The origin and properties of extracellular DNA: from PAMP to DAMP.
The origin and properties of extracellular DNA: from PAMP to DAMP.
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DOI:
10.1016/j.clim.2012.04.006
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发表时间:
2012-07
期刊:
影响因子:
--
通讯作者:
Pisetsky DS
中科院分区:
文献类型:
--
作者:
Pisetsky DS
DNA is a polymeric macromolecule whose biological activities depend on location as well as binding to associated molecules. Inside the cell, DNA is the source of genetic information and binds histones to form nucleosomes. DNA can exit the cell, however, to enter the extracellular space primarily during cell death, either apoptosis or necrosis, as well as NETosis. While bacterial DNA is a potent immune stimulant by virtue of its CpG motifs, mammalian DNA, which is ordinarily inactive, can acquire activity by associating with nuclear, cytoplasmic and serum proteins which promote its uptake into cells to stimulate internal DNA sensors, including toll-like receptor 9. Among these proteins, anti-DNA autoantibodies can form immune complexes with DNA to stimulate plasmacytoid dendritic cells to produce type 1 interferon. Together, these findings suggest that the immune properties of DNA are mutable and diverse, reflecting its context and the array of attached molecules.
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发表时间:
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