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Updated: Aug 11, 2026

Nucleocapsid Annealing-Mediated Electrophoresis NAME Assay Allows the Rapid Identification of HIV-1 Nucleocapsid Inhibitors
Published on: January 19, 2015
Nanopore detects γ-radiation inhibited HIV-1 protease activity
Minghan Li1, Wei Li2, Yicen Xiao2
1School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China; Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China.
Gamma radiation effectively inhibits HIV-1 protease activity, significantly reducing its proteolytic function. This radiation-based inactivation shows promise as a complementary strategy for viral protein inhibition.
Area of Science:
- Biochemistry
- Radiation Biology
- Virology
Background:
- HIV-1 protease (PR) is a critical enzyme for viral replication.
- Developing novel inhibitors for HIV-1 PR is essential for therapeutic strategies.
- Understanding the impact of physical agents on viral enzyme function is crucial.
Purpose of the Study:
- To investigate the inhibitory effects of gamma radiation on HIV-1 protease activity.
- To quantify the loss of proteolytic efficiency in HIV-1 protease following radiation exposure.
- To explore the potential of gamma radiation as a method for viral protein inactivation.
Main Methods:
- Exposure of purified HIV-1 protease to varying doses of 60Co gamma radiation.
- Monitoring changes in enzyme kinetics and proteolytic efficiency using a nanopore sensor.
- Verification of inactivation effects in biological samples containing HIV-1 protease.
Main Results:
- Gamma radiation exposure led to a substantial loss of HIV-1 protease's proteolytic efficiency.
- Even ultra-low intensity gamma radiation (0.1K Gy) resulted in ~50% of GagPol polypeptide remaining unproteolyzed.
- High-intensity gamma-ray treatment inactivated over 90% of the enzyme's function.
- The inactivation effect was confirmed in blood samples containing the virus protease.
Conclusions:
- Gamma radiation effectively inhibits the enzymatic function of HIV-1 protease.
- Radiation-induced inactivation of viral protein function offers a potential complementary approach to traditional inhibitors.
- This study highlights the potential benefits of gamma radiation in combating viral infections by targeting essential viral proteins.
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