Related Experiment Video
Updated: Mar 2, 2026
13:04
A Protocol for Analyzing Hepatitis C Virus Replication
Published on: June 26, 2014
24.8K
Assessing activity of Hepatitis A virus 3C protease using a cyclized luciferase-based biosensor
Junwei Zhou1, Dang Wang2, Yongqiang Xi2
1State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China.
Biochemical and Biophysical Research Communications
|May 15, 2017
Summary
Researchers developed a novel luciferase biosensor to effectively monitor Hepatitis A virus protease activity. This tool offers a sensitive and rapid method for evaluating viral replication and understanding Hepatitis A virus (HAV) 3C protease functions.
Area of Science:
- Virology
- Molecular Biology
- Biochemistry
Background:
- Hepatitis A virus (HAV) causes acute infection globally.
- HAV 3C protease (3Cpro) is crucial for viral replication.
- HAV 3Cpro cleaves human NEMO, impacting interferon signaling.
Purpose of the Study:
- To develop and validate a novel luciferase biosensor for monitoring HAV 3Cpro activity.
- To assess the specificity and efficiency of the developed biosensor.
Main Methods:
- Generation of four luciferase-based biosensors incorporating the NEMO cleavage sequence.
- Detection of HAV 3Cpro activity in HEK-293T cells using Western blotting and luciferase assays.
- Validation of biosensor specificity against mutant proteases.
Main Results:
- One cyclized biosensor (233DH) demonstrated reliable and measurable increases in luciferase activity.
- The 233DH biosensor showed specific dependence on HAV 3Cpro activity.
- Western blotting confirmed HAV 3Cpro cleavage of the NEMO sequence in biosensors.
Conclusions:
- The developed 233DH luciferase biosensor provides a rapid, sensitive, and efficient method for evaluating HAV 3Cpro activity.
- This tool enhances understanding of HAV 3Cpro's biological relevance and viral replication processes.
