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Identifying the intergenic ALK fusion LOC388942-ALK as a driver of non-small cell lung cancer

ABSTRACT: Identifying the intergenic ALK fusion LOC388942-ALK as a driver of non-small cell lung cancer

PROVIDER: PRJNA1228592 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR32506076_1.fastq.gz	Fastqsanger.gz
	SRR32506076_2.fastq.gz	Fastqsanger.gz
	SRR32506077_1.fastq.gz	Fastqsanger.gz
	SRR32506077_2.fastq.gz	Fastqsanger.gz
	SRR32506078_1.fastq.gz	Fastqsanger.gz

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Identifying the intergenic ALK fusion LOC388942-ALK as a driver of non-small cell lung cancer

Project description:ALK fusions, such as the classic EML4-ALK, are known drivers of lung cancer and effective therapeutic targets. However, variant ALK fusions, including intergenic fusions like LOC388942-ALK (LA), have been detected in increasing numbers of patients, with their roles in tumorigenesis and ALK inhibitor resistance remaining unclear. Using CRISPR/Cas9, we generated the LA fusion in A549 and H441 cells, confirming elevated ALK expression via qRT-PCR and immunohistochemistry (IHC) staining. Functional analyses showed that LA significantly promoted tumor growth in vitro and in vivo while conferring increased resistance to alectinib. RNA-seq revealed upregulation of the FOS pathway in LA tumors, identifying FOS as a potential therapeutic target. Subsequently, we demonstrated that FOS disruption and inhibition sensitized LA tumors to treatment. RNA-seq profiling demonstrated that FOS depletion in LOC388942-ALK tumor significantly downregulated multiple oncogenic pathways related to cell cycle progression, DNA replication fidelity, and extracellular matrix remodeling, suggesting a pivotal role of FOS in maintaining tumor growth. These findings establish LOC388942-ALK as a novel oncogenic driver in lung cancer, highlighting its role in tumor growth and ALK inhibitor resistance. Targeting FOS may provide a promising therapeutic strategy for tumors harboring this intergenic fusion.

2025-03-01 | GSE290536 | GEO

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

Affymetrix SNP array data for pulmonary adenocarcinomas with or without ALK fusion

Project description:ALK fusion positive tumor constitutes a unique entitiy in lung adenocarcionmas. We compared the allelokaryotypes of ALK fusion positive and negative tumors with SNP array to get insight into the difference of genomic background of them. Copy number analysis with Affymetrix 250K SNP arrays of 35 ALK fusion positive and 95 ALK fusion negative lung adenocarcinomas was performed with annonymous references.

2013-10-10 | E-GEOD-41536 | biostudies-arrayexpress

ALK fusion NSCLC oncogenes promote survival and inhibit NK cell responses via SERPINB4 expression

Project description:Anaplastic lymphoma kinase (ALK) fusion variants in non-small-cell-lung cancer (NSCLC) consist of numerous dimerising fusion partners, with the most common being EML4. Clinical data suggests that the degree of treatment benefit in response to ALK tyrosine kinase inhibitors (TKIs) differs among the variant present in the patient tumor. Therefore, a better understanding the oncogenic signaling networks driven by different ALK-fusion variants is important. Here, we developed highly controlled doxycycline-inducible cell models bearing four different ALK fusion proteins, namely EML4-ALK-V1, EML4-ALK-V3, KIF5B-ALK, and TFG-ALK, in the context of non-tumorigenic NL20 human bronchial epithelial cells. These were complimented by patient-derived NSCLC cell lines harboring either EML4-ALK-V1 or EML4-ALK-V3 fusions. RNAseq and phosphoproteomics analysis were employed to identify dysregulated genes and hyper/hypo-phosphorylated proteins associated with ALK fusion expression. Among ALK fusion induced responses, we noted a robust inflammatory signature that included up-regulation of the Serpin B4 serine protease inhibitor in both NL20-inducible cell models and ALK-positive NSCLC patient-derived cell lines. We show that STAT3 is a major transcriptional regulator of SERPINB4 downstream of ALK fusions, along with NF-B and AP1. The upregulation of SERPINB4 promotes survival of ALK fusion expressing cells and inhibits natural killer (NK) cell-mediated cytotoxicity. In conclusion, our study reveals a novel ALK downstream survival axis that regulates Serpin B4 expression and identifies a molecular target that has potential for therapeutic impact targeting the immune response together with ALK TKIs in NSCLC.

2023-02-16 | PXD035100 | Pride

Affymetrix SNP array data for pulmonary adenocarcinomas with or without ALK fusion

2013-10-10 | GSE41536 | GEO

Integrative analysis identifies lincRNAs up- and downstream of neuroblastoma driver genes (ALK)

Project description:Long intergenic non-coding RNAs (lincRNAs) are emerging as integral components of signaling pathways in various cancer types. In neuroblastoma, only a handful of lincRNAs are known as upstream regulators or downstream effectors of oncogenes. Here, we exploit RNA sequencing data of primary neuroblastoma tumors, neuroblast precursor cells, neuroblastoma cell lines and various cellular perturbation model systems to define the neuroblastoma lincRNome and map lincRNAs up- and downstream of neuroblastoma driver genes MYCN, ALK and PHOX2B. Each of these driver genes controls the expression of a particular subset of lincRNAs, several of which are associated with poor survival and are differentially expressed in neuroblastoma tumors compared to neuroblasts. By integrating RNA sequencing data from both primary tumor tissue and cancer cell lines, we demonstrate that several of these lincRNAs are expressed in stromal cells. Deconvolution of primary tumor gene expression data revealed a strong association between stromal cell composition and driver gene status, resulting in differential expression of these lincRNAs. We also explored lincRNAs that putatively act upstream of neuroblastoma driver genes, either as presumed modulators of driver gene activity, or as modulators of effectors regulating driver gene expression. This analysis revealed strong associations between the neuroblastoma lincRNAs MIAT and MEG3 and MYCN and PHOX2B activity or expression. Together, our results provide a comprehensive catalogue of the neuroblastoma lincRNome, highlighting lincRNAs up- and downstream of key neuroblastoma driver genes. This catalogue forms a solid basis for further functional validation of candidate neuroblastoma lincRNAs.

2018-12-28 | GSE124450 | GEO

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

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

| PRJEB50074 | ENA

ChIP-seq for identifying molecules associated with epithelial-mesenchymal transition and acquired resistance to ALK inhibitors

Project description:Treatment with ALK tyrosine kinase inhibitors often elicits profound initial antitumor responses in ALK fusion-positive patients with lung adenocarcinoma. However, patients invariably develop acquired resistance to ALK inhibitors. In this study, we aimed to identify molecular events that limit the response to ALK inhibition using genetic and epigenetic approaches. To identify novel mechanisms of acquired resistance to ALK inhibitors, we established in vitro models of acquired resistance to ceritinib using H3122 cell. For in vitro model, H3122 parental cells, ceritinib-treated resistant cells, and non-resistant cells that combinely treated with certinib and panobinostat were used for ChIP-seq analysis.

2018-05-28 | GSE81482 | GEO

Methylation profiling study by MBD-seq for identifying genes associated with epithelial-mesenchymal transition and acquired resistance to ALK inhibitors

2018-05-28 | GSE81483 | 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).

2014-07-14 | GSE49508 | GEO

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