107 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. Genetics and Genomics
    2. Evolutionary Biology

    Evolution: Oxygen and early animals

    Kalle T Rytkönen
    The biology of sponges provides clues about how early animals may have dealt with low levels of oxygen.
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    1. Structural Biology and Molecular Biophysics

    NPAS1-ARNT and NPAS3-ARNT crystal structures implicate the bHLH-PAS family as multi-ligand binding transcription factors

    Dalei Wu et al.
    Detailed structural analysis of NPAS1-ARNT and NPAS3-ARNT complexes, and further comparisons with other bHLH-PAS protein structures, show that this family of mammalian transcription factors have distinct ligand-binding pockets within their molecular architectures.
    1. Cell Biology
    2. Developmental Biology

    In vivo genetic dissection of tumor growth and the Warburg effect

    Cheng-Wei Wang et al.
    A Drosophila tumor model reveals how the activation of an oncogenic pathway can lead to both tumor growth and a reprogramming of metabolism known as the Warberg effect.
    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. 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. Cell Biology
    2. Neuroscience

    Hypoxia: Adapt or avoid

    Ganesh K Kumar
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    1. Biochemistry and Chemical Biology

    Lack of activity of recombinant HIF prolyl hydroxylases (PHDs) on reported non-HIF substrates

    Matthew E Cockman et al.
    Assays using recombinant HIF prolyl hydroxylases did not support hydroxylation of more than 20 reported non-HIF substrates under conditions where robust HIF hydroxylation was observed.

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