PIM1-HDAC2轴通过表观遗传修饰来调节肠道平衡
Jianming Yang1, Yawen Xiao1, Ningning Zhao1
1Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, the Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Institute of Urology, the Second Hospital of Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin 300070, China.
莫洛尼小鼠白血病病毒-1 (PIM1) 基因酶的前病毒整合部位在结肠炎中升高,减少了杯状细胞. 这种PIM1-HDAC2轴会损害肠道屏障的完整性,并促进结肠炎相关的结肠直肠癌.
科学领域:
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 肠道粘膜屏障对于肠道平衡至关重要.
- 玻璃杯细胞是保持粘膜屏障完整性的关键.
- 在大肠炎引起的肠功能障碍中PIM1激酶的作用以前是未知的.
研究的目的:
- 调查PIM1酶在结肠炎期间肠道平衡中的作用.
- 阐明PIM1影响小杯细胞分化的分子机制.
- 探索PIM1-HDAC2轴在性结肠炎和结肠炎相关结肠直肠癌 (CAC) 的发病过程中的作用.
主要方法:
- 从性结肠炎患者和小鼠模型的结肠组织中分析PIM1表达.
- 评估PIM1-操纵小鼠的杯状细胞数量和肠道屏障功能.
- 研究PIM1与基因素脱乙酶2 (HDAC2) 的相互作用及其对Wnt和Notch信号通路的影响.
主要成果:
- 在性结肠炎患者和小鼠模型的结肠表皮上显著增加PIM1的表达.
- 皮质PIM1过度表达导致杯状细胞的减少,损害大肠炎的抵抗力,并促进小鼠的CAC.
- PIM1可化并降低HDAC2的调节,改变Wnt信号基因的表观遗传特征,调节杯状细胞分化.
结论:
- PIM1-HDAC2轴在杯细胞分化和肠道平衡中发挥着至关重要的作用.
- PIM1通过损害杯状细胞功能,有助于性结肠炎和CAC的发病.
- 针对PIM1-HDAC2轴代表了性结肠炎和CAC的潜在治疗策略.
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