Zinc finger protein tristetraprolin interacts with CCL3 mRNA and regulates tissue inflammation.

Zinc finger protein tristetraprolin interacts with CCL3 mRNA and regulates tissue inflammation.
复制标题

DOI:
10.4049/jimmunol.1101149
复制
发表时间:
2011-09-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Hwang PM
Hwang PM
中科院分区:
其他
文献类型:
--
作者:
Kang JG;Amar MJ;Remaley AT;Kwon J;Blackshear PJ;Wang PY;Hwang PM

文献摘要

参考文献

被引文献

相似文献

锌指蛋白tristetraprolin(TTP)通过破坏细胞因子mRNA的稳定来调节巨噬细胞的炎症活性。在这里,通过在活化的人巨噬细胞中筛选TTP结合的mRNA,我们已经鉴定了CC趋化因子配体3(CCL 3)mRNA作为最丰富的结合TTP靶mRNA,并通过保守的富含AU的元件表征了这种相互作用。与野生型细胞相比,TTP−/−巨噬细胞产生更高水平的LPS诱导的CCL 3。此外,TTP−/−小鼠的血浆CCL 3水平明显高于野生型小鼠。为了确定TTP调节的CCL 3的体内意义,我们产生了CCL 3 −/− TTP−/−双敲除小鼠。沿着爪关节中促炎细胞因子的减少,当CCL 3不存在时,TTP−/−小鼠的炎性关节炎的功能和组织学显著改善,尽管反映全身炎症的恶病质明显不受影响。此外,在APOE−/−小鼠动脉粥样硬化模型中,TTP缺乏引起的主动脉斑块形成的显著恶化也可以通过破坏CCL 3来挽救。总之,我们的数据表明,TTP和CCL 3 mRNA之间的相互作用在调节与慢性炎症的全身表现分离的组织中的局部炎症过程中起着重要作用。
Zinc finger protein tristetraprolin (TTP) modulates macrophage inflammatory activity by destabilizing cytokine mRNAs. Here, through a screen of TTP-bound mRNAs in activated human macrophages, we have identified CC chemokine ligand 3 (CCL3) mRNA as the most abundantly bound TTP target mRNA and have characterized this interaction via conserved AU-rich elements. Compared to the wild-type cells, TTP−/− macrophages produced higher levels of LPS-induced CCL3. In addition, the plasma level of CCL3 in TTP−/− mice was markedly higher than that in wild-type mice. To determine the in vivo significance of TTP-regulated CCL3, we generated CCL3−/− TTP−/− double knockout mice. Along with decreased proinflammatory cytokines in their paw joints, there were significant functional and histologic improvements in the inflammatory arthritis of TTP−/− mice when CCL3 was absent although cachexia, reflecting systemic inflammation, was notably unaffected. Furthermore, the marked exacerbation of aortic plaque formation caused by TTP deficiency in the APOE−/− mouse model of atherosclerosis was also rescued by disrupting CCL3. Taken together, our data indicate that the interaction between TTP and CCL3 mRNA plays an important role in modulating localized inflammatory processes in tissues that are dissociated from the systemic manifestations of chronic inflammation.
DOI: 10.1016/j.bbrc.2006.05.093
发表时间: 2006-07-21
影响因子: 3.1
作者:
Chen, Yu-Ling;Huang, Ya-Lin;Chang, Ching-Jin
通讯作者: Chang, Ching-Jin
DOI: 10.1016/j.biocel.2003.10.019
发表时间: 2004-10-01
影响因子: 4
作者:
Maurer, M;von Stebut, E
通讯作者: von Stebut, E
DOI: 10.1186/ar1441
发表时间: 2004
影响因子: 4.9
作者:
Carrick DM;Lai WS;Blackshear PJ
通讯作者: Blackshear PJ
DOI: 10.1016/j.jacc.2009.09.009
发表时间: 2009-12-01
影响因子: 24
作者:
Libby, Peter;Ridker, Paul M.;Hansson, Goran K.
通讯作者: Hansson, Goran K.
DOI: 10.1038/ni.1699
发表时间: 2009-03
期刊: Nature immunology
影响因子: 30.5
作者:
通讯作者: --