SRSF2保护了DNA损伤和修复基因的高效转录
Rebecca E Wagner1, Leonie Arnetzl2, Thiago Britto-Borges3
1Division of Mechanisms Regulating Gene Expression, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; Faculty of Biosciences, Heidelberg University, 69117 Heidelberg, Germany.
血清素/氨酸丰富的剪接因子2 (SRSF2) 的突变会导致DNA损伤和细胞循环停止. SRSF2调节用于DNA修复和细胞周期控制的基因转录,影响癌症的发展.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 遗传学 遗传学 是一个
背景情况:
- 富含氨酸/氨酸的剪接因子2 (SRSF2) 对于RNA处理和转录至关重要.
- 经常出现的SRSF2突变,如P95H,与各种癌症有关.
- 在状细胞癌中SRSF2的特定作用需要进一步阐明.
研究的目的:
- 为了研究SRSF2在状细胞癌中的功能.
- 了解SRSF2突变对DNA损伤和细胞循环调节的影响.
- 探索SRSF2在转录调节中的作用.
主要方法:
- 分析SRSF2删除和P95H突变对DNA损伤和细胞循环停止的影响.
- 评估SRSF2对DNA复制和修复基因双向转录的调节.
- 在体内研究中,使用暴露于致癌物质的小鼠模型来评估表皮细胞中SRSF2的哈普洛缺陷.
主要成果:
- 删除SRSF2或同卵性P95H突变会诱导显著的DNA损伤和细胞循环停止.
- SRSF2调节了DNA修复和复制基因的双向转录,而不依赖于拼接.
- 由于SRSF2的哈普洛缺陷导致了DNA损伤,但不是细胞循环的停止,幸存的细胞表现出转录性重新连接.
结论:
- 通过调节DNA损伤和复制基因的转录,SRSF2对于保持基因组稳定性至关重要.
- SRSF2突变可能导致DNA损伤和细胞循环控制的改变,导致瘤疾病.
- 通过SRSF2进行转录调节对于编排DNA损伤反应和细胞周期进展至关重要.
更多相关视频
06:59Using Next Generation Sequencing to Identify Mutations Associated with Repair of a CAS9-induced Double Strand Break Near the CD4 Promoter
Published on: March 31, 2022
06:44Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging
Published on: April 28, 2021
相关概念视频
DNA Damage can Stall the Cell Cycle
Nucleotide Excision Repair
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
Base Excision Repair
The first step of...
Fixing Double-strand Breaks
Long-patch Base Excision Repair
Overview of DNA Repair
Chemically...
