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饮食诱导的肥胖症扰乱了小鼠的性变态基因表达
Vicent Ribas1,2, Samantha Morón-Ros1,2, Helena Mari1,2,3
1Pathogenesis and Prevention of Diabetes Group, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
American journal of physiology. Cell physiology
|August 4, 2025
概括
生物性影响疾病,但肥胖症下的性别偏差基因调控尚不清楚. 高脂肪饮食会扰乱代谢组织中的性别特异性基因表达,对雄性和雌性小鼠的代谢健康有不同的影响.
科学领域:
- 代谢研究的研究.
- 基因组学就是基因组学.
- 疾病中的性别差异.
背景情况:
- 生物性别是疾病的一个关键因素,但它对基因调节的影响,特别是在代谢压力下,是研究不足的.
- 性二态基因是性别特异性特征和疾病模式的基础,但它们对代谢挑战的适应性反应在很大程度上是未知的.
研究的目的:
- 为了研究高脂肪饮食 (HFD) 诱导的肥胖症的性别特异性代谢适应和基因调控.
- 分析HFD对雄性和雌性小鼠肝脏和白脂肪组织 (WAT) 性别偏差基因表达的影响.
主要方法:
- 从雄性和雌性小鼠的肝脏和WAT的整体转录基因分析,在2周和12周内养HFD.
- 对性别之间的基因表达变化和跨时间点的比较分析.
- 基因表达改变与代谢功能障碍的相关性.
主要成果:
- 尽管有相似的脂肪,但雄性小鼠表现出比HFD下的雌性更严重的代谢障碍.
- 高脂肪饮食诱导了显著的性别特异性基因表达变化,特别是在男性中.
- 很大一部分 (高达46%) 的性别偏差基因被HFD调节,导致性别偏差表达的丧失,并与代谢功能障碍相关.
- 与乳毛功能和雌激素反应相关的男性偏差基因在HFD下在男性WAT中被下调.
结论:
- 由HFD引起的肥胖会破坏关键代谢组织中的性别特异性基因表达.
- 性偏差基因在维持新陈代谢健康方面发挥着至关重要的作用,并且受到HFD的显著影响.
- 了解HFD诱导的性别偏差基因调制对于解决性别特异的代谢疾病结果至关重要.
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