TRAIL-R as a negative regulator of innate immune cell responses

Gretchen E. Diehl, Herman H. Yue, Kristina Hsieh, Anna A. Kuang, Mary Ho, Lisa A. Morici, Laurel L. Lenz, Dragana Cado, Lee W. Riley, Astar Winoto

Research output: Contribution to journalArticlepeer-review

208 Scopus citations


TRAIL receptor (TRAIL-R) signaling has been implicated in inducing apoptosis in tumor cells, but little is understood about its physiological function. Here, we report the generation and characterization of TRAIL-R -/- mice, which develop normal lymphocyte populations but possess enhanced innate immune responses. TRAIL-R-/- mice exhibited increased clearance of murine cytomegalovirus that correlated with increased levels of IL-12, IFN-α, and IFN-γ. Stimulation of macrophages with Mycobacterium and Toll-like receptor (TLR)-2, -3, and -4, but not TLR9, ligands resulted in high levels of TRAIL upregulation and enhanced cytokine production in TRAIL-R-/- cells. The immediate-early TLR signaling events in TRAIL-R-/- macrophages and dendritic cells are normal, but IκB-α homeostatic regulation and NF-κB activity at later time points is perturbed. These data suggest that TRAIL-R negatively regulates innate immune responses.

Original languageEnglish (US)
Pages (from-to)877-889
Number of pages13
Issue number6
StatePublished - Dec 2004
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Infectious Diseases


Dive into the research topics of 'TRAIL-R as a negative regulator of innate immune cell responses'. Together they form a unique fingerprint.

Cite this