Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1012098 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR25879419_1.fastq.gz | Fastqsanger.gz | |||
| SRR25879419_2.fastq.gz | Fastqsanger.gz | |||
| SRR25879420_1.fastq.gz | Fastqsanger.gz | |||
| SRR25879420_2.fastq.gz | Fastqsanger.gz | |||
| SRR25879421_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 58 |
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Project description:Interventions: Case series:None
Primary outcome(s): exon genes;transcriptional expression;proteome;protein phosphorylation group
Study Design: Sequential
| 2739647 | ecrin-mdr-crc
Project description:To better understand the signaling complexity of AXL, a member of the TAM family of receptor tyrosine kinases, we created a physical and functional map of AXL signaling interactions, phosphorylation events, and target-engagement of three AXL tyrosine kinase inhibitors (TKI). We assessed AXL protein-complexes using BioID, effects of AXL TKI on global phosphoproteins using mass spectrometry, and target engagement of AXL TKI using activity-based protein profiling. BioID identifies AXL-interacting proteins that are mostly involved in cell adhesion/migration. Global phosphoproteomics reveal that AXL inhibition deregulates phosphorylation of peptides involved in phosphatidylinositol-mediated signaling and cell adhesion/migration. Comparison of three AXL inhibitors reveals that TKI RXDX-106 inhibits pAXL, pAKT and migration/invasion of these cells without reducing their viability, while Bemcentinib exerts AXL-independent phenotypic effects. Proteomic characterization of these TKIs reveals that they inhibit diverse targets in addition to AXL, with Bemcentinib having the most off-targets. AXL and EGFR TKI co-treatment did not reverse resistance in cell line models of Erlotinib resistance. However, a unique vulnerability was identified in one persister clone, wherein combination of Bemcentinib and Erlotinib inhibited cell viability and signaling. We also show that AXL is overexpressed in ~30-40% of NSCLC but rarely in SCLC. NSCLC cells have a wide range of AXL protein expression, with basal activation detected rarely. Overall, we evaluate the mechanisms of action of AXL in lung cancer which can be used to establish assays to measure drug targetable active AXL complexes in patient tissues and inform the strategy for targeting its signaling network as an anticancer therapy.
2022-10-14 | PXD023911 | Pride
Project description:To better understand the signaling complexity of AXL, a member of the TAM family of receptor tyrosine kinases, we created a physical and functional map of AXL signaling interactions, phosphorylation events, and target-engagement of three AXL tyrosine kinase inhibitors (TKI). We assessed AXL protein-complexes using BioID, effects of AXL TKI on global phosphoproteins using mass spectrometry, and target engagement of AXL TKI using activity-based protein profiling. BioID identifies AXL-interacting proteins that are mostly involved in cell adhesion/migration. Global phosphoproteomics reveal that AXL inhibition deregulates phosphorylation of peptides involved in phosphatidylinositol-mediated signaling and cell adhesion/migration. Comparison of three AXL inhibitors reveals that TKI RXDX-106 inhibits pAXL, pAKT and migration/invasion of these cells without reducing their viability, while Bemcentinib exerts AXL-independent phenotypic effects. Proteomic characterization of these TKIs reveals that they inhibit diverse targets in addition to AXL, with Bemcentinib having the most off-targets. AXL and EGFR TKI co-treatment did not reverse resistance in cell line models of Erlotinib resistance. However, a unique vulnerability was identified in one persister clone, wherein combination of Bemcentinib and Erlotinib inhibited cell viability and signaling. We also show that AXL is overexpressed in ~30-40% of NSCLC but rarely in SCLC. NSCLC cells have a wide range of AXL protein expression, with basal activation detected rarely. Overall, we evaluate the mechanisms of action of AXL in lung cancer which can be used to establish assays to measure drug targetable active AXL complexes in patient tissues and inform the strategy for targeting its signaling network as an anticancer therapy.
2022-10-14 | PXD023923 | Pride
Project description:To better understand the signaling complexity of AXL, a member of the TAM family of receptor tyrosine kinases, we created a physical and functional map of AXL signaling interactions, phosphorylation events, and target-engagement of three AXL tyrosine kinase inhibitors (TKI). We assessed AXL protein-complexes using BioID, effects of AXL TKI on global phosphoproteins using mass spectrometry, and target engagement of AXL TKI using activity-based protein profiling. BioID identifies AXL-interacting proteins that are mostly involved in cell adhesion/migration. Global phosphoproteomics reveal that AXL inhibition deregulates phosphorylation of peptides involved in phosphatidylinositol-mediated signaling and cell adhesion/migration. Comparison of three AXL inhibitors reveals that TKI RXDX-106 inhibits pAXL, pAKT and migration/invasion of these cells without reducing their viability, while Bemcentinib exerts AXL-independent phenotypic effects. Proteomic characterization of these TKIs reveals that they inhibit diverse targets in addition to AXL, with Bemcentinib having the most off-targets. AXL and EGFR TKI co-treatment did not reverse resistance in cell line models of Erlotinib resistance. However, a unique vulnerability was identified in one persister clone, wherein combination of Bemcentinib and Erlotinib inhibited cell viability and signaling. We also show that AXL is overexpressed in ~30-40% of NSCLC but rarely in SCLC. NSCLC cells have a wide range of AXL protein expression, with basal activation detected rarely. Overall, we evaluate the mechanisms of action of AXL in lung cancer which can be used to establish assays to measure drug targetable active AXL complexes in patient tissues and inform the strategy for targeting its signaling network as an anticancer therapy.
2022-10-14 | PXD023913 | Pride
Project description:Triple negative breast cancer (TNBC) is histologically characterized by the absence of the hormone receptors estrogen and progesterone, in addition to having a negative immunostain for HER-2. The aggressiveness of this disease and lack of targeted therapeutic options for treatment is of high clinical importance. MicroRNAs are short 21- to 23 nucleotide endogenous non-coding RNAs that regulate gene expression by binding to mRNA transcripts, resulting in either decreased protein translation or mRNA degradation. Dysregulated expression of miRNAs is now a hallmark of many human cancers. In order to identify a miRNA/mRNA interaction that is biologically relevant to the triple negative breast cancer genotype/phenotype, we initially conducted a miRNA profiling experiment to detect differentially expressed miRNAs in cell line models representing the triple negative (MDA-MB-231), ER+ (MCF7), and HER-2 overexpressed (SK-BR-3) histotypes. We identified human miR-34a expression as being >3-fold down (from its median expression value across all cell lines) in MDA-MB-231 cells, and identified AXL as a putative mRNA target using multiple miRNA/target prediction algorithms. The miR-34a/AXL interaction was functionally characterized through ectopic overexpression experiments with a miR-34a mimic. In reporter assays, miR-34a binds to the putative target site within the AXL 3’UTR to affect luciferase expression. We also observed degradation of AXL mRNA and decreased AXL protein levels, as well as cell signaling effects on AKT phosphorylation and phenotypic effects on cell migration. Finally, we present an inverse correlative trend in miR-34a and AXL expression for both cell line and patient tumor samples.
2010-12-31 | GSE21719 | GEO
Project description:Untargeted metabolomics and flux data of E. coli phosphorylation site mutants. Sample description is included in Phosphomutants_file_description.xlsx.
2021-07-12 | MSV000087795 | GNPS
Project description:Aberrant expression of receptor tyrosine kinase AXL is linked to metastasis. AXL can be activated by its ligand GAS6 or by other kinases, but the signaling pathways conferring its metastatic activity are unknown. Here, we define the AXL-regulated phosphoproteome in breast cancer cells. We reveal that AXL stimulates the phosphorylation of a network of focal adhesion (FA) proteins culminating in faster FA disassembly. Mechanistically, AXL phosphorylate NEDD9 leading to its binding to CRKII which in turn associates with and orchestrates the phosphorylation of the pseudo-kinase PEAK1. We find that PEAK1 is in complex with the tyrosine kinase CSK to mediate the phosphorylation of PAXILLIN. Uncoupling of PEAK1 from AXL signaling decreases metastasis in vivo, but not tumor growth. Our results uncover a contribution of AXL signaling to FA dynamics, reveal a long sought-after mechanism underlying AXL metastatic activity, and identify PEAK1 as a therapeutic target in AXL positive tumors.
2020-04-15 | MSV000085293 | MassIVE
Project description:Triple negative breast cancer (TNBC) is histologically characterized by the absence of the hormone receptors estrogen and progesterone, in addition to having a negative immunostain for HER-2. The aggressiveness of this disease and lack of targeted therapeutic options for treatment is of high clinical importance. MicroRNAs are short 21- to 23 nucleotide endogenous non-coding RNAs that regulate gene expression by binding to mRNA transcripts, resulting in either decreased protein translation or mRNA degradation. Dysregulated expression of miRNAs is now a hallmark of many human cancers. In order to identify a miRNA/mRNA interaction that is biologically relevant to the triple negative breast cancer genotype/phenotype, we initially conducted a miRNA profiling experiment to detect differentially expressed miRNAs in cell line models representing the triple negative (MDA-MB-231), ER+ (MCF7), and HER-2 overexpressed (SK-BR-3) histotypes. We identified human miR-34a expression as being >3-fold down (from its median expression value across all cell lines) in MDA-MB-231 cells, and identified AXL as a putative mRNA target using multiple miRNA/target prediction algorithms. The miR-34a/AXL interaction was functionally characterized through ectopic overexpression experiments with a miR-34a mimic. In reporter assays, miR-34a binds to the putative target site within the AXL 3’UTR to affect luciferase expression. We also observed degradation of AXL mRNA and decreased AXL protein levels, as well as cell signaling effects on AKT phosphorylation and phenotypic effects on cell migration. Finally, we present an inverse correlative trend in miR-34a and AXL expression for both cell line and patient tumor samples. Comparison of the changes in gene expression as a result of transfections with miR-34a mimic molecules (representing two different vendors; Qiagen and Dharmacon) in MDA-MB-231 cells.
2010-12-31 | GSE21832 | GEO
Project description:The crizotinibâresistant ALKF1174L mutation arises de novo in neuroblastoma (NB) and is acquired in ALK translocation-driven cancers, lending impetus to the development of novel ALK inhibitors with different modes of action. The diaminopyrimidine TAE684 and its derivative ceritinib (LDK378), which are structurally distinct from crizotinib, are active against NB cells expressing ALKF1174L. Here we demonstrate acquired resistance to TAE684 and LDK378 in ALKF1174L-driven human NB cells that is linked to overexpression and activation of the AXL tyrosine kinase and epithelial-to-mesenchymal transition (EMT). AXL phosphorylation conferred TAE684 resistance to NB cells through upregulated ERK signaling. Inhibition of AXL partly rescued TAE684 resistance, resensitizing these cells to this compound. AXL activation in resistant cells was mediated through increased expression of the active form of its ligand, GAS6, which also served to stabilize the AXL protein. Although ectopic expression of AXL and TWIST2 individually in TAE684-sensitive parental cells led to the elevated expression of mesenchymal markers and invasive capacity, only AXL overexpression induced resistance to TAE684 as well. TAE684-resistant cells showed greater sensitivity to HSP90 inhibition than did their parental counterparts, with downregulation of AXL and AXL-mediated ERK signaling. Our studies indicate that aberrant AXL signaling and development of an EMT phenotype underlie resistance of ALKF1174L-driven NB cells to TAE684 and its derivatives. We suggest that the combination of ALK and AXL or HSP90 inhibitors be considered to delay the emergence of such resistance. In order to understand the molecular mechanisms driving resistance to ALK inhibition in ALK-mutated neuroblatoma, we established cell line models of resistance to TAE684, an ALK inhibitor, by treating SH-SY5Y cells (bearing the ALKF1174L mutation) with increasing concentration of this compound over time. We then performed an analysis of gene expression changes genome wide using Affymetrix U133 Plus 2 arrays, by comparing the TAE684-sensitive parental SH-SY5Y cells to the TAE684-resistant SH-SY5Y cells (named SY5Y-TR1). For that experiment, we analyzed gene expression variations by comparing the parental SH-SY5Y (control sample) to the resistant SY5Y-TR1 cells. So 2 samples were analyzed, with 3 replicates run for each.
2015-11-21 | E-GEOD-73292 | biostudies-arrayexpress
Project description:Triple negative breast cancer (TNBC) is histologically characterized by the absence of the hormone receptors estrogen and progesterone, in addition to having a negative immunostain for HER-2. The aggressiveness of this disease and lack of targeted therapeutic options for treatment is of high clinical importance. MicroRNAs are short 21- to 23 nucleotide endogenous non-coding RNAs that regulate gene expression by binding to mRNA transcripts, resulting in either decreased protein translation or mRNA degradation. Dysregulated expression of miRNAs is now a hallmark of many human cancers. In order to identify a miRNA/mRNA interaction that is biologically relevant to the triple negative breast cancer genotype/phenotype, we initially conducted a miRNA profiling experiment to detect differentially expressed miRNAs in cell line models representing the triple negative (MDA-MB-231), ER+ (MCF7), and HER-2 overexpressed (SK-BR-3) histotypes. We identified human miR-34a expression as being >3-fold down (from its median expression value across all cell lines) in MDA-MB-231 cells, and identified AXL as a putative mRNA target using multiple miRNA/target prediction algorithms. The miR-34a/AXL interaction was functionally characterized through ectopic overexpression experiments with a miR-34a mimic. In reporter assays, miR-34a binds to the putative target site within the AXL 3’UTR to affect luciferase expression. We also observed degradation of AXL mRNA and decreased AXL protein levels, as well as cell signaling effects on AKT phosphorylation and phenotypic effects on cell migration. Finally, we present an inverse correlative trend in miR-34a and AXL expression for both cell line and patient tumor samples. Comparison of the changes in gene expression as a result of transfections with miR-34a mimic molecules (representing two different vendors; Qiagen and Dharmacon) in MDA-MB-231 cells. MDA-MB-231 cells were transfected in 6-well dishes (600,000 cells) with either AllStar negative control, Qmimic, or Dmimic at 10 nM final concentration using Lipofectamine™ 2000 (Invitrogen; Carlsbad, CA). All transfections were performed in triplicate. Forty-eight hours post-transfection, total RNA was isolated from each sample using Qiagen’s miRNeasy extraction kit (Qiagen; Germantown, MD). Total RNA samples were sent to the Laboratory of Molecular Technology (National Cancer Institute at Frederick; Frederick, MD), for processing on Affymetrix GeneChip Human Genome U133 Plus 2.0 microarrays (Affymetrix; Santa Clara, CA). Expression values were normalized using Robust Multichip Averaging (RMA). Only gene probes (AllStar vs. Mimic) that passed a log2 1.5-fold change, p < 0.05 threshold using an Empirical Bayes moderated t statistics with a Benjamini-Hochberg correction for the false discovery rate were reported. All analyses were performed with Bioconductor packages AFFYGUI and LIMMA on a R environment.
2010-12-31 | E-GEOD-21832 | biostudies-arrayexpress