830 results found
    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. Cell Biology

    Regulation of the PI3K pathway through a p85α monomer–homodimer equilibrium

    Lydia WT Cheung et al.
    The p85α homodimer plays a role in the PI3K pathway by regulating PTEN function.
    1. Cancer Biology

    Synergistic interactions with PI3K inhibition that induce apoptosis

    Yaara Zwang et al.
    A geneome-scale shRNA screen identifies five genes whose suppression promotes cell death upon PI3K inhibition both in vitro and in vivo, thus suggesting potential combination therapies involving PI3K inhibition.
    1. Cell Biology

    Niemann-Pick type C proteins promote microautophagy by expanding raft-like membrane domains in the yeast vacuole

    Takuma Tsuji et al.
    Sterol transport by Niemann-Pick type C proteins induces the expansion of raft-like domains in the yeast vacuole, enabling engulfment of lipid droplets by microautophagy.
    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. 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. Human Biology and Medicine
    2. Neuroscience

    PI3K-Yap activity drives cortical gyrification and hydrocephalus in mice

    Achira Roy et al.
    Embryonic PI3K-Yap activity regulates apical adhesion and proliferation of neural progenitors lining the lateral ventricular surface, to maintain the smooth, non-folded mouse brain and to prevent developmental hydrocephalus.
    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. Developmental Biology

    Fetal and trophoblast PI3K p110α have distinct roles in regulating resource supply to the growing fetus in mice

    Jorge López-Tello et al.
    Fetus and trophoblast interplay to regulate fetal nutrient supply and, ultimately, affect healthy growth.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Ankyrin-B is a PI3P effector that promotes polarized α5β1-integrin recycling via recruiting RabGAP1L to early endosomes

    Fangfei Qu et al.
    Ankyrin-B – through interactions with PI3P lipids, dynactin and RabGAP1L – functions as a critical node in the protein circuitry underlying polarized recycling of α5β1-integrin to enable haptotaxis along fibronectin gradients.

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