Gene expression activation in CLL mediated by MSCs contact
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: PXD010401
ORGANISM(S): Homo sapiens
PROVIDER: GSE99724 | GEO | 2019/05/20
REPOSITORIES: GEO
Similar Datasets
Project description:Human primary mesenchymal stromal cells (MSCs) were either left untreated, treated with 3 µg/ml/day GRN, or co-cultured with CD19-sorted CLL cells of two different patients for 5 days. Gene expression of the MSCs was quantified using an Illumina HumanHT-12 v4 Expression BeadChip. Thereby, genes assigned to 454 Illumina probes were identified to be significantly altered by CLL co-culture compared to control MSCs cultured alone (analysed dataset provided). MSCs in co-culture with CLL cells resembled a CAF-like phenotype. There were no significant transcriptional changes detected in GRN treated compared to untreated MSCs.
2019-06-20 | GSE129108 | GEO
Project description:All experiments are performed on human dendritic cells (DCs) differentiated in GM-CSF and IL-4 from CD14+ cells and bone marrow mesenchimal stem cells (MSCs). We found that MSCs impair active immune synapse formation and we evidenced at electron microscopy two types of contact between MSCs and DCs: gap and adherent junctions. In the same experiments we show that MSC contacts induce a reorganization of DC cytoskeleton by the formation of actin podosomes, structures typical of an immature, tolerogenic state of DCs. These results suggest that MSCs exert a tolerogenic effect on DCs by mechanism mediated by cell-cell contact. This induces DC cytoskeleton reorganization with formation of actin podosomes.
2010-12-31 | E-MTAB-286 | biostudies-arrayexpress
Project description:MSCs in co-culture with CLL cells acquire a CAF-like phenotype.
| PRJNA530149 | ENA
Project description:In chronic lymphocytic leukemia (CLL), the tumor cells receive survival support from stromal cells through direct cell contact, soluble factors and extracellular vesicles. The tyrosine protein kinase Lyn, is aberrantly expressed in the malignant and stromal cells in CLL tissue. We therefore studied the role of Lyn in the EV-based communication and tumor support. We compared the Lyn-dependent EV release, uptake and functionality using Lyn-proficient and deficient stromal cells and primary CLL cells. Lyn-proficient cells caused a significantly higher EV release and EV uptake as compared to Lyn-deficient ones. Also, they induced stronger support of primary CLL cells. Proteomic comparison of the EVs from Lyn-proficient and deficient stromal cell highlighted 72 significantly differentially expressed proteins, many of which belonging to the extracellular matrix organization, such as collagen, nidogen, fibronectin and endosialin (CD248). CD248, a marker of certain tumors and of cancer associated fibroblast (CAF) was significantly depleted in Lyn-deficient HS-5 cells. A knockdown of CD248 in Lyn+ HS-5 cells resulted in a diminished B-CLL cells survival feeding capacity compared to wildtype or scrambled control cells. The presented data provide preclinical evidence, that the tyrosine kinase Lyn crucially influences the EV-based communication between stromal and primary B-CLL cells by raising the EV release and their concentration of functional molecules, such as endosialin.
2023-01-12 | PXD036932 | Pride
Project description:T cells may have a role in sustaining the leukemic clone in chronic lymphocytic leukemia (CLL). In this study, we have examined the ability of T cells from CLL patients to support the survival of the leukemic B cells in vitro. Additionally, we compared global gene expression of T cells from indolent CLL patients with healthy individuals and multiple myeloma (MM) patients. Apoptosis of purified CLL cells was inhibited in vitro when cocultured with increasing numbers of autologous T cells (p<0.01) but not with normal donors. The anti-apoptotic effect exceeded that of the antiapoptotic cytokine IL-4 (p=0.02) and was greater with CD8+ T cells than with CD4+ cells (p<0.05). The effect depended mainly on cell-cell contact although a significant effect was observed in transwell experiments (p<0.05). Additionally, about 356 genes involved in different cellular pathways were deregulated in T cells of CLL patients compared to healthy individuals and MM patients. The results of gene expression profiling was verified for 7 genes (KLF6, TRAF1, CCL4, CCL5, RANTES, XCL1 and XCL2) using qRT-PCR and immunoblotting. Our results demonstrate that CLL-derived T cells can prevent apoptosis of leukemic cells and have altered expression of genes that may facilitate survival of the leukemic clone.
2011-03-24 | GSE28107 | GEO
Project description:T cells may have a role in sustaining the leukemic clone in chronic lymphocytic leukemia (CLL). In this study, we have examined the ability of T cells from CLL patients to support the survival of the leukemic B cells in vitro. Additionally, we compared global gene expression of T cells from indolent CLL patients with healthy individuals and multiple myeloma (MM) patients. Apoptosis of purified CLL cells was inhibited in vitro when cocultured with increasing numbers of autologous T cells (p<0.01) but not with normal donors. The anti-apoptotic effect exceeded that of the antiapoptotic cytokine IL-4 (p=0.02) and was greater with CD8+ T cells than with CD4+ cells (p<0.05). The effect depended mainly on cell-cell contact although a significant effect was observed in transwell experiments (p<0.05). Additionally, about 356 genes involved in different cellular pathways were deregulated in T cells of CLL patients compared to healthy individuals and MM patients. The results of gene expression profiling was verified for 7 genes (KLF6, TRAF1, CCL4, CCL5, RANTES, XCL1 and XCL2) using qRT-PCR and immunoblotting. Our results demonstrate that CLL-derived T cells can prevent apoptosis of leukemic cells and have altered expression of genes that may facilitate survival of the leukemic clone. Peripheral blood was collected by venipuncture from CLL patients, multiple myeloma (MM) patients and age-matched healthy individuals with informed consent and approval of the local Ethics Committee in keeping with the Helsinki declaration on the use of human subjects for research.
2011-03-23 | E-GEOD-28107 | biostudies-arrayexpress
Project description:Combination of GSI with fludarabine has a synergistic antileukemic effect in primary NOTCH1-mutated CLL cells We used microarrays to detail the mechanism of synergy of GSI and fludarabine combination in NOTCH1-mutated CLL cells Global RNA expression in CLL primary cells treated with GSI, fludarabine and the combination at 48 hours of treatment
2013-09-21 | E-GEOD-51044 | biostudies-arrayexpress
Project description:Combination of GSI with fludarabine has a synergistic antileukemic effect in primary NOTCH1-mutated CLL cells We used microarrays to detail the mechanism of synergy of GSI and fludarabine combination in NOTCH1-mutated CLL cells
2013-09-21 | GSE51044 | GEO
Project description:Analysis of gene changes in different genes modulation in MSCs and compared to primary human osteosarcoma cells Total RNA isolated from human parental MSCs and from MSCs siRB, OeMyc, SiRb-OeMyc and primary human osteosarcoma cells
2014-04-03 | E-GEOD-56001 | biostudies-arrayexpress
Project description:Gene expression activation in CLL mediated by MSCs contact
| PRJNA389433 | ENA