用基于银河糖的抗代谢物在质母细胞瘤中准莱洛尔途径
Martyn A Sharpe1,2,3, Omkar B Ijare1,2,3,4, Sudhir Raghavan1,2,3
1Kenneth R. Peak Brain and Pituitary Tumor Treatment Center, Houston Methodist Hospital, Houston, TX 77030, USA.
Cancers
|October 26, 2024
概括
质母细胞瘤 (GBM) 使用D-Galactose (Gal) 的代谢. 抗代谢物4-脱氧-4-甲糖 (4DFG) 针对这种途径,在临床前模型中显示对GBM瘤的有效性.
科学领域:
- 生物化学 生物化学
- 在瘤学瘤学.
- 代谢学 代谢学 代谢学
背景情况:
- 质母细胞瘤 (GBM) 通过Glut3/Glut14和Leloir途径利用D-Galactose (Gal).
- UDP-4-deoxy-4-fluorogalactose (UDP-4DFG) 抑制了Gal代谢和甘氨酸合成中的关键酶.
- 4-脱氧-4-甲糖 (4DFG) 是一种Gal抗代谢物,是Glut3/Glut14的基质,也是潜在的质瘤化疗药物.
研究的目的:
- 研究4DFG作为抗GBM化疗剂的疗效.
- 评估4DFG对GBM细胞糖化和新陈代谢的影响.
- 在GBM模型中评估4DFG的体内毒性和疗效.
主要方法:
- 主要的GBM细胞培养物被用于毒性和甘氨酸成分分析.
- 活体疗效在小鼠侧翼和内GBM模型中进行了测试.
- 基于CNMR的痕迹研究评估了4DFG对D-葡萄糖代谢的影响.
主要成果:
- 4DFG对GBM细胞 (IC50:125-300μM) 显示出中等强度,并破坏了GBM糖化.
- 在4DFG治疗时,内GBM模型的生存率提高了三倍 (p < 0.01).
- 代谢流量分析显示,用4DFG治疗的GBM细胞中[U-13C]Glc的糖分和线粒体流量减少.
结论:
- 在GBM中有一个功能性的Gal-scavenging通路,支持使用基于Gal的抗代谢物作为化疗药物.
- 4DFG在体外和体内被GBM细胞代谢.
- 4DFG对GBM瘤具有致命性,在小鼠中耐受性良好,这表明它具有治疗潜力.
更多相关视频
10:28Flow Cytometry-based Drug Screening System for the Identification of Small Molecules That Promote Cellular Differentiation of Glioblastoma Stem Cells
Published on: January 10, 2018
8.3K
12:55Generation of CAR T Cells for Adoptive Therapy in the Context of Glioblastoma Standard of Care
Published on: February 16, 2015
21.4K
相关概念视频
Targeted Cancer Therapies
7.5K
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...
7.5K
Combination Therapies and Personalized Medicine
4.9K
Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
4.9K
