{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T22:17:39Z","timestamp":1774477059919,"version":"3.50.1"},"reference-count":25,"publisher":"S. Karger AG","issue":"1","license":[{"start":{"date-parts":[[2022,6,10]],"date-time":"2022-06-10T00:00:00Z","timestamp":1654819200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2022,6,10]],"date-time":"2022-06-10T00:00:00Z","timestamp":1654819200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Innate Immun"],"published-print":{"date-parts":[[2023]]},"abstract":"<jats:p>Immune reactions after trauma are characterized by immediate activation of innate immunity and simultaneously downregulation of adaptive immunity leading to a misbalanced immunohomeostasis and immunosuppression of the injured host. Therefore, the susceptibility to secondary infections is strongly increased after trauma. Immune responses are regulated by a network of immune cells influencing each other and at the same time modifying their functions dependent on the inflammatory environment. Although myeloid-derived suppressor cells (MDSCs) are initially described as T-cell suppressors, their immunomodulatory capacity after trauma is mostly undefined. Therefore, in vitro-generated MDSCs were adoptively transferred into mice after blunt chest trauma (TxT). A single MDSC treatment-induced splenic T-cell expansion decreased apoptosis sensitivity and improved proliferation in the absence of T-cell exhaustion until 2 weeks after trauma. MDSC treatment had a long-lasting effect on the genomic landscape of CD4&lt;sup&gt;+&lt;\/sup&gt; T cells by upregulating primarily Th2-associated genes. Remarkably, immune-activating functions of MDSCs supported the ability of TxT mice to respond to post-traumatic secondary antigen challenge. Secondary insults were mimicked by immunizing MDSC-treated TxT mice with ovalbumin (OVA), followed by OVA restimulation in vitro. MDSC treatment significantly increased the frequency of OVA-specific T cells, enhanced their Th1\/Th2 cytokine expression, and induced upregulation of cytolytic molecules finally improving OVA-specific cytotoxicity. Overall, we could show that therapeutic MDSC treatment after TxT improves post-traumatic T-cell functions, which might enable the traumatic host to counterbalance trauma-induced immunoparalysis. <\/jats:p>","DOI":"10.1159\/000525088","type":"journal-article","created":{"date-parts":[[2022,6,10]],"date-time":"2022-06-10T21:00:54Z","timestamp":1654894854000},"page":"78-95","source":"Crossref","is-referenced-by-count":4,"title":["Adoptively Transferred in vitro-Generated Myeloid-Derived Suppressor Cells Improve T-Cell Function and Antigen-Specific Immunity after Traumatic Lung 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