2023-09-22 シンガポール国立大学(NUS)
◆これらの「機械的に耐久性がある」細胞は、DNA修復機構が強化され、悪性度が高く、化学療法に対する抵抗性も示しました。この研究は、がん治療の新しいアプローチを提供し、診断方法の開発にも寄与する可能性があります。
<関連情報>
- https://news.nus.edu.sg/when-cancer-takes-a-deadly-turn/
- https://onlinelibrary.wiley.com/doi/full/10.1002/advs.202201663
機械的変形が、増殖と化学療法抵抗性を増強したメカノレジリエントながん細胞を選択する Deleterious Mechanical Deformation Selects Mechanoresilient Cancer Cells with Enhanced Proliferation and Chemoresistance
Kuan Jiang, Su Bin Lim, Jingwei Xiao, Doorgesh Sharma Jokhun, Menglin Shang, Xiao Song, Pan Zhang, Lanfeng Liang, Boon Chuan Low, G.V. Shivashankar, Chwee Teck Lim
Advanced Science Published: 23 May 2023
DOI:https://doi.org/10.1002/advs.202201663
Abstract
Cancer cells in secondary tumors are found to form metastases more efficiently as compared to their primary tumor counterparts. This is partially due to the unfavorable microenvironments encountered by metastasizing cancer cells that result in the survival of a more metastatic phenotype from the original population. However, the role of deleterious mechanical stresses in this change of metastatic potential is unclear. Here, by forcing cancer cells to flow through small capillary-sized constrictions, it is demonstrated that mechanical deformation can select a tumor cell subpopulation that exhibits resilience to mechanical squeezing-induced cell death. Transcriptomic profiling reveals up-regulated proliferation and DNA damage response pathways in this subpopulation, which are further translated into a more proliferative and chemotherapy-resistant phenotype. These results highlight a potential link between the microenvironmental physical stresses and the enhanced malignancy of metastasizing cancer cells which may be utilized as a therapeutic strategy in preventing the metastatic spread of cancer cells.
