Proviral silencing in embryonic cells is regulated by Yin Yang 1.
Proviral silencing in embryonic cells is regulated by Yin Yang 1.
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DOI:
10.1016/j.celrep.2013.06.003
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发表时间:
2013-07-11
期刊:
影响因子:
8.8
通讯作者:
Goff SP
中科院分区:
文献类型:
--
作者:
Schlesinger S;Lee AH;Wang GZ;Green L;Goff SP
Embryonic cells transcriptionally repress the expression of endogenous and exogenous retroelements. Trim28, a key player in this silencing, is known to act in a large DNA-bound complex, but the other components of the complex are not fully characterized. Here we show that the zinc finger protein Yin Yang 1 (YY1) is one such component. YY1 binds to the LTR region of both exogenous and endogenous retroviruses (ERVs). Deletion of the YY1 binding site from the retroviral genome leads to major loss of silencing in embryonic cells, and a coordinated loss of repressive epigenetic marks from the proviral chromatin. Depletion of YY1 protein results in marked upregulation of expression of exogenous viruses and of selected ERVs. Finally, we report an embryonic cell-specific interaction between YY1 and Trim28. Our results suggest a major role for YY1 in the silencing of both exogenous and endogenous retroviruses in embryonic cells.
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影响因子:
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DOI:
10.1242/dev.087585
发表时间:
2013-02-01
期刊:
Development (Cambridge, England)
影响因子:
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作者:
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通讯作者:
Trono D