TLR signaling and effector functions are intact in XLA neutrophils

Signaling Modulates Cytolytic T Lymphocyte Effector Functions

Cytolytic T cells use two mechanisms to kill virally infected cells, tumor cells, or other potentially autoreactive T cells in short-term in vitro assays. The perforin/granule exocytosis mechanism uses preformed cytolytic granules that are delivered to the target cell to induce apoptosis and eventual lysis. FasL/Fas (CD95 ligand/CD95)–mediated cytolysis requires de novo protein synthesis of Fas...

Neutrophils through Peroxynitrite Signaling in Human Activation of TLR-9 Induces IL-8 Secretion

Roles in TLR Signaling Pathway

TLR signaling pathways.

Toll-like receptors (TLRs) have been established to play an essential role in the activation of innate immunity by recognizing specific patterns of microbial components. TLR signaling pathways arise from intracytoplasmic TIR domains, which are conserved among all TLRs. Recent accumulating evidence has demonstrated that TIR domain-containing adaptors, such as MyD88, TIRAP, and TRIF, modulate TLR...

TLR signaling fine-tunes anti-influenza B cell responses without regulating effector T cell responses.

Influenza is a ssRNA virus that has been responsible for widespread morbidity and mortality; however, the innate immunological mechanisms that drive the adaptive anti-influenza immune response in vivo are yet to be fully elucidated. TLRs are pattern recognition receptors that bind evolutionarily conserved pathogen-associated molecular patterns, induce dendritic cell maturation, and consequently...