阶段分离的融合蛋白通过破坏转录调节来驱动癌症
Nazanin Farahi1,2, Tamas Lazar1,2, Peter Tompa1,2,3,4
1VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie (VIB), Brussels, 1050, Belgium.
身体突变可以破坏液体-液体相分离 (LLPS),这是一个关键的细胞过程. 这项研究揭示了LLPS支架如何驱动癌症,突出了融合蛋白驱动恶性瘤的潜在新治疗点.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 生物物理学的生物物理.
背景情况:
- 细胞过程依赖于通过液-液相分离 (LLPS) 形成的生物分子凝聚物.
- 身体突变可以破坏或过度激活LLPS,影响细胞功能.
研究的目的:
- 系统地调查癌症和生物凝结之间的联系.
- 在癌症中映射LLPS变化.
- 了解影响LLPS支架的突变的分子病理机制和治疗含义.
主要方法:
- 对瘤性融合蛋白的分析.
- 确定驱动凝结物形成的分子功能.
- 与DNA/染色体结合域的关联研究.
主要成果:
- 鉴定出新的致癌融合蛋白,通过异常的LLPS驱动瘤发生.
- 发现易发生LLPS的融合蛋白与DNA结合域结合,沿DNA形成异常凝聚物.
- 由于这些凝聚物,在软组织肉瘤和血液恶性瘤中证明了基因表达程序的失调.
结论:
- 启动LLPS的蛋白质经常参与体质癌症,超过了它们在神经退行过程中的作用.
- 导致癌症的LLPS支架是具有主导表型的强大瘤基因,目前缺乏向疗法.
- 开发能够抑制瘤原核融合蛋白及其凝结的药物对于治疗各种癌症至关重要.
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