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Gene expression profiling during treatment of HT29 cells with selumetinib

ABSTRACT: Here, we investigate gene expression response of the BRAFV600E mutant cell line COLO205 to the MEK inhibitor selumetinib / AZD6244 / ARRY-142886. Although selumetinib causes long term G1 arrest, we observe cells stochastically entering the cell cycle without re-activation of ERK and initiation of a normal proliferative gene expression programme. Genes encoding DNA replication and repair factors are downregulated during G1 arrest, but many of these are transiently induced when cells escaping arrest enter S and G2. Nonetheless, mRNAs encoding key DNA replication factors including the MCM replicative helicase complex, PCNA and TIPIN remain at very low abundance.

ORGANISM(S): Homo sapiens

PROVIDER: GSE183859 | GEO | 2021/09/12

REPOSITORIES: GEO

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Gene expression profiling during treatment of COLO205 cells with selumetinib

Project description:Here, we investigate gene expression response of the BRAFV600E mutant cell line COLO205 to the MEK inhibitor selumetinib / AZD6244 / ARRY-142886. Although selumetinib causes long term G1 arrest, we observe cells stochastically entering the cell cycle without re-activation of ERK and initiation of a normal proliferative gene expression programme. Genes encoding DNA replication and repair factors are downregulated during G1 arrest, but many of these are transiently induced when cells escaping arrest enter S and G2. Nonetheless, mRNAs encoding key DNA replication factors including the MCM replicative helicase complex, PCNA and TIPIN remain at very low abundance.

2021-03-23 | GSE168602 | GEO

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Gene expression profiling during treatment of COLO205 cells with selumetinib

Project description:Gene expression profiling during treatment of COLO205 cells with selumetinib

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Project description:The purpose of this study is to determine whether treatment with Selumetinib (AZD6244) (Hyd-Sulfate) in combination with Irinotecan as a second treatment in patients with K-ras or B-raf mutation will prevent tumor progression and prolong progression free survival.

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Changes in mRNA Expression by schedule-dependent combination of 5-FU and selumetinib

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