Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (2): 307-312.doi: 10.1007/s40242-020-9111-8

• Articles • Previous Articles    

Ultrasensitive Detection of Hepatitis C Virus DNA Subtypes Based on Cucurbituril and Graphene Oxide Nano-composite

JIANG Ping1,2, LI Yifei2, JU Ting1,2, CHENG Wenbo3,4, XU Jianhua5, HAN Kun1,2,3   

  1. 1. University of Science and Technology of China, Hefei 230027, P. R. China;
    2. CAS Key Lab of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R. China;
    3. University of Chinese Academy of Sciences, Beijing 100049, P. R China;
    4. Institute of Optics and Electronics, Chengdu 610209, P. R. China;
    5. Laboratory of Oncology Science and Molecular Biology, Shunde Hospital of Guangzhou University of Chinese Medicine, Foshan 528333, P. R. China
  • Received:2019-12-25 Revised:2020-02-14 Online:2020-04-01 Published:2020-02-13
  • Contact: HAN Kun E-mail:hank@sibet.ac.cn
  • Supported by:
    Supported by the National Key R&D Program of China(No.2017YFC0108505]), the Youth Innovation Promotion Association of China(No.2015261), the National Natural Science Foundation of China(No.31500805), the "333 High-level Talents Training Project of Jiangsu Province", China and the Science and Technology Program of Suzhou, China(No.SYG201508).

Abstract: Infectious of hepatitis C viruses(HCVs) lead to hepatic fibrosis, cirrhosis even hepatoma. Developing rapid and sensitive diagnostic method for HCV is of great importance. Based on the host-and-guest interaction between cucurbit[7]uril(CB[7]) and methylene blue(MB), a CB[7]-graphene nano-composite(CB[7]-N3-GO) is raised for the electrochemical detection of HCV DNA. The method is able to linearly detect the HCV nucleic acid in the range of 0.2-10 nmol/L with detection limit as low as 160.4 pmol/L. The proposed detection strategy is able to discriminate the 1b and 6k subtypes of HCV and has a prospective potential in the blood screen for HCV in clinical diagnosis.

Key words: Hepatitis C virus, Cucurbit[7]uril, Graphene, Nano-composite, Assay