{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T20:46:14Z","timestamp":1790196374068,"version":"4.1.0"},"reference-count":52,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2021,5,25]],"date-time":"2021-05-25T00:00:00Z","timestamp":1621900800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["acrjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Arthritis &amp; Rheumatology"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To compare immune cell phenotype and function in psoriatic arthritis (PsA) versus psoriasis in order to better understand the pathogenesis of PsA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>In\u2010depth immunophenotyping of different T cell and dendritic cell subsets was performed in patients with PsA, psoriasis, or axial spondyloarthritis and healthy controls. Subsequently, we analyzed cells from peripheral blood, synovial fluid (SF), and skin biopsy specimens using flow cytometry, along with high\u2010throughput transcriptome analyses and functional assays on the specific cell populations that appeared to differentiate PsA from psoriasis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Compared to healthy controls, the peripheral blood of patients with PsA was characterized by an increase in regulatory CD4+ T cells and interleukin\u201017A (IL\u201017A) and IL\u201022 coproducing CD8+ T cells. One population specifically differentiated PsA from psoriasis: i.e., CD8+CCR10+ T cells were enriched in PsA. CD8+CCR10+ T cells expressed high levels of DNAX accessory molecule 1 and were effector memory cells that coexpressed skin\u2010homing receptors CCR4 and cutaneous lymphocyte antigen. CD8+CCR10+ T cells were detected under inflammatory and homeostatic conditions in skin, but were not enriched in SF. Gene profiling further revealed that CD8+CCR10+ T cells expressed GATA3, FOXP3, and core transcriptional signature of tissue\u2010resident memory T cells, including CD103. Specific genes, including RORC, IFNAR1, and ERAP1, were up\u2010regulated in PsA compared to psoriasis. CD8+CCR10+ T cells were endowed with a Tc2\/22\u2010like cytokine profile, lacked cytotoxic potential, and displayed overall regulatory function.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Tissue\u2010resident memory CD8+ T cells derived from the skin are enhanced in the circulation of patients with PsA compared to patients with psoriasis alone. This may indicate that aberrances in cutaneous tissue homeostasis contribute to arthritis development.<\/jats:p><\/jats:sec>","DOI":"10.1002\/art.41652","type":"journal-article","created":{"date-parts":[[2021,1,16]],"date-time":"2021-01-16T06:10:27Z","timestamp":1610777427000},"page":"1220-1232","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":88,"title":["Tissue\u2010Resident Memory CD8+ T Cells From Skin Differentiate Psoriatic Arthritis From Psoriasis"],"prefix":"10.1002","volume":"73","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7367-0185","authenticated-orcid":false,"given":"Emmerik F.","family":"Leijten","sequence":"first","affiliation":[{"name":"University Medical Center Utrecht  Utrecht The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tessa S.","family":"van Kempen","sequence":"additional","affiliation":[{"name":"University Medical Center Utrecht  Utrecht The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michel A.","family":"Olde Nordkamp","sequence":"additional","affiliation":[{"name":"University Medical Center Utrecht  Utrecht The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juliette N.","family":"Pouw","sequence":"additional","affiliation":[{"name":"University Medical Center Utrecht  Utrecht The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nienke J.","family":"Kleinrensink","sequence":"additional","affiliation":[{"name":"University Medical Center Utrecht  Utrecht The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nanette L.","family":"Vincken","sequence":"additional","affiliation":[{"name":"University Medical Center Utrecht  Utrecht The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jorre","family":"Mertens","sequence":"additional","affiliation":[{"name":"University Medical Center Utrecht  Utrecht The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deepak M. 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