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While neurons bear the brunt of the pathology, a growing body of evidence suggests that glial cells are also affected. It has, however, been difficult to understand the role of glia, given the diversity of subtypes, each with their individual contributions to neuronal health. Using human SCA autopsy samples we have discovered that Bergmann glia\u2014the radial glia of the cerebellum, which form intimate functional connections with cerebellar Purkinje neurons\u2014display inflammatory JNK-dependent c-Jun phosphorylation. This phosphorylation defines a signaling pathway not observed in other activated glial populations, providing an opportunity to isolate the role of Bergmann glia in SCA inflammation. Turning to an SCA1 mouse model as a paradigmatic SCA, we demonstrate that inhibiting the JNK pathway reduces Bergmann glia inflammation accompanied by improvements in the SCA1 phenotype both behaviorally and pathologically. These findings demonstrate the causal role for Bergmann glia inflammation in SCA1 and point to a novel therapeutic strategy that could span several ataxic syndromes where Bergmann glia inflammation is a major feature.<\/jats:p>","DOI":"10.1186\/s12974-023-02801-1","type":"journal-article","created":{"date-parts":[[2023,5,26]],"date-time":"2023-05-26T08:04:09Z","timestamp":1685088249000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Reactive Bergmann glia play a central role in spinocerebellar ataxia inflammation via the JNK pathway"],"prefix":"10.1186","volume":"20","author":[{"given":"Chandrakanth Reddy","family":"Edamakanti","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vishwa","family":"Mohan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Puneet","family":"Opal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,5,26]]},"reference":[{"issue":"4","key":"2801_CR1","doi-asserted-by":"publisher","first-page":"327","DOI":"10.1016\/S1474-4422(18)30042-5","volume":"17","author":"A Diallo","year":"2018","unstructured":"Diallo A, Jacobi H, Cook A, Labrum R, Durr A, Brice A, Charles P, Marelli C, Mariotti C, Nanetti L, et al. 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