English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The ectoenzymes CD39 and CD73 degrade extracellular ATP to adenosine. ATP is released by stressed or damaged cells and provides pro-inflammatory signals to immune cells through P2 receptors. Adenosine, on the other hand, suppresses immune cells by stimulating P1 receptors. Thus, CD39 and CD73 can shape the quality of immune responses. Here we demonstrate that upregulation of CD39 is a consistent feature of activated conventional CD4 +  and CD8 +  T cells. Following stimulation  in vitro , CD4 +  and CD8 +  T cells from human blood gained surface expression of CD39 but displayed only low levels of CD73. Activated human T cells from inflamed joints largely presented with a CD39 + CD73 —  phenotype. In line, in spleens of mice with acute  Listeria monocytogenes , listeria-specific CD4 +  and CD8 +  T cells acquired a CD39 + CD73 —  phenotype. To test the function of CD39 in control of bacterial infection, CD39-deficient (CD39 -/- ) mice were infected with  L .  monocytogenes . CD39 -/-  mice showed better initial control of  L .  monocytogenes , which was associated with enhanced production of inflammatory cytokines. In the late stage of infection, CD39 -/-  mice accumulated more listeria-specific CD8 +  T cells in the spleen than wildtype animals suggesting that CD39 attenuates the CD8 +  T-cell response to infection. In conclusion, our results demonstrate that CD39 is upregulated on conventional CD4 +  and CD8 +  T cells at sites of acute infection and inflammation, and that CD39 dampens responses to bacterial infection.

CD39 is upregulated during activation of mouse and human T cells and attenuates the immune response to Listeria monocytogenes