Retroviral Replicating Vectors Deliver Cytosine Deaminase Leading to Targeted 5-FU-Mediated Cytotoxicity in Multiple Human Cancer Types
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE72955 | GEO | 2015/11/01
SECONDARY ACCESSION(S): PRJNA295406
REPOSITORIES: GEO
Similar Datasets
Project description:Toca 511 is a modified Retroviral Replicating Vector based on Moloney gâretrovirus with an amphotropic envelope. As an investigational cancer treatment, Toca 511 preferentially infects cancer cells without direct cell lysis and encodes an enhanced yeast cytosine deaminase that converts the antifungal drug 5âfluorocytosine to the anticancer drug, 5-fluorouracil. A panel of established human cancers cell lines, derived from glioblastoma, colon, and breast cancer tissue was used to evaluate parameters critical for effective anticancer activity. As part of these analyses, we profiled relative mRNA levels across these cell lines via RNA sequencing. mRNA expression profiles across nine human cancer cell lines.
2015-11-01 | E-GEOD-72955 | biostudies-arrayexpress
Project description:Background: Antimalarials have anticancer potential. Results: We have systematically tested five distinct antimalaria drugs in a panel of cancer cell lines. Conclusion: Three antimalarial classes display potent antiproliferative activity, and their potency is correlated with cancer cell gene expression patterns. Significance: We confirm and extend anticancer potential of these antimalarials and we discuss their therapeutic potential based on clinical data. Key words: Malaria, Anticancer drug, Drug Discovery, Genomics, Gene Expression, Bioinformatics, Cancer AffymetrixM-BM-. HG-U133 Plus 2.0 mRNA expression arrays were used to determine the expression. CEL result files were pre-processed using the RMA (Irizarry et al, 2003) algorithm. This microarray analysis was performed for 91 cell lines.
2013-10-26 | E-GEOD-51739 | biostudies-arrayexpress
Project description:Background: Antimalarials have anticancer potential. Results: We have systematically tested five distinct antimalaria drugs in a panel of cancer cell lines. Conclusion: Three antimalarial classes display potent antiproliferative activity, and their potency is correlated with cancer cell gene expression patterns. Significance: We confirm and extend anticancer potential of these antimalarials and we discuss their therapeutic potential based on clinical data. Key words: Malaria, Anticancer drug, Drug Discovery, Genomics, Gene Expression, Bioinformatics, Cancer
2013-10-26 | GSE51739 | GEO
Project description:Drug resistance, caused by complex and redundant mechanisms, is a major obstacle in cancer treatment, especially in liver and kidney cancers. Combinational therapy of miRNAs, which concurrently target multiple pathways, with anticancer drugs represent a new strategy to improve the drug response. By a systems approach, we identified that miR-27b, a miRNA deleted in liver and kidney cancers, sensitizes cancer cells to a broad spectrum of anticancer drugs in vitro and in vivo. Two samples transfected with nontarget miRNA control or miR-27b mimics followed by 48 hours doxorubicin treatment
2014-01-07 | E-GEOD-53872 | biostudies-arrayexpress
Project description:The purpose of this trial is to evaluate changes in immune activity relative to baseline following treatment with Toca 511 and Toca FC in patients with solid tumors (including recurrent high grade glioma [rHGG]) or lymphoma. This is a multicenter, open-label study of Toca 511 and Toca FC. Patients with advanced solid tumors or lymphoma, for whom curative options are not available, will be enrolled into the study, subject to all entry criteria. Tumors must be accessible to biopsy and/or resection. Patients will be qualified based on the presence of specific molecular characteristics, documented by Foundation Medicine (or equivalent) genomic profile report, and specific tumor types.
Toca 511 will be administered by IV injection followed by (1) intratumoral injection following biopsy or (2) injection into the resection cavity wall following planned resection in the case of rHGG or brain metastases. Toca FC will be administered orally in cycles of therapy.
Patients not undergoing resection of brain tumors will undergo 2 biopsies to allow assessment of baseline and follow-up immune activity in the tumor. Changes in immune activity in peripheral blood will be measured in all patients.
| 2200169 | ecrin-mdr-crc
Project description:5-Fluorouracil (5-FU) is one of the most common drugs used in chemotherapy because of its efficacy and stability. However, 5-FU has been known to work on only 10~15% of colon cancer patients. Therefore, the study of 5-FU sensitivity study is necessary to increase the survival of colon cancer patients. p53 is one of the factors that effect on drug sensitivity. Main function of p53 has been focused on transcription activity in cell death. Numerous drug related studies show that expression of wild-type p53 increases drug sensitivity in various cancer types through inducing apoptotic signaling pathways. Currently, it has been reported that p53 has both transcriptional and non-transcriptional activities in apoptosis. However, most studies about p53 non-transcriptional activities in apoptosis are mainly focused on p53 induced mitochondrial outer membrane permeabilization, triggering the release of pro-apoptotic factors. The chromatin structure and organization have strongly attracted because of their impacts in cellular phenotypes. Recent studies have been shown that changes in chromatin accessibility affect cell phenotypes for external stimuli. Since p53 plays an important role in drug sensitivity and 5-FU is an external stimulus for cancer cells, we hypothesized that p53 may effect on 5-FU sensitivity through different regulation of chromatin accessible regions between TP53-WT and TP53-KO cells. To determine the effect of p53 on chromatin accessibility modification associated with 5-FU sensitivity, ATAC-seq and RNA-seq were performed under 5-FU treatment on TP53-WT as drug sensitive and TP53-KO as drug resistant HCT116 cells. In this study, we found that 5-FU induces chromatin accessibility in both TP53-WT and TP53-KO cells. Moreover, our results show that 5-FU induced chromatin accessibility increases expression of apoptotic genes in TP53-WT HCT116 cells through p53 non-transcriptional activity in nucleus.
2021-02-10 | GSE157950 | GEO
Project description:5-Fluorouracil (5-FU) is one of the most common drugs used in chemotherapy because of its efficacy and stability. However, 5-FU has been known to work on only 10~15% of colon cancer patients. Therefore, the study of 5-FU sensitivity study is necessary to increase the survival of colon cancer patients. p53 is one of the factors that effect on drug sensitivity. Main function of p53 has been focused on transcription activity in cell death. Numerous drug related studies show that expression of wild-type p53 increases drug sensitivity in various cancer types through inducing apoptotic signaling pathways. Currently, it has been reported that p53 has both transcriptional and non-transcriptional activities in apoptosis. However, most studies about p53 non-transcriptional activities in apoptosis are mainly focused on p53 induced mitochondrial outer membrane permeabilization, triggering the release of pro-apoptotic factors. The chromatin structure and organization have strongly attracted because of their impacts in cellular phenotypes. Recent studies have been shown that changes in chromatin accessibility affect cell phenotypes for external stimuli. Since p53 plays an important role in drug sensitivity and 5-FU is an external stimulus for cancer cells, we hypothesized that p53 may effect on 5-FU sensitivity through different regulation of chromatin accessible regions between TP53-WT and TP53-KO cells. To determine the effect of p53 on chromatin accessibility modification associated with 5-FU sensitivity, ATAC-seq and RNA-seq were performed under 5-FU treatment on TP53-WT as drug sensitive and TP53-KO as drug resistant HCT116 cells. In this study, we found that 5-FU induces chromatin accessibility in both TP53-WT and TP53-KO cells. Moreover, our results show that 5-FU induced chromatin accessibility increases expression of apoptotic genes in TP53-WT HCT116 cells through p53 non-transcriptional activity in nucleus.
2021-02-10 | GSE157949 | GEO
Project description:Drug resistance, caused by complex and redundant mechanisms, is a major obstacle in cancer treatment, especially in liver and kidney cancers. Combinational therapy of miRNAs, which concurrently target multiple pathways, with anticancer drugs represent a new strategy to improve the drug response. By a systems approach, we identified that miR-27b, a miRNA deleted in liver and kidney cancers, sensitizes cancer cells to a broad spectrum of anticancer drugs in vitro and in vivo.
2014-01-07 | GSE53872 | GEO
Project description:Auranofin as a novel anticancer drug for anaplastic thyroid cancer
| PRJNA1109320 | ENA
Project description:5-Fluorouracil (5-FU) is a chemotherapeutic drug component that is commonly used for the treatment of solid cancers. The anticancer properties of 5-FU have been attributed to interference with nucleotide synthesis and through direct incorporation into the DNA as being a pyrimidine analog. As both mechanisms of action may have a mutational impact on surviving tumor cells, we performed three independent analyses to characterize the genomic consequences of 5-FU treatment: i) in vitro treatment of intestinal organoids with 5-FU followed by whole genome sequencing, ii) genome-wide mutation analyses in tumor samples from 5-FU treated patients with breast or colorectal cancer, and iii) analysis of paired biopsies from patients treated with 5-FU between biopsies. Our results demonstrate that both in vitro and in vivo 5-FU causes a mutational pattern that is dominated by T>G substitutions in a CTT context and with strong resemblance to COSMIC signature 17. Interestingly, this signature is also found in non 5-FU treated patients, most prominently in esophageal tumors, indicating that distinct endogenous and exogenous triggers can converge into highly similar mutational signatures. Furthermore, our results suggest that 5-FU may have adverse mutagenic effects on healthy cells and contributes to genetic variability in surviving cancer cells thereby contributing to tumor evolution.
| EGAS00001003592 | EGA