148 results found
    1. Cell Biology
    2. Neuroscience

    Hypoxia-inducible factor cell non-autonomously regulates C. elegans stress responses and behavior via a nuclear receptor

    Corinne L Pender, H Robert Horvitz
    The hypoxia-inducible factor HIF drives transcription of the gene cyp-36A1, which encodes a cytochrome P450 enzyme that acts via a putative intercellular signal to regulate the nuclear receptor NHR-46 and consequently stress resistance and behavior.
    1. Evolutionary Biology

    The last common ancestor of animals lacked the HIF pathway and respired in low-oxygen environments

    Daniel B Mills et al.
    Sponges and ctenophores lack hypoxia-inducible factors, suggesting that the metazoan last common ancestor could have lived aerobically under severe hypoxia and did not need to regulate its transcription in response to oxygen availability.
    1. Cell Biology
    2. Developmental Biology

    YAP1 and TAZ negatively control bone angiogenesis by limiting hypoxia-inducible factor signaling in endothelial cells

    Kishor K Sivaraj et al.
    The interplay between the transcriptional co-regulators YAP1/TAZ and the hypoxia-controlled transcription factor HIF1α differentially regulates endothelial cell behavior in the hypoxic environment of bone compared to other organs.
    1. Immunology and Inflammation

    Drosophila macrophages switch to aerobic glycolysis to mount effective antibacterial defense

    Gabriela Krejčová et al.
    Activated Drosophila macrophages undergo transient metabolic remodeling towards Hypoxia inducible factor 1 α-driven aerobic glycolysis, a program that induces systemic metabolic changes and is crucial for resistance to infection.
    1. Developmental Biology

    An oxygen-insensitive Hif-3α isoform inhibits Wnt signaling by destabilizing the nuclear β-catenin complex

    Peng Zhang et al.
    Hif/Hif-3α has two distinct roles in cells: activating HRE-dependent gene expression and binding to β-catenin to destabilize the nuclear β-catenin complex.
    1. Neuroscience

    Localized hypoxia within the subgranular zone determines the early survival of newborn hippocampal granule cells

    Christina Chatzi et al.
    Neural progenitors reside in relative low oxygen in the subgranular zone (SGZ), and the higher tissue oxygen levels that these cells must face as they migrate away from the hypoxic areas and differentiate appear to cause oxidative damage and an early phase of cell death.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The vacuolar-ATPase complex and assembly factors, TMEM199 and CCDC115, control HIF1α prolyl hydroxylation by regulating cellular iron levels

    Anna L Miles et al.
    An unbiased genome-wide human forward genetic screen identifies the vacuolar ATPase complex and assembly factors as regulators of HIF stability through their actions on intracellular iron metabolism.
    1. Cancer Biology

    Metformin inhibits mitochondrial complex I of cancer cells to reduce tumorigenesis

    William W Wheaton et al.
    The anti-diabetic drug metformin, currently in clinical trials as a potential anti-cancer agent, reduces tumor growth by inhibiting mitochondrial complex I of human cancer cells.
    1. Medicine
    2. Immunology and Inflammation

    HIF-1α regulates IL-1β and IL-17 in sarcoidosis

    Jaya Talreja et al.
    Sarcoidosis, a granulomatous disease characterized by macrophage and T-cell activation, is found to be associated with increased HIF-1α transcriptional activity, and modulation of HIF-1α regulates inflammatory immune responses.
    1. Cell Biology

    HIF-1α is required for disturbed flow-induced metabolic reprogramming in human and porcine vascular endothelium

    David Wu et al.
    Hemodynamic forces regulate endothelial cell metabolism, which in turn regulates endothelial inflammation.

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