作者: Pol Gimenez-Xavier , Eva Pros , Ester Bonastre , Sebastian Moran , Ana Aza
DOI: 10.1158/1535-7163.MCT-17-0104
关键词: Molecular biology 、 Lung cancer 、 DNA methylation 、 Gene 、 PI3K/AKT/mTOR pathway 、 Regulation of gene expression 、 Biology 、 Erlotinib 、 Gene expression 、 Tyrosine kinase
摘要: The development of resistance to tyrosine kinase inhibitors (TKI) limits the long-term efficacy cancer treatments involving them. We aimed understand mechanisms that underlie acquired (AR) MET in lung cancer. EBC1 cells, which have amplification and are sensitive TKIs against MET, were used generate multiple clones with AR a MET-TKI. Whole-exome sequencing, RNA global DNA methylation analysis scrutinize genetic molecular characteristics resistant cells. MET-TKI involved changes common all is, phenotypic modifications, specific gene expression, reactivation AKT, ERK, mTOR. methylation, mutational profiles distinguished at least two groups In one these, cells sensitivity erlotinib, concomitantly mutations KIRREL, HDAC11, HIATL1, MAPK1IP1L genes, among others. other group, some inactivation neurofibromatosis type 2 (NF2) strong overexpression NRG1 profile includes LMLN TOMM34 Multiple independent simultaneous strategies lead MET-TKIs erlotinib supports known crosstalk between HER family receptors. For first time, we show NF2 during acquisition may explain refractoriness these Mol Cancer Ther; 16(7); 1366-76. ©2017 AACR.