Electron Tomography of T Cells and SIV/HIV-1 Contact
Author Information
Author(s): Sougrat Rachid, Bartesaghi Alberto, Lifson Jeffrey D, Bennett Adam E, Bess Julian W, Zabransky Daniel J, Subramaniam Sriram
Primary Institution: National Cancer Institute, National Institutes of Health
Hypothesis
How do SIV and HIV-1 viruses interact with T cells during the entry process?
Conclusion
The study reveals a unique structure called the 'entry claw' that facilitates viral entry into T cells.
Supporting Evidence
- Electron tomography revealed the 3-D structure of SIV and HIV-1 virions.
- The entry claw consists of five to seven closely packed rods.
- The study provides insights into the molecular mechanisms of viral entry.
Takeaway
The study found that HIV and SIV viruses grab onto T cells using a special structure called the 'entry claw' to help them get inside.
Methodology
Electron tomography was used to analyze the 3-D structures of SIV and HIV-1 virions in contact with CD4+ T cells.
Limitations
The study may not capture all contact regions due to the thickness of the sections analyzed.
Participant Demographics
CD4+ T lymphocytes from human sources were used in the experiments.
Digital Object Identifier (DOI)
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