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Expression data of glioblastoma cells with Crizotinib acute and chronic treatment vs its own vehicle control

ABSTRACT: Expression data of glioblastoma cells with Crizotinib acute and chronic treatment vs its own vehicle control

PROVIDER: PRJNA454685 | ENA |

REPOSITORIES: ENA

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Expression data of glioblastoma cells with Crizotinib acute and chronic treatment vs its own vehicle control

Project description:Gene expression of chronically or acutely Crizotinib treated glioblastoma cells vs vehicle controls

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Charaterization of genetic alterations and gene expression signatures found in erlotinib-resistant and erlotinib/crizotinib dual-resistant HCC827 subpopulations

Project description:The non-small cell lung cancer (NSCLC) cell line HCC827 harbors an activating EGFR mutation (exon 19 deletion) that confers sensitivity to the FDA-approved EGFR inhibitor erlotinib. By applying the ClonTracer barcoding system, we were able to show the presence of pre-existing sub-populations in HCC827 that contribute to erlotinib resistance. Prior studies implicated that MET amplification confers resistance to erlotinib in this cell line. Therefore we examined the effects of the c-Met inhibitor crizotinib on the barcoded HCC827 population when treated either sequentially or simultaneously with both inhibitors. Despite the significant reduction in barcode complexity, the erlotinib/crizotinib combination treatment failed to eradicate all of the resistant clones implying the presence of an erlotinib/crizotinib dual resistant subpopulation. We performed transcriptome profiling (RNA-seq) to elucidate the potential resistance mechanisms of the dual resistant subpopulation in comparison to vehicle-treated or single agent erlotinib-resistant HCC827 cell populations as controls. mRNA profiling of the subpopulations of human NSCLC cell line HCC827 that contribute to EGFR inhibitor erlotinib and MET inhibitor crizotinib resistance

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Project description:Utilizing primary, patient tumor-derived ROS1+ NSCLC cell lines, we derived TKI-resistant cell lines by chronic exposure to TKI in the media. One of our parental, ROS1 TKI-sensitive cell lines harbors a TPM3-ROS1 fusion (CUTO28) and the other harbors a CD74-ROS1 fusion (CUTO37). Entrectinib-resistant (-ER) and crizotinib-resistant (-CR) lines are so named when they are stably proliferating at 500nM concentration of the respective TKI. We sought to investigate transcriptome changes with acquired resistance to entrectinib or crizotinib.

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Gene expression profiles of an ALK-fusion driven cell line and its derivatives resistant to crizotinib alone or resistant to crizotinib plus afatinib

Project description:Despite the initial benefit of the tyrosine kinase inhibitors targeting ALK gene fusions in non-small cell lung cancer, resistance to ALK inhibitors is almost inevitable. To determine the acquired resistance mechanism to ALK inhibition, we generated crizotinib-resistant ALK lines by chronically treating H3122 cells (driven by EML4-ALK) with an ALK inhibitor, crizotinib for approximately 3 months. RNA-seq and differential expression analyses were performed to determine the transcriptional changes of H3122-CR cells in comparison to parental H3122 cells. Because we demonstrated EGFR could mediate the early adaptive resistance to crizotinib, we further explored the mechanism that contributes to the resistance to the combination of crizotinib and afatinib. H3122-CAR (crizotinib and afatinib-resistant) cells were generated by treating them with a combination of crizotinib and afatinib for approximately 6 months and then profiled by RNA-seq to determine the associated transcriptional reprogramming.

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Fasting potentiates the anticancer activity of Crizotinib

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