Mitochondrial ATP fuels ABC transporter-mediated drug efflux in cancer chemoresistance
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Published:2021-05-14
Issue:1
Volume:12
Page:
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ISSN:2041-1723
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Container-title:Nature Communications
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language:en
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Short-container-title:Nat Commun
Author:
Giddings Emily L., Champagne Devin P., Wu Meng-Han, Laffin Joshua M., Thornton Tina M., Valenca-Pereira Felipe, Culp-Hill Rachel, Fortner Karen A., Romero Natalia, East James, Cao PhoebeORCID, Arias-Pulido HugoORCID, Sidhu Karatatiwant S.ORCID, Silverstrim Brian, Kam Yoonseok, Kelley ShanaORCID, Pereira Mark, Bates Susan E., Bunn Janice Y., Fiering Steven N.ORCID, Matthews Dwight E.ORCID, Robey Robert W., Stich Domink, D’Alessandro AngeloORCID, Rincon MercedesORCID
Abstract
AbstractChemotherapy remains the standard of care for most cancers worldwide, however development of chemoresistance due to the presence of the drug-effluxing ATP binding cassette (ABC) transporters remains a significant problem. The development of safe and effective means to overcome chemoresistance is critical for achieving durable remissions in many cancer patients. We have investigated the energetic demands of ABC transporters in the context of the metabolic adaptations of chemoresistant cancer cells. Here we show that ABC transporters use mitochondrial-derived ATP as a source of energy to efflux drugs out of cancer cells. We further demonstrate that the loss of methylation-controlled J protein (MCJ) (also named DnaJC15), an endogenous negative regulator of mitochondrial respiration, in chemoresistant cancer cells boosts their ability to produce ATP from mitochondria and fuel ABC transporters. We have developed MCJ mimetics that can attenuate mitochondrial respiration and safely overcome chemoresistance in vitro and in vivo. Administration of MCJ mimetics in combination with standard chemotherapeutic drugs could therefore become an alternative strategy for treatment of multiple cancers.
Funder
Foundation for the National Institutes of Health
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry
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