Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (3): 498-506.DOI: 10.19894/j.issn.1000-0518.210182

• Full Papers • Previous Articles    

A Commercial Glucose Meter for Portable in vitro Molecular Diagnosis of Hepatitis B Virus

Jia-Xue YU1,2, Chang WANG2,3, Mei-Ting YANG2, Yan DU2,3(), Chang LIU1()   

  1. 1.College of Pharmacy,Jinzhou Medical University,Jinzhou 121001,China
    2.State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    3.School of Applied Chemistry and Engineering,University of Science & Technology of China,Hefei 230026,China
  • Received:2020-04-12 Accepted:2020-07-30 Published:2022-03-01 Online:2022-03-15
  • Contact: Yan DU,Chang LIU
  • About author:liuchang@jzmu.edu.cnduyan@ciac.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(21874129);the International Technological Cooperation Project of Jilin Scientific and Technological Development Program(20200801044GH)

Abstract:

The current detection methods for hepatitis B virus (HBV) require high cost, complicated manipulation and are usually with high misdiagnosis rate. All the above issues have inspired us to develop a portable biosensing platform for the HBV detection. The loop-mediated isothermal amplification (LAMP) reaction designed for HBV sequence contributes to the single copy gene detection within 40 min. The immobilization of capture probe F-Probe (FP) on the magnetic beads (MBs) and the modification of FPc (partially complementary to FP) with heat-resistant invertase (Inv) collectively constitute the Inv-FPc signal probe, and the hybridization of Inv-FPc and FP creates the signal transduction probe, which with the HBV LAMP amplicons would induce the replacement of nucleic acid chains, isolating the Inv-FPc from the signal transduction probe. The Inv-FPc signal probe in the solution after magnetic separation would catalyze the transformation of sucrose into glucose that is read by glucometer. The experimental results show that the qualified signal response is in the concentration range of 10~500 nmol/L of HBV gene segments. Almost concordant signal and background are observed when employing Norovirus (NoV) gene as the target. The biosensor presents a perfect “yes/no” signal response in 10% human serum and has a potential to be applied in point of care diagnosis of HBV.

Key words: Loop-mediated isothermal amplification, Glucometer, Hepatitis B virus, Point-of-care testing

CLC Number: