Itm2a, a target gene of GATA-3, plays a minimal role in regulating the development and function of T cells.

Itm2a, a target gene of GATA-3, plays a minimal role in regulating the development and function of T cells.
复制标题

DOI:
10.1371/journal.pone.0096535
复制
发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Ho IC
Ho IC
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tai TS;Pai SY;Ho IC

文献摘要

参考文献

被引文献

相似文献

整合膜蛋白 2a (Itm2a) 是含有 BRICHOS 结构域的蛋白之一,在结构上与 Itm2b 和 Itm2c 相关。它优先在造血细胞的 T 谱系中表达,并由 MHC 介导的正选择诱导。然而,人们对它的转录调控和功能知之甚少。在这里,我们证明 Itm2a 是 T 细胞特异性转录因子 GATA-3 的靶基因。 Itm2a的缺乏对多克隆T细胞的发育和功能几乎没有影响,但导致带有MHC I类限制性TCR(OT-I)的胸腺细胞的发育部分缺陷。此外,Itm2a 缺陷小鼠体内 T 辅助细胞依赖性免疫反应减弱。我们进一步证明 Itm2b 而不是 Itm2c 在 T 细胞中也表达,并且在激活时被诱导,尽管其动力学与 Itm2a 不同。因此,Itm2a 和 Itm2b 之间的功能冗余可以解释 Itm2a 缺陷的最小表型。
The integral membrane protein 2a (Itm2a) is one of the BRICHOS domain-containing proteins and is structurally related to Itm2b and Itm2c. It is expressed preferentially in the T lineage among hematopoietic cells and is induced by MHC-mediated positive selection. However, its transcriptional regulation and function are poorly understood. Here we showed Itm2a to be a target gene of GATA-3, a T cell-specific transcription factor. Deficiency of Itm2a had little impact on the development and function of polyclonal T cells but resulted in a partial defect in the development of thymocytes bearing a MHC class I-restricted TCR, OT-I. In addition, Itm2a-deficient mice displayed an attenuated T helper cell-dependent immune response in vivo. We further demonstrated that Itm2b but not Itm2c was also expressed in T cells, and was induced upon activation, albeit following a kinetic different from that of Itm2a. Thus, functional redundancy between Itm2a and Itm2b may explain the minimal phenotype of Itm2a deficiency.
DOI: 10.1038/nature05478
发表时间: 2007-02-22
期刊: NATURE
影响因子: 64.8
作者:
Marson, Alexander;Kretschmer, Karsten;Young, Richard A.
通讯作者: Young, Richard A.
DOI: 10.1186/1756-0500-2-180
发表时间: 2009-09-11
期刊: BMC research notes
影响因子: 1.8
作者:
Hedlund J;Johansson J;Persson B
通讯作者: Persson B
DOI: 10.1084/jem.20040179
发表时间: 2004-06-07
影响因子: 15.3
作者:
Herman, AE;Freeman, GJ;Benoist, C
通讯作者: Benoist, C
DOI: 10.1038/nature03338
发表时间: 2005-02-24
期刊: NATURE
影响因子: 64.8
作者:
He, X;He, X;Kappes, DJ
通讯作者: Kappes, DJ
DOI: 10.1084/jem.190.2.217
发表时间: 1999-07-19
期刊: The Journal of experimental medicine
影响因子: --
作者:
Kirchner J;Bevan MJ
通讯作者: Bevan MJ