Specific Marking of HIV-1 Positive Cells using a Rev-dependent Lentiviral Vector Expressing the Green Fluorescent Protein

Overview

This study presents a novel lentiviral vector designed to detect HIV-positive cells through the expression of GFP in an HIV-1 Tat- and Rev-dependent manner. The method allows for the identification of replicating HIV in living cells, which has significant implications for therapeutic applications.

Key Study Components

Area of Science

• Neuroscience
• Virology
• Gene Therapy

Background

• HIV infection remains a major global health issue.
• Current methods for detecting HIV-positive cells are limited.
• Lentiviral vectors can be engineered for specific gene expression.
• The Rev-response element (RRE) enhances the specificity of detection.

Purpose of Study

• To develop a lentiviral vector that enables the detection of HIV-positive cells.
• To utilize GFP expression as a marker for identifying infected cells.
• To explore therapeutic implications of the vector in HIV treatment.

Methods Used

• Cotransfection of HEK 293T cells to produce lentiviral particles.
• Infection of human CD4 T cells with HIV-1 followed by superinfection with the lentiviral vector.
• Flow cytometry to measure GFP-positive cells.
• Determination of viral titer through serial dilutions and GFP observation.

Main Results

• Successful production of Rev-dependent lentiviral particles.
• Identification of HIV-positive cells via GFP expression.
• Flow cytometry results indicated a quantifiable percentage of infected cells.
• The vector demonstrated potential for delivering therapeutic genes.

Conclusions

• The developed lentiviral vector is effective for detecting HIV-positive cells.
• This method could enhance therapeutic strategies for HIV infection.
• Future studies may focus on optimizing the vector for gene therapy applications.

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