STAT3-dependent transactivation of miRNA genes following Toxoplasma gondii infection in macrophage.

STAT3-dependent transactivation of miRNA genes following Toxoplasma gondii infection in macrophage.
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巨噬细胞中弓形虫感染后 STAT3 依赖性 miRNA 基因反式激活

DOI:
10.1186/1756-3305-6-356
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发表时间:
2013-12-16
影响因子:
3.2
通讯作者:
Shen J
Shen J
中科院分区:
医学2区
文献类型:
--
作者:
Cai Y;Chen H;Jin L;You Y;Shen J

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顶端复合体寄生虫弓形虫可以感染许多种温血动物的几乎任何有核细胞并在其中复制;弓形虫具有复杂的机制来对抗宿主细胞凋亡,以维持在宿主细胞中的存活和繁殖。利用微阵列分析和传统的分子生物学方法相结合,我们研究了T。弓形虫感染我们使用分子工具来检查弓形虫上调的miRNA,以揭示一个miRNA基因子集的启动子元件中潜在的信号转导子和转录激活子3(STAT3)结合位点。我们通过流式细胞术分析了STAT3结合miRNA的功能抑制对人巨噬细胞凋亡的影响。我们的研究结果表明,T.弓形虫感染弓形虫上调的miRNA的数据库分析揭示了潜在的STAT3结合位点在一个子集的miRNA基因的启动子元件。我们证明了miR-30 c-1、miR-125 b-2、miR-23 b-27 b-24 - 1和miR-17~92簇基因在T.弓形虫感染重要的是,在人巨噬细胞中选择的STAT3结合miRNA的功能抑制增加了宿主细胞的凋亡。在人巨噬细胞中,一组miRNAs通过与STAT3的启动子结合来调节,并且这些miRNAs参与响应于T.弓形虫感染
The apicomplexan parasite Toxoplasma gondii can infect and replicate in virtually any nucleated cell in many species of warm-blooded animals; T. gondii has elaborate mechanisms to counteract host-cell apoptosis in order to maintain survival and breed in the host cells. Using microarray profiling and a combination of conventional molecular approaches, we investigated the levels of microRNAs (miRNAs ) in human macrophage during T. gondii infection. We used molecular tools to examine Toxoplasma-upregualted miRNAs to revealed potential signal transducers and activators of transcription 3(STAT3) binding sites in the promoter elements of a subset of miRNA genes. We analysed the apoptosis of human macrophage with the functional inhibition of the STAT3-binding miRNAs by flow cytometry. Our results demonstrated differential alterations in the mature miRNA expression profile in human macrophage following T. gondii infection. Database analysis of Toxoplasma-upregulated miRNAs revealed potential STAT3 binding sites in the promoter elements of a subset of miRNA genes. We demonstrated that miR-30c-1, miR-125b-2, miR-23b-27b-24-1 and miR-17 ~ 92 cluster genes were transactivated through promoter binding of the STAT3 following T. gondii infection. Importantly, functional inhibition of selected STAT3-binding miRNAs in human macropahges increased apoptosis of host cells. A panel of miRNAs is regulated through promoter binding of the STAT3 in human macrophage and these miRNAs are involved in anti-apoptosis in response to T. gondii infection.
DOI: 10.1371/journal.pone.0053483
发表时间: 2013
期刊: PloS one
影响因子: 3.7
作者:
Wang L;Chen H;Liu D;Huo X;Gao J;Song X;Xu X;Huang K;Liu W;Wang Y;Lu F;Lun ZR;Luo Q;Wang X;Shen J
通讯作者: Shen J
弓形虫感染后巨噬细胞中 SERPIN B3 和 B4 通过 STAT6 激活的抗凋亡作用。
DOI: 10.3347/kjp.2012.50.1.1
发表时间: 2012-03
期刊: The Korean journal of parasitology
影响因子: --
作者:
Song KJ;Ahn HJ;Nam HW
通讯作者: Nam HW
DOI: 10.1371/journal.pone.0004034
发表时间: 2008
期刊: PloS one
影响因子: 3.7
作者:
Xue X;Sun J;Zhang Q;Wang Z;Huang Y;Pan W
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DOI: 10.1016/s0960-0760(02)00065-1
发表时间: 2002-07-01
影响因子: 4.1
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Kramer, PR;Wray, S
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DOI: 10.1038/nature05395
发表时间: 2007-01-18
期刊: NATURE
影响因子: 64.8
作者:
Saeij, J. P. J.;Coller, S.;Boothroyd, J. C.
通讯作者: Boothroyd, J. C.