RelB/p50 regulates CCL19 production, but fails to promote human DC maturation

Production of Bystander Dendritic Cells but Not IL-12 Newly Activated T Cells Promote Maturation

Monovalent ligation of the B cell receptor induces receptor activation but fails to promote antigen presentation.

We explored the role of antigen valency in B cell receptor (BCR) activation and rearrangement of intracellular MHC class II compartments as factors that contribute to the efficacy of antigen presentation. Using primary B cells that express a hen egg lysozyme (HEL)-specific BCR, we found that oligomeric HEL more efficiently promoted both BCR activation and internalization than did monovalent HEL...

Caspase Inhibition Blocks Cell Death and Enhances Mitophagy but Fails to Promote T-Cell Lymphoma

Caspase-9 is a component of the apoptosome that mediates cell death following release of cytochrome c from mitochondria. Inhibition of Caspase-9 with a dominant negative construct (Casp9DN) blocks apoptosome function, promotes viability and has been implicated in carcinogenesis. Inhibition of the apoptosome in vitro impairs mitochondrial function and promotes mitophagy. To examine whether inhib...

Sexual selection fails to promote adaptation to a new environment.

Selection can be divided into sexual and nonsexual components. Some work finds that a component of sexual selection, adaptive female selection for good genes, can promote nonsexual fitness. Less studied is the benefit from sexual selection in toto, that is, when intra- and intersexual selection are both present and able to affect females directly and indirectly. Here an upper bound for the net ...

IL-18-based combinatorial adjuvants promote the NK-DC-mediated production of the CCR7 ligand CCL19 in lymph nodes from cancer patients

Effective accumulation and interaction of mature dendritic cells (DCs) and naïve T cells within lymph nodes (LNs), driven by the CCR7-CCL19/CCL21 axis, are critical for the induction of adaptive T cell immunity. Human natural killer (NK) cells activated by IL-18 exhibit unique ‘helper’ activity in promoting productive DC-T cell interactions, inducing dendritic cell (DC) maturation and the type-...