{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T18:44:21Z","timestamp":1791830661011,"version":"4.3.4"},"reference-count":70,"publisher":"eLife Sciences Publications, Ltd","license":[{"start":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T00:00:00Z","timestamp":1726185600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T00:00:00Z","timestamp":1726185600000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T00:00:00Z","timestamp":1726185600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000060","name":"National Institute of Allergy and Infectious Diseases","doi-asserted-by":"publisher","award":["R01AI134857"],"award-info":[{"award-number":["R01AI134857"]}],"id":[{"id":"10.13039\/100000060","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100011781","name":"Shriners Hospitals for Children","doi-asserted-by":"publisher","award":["83009"],"award-info":[{"award-number":["83009"]}],"id":[{"id":"10.13039\/100011781","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100011781","name":"Shriners Hospitals for Children","doi-asserted-by":"publisher","award":["85132"],"award-info":[{"award-number":["85132"]}],"id":[{"id":"10.13039\/100011781","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["elifesciences.org"],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>\n                    How bacterial pathogens exploit host metabolism to promote immune tolerance and persist in infected hosts remains elusive. To achieve this, we show that\n                    <jats:italic>Pseudomonas aeruginosa<\/jats:italic>\n                    (\n                    <jats:italic>PA<\/jats:italic>\n                    )\n                    <jats:italic>,<\/jats:italic>\n                    a recalcitrant pathogen, utilizes the quorum sensing (QS) signal 2\u2019-aminoacetophenone (2-AA). Here, we unveil how 2-AA-driven immune tolerization causes distinct metabolic perturbations in murine macrophages\u2019 mitochondrial respiration and bioenergetics. We present evidence indicating that these effects stem from decreased pyruvate transport into mitochondria. This reduction is attributed to decreased expression of the mitochondrial pyruvate carrier (\n                    <jats:italic>Mpc1<\/jats:italic>\n                    ), which is mediated by diminished expression and nuclear presence of its transcriptional regulator, estrogen-related nuclear receptor alpha (Esrra). Consequently, Esrra exhibits weakened binding to the\n                    <jats:italic>Mpc1<\/jats:italic>\n                    promoter. This outcome arises from the impaired interaction between Esrra and the peroxisome proliferator-activated receptor gamma coactivator 1-alpha (Ppargc1a). Ultimately, this cascade results in diminished pyruvate influx into mitochondria and, consequently reduced ATP production in tolerized murine and human macrophages. Exogenously added ATP in infected macrophages restores the transcript levels of\n                    <jats:italic>Mpc1<\/jats:italic>\n                    and\n                    <jats:italic>Esrra and<\/jats:italic>\n                    enhances cytokine production and intracellular bacterial clearance. Consistent with the in vitro findings, murine infection studies corroborate the 2-AA-mediated long-lasting decrease in ATP and acetyl-CoA and its association with\n                    <jats:italic>PA<\/jats:italic>\n                    persistence, further supporting this QS signaling molecule as the culprit of the host bioenergetic alterations and\n                    <jats:italic>PA<\/jats:italic>\n                    persistence. These findings unveil 2-AA as a modulator of cellular immunometabolism and reveal an unprecedented mechanism of host tolerance to infection involving the Ppargc1a\/Esrra axis in its influence on Mpc1\/OXPHOS-dependent energy production and\n                    <jats:italic>PA<\/jats:italic>\n                    clearance. These paradigmatic findings pave the way for developing treatments to bolster host resilience to pathogen-induced damage. Given that QS is a common characteristic of prokaryotes, it is likely that 2-AA-like molecules with similar functions may be present in other pathogens.\n                  <\/jats:p>","DOI":"10.7554\/elife.97568","type":"journal-article","created":{"date-parts":[[2024,6,12]],"date-time":"2024-06-12T12:26:22Z","timestamp":1718195182000},"update-policy":"https:\/\/doi.org\/10.7554\/elife.97568","source":"Crossref","is-referenced-by-count":4,"title":["The bacterial quorum sensing signal 2\u2019-aminoacetophenone rewires immune cell bioenergetics through the Ppargc1a\/Esrra axis to mediate tolerance to infection"],"prefix":"10.7554","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0883-6385","authenticated-orcid":true,"given":"Arijit","family":"Chakraborty","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/002pd6e78","id-type":"ROR","asserted-by":"publisher"}],"name":"Department of Surgery, Massachusetts General Hospital, and Harvard Medical 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