在人类细胞癌中可逆性苏尼提尼布耐受性状态的分子和功能特征
Angela Zaccagnino1, Bozhena Vynnytska-Myronovska1, Michael Stöckle1
1Department of Urology and Pediatric Urology, Saarland University, Homburg, Germany.
Journal of cellular and molecular medicine
|May 2, 2024
概括
转移性细胞癌 (mRCC) 的 sunitinib 治疗失败可以克服. 耐药癌细胞可逆地适应sunitinib,提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌细胞生物学 癌细胞生物学
背景情况:
- 治疗失败的苏尼替尼 (一种氨酸激酶抑制剂) 是转移性细胞癌 (mRCC) 的重大挑战.
- 瘤亚种群可以发展过渡性,非变异性耐药状态,导致最小的残留疾病和复发.
- 在RCC中对苏尼提尼布耐受性的机制尚不清楚.
研究的目的:
- 调查细胞癌 (RCC) 细胞中逊尼提尼布耐受性背后的分子机制.
- 描述与逊尼提尼布耐受性相关的表型和分子变化.
- 探索针对这些机制的潜力,以开发新的治疗策略.
主要方法:
- 通过长时间的药物治疗,诱导786-O/S和Caki-2/SRCC细胞系的逊尼提尼布耐受性.
- 对耐药细胞中药物敏感性,克隆原性和DNA合成的评估.
- 对信号通路 (c-MET,AXL,p38激酶,BCL-2),actin细胞骨架重塑和焦点粘附蛋白的分析.
- 细胞迁移和入侵的评估.
- 药物戒断实验,以评估耐受状态的可逆性.
主要成果:
- 长时间的sunitinib治疗诱导了RCC细胞的耐药性状态,其特征是降低敏感性,增强克隆原性和增加DNA合成.
- 苏尼提尼布的耐受性涉及c-MET和AXL通路的激活,改变的p38激酶和BCL-2信号,以及广泛的actin细胞骨架重塑.
- 药物反应,即使在敏感细胞中,也涉及到actin细胞骨的变化,促进了迁移和入侵,表明细胞状态的过渡,而不是先前存在的突变.
- 药物耐受性状态是暂时的,在药物戒断后是可逆的,这表明了动态调节和表型异质性.
结论:
- 苏尼提尼布在RCC中的耐受性是一种动态的,可逆的表型开关,由特定的分子路径和细胞过程调节.
- 了解这些可逆机制为克服mRCC.sunitinib耐药性的潜在治疗点提供了潜在的治疗目标.
- 向参与细胞状态转换和细胞骨动态的途径可能会使瘤重新敏感于sunitinib治疗.
更多相关视频
13:19Quantifying Antibody-Dependent Cellular Cytotoxicity in a Tumor Spheroid Model: Application for Drug Discovery
Published on: April 26, 2024
2.6K
06:38A Syngeneic Mouse Model of Metastatic Renal Cell Carcinoma for Quantitative and Longitudinal Assessment of Preclinical Therapies
Published on: April 12, 2017
13.6K
相关概念视频
Treatment 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
Targeted 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
Loss of Tumor Suppressor Gene Functions
4.8K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
4.8K
