A Stk4-Foxp3-NF-?B p65 transcriptional complex promotes Treg cell activation and homeostasis
Küçük Resim Yok
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Amer Assoc Advancement Science
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The molecular programs involved in regulatory T (T-reg) cell activation and homeostasis remain incompletely understood. Here, we show that T cell receptor (TCR) signaling in T-reg cells induces the nuclear translocation of serine/threonine kinase 4 (Stk4), leading to the formation of an Stk4-NF-kappa B p65-Foxp3 complex that regulates Foxp3- and p65-dependent transcriptional programs. This complex was stabilized by Stk4-dependent phosphorylation of Foxp3 on serine-418. Stk4 deficiency in T-reg cells, either alone or in combination with its homolog Stk3, precipitated a fatal autoimmune lymphoproliferative disease in mice characterized by decreased Treg cell p65 expression and nuclear translocation, impaired NF-kappa B p65-Foxp3 complex formation, and defective Treg cell activation. In an adoptive immunotherapy model, overexpression of p65 or the phosphomimetic Foxp3S418E in Stk3/4-deficient T-reg cells ameliorated their immune regulatory defects. Our studies identify Stk4 as an essential TCR-responsive regulator of p65-Foxp3-dependent transcription that promotes T-reg cellmediated immune tolerance.
Açıklama
Anahtar Kelimeler
[Keyword Not Available]
Kaynak
Science Immunology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
7
Sayı
75
