Interferon-Inducible Mechanism of Dendritic Cell-Mediated HIV-1 Dissemination Is Dependent on Siglec-1/CD169
Open accessAbstract
Human immunodeficiency virus type 1 (HIV-1) interactions with myeloid dendritic cells (DCs) can result in virus dissemination to CD4⁺ T cells via a trans infection pathway dependent on virion incorporation of the host cell derived glycosphingolipid (GSL), GM3. The mechanism of DC-mediated trans infection is extremely efficacious and can result in infection of multiple CD4⁺ T cells as these cells make exploratory contacts on the DC surface. While it has long been appreciated that activation of DCs with ligands that induce type I IFN signaling pathway dramatically enhances DC-mediated T cell trans infection, the mechanism by which this occurs has remained unclear until now. Here, we demonstrate that the type I IFN-inducible Siglec-1, CD169, is the DC receptor that captures HIV in a GM3-dependent manner. Selective downregulation of CD169 expression, neutralizing CD169 function, or depletion of GSLs from virions, abrogated DC-mediated HIV-1 capture and trans infection, while exogenous expression of CD169 in receptor-naïve cells rescued GSL-dependent capture and trans infection. HIV-1 particles co-localized with CD169 on DC surface immediately following capture and subsequently within non-lysosomal compartments that redistributed to the DC--T cell infectious synapses upon initiation of T cell contact. Together, these findings describe a novel mechanism of pathogen parasitization of host encoded cellular recognition machinery (GM3--CD169 interaction) for DC-dependent HIV dissemination.
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Siglec-1 is expressed on activated mature DCs and macrophages and binds to GM3 ganglioside in the HIV-1 viral envelope.
“This receptor is expressed on the surface of activated mature DCs and macrophages, and binds to the GM3 ganglioside in the HIV-1 viral envelope [85,86,87].”
From HIV-1 and HTLV-1 Transmission Modes: Mechanisms and Importance for Virus Spread (2022) · cites this paper as [87]
CD169/Siglec-1 mediates uptake and transmission of HIV-1.
“Another molecule that mediates the uptake and transmission of HIV-1 is the type I lectin receptor CD169/sialic acid-binding immunoglobulin-type lectin 1 (Siglec-1).”
From HIV-1 and HTLV-1 Transmission Modes: Mechanisms and Importance for Virus Spread (2022) · cites this paper as [87]
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HIV-1 and HTLV-1 Transmission Modes: Mechanisms and Importance for Virus Spread
Kalinichenko, S., Komkov, D., & Mazurov, D. (2022) · Viruses · doi:10.3390/v14010152 · Cited by 68 · see citing works
- Authors
- Puryear, W. B., Akiyama, H., Geer, S. D., Ramirez, N. P., Yu, X., Reinhard, B. M., & Gummuluru, S.
- Affiliations
- Boston University (US)
- Corresponding author
- Gummuluru, Suryaram
- Venue
- PLoS Pathogens
- Publisher
- Public Library of Science (PLoS)
- Published
- 2013-04-11
- Volume
- 9
- Issue
- 4
- Pages
- e1003291
- ISSN
- 1553-7366 (ISSN-L)
- 1553-7374
- PMC
- PMC3623718
- OpenAlex
- W2044086145
- Cited by
- 181
- References
- 12
- Citations by year
- 2026: 14 · 2025: 12 · 2024: 6 · 2023: 10 · 2022: 18 · 2021: 18 · 2020: 13 · 2019: 17 · 2018: 14 · 2017: 16 · 2016: 13 · 2015: 14 · 2014: 13 · 2013: 3
- FWCI
- 6.58
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- PLoS Pathogens (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Figshare (submittedVersion, cc-by)
- Funders
- Yale University
- Institut National de la Santé et de la Recherche Médicale
- National Institutes of Health (183-H12-5C, gp120, AI064099, CA138509, AI007309)
- National Cancer Institute (R01CA138509, CA138509)
- National Institute of Allergy and Infectious Diseases (R01AI064099, AI064099, F32AI084558, T32AI007309)
- Topics
- Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
- Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
- Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
- Keywords
- HIV-1, dendritic cells, CD169, Siglec-1, type I interferon, trans-infection, viral dissemination, CD4+ T cells, viral capture, myeloid dendritic cells
- MeSH terms
- Animals, Cell Line, Dendritic Cells, G(M3) Ganglioside, Humans, Signal Transduction, CD4-Positive T-Lymphocytes, HIV-1, Down-Regulation, HIV Infections, Interferon-alpha, RNA Interference, Mice, Rats, HEK293 Cells, Sialic Acid Binding Ig-like Lectin 1
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