PGRMC1通过破坏TRIM56介导的AHR的无处不在,促进NSCLC的干细胞表型
Anqi Guan1, Ziyu Dai2, Chen Jiang2
1Department of Geriatrics, Xiangya Hospital, Central South University, Changsha 410008, China; Xiangya Lung Cancer Center, Xiangya Hospital, Central South University, Changsha 410008, China.
概括
孕激素受体膜组件1 (PGRMC1) 通过抑制AHR无处不在,驱动癌症干细胞 (CSC) 特性和非小细胞肺癌 (NSCLC) 的化学抵抗. 这揭示了NSCLC的一个新的治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 癌症干细胞 (CSCs) 驱动瘤化学抵抗和复发.
- 基碳化合物受体 (AHR) 对于保持CSC特性至关重要.
- 非小细胞肺癌 (NSCLC) 仍然是癌症死亡的主要原因.
研究的目的:
- 阐明孕激素受体膜成分1 (PGRMC1) 在调节NSCLC中AHR和CSC表型中的作用.
- 研究NSCLC中PGRMC1,AHR和E3结合酶TRIM56之间的相互作用.
- 确定克服NSCLC中CSC介导化学抵抗的潜在治疗点.
主要方法:
- 对来自NSCLC患者的临床数据和组织微阵列的分析.
- 在体外和体内实验评估CSC表型和化疗耐药性的实验.
- 质谱测量以确定蛋白相互作用和E3结合酶.
- 研究蛋白质无化和相互作用调制的研究.
主要成果:
- 增加PGRMC1表达与NSCLC患者的预后较差相关.
- 过度表达PGRMC1可以增强CSC表型和抗化疗能力.
- PGRMC1通过抑制AHR和TRIM56.6之间的相互作用来调节AHR的无处不在.
- 确定了PGRMC1和AHR之间的特定相互作用部位.
结论:
- 在NSCLC中发现了一种涉及PGRMC1,AHR和TRIM56的新型调控轴.
- PGRMC1通过TRIM56.6干扰AHR无处可见度来促进CSC特征和化学抵抗.
- 针对这种PGRMC1-AHR-TRIM56通路为NSCLC治疗提供了一个潜在的策略.
相关概念视频
Abnormal Proliferation
4.5K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.5K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.1K
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.1K
Restarting Stalled Replication Forks
5.8K
DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...
5.8K
DNA Damage can Stall the Cell Cycle
9.1K
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
9.1K


