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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of human diploid and tetraploid HCT116 cells treated with cisplatin and/or a Chk1 inhibitor to investigate resistance to genotoxic stress

ABSTRACT: Tetraploid cells are more resistant against genotoxic stress (irradiation, platinum compounds, topoisomerase inhibitors) than their diploid precursors. Here, we studied the effect of cisplatin and/or Chk1 inhibition on the transcriptome of diploid and tetraploid HCT116 cells

ORGANISM(S): Homo sapiens

SUBMITTER: Philippe Dessen

PROVIDER: E-TABM-172 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Downregulation of lipopolysaccharide response in Drosophila by negative crosstalk between the AP1 and NF-kappaB signaling modules.

Kim Taeil T Yoon Joonsun J Cho Hwansung H Lee Wook-Bin WB Kim Joon J Song Young-Hwa YH Kim Se Nyun SN Yoon Jeong Ho JH Kim-Ha Jeongsil J Kim Young-Joon YJ

Nature immunology 20050109 2

IkappaB kinase (IKK) and Jun N-terminal kinase (Jnk) signaling modules are important in the synthesis of immune effector molecules during innate immune responses against lipopolysaccharide and peptidoglycan. However, the regulatory mechanisms required for specificity and termination of these immune responses are unclear. We show here that crosstalk occurred between the drosophila Jnk and IKK pathways, which led to downregulation of each other's activity. The inhibitory action of Jnk was mediated ...[more]

PMID: 15640802

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Transcription profiling of non-small cell lung carcinoma cell line H1975 treated with cisplatin or BMS-69014 a novel panHER/VEGFR inhibitor

Project description:Non-small cell lung cancer (NSCLC) with activating mutations in the epidermal growth factor receptor (EGFR) responds to EGFR tyrosine kinase inhibitors such as erlotinib. However, secondary somatic EGFR mutations (e.g. T790M) confer resistance to erlotinib. BMS-690514, a novel panHER/VEGFR inhibitor described here, exerted antiproliferative and pro-apoptotic effects on NSCLC cell lines, with prominent efficacy on H1975 cells expressing the T790M mutation. In this model, BMS-690514 induced a G1 cell cycle arrest, as well as ultrastructural hallmarks of apoptosis, mitochondrial release of cytochrome c, and activation of caspases involved in the intrinsic (e.g. caspase -2, -3, -7 and -9), but not in the extrinsic (e.g. caspase-8) pathway. Caspase inhibition conferred partial protection against BMS-690514 cytotoxicity, pointing to the involvement of both caspase-dependent and -independent effector mechanisms. Transcriptome analyses revealed the upregulation of pro-apoptotic (e.g. Bim, Puma) and cell cycle inhibitory (e.g. p27Kip1, p57Kip2) factors, as well as the downregulation of anti-apoptotic (e.g. Mcl1), heat shock (e.g. HSP40, HSP70, HSP90) and cell cycle promoting (e.g. cyclins B1, D1 and D3, CDK1, MCM family proteins, PCNA) proteins. BMS-690514-induced death of H1975 cells was modified in a unique fashion by a panel of siRNAs targeting apoptosis modulators. Downregulation of components of the NF-kappaB survival pathway (e.g. p65, Nemo/IKK, TAB2) sensitized cells to BMS-690514, whereas knockdown of pro-apoptotic factors (e.g. Puma, Bax, Bak, caspase-2, etc) and DNA damage-related proteins (e.g. ERCC1, hTERT) exerted cytoprotective effects. BMS-690514 is a new pan-HER/VEGFR inhibitor that may become an alternative to erlotinib for the treatment of NSCLC.

2007-07-24 | E-TABM-239 | biostudies-arrayexpress

Transcription profiling of human cell lines treated with cytochalasin D and nocodazole with the aim of characterising tetraploid clones

Project description:During the oncogenic process, tetraploidy is a candidate intermediate stage leading from diploidy to aneuploidy. The aim of our experiment was to establish tetraploid clones and to characterize their transcriptome.

2006-03-01 | E-TABM-70 | biostudies-arrayexpress

Transcription profiling of human T cell lines isolated from tumor infiltrating lymphocytes or peripheral blood lymphocytes of a patient with large cell carcinoma of the lung

Project description:The IGR-Heu tumor cell line was established from patient Heu suffering from large cell carcinoma of the lung. Heu171 T cell clones were isolated from autologous tumor infiltrating lymphocytes. H32-22 clone was isolated from autologous peripheral blood lymphocytes after stimulation with IGR-Heu and sorting with peptide-MHC tetramers. T cells were grown in the presence of irradiated autologous tumor and lymphoblastoid cell lines in complete media supplemented with rIL-2 and conditioned medium from phytohemagglutinin-activated lymphocytes for 3 weeks. Then, for microarray assays, RNA was extracted from the different cells

2007-03-02 | E-TABM-207 | biostudies-arrayexpress

Transcription profiling of response to tamoxifen in human ERa-positive postmenopausal breast tumor patients

Project description:Identification of HRPAP20 and TIMELESS as outstanding candidate markers to predict the response to tamoxifen in ERa-positive postmenopausal breast tumor patients

2007-10-09 | E-TABM-72 | biostudies-arrayexpress

Transcription profiling of 9 pairs of human metastasis/primary melanoma (each from the same patient)

Project description:Study by dye-swap of 9 pairs of metastasis/primary melanoma (each from the same patient)

2007-04-01 | E-TABM-4 | biostudies-arrayexpress

Transcription profiling of cohort of human cutaneous primary melanomas associated with a distant metastasis free survival

Project description:Identification of genomic characteristics in a cohorte of human cutaneous primary melanoma associated with a distant metastasis free survival.

2007-04-01 | E-TABM-1 | biostudies-arrayexpress

Comparative genomic hybridization of 23 human nevi with a pool of primary cutaneous melanoma

Project description:Genomic profiles comparing 23 nevi with a pool of primary cutaneous melanoma

2009-04-16 | E-TABM-3 | biostudies-arrayexpress

Transcription profiling of human cutaneous primary melanomas in an independent population of 17 patients

Project description:Validation of genomics characteristics of human cutaneous primary melanoma in an independnat population of 17 patients.

2007-04-01 | E-TABM-2 | biostudies-arrayexpress

Transcription profiling of humoral resistance to the CTL after phenotypical and functional study of the resistant clone IGR-HeuR8

Project description:From a tumoral line IGR-Heu; resulting from a biopsy of the primitive tumour of a patient reached of a bronchial cancer not with small cells (NSCLC); we established; by successive co-cultures of this line with the autologous CTL (clone T H161); a resistant line to the cytotoxic lysis induced by H161 (IGR-HeuR8 line). This resistant line was then cloned by limiting dilutions and a resistant clone was obtained (tumoral clone IGR-HeuR8). The goal of this study is to define profiles of genetic expression of the tumoral resistance to the CTL after phenotypical and functional study of the resistant clone IGR-HeuR8.

2006-01-23 | E-TABM-71 | biostudies-arrayexpress

Transcription profiling of human CD34+ cells from familial platelet disorder

Project description:Characterize the genes deregulated in CD34 positive cells from peripheral blood of FPD/AML patients harbouring two different RUNX1 mutations. RUNX1 (also called AML1), a DNA-binding subunit of the CBF transcription factor family, is a master regulatory gene in hematopoiesis and acts as a tumour suppressor. Heterozygous germ line alterations in RUNX1 lead to a familial platelet disorder with a propensity to develop acute myeloid leukemia (FPD/AML). Although RUNX1 abnormalities per se are not sufficient to induce full-blown leukemia in FPD, this pathology represents a valuable model to understand how RUNX1 germ line mutations predispose to acquisition of additional genetic changes leading to leukemia transformation. To investigate how RUNX1 may predispose to leukemia, we performed a comparative study between two pedigrees harbouring different RUNX1 mutations, one associated with only thrombocytopenia (R139stop) and the other leading to thrombocytopenia and leukemic predisposition (R174Q).

2010-09-11 | E-TABM-792 | biostudies-arrayexpress

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