PMID- 32044665 OWN - NLM STAT- MEDLINE DCOM- 20210106 LR - 20210106 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 81 DP - 2020 Apr TI - Recent discoveries in dendritic cell tolerance-inducing pharmacological molecules. PG - 106275 LID - S1567-5769(19)32616-5 [pii] LID - 10.1016/j.intimp.2020.106275 [doi] AB - Dendritic cells (DCs) represent one of the most important biological tools for cellular immunotherapy purposes. There are an increasing number of phase I and II studies, where regulatory or tolerogenic DCs (TolDCs) are utilized as negative vaccines, with the aim of inducing tolerogenic outcomes in patients with various autoimmune or chronic-inflammatory diseases, as well as in transplant settings. The induction of tolerogenic properties in DCs can be achieved by altering their activation state toward expression of immunosuppressive elements and/or by achieving resistance to maturation, which leads to insufficient co-stimulatory signal delivery and inability to efficiently present antigens. In the past, one of the most efficient ways to induce DC tolerance has been the application of selected pharmacological agents which actively induce a tolerogenic transcription program or inhibit major pro-inflammatory transcription factors such as Nf-kappaB. Important examples include immunosuppressants such as different corticosteroids, vitamin D(3), rapamycin and others. The quality of TolDCs induced by different approaches is becoming a vital issue and recent evidence suggests substantial heterogeneity between variously-generated TolDCs as evidenced by their transcriptomic profile and function. The possibility of various "flavors" of TolDCs encourages future research in discovery of Tol-DC inducing agents to enrich various ways of DC manipulation. This would enable a broader range of tools to manipulate DC toward specific characteristics desirable in different disease settings. In recent years, several novel small molecules have been identified with the capacity to promote DC tolerogenic characteristics. In this review, we will present and discuss these novel findings and also highlight novel understandings of tolerogenic mechanisms by which DC tolerogenicity is induced by already established agents. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Svajger, Urban AU - Svajger U AD - Blood Transfusion Center of Slovenia, Slajmerjeva 6, 1000 Ljubljana, Slovenia. Electronic address: urban.svajger@ztm.si. FAU - Rozman, Primoz J AU - Rozman PJ AD - Blood Transfusion Center of Slovenia, Slajmerjeva 6, 1000 Ljubljana, Slovenia. LA - eng PT - Journal Article PT - Review DEP - 20200207 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 SB - IM MH - Animals MH - Antigen Presentation MH - Cell Differentiation MH - Dendritic Cells/*immunology MH - Drug Discovery MH - Drug Therapy/*methods MH - Humans MH - Immune Tolerance/*drug effects MH - Immunotherapy/*methods MH - T-Lymphocytes, Regulatory/*immunology OTO - NOTNLM OT - Dendritic cells OT - Drugs OT - Molecules OT - Pharmacological OT - Tolerance OT - Tolerogenic COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2020/02/12 06:00 MHDA- 2021/01/07 06:00 CRDT- 2020/02/12 06:00 PHST- 2019/11/15 00:00 [received] PHST- 2020/01/31 00:00 [revised] PHST- 2020/01/31 00:00 [accepted] PHST- 2020/02/12 06:00 [pubmed] PHST- 2021/01/07 06:00 [medline] PHST- 2020/02/12 06:00 [entrez] AID - S1567-5769(19)32616-5 [pii] AID - 10.1016/j.intimp.2020.106275 [doi] PST - ppublish SO - Int Immunopharmacol. 2020 Apr;81:106275. doi: 10.1016/j.intimp.2020.106275. Epub 2020 Feb 7.