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lncSHGL的甲基化通过调节miR-149/Mospd3轴来促进脂肪细胞的分化

Xianwei Huang^1,2, Xiong Liu^1,2, Jiyan Lin^1,2

¹Emergency Department, The First Affiliated Hospital of Xiamen University, Xiamen, China.

Cell cycle (Georgetown, Tex.)

|December 7, 2023

概括

长非编码RNA SHGL (lncSHGL) 通过海绵miR-149和抑制miR-149/Mospd3轴来抑制脂肪细胞分化. 针对 lncSHGL 提供了一个潜在的肥胖和脂肪肝疾病治疗策略.

科学领域:

分子生物学分子生物学
遗传学是一个遗传学.
生物化学生物化学

背景情况:

肥胖是一种复杂的健康问题,与脂肪细胞分化有关.
长非编码RNAs (lncRNAs) 在脂肪生成中的作用尚未完全理解.
发现了一种新的lncRNA,IncSHGL,抑制肝脏葡萄糖生成和脂质生成.

研究的目的:

研究lncSHGL在脂肪细胞分化中的功能和机制.
探索lncSHGL,miR-149和Mospd3在调节脂肪生成中的关系.

主要方法:

在3T3-L1细胞分化过程中观察到lncSHGL表达和在ob/ob小鼠中.
使用分子海绵试验来确定lncSHGL,miR-149和Mospd3.3之间的相互作用.
在3T3-L1细胞中对lncSHGL和miR-149进行了功能增益和丧失的研究.
分析了关键的基因表达和信号通路 (例如PI3K/AKT/mTOR).
研究了DNA甲基化在lcSHGL调节中的作用.

主要成果:

在3T3-L1分化过程中,lncSHGL表达减少,在肥胖小鼠中较低.
lncSHGL直接针对miR-149,这反过来又针对Mospd3.3的目标.
过度表达lncSHGL或抑制miR-149抑制脂肪细胞分化标记物 (PPARγ2,C/EBPα,Cyclin D1,LPL,AP2) 并抑制PI3K/AKT/mTOR通路.
甲基化抑制了lcSHGL的表达,甲基化抑制增强了lcSHGL的表达,抑制了分化.

结论:

lncSHGL甲基化通过miR-149/Mospd3轴促进脂肪细胞的分化.
lncSHGL作为脂肪生成的关键抑制剂.
准lncSHGL为肥胖和相关的脂肪肝疾病提供了潜在的治疗途径.

关键词:

脂肪细胞分化的差异化这是一个很好的例子.miR-149/Mospd3 的使用情况.

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