作者: F. P. Siegal
DOI: 10.1126/SCIENCE.284.5421.1835
关键词:
摘要: Interferons (IFNs) are the most important cytokines in antiviral immune responses. “Natural IFN-producing cells” (IPCs) human blood express CD4 and major histocompatibility complex class II proteins, but have not been isolated further characterized because of their rarity, rapid apoptosis, lack lineage markers. Purified IPCs here shown to be CD4+CD11c− type 2 dendritic cell precursors (pDC2s), which produce 200 1000 times more IFN than other cells after microbial challenge. pDC2s thus an effector system, critical for antitumor