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Details

Autor(en) / Beteiligte
Titel
CEACAM1 promotes CD8 + T cell responses and improves control of a chronic viral infection
Ist Teil von
  • Nature communications, 2018-07, Vol.9 (1), p.2561-14, Article 2561
Ort / Verlag
England: Nature Publishing Group
Erscheinungsjahr
2018
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
  • Dysfunction of CD8 T cells can lead to the development of chronic viral infection. Identifying mechanisms responsible for such T cell dysfunction is therefore of great importance to understand how to prevent persistent viral infection. Here we show using lymphocytic choriomeningitis virus (LCMV) infection that carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) is fundamental for recruiting lymphocyte-specific protein kinase (Lck) into the T cell receptor complex to form an efficient immunological synapse. CEACAM1 is essential for activation of CD8 T cells, and the absence of CEACAM1 on virus-specific CD8 T cells limits the antiviral CD8 T cell response. Treatment with anti-CEACAM1 antibody stabilizes Lck in the immunological synapse, prevents CD8 T cell exhaustion, and improves control of virus infection in vivo. Treatment of human virus-specific CD8 T cells with anti-CEACAM1 antibody similarly enhances their proliferation. We conclude that CEACAM1 is an important regulator of virus-specific CD8 T cell functions in mice and humans and represents a promising therapeutic target for modulating CD8 T cells.

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