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Updated: Jun 2, 2026

Phagosome Migration and Velocity Measured in Live Primary Human Macrophages Infected with HIV-1
Published on: September 5, 2016
Macrophages and Cell-Cell Spread of HIV-1
1Virus-Cell Interaction Section, HIV Drug Resistance Program, National Cancer Institute, Frederick, MD 21702, USA.
Abstract:
Macrophages have been postulated to play an important role in the pathogenesis of HIV-1 infection. Their ability to cross the blood-brain barrier and their resistance to virus-induced cytopathic effects allows them to serve as reservoirs for long-term infection. Thus, exploring the mechanisms of virus transmission from macrophages to target cells such as other macrophages or T lymphocytes is central to our understanding of HIV-1 pathogenesis and progression to AIDS, and is vital to the development of vaccines and novel antiretroviral therapies. This review provides an overview of the current understanding of cell-cell transmission in macrophages.
Insights
Macrophages are key reservoirs for human immunodeficiency virus type 1 (HIV-1) infection. Understanding how HIV-1 transmits between macrophages and other cells is crucial for developing new treatments and vaccines.
Area of Science:
- Immunology
- Virology
- Cell Biology
Background:
- Macrophages play a critical role in HIV-1 pathogenesis.
- Macrophages act as long-term reservoirs for HIV-1 due to their ability to cross the blood-brain barrier and resist virus-induced cell death.
Purpose of the Study:
- To review the current understanding of HIV-1 cell-to-cell transmission involving macrophages.
- To highlight the importance of studying macrophage-mediated transmission for developing effective HIV-1 therapies and vaccines.
Main Methods:
- This review synthesizes existing research on macrophage-to-cell HIV-1 transmission.
- It examines the mechanisms and implications of this transmission route.
Main Results:
- Macrophages are significant in HIV-1 spread to other immune cells, including T lymphocytes.
- Understanding these transmission dynamics is vital for controlling viral load and disease progression.
Conclusions:
- Cell-to-cell transmission by macrophages is central to HIV-1 pathogenesis and AIDS progression.
- Further research into these mechanisms is essential for advancing antiretroviral therapies and vaccine development.
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