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HDAC inhibitor panobinostat engages host immune defenses to promote the tumoricidal effects of trastuzumab in HER2+ tumors

ABSTRACT: Characterisation of the tumor extrinsic (immune-mediated) mechanisms by which panobinostat and trastuzumab can collaboratively promote tumor-associated NK cell infiltration to eradicate trastuzumab-refractory HER2+ tumors

ORGANISM(S): Mus musculus

PROVIDER: GSE81380 | GEO | 2017/02/10

SECONDARY ACCESSION(S): PRJNA321407

REPOSITORIES: GEO

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RNA sequencing of BT474 cells treated with trastuzumab or trastuzumab + pertuzumab and BT474-derived cells resistant to trastuzumab or trastuzumab + pertuzumab

Project description:We sequenced untreated BT474 cells, BT474 cells treated for three days with trastuzumab or trastuzumab + pertuzumab, as well as two BT474-derived trastuzumab-resistant pools and two BT474-derived trastuzumab + pertuzumab resistant pools. Resistant pools were generated by culturing BT474 cells in gradually increasing doses of trastuzumab and trastuzumab + pertuzumab over the course of several months and continually maintained in drug.

2020-01-26 | GSE121105 | GEO

Differential gene expression in neuroblastoma cells after treatment with vehicle control, JQ1, panobinostat, or combination of JQ1 and panobinostat

Project description:The bromodomain inhibitor JQ1 and the histone deacetylase inhibitor panobinostat induce synergistic anticancer effects We analyzed whether JQ1 and panobinostat synergistically modulate gene expression Neuroblastoma SK-N-BE(2) cells were treated with vehicle control, 1 microM JQ1, 10 nM panobinostat, or combination of JQ1 and panobinostat for 6 hours, and subjected to differential gene expression studies with Affymetrix microarrays.

2015-12-31 | E-GEOD-68690 | biostudies-arrayexpress

RNAseq to investigate transcriptional changes in human MM cell lines due to panobinostat, 5-Azacytidine, panobinostat+5-Azacytidine or n-methyl-2-pyrroldine (NMP) treatments.

Project description:Purpose: We applied RNA sequencing technology for high-throughput analysis of transcriptional changes within human MM cell lines JJN3 and U266 due to individual and combination drug treatment. Methods: JJN3 and U266 cells were treated with pan-HDACi panbobinostat, DNMTi 5-Azacytidine, panobinostat+5-Azacytidine or NMP for 4h or 24h in triplicate and transcriptional changes assessed by RNAseq using Illumina HiSeq platform. Specifically, JJN3 cells were treated with 10nM panobinostat, 2.5µM 5-Azacytidine, panobinostat+5-Azacytidine (at given doses), or 10mM NMP. U266 cells were treated with 10nM panobinostat, 10µM 5-Azacytidine, panobinostat+5-Azacytidine (at given doses), or 10mM NMP. Results: We report unique and overlapping transcriptional signatures that lead to the induction of apoptosis in human MM cell lines in a cell-specific manner due to individual or combination treatments. Conclusions: A detailed analysis of differential transcriptional events in human MM cell lines due to HDACi, DNMTi, HDACi+DNMTi and NMP appear to define the molecular events leading to apoptosis and drug mechanism of action. We tested triplicate experiments at 4h and 24hr time points in JJN3 and U266 cell lines against vehicle control treated cells.

2014-04-09 | E-GEOD-56623 | biostudies-arrayexpress

Differential gene expression in neuroblastoma cells after treatment with vehicle control, JQ1, panobinostat, or combination of JQ1 and panobinostat

2015-12-31 | GSE68690 | GEO

Gene expression data from trastuzumab-hypersensitive clones

Project description:Genes involved in trastuzumab response were identified using transcriptomic data from cells hypersensitive to trastuzumab derived from BT474.

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RNA sequencing of BT474 cells treated with trastuzumab or trastuzumab + pertuzumab and BT474-derived cells resistant to trastuzumab or trastuzumab + pertuzumab

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Human breast cancer SKBr-3 cells: trastuzumab-resistant vs. parental

Project description:Human breast cancer SKBr-3 cells selected with trastuzumab for 6 month compared with parental SKBr-3 cells; Goal was to screen for microRNAs involved in development of trastuzumab resistance. Human breast cancer SKBr-3 cells were continuously cultured in the presence ofM-BM- 5M-BM-5g/ml trastuzumab for 6 months, and the resulting alive cells were regarded as trastuzumab-resistant. Total RNAs were prepared from these cells and cells cultured in parallel in control media, and were subjected to hybridization on the miRCURY LNA Array (Exiqon, version 11.0).

2013-05-25 | E-GEOD-47011 | biostudies-arrayexpress

Myc-driven medulloblastoma cells treated with Panobinostat (LBH589)

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Panobinostat in Treating Patients With Relapsed or Refractory Non-Hodgkin Lymphoma

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Trastuzumab produces therapeutic actions by upregulating miR-26a and miR-30b in breast cancer cells

Project description:Objective: Trastuzumab has been used for the treatment of HER2-positive breast cancer (BC). However, a subset of BC patients exhibited resistance to trastuzumab therapy. Thus, clarifying the molecular mechanism of trastuzumab treatment will be beneficial to improve the treatment of HER2-positive BC patients. In this study, we identified trastuzumab-responsive microRNAs that are involved in the therapeutic effects of trastuzumab. Methods and results: RNA samples were obtained from HER2-positive (SKBR3 and BT474) and HER2-negetive (MCF7 and MDA-MB-231) cells with and without trastuzumab treatment for 6 days. Next, we conducted a microRNA profiling analysis using these samples to screen those microRNAs that were up- or downregulated only in HER2-positive cells. This analysis identified miR-26a and miR-30b as trastuzumab-inducible microRNAs. Transfecting miR-26a and miR-30b induced cell growth suppression in the BC cells by 40% and 32%, respectively. A cell cycle analysis showed that these microRNAs induced G1 arrest in HER2-positive BC cells as trastuzumab did. An Annexin-V assay revealed that miR-26a but not miR-30b induced apoptosis in HER2-positive BC cells. Using the prediction algorithms for microRNA targets, we identified cyclin E2 (CCNE2) as a target gene of miR-30b. A luciferase-based reporter assay demonstrated that miR-30b post-transcriptionally reduced 27% (p=0.005) of the gene expression by interacting with two binding sites in the 3’-UTR of CCNE2. Conclusion: In BC cells, trastuzumab modulated the expression of a subset of microRNAs, including miR-26a and miR-30b. The upregulation of miR-30b by trastuzumab may play a biological role in trastuzumab-induced cell growth inhibition by targeting CCNE2. We obtained microRNA expression profiles of breast cancer cell lines, MCF7, MDA-MB-231, SKBR3, and BT474, with or without trastuzumab (4microgram/mL) treatment.

2012-06-02 | E-GEOD-38415 | biostudies-arrayexpress

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