SUMO-MYC-PDAC
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB34637 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The SUMO Pathway as a Therapeutic Option in Pancreatic Cancer
| PRJNA489233 | ENA
Project description:Pancreatic ductal adenocarcinoma (PDAC) still carries a dismal prognosis with overall five-year survival of 8%. Conventional combination chemotherapies are a clear advance in the treatment of PDAC, however subtypes of the disease exist, which exhibit extensive resistance to such therapies. Genomic MYC amplifications represent a distinct subset of PDAC with an aggressive tumor biology. It is clear that hyperactivation of MYC generates dependencies that can be exploited therapeutically. To find MYC-associated dependencies we analyzed human PDAC expression datasets. We observed that MYC is connected to the SUMOylation machinery in PDAC. Components of the SUMO pathway mark a PDAC subtype with worse prognosis and we provide evidence that hyperactivation of MYC is connected to an increased sensitivity to a novel SUMO inhibitor with a potential for further clinical development.
2020-01-06 | PXD011347 | Pride
Project description:Pancreatic ductal adenocarcinoma (PDAC) still carries a dismal prognosis with overall five-year survival of 8%. Conventional combination chemotherapies are a clear advance in the treatment of PDAC, however subtypes of the disease exist, which exhibit extensive resistance to such therapies. Genomic MYC amplifications represent a distinct subset of PDAC with an aggressive tumor biology. It is clear that hyperactivation of MYC generates dependencies, which can be exploited therapeutically. To find MYC-associated dependency we analyzed human PDAC expression dataset. We observed that MYC is connected to the sumoylation machinery in PDAC. Components of the SUMO pathway mark a PDAC subtype with worse prognosis and we provide evidence that PDACs with a MYChigh/SUMOhigh phenotype respond to a novel SUMO inhibitor, offering the opportunity to develop novel stratified PDAC therapies
2019-01-01 | GSE119423 | GEO
Project description:Mouse embryonic fibroblasts (MEFs) were generated from Ubc9fl/- and Ubc9+/+ embryos (E13.5). MEFs were treated with tamoxifen for six days to cause CreERT2 activation, and induce Ubc9 floxed allele deletion. We determined the ChIP-seq profiles of SUMO-1 and SUMO-2 using chromatin of wild-type MEFs Ubc9+/+ and of the corresponding Ubc9 KO MEFs which are entirely depleted for sumoylation. The analysis revealed the nearly complete absence of genome-wide binding of SUMO-1 and SUMO-2 in Ubc9-/- MEFs, attesting for antibody specificities.
2018-10-24 | GSE115842 | GEO
Project description:Analysis of changes in SUMO-2 binding to chromatin in response to heat shock in human U2OS cells
2015-07-13 | E-MTAB-2368 | biostudies-arrayexpress
Project description:Similar to ubiquitin, SUMO forms chains, but the identity of SUMO-chain-modified factors and the purpose of this modification remain largely unknown. Here, we identify budding yeast SUMO protease Ulp2, able to disassemble SUMO chains, as a DDK interactor enriched at replication origins that promotes DNA replication initiation. Replication-engaged DDK is SUMOylated on chromatin, becoming a degradation-prone substrate when Ulp2 no longer protects it against SUMO-chain assembly. Specifically, SUMO chains channel DDK for SUMO-targeted ubiquitin ligase Slx5/Slx8-mediated and Cdc48 segregase-assisted proteasomal degradation. Importantly, the SUMOylation-defective ddk-KR mutant rescues inefficient replication onset and MCM activation in cells lacking Ulp2, suggesting that SUMO chains time DDK degradation. Using two unbiased proteomic approaches, we further identify subunits of the MCM helicase and other factors as SUMO-chain-modified degradation-prone substrates of Ulp2 and Slx5/Slx8. We thus propose SUMO-chain-/Ulp2-protease-regulated proteasomal degradation as a mechanism that times the availability of functionally-engaged SUMO-modified protein pools during replication and beyond.
2019-09-10 | GSE113835 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE34147: Phosphorylated and SUMO-deficient progesterone receptors drive a gene expression profile important for breast cancer progression (Affymetrix gene expression analysis) GSE34148: Phosphorylated and SUMO-deficient progesterone receptors drive a gene expression profile important for breast cancer progression (Illumina gene expression analysis) Refer to individual Series
2012-06-06 | E-GEOD-34149 | biostudies-arrayexpress
Project description:Expression profiles of 28 murine pancreatic cancer cell lines isolated from a KrasG12D-based mouse model of pancreatic cancer mRNA of 28 low passaged murine pancreatic cancer cell lines was extracted and hybridized to Affymetrix microarrays
2012-09-06 | E-GEOD-40609 | biostudies-arrayexpress
Project description:Transcription factors represent one of the largest groups of proteins regulated by SUMO, and their modification has generally been correlated with transcriptional repression. However, as most of the studies focus on specific sumoylated transcriptional regulators, the distribution and global role of SUMO on chromatin in relation to transcription regulation remain largely unknown. To investigate this role, we determined the occupancy of SUMO machinery proteins on chromatin by ChIP coupled to sequencing in human primary cells. Examination of 3 histone modifications, Polymerase II, SUMO1, SUMO2, Ubc9 and PIASy in proliferative and Ras-induced senescent fibroblasts.
2013-07-24 | E-GEOD-42211 | biostudies-arrayexpress
Project description:Loss of nutrient supply elicits alterations of the SUMO proteome and sumoylation is crucial to various cellular processes including transcription. However, the physiological significance of sumoylation of transcriptional regulators is unclear. To begin clarifying this, we mapped the SUMO proteome under nitrogen-limiting conditions in Saccharomyces cerevisiae. Interestingly, several RNA polymerase III (RNAPIII) components are major SUMO targets under normal growth conditions, including Rpc53, Rpc82, and Ret1, and nutrient starvation results in rapid desumoylation of these proteins. These findings are supported by ChIP-seq experiments that show that SUMO is highly enriched at tDNA genes. Furthermore, RNA-seq experiments revealed that preventing sumoylation results in significantly decreased tRNA transcription. TORC1 inhibition resulted in the same effect, and our data indicate that the SUMO and TORC1 pathways are both required for robust tDNA expression. Importantly, tRNA transcription was strongly reduced in cells expressing a non-sumoylatable Rpc82-4KR mutant, which correlated with a misassembled RNAPIII transcriptional complex. Our data suggest that in addition to TORC1 activity, sumoylation of RNAPIII is key to reaching full translational capacity under optimal growth conditions.
2017-01-01 | GSE85622 | GEO