Dynamics of neutrophil migration in lymph nodes during infection.

Dynamics of neutrophil migration in lymph nodes during infection.
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感染期间淋巴结中中性粒细胞迁移的动态。

DOI:
10.1016/j.immuni.2008.07.012
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发表时间:
2008-09-19
期刊:
影响因子:
32.4
通讯作者:
Robey, Ellen A.
Robey, Ellen A.
中科院分区:
医学1区
文献类型:
--
作者:
Chtanova, Tatyana;Schaeffer, Marie;Han, Seong-Ji;van Dooren, Giel G.;Nollmann, Marcelo;Herzmark, Paul;Chan, Shiao Wei;Satija, Harshita;Camfield, Kristin;Aaron, Holly;Striepen, Boris;Robey, Ellen A.

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虽然控制中性粒细胞从血液迁移到感染部位的信号已得到很好的表征,但对于它们在淋巴结内的迁移模式,以及中性粒细胞用于找到其局部作用部位的策略知之甚少。为了解决这些问题,我们使用双光子扫描激光显微镜(TPSLM)来检查在感染细胞内寄生虫刚地弓形虫期间完整淋巴结中的中性粒细胞迁移。我们发现中性粒细胞通过一种惊人的协同迁移模式形成小型、短暂的或大型、持久的群体。我们提供的证据表明,中性粒细胞的协同作用以及寄生虫从宿主细胞中逸出可触发群体形成。中性粒细胞群体的形成在空间和时间上与清除位于淋巴结被膜下窦的巨噬细胞相吻合。我们的数据为中性粒细胞群聚的细胞机制提供了见解,并提示了中性粒细胞在塑造免疫应答中的新作用。
While the signals that control neutrophil migration from the blood to sites of infection have been well characterized, little is known about their migration patterns within lymph nodes, or the strategies that neutrophils use to find their local sites of action. To address these questions, we used two-photon scanning laser microscopy (TPSLM) to examine neutrophil migration in intact lymph nodes during infection with an intracellular parasite, Toxoplasma gondii. We find that neutrophils form both small, transient or large, persistent swarms via a strikingly coordinated migration pattern. We provide evidence that cooperative action of neutrophils and parasite egress from host cells can trigger swarm formation. Neutrophil swarm formation coincides in space and time with the removal of macrophages that line the subcapsular sinus of the lymph node. Our data provide insights into the cellular mechanisms underlying neutrophil swarming and suggest new roles for neutrophils in shaping immune responses.
DOI: 10.1038/nm1603
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