772 results found
    1. Cell Biology
    2. Developmental Biology

    PI3K/Akt1 signalling specifies foregut precursors by generating regionalized extra-cellular matrix

    S Nahuel Villegas et al.
    A signalling cascade involving PI3K/Akt1 remodels the extra-cellular matrix to achieve atypical cellular responses and control cell fate specification within the embryonic endoderm.
    1. Neuroscience

    A postsynaptic PI3K-cII dependent signaling controller for presynaptic homeostatic plasticity

    Anna G Hauswirth et al.
    A screen encompassing all kinases and phosphatases reveals that PI3K-cII, PI3K-cIII and Rab11-dependent recycling endosomes comprise a novel, postsynaptic 'signaling controller' that is part of an integrated, trans-synaptic signaling system necessary for presynaptic homeostatic plasticity.
    1. Cancer Biology
    2. Cell Biology

    Rac1-mediated membrane raft localization of PI3K/p110β is required for its activation by GPCRs or PTEN loss

    Onur Cizmecioglu et al.
    A unique two-step mechanism of plasma membrane recruitment and activation governs G-protein-coupled receptor mediated PI3K signaling.
    1. Cell Biology
    2. Immunology and Inflammation

    Non-canonical antagonism of PI3K by the kinase Itpkb delays thymocyte β-selection and renders it Notch-dependent

    Luise Westernberg et al.
    Antagonistic signaling by the kinases PI3K and Itpkb limits the kinetics and enforces the Notch-dependence of beta-selection – the most important cell-fate determining process in alpha beta T cell development.
    1. Cancer Biology

    Mutationally-activated PI3’-kinase-α promotes de-differentiation of lung tumors initiated by the BRAFV600E oncoprotein kinase

    J Edward van Veen et al.
    Two of the most commonly mutated growth factor pathways induce a deadly feature of lung adenocarcinoma.
    1. Neuroscience

    Mouse models of human PIK3CA-related brain overgrowth have acutely treatable epilepsy

    Achira Roy et al.
    Acute one-hour treatment of Pik3ca mutant mice with a novel anti-epilepsy drug suppresses seizures despite continued developmental brain dysmorphology, promising a new therapeutic strategy for patients with intractable pediatric epilepsy.
    1. Computational and Systems Biology
    2. Developmental Biology

    Receptor tyrosine kinases modulate distinct transcriptional programs by differential usage of intracellular pathways

    Harish N Vasudevan et al.
    PDGF and FGF signal via distinct intracellular pathways to confer different cellular outcomes during craniofacial development.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Disease-related mutations in PI3Kγ disrupt regulatory C-terminal dynamics and reveal a path to selective inhibitors

    Manoj K Rathinaswamy et al.
    The c-terminus of PI3K plays a key role in regulating kinase activity, with c-terminal disease-linked mutations leading to either activation or inhibition, which reveal a path to specific inhibitors.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Akt regulation of glycolysis mediates bioenergetic stability in epithelial cells

    Yin P Hung et al.
    Individual cells display heterogeneous fluctuations in metabolic activity, with amplitude and kinetics controlled by interlocking feedbacks between glycolysis and the Insulin/PI3K/Akt signaling pathway.
    1. Cell Biology
    2. Neuroscience

    Neurotrophins induce fission of mitochondria along embryonic sensory axons

    Lorena Armijo-Weingart et al.
    Induction of the fission of mitochondria-populating sensory axons is shown to be a novel biological action of neurotrophins.

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