{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T01:36:57Z","timestamp":1792201017345,"version":"4.4.0"},"update-to":[{"DOI":"10.1371\/journal.ppat.1014351","type":"new_version","label":"New version","source":"publisher","updated":{"date-parts":[[2026,6,22]],"date-time":"2026-06-22T00:00:00Z","timestamp":1782086400000}}],"reference-count":94,"publisher":"Public Library of Science (PLoS)","issue":"6","license":[{"start":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T00:00:00Z","timestamp":1781481600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"NIDA","award":["R01DA055491"],"award-info":[{"award-number":["R01DA055491"]}]},{"DOI":"10.13039\/100005192","name":"California HIV\/AIDS Research Program","doi-asserted-by":"publisher","award":["H24BD7837"],"award-info":[{"award-number":["H24BD7837"]}],"id":[{"id":"10.13039\/100005192","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000065","name":"NINDS","doi-asserted-by":"crossref","award":["R01NS137852"],"award-info":[{"award-number":["R01NS137852"]}],"id":[{"id":"10.13039\/100000065","id-type":"DOI","asserted-by":"crossref"}]},{"name":"NIH","award":["U24MH100928"],"award-info":[{"award-number":["U24MH100928"]}]},{"name":"NIH","award":["75N95023C00014"],"award-info":[{"award-number":["75N95023C00014"]}]},{"name":"NIH","award":["P30MH062512"],"award-info":[{"award-number":["P30MH062512"]}]}],"content-domain":{"domain":["www.plospathogens.org"],"crossmark-restriction":false},"short-container-title":["PLoS Pathog"],"abstract":"<jats:p>Despite effective antiretroviral therapy, HIV persists in the central nervous system (CNS) and may contribute to neuroinflammation and cognitive impairment. How viral persistence, immune responses, and regional CNS T-cell architecture relate to cognitive functioning remains unclear. We performed a cross-sectional, multi-compartmental immune-genomic study in 12 people with HIV on long-term viral suppression enrolled in the Last Gift rapid autopsy program. Quantitative HIV reservoir measures (total-episomal DNA, unspliced-multiply spliced RNA) and paired \u03b1\u03b2 T-cell receptor repertoire (TCRR) sequencing were performed in peripheral blood mononuclear cells and five CNS regions: hippocampus, frontal motor cortex, basal ganglia, occipital cortex, and spinal cord. Cognitive performance was assessed within one year of death. Tissue-resolved associations between cognition and HIV reservoir, TCRR architecture (richness, diversity, clonality), and pathogen-specific T-cell clonotypes (HIV, CMV, EBV, and riboflavin derivatives) were evaluated using participant-clustered multivariable models. False discovery rate was applied. HIV DNA and RNA were detectable across all tissues but were not associated with cognitive performance or TCRR metrics. Peripheral TCRR architecture was unrelated to cognition, whereas higher TCRR richness and diversity in the hippocampus and spinal cord were associated with worse verbal, motor, and attention\/working memory scores. Higher TCRR richness in the spinal cord was also associated with better recall. T-cell receptor clonotype frequency distributions differed across CNS regions, consistent with regional immune compartmentalization. Epitope-inference analyses revealed pathogen-dependent associations: higher number of HIV\u2013specific T-cell clonotypes in the basal ganglia was associated with better global and attention\/working memory scores, whereas riboflavin derivative\u2013specific clonotypes in frontal motor cortex were associated with better motor performance. CMV-specific clonotypes showed nominal associations with worse learning and memory. CNS\u2013localized T-cell receptor architecture and antigenic imprinting related more closely to neurocognitive variability than quantitative measures of HIV persistence under viral suppression, highlighting regional specialization of T-cell responses as a potential correlate of brain health.<\/jats:p>","DOI":"10.1371\/journal.ppat.1014351","type":"journal-article","created":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T17:30:42Z","timestamp":1781544642000},"page":"e1014351","update-policy":"https:\/\/doi.org\/10.1371\/journal.ppat.corrections_policy","source":"Crossref","is-referenced-by-count":4,"title":["Central Nervous System T-cell immune architecture, and not HIV burden, tracks with cognition under long-term viral suppression"],"prefix":"10.1371","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8663-719X","authenticated-orcid":true,"given":"Mattia","family":"Trunfio","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gemma","family":"Caballero","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vanessa","family":"Gomez-Moreno","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon A.","family":"Mallal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Celestine N.","family":"Wanjalla","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angela","family":"Jones","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karen","family":"Beeri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alan","family":"Wells","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"LaMere","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ben","family":"Gouaux","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Donald R.","family":"Franklin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Corley","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronald J.","family":"Ellis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David J.","family":"Moore","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Scott 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