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DUSP6 inhibition overcomes Neuregulin/HER3-driven therapy resistance in HER2+ breast cancer [MDA]

ABSTRACT: To investigate transcriptomic changes regulated by DUSP6 in a HER2+ breast cancer cell line We performed gene expression profiling analysis using data obtained from RNA-seq of SCR vs DUSP6 KD MDA-MB-453 cells

ORGANISM(S): Homo sapiens

PROVIDER: GSE231524 | GEO | 2024/04/13

REPOSITORIES: GEO

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DUSP6 inhibition overcomes Neuregulin/HER3-driven therapy tolerance in HER2+ breast cancer

Project description:Despite clinical benefits of tyrosine kinase inhibitors (TKIs) in cancer, most tumors can reactivate proliferation under TKI therapy. Here we present transcriptional profiling of HER2+ breast cancer cells transitioning from dormant drug tolerant cells to re-proliferating cells under continuous HER2 inhibitor (HER2i) therapy. Focusing on phosphatases, expression of dual-specificity phosphatase DUSP6 was found inhibited in dormant cells, but strongly induced upon re-growth. DUSP6 expression also selectively associated with poor patient survival in HER2+ breast cancers. DUSP6 overexpression conferred apoptosis resistance, whereas its pharmacological blockade prevented therapy tolerance development under HER2i therapy. DUSP6 targeting also synergized with clinically used HER2i combination therapies. Mechanistically DUSP6 is a positive regulator of HER3 expression, and its impact on HER2i tolerance was mediated by neuregulin-HER3 axis. In vivo, genetic targeting of DUSP6 reduced tumor growth in brain metastasis model, whereas its pharmacological targeting induced synthetic lethal therapeutic effect in combination with HER2i. Collectively this work demonstrates that DUSP6 drives escape from HER2i-induced dormancy, and that DUSP6 is a druggable target to overcome HER3-driven TKI resistance.

| S-SCDT-10_1038-S44321-024-00088-0 | biostudies-other

DUSP6 inhibition overcomes neuregulin/HER3-driven therapy tolerance in HER2+ breast cancer

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-04-12 | GSE231526 | GEO

DUSP6 inhibition overcomes Neuregulin/HER3-driven therapy resistance in HER2+ breast cancer [BT474]

Project description:To investigate transcriptomic changes during development of resistance to lapatinib in a HER2+ breast cancer cell line We performed gene expression profiling analysis using data obtained from RNA-seq of 4 different stage of development of lapatinib resistance in a HER2+ breast cancer cell line

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Gene expression data of BCR-ABL1 transformed B cell precursors from Dusp6 wild-type and Dusp6 knockout mice

Project description:To elucidate the mechanism of Dusp6-mediated pre-B cell survival signaling, we investigated the gene expression pattern in BCR-ABL1-transformed Dusp6+/+ and Dusp6-/- B cell precursors. BCR-ABL1 transformed B cell precursors of Dusp6 wildtype and Dusp6 knockout mice were subjected to RNA isolation

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Phospho-proteomic analysis of DUSP6 deficient Caco-2 cells

Project description:Dual-specificity phosphatase 6 (Dusp6)-deficiency enhances baseline colon barrier integrity and confers amelioration of dextran sulfate sodium (DSS)-induced colonic injury. DUSP6 is a phosphatase, and therefore it is plausible that DUSP6 knockout alters the phosphorylation status of other proteins. To access the protein phosphorylation landscape and functional network in DUSP6 deficient Caco-2 cells, we applied phosphopeptide enrichment and isobaric labeling strategies with MS-based proteomics, and identified 1323 phosphorylation sites on 580 phosphoproteins.

2021-11-02 | PXD029014 | Pride

Gene expression data of BCR-ABL1 transformed B cell precursors from Dusp6 wild-type and Dusp6 knockout mice

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Effect of DUSP6 overexpression or knockdown on gene expression in AML12 cells

Project description:DUSP6 plays important roles in MAPK signaling pathway, but whether and how it is involved in liver funciton remains to be explored. Here, we performed RNA-seq analyses in AML12 cells where DUSP6 is disrupted. We overexpressed GFP-DUSP6 or GFP in AML12 cells, and tested the effects of DUSP6 increase on gene expression in AML12 cells. Meanwhile, we knocked down DUSP6 in AML12 cells and tested the effects of DUSP6 decrease on gene expression in AML12 cells. Taken together, we analyzed the changes of gene expression mediated by DUSP6, which provides new insights for the function of DUSP6 in liver

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DUSP6 mediates resistance to JAK2 inhibition and drives leukemic progression (microarray)

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2022-10-25 | GSE214360 | GEO

RNA sequencing analysis of WT and Dusp6-/- rat cardiac infiltrated macrophages transcriptomes

Project description:Dual-specificity phosphatase 6 (DUSP6), a member of MAPK phosphatase, serves a specific and conserved function on the dephosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2) in multiple species. Utilizing a rat strain harboring nonsense mutation of Dusp6, we found that Dusp6 deficiency improves cardiac function by attenuating cardiomyocyte death and fibrosis in acute inflammatory phase after MI. To investigate the effect of DUSP6 on macrophages in acute inflammatory phase of MI, we performed RNA-seq analysis using CD45+HIS36+ macrophages isolated from Dusp6-deficient and WT infarcted LV tissues 72 h after MI by fluorescent activated cell sorting (FACS).

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DUSP6 mediates resistance to JAK2 inhibition and drives leukemic progression (RNA-Seq)

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