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To address this gap, we separated EVs from eight anatomical brain regions of a single individual and subsequently characterized them by count, size, morphology, and protein and RNA content. The greatest particle yield was from cerebellum, while the fewest particles were recovered from the orbitofrontal, postcentral gyrus, and thalamus regions. EV surface phenotyping indicated that CD81 and CD9 were more abundant than CD63 for all regions. Cell-enriched surface markers varied between brain regions. For example, putative neuronal markers NCAM, CD271, and NRCAM were more abundant in medulla, cerebellum, and occipital regions, respectively. These findings, while restricted to tissues from a single individual, suggest that additional studies are merited to lend more insight into the links between EV heterogeneity and function in the CNS.<\/jats:p>","DOI":"10.1101\/2023.05.06.539665","type":"posted-content","created":{"date-parts":[[2023,5,9]],"date-time":"2023-05-09T03:10:29Z","timestamp":1683601829000},"source":"Crossref","is-referenced-by-count":6,"title":["Towards a human brain EV atlas: Characteristics of EVs from different brain regions, including small RNA and protein profiles"],"prefix":"10.64898","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1749-963X","authenticated-orcid":false,"given":"Yiyao","family":"Huang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4485-1096","authenticated-orcid":false,"given":"Tanina","family":"Arab","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9365-2985","authenticated-orcid":false,"given":"Ashley E.","family":"Russell","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emily R.","family":"Mallick","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rajini","family":"Nagaraj","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Evan","family":"Gizzie","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0677-917X","authenticated-orcid":false,"given":"Javier","family":"Redding-Ochoa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juan C.","family":"Troncoso","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Olga","family":"Pletnikova","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4153-0895","authenticated-orcid":false,"given":"Andrey","family":"Turchinovich","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David A.","family":"Routenberg","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1664-4233","authenticated-orcid":false,"given":"Kenneth W.","family":"Witwer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"54368","reference":[{"key":"2023051612550385000_2023.05.06.539665v2.1","unstructured":"Th\u00e9ry, C. et al. 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