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Identification of genes responsive to paeoniflorin, a heat shock protein-inducing compound, in human leukemia U937 cells

ABSTRACT: Paeoniflorin (PF) isolated from paeony root (Paeoniae radix) has been used as an herbal medicine in East Asis for its anti-allergic, anti-inflammatory, and immunoregulatory effects. PF is known to be a chemical heat shock protein (HSP) inducer. The effects on the gene expression in human lymphoma U937 cells treated with PF were investigated using by an Affymetrix GeneChip system. PF treatment induced Hsp70 expression in U937 cells in a dose- and time-dependent manner as shown in Western blot analysis. When the cells were treated with PF (160 μg/ml; 30 min), 41 up-regulated and 23 down-regulated genes were identified. Keywords: paeoniflorin, gene expression, Human lymphoma U937 cell

ORGANISM(S): Homo sapiens

PROVIDER: GSE8228 | GEO | 2007/06/23

SECONDARY ACCESSION(S): PRJNA101155

REPOSITORIES: GEO

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Transcription profiling of human U937 lymphoma cells treated with paeony root (Paeoniae radix) (time series)

Project description:Paeoniflorin (PF) isolated from paeony root (Paeoniae radix) has been used as an herbal medicine in East Asis for its anti-allergic, anti-inflammatory, and immunoregulatory effects. PF is known to be a chemical heat shock protein (HSP) inducer. The effects on the gene expression in human lymphoma U937 cells treated with PF were investigated using by an Affymetrix GeneChip system. PF treatment induced Hsp70 expression in U937 cells in a dose- and time-dependent manner as shown in Western blot analysis. When the cells were treated with PF (160 Î¼g/ml; 30 min), 41 up-regulated and 23 down-regulated genes were identified. Experiment Overall Design: U937 cells, a human lymphoma cell line, were treated with paeoniflorin (0.16 mg/ml; 30 min) and followed by incubation for 0, 3, and 6 h at 37Â°C. Non-treated cells were served as control. Total RNA samples were prepared from the cells. Gene expression was analyzed by an Affymetrix GeneChipÂ® system with Human Expression Array U133A which was spotted with 22,283 probe sets. Sample preparation for array hybridization was carried out as described in the manufactureâs instructions.

2008-06-16 | E-GEOD-8228 | biostudies-arrayexpress

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Genes in apoptosis induced by anisomycin in human leukemia U937 cells

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Identification of genes responsive to mild hyperthermia in human leukemia U937 cells

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Project description:Here, the effects of non-thermal low intensity pulsed ultrasound (LIPUS) on the gene expression in human lymphoma U937 cells were investigated using by an Affymetrix GeneChip system. Six hours after LIPUS treatment (0.3 W/cm2 for 1 min), apoptosis (14Â±3.8%, meanÂ±SD) with minimal cell lysis was observed. At 3 h post-treatment, LIPUS down-regulated 193 genes and up-regulated 201 genes by >1.5-fold. Experiment Overall Design: U937 cells, a human lymphoma cell line, were treated with low intensity pulsed ultrasound (0.3 W/cm2 for 1 min) and followed by incubation for 3 h at 37Â°C. Non-treated cells were served as control. Total RNA samples were prepared from the cells. Gene expression was analyzed by an Affymetrix GeneChipÂ® system with Human Expression Array U133A which was spotted with 22,283 probe sets. Sample preparation for array hybridization was carried out as described in the manufactureâs instructions.

2008-06-11 | E-GEOD-10212 | biostudies-arrayexpress

Identification of genes involved in apoptosis-induced by cold atmospheric pressure plasma in human lymphoma U937 cells

Project description:Cold atmospheric pressure plasma (CAP) is known as a source of biologically active agents, such as reactive oxygen species (ROS) and reactive nitrogen species (RNS). Recent medical investigations have focused on applying CAP to cancer treatment. There is also growing evidence that exposure of cells to CAP or CAP-activated medium induces apoptosis in cancer cells, and ROS and/or RNS are considered to be effective agents to CAP-induced apoptosis. More recently, we demonstrated that Ar-CAP or Ar containing 2.5 % of N2 (Ar-N2-CAP) significantly induced apoptosis in human lymphoma U937 cells. However, a detailed molecular mechanism underling the induction of apoptosis by CAP in cancer cells is unclear. In the present study, to identify genes involved in the induction of apoptosis by CAP in human lymphoma U937 cells, global-scale gene expression analysis was performed using a GeneChipÂ® system. Human lymphoma U937 cells were treated with Ar-CAP or Ar-N2-CAP. Total RNA samples were prepared from the cells, and quality of the RNA was analyzed using a Bioanalyzer 2100. Gene expression was analyzed by an Affymetrix GeneChipÂ® system with a Human Genome U133-plus 2.0 array. Sample preparation for array hybridization was carried out as described in the manufacturerâs instructions.

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