Cited by 151HIV Research and TreatmentImmunotherapy and Immune ResponsesHIV/AIDS Research and Interventions

Infection of Dendritic Cells (DCs), Not DC-SIGN-Mediated Internalization of Human Immunodeficiency Virus, Is Required for Long-Term Transfer of Virus to T Cells

Open access
Burleigh, Laura, Lozach, Pierre-Yves, Schiffer, Cécile, Staropoli, Isabelle, Pezo, Valérie, Porrot, Françoise, Canque, Bruno, Virelizier, Jean-Louis +2 more·2006·Journal of Virology

Abstract

The C-type lectin DC-SIGN expressed on immature dendritic cells (DCs) captures human immunodeficiency virus (HIV) particles and enhances the infection of CD4 + T cells. This process, known as trans -enhancement of T-cell infection, has been related to HIV endocytosis. It has been proposed that DC-SIGN targets HIV to a nondegradative compartment within DCs and DC-SIGN-expressing cells, allowing incoming virus to persist for several days before infecting target cells. In this study, we provide several lines of evidence suggesting that intracellular storage of intact virions does not contribute to HIV transmission. We show that endocytosis-defective DC-SIGN molecules enhance T-cell infection as efficiently as their wild-type counterparts, indicating that DC-SIGN-mediated HIV internalization is dispensable for trans -enhancement. Furthermore, using immature DCs that are genetically resistant to infection, we demonstrate that several days after viral uptake, HIV transfer from DCs to T cells requires viral fusion and occurs exclusively through DC infection and transmission of newly synthesized viral particles. Importantly, our results suggest that DC-SIGN participates in this process by cooperating with the HIV entry receptors to facilitate cis -infection of immature DCs and subsequent viral transfer to T cells. We suggest that such a mechanism, rather than intracellular storage of incoming virus, accounts for the long-term transfer of HIV to CD4 + T cells and may contribute to the spread of infection by DCs.

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Crossref · 10.1128/jvi.80.6.2949-2957.2006

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  • Later, immature DCs become productively infected and transmit viral particles produced de novo to T cells in the cis-infection process.

    “Later, immature DCs become productively infected, and transmit viral particles produced de novo to T cells in the cis-infection process [66,67,69,70].”

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Authors
Burleigh, L., Lozach, P.-Y., Schiffer, C., Staropoli, I., Pezo, V., Porrot, F., Canque, B., Virelizier, J.-L., Arenzana-Seisdedos, F., & Amara, A.
Affiliations
  • Unité d'Immunologie Virale
  • Centre National de la Recherche Scientifique (FR)
  • CNRS UMR 7151 IUH, Centre Hayem, Hôpital Saint Louis, 1 avenue Claude Vellefaux, 75475 Paris Cedex 10, France
  • Institut Curie INSERM U520, 12 rue Lhomond, 75005 Paris, France
  • Groupe Virus et Immunité, Institut Pasteur, 28 rue du Dr. Roux, 75724 Paris, France
Corresponding author
Amara, Ali
Venue
Journal of Virology
Published
2006-03-15
Volume
80
Issue
6
Pages
2949-2957
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W1983080372
Cited by
151
References
0
Citations by year
2025: 2 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 5 · 2017: 6 · 2016: 6 · 2015: 4 · 2014: 7 · 2013: 9 · 2012: 12
FWCI
8.10
Type
journal article
Language
en
Open access
Locations
  • Journal of Virology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Health Sciences › Medicine › Infectious Diseases › HIV/AIDS Research and Interventions
Keywords
HIV, dendritic cells, DC-SIGN, endocytosis, viral internalization, viral fusion, CD4+ T cells, HIV transmission, C-type lectin
MeSH terms
DC-Specific ICAM-3 Grabbing Nonintegrin, Amino Acid Sequence, Animals, Cell Line, Dendritic Cells, Humans, Molecular Sequence Data, Receptors, Cell Surface, CD4-Positive T-Lymphocytes, HIV-1, HIV Infections, Cell Adhesion Molecules, Lectins, C-Type

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