运输机
化学
计算生物学
氨基酸
生物化学
生物
基因
作者
Zhibo Liu,Haojun Chen,Kai Chen,Yihan Shao,Dale O. Kiesewetter,Gang Niu,Xiaoyuan Chen
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2015-09-04
卷期号:1 (8)
被引量:49
标识
DOI:10.1126/sciadv.1500694
摘要
Amino acid transporters (AATs) are a series of integral channels for uphill cellular uptake of nutrients and neurotransmitters. Abnormal expression of AATs is often associated with cancer, addiction, and multiple mental diseases. Although methods to evaluate in vivo expression of AATs would be highly useful, efforts to develop them have been hampered by a lack of appropriate tracers. We describe a new class of AA mimics-boramino acids (BAAs)-that can serve as general imaging probes for AATs. The structure of a BAA is identical to that of the corresponding natural AA, except for an exotic replacement of the carboxylate with -BF3 (-). Cellular studies demonstrate strong AAT-mediated cell uptake, and animal studies show high tumor-specific accumulation, suggesting that BAAs hold great promise for the development of new imaging probes and smart AAT-targeting drugs.
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