铜,一个复合铜ATG4B和自抑制剂,表现出强大的抗癌作用
Peng-Fei Qiang1,2, Yao Wang2, Dong-Yang Zhang1
1Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, China.
铜 (CuPT) 有效抑制ATG4B蛋白酶活性,阻断自. 这种新型的铜复合体在体外和体内表现出强大的抗癌作用,诱导一种称为cuproptosis的新细胞死亡途径.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 自抑制是一种有前途的癌症治疗策略.
- 囊蛋白酶ATG4B是自的一个关键调节器.
- 铜离子抑制ATG4B活性,这表明铜复合体作为抑制剂的潜力.
研究的目的:
- 确定和描述一种新的ATG4B铜复合体抑制剂.
- 为了评估铜 (CuPT) 的抗癌疗效,在体外和体内.
- 为了研究CuPT诱导的癌细胞死亡的机制.
主要方法:
- 在体外ATG4B活性抑制的FRET基试验.
- 基于细胞的测试来评估自流和蛋白质聚合.
- 在体外和体外抗癌活性评估使用各种癌细胞系和结肠直肠外移植小鼠模型.
- 分析CuPT诱导的细胞死亡机制,包括cuproptosis.
主要成果:
- 铜 (CuPT) 强烈抑制了ATG4B活性 (IC50 = 250.9 nM) 并阻断了自流.
- 在结直肠外移植模型中,CuPT抑制了8个癌细胞系 (IC50 < 1 μM) 的活力,并显著抑制了瘤生长.
- CuPT诱导了不溶性ATG4B和p62聚合物,并触发了一种新的依赖铜的细胞死亡,即cuproptosis.
- 由CuPT诱导的细胞毒性是可逆的,通过增强自.
结论:
- 铜氨酸 (CuPT) 是第一个被识别的ATG4B的铜复合抑制剂.
- 通过抑制自和诱导cuproptosis,CuPT表现出显著的抗癌潜力.
- 对于各种癌症,CuPT 是一个有前途的治疗候选药物.
更多相关视频
19:44Enhancement of Apoptotic and Autophagic Induction by a Novel Synthetic C-1 Analogue of 7-deoxypancratistatin in Human Breast Adenocarcinoma and Neuroblastoma Cells with Tamoxifen
Published on: May 30, 2012
09:59Quantitative Analysis of Autophagy using Advanced 3D Fluorescence Microscopy
Published on: May 3, 2013
相关概念视频
Targeted Cancer Therapies
There are several types of targeted therapies against...
Autophagy
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
Allosteric Proteins-ATCase
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Inhibition of Cdk Activity
Drugs that Stabilize Microtubules
