Cancer cells induce metastasis-supporting neutrophil extracellular DNA traps.

Cancer cells induce metastasis-supporting neutrophil extracellular DNA traps.
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DOI:
10.1126/scitranslmed.aag1711
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发表时间:
2016-10-19
影响因子:
17.1
通讯作者:
Egeblad M
Egeblad M
中科院分区:
医学1区
文献类型:
--
作者:
Park J;Wysocki RW;Amoozgar Z;Maiorino L;Fein MR;Jorns J;Schott AF;Kinugasa-Katayama Y;Lee Y;Won NH;Nakasone ES;Hearn SA;Küttner V;Qiu J;Almeida AS;Perurena N;Kessenbrock K;Goldberg MS;Egeblad M

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中性粒细胞是血液中最丰富的白细胞类型,可形成中性粒细胞胞外陷阱(NETs)。这些是病原体捕获结构,由中性粒细胞的DNA与相关的蛋白水解酶一起排出而产生。由感染产生的NET可以促进癌症转移。在这里,我们表明,转移性乳腺癌细胞可以诱导中性粒细胞在没有感染的情况下形成支持转移的NET。使用活体成像,我们观察到转移性4 T1癌细胞周围的NET样结构已经到达小鼠的肺部。我们还在三阴性人乳腺癌的临床样本中发现了NET。NET的形成刺激了乳腺癌细胞的体外侵袭和迁移。抑制NET形成或用DNase I消化NET阻断了这些过程。用NET消化的DNA酶I包被的纳米颗粒治疗显著减少了小鼠的肺转移。我们的数据表明,由癌细胞诱导的NET是一种以前未鉴定的促进转移的肿瘤-宿主相互作用和潜在的治疗靶点。
Neutrophils, the most abundant type of leukocytes in blood, can form neutrophil extracellular traps (NETs). These are pathogen-trapping structures generated by expulsion of the neutrophil's DNA with associated proteolytic enzymes. NETs produced by infection can promote cancer metastasis. Here, we show that metastatic breast cancer cells can induce neutrophils to form metastasis-supporting NETs in the absence of infection. Using intravital imaging, we observed NET-like structures around metastatic 4T1 cancer cells that had reached the lungs of mice. We also found NETs in clinical samples of triple-negative human breast cancer. The formation of NETs stimulated the invasion and migration of breast cancer cells in vitro. Inhibiting NET formation or digesting NETs with DNase I blocked these processes. Treatment with NET-digesting, DNase I-coated nanoparticles markedly reduced lung metastases in mice. Our data suggest that induction of NETs by cancer cells is a previously unidentified metastasis-promoting tumor-host interaction and a potential therapeutic target.
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