破坏RAD54-BLM相互作用的小分子阻碍结肠癌化学抵抗模型中的瘤增殖
Ekjot Kaur1, Ritu Agrawal1, Rimpy Arun1
1Biotechnology Research Innovation Council-National Institute of Immunology (BRIC-NII), New Delhi, India.
The Journal of clinical investigation
|February 29, 2024
概括
研究人员确定了三种药物,这些药物破坏了RAD54和BLM酶之间的相互作用,这对于结肠癌中的同源重组修复 (HRR) 至关重要. 这种干扰减少了化学抵抗和瘤生长,提供了潜在的辅助疗法.
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 是一个遗传学.
背景情况:
- RAD54和BLM酶是同源重组修复 (HRR) 中的关键蛋白质,对于维持基因组稳定性至关重要.
- BLM (氨基酸181-212) 和RAD54之间的相互作用增强了RAD54的染色质重塑活性,促进HRR.
- 这种增强的HRR有助于在结肠癌中对破坏DNA的药物如思丁,坎普托提辛和氧沙丁的化学抵抗,促进瘤发生.
研究的目的:
- 识别破坏RAD54-BLM相互作用的小分子,以克服结肠癌中的化学抵抗.
- 研究这些小分子作为标准化疗的辅助剂的治疗潜力.
主要方法:
- 对普雷斯特威克小分子库进行选,以寻找抑制RAD54-BLM相互作用的化合物.
- 使用ChIP-Seq分析验证BLM和RAD54对目标发起人的核心招聘.
- 在临床前模型中评估已识别的小分子对HRR效率,固独立生长和瘤增殖的影响.
主要成果:
- 已经确定了三种FDA/EMA批准的小分子,通过与RAD54结合并改变其构造来破坏RAD54-BLM相互作用.
- 这些分子废除了RAD54-BLM依赖的染色质重塑,并降低了化学抵抗性结肠癌细胞中的HRR效率.
- 使用这些小分子的治疗显著减少了异种移植和异种移植小鼠模型中的瘤生长.
结论:
- 鉴定到的小分子通过准RAD54-BLM相互作用,有效地逆转化电阻.
- 这些化合物显示出作为结肠癌可行的辅助疗法的潜力,特别是与化疗剂结合使用.
- 需要进一步的临床研究来探索它们在治疗结肠癌患者中的有效性.
相关概念视频
02:56Treatment Resistant Cancers
3.3K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.3K
01:15Drugs that Stabilize Microtubules
2.0K
Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
2.0K
02:57Targeted Cancer Therapies
7.6K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.6K