Choline acetyltransferase-expressing T cells are required to control chronic viral infection.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 30733420.
- Also identified by DOI 10.1126/science.aau9072 and PMC identifier 7181845.
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Abstract
Although widely studied as a neurotransmitter, T cell-derived acetylcholine (ACh) has recently been reported to play an important role in regulating immunity. However, the role of lymphocyte-derived ACh in viral infection is unknown. Here, we show that the enzyme choline acetyltransferase (ChAT), which catalyzes the rate-limiting step of ACh production, is robustly induced in both CD4<sup>+</sup> and CD8<sup>+</sup> T cells during lymphocytic choriomeningitis virus (LCMV) infection in an IL-21-dependent manner. Deletion of <i>Chat</i> within the T cell compartment in mice ablated vasodilation in response to infection, impaired the migration of antiviral T cells into infected tissues, and ultimately compromised the control of chronic LCMV clone 13 infection. Our results reveal a genetic proof of function for ChAT in T cells during viral infection and identify a pathway of T cell migration that sustains antiviral immunity.
Medical subject headings
- CD8-Positive T-Lymphocytes
- Choline O-Acetyltransferase
- Interleukins
- Lymphocytic Choriomeningitis