Histone deacetylase inhibitor Trichostatin A reduces anti-DNA autoantibody production and represses IgH gene transcription.

Histone deacetylase inhibitor Trichostatin A reduces anti-DNA autoantibody production and represses IgH gene transcription.
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组蛋白脱乙酰酶抑制剂 Trichostatin A 可减少抗 DNA 自身抗体的产生并抑制 IgH 基因转录。

DOI:
10.1016/j.bbrc.2005.02.147
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发表时间:
2005
影响因子:
3.1
通讯作者:
Jian Sun
Jian Sun
中科院分区:
生物学4区
文献类型:
--
作者:
Zhong Lu;Zhongliang Ju;Guangbin Shi;Jing Zhang;Jian Sun

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Systemic lupus erythematosus is characterized by the presence of autoantibodies and hypergammaglobulinemia. To investigate the role of histone deacetylases (HDACs) in the production of autoantibody and immunoglobulin, we examined the effect of Trichostatin A (TSA), a specific inhibitor of HDACs, on anti-DNA autoantibody production and IgH gene transcription. Our results showed that inhibition of HDAC activity by TSA markedly reduced anti-DNA autoantibody production by T347 cells either by inducing apoptosis or in an apoptosis-independent manner, suggesting that TSA might be useful for treating certain autoimmune diseases. Moreover, we found that TSA strongly inhibited germline and post-switch immunoglobulin transcripts in T347 cells and in primary splenic B cells of MRL-lpr mice. Reporter gene analysis demonstrated that both Eμ and 3′-IgH enhancer activities were repressed significantly by TSA-mediated HDAC inhibition. Furthermore, we observed that HDAC1 was recruited to the 3′-IgH enhancer hs1,2 as determined by chromatin immunoprecipitation assays. Over-expression of HDAC1 increased the activity of IgH enhancers, especially 3′-IgH enhancers. These findings implicate HDAC in the IgH gene transcription via activation of 3′-IgH enhancers.
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