TY - JOUR
T1 - The CD46-Jagged1 interaction is critical for human T(H)1 immunity
AU - Le Friec, Gaelle
AU - Sheppard, Devon
AU - Whiteman, Pat
AU - Karsten, Christian M.
AU - Shamoun, Salley Al-Tilib
AU - Laing, Adam
AU - Bugeon, Laurence
AU - Dallman, Margaret J.
AU - Melchionna, Teresa
AU - Chillakuri, Chandramouli
AU - Smith, Richard A.
AU - Drouet, Christian
AU - Couzi, Lionel
AU - Fremeaux-Bacchi, Veronique
AU - Koehl, Joerg
AU - Waddington, Simon N.
AU - McDonnell, James M.
AU - Baker, Alastair
AU - Handford, Penny A.
AU - Lea, Susan M.
AU - Kemper, Claudia
PY - 2012/12
Y1 - 2012/12
N2 - CD46 is a complement regulator with important roles related to the immune response. CD46 functions as a pathogen receptor and is a potent costimulator for the induction of interferon-gamma (IFN-gamma)-secreting effector T helper type 1 (T(H)1) cells and their subsequent switch into interleukin 10 (IL-10)-producing regulatory T cells. Here we identified the Notch family member Jagged1 as a physiological ligand for CD46. Furthermore, we found that CD46 regulated the expression of Notch receptors and ligands during T cell activation and that disturbance of the CD46-Notch crosstalk impeded induction of IFN-gamma and switching to IL-10. Notably, CD4(+) T cells from CD46-deficient patients and patients with hypomorphic mutations in the gene encoding Jagged1 (Alagille syndrome) failed to mount appropriate T(H)1 responses in vitro and in vivo, which suggested that CD46-Jagged1 crosstalk is responsible for the recurrent infections in subpopulations of these patients.
AB - CD46 is a complement regulator with important roles related to the immune response. CD46 functions as a pathogen receptor and is a potent costimulator for the induction of interferon-gamma (IFN-gamma)-secreting effector T helper type 1 (T(H)1) cells and their subsequent switch into interleukin 10 (IL-10)-producing regulatory T cells. Here we identified the Notch family member Jagged1 as a physiological ligand for CD46. Furthermore, we found that CD46 regulated the expression of Notch receptors and ligands during T cell activation and that disturbance of the CD46-Notch crosstalk impeded induction of IFN-gamma and switching to IL-10. Notably, CD4(+) T cells from CD46-deficient patients and patients with hypomorphic mutations in the gene encoding Jagged1 (Alagille syndrome) failed to mount appropriate T(H)1 responses in vitro and in vivo, which suggested that CD46-Jagged1 crosstalk is responsible for the recurrent infections in subpopulations of these patients.
U2 - 10.1038/ni.2454
DO - 10.1038/ni.2454
M3 - Article
SN - 1529-2908
VL - 13
SP - 1213
EP - 1221
JO - Nature Immunology
JF - Nature Immunology
IS - 12
ER -