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    1. Cell Biology

    Experimental reconstitution of chronic ER stress in the liver reveals feedback suppression of BiP mRNA expression

    Javier A Gomez, D Thomas Rutkowski
    Feedback mechanisms that contribute to the deactivation of the unfolded protein response lead to the dysregulation of mRNA expression during chronic stress in the liver, including that of the critical endoplasmic reticulum chaperone BiP.
    1. Cell Biology

    Erk regulation of actin capping and bundling by Eps8 promotes cortex tension and leader bleb-based migration

    Jeremy S Logue et al.
    Eps8, a specific effector of oncogenic signaling, organizes the cortical actin cytoskeleton of cancer cells to promote mechanical properties that favor a newly identified mode of confined, adhesion-independent cell migration.
    1. Cell Biology

    Cavin-3 dictates the balance between ERK and Akt signaling

    Victor J Hernandez et al.
    Cavin-3 is a tumor suppressor protein that inhibits Akt signaling, suppresses Warburg metabolism, promotes apoptosis, and protects against cachexia.
    1. Cancer Biology

    Hyperactivation of ERK by multiple mechanisms is toxic to RTK-RAS mutation-driven lung adenocarcinoma cells

    Arun M Unni et al.
    Cancer cells driven by mutations in KRAS or EGFR are dependent on DUSP6 to prevent ERK-induced cell death, creating a novel vulnerability for targeted therapy.
    1. Cell Biology

    Phosphorylation of β-arrestin2 at Thr383 by MEK underlies β-arrestin-dependent activation of Erk1/2 by GPCRs

    Elisabeth Cassier et al.
    Phosphoproteomics identifies β-arrestin 2 phosphorylation at Thr383 by MEK as a key step of GPCR-induced Erk½ activation, thus providing new insight into the molecular mechanism underlying β-arrestin-dependent GPCR-operated signaling.
    1. Cell Biology

    ERK8 is a negative regulator of O-GalNAc glycosylation and cell migration

    Joanne Chia et al.
    The ERK8 kinase blocks the export of glycosyl-tranferases from the Golgi to the endoplasmic reticulum, and thus subsequent O-glycosylation of proteins that otherwise enhance cell motility and tissue invasion.
    1. Cancer Biology
    2. Human Biology and Medicine

    The selective estrogen receptor downregulator GDC-0810 is efficacious in diverse models of ER+ breast cancer

    James D Joseph et al.
    GDC-0810 is a novel, orally bioavailable SERD that exhibits robust pre-clinical activity in models of ER+ breast cancer, including models of tamoxifen resistance, and those that express the ERα mutations, ER.Y537S and ER.D538G.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology

    Crk proteins transduce FGF signaling to promote lens fiber cell elongation

    Tamica N Collins et al.
    Crk proteins are critical mediators of FGF signaling to control cell shape changes.
    1. Developmental Biology
    2. Neuroscience

    Layer specific and general requirements for ERK/MAPK signaling in the developing neocortex

    Lei Xing et al.
    Aberrant ERK/MAPK signaling in cortical pyramidal neurons leads to selective disruption of layer 5 circuit development and generalized changes in neuronal excitability.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Structure and topology around the cleavage site regulate post-translational cleavage of the HIV-1 gp160 signal peptide

    Erik Lee Snapp et al.
    Signal-peptide cleavage of HIV-1 envelope glycoprotein is delayed because of alpha-helical structure covering the cleavage site, effecting early cleavage alters the folding pathway and resulting in localized misfolding and reduced viral fitness.