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From Entry to the Nucleus: How Retroviruses Commute
Camila E Osega1, Fernando J Bustos1, Gloria Arriagada1
1Instituto de Ciencias Biomedicas, Facultad de Medicina y Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile;
Annual Review of Virology
|June 7, 2024
Summary
Retroviruses, like HIV-1, use complex cellular transport mechanisms to reach the host cell nucleus for DNA integration. This review details their journey, highlighting modulation of actin dynamics and microtubule utilization.
Area of Science:
- Cell Biology
- Virology
- Molecular Biology
Background:
- Retroviruses, including Human Immunodeficiency Virus type 1 (HIV-1), must deliver their genetic material into the host cell nucleus for replication.
- This process involves navigating the complex cellular environment, including crossing the cell cortex and traversing the cytoplasm.
- Understanding these intracellular transport mechanisms is crucial for developing antiviral strategies.
Purpose of the Study:
- To review the diverse mechanisms retroviruses employ for intracellular transport.
- To specifically examine the cellular journey of HIV-1 from entry to nuclear localization.
- To identify knowledge gaps in understanding retroviral intracellular trafficking.
Main Methods:
- Literature review of studies on retroviral intracellular transport.
- Focus on mechanisms involving actin dynamics and microtubule-based transport.
- Comparative analysis of HIV-1 transport with other retroviruses.
Main Results:
- Retroviruses modulate host cell actin dynamics to cross the cell cortex.
- Microtubules serve as essential tracks for cytoplasmic transport, facilitated by motor proteins.
- HIV-1 exhibits well-characterized transport pathways, while other retroviruses may utilize distinct or less understood mechanisms.
Conclusions:
- Retroviral intracellular transport is a highly regulated process involving specific interactions with host cell machinery.
- Microtubule-associated proteins and motors play critical roles in directing retroviruses towards the nucleus.
- Further research is needed to fully elucidate the transport mechanisms of less-studied retroviruses.
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