Identification of genetic/cytogenetic alterations and differentially expressed cellular genes in HPV16 E6, E7 and E6/E7 positive human foreskin keratinocytes
Complementation of non-tumorigenicity of HPV18-positive cervical carcinoma cells involves differential mRNA expression of cellular genes including potential tumor suppressor genes on chromosome 11q13.
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View SamplesIdentification of genes differentially expressed in tumorigenic compared to non-tumorigenic, HPV18 positive cells
Complementation of non-tumorigenicity of HPV18-positive cervical carcinoma cells involves differential mRNA expression of cellular genes including potential tumor suppressor genes on chromosome 11q13.
No sample metadata fields
View SamplesIn leukemias and other malignancies of the bone marrow, little is known about the fate of fibroblasts and resident macrophages after normal hematopoietic cells are replaced by neoplastic cells. In the present investigation we used two-stage long-term bone marrow cultures to detect functional stromal cell abnormalities in acute myeloid leukemia, myelodysplastic syndromes and multiple myeloma. While fibroblasts from multiple myeloma and macrophages from multiple myeloma and myelodysplastic syndromes were functionally indistinguishable from the respective cell types from normal bone marrow, fibroblasts from patients with acute myeloid leukemia or myelodysplastic syndromes possessed a significantly lower ability to support hematopoiesis originating from co-cultured normal CD34-positive cells than fibroblasts from healthy marrow. Conversely, macrophages from acute myeloid leukemia marrow significantly enhanced the production of blood cells compared with control macrophages. Aberrant function in fibroblasts and macrophages was associated with consistent changes in the expression of genes whose products are involved in hematopoietic stem cell control, such as cytokines and regulators of the Wnt and Notch signalling pathways.
Functional abnormalities and changes in gene expression in fibroblasts and macrophages from the bone marrow of patients with acute myeloid leukemia.
Sex, Disease, Disease stage, Subject
View SamplesLineage negative, CD44 negative, CD25 positive thymocytes were isolated from wt mice or Miz1 POZ-domain knockout mice to analyze the effect of loss of Miz1 in the DN3 population of T-cells
Miz-1 is required to coordinate the expression of TCRbeta and p53 effector genes at the pre-TCR "beta-selection" checkpoint.
Specimen part
View SamplesIdentification of genes regulated by the transcription factor HNF4a2
HNF4alpha reduces proliferation of kidney cells and affects genes deregulated in renal cell carcinoma.
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View SamplesGene expression studies from hematopoietic stem cell (HSC) populations purified to variable degrees have defined a set of stemness genes. The present study describes the construction and comparative molecular analysis of l-phage cDNA libraries from highly purified primitive HSCs (PHSCs) which retained their long term repopulating activities (LTRAs), and from maturing HSCs (MHSCs) which were largely depleted of LTRAs. Library inserts were amplified and tagged by a T7 RNA polymerase promoter and used to generate biotinylated cRNA for Microarray hybridization. Microarray analysis of the libraries confirmed previous results but also revealed an unforseen preferential expression of translation and metabolism associated genes in the PHSCs. Therefore these data indicate that HSCs are quiescent only in regard of proliferative activities, but are in a state of readiness to provide the metabolic and translational activities required following induction of proliferation by factors which induce differentiation and exit from the HSC pool.
Gene expression profiles in murine hematopoietic stem cells revisited: analysis of cDNA libraries reveals high levels of translational and metabolic activities.
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View SamplesSPC2996 is a novel locked nucleic acid (LNA) phosphorothioate antisense molecule targeting the mRNA of the Bcl-2 oncoprotein. We investigated the mechanism of action of SPC2996 and the basis for its clinically observed immunostimulatory effects in chronic lymphocytic leukemia (CLL). Patients with relapsed CLL were treated with a maximum of six doses of SPC2996 (0.2-6mg/ kg) in a multicenter phase I trial. Microarray-based transcriptional profiling of circulating CLL cells was carried out before and after the first infusion of SPC2996 in eighteen patients.
The novel antisense Bcl-2 inhibitor SPC2996 causes rapid leukemic cell clearance and immune activation in chronic lymphocytic leukemia.
Specimen part, Time
View SamplesTo gain insight into FTO function, we knocked down and overexpressed FTO in HEK293 cells.Genetrail analyses of expression profiles pointed to the RNA splicing and processing machinery. Intriguingly, using immunocytochemistry and confocal laser scanning microscopy, we observed strong enrichment of FTO in nuclear speckles and - to a lesser extent - in nucleoli, but not in other known nuclear bodies. We also studied RNA samples of Fto knockout and wild type mice with regard to content of methylated and unmethylated nucleosidesand observed that ratios of modified and unmodified uracil and adenine were different depending on the presence of FTO. Taken together, our data suggest that FTO is involved in RNA processing and modification.
FTO levels affect RNA modification and the transcriptome.
Treatment
View SamplesWe used microarrays to detail the global gene expression changes following RNAi knock-down of dTip60 in Drosophila SL2 cells
Widespread regulation of gene expression in the Drosophila genome by the histone acetyltransferase dTip60.
Cell line
View SamplesDoxorubicin is considered one of the most potent established chemotherapeutics in the treatment of liposarcoma; however, the response rates usually below 30%, are still disappointing. This study was performed to identify gene expression changes in liposarcoma after doxorubicin treatment. Cells of 19 primary human liposarcoma were harvested intraoperatively and brought into cell culture. Cells were incubated with doxorubicin for 24 h, RNA was isolated and differential gene expression was analysed by the microarray technique.
Heterogeneous in vitro effects of doxorubicin on gene expression in primary human liposarcoma cultures.
Sex
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