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Follicular helper T (TFH) cells are essential for inducing germinal centre (GC) reactions to mediate humoral adaptive immunity and antiviral effects, but the mechanisms of TFH cell differentiation remain unclear. Here, we found that the hippo kinase MST1 is critical for TFH cell differentiation, GC formation, and antibody production under steady‐state conditions and viral infection. MST1 deficiency...
Distinct metabolic programs support the differentiation of CD4+ T cells into separate functional subsets. In this study, we investigated metabolic mechanisms underlying the differentiation of IL-9-producing CD4+ T cells (Th9) in allergic airway inflammation and cancerous tumors. We found that histone deacetylase SIRT1 negatively regulated Th9 cell differentiation. A deficiency of SIRT1 induced by...
Sirtuins are evolutionarily conserved class III histone deacetylases that have been the focus of intense scrutiny and interest since the discovery of Sir2 as a yeast longevity factor. Early reports demonstrated an important role of Sirt1 in aging and metabolism, but its critical regulatory role in the immune system has only been unveiled in recent years. In this review we discuss the latest advances...
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