法尔内索伊德X受体的激活抑制胰腺癌的发生
Zhen Xu1, Zhenhua Huang1, Yifan Zhang1
1Department of General, Visceral and Transplantation Surgery, University Clinic Heidelberg, Heidelberg, Germany; Section Surgical Research, University Clinic Heidelberg, Heidelberg, Germany.
概括
通过诺二氧化醇酸 (CDCA) 激活Farnesoid X受体 (FXR) 抑制了小鼠的胰腺癌生长. 这表明FXR激动剂可能会在胰腺管腺癌 (PDAC) 进展方面起到保护作用.
科学领域:
- 在瘤学瘤学.
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
背景情况:
- 法尔内索伊德X受体 (FXR) 是一个调节胆酸 (BA) 稳态的核受体,与各种癌症有关.
- 它在胰腺管腺癌 (PDAC) 瘤发生中的确切作用仍在争论中.
- 已经证明,FXR可以减弱慢性胰腺炎的自,促进胰腺癌发生.
研究的目的:
- 调查FXR在PDAC发展中的作用.
- 为了确定 chenodeoxycholic 酸 (CDCA) 的 FXR 激活是否会影响小鼠模型中的癌前病变.
- 评估人类PDAC组织中的FXR表达和激活.
主要方法:
- 给克拉斯-p48-Cre (KC) 小鼠使用CDCA (一种FXR激动剂).
- 评估胰腺内皮质瘤 (PanIN) 的进展,细胞增殖,自和炎症标志物.
- 用CDCA治疗的野生类型KC小鼠与缺乏FXR的KC小鼠之间的比较.
- 胰腺癌细胞系的体外研究和人类PDAC组织样本的分析.
主要成果:
- 在KC小鼠中,CDCA治疗减弱了PanIN进展,减少了细胞增殖和自活动.
- 缺乏FXR的KC小鼠对CDCA没有反应,证实了依赖FXR的效应.
- 通过CDCA激活FXR导致炎症增加和抑制自,并产生补偿性抗炎反应.
- 在胰腺癌细胞系中激活了FXR,并在人类PDAC组织中高度表达.
结论:
- 胰腺FXR通过CDCA等BA暴露的激活抑制了自并促进了炎症.
- 这种FXR激活导致小鼠癌前PDAC病变的进展减少.
- FXR激动剂可能具有降低PDAC生长和进展的治疗潜力.
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