到证实.
结论:
- 开发的化学探针为在活细胞中同时进行生物成像和目标识别提供了强大的策略.
- 这种方法克服了先前方法的局限性,使得蛋白质和小分子相互作用能够在它们的原生环境中进行研究.
- 这些发现推动了药物发现和理解细胞机制的化学蛋白质组策略.
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