A genome-wide loss-of-function screen identifies SLC26A2 as a novel mediator of TRAIL resistance
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE82047 | GEO | 2017/05/29
SECONDARY ACCESSION(S): PRJNA323809
REPOSITORIES: GEO
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Project description:To further analyze the change of microRNA (miRNA) between TRAIL-sensitive and TRAIL-resistant Bel-7402 cells Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)
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Project description:Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has been shown to be a potent inducer of apoptosis in various cancer cell lines and primary cancer cells. However, in clinical trials administration of recombinant TRAIL or TRAIL death receptor agonists did not show sufficient efficacy for treatment of tested malignant disorders compared to standard chemotherapy. Acquired resistance of cancer cells to TRAIL and to other âdeath receptorâ ligands may explain not only the inability of TRAIL and TRAIL âdeath receptorâ agonists to achieve the clearance of cancer cells in vivo but also the escape of cancer cells from immune cell â mediated killing. Selective pressure of TRAIL on TRAIL-sensitive Jurkat T-lymphoblastic leukemia cells provided several TRAIL resistant Jurkat cell line clones (TR1, TR2, TR3). We showed that acquired TRAIL resistance was associated with complex disruption of both extrinsic and intrinsic apoptotic pathways manifested by acquired multi-drug resistant phenotype of TR1, TR2, and TR3 clones. To identify changes associated with TRAIL resistance of Jurkat cells we performed genome-wide gene expression analysis of TRAIL-resistant clones (TR) and compared to WT Jurkat cells. We identified significantly increased expression (1.33-fold change with adjusted p < 0.05) of 73 genes in TR1 clone, 53 genes in TR2 clone and 8 genes in TR3 clone, and significant decrease in expression (0.75-fold change with adjusted p < 0.05) of 174 genes in TR1 clone, 36 genes in TR2 clone and 28 genes in TR3 clone. There was an overlap of only 2 significantly overexpressed (midkine / MDK and zinc finger and BTB domain containing 16 gene / ZBTB16 / PLZF) and 4 downregulated genes (YAP1, IGJ, EIF1AY, RPS4Y1) in all three TR clones. Total cellular RNA was isolated from biologic duplicates of untreated Jurkat cells (WT) and TRAIL resistant Jurkat cell line subclones (TR1, TR2, TR3) established by selective pressure of TRAIL 1000 ng/mL on Jurkat cells over the period of 12 weeks.
2016-06-15 | E-GEOD-38743 | biostudies-arrayexpress
Project description:Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has been shown to be a potent inducer of apoptosis in various cancer cell lines and primary cancer cells. However, in clinical trials administration of recombinant TRAIL or TRAIL death receptor agonists did not show sufficient efficacy for treatment of tested malignant disorders compared to standard chemotherapy. Acquired resistance of cancer cells to TRAIL and to other “death receptor” ligands may explain not only the inability of TRAIL and TRAIL “death receptor” agonists to achieve the clearance of cancer cells in vivo but also the escape of cancer cells from immune cell – mediated killing. Selective pressure of TRAIL on TRAIL-sensitive Jurkat T-lymphoblastic leukemia cells provided several TRAIL resistant Jurkat cell line clones (TR1, TR2, TR3). We showed that acquired TRAIL resistance was associated with complex disruption of both extrinsic and intrinsic apoptotic pathways manifested by acquired multi-drug resistant phenotype of TR1, TR2, and TR3 clones. To identify changes associated with TRAIL resistance of Jurkat cells we performed genome-wide gene expression analysis of TRAIL-resistant clones (TR) and compared to WT Jurkat cells. We identified significantly increased expression (1.33-fold change with adjusted p < 0.05) of 73 genes in TR1 clone, 53 genes in TR2 clone and 8 genes in TR3 clone, and significant decrease in expression (0.75-fold change with adjusted p < 0.05) of 174 genes in TR1 clone, 36 genes in TR2 clone and 28 genes in TR3 clone. There was an overlap of only 2 significantly overexpressed (midkine / MDK and zinc finger and BTB domain containing 16 gene / ZBTB16 / PLZF) and 4 downregulated genes (YAP1, IGJ, EIF1AY, RPS4Y1) in all three TR clones.
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Project description:We generated H460 cells with acquired TRAIL resistance by exposing the parental sentisitve cells to subtoxic concentrations of TRAIL for 6 months. Then we compared the gene expression profile of the sensitive versus the resistant cells. We generated acquired TRAIL-resistant H460 cells from the sentisitve cells by treating subtoxic range of TRAIL for 6 month. And we tried to compare the expressional profile of the genes between two cell types to isolate genes regulating acquired TRAIL-resistance H460 cells were treated with subtoxic concentrations of TRAIL for 6 month. After confirmation of the resistance, the RNA was extracted and the gene expression profile was analyzed.
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Project description:We generated H460 cells with acquired TRAIL resistance by exposing the parental sentisitve cells to subtoxic concentrations of TRAIL for 6 months. Then we compared the gene expression profile of the sensitive versus the resistant cells. We generated acquired TRAIL-resistant H460 cells from the sentisitve cells by treating subtoxic range of TRAIL for 6 month. And we tried to compare the expressional profile of the genes between two cell types to isolate genes regulating acquired TRAIL-resistance
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Project description:We generated H460 cells with acquired TRAIL resistance by exposing the parental sentisitve cells to subtoxic concentrations of TRAIL for 6 months. Then we compared the microRNA expression profile in the sensitive versus resistant cells. H460 cells were treated with subtoxic concentrations of TRAIL for 6 month. After confirmation of the resistance, the RNA was extracted and the microRNA expression profile was analyzed using the NanoString technology.
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Project description:In this study, we subjected the phenomenon of fractional killing in a clonal population of TRAIL-sensitive cells to careful analysis. We asked whether cells that survive initial exposure to TRAIL are sensitive or resistant to subsequent treatment with TRAIL or other apoptosis-inducing agents. We observed that TRAIL survivor cells were highly resistant to a subsequent treatment with TRAIL 24hr later but that this resistance disappeared following several days in culture. Resistance did not involve downregulation of TRAIL receptors and extended to death ligands that bind different classes of receptors: TRAIL survivors were transiently resistant to FasL and vice versa. Gene expression analysis revealed that NF-kB-mediated inflammatory genes were activated in transiently resistant survivor cells leading to an inflammatory phenotype, but resistance was mediated by an independent mechanism related to changes in signaling at the DISC. Periodic exposure to TRAIL sustained resistance, demonstrating a component of induced survival signaling leading to transient acquired resistance to TRAIL. Based on these results we propose that TRAIL treatment leads to a transient adaptation in survivor cells that can be sustained in cells exposed to long-term TRAIL treatments, leading to acquired resistance. Minimizing the impact of cell-to-cell variability on TRAIL-mediated killing will thus require appropriate spacing of stimuli as well as the use of additional agents that inhibit pro-survival pathways.
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Project description:Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has been shown to be a potent inducer of apoptosis in various cancer cell lines and primary cancer cells. However, in clinical trials administration of recombinant TRAIL or TRAIL death receptor agonists did not show sufficient efficacy for treatment of tested malignant disorders compared to standard chemotherapy. Acquired resistance of cancer cells to TRAIL and to other “death receptor” ligands may explain not only the inability of TRAIL and TRAIL “death receptor” agonists to achieve the clearance of cancer cells in vivo but also the escape of cancer cells from immune cell – mediated killing. Selective pressure of TRAIL on TRAIL-sensitive Jurkat T-lymphoblastic leukemia cells provided several TRAIL resistant Jurkat cell line clones (TR1, TR2, TR3). Irrespective of molecular changes histone deacetylase inhibitors (HDACi), such as suberoylanilide-hydroxamic acid (SAHA, vorinostat), were able to restore sensitivity of all three TRAIL-resistant clones to TRAIL. Gene expression analysis of TR1 clone treated with SAHA 1microM for 12 hours compared to untreated TR1 clone showed significant decrease in expression of CFLAR/cFLIP (0.71; p=0.006), BIRC5/survivin (0.80; p=0.024) and BID (0.66; p<0.001). Expression of both TRAIL “death” receptors DR4 (1.57; p<0.001) and DR5 (1.47; p=0.002) were significantly increased compared to untreated TR1 cells. The mRNA expression of caspases-2,-3,-8,-9,-10 did not significantly change with the SAHA treatment.
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