Transcriptomics

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RNA sequencing to identify differentially-expressed genes in HER3-depleted KatoII MET-amplified cancer cells


ABSTRACT: Receptor tyrosine kinases (RTKs) are recognized as targets of precision medicine in human cancer upon their gene amplification or constitutive activation, resulting in increased downstream signal complexity including heterotypic crosstalk with other RTKs. The Met hepatocyte growth factor RTK exhibits such reciprocal crosstalk with several members of the human EGFR (HER) family of RTKs when amplified in cancer cells. We observed that Met signaling converges on HER3 tyrosine phosphorylation across a panel of seven MET-amplified cancer cell lines and that HER3 is required for cancer cell expansion and oncogenic capacity in vitro and in vivo. In order to identify genes required for cancer cell proliferation in the MET-amplified setting whose expression, we stably transduced KatoII MET-amplified cells with shRNA targeting ERBB3, the gene encoding HER3. Stably-transduced cells were selected with puromycin, assayed for proliferative phenotype, and lysed for RNA extraction. Pooled libraries of total RNA were then sequenced using the Illumina HiSeq4000 platform, and differentially-expressed genes were identified from read counts normalized across samples. Differentially-expressed genes were further assayed for dependence on HER3 in other MET-amplified cell lines to identify genes recurrently dependent on HER3 in the MET-amplified setting.

ORGANISM(S): Homo sapiens

PROVIDER: GSE189461 | GEO | 2021/11/23

REPOSITORIES: GEO

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