在MASLD的实验模型中,黑素部分恢复了肝脏的夜间振荡
Shruti Kulshrestha1, Rhydham Karnik1,2, Aliasgar Vohra1,3
1Chronobiology and Metabolic Endocrinology Lab, Department of Zoology, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, India.
Chronobiology international
|May 2, 2025
概括
黑色素为与代谢功能障碍相关的脂肪性肝病 (MASLD) 提供治疗潜力. 这项研究揭示了黑激素纠正了Nocturnin (Noct) 的昼夜节律扰乱,这是MASLD肝脏脂质代谢的关键调节者.
科学领域:
- 循环生物学的日间生物.
- 肝病学 肝病学是一种肝病学.
- 分子内分泌学分子内分泌学
背景情况:
- 黑色素 (一种神经激素) 在与代谢功能障碍相关的脂肪性肝病 (MASLD) 中表现出肝保护作用.
- 在MASLD中Nocturnin (Noct) 的作用,一个调节肝脂代谢的昼夜时钟输出,仍然不清楚.
- 了解MASLD中的Noct昼夜动态对于治疗开发至关重要.
研究的目的:
- 在MASLD的小鼠模型中研究Nocturnin (Noct) 的昼夜振荡.
- 探索黑激素和MASLD对Noct昼夜节律的协同作用.
- 为了确定Noct对脂质基因表达的影响.
主要方法:
- 给小鼠提供高脂肪,高果糖饮食,或没有时间中断,持续16周.
- 使用定量实时PCR分析了Noct mRNA的循环表达模式.
- 用油酸 (OA) 和黑激素对待HepG2细胞以评估细胞反应.
主要成果:
- 在小鼠中,MASLD和时间干扰诱导了高和相位转移的Noct mRNA表达.
- 黑色素治疗显著降低了Noct幅度和累积表达,纠正了节奏性.
- 诺克特被确定为关键脂原基因HNF-4A和SCD的调节者.
结论:
- MASLD 破坏肝脏Noct 昼夜表达,导致脂质代谢发生变化.
- 黑色素通过纠正MASLD中的Noct昼夜分期来证明其治疗潜力.
- 准Noct昼夜节律为MASLD提供了一个新的治疗策略.
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