相关实验视频
Updated: Jun 25, 2025

07:48
An Orthotopic Bladder Cancer Model for Gene Delivery Studies
Published on: December 1, 2013
12.5K
针对晚期膀癌患者的化学抵抗,采用一种新的辅助策略
Juliette R Seremak1, Kunj Bihari Gupta1, Sunilkanth Bonigala2
1Augusta University, Augusta, GA, United States.
Molecular cancer therapeutics
|May 30, 2024
概括
一种新型化合物UA4在治疗晚期膀癌 (BC) 中表现有前途,包括耐吉西塔的形式. 这种无毒剂有效抑制瘤生长,并在临床前模型中增强化疗结果.
科学领域:
- 在瘤学瘤学.
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 晚期膀癌 (BC) 存在重大治疗挑战,原因是快速进展和耐药性的标准化疗,如gemcitabine.
- 高度瘤 (>T2a) 占BC诊断的很大一部分,往往对当前的治疗反应不佳.
- 现有的辅助疗法效果有限,需要探索新的治疗策略.
研究的目的:
- 评估一种新的酸衍生物UA4对人类膀癌细胞系的治疗潜力,对Gemcitabine敏感和Gemcitabine耐药.
- 在膀癌的临床前模型中,研究UA4单独和结合gemcitabine的疗效.
- 阐明UA4抗癌作用背后的作用机制.
主要方法:
- 在体外评估UA4对人类膀癌细胞系 (5637和T24) 的细胞毒性,包括耐吉他的变体.
- 评估UA4与gemcitabine结合的协同效应,使用不同的剂量序列.
- 在体内有效性研究中,使用携带人类膀癌异种移植的无血小鼠,评估瘤生长抑制和毒性.
- 机理学研究包括对亡,反应性氧物种 (ROS) 生产,线粒体功能和细胞周期进展的分析.
主要成果:
- 在低微分子度下,UA4在对gemcitabine敏感和耐药膀癌细胞进行强烈的体外细胞毒性.
- 用UA4进行预处理,然后用gemcitabine表现出协同杀死效应,与连续使用或单一药物相比,显著提高了疗效.
- 在小鼠体内,口服UA4有效抑制了瘤生长,没有观察到系统性毒性.
- 机械研究表明,UA4通过ROS介导的线粒体功能障碍和细胞循环停止诱导细胞毒性,引发细胞毒性自.
结论:
- 在体外和体内,UA4表现出显著的抗癌活性,可对抗晚期和耐吉西他的膀癌.
- UA4和gemcitabine的组合为膀癌治疗提供了一个有希望的协同治疗策略.
- UA4代表了一种潜在的无毒,口服可用的治疗药物,用于高度膀癌,需要进一步的临床研究.
更多相关视频
11:02Induction of Invasive Transitional Cell Bladder Carcinoma in Immune Intact Human MUC1 Transgenic Mice: A Model for Immunotherapy Development
Published on: October 30, 2013
21.3K
08:43An Orthotopic Bladder Tumor Model and the Evaluation of Intravesical saRNA Treatment
Published on: July 28, 2012
14.7K
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