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Articles by I. H Choi
Total Records ( 1 ) for I. H Choi
  S Yao , S Wang , Y Zhu , L Luo , G Zhu , S Flies , H Xu , W Ruff , M Broadwater , I. H Choi , K Tamada and L. Chen
 

Programmed death one (PD-1) is an inducible molecule belonging to the immunoglobulin superfamily. It is expressed on activated T and B lymphocytes and plays pivotal roles in the negative regulation of adaptive immune responses. We report here an unexpected finding: that PD-1 could also be induced on splenic dendritic cells (DCs) by various inflammatory stimuli. Adoptive transfer of PD-1–deficient DCs demonstrates their superior capacity to wild-type DCs in innate protection of mice against lethal infection by Listeria monocytogenes. Furthermore, PD-1–deficient mice are also more resistant to the infection than wild-type controls, even in the absence of T and B cells, accompanied by elevated production of DC-derived interleukin-12 and tumor necrosis factor-. Our results reveal a novel role of PD-1 in the negative regulation of DC function during innate immune response.

 
 
 
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