Neutrophil extracellular traps license macrophages for cytokine production in atherosclerosis

American Association for the Advancement of Science (AAAS) - Tập 349 Số 6245 - Trang 316-320 - 2015
Annika Warnatsch1, Μαριάννα Ιωάννου1, Qian Wang1, Venizelos Papayannopoulos1
1Mill Hill Laboratory, Francis Crick Institute, London NW7 1AA, UK.

Tóm tắt

Neutrophil NETs drive atherosclerosis The buildup of fats, cholesterol, and other substances in arteries causes atherosclerosis, which restricts blood flow and can lead to heart attacks and stroke. Inflammation contributes to the pathogenesis of atherosclerosis, but exactly how is not fully understood. Warnatsch et al. now show that immune cells called neutrophils release NETs (neutrophil extracellular traps) (see the Perspective by Nahrendorf and Swirski). These NETs are composed of DNA and antimicrobial proteins, and in the setting of atherosclerosis they activate innate immune signaling pathways in macrophages. This causes the macrophages to secrete proinflammatory cytokines, exacerbating the disease. Indirectly, NETS also attract a specialized subset of T cells that further amplify the proinflammatory response. Science , this issue p. 316 ; see also p. 237

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