The roles of SMYD4 in epigenetic regulation of cardiac development in zebrafish.

The roles of SMYD4 in epigenetic regulation of cardiac development in zebrafish.
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SMYD4在斑马鱼心脏发育表观遗传调控中的作用

DOI:
10.1371/journal.pgen.1007578
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发表时间:
2018-08
期刊:
影响因子:
4.5
通讯作者:
Ma D
Ma D
中科院分区:
生物学2区
文献类型:
--
作者:
Xiao D;Wang H;Hao L;Guo X;Ma X;Qian Y;Chen H;Ma J;Zhang J;Sheng W;Shou W;Huang G;Ma D

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SMYD 4属于赖氨酸甲基转移酶家族。我们通过使用CRISPR/Cas9技术产生smallpox 4突变斑马鱼系(smallpox 4L 544 Efs *1)来分析smallpox 4在斑马鱼发育中的作用。母体和合子small 4L 544 Efs *1突变体表现出严重的心脏畸形,包括左右图案和循环和发育不全的心室缺陷,表明small 4对心脏发育至关重要。重要的是,我们在208例先天性心脏病患者队列中发现了两种罕见的SMYD 4遗传变异。生化和功能分析均表明SMYD 4(G345 D)具有致病性。我们的数据表明,Smad 3 4作为组蛋白甲基转移酶发挥作用,并通过与HDAC 1相互作用,也作为组蛋白乙酰化的潜在调节剂。对smt 4L 544 Efs *1和野生型发育心脏的转录组和生物信息学分析表明,smt 4L 544 Efs * 1是一个关键的表观遗传调节因子,参与调节内质网介导的蛋白质加工和发育斑马鱼心脏中的几个重要代谢途径。
SMYD4 belongs to a family of lysine methyltransferases. We analyzed the role of smyd4 in zebrafish development by generating a smyd4 mutant zebrafish line (smyd4L544Efs*1) using the CRISPR/Cas9 technology. The maternal and zygotic smyd4L544Efs*1 mutants demonstrated severe cardiac malformations, including defects in left-right patterning and looping and hypoplastic ventricles, suggesting that smyd4 was critical for heart development. Importantly, we identified two rare SMYD4 genetic variants in a 208-patient cohort with congenital heart defects. Both biochemical and functional analyses indicated that SMYD4(G345D) was pathogenic. Our data suggested that smyd4 functions as a histone methyltransferase and, by interacting with HDAC1, also serves as a potential modulator for histone acetylation. Transcriptome and bioinformatics analyses of smyd4L544Efs*1 and wild-type developing hearts suggested that smyd4 is a key epigenetic regulator involved in regulating endoplasmic reticulum-mediated protein processing and several important metabolic pathways in developing zebrafish hearts.
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