Ubiad1 is an antioxidant enzyme that regulates eNOS activity by CoQ10 synthesis.

Ubiad1 is an antioxidant enzyme that regulates eNOS activity by CoQ10 synthesis.
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DOI:
10.1016/j.cell.2013.01.013
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发表时间:
2013-01-31
期刊:
影响因子:
64.5
通讯作者:
Santoro MM
Santoro MM
中科院分区:
生物学1区
文献类型:
--
作者:
Mugoni V;Postel R;Catanzaro V;De Luca E;Turco E;Digilio G;Silengo L;Murphy MP;Medana C;Stainier DY;Bakkers J;Santoro MM

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通过抗氧化网络保护免受过多活性氧(ROS)引起的氧化损伤对组织健康,特别是心血管系统的健康至关重要。在这里,我们通过分析斑马鱼ubiad1的空等位基因barolo (bar),确定了一个具有重要抗氧化特征的基因。bar突变体由于氧化应激和ros介导的细胞损伤而表现出特定的心血管衰竭。人UBIAD1是一种非线粒体戊烯基转移酶,在高尔基膜室中合成辅酶q10。UBIAD1的缺失减少了抗氧化剂辅酶q10的胞质池,导致血管细胞中ros介导的脂质过氧化。令人惊讶的是,抑制eNOS可防止ubiad1依赖性心血管氧化损伤,表明该酶和非线粒体CoQ10在NO信号传导中起关键作用。这些发现表明UBIAD1是一种非线粒体coq10形成酶,通过调节eNOS活性具有特定的心血管保护功能。►UBIAD1是一种高尔基戊烯基转移酶►UBIAD1有助于辅酶q10的非线粒体库►UBIAD1保护心血管组织免受nos依赖性氧化损伤►UBIAD1是通过限制他汀类药物副作用的治疗策略的靶标UBIAD1被确定为氧化损伤保护所需的非线粒体辅酶q10生物合成酶。通过CoQ10的合成,UBIAD1调节内皮一氧化氮合酶活性和一氧化氮信号,这是心血管发育和体内平衡所必需的。
Protection against oxidative damage caused by excessive reactive oxygen species (ROS) by an antioxidant network is essential for the health of tissues, especially in the cardiovascular system. Here, we identified a gene with important antioxidant features by analyzing a null allele of zebrafish ubiad1, called barolo (bar). bar mutants show specific cardiovascular failure due to oxidative stress and ROS-mediated cellular damage. Human UBIAD1 is a nonmitochondrial prenyltransferase that synthesizes CoQ10 in the Golgi membrane compartment. Loss of UBIAD1 reduces the cytosolic pool of the antioxidant CoQ10 and leads to ROS-mediated lipid peroxidation in vascular cells. Surprisingly, inhibition of eNOS prevents Ubiad1-dependent cardiovascular oxidative damage, suggesting a crucial role for this enzyme and nonmitochondrial CoQ10 in NO signaling. These findings identify UBIAD1 as a nonmitochondrial CoQ10-forming enzyme with specific cardiovascular protective function via the modulation of eNOS activity. ► UBIAD1 is a Golgi prenyltransferase ► UBIAD1 contributes to the nonmitochondrial pool of CoQ10 ► UBIAD1 protects cardiovascular tissues from NOS-dependent oxidative damage ► UBIAD1 is a target for therapeutic strategies by limiting the side effects of statins UBIAD1 is identified as a nonmitochondrial CoQ10 biosynthetic enzyme required for oxidative damage protection. Through CoQ10 synthesis, UBIAD1 modulates endothelial nitric oxide synthase activity and nitric oxide signaling necessary for cardiovascular development and homeostasis.
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