Cited by 240HIV Research and TreatmentHIV/AIDS Research and InterventionsImmunotherapy and Immune Responses

DC-SIGN–mediated Infectious Synapse Formation Enhances X4 HIV-1 Transmission from Dendritic Cells to T Cells

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Arrighi, Jean-François, Pion, Marjorie, Garcia, Eduardo, Escola, Jean-Michel, van Kooyk, Yvette, Geijtenbeek, Teunis B., Piguet, Vincent·2004·The Journal of Experimental Medicine

Abstract

Dendritic cells (DCs) are essential for the early events of human immunodeficiency virus (HIV) infection. Model systems of HIV sexual transmission have shown that DCs expressing the DC-specific C-type lectin DC-SIGN capture and internalize HIV at mucosal surfaces and efficiently transfer HIV to CD4+ T cells in lymph nodes, where viral replication occurs. Upon DC–T cell clustering, internalized HIV accumulates on the DC side at the contact zone (infectious synapse), between DCs and T cells, whereas HIV receptors and coreceptors are enriched on the T cell side. Viral concentration at the infectious synapse may explain, at least in part, why DC transmission of HIV to T cells is so efficient. Here, we have investigated the role of DC-SIGN on primary DCs in X4 HIV-1 capture and transmission using small interfering RNA–expressing lentiviral vectors to specifically knockdown DC-SIGN. We demonstrate that DC-SIGN− DCs internalize X4 HIV-1 as well as DC-SIGN+ DCs, although binding of virions is reduced. Strikingly, DC-SIGN knockdown in DCs selectively impairs infectious synapse formation between DCs and resting CD4+ T cells, but does not prevent the formation of DC–T cells conjugates. Our results demonstrate that DC-SIGN is required downstream from viral capture for the formation of the infectious synapse between DCs and T cells. These findings provide a novel explanation for the role of DC-SIGN in the transfer and enhancement of HIV infection from DCs to T cells, a crucial step for HIV transmission and pathogenesis.

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  1. [32]Arrighi, J.F., M. Pion, M. Wiznerowicz, T.B. Geijtenbeek, E. Garcia, S. Abraham, F. Leuba, D. Dutoit, O. Ducrey-Rundquist, Y. van Kooyk, et al. 2004. Lentiviral-mediated RNA interference of DC-SIGN expression abrogates HIV transmission from dendritic cells to T cells. J. Virol. 78: 10848–10855. 15452205 PMC521813

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Authors
Arrighi, J.-F., Pion, M., Garcia, E., Escola, J.-M., van Kooyk, Y., Geijtenbeek, T. B., & Piguet, V.
Affiliations
  • University Hospital of Geneva (CH)
  • 2Department of Molecular Cell Biology and Immunology, VUMC, 1081 BT Amsterdam, Netherlands
  • Amsterdam UMC Location Vrije Universiteit Amsterdam (NL)
Corresponding author
Piguet, Vincent
Venue
The Journal of Experimental Medicine
Published
2004-11-15
Volume
200
Issue
10
Pages
1279-1288
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2155011421
Cited by
240
References
51
Citations by year
2026: 1 · 2025: 5 · 2024: 1 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 3 · 2019: 4 · 2018: 7 · 2017: 5 · 2016: 6 · 2015: 11 · 2014: 14 · 2013: 11 · 2012: 20
FWCI
7.55
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Pure Amsterdam UMC (submittedVersion)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (67200, 68785)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Health Sciences › Medicine › Infectious Diseases › HIV/AIDS Research and Interventions
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
DC-SIGN, X4 HIV-1, dendritic cells, HIV transmission, CD4+ T cells, C-type lectin, viral capture, HIV co-receptor, HIV pathogenesis, mucosal HIV transmission
MeSH terms
DC-Specific ICAM-3 Grabbing Nonintegrin, Antibodies, Monoclonal, Binding Sites, Cells, Cultured, Dendritic Cells, Enzyme-Linked Immunosorbent Assay, Flow Cytometry, Genetic Vectors, Humans, Microscopy, Fluorescence, Receptors, Cell Surface, T-Lymphocytes, HIV-1, HIV Infections, Cell Adhesion Molecules, Lentivirus, RNA, Small Interfering, Lectins, C-Type

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