Mouse CD4+ CD25+ T regulatory cells are protected from autologous complement mediated injury by Crry and CD59.

Mouse CD4+ CD25+ T regulatory cells are protected from autologous complement mediated injury by Crry and CD59.
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Crry 和 CD59 保护小鼠 CD4 CD25 T 调节细胞免受自体补体介导的损伤。

DOI:
10.1016/j.bbrc.2009.03.025
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发表时间:
2009-04-24
影响因子:
3.1
通讯作者:
Lin, Feng
Lin, Feng
中科院分区:
生物学4区
文献类型:
--
作者:
Li, Qing;Nacion, Kristine;Bu, Hong;Lin, Feng

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自身细胞依赖于表面补体调节剂来保护它们免受自体补体介导的攻击。CD 4 + CD 25 + foxp 3+调节性T(Treg)细胞在维持免疫稳态中至关重要,然而,其上表达哪些补体调节因子以及如何保护其免受自体补体攻击仍然未知。我们在这里报告说,小鼠Treg细胞几乎不表达CR 1或CR2。相反,所有这些细胞都表达Crry,其中大约一半表达CD 59。Crry-/-和CD 59-/- Treg细胞都表现出比WT Treg细胞更大的补体介导的损伤。这些结果阐明了小鼠Treg细胞上细胞表面补体调节剂的状态,并表明Crry和CD 59都是保护Treg细胞免受自体补体介导的损伤所必需的。此外,这些数据还表明,与先前的假设不同,至少在小鼠中,CD 4 + CD 25 + foxp 3 + Treg细胞不是同质的,并且可以基于CD 59表达进一步分为亚组。
Self cells depend on surface complement regulators to protect them from autologous complement-mediated attack. CD4+CD25+foxp3+ T regulatory (Treg) cells are critical in maintaining immune homeostasis, however, which complement regulators are expressed on them and how they are protected from autologous complement attack remains unknown. We report here that mouse Treg cells express virtually no DAF or CR1. Instead, all of them express Crry and approximately half of them express CD59. Both Crry-/- and CD59-/- Treg cells exhibit greater complement mediated injury than WT Treg cells. These results clarify the status of cell surface complement regulators on mouse Treg cells and indicate that both Crry and CD59 are required to protect Treg cells from autologous complement-mediated injury. Additionally, these data also argue that different from previous assumption, at least in mice, CD4+CD25+foxp3+ Treg cells are not homogenous and could be further divided into subgroups based on CD59 expression.
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