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Luminometric method for screening retroviral protease inhibitors.
Dana Horáková1, Michaela Rumlová, Iva Pichová
1Department of Biochemistry and Microbiology, Institute of Chemical Technology, Technická 3, 166 28 Prague, Czech Republic.
Analytical Biochemistry
|August 30, 2005
Summary
We created a new assay to measure retroviral protease activity using a luminescent signal. This sensitive method is effective for high-throughput screening of antiviral drugs.
Area of Science:
- Biochemistry
- Enzymology
- Virology
Background:
- Retroviral proteases are essential for viral maturation and replication.
- Existing assays for protease activity can lack sensitivity or throughput.
- Developing novel assays is crucial for antiviral drug discovery.
Purpose of the Study:
- To develop and validate a sensitive luminometric assay for retroviral protease activity.
- To enable high-throughput screening of potential retroviral protease inhibitors.
Main Methods:
- A novel assay utilizing proteolytic cleavage of a MASON-PFITZER MONKEY VIRUS (M-PMV) Gag precursor polypeptide substrate.
- Substrate immobilized on Ni-NTA HisSorb Strips microplates and conjugated with horseradish peroxidase (HRP).
- Monitoring substrate cleavage via a decrease in luminescence resulting from HRP release.
Main Results:
- The assay demonstrated high sensitivity and specificity for detecting M-PMV protease activity.
- Successful inhibition of protease activity was confirmed using known M-PMV protease inhibitors.
- The assay format is suitable for adaptation to microplate-based high-throughput screening.
Conclusions:
- A sensitive and specific luminometric assay for retroviral protease activity has been established.
- This assay is suitable for high-throughput screening of retroviral protease inhibitors.
- The method offers a valuable tool for antiviral drug development research.