Cited by 50Immunotherapy and Immune ResponsesPhagocytosis and Immune RegulationImmune Response and Inflammation

Triggering of Dendritic Cell Responses after Exposure to Activated, but Not Resting, Apoptotic PBMCs

Johansson, Ulrika, Walther-Jallow, Lilian, Smed-Sörensen, Anna, Spetz, Anna-Lena·2007·The Journal of Immunology

Abstract

Dendritic cells (DCs) can be activated by signaling via pathogen receptors, by interaction with activated T cells or by exposure to inflammatory mediators. Clearance of apoptotic cells by DCs is generally considered a silent event that is not associated with an inflammatory response. Necrotic cell death, in contrast, leads to induction of inflammation. However, emerging data challenge the view of apoptotic cells as inherently nonimmunogenic. In this study, we report that the activation state of the apoptotic cell may determine whether the exposed DC becomes activated and rendered proficient in Ag presentation. We show that coculture with activated, but not resting, apoptotic PBMCs leads to up-regulation of surface expression of the costimulatory molecules CD80, CD83, and CD86 in human DCs as well as release of proinflammatory cytokines. Furthermore, we show that DCs exposed to allogeneic, activated apoptotic PBMCs induce proliferation and IFN-γ production in autologous T cells. Together, these findings show that activated apoptotic PBMCs per se provide an activation/maturation signal to DCs, suggesting that activated apoptotic PBMCs possess endogenous adjuvant properties.

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Crossref · 10.4049/jimmunol.179.3.1711

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74 of 74 references verified0 citation errors · 0 not checkable

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  • T cells that succumb to activation-induced cell death promote tolerance through stimulation of regulatory CD8+ T cells.

    “An interesting contrast is with the effect of T cells that succumb to activation-induced cell death, which promote tolerance through the stimulation of regulatory CD8+ T cells30.”

    From Immunogenic and tolerogenic cell death (2009) · cites this paper as [30]

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Authors
Johansson, U., Walther-Jallow, L., Smed-Sörensen, A., & Spetz, A.-L.
Affiliations
  • Karolinska University Hospital (SE)
  • Department of Medicine, Center for Infectious Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge , Stockholm ,
Venue
The Journal of Immunology
Published
2007-08-01
Volume
179
Issue
3
Pages
1711-1720
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1525166884
Cited by
50
References
73
Citations by year
2023: 1 · 2022: 3 · 2020: 1 · 2019: 2 · 2017: 1 · 2016: 1 · 2015: 2 · 2014: 7 · 2013: 5 · 2012: 4
FWCI
2.34
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
dendritic cell activation, apoptotic cells, dendritic cell maturation, costimulatory molecules, CD80, CD83, CD86, inflammatory cytokines, T cell proliferation, interferon-gamma, allogeneic cells, antigen presentation, necrosis
MeSH terms
Cell Differentiation, Cell-Free System, Cells, Cultured, Dendritic Cells, Humans, Interferon-gamma, Isoantigens, Leukocytes, Mononuclear, Monocytes, Necrosis, Phagocytosis, T-Lymphocyte Subsets, Resting Phase, Cell Cycle, Apoptosis, Coculture Techniques, Cell Proliferation

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