{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T22:17:49Z","timestamp":1790115469309,"version":"4.0.1"},"reference-count":30,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T00:00:00Z","timestamp":1780272000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,8,6]],"date-time":"2026-08-06T00:00:00Z","timestamp":1785974400000},"content-version":"vor","delay-in-days":66,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Transl Med"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Atopic dermatitis (AD) occurs across all ages but presents distinct clinical and immunologic features between children, adults, and older adults. The molecular programs underlying these age-specific immune differences remain poorly understood.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We performed single-cell multi-omics profiling of peripheral blood mononuclear cells (PBMCs) from 29 AD patients and 29 matched healthy controls (HC), spanning pediatric (0\u201317\u2009years), adult (18\u201359\u2009years), and geriatric (\u226560\u2009years) groups. Using Cellular Indexing of Transcriptomes and Epitopes by sequencing (CITE-seq), we simultaneously quantified transcriptomic (RNA) and surface proteomic (ADT) profiles across ~280,000 immune cells. Integrated analyses identified 30 immune subsets for cell-type proportion and differential expression analyses. Machine-learning classifiers were trained on significant gene and protein features to distinguish AD subgroups by age.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Compared with HC, AD blood showed enrichment of CD14+ monocytes, plasmacytoid dendritic cells, and CD4+ proliferating T cells, and differential gene expression analysis of AD vs HC revealed downstream Th2-associated signatures shared across all age groups. Within AD, pediatric patients had increased \u03b3\u03b4 T cells, na\u00efve CD4+, and na\u00efve CD8+ T cells, while geriatric patients exhibited more CD4+ cytotoxic and CD8+ central memory T cells, indicating a shift from naive to effector predominance with aging. Transcriptomic and proteomic analyses revealed distinct programs: pediatric AD was enriched for IL-10 and cytokine\u2013cytokine receptor signaling; adult AD demonstrated activation of metabolic and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-\u03baB)\/Th1\/Th17 pathways; and geriatric AD exhibited reduced adaptive immune activity but increased innate signaling. Machine-learning models based on differentially expressed genes and proteins accurately classified AD age groups (transcript-based F1\u2009=\u20090.70, AUC\u2009=\u20090.79), identifying stable markers such as IRF2, PDK4, ZFP90, CD21, CD94, and CD122.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Single-cell multi-omics profiling revealed age-specific transcriptional and immunological programs overlaid on a shared Th2-driven inflammatory foundation in AD. Rather than discrete disease states, pediatric, adult, and geriatric AD each exhibited distinct molecular signatures: developmental and cytoskeletal in children, stress-response and chronic inflammatory in adults, and innate and metabolic in geriatric individuals. These findings support age-group molecular subtyping and age-tailored therapeutic strategies across the AD lifespan.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12967-026-08288-7","type":"journal-article","created":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T07:32:21Z","timestamp":1780385541000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Immunological differences in atopic dermatitis across age groups: insights from single-cell multi-omics"],"prefix":"10.1186","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-0940-9120","authenticated-orcid":false,"given":"Gian Carlo L.","family":"Baldonado","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sugandh","family":"Kumar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joy","family":"Jin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaohui","family":"Fang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander","family":"Ildardashty","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mitchell","family":"Braun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isaac M.","family":"Neuhaus","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erin","family":"Mathes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tina","family":"Bhutani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wilson","family":"Liao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,6,1]]},"reference":[{"issue":"12","key":"8288_CR1","doi-asserted-by":"publisher","first-page":"1136","DOI":"10.1056\/NEJMra2023911","volume":"384","author":"S St\u00e4nder","year":"2021","unstructured":"St\u00e4nder S. 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T.B. has received research funding from Amgen, Castle, CorEvitas, Novartis, Pfizer, and Regeneron. She has served as an advisor for Abbvie, Apogee, Arcutis, Aslan, Boehringer-Ingelheim, Bristol Myers Squibb, Castle, Dermavant, Galderma, Incyte, Janssen, Leo, Lilly, Oruka, Pfizer, Novartis, Sanofi, Sun, Takeda, Taxa, and UCB. She is a speaker for Abbvie, Amgen, Arcutis, BMS, Dermavant, Galderma, Janssen, Lilly, Leo, Mindera, Ortho, Sanofi, and UCB. E.M. has received consulting fees from Novartis. The other authors report no conflicts of interest in this work.","order":3,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Declarations"}}],"article-number":"1004"}}