一种新型的CSN5抑制剂驱动瘤内在的PD-L1降解,并在三阴性乳腺癌中发挥直接的抗瘤效果
Yanjun Wang1, Hui Lei1,2, Wenyi Liu1,2
1Sichuan Provincial Engineering Research Center of Molecular Targeted Diagnostic and Therapeutic Drugs, College of Food and Bioengineering, Xihua University, Chengdu, Sichuan 610039, China.
Journal of medicinal chemistry
|February 18, 2026
概括
针对CSN5的新型阿赞醇衍生物显示出对三阴性乳腺癌 (TNBC) 的承诺. 化合物30有效抑制CSN5,降解PD-L1,并在临床前模型中表现出强大的抗瘤活性.
科学领域:
- 药用化学 医学化学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 在三阴性乳腺癌 (TNBC) 中,CSN5 是一个关键的瘤蛋白.
- CSN5稳定了PD-L1,促进了瘤的进展.
- 准CSN5是TNBC的一个潜在的治疗策略.
研究的目的:
- 为TNBC治疗开发新的CSN5抑制剂.
- 评估新型阿赞醇衍生物的抗瘤活性和机制.
主要方法:
- 合成和SAR分析4-NH替代的阿赞醇衍生物.
- 在体外测试以评估CSN5抑制,PD-L1降解和细胞循环停止.
- 使用MDA-MB-231异种移植模型进行体内研究.
主要成果:
- 化合物30被确定为一种强大的CSN5抑制剂 (IC50 = 0.58μM).
- 化合物30通过P53/Bax通路诱导PD-L1降解并触发了细胞亡.
- 在TNBC异种移植中显著抑制瘤生长,没有可观察到的毒性.
结论:
- 化合物30通过CSN5抑制表现出多式抗瘤活性.
- 这种新型的阿赞醇衍生物是TNBC的有希望的治疗候选者.
更多相关视频
13:38Synthesis and Characterization of an Aspirin-fumarate Prodrug that Inhibits NFκB Activity and Breast Cancer Stem Cells
Published on: January 18, 2017
12.7K
11:06Utilization of the Soft Agar Colony Formation Assay to Identify Inhibitors of Tumorigenicity in Breast Cancer Cells
Published on: May 20, 2015
29.9K
相关概念视频
02:34Inhibition of Cdk Activity
6.1K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
6.1K
02:57Targeted Cancer Therapies
9.0K
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...
9.0K