Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (4): 78-82.doi: 10.13560/j.cnki.biotech.bull.1985.2017.04.010

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The Latest Progress on the Methods for in Vitro Screening Aptamers

LI Ya-nan1, ZHAO Jie1, ZHANG Ao-zhe1, TAN Yan1, HUA Qian1, ZHANG Zi-jian2   

  1. 1. Basic Medical College,Beijing University of Chinese Medicine,Beijing 100029;
    2. Research Laboratory Center of Beijing University of Chinese Medicine,Beijing 100029
  • Received:2016-09-09 Online:2017-04-25 Published:2017-04-25

Abstract: Aptamers are single-stranded oligonucleotides that are screened by systematic evolution of ligands by exponential enrichment(SELEX)in vitro,which can selectively bind to different target with high affinity and high specificity,including protein,small molecules,organic compound,metal ions,drugs,etc. This technology has attracted more attentions for its advantages and thus it has been applied widely in many aspects such as biological sensor,gene chip,new drug development,nano technology,etc. However,the traditional SELEX method is cumbersome,which usually takes several months to screen out the target of nucleic acid in high specificity. With the rapid development of SELEX,many novel screening methods have emerged in recent years. The screening cycle and the screening efficiency are improved with these new methods,and the application of aptamers is expanded. This review introduces several new screening methods in recent three years,including multiple GO-SELEX,SWCNTs-assisted cell-SELEX,on-chip Cell-SELEX,Sequence-constructive SELEX and High-Fidelity(HI FI)SELEX,It is helpful for us to know more about the latest progress on the methods for in vitro screening aptamers and to promote the application of aptamers in various fields..

Key words: aptamer, SELEX, screening method