Transcriptome changes after NEN treament in neuroblastoma cell
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE209801 | GEO | 2022/10/26
REPOSITORIES: GEO
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Project description:Transcriptome changes after NEN treament in neuroblastoma cell
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Project description:Genome wide DNA methylation profiling of neuroblastoma cell SK-N-BE(2) treated by 1µM NEN under normoxia and hypoxia for 24hrs. The IInfinium Human MethylationEPIC BeadChip v1.0 B5 was used to obtain DNA methylation profiles across approximately 850,000 methylation sites in the genome of neuroblastoma. Samples included 4 group with 3 biological replicates: (1) normoxia_CTRL (2) normoxia_NEN (3) hypoxia_CTRL (4) hypoxia_NEN
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Project description:Hepatocellular carcinoma (HCC) is a fatal malignancy with a dismal prognosis. The recent advances in genomics and transcriptomics have led to large volumes of molecular data for HCC, providing an unprecedented opportunity to translate these data into more effective therapeutics. By creating HCC gene expression signatures and comparing with drug response signatures from multiple datasets, we identified four antihelminthics (from over 1000 FDA-approved drugs) that can reverse the HCC disease gene expression. Among these four, niclosamide was the top hit, which we further evaluated in clinically relevant HCC cell lines and patient-derived xenografts (PDX). Given the poor water-solubility and limited systemic bioavailability of niclosamide, we also evaluated its ethanolamine salt (NEN), which has improved solubility and bioavailability. Both niclosamide and NEN significantly inhibited HCC cell proliferation in vitro, which was associated with down-regulation of key proteins involved in the AKT-mTOR, Wnt, Stat3, and EGFR/Ras/Raf signaling pathways. NEN additionally decreased the growth of three PDX models after oral administration (1,5000 ppm in food) for 4-6 weeks. Expression profiling demonstrated that niclosamide and NEN induced highly similar gene expression changes in HepG2 cells and in PDX models, and that both compounds significantly reversed HCC gene expression in vitro and in vivo . Our results suggest that NEN may be a preferred drug candidate for the treatment of HCC.
2017-03-01 | GSE77322 | GEO
Project description:Neuroblastoma is a pediatric tumor of the peripheral sympathetic nervous system with diverse clinical behaviors. Even with multimodal therapies, high-risk neuroblastoma has an unfavorable outcome irrespective of MYCN amplification, a well-established oncogenic driver in neuroblastoma pathogenesis, and its genetic heterogeneity has largely impeded efforts to correlate molecular targets with biological consequences for more effective treatment strategies. Here, using a gene expression-based approach, we identified the FDA-approved anthelmintic niclosamide as a potential anti-neuroblastoma drug. By combining the gene expression signature associated with high-risk neuroblastoma and the recurrent drug−transcript relationships inferred from up to one million perturbational gene expression profiles, our algorithm predicted effective therapeutic candidates by evaluating the extent to which a given compound or their combinations could ‘reverse’ the high-risk signature. Furthermore, we performed quantitative polymerase chain reaction (qPCR) to validate top five candidate reverse genes which are involved in DNA replication, including cyclin A2 (CCNA2), minichromosome maintenance 10 replication initiation factor (MCM10), ERCC excision repair 6 like, spindle assembly checkpoint helicase (ERCC6L), kinesin family member 20A (KIF20A), and RuvB like AAA ATPase 1 (RUVBL1). Indeed, those five genes were downregulated in niclosamide-treated cells, indicating niclosamide suppressed DNA replication and then inhibited cell proliferation. Using cell proliferation and clonogenic assays as well as flow cytometry, we determined the cytotoxic effects of niclosamide in MYCN-amplified SK-N-DZ and non-amplified SK-N-AS cells. The results showed that niclosamide could effectively reduce not only cell proliferation and colony formation but also trigger cell cycle arrest and apoptosis. Moreover, we conducted human tumor xenografts in a nude mice model to evaluate the in vivo efficacy of niclosamide and found that it significantly suppressed tumor growth and prolonged survival rate, but doesn’t cause organ damage and change body weight. To explore the molecular mechanism of niclosamide, stable-isotope dimethyl labeling strategy for quantitative proteomics was performed on both cell-based or xenograft-based MYCN-amplified SK-N-DZ and MYCN-nonamplified SK-N-AS models. We confirmed niclosamide not only mediated the function of mitochondrial electron transport chain but also the other functions in high risk neuroblastoma cell lines and xenografts. The results suggest that our developed expression-based strategy is useful for drug discovery and provides the possibility of repurposing the anthelminthic drug niclosamide for treating high-risk neuroblastoma therapy.
2022-02-23 | PXD010745 | Pride
Project description:By accentuating drug efficacy and impeding resistance mechanisms, combinatorial, multi-agent therapies have emerged as key approaches in the treatment of complex diseases, most notably cancer. Using high-throughput drug screens, we uncovered distinct metabolic vulnerabilities and thereby identified drug combinations synergistically causing a starvation-like lethal catabolic response in tumor cells from different cancer entities. Domperidone, a dopamine receptor antagonist, as well as several tricyclic antidepressants (TCAs), including Imipramine, induced cancer cell death in combination with the mitochondrial uncoupler Niclosamide ethanolamine (NEN) through activation of the integrated stress response pathway and the catabolic CLEAR network. Using transcriptome and metabolome analyses, we characterized a combinatorial response, mainly driven by the transcription factors Chop and TFE3, which resulted in cell death damage through enhanced pyrimidine catabolism as well as reduced pyrimidine synthesis. Remarkably, the drug combinations sensitized human organoid cultures to the standard-of-care chemotherapy Paclitaxel. Thus, our combinatorial approach could be clinically implemented into established treatment regimen, which would be further facilitated by the advantages of drug repurposing.
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Project description:Transcriptome of nonpregnant myometrial specimens with or without the medroxyprogesterone treament
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Project description:The gene expression profile in treated CP70 side population spheroid cells (CP70sps cells) was analyzed to investigate the effect of niclosamide inhibition on ovarian tumor-initiating cells. CP70sps cells are isolated and characterized as one kind of ovarian tumor-initiating cells, and they show stemness properties and drug resistance capacity. According gene expression profiles and mechanistic analysis, all evidences revealed niclosamide disrupted multiple metabolic pathways affecting biogenetics, biogenesis and redox regulation. These studies support niclosamide as a promising therapeutic agent for ovarian cancer. CP70sps cells were treated with niclosamide for 0, 2, 4 and 6 hours respectively, and then cells were harvested and analyzed their gene expression profiles.
2012-08-05 | E-GEOD-36259 | biostudies-arrayexpress
Project description:Neuroendocrine neoplasms (NEN) are thought to originate from diffuse endocrine networks and therefore most frequently occur in the gastrointestinal tract and lungs. The liver is a frequent site of metastasis of NEN but also the presence of primary hepatic NEN (PHNEN) has been proposed. Due to the impact on disease management, it is urgently required to discriminate the origin of hepatic NEN metastases and to identify clinically relevant subgroups.
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