Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Predictive data-driven modeling of C-terminal tyrosine function in the EGFR signaling network

ABSTRACT: The Epidermal Growth Factor Receptor (EGFR) has been studied extensively due to its critical role in cellular signaling and association with disease. Previous models have elucidated interactions between EGFR and downstream adaptor proteins, or showed phenotypes affected by EGFR. However, the link between EGFR phosphorylation and phenotypic outcome is still poorly understood. Here, we employed a suite of isogenic cells lines expressing site-specific mutations at each of the EGFR C-terminal phosphorylation sites to interrogate their role in signaling network and cell biological response to stimulation. Our results demonstrate the resilience of the EGFR network, which was largely similar even in the context of multiple Y-to-F mutations in the EGFR C-terminal tail, while also revealing nodes in the network that have not previously been linked to EGFR signaling. Our data-driven model highlights signaling network nodes associated with distinct EGF-driven cell responses, including migration, proliferation, and receptor trafficking. Application of this same approach to less studied RTKs should provide a plethora of novel associations that should lead to a much better understanding of these signaling networks.

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Cell Culture, Fibroblast

DISEASE(S): Disease Free

SUBMITTER: Jacqueline Gerritsen

LAB HEAD: Forest Michael White

PROVIDER: PXD032403 | Pride | 2023-05-09

REPOSITORIES: Pride

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	20210812_JG_NR6_noGFP_1m_BR1_AC83.mzML	Mzml
	20210812_JG_NR6_noGFP_1m_BR1_AC83.mzid.gz	Mzid
	20210812_JG_NR6_noGFP_1m_BR1_AC83.raw	Raw
	20210812_JG_NR6_noGFP_1m_BR1_AC83_human.mzML	Mzml
	20210812_JG_NR6_noGFP_1m_BR1_AC83_human.mzid.gz	Mzid

Items per page:

1 - 5 of 120

Similar Datasets

Phosphoproteomic analysis of IL-2 MSA and IL-12 MSA combination on T cell signaling

Project description:Engineered cytokine-based approaches for immunotherapy of cancer are poised to enter the clinic, with IL-12 being at the forefront. However, little is known about potential mechanisms of resistance to cytokine therapies. We found that orthotopic murine lung tumors were resistant to systemically delivered IL-12 fused to murine serum albumin (MSA, IL12-MSA) due to low IL-12R expression on tumor-reactive CD8+ T cells. IL2-MSA increased binding of IL12-MSA by tumor-reactive CD8+ T cells, and combined administration of IL12-MSA and IL2-MSA led to enhanced tumor-reactive CD8+ T cell effector differentiation, decreased numbers of tumor-infiltrating CD4+ regulatory T (Treg) cells, and increased survival of lung tumor-bearing mice. Predictably, the combination of IL-2 and IL-12 at therapeutic doses led to significant dose-limiting toxicity. Administering IL-12 and IL-2 analogs with preferential binding to cells expressing IL12rb1 and CD25, respectively, led to a significant extension of survival in mice with lung tumors while abrogating dose-limiting toxicity. These findings suggest that IL-12 and IL-2 represent a rational approach to combination cytokine therapy whose dose-limiting toxicity can be overcome with engineered cytokine variants.

2024-01-26 | PXD044740 | Pride

Phosphoproteomic analysis of the Folliculin (FLCN) tumor suppressor reveals FLCN-dependent kinase signaling and TFEB regulation

Project description:In Birt-Hogg-Dubé (BHD) syndrome, germline mutations in the Folliculin (FLCN) gene lead to an increased risk of renal cancer. To address if FLCN is involved regulating cellular signaling pathways via protein and receptor phosphorylation we determined comprehensive complete phosphoproteomic profiles of FLCNPOS and FLCNNEG human renal tubular epithelial cells (RPTEC/TERT1). In total, 15744 phosphorylated peptides were identified, residing on 4329 phosphorylated proteins. Kinase activity inference analysis revealed that FLCN loss elevates phosphorylation of numerous kinases, including tyrosine kinases EPHA2 and MET, as well as activation of downstream MAPK1/3/6 and 8. Three non-canonical phosphorylation sites on EGFR (Tyr1125, Tyr1138 and Tyr1172) were higher phosphorylated upon FLCN loss together with enhanced phosphorylated EGFR substrates ABI, EPS8, ERRFL1, STAT1, PTK2 and CTNND1. In concordance, phosphosite specific signature analyses revealed an enrichment for EGFR signaling in FLCNNEG cells. Interestingly, we detected FLCN dependent phosphorylation of PIK3CD but no canonical downstream Akt/mTOR activation. In agreement with the induction of the E-box transcriptional gene expression signature upon FLCN loss, here we identified that phosphorylation of TFEB on Ser109, Ser114 and Ser122 is dependent on FLCN and absence of this phosphorylation results in constitutive nuclear localization of this transcription factor in FLCNNEG cells. Together, our study reveals enhanced phosphorylation of specific kinases and substrates in FLCNNEG renal epithelial cells, providing important insights in BHD-associated renal tumorigenesis and offering novel handles for the design of targeted therapies.

2022-07-11 | PXD025798 | Pride

Phosphoproteomics informed tailored low-dose drug combination strategies in Pancreatic ductal adenocarcinoma cell lines

Project description:Pancreatic ductal adenocarcinoma is a devastating disease with poor prognosis, commonly characterized by aberrant signaling. Phosphoproteomics provides a functional scaffold to unravel these complex signaling networks and to identify new targets. By a two-step sequential phospho-peptide enrichment, we generated the phosphoproteome for 9 PDAC cell lines (2 derived from PDX samples). By using integrative inferred kinase activity (INKA) scoring, we identified hyperactive phosphokinases that were subsequently matched to kinase inhibitors. In the absence of an oncogenic driver, low-dose kinase inhibitor combinations against multiple (parallel) activated kinases, provided higher efficacy as compared to single-drug treatment. Tailored low-dose combination strategies exhibited promising efficacy in vitro and in vivo, which may ultimately improve treatment outcomes in PDAC patients.

2023-05-09 | PXD036951 | Pride

Phosphoproteomics of truncated FGFR2, a clinically actionable oncogene in multiple cancers

Project description:Somatic hotspot mutations and structural amplifications and fusions affecting fibroblast growth factor receptor 2 (FGFR2) occur in multiple cancer types. However, clinical responses to FGFR inhibitors (FGFRi) have remained variable, emphasizing a need to better understand which FGFR2 alterations are oncogenic and targetable. Here we applied transposon-based screening and tumor modelling in mice to uncover truncation of exon (E) 18 of Fgfr2 as a potent driver mutation. Human oncogenomic datasets revealed a diverse set of FGFR2 alterations, including rearrangements (REs), E1-E17 partial amplifications, and E18 nonsense and frameshift mutations, each causing transcription of E18-truncated FGFR2 (FGFR2deltaE18). Somatic modelling in mice and human tumor cell lines using a compendium of FGFR2deltaE18 and full-length variants identified FGFR2deltaE18-truncation as potent single-driver alteration in cancer. Here we show the phosphoproteomic landscape of FGFR2 variants in murine epithelial cell (MEC) lines and mouse tumors. Global (STY) phosphoproteomics using IMAC and phosphotyrosine phosphoproteomics using pTyr IP’s are combined with DIA protein expression data to uncover oncogenic signaling of clinically-relevant FGFR2 variants.

2022-06-06 | PXD031711 | Pride

Phosphoproteomic Profiling of T-Cell Acute Lymphoblastic Leukemia Identifies Targetable Kinases and Combination Treatments

Project description:Protein kinase inhibitors are amongst the most successful cancer treatments, but targetable kinases activated by gene fusions are rare in T-ALL (e.g., NUP214-ABL1). Nevertheless, leukemic blasts rely on enhanced kinase signaling to sustain dysregulated proliferation. Protein kinases can be hyper-activated in the absence of defects in their genes. Thus, phospho-proteomics can provide information on pathway activation, signaling networks and aberrant kinases activities that offer important opportunities for targeted therapies. Here, we performed mass spectrometry-based global profiling of tyrosine, serine, and threonine phosphorylation in a panel of 11 T-ALL cell lines to identify potential targetable kinases. We report a comprehensive dataset consisting of 21,000 phosphosites on 4896 phosphoproteins, including 217 kinases. We identify several Src-family members (LCK, SRC, FYN, YES1) as well as the cyclin-dependent kinases CDK1 and CDK2 as broadly activated in our panel. We validate highly active kinases as putative target for therapy in vitro and propose potential novel combination treatment strategies, such as the inhibition of the insulin-like growth factor receptor (IGF-1R) signaling pathway to increase the sensitivity to dasatinib treatment in T-ALL.

2022-02-21 | PXD024807 | Pride

Phosphoproteomcs of the folliculin negative cancer cell line UOK257 +/- lentiviral rescue construct

2022-07-11 | PXD030237 | Pride

Alteration in Tyrosine Phosphorylation of Cardiac Proteome and EGFR Pathway Contribute to Hypertrophic Cardiomyopathy

Project description:Alterations of serine/threonine phosphorylation of the cardiac proteome are a hallmark of heart failure. However, the contribution of tyrosine phosphorylation (pTyr) to the pathogenesis of cardiac hypertrophy remains unclear. We use global mapping to discover and quantify site-specific pTyr in two cardiac hypertrophic mouse models, i.e., cardiac overexpression of ErbB2 (TgErbB2) and myosin heavy chain R403Q (R403Q-aMyHC Tg), compared to control hearts. From this, there are significant phosphoproteomic alterations in TgErbB2 mice in right ventricular cardiomyopathy, hypertrophic cardiomyopathy (HCM), and dilated cardiomyopathy (DCM) pathways. On the other hand, R403Q-aMyHC Tg mice indicated that the EGFR1 pathway is central for cardiac hypertrophy, along with angiopoietin, ErbB, growth hormone, and chemokine signaling pathways activation. Surprisingly, most myofilament proteins have downregulation of pTyr rather than upregulation. Kinase-substrate enrichment analysis (KSEA) shows a marked downregulation of MAPK pathway activity downstream of k-Ras in TgErbB2 mice and activation of EGFR, focal adhesion, PDGFR, and actin cytoskeleton pathways. In vivo ErbB2 inhibition by AG-825 decreases cardiomyocyte disarray. Serine/threonine and tyrosine phosphoproteome confirms the above-described pathways and the effectiveness of AG-825 treatment. Thus, altered pTyr may play a regulatory role in cardiac hypertrophic models.

2023-03-10 | PXD036506 | Pride

Mig6 mediates adaptive and acquired resistance to ALK and ROS1 fusion kinase inhibition through feedback activation of EGFR: Cuto28

Project description:ALK and ROS1 fusions defines subsets of lung adenocarcinoma. Although ALK/ROS1 inhibitors improved therapeutic outcome of patients harboring those oncogenic fusions, complete responses were rare, and resistance eventually develops from the residual tumor. To under the mechanisms contributing to residual tumor formation, we performed phosphoproteomics to explore the signaling adaption shortly after ALK/ROS1 inhibition. We found the phosphorylation of Mig6, a potent inhibitor for EGFR, was decreased following ALK/ROS1 inhibition, impairing Mig6 binding and inhibition on EGFR. Furthermore, Mig6 mRNA and protein levels were decreased rapidly by ALK/ROS1 inhibitors, potentiating EGFR activity to support cell survival. We also uncovered a novel mechanism mediated by Mig6 to regulate EGFR activity without impacting EGFR phosphorylation, but rather altering signaling adaptor SHC1 binding to EGFR. Mig6 expression was also lost following long-term exposure to ALK/ROS1 inhibitors to support EGFR-mediated acquired resistance. Finally, a Mig6 EGFR-binding domain truncation mutation was identified in a patient-derived ROS1 cell line, rendering its resistance to ROS1 inhibitors but sensitivity to HER family inhibitors. Our work established a rationale to evaluate combinations of ALK/ROS1 and EGFR inhibitors to limit residual tumor formation, therefore preventing or delaying subsequent resistance emergence.

2023-09-12 | PXD036771 | Pride

Mig6 mediates adaptive and acquired resistance to ALK and ROS1 fusion kinase inhibition through feedback activation of EGFR: H3122

2023-09-12 | PXD036772 | Pride

RNAi knock down of PLC gamma 2, CaMKII, PKC delta and Pyk2 in mouse B cell line A20 after stimulation by anti-IgG to examine the adaptation response of the BCR-dependent intracellular signaling network

Project description:We examined the adaptation response of the BCR-dependent intracellular signaling network, to targeted perturbations induced through siRNA-mediated depletion of select signaling intermediates. The robustness of this network was found to derive from the fact that its constituent nodes displayed graded sensitivities to these perturbations. Importantly, this latter property also facilitated generation of perturbation-unique calibration of signal at individual nodes, with a corresponding effect on the cellular phenotypic response. Subsequently generated data-driven models revealed that the information specifying cellular phenotypic responses was not coded within variations of groups of nodes acting in a discrete manner. Rather, characteristic signaling features were selectively extracted from the majority of the constituent nodes, and then integrated to define a response-specific axis. Thus, stimulus-induced cell fate decisions are governed through a mechanism that defines the composition of signal extracted, from the overall noise provided by the assortment of signals generated at each of the nodes. The microarray experiment was performed here to identify differences in cellular responses upon various cellular perturbations in terms of gene expression profile. Cells were transfected with specific siRNAs against PLC gamma 2, CaMKII, PKC delta and Pyk2 in addition to mock siRNAs.

2008-02-01 | E-TABM-360 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

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