Cutting Edge: Local Proliferation of Uterine Tissue-Resident NK Cells during Decidualization in Mice.

Cutting Edge: Local Proliferation of Uterine Tissue-Resident NK Cells during Decidualization in Mice.
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DOI:
10.4049/jimmunol.1800651
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发表时间:
2018-11-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Yokoyama WM
Yokoyama WM
中科院分区:
其他
文献类型:
--
作者:
Sojka DK;Yang L;Plougastel-Douglas B;Higuchi DA;Croy BA;Yokoyama WM

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自然杀伤(NK)细胞在生理、病理或实验诱导的蜕膜化过程中在成年小鼠和人子宫中积累。连续转移研究表明,子宫NK(uNK)细胞来自循环祖细胞。然而,处女子宫含有很少的循环NK1.1+ CD 49 a −常规NK(cNK)细胞,而NK1.1+ CD 49 a+组织驻留NK(trNK)细胞丰富。在这里,我们采用了一种新的,免疫能力的NK细胞特异性报告小鼠,以跟踪积累的uNK细胞在未经处理的怀孕。我们发现cNK和trNK细胞在基底蜕膜(DB)和子宫肌层中积累。只有trNK细胞显示出增殖的证据。在使用实验诱导的蜕膜瘤的共生研究中,积累的uNK细胞正在增殖trNK细胞;迁移的NK细胞没有做出贡献。总之,这些数据表明增殖的trNK细胞是子宫内膜蜕膜化过程中uNK细胞的来源。
Natural killer (NK) cells accumulate in adult murine and human uteri during decidualization induced physiologically, pathologically or experimentally. Adoptive transfer studies indicate that uterine NK (uNK) cells arise from circulating progenitors. However, virgin uteri contain few circulating NK1.1+CD49a− conventional NK (cNK) cells while NK1.1+CD49a+ tissue-resident NK (trNK) cells are abundant. Here, we employed a novel, immune competent NK cell-specific reporter mouse to track accumulation of uNK cells during unmanipulated pregnancies. We identified cNK and trNK cells accumulating in both decidua basalis (DB) and myometrium. Only trNK cells showed evidence of proliferation. In parabiosis studies using experimentally-induced deciduomata, the accumulated uNK cells were proliferating trNK cells; migrating NK cells made no contribution. Together, these data suggest proliferating trNK cells are the source of uNK cells during endometrial decidualization.
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