在db/db小鼠中,Smad3通过向PPARδδ来调节糖尿病失脂症和脂肪肝
Huijun He1,2,3, Yu Zhong2, Honglian Wang2
1Division of Nephrology, Department of Medicine, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China.
International journal of molecular sciences
|July 29, 2023
概括
针对Smad3信号,可以预防2型糖尿病并发症. 在小鼠中抑制Smad3改善了血糖,血脂不良和非酒精性脂肪肝疾病 (NAFLD).
科学领域:
- 代谢性疾病是一种代谢性疾病.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 转化生长因子-β (TGF-β) /Smad3信号与纤维化和炎症性疾病有关.
- 在2型糖尿病相关的失脂症和非酒精性脂肪性肝病 (NAFLD) 中Smad3的特定作用尚不清楚.
- 针对这些代谢异常的Smad3的治疗潜力仍然未被探索.
研究的目的:
- 调查Smad3在脱脂症和NAFLD在2型糖尿病中的作用.
- 探索Smad3抑制对这些代谢条件的治疗作用.
主要方法:
- 使用了Smad3淘汰赛 (KO) db/db小鼠和Smad3野生型 (WT) db/db小鼠.
- 在小鼠db/db中使用Smad3特异性抑制剂 (SIS3).
- 采用RNA测序来识别参与脂质代谢的Smad3目标基因.
主要成果:
- 与WT小鼠相比,Smad3 KO db/db小鼠表现出对脱脂症和NAFLD的保护.
- 在小鼠db/db中,SIS3治疗改善了血糖水平,糖尿病性脂质失调症和NAFLD.
- 发现Smad3向氧酶增殖器激活受体三角体 (PPARδ),导致脂质不良和NAFLD.
结论:
- 在2型糖尿病的背景下,Smad3在脱脂症和NAFLD的发展中发挥着关键作用.
- 基因删除或Smad3的药理抑制为管理2型糖尿病中代谢异常提供了潜在的治疗策略.
- 准Smad3-PPARδ轴为治疗糖尿病代谢障碍提供了一个新的治疗途径.
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