A Reliable Primary Cell Model for HIV Latency: The QUECEL (Quiescent Effector Cell Latency) Method.

Area of Science:

• Immunology
• Virology
• Molecular Biology

Background:

• The HIV reservoir is primarily established when infected effector CD4+ T cells transition to a memory phenotype.
• Understanding this transition is crucial for developing effective HIV latency-targeting therapies.

Purpose of the Study:

• To introduce and validate the QUECEL protocol for generating a homogeneous population of latently HIV-infected CD4+ T cells.
• To provide a robust and reproducible model for studying the molecular mechanisms of HIV latency.

Main Methods:

• The QUECEL protocol involves polarizing and expanding CD4+ T cells, followed by infection with a single-round reporter virus.
• Purified infected cells are induced into quiescence using a cytokine cocktail (TGF-β, IL-10, IL-8).
• The resulting homogeneous population of latently infected cells allows for high signal-to-noise ratio experiments.

Main Results:

• The QUECEL protocol efficiently produces large numbers of latently infected CD4+ T cells.
• The model demonstrates high consistency and reproducibility over five years of use.
• It accurately mimics physiological conditions of HIV reservoir formation.

Conclusions:

• The QUECEL model is a robust, efficient, and reproducible tool for investigating HIV latency.
• Its ability to generate homogeneous populations of latently infected cells facilitates detailed molecular studies.
• This protocol advances research into the mechanisms underlying persistent HIV infection.