1,502 results found
    1. Cancer Biology

    Environmental cystine drives glutamine anaplerosis and sensitizes cancer cells to glutaminase inhibition

    Alexander Muir et al.
    Cell culture models widely used in cancer research do not reflect metabolism in tumors; by altering culture systems to better model tumor metabolism we find that environmental cystine promotes tumor glutamine metabolism.
    1. Cancer Biology

    A powerful drug combination strategy targeting glutamine addiction for the treatment of human liver cancer

    Haojie Jin et al.
    Combination of glutaminase inhibitor CB-839 and ASCT2 inhibitor V-9302 showed efficient antitumor effect against glutamine addicted liver cancer cells via glutathione depletion and reactive oxygen species (ROS) induction.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures of the human glutamine transporter SLC1A5 (ASCT2) in the outward-facing conformation

    Xiaodi Yu et al.
    Cryo-EM structures of unliganded SLC1A5 and its complex with glutamine in outward-facing state provide insights into the substrate specificity and transport mechanism and will be helpful for developing selective inhibitors.
    1. Chromosomes and Gene Expression

    Glutaminase 2 is a novel negative regulator of small GTPase Rac1 and mediates p53 function in suppressing metastasis

    Cen Zhang et al.
    The GLS2 enzyme suppresses cancer metastasis by interacting with the small GTPase Rac1 and inhibiting its activity.
    1. Cancer Biology

    eIF4E S209 phosphorylation licenses myc- and stress-driven oncogenesis

    Hang Ruan et al.
    Genetic and transcriptomic analyses revealed that eIF4E S209 phosphorylation enables Myc and mutant KRAS cooperation in colon cancer through stress- and glutamine-dependent growth and addiction.
    1. Cell Biology

    Translation in amino-acid-poor environments is limited by tRNAGln charging

    Natalya N Pavlova et al.
    Amino acid limitation triggers preferential uncharging of glutamine-specific tRNAs and depletes polyglutamine tract-containing proteins from mammalian cells, revealing a potential role for polyglutamine tracts as sensors of glutamine sufficiency.
    1. Microbiology and Infectious Disease

    Glutamine metabolism modulates azole susceptibility in Trypanosoma cruzi amastigotes

    Peter C Dumoulin et al.
    Trypanosoma cruzi intracellular amastigotes exhibit rapid resistance to azoles, independent of genetic selection, which is dependent on metabolic state and mechanistically distinct from latency.
    1. Immunology and Inflammation

    Glutathione de novo synthesis but not recycling process coordinates with glutamine catabolism to control redox homeostasis and directs murine T cell differentiation

    Gaojian Lian et al.
    Metabolic reprogramming in suppressing oxidative stress during TH17 cell differentiation.
    1. Neuroscience

    Dopamine neuron dependent behaviors mediated by glutamate cotransmission

    Susana Mingote et al.
    The conditional reduction of glutaminase in mouse dopamine neurons selectively attenuates glutamate cotransmission at phasic frequencies, revealing the role of dopamine neuron glutamate cotransmission in the attribution of motivational salience.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Diversity and plasticity in Rab GTPase nucleotide release mechanism has consequences for Rab activation and inactivation

    Lars Langemeyer et al.
    Analysis of multiple guanine exchange factors shows that Rab activation can occur via a number of mechanistically distinct GDP-release pathways.

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