The methyltransferase PRMT1 regulates γ-globin translation.

The methyltransferase PRMT1 regulates γ-globin translation.
复制标题

甲基转移酶 PRMT1 调节 γ-珠蛋白翻译。

DOI:
10.1016/j.jbc.2021.100417
复制
发表时间:
2021-01
期刊:
The Journal of biological chemistry
影响因子:
--
通讯作者:
Zhao Q
Zhao Q
中科院分区:
其他
文献类型:
--
作者:
Wang Y;Li X;Ge J;Liu M;Pang X;Liu J;Luo C;Xu Y;Zhao Q

文献摘要

参考文献

被引文献

相似文献

诱导胎儿血红蛋白克服成人β-珠蛋白基因缺陷是改善人类β-血红蛋白病的有效治疗策略。先前的工作已经揭示了胎儿γ-珠蛋白可以通过整合的应激信号传导被诱导,但是其他研究已经表明激活应激可能最终在转录上抑制γ-珠蛋白的表达。在翻译水平调节γ-珠蛋白表达的机制在很大程度上仍然未知,限制了我们确定激活应激是否是这些疾病的现实治疗选择的能力。在这项研究中,我们进行了一项功能性CRISPR筛选,靶向蛋白质精氨酸甲基转移酶(PRMT),以寻找K562细胞中γ-珠蛋白表达的变化。我们不仅发现了几种特异的PRMT可以阻断γ-珠蛋白的转录,而且还发现PRMT 1是一个独特的家族成员,能够特异性地在翻译水平上抑制γ-珠蛋白的合成。我们进一步鉴定了γ-珠蛋白的5'非翻译区内的非AUG uORF充当翻译的屏障,其在PRMTl缺陷时被绕过。最后,我们发现这种新的γ-珠蛋白抑制机制可以被PRMT 1抑制剂二盐酸呋喃脒靶向。这些数据提出了关于甲基转移酶功能的新问题,并可能为β-血红蛋白病提供新的治疗方向。
Induction of fetal hemoglobin to overcome adult β-globin gene deficiency is an effective therapeutic strategy to ameliorate human β-hemoglobinopathies. Previous work has revealed that fetal γ-globin can be translationally induced via integrated stress signaling, but other studies have indicated that activating stress may eventually suppress γ-globin expression transcriptionally. The mechanism by which γ-globin expression is regulated at the translational level remains largely unknown, limiting our ability to determine whether activating stress is a realistic therapeutic option for these disorders. In this study, we performed a functional CRISPR screen targeting protein arginine methyltransferases (PRMTs) to look for changes in γ-globin expression in K562 cells. We not only discovered that several specific PRMTs may block γ-globin transcription, but also revealed PRMT1 as a unique family member that is able to suppress γ-globin synthesis specifically at the translational level. We further identified that a non-AUG uORF within the 5’ untranslated region of γ-globin serves as a barrier for translation, which is bypassed upon PRMT1 deficiency. Finally, we found that this novel mechanism of γ-globin suppression could be pharmacologically targeted by the PRMT1 inhibitor, furamidine dihydrochloride. These data raise new questions regarding methyltransferase function and may offer a new therapeutic direction for β-hemoglobinopathies.
DOI: 10.1182/blood-2013-03-491043
发表时间: 2013-07-25
期刊: BLOOD
影响因子: 20.3
作者:
Hahn, Cynthia K.;Lowrey, Christopher H.
通讯作者: Lowrey, Christopher H.
DOI: 10.1073/pnas.1207846109
发表时间: 2012-09-11
影响因子: 11.1
作者:
Lee, Sooncheol;Liu, Botao;Qian, Shu-Bing
通讯作者: Qian, Shu-Bing
DOI: 10.1126/science.aad3312
发表时间: 2016-01-15
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Masuda T;Wang X;Maeda M;Canver MC;Sher F;Funnell AP;Fisher C;Suciu M;Martyn GE;Norton LJ;Zhu C;Kurita R;Nakamura Y;Xu J;Higgs DR;Crossley M;Bauer DE;Orkin SH;Kharchenko PV;Maeda T
通讯作者: Maeda T
DOI: 10.1016/j.cell.2014.10.001
发表时间: 2014-10-23
期刊: Cell
影响因子: 64.5
作者:
Hussain T;Llácer JL;Fernández IS;Munoz A;Martin-Marcos P;Savva CG;Lorsch JR;Hinnebusch AG;Ramakrishnan V
通讯作者: Ramakrishnan V
DOI: 10.1093/nar/gkw1367
发表时间: 2017-05-05
影响因子: 14.9
作者:
Gao G;Dhar S;Bedford MT
通讯作者: Bedford MT