Mutations in TRP53, prevalent in human cancers, reportedly drive tumorigenesis through dominant-negative-effects (DNE) over wt TRP53 and neomorphic gain-of-function (GOF) effects. We show that five TRP53 mutants do not accelerate lymphomagenesis on a TRP53-deficient background but strongly synergize with c-MYC over-expression. RNA-seq analysis revealed that mutant TRP53 does not globally repress wt TRP53 function but exerts a DNE with disproportionate impact on subsets of wt TRP53 target genes, particularly those involved in DNA repair, proliferation and metabolism. This reveals that the mutant TRP53 DNE drives tumorigenesis by modulating wt TRP53 function in a manner that is advantageous for neoplastic transformation. Overall design: Each of 5 mutant human TRP53 proteins, and a negative control, was expressed in 3 mouse lymphoma cell lines, both before and after activation of WT TRP53 with nutlin-3a.
Mutant TRP53 exerts a target gene-selective dominant-negative effect to drive tumor development.
Cell line, Subject
View SamplesHodgkin lymphoma is derived from germinal center / post-germinal center B cells.
Gene expression profiling of microdissected Hodgkin Reed-Sternberg cells correlates with treatment outcome in classical Hodgkin lymphoma.
Sex, Age, Specimen part, Disease
View SamplesHodgkin lymphoma is derived from germinal center / post-germinal center B cells.
Gene expression profiling of microdissected Hodgkin Reed-Sternberg cells correlates with treatment outcome in classical Hodgkin lymphoma.
Sex, Age, Specimen part, Disease
View SamplesHodgkin lymphoma is derived from germinal center / post-germinal center B cells.
Gene expression profiling of microdissected Hodgkin Reed-Sternberg cells correlates with treatment outcome in classical Hodgkin lymphoma.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Tead2 expression levels control the subcellular distribution of Yap and Taz, zyxin expression and epithelial-mesenchymal transition.
Cell line, Treatment
View SamplesCellular changes during an epithelial-mesenchymal transition (EMT) largely rely on global changes in gene expression orchestrated by transcription factors.
Tead2 expression levels control the subcellular distribution of Yap and Taz, zyxin expression and epithelial-mesenchymal transition.
Cell line, Treatment
View SamplesWe investigated the effect of miR-1199-5p, miR-200b-3p and miR-429-3p on gene expression profiles during TGFbeta-induced EMT in normal murine mammary gland cells by using the mRNA-sequencing. Our analysis demonstrates that miR-1199-5p and both miR-200 family members share only 6 target genes, indicating that besides regulating Zeb1 expression they exert distinct functions during EMT. Overall design: mRNA profiles of NMuMG cells transiently overexpressing miR-1199-5p, miR-200b-3p or miR-429-3p and treated with TGFbeta for 4 days
miR-1199-5p and Zeb1 function in a double-negative feedback loop potentially coordinating EMT and tumour metastasis.
Cell line, Subject
View SamplesA high degree of cell plasticity seems to promote malignant tumour progression, and an epithelial-mesenchymal transition (EMT) is suspected to provide cancer cells with increased cell plasticity for the development of metastasis and therapy resistance. Here, we have tested whether the EMT-induced cancer cell plasticity can be therapeutically exploited and we report the efficient conversion of breast cancer cells, which have undergone an EMT, into post-mitotic adipocytes. Delineation of the molecular pathways underlying such transdifferentiation has motivated a combination therapy with a MEK inhibitor and Rosiglitazone to demonstrate the conversion of invasive cancer cells into adipocytes and the repression of primary tumor invasion and metastasis formation in mouse models of breast cancer. The results indicate the high potential to utilize the increased cell plasticity of invasive cancer cells for differentiation therapy and they raise the possibility to employ pharmacological treatments to interfere with tumor invasion and metastasis. Overall design: Mesenchymal breast cancer cells (MT?ECad) were harvested at six different time-points during trasndifferentiation into terminally differentiated adipocytes (two biological replicates per time-point)
Gain Fat-Lose Metastasis: Converting Invasive Breast Cancer Cells into Adipocytes Inhibits Cancer Metastasis.
Subject, Time
View SamplesCancer cell plasticity facilitates the development of therapy resistance and malignant progression. De-differentiation processes, such as an epithelial-mesenchymal transition (EMT), are known to enhance cellular plasticity. Here, we demonstrate that cancer cell plasticity can be exploited therapeutically by forcing the trans-differentiation of EMT-derived breast cancer cells into post-mitotic and functional adipocytes. Delineation of the molecular pathways underlying such trans-differentiation has motivated a combination therapy with a MEK inhibitor and the anti-diabetic drug Rosiglitazone in various mouse models of murine and human breast cancer in vivo. This combination therapy provokes the conversion of invasive and disseminating cancer cells into post-mitotic adipocytes leading to the repression of primary tumor invasion and metastasis formation Overall design: Py2T long term cells and mesenchymal breast cancer cells (MT?ECad) were harvested at day7 and treated with different inhibitors (two biological replicates per time-point)
Gain Fat-Lose Metastasis: Converting Invasive Breast Cancer Cells into Adipocytes Inhibits Cancer Metastasis.
Specimen part, Treatment, Subject, Time
View SamplesThis SuperSeries is composed of the SubSeries listed below.
MHC class II transactivator CIITA is a recurrent gene fusion partner in lymphoid cancers.
Specimen part, Cell line, Treatment
View Samples