1,183 results found
    1. Developmental Biology

    Nodal patterning without Lefty inhibitory feedback is functional but fragile

    Katherine W Rogers et al.
    Lefty-mediated feedback inhibition of Nodal signaling mitigates signaling perturbations, but is dispensable for development.
    1. Neuroscience

    Release-dependent feedback inhibition by a presynaptically localized ligand-gated anion channel

    Seika Takayanagi-Kiya et al.
    An anion-selective ligand gated channel acts as a presynaptic auto-receptor to modulate vesicle release and neuronal excitation.
    1. Neuroscience

    Sensory experience inversely regulates feedforward and feedback excitation-inhibition ratio in rodent visual cortex

    Nathaniel J Miska et al.
    Sensory deprivation suppresses cortical responsiveness through a selective remodeling of excitatory and inhibitory microcircuit motifs, by simultaneously amplifying feedforward and suppressing feedback excitation.
    1. Neuroscience

    Activity of the C. elegans egg-laying behavior circuit is controlled by competing activation and feedback inhibition

    Kevin M Collins et al.
    The neural circuit that regulates egg-laying behavior in nematode worms is activated by egg production, coupled to the circuit that generates movement, and inhibited by sensory feedback from egg release.
    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. Biochemistry and Chemical Biology
    2. Cell Biology

    Sterol homeostasis requires regulated degradation of squalene monooxygenase by the ubiquitin ligase Doa10/Teb4

    Ombretta Foresti et al.
    Parallel branches of the ERAD pathway regulate sterol synthesis at multiple steps via feedback inhibition.
    1. Neuroscience

    Activity-dependent regulation of T-type calcium channels by submembrane calcium ions

    Magali Cazade et al.
    The feedback inhibition of T-type calcium channels by intracellular calcium provides new avenues to better decipher the roles of these low-voltage-activated channels in the fine control of calcium signaling events in physiology and pathophysiology.
    1. Cell Biology
    2. Plant Biology

    The GluTR-binding protein is the heme-binding factor for feedback control of glutamyl-tRNA reductase

    Andreas S Richter et al.
    Heme-dependent feedback inhibition of rate-limiting ALA-synthesis of plant tetrapyrrole biosynthesis depends on binding of heme to glutamyl-tRNA reductase-binding protein.
    1. Neuroscience

    An excitatory cortical feedback loop gates retinal wave transmission in rodent thalamus

    Yasunobu Murata, Matthew T Colonnese
    The absence of functional inhibition is a developmentally transient circuit property of corticothalamic feedback that is essential for the central transmission of spontaneous retinal waves.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Point of View: Is cell size a spandrel?

    Ariel Amir
    Analysis of experiments on bacteria suggests that the dependence of cell size on growth rate is not an adaptation but a causal consequence of a regulatory mechanism that controls DNA replication.

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