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Open AccessReview

Development of Cell-SELEX Technology and Its Application in Cancer Diagnosis and Therapy

by 1,2,†, 1,3,†, 1,2,4, 1, 1, 1, 1, 1,2,3,* and 1,2,3,*
1
Institute of Integrated Bioinformedicine and Translational Science, School of Chinese Medicine, Hong Kong Baptist University (HKBU), Hong Kong 999077, China
2
Institute of Precision Medicine and Innovative Drug Discovery, HKBU (Haimen) Institute of Science and Technology, Haimen 226100, China
3
Shenzhen Lab of Comninatorial Compounds and Targeted Drug Delivery, HKBU Institute of Research and Continuing Education, Shenzhen 518000, China
4
The State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Stephen A. Bustin
Int. J. Mol. Sci. 2016, 17(12), 2079; https://doi.org/10.3390/ijms17122079
Received: 24 October 2016 / Revised: 28 November 2016 / Accepted: 2 December 2016 / Published: 10 December 2016
(This article belongs to the Special Issue Translational Molecular Medicine & Molecular Drug Discovery)
SELEX (systematic evolution of ligands by exponential enrichment) is a process involving the progressive isolation of high selective ssDNA/RNA from a combinatorial single-stranded oligonucleotide library through repeated rounds of binding, partitioning and amplification. SELEX-derived single-stranded DNA/RNA molecules, called aptamers, are selected against a wide range of targets, including purified proteins, live cells, tissues, microorganisms, small molecules and so on. With the development of SELEX technology over the last two decades, various modified SELEX processes have been arisen. A majority of aptamers are selected against purified proteins through traditional SELEX. Unfortunately, more and more evidence showed aptamers selected against purified membrane proteins failed to recognize their targets in live cells. Cell-SELEX could develop aptamers against a particular target cell line to discriminate this cell line from others. Therefore, cell-SELEX has been widely used to select aptamers for the application of both diagnosis and therapy of various diseases, especially for cancer. In this review, the advantages and limitations of cell-SELEX and SELEX against purified protein will be compared. Various modified cell-SELEX techniques will be summarized, and application of cell-SELEX in cancer diagnosis and therapy will be discussed. View Full-Text
Keywords: SELEX; aptamer; cell-SELEX; diagnosis; therapy; cancer SELEX; aptamer; cell-SELEX; diagnosis; therapy; cancer
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MDPI and ACS Style

Chen, M.; Yu, Y.; Jiang, F.; Zhou, J.; Li, Y.; Liang, C.; Dang, L.; Lu, A.; Zhang, G. Development of Cell-SELEX Technology and Its Application in Cancer Diagnosis and Therapy. Int. J. Mol. Sci. 2016, 17, 2079.

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