CCD Camera Detection of HIV Infection

Area of Science:

• Molecular Virology
• Cell Biology
• Biotechnology

Background:

• Accurate quantification of human immunodeficiency virus (HIV) infectivity is crucial for virologic studies and antiviral drug efficacy assessment.
• Existing methods may lack the speed, precision, or cost-effectiveness required for comprehensive HIV research.

Purpose of the Study:

• To develop and validate a rapid, precise, and cost-effective method for quantifying HIV infectivity.
• To establish a reproducible assay for measuring viral load and antiviral activity.

Main Methods:

• Utilized the P4R5 indicator cell line expressing HIV receptors and a reporter gene (β-galactosidase).
• Infected cells with HIV, stained infected cells blue using X-gal, and captured digital images with a CCD camera.
• Developed image-analysis software to count blue-stained foci, quantifying viral infectivity.

Main Results:

• The method enables rapid quantification of HIV infectivity across a broad range of viral inocula.
• Demonstrated reproducibility and accuracy in measuring infectivity.
• The assay is relatively low-cost, making it accessible for various research settings.

Conclusions:

• The described imaging-based method provides a robust tool for precise HIV infectivity quantification.
• This technique supports molecular virology, antiviral drug screening, and antibody neutralization studies.
• Offers a practical and efficient solution for HIV research and diagnostics.