Therapeutic Targeting of Cancer Stem Cells Prevents Resistance of Colorectal Cancer Cells to MEK Inhibition

被引:7
作者
Lamichhane, Astha [1 ]
Thakuri, Pradip Shahi [1 ]
Singh, Sunil [1 ]
Nejad, Pouria Rafsanjani [1 ]
Heiss, Jacob [1 ]
Luker, Gary D. [2 ]
Tavana, Hossein [1 ]
机构
[1] Univ Akron, Dept Biomed Engn, Akron, OH 44325 USA
[2] Univ Michigan, Dept Radiol Microbiol & Immunol, Biomed Engn, Ann Arbor, MI 48105 USA
基金
美国国家卫生研究院;
关键词
drug resistance; tumor spheroids; colorectal cancer; combination treatments; cancer stem cells; invasion; ANTITUMOR-ACTIVITY; DRUG-RESISTANCE; COMBINATION; PATHWAY; SPHEROIDS; GROWTH; TUMORS;
D O I
10.1021/acsptsci.1c00257
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Drug resistance is a leading cause for the failure of cancer treatments. Plasticity of cancer cells to acquire stem cell-like properties enables them to escape drug toxicity through different adaptive mechanisms. Eliminating cancer stem cells (CSCs) can potentially improve treatment outcomes for patients. To determine the role of CSCs in resistance of colorectal cancer cells to targeted therapies and identify treatment strategies, we treated spheroids of BRAF(mut) and KRAS(mut) colorectal cancer cells with inhibitors of the mitogen-activated protein kinase pathway and studied resistance mechanisms through gene and protein expression analyses. We found that treatments activated several oncogenic pathways and expression of CSC markers CD166 and ALDH1A3. We identified a specific combination treatment using trametinib and mithramycin A to simultaneously inhibit the CSC phenotype and activities of several pathways in cancer cells. This study demonstrates the feasibility of therapeutic targeting of CSCs as a strategy to block tumorigenic activities of cancer cells.
引用
收藏
页码:724 / 734
页数:11
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