Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Expression data from MM231 and MM231-FGD5-cas9 breast cancer cells

ABSTRACT: To identify the differiational genes and pathways in MM231 and MM231-FGD5-cas9, we examined the microarray gene expression profile of MM231 breast cancer cells vs FGD5-cas9 cells. Ectopic expression or activation of EGFR is found in most TNBCs, and EGFR inhibitors can suppress TNBC growth in vitro. However, these agents exhibit limited efficacy in TNBC patients, possibly due to the nonkinase oncogenic functions of EGFR and the compensatory effects of other oncogenic activities following anti-EGFR therapy. Here, we identified a positive correlation between EGFR and FGD5 expression in TNBC samples. FGD5 deletion attenuated TNBC initiation and progression by decreasing EGFR stability and expression. Moreover, the proteins involved in mutual compensation of EGFR signaling were significantly downregulated in FGD5-deleted TNBC cells. Mechanistically, FGD5 interacted with EGFR to maintain EGFR stability by impeding EGFR ubiquitylation and degradation mediated by the E3 ligase ITCH; disrupting the FGD5-EGFR interaction accelerated EGFR degradation and produced robust anti-TNBC activity. Our study shows that targeted degradation of EGFR through disrupting the FGD5-EGFR interaction is a promising therapeutic strategy for the TNBC subtype of breast cancer.

ORGANISM(S): Homo sapiens

PROVIDER: GSE144260 | GEO | 2020/01/27

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

VE-PTP inhibition stabilizes endothelial junctions by activating FGD5

Project description:Inhibition of VE-PTP, an endothelial receptor type tyrosine phosphatase, triggers phosphorylation of the tyrosine kinase receptor Tie-2, which leads to the suppression of inflammation-induced vascular permeability. Analyzing the underlying mechanism, we show here that inhibition of VE-PTP and activation of Tie-2 induce tyrosine phosphorylation of FGD5, a GTPase exchange factor (GEF) for Cdc42, and stimulate translocation of this GEF to cell contacts. Interfering with the expression of FGD5 blocked the junction stabilizing effect of VE-PTP inhibition in vitro and in vivo. Likewise, FGD5 was required for strengthening of cortical actin bundles and inhibiting radial stress fiber formation, which were each stimulated by VE-PTP inhibition. We identified Y820 of FGD5 as the direct substrate for VE-PTP. Inhibition of VE-PTP could no longer stabilize endothelial junctions or activate Cdc42 if endothelial cells expressed a Y820F point mutated version of FGD5. In contrast, FGD5-Y820F was still recruited to endothelial cell contacts. Thus, activation of FGD5 is a two-step process that comprises membrane recruitment and phosphorylation of Y820. These steps are necessary for the junction stabilizing effect that is stimulated by VE-PTP inhibition and Tie-2 activation.

2019-05-04 | PXD010959 | Pride

Identification of downstream target genes of transcription factor ZEB1, lncRNA FGD5-AS1 and miR-34a-5p in gastric cancer

Project description:As one of the most abundant lncRNAs in cells, the biological function of lncRNA FGD5-AS1 remains largely unclear in cancers, especially in gastric cancer (GC). In addition, the reason for such high levels of FGD5-AS1 in cells remains unknown. In this study, FGD5-AS1 was proved to be a ZEB1-related lncRNA which was overexpressed and predicted poor prognosis in GC. Knockdown of FGD5-AS1 decreased GC proliferation in vitro and in vivo.

2023-02-23 | GSE214471 | GEO

Transcriptome Analysis of Wild Type and FGD5-AS1 knockdown CCC-HEH-2 cells

Project description:Purpose: According to the previous analysis results of gene regulation in fetal heart tissues with tetralogy of Fallot (ToF), we constructed the ceRNA mediated network driven by lncRNAs using a causal inference framework based on the expression correlations and validated miRNA-lncRNA/mRNA evidences. Totally 4 lncRNAs were identified as hub lncRNAs in the network, and FGD5-AS1 was focused for further loss-of-function investigation. Methods: The specific shRNAs against FGD5-AS1 (sh-FGD5-AS1) as well as the corresponding negative control (sh-NC) were constructed along with lentiviral vector respectively. Then the CCC-HEH-2 human cardiac myocytes cell lines were infected with lentivirus and followed puromycin treatment for several days. The knockdown efficiencies of the FGD5-AS1 expression were validated by qPCR. Genome-wide RNA expression of control and knockdown CCC-HEH-2 cell lines were observed using RNA-Seq. Conclusions: Knockdown of this lncRNA interferes with glutamate receptor activity and metalloendopeptidase inhibitor activity. The expression of abundant CHD genes with |fold change| ≥ 2 was validated with qPCR. These results indicate that FGD5-AS1 plays an important role in CHD genes regulation networks.

2021-06-02 | GSE157626 | GEO

Cooperative regulation of coupled oncoprotein synthesis and stability in triple-negative breast cancer by EGFR and CDK12/13

Project description:Evidence has long suggested that epidermal growth factor receptor (EGFR) may play a prominent role in triple-negative breast cancer (TNBC) pathogenesis, but clinical trials of EGFR inhibitors have yielded disappointing results. Using a candidate drug screen, we discovered that inhibition of cyclin-dependent kinases 12 and 13 (CDK12/13) dramatically sensitizes diverse models of TNBC to EGFR blockade. This combination therapy drives cell death through the 4E-BP1-dependent suppression of the translation and translation-linked turnover of driver oncoproteins, including MYC. A genome-wide CRISPR/Cas9 screen identified the CCR4-NOT complex as a major determinant of sensitivity to the combination therapy whose loss renders 4E-BP1 unresponsive to drug-induced dephosphorylation, thereby rescuing MYC translational suppression and promoting MYC stability. The central roles of CCR4-NOT and 4E-BP1 in response to the combination therapy were further underscored by the observation of CNOT1 loss and rescue of 4E-BP1 phosphorylation in TNBC cells that naturally evolved therapy resistance. Thus, pharmacological inhibition of CDK12/13 reveals a long proposed EGFR dependence in TNBC that functions through the cooperative regulation of translation-coupled oncoprotein stability.

2023-09-27 | GSE221475 | GEO

Chromatin accessibility data in Wild Type and FGD5-AS1 knockdown CCC-HEH-2 cells (ATAC-Seq)

Project description:Purpose: According to the previous analysis results of gene regulation in fetal heart tissues with tetralogy of Fallot (ToF), we constructed the ceRNA mediated network driven by lncRNAs using a causal inference framework based on the expression correlations and validated miRNA-lncRNA/mRNA evidences. Totally 4 lncRNAs were identified as hub lncRNAs in the network, and FGD5-AS1 was focused for further loss-of-function investigation. Methods: The specific shRNAs against FGD5-AS1 (sh-FGD5-AS1) as well as the corresponding negative control (sh-NC) were constructed along with lentiviral vector respectively. Then the CCC-HEH-2 human cardiac myocytes cell lines were infected with lentivirus and followed puromycin treatment for several days. The knockdown efficiencies of the FGD5-AS1 expression were validated by qPCR. The landscape of accessible chromatin in control and knockdown CCC-HEH-2 cell lines were observed using ATAC-Seq. Conclusions: Our data reveal a unique different chromatin state between wild type and FGD5-AS1 knockdown CCC-HEH-2 cells.

2021-06-02 | GSE159464 | GEO

Expression data from MM231 and MM231-FGD5-cas9 breast cancer cells

Project description:Expression data from MM231 and MM231-FGD5-cas9 breast cancer cells

| PRJNA603236 | ENA

Single-Cell RNA-Sequencing reveals cellular heterogeneity and trajectories of lineage specification of mammary basal epithelial cells of WT and Fgd5-depeleted mice

Project description:We report the application of Single-Cell RNA-Sequencing technology for high-throughput profiling in mammary basal epithelial cells of WT and Fgd5-depeleted mice. By obtaining basal epithelial cells isolated from mammary gland of WT and Fgd5-depeleted mice, we performed Single-Cell RNA-Sequencing of basal epithelial cells. The scRNA-Seq libraries were prepared with Single Cell 3′ Reagent Kit v2 (10×Genomics) following the user guide provided. We found that FGD5 promotes mammary development by maintaining LGR5/SLPI/ID3 positive basal cell subsets.. We conclude that Single-Cell RNA-Sequencing would expedite genetic network analyses and permit the dissection of complex biologic functions.

2022-10-08 | GSE207922 | GEO

Protein Tyrosine Phosphatase UBASH3B is Overexpressed in Triple-Negative Breast Cancer and Promotes Invasion and Metastasis

Project description:Efforts to improve the clinical outcome of highly aggressive triplenegative breast cancer (TNBC) have been hindered by the lack of effective targeted therapies. Hence, it is important to identify the specific gene targets/pathways driving the invasive phenotype to develop more effective therapeutics. Here we show that UBASH3B (ubiquitin associated and SH3 domain containing B), a protein tyrosine phosphatase, is overexpressed in TNBC, where it supports malignant growth, invasion and metastasis in large through modulating EGFR. We also show that UBASH3B is a functional target of anti-invasive miR-200a that is downregulated in TNBC. Importantly, the oncogenic potential of UBASH3B is dependent on its tyrosine phosphatase activity, which targets CBL ubiquitin ligase for dephosphorylation and inactivation, leading to EGFR upregulation. Thus, UBASH3B may function as a crucial node in bridging multiple invasion-promoting pathways, thus providing a potential new therapeutic target for TNBC. Breast cancer tissues and breast cancer cell lines

2013-06-01 | E-GEOD-36693 | biostudies-arrayexpress

Expression data from BCL-3 overexpression HaCat cells

Project description:Constitutive activation of EGFR- and NF-kB-dependent pathways is a hallmark of cancer, yet signaling proteins that connect both oncogenic cascades are poorly characterized. Here we define KIAA1199 as a BCL-3- and p65-dependent gene in transformed keratinocytes. KIAA1199 expression is enhanced upon human papillomavirus (HPV) infection and is aberrantly expressed in clinical cases of cervical (pre)neoplastic lesions. Mechanistically, KIAA1199 binds Plexin A2 and protects from Semaphorin 3A-mediated cell death by promoting EGFR stability and signaling. Moreover, KIAA1199 is an EGFR-binding protein and KIAA1199 deficiency impairs EGF-dependent Src, MEK1 and ERK1/2 phosphorylations. Therefore, EGFR stability and signaling to downstream kinases requires KIAA1199. As such, KIAA1199 promotes EGF-mediated epithelial-mesenchymal transition (EMT). Taken together, our data define KIAA1199 as an oncogenic protein induced by HPV infection and constitutive NF-kB activity that transmits pro-survival and invasive signals through EGFR signaling. We used microarrays to detail the global programme of gene expression upon BCL-3 overexpression We used two experimental conditions, namely HaCat cells infected with a control lentivirus as well as HaCat cells infected with a BCL-3 expressing construct. Both experimental conditions were in triplicates.

2014-11-04 | E-GEOD-60551 | biostudies-arrayexpress

Protein Tyrosine Phosphatase UBASH3B is Overexpressed in Triple-Negative Breast Cancer and Promotes Invasion and Metastasis

Project description:Efforts to improve the clinical outcome of highly aggressive triple-negative breast cancer (TNBC) have been hindered by the lack of effective targeted therapies. Thus, it is important to identify the specific gene targets/pathways driving the invasive phenotype to develop more effective therapeutics. Here we show that ubiquitin-associated and SH3 domain-containing B (UBASH3B), a protein tyrosine phosphatase, is overexpressed in TNBC, where it supports malignant growth, invasion, and metastasis largely through modulating epidermal growth factor receptor (EGFR). We also show that UBASH3B is a functional target of anti-invasive microRNA200a (miR200a) that is down-regulated in TNBC. Importantly, the oncogenic potential of UBASH3B is dependent on its tyrosine phosphatase activity, which targets CBL ubiquitin ligase for dephosphorylation and inactivation, leading to EGFR up-regulation. Thus, UBASH3B may function as a crucial node in bridging multiple invasion-promoting pathways, thereby providing a potential therapeutic target for TNBC.

2013-06-01 | GSE36693 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data