期刊
ELECTROPHORESIS
卷 37, 期 15-16, 页码 2170-2174出版社
WILEY-BLACKWELL
DOI: 10.1002/elps.201600165
关键词
CE; Quantum dots; Self-assembly; Targeting peptide
资金
- National High Technology Research and Development Program of China (863 Program) [2014AA020521]
- National Natural Science Foundation of China [81201085, 81473269, 11532003]
- Natural Science Foundation of Jiangsu Province [BK20141170]
As is well known, quantum dots (QDs) have become valuable probes for cancer imaging. In particular, QD-labeled targeting peptides are capable of identifying cancer or tumors cells. A new colorectal cancer targeting peptide, cyclo(1, 9)-CTPSPFSHC, has strong targeting ability and also shows great potential in the identification and treatment of colon cancer. Herein, we synthesized a dual functional polypeptide, cyclo(1, 9)-CTPSPFSHCD(2)G(2)DP(9)G(3)H(6) (H-6-TCP), to investigate its interaction with QDs inside the capillary. Fluorescence-coupled CE was adopted and applied to characterize the self-assembly of H-6-TCP onto QDs. It was indicated that the formation of the assembly was affected by H-6-TCP/QD molar ratio and sampling time. This novel in-capillary assay greatly reduced the sample consumption and the detection time, which was beneficial for the environment. It is expected that this kind of detection method could find more applications to provide more useful information for cancer diagnosis and detection of harm and hazardous substances/organisms in the environment in the future.
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