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Matrix stiffness modulates ILK-mediated YAP activation to control the drug resistance of breast cancer cells.
Biochim Biophys Acta Mol Basis Dis ; 1866(3): 165625, 2020 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-31785406
ABSTRACT
One of the hallmarks of cancer progression is strong drug resistance during clinical treatments. The tumor microenvironment is closely associated with multidrug resistance, the optimization of tumor microenvironments may have a strong therapeutic effect. In this study, we configured polyacrylamide hydrogels of varying stiffness [low (10 kPa), intermediate (38 kPa) and high (57 kPa)] to simulate tissue physical matrix stiffness across different stages of breast cancer. After treatment with doxorubicin, cell survival rates on intermediate stiffness substrate are significantly higher. We find that high expression of ILK and YAP reduces the survival rates of breast cancer patients. Drug resistance is closely associated with the inactivation of the hippo pathway protein Merlin/MST/LATS and the activation of YAP. These results not only highlight the understanding of drug resistance mechanisms but also serve as a new basis for developing breast cancer treatment delivery systems.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Biochim Biophys Acta Mol Basis Dis Ano de publicação: 2020 Tipo de documento: Artigo