Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

RNA-Seq of KRAS-regulated genes in a KPAR1.3-G12C murine cell line and lung tumours

ABSTRACT: KPAR1.3-G12C murine lung cancer cell line, and derived lung tumours, were treated with a KRASG12C inhibitor for different time points

ORGANISM(S): Mus musculus

PROVIDER: GSE199582 | GEO | 2022/08/24

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

RNA-Seq of KRAS-regulated genes in a murine cell line and lung tumours

Project description:A murine lung cancer cell line, and derived lung tumours, were treated with a KRASG12C inhibitor for different time points

2022-08-24 | GSE183548 | GEO

SHP2 Inhibition Abrogates Adaptive Resistance to KRAS-G12C-Inhibition and Remodels the Tumor Microenvironment of KRAS-Mutant Tumors

Project description:KRAS is the most frequently mutated oncogene in human cancer, and KRAS inhibition has been a longtime goal. Recently, inhibitors (G12C-Is) that bind KRAS-G12C-GDP and react with Cys-12 were developed. Using new affinity reagents to monitor KRAS-G12C activation and inhibitor engagement, we found that SHP2 inhibitors (SHP2-Is) increased KRAS-GDP occupancy, enhancing G12C-I efficacy. SHP2-Is abrogated feedback signaling by multiple RTKs and adaptive resistance to G12C-Is in vitro, in xenografts, and in syngeneic KRAS-G12C-mutant pancreatic ductal adenocarcinoma (PDAC) and non-small cell lung cancer (NSCLC) models. The combination of SHP2-I and G12C-I evoked favorable changes in the immune microenvironment, decreasing myeloid suppressor cells, increasing CD8+ T cells, and sensitizing tumors to PD-1 blockade. Experiments using an inhibitor-resistant SHP2 mutant showed that SHP2 inhibition in PDAC cells is required for tumor regression and remodeling of the immune microenvironment, but SHP2-Is also had direct effects on angiogenesis. Our results demonstrate that SHP2-I/G12C-I combinations confer a substantial survival benefit in PDAC and NSCLC and identify additional potential combination strategies. G12C-Is show significant, but limited, efficacy as single agents, in part because of “adaptive resistance”. We find that combining G12C-Is with SHP2-Is abrogates adaptive resistance and results in favorable changes in the immune microenvironment that potentiate PD-1 blockade in KRAS-mutant malignancies. SHP2-Is also can have direct, context-dependent, effects on tumor vasculature.

2020-10-01 | GSE149815 | GEO

EVALUATION OF KRASG12C INHIBITOR RESPONSES IN NOVEL MURINE KRASG12C LUNG CANCER CELL LINE MODELS

Project description:The KRAS(G12C) mutation is the most common genetic mutation in North American lung adenocarcinoma patients. Recently, direct inhibitors of the KRASG12C protein have been developed and demonstrate clinical response rates of 37-43%. Importantly, these agents fail to generate durable therapeutic responses with median progression-free survival of ~6.5 months. To provide models for further preclinical improvement of these inhibitors, we generated three novel murine KRASG12C-driven lung cancer cell lines. The co-occurring NRASQ61L mutation in KRASG12C-positive LLC cells was deleted and the KRASG12V allele in CMT167 cells was edited to KRASG12C with CRISPR/Cas9 methods. Also, a novel murine KRASG12C line, mKRC.1, was established from a tumor generated in a genetically-engineered mouse model. The three lines exhibit similar in vitro sensitivities to KRASG12C inhibitors (MRTX-1257, AMG-510), but distinct in vivo responses to MRTX-849 ranging from progressive growth with orthotopic LLC-NRAS KO tumors to marked shrinkage with mKRC.1 tumors. All three cell lines exhibited synergistic in vitro growth inhibition with MRTX-1257 and the SHP2 inhibitor, RMC-4550 and the MRTX-849/RMC-4550 combination yielded tumor shrinkage in orthotopic LLC-NRAS KO tumors propagated in syngeneic mice. Notably, this synergistic combination response was lost in athymic nu/nu mice, supporting a growing literature demonstrating a role for adaptive immunity in the response to this class of drugs. These new models of murine KRASG12C mutant lung cancer should prove valuable for identifying improved therapeutic combination strategies with KRASG12C inhibitors.

2022-07-01 | GSE207098 | GEO

Transcriptomic characterization of sotorasib-resistant tumors in Kras-G12C/Trp53-driven LUAD in genetically engineered mice

Project description:To characterize sotorasib resistance in lung adenocarcinomas (LUAD), we generated genetically engineered mice (Kras-G12C, Trp53-KO) and compared the transcriptional profiles of untreated and sotorasib-resistant tumors

2023-03-05 | GSE204752 | GEO

Single cell RNA sequencing of cells treated with a KRAS G12C specific inhibitor

Project description:KRAS GTPases are activated in one-third of cancers and KRASG12C is the most common activating alteration in lung adenocarcinoma. KRASG12C inhibitors are in Phase-I clinical trials and early data show partial responses in ~50% of lung cancer patients. How cancer cells bypass inhibition, to prevent maximal response to therapy, is not understood. By studying the effect of treatment at single-cell resolution here we found that shortly after treatment, some cancer cells are sequestered in a quiescent state with low KRAS activity, while others bypass this effect to resume proliferation. We then identified adaptive changes that lead to this rapid divergent response and how these differ between cancer cell subpopulaitons. This study uncovers a flexible non-uniform fitness mechanism that enables groups of cells within a population to rapidly bypass the effect of treatment. This adaptive process must be overcome if we are to achieve complete and durable responses in the clinic.

2020-01-17 | GSE137912 | GEO

Targeting KRAS mutant cancers with a covalent G12C-specific inhibitor

Project description:We report RNAseq gene expression data following ARS-1620 treatment and shKRAS expressing cells (NCI-H358). We also compare gene expression changes following treatment with ARS-1620 or trametinib in NCI-H358, LU65 (KRAS-G12C+), and A549 (KRAS-G12S+) cells. Additionally we report a time course (4, 24, 48hr) of ARS-1620 and trametinib treated NCI-H358 cells.

2018-01-24 | GSE103021 | GEO

Proteomics in mutant KRAS Lung cancer

Project description:Proteomic studies to check the effect of MEK1/2 and KRAS G12C inhibitors in lung cancer cells

2023-08-22 | PXD024023 | Pride

Genome-Wide CRISPR Screen Identifies Multiple Synthetic Lethal Targets That Enhance KRAS (G12C) Inhibitor Efficacy [CRISPR]

Project description:KRAS G12C inhibitors (G12Ci) alone and in various combinations are being tested in multiple tumors with over-activation of the RAS/ERK pathway. KRAS plays a critical role in normal cell signaling; hence, G12Cis has been reported to create resistance. We found several novel pathways, including Hippo pathways, are enriched from significant dropouts upon MRTX849 treatment. Our results argue for testing KRAS G12C and TEAD inhibitor combinations in NSCLC patients.

2023-09-11 | GSE240110 | GEO

KP lung tumours

Project description:KP lung tumours

| PRJNA577056 | ENA

Genome-Wide CRISPR Screen Identifies Multiple Synthetic Lethal Targets That Enhance KRAS (G12C) Inhibitor Efficacy [scRNA-seq]

Project description:KRAS G12C inhibitors (G12Ci) alone and in various combinations are being tested in multiple tumors with over-activation of the RAS/ERK pathway. KRAS plays a critical role in normal cell signaling; hence, G12Cis could influence the signaling pathways. We found that several novel pathways including Hippo pathways are upregulated upon MRTX849 treatment. Our results argue for testing KRAS G12C and TEAD inhibitor combinations in NSCLC patients.

2023-09-11 | GSE240118 | 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