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TranscriptomicsGene expression profiling upon PI3K inhibition using different inhibitors
Activation of the phosphoinositide 3-kinase (PI3K)/Akt signaling pathway is one the most frequent genetic events in human cancer. Therefore, the development of PI3K inhibitors has attracted much attention. We previously described the pyrazolopyrimidine derivative ETP-45658 as a potent inhibitor of P...
ORGANISM(S): Homo sapiens 
2014-04-08 | E-GEOD-56579 | biostudies-arrayexpress
TranscriptomicsTargeting the Phosphoinositide 3-Kinase p110-alpha Isoform Impairs Cell Proliferation, Survival and Tumor Growth in Small Cell Lung Cancer
Purpose: The phosphoinositide 3-kinase (PI3K) pathway is fundamental for cell proliferation and survival and is frequently altered and activated in neoplasia, including carcinomas of the lung. In this study we investigated the potential of targeting the catalytic class IA PI3K isoforms in small cell...
ORGANISM(S): Homo sapiens 
2012-12-01 | E-GEOD-40564 | biostudies-arrayexpress
TranscriptomicsGene profiling of heart atria in PI3K and Mst1 mouse models
We used microarrays to detail genome-wide gene expression underlying cardiac myocyte pathologies and identified candidate genes and specific pathways affecting cardiac myopathies Keywords: transgenics, cardiac disease analysis Mouse heart atria were dissected for RNA extraction and hybridisation on...
ORGANISM(S): Mus musculus 
2010-04-07 | E-GEOD-12420 | biostudies-arrayexpress
ProteomicsMass spectrometry-based proteomics reveals potential roles of NEK9 and MAP2K4 in resistance to PI3K inhibitors in triple negative breast cancer

Filip Mundt, Sandeep Rajput, Shunqiang Li, Kelly Ruggles, Arshag D. Mooradian, Philipp Mertins, Michael A. Gillette, Karsten Krug, et al., Cancer Res. 2018 May 15;78(10):2732-2746. doi: 10.1158/0008-5472.CAN-17-1990.

Activation of phosphoinositide 3-kinase (PI3K) signaling is frequently obs...

ORGANISM(S): Homo Sapiens (ncbitaxon:9606) 
2018-10-19 | MSV000083050 | MassIVE
TranscriptomicsResistance to PI3K/mTOR inhibitor PF-04691502 in KRAS mutant colorectal cancer models reveals a sensitivity to combination with EGFR inhibition
We explored potential bypass mechanisms to PI3K/mTOR-directed therapy in KRAS mutant CRC models, utilizing genetically engineered mouse models (GEMM) to generate acquired resistance to the targeted dual PI3K/mTOR small molecule inhibitor PF-04691502. Transcriptomic analysis revealed a dynamic stem-l...
ORGANISM(S): Mus musculus 
2014-08-31 | E-MTAB-2510 | biostudies-arrayexpress
TranscriptomicsPhosphatidylinositol 3-Kinase (PI3K) Signaling via Glycogen Synthase Kinase-3 (Gsk-3) Regulates DNA Methylation of Imprinted Loci.
The two vertebrate Gsk-3 isoforms, Gsk-3a and Gsk-3b, are encoded by distinct genetic loci and exhibit mostly redundant function in murine embryonic stem cells (ESCs). Here we report that deletion of both Gsk-3a and Gsk-3b in mouse ESCs results in misregulated expression of imprinted genes and hypom...
ORGANISM(S): Mus musculus 
2010-11-15 | E-GEOD-20015 | biostudies-arrayexpress
TranscriptomicsTargeting resistance to Smoothened antagonists by inhibiting the PI3K pathway
Mutations in Hedgehog (Hh) pathway genes, leading to constitutive activation of Smoothened (Smo), occur in sporadic medulloblastoma, the most common brain cancer in children. Antagonists of Smo induce tumor regression in mouse models of medulloblastoma and hold great promise for targeted therapy fo...
ORGANISM(S): Mus musculus 
2010-09-29 | E-GEOD-19657 | biostudies-arrayexpress
TranscriptomicsPDK1 Signaling Towards PLK1-Myc Activation Confers Oncogenic Transformation and Tumor Initiating Cell Activation and Resistance to mTOR-targeted Therapy.
Although 3-Phosphoinositide-dependent protein kinase-1 (PDK1) has been predominately linked to PI3K-AKT pathway, it may also evoke additional signaling outputs to promote tumorigenesis. Here we report that PDK1 directly induces phosphorylation of Polo-like kinase 1 (PLK1), which in turn induces Myc ...
ORGANISM(S): Homo sapiens 
2013-07-31 | E-GEOD-30669 | biostudies-arrayexpress
TranscriptomicsFOXO3a Is A Major Target Of Inactivation By PI3K/AKT Signaling In Aggressive Neuroblastoma
Neuroblastoma is a pediatric tumor of the peripheral sympathetic nervous system with a highly variable prognosis. Activation of the PI3K/AKT pathway in neuroblastoma is correlated with poor patient prognosis, but the precise downstream effectors mediating this effect have not been determined. Here, ...
ORGANISM(S): Homo sapiens 
2013-05-01 | E-GEOD-42762 | biostudies-arrayexpress
TranscriptomicsIntegrated molecular pathway analysis informs a synergistic combination therapy targeting PTEN/PI3K and EGFR pathways for basal-like breast cancer.
Abstract BACKGROUND: The basal-like breast cancer (BLBC) subtype is characterized by positive staining for basal mammary epithelial cytokeratin markers, lack of hormone receptor and HER2 expression, and poor prognosis with currently no approved molecularly-targeted therapies. The oncogenic signaling...
ORGANISM(S): Homo sapiens 
2016-08-21 | E-GEOD-74667 | biostudies-arrayexpress
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