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Human leukemia cell line K562 offspring acquring imatinib resistance(K562-r) : Control vs. Drug treated

ABSTRACT: Transcriptional profiling of K562-r comparing control untreated human leukemia cells with human leukemia cells treated with AMN107 and ATO individually or combined.Four timepoints included are 3h,12h,24h,48h, covering the whole time window of K562-r cells responsing to the drug treatment.At the combination of 1.5uM ATO and 8uM AMN107, K562-r cells have the most significant coordinated effects (the apoptosis rate at 72h was 56.41% compared to 12.23% in ATO alone and 29.8% in AMN107 alone.). We studied gene expression series in K562-r cells with or without drug treatments by cDNA microarray analysis. Many genes involved in endoplasmic reticulum (ER) stress signaling, including ATF3, DDIT3, HERPUD1, HSPA5, XBP1 and TXNDC12, were highly up-regulated within 12 h of co-treatment, suggesting that the combination of ATO with AMN107 induced an ER stress response leading to apoptosis later on. Other ER-stress markers like the JNK pathway, which bridges the ER-stress and apoptosis, have been activated. Knock down the initiator of JNK partially alleviate the effects of apoptosis (p<0.05). Co-administering AMN107 and arsenic trioxide, inducing apoptosis via the ER-stress, indicates a novel therapy alternative for the imatinib induced secondary resistance. 17-condition experiment, untreated K562-r vs. Drug-treated K562-r cells, including 4 time points, for each point the untreated and 1.5uM ATO treated,8uM AMN107 treated and both 1.5uM ATO and 8uM AMN107 treated, independently grown and harvested. One replicate per array. Untreated K562-r_0h used to counteracting the background.

ORGANISM(S): Homo sapiens

SUBMITTER: wentao yang

PROVIDER: E-GEOD-24946 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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human leukemia cell line K562 offspring acquring imatinib resistance(K562-r) : Control vs. Drug treated

Project description:Transcriptional profiling of K562-r comparing control untreated human leukemia cells with human leukemia cells treated with AMN107 and ATO individually or combined.Four timepoints included are 3h,12h,24h,48h, covering the whole time window of K562-r cells responsing to the drug treatment.At the combination of 1.5uM ATO and 8uM AMN107, K562-r cells have the most significant coordinated effects (the apoptosis rate at 72h was 56.41% compared to 12.23% in ATO alone and 29.8% in AMN107 alone.). We studied gene expression series in K562-r cells with or without drug treatments by cDNA microarray analysis. Many genes involved in endoplasmic reticulum (ER) stress signaling, including ATF3, DDIT3, HERPUD1, HSPA5, XBP1 and TXNDC12, were highly up-regulated within 12 h of co-treatment, suggesting that the combination of ATO with AMN107 induced an ER stress response leading to apoptosis later on. Other ER-stress markers like the JNK pathway, which bridges the ER-stress and apoptosis, have been activated. Knock down the initiator of JNK partially alleviate the effects of apoptosis (p<0.05). Co-administering AMN107 and arsenic trioxide, inducing apoptosis via the ER-stress, indicates a novel therapy alternative for the imatinib induced secondary resistance.

2010-12-30 | GSE24946 | GEO

Human HL-60 Cells: all-trans retinoic acid (ATRA) vs. ATRA plus arsenic trioxide (ATO)

Project description:Transcriptional profiling of human leukemia?HL-60 cells comparing ATRA treated HL-60 cells with ATRA plus ATO. Goal was to determine the effects of ATO on ATRA induced differentiation of HL-60 cells. Two-condition experiment, ATRA vs. ATRA plus ATO treated HL-60 cells.

2015-03-31 | E-GEOD-67420 | biostudies-arrayexpress

Arsenic targets Pin1 and cooperates with retinoic acid to inhibit cancer-driving pathways and tumor-initiating cells

Project description:Arsenic trioxide (ATO) and all-trans retinoic acid (ATRA) combination safely cures fatal acute promyelocytic leukemia, but the mechanisms underlying their action and synergy remain elusive. ATRA inhibits APL, breast and liver cancers by targeting isomerase Pin1, a master regulator of oncogenic signaling. Here we show that ATO targets Pin1 and cooperates with ATRA to exert potent anticancer activity. ATO inhibits and degrades Pin1, and suppresses its oncogenic function by noncovalent binding to Pin1’s active site. ATRA increases cellular ATO uptake through upregulating aquaporin-9. ATO and ATRA, at clinically safe doses, cooperatively ablate Pin1 to block numerous cancer-driving pathways and inhibit the growth of triple-negative breast cancer cells and tumor-initiating cells in cell and animal models including patient-derived orthotopic xenografts, similar to Pin1 CRISPR knockout, which is substantiated by comprehensive protein and microRNA analyses. Thus, synergistic Pin1 inhibition by ATO and ATRA offers an attractive approach to combating breast and other cancers.

2018-10-16 | PXD010224 | Pride

Transcription profiling of human U266, MM.1s, KMS11, 8226/S multiple myeloma cell lines treated with arsenic

Project description:We used microarrays to examine changes in gene expression in multiple myeloma cell lines following treatment with arsenic trioxide and darinaparsin Experiment Overall Design: Four multiple myeloma cell lines (U266, MM.1s, KMS11, 8226/S) were treated with either arsenic trioxide (ATO) for 6, 24, or 48 hours or darinaparsin (DAR) for 6 or 24 hours; RNA was extracted from treated and control cells for microarray analysis

2009-02-01 | E-GEOD-14519 | biostudies-arrayexpress

Elevated Levels of Arsenic Trioxide Promote Divergent SUMOylation

Project description:ATO is a therapeutic agents used to treat APL, a disease caused by a chromosomal translocation of the RARα gene that can occur reciprocally with the PML gene. The mechanisms through which ATO function and how increased levels of ATO adversely affect the cell are not fully characterized though they involve the SUMOylation, the ubiquitylation and the degradation of the PML/RARα oncoprotein through the PML moiety. Changes in protein SUMOylation, phosphorylation and ubiquitylation were profiled using large-scale proteomic workflows on HEK293 cells following exposure to typical (1 μM) or elevated (10 μM) ATO for 4h to understand the mechanism that underlies the cytotoxicity induced with important ATO levels. Our analyses revealed that 88 proteins displayed divergent SUMOylation with elevated ATO compared to the lower dose, where the latter caused changes in SUMOylation of 4 proteins, including PML. Some of these differing SUMOylation events occurred on known substrates of caspase-3. A similar phenomenon was observed in the phosphoproteomic studies, where 48 proteins were specifically regulated with elevated ATO levels, while low ATO doses barely altered the phosphoproteome. Elevated levels of ATO cause the erroneous SUMOylation and phosphorylation of a vast amount of substrates, which may be responsible for its cytotoxic effects.

2020-04-06 | PXD016166 | Pride

Inhibition of proliferation and induction of autophagy by atorvastatin in PC3 prostate cancer cells correlate with downregulation of Bcl2 and upregulation of miR-182 and p21 [miRNA expression]

Project description:The epidemiologic association between statin use and decreased risk of advanced prostate cancer suggests that statins may inhibit prostate cancer development and/or progression. Studies were performed to determine the effects of a model statin, atorvastatin (ATO), on the proliferation and differentiation of prostate cancer cells, and to identify possible mechanisms of ATO action. ATO inhibited the in vitro proliferation of both LNCaP and PC3 human prostate cancer cells in dose-dependent fashion. The greater inhibitory activity of ATO in PC3 cells was associated with induction of autophagy in that cell line, as demonstrated by increased expression of LC3-II. miR-182 was consistently upregulated by ATO in PC3 cells, but not in LNCaP cells. ATO upregulation of miR-182 in PC3 cells was p53-independent and was reversed by geranylgeraniol. Transfection of miR-182 inhibitors decreased expression of miR-182 by >98% and attenuated the antiproliferative activity of ATO. miR-182 expression in PC3 cells was also increased in response to stress induced by serum withdrawal, suggesting that miR-182 upregulation can occur due to nutritional stress. Bcl2 and p21 were identified to be potential target genes of miR-182 in PC3 cells. Bcl2 was downregulated and p21 was upregulated in PC3 cells exposed to ATO. These data suggest that miR-182 may be a stress-responsive miRNA that mediates ATO action in prostate cancer cells. Gene and miRNA expression in two prostate cancer cell lines treated with Atorvastatin vs. untreated control.

2013-09-30 | E-GEOD-46375 | biostudies-arrayexpress

Inhibition of proliferation and induction of autophagy by atorvastatin in PC3 prostate cancer cells correlate with downregulation of Bcl2 and upregulation of miR-182 and p21 [Gene expression]

2013-09-30 | E-GEOD-46374 | biostudies-arrayexpress

scRNA-seq of T cell differentiation in Artificial Thymic Organoid

Project description:We followed the PSC-ATO protocol as previously described in Montel-Hagen et al. 2019, and differentiated from two iPSC lines, HPSI0114i-kolf_2 (Kolf) and HPSI0514i-fiaj_1 (Fiaj), to single positive T cells. The following include scRNA-seq data from intermediate cells sampled at day -14, day -7 (two samples), day 0 and week 1 of the protocol. For data of later time points (week 3, 5 and 7), please see accession number E-MTAB-11343.

2024-02-10 | E-MTAB-12720 | biostudies-arrayexpress

BRD4 inhibitor JQ1 increase the sensitivity of arsenic trioxide in pancreatic cancer

Project description:Pancreatic cancer is a deadliest type of malignancy, largely due to lack of effective intervention. We here report a pair of agents, ATO and JQ1, which synergistically induce apoptosis in the malignancy. Through global and molecular approaches, we have provided evidence that these agents are both able to modulate ER stress and autophagy in the cancer, probably acting in different ways. Cross-talks between ER stress and autophagy are implicated during ATO/ATO plus JQ1 induced apoptosis, in which NRF2 appears to play a central role. of the globe transcriptional profiles of ATO regulated genes in breast, colon and lung cancer cells with different p53 status. We find p53 wild type cells are resistant to ATO induced globe dynamic transcriptional changes, thus resistant to ATO induced cell growth inhibition. P53 inhibitor PFTα releases p53 mediated transcriptional resistance and increases the sensitivity of ATO in p53 wild type tumor cells.

2019-12-31 | GSE124069 | GEO

Gene expression signatures for combined ATO and CDDP treatment (Ato-C) in CML cell lines

Project description:To investigate the effect of Ato-C on gene expression, we have employed whole genome microarray expression profiling as a discovery platform to identify genes with the potential to suppress the cell proliferation of Ph+ CML cell lines. K562, KU-812 and MEG-A2 cells were treated with ATO, CDDP or Ato-C for 24 h in vitro.

2017-10-12 | GSE104813 | GEO

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