HuR促进了甘油三合成和肠道脂肪的吸收
Cihang Liu1, Yunping Lin2, Ying Wang2
1Department of Anesthesiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210008, China; Department of Biochemistry and Molecular Biology, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
Cell reports
|May 15, 2024
概括
结合RNA的蛋白HuR (ELAVL1) 通过促进小肠中三糖的合成,对食脂肪的吸收至关重要. 它的缺失可以缓解肥胖和脂肪肝疾病.
科学领域:
- 分子生物学分子生物学
- 胃肠病学 胃肠病学
- 代谢疾病 代谢疾病
背景情况:
- 小肠中的三糖 (TAG) 合成是饮食脂肪吸收的关键.
- 调节TAG合成的精确分子机制需要进一步研究.
研究的目的:
- 阐明RNA结合蛋白HuR (ELAVL1) 在调节TAG合成和食脂肪吸收中的作用.
- 研究HuR对高脂肪饮食诱导的代谢障碍的影响.
主要方法:
- 研究了HuR与Dgat2mRNA和Mgat2前mRNA的关联.
- 使用了特定于肠表皮的HuR淘汰赛小鼠模型.
- 评估了饮食脂肪吸收,TAG合成和代谢参数.
主要成果:
- HuR与Dgat2 mRNA 3' UTR结合,使其稳定,并与Mgat2 mRNA前引子1结合,促进其处理.
- 肠道HuR缺陷会降低DGAT2和MGAT2的表达.
- 在HuR淘汰赛模型中观察到减少脂肪吸收和减轻高脂肪饮食引起的肥胖和NAFLD.
结论:
- HuR通过调节小肠中TAG合成,在促进食脂肪吸收方面发挥着至关重要的作用.
- 向HuR可能为管理肥胖和非酒精性脂肪性肝病 (NAFLD) 提供治疗策略.
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