Protein kinase Cδ, a kinase downstream of B-cell antigen receptor, is found to be essential for class switching to and production of IgG in the T-cell-independent type 2 immune response and for regulation of gut-residing bacteria.
Marisa Stebegg, Alexandre Bignon ... Michelle A Linterman
Older individuals have impaired conventional dendritic cell and T follicular helper cell formation upon vaccination, which can be rescued by treatment with a TLR7 agonist.
Tumor-induced myeloid-derived suppressor cells exert systemic suppression of adaptive immunity by limiting L-selectin-directed trafficking of T cells at vascular checkpoints in lymph nodes.
ICOSL-dependent T-cell co-stimulation contributes to the host defense against herpesvirus infections, and accordingly, these pathogens have developed immune evasion mechanisms to interrupt the ICOSL:ICOS signaling pathway.
HLA-B*35:01 molecules that are peptide-deficient are thermostable, bind CD8 with higher affinity than their peptide-filled versions, accumulate at immunological synapses and enhance antigen-specific CD8+ T cell immune responses.
Ting-ting Zhang, David G Gonzalez ... Ann M Haberman
CD40 signaling is necessary to generate the immediate precursors of GC B cells, transition to the BCL6hi follicular state is promoted by a regional and transient diminution of T cell help.
IFNγ increases the responsiveness of human B cells to IL-2, TLR7/8 and IL-21 signals and therefore enhances antibody production in inflammatory settings associated with autoimmune or chronic disease.