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Expression data from EML4-ALK overexpression in HEK293 cell line and EML4-ALK knockdown in H2228 lung cancer cell line.

ABSTRACT: We demonstrate that EML4-ALK siRNAs significantly reduced cell viability in EML4-ALK postive lung cancer cell lines,while overexpression of EML4-ALK increased cell viability in HEK293 cells in vitro. The aim of this study was to analyze the EML4-ALK regulated gene expression in lung cancer.

ORGANISM(S): Homo sapiens

PROVIDER: GSE174772 | GEO | 2021/05/20

REPOSITORIES: GEO

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Expression data from IL4 treatment in EML4-ALK-positive lung cancer cells.

Project description:We demonstrate that STAT3 and STAT6 significantly activated after IL4 treatment in EML4-ALK postive lung cancer cell lines The aim of this study was to explore whether IL4 could activate the JAK2-STAT pathway in EML4-ALK-positive cells.

2021-05-19 | GSE174596 | GEO

Expression data from EML4-ALK overexpression in HEK293 cell line and EML4-ALK knockdown in H2228 lung cancer cell line.

Project description:Expression data from EML4-ALK overexpression in HEK293 cell line and EML4-ALK knockdown in H2228 lung cancer cell line.

| PRJNA731500 | ENA

RNA-seq of human NSCL cell lines with induced fusion genes; ALK-EML4-V1, ALK-EML4-V3, ALK-TFG, ALK-KIF5B

Project description:To characterize the effects of common ALK fusion genes, we performed a comprehensive RNA-Seq analysis of NL20 cells induced with ALK-EML4-V1, ALK-EML4-V3, ALK-TFG, ALK-KIF5B, using Doxycycline

2022-12-18 | E-MTAB-11304 | biostudies-arrayexpress

Gene Changes Following in vitro Alectinib Treatment in EML4-ALK Murine NSCLC Cells

Project description:First line treatment for EML4-ALK fusion-positive lung cancer patient is the use of an ALK tyrosine kinase inhibitor (TKI), such as alectinib. While most patients initially respond to this therapy, many patients often develop relapse, and efficacious therapies for patients with relapse disease are limited. To study EML4-ALK fusion-positive lung cancer, novel murine lung cancer cell lines were generated from C57BL/6 mice using an intratracheally injected Adeno-virus that contains Cas9 and guide RNAs for the EML4-ALK translocation, which leads to the development of lung tumors. Cell lines were derived from these tumors. In an effort to better understand how cells respond to alectinib, we treated EML4-ALK-positive murine cell lines (EA1, EA2, and EA3 cells) in vitro for 1-7 days with either 100nM alectinib or DMSO-control. At each time point, RNA was isolated from each condition. RNA was submitted to RNA-seq. Differential analysis on the RNA-seq data was performed to determine and track gene changes over time between control and treated cells. These data will allow us to better develop novel therapeutics to use in conjunction with alectinib when treating EML4-ALK fusion-positive patients.

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Vulnerability of drug-resistant EML4-ALK rearranged lung cancer to transcriptional inhibition

Project description:A subset of lung adenocarcinomas is driven by the EML4-ALK translocation. Despite excellent initial responses in patients, acquired resistance to ALK inhibitors occurs. Exploring these mechanisms of resistance, we found that EML4-ALK cells resistant to ALK inhibitors are remarkably sensitive to THZ1, alvocidib or dinaciclib. These compounds robustly induce apoptosis through transcriptional inhibition and downregulation of anti-apoptotic genes. In conclusion, this study shows that THZ1, alvocidib or dinaciclib could be a therapeutic option for a subset of patients with acquired resistance to first, second and third-generation ALK inhibitors.

2019-12-15 | E-MTAB-8563 | biostudies-arrayexpress

Vulnerability of drug-resistant EML4-ALK rearranged lung cancer to transcriptional inhibition

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EML4-ALK transgenic mouse lung normal tissue vs. lung tumor tissue

Project description:Gene expression profile of lung tumor tissues from EML4-ALK transgenic mouse (generous gift from Prof. H. Mano, Univ. of Tokyo) compared with lung normal tissues

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EML4-ALK induces cellular senescence in mortal normal human cells and promotes anchorage-independent growth in hTERT-transduced normal human cells

Project description:Background: Chromosomal inversions involving anaplastic lymphoma kinase (ALK) and echinoderm microtubule associated protein like 4 (EML4) generate a fusion protein EML4-ALK in non-small cell lung cancer (NSCLC). The understanding of EML4-ALK function can be improved by a functional study using normal human cells. Methods: Here we for the first time conduct such study to examine the effects of EML4-ALK on cell proliferation, cellular senescence, DNA damage, gene expression profiles and transformed phenotypes. Results: The lentiviral expression of EML4-ALK in mortal, normal human fibroblasts caused, through its constitutive ALK kinase activity, an early induction of cellular senescence with accumulated DNA damage, upregulation of p16INK4A and p21WAF1, and senescence-associated -galactosidase (SA-β-gal) activity. In contrast, when EML4-ALK was expressed in normal human fibroblasts transduced with telomerase reverse transcriptase (hTERT), which is activated in the vast majority of NSCLC, the cells showed accelerated proliferation and acquired anchorage-independent growth ability in soft-agar medium, without accumulated DNA damage, chromosome aberration, nor p53 mutation. EML4-ALK induced the phosphorylation of STAT3 in both mortal and hTERT-transduced cells, but RNA sequencing analysis suggested that the different signaling pathways contributed to the different phenotypic outcomes in these cells. While EML4-ALK also induced anchorage-independent growth in hTERT-immortalized human bronchial epithelial cells in vitro, the expression of EML4-ALK alone did not cause detectable in vivo tumorigenicity in immunodeficient mice. Conclusions: Our data indicate that the expression of hTERT is critical for EML4-ALK to manifest its in vitro transforming activity in human cells. This study provides the isogenic pairs of human cells with and without EML4-ALK expression.

2021-01-20 | GSE165137 | GEO

Alectinib-resistant NSCLC harboring EML4-ALK cells: Parental vs. Alectinib-resistant

Project description:Transcriptional profiling of NSCLC harboring EML4-ALK comparing parental H2228 cells with alectinib resistant H2228 cells.

2015-09-18 | GSE73167 | GEO

Analysis of ALK TKI sensitive and ALK TKI resistant isogenic pairs of H3122 (EML4-ALK E13;A20) cells

Project description:Starting with H3122 cells, which harbor the EML4-ALK E13;A20 fusion and are known to be sensitive to ALK tyrosine kinase inhibitors, we generated isogenic pairs of ALK TKI sensitive and ALK TKI resistant cell lines using established methods (see Chmeliecki, J et al Science Trans Med 2011). We modeled resistance against the currently FDA approved ALK TKI, crizotinib (also called PF-1066). We also modeled resistance against a novel more potent ALK inhibitor, X-376 (ref: Lovly, CM et al Cancer Research 2011). We compared gene expression profiles between the 'parental' (ALK TKI sensitive) H3122 cells and the drug resistant cells (H3122 CR for Crizotinib resistant cells and H3122 XR for X-376 resistant cells).

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