{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T13:45:52Z","timestamp":1792590352068,"version":"4.5.0"},"reference-count":50,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"767","content-domain":{"domain":["www.science.org"],"crossmark-restriction":true},"short-container-title":["Sci. Transl. Med."],"published-print":{"date-parts":[[2024,10,2]]},"abstract":"<jats:p>\n            Oxidative stress has long been implicated in Parkinson\u2019s disease (PD) pathogenesis, although the sources and regulation of reactive oxygen species (ROS) production are poorly defined. Pathogenic mutations in the gene encoding leucine-rich repeat kinase 2 (LRRK2) are associated with increased kinase activity and a greater risk of PD. The substrates and downstream consequences of elevated LRRK2 kinase activity are still being elucidated, but overexpression of mutant LRRK2 has been associated with oxidative stress, and antioxidants reportedly mitigate LRRK2 toxicity. Here, using CRISPR-Cas9 gene-edited HEK293 cells, RAW264.7 macrophages, rat primary ventral midbrain cultures, and PD patient\u2013derived lymphoblastoid cells, we found that elevated LRRK2 kinase activity was associated with increased ROS production and lipid peroxidation and that this was blocked by inhibitors of either LRRK2 kinase or NADPH oxidase 2 (NOX2). Oxidative stress induced by the pesticide rotenone was ameliorated by LRRK2 kinase inhibition and was absent in cells devoid of LRRK2. In a rat model of PD induced by rotenone, a LRRK2 kinase inhibitor prevented the lipid peroxidation and NOX2 activation normally seen in nigral dopaminergic neurons in this model. Mechanistically, LRRK2 kinase activity was shown to regulate phosphorylation of serine-345 in the p47\n            <jats:sup>phox<\/jats:sup>\n            subunit of NOX2. This, in turn, led to translocation of p47\n            <jats:sup>phox<\/jats:sup>\n            from the cytosol to the membrane-associated gp91\n            <jats:sup>phox<\/jats:sup>\n            (NOX2) subunit, activation of the NOX2 enzyme complex, and production of ROS. Thus, LRRK2 kinase activity may drive cellular ROS production in PD through the regulation of NOX2 activity.\n          <\/jats:p>","DOI":"10.1126\/scitranslmed.adl3438","type":"journal-article","created":{"date-parts":[[2024,10,2]],"date-time":"2024-10-02T17:59:31Z","timestamp":1727891971000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":46,"title":["LRRK2 regulates production of reactive oxygen species in cell and animal models of Parkinson\u2019s disease"],"prefix":"10.1126","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4968-3722","authenticated-orcid":true,"given":"Matthew T.","family":"Keeney","sequence":"first","affiliation":[{"name":"Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA."},{"name":"Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA."},{"name":"Department of Pharmacology and Chemical 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L.","family":"Clark","sequence":"additional","affiliation":[{"name":"Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA."},{"name":"Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-0878-6330","authenticated-orcid":true,"given":"Sandra L.","family":"Castro","sequence":"additional","affiliation":[{"name":"Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA."},{"name":"Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-5867-3657","authenticated-orcid":true,"given":"Abigail","family":"Scheirer","sequence":"additional","affiliation":[{"name":"Pittsburgh Institute for Neurodegenerative 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