相关实验视频
Updated: Jul 18, 2025

04:20
Author Spotlight: Exploring the Role of FAM83A in Cervical Cancer
Published on: February 9, 2024
969
Cdc73保护诺奇诱导的T细胞白血病细胞免受DNA损伤和线粒体应激
Ashley F Melnick1, Carea Mullin2, Karena Lin1
1Cellular and Molecular Biology Program, University of Michigan School of Medicine, Ann Arbor, MI.
Blood
|August 24, 2023
概括
细胞分裂周期73 (Cdc73) 通过与Notch信号交互,对T细胞急性淋巴细胞白血病 (T-ALL) 至关重要. 准Cdc73提供了一种针对T-ALL的新策略,绕过了Notch抑制剂的毒性.
科学领域:
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
- 转录条例 转录条例 转录条例
背景情况:
- 切口信号在T细胞急性淋巴细胞白血病 (T-ALL) 中至关重要.
- 现有的潘诺奇抑制剂在临床试验中引起显著的毒性.
- 细胞分裂周期73 (Cdc73) 是一个Notch辅因子和新兴的T-ALL标.
研究的目的:
- 调查Cdc73作为T-ALL.的替代目标.
- 阐明Cdc73在T-ALL的机制.
- 在T-ALL中探索Cdc73,Notch1和ETS1之间的相互作用.
主要方法:
- 使用了T-ALL.的小鼠模型.
- 进行了染色体和新生的基因表达概况.
- 分析了Cdc73,NOTCH1和ETS1.1之间的蛋白质与蛋白质相互作用.
主要成果:
- Cdc73对于Notch诱导的T细胞发育和T-ALL维护至关重要.
- Cdc73,ETS1和Notch1汇聚到增强剂和促进剂,以调节T-ALL瘤基因和DNA修复通路.
- 删除Cdc73会导致DNA损伤,亡和线粒体功能受损.
- 一个Cdc73诱导的DNA修复程序在T-ALL中高度表达.
结论:
- 通过调节基因表达程序,Cdc73在T-ALL病变发生过程中发挥着至关重要的作用.
- 准Cdc73可能为T-ALL提供一种不太有毒的治疗策略.
- 了解Cdc73与Notch的相互作用,可以了解对抗依赖Notch的癌症的方法.
相关概念视频
DNA Damage can Stall the Cell Cycle
9.2K
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...
9.2K
Notch Signaling Pathway
4.3K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
4.3K
Abnormal Proliferation
4.6K
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...
4.6K
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
Negative Regulator Molecules
35.4K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
35.4K
The Intrinsic Apoptotic Pathway
6.6K
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.6K

