Transcriptomics

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Gene expression profiling during treatment of COLO205 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: GSE168602 | GEO | 2021/03/23

REPOSITORIES: GEO

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