{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T02:56:51Z","timestamp":1790996211722,"version":"4.1.0"},"reference-count":142,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,10]],"date-time":"2023-05-10T00:00:00Z","timestamp":1683676800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012190","name":"Russian Federation","doi-asserted-by":"publisher","award":["122022800499-5"],"award-info":[{"award-number":["122022800499-5"]}],"id":[{"id":"10.13039\/501100012190","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cells"],"abstract":"<jats:p>Regulatory T cells (Tregs) play a key role in maintaining immune balance and regulating the loss of self-tolerance mechanisms in various autoimmune diseases, including primary Sj\u00f6gren\u2019s syndrome (pSS). With the development of pSS primarily in the exocrine glands, lymphocytic infiltration occurs in the early stages, mainly due to activated CD4+ T cells. Subsequently, in the absence of rational therapy, patients develop ectopic lymphoid structures and lymphomas. While the suppression of autoactivated CD4+ T cells is involved in the pathological process, the main role belongs to Tregs, making them a target for research and possible regenerative therapy. However, the available information about their role in the onset and progression of this disease seems unsystematized and, in certain aspects, controversial. In our review, we aimed to organize the data on the role of Tregs in the pathogenesis of pSS, as well as to discuss possible strategies of cell therapy for this disease. This review provides information on the differentiation, activation, and suppressive functions of Tregs and the role of the FoxP3 protein in these processes. It also highlights data on various subpopulations of Tregs in pSS, their proportion in the peripheral blood and minor salivary glands of patients as well as their role in the development of ectopic lymphoid structures. Our data emphasize the need for further research on Tregs and highlight their potential use as a cell-based therapy.<\/jats:p>","DOI":"10.3390\/cells12101359","type":"journal-article","created":{"date-parts":[[2023,5,11]],"date-time":"2023-05-11T01:37:09Z","timestamp":1683769029000},"page":"1359","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["The Role of Regulatory T Cells in the Onset and Progression of Primary Sj\u00f6gren\u2019s Syndrome"],"prefix":"10.3390","volume":"12","author":[{"given":"Varvara G.","family":"Blinova","sequence":"first","affiliation":[{"name":"Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10\/8, 119121 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vladimir I.","family":"Vasilyev","sequence":"additional","affiliation":[{"name":"Joint and Heart Treatment Center, Nizhnyaya Krasnoselskaya St. 4, 107140 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ekaterina B.","family":"Rodionova","sequence":"additional","affiliation":[{"name":"Medical Center Ltd., Timura Frunze St. 15\/1, 119021 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4753-7588","authenticated-orcid":false,"given":"Dmitry D.","family":"Zhdanov","sequence":"additional","affiliation":[{"name":"Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10\/8, 119121 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"981","DOI":"10.2340\/00015555-2690","article-title":"Skin Ultrastructural Findings in Acquired Generalized Hypohidrosis\/Anhidrosis in a Patient with Subclinical Sj\u00f6gren Syndrome","volume":"97","author":"Huang","year":"2017","journal-title":"Acta Derm. 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