蛋白质denitrosylase SCoR2 调节脂质发生和脂肪储存
Nicholas M Venetos1, Colin T Stomberski1, Hua-Lin Zhou1
1Institute for Transformative Molecular Medicine, Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA.
Science signaling
|December 23, 2025
概括
一个新发现的酶,SCoR2 (denitrosylase),通过抵消S-nitrosylation促进脂肪储存,并损害代谢健康. 在小鼠和人类中抑制SCoR2为肥胖和与代谢功能障碍相关的脂肪性肝病 (MASLD) 提供了潜在的治疗策略.
科学领域:
- 生物化学 生物化学
- 代谢生物学代谢生物学
- 分子内分泌学分子内分泌学
背景情况:
- 脂质稳态是通过翻译后的修改来调节的,包括乙化和S-化.
- 锡尔图因脱乙酶是已知的脂质代谢调节剂.
- 丁酸酶在脂质代谢中的作用在很大程度上仍未被探索.
研究的目的:
- 为了研究哺乳动物denitrosylase SCoR2在调节脂质稳定和代谢健康中的作用.
- 确定SCoR2是否是肥胖和MASLD的潜在治疗标.
主要方法:
- 在小鼠中进行的研究涉及遗传删除和SCoR2.2的药理抑制.
- 脂肪细胞和肝细胞功能的分析.
- 研究涉及S-化和转录因子活性 (PPARγ,SREBP1,CEBPα) 的分子机制.
- 人体组织和患者数据的相关性分析.
主要成果:
- 在小鼠中,SCoR2蛋白的丰度与身体质量正相关.
- 删除或抑制SCoR2可以预防小鼠的饮食引起的肥胖和MASLD.
- 脂肪细胞中SCoR2的损失导致了髓9S-化,抑制了脂原转录因子,并阻止了脂肪的储存.
- 肝细胞中SCoR2的抑制降低了脂肪合成和增加了脂肪氧化.
- 人类研究表明,与肥胖相关的多态性和增加的SCoR2mRNA之间存在关联,SCoR2水平与脂肪细胞大小和MASLD严重程度相关.
结论:
- 哺乳动物denitrosylase SCoR2促进脂肪储存和脂质生成,损害代谢健康.
- 在调节营养代谢方面,SCoR2的功能类似于sirtuins.
- SCoR2代表了肥胖和MASLD的有前途的治疗标.
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