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    Lactate and pyruvate promote cellular stress resistance and longevity through ROS signaling.

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    Authors
    Tauffenberger, Arnaud cc
    Fiumelli, Hubert cc
    Almustafa, Salam
    Magistretti, Pierre J. cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Laboratory for Cellular Imaging and Energetics, Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
    Bioscience Program
    Date
    2019-02-07
    Permanent link to this record
    http://hdl.handle.net/10754/656584
    
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    Abstract
    L-lactate, for long considered a glycolytic end-product, is now recognized as an important energy substrate. Moreover, it appears that its role is not limited to energy production but also as a signal for neuroprotection and synaptic plasticity. Using a model of neuroblastoma cells and the nematode C. elegans we investigated the cellular mechanisms underlying this protective role of L-lactate. We found that L-lactate promotes a mild Reactive Oxygen Species (ROS) induction that translates into activation of antioxidant defenses and pro-survival pathways such as PI3K/AKT and Endoplasmic Reticulum (ER) chaperones. This hormetic mechanism provides protection against oxidative stress in both cells and nematodes. Furthermore, a mild ROS induction by lactate also promotes longevity in C. elegans.
    Citation
    Tauffenberger, A., Fiumelli, H., Almustafa, S., & Magistretti, P. J. (2019). Lactate and pyruvate promote cellular stress resistance and longevity through ROS signaling. doi:10.1101/542316
    Sponsors
    We thank Magdalena Julkowska, Nadia Steiner and Lorène Mottier for their technical assistance. We want to thank Dr. J. Alex Parker initial support in the project and RNAi clones and Dr. Christian Frøkjær-Jensen for critical reading of the manuscript. Thanks to the C. elegans Genetic Center for the different strains used in this study. Support for this study was provided by King Abdullah University of Science and Technology.
    Publisher
    Cold Spring Harbor Laboratory
    DOI
    10.1101/542316
    Additional Links
    http://biorxiv.org/lookup/doi/10.1101/542316
    ae974a485f413a2113503eed53cd6c53
    10.1101/542316
    Scopus Count
    Collections
    Biological and Environmental Sciences and Engineering (BESE) Division; Preprints; Bioscience Program

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