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Antigen presentation capacity and cytokine production by murine splenic dendritic cell subsets upon Salmonella encounter.

Yrlid, Ulf and Wick, Mary Jo LU (2002) In Journal of Immunology 169(1). p.108-116
Abstract
Salmonella typhimurium is an intracellular bacterium that replicates in the spleen and mesenteric lymph nodes (MLN) of orally infected mice. However, little is known about the Ag presentation and cytokine production capacity of dendritic cells (DC), particularly CD8alpha(+), CD8alpha(-)CD4(-), and CD8alpha(-)CD4(+) DC, from these organs in response to SALMONELLA: Infection of purified splenic DC with S. typhimiurium expressing green fluorescent protein (GFP) and OVA revealed that all three splenic DC subsets internalize bacteria, and splenic as well as MLN DC process Salmonella for peptide presentation. Furthermore, presentation of Salmonella Ags on MHC-I and MHC-II was evident in both CD8alpha(+) and CD8alpha(-) splenic DC subsets. Direct... (More)
Salmonella typhimurium is an intracellular bacterium that replicates in the spleen and mesenteric lymph nodes (MLN) of orally infected mice. However, little is known about the Ag presentation and cytokine production capacity of dendritic cells (DC), particularly CD8alpha(+), CD8alpha(-)CD4(-), and CD8alpha(-)CD4(+) DC, from these organs in response to SALMONELLA: Infection of purified splenic DC with S. typhimiurium expressing green fluorescent protein (GFP) and OVA revealed that all three splenic DC subsets internalize bacteria, and splenic as well as MLN DC process Salmonella for peptide presentation. Furthermore, presentation of Salmonella Ags on MHC-I and MHC-II was evident in both CD8alpha(+) and CD8alpha(-) splenic DC subsets. Direct ex vivo analysis of splenic DC from mice infected with GFP-expressing Salmonella showed that all three subsets harbored bacteria, and splenic DC purified from mice given Salmonella-expressing OVA presented OVA-derived peptides on MHC-I and MHC-II. Cytokine production analyzed by intracellular staining of splenic DC infected with GFP-expressing Salmonella revealed that TNF-alpha was produced by a large percentage of CD8alpha(-) DC, while only a minor proportion of CD8alpha(+) DC produced this cytokine following bacterial exposure. In contrast, the greatest number of IL-12p40-producing DC were among CD8alpha(+) DC. Experiments inhibiting bacterial uptake by cytochalasin D as well as use of a Transwell system revealed that bacterial contact, but not internalization, was required for cytokine production. Thus, DC in sites of Salmonella replication and T cell activation, spleen and MLN, respond to bacterial encounter by Ag presentation and produce cytokines in a subset-specific fashion. (Less)
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Cytokines : biosynthesis, Coculture, Flow Cytometry, H-2 Antigens : immunology, H-2 Antigens : metabolism, Lymph Nodes : immunology, Lymph Nodes : cytology, Histocompatibility Antigens Class II : metabolism, Histocompatibility Antigens Class II : immunology, Lymph Nodes : microbiology, Mesentery, Mice, Inbred BALB C, Inbred C3H, Inbred C57BL, Transgenic, Salmonella Infections, Phagocytosis : immunology, Peptide Fragments : metabolism, Peptide Fragments : immunology, Animal : immunology, Salmonella typhimurium : growth & development, Salmonella typhimurium : immunology, Spleen : cytology, Spleen : immunology, Spleen : metabolism, Spleen : microbiology, Dendritic Cells : immunology, Dendritic Cells : metabolism, Dendritic Cells : microbiology, Cultured, Cells, CD8 : biosynthesis, Antigens, Bacterial : metabolism, Bacterial : immunology, Animal, Antigen Presentation
in
Journal of Immunology
volume
169
issue
1
pages
108 - 116
publisher
American Association of Immunologists
external identifiers
  • wos:000176360400016
  • pmid:12077235
  • scopus:0036644293
ISSN
1550-6606
language
English
LU publication?
yes
id
ee804f16-ba3d-4afe-b71d-40765b76bcfb (old id 108940)
alternative location
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12077235&dopt=Abstract
date added to LUP
2007-07-20 10:51:24
date last changed
2017-01-01 06:47:10
@article{ee804f16-ba3d-4afe-b71d-40765b76bcfb,
  abstract     = {Salmonella typhimurium is an intracellular bacterium that replicates in the spleen and mesenteric lymph nodes (MLN) of orally infected mice. However, little is known about the Ag presentation and cytokine production capacity of dendritic cells (DC), particularly CD8alpha(+), CD8alpha(-)CD4(-), and CD8alpha(-)CD4(+) DC, from these organs in response to SALMONELLA: Infection of purified splenic DC with S. typhimiurium expressing green fluorescent protein (GFP) and OVA revealed that all three splenic DC subsets internalize bacteria, and splenic as well as MLN DC process Salmonella for peptide presentation. Furthermore, presentation of Salmonella Ags on MHC-I and MHC-II was evident in both CD8alpha(+) and CD8alpha(-) splenic DC subsets. Direct ex vivo analysis of splenic DC from mice infected with GFP-expressing Salmonella showed that all three subsets harbored bacteria, and splenic DC purified from mice given Salmonella-expressing OVA presented OVA-derived peptides on MHC-I and MHC-II. Cytokine production analyzed by intracellular staining of splenic DC infected with GFP-expressing Salmonella revealed that TNF-alpha was produced by a large percentage of CD8alpha(-) DC, while only a minor proportion of CD8alpha(+) DC produced this cytokine following bacterial exposure. In contrast, the greatest number of IL-12p40-producing DC were among CD8alpha(+) DC. Experiments inhibiting bacterial uptake by cytochalasin D as well as use of a Transwell system revealed that bacterial contact, but not internalization, was required for cytokine production. Thus, DC in sites of Salmonella replication and T cell activation, spleen and MLN, respond to bacterial encounter by Ag presentation and produce cytokines in a subset-specific fashion.},
  author       = {Yrlid, Ulf and Wick, Mary Jo},
  issn         = {1550-6606},
  keyword      = {Cytokines : biosynthesis,Coculture,Flow Cytometry,H-2 Antigens : immunology,H-2 Antigens : metabolism,Lymph Nodes : immunology,Lymph Nodes : cytology,Histocompatibility Antigens Class II : metabolism,Histocompatibility Antigens Class II : immunology,Lymph Nodes : microbiology,Mesentery,Mice,Inbred BALB C,Inbred C3H,Inbred C57BL,Transgenic,Salmonella Infections,Phagocytosis : immunology,Peptide Fragments : metabolism,Peptide Fragments : immunology,Animal : immunology,Salmonella typhimurium : growth & development,Salmonella typhimurium : immunology,Spleen : cytology,Spleen : immunology,Spleen : metabolism,Spleen : microbiology,Dendritic Cells : immunology,Dendritic Cells : metabolism,Dendritic Cells : microbiology,Cultured,Cells,CD8 : biosynthesis,Antigens,Bacterial : metabolism,Bacterial : immunology,Animal,Antigen Presentation},
  language     = {eng},
  number       = {1},
  pages        = {108--116},
  publisher    = {American Association of Immunologists},
  series       = {Journal of Immunology},
  title        = {Antigen presentation capacity and cytokine production by murine splenic dendritic cell subsets upon Salmonella encounter.},
  volume       = {169},
  year         = {2002},
}