Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (11): 3457.doi: 10.7503/cjcu20210442

• Review • Previous Articles     Next Articles

Selection of Functionalized Aptamers and Their Applications in Molecular Recognition

JI Cailing, CHENG Xing, TAN Jie(), YUAN Quan()   

  1. Institute of Chemical Biology and Nanomedicine,College of Chemistry and Chemical Engineering,State Key Laboratory of Chemo/Biosensing and Chemometrics,Hunan University,Changsha 410082,China
  • Received:2021-06-28 Online:2021-11-10 Published:2021-11-10
  • Contact: YUAN Quan E-mail:tanjie0416@hnu.edu.cn;yuanquan@whu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21904037);the Natural Science Foundation of Hunan Province, China(2020JJ5038)

Abstract:

Aptamers are single-stranded oligonucleotides selected from oligonucleotide libraries. Due to their specific molecular binding ability, aptamers have been employed as molecular recognition tools and have been widely used in biomedicine. The finite chemical composition of natural nucleic acid libraries limits the structure and function of aptamers, thus restricting the applications of aptamers in molecular recognition. Functionalized aptamers introduce specific chemical functional groups to endow nucleic acid sequences with rich spatial conformation and new properties, enhancing their molecular recognition capabilities. However, functionalized nucleic acids are difficult to be compatible with nucleic acid amplification methods, making it difficult for traditional selection protocols to screen functionalized nucleic acids. Therefore, optimizing the selection strategies is essential to obtain functionalized aptamers with excellent performance. This review summarizes the selection methods of functionalized aptamers, and introduces the application of functionalized aptamers as molecular recognition tools in the field of biomedicine.

Key words: Functionalized aptamer, Selection, Amplification, Molecular recognition

CLC Number: 

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